xref: /freebsd/sys/dev/cxgbe/offload.h (revision 13464e4a44fc58490a03bb8bfc7e3c972e9c30b2)
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  * $FreeBSD$
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 
57 TAILQ_HEAD(stid_head, stid_region);
58 struct listen_ctx;
59 
60 struct 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 
71 union 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  */
80 struct 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 
111 struct t4_range {
112 	u_int start;
113 	u_int size;
114 };
115 
116 struct 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 
129 enum {
130 	ULD_TOM = 0,
131 	ULD_IWARP,
132 	ULD_ISCSI,
133 	ULD_MAX = ULD_ISCSI
134 };
135 
136 struct adapter;
137 struct port_info;
138 struct 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 
146 struct tom_tunables {
147 	int sndbuf;
148 	int ddp;
149 	int rx_coalesce;
150 	int tx_align;
151 	int tx_zcopy;
152 };
153 
154 #ifdef TCP_OFFLOAD
155 int t4_register_uld(struct uld_info *);
156 int t4_unregister_uld(struct uld_info *);
157 int t4_activate_uld(struct adapter *, int);
158 int t4_deactivate_uld(struct adapter *, int);
159 int uld_active(struct adapter *, int);
160 #endif
161 #endif
162