1 /* $OpenBSD: lofnvar.h,v 1.9 2003/06/02 19:08:58 jason Exp $ */
2
3 /*
4 * Copyright (c) 2001-2002 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 #define LOFN_RNGBUF_SIZE 8 /* size in 32 bit elements */
35
36 struct lofn_softc {
37 struct device sc_dv;
38 void * sc_ih;
39 bus_space_handle_t sc_sh;
40 bus_space_tag_t sc_st;
41 bus_dma_tag_t sc_dmat;
42 u_int32_t sc_rngbuf[LOFN_RNGBUF_SIZE], sc_ier;
43 int32_t sc_cid;
44 union lofn_reg sc_tmp;
45 union lofn_reg sc_zero;
46 SIMPLEQ_HEAD(,lofn_q) sc_queue;
47 struct lofn_q *sc_current;
48 };
49
50 struct lofn_q {
51 SIMPLEQ_ENTRY(lofn_q) q_next;
52 int (*q_start)(struct lofn_softc *, struct lofn_q *);
53 void (*q_finish)(struct lofn_softc *, struct lofn_q *);
54 struct cryptkop *q_krp;
55 };
56
57 #define READ_REG(sc,r) \
58 bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (r))
59 #define READ_REG_0(sc,r) READ_REG((sc), (r) | LOFN_WIN_0)
60 #define READ_REG_1(sc,r) READ_REG((sc), (r) | LOFN_WIN_1)
61 #define READ_REG_2(sc,r) READ_REG((sc), (r) | LOFN_WIN_2)
62 #define READ_REG_3(sc,r) READ_REG((sc), (r) | LOFN_WIN_3)
63
64 #define WRITE_REG(sc,r,v) \
65 bus_space_write_4((sc)->sc_st, (sc)->sc_sh, (r), (v))
66 #define WRITE_REG_0(sc,r,v) WRITE_REG((sc), (r) | LOFN_WIN_0, (v))
67 #define WRITE_REG_1(sc,r,v) WRITE_REG((sc), (r) | LOFN_WIN_1, (v))
68 #define WRITE_REG_2(sc,r,v) WRITE_REG((sc), (r) | LOFN_WIN_2, (v))
69 #define WRITE_REG_3(sc,r,v) WRITE_REG((sc), (r) | LOFN_WIN_3, (v))
70
71 #ifndef LOFN_RNG_SCALAR
72 #define LOFN_RNG_SCALAR 0x00000700
73 #endif
74
75 /* C = M ^ E mod N */
76 #define LOFN_MODEXP_PAR_M 0
77 #define LOFN_MODEXP_PAR_E 1
78 #define LOFN_MODEXP_PAR_N 2