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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 | 74901c3b | Avi Kivity | #include "bitops.h" |
18 | 3e9d69e7 | Avi Kivity | #include "kvm.h" |
19 | 093bc2cd | Avi Kivity | #include <assert.h> |
20 | 093bc2cd | Avi Kivity | |
21 | 4ef4db86 | Avi Kivity | unsigned memory_region_transaction_depth = 0; |
22 | 4ef4db86 | Avi Kivity | |
23 | 093bc2cd | Avi Kivity | typedef struct AddrRange AddrRange; |
24 | 093bc2cd | Avi Kivity | |
25 | 8417cebf | Avi Kivity | /*
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26 | 8417cebf | Avi Kivity | * Note using signed integers limits us to physical addresses at most
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27 | 8417cebf | Avi Kivity | * 63 bits wide. They are needed for negative offsetting in aliases
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28 | 8417cebf | Avi Kivity | * (large MemoryRegion::alias_offset).
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29 | 8417cebf | Avi Kivity | */
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30 | 093bc2cd | Avi Kivity | struct AddrRange {
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31 | 8417cebf | Avi Kivity | int64_t start; |
32 | 8417cebf | Avi Kivity | int64_t size; |
33 | 093bc2cd | Avi Kivity | }; |
34 | 093bc2cd | Avi Kivity | |
35 | 8417cebf | Avi Kivity | static AddrRange addrrange_make(int64_t start, int64_t size)
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36 | 093bc2cd | Avi Kivity | { |
37 | 093bc2cd | Avi Kivity | return (AddrRange) { start, size };
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38 | 093bc2cd | Avi Kivity | } |
39 | 093bc2cd | Avi Kivity | |
40 | 093bc2cd | Avi Kivity | static bool addrrange_equal(AddrRange r1, AddrRange r2) |
41 | 093bc2cd | Avi Kivity | { |
42 | 093bc2cd | Avi Kivity | return r1.start == r2.start && r1.size == r2.size;
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43 | 093bc2cd | Avi Kivity | } |
44 | 093bc2cd | Avi Kivity | |
45 | 8417cebf | Avi Kivity | static int64_t addrrange_end(AddrRange r)
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46 | 093bc2cd | Avi Kivity | { |
47 | 093bc2cd | Avi Kivity | return r.start + r.size;
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48 | 093bc2cd | Avi Kivity | } |
49 | 093bc2cd | Avi Kivity | |
50 | 093bc2cd | Avi Kivity | static AddrRange addrrange_shift(AddrRange range, int64_t delta)
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51 | 093bc2cd | Avi Kivity | { |
52 | 093bc2cd | Avi Kivity | range.start += delta; |
53 | 093bc2cd | Avi Kivity | return range;
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54 | 093bc2cd | Avi Kivity | } |
55 | 093bc2cd | Avi Kivity | |
56 | 093bc2cd | Avi Kivity | static bool addrrange_intersects(AddrRange r1, AddrRange r2) |
57 | 093bc2cd | Avi Kivity | { |
58 | 093bc2cd | Avi Kivity | return (r1.start >= r2.start && r1.start < r2.start + r2.size)
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59 | 093bc2cd | Avi Kivity | || (r2.start >= r1.start && r2.start < r1.start + r1.size); |
60 | 093bc2cd | Avi Kivity | } |
61 | 093bc2cd | Avi Kivity | |
62 | 093bc2cd | Avi Kivity | static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
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63 | 093bc2cd | Avi Kivity | { |
64 | 8417cebf | Avi Kivity | int64_t start = MAX(r1.start, r2.start); |
65 | 093bc2cd | Avi Kivity | /* off-by-one arithmetic to prevent overflow */
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66 | 8417cebf | Avi Kivity | int64_t end = MIN(addrrange_end(r1) - 1, addrrange_end(r2) - 1); |
67 | 093bc2cd | Avi Kivity | return addrrange_make(start, end - start + 1); |
68 | 093bc2cd | Avi Kivity | } |
69 | 093bc2cd | Avi Kivity | |
