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; 109 110 unsigned int nhash; 111 unsigned int hash_base; 112 113 union aopen_entry *atid_tab; 114 unsigned int natids; 115 unsigned int atid_base; 116 117 struct filter_entry *hpftid_tab; 118 unsigned long *hpftid_bmap; 119 unsigned int nhpftids; 120 unsigned int hpftid_base; 121 122 struct filter_entry *ftid_tab; 123 unsigned long *ftid_bmap; 124 unsigned int nftids; 125 unsigned int ftid_base; 126 unsigned int aftid_base; 127 unsigned int aftid_end; 128 /* Server filter region */ 129 unsigned int sftid_base; 130 unsigned int nsftids; 131 132 spinlock_t atid_lock ____cacheline_aligned_in_smp; 133 union aopen_entry *afree; 134 unsigned int atids_in_use; 135 136 spinlock_t stid_lock; 137 unsigned int stids_in_use; 138 unsigned int v6_stids_in_use; 139 unsigned int sftids_in_use; 140 141 /* ETHOFLD range */ 142 struct eotid_entry *eotid_tab; 143 unsigned long *eotid_bmap; 144 unsigned int eotid_base; 145 unsigned int neotids; 146 147 /* TIDs in the TCAM */ 148 atomic_t tids_in_use; 149 /* TIDs in the HASH */ 150 atomic_t hash_tids_in_use; 151 atomic_t conns_in_use; 152 /* ETHOFLD TIDs used for rate limiting */ 153 atomic_t eotids_in_use; 154 155 /* lock for setting/clearing filter bitmap */ 156 spinlock_t ftid_lock; 157 158 unsigned int tc_hash_tids_max_prio; 159 }; 160 161 static inline void *lookup_tid(const struct tid_info *t, unsigned int tid) 162 { 163 tid -= t->tid_base; 164 return tid < t->ntids ? t->tid_tab[tid] : NULL; 165 } 166 167 static inline bool tid_out_of_range(const struct tid_info *t, unsigned int tid) 168 { 169 return ((tid - t->tid_base) >= t->ntids); 170 } 171 172 static inline void *lookup_atid(const struct tid_info *t, unsigned int atid) 173 { 174 return atid < t->natids ? t->atid_tab[atid].data : NULL; 175 } 176 177 static inline void *lookup_stid(const struct tid_info *t, unsigned int stid) 178 { 179 /* Is it a server filter TID? */ 180 if (t->nsftids && (stid >= t->sftid_base)) { 181 stid -= t->sftid_base; 182 stid += t->nstids; 183 } else { 184 stid -= t->stid_base; 185 } 186 187 return stid < (t->nstids + t->nsftids) ? t->stid_tab[stid].data : NULL; 188 } 189 190 static inline void cxgb4_insert_tid(struct tid_info *t, void *data, 191 unsigned int tid, unsigned short family) 192 { 193 t->tid_tab[tid - t->tid_base] = data; 194 if (t->hash_base && (tid >= t->hash_base)) { 195 if (family == AF_INET6) 196 atomic_add(2, &t->hash_tids_in_use); 197 else 198 atomic_inc(&t->hash_tids_in_use); 199 } else { 200 if (family == AF_INET6) 201 atomic_add(2, &t->tids_in_use); 202 else 203 atomic_inc(&t->tids_in_use); 204 } 205 atomic_inc(&t->conns_in_use); 206 } 207 208 static inline struct eotid_entry *cxgb4_lookup_eotid(struct tid_info *t, 209 u32 eotid) 210 { 211 return eotid < t->neotids ? &t->eotid_tab[eotid] : NULL; 212 } 213 214 static inline int cxgb4_get_free_eotid(struct tid_info *t) 215 { 216 int eotid; 217 218 eotid = find_first_zero_bit(t->eotid_bmap, t->neotids); 219 if (eotid >= t->neotids) 220 eotid = -1; 221 222 return eotid; 223 } 224 225 static inline void cxgb4_alloc_eotid(struct tid_info *t, u32 eotid, void *data) 226 { 227 set_bit(eotid, t->eotid_bmap); 228 t->eotid_tab[eotid].data = data; 229 atomic_inc(&t->eotids_in_use); 230 } 231 232 static inline void cxgb4_free_eotid(struct tid_info *t, u32 eotid) 233 { 234 clear_bit(eotid, t->eotid_bmap); 235 t->eotid_tab[eotid].data = NULL; 236 atomic_dec(&t->eotids_in_use); 237 } 238 239 int cxgb4_alloc_atid(struct tid_info *t, void *data); 240 int cxgb4_alloc_stid(struct tid_info *t, int family, void *data); 241 int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data); 242 void cxgb4_free_atid(struct tid_info *t, unsigned int atid); 243 void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family); 244 void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid, 245 unsigned short family); 246 struct in6_addr; 247 248 int cxgb4_create_server(const struct net_device *dev, unsigned int stid, 249 __be32 sip, __be16 sport, __be16 vlan, 250 unsigned int queue); 251 int cxgb4_create_server6(const struct net_device *dev, unsigned int stid, 252 const struct in6_addr *sip, __be16 sport, 253 unsigned int queue); 254 int cxgb4_remove_server(const struct net_device *dev, unsigned int stid, 255 unsigned int queue, bool ipv6); 256 int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid, 257 __be32 sip, __be16 sport, __be16 vlan, 258 unsigned int queue, 259 unsigned char port, unsigned char mask); 260 int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid, 261 unsigned int queue, bool ipv6); 262 263 /* Filter operation context to allow callers of cxgb4_set_filter() and 264 * cxgb4_del_filter() to wait for an asynchronous completion. 265 */ 266 struct filter_ctx { 267 struct completion completion; /* completion rendezvous */ 268 void *closure; /* caller's opaque information */ 269 int result; /* result of operation */ 270 u32 tid; /* to store tid */ 271 }; 272 273 struct chcr_ktls { 274 refcount_t ktls_refcount; 275 }; 276 277 struct ch_filter_specification; 278 279 int cxgb4_get_free_ftid(struct net_device *dev, u8 family, bool hash_en, 280 u32 tc_prio); 281 int __cxgb4_set_filter(struct net_device *dev, int filter_id, 282 struct ch_filter_specification *fs, 283 struct filter_ctx *ctx); 284 int __cxgb4_del_filter(struct net_device *dev, int filter_id, 285 struct ch_filter_specification *fs, 286 struct filter_ctx *ctx); 287 int cxgb4_set_filter(struct net_device *dev, int filter_id, 288 struct ch_filter_specification *fs); 289 int cxgb4_del_filter(struct net_device *dev, int filter_id, 290 struct ch_filter_specification *fs); 291 int cxgb4_get_filter_counters(struct net_device *dev, unsigned int fidx, 292 u64 *hitcnt, u64 *bytecnt, bool hash); 293 294 static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue) 295 { 296 skb_set_queue_mapping(skb, (queue << 1) | prio); 297 } 298 299 enum cxgb4_uld { 300 CXGB4_ULD_INIT, 301 CXGB4_ULD_RDMA, 302 CXGB4_ULD_ISCSI, 303 CXGB4_ULD_ISCSIT, 304 CXGB4_ULD_CRYPTO, 305 CXGB4_ULD_IPSEC, 306 CXGB4_ULD_TLS, 307 CXGB4_ULD_MAX 308 }; 309 310 enum cxgb4_tx_uld { 311 CXGB4_TX_OFLD, 312 CXGB4_TX_CRYPTO, 313 CXGB4_TX_MAX 314 }; 315 316 enum cxgb4_txq_type { 317 CXGB4_TXQ_ETH, 318 CXGB4_TXQ_ULD, 319 CXGB4_TXQ_CTRL, 320 CXGB4_TXQ_MAX 321 }; 322 323 enum cxgb4_state { 324 CXGB4_STATE_UP, 325 CXGB4_STATE_START_RECOVERY, 326 CXGB4_STATE_DOWN, 327 CXGB4_STATE_DETACH, 328 CXGB4_STATE_FATAL_ERROR 329 }; 330 331 enum cxgb4_control { 332 CXGB4_CONTROL_DB_FULL, 333 CXGB4_CONTROL_DB_EMPTY, 334 CXGB4_CONTROL_DB_DROP, 335 }; 336 337 struct adapter; 338 struct pci_dev; 339 struct l2t_data; 340 struct net_device; 341 struct pkt_gl; 342 struct tp_tcp_stats; 343 struct t4_lro_mgr; 344 345 struct cxgb4_range { 346 unsigned int start; 347 unsigned int size; 348 }; 349 350 struct cxgb4_virt_res { /* virtualized HW resources */ 351 struct cxgb4_range ddp; 352 struct cxgb4_range iscsi; 353 struct cxgb4_range stag; 354 struct cxgb4_range rq; 355 struct cxgb4_range