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 
63 struct ionic_qcq {
64 	void *q_base;
65 	dma_addr_t q_base_pa;
66 	u32 q_size;
67 	void *cq_base;
68 	dma_addr_t cq_base_pa;
69 	u32 cq_size;
70 	void *sg_base;
71 	dma_addr_t sg_base_pa;
72 	u32 sg_size;
73 	struct dim dim;
74 	struct ionic_queue q;
75 	struct ionic_cq cq;
76 	struct ionic_intr_info intr;
77 	struct napi_struct napi;
78 	unsigned int flags;
79 	struct dentry *dentry;
80 };
81 
82 #define q_to_qcq(q)		container_of(q, struct ionic_qcq, q)
83 #define q_to_tx_stats(q)	(&(q)->lif->txqstats[(q)->index])
84 #define q_to_rx_stats(q)	(&(q)->lif->rxqstats[(q)->index])
85 #define napi_to_qcq(napi)	container_of(napi, struct ionic_qcq, napi)
86 #define napi_to_cq(napi)	(&napi_to_qcq(napi)->cq)
87 
88 enum ionic_deferred_work_type {
89 	IONIC_DW_TYPE_RX_MODE,
90 	IONIC_DW_TYPE_LINK_STATUS,
91 	IONIC_DW_TYPE_LIF_RESET,
92 };
93 
94 struct ionic_deferred_work {
95 	struct list_head list;
96 	enum ionic_deferred_work_type type;
97 	union {
98 		u8 addr[ETH_ALEN];
99 		u8 fw_status;
100 	};
101 };
102 
103 struct ionic_deferred {
104 	spinlock_t lock;		/* lock for deferred work list */
105 	struct list_head list;
106 	struct work_struct work;
107 };
108 
109 struct ionic_lif_sw_stats {
110 	u64 tx_packets;
111 	u64 tx_bytes;
112 	u64 rx_packets;
113 	u64 rx_bytes;
114 	u64 tx_tso;
115 	u64 tx_tso_bytes;
116 	u64 tx_csum_none;
117 	u64 tx_csum;
118 	u64 rx_csum_none;
119 	u64 rx_csum_complete;
120 	u64 rx_csum_error;
121 	u64 tx_hwstamp_valid;
122 	u64 tx_hwstamp_invalid;
123 	u64 rx_hwstamp_valid;
124 	u64 rx_hwstamp_invalid;
125 	u64 hw_tx_dropped;
126 	u64 hw_rx_dropped;
127 	u64 hw_rx_over_errors;
128 	u64 hw_rx_missed_errors;
129 	u64 hw_tx_aborted_errors;
130 };
131 
132 enum ionic_lif_state_flags {
133 	IONIC_LIF_F_INITED,
134 	IONIC_LIF_F_UP,
135 	IONIC_LIF_F_LINK_CHECK_REQUESTED,
136 	IONIC_LIF_F_FILTER_SYNC_NEEDED,
137 	IONIC_LIF_F_FW_RESET,
138 	IONIC_LIF_F_FW_STOPPING,
139 	IONIC_LIF_F_SPLIT_INTR,
140 	IONIC_LIF_F_BROKEN,
141 	IONIC_LIF_F_TX_DIM_INTR,
142 	IONIC_LIF_F_RX_DIM_INTR,
143 
144 	/* leave this as last */
145 	IONIC_LIF_F_STATE_SIZE
146 };
147 
148 struct ionic_qtype_info {
149 	u8  version;
150 	u8  supported;
151 	u64 features;
152 	u16 desc_sz;
153 	u16 comp_sz;
154 	u16 sg_desc_sz;
155 	u16 max_sg_elems;
156 	u16 sg_desc_stride;
157 };
158 
159 struct ionic_phc;
160 
161 #define IONIC_LIF_NAME_MAX_SZ		32
162 struct ionic_lif {
163 	struct net_device *netdev;
164 	DECLARE_BITMAP(state, IONIC_LIF_F_STATE_SIZE);
165 	struct ionic *ionic;
166 	unsigned int index;
167 	unsigned int hw_index;
168 	struct mutex queue_lock;	/* lock for queue structures */
169 	struct mutex config_lock;	/* lock for config actions */
170 	spinlock_t adminq_lock;		/* lock for AdminQ operations */
171 	struct ionic_qcq *adminqcq;
172 	struct ionic_qcq *notifyqcq;
173 	struct ionic_qcq **txqcqs;
174 	struct ionic_qcq *hwstamp_txq;
175 	struct ionic_tx_stats *txqstats;
176 	struct ionic_qcq **rxqcqs;
177 	struct ionic_qcq *hwstamp_rxq;
178 	struct ionic_rx_stats *rxqstats;
179 	struct ionic_deferred deferred;
180 	struct work_struct tx_timeout_work;
