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nexus.c (257702) nexus.c (261513)
1/*-
2 * Copyright 1998 Massachusetts Institute of Technology
3 *
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose and without fee is hereby
6 * granted, provided that both the above copyright notice and this
7 * permission notice appear in all copies, that both the above
8 * copyright notice and this permission notice appear in all

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33 * machines. The function of the root nexus is to serve as an
34 * attachment point for both processors and buses, and to manage
35 * resources which are common to all of them. In particular,
36 * this code implements the core resource managers for interrupt
37 * requests and memory address space.
38 */
39
40#include <sys/cdefs.h>
1/*-
2 * Copyright 1998 Massachusetts Institute of Technology
3 *
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose and without fee is hereby
6 * granted, provided that both the above copyright notice and this
7 * permission notice appear in all copies, that both the above
8 * copyright notice and this permission notice appear in all

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33 * machines. The function of the root nexus is to serve as an
34 * attachment point for both processors and buses, and to manage
35 * resources which are common to all of them. In particular,
36 * this code implements the core resource managers for interrupt
37 * requests and memory address space.
38 */
39
40#include <sys/cdefs.h>
41__FBSDID("$FreeBSD: head/sys/mips/mips/nexus.c 257702 2013-11-05 13:48:34Z nwhitehorn $");
41__FBSDID("$FreeBSD: head/sys/mips/mips/nexus.c 261513 2014-02-05 14:44:22Z nwhitehorn $");
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/bus.h>
46#include <sys/kernel.h>
47#include <sys/malloc.h>
48#include <sys/module.h>
49#include <sys/rman.h>

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55#include <machine/bus.h>
56#include <machine/intr_machdep.h>
57#include <machine/pmap.h>
58#include <machine/resource.h>
59#include <machine/vmparam.h>
60
61#include "opt_platform.h"
62
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/bus.h>
46#include <sys/kernel.h>
47#include <sys/malloc.h>
48#include <sys/module.h>
49#include <sys/rman.h>

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55#include <machine/bus.h>
56#include <machine/intr_machdep.h>
57#include <machine/pmap.h>
58#include <machine/resource.h>
59#include <machine/vmparam.h>
60
61#include "opt_platform.h"
62
63#ifdef FDT
64#include <dev/ofw/ofw_nexus.h>
65#endif
66
67#undef NEXUS_DEBUG
68#ifdef NEXUS_DEBUG
69#define dprintf printf
70#else
71#define dprintf(x, arg...)
72#endif /* NEXUS_DEBUG */
73
74#define NUM_MIPS_IRQS 6
75
63#undef NEXUS_DEBUG
64#ifdef NEXUS_DEBUG
65#define dprintf printf
66#else
67#define dprintf(x, arg...)
68#endif /* NEXUS_DEBUG */
69
70#define NUM_MIPS_IRQS 6
71
76#ifndef FDT
77static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device");
78
79struct nexus_device {
80 struct resource_list nx_resources;
81};
82
83#define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev))
84

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97 u_long *);
98static int nexus_print_child(device_t, device_t);
99static int nexus_print_all_resources(device_t dev);
100static int nexus_probe(device_t);
101static int nexus_release_resource(device_t, device_t, int, int,
102 struct resource *);
103static int nexus_set_resource(device_t, device_t, int, int, u_long,
104 u_long);
72static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device");
73
74struct nexus_device {
75 struct resource_list nx_resources;
76};
77
78#define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev))
79

