1 /* 2 * This file is part of the Chelsio T4 Ethernet driver for Linux. 3 * 4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35 #ifndef __CXGB4_ULD_H 36 #define __CXGB4_ULD_H 37 38 #include <linux/cache.h> 39 #include <linux/spinlock.h> 40 #include <linux/skbuff.h> 41 #include <linux/inetdevice.h> 42 #include <linux/atomic.h> 43 #include "cxgb4.h" 44 45 #define MAX_ULD_QSETS 16 46 47 /* CPL message priority levels */ 48 enum { 49 CPL_PRIORITY_DATA = 0, /* data messages */ 50 CPL_PRIORITY_SETUP = 1, /* connection setup messages */ 51 CPL_PRIORITY_TEARDOWN = 0, /* connection teardown messages */ 52 CPL_PRIORITY_LISTEN = 1, /* listen start/stop messages */ 53 CPL_PRIORITY_ACK = 1, /* RX ACK messages */ 54 CPL_PRIORITY_CONTROL = 1 /* control messages */ 55 }; 56 57 #define INIT_TP_WR(w, tid) do { \ 58 (w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) | \ 59 FW_WR_IMMDLEN_V(sizeof(*w) - sizeof(w->wr))); \ 60 (w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*w), 16)) | \ 61 FW_WR_FLOWID_V(tid)); \ 62 (w)->wr.wr_lo = cpu_to_be64(0); \ 63 } while (0) 64 65 #define INIT_TP_WR_CPL(w, cpl, tid) do { \ 66 INIT_TP_WR(w, tid); \ 67 OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \ 68 } while (0) 69 70 #define INIT_ULPTX_WR(w, wrlen, atomic, tid) do { \ 71 (w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_ULPTX_WR) | \ 72 FW_WR_ATOMIC_V(atomic)); \ 73 (w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(wrlen, 16)) | \ 74 FW_WR_FLOWID_V(tid)); \ 75 (w)->wr.wr_lo = cpu_to_be64(0); \ 76 } while (0) 77 78 /* Special asynchronous notification message */ 79 #define CXGB4_MSG_AN ((void *)1) 80 #define TX_ULD(uld)(((uld) != CXGB4_ULD_CRYPTO) ? CXGB4_TX_OFLD :\ 81 CXGB4_TX_CRYPTO) 82 83 struct serv_entry { 84 void *data; 85 }; 86 87 union aopen_entry { 88 void *data; 89 union aopen_entry *next; 90 }; 91 92 struct eotid_entry { 93 void *data; 94 }; 95 96 /* 97 * Holds the size, base address, free list start, etc of the TID, server TID, 98 * and active-open TID tables. The tables themselves are allocated dynamically. 99 */ 100 struct tid_info { 101 void **tid_tab; 102 unsigned int tid_base; 103 unsigned int ntids; 104 105 struct serv_entry *stid_tab; 106 unsigned long *stid_bmap; 107 unsigned int nstids; 108 unsigned int stid_base; 109 unsigned int hash_base; 110 111 union aopen_entry *atid_tab; 112 unsigned int natids; 113 unsigned int atid_base; 114 115 struct filter_entry *hpftid_tab; 116 unsigned long *hpftid_bmap; 117 unsigned int nhpftids; 118 unsigned int hpftid_base; 119 120 struct filter_entry *ftid_tab; 121 unsigned long *ftid_bmap; 122 unsigned int nftids; 123 unsigned int ftid_base; 124 unsigned int aftid_base; 125 unsigned int aftid_end; 126 /* Server filter region */ 127 unsigned int sftid_base; 128 unsigned int nsftids; 129 130 spinlock_t atid_lock ____cacheline_aligned_in_smp; 131 union aopen_entry *afree; 132 unsigned int atids_in_use; 133 134 spinlock_t stid_lock; 135 unsigned int stids_in_use; 136 unsigned int v6_stids_in_use; 137 unsigned int sftids_in_use; 138 139 /* ETHOFLD range */ 140 struct eotid_entry *eotid_tab; 141 unsigned long *eotid_bmap; 142 unsigned int eotid_base; 