181 	u64 last_eid;
182 	unsigned int kern_pid;
183 	u64 __iomem *kern_dbpage;
184 	unsigned int neqs;
185 	unsigned int nxqs;
186 	unsigned int ntxq_descs;
187 	unsigned int nrxq_descs;
188 	u32 rx_copybreak;
189 	u64 rxq_features;
190 	u16 rx_mode;
191 	u64 hw_features;
192 	bool registered;
193 	u16 lif_type;
194 	unsigned int nmcast;
195 	unsigned int nucast;
196 	unsigned int nvlans;
197 	unsigned int max_vlans;
198 	char name[IONIC_LIF_NAME_MAX_SZ];
199 
200 	union ionic_lif_identity *identity;
201 	struct ionic_lif_info *info;
202 	dma_addr_t info_pa;
203 	u32 info_sz;
204 	struct ionic_qtype_info qtype_info[IONIC_QTYPE_MAX];
205 
206 	u16 rss_types;
207 	u8 rss_hash_key[IONIC_RSS_HASH_KEY_SIZE];
208 	u8 *rss_ind_tbl;
209 	dma_addr_t rss_ind_tbl_pa;
210 	u32 rss_ind_tbl_sz;
211 
212 	struct ionic_rx_filters rx_filters;
213 	u32 rx_coalesce_usecs;		/* what the user asked for */
214 	u32 rx_coalesce_hw;		/* what the hw is using */
215 	u32 tx_coalesce_usecs;		/* what the user asked for */
216 	u32 tx_coalesce_hw;		/* what the hw is using */
217 	unsigned int dbid_count;
218 
219 	struct ionic_phc *phc;
220 
221 	struct dentry *dentry;
222 };
223 
224 struct ionic_phc {
225 	spinlock_t lock; /* lock for cc and tc */
226 	struct cyclecounter cc;
227 	struct timecounter tc;
228 
229 	struct mutex config_lock; /* lock for ts_config */
230 	struct hwtstamp_config ts_config;
231 	u64 ts_config_rx_filt;
232 	u32 ts_config_tx_mode;
233 
234 	u32 init_cc_mult;
235 	long aux_work_delay;
236 
237 	struct ptp_clock_info ptp_info;
238 	struct ptp_clock *ptp;
239 	struct ionic_lif *lif;
240 };
241 
242 struct ionic_queue_params {
243 	unsigned int nxqs;
244 	unsigned int ntxq_descs;
245 	unsigned int nrxq_descs;
246 	unsigned int intr_split;
247 	u64 rxq_features;
248 };
249 
ionic_init_queue_params(struct ionic_lif * lif,struct ionic_queue_params * qparam)250 static inline void ionic_init_queue_params(struct ionic_lif *lif,
251 					   struct ionic_queue_params *qparam)
252 {
253 	qparam->nxqs = lif->nxqs;
254 	qparam->ntxq_descs = lif->ntxq_descs;
255 	qparam->nrxq_descs = lif->nrxq_descs;
256 	qparam->intr_split = test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
257 	qparam->rxq_features = lif->rxq_features;
258 }
259 
ionic_coal_usec_to_hw(struct ionic * ionic,u32 usecs)260 static inline u32 ionic_coal_usec_to_hw(struct ionic *ionic, u32 usecs)
261 {
262 	u32 mult = le32_to_cpu(ionic->ident.dev.intr_coal_mult);
263 	u32 div = le32_to_cpu(ionic->ident.dev.intr_coal_div);
264 
265 	/* Div-by-zero should never be an issue, but check anyway */
266 	if (!div || !mult)
267 		return 0;
268 
269 	/* Round up in case usecs is close to the next hw unit */
270 	usecs += (div / mult) >> 1;
271 
272 	/* Convert from usecs to device units */
273 	return (usecs * mult) / div;
274 }
275 
276 void ionic_link_status_check_request(struct ionic_lif *lif, bool can_sleep);
277 void ionic_get_stats64(struct net_device *netdev,
278 		       struct rtnl_link_stats64 *ns);
279 void ionic_lif_deferred_enqueue(struct ionic_deferred *def,
280 				struct ionic_deferred_work *work);
