xref: /freebsd/sys/dev/cxgbe/offload.h (revision 9f23cbd6cae82fd77edfad7173432fa8dccd0a95)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
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 /* cxgbe_rate_tag flags */
83 enum {
84 	EO_FLOWC_PENDING	= (1 << 0),	/* flowc needs to be sent */
85 	EO_FLOWC_RPL_PENDING	= (1 << 1),	/* flowc credits due back */
86 	EO_SND_TAG_REF		= (1 << 2),	/* kernel has a ref on us */
87 	EO_FLUSH_RPL_PENDING	= (1 << 3),	/* credit flush rpl due back */
88 };
89 
90 struct cxgbe_rate_tag {
91 	struct m_snd_tag com;
92 	struct adapter *adapter;
93 	u_int flags;
94 	struct mtx lock;
95 	int port_id;
96 	int etid;
97 	struct mbufq pending_tx, pending_fwack;
98 	int plen;
99 	struct sge_ofld_txq *eo_txq;
100 	uint32_t ctrl0;
101 	uint16_t iqid;
102 	int8_t schedcl;
103 	uint64_t max_rate;      /* in bytes/s */
104 	uint8_t tx_total;	/* total tx WR credits (in 16B units) */
105 	uint8_t tx_credits;	/* tx WR credits (in 16B units) available */
106 	uint8_t tx_nocompl;	/* tx WR credits since last compl request */
107 	uint8_t ncompl;		/* # of completions outstanding. */
108 };
109 
110 static inline struct cxgbe_rate_tag *
111 mst_to_crt(struct m_snd_tag *t)
112 {
113 	return (__containerof(t, struct cxgbe_rate_tag, com));
114 }
115 
116 union etid_entry {
117 	struct cxgbe_rate_tag *cst;
118 	union etid_entry *next;
119 };
120 
121 /*
122  * Holds the size, base address, start, end, etc. of various types of TIDs.  The
123  * tables themselves are allocated dynamically.
124  */
125 struct tid_info {
126 	u_int nstids;
127 	u_int stid_base;
128 
129 	u_int natids;
130 
131 	u_int nftids;
132 	u_int ftid_base;
133 	u_int ftid_end;
134 
135 	u_int nhpftids;
136 	u_int hpftid_base;
137 	u_int hpftid_end;
138 
139 	u_int ntids;
140 	u_int tid_base;
141 
142 	u_int netids;
143 	u_int etid_base;
144 	u_int etid_end;
145 
146 	struct mtx stid_lock __aligned(CACHE_LINE_SIZE);
147 	struct listen_ctx **stid_tab;
148 	u_int stids_in_use;
149 	u_int nstids_free_head;	/* # of available stids at the beginning */
150 	struct stid_head stids;
151 
152 	struct mtx atid_lock __aligned(CACHE_LINE_SIZE);
153 	union aopen_entry *atid_tab;
154 	union aopen_entry *afree;
155 	u_int atids_in_use;
156 
157 	/* High priority filters and normal filters share the lock and cv. */
158 	struct mtx ftid_lock __aligned(CACHE_LINE_SIZE);
159 	struct cv ftid_cv;
160 	struct filter_entry *ftid_tab;
161 	struct filter_entry *hpftid_tab;
162 	u_int ftids_in_use;
163 	u_int hpftids_in_use;
164 
165 	/*
166 	 * hashfilter and TOE are mutually exclusive and both use ntids and
167 	 * tids_in_use.  The lock and cv are used only by hashfilter.
168 	 */
169 	struct mtx hftid_lock __aligned(CACHE_LINE_SIZE);
170 	struct cv hftid_cv;
171 	void **tid_tab;
172 	u_int tids_in_use;
173 
174 	void *hftid_hash_4t;	/* LIST_HEAD(, filter_entry) *hftid_hash_4t; */
175 	u_long hftid_4t_mask;
176 	void *hftid_hash_tid;	/* LIST_HEAD(, filter_entry) *hftid_hash_tid; */
177 	u_long hftid_tid_mask;
178 
179 	struct mtx etid_lock __aligned(CACHE_LINE_SIZE);
180 	union etid_entry *etid_tab;
181 	union etid_entry *efree;
182 	u_int etids_in_use;
183 };
184 
185 struct t4_range {
186 	u_int start;
187 	u_int size;
188 };
189 
190 struct t4_virt_res {                      /* virtualized HW resources */
191 	struct t4_range ddp;
192 	struct t4_range iscsi;
193 	struct t4_range stag;
194 	struct t4_range rq;
195 	struct t4_range pbl;
196 	struct t4_range qp;
197 	struct t4_range cq;
198 	struct t4_range srq;
199 	struct t4_range ocq;
200 	struct t4_range l2t;
201 	struct t4_range key;
202 };
203 
204 enum {
205 	ULD_TOM = 0,
206 	ULD_IWARP,
207 	ULD_ISCSI,
208 	ULD_MAX = ULD_ISCSI
209 };
210 
211 struct adapter;
212 struct port_info;
213 struct uld_info {
214 	SLIST_ENTRY(uld_info) link;
215 	int refcount;
216 	int uld_id;
217 	int (*activate)(struct adapter *);
218 	int (*deactivate)(struct adapter *);
219 	void (*async_event)(struct adapter *);
220 };
221 
222 struct tom_tunables {
223 	int cong_algorithm;
224 	int sndbuf;
225 	int ddp;
226 	int rx_coalesce;
227 	int tls;
228 	int tx_align;
229 	int tx_zcopy;
230 	int cop_managed_offloading;
231 	int autorcvbuf_inc;
232 	int update_hc_on_pmtu_change;
233 	int iso;
234 };
235 
236 /* iWARP driver tunables */
237 struct iw_tunables {
238 	int wc_en;
239 };
240 
241 struct tls_tunables {
242 	int inline_keys;
243 	int combo_wrs;
244 };
245 
246 #ifdef TCP_OFFLOAD
247 int t4_register_uld(struct uld_info *);
248 int t4_unregister_uld(struct uld_info *);
249 int t4_activate_uld(struct adapter *, int);
250 int t4_deactivate_uld(struct adapter *, int);
251 int uld_active(struct adapter *, int);
252 #endif
253 #endif
254