1 /* QLogic qed NIC Driver 2 * Copyright (c) 2015-2017 QLogic Corporation 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 _QED_SP_H 34 #define _QED_SP_H 35 36 #include <linux/types.h> 37 #include <linux/kernel.h> 38 #include <linux/list.h> 39 #include <linux/slab.h> 40 #include <linux/spinlock.h> 41 #include <linux/qed/qed_chain.h> 42 #include "qed.h" 43 #include "qed_hsi.h" 44 45 enum spq_mode { 46 QED_SPQ_MODE_BLOCK, /* Client will poll a designated mem. address */ 47 QED_SPQ_MODE_CB, /* Client supplies a callback */ 48 QED_SPQ_MODE_EBLOCK, /* QED should block until completion */ 49 }; 50 51 struct qed_spq_comp_cb { 52 void (*function)(struct qed_hwfn *, 53 void *, 54 union event_ring_data *, 55 u8 fw_return_code); 56 void *cookie; 57 }; 58 59 /** 60 * @brief qed_eth_cqe_completion - handles the completion of a 61 * ramrod on the cqe ring 62 * 63 * @param p_hwfn 64 * @param cqe 65 * 66 * @return int 67 */ 68 int qed_eth_cqe_completion(struct qed_hwfn *p_hwfn, 69 struct eth_slow_path_rx_cqe *cqe); 70 71 /** 72 * @file 73 * 74 * QED Slow-hwfn queue interface 75 */ 76 77 union ramrod_data { 78 struct pf_start_ramrod_data pf_start; 79 struct pf_update_ramrod_data pf_update; 80 struct rx_queue_start_ramrod_data rx_queue_start; 81 struct rx_queue_update_ramrod_data rx_queue_update; 82 struct rx_queue_stop_ramrod_data rx_queue_stop; 83 struct tx_queue_start_ramrod_data tx_queue_start; 84 struct tx_queue_stop_ramrod_data tx_queue_stop; 85 struct vport_start_ramrod_data vport_start; 86 struct vport_stop_ramrod_data vport_stop; 87 struct rx_update_gft_filter_data rx_update_gft; 88 struct vport_update_ramrod_data vport_update; 89 struct core_rx_start_ramrod_data core_rx_queue_start; 90 struct core_rx_stop_ramrod_data core_rx_queue_stop; 91 struct core_tx_start_ramrod_data core_tx_queue_start; 92 struct core_tx_stop_ramrod_data core_tx_queue_stop; 93 struct vport_filter_update_ramrod_data vport_filter_update; 94 95 struct rdma_init_func_ramrod_data rdma_init_func; 96 struct rdma_close_func_ramrod_data rdma_close_func; 97 struct rdma_register_tid_ramrod_data rdma_register_tid; 98 struct rdma_deregister_tid_ramrod_data rdma_deregister_tid; 99 struct roce_create_qp_resp_ramrod_data roce_create_qp_resp; 100 struct roce_create_qp_req_ramrod_data roce_create_qp_req; 101 struct roce_modify_qp_resp_ramrod_data roce_modify_qp_resp; 102 struct roce_modify_qp_req_ramrod_data roce_modify_qp_req; 103 struct roce_query_qp_resp_ramrod_data roce_query_qp_resp; 104 struct roce_query_qp_req_ramrod_data roce_query_qp_req; 105 struct roce_destroy_qp_resp_ramrod_data roce_destroy_qp_resp; 106 struct roce_destroy_qp_req_ramrod_data roce_destroy_qp_req; 107 struct roce_init_func_ramrod_data roce_init_func; 108 struct rdma_create_cq_ramrod_data rdma_create_cq; 109 struct rdma_destroy_cq_ramrod_data rdma_destroy_cq; 110 struct rdma_srq_create_ramrod_data rdma_create_srq; 111 struct rdma_srq_destroy_ramrod_data rdma_destroy_srq; 112 struct rdma_srq_modify_ramrod_data rdma_modify_srq; 113 struct iwarp_create_qp_ramrod_data iwarp_create_qp; 114 struct iwarp_tcp_offload_ramrod_data iwarp_tcp_offload; 115 struct iwarp_mpa_offload_ramrod_data