1 /* $FreeBSD: src/sys/dev/hifn/hifn7751var.h,v 1.1.2.2 2003/06/04 17:56:59 sam Exp $ */
2 /* $DragonFly: src/sys/dev/crypto/hifn/hifn7751var.h,v 1.2 2003/06/17 04:28:27 dillon Exp $ */
3 /* $OpenBSD: hifn7751var.h,v 1.42 2002/04/08 17:49:42 jason Exp $ */
6 * Invertex AEON / Hifn 7751 driver
7 * Copyright (c) 1999 Invertex Inc. All rights reserved.
8 * Copyright (c) 1999 Theo de Raadt
9 * Copyright (c) 2000-2001 Network Security Technologies, Inc.
10 * http://www.netsec.net
12 * Please send any comments, feedback, bug-fixes, or feature requests to
13 * software@invertex.com.
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 * 3. The name of the author may not be used to endorse or promote products
25 * derived from this software without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
29 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
30 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
31 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
32 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
33 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
35 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
37 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 * Effort sponsored in part by the Defense Advanced Research Projects
40 * Agency (DARPA) and Air Force Research Laboratory, Air Force
41 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
45 #ifndef __HIFN7751VAR_H__
46 #define __HIFN7751VAR_H__
51 * Some configurable values for the driver. By default command+result
52 * descriptor rings are the same size. The src+dst descriptor rings
53 * are sized at 3.5x the number of potential commands. Slower parts
54 * (e.g. 7951) tend to run out of src descriptors; faster parts (7811)
55 * src+cmd/result descriptors. It's not clear that increasing the size
56 * of the descriptor rings helps performance significantly as other
57 * factors tend to come into play (e.g. copying misaligned packets).
59 #define HIFN_D_CMD_RSIZE 24 /* command descriptors */
60 #define HIFN_D_SRC_RSIZE ((HIFN_D_CMD_RSIZE * 7) / 2) /* source descriptors */
61 #define HIFN_D_RES_RSIZE HIFN_D_CMD_RSIZE /* result descriptors */
62 #define HIFN_D_DST_RSIZE HIFN_D_SRC_RSIZE /* destination descriptors */
65 * Length values for cryptography
67 #define HIFN_DES_KEY_LENGTH 8
68 #define HIFN_3DES_KEY_LENGTH 24
69 #define HIFN_MAX_CRYPT_KEY_LENGTH HIFN_3DES_KEY_LENGTH
70 #define HIFN_IV_LENGTH 8
73 * Length values for authentication
75 #define HIFN_MAC_KEY_LENGTH 64
76 #define HIFN_MD5_LENGTH 16
77 #define HIFN_SHA1_LENGTH 20
78 #define HIFN_MAC_TRUNC_LENGTH 12
80 #define MAX_SCATTER 64
83 * Data structure to hold all 4 rings and any other ring related data.
87 * Descriptor rings. We add +1 to the size to accomidate the
90 struct hifn_desc cmdr[HIFN_D_CMD_RSIZE+1];
91 struct hifn_desc srcr[HIFN_D_SRC_RSIZE+1];
92 struct hifn_desc dstr[HIFN_D_DST_RSIZE+1];
93 struct hifn_desc resr[HIFN_D_RES_RSIZE+1];
95 struct hifn_command *hifn_commands[HIFN_D_RES_RSIZE];
97 u_char command_bufs[HIFN_D_CMD_RSIZE][HIFN_MAX_COMMAND];
98 u_char result_bufs[HIFN_D_CMD_RSIZE][HIFN_MAX_RESULT];
99 u_int32_t slop[HIFN_D_CMD_RSIZE];
101 u_int64_t test_src, test_dst;
104 * Our current positions for insertion and removal from the desriptor
107 int cmdi, srci, dsti, resi;
108 volatile int cmdu, srcu, dstu, resu;
109 int cmdk, srck, dstk, resk;
112 struct hifn_session {
114 int hs_prev_op; /* XXX collapse into hs_flags? */
115 u_int8_t hs_iv[HIFN_IV_LENGTH];
118 #define HIFN_RING_SYNC(sc, r, i, f) \
119 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, (f))
121 #define HIFN_CMDR_SYNC(sc, i, f) HIFN_RING_SYNC((sc), cmdr, (i), (f))
122 #define HIFN_RESR_SYNC(sc, i, f) HIFN_RING_SYNC((sc), resr, (i), (f))
123 #define HIFN_SRCR_SYNC(sc, i, f) HIFN_RING_SYNC((sc), srcr, (i), (f))
124 #define HIFN_DSTR_SYNC(sc, i, f) HIFN_RING_SYNC((sc), dstr, (i), (f))
126 #define HIFN_CMD_SYNC(sc, i, f) \
127 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, (f))
129 #define HIFN_RES_SYNC(sc, i, f) \
130 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, (f))
132 /* We use a state machine to on sessions */
133 #define HS_STATE_FREE 0 /* unused session entry */
134 #define HS_STATE_USED 1 /* allocated, but key not on card */
135 #define HS_STATE_KEY 2 /* allocated and key is on card */
138 * Holds data specific to a single HIFN board.
