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33#ifndef __MLX5_WQ_H__
34#define __MLX5_WQ_H__
35
36#include <linux/mlx5/mlx5_ifc.h>
37#include <linux/mlx5/cq.h>
38#include <linux/mlx5/qp.h>
39
40struct mlx5_wq_param {
41 int buf_numa_node;
42 int db_numa_node;
43};
44
45struct mlx5_wq_ctrl {
46 struct mlx5_core_dev *mdev;
47 struct mlx5_frag_buf buf;
48 struct mlx5_db db;
49};
50
51struct mlx5_wq_cyc {
52 struct mlx5_frag_buf_ctrl fbc;
53 __be32 *db;
54 u16 sz;
55 u16 wqe_ctr;
56 u16 cur_sz;
57};
58
59struct mlx5_wq_qp {
60 struct mlx5_wq_cyc rq;
61 struct mlx5_wq_cyc sq;
62};
63
64struct mlx5_cqwq {
65 struct mlx5_frag_buf_ctrl fbc;
66 __be32 *db;
67 u32 cc;
68};
69
70struct mlx5_wq_ll {
71 struct mlx5_frag_buf_ctrl fbc;
72 __be32 *db;
73 __be16 *tail_next;
74 u16 head;
75 u16 wqe_ctr;
76 u16 cur_sz;
77};
78
79int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
80 void *wqc, struct mlx5_wq_cyc *wq,
81 struct mlx5_wq_ctrl *wq_ctrl);
82void mlx5_wq_cyc_wqe_dump(struct mlx5_wq_cyc *wq, u16 ix, u8 nstrides);
83void mlx5_wq_cyc_reset(struct mlx5_wq_cyc *wq);
84
85int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
86 void *qpc, struct mlx5_wq_qp *wq,
87 struct mlx5_wq_ctrl *wq_ctrl);
88
89int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
90 void *cqc, struct mlx5_cqwq *wq,
91 struct mlx5_wq_ctrl *wq_ctrl);
92
93int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
94 void *wqc, struct mlx5_wq_ll *wq,
95 struct mlx5_wq_ctrl *wq_ctrl);
96void mlx5_wq_ll_reset(struct mlx5_wq_ll *wq);
97
98void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl);
99
100static inline u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq)
101{
102 return (u32)wq->fbc.sz_m1 + 1;
103}
104
105static inline int mlx5_wq_cyc_is_full(struct mlx5_wq_cyc *wq)
106{
107 return wq->cur_sz == wq->sz;
108}
109
110static inline int mlx5_wq_cyc_missing(struct mlx5_wq_cyc *wq)
111{
112 return wq->sz - wq->cur_sz;
113}
114
115static inline int mlx5_wq_cyc_is_empty(struct mlx5_wq_cyc *wq)
116{
117 return !wq->cur_sz;
118}
119
120static inline void mlx5_wq_cyc_push(struct mlx5_wq_cyc *wq)
121{
122 wq->wqe_ctr++;
123 wq->cur_sz++;
124}
125
126static inline void mlx5_wq_cyc_push_n(struct mlx5_wq_cyc *wq, u8 n)
127{
128 wq->wqe_ctr += n;
129 wq->cur_sz += n;
130}
131
132static inline void mlx5_wq_cyc_pop(struct mlx5_wq_cyc *wq)
133{
134 wq->cur_sz--;
135}
136
137static inline void mlx5_wq_cyc_update_db_record(struct mlx5_wq_cyc *wq)
138{
139 *wq->db = cpu_to_be32(wq->wqe_ctr);
140}
141
142static inline u16 mlx5_wq_cyc_ctr2ix(struct mlx5_wq_cyc *wq, u16 ctr)
143{
144 return ctr & wq->fbc.sz_m1;
145}
146
147static inline u16 mlx5_wq_cyc_get_head(struct mlx5_wq_cyc *wq)
148{
149 return mlx5_wq_cyc_ctr2ix(wq, wq->wqe_ctr);
150}
151
152static inline u16 mlx5_wq_cyc_get_tail(struct mlx5_wq_cyc *wq)
153{
154 return mlx5_wq_cyc_ctr2ix(wq, wq->wqe_ctr - wq->cur_sz);
155}
156
157static inline void *mlx5_wq_cyc_get_wqe(struct mlx5_wq_cyc *wq, u16 ix)
158{
159 return mlx5_frag_buf_get_wqe(&wq->fbc, ix);
160}
161
162static inline u16 mlx5_wq_cyc_get_contig_wqebbs(struct mlx5_wq_cyc *wq, u16 ix)
163{
164 return mlx5_frag_buf_get_idx_last_contig_stride(&wq->fbc, ix) - ix + 1;
165}
166
167static inline int mlx5_wq_cyc_cc_bigger(u16 cc1, u16 cc2)
168{
169 int equal = (cc1 == cc2);