143 unsigned int neotids; 144 145 /* TIDs in the TCAM */ 146 atomic_t tids_in_use; 147 /* TIDs in the HASH */ 148 atomic_t hash_tids_in_use; 149 atomic_t conns_in_use; 150 /* ETHOFLD TIDs used for rate limiting */ 151 atomic_t eotids_in_use; 152 153 /* lock for setting/clearing filter bitmap */ 154 spinlock_t ftid_lock; 155 156 unsigned int tc_hash_tids_max_prio; 157 }; 158 159 static inline void *lookup_tid(const struct tid_info *t, unsigned int tid) 160 { 161 tid -= t->tid_base; 162 return tid < t->ntids ? t->tid_tab[tid] : NULL; 163 } 164 165 static inline bool tid_out_of_range(const struct tid_info *t, unsigned int tid) 166 { 167 return ((tid - t->tid_base) >= t->ntids); 168 } 169 170 static inline void *lookup_atid(const struct tid_info *t, unsigned int atid) 171 { 172 return atid < t->natids ? t->atid_tab[atid].data : NULL; 173 } 174 175 static inline void *lookup_stid(const struct tid_info *t, unsigned int stid) 176 { 177 /* Is it a server filter TID? */ 178 if (t->nsftids && (stid >= t->sftid_base)) { 179 stid -= t->sftid_base; 180 stid += t->nstids; 181 } else { 182 stid -= t->stid_base; 183 } 184 185 return stid < (t->nstids + t->nsftids) ? t->stid_tab[stid].data : NULL; 186 } 187 188 static inline void cxgb4_insert_tid(struct tid_info *t, void *data, 189 unsigned int tid, unsigned short family) 190 { 191 t->tid_tab[tid - t->tid_base] = data; 192 if (t->hash_base && (tid >= t->hash_base)) { 193 if (family == AF_INET6) 194 atomic_add(2, &t->hash_tids_in_use); 195 else 196 atomic_inc(&t->hash_tids_in_use); 197 } else { 198 if (family == AF_INET6) 199 atomic_add(2, &t->tids_in_use); 200 else 201 atomic_inc(&t->tids_in_use); 202 } 203 atomic_inc(&t->conns_in_use); 204 } 205 206 static inline struct eotid_entry *cxgb4_lookup_eotid(struct tid_info *t, 207 u32 eotid) 208 { 209 return eotid < t->neotids ? &t->eotid_tab[eotid] : NULL; 210 } 211 212 static inline int cxgb4_get_free_eotid(struct tid_info *t) 213 { 214 int eotid; 215 216 eotid = find_first_zero_bit(t->eotid_bmap, t->neotids); 217 if (eotid >= t->neotids) 218 eotid = -1; 219 220 return eotid; 221 } 222 223 static inline void cxgb4_alloc_eotid(struct tid_info *t, u32 eotid, void *data) 224 { 225 set_bit(eotid, t->eotid_bmap); 226 t->eotid_tab[eotid].data = data; 227 atomic_inc(&t->eotids_in_use); 228 } 229 230 static inline void cxgb4_free_eotid(struct tid_info *t, u32 eotid) 231 { 232 clear_bit(eotid, t->eotid_bmap); 233 t->eotid_tab[eotid].data = NULL; 234 atomic_dec(&t->eotids_in_use); 235 } 236 237 int cxgb4_alloc_atid(struct tid_info *t, void *data); 238 int cxgb4_alloc_stid(struct tid_info *t, int family, void *data); 239 int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data); 240 void cxgb4_free_atid(struct tid_info *t, unsigned int atid); 241 void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family); 242 void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid, 243 unsigned short family); 244 struct in6_addr; 245 246 int cxgb4_create_server(const struct net_device *dev, unsigned int stid, 247 __be32 sip, __be16 sport, __be16 vlan, 248 unsigned int queue); 249 int cxgb4_create_server6(const struct net_device *dev, unsigned int stid, 250 const struct in6_addr *sip, __be16 sport, 251 unsigned int queue); 252 int cxgb4_remove_server(const struct net_device *dev, unsigned int stid, 253 unsigned int queue, bool ipv6); 254 int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid, 255 __be32 sip, __be16 sport, __be16 vlan, 256 unsigned int queue, 257 unsigned char port, unsigned char mask); 258 int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid, 259 unsigned int queue, bool ipv6); 260 261 /* Filter operation context to allow callers of cxgb4_set_filter() and 262 * cxgb4_del_filter() to wait for an asynchronous completion. 263 */ 264 struct filter_ctx { 265 struct completion completion; /* completion rendezvous */ 266 void *closure; /* caller's opaque information */ 267 int result; /* result of operation */ 268 u32 tid; /* to store tid */ 269 }; 270 271 struct ch_filter_specification; 272 273 int cxgb4_get_free_ftid(struct net_device *dev, u8 family, bool hash_en, 274 u32 tc_prio); 275 int __cxgb4_set_filter(struct net_device *dev, int filter_id, 276 struct ch_filter_specification *fs, 277 struct filter_ctx *ctx); 278 int __cxgb4_del_filter(struct net_device *dev, int filter_id, 279 struct ch_filter_specification *fs, 280 struct filter_ctx *ctx); 281 int cxgb4_set_filter(struct net_device *dev, int filter_id, 282 struct ch_filter_specification *fs); 283 int cxgb4_del_filter(struct net_device *dev, int filter_id, 284 struct ch_filter_specification *fs); 285 int cxgb4_get_filter_counters(struct net_device *dev, unsigned int fidx, 286 u64 *hitcnt, u64 *bytecnt, bool hash); 287 288 static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue) 289 { 290 skb_set_queue_mapping(skb, (queue << 1) | prio); 291 } 292 293 enum cxgb4_uld { 294 CXGB4_ULD_INIT, 295 CXGB4_ULD_RDMA, 296 CXGB4_ULD_ISCSI, 297 CXGB4_ULD_ISCSIT, 298 CXGB4_ULD_CRYPTO, 299 CXGB4_ULD_TLS, 300 CXGB4_ULD_MAX 301 }; 302 303 enum cxgb4_tx_uld { 304 CXGB4_TX_OFLD, 305 CXGB4_TX_CRYPTO, 306 CXGB4_TX_MAX 307 }; 308 309 enum cxgb4_txq_type { 310 CXGB4_TXQ_ETH, 311 CXGB4_TXQ_ULD, 312 CXGB4_TXQ_CTRL, 313 CXGB4_TXQ_MAX 314 }; 315 316 enum cxgb4_state { 317 CXGB4_STATE_UP, 318 CXGB4_STATE_START_RECOVERY, 319 CXGB4_STATE_DOWN, 320 CXGB4_STATE_DETACH, 321 CXGB4_STATE_FATAL_ERROR 322 }; 323 324 enum cxgb4_control { 325 CXGB4_CONTROL_DB_FULL, 326 CXGB4_CONTROL_DB_EMPTY, 327 CXGB4_CONTROL_DB_DROP, 328 }; 329 330 struct pci_dev; 331 struct l2t_data; 332 struct net_device; 333 struct pkt_gl; 334 struct tp_tcp_stats; 335 struct t4_lro_mgr; 336 337 struct cxgb4_range { 338 unsigned int start; 339 unsigned int size; 340 }; 341 342 struct cxgb4_virt_res { /* virtualized HW resources */ 343 struct cxgb4_range ddp; 344 struct cxgb4_range iscsi; 345 struct cxgb4_range stag; 346 struct cxgb4_range rq; 347 struct cxgb4_range srq; 348 struct cxgb4_range pbl; 349 struct cxgb4_range qp; 350 struct cxgb4_range cq; 351 struct cxgb4_range ocq; 352 struct cxgb4_range key; 353 unsigned int ncrypto_fc; 354 struct cxgb4_range ppod_edram; 355 }; 356 357 struct chcr_stats_debug { 358 atomic_t cipher_rqst; 359 atomic_t digest_rqst; 360 atomic_t aead_rqst; 361 atomic_t complete; 362 atomic_t