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1 | 093bc2cd | Avi Kivity | /*
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2 | 093bc2cd | Avi Kivity | * Physical memory management
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3 | 093bc2cd | Avi Kivity | *
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4 | 093bc2cd | Avi Kivity | * Copyright 2011 Red Hat, Inc. and/or its affiliates
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5 | 093bc2cd | Avi Kivity | *
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6 | 093bc2cd | Avi Kivity | * Authors:
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7 | 093bc2cd | Avi Kivity | * Avi Kivity <avi@redhat.com>
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8 | 093bc2cd | Avi Kivity | *
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9 | 093bc2cd | Avi Kivity | * This work is licensed under the terms of the GNU GPL, version 2. See
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10 | 093bc2cd | Avi Kivity | * the COPYING file in the top-level directory.
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11 | 093bc2cd | Avi Kivity | *
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12 | 093bc2cd | Avi Kivity | */
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13 | 093bc2cd | Avi Kivity | |
14 | 093bc2cd | Avi Kivity | #include "memory.h" |
15 | 1c0ffa58 | Avi Kivity | #include "exec-memory.h" |
16 | 658b2224 | Avi Kivity | #include "ioport.h" |
17 | 093bc2cd | Avi Kivity | #include <assert.h> |
18 | 093bc2cd | Avi Kivity | |
19 | 093bc2cd | Avi Kivity | typedef struct AddrRange AddrRange; |
20 | 093bc2cd | Avi Kivity | |
21 | 093bc2cd | Avi Kivity | struct AddrRange {
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22 | 093bc2cd | Avi Kivity | uint64_t start; |
23 | 093bc2cd | Avi Kivity | uint64_t size; |
24 | 093bc2cd | Avi Kivity | }; |
25 | 093bc2cd | Avi Kivity | |
26 | 093bc2cd | Avi Kivity | static AddrRange addrrange_make(uint64_t start, uint64_t size)
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27 | 093bc2cd | Avi Kivity | { |
28 | 093bc2cd | Avi Kivity | return (AddrRange) { start, size };
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29 | 093bc2cd | Avi Kivity | } |
30 | 093bc2cd | Avi Kivity | |
31 | 093bc2cd | Avi Kivity | static bool addrrange_equal(AddrRange r1, AddrRange r2) |
32 | 093bc2cd | Avi Kivity | { |
33 | 093bc2cd | Avi Kivity | return r1.start == r2.start && r1.size == r2.size;
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34 | 093bc2cd | Avi Kivity | } |
35 | 093bc2cd | Avi Kivity | |
36 | 093bc2cd | Avi Kivity | static uint64_t addrrange_end(AddrRange r)
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37 | 093bc2cd | Avi Kivity | { |
38 | 093bc2cd | Avi Kivity | return r.start + r.size;
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39 | 093bc2cd | Avi Kivity | } |
40 | 093bc2cd | Avi Kivity | |
41 | 093bc2cd | Avi Kivity | static AddrRange addrrange_shift(AddrRange range, int64_t delta)
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42 | 093bc2cd | Avi Kivity | { |
43 | 093bc2cd | Avi Kivity | range.start += delta; |
44 | 093bc2cd | Avi Kivity | return range;
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45 | 093bc2cd | Avi Kivity | } |
46 | 093bc2cd | Avi Kivity | |
47 | 093bc2cd | Avi Kivity | static bool addrrange_intersects(AddrRange r1, AddrRange r2) |
48 | 093bc2cd | Avi Kivity | { |
49 | 093bc2cd | Avi Kivity | return (r1.start >= r2.start && r1.start < r2.start + r2.size)
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50 | 093bc2cd | Avi Kivity | || (r2.start >= r1.start && r2.start < r1.start + r1.size); |
51 | 093bc2cd | Avi Kivity | } |
52 | 093bc2cd | Avi Kivity | |
53 | 093bc2cd | Avi Kivity | static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
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54 | 093bc2cd | Avi Kivity | { |
55 | 093bc2cd | Avi Kivity | uint64_t start = MAX(r1.start, r2.start); |
56 | 093bc2cd | Avi Kivity | /* off-by-one arithmetic to prevent overflow */
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57 | 093bc2cd | Avi Kivity | uint64_t end = MIN(addrrange_end(r1) - 1, addrrange_end(r2) - 1); |
58 | 093bc2cd | Avi Kivity | return addrrange_make(start, end - start + 1); |
59 | 093bc2cd | Avi Kivity | } |
60 | 093bc2cd | Avi Kivity | |
61 | 093bc2cd | Avi Kivity | struct CoalescedMemoryRange {
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62 | 093bc2cd | Avi Kivity | AddrRange addr; |
63 | 093bc2cd | Avi Kivity | QTAILQ_ENTRY(CoalescedMemoryRange) link; |
64 | 093bc2cd | Avi Kivity | }; |
65 | 093bc2cd | Avi Kivity | |
66 | 093bc2cd | Avi Kivity | typedef struct FlatRange FlatRange; |
67 | 093bc2cd | Avi Kivity | typedef struct FlatView FlatView; |
68 | 093bc2cd | Avi Kivity | |
69 | 093bc2cd | Avi Kivity | /* Range of memory in the global map. Addresses are absolute. */
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70 | 093bc2cd | Avi Kivity | struct FlatRange {
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71 | 093bc2cd | Avi Kivity | MemoryRegion *mr; |
72 | 093bc2cd | Avi Kivity | target_phys_addr_t offset_in_region; |
73 | 093bc2cd | Avi Kivity | AddrRange addr; |
74 | 5a583347 | Avi Kivity | uint8_t dirty_log_mask; |
75 | 093bc2cd | Avi Kivity | }; |
76 | 093bc2cd | Avi Kivity | |
77 | 093bc2cd | Avi Kivity | /* Flattened global view of current active memory hierarchy. Kept in sorted
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78 | 093bc2cd | Avi Kivity | * order.
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79 | 093bc2cd | Avi Kivity | */
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80 | 093bc2cd | Avi Kivity | struct FlatView {
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81 | 093bc2cd | Avi Kivity | FlatRange *ranges; |
82 | 093bc2cd | Avi Kivity | unsigned nr;
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83 | 093bc2cd | Avi Kivity | unsigned nr_allocated;
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84 | 093bc2cd | Avi Kivity | }; |
85 | 093bc2cd | Avi Kivity | |
86 | cc31e6e7 | Avi Kivity | typedef struct AddressSpace AddressSpace; |
87 | cc31e6e7 | Avi Kivity | typedef struct AddressSpaceOps AddressSpaceOps; |
88 | cc31e6e7 | Avi Kivity | |
89 | cc31e6e7 | Avi Kivity | /* A system address space - I/O, memory, etc. */
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90 | cc31e6e7 | Avi Kivity | struct AddressSpace {
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91 | cc31e6e7 | Avi Kivity | const AddressSpaceOps *ops;
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92 | cc31e6e7 | Avi Kivity | MemoryRegion *root; |
93 | cc31e6e7 | Avi Kivity | FlatView current_map; |
94 | cc31e6e7 | Avi Kivity | }; |
95 | cc31e6e7 | Avi Kivity | |
96 | cc31e6e7 | Avi Kivity | struct AddressSpaceOps {
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97 | cc31e6e7 | Avi Kivity | void (*range_add)(AddressSpace *as, FlatRange *fr);
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98 | cc31e6e7 | Avi Kivity | void (*range_del)(AddressSpace *as, FlatRange *fr);
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99 | cc31e6e7 | Avi Kivity | void (*log_start)(AddressSpace *as, FlatRange *fr);
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100 | cc31e6e7 | Avi Kivity | void (*log_stop)(AddressSpace *as, FlatRange *fr);
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101 | cc31e6e7 | Avi Kivity | }; |
102 | cc31e6e7 | Avi Kivity | |
103 | 093bc2cd | Avi Kivity | #define FOR_EACH_FLAT_RANGE(var, view) \
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104 | 093bc2cd | Avi Kivity | for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
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105 | 093bc2cd | Avi Kivity | |
106 | 093bc2cd | Avi Kivity | static bool flatrange_equal(FlatRange *a, FlatRange *b) |
107 | 093bc2cd | Avi Kivity | { |
108 | 093bc2cd | Avi Kivity | return a->mr == b->mr
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109 | 093bc2cd | Avi Kivity | && addrrange_equal(a->addr, b->addr) |
110 | 093bc2cd | Avi Kivity | && a->offset_in_region == b->offset_in_region; |
111 | 093bc2cd | Avi Kivity | } |
112 | 093bc2cd | Avi Kivity | |
113 | 093bc2cd | Avi Kivity | static void flatview_init(FlatView *view) |
114 | 093bc2cd | Avi Kivity | { |
115 | 093bc2cd | Avi Kivity | view->ranges = NULL;
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116 | 093bc2cd | Avi Kivity | view->nr = 0;
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117 | 093bc2cd | Avi Kivity | view->nr_allocated = 0;
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118 | 093bc2cd | Avi Kivity | } |
119 | 093bc2cd | Avi Kivity | |
120 | 093bc2cd | Avi Kivity | /* Insert a range into a given position. Caller is responsible for maintaining
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121 | 093bc2cd | Avi Kivity | * sorting order.