141 device_t sc_dev; /* device backpointer */
142 bus_dma_tag_t sc_dmat; /* parent DMA tag decriptor */
143 struct resource *sc_bar0res;
144 bus_space_handle_t sc_sh0; /* bar0 bus space handle */
145 bus_space_tag_t sc_st0; /* bar0 bus space tag */
146 bus_size_t sc_bar0_lastreg;/* bar0 last reg written */
147 struct resource *sc_bar1res;
148 bus_space_handle_t sc_sh1; /* bar1 bus space handle */
149 bus_space_tag_t sc_st1; /* bar1 bus space tag */
150 bus_size_t sc_bar1_lastreg;/* bar1 last reg written */
151 struct resource *sc_irq;
152 void *sc_intrhand; /* interrupt handle */
155 u_int32_t sc_drammodel; /* 1=dram, 0=sram */
158 struct hifn_dma *sc_dma;
159 bus_dmamap_t sc_dmamap;
160 bus_dma_segment_t sc_dmasegs[1];
161 bus_addr_t sc_dma_physaddr;/* physical address of sc_dma */
167 #define HIFN_HAS_RNG 0x1 /* includes random number generator */
168 #define HIFN_HAS_PUBLIC 0x2 /* includes public key support */
169 #define HIFN_IS_7811 0x4 /* Hifn 7811 part */
170 struct callout sc_rngto; /* for polling RNG */
171 struct callout sc_tickto; /* for managing DMA */
173 int sc_rnghz; /* RNG polling frequency */
174 struct rndtest_state *sc_rndtest; /* RNG test state */
175 void (*sc_harvest)(struct rndtest_state *,
177 int sc_c_busy; /* command ring busy */
178 int sc_s_busy; /* source data ring busy */
179 int sc_d_busy; /* destination data ring busy */
180 int sc_r_busy; /* result ring busy */
181 int sc_active; /* for initial countdown */
182 int sc_needwakeup; /* ops q'd wating on resources */
183 int sc_curbatch; /* # ops submitted w/o int */
185 struct hifn_session sc_sessions[2048];
191 * This is the control structure used to pass commands to hifn_encrypt().
195 * Flags is the bitwise "or" values for command configuration. A single
196 * encrypt direction needs to be set:
198 * HIFN_ENCODE or HIFN_DECODE
200 * To use cryptography, a single crypto algorithm must be included:
202 * HIFN_CRYPT_3DES or HIFN_CRYPT_DES
204 * To use authentication is used, a single MAC algorithm must be included:
206 * HIFN_MAC_MD5 or HIFN_MAC_SHA1
208 * By default MD5 uses a 16 byte hash and SHA-1 uses a 20 byte hash.
209 * If the value below is set, hash values are truncated or assumed
210 * truncated to 12 bytes:
214 * Keys for encryption and authentication can be sent as part of a command,
215 * or the last key value used with a particular session can be retrieved
216 * and used again if either of these flags are not specified.
218 * HIFN_CRYPT_NEW_KEY, HIFN_MAC_NEW_KEY
222 * A number between 0 and 2048 (for DRAM models) or a number between
223 * 0 and 768 (for SRAM models). Those who don't want to use session
224 * numbers should leave value at zero and send a new crypt key and/or
225 * new MAC key on every command. If you use session numbers and
226 * don't send a key with a command, the last key sent for that same
227 * session number will be used.
