root / hw / misc / pc-testdev.c @ a8aec295
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1 | ee0cc541 | Lucas Meneghel Rodrigues | /*
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2 | ee0cc541 | Lucas Meneghel Rodrigues | * QEMU x86 ISA testdev
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3 | ee0cc541 | Lucas Meneghel Rodrigues | *
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4 | ee0cc541 | Lucas Meneghel Rodrigues | * Copyright (c) 2012 Avi Kivity, Gerd Hoffmann, Marcelo Tosatti
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5 | ee0cc541 | Lucas Meneghel Rodrigues | *
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6 | ee0cc541 | Lucas Meneghel Rodrigues | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | ee0cc541 | Lucas Meneghel Rodrigues | * of this software and associated documentation files (the "Software"), to deal
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8 | ee0cc541 | Lucas Meneghel Rodrigues | * in the Software without restriction, including without limitation the rights
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9 | ee0cc541 | Lucas Meneghel Rodrigues | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | ee0cc541 | Lucas Meneghel Rodrigues | * copies of the Software, and to permit persons to whom the Software is
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11 | ee0cc541 | Lucas Meneghel Rodrigues | * furnished to do so, subject to the following conditions:
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12 | ee0cc541 | Lucas Meneghel Rodrigues | *
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13 | ee0cc541 | Lucas Meneghel Rodrigues | * The above copyright notice and this permission notice shall be included in
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14 | ee0cc541 | Lucas Meneghel Rodrigues | * all copies or substantial portions of the Software.
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15 | ee0cc541 | Lucas Meneghel Rodrigues | *
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16 | ee0cc541 | Lucas Meneghel Rodrigues | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | ee0cc541 | Lucas Meneghel Rodrigues | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | ee0cc541 | Lucas Meneghel Rodrigues | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | ee0cc541 | Lucas Meneghel Rodrigues | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | ee0cc541 | Lucas Meneghel Rodrigues | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | ee0cc541 | Lucas Meneghel Rodrigues | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | ee0cc541 | Lucas Meneghel Rodrigues | * THE SOFTWARE.
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23 | ee0cc541 | Lucas Meneghel Rodrigues | */
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24 | ee0cc541 | Lucas Meneghel Rodrigues | |
25 | ee0cc541 | Lucas Meneghel Rodrigues | /*
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26 | ee0cc541 | Lucas Meneghel Rodrigues | * This device is used to test KVM features specific to the x86 port, such
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27 | ee0cc541 | Lucas Meneghel Rodrigues | * as emulation, power management, interrupt routing, among others. It's meant
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28 | ee0cc541 | Lucas Meneghel Rodrigues | * to be used like:
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29 | ee0cc541 | Lucas Meneghel Rodrigues | *
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30 | ee0cc541 | Lucas Meneghel Rodrigues | * qemu-system-x86_64 -device pc-testdev -serial stdio \
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31 | ee0cc541 | Lucas Meneghel Rodrigues | * -device isa-debug-exit,iobase=0xf4,iosize=0x4 \
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32 | ee0cc541 | Lucas Meneghel Rodrigues | * -kernel /home/lmr/Code/virt-test.git/kvm/unittests/msr.flat
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33 | ee0cc541 | Lucas Meneghel Rodrigues | *
