1 /* $OpenBSD: nofnvar.h,v 1.6 2003/06/02 19:08:58 jason Exp $ */
2
3 /*
4 * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Effort sponsored in part by the Defense Advanced Research Projects
29 * Agency (DARPA) and Air Force Research Laboratory, Air Force
30 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
31 *
32 */
33
34 struct nofn_softc {
35 struct device sc_dev;
36 void *sc_ih;
37 bus_space_handle_t sc_sh;
38 bus_space_tag_t sc_st;
39 bus_space_handle_t sc_pk_h;
40 bus_space_tag_t sc_pk_t;
41 bus_dma_tag_t sc_dmat;
42 int32_t sc_cid;
43 int sc_flags;
44 int sc_rngskip, sc_rngtick;
45 struct timeout sc_rngto;
46 u_int32_t sc_intrmask, sc_revid;
47 SIMPLEQ_HEAD(,nofn_pk_q) sc_pk_queue;
48 struct nofn_pk_q *sc_pk_current;
49 union nofn_pk_reg sc_pk_tmp, sc_pk_zero;
50 };
51
52 struct nofn_pk_q {
53 SIMPLEQ_ENTRY(nofn_pk_q) q_next;
54 int (*q_start)(struct nofn_softc *, struct nofn_pk_q *);
55 void (*q_finish)(struct nofn_softc *, struct nofn_pk_q *);
56 struct cryptkop *q_krp;
57 };
58
59 #define NOFN_FLAGS_RNG 0x01
60 #define NOFN_FLAGS_PK 0x02
61
62 #define REG_WRITE_4(sc,r,v) \
63 bus_space_write_4((sc)->sc_st, (sc)->sc_sh, (r), (v))
64 #define REG_READ_4(sc,r) \
65 bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (r))
66
67 #define PK_WRITE_4(sc,r,v) \
68 bus_space_write_4((sc)->sc_pk_t, (sc)->sc_pk_h, (r), (v))
69 #define PK_READ_4(sc,r) \
70 bus_space_read_4((sc)->sc_pk_t, (sc)->sc_pk_h, (r))
71
72 #ifndef PK_RNC_SCALER
73 #define PK_RNC_SCALER 0x00000700
74 #endif
75
76 /* C = M ^ E mod N */
77 #define NOFN_MODEXP_PAR_M 0
78 #define NOFN_MODEXP_PAR_E 1
79 #define NOFN_MODEXP_PAR_N 2