1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
3 
4 #ifndef _IONIC_LIF_H_
5 #define _IONIC_LIF_H_
6 
7 #include <linux/ptp_clock_kernel.h>
8 #include <linux/timecounter.h>
9 #include <uapi/linux/net_tstamp.h>
10 #include <linux/dim.h>
11 #include <linux/pci.h>
12 #include "ionic_rx_filter.h"
13 
14 #define IONIC_ADMINQ_LENGTH	16	/* must be a power of two */
15 #define IONIC_NOTIFYQ_LENGTH	64	/* must be a power of two */
16 
17 #define ADD_ADDR	true
18 #define DEL_ADDR	false
19 #define CAN_SLEEP	true
20 #define CAN_NOT_SLEEP	false
21 
22 #define IONIC_RX_COPYBREAK_DEFAULT	256
23 #define IONIC_TX_BUDGET_DEFAULT		256
24 
25 struct ionic_tx_stats {
26 	u64 pkts;
27 	u64 bytes;
28 	u64 csum_none;
29 	u64 csum;
30 	u64 tso;
31 	u64 tso_bytes;
32 	u64 frags;
33 	u64 vlan_inserted;
34 	u64 clean;
35 	u64 linearize;
36 	u64 crc32_csum;
37 	u64 dma_map_err;
38 	u64 hwstamp_valid;
39 	u64 hwstamp_invalid;
40 };
41 
42 struct ionic_rx_stats {
43 	u64 pkts;
44 	u64 bytes;
45 	u64 csum_none;
46 	u64 csum_complete;
47 	u64 dropped;
48 	u64 vlan_stripped;
49 	u64 csum_error;
50 	u64 dma_map_err;
51 	u64 alloc_err;
52 	u64 hwstamp_valid;
53 	u64 hwstamp_invalid;
54 };
55 
56 #define IONIC_QCQ_F_INITED		BIT(0)
57 #define IONIC_QCQ_F_SG			BIT(1)
58 #define IONIC_QCQ_F_INTR		BIT(2)
59 #define IONIC_QCQ_F_TX_STATS		BIT(3)
60 #define IONIC_QCQ_F_RX_STATS		BIT(4)
61 #define IONIC_QCQ_F_NOTIFYQ		BIT(5)
62 #define IONIC_QCQ_F_CMB_RINGS		BIT(6)
63 
64 struct ionic_qcq {
65 	void *q_base;
66 	dma_addr_t q_base_pa;
67 	u32 q_size;
68 	void *cq_base;
69 	dma_addr_t cq_base_pa;
70 	u32 cq_size;
71 	void *sg_base;
72 	dma_addr_t sg_base_pa;
73 	u32 sg_size;
74 	void __iomem *cmb_q_base;
75 	phys_addr_t cmb_q_base_pa;
76 	u32 cmb_q_size;
77 	u32 cmb_pgid;
78 	u32 cmb_order;
79 	struct dim dim;
80 	struct ionic_queue q;
81 	struct ionic_cq cq;
82 	struct ionic_intr_info intr;
83 	struct timer_list napi_deadline;
84 	struct napi_struct napi;
85 	unsigned int flags;
86 	struct ionic_qcq *napi_qcq;
87 	struct dentry *dentry;
88 };
89 
90 #define q_to_qcq(q)		container_of(q, struct ionic_qcq, q)
91 #define q_to_tx_stats(q)	(&(q)->lif->txqstats[(q)->index])
92 #define q_to_rx_stats(q)	(&(q)->lif->rxqstats[(q)->index])
93 #define napi_to_qcq(napi)	container_of(napi, struct ionic_qcq, napi)
94 #define napi_to_cq(napi)	(&napi_to_qcq(napi)->cq)
95 
96 enum ionic_deferred_work_type {
97 	IONIC_DW_TYPE_RX_MODE,
98 	IONIC_DW_TYPE_LINK_STATUS,
99 	IONIC_DW_TYPE_LIF_RESET,
100 };
101 
102 struct ionic_deferred_work {
103 	struct list_head list;
104 	enum ionic_deferred_work_type type;
105 	union {
106 		u8 addr[ETH_ALEN];
107 		u8 fw_status;
108 	};
109 };
110 
111 struct ionic_deferred {
112 	spinlock_t lock;		/* lock for deferred work list */
113 	struct list_head list;
114 	struct work_struct work;
115 };
116 
117 struct ionic_lif_sw_stats {
118 	u64 tx_packets;
119 	u64 tx_bytes;
120 	u64 rx_packets;