70 | 093bc2cd | Avi Kivity | struct CoalescedMemoryRange {
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71 | 093bc2cd | Avi Kivity | AddrRange addr; |
72 | 093bc2cd | Avi Kivity | QTAILQ_ENTRY(CoalescedMemoryRange) link; |
73 | 093bc2cd | Avi Kivity | }; |
74 | 093bc2cd | Avi Kivity | |
75 | 3e9d69e7 | Avi Kivity | struct MemoryRegionIoeventfd {
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76 | 3e9d69e7 | Avi Kivity | AddrRange addr; |
77 | 3e9d69e7 | Avi Kivity | bool match_data;
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78 | 3e9d69e7 | Avi Kivity | uint64_t data; |
79 | 3e9d69e7 | Avi Kivity | int fd;
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80 | 3e9d69e7 | Avi Kivity | }; |
81 | 3e9d69e7 | Avi Kivity | |
82 | 3e9d69e7 | Avi Kivity | static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a, |
83 | 3e9d69e7 | Avi Kivity | MemoryRegionIoeventfd b) |
84 | 3e9d69e7 | Avi Kivity | { |
85 | 3e9d69e7 | Avi Kivity | if (a.addr.start < b.addr.start) {
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86 | 3e9d69e7 | Avi Kivity | return true; |
87 | 3e9d69e7 | Avi Kivity | } else if (a.addr.start > b.addr.start) { |
88 | 3e9d69e7 | Avi Kivity | return false; |
89 | 3e9d69e7 | Avi Kivity | } else if (a.addr.size < b.addr.size) { |
90 | 3e9d69e7 | Avi Kivity | return true; |
91 | 3e9d69e7 | Avi Kivity | } else if (a.addr.size > b.addr.size) { |
92 | 3e9d69e7 | Avi Kivity | return false; |
93 | 3e9d69e7 | Avi Kivity | } else if (a.match_data < b.match_data) { |
94 | 3e9d69e7 | Avi Kivity | return true; |
95 | 3e9d69e7 | Avi Kivity | } else if (a.match_data > b.match_data) { |
96 | 3e9d69e7 | Avi Kivity | return false; |
97 | 3e9d69e7 | Avi Kivity | } else if (a.match_data) { |
98 | 3e9d69e7 | Avi Kivity | if (a.data < b.data) {
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99 | 3e9d69e7 | Avi Kivity | return true; |
100 | 3e9d69e7 | Avi Kivity | } else if (a.data > b.data) { |
101 | 3e9d69e7 | Avi Kivity | return false; |
102 | 3e9d69e7 | Avi Kivity | } |
103 | 3e9d69e7 | Avi Kivity | } |
104 | 3e9d69e7 | Avi Kivity | if (a.fd < b.fd) {
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105 | 3e9d69e7 | Avi Kivity | return true; |
106 | 3e9d69e7 | Avi Kivity | } else if (a.fd > b.fd) { |
107 | 3e9d69e7 | Avi Kivity | return false; |
108 | 3e9d69e7 | Avi Kivity | } |
109 | 3e9d69e7 | Avi Kivity | return false; |
110 | 3e9d69e7 | Avi Kivity | } |
111 | 3e9d69e7 | Avi Kivity | |
112 | 3e9d69e7 | Avi Kivity | static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a, |
113 | 3e9d69e7 | Avi Kivity | MemoryRegionIoeventfd b) |
114 | 3e9d69e7 | Avi Kivity | { |
115 | 3e9d69e7 | Avi Kivity | return !memory_region_ioeventfd_before(a, b)
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116 | 3e9d69e7 | Avi Kivity | && !memory_region_ioeventfd_before(b, a); |
117 | 3e9d69e7 | Avi Kivity | } |
118 | 3e9d69e7 | Avi Kivity | |
119 | 093bc2cd | Avi Kivity | typedef struct FlatRange FlatRange; |
120 | 093bc2cd | Avi Kivity | typedef struct FlatView FlatView; |
121 | 093bc2cd | Avi Kivity | |
122 | 093bc2cd | Avi Kivity | /* Range of memory in the global map. Addresses are absolute. */
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123 | 093bc2cd | Avi Kivity | struct FlatRange {
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124 | 093bc2cd | Avi Kivity | MemoryRegion *mr; |
125 | 093bc2cd | Avi Kivity | target_phys_addr_t offset_in_region; |
126 | 093bc2cd | Avi Kivity | AddrRange addr; |
127 | 5a583347 | Avi Kivity | uint8_t dirty_log_mask; |
128 | 093bc2cd | Avi Kivity | }; |
129 | 093bc2cd | Avi Kivity | |
130 | 093bc2cd | Avi Kivity | /* Flattened global view of current active memory hierarchy. Kept in sorted
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131 | 093bc2cd | Avi Kivity | * order.
