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_SPLIT_INTR,
139 IONIC_LIF_F_BROKEN,
140 IONIC_LIF_F_TX_DIM_INTR,
141 IONIC_LIF_F_RX_DIM_INTR,
142
143 /* leave this as last */
144 IONIC_LIF_F_STATE_SIZE
145 };
146
147 struct ionic_qtype_info {
148 u8 version;
149 u8 supported;
150 u64 features;
151 u16 desc_sz;
152 u16 comp_sz;
153 u16 sg_desc_sz;
154 u16 max_sg_elems;
155 u16 sg_desc_stride;
156 };
157
158 struct ionic_phc;
159
160 #define IONIC_LIF_NAME_MAX_SZ 32
161 struct ionic_lif {
162 struct net_device *netdev;
163 DECLARE_BITMAP(state, IONIC_LIF_F_STATE_SIZE);
164 struct ionic *ionic;
165 unsigned int index;
166 unsigned int hw_index;
167 struct mutex queue_lock; /* lock for queue structures */
168 struct mutex config_lock; /* lock for config actions */
169 spinlock_t adminq_lock; /* lock for AdminQ operations */
170 struct ionic_qcq *adminqcq;
171 struct ionic_qcq *notifyqcq;
172 struct ionic_qcq **txqcqs;
173 struct ionic_qcq *hwstamp_txq;
174 struct ionic_tx_stats *txqstats;
175 struct ionic_qcq **rxqcqs;
176 struct ionic_qcq *hwstamp_rxq;
177 struct ionic_rx_stats *rxqstats;
178 struct ionic_deferred deferred;
179 struct work_struct tx_timeout_work;
180 u64 last_eid;
181 unsigned int kern_pid;
182 u64 __iomem *kern_dbpage;
183 unsigned int neqs;
184 unsigned int nxqs;
185 unsigned int ntxq_descs;
186 unsigned int nrxq_descs;
187 u32 rx_copybreak;
188 u64 rxq_features;
189 u16 rx_mode;
190 u64 hw_features;
191 bool registered;
192 u16 lif_type;
193 unsigned int nmcast;
194 unsigned int nucast;
195 unsigned int nvlans;
196 unsigned int max_vlans;
197 char name[IONIC_LIF_NAME_MAX_SZ];
198
199 union ionic_lif_identity *identity;
200 struct ionic_lif_info *info;
201 dma_addr_t info_pa;
202 u32 info_sz;
203 struct ionic_qtype_info qtype_info[IONIC_QTYPE_MAX];
204
205 u16 rss_types;
206 u8 rss_hash_key[IONIC_RSS_HASH_KEY_SIZE];
207 u8 *rss_ind_tbl;
208 dma_addr_t rss_ind_tbl_pa;
209 u32 rss_ind_tbl_sz;
210
211 struct ionic_rx_filters rx_filters;
212 u32 rx_coalesce_usecs; /* what the user asked for */
213 u32 rx_coalesce_hw; /* what the hw is using */
214 u32 tx_coalesce_usecs; /* what the user asked for */
215 u32 tx_coalesce_hw; /* what the hw is using */
216 unsigned long *dbid_inuse;
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