error; 363 atomic_t fallback; 364 atomic_t ipsec_cnt; 365 atomic_t tls_pdu_tx; 366 atomic_t tls_pdu_rx; 367 atomic_t tls_key; 368 #ifdef CONFIG_CHELSIO_TLS_DEVICE 369 atomic64_t ktls_tx_connection_open; 370 atomic64_t ktls_tx_connection_fail; 371 atomic64_t ktls_tx_connection_close; 372 atomic64_t ktls_tx_send_records; 373 atomic64_t ktls_tx_end_pkts; 374 atomic64_t ktls_tx_start_pkts; 375 atomic64_t ktls_tx_middle_pkts; 376 atomic64_t ktls_tx_retransmit_pkts; 377 atomic64_t ktls_tx_complete_pkts; 378 atomic64_t ktls_tx_trimmed_pkts; 379 atomic64_t ktls_tx_encrypted_packets; 380 atomic64_t ktls_tx_encrypted_bytes; 381 atomic64_t ktls_tx_ctx; 382 atomic64_t ktls_tx_ooo; 383 atomic64_t ktls_tx_skip_no_sync_data; 384 atomic64_t ktls_tx_drop_no_sync_data; 385 atomic64_t ktls_tx_drop_bypass_req; 386 387 #endif 388 }; 389 390 #define OCQ_WIN_OFFSET(pdev, vres) \ 391 (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size)) 392 393 /* 394 * Block of information the LLD provides to ULDs attaching to a device. 395 */ 396 struct cxgb4_lld_info { 397 struct pci_dev *pdev; /* associated PCI device */ 398 struct l2t_data *l2t; /* L2 table */ 399 struct tid_info *tids; /* TID table */ 400 struct net_device **ports; /* device ports */ 401 const struct cxgb4_virt_res *vr; /* assorted HW resources */ 402 const unsigned short *mtus; /* MTU table */ 403 const unsigned short *rxq_ids; /* the ULD's Rx queue ids */ 404 const unsigned short *ciq_ids; /* the ULD's concentrator IQ ids */ 405 unsigned short nrxq; /* # of Rx queues */ 406 unsigned short ntxq; /* # of Tx queues */ 407 unsigned short nciq; /* # of concentrator IQ */ 408 unsigned char nchan:4; /* # of channels */ 409 unsigned char nports:4; /* # of ports */ 410 unsigned char wr_cred; /* WR 16-byte credits */ 411 unsigned char adapter_type; /* type of adapter */ 412 unsigned char fw_api_ver; /* FW API version */ 413 unsigned char crypto; /* crypto support */ 414 unsigned int fw_vers; /* FW version */ 415 unsigned int iscsi_iolen; /* iSCSI max I/O length */ 416 unsigned int cclk_ps; /* Core clock period in psec */ 417 unsigned short udb_density; /* # of user DB/page */ 418 unsigned short ucq_density; /* # of user CQs/page */ 419 unsigned int sge_host_page_size; /* SGE host page size */ 420 unsigned short filt_mode; /* filter optional components */ 421 unsigned short tx_modq[NCHAN]; /* maps each tx channel to a */ 422 /* scheduler queue */ 423 void __iomem *gts_reg; /* address of GTS register */ 424 void __iomem *db_reg; /* address of kernel doorbell */ 425 int dbfifo_int_thresh; /* doorbell fifo int threshold */ 426 unsigned int sge_ingpadboundary; /* SGE ingress padding boundary */ 427 unsigned int sge_egrstatuspagesize; /* SGE egress status page size */ 428 unsigned int sge_pktshift; /* Padding between CPL and */ 429 /* packet data */ 430 unsigned int pf; /* Physical Function we're using */ 431 bool enable_fw_ofld_conn; /* Enable connection through fw */ 432 /* WR */ 433 unsigned int max_ordird_qp; /* Max ORD/IRD depth per RDMA QP */ 434 unsigned int max_ird_adapter; /* Max IRD memory per adapter */ 435 bool ulptx_memwrite_dsgl; /* use of T5 DSGL allowed */ 436 