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132 | 093bc2cd | Avi Kivity | */
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133 | 093bc2cd | Avi Kivity | struct FlatView {
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134 | 093bc2cd | Avi Kivity | FlatRange *ranges; |
135 | 093bc2cd | Avi Kivity | unsigned nr;
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136 | 093bc2cd | Avi Kivity | unsigned nr_allocated;
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137 | 093bc2cd | Avi Kivity | }; |
138 | 093bc2cd | Avi Kivity | |
139 | cc31e6e7 | Avi Kivity | typedef struct AddressSpace AddressSpace; |
140 | cc31e6e7 | Avi Kivity | typedef struct AddressSpaceOps AddressSpaceOps; |
141 | cc31e6e7 | Avi Kivity | |
142 | cc31e6e7 | Avi Kivity | /* A system address space - I/O, memory, etc. */
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143 | cc31e6e7 | Avi Kivity | struct AddressSpace {
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144 | cc31e6e7 | Avi Kivity | const AddressSpaceOps *ops;
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145 | cc31e6e7 | Avi Kivity | MemoryRegion *root; |
146 | cc31e6e7 | Avi Kivity | FlatView current_map; |
147 | 3e9d69e7 | Avi Kivity | int ioeventfd_nb;
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148 | 3e9d69e7 | Avi Kivity | MemoryRegionIoeventfd *ioeventfds; |
149 | cc31e6e7 | Avi Kivity | }; |
150 | cc31e6e7 | Avi Kivity | |
151 | cc31e6e7 | Avi Kivity | struct AddressSpaceOps {
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152 | cc31e6e7 | Avi Kivity | void (*range_add)(AddressSpace *as, FlatRange *fr);
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153 | cc31e6e7 | Avi Kivity | void (*range_del)(AddressSpace *as, FlatRange *fr);
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154 | cc31e6e7 | Avi Kivity | void (*log_start)(AddressSpace *as, FlatRange *fr);
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155 | cc31e6e7 | Avi Kivity | void (*log_stop)(AddressSpace *as, FlatRange *fr);
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156 | 3e9d69e7 | Avi Kivity | void (*ioeventfd_add)(AddressSpace *as, MemoryRegionIoeventfd *fd);
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157 | 3e9d69e7 | Avi Kivity | void (*ioeventfd_del)(AddressSpace *as, MemoryRegionIoeventfd *fd);
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158 | cc31e6e7 | Avi Kivity | }; |
159 | cc31e6e7 | Avi Kivity | |
160 | 093bc2cd | Avi Kivity | #define FOR_EACH_FLAT_RANGE(var, view) \
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161 | 093bc2cd | Avi Kivity | for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
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162 | 093bc2cd | Avi Kivity | |
163 | 093bc2cd | Avi Kivity | static bool flatrange_equal(FlatRange *a, FlatRange *b) |
164 | 093bc2cd | Avi Kivity | { |
165 | 093bc2cd | Avi Kivity | return a->mr == b->mr
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166 | 093bc2cd | Avi Kivity | && addrrange_equal(a->addr, b->addr) |
167 | 093bc2cd | Avi Kivity | && a->offset_in_region == b->offset_in_region; |
168 | 093bc2cd | Avi Kivity | } |
169 | 093bc2cd | Avi Kivity | |
170 | 093bc2cd | Avi Kivity | static void flatview_init(FlatView *view) |
171 | 093bc2cd | Avi Kivity | { |
172 | 093bc2cd | Avi Kivity | view->ranges = NULL;
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173 | 093bc2cd | Avi Kivity | view->nr = 0;
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174 | 093bc2cd | Avi Kivity | view->nr_allocated = 0;
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175 | 093bc2cd | Avi Kivity | } |
176 | 093bc2cd | Avi Kivity | |
177 | 093bc2cd | Avi Kivity | /* Insert a range into a given position. Caller is responsible for maintaining
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178 | 093bc2cd | Avi Kivity | * sorting order.