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122 | 093bc2cd | Avi Kivity | */
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123 | 093bc2cd | Avi Kivity | static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range) |
124 | 093bc2cd | Avi Kivity | { |
125 | 093bc2cd | Avi Kivity | if (view->nr == view->nr_allocated) {
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126 | 093bc2cd | Avi Kivity | view->nr_allocated = MAX(2 * view->nr, 10); |
127 | 093bc2cd | Avi Kivity | view->ranges = qemu_realloc(view->ranges, |
128 | 093bc2cd | Avi Kivity | view->nr_allocated * sizeof(*view->ranges));
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129 | 093bc2cd | Avi Kivity | } |
130 | 093bc2cd | Avi Kivity | memmove(view->ranges + pos + 1, view->ranges + pos,
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131 | 093bc2cd | Avi Kivity | (view->nr - pos) * sizeof(FlatRange));
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132 | 093bc2cd | Avi Kivity | view->ranges[pos] = *range; |
133 | 093bc2cd | Avi Kivity | ++view->nr; |
134 | 093bc2cd | Avi Kivity | } |
135 | 093bc2cd | Avi Kivity | |
136 | 093bc2cd | Avi Kivity | static void flatview_destroy(FlatView *view) |
137 | 093bc2cd | Avi Kivity | { |
138 | 093bc2cd | Avi Kivity | qemu_free(view->ranges); |
139 | 093bc2cd | Avi Kivity | } |
140 | 093bc2cd | Avi Kivity | |
141 | 3d8e6bf9 | Avi Kivity | static bool can_merge(FlatRange *r1, FlatRange *r2) |
142 | 3d8e6bf9 | Avi Kivity | { |
143 | 3d8e6bf9 | Avi Kivity | return addrrange_end(r1->addr) == r2->addr.start
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144 | 3d8e6bf9 | Avi Kivity | && r1->mr == r2->mr |
145 | 3d8e6bf9 | Avi Kivity | && r1->offset_in_region + r1->addr.size == r2->offset_in_region |
146 | 3d8e6bf9 | Avi Kivity | && r1->dirty_log_mask == r2->dirty_log_mask; |
147 | 3d8e6bf9 | Avi Kivity | } |
148 | 3d8e6bf9 | Avi Kivity | |
149 | 3d8e6bf9 | Avi Kivity | /* Attempt to simplify a view by merging ajacent ranges */
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150 | 3d8e6bf9 | Avi Kivity | static void flatview_simplify(FlatView *view) |
151 | 3d8e6bf9 | Avi Kivity | { |
152 | 3d8e6bf9 | Avi Kivity | unsigned i, j;
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153 | 3d8e6bf9 | Avi Kivity | |
154 | 3d8e6bf9 | Avi Kivity | i = 0;
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155 | 3d8e6bf9 | Avi Kivity | while (i < view->nr) {
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156 | 3d8e6bf9 | Avi Kivity | j = i + 1;
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157 | 3d8e6bf9 | Avi Kivity | while (j < view->nr
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158 | 3d8e6bf9 | Avi Kivity | && can_merge(&view->ranges[j-1], &view->ranges[j])) {
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159 | 3d8e6bf9 | Avi Kivity | view->ranges[i].addr.size += view->ranges[j].addr.size; |
160 | 3d8e6bf9 | Avi Kivity | ++j; |
161 | 3d8e6bf9 | Avi Kivity | } |
162 | 3d8e6bf9 | Avi Kivity | ++i; |
163 | 3d8e6bf9 | Avi Kivity | memmove(&view->ranges[i], &view->ranges[j], |
164 | 3d8e6bf9 | Avi Kivity | (view->nr - j) * sizeof(view->ranges[j]));
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165 | 3d8e6bf9 | Avi Kivity | view->nr -= j - i; |
166 | 3d8e6bf9 | Avi Kivity | } |
167 | 3d8e6bf9 | Avi Kivity | } |
168 | 3d8e6bf9 | Avi Kivity | |
169 | 16ef61c9 | Avi Kivity | static void memory_region_prepare_ram_addr(MemoryRegion *mr); |
170 | 16ef61c9 | Avi Kivity | |
171 | cc31e6e7 | Avi Kivity | static void as_memory_range_add(AddressSpace *as, FlatRange *fr) |
172 | cc31e6e7 | Avi Kivity | { |
173 | cc31e6e7 | Avi Kivity | ram_addr_t phys_offset, region_offset; |
174 | cc31e6e7 | Avi Kivity | |
175 | 16ef61c9 | Avi Kivity | memory_region_prepare_ram_addr(fr->mr); |
176 | 16ef61c9 | Avi Kivity | |
177 | cc31e6e7 | Avi Kivity | phys_offset = fr->mr->ram_addr; |
178 | cc31e6e7 | Avi Kivity | region_offset = fr->offset_in_region; |
179 | cc31e6e7 | Avi Kivity | /* cpu_register_physical_memory_log() wants region_offset for
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180 | cc31e6e7 | Avi Kivity | * mmio, but prefers offseting phys_offset for RAM. Humour it.