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92 u_long *);
93static int nexus_print_child(device_t, device_t);
94static int nexus_print_all_resources(device_t dev);
95static int nexus_probe(device_t);
96static int nexus_release_resource(device_t, device_t, int, int,
97 struct resource *);
98static int nexus_set_resource(device_t, device_t, int, int, u_long,
99 u_long);
105#endif
106static int nexus_activate_resource(device_t, device_t, int, int,
107 struct resource *);
108static int nexus_deactivate_resource(device_t, device_t, int, int,
109 struct resource *);
110static void nexus_hinted_child(device_t, const char *, int);
111static int nexus_setup_intr(device_t dev, device_t child,
112 struct resource *res, int flags, driver_filter_t *filt,
113 driver_intr_t *intr, void *arg, void **cookiep);
114static int nexus_teardown_intr(device_t, device_t, struct resource *,
115 void *);
116
117static device_method_t nexus_methods[] = {
100static int nexus_activate_resource(device_t, device_t, int, int,
101 struct resource *);
102static int nexus_deactivate_resource(device_t, device_t, int, int,
103 struct resource *);
104static void nexus_hinted_child(device_t, const char *, int);
105static int nexus_setup_intr(device_t dev, device_t child,
106 struct resource *res, int flags, driver_filter_t *filt,
107 driver_intr_t *intr, void *arg, void **cookiep);
108static int nexus_teardown_intr(device_t, device_t, struct resource *,
109 void *);
110
111static device_method_t nexus_methods[] = {
118#ifndef FDT
119 /* Device interface */
120 DEVMETHOD(device_probe, nexus_probe),
121 DEVMETHOD(device_attach, nexus_attach),
122
123 /* Bus interface */
124 DEVMETHOD(bus_add_child, nexus_add_child),
125 DEVMETHOD(bus_alloc_resource, nexus_alloc_resource),
126 DEVMETHOD(bus_delete_resource, nexus_delete_resource),
127 DEVMETHOD(bus_get_resource, nexus_get_resource),
128 DEVMETHOD(bus_get_resource_list, nexus_get_reslist),
129 DEVMETHOD(bus_print_child, nexus_print_child),
130 DEVMETHOD(bus_release_resource, nexus_release_resource),
131 DEVMETHOD(bus_set_resource, nexus_set_resource),
112 /* Device interface */
113 DEVMETHOD(device_probe, nexus_probe),
114 DEVMETHOD(device_attach, nexus_attach),
115
116 /* Bus interface */
117 DEVMETHOD(bus_add_child, nexus_add_child),
118 DEVMETHOD(bus_alloc_resource, nexus_alloc_resource),
119 DEVMETHOD(bus_delete_resource, nexus_delete_resource),
120 DEVMETHOD(bus_get_resource, nexus_get_resource),
121 DEVMETHOD(bus_get_resource_list, nexus_get_reslist),
122 DEVMETHOD(bus_print_child, nexus_print_child),
123 DEVMETHOD(bus_release_resource, nexus_release_resource),
124 DEVMETHOD(bus_set_resource, nexus_set_resource),
132#endif
133 DEVMETHOD(bus_setup_intr, nexus_setup_intr),
134 DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
135 DEVMETHOD(bus_activate_resource,nexus_activate_resource),
136 DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
137 DEVMETHOD(bus_hinted_child, nexus_hinted_child),
138
139 { 0, 0 }
140};
141
125 DEVMETHOD(bus_setup_intr, nexus_setup_intr),
126 DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
127 DEVMETHOD(bus_activate_resource,nexus_activate_resource),
128 DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
129 DEVMETHOD(bus_hinted_child, nexus_hinted_child),
130
131 { 0, 0 }
132};
133
142#ifndef FDT
143static driver_t nexus_driver = {
144 "nexus",
145 nexus_methods,
146 1 /* no softc */
147};
134static driver_t nexus_driver = {
135 "nexus",
136 nexus_methods,
137 1 /* no softc */
138};
148#else
149DEFINE_CLASS_1(nexus, nexus_driver, nexus_methods,
150 sizeof(struct ofw_nexus_softc), ofw_nexus_driver);
151#endif
152static devclass_t nexus_devclass;
153
139static devclass_t nexus_devclass;
140
154#ifndef FDT
155static int
156nexus_probe(device_t dev)
157{
158
159 device_set_desc(dev, "MIPS32 root nexus");
160
161 irq_rman.rm_start = 0;
162 irq_rman.rm_end = NUM_MIPS_IRQS - 1;

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382 if (rman_get_flags(r) & RF_ACTIVE) {
383 int error = bus_deactivate_resource(child, type, rid, r);
384 if (error)
385 return error;
386 }
387
388 return (rman_release_resource(r));
389}
141static int
142nexus_probe(device_t dev)
143{
144
145 device_set_desc(dev, "MIPS32 root nexus");
146
147 irq_rman.rm_start = 0;
148 irq_rman.rm_end = NUM_MIPS_IRQS - 1;

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368 if (rman_get_flags(r) & RF_ACTIVE) {
369 int error = bus_deactivate_resource(child, type, rid, r);
370 if (error)
371 return error;
372 }
373
374 return (rman_release_resource(r));
375}
390#endif
391
392static int
393nexus_activate_resource(device_t bus, device_t child, int type, int rid,
394 struct resource *r)
395{
396 void *vaddr;
397 vm_paddr_t paddr;
398 vm_size_t psize;

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377static int
378nexus_activate_resource(device_t bus, device_t child, int type, int rid,
379 struct resource *r)
380{
381 void *vaddr;
382 vm_paddr_t paddr;
383 vm_size_t psize;

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