281 int ionic_lif_alloc(struct ionic *ionic);
282 int ionic_lif_init(struct ionic_lif *lif);
283 void ionic_lif_free(struct ionic_lif *lif);
284 void ionic_lif_deinit(struct ionic_lif *lif);
285 
286 int ionic_lif_addr_add(struct ionic_lif *lif, const u8 *addr);
287 int ionic_lif_addr_del(struct ionic_lif *lif, const u8 *addr);
288 
289 int ionic_lif_register(struct ionic_lif *lif);
290 void ionic_lif_unregister(struct ionic_lif *lif);
291 int ionic_lif_identify(struct ionic *ionic, u8 lif_type,
292 		       union ionic_lif_identity *lif_ident);
293 int ionic_lif_size(struct ionic *ionic);
294 
295 #if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
296 void ionic_lif_hwstamp_replay(struct ionic_lif *lif);
297 void ionic_lif_hwstamp_recreate_queues(struct ionic_lif *lif);
298 int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr);
299 int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr);
300 ktime_t ionic_lif_phc_ktime(struct ionic_lif *lif, u64 counter);
301 void ionic_lif_register_phc(struct ionic_lif *lif);
302 void ionic_lif_unregister_phc(struct ionic_lif *lif);
303 void ionic_lif_alloc_phc(struct ionic_lif *lif);
304 void ionic_lif_free_phc(struct ionic_lif *lif);
305 #else
ionic_lif_hwstamp_replay(struct ionic_lif * lif)306 static inline void ionic_lif_hwstamp_replay(struct ionic_lif *lif) {}
ionic_lif_hwstamp_recreate_queues(struct ionic_lif * lif)307 static inline void ionic_lif_hwstamp_recreate_queues(struct ionic_lif *lif) {}
308 
ionic_lif_hwstamp_set(struct ionic_lif * lif,struct ifreq * ifr)309 static inline int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr)
310 {
311 	return -EOPNOTSUPP;
312 }
313 
ionic_lif_hwstamp_get(struct ionic_lif * lif,struct ifreq * ifr)314 static inline int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr)
315 {
316 	return -EOPNOTSUPP;
317 }
318 
ionic_lif_phc_ktime(struct ionic_lif * lif,u64 counter)319 static inline ktime_t ionic_lif_phc_ktime(struct ionic_lif *lif, u64 counter)
320 {
321 	return ns_to_ktime(0);
322 }
323 
ionic_lif_register_phc(struct ionic_lif * lif)324 static inline void ionic_lif_register_phc(struct ionic_lif *lif) {}
ionic_lif_unregister_phc(struct ionic_lif * lif)325 static inline void ionic_lif_unregister_phc(struct ionic_lif *lif) {}
ionic_lif_alloc_phc(struct ionic_lif * lif)326 static inline void ionic_lif_alloc_phc(struct ionic_lif *lif) {}
ionic_lif_free_phc(struct ionic_lif * lif)327 static inline void ionic_lif_free_phc(struct ionic_lif *lif) {}
328 #endif
329 
330 int ionic_lif_create_hwstamp_txq(struct ionic_lif *lif);
331 int ionic_lif_create_hwstamp_rxq(struct ionic_lif *lif);
332 int ionic_lif_config_hwstamp_rxq_all(struct ionic_lif *lif, bool rx_all);
333 int ionic_lif_set_hwstamp_txmode(struct ionic_lif *lif, u16 txstamp_mode);
334 int ionic_lif_set_hwstamp_rxfilt(struct ionic_lif *lif, u64 pkt_class);
335 
336 int ionic_lif_rss_config(struct ionic_lif *lif, u16 types,
337 			 const u8 *key, const u32 *indir);
338 void ionic_lif_rx_mode(struct ionic_lif *lif);
339 int ionic_reconfigure_queues(struct ionic_lif *lif,
340 			     struct ionic_queue_params *qparam);
341 #endif /* _IONIC_LIF_H_ */
342