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181 | cc31e6e7 | Avi Kivity | */
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182 | cc31e6e7 | Avi Kivity | if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM) {
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183 | cc31e6e7 | Avi Kivity | phys_offset += region_offset; |
184 | cc31e6e7 | Avi Kivity | region_offset = 0;
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185 | cc31e6e7 | Avi Kivity | } |
186 | cc31e6e7 | Avi Kivity | |
187 | cc31e6e7 | Avi Kivity | cpu_register_physical_memory_log(fr->addr.start, |
188 | cc31e6e7 | Avi Kivity | fr->addr.size, |
189 | cc31e6e7 | Avi Kivity | phys_offset, |
190 | cc31e6e7 | Avi Kivity | region_offset, |
191 | cc31e6e7 | Avi Kivity | fr->dirty_log_mask); |
192 | cc31e6e7 | Avi Kivity | } |
193 | cc31e6e7 | Avi Kivity | |
194 | cc31e6e7 | Avi Kivity | static void as_memory_range_del(AddressSpace *as, FlatRange *fr) |
195 | cc31e6e7 | Avi Kivity | { |
196 | cc31e6e7 | Avi Kivity | cpu_register_physical_memory(fr->addr.start, fr->addr.size, |
197 | cc31e6e7 | Avi Kivity | IO_MEM_UNASSIGNED); |
198 | cc31e6e7 | Avi Kivity | } |
199 | cc31e6e7 | Avi Kivity | |
200 | cc31e6e7 | Avi Kivity | static void as_memory_log_start(AddressSpace *as, FlatRange *fr) |
201 | cc31e6e7 | Avi Kivity | { |
202 | cc31e6e7 | Avi Kivity | cpu_physical_log_start(fr->addr.start, fr->addr.size); |
203 | cc31e6e7 | Avi Kivity | } |
204 | cc31e6e7 | Avi Kivity | |
205 | cc31e6e7 | Avi Kivity | static void as_memory_log_stop(AddressSpace *as, FlatRange *fr) |
206 | cc31e6e7 | Avi Kivity | { |
207 | cc31e6e7 | Avi Kivity | cpu_physical_log_stop(fr->addr.start, fr->addr.size); |
208 | cc31e6e7 | Avi Kivity | } |
209 | cc31e6e7 | Avi Kivity | |
210 | cc31e6e7 | Avi Kivity | static const AddressSpaceOps address_space_ops_memory = { |
211 | cc31e6e7 | Avi Kivity | .range_add = as_memory_range_add, |
212 | cc31e6e7 | Avi Kivity | .range_del = as_memory_range_del, |
213 | cc31e6e7 | Avi Kivity | .log_start = as_memory_log_start, |
214 | cc31e6e7 | Avi Kivity | .log_stop = as_memory_log_stop, |
215 | cc31e6e7 | Avi Kivity | }; |
216 | cc31e6e7 | Avi Kivity | |
217 | cc31e6e7 | Avi Kivity | static AddressSpace address_space_memory = {
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218 | cc31e6e7 | Avi Kivity | .ops = &address_space_ops_memory, |
219 | cc31e6e7 | Avi Kivity | }; |
220 | cc31e6e7 | Avi Kivity | |
221 | 658b2224 | Avi Kivity | static void memory_region_iorange_read(IORange *iorange, |
222 | 658b2224 | Avi Kivity | uint64_t offset, |
223 | 658b2224 | Avi Kivity | unsigned width,
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224 | 658b2224 | Avi Kivity | uint64_t *data) |
225 | 658b2224 | Avi Kivity | { |
226 | 658b2224 | Avi Kivity | MemoryRegion *mr = container_of(iorange, MemoryRegion, iorange); |
227 | 658b2224 | Avi Kivity | |
228 | 658b2224 | Avi Kivity | *data = mr->ops->read(mr->opaque, offset, width); |
229 | 658b2224 | Avi Kivity | } |
230 | 658b2224 | Avi Kivity | |
231 | 658b2224 | Avi Kivity | static void memory_region_iorange_write(IORange *iorange, |
232 | 658b2224 | Avi Kivity | uint64_t offset, |
233 | 658b2224 | Avi Kivity | unsigned width,
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234 | 658b2224 | Avi Kivity | uint64_t data) |
235 | 658b2224 | Avi Kivity | { |
236 | 658b2224 | Avi Kivity | MemoryRegion *mr = container_of(iorange, MemoryRegion, iorange); |
237 | 658b2224 | Avi Kivity | |
238 | 658b2224 | Avi Kivity | mr->ops->write(mr->opaque, offset, data, width); |
239 | 658b2224 | Avi Kivity | } |
240 | 658b2224 | Avi Kivity | |
241 | 658b2224 | Avi Kivity | static const IORangeOps memory_region_iorange_ops = { |
242 | 658b2224 | Avi Kivity | .read = memory_region_iorange_read, |
243 | 658b2224 | Avi Kivity | .write = memory_region_iorange_write, |
244 | 658b2224 | Avi Kivity | }; |
245 | 658b2224 | Avi Kivity | |
246 | 658b2224 | Avi Kivity | static void as_io_range_add(AddressSpace *as, FlatRange *fr) |
247 | 658b2224 | Avi Kivity | { |
248 | 658b2224 | Avi Kivity | iorange_init(&fr->mr->iorange, &memory_region_iorange_ops, |
249 | 658b2224 | Avi Kivity | fr->addr.start,fr->addr.size); |
250 | 658b2224 | Avi Kivity | ioport_register(&fr->mr->iorange); |
251 | 658b2224 | Avi Kivity | } |
252 | 658b2224 | Avi Kivity | |
253 | 658b2224 | Avi Kivity | static void as_io_range_del(AddressSpace *as, FlatRange *fr) |
254 | 658b2224 | Avi Kivity | { |
255 | 658b2224 | Avi Kivity | isa_unassign_ioport(fr->addr.start, fr->addr.size); |
256 | 658b2224 | Avi Kivity | } |
257 | 658b2224 | Avi Kivity | |
258 | 658b2224 | Avi Kivity | static const AddressSpaceOps address_space_ops_io = { |
259 | 658b2224 | Avi Kivity | .range_add = as_io_range_add, |
260 | 658b2224 | Avi Kivity | .range_del = as_io_range_del, |
261 | 658b2224 | Avi Kivity | }; |
262 | 658b2224 | Avi Kivity | |
263 | 658b2224 | Avi Kivity | static AddressSpace address_space_io = {
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264 | 658b2224 | Avi Kivity | .ops = &address_space_ops_io, |
265 | 658b2224 | Avi Kivity | }; |
266 | 658b2224 | Avi Kivity | |
267 | 093bc2cd | Avi Kivity | /* Render a memory region into the global view. Ranges in @view obscure
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268 | 093bc2cd | Avi Kivity | * ranges in @mr.
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269 | 093bc2cd | Avi Kivity | */
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270 | 093bc2cd | Avi Kivity | static void render_memory_region(FlatView *view, |
271 | 093bc2cd | Avi Kivity | MemoryRegion *mr, |
272 | 093bc2cd | Avi Kivity | target_phys_addr_t base, |
273 | 093bc2cd | Avi Kivity | AddrRange clip) |
274 | 093bc2cd | Avi Kivity | { |
275 | 093bc2cd | Avi Kivity | MemoryRegion *subregion; |
276 | 093bc2cd | Avi Kivity | unsigned i;
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277 | 093bc2cd | Avi Kivity | target_phys_addr_t offset_in_region; |
278 | 093bc2cd | Avi Kivity | uint64_t remain; |
279 | 093bc2cd | Avi Kivity | uint64_t now; |
280 | 093bc2cd | Avi Kivity | FlatRange fr; |
281 | 093bc2cd | Avi Kivity | AddrRange tmp; |
282 | 093bc2cd | Avi Kivity | |