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34 | ee0cc541 | Lucas Meneghel Rodrigues | * Where msr.flat is one of the KVM unittests, present on a separate repo,
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35 | ee0cc541 | Lucas Meneghel Rodrigues | * git://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git
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36 | ee0cc541 | Lucas Meneghel Rodrigues | */
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37 | ee0cc541 | Lucas Meneghel Rodrigues | |
38 | 549db5c3 | Stefan Weil | #include "config-host.h" |
39 | 549db5c3 | Stefan Weil | #if defined(CONFIG_POSIX)
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40 | ee0cc541 | Lucas Meneghel Rodrigues | #include <sys/mman.h> |
41 | 549db5c3 | Stefan Weil | #endif
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42 | 83c9f4ca | Paolo Bonzini | #include "hw/hw.h" |
43 | 83c9f4ca | Paolo Bonzini | #include "hw/qdev.h" |
44 | 0d09e41a | Paolo Bonzini | #include "hw/isa/isa.h" |
45 | ee0cc541 | Lucas Meneghel Rodrigues | |
46 | ee0cc541 | Lucas Meneghel Rodrigues | #define IOMEM_LEN 0x10000 |
47 | ee0cc541 | Lucas Meneghel Rodrigues | |
48 | ee0cc541 | Lucas Meneghel Rodrigues | typedef struct PCTestdev { |
49 | ee0cc541 | Lucas Meneghel Rodrigues | ISADevice parent_obj; |
50 | ee0cc541 | Lucas Meneghel Rodrigues | |
51 | ee0cc541 | Lucas Meneghel Rodrigues | MemoryRegion ioport; |
52 | ee0cc541 | Lucas Meneghel Rodrigues | MemoryRegion flush; |
53 | ee0cc541 | Lucas Meneghel Rodrigues | MemoryRegion irq; |
54 | ee0cc541 | Lucas Meneghel Rodrigues | MemoryRegion iomem; |
55 | ee0cc541 | Lucas Meneghel Rodrigues | uint32_t ioport_data; |
56 | ee0cc541 | Lucas Meneghel Rodrigues | char iomem_buf[IOMEM_LEN];
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57 | ee0cc541 | Lucas Meneghel Rodrigues | } PCTestdev; |
58 | ee0cc541 | Lucas Meneghel Rodrigues | |
59 | ee0cc541 | Lucas Meneghel Rodrigues | #define TYPE_TESTDEV "pc-testdev" |
60 | ee0cc541 | Lucas Meneghel Rodrigues | #define TESTDEV(obj) \
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61 | 00e4d0db | Gerd Hoffmann | OBJECT_CHECK(PCTestdev, (obj), TYPE_TESTDEV) |
62 | ee0cc541 | Lucas Meneghel Rodrigues | |
63 | ee0cc541 | Lucas Meneghel Rodrigues | static void test_irq_line(void *opaque, hwaddr addr, uint64_t data, |
64 | ee0cc541 | Lucas Meneghel Rodrigues | unsigned len)
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65 | ee0cc541 | Lucas Meneghel Rodrigues | { |
66 | 00e4d0db | Gerd Hoffmann | PCTestdev *dev = opaque; |
67 | 00e4d0db | Gerd Hoffmann | ISADevice *isa = ISA_DEVICE(dev); |
68 | ee0cc541 | Lucas Meneghel Rodrigues | |
69 | ee0cc541 | Lucas Meneghel Rodrigues | qemu_set_irq(isa_get_irq(isa, addr), !!data); |
70 | ee0cc541 | Lucas Meneghel Rodrigues | } |
71 | ee0cc541 | Lucas Meneghel Rodrigues | |
72 | ee0cc541 | Lucas Meneghel Rodrigues | static const MemoryRegionOps test_irq_ops = { |
73 | ee0cc541 | Lucas Meneghel Rodrigues | .write = test_irq_line, |
74 | ee0cc541 | Lucas Meneghel Rodrigues | .valid.min_access_size = 1,
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75 | ee0cc541 | Lucas Meneghel Rodrigues | .valid.max_access_size = 1,
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76 | ee0cc541 | Lucas Meneghel Rodrigues | .endianness = DEVICE_LITTLE_ENDIAN, |
77 | ee0cc541 | Lucas Meneghel Rodrigues | }; |
78 | ee0cc541 | Lucas Meneghel Rodrigues | |
79 | ee0cc541 | Lucas Meneghel Rodrigues | static void test_ioport_write(void *opaque, hwaddr addr, uint64_t data, |
80 | ee0cc541 | Lucas Meneghel Rodrigues | unsigned len)
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81 | ee0cc541 | Lucas Meneghel Rodrigues | { |
82 | 00e4d0db | Gerd Hoffmann | PCTestdev *dev = opaque; |
83 | ee0cc541 | Lucas Meneghel Rodrigues | dev->ioport_data = data; |
84 | ee0cc541 | Lucas Meneghel Rodrigues | } |
85 | ee0cc541 | Lucas Meneghel Rodrigues | |