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179 | 093bc2cd | Avi Kivity | */
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180 | 093bc2cd | Avi Kivity | static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range) |
181 | 093bc2cd | Avi Kivity | { |
182 | 093bc2cd | Avi Kivity | if (view->nr == view->nr_allocated) {
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183 | 093bc2cd | Avi Kivity | view->nr_allocated = MAX(2 * view->nr, 10); |
184 | 093bc2cd | Avi Kivity | view->ranges = qemu_realloc(view->ranges, |
185 | 093bc2cd | Avi Kivity | view->nr_allocated * sizeof(*view->ranges));
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186 | 093bc2cd | Avi Kivity | } |
187 | 093bc2cd | Avi Kivity | memmove(view->ranges + pos + 1, view->ranges + pos,
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188 | 093bc2cd | Avi Kivity | (view->nr - pos) * sizeof(FlatRange));
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189 | 093bc2cd | Avi Kivity | view->ranges[pos] = *range; |
190 | 093bc2cd | Avi Kivity | ++view->nr; |
191 | 093bc2cd | Avi Kivity | } |
192 | 093bc2cd | Avi Kivity | |
193 | 093bc2cd | Avi Kivity | static void flatview_destroy(FlatView *view) |
194 | 093bc2cd | Avi Kivity | { |
195 | 093bc2cd | Avi Kivity | qemu_free(view->ranges); |
196 | 093bc2cd | Avi Kivity | } |
197 | 093bc2cd | Avi Kivity | |
198 | 3d8e6bf9 | Avi Kivity | static bool can_merge(FlatRange *r1, FlatRange *r2) |
199 | 3d8e6bf9 | Avi Kivity | { |
200 | 3d8e6bf9 | Avi Kivity | return addrrange_end(r1->addr) == r2->addr.start
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201 | 3d8e6bf9 | Avi Kivity | && r1->mr == r2->mr |
202 | 3d8e6bf9 | Avi Kivity | && r1->offset_in_region + r1->addr.size == r2->offset_in_region |
203 | 3d8e6bf9 | Avi Kivity | && r1->dirty_log_mask == r2->dirty_log_mask; |
204 | 3d8e6bf9 | Avi Kivity | } |
205 | 3d8e6bf9 | Avi Kivity | |
206 | 3d8e6bf9 | Avi Kivity | /* Attempt to simplify a view by merging ajacent ranges */
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207 | 3d8e6bf9 | Avi Kivity | static void flatview_simplify(FlatView *view) |
208 | 3d8e6bf9 | Avi Kivity | { |
209 | 3d8e6bf9 | Avi Kivity | unsigned i, j;
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210 | 3d8e6bf9 | Avi Kivity | |
211 | 3d8e6bf9 | Avi Kivity | i = 0;
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212 | 3d8e6bf9 | Avi Kivity | while (i < view->nr) {
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213 | 3d8e6bf9 | Avi Kivity | j = i + 1;
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214 | 3d8e6bf9 | Avi Kivity | while (j < view->nr
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215 | 3d8e6bf9 | Avi Kivity | && can_merge(&view->ranges[j-1], &view->ranges[j])) {
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216 | 3d8e6bf9 | Avi Kivity | view->ranges[i].addr.size += view->ranges[j].addr.size; |
217 | 3d8e6bf9 | Avi Kivity | ++j; |
218 | 3d8e6bf9 | Avi Kivity | } |
219 | 3d8e6bf9 | Avi Kivity | ++i; |