srq; 356 struct cxgb4_range pbl; 357 struct cxgb4_range qp; 358 struct cxgb4_range cq; 359 struct cxgb4_range ocq; 360 struct cxgb4_range key; 361 unsigned int ncrypto_fc; 362 struct cxgb4_range ppod_edram; 363 }; 364 365 struct chcr_stats_debug { 366 atomic_t cipher_rqst; 367 atomic_t digest_rqst; 368 atomic_t aead_rqst; 369 atomic_t complete; 370 atomic_t error; 371 atomic_t fallback; 372 atomic_t tls_pdu_tx; 373 atomic_t tls_pdu_rx; 374 atomic_t tls_key; 375 #ifdef CONFIG_CHELSIO_TLS_DEVICE 376 atomic64_t ktls_tx_connection_open; 377 atomic64_t ktls_tx_connection_fail; 378 atomic64_t ktls_tx_connection_close; 379 atomic64_t ktls_tx_send_records; 380 atomic64_t ktls_tx_end_pkts; 381 atomic64_t ktls_tx_start_pkts; 382 atomic64_t ktls_tx_middle_pkts; 383 atomic64_t ktls_tx_retransmit_pkts; 384 atomic64_t ktls_tx_complete_pkts; 385 atomic64_t ktls_tx_trimmed_pkts; 386 atomic64_t ktls_tx_encrypted_packets; 387 atomic64_t ktls_tx_encrypted_bytes; 388 atomic64_t ktls_tx_ctx; 389 atomic64_t ktls_tx_ooo; 390 atomic64_t ktls_tx_skip_no_sync_data; 391 atomic64_t ktls_tx_drop_no_sync_data; 392 atomic64_t ktls_tx_drop_bypass_req; 393 394 #endif 395 }; 396 397 #if IS_ENABLED(CONFIG_CHELSIO_IPSEC_INLINE) 398 struct ch_ipsec_stats_debug { 399 atomic_t ipsec_cnt; 400 }; 401 #endif 402 403 #define OCQ_WIN_OFFSET(pdev, vres) \ 404 (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size)) 405 406 /* 407 * Block of information the LLD provides to ULDs attaching to a device. 408 */ 409 struct cxgb4_lld_info { 410 struct pci_dev *pdev; /* associated PCI device */ 411 struct l2t_data *l2t; /* L2 table */ 412 struct tid_info *tids; /* TID table */ 413 struct net_device **ports; /* device ports */ 414 const struct cxgb4_virt_res *vr; /* assorted HW resources */ 415 const unsigned short *mtus; /* MTU table */ 416 const unsigned short *rxq_ids; /* the ULD's Rx queue ids */ 417 const unsigned short *ciq_ids; /* the ULD's concentrator IQ ids */ 418 unsigned short nrxq; /* # of Rx queues */ 419 unsigned short ntxq; /* # of Tx queues */ 420 unsigned short nciq; /* # of concentrator IQ */ 421 unsigned char nchan:4; /* # of channels */ 422 unsigned char nports:4; /* # of ports */ 423 unsigned char wr_cred; /* WR 16-byte credits */ 424 unsigned char adapter_type; /* type of adapter */ 425 unsigned char fw_api_ver; /* FW API version */ 426 unsigned char crypto; /* crypto support */ 427 unsigned int fw_vers; /* FW version */ 428 unsigned int iscsi_iolen; /* iSCSI max I/O length */ 429 unsigned int cclk_ps; /* Core clock period in psec */ 430 unsigned short udb_density; /* # of user DB/page */ 431 unsigned short ucq_density; /* # of user CQs/page */ 432 unsigned int sge_host_page_size; /* SGE host page size */ 433 unsigned short filt_mode; /* filter optional components */ 434 unsigned short tx_modq[NCHAN]; /* maps each tx channel to a */ 435 /* scheduler queue */ 436 void __iomem *gts_reg; /* address of GTS register */ 437 void __iomem *db_reg; /* address of kernel doorbell */ 438 int dbfifo_int_thresh; /* doorbell fifo int threshold */ 439 unsigned int sge_ingpadboundary; /* SGE ingress padding boundary */ 440 unsigned int sge_egrstatuspagesize; /* SGE egress status page size */ 441 unsigned int sge_pktshift; /* Padding between CPL and */ 442 /* packet data */ 443 unsigned int pf; /* Physical Function we're using */ 444 bool enable_fw_ofld_conn; /* Enable connection through fw */ 445 /* WR */ 446 unsigned int max_ordird_qp; /* Max ORD/IRD depth per RDMA QP */ 447 unsigned