86 | ee0cc541 | Lucas Meneghel Rodrigues | static uint64_t test_ioport_read(void *opaque, hwaddr addr, unsigned len) |
87 | ee0cc541 | Lucas Meneghel Rodrigues | { |
88 | 00e4d0db | Gerd Hoffmann | PCTestdev *dev = opaque; |
89 | ee0cc541 | Lucas Meneghel Rodrigues | return dev->ioport_data;
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90 | ee0cc541 | Lucas Meneghel Rodrigues | } |
91 | ee0cc541 | Lucas Meneghel Rodrigues | |
92 | ee0cc541 | Lucas Meneghel Rodrigues | static const MemoryRegionOps test_ioport_ops = { |
93 | ee0cc541 | Lucas Meneghel Rodrigues | .read = test_ioport_read, |
94 | ee0cc541 | Lucas Meneghel Rodrigues | .write = test_ioport_write, |
95 | ee0cc541 | Lucas Meneghel Rodrigues | .endianness = DEVICE_LITTLE_ENDIAN, |
96 | ee0cc541 | Lucas Meneghel Rodrigues | }; |
97 | ee0cc541 | Lucas Meneghel Rodrigues | |
98 | ee0cc541 | Lucas Meneghel Rodrigues | static void test_flush_page(void *opaque, hwaddr addr, uint64_t data, |
99 | ee0cc541 | Lucas Meneghel Rodrigues | unsigned len)
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100 | ee0cc541 | Lucas Meneghel Rodrigues | { |
101 | ee0cc541 | Lucas Meneghel Rodrigues | hwaddr page = 4096;
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102 | ee0cc541 | Lucas Meneghel Rodrigues | void *a = cpu_physical_memory_map(data & ~0xffful, &page, 0); |
103 | ee0cc541 | Lucas Meneghel Rodrigues | |
104 | ee0cc541 | Lucas Meneghel Rodrigues | /* We might not be able to get the full page, only mprotect what we actually
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105 | ee0cc541 | Lucas Meneghel Rodrigues | have mapped */
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106 | 549db5c3 | Stefan Weil | #if defined(CONFIG_POSIX)
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107 | ee0cc541 | Lucas Meneghel Rodrigues | mprotect(a, page, PROT_NONE); |
108 | ee0cc541 | Lucas Meneghel Rodrigues | mprotect(a, page, PROT_READ|PROT_WRITE); |
109 | 549db5c3 | Stefan Weil | #endif
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110 | ee0cc541 | Lucas Meneghel Rodrigues | cpu_physical_memory_unmap(a, page, 0, 0); |
111 | ee0cc541 | Lucas Meneghel Rodrigues | } |
112 | ee0cc541 | Lucas Meneghel Rodrigues | |
113 | ee0cc541 | Lucas Meneghel Rodrigues | static const MemoryRegionOps test_flush_ops = { |
114 | ee0cc541 | Lucas Meneghel Rodrigues | .write = test_flush_page, |
115 | ee0cc541 | Lucas Meneghel Rodrigues | .valid.min_access_size = 4,
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116 | ee0cc541 | Lucas Meneghel Rodrigues | .valid.max_access_size = 4,
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117 | ee0cc541 | Lucas Meneghel Rodrigues | .endianness = DEVICE_LITTLE_ENDIAN, |
118 | ee0cc541 | Lucas Meneghel Rodrigues | }; |
119 | ee0cc541 | Lucas Meneghel Rodrigues | |
120 | ee0cc541 | Lucas Meneghel Rodrigues | static uint64_t test_iomem_read(void *opaque, hwaddr addr, unsigned len) |
121 | ee0cc541 | Lucas Meneghel Rodrigues | { |
122 | 00e4d0db | Gerd Hoffmann | PCTestdev *dev = opaque; |
123 | ee0cc541 | Lucas Meneghel Rodrigues | uint64_t ret = 0;
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124 | ee0cc541 | Lucas Meneghel Rodrigues | memcpy(&ret, &dev->iomem_buf[addr], len); |
125 | ee0cc541 | Lucas Meneghel Rodrigues | ret = le64_to_cpu(ret); |
126 | ee0cc541 | Lucas Meneghel Rodrigues | |
127 | ee0cc541 | Lucas Meneghel Rodrigues | return ret;
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128 | ee0cc541 | Lucas Meneghel Rodrigues | } |
129 | ee0cc541 | Lucas Meneghel Rodrigues | |
130 | ee0cc541 | Lucas Meneghel Rodrigues | static void test_iomem_write(void *opaque, hwaddr addr, uint64_t val, |
131 | ee0cc541 | Lucas Meneghel Rodrigues | unsigned len)
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132 | ee0cc541 | Lucas Meneghel Rodrigues | { |
133 | 00e4d0db | Gerd Hoffmann | PCTestdev *dev = opaque; |
134 | ee0cc541 | Lucas Meneghel Rodrigues | val = cpu_to_le64(val); |