283 | 093bc2cd | Avi Kivity | base += mr->addr; |
284 | 093bc2cd | Avi Kivity | |
285 | 093bc2cd | Avi Kivity | tmp = addrrange_make(base, mr->size); |
286 | 093bc2cd | Avi Kivity | |
287 | 093bc2cd | Avi Kivity | if (!addrrange_intersects(tmp, clip)) {
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288 | 093bc2cd | Avi Kivity | return;
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289 | 093bc2cd | Avi Kivity | } |
290 | 093bc2cd | Avi Kivity | |
291 | 093bc2cd | Avi Kivity | clip = addrrange_intersection(tmp, clip); |
292 | 093bc2cd | Avi Kivity | |
293 | 093bc2cd | Avi Kivity | if (mr->alias) {
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294 | 093bc2cd | Avi Kivity | base -= mr->alias->addr; |
295 | 093bc2cd | Avi Kivity | base -= mr->alias_offset; |
296 | 093bc2cd | Avi Kivity | render_memory_region(view, mr->alias, base, clip); |
297 | 093bc2cd | Avi Kivity | return;
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298 | 093bc2cd | Avi Kivity | } |
299 | 093bc2cd | Avi Kivity | |
300 | 093bc2cd | Avi Kivity | /* Render subregions in priority order. */
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301 | 093bc2cd | Avi Kivity | QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) { |
302 | 093bc2cd | Avi Kivity | render_memory_region(view, subregion, base, clip); |
303 | 093bc2cd | Avi Kivity | } |
304 | 093bc2cd | Avi Kivity | |
305 | 14a3c10a | Avi Kivity | if (!mr->terminates) {
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306 | 093bc2cd | Avi Kivity | return;
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307 | 093bc2cd | Avi Kivity | } |
308 | 093bc2cd | Avi Kivity | |
309 | 093bc2cd | Avi Kivity | offset_in_region = clip.start - base; |
310 | 093bc2cd | Avi Kivity | base = clip.start; |
311 | 093bc2cd | Avi Kivity | remain = clip.size; |
312 | 093bc2cd | Avi Kivity | |
313 | 093bc2cd | Avi Kivity | /* Render the region itself into any gaps left by the current view. */
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314 | 093bc2cd | Avi Kivity | for (i = 0; i < view->nr && remain; ++i) { |
315 | 093bc2cd | Avi Kivity | if (base >= addrrange_end(view->ranges[i].addr)) {
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316 | 093bc2cd | Avi Kivity | continue;
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317 | 093bc2cd | Avi Kivity | } |
318 | 093bc2cd | Avi Kivity | if (base < view->ranges[i].addr.start) {
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319 | 093bc2cd | Avi Kivity | now = MIN(remain, view->ranges[i].addr.start - base); |
320 | 093bc2cd | Avi Kivity | fr.mr = mr; |
321 | 093bc2cd | Avi Kivity | fr.offset_in_region = offset_in_region; |
322 | 093bc2cd | Avi Kivity | fr.addr = addrrange_make(base, now); |
323 | 5a583347 | Avi Kivity | fr.dirty_log_mask = mr->dirty_log_mask; |
324 | 093bc2cd | Avi Kivity | flatview_insert(view, i, &fr); |
325 | 093bc2cd | Avi Kivity | ++i; |
326 | 093bc2cd | Avi Kivity | base += now; |
327 | 093bc2cd | Avi Kivity | offset_in_region += now; |
328 | 093bc2cd | Avi Kivity | remain -= now; |
329 | 093bc2cd | Avi Kivity | } |
330 | 093bc2cd | Avi Kivity | if (base == view->ranges[i].addr.start) {
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331 | 093bc2cd | Avi Kivity | now = MIN(remain, view->ranges[i].addr.size); |
332 | 093bc2cd | Avi Kivity | base += now; |
333 | 093bc2cd | Avi Kivity | offset_in_region += now; |
334 | 093bc2cd | Avi Kivity | remain -= now; |
335 | 093bc2cd | Avi Kivity | } |
336 | 093bc2cd | Avi Kivity | } |
337 | 093bc2cd | Avi Kivity | if (remain) {
|
338 | 093bc2cd | Avi Kivity | fr.mr = mr; |
339 | 093bc2cd | Avi Kivity | fr.offset_in_region = offset_in_region; |
340 | 093bc2cd | Avi Kivity | fr.addr = addrrange_make(base, remain); |
341 | 5a583347 | Avi Kivity | fr.dirty_log_mask = mr->dirty_log_mask; |
342 | 093bc2cd | Avi Kivity | flatview_insert(view, i, &fr); |
343 | 093bc2cd | Avi Kivity | } |
344 | 093bc2cd | Avi Kivity | } |
345 | 093bc2cd | Avi Kivity | |
346 | 093bc2cd | Avi Kivity | /* Render a memory topology into a list of disjoint absolute ranges. */
|
347 | 093bc2cd | Avi Kivity | static FlatView generate_memory_topology(MemoryRegion *mr)
|
348 | 093bc2cd | Avi Kivity | { |
349 | 093bc2cd | Avi Kivity | FlatView view; |
350 | 093bc2cd | Avi Kivity | |
351 | 093bc2cd | Avi Kivity | flatview_init(&view); |
352 | 093bc2cd | Avi Kivity | |
353 | 093bc2cd | Avi Kivity | render_memory_region(&view, mr, 0, addrrange_make(0, UINT64_MAX)); |
354 | 3d8e6bf9 | Avi Kivity | flatview_simplify(&view); |
355 | 093bc2cd | Avi Kivity | |
356 | 093bc2cd | Avi Kivity | return view;
|
357 | 093bc2cd | Avi Kivity | } |
358 | 093bc2cd | Avi Kivity | |
359 | cc31e6e7 | Avi Kivity | static void address_space_update_topology(AddressSpace *as) |
360 | 093bc2cd | Avi Kivity | { |
361 | cc31e6e7 | Avi Kivity | FlatView old_view = as->current_map; |
362 | cc31e6e7 | Avi Kivity | FlatView new_view = generate_memory_topology(as->root); |
363 | 093bc2cd | Avi Kivity | unsigned iold, inew;
|
364 | 093bc2cd | Avi Kivity | FlatRange *frold, *frnew; |
365 | 093bc2cd | Avi Kivity | |
366 | 093bc2cd | Avi Kivity | /* Generate a symmetric difference of the old and new memory maps.
|
367 | 093bc2cd | Avi Kivity | * Kill ranges in the old map, and instantiate ranges in the new map.
|
368 | 093bc2cd | Avi Kivity | */
|
369 | 093bc2cd | Avi Kivity | iold = inew = 0;
|
370 | 093bc2cd | Avi Kivity | while (iold < old_view.nr || inew < new_view.nr) {
|
371 | 093bc2cd | Avi Kivity | if (iold < old_view.nr) {
|
372 | 093bc2cd | Avi Kivity | frold = &old_view.ranges[iold]; |
373 | 093bc2cd | Avi Kivity | } else {
|
374 | 093bc2cd | Avi Kivity | frold = NULL;
|
375 | 093bc2cd | Avi Kivity | } |
376 | 093bc2cd | Avi Kivity | if (inew < new_view.nr) {
|
377 | 093bc2cd | Avi Kivity | frnew = &new_view.ranges[inew]; |
378 | 093bc2cd | Avi Kivity | } else {
|
379 | 093bc2cd | Avi Kivity | frnew = NULL;
|
380 | 093bc2cd | Avi Kivity | } |
381 | 093bc2cd | Avi Kivity | |
382 | 093bc2cd | Avi Kivity | if (frold
|
383 | 093bc2cd | Avi Kivity | && (!frnew |
384 | 093bc2cd | Avi Kivity | || frold->addr.start < frnew->addr.start |
385 | 093bc2cd | Avi Kivity | || (frold->addr.start == frnew->addr.start |