int max_ird_adapter; /* Max IRD memory per adapter */ 448 bool ulptx_memwrite_dsgl; /* use of T5 DSGL allowed */ 449 unsigned int iscsi_tagmask; /* iscsi ddp tag mask */ 450 unsigned int iscsi_pgsz_order; /* iscsi ddp page size orders */ 451 unsigned int iscsi_llimit; /* chip's iscsi region llimit */ 452 unsigned int ulp_crypto; /* crypto lookaside support */ 453 void **iscsi_ppm; /* iscsi page pod manager */ 454 int nodeid; /* device numa node id */ 455 bool fr_nsmr_tpte_wr_support; /* FW supports FR_NSMR_TPTE_WR */ 456 bool write_w_imm_support; /* FW supports WRITE_WITH_IMMEDIATE */ 457 bool write_cmpl_support; /* FW supports WRITE_CMPL WR */ 458 }; 459 460 struct cxgb4_uld_info { 461 char name[IFNAMSIZ]; 462 void *handle; 463 unsigned int nrxq; 464 unsigned int rxq_size; 465 unsigned int ntxq; 466 bool ciq; 467 bool lro; 468 void *(*add)(const struct cxgb4_lld_info *p); 469 int (*rx_handler)(void *handle, const __be64 *rsp, 470 const struct pkt_gl *gl); 471 int (*state_change)(void *handle, enum cxgb4_state new_state); 472 int (*control)(void *handle, enum cxgb4_control control, ...); 473 int (*lro_rx_handler)(void *handle, const __be64 *rsp, 474 const struct pkt_gl *gl, 475 struct t4_lro_mgr *lro_mgr, 476 struct napi_struct *napi); 477 void (*lro_flush)(struct t4_lro_mgr *); 478 int (*tx_handler)(struct sk_buff *skb, struct net_device *dev); 479 #if IS_ENABLED(CONFIG_TLS_DEVICE) 480 const struct tlsdev_ops *tlsdev_ops; 481 #endif 482 #if IS_ENABLED(CONFIG_XFRM_OFFLOAD) 483 const struct xfrmdev_ops *xfrmdev_ops; 484 #endif 485 }; 486 487 void cxgb4_uld_enable(struct adapter *adap); 488 void cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p); 489 int cxgb4_unregister_uld(enum cxgb4_uld type); 490 int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb); 491 int cxgb4_immdata_send(struct net_device *dev, unsigned int idx, 492 const void *src, unsigned int len); 493 int cxgb4_crypto_send(struct net_device *dev, struct sk_buff *skb); 494 unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo); 495 unsigned int cxgb4_port_chan(const struct net_device *dev); 496 unsigned int cxgb4_port_e2cchan(const struct net_device *dev); 497 unsigned int cxgb4_port_viid(const struct net_device *dev); 498 unsigned int cxgb4_tp_smt_idx(enum chip_type chip, unsigned int viid); 499 unsigned int cxgb4_port_idx(const struct net_device *dev); 500 unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu, 501 unsigned int *idx); 502 unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus, 503 unsigned short header_size, 504 unsigned short data_size_max, 505 unsigned short data_size_align, 506 unsigned int *mtu_idxp); 507 void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4, 508 struct tp_tcp_stats *v6); 509 void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask, 510 const unsigned int *pgsz_order); 511 struct sk_buff *cxgb4_pktgl_to_skb(const struct pkt_gl *gl, 512 unsigned int skb_len, unsigned int pull_len); 513 int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx, u16 size); 514 int cxgb4_flush_eq_cache(struct net_device *dev); 515 int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte); 516 u64 cxgb4_read_sge_timestamp(struct net_device *dev); 517 518 enum cxgb4_bar2_qtype { CXGB4_BAR2_QTYPE_EGRESS, CXGB4_BAR2_QTYPE_INGRESS }; 519 int cxgb4_bar2_sge_qregs(struct net_device *dev, 520 unsigned int qid, 521 enum cxgb4_bar2_qtype qtype, 522 int user, 523 u64 *pbar2_qoffset, 524 unsigned int *pbar2_qid); 525 526 #endif /* !__CXGB4_ULD_H */ 527