1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #ifndef MLX4_IB_H 34 #define MLX4_IB_H 35 36 #include <linux/compiler.h> 37 #include <linux/list.h> 38 #include <linux/mutex.h> 39 40 #include <rdma/ib_verbs.h> 41 #include <rdma/ib_umem.h> 42 43 #include <linux/mlx4/device.h> 44 #include <linux/mlx4/doorbell.h> 45 46 struct mlx4_ib_ucontext { 47 struct ib_ucontext ibucontext; 48 struct mlx4_uar uar; 49 struct list_head db_page_list; 50 struct mutex db_page_mutex; 51 }; 52 53 struct mlx4_ib_pd { 54 struct ib_pd ibpd; 55 u32 pdn; 56 }; 57 58 struct mlx4_ib_cq_buf { 59 struct mlx4_buf buf; 60 struct mlx4_mtt mtt; 61 }; 62 63 struct mlx4_ib_cq_resize { 64 struct mlx4_ib_cq_buf buf; 65 int cqe; 66 }; 67 68 struct mlx4_ib_cq { 69 struct ib_cq ibcq; 70 struct mlx4_cq mcq; 71 struct mlx4_ib_cq_buf buf; 72 struct mlx4_ib_cq_resize *resize_buf; 73 struct mlx4_db db; 74 spinlock_t lock; 75 struct mutex resize_mutex; 76 struct ib_umem *umem; 77 struct ib_umem *resize_umem; 78 }; 79 80 struct mlx4_ib_mr { 81 struct ib_mr ibmr; 82 struct mlx4_mr mmr; 83 struct ib_umem *umem; 84 }; 85 86 struct mlx4_ib_fmr { 87 struct ib_fmr ibfmr; 88 struct mlx4_fmr mfmr; 89 }; 90 91 struct mlx4_ib_wq { 92 u64 *wrid; 93 spinlock_t lock; 94 int wqe_cnt; 95 int max_post; 96 int max_gs; 97 int offset; 98 int wqe_shift; 99 unsigned head; 100 unsigned tail; 101 }; 102 103 enum mlx4_ib_qp_flags { 104 MLX4_IB_QP_LSO = 1 << 0 105 }; 106 107 struct mlx4_ib_qp { 108 struct ib_qp ibqp; 109 struct mlx4_qp mqp; 110 struct mlx4_buf buf; 111 112 struct mlx4_db db; 113 struct mlx4_ib_wq rq; 114 115 u32 doorbell_qpn; 116 __be32 sq_signal_bits; 117 unsigned sq_next_wqe; 118 int sq_max_wqes_per_wr; 119 int sq_spare_wqes; 120 struct mlx4_ib_wq sq; 121 122 struct ib_umem *umem; 123 struct mlx4_mtt mtt; 124 int buf_size; 125 struct mutex mutex; 126 u32 flags; 127 u8 port; 128 u8 alt_port; 129 u8 atomic_rd_en; 130 u8 resp_depth; 131 u8 sq_no_prefetch; 132 u8 state; 133 }; 134 135 struct mlx4_ib_srq { 136 struct ib_srq ibsrq; 137 struct mlx4_srq msrq; 138 struct mlx4_buf buf; 139 struct mlx4_db db; 140 u64 *wrid; 141 spinlock_t lock; 142 int head; 143 int tail; 144 u16 wqe_ctr; 145 struct ib_umem *umem; 146 struct mlx4_mtt mtt; 147 struct mutex mutex; 148 }; 149 150 struct mlx4_ib_ah { 151 struct ib_ah ibah; 152 struct mlx4_av av; 153 }; 154 155 struct mlx4_ib_dev { 156 struct ib_device ib_dev; 157 struct mlx4_dev *dev; 158 void __iomem *uar_map; 159 160 struct mlx4_uar priv_uar; 161 u32 priv_pdn; 162 MLX4_DECLARE_DOORBELL_LOCK(uar_lock); 163 164 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2]; 165 struct ib_ah *sm_ah[MLX4_MAX_PORTS]; 166 spinlock_t sm_lock; 167 168 struct mutex cap_mask_mutex; 169 }; 170 171 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev) 172 { 173 return container_of(ibdev, struct mlx4_ib_dev, ib_dev); 174 } 175 176 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext) 177 { 178 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext); 179 } 180 181 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd) 182 { 183 return container_of(ibpd, struct mlx4_ib_pd, ibpd); 184 } 185 186 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq) 187 { 188 return container_of(ibcq, struct mlx4_ib_cq, ibcq); 189 } 190 191 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq) 192 { 193 return container_of(mcq, struct mlx4_ib_cq, mcq); 194 } 195 196 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr) 197 { 198 return container_of(ibmr, struct mlx4_ib_mr, ibmr); 199 } 200 201 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr) 202 { 203 return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr); 204 } 205 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp) 206 { 207 return container_of(ibqp, struct mlx4_ib_qp, ibqp); 208 } 209 210 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp) 211 { 212 return container_of(mqp, struct mlx4_ib_qp, mqp); 213 } 214 215 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq) 216 { 217 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq); 218 } 219 220 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq) 221 { 222 return container_of(msrq, struct mlx4_ib_srq, msrq); 223 } 224 225 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah) 226 { 227 return container_of(ibah, struct mlx4_ib_ah, ibah); 228 } 229 230 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt, 231 struct mlx4_db *db); 232 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db); 233 234 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc); 235 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt, 236 struct ib_umem *umem); 237 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 238 u64 virt_addr, int access_flags, 239 struct ib_udata *udata); 240 int mlx4_ib_dereg_mr(struct ib_mr *mr); 241 242 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period); 243 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata); 244 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector, 245 struct ib_ucontext *context, 246 struct ib_udata *udata); 247 int mlx4_ib_destroy_cq(struct ib_cq *cq); 248 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc); 249 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags); 250 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 251 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq); 252 253 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); 254 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr); 255 int mlx4_ib_destroy_ah(struct ib_ah *ah); 256 257 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd, 258 struct ib_srq_init_attr *init_attr, 259 struct ib_udata *udata); 260 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 261 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata); 262 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr); 263 int mlx4_ib_destroy_srq(struct ib_srq *srq); 264 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index); 265 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, 266 struct ib_recv_wr **bad_wr); 267 268 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, 269 struct ib_qp_init_attr *init_attr, 270 struct ib_udata *udata); 271 int mlx4_ib_destroy_qp(struct ib_qp *qp); 272 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 273 int attr_mask, struct ib_udata *udata); 274 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, 275 struct ib_qp_init_attr *qp_init_attr); 276 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 277 struct ib_send_wr **bad_wr); 278 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, 279 struct ib_recv_wr **bad_wr); 280 281 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey, 282 int port, struct ib_wc *in_wc, struct ib_grh *in_grh, 283 void *in_mad, void *response_mad); 284 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 285 struct ib_wc *in_wc, struct ib_grh *in_grh, 286 struct ib_mad *in_mad, struct ib_mad *out_mad); 287 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev); 288 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev); 289 290 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags, 291 struct ib_fmr_attr *fmr_attr); 292 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages, 293 u64 iova); 294 int mlx4_ib_unmap_fmr(struct list_head *fmr_list); 295 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr); 296 297 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah) 298 { 299 return !!(ah->av.g_slid & 0x80); 300 } 301 302 #endif /* MLX4_IB_H */ 303