386 | 093bc2cd | Avi Kivity | && !flatrange_equal(frold, frnew)))) { |
387 | 093bc2cd | Avi Kivity | /* In old, but (not in new, or in new but attributes changed). */
|
388 | 093bc2cd | Avi Kivity | |
389 | cc31e6e7 | Avi Kivity | as->ops->range_del(as, frold); |
390 | 093bc2cd | Avi Kivity | ++iold; |
391 | 093bc2cd | Avi Kivity | } else if (frold && frnew && flatrange_equal(frold, frnew)) { |
392 | 093bc2cd | Avi Kivity | /* In both (logging may have changed) */
|
393 | 093bc2cd | Avi Kivity | |
394 | 5a583347 | Avi Kivity | if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
|
395 | cc31e6e7 | Avi Kivity | as->ops->log_stop(as, frnew); |
396 | 5a583347 | Avi Kivity | } else if (frnew->dirty_log_mask && !frold->dirty_log_mask) { |
397 | cc31e6e7 | Avi Kivity | as->ops->log_start(as, frnew); |
398 | 5a583347 | Avi Kivity | } |
399 | 5a583347 | Avi Kivity | |
400 | 093bc2cd | Avi Kivity | ++iold; |
401 | 093bc2cd | Avi Kivity | ++inew; |
402 | 093bc2cd | Avi Kivity | } else {
|
403 | 093bc2cd | Avi Kivity | /* In new */
|
404 | 093bc2cd | Avi Kivity | |
405 | cc31e6e7 | Avi Kivity | as->ops->range_add(as, frnew); |
406 | 093bc2cd | Avi Kivity | ++inew; |
407 | 093bc2cd | Avi Kivity | } |
408 | 093bc2cd | Avi Kivity | } |
409 | cc31e6e7 | Avi Kivity | as->current_map = new_view; |
410 | 093bc2cd | Avi Kivity | flatview_destroy(&old_view); |
411 | 093bc2cd | Avi Kivity | } |
412 | 093bc2cd | Avi Kivity | |
413 | cc31e6e7 | Avi Kivity | static void memory_region_update_topology(void) |
414 | cc31e6e7 | Avi Kivity | { |
415 | 658b2224 | Avi Kivity | if (address_space_memory.root) {
|
416 | 658b2224 | Avi Kivity | address_space_update_topology(&address_space_memory); |
417 | 658b2224 | Avi Kivity | } |
418 | 658b2224 | Avi Kivity | if (address_space_io.root) {
|
419 | 658b2224 | Avi Kivity | address_space_update_topology(&address_space_io); |
420 | 658b2224 | Avi Kivity | } |
421 | cc31e6e7 | Avi Kivity | } |
422 | cc31e6e7 | Avi Kivity | |
423 | 093bc2cd | Avi Kivity | void memory_region_init(MemoryRegion *mr,
|
424 | 093bc2cd | Avi Kivity | const char *name, |
425 | 093bc2cd | Avi Kivity | uint64_t size) |
426 | 093bc2cd | Avi Kivity | { |
427 | 093bc2cd | Avi Kivity | mr->ops = NULL;
|
428 | 093bc2cd | Avi Kivity | mr->parent = NULL;
|
429 | 093bc2cd | Avi Kivity | mr->size = size; |
430 | 093bc2cd | Avi Kivity | mr->addr = 0;
|
431 | 093bc2cd | Avi Kivity | mr->offset = 0;
|
432 | 14a3c10a | Avi Kivity | mr->terminates = false;
|
433 | 093bc2cd | Avi Kivity | mr->priority = 0;
|
434 | 093bc2cd | Avi Kivity | mr->may_overlap = false;
|
435 | 093bc2cd | Avi Kivity | mr->alias = NULL;
|
436 | 093bc2cd | Avi Kivity | QTAILQ_INIT(&mr->subregions); |
437 | 093bc2cd | Avi Kivity | memset(&mr->subregions_link, 0, sizeof mr->subregions_link); |
438 | 093bc2cd | Avi Kivity | QTAILQ_INIT(&mr->coalesced); |
439 | 093bc2cd | Avi Kivity | mr->name = qemu_strdup(name); |
440 | 5a583347 | Avi Kivity | mr->dirty_log_mask = 0;
|
441 | 093bc2cd | Avi Kivity | } |
442 | 093bc2cd | Avi Kivity | |
443 | 093bc2cd | Avi Kivity | static bool memory_region_access_valid(MemoryRegion *mr, |
444 | 093bc2cd | Avi Kivity | target_phys_addr_t addr, |
445 | 093bc2cd | Avi Kivity | unsigned size)
|
446 | 093bc2cd | Avi Kivity | { |
447 | 093bc2cd | Avi Kivity | if (!mr->ops->valid.unaligned && (addr & (size - 1))) { |
448 | 093bc2cd | Avi Kivity | return false; |
449 | 093bc2cd | Avi Kivity | } |
450 | 093bc2cd | Avi Kivity | |
451 | 093bc2cd | Avi Kivity | /* Treat zero as compatibility all valid */
|
452 | 093bc2cd | Avi Kivity | if (!mr->ops->valid.max_access_size) {
|
453 | 093bc2cd | Avi Kivity | return true; |
454 | 093bc2cd | Avi Kivity | } |
455 | 093bc2cd | Avi Kivity | |
456 | 093bc2cd | Avi Kivity | if (size > mr->ops->valid.max_access_size
|
457 | 093bc2cd | Avi Kivity | || size < mr->ops->valid.min_access_size) { |
458 | 093bc2cd | Avi Kivity | return false; |
459 | 093bc2cd | Avi Kivity | } |
460 | 093bc2cd | Avi Kivity | return true; |
461 | 093bc2cd | Avi Kivity | } |
462 | 093bc2cd | Avi Kivity | |
463 | 093bc2cd | Avi Kivity | static uint32_t memory_region_read_thunk_n(void *_mr, |
464 | 093bc2cd | Avi Kivity | target_phys_addr_t addr, |
465 | 093bc2cd | Avi Kivity | unsigned size)
|
466 | 093bc2cd | Avi Kivity | { |
467 | 093bc2cd | Avi Kivity | MemoryRegion *mr = _mr; |
468 | 093bc2cd | Avi Kivity | unsigned access_size, access_size_min, access_size_max;
|
469 | 093bc2cd | Avi Kivity | uint64_t access_mask; |
470 | 093bc2cd | Avi Kivity | uint32_t data = 0, tmp;
|
471 | 093bc2cd | Avi Kivity | unsigned i;
|
472 | 093bc2cd | Avi Kivity | |
473 | 093bc2cd | Avi Kivity | if (!memory_region_access_valid(mr, addr, size)) {
|
474 | 093bc2cd | Avi Kivity | return -1U; /* FIXME: better signalling */ |
475 | 093bc2cd | Avi Kivity | } |
476 | 093bc2cd | Avi Kivity | |
477 | 093bc2cd | Avi Kivity | /* FIXME: support unaligned access */
|
478 | 093bc2cd | Avi Kivity | |
479 | 093bc2cd | Avi Kivity | access_size_min = mr->ops->impl.min_access_size; |
480 | 093bc2cd | Avi Kivity | if (!access_size_min) {
|
481 | 093bc2cd | Avi Kivity | access_size_min = 1;
|
482 | 093bc2cd | Avi Kivity | } |
483 | 093bc2cd | Avi Kivity | access_size_max = mr->ops->impl.max_access_size; |
484 | 093bc2cd | Avi Kivity | if (!access_size_max) {
|
485 | 093bc2cd | Avi Kivity | access_size_max = 4;
|
486 | 093bc2cd | Avi Kivity | } |
487 | 093bc2cd | Avi Kivity | access_size = MAX(MIN(size, access_size_max), access_size_min); |
488 | 093bc2cd | Avi Kivity | access_mask = -1ULL >> (64 - access_size * 8); |
489 | 093bc2cd | Avi Kivity | addr += mr->offset; |
490 | 093bc2cd | Avi Kivity | for (i = 0; i < size; i += access_size) { |
491 | 093bc2cd | Avi Kivity | /* FIXME: big-endian support */
|
492 | 093bc2cd | Avi Kivity | tmp = mr->ops->read(mr->opaque, addr + i, access_size); |
493 | 093bc2cd | Avi Kivity | data |= (tmp & access_mask) << (i * 8);
|
494 | 093bc2cd | Avi Kivity | } |
495 | 093bc2cd | Avi Kivity | |
496 | 093bc2cd | Avi Kivity | return data;
|
497 | 093bc2cd | Avi Kivity | } |
498 | 093bc2cd | Avi Kivity | |
499 | 093bc2cd | Avi Kivity | static void memory_region_write_thunk_n(void *_mr, |
500 | 093bc2cd | Avi Kivity | target_phys_addr_t addr, |