220 | 3d8e6bf9 | Avi Kivity | memmove(&view->ranges[i], &view->ranges[j], |
221 | 3d8e6bf9 | Avi Kivity | (view->nr - j) * sizeof(view->ranges[j]));
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222 | 3d8e6bf9 | Avi Kivity | view->nr -= j - i; |
223 | 3d8e6bf9 | Avi Kivity | } |
224 | 3d8e6bf9 | Avi Kivity | } |
225 | 3d8e6bf9 | Avi Kivity | |
226 | 16ef61c9 | Avi Kivity | static void memory_region_prepare_ram_addr(MemoryRegion *mr); |
227 | 16ef61c9 | Avi Kivity | |
228 | cc31e6e7 | Avi Kivity | static void as_memory_range_add(AddressSpace *as, FlatRange *fr) |
229 | cc31e6e7 | Avi Kivity | { |
230 | cc31e6e7 | Avi Kivity | ram_addr_t phys_offset, region_offset; |
231 | cc31e6e7 | Avi Kivity | |
232 | 16ef61c9 | Avi Kivity | memory_region_prepare_ram_addr(fr->mr); |
233 | 16ef61c9 | Avi Kivity | |
234 | cc31e6e7 | Avi Kivity | phys_offset = fr->mr->ram_addr; |
235 | cc31e6e7 | Avi Kivity | region_offset = fr->offset_in_region; |
236 | cc31e6e7 | Avi Kivity | /* cpu_register_physical_memory_log() wants region_offset for
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237 | cc31e6e7 | Avi Kivity | * mmio, but prefers offseting phys_offset for RAM. Humour it.
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238 | cc31e6e7 | Avi Kivity | */
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239 | cc31e6e7 | Avi Kivity | if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM) {
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240 | cc31e6e7 | Avi Kivity | phys_offset += region_offset; |
241 | cc31e6e7 | Avi Kivity | region_offset = 0;
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242 | cc31e6e7 | Avi Kivity | } |
243 | cc31e6e7 | Avi Kivity | |
244 | cc31e6e7 | Avi Kivity | cpu_register_physical_memory_log(fr->addr.start, |
245 | cc31e6e7 | Avi Kivity | fr->addr.size, |
246 | cc31e6e7 | Avi Kivity | phys_offset, |
247 | cc31e6e7 | Avi Kivity | region_offset, |
248 | cc31e6e7 | Avi Kivity | fr->dirty_log_mask); |
249 | cc31e6e7 | Avi Kivity | } |
250 | cc31e6e7 | Avi Kivity | |
251 | cc31e6e7 | Avi Kivity | static void as_memory_range_del(AddressSpace *as, FlatRange *fr) |
252 | cc31e6e7 | Avi Kivity | { |
253 | 39b796f2 | Avi Kivity | if (fr->dirty_log_mask) {
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254 | 39b796f2 | Avi Kivity | cpu_physical_sync_dirty_bitmap(fr->addr.start, |
255 | 39b796f2 | Avi Kivity | fr->addr.start + fr->addr.size); |
256 | 39b796f2 | Avi Kivity | } |
257 | cc31e6e7 | Avi Kivity | cpu_register_physical_memory(fr->addr.start, fr->addr.size, |
258 | cc31e6e7 | Avi Kivity | IO_MEM_UNASSIGNED); |
259 | cc31e6e7 | Avi Kivity | } |
260 | cc31e6e7 | Avi Kivity | |
261 | cc31e6e7 | Avi Kivity | static void as_memory_log_start(AddressSpace *as, FlatRange *fr) |
262 | cc31e6e7 | Avi Kivity | { |
263 | cc31e6e7 | Avi Kivity | cpu_physical_log_start(fr->addr.start, fr->addr.size); |
264 | cc31e6e7 | Avi Kivity | } |
265 | cc31e6e7 | Avi Kivity | |
266 | cc31e6e7 | Avi Kivity | static void as_memory_log_stop(AddressSpace *as, FlatRange *fr) |
