1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/* $OpenBSD: lofn.c,v 1.8 2001/07/08 18:05:43 brad Exp $ */
/*
* Copyright (c) 2001 Jason L. Wright (jason@thought.net)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Jason L. Wright
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Driver for the Hifn 6500 assymmetric encryption processor.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/pmap.h>
#include <machine/pmap.h>
#include <sys/device.h>
#include <crypto/cryptodev.h>
#include <dev/rndvar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/lofnreg.h>
#include <dev/pci/lofnvar.h>
/*
* Prototypes and count for the pci_device structure
*/
int lofn_probe __P((struct device *, void *, void *));
void lofn_attach __P((struct device *, struct device *, void *));
struct cfattach lofn_ca = {
sizeof(struct lofn_softc), lofn_probe, lofn_attach,
};
struct cfdriver lofn_cd = {
0, "lofn", DV_DULL
};
int lofn_intr __P((void *));
void lofn_putnum __P((struct lofn_softc *, u_int32_t, u_int32_t,
u_int32_t *, u_int32_t));
int lofn_getnum __P((struct lofn_softc *, u_int32_t, u_int32_t,
u_int32_t *num, u_int32_t *numlen));
int
lofn_probe(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct pci_attach_args *pa = (struct pci_attach_args *) aux;
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_HIFN &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_HIFN_6500)
return (1);
return (0);
}
void
lofn_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct lofn_softc *sc = (struct lofn_softc *)self;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pci_intr_handle_t ih;
const char *intrstr = NULL;
bus_size_t iosize;
u_int32_t cmd;
cmd = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
cmd |= PCI_COMMAND_MEM_ENABLE;
pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, cmd);
cmd = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
if (!(cmd & PCI_COMMAND_MEM_ENABLE)) {
printf(": failed to enable memory mapping\n");
return;
}
if (pci_mapreg_map(pa, LOFN_BAR0, PCI_MAPREG_TYPE_MEM, 0,
&sc->sc_st, &sc->sc_sh, NULL, &iosize, 0)) {
printf(": can't map mem space\n");
return;
}
sc->sc_dmat = pa->pa_dmat;
if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin,
pa->pa_intrline, &ih)) {
printf(": couldn't map interrupt\n");
goto fail;
}
intrstr = pci_intr_string(pc, ih);
sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, lofn_intr, sc,
self->dv_xname);
if (sc->sc_ih == NULL) {
printf(": couldn't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
goto fail;
}
WRITE_REG_0(sc, LOFN_REL_RNC, LOFN_RNG_SCALAR);
/* Enable RNG */
WRITE_REG_0(sc, LOFN_REL_IER,
READ_REG_0(sc, LOFN_REL_IER) | LOFN_IER_RDY);
WRITE_REG_0(sc, LOFN_REL_CFG2,
READ_REG_0(sc, LOFN_REL_CFG2) | LOFN_CFG2_RNGENA);
printf(": %s\n", intrstr, sc->sc_sh);
return;
fail:
bus_space_unmap(sc->sc_st, sc->sc_sh, iosize);
}
int
lofn_intr(vsc)
void *vsc;
{
struct lofn_softc *sc = vsc;
u_int32_t sr;
int r = 0, i;
sr = READ_REG_0(sc, LOFN_REL_SR);
if (sr & LOFN_SR_RNG_UF) {
r = 1;
printf("%s: rng underflow (disabling)\n", sc->sc_dv.dv_xname);
WRITE_REG_0(sc, LOFN_REL_CFG2,
READ_REG_0(sc, LOFN_REL_CFG2) & (~LOFN_CFG2_RNGENA));
WRITE_REG_0(sc, LOFN_REL_IER,
READ_REG_0(sc, LOFN_REL_IER) & (~LOFN_IER_RDY));
} else if (sr & LOFN_SR_RNG_RDY) {
r = 1;
bus_space_read_region_4(sc->sc_st, sc->sc_sh, LOFN_REL_RNG,
sc->sc_rngbuf, LOFN_RNGBUF_SIZE);
for (i = 0; i < LOFN_RNGBUF_SIZE; i++)
add_true_randomness(sc->sc_rngbuf[i]);
}
return (r);
}
void
lofn_putnum(sc, win, reg, num, numlen)
struct lofn_softc *sc;
u_int32_t reg, win, *num, numlen;
{
u_int32_t i, len;
len = ((numlen >> 5) + 3) >> 2;
for (i = 0; i < len; i++)
WRITE_REG(sc, LOFN_REGADDR(win, reg, i), num[i]);
WRITE_REG(sc, LOFN_LENADDR(win, reg), numlen);
}
int
lofn_getnum(sc, win, reg, num, numlen)
struct lofn_softc *sc;
u_int32_t win, reg, *num, *numlen;
{
u_int32_t len, i;
len = READ_REG(sc, LOFN_LENADDR(win, reg)) & LOFN_LENMASK;
if (len > (*numlen))
return (-1);
(*numlen) = len;
len = ((len >> 5) + 3) >> 2;
for (i = 0; i < len; i++)
num[i] = READ_REG(sc, LOFN_REGADDR(win, reg, i));
return (0);
}
|