iwarp_mpa_offload; 116 struct iwarp_modify_qp_ramrod_data iwarp_modify_qp; 117 struct iwarp_init_func_ramrod_data iwarp_init_func; 118 struct fcoe_init_ramrod_params fcoe_init; 119 struct fcoe_conn_offload_ramrod_params fcoe_conn_ofld; 120 struct fcoe_conn_terminate_ramrod_params fcoe_conn_terminate; 121 struct fcoe_stat_ramrod_params fcoe_stat; 122 123 struct iscsi_slow_path_hdr iscsi_empty; 124 struct iscsi_init_ramrod_params iscsi_init; 125 struct iscsi_spe_func_dstry iscsi_destroy; 126 struct iscsi_spe_conn_offload iscsi_conn_offload; 127 struct iscsi_conn_update_ramrod_params iscsi_conn_update; 128 struct iscsi_spe_conn_mac_update iscsi_conn_mac_update; 129 struct iscsi_spe_conn_termination iscsi_conn_terminate; 130 131 struct vf_start_ramrod_data vf_start; 132 struct vf_stop_ramrod_data vf_stop; 133 }; 134 135 #define EQ_MAX_CREDIT 0xffffffff 136 137 enum spq_priority { 138 QED_SPQ_PRIORITY_NORMAL, 139 QED_SPQ_PRIORITY_HIGH, 140 }; 141 142 union qed_spq_req_comp { 143 struct qed_spq_comp_cb cb; 144 u64 *done_addr; 145 }; 146 147 struct qed_spq_comp_done { 148 unsigned int done; 149 u8 fw_return_code; 150 }; 151 152 struct qed_spq_entry { 153 struct list_head list; 154 155 u8 flags; 156 157 /* HSI slow path element */ 158 struct slow_path_element elem; 159 160 union ramrod_data ramrod; 161 162 enum spq_priority priority; 163 164 /* pending queue for this entry */ 165 struct list_head *queue; 166 167 enum spq_mode comp_mode; 168 struct qed_spq_comp_cb comp_cb; 169 struct qed_spq_comp_done comp_done; /* SPQ_MODE_EBLOCK */ 170 171 /* Posted entry for unlimited list entry in EBLOCK mode */ 172 struct qed_spq_entry *post_ent; 173 }; 174 175 struct qed_eq { 176 struct qed_chain chain; 177 u8 eq_sb_index; /* index within the SB */ 178 __le16 *p_fw_cons; /* ptr to index value */ 179 }; 180 181 struct qed_consq { 182 struct qed_chain chain; 183 }; 184 185 typedef int 186 (*qed_spq_async_comp_cb)(struct qed_hwfn *p_hwfn, 187 u8 opcode, 188 u16 echo, 189 union event_ring_data *data, 190 u8 fw_return_code); 191 192 int 193 qed_spq_register_async_cb(struct qed_hwfn *p_hwfn, 194 enum protocol_type protocol_id, 195 qed_spq_async_comp_cb cb); 196 197 void 198 qed_spq_unregister_async_cb(struct qed_hwfn *p_hwfn, 199 enum protocol_type protocol_id); 200 201 struct qed_spq { 202 spinlock_t lock; /* SPQ lock */ 203 204 struct list_head unlimited_pending; 205 struct list_head pending; 206 struct list_head completion_pending; 207 struct list_head free_pool; 208 209 struct qed_chain chain; 210 211 /* allocated dma-able memory for spq entries (+ramrod data) */ 212 dma_addr_t p_phys; 213 struct qed_spq_entry *p_virt; 214 215 #define SPQ_RING_SIZE \ 216 (CORE_SPQE_PAGE_SIZE_BYTES / sizeof(struct slow_path_element)) 217 218 /* Bitmap for handling out-of-order completions */ 219 DECLARE_BITMAP(p_comp_bitmap, SPQ_RING_SIZE); 220 u8 comp_bitmap_idx; 221 222 /* Statistics */ 223 u32 unlimited_pending_count; 224 u32 normal_count; 225 u32 high_count; 226 u32 comp_sent_count; 227 u32 comp_count; 228 229 u32 cid; 230 qed_spq_async_comp_cb async_comp_cb[MAX_PROTOCOL_TYPE]; 231 }; 232 233 /** 234 * @brief qed_spq_post - Posts