121 	u64 rx_bytes;
122 	u64 tx_tso;
123 	u64 tx_tso_bytes;
124 	u64 tx_csum_none;
125 	u64 tx_csum;
126 	u64 rx_csum_none;
127 	u64 rx_csum_complete;
128 	u64 rx_csum_error;
129 	u64 tx_hwstamp_valid;
130 	u64 tx_hwstamp_invalid;
131 	u64 rx_hwstamp_valid;
132 	u64 rx_hwstamp_invalid;
133 	u64 hw_tx_dropped;
134 	u64 hw_rx_dropped;
135 	u64 hw_rx_over_errors;
136 	u64 hw_rx_missed_errors;
137 	u64 hw_tx_aborted_errors;
138 };
139 
140 enum ionic_lif_state_flags {
141 	IONIC_LIF_F_INITED,
142 	IONIC_LIF_F_UP,
143 	IONIC_LIF_F_LINK_CHECK_REQUESTED,
144 	IONIC_LIF_F_FILTER_SYNC_NEEDED,
145 	IONIC_LIF_F_FW_RESET,
146 	IONIC_LIF_F_FW_STOPPING,
147 	IONIC_LIF_F_SPLIT_INTR,
148 	IONIC_LIF_F_BROKEN,
149 	IONIC_LIF_F_TX_DIM_INTR,
150 	IONIC_LIF_F_RX_DIM_INTR,
151 	IONIC_LIF_F_CMB_TX_RINGS,
152 	IONIC_LIF_F_CMB_RX_RINGS,
153 
154 	/* leave this as last */
155 	IONIC_LIF_F_STATE_SIZE
156 };
157 
158 struct ionic_qtype_info {
159 	u8  version;
160 	u8  supported;
161 	u64 features;
162 	u16 desc_sz;
163 	u16 comp_sz;
164 	u16 sg_desc_sz;
165 	u16 max_sg_elems;
166 	u16 sg_desc_stride;
167 };
168 
169 struct ionic_phc;
170 
171 #define IONIC_LIF_NAME_MAX_SZ		32
172 struct ionic_lif {
173 	struct net_device *netdev;
174 	DECLARE_BITMAP(state, IONIC_LIF_F_STATE_SIZE);
175 	struct ionic *ionic;
176 	unsigned int index;
177 	unsigned int hw_index;
178 	struct mutex queue_lock;	/* lock for queue structures */
179 	struct mutex config_lock;	/* lock for config actions */
180 	spinlock_t adminq_lock;		/* lock for AdminQ operations */
181 	struct ionic_qcq *adminqcq;
182 	struct ionic_qcq *notifyqcq;
183 	struct ionic_qcq **txqcqs;
184 	struct ionic_qcq *hwstamp_txq;
185 	struct ionic_tx_stats *txqstats;
186 	struct ionic_qcq **rxqcqs;
187 	struct ionic_qcq *hwstamp_rxq;
188 	struct ionic_rx_stats *rxqstats;
189 	struct ionic_deferred deferred;
190 	struct work_struct tx_timeout_work;
191 	u64 last_eid;
192 	unsigned int kern_pid;
193 	u64 __iomem *kern_dbpage;
194 	unsigned int neqs;
195 	unsigned int nxqs;
196 	unsigned int ntxq_descs;
197 	unsigned int nrxq_descs;
198 	u32 rx_copybreak;
199 	u64 rxq_features;
200 	u16 rx_mode;
201 	u64 hw_features;
202 	bool registered;
203 	u16 lif_type;
204 	unsigned int link_down_count;
205 	unsigned int nmcast;
206 	unsigned int nucast;
207 	unsigned int nvlans;
208 	unsigned int max_vlans;
209 	char name[IONIC_LIF_NAME_MAX_SZ];
210 
211 	union ionic_lif_identity *identity;
212 	struct ionic_lif_info *info;
213 	dma_addr_t info_pa;
214 	u32 info_sz;
215 	struct ionic_qtype_info qtype_info[IONIC_QTYPE_MAX];
216 
217 	u16 rss_types;
218 	u8 rss_hash_key[IONIC_RSS_HASH_KEY_SIZE];
219 	u8 *rss_ind_tbl;
220 	dma_addr_t rss_ind_tbl_pa;
221 	u32 rss_ind_tbl_sz;
222 
223 	struct ionic_rx_filters rx_filters;
224 	u32 rx_coalesce_usecs;		/* what the user asked for */
225 	u32 rx_coalesce_hw;		/* what the hw is using */
226 	u32 tx_coalesce_usecs;		/* what the user asked for */