267 | cc31e6e7 | Avi Kivity | { |
268 | cc31e6e7 | Avi Kivity | cpu_physical_log_stop(fr->addr.start, fr->addr.size); |
269 | cc31e6e7 | Avi Kivity | } |
270 | cc31e6e7 | Avi Kivity | |
271 | 3e9d69e7 | Avi Kivity | static void as_memory_ioeventfd_add(AddressSpace *as, MemoryRegionIoeventfd *fd) |
272 | 3e9d69e7 | Avi Kivity | { |
273 | 3e9d69e7 | Avi Kivity | int r;
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274 | 3e9d69e7 | Avi Kivity | |
275 | 3e9d69e7 | Avi Kivity | assert(fd->match_data && fd->addr.size == 4);
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276 | 3e9d69e7 | Avi Kivity | |
277 | 3e9d69e7 | Avi Kivity | r = kvm_set_ioeventfd_mmio_long(fd->fd, fd->addr.start, fd->data, true);
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278 | 3e9d69e7 | Avi Kivity | if (r < 0) { |
279 | 3e9d69e7 | Avi Kivity | abort(); |
280 | 3e9d69e7 | Avi Kivity | } |
281 | 3e9d69e7 | Avi Kivity | } |
282 | 3e9d69e7 | Avi Kivity | |
283 | 3e9d69e7 | Avi Kivity | static void as_memory_ioeventfd_del(AddressSpace *as, MemoryRegionIoeventfd *fd) |
284 | 3e9d69e7 | Avi Kivity | { |
285 | 3e9d69e7 | Avi Kivity | int r;
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286 | 3e9d69e7 | Avi Kivity | |
287 | 3e9d69e7 | Avi Kivity | r = kvm_set_ioeventfd_mmio_long(fd->fd, fd->addr.start, fd->data, false);
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288 | 3e9d69e7 | Avi Kivity | if (r < 0) { |
289 | 3e9d69e7 | Avi Kivity | abort(); |
290 | 3e9d69e7 | Avi Kivity | } |
291 | 3e9d69e7 | Avi Kivity | } |
292 | 3e9d69e7 | Avi Kivity | |
293 | cc31e6e7 | Avi Kivity | static const AddressSpaceOps address_space_ops_memory = { |
294 | cc31e6e7 | Avi Kivity | .range_add = as_memory_range_add, |
295 | cc31e6e7 | Avi Kivity | .range_del = as_memory_range_del, |
296 | cc31e6e7 | Avi Kivity | .log_start = as_memory_log_start, |
297 | cc31e6e7 | Avi Kivity | .log_stop = as_memory_log_stop, |
298 | 3e9d69e7 | Avi Kivity | .ioeventfd_add = as_memory_ioeventfd_add, |
299 | 3e9d69e7 | Avi Kivity | .ioeventfd_del = as_memory_ioeventfd_del, |
300 | cc31e6e7 | Avi Kivity | }; |
301 | cc31e6e7 | Avi Kivity | |
302 | cc31e6e7 | Avi Kivity | static AddressSpace address_space_memory = {
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303 | cc31e6e7 | Avi Kivity | .ops = &address_space_ops_memory, |
304 | cc31e6e7 | Avi Kivity | }; |
305 | cc31e6e7 | Avi Kivity | |
306 | 627a0e90 | Avi Kivity | static const MemoryRegionPortio *find_portio(MemoryRegion *mr, uint64_t offset, |
307 | 627a0e90 | Avi Kivity | unsigned width, bool write) |
308 | 627a0e90 | Avi Kivity | { |
309 | 627a0e90 | Avi Kivity | const MemoryRegionPortio *mrp;
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310 | 627a0e90 | Avi Kivity | |
311 | 627a0e90 | Avi Kivity | for (mrp = mr->ops->old_portio; mrp->size; ++mrp) {
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312 | 627a0e90 | Avi Kivity | if (offset >= mrp->offset && offset < mrp->offset + mrp->len