a Slow hwfn request to FW, or lacking that 235 * Pends it to the future list. 236 * 237 * @param p_hwfn 238 * @param p_req 239 * 240 * @return int 241 */ 242 int qed_spq_post(struct qed_hwfn *p_hwfn, 243 struct qed_spq_entry *p_ent, 244 u8 *fw_return_code); 245 246 /** 247 * @brief qed_spq_allocate - Alloocates & initializes the SPQ and EQ. 248 * 249 * @param p_hwfn 250 * 251 * @return int 252 */ 253 int qed_spq_alloc(struct qed_hwfn *p_hwfn); 254 255 /** 256 * @brief qed_spq_setup - Reset the SPQ to its start state. 257 * 258 * @param p_hwfn 259 */ 260 void qed_spq_setup(struct qed_hwfn *p_hwfn); 261 262 /** 263 * @brief qed_spq_deallocate - Deallocates the given SPQ struct. 264 * 265 * @param p_hwfn 266 */ 267 void qed_spq_free(struct qed_hwfn *p_hwfn); 268 269 /** 270 * @brief qed_spq_get_entry - Obtain an entrry from the spq 271 * free pool list. 272 * 273 * 274 * 275 * @param p_hwfn 276 * @param pp_ent 277 * 278 * @return int 279 */ 280 int 281 qed_spq_get_entry(struct qed_hwfn *p_hwfn, 282 struct qed_spq_entry **pp_ent); 283 284 /** 285 * @brief qed_spq_return_entry - Return an entry to spq free 286 * pool list 287 * 288 * @param p_hwfn 289 * @param p_ent 290 */ 291 void qed_spq_return_entry(struct qed_hwfn *p_hwfn, 292 struct qed_spq_entry *p_ent); 293 /** 294 * @brief qed_eq_allocate - Allocates & initializes an EQ struct 295 * 296 * @param p_hwfn 297 * @param num_elem number of elements in the eq 298 * 299 * @return int 300 */ 301 int qed_eq_alloc(struct qed_hwfn *p_hwfn, u16 num_elem); 302 303 /** 304 * @brief qed_eq_setup - Reset the EQ to its start state. 305 * 306 * @param p_hwfn 307 */ 308 void qed_eq_setup(struct qed_hwfn *p_hwfn); 309 310 /** 311 * @brief qed_eq_free - deallocates the given EQ struct. 312 * 313 * @param p_hwfn 314 */ 315 void qed_eq_free(struct qed_hwfn *p_hwfn); 316 317 /** 318 * @brief qed_eq_prod_update - update the FW with default EQ producer 319 * 320 * @param p_hwfn 321 * @param prod 322 */ 323 void qed_eq_prod_update(struct qed_hwfn *p_hwfn, 324 u16 prod); 325 326 /** 327 * @brief qed_eq_completion - Completes currently pending EQ elements 328 * 329 * @param p_hwfn 330 * @param cookie 331 * 332 * @return int 333 */ 334 int qed_eq_completion(struct qed_hwfn *p_hwfn, 335 void *cookie); 336 337 /** 338 * @brief qed_spq_completion - Completes a single event 339 * 340 * @param p_hwfn 341 * @param echo - echo value from cookie (used for determining completion) 342 * @param p_data - data from cookie (used in callback function if applicable) 343 * 344 * @return int 345 */ 346 int qed_spq_completion(struct qed_hwfn *p_hwfn, 347 __le16 echo, 348 u8 fw_return_code, 349 union event_ring_data *p_data); 350 351 /** 352 * @brief qed_spq_get_cid - Given p_hwfn, return cid for the hwfn's SPQ 353 * 354 * @param p_hwfn 355 * 356 * @return u32 - SPQ CID 357 */ 358 u32 qed_spq_get_cid(struct qed_hwfn *p_hwfn); 359 360 /** 361 * @brief qed_consq_alloc - Allocates & initializes an ConsQ 362 * struct 363 * 364 * @param p_hwfn 365 * 366 * @return int 367 */ 368 int qed_consq_alloc(struct qed_hwfn *p_hwfn); 369 370 /** 371 * @brief qed_consq_setup - Reset the ConsQ to its start state. 