229 * Warning: Using session numbers and multiboard at the same time
230 * is currently broken.
234 * Either fill in the mbuf pointer and npa=0 or
235 * fill packp[] and packl[] and set npa to > 0
239 * The number of bytes of the source_buf that are skipped over before
240 * authentication begins. This must be a number between 0 and 2^16-1
241 * and can be used by IPsec implementers to skip over IP headers.
242 * *** Value ignored if authentication not used ***
246 * The number of bytes of the source_buf that are skipped over before
247 * the cryptographic operation begins. This must be a number between 0
248 * and 2^16-1. For IPsec, this number will always be 8 bytes larger
249 * than the auth_header_skip (to skip over the ESP header).
250 * *** Value ignored if cryptography not used ***
253 struct hifn_operand {
261 bus_dma_segment_t segs[MAX_SCATTER];
263 struct hifn_command {
264 u_int16_t session_num;
265 u_int16_t base_masks, cry_masks, mac_masks;
266 u_int8_t iv[HIFN_IV_LENGTH], *ck, mac[HIFN_MAC_KEY_LENGTH];
268 int sloplen, slopidx;
270 struct hifn_operand src;
271 struct hifn_operand dst;
273 struct hifn_softc *softc;
275 struct cryptodesc *enccrd, *maccrd;
278 #define src_m src.u.m
279 #define src_io src.u.io
280 #define src_map src.map
281 #define src_mapsize src.mapsize
282 #define src_segs src.segs
283 #define src_nsegs src.nsegs
285 #define dst_m dst.u.m
286 #define dst_io dst.u.io
287 #define dst_map dst.map
288 #define dst_mapsize dst.mapsize
289 #define dst_segs dst.segs
290 #define dst_nsegs dst.nsegs
293 * Return values for hifn_crypto()
295 #define HIFN_CRYPTO_SUCCESS 0
296 #define HIFN_CRYPTO_BAD_INPUT (-1)
297 #define HIFN_CRYPTO_RINGS_FULL (-2)
299 /**************************************************************************
301 * Function: hifn_crypto
303 * Purpose: Called by external drivers to begin an encryption on the
306 * Blocking/Non-blocking Issues
307 * ============================
308 * The driver cannot block in hifn_crypto (no calls to tsleep) currently.
309 * hifn_crypto() returns HIFN_CRYPTO_RINGS_FULL if there is not enough
310 * room in any of the rings for the request to proceed.
314 * 0 for success, negative values on error
316 * Defines for negative error codes are:
318 * HIFN_CRYPTO_BAD_INPUT : The passed in command had invalid settings.
319 * HIFN_CRYPTO_RINGS_FULL : All DMA rings were full and non-blocking
320 * behaviour was requested.
322 *************************************************************************/
325 * Convert back and forth from 'sid' to 'card' and 'session'
327 #define HIFN_CARD(sid) (((sid) & 0xf0000000) >> 28)
328 #define HIFN_SESSION(sid) ((sid) & 0x000007ff)
329 #define HIFN_SID(crd,ses) (((crd) << 28) | ((ses) & 0x7ff))
334 u_int64_t hst_ibytes;
335 u_int64_t hst_obytes;
336 u_int32_t hst_ipackets;
337 u_int32_t hst_opackets;
338 u_int32_t hst_invalid;
339 u_int32_t hst_nomem; /* malloc or one of hst_nomem_* */
341 u_int32_t hst_noirq; /* IRQ for no reason */
342 u_int32_t hst_totbatch; /* ops submitted w/o interrupt */
343 u_int32_t hst_maxbatch; /* max ops submitted together */
344 u_int32_t hst_unaligned; /* unaligned src caused copy */
346 * The following divides hst_nomem into more specific buckets.
348 u_int32_t hst_nomem_map; /* bus_dmamap_create failed */
349 u_int32_t hst_nomem_load; /* bus_dmamap_load_* failed */
350 u_int32_t hst_nomem_mbuf; /* MGET* failed */
351 u_int32_t hst_nomem_mcl; /* MCLGET* failed */
352 u_int32_t hst_nomem_cr; /* out of command/result descriptor */
353 u_int32_t hst_nomem_sd; /* out of src/dst descriptors */
356 #endif /* __HIFN7751VAR_H__ */