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313 | 627a0e90 | Avi Kivity | && width == mrp->size |
314 | 627a0e90 | Avi Kivity | && (write ? (bool)mrp->write : (bool)mrp->read)) { |
315 | 627a0e90 | Avi Kivity | return mrp;
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316 | 627a0e90 | Avi Kivity | } |
317 | 627a0e90 | Avi Kivity | } |
318 | 627a0e90 | Avi Kivity | return NULL; |
319 | 627a0e90 | Avi Kivity | } |
320 | 627a0e90 | Avi Kivity | |
321 | 658b2224 | Avi Kivity | static void memory_region_iorange_read(IORange *iorange, |
322 | 658b2224 | Avi Kivity | uint64_t offset, |
323 | 658b2224 | Avi Kivity | unsigned width,
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324 | 658b2224 | Avi Kivity | uint64_t *data) |
325 | 658b2224 | Avi Kivity | { |
326 | 658b2224 | Avi Kivity | MemoryRegion *mr = container_of(iorange, MemoryRegion, iorange); |
327 | 658b2224 | Avi Kivity | |
328 | 627a0e90 | Avi Kivity | if (mr->ops->old_portio) {
|
329 | 627a0e90 | Avi Kivity | const MemoryRegionPortio *mrp = find_portio(mr, offset, width, false); |
330 | 627a0e90 | Avi Kivity | |
331 | 627a0e90 | Avi Kivity | *data = ((uint64_t)1 << (width * 8)) - 1; |
332 | 627a0e90 | Avi Kivity | if (mrp) {
|
333 | 627a0e90 | Avi Kivity | *data = mrp->read(mr->opaque, offset - mrp->offset); |
334 | 627a0e90 | Avi Kivity | } |
335 | 627a0e90 | Avi Kivity | return;
|
336 | 627a0e90 | Avi Kivity | } |
337 | 658b2224 | Avi Kivity | *data = mr->ops->read(mr->opaque, offset, width); |
338 | 658b2224 | Avi Kivity | } |
339 | 658b2224 | Avi Kivity | |
340 | 658b2224 | Avi Kivity | static void memory_region_iorange_write(IORange *iorange, |
341 | 658b2224 | Avi Kivity | uint64_t offset, |
342 | 658b2224 | Avi Kivity | unsigned width,
|
343 | 658b2224 | Avi Kivity | uint64_t data) |
344 | 658b2224 | Avi Kivity | { |
345 | 658b2224 | Avi Kivity | MemoryRegion *mr = container_of(iorange, MemoryRegion, iorange); |
346 | 658b2224 | Avi Kivity | |
347 | 627a0e90 | Avi Kivity | if (mr->ops->old_portio) {
|
348 | 627a0e90 | Avi Kivity | const MemoryRegionPortio *mrp = find_portio(mr, offset, width, true); |
349 | 627a0e90 | Avi Kivity | |
350 | 627a0e90 | Avi Kivity | if (mrp) {
|
351 | 627a0e90 | Avi Kivity | mrp->write(mr->opaque, offset - mrp->offset, data); |
352 | 627a0e90 | Avi Kivity | } |
353 | 627a0e90 | Avi Kivity | return;
|
354 | 627a0e90 | Avi Kivity | } |
355 | 658b2224 | Avi Kivity | mr->ops->write(mr->opaque, offset, data, width); |
356 | 658b2224 | Avi Kivity | } |
357 | 658b2224 | Avi Kivity | |
358 | 658b2224 | Avi Kivity | static const IORangeOps memory_region_iorange_ops = { |
359 | 658b2224 | Avi Kivity | .read = memory_region_iorange_read, |
360 | 658b2224 | Avi Kivity | .write = memory_region_iorange_write, |
361 | 658b2224 | Avi Kivity | }; |
362 | 658b2224 | Avi Kivity | |
363 | 658b2224 | Avi Kivity | static void as_io_range_add(AddressSpace *as, FlatRange *fr) |
364 | 658b2224 | Avi Kivity | { |
365 | 658b2224 | Avi Kivity | iorange_init(&fr->mr->iorange, &memory_region_iorange_ops, |