227 	u32 tx_coalesce_hw;		/* what the hw is using */
228 	unsigned int dbid_count;
229 
230 	struct ionic_phc *phc;
231 
232 	struct dentry *dentry;
233 };
234 
235 struct ionic_phc {
236 	spinlock_t lock; /* lock for cc and tc */
237 	struct cyclecounter cc;
238 	struct timecounter tc;
239 
240 	struct mutex config_lock; /* lock for ts_config */
241 	struct hwtstamp_config ts_config;
242 	u64 ts_config_rx_filt;
243 	u32 ts_config_tx_mode;
244 
245 	u32 init_cc_mult;
246 	long aux_work_delay;
247 
248 	struct ptp_clock_info ptp_info;
249 	struct ptp_clock *ptp;
250 	struct ionic_lif *lif;
251 };
252 
253 struct ionic_queue_params {
254 	unsigned int nxqs;
255 	unsigned int ntxq_descs;
256 	unsigned int nrxq_descs;
257 	u64 rxq_features;
258 	bool intr_split;
259 	bool cmb_tx;
260 	bool cmb_rx;
261 };
262 
263 static inline void ionic_init_queue_params(struct ionic_lif *lif,
264 					   struct ionic_queue_params *qparam)
265 {
266 	qparam->nxqs = lif->nxqs;
267 	qparam->ntxq_descs = lif->ntxq_descs;
268 	qparam->nrxq_descs = lif->nrxq_descs;
269 	qparam->rxq_features = lif->rxq_features;
270 	qparam->intr_split = test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
271 	qparam->cmb_tx = test_bit(IONIC_LIF_F_CMB_TX_RINGS, lif->state);
272 	qparam->cmb_rx = test_bit(IONIC_LIF_F_CMB_RX_RINGS, lif->state);
273 }
274 
275 static inline void ionic_set_queue_params(struct ionic_lif *lif,
276 					  struct ionic_queue_params *qparam)
277 {
278 	lif->nxqs = qparam->nxqs;
279 	lif->ntxq_descs = qparam->ntxq_descs;
280 	lif->nrxq_descs = qparam->nrxq_descs;
281 	lif->rxq_features = qparam->rxq_features;
282 
283 	if (qparam->intr_split)
284 		set_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
285 	else
286 		clear_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
287 
288 	if (qparam->cmb_tx)
289 		set_bit(IONIC_LIF_F_CMB_TX_RINGS, lif->state);
290 	else
291 		clear_bit(IONIC_LIF_F_CMB_TX_RINGS, lif->state);
292 
293 	if (qparam->cmb_rx)
294 		set_bit(IONIC_LIF_F_CMB_RX_RINGS, lif->state);
295 	else
296 		clear_bit(IONIC_LIF_F_CMB_RX_RINGS, lif->state);
297 }
298 
299 static inline u32 ionic_coal_usec_to_hw(struct ionic *ionic, u32 usecs)
300 {
301 	u32 mult = le32_to_cpu(ionic->ident.dev.intr_coal_mult);
302 	u32 div = le32_to_cpu(ionic->ident.dev.intr_coal_div);
303 
304 	/* Div-by-zero should never be an issue, but check anyway */
305 	if (!div || !mult)
306 		return 0;
307 
308 	/* Round up in case usecs is close to the next hw unit */
309 	usecs += (div / mult) >> 1;
310 
311 	/* Convert from usecs to device units */
312 	return (usecs * mult) / div;
313 }
314 
315 void ionic_link_status_check_request(struct ionic_lif *lif, bool can_sleep);
316 void ionic_get_stats64(struct net_device *netdev,
317 		       struct rtnl_link_stats64 *ns);
318 void ionic_lif_deferred_enqueue(struct ionic_deferred *def,
319 				struct ionic_deferred_work *work);