501 | 093bc2cd | Avi Kivity | unsigned size,
|
502 | 093bc2cd | Avi Kivity | uint64_t data) |
503 | 093bc2cd | Avi Kivity | { |
504 | 093bc2cd | Avi Kivity | MemoryRegion *mr = _mr; |
505 | 093bc2cd | Avi Kivity | unsigned access_size, access_size_min, access_size_max;
|
506 | 093bc2cd | Avi Kivity | uint64_t access_mask; |
507 | 093bc2cd | Avi Kivity | unsigned i;
|
508 | 093bc2cd | Avi Kivity | |
509 | 093bc2cd | Avi Kivity | if (!memory_region_access_valid(mr, addr, size)) {
|
510 | 093bc2cd | Avi Kivity | return; /* FIXME: better signalling */ |
511 | 093bc2cd | Avi Kivity | } |
512 | 093bc2cd | Avi Kivity | |
513 | 093bc2cd | Avi Kivity | /* FIXME: support unaligned access */
|
514 | 093bc2cd | Avi Kivity | |
515 | 093bc2cd | Avi Kivity | access_size_min = mr->ops->impl.min_access_size; |
516 | 093bc2cd | Avi Kivity | if (!access_size_min) {
|
517 | 093bc2cd | Avi Kivity | access_size_min = 1;
|
518 | 093bc2cd | Avi Kivity | } |
519 | 093bc2cd | Avi Kivity | access_size_max = mr->ops->impl.max_access_size; |
520 | 093bc2cd | Avi Kivity | if (!access_size_max) {
|
521 | 093bc2cd | Avi Kivity | access_size_max = 4;
|
522 | 093bc2cd | Avi Kivity | } |
523 | 093bc2cd | Avi Kivity | access_size = MAX(MIN(size, access_size_max), access_size_min); |
524 | 093bc2cd | Avi Kivity | access_mask = -1ULL >> (64 - access_size * 8); |
525 | 093bc2cd | Avi Kivity | addr += mr->offset; |
526 | 093bc2cd | Avi Kivity | for (i = 0; i < size; i += access_size) { |
527 | 093bc2cd | Avi Kivity | /* FIXME: big-endian support */
|
528 | 093bc2cd | Avi Kivity | mr->ops->write(mr->opaque, addr + i, (data >> (i * 8)) & access_mask,
|
529 | 093bc2cd | Avi Kivity | access_size); |
530 | 093bc2cd | Avi Kivity | } |
531 | 093bc2cd | Avi Kivity | } |
532 | 093bc2cd | Avi Kivity | |
533 | 093bc2cd | Avi Kivity | static uint32_t memory_region_read_thunk_b(void *mr, target_phys_addr_t addr) |
534 | 093bc2cd | Avi Kivity | { |
535 | 093bc2cd | Avi Kivity | return memory_region_read_thunk_n(mr, addr, 1); |
536 | 093bc2cd | Avi Kivity | } |
537 | 093bc2cd | Avi Kivity | |
538 | 093bc2cd | Avi Kivity | static uint32_t memory_region_read_thunk_w(void *mr, target_phys_addr_t addr) |
539 | 093bc2cd | Avi Kivity | { |
540 | 093bc2cd | Avi Kivity | return memory_region_read_thunk_n(mr, addr, 2); |
541 | 093bc2cd | Avi Kivity | } |
542 | 093bc2cd | Avi Kivity | |
543 | 093bc2cd | Avi Kivity | static uint32_t memory_region_read_thunk_l(void *mr, target_phys_addr_t addr) |
544 | 093bc2cd | Avi Kivity | { |
545 | 093bc2cd | Avi Kivity | return memory_region_read_thunk_n(mr, addr, 4); |
546 | 093bc2cd | Avi Kivity | } |
547 | 093bc2cd | Avi Kivity | |
548 | 093bc2cd | Avi Kivity | static void memory_region_write_thunk_b(void *mr, target_phys_addr_t addr, |
549 | 093bc2cd | Avi Kivity | uint32_t data) |
550 | 093bc2cd | Avi Kivity | { |
551 | 093bc2cd | Avi Kivity | memory_region_write_thunk_n(mr, addr, 1, data);
|
552 | 093bc2cd | Avi Kivity | } |
553 | 093bc2cd | Avi Kivity | |
554 | 093bc2cd | Avi Kivity | static void memory_region_write_thunk_w(void *mr, target_phys_addr_t addr, |
555 | 093bc2cd | Avi Kivity | uint32_t data) |
556 | 093bc2cd | Avi Kivity | { |
557 | 093bc2cd | Avi Kivity | memory_region_write_thunk_n(mr, addr, 2, data);
|
558 | 093bc2cd | Avi Kivity | } |
559 | 093bc2cd | Avi Kivity | |
560 | 093bc2cd | Avi Kivity | static void memory_region_write_thunk_l(void *mr, target_phys_addr_t addr, |
561 | 093bc2cd | Avi Kivity | uint32_t data) |
562 | 093bc2cd | Avi Kivity | { |
563 | 093bc2cd | Avi Kivity | memory_region_write_thunk_n(mr, addr, 4, data);
|
564 | 093bc2cd | Avi Kivity | } |
565 | 093bc2cd | Avi Kivity | |
566 | 093bc2cd | Avi Kivity | static CPUReadMemoryFunc * const memory_region_read_thunk[] = { |
567 | 093bc2cd | Avi Kivity | memory_region_read_thunk_b, |
568 | 093bc2cd | Avi Kivity | memory_region_read_thunk_w, |
569 | 093bc2cd | Avi Kivity | memory_region_read_thunk_l, |
570 | 093bc2cd | Avi Kivity | }; |
571 | 093bc2cd | Avi Kivity | |
572 | 093bc2cd | Avi Kivity | static CPUWriteMemoryFunc * const memory_region_write_thunk[] = { |
573 | 093bc2cd | Avi Kivity | memory_region_write_thunk_b, |
574 | 093bc2cd | Avi Kivity | memory_region_write_thunk_w, |
575 | 093bc2cd | Avi Kivity | memory_region_write_thunk_l, |
576 | 093bc2cd | Avi Kivity | }; |
577 | 093bc2cd | Avi Kivity | |
578 | 16ef61c9 | Avi Kivity | static void memory_region_prepare_ram_addr(MemoryRegion *mr) |
579 | 16ef61c9 | Avi Kivity | { |
580 | 16ef61c9 | Avi Kivity | if (mr->backend_registered) {
|
581 | 16ef61c9 | Avi Kivity | return;
|
582 | 16ef61c9 | Avi Kivity | } |
583 | 16ef61c9 | Avi Kivity | |
584 | 16ef61c9 | Avi Kivity | mr->ram_addr = cpu_register_io_memory(memory_region_read_thunk, |
585 | 16ef61c9 | Avi Kivity | memory_region_write_thunk, |
586 | 16ef61c9 | Avi Kivity | mr, |
587 | 16ef61c9 | Avi Kivity | mr->ops->endianness); |
588 | 16ef61c9 | Avi Kivity | mr->backend_registered = true;
|
589 | 16ef61c9 | Avi Kivity | } |
590 | 16ef61c9 | Avi Kivity | |
591 | 093bc2cd | Avi Kivity | void memory_region_init_io(MemoryRegion *mr,
|
592 | 093bc2cd | Avi Kivity | const MemoryRegionOps *ops,
|
593 | 093bc2cd | Avi Kivity | void *opaque,
|
594 | 093bc2cd | Avi Kivity | const char *name, |
595 | 093bc2cd | Avi Kivity | uint64_t size) |
596 | 093bc2cd | Avi Kivity | { |
597 | 093bc2cd | Avi Kivity | memory_region_init(mr, name, size); |
598 | 093bc2cd | Avi Kivity | mr->ops = ops; |
599 | 093bc2cd | Avi Kivity | mr->opaque = opaque; |
600 | 14a3c10a | Avi Kivity | mr->terminates = true;
|
601 | 16ef61c9 | Avi Kivity | mr->backend_registered = false;
|
602 | 093bc2cd | Avi Kivity | } |
603 | 093bc2cd | Avi Kivity | |
604 | 093bc2cd | Avi Kivity | void memory_region_init_ram(MemoryRegion *mr,
|
605 | 093bc2cd | Avi Kivity | DeviceState *dev, |
606 | 093bc2cd | Avi Kivity | const char *name, |
607 | 093bc2cd | Avi Kivity | uint64_t size) |
608 | 093bc2cd | Avi Kivity | { |
609 | 093bc2cd | Avi Kivity | memory_region_init(mr, name, size); |
610 | 14a3c10a | Avi Kivity | mr->terminates = true;
|
611 | 093bc2cd | Avi Kivity | mr->ram_addr = qemu_ram_alloc(dev, name, size); |
612 | 16ef61c9 | Avi Kivity | mr->backend_registered = true;
