1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2010 Chelsio Communications, Inc. 5 * All rights reserved. 6 * Written by: Navdeep Parhar <np@FreeBSD.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 * 31 */ 32 33 #ifndef __T4_OFFLOAD_H__ 34 #define __T4_OFFLOAD_H__ 35 #include <sys/param.h> 36 #include <sys/proc.h> 37 #include <sys/condvar.h> 38 39 #define INIT_ULPTX_WRH(w, wrlen, atomic, tid) do { \ 40 (w)->wr_hi = htonl(V_FW_WR_OP(FW_ULPTX_WR) | V_FW_WR_ATOMIC(atomic)); \ 41 (w)->wr_mid = htonl(V_FW_WR_LEN16(DIV_ROUND_UP(wrlen, 16)) | \ 42 V_FW_WR_FLOWID(tid)); \ 43 (w)->wr_lo = cpu_to_be64(0); \ 44 } while (0) 45 46 #define INIT_ULPTX_WR(w, wrlen, atomic, tid) \ 47 INIT_ULPTX_WRH(&((w)->wr), wrlen, atomic, tid) 48 49 #define INIT_TP_WR(w, tid) do { \ 50 (w)->wr.wr_hi = htonl(V_FW_WR_OP(FW_TP_WR) | \ 51 V_FW_WR_IMMDLEN(sizeof(*w) - sizeof(w->wr))); \ 52 (w)->wr.wr_mid = htonl(V_FW_WR_LEN16(DIV_ROUND_UP(sizeof(*w), 16)) | \ 53 V_FW_WR_FLOWID(tid)); \ 54 (w)->wr.wr_lo = cpu_to_be64(0); \ 55 } while (0) 56 57 #define INIT_TP_WR_MIT_CPL(w, cpl, tid) do { \ 58 INIT_TP_WR(w, tid); \ 59 OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \ 60 } while (0) 61 62 TAILQ_HEAD(stid_head, stid_region); 63 struct listen_ctx; 64 65 struct stid_region { 66 TAILQ_ENTRY(stid_region) link; 67 u_int used; /* # of stids used by this region */ 68 u_int free; /* # of contiguous stids free right after this region */ 69 }; 70 71 /* 72 * Max # of ATIDs. The absolute HW max is 14b (enough for 16K) but we reserve 73 * the upper 3b for use as a cookie to demux the reply. 74 */ 75 #define MAX_ATIDS 2048U 76 77 union aopen_entry { 78 void *data; 79 union aopen_entry *next; 80 }; 81 82 struct cxgbe_snd_tag { 83 struct m_snd_tag com; 84 struct adapter *adapter; 85 u_int flags; 86 struct mtx lock; 87 int port_id; 88 int etid; 89 struct sge_wrq *eo_txq; 90 uint16_t iqid; 91 int8_t schedcl; 92 uint64_t max_rate; /* in bytes/s */ 93 int8_t next_credits; /* need these many tx credits next */ 94 uint8_t next_nsegs; /* next WR will have these many GL segs total */ 95 uint8_t next_msegs; /* max segs for a single mbuf in next chain */ 96 uint8_t tx_total; /* total tx WR credits (in 16B units) */ 97 uint8_t tx_credits; /* tx WR credits (in 16B units) available */ 98 uint8_t tx_nocompl; /* tx WR credits since last compl request */ 99 uint8_t ncompl; /* # of completions outstanding. */ 100 }; 101 102 static inline struct cxgbe_snd_tag * 103 mst_to_cst(struct m_snd_tag *t) 104 { 105 106 return (__containerof(t, struct cxgbe_snd_tag, com)); 107 } 108 109 union etid_entry { 110 struct cxgbe_snd_tag *cst; 111 union etid_entry *next; 112 }; 113 114 /* 115 * Holds the size, base address, free list start, etc of the TID, server TID, 116 * and active-open TID tables. The tables themselves are allocated dynamically. 117 */ 118 struct tid_info { 119 void **tid_tab; 120 u_int ntids; 121 u_int tids_in_use; 122 123 struct mtx stid_lock __aligned(CACHE_LINE_SIZE); 124 struct listen_ctx **stid_tab; 125 u_int nstids; 126 u_int stid_base; 127 u_int stids_in_use; 128 u_int nstids_free_head; /* # of available stids at the beginning */ 129 struct stid_head stids; 130 131 struct mtx atid_lock __aligned(CACHE_LINE_SIZE); 132 union aopen_entry *atid_tab; 133 union aopen_entry *afree; 134 u_int natids; 135 u_int atids_in_use; 136 137 struct mtx ftid_lock __aligned(CACHE_LINE_SIZE); 138 struct cv ftid_cv; 139 struct filter_entry *ftid_tab; 140 u_int nftids; 141 u_int ftid_base; 142 u_int ftids_in_use; 143 144 struct mtx hftid_lock __aligned(CACHE_LINE_SIZE); 145 struct cv hftid_cv; 146 void **hftid_tab; 147 /* ntids, tids_in_use */ 148 149 struct mtx etid_lock __aligned(CACHE_LINE_SIZE); 150 union etid_entry *etid_tab; 151 union etid_entry *efree; 152 u_int netids; 153 u_int etid_base; 154 u_int etids_in_use; 155 }; 156 157 struct t4_range { 158 u_int start; 159 u_int size; 160 }; 161 162 struct t4_virt_res { /* virtualized HW resources */ 163 struct t4_range ddp; 164 struct t4_range iscsi; 165 struct t4_range stag; 166 struct t4_range rq; 167 struct t4_range pbl; 168 struct t4_range qp; 169 struct t4_range cq; 170 struct t4_range srq; 171 struct t4_range ocq; 172 struct t4_range l2t; 173 struct t4_range key; 174 }; 175 176 enum { 177 ULD_TOM = 0, 178 ULD_IWARP, 179 ULD_ISCSI, 180 ULD_MAX = ULD_ISCSI 181 }; 182 183 struct adapter; 184 struct port_info; 185 struct uld_info { 186 SLIST_ENTRY(uld_info) link; 187 int refcount; 188 int uld_id; 189 int (*activate)(struct adapter *); 190 int (*deactivate)(struct adapter *); 191 }; 192 193 struct tom_tunables { 194 int cong_algorithm; 195 int sndbuf; 196 int ddp; 197 int rx_coalesce; 198 int tls; 199 int *tls_rx_ports; 200 int num_tls_rx_ports; 201 int tx_align; 202 int tx_zcopy; 203 int cop_managed_offloading; 204 }; 205 /* iWARP driver tunables */ 206 struct iw_tunables { 207 int wc_en; 208 }; 209 #ifdef TCP_OFFLOAD 210 int t4_register_uld(struct uld_info *); 211 int t4_unregister_uld(struct uld_info *); 212 int t4_activate_uld(struct adapter *, int); 213 int t4_deactivate_uld(struct adapter *, int); 214 int uld_active(struct adapter *, int); 215 #endif 216 #endif 217