366 | 658b2224 | Avi Kivity | fr->addr.start,fr->addr.size); |
367 | 658b2224 | Avi Kivity | ioport_register(&fr->mr->iorange); |
368 | 658b2224 | Avi Kivity | } |
369 | 658b2224 | Avi Kivity | |
370 | 658b2224 | Avi Kivity | static void as_io_range_del(AddressSpace *as, FlatRange *fr) |
371 | 658b2224 | Avi Kivity | { |
372 | 658b2224 | Avi Kivity | isa_unassign_ioport(fr->addr.start, fr->addr.size); |
373 | 658b2224 | Avi Kivity | } |
374 | 658b2224 | Avi Kivity | |
375 | 3e9d69e7 | Avi Kivity | static void as_io_ioeventfd_add(AddressSpace *as, MemoryRegionIoeventfd *fd) |
376 | 3e9d69e7 | Avi Kivity | { |
377 | 3e9d69e7 | Avi Kivity | int r;
|
378 | 3e9d69e7 | Avi Kivity | |
379 | 3e9d69e7 | Avi Kivity | assert(fd->match_data && fd->addr.size == 2);
|
380 | 3e9d69e7 | Avi Kivity | |
381 | 3e9d69e7 | Avi Kivity | r = kvm_set_ioeventfd_pio_word(fd->fd, fd->addr.start, fd->data, true);
|
382 | 3e9d69e7 | Avi Kivity | if (r < 0) { |
383 | 3e9d69e7 | Avi Kivity | abort(); |
384 | 3e9d69e7 | Avi Kivity | } |
385 | 3e9d69e7 | Avi Kivity | } |
386 | 3e9d69e7 | Avi Kivity | |
387 | 3e9d69e7 | Avi Kivity | static void as_io_ioeventfd_del(AddressSpace *as, MemoryRegionIoeventfd *fd) |
388 | 3e9d69e7 | Avi Kivity | { |
389 | 3e9d69e7 | Avi Kivity | int r;
|
390 | 3e9d69e7 | Avi Kivity | |
391 | 3e9d69e7 | Avi Kivity | r = kvm_set_ioeventfd_pio_word(fd->fd, fd->addr.start, fd->data, false);
|
392 | 3e9d69e7 | Avi Kivity | if (r < 0) { |
393 | 3e9d69e7 | Avi Kivity | abort(); |
394 | 3e9d69e7 | Avi Kivity | } |
395 | 3e9d69e7 | Avi Kivity | } |
396 | 3e9d69e7 | Avi Kivity | |
397 | 658b2224 | Avi Kivity | static const AddressSpaceOps address_space_ops_io = { |
398 | 658b2224 | Avi Kivity | .range_add = as_io_range_add, |
399 | 658b2224 | Avi Kivity | .range_del = as_io_range_del, |
400 | 3e9d69e7 | Avi Kivity | .ioeventfd_add = as_io_ioeventfd_add, |
401 | 3e9d69e7 | Avi Kivity | .ioeventfd_del = as_io_ioeventfd_del, |
402 | 658b2224 | Avi Kivity | }; |
403 | 658b2224 | Avi Kivity | |
404 | 658b2224 | Avi Kivity | static AddressSpace address_space_io = {
|
405 | 658b2224 | Avi Kivity | .ops = &address_space_ops_io, |
406 | 658b2224 | Avi Kivity | }; |
407 | 658b2224 | Avi Kivity | |
408 | 093bc2cd | Avi Kivity | /* Render a memory region into the global view. Ranges in @view obscure
|
409 | 093bc2cd | Avi Kivity | * ranges in @mr.
|
410 | 093bc2cd | Avi Kivity | */
|
411 | 093bc2cd | Avi Kivity | static void render_memory_region(FlatView *view, |
412 | 093bc2cd | Avi Kivity | MemoryRegion *mr, |
413 | 093bc2cd | Avi Kivity | target_phys_addr_t base, |
414 | 093bc2cd | Avi Kivity | AddrRange clip) |
415 | 093bc2cd | Avi Kivity | { |
416 | 093bc2cd | Avi Kivity | MemoryRegion *subregion; |
417 | 093bc2cd | Avi Kivity | unsigned i;
|
418 | 093bc2cd | Avi Kivity | target_phys_addr_t offset_in_region; |
419 | 8417cebf | Avi Kivity | int64_t remain; |
420 | 8417cebf | Avi Kivity | int64_t now; |
421 | 093bc2cd | Avi Kivity | FlatRange fr; |
422