|
613 | 093bc2cd | Avi Kivity | } |
614 | 093bc2cd | Avi Kivity | |
615 | 093bc2cd | Avi Kivity | void memory_region_init_ram_ptr(MemoryRegion *mr,
|
616 | 093bc2cd | Avi Kivity | DeviceState *dev, |
617 | 093bc2cd | Avi Kivity | const char *name, |
618 | 093bc2cd | Avi Kivity | uint64_t size, |
619 | 093bc2cd | Avi Kivity | void *ptr)
|
620 | 093bc2cd | Avi Kivity | { |
621 | 093bc2cd | Avi Kivity | memory_region_init(mr, name, size); |
622 | 14a3c10a | Avi Kivity | mr->terminates = true;
|
623 | 093bc2cd | Avi Kivity | mr->ram_addr = qemu_ram_alloc_from_ptr(dev, name, size, ptr); |
624 | 16ef61c9 | Avi Kivity | mr->backend_registered = true;
|
625 | 093bc2cd | Avi Kivity | } |
626 | 093bc2cd | Avi Kivity | |
627 | 093bc2cd | Avi Kivity | void memory_region_init_alias(MemoryRegion *mr,
|
628 | 093bc2cd | Avi Kivity | const char *name, |
629 | 093bc2cd | Avi Kivity | MemoryRegion *orig, |
630 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
631 | 093bc2cd | Avi Kivity | uint64_t size) |
632 | 093bc2cd | Avi Kivity | { |
633 | 093bc2cd | Avi Kivity | memory_region_init(mr, name, size); |
634 | 093bc2cd | Avi Kivity | mr->alias = orig; |
635 | 093bc2cd | Avi Kivity | mr->alias_offset = offset; |
636 | 093bc2cd | Avi Kivity | } |
637 | 093bc2cd | Avi Kivity | |
638 | 093bc2cd | Avi Kivity | void memory_region_destroy(MemoryRegion *mr)
|
639 | 093bc2cd | Avi Kivity | { |
640 | 093bc2cd | Avi Kivity | assert(QTAILQ_EMPTY(&mr->subregions)); |
641 | 093bc2cd | Avi Kivity | memory_region_clear_coalescing(mr); |
642 | 093bc2cd | Avi Kivity | qemu_free((char *)mr->name);
|
643 | 093bc2cd | Avi Kivity | } |
644 | 093bc2cd | Avi Kivity | |
645 | 093bc2cd | Avi Kivity | uint64_t memory_region_size(MemoryRegion *mr) |
646 | 093bc2cd | Avi Kivity | { |
647 | 093bc2cd | Avi Kivity | return mr->size;
|
648 | 093bc2cd | Avi Kivity | } |
649 | 093bc2cd | Avi Kivity | |
650 | 093bc2cd | Avi Kivity | void memory_region_set_offset(MemoryRegion *mr, target_phys_addr_t offset)
|
651 | 093bc2cd | Avi Kivity | { |
652 | 093bc2cd | Avi Kivity | mr->offset = offset; |
653 | 093bc2cd | Avi Kivity | } |
654 | 093bc2cd | Avi Kivity | |
655 | 093bc2cd | Avi Kivity | void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) |
656 | 093bc2cd | Avi Kivity | { |
657 | 5a583347 | Avi Kivity | uint8_t mask = 1 << client;
|
658 | 5a583347 | Avi Kivity | |
659 | 5a583347 | Avi Kivity | mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask); |
660 | 5a583347 | Avi Kivity | memory_region_update_topology(); |
661 | 093bc2cd | Avi Kivity | } |
662 | 093bc2cd | Avi Kivity | |
663 | 093bc2cd | Avi Kivity | bool memory_region_get_dirty(MemoryRegion *mr, target_phys_addr_t addr,
|
664 | 093bc2cd | Avi Kivity | unsigned client)
|
665 | 093bc2cd | Avi Kivity | { |
666 | 14a3c10a | Avi Kivity | assert(mr->terminates); |
667 | 5a583347 | Avi Kivity | return cpu_physical_memory_get_dirty(mr->ram_addr + addr, 1 << client); |
668 | 093bc2cd | Avi Kivity | } |
669 | 093bc2cd | Avi Kivity | |
670 | 093bc2cd | Avi Kivity | void memory_region_set_dirty(MemoryRegion *mr, target_phys_addr_t addr)
|
671 | 093bc2cd | Avi Kivity | { |
672 | 14a3c10a | Avi Kivity | assert(mr->terminates); |
673 | 5a583347 | Avi Kivity | return cpu_physical_memory_set_dirty(mr->ram_addr + addr);
|
674 | 093bc2cd | Avi Kivity | } |
675 | 093bc2cd | Avi Kivity | |
676 | 093bc2cd | Avi Kivity | void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
|
677 | 093bc2cd | Avi Kivity | { |
678 | 5a583347 | Avi Kivity | FlatRange *fr; |
679 | 5a583347 | Avi Kivity | |
680 | cc31e6e7 | Avi Kivity | FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) { |
681 | 5a583347 | Avi Kivity | if (fr->mr == mr) {
|
682 | 5a583347 | Avi Kivity | cpu_physical_sync_dirty_bitmap(fr->addr.start, |
683 | 5a583347 | Avi Kivity | fr->addr.start + fr->addr.size); |
684 | 5a583347 | Avi Kivity | } |
685 | 5a583347 | Avi Kivity | } |
686 | 093bc2cd | Avi Kivity | } |
687 | 093bc2cd | Avi Kivity | |
688 | 093bc2cd | Avi Kivity | void memory_region_set_readonly(MemoryRegion *mr, bool readonly) |
689 | 093bc2cd | Avi Kivity | { |
690 | 093bc2cd | Avi Kivity | /* FIXME */
|
691 | 093bc2cd | Avi Kivity | } |
692 | 093bc2cd | Avi Kivity | |
693 | 093bc2cd | Avi Kivity | void memory_region_reset_dirty(MemoryRegion *mr, target_phys_addr_t addr,
|
694 | 093bc2cd | Avi Kivity | target_phys_addr_t size, unsigned client)
|
695 | 093bc2cd | Avi Kivity | { |
696 | 14a3c10a | Avi Kivity | assert(mr->terminates); |
697 | 5a583347 | Avi Kivity | cpu_physical_memory_reset_dirty(mr->ram_addr + addr, |
698 | 5a583347 | Avi Kivity | mr->ram_addr + addr + size, |
699 | 5a583347 | Avi Kivity | 1 << client);
|
700 | 093bc2cd | Avi Kivity | } |
701 | 093bc2cd | Avi Kivity | |
702 | 093bc2cd | Avi Kivity | void *memory_region_get_ram_ptr(MemoryRegion *mr)
|
703 | 093bc2cd | Avi Kivity | { |
704 | 093bc2cd | Avi Kivity | if (mr->alias) {
|
705 | 093bc2cd | Avi Kivity | return memory_region_get_ram_ptr(mr->alias) + mr->alias_offset;
|
706 | 093bc2cd | Avi Kivity | } |
707 | 093bc2cd | Avi Kivity | |
708 | 14a3c10a | Avi Kivity | assert(mr->terminates); |
709 | 093bc2cd | Avi Kivity | |
710 | 093bc2cd | Avi Kivity | return qemu_get_ram_ptr(mr->ram_addr);
|
711 | 093bc2cd | Avi Kivity | } |
712 | 093bc2cd | Avi Kivity | |
713 | 093bc2cd | Avi Kivity | static void memory_region_update_coalesced_range(MemoryRegion *mr) |
714 | 093bc2cd | Avi Kivity | { |
715 | 093bc2cd | Avi Kivity | FlatRange *fr; |
716 | 093bc2cd | Avi Kivity | CoalescedMemoryRange *cmr; |
717 | 093bc2cd | Avi Kivity | AddrRange tmp; |
718 | 093bc2cd | Avi Kivity | |
719 | cc31e6e7 | Avi Kivity | FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) { |
720 | 093bc2cd | Avi Kivity | if (fr->mr == mr) {
|
721 | 093bc2cd | Avi Kivity | qemu_unregister_coalesced_mmio(fr->addr.start, fr->addr.size); |
722 | 093bc2cd | Avi Kivity | QTAILQ_FOREACH(cmr, &mr->coalesced, link) { |
723 | 093bc2cd | Avi Kivity | tmp = addrrange_shift(cmr->addr, |
724 | 093bc2cd | Avi Kivity | fr->addr.start - fr->offset_in_region); |
725 | 093bc2cd | Avi Kivity | if (!addrrange_intersects(tmp, fr->addr)) {
|
726 | 093bc2cd | Avi Kivity | continue;