320 int ionic_lif_alloc(struct ionic *ionic);
321 int ionic_lif_init(struct ionic_lif *lif);
322 void ionic_lif_free(struct ionic_lif *lif);
323 void ionic_lif_deinit(struct ionic_lif *lif);
324 
325 int ionic_lif_addr_add(struct ionic_lif *lif, const u8 *addr);
326 int ionic_lif_addr_del(struct ionic_lif *lif, const u8 *addr);
327 
328 void ionic_stop_queues_reconfig(struct ionic_lif *lif);
329 void ionic_txrx_free(struct ionic_lif *lif);
330 void ionic_qcqs_free(struct ionic_lif *lif);
331 int ionic_restart_lif(struct ionic_lif *lif);
332 
333 int ionic_lif_register(struct ionic_lif *lif);
334 void ionic_lif_unregister(struct ionic_lif *lif);
335 int ionic_lif_identify(struct ionic *ionic, u8 lif_type,
336 		       union ionic_lif_identity *lif_ident);
337 int ionic_lif_size(struct ionic *ionic);
338 
339 #if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
340 void ionic_lif_hwstamp_replay(struct ionic_lif *lif);
341 void ionic_lif_hwstamp_recreate_queues(struct ionic_lif *lif);
342 int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr);
343 int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr);
344 ktime_t ionic_lif_phc_ktime(struct ionic_lif *lif, u64 counter);
345 void ionic_lif_register_phc(struct ionic_lif *lif);
346 void ionic_lif_unregister_phc(struct ionic_lif *lif);
347 void ionic_lif_alloc_phc(struct ionic_lif *lif);
348 void ionic_lif_free_phc(struct ionic_lif *lif);
349 #else
350 static inline void ionic_lif_hwstamp_replay(struct ionic_lif *lif) {}
351 static inline void ionic_lif_hwstamp_recreate_queues(struct ionic_lif *lif) {}
352 
353 static inline int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr)
354 {
355 	return -EOPNOTSUPP;
356 }
357 
358 static inline int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr)
359 {
360 	return -EOPNOTSUPP;
361 }
362 
363 static inline ktime_t ionic_lif_phc_ktime(struct ionic_lif *lif, u64 counter)
364 {
365 	return ns_to_ktime(0);
366 }
367 
368 static inline void ionic_lif_register_phc(struct ionic_lif *lif) {}
369 static inline void ionic_lif_unregister_phc(struct ionic_lif *lif) {}
370 static inline void ionic_lif_alloc_phc(struct ionic_lif *lif) {}
371 static inline void ionic_lif_free_phc(struct ionic_lif *lif) {}
372 #endif
373 
374 int ionic_lif_create_hwstamp_txq(struct ionic_lif *lif);
375 int ionic_lif_create_hwstamp_rxq(struct ionic_lif *lif);
376 int ionic_lif_config_hwstamp_rxq_all(struct ionic_lif *lif, bool rx_all);
377 int ionic_lif_set_hwstamp_txmode(struct ionic_lif *lif, u16 txstamp_mode);
378 int ionic_lif_set_hwstamp_rxfilt(struct ionic_lif *lif, u64 pkt_class);
379 
380 int ionic_lif_rss_config(struct ionic_lif *lif, u16 types,
381 			 const u8 *key, const u32 *indir);
382 void ionic_lif_rx_mode(struct ionic_lif *lif);
383 int ionic_reconfigure_queues(struct ionic_lif *lif,
384 			     struct ionic_queue_params *qparam);
385 #endif /* _IONIC_LIF_H_ */
386