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
|
/* $NetBSD: gbus.c,v 1.25 2021/08/07 16:18:41 thorpej Exp $ */
/*
* Copyright (c) 1997 by Matthew Jacob
* NASA AMES Research Center.
* 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 immediately at the beginning of the file, without modification,
* 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. 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
/*
* Autoconfiguration and support routines for the Gbus: the internal
* bus on AlphaServer CPU modules.
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: gbus.c,v 1.25 2021/08/07 16:18:41 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/rpb.h>
#include <machine/pte.h>
#include <alpha/tlsb/gbusreg.h>
#include <alpha/tlsb/gbusvar.h>
#include <alpha/tlsb/tlsbreg.h>
#include <alpha/tlsb/tlsbvar.h>
#include "locators.h"
#define KV(_addr) ((void *)ALPHA_PHYS_TO_K0SEG((_addr)))
struct gbus_softc {
device_t sc_dev;
int sc_tlsbnode; /* node on the TurboLaser */
};
static int gbusmatch(device_t, cfdata_t, void *);
static void gbusattach(device_t, device_t, void *);
CFATTACH_DECL_NEW(gbus, sizeof(struct gbus_softc),
gbusmatch, gbusattach, NULL, NULL);
static int gbusprint(void *, const char *);
static const struct gbus_attach_args gbus_children[] = {
{ "zsc", GBUS_DUART0_OFFSET },
{ "zsc", GBUS_DUART1_OFFSET },
{ "mcclock", GBUS_CLOCK_OFFSET },
{ NULL, 0 },
};
static int
gbusprint(void *aux, const char *pnp)
{
struct gbus_attach_args *ga = aux;
if (pnp)
aprint_normal("%s at %s", ga->ga_name, pnp);
aprint_normal(" offset 0x%lx", ga->ga_offset);
return (UNCONF);
}
static int
gbusmatch(device_t parent, cfdata_t cf, void *aux)
{
struct tlsb_dev_attach_args *ta = aux;
/*
* Make sure we're looking for a Gbus. The Gbus only
* "exists" on the CPU module that holds the primary CPU.
*
* Compute which node this should exist on by dividing the
* primary CPU by 2 (since there are up to 2 CPUs per CPU
* module).
*/
if (TLDEV_ISCPU(ta->ta_dtype) &&
ta->ta_node == (hwrpb->rpb_primary_cpu_id / 2))
return (1);
return (0);
}
static void
gbusattach(device_t parent, device_t self, void *aux)
{
struct gbus_softc *sc = device_private(self);
struct tlsb_dev_attach_args *ta = aux;
const struct gbus_attach_args *ga;
int locs[GBUSCF_NLOCS];
aprint_normal("\n");
sc->sc_dev = self;
sc->sc_tlsbnode = ta->ta_node;
/* Attach the children. */
for (ga = gbus_children; ga->ga_name != NULL; ga++) {
struct gbus_attach_args gaa = *ga;
locs[GBUSCF_OFFSET] = gaa.ga_offset;
config_found(self, &gaa, gbusprint,
CFARGS(.submatch = config_stdsubmatch,
.locators = locs));
}
}
|