|
727 | 093bc2cd | Avi Kivity | } |
728 | 093bc2cd | Avi Kivity | tmp = addrrange_intersection(tmp, fr->addr); |
729 | 093bc2cd | Avi Kivity | qemu_register_coalesced_mmio(tmp.start, tmp.size); |
730 | 093bc2cd | Avi Kivity | } |
731 | 093bc2cd | Avi Kivity | } |
732 | 093bc2cd | Avi Kivity | } |
733 | 093bc2cd | Avi Kivity | } |
734 | 093bc2cd | Avi Kivity | |
735 | 093bc2cd | Avi Kivity | void memory_region_set_coalescing(MemoryRegion *mr)
|
736 | 093bc2cd | Avi Kivity | { |
737 | 093bc2cd | Avi Kivity | memory_region_clear_coalescing(mr); |
738 | 093bc2cd | Avi Kivity | memory_region_add_coalescing(mr, 0, mr->size);
|
739 | 093bc2cd | Avi Kivity | } |
740 | 093bc2cd | Avi Kivity | |
741 | 093bc2cd | Avi Kivity | void memory_region_add_coalescing(MemoryRegion *mr,
|
742 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
743 | 093bc2cd | Avi Kivity | uint64_t size) |
744 | 093bc2cd | Avi Kivity | { |
745 | 093bc2cd | Avi Kivity | CoalescedMemoryRange *cmr = qemu_malloc(sizeof(*cmr));
|
746 | 093bc2cd | Avi Kivity | |
747 | 093bc2cd | Avi Kivity | cmr->addr = addrrange_make(offset, size); |
748 | 093bc2cd | Avi Kivity | QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link); |
749 | 093bc2cd | Avi Kivity | memory_region_update_coalesced_range(mr); |
750 | 093bc2cd | Avi Kivity | } |
751 | 093bc2cd | Avi Kivity | |
752 | 093bc2cd | Avi Kivity | void memory_region_clear_coalescing(MemoryRegion *mr)
|
753 | 093bc2cd | Avi Kivity | { |
754 | 093bc2cd | Avi Kivity | CoalescedMemoryRange *cmr; |
755 | 093bc2cd | Avi Kivity | |
756 | 093bc2cd | Avi Kivity | while (!QTAILQ_EMPTY(&mr->coalesced)) {
|
757 | 093bc2cd | Avi Kivity | cmr = QTAILQ_FIRST(&mr->coalesced); |
758 | 093bc2cd | Avi Kivity | QTAILQ_REMOVE(&mr->coalesced, cmr, link); |
759 | 093bc2cd | Avi Kivity | qemu_free(cmr); |
760 | 093bc2cd | Avi Kivity | } |
761 | 093bc2cd | Avi Kivity | memory_region_update_coalesced_range(mr); |
762 | 093bc2cd | Avi Kivity | } |
763 | 093bc2cd | Avi Kivity | |
764 | 093bc2cd | Avi Kivity | static void memory_region_add_subregion_common(MemoryRegion *mr, |
765 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
766 | 093bc2cd | Avi Kivity | MemoryRegion *subregion) |
767 | 093bc2cd | Avi Kivity | { |
768 | 093bc2cd | Avi Kivity | MemoryRegion *other; |
769 | 093bc2cd | Avi Kivity | |
770 | 093bc2cd | Avi Kivity | assert(!subregion->parent); |
771 | 093bc2cd | Avi Kivity | subregion->parent = mr; |
772 | 093bc2cd | Avi Kivity | subregion->addr = offset; |
773 | 093bc2cd | Avi Kivity | QTAILQ_FOREACH(other, &mr->subregions, subregions_link) { |
774 | 093bc2cd | Avi Kivity | if (subregion->may_overlap || other->may_overlap) {
|
775 | 093bc2cd | Avi Kivity | continue;
|
776 | 093bc2cd | Avi Kivity | } |
777 | 093bc2cd | Avi Kivity | if (offset >= other->offset + other->size
|
778 | 093bc2cd | Avi Kivity | || offset + subregion->size <= other->offset) { |
779 | 093bc2cd | Avi Kivity | continue;
|
780 | 093bc2cd | Avi Kivity | } |
781 | 093bc2cd | Avi Kivity | printf("warning: subregion collision %llx/%llx vs %llx/%llx\n",
|
782 | 093bc2cd | Avi Kivity | (unsigned long long)offset, |
783 | 093bc2cd | Avi Kivity | (unsigned long long)subregion->size, |
784 | 093bc2cd | Avi Kivity | (unsigned long long)other->offset, |
785 | 093bc2cd | Avi Kivity | (unsigned long long)other->size); |
786 | 093bc2cd | Avi Kivity | } |
787 | 093bc2cd | Avi Kivity | QTAILQ_FOREACH(other, &mr->subregions, subregions_link) { |
788 | 093bc2cd | Avi Kivity | if (subregion->priority >= other->priority) {
|
789 | 093bc2cd | Avi Kivity | QTAILQ_INSERT_BEFORE(other, subregion, subregions_link); |
790 | 093bc2cd | Avi Kivity | goto done;
|
791 | 093bc2cd | Avi Kivity | } |
792 | 093bc2cd | Avi Kivity | } |
793 | 093bc2cd | Avi Kivity | QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link); |
794 | 093bc2cd | Avi Kivity | done:
|
795 | 093bc2cd | Avi Kivity | memory_region_update_topology(); |
796 | 093bc2cd | Avi Kivity | } |
797 | 093bc2cd | Avi Kivity | |
798 | 093bc2cd | Avi Kivity | |
799 | 093bc2cd | Avi Kivity | void memory_region_add_subregion(MemoryRegion *mr,
|
800 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
801 | 093bc2cd | Avi Kivity | MemoryRegion *subregion) |
802 | 093bc2cd | Avi Kivity | { |
803 | 093bc2cd | Avi Kivity | subregion->may_overlap = false;
|
804 | 093bc2cd | Avi Kivity | subregion->priority = 0;
|
805 | 093bc2cd | Avi Kivity | memory_region_add_subregion_common(mr, offset, subregion); |
806 | 093bc2cd | Avi Kivity | } |
807 | 093bc2cd | Avi Kivity | |
808 | 093bc2cd | Avi Kivity | void memory_region_add_subregion_overlap(MemoryRegion *mr,
|
809 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
810 | 093bc2cd | Avi Kivity | MemoryRegion *subregion, |
811 | 093bc2cd | Avi Kivity | unsigned priority)
|
812 | 093bc2cd | Avi Kivity | { |
813 | 093bc2cd | Avi Kivity | subregion->may_overlap = true;
|
814 | 093bc2cd | Avi Kivity | subregion->priority = priority; |
815 | 093bc2cd | Avi Kivity | memory_region_add_subregion_common(mr, offset, subregion); |
816 | 093bc2cd | Avi Kivity | } |
817 | 093bc2cd | Avi Kivity | |
818 | 093bc2cd | Avi Kivity | void memory_region_del_subregion(MemoryRegion *mr,
|
819 | 093bc2cd | Avi Kivity | MemoryRegion *subregion) |
820 | 093bc2cd | Avi Kivity | { |
821 | 093bc2cd | Avi Kivity | assert(subregion->parent == mr); |
822 | 093bc2cd | Avi Kivity | subregion->parent = NULL;
|
823 | 093bc2cd | Avi Kivity | QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link); |
824 | 093bc2cd | Avi Kivity | memory_region_update_topology(); |
825 | 093bc2cd | Avi Kivity | } |
826 | 1c0ffa58 | Avi Kivity | |
827 | 1c0ffa58 | Avi Kivity | void set_system_memory_map(MemoryRegion *mr)
|
828 | 1c0ffa58 | Avi Kivity | { |
829 | cc31e6e7 | Avi Kivity | address_space_memory.root = mr; |
830 | 1c0ffa58 | Avi Kivity | memory_region_update_topology(); |
831 | 1c0ffa58 | Avi Kivity | } |
832 | 658b2224 | Avi Kivity | |
833 | 658b2224 | Avi Kivity | void set_system_io_map(MemoryRegion *mr)
|
834 | 658b2224 | Avi Kivity | { |
835 | 658b2224 | Avi Kivity | address_space_io.root = mr; |
836 | 658b2224 | Avi Kivity | memory_region_update_topology(); |
837 | 658b2224 | Avi Kivity | } |