1 /*-
2 * Copyright (c) 2015 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Semihalf under
6 * the sponsorship of the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: releng/11.2/sys/arm64/arm64/gic_v3_var.h 305529 2016-09-07 12:10:30Z andrew $
30 */
31
32 #ifndef _GIC_V3_VAR_H_
33 #define _GIC_V3_VAR_H_
34
35 #define GIC_V3_DEVSTR "ARM Generic Interrupt Controller v3.0"
36
37 DECLARE_CLASS(gic_v3_driver);
38
39 struct gic_v3_irqsrc;
40
41 struct redist_lpis {
42 vm_offset_t conf_base;
43 vm_offset_t pend_base[MAXCPU];
44 uint64_t flags;
45 };
46
47 struct gic_redists {
48 /*
49 * Re-Distributor region description.
50 * We will have few of those depending
51 * on the #redistributor-regions property in FDT.
52 */
53 struct resource ** regions;
54 /* Number of Re-Distributor regions */
55 u_int nregions;
56 /* Per-CPU Re-Distributor handler */
57 struct resource * pcpu[MAXCPU];
58 /* LPIs data */
59 struct redist_lpis lpis;
60 };
61
62 struct gic_v3_softc {
63 device_t dev;
64 struct resource ** gic_res;
65 struct mtx gic_mtx;
66 /* Distributor */
67 struct resource * gic_dist;
68 /* Re-Distributors */
69 struct gic_redists gic_redists;
70
71 u_int gic_nirqs;
72 u_int gic_idbits;
73
74 boolean_t gic_registered;
75
76 int gic_nchildren;
77 device_t *gic_children;
78 struct intr_pic *gic_pic;
79 struct gic_v3_irqsrc *gic_irqs;
80 };
81
82 #define GIC_INTR_ISRC(sc, irq) (&sc->gic_irqs[irq].gi_isrc)
83
84 MALLOC_DECLARE(M_GIC_V3);
85
86 /* ivars */
87 enum {
88 GICV3_IVAR_NIRQS,
89 GICV3_IVAR_REDIST_VADDR,
90 };
91
92 __BUS_ACCESSOR(gicv3, nirqs, GICV3, NIRQS, u_int);
93 __BUS_ACCESSOR(gicv3, redist_vaddr, GICV3, REDIST_VADDR, void *);
94
95 /* Device methods */
96 int gic_v3_attach(device_t dev);
97 int gic_v3_detach(device_t dev);
98 int arm_gic_v3_intr(void *);
99
100 uint32_t gic_r_read_4(device_t, bus_size_t);
101 uint64_t gic_r_read_8(device_t, bus_size_t);
102 void gic_r_write_4(device_t, bus_size_t, uint32_t var);
103 void gic_r_write_8(device_t, bus_size_t, uint64_t var);
104
105 /*
106 * GIC Distributor accessors.
107 * Notice that only GIC sofc can be passed.
108 */
109 #define gic_d_read(sc, len, reg) \
110 ({ \
111 bus_read_##len(sc->gic_dist, reg); \
112 })
113
114 #define gic_d_write(sc, len, reg, val) \
115 ({ \
116 bus_write_##len(sc->gic_dist, reg, val);\
117 })
118
119 /* GIC Re-Distributor accessors (per-CPU) */
120 #define gic_r_read(sc, len, reg) \
121 ({ \
122 u_int cpu = PCPU_GET(cpuid); \
123 \
124 bus_read_##len( \
125 sc->gic_redists.pcpu[cpu], \
126 reg); \
127 })
128
129 #define gic_r_write(sc, len, reg, val) \
130 ({ \
131 u_int cpu = PCPU_GET(cpuid); \
132 \
133 bus_write_##len( \
134 sc->gic_redists.pcpu[cpu], \
135 reg, val); \
136 })
137
138 #endif /* _GIC_V3_VAR_H_ */
Cache object: 23ae2f9acac0b60a5ed3ff45e9d22a65
|