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Fix an assert, it should check if, when moving from 1 l1 to 512 l2 blocks,
[FreeBSD/FreeBSD.git] / sys / arm64 / arm64 / gic_v3_var.h
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  * $FreeBSD$
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_ */