unsigned int iscsi_tagmask; /* iscsi ddp tag mask */ 437 unsigned int iscsi_pgsz_order; /* iscsi ddp page size orders */ 438 unsigned int iscsi_llimit; /* chip's iscsi region llimit */ 439 unsigned int ulp_crypto; /* crypto lookaside support */ 440 void **iscsi_ppm; /* iscsi page pod manager */ 441 int nodeid; /* device numa node id */ 442 bool fr_nsmr_tpte_wr_support; /* FW supports FR_NSMR_TPTE_WR */ 443 bool write_w_imm_support; /* FW supports WRITE_WITH_IMMEDIATE */ 444 bool write_cmpl_support; /* FW supports WRITE_CMPL WR */ 445 }; 446 447 struct cxgb4_uld_info { 448 char name[IFNAMSIZ]; 449 void *handle; 450 unsigned int nrxq; 451 unsigned int rxq_size; 452 unsigned int ntxq; 453 bool ciq; 454 bool lro; 455 void *(*add)(const struct cxgb4_lld_info *p); 456 int (*rx_handler)(void *handle, const __be64 *rsp, 457 const struct pkt_gl *gl); 458 int (*state_change)(void *handle, enum cxgb4_state new_state); 459 int (*control)(void *handle, enum cxgb4_control control, ...); 460 int (*lro_rx_handler)(void *handle, const __be64 *rsp, 461 const struct pkt_gl *gl, 462 struct t4_lro_mgr *lro_mgr, 463 struct napi_struct *napi); 464 void (*lro_flush)(struct t4_lro_mgr *); 465 int (*tx_handler)(struct sk_buff *skb, struct net_device *dev); 466 }; 467 468 void cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p); 469 int cxgb4_unregister_uld(enum cxgb4_uld type); 470 int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb); 471 int cxgb4_immdata_send(struct net_device *dev, unsigned int idx, 472 const void *src, unsigned int len); 473 int cxgb4_crypto_send(struct net_device *dev, struct sk_buff *skb); 474 unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo); 475 unsigned int cxgb4_port_chan(const struct net_device *dev); 476 unsigned int cxgb4_port_e2cchan(const struct net_device *dev); 477 unsigned int cxgb4_port_viid(const struct net_device *dev); 478 unsigned int cxgb4_tp_smt_idx(enum chip_type chip, unsigned int viid); 479 unsigned int cxgb4_port_idx(const struct net_device *dev); 480 unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu, 481 unsigned int *idx); 482 unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus, 483 unsigned short header_size, 484 unsigned short data_size_max, 485 unsigned short data_size_align, 486 unsigned int *mtu_idxp); 487 void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4, 488 struct tp_tcp_stats *v6); 489 void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask, 490 const unsigned int *pgsz_order); 491 struct sk_buff *cxgb4_pktgl_to_skb(const struct pkt_gl *gl, 492 unsigned int skb_len, unsigned int pull_len); 493 int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx, u16 size); 494 int cxgb4_flush_eq_cache(struct net_device *dev); 495 int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte); 496 u64 cxgb4_read_sge_timestamp(struct net_device *dev); 497 498 enum cxgb4_bar2_qtype { CXGB4_BAR2_QTYPE_EGRESS, CXGB4_BAR2_QTYPE_INGRESS }; 499 int cxgb4_bar2_sge_qregs(struct net_device *dev, 500 unsigned int qid, 501 enum cxgb4_bar2_qtype qtype, 502 int user, 503 u64 *pbar2_qoffset, 504 unsigned int *pbar2_qid); 505 506 #endif /* !__CXGB4_ULD_H */ 507