offload.h revision 331769 
1/*-
2 * Copyright (c) 2010 Chelsio Communications, Inc.
3 * All rights reserved.
4 * Written by: Navdeep Parhar <np@FreeBSD.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: stable/11/sys/dev/cxgbe/offload.h 331769 2018-03-30 18:06:29Z hselasky $
28 *
29 */
30
31#ifndef __T4_OFFLOAD_H__
32#define __T4_OFFLOAD_H__
33
34#define INIT_ULPTX_WRH(w, wrlen, atomic, tid) do { \
35	(w)->wr_hi = htonl(V_FW_WR_OP(FW_ULPTX_WR) | V_FW_WR_ATOMIC(atomic)); \
36	(w)->wr_mid = htonl(V_FW_WR_LEN16(DIV_ROUND_UP(wrlen, 16)) | \
37			       V_FW_WR_FLOWID(tid)); \
38	(w)->wr_lo = cpu_to_be64(0); \
39} while (0)
40
41#define INIT_ULPTX_WR(w, wrlen, atomic, tid) \
42    INIT_ULPTX_WRH(&((w)->wr), wrlen, atomic, tid)
43
44#define INIT_TP_WR(w, tid) do { \
45	(w)->wr.wr_hi = htonl(V_FW_WR_OP(FW_TP_WR) | \
46                              V_FW_WR_IMMDLEN(sizeof(*w) - sizeof(w->wr))); \
47	(w)->wr.wr_mid = htonl(V_FW_WR_LEN16(DIV_ROUND_UP(sizeof(*w), 16)) | \
48                               V_FW_WR_FLOWID(tid)); \
49	(w)->wr.wr_lo = cpu_to_be64(0); \
50} while (0)
51
52#define INIT_TP_WR_MIT_CPL(w, cpl, tid) do { \
53	INIT_TP_WR(w, tid); \
54	OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \
55} while (0)
56
57TAILQ_HEAD(stid_head, stid_region);
58struct listen_ctx;
59
60struct stid_region {
61	TAILQ_ENTRY(stid_region) link;
62	u_int used;	/* # of stids used by this region */
63	u_int free;	/* # of contiguous stids free right after this region */
64};
65
66/*
67 * Max # of ATIDs.  The absolute HW max is 16K but we keep it lower.
68 */
69#define MAX_ATIDS 8192U
70
71union aopen_entry {
72	void *data;
73	union aopen_entry *next;
74};
75
76/*
77 * Holds the size, base address, free list start, etc of the TID, server TID,
78 * and active-open TID tables.  The tables themselves are allocated dynamically.
79 */
80struct tid_info {
81	void **tid_tab;
82	u_int ntids;
83	u_int tids_in_use;
84
85	struct mtx stid_lock __aligned(CACHE_LINE_SIZE);
86	struct listen_ctx **stid_tab;
87	u_int nstids;
88	u_int stid_base;
89	u_int stids_in_use;
90	u_int nstids_free_head;	/* # of available stids at the beginning */
91	struct stid_head stids;
92
93	struct mtx atid_lock __aligned(CACHE_LINE_SIZE);
94	union aopen_entry *atid_tab;
95	u_int natids;
96	union aopen_entry *afree;
97	u_int atids_in_use;
98
99	struct mtx ftid_lock __aligned(CACHE_LINE_SIZE);
100	struct filter_entry *ftid_tab;
101	u_int nftids;
102	u_int ftid_base;
103	u_int ftids_in_use;
104
105	struct mtx etid_lock __aligned(CACHE_LINE_SIZE);
106	struct etid_entry *etid_tab;
107	u_int netids;
108	u_int etid_base;
109};
110
111struct t4_range {
112	u_int start;
113	u_int size;
114};
115
116struct t4_virt_res {                      /* virtualized HW resources */
117	struct t4_range ddp;
118	struct t4_range iscsi;
119	struct t4_range stag;
120	struct t4_range rq;
121	struct t4_range pbl;
122	struct t4_range qp;
123	struct t4_range cq;
124	struct t4_range srq;
125	struct t4_range ocq;
126	struct t4_range l2t;
127};
128
129enum {
130	ULD_TOM = 0,
131	ULD_IWARP,
132	ULD_ISCSI,
133	ULD_MAX = ULD_ISCSI
134};
135
136struct adapter;
137struct port_info;
138struct uld_info {
139	SLIST_ENTRY(uld_info) link;
140	int refcount;
141	int uld_id;
142	int (*activate)(struct adapter *);
143	int (*deactivate)(struct adapter *);
144};
145
146struct tom_tunables {
147	int cong_algorithm;
148	int sndbuf;
149	int ddp;
150	int rx_coalesce;
151	int tx_align;
152	int tx_zcopy;
153};
154/* iWARP driver tunables */
155struct iw_tunables {
156	int wc_en;
157};
158#ifdef TCP_OFFLOAD
159int t4_register_uld(struct uld_info *);
160int t4_unregister_uld(struct uld_info *);
161int t4_activate_uld(struct adapter *, int);
162int t4_deactivate_uld(struct adapter *, int);
163void t4_iscsi_init(struct adapter *, u_int, const u_int *);
164int uld_active(struct adapter *, int);
165#endif
166#endif
167