170 int smaller = 0x8000 & (cc1 - cc2);
171
172 return !equal && !smaller;
173}
174
175static inline u16 mlx5_wq_cyc_get_counter(struct mlx5_wq_cyc *wq)
176{
177 return wq->wqe_ctr;
178}
179
180static inline u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq)
181{
182 return wq->fbc.sz_m1 + 1;
183}
184
185static inline u8 mlx5_cqwq_get_log_stride_size(struct mlx5_cqwq *wq)
186{
187 return wq->fbc.log_stride;
188}
189
190static inline u32 mlx5_cqwq_ctr2ix(struct mlx5_cqwq *wq, u32 ctr)
191{
192 return ctr & wq->fbc.sz_m1;
193}
194
195static inline u32 mlx5_cqwq_get_ci(struct mlx5_cqwq *wq)
196{
197 return mlx5_cqwq_ctr2ix(wq, wq->cc);
198}
199
200static inline struct mlx5_cqe64 *mlx5_cqwq_get_wqe(struct mlx5_cqwq *wq, u32 ix)
201{
202 struct mlx5_cqe64 *cqe = mlx5_frag_buf_get_wqe(&wq->fbc, ix);
203
204
205 cqe += wq->fbc.log_stride == 7;
206
207 return cqe;
208}
209
210static inline u32 mlx5_cqwq_get_ctr_wrap_cnt(struct mlx5_cqwq *wq, u32 ctr)
211{
212 return ctr >> wq->fbc.log_sz;
213}
214
215static inline u32 mlx5_cqwq_get_wrap_cnt(struct mlx5_cqwq *wq)
216{
217 return mlx5_cqwq_get_ctr_wrap_cnt(wq, wq->cc);
218}
219
220static inline void mlx5_cqwq_pop(struct mlx5_cqwq *wq)
221{
222 wq->cc++;
223}
224
225static inline void mlx5_cqwq_update_db_record(struct mlx5_cqwq *wq)
226{
227 *wq->db = cpu_to_be32(wq->cc & 0xffffff);
228}
229
230static inline struct mlx5_cqe64 *mlx5_cqwq_get_cqe(struct mlx5_cqwq *wq)
231{
232 u32 ci = mlx5_cqwq_get_ci(wq);
233 struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(wq, ci);
234 u8 cqe_ownership_bit = cqe->op_own & MLX5_CQE_OWNER_MASK;
235 u8 sw_ownership_val = mlx5_cqwq_get_wrap_cnt(wq) & 1;
236
237 if (cqe_ownership_bit != sw_ownership_val)
238 return NULL;
239
240
241 dma_rmb();
242
243 return cqe;
244}
245
246static inline u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq)
247{
248 return (u32)wq->fbc.sz_m1 + 1;
249}
250
251static inline int mlx5_wq_ll_is_full(struct mlx5_wq_ll *wq)
252{
253 return wq->cur_sz == wq->fbc.sz_m1;
254}
255
256static inline int mlx5_wq_ll_is_empty(struct mlx5_wq_ll *wq)
257{
258 return !wq->cur_sz;
259}
260
261static inline int mlx5_wq_ll_missing(struct mlx5_wq_ll *wq)
262{
263 return wq->fbc.sz_m1 - wq->cur_sz;
264}
265
266static inline void *mlx5_wq_ll_get_wqe(struct mlx5_wq_ll *wq, u16 ix)
267{
268 return mlx5_frag_buf_get_wqe(&wq->fbc, ix);
269}
270
271static inline u16 mlx5_wq_ll_get_wqe_next_ix(struct mlx5_wq_ll *wq, u16 ix)
272{
273 struct mlx5_wqe_srq_next_seg *wqe = mlx5_wq_ll_get_wqe(wq, ix);
274
275 return be16_to_cpu(wqe->next_wqe_index);
276}
277
278static inline void mlx5_wq_ll_push(struct mlx5_wq_ll *wq, u16 head_next)
279{
280 wq->head = head_next;
281 wq->wqe_ctr++;
282 wq->cur_sz++;
283}
284
285static inline void mlx5_wq_ll_pop(struct mlx5_wq_ll *wq, __be16 ix,
286 __be16 *next_tail_next)
287{
288 *wq->tail_next = ix;
289 wq->tail_next = next_tail_next;
290 wq->cur_sz--;
291}
292
293static inline void mlx5_wq_ll_update_db_record(struct mlx5_wq_ll *wq)
294{
295 *wq->db = cpu_to_be32(wq->wqe_ctr);
296}
297
298static inline u16 mlx5_wq_ll_get_head(struct mlx5_wq_ll *wq)
299{
300 return wq->head;
301}
302
303static inline u16 mlx5_wq_ll_get_counter(struct mlx5_wq_ll *wq)
304{
305 return wq->wqe_ctr;
306}
307
308#endif
309