135 | ee0cc541 | Lucas Meneghel Rodrigues | memcpy(&dev->iomem_buf[addr], &val, len); |
136 | ee0cc541 | Lucas Meneghel Rodrigues | dev->iomem_buf[addr] = val; |
137 | ee0cc541 | Lucas Meneghel Rodrigues | } |
138 | ee0cc541 | Lucas Meneghel Rodrigues | |
139 | ee0cc541 | Lucas Meneghel Rodrigues | static const MemoryRegionOps test_iomem_ops = { |
140 | ee0cc541 | Lucas Meneghel Rodrigues | .read = test_iomem_read, |
141 | ee0cc541 | Lucas Meneghel Rodrigues | .write = test_iomem_write, |
142 | ee0cc541 | Lucas Meneghel Rodrigues | .endianness = DEVICE_LITTLE_ENDIAN, |
143 | ee0cc541 | Lucas Meneghel Rodrigues | }; |
144 | ee0cc541 | Lucas Meneghel Rodrigues | |
145 | db895a1e | Andreas Färber | static void testdev_realizefn(DeviceState *d, Error **errp) |
146 | ee0cc541 | Lucas Meneghel Rodrigues | { |
147 | db895a1e | Andreas Färber | ISADevice *isa = ISA_DEVICE(d); |
148 | db895a1e | Andreas Färber | PCTestdev *dev = TESTDEV(d); |
149 | ee0cc541 | Lucas Meneghel Rodrigues | MemoryRegion *mem = isa_address_space(isa); |
150 | ee0cc541 | Lucas Meneghel Rodrigues | MemoryRegion *io = isa_address_space_io(isa); |
151 | ee0cc541 | Lucas Meneghel Rodrigues | |
152 | ee0cc541 | Lucas Meneghel Rodrigues | memory_region_init_io(&dev->ioport, &test_ioport_ops, dev, |
153 | ee0cc541 | Lucas Meneghel Rodrigues | "pc-testdev-ioport", 4); |
154 | ee0cc541 | Lucas Meneghel Rodrigues | memory_region_init_io(&dev->flush, &test_flush_ops, dev, |
155 | ee0cc541 | Lucas Meneghel Rodrigues | "pc-testdev-flush-page", 4); |
156 | ee0cc541 | Lucas Meneghel Rodrigues | memory_region_init_io(&dev->irq, &test_irq_ops, dev, |
157 | ee0cc541 | Lucas Meneghel Rodrigues | "pc-testdev-irq-line", 24); |
158 | ee0cc541 | Lucas Meneghel Rodrigues | memory_region_init_io(&dev->iomem, &test_iomem_ops, dev, |
159 | ee0cc541 | Lucas Meneghel Rodrigues | "pc-testdev-iomem", IOMEM_LEN);
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160 | ee0cc541 | Lucas Meneghel Rodrigues | |
161 | ee0cc541 | Lucas Meneghel Rodrigues | memory_region_add_subregion(io, 0xe0, &dev->ioport);
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162 | ee0cc541 | Lucas Meneghel Rodrigues | memory_region_add_subregion(io, 0xe4, &dev->flush);
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163 | ee0cc541 | Lucas Meneghel Rodrigues | memory_region_add_subregion(io, 0x2000, &dev->irq);
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164 | ee0cc541 | Lucas Meneghel Rodrigues | memory_region_add_subregion(mem, 0xff000000, &dev->iomem);
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165 | ee0cc541 | Lucas Meneghel Rodrigues | } |
166 | ee0cc541 | Lucas Meneghel Rodrigues | |
167 | ee0cc541 | Lucas Meneghel Rodrigues | static void testdev_class_init(ObjectClass *klass, void *data) |
168 | ee0cc541 | Lucas Meneghel Rodrigues | { |
169 | db895a1e | Andreas Färber | DeviceClass *dc = DEVICE_CLASS(klass); |
170 | ee0cc541 | Lucas Meneghel Rodrigues | |
171 | db895a1e | Andreas Färber | dc->realize = testdev_realizefn; |
172 | ee0cc541 | Lucas Meneghel Rodrigues | } |
173 | ee0cc541 | Lucas Meneghel Rodrigues | |
174 | 8c43a6f0 | Andreas Färber | static const TypeInfo testdev_info = { |
175 | ee0cc541 | Lucas Meneghel Rodrigues | .name = TYPE_TESTDEV, |
176 | ee0cc541 | Lucas Meneghel Rodrigues | .parent = TYPE_ISA_DEVICE, |
177 | 00e4d0db | Gerd Hoffmann | .instance_size = sizeof(PCTestdev),
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178 | ee0cc541 | Lucas Meneghel Rodrigues | .class_init = testdev_class_init, |
179 | ee0cc541 | Lucas Meneghel Rodrigues | }; |
180 | ee0cc541 | Lucas Meneghel Rodrigues | |
181 | ee0cc541 | Lucas Meneghel Rodrigues | static void testdev_register_types(void) |
182 | ee0cc541 | Lucas Meneghel Rodrigues | { |
183 | ee0cc541 | Lucas Meneghel Rodrigues | type_register_static(&testdev_info); |
184 | ee0cc541 | Lucas Meneghel Rodrigues | } |
185 | ee0cc541 | Lucas Meneghel Rodrigues | |
186 | ee0cc541 | Lucas Meneghel Rodrigues | type_init(testdev_register_types) |