372 * 373 * @param p_hwfn 374 */ 375 void qed_consq_setup(struct qed_hwfn *p_hwfn); 376 377 /** 378 * @brief qed_consq_free - deallocates the given ConsQ struct. 379 * 380 * @param p_hwfn 381 */ 382 void qed_consq_free(struct qed_hwfn *p_hwfn); 383 384 /** 385 * @file 386 * 387 * @brief Slow-hwfn low-level commands (Ramrods) function definitions. 388 */ 389 390 #define QED_SP_EQ_COMPLETION 0x01 391 #define QED_SP_CQE_COMPLETION 0x02 392 393 struct qed_sp_init_data { 394 u32 cid; 395 u16 opaque_fid; 396 397 /* Information regarding operation upon sending & completion */ 398 enum spq_mode comp_mode; 399 struct qed_spq_comp_cb *p_comp_data; 400 }; 401 402 int qed_sp_init_request(struct qed_hwfn *p_hwfn, 403 struct qed_spq_entry **pp_ent, 404 u8 cmd, 405 u8 protocol, 406 struct qed_sp_init_data *p_data); 407 408 /** 409 * @brief qed_sp_pf_start - PF Function Start Ramrod 410 * 411 * This ramrod is sent to initialize a physical function (PF). It will 412 * configure the function related parameters and write its completion to the 413 * event ring specified in the parameters. 414 * 415 * Ramrods complete on the common event ring for the PF. This ring is 416 * allocated by the driver on host memory and its parameters are written 417 * to the internal RAM of the UStorm by the Function Start Ramrod. 418 * 419 * @param p_hwfn 420 * @param p_ptt 421 * @param p_tunn 422 * @param allow_npar_tx_switch 423 * 424 * @return int 425 */ 426 427 int qed_sp_pf_start(struct qed_hwfn *p_hwfn, 428 struct qed_ptt *p_ptt, 429 struct qed_tunnel_info *p_tunn, 430 bool allow_npar_tx_switch); 431 432 /** 433 * @brief qed_sp_pf_update - PF Function Update Ramrod 434 * 435 * This ramrod updates function-related parameters. Every parameter can be 436 * updated independently, according to configuration flags. 437 * 438 * @param p_hwfn 439 * 440 * @return int 441 */ 442 443 int qed_sp_pf_update(struct qed_hwfn *p_hwfn); 444 445 /** 446 * @brief qed_sp_pf_update_stag - Update firmware of new outer tag 447 * 448 * @param p_hwfn 449 * 450 * @return int 451 */ 452 int qed_sp_pf_update_stag(struct qed_hwfn *p_hwfn); 453 454 /** 455 * @brief qed_sp_pf_stop - PF Function Stop Ramrod 456 * 457 * This ramrod is sent to close a Physical Function (PF). It is the last ramrod 458 * sent and the last completion written to the PFs Event Ring. This ramrod also 459 * deletes the context for the Slowhwfn connection on this PF. 460 * 461 * @note Not required for first packet. 462 * 463 * @param p_hwfn 464 * 465 * @return int 466 */ 467 468 /** 469 * @brief qed_sp_pf_update_ufp - PF ufp update Ramrod 470 * 471 * @param p_hwfn 472 * 473 * @return int 474 */ 475 int qed_sp_pf_update_ufp(struct qed_hwfn *p_hwfn); 476 477 int qed_sp_pf_stop(struct qed_hwfn *p_hwfn); 478 479 int qed_sp_pf_update_tunn_cfg(struct qed_hwfn *p_hwfn, 480 struct qed_ptt *p_ptt, 481 struct qed_tunnel_info *p_tunn, 482 enum spq_mode comp_mode, 483 struct qed_spq_comp_cb *p_comp_data); 484 /** 485 * @brief qed_sp_heartbeat_ramrod - Send empty Ramrod 486 * 487 * @param p_hwfn 488 * 489 * @return int 490 */ 491 492 int qed_sp_heartbeat_ramrod(struct qed_hwfn *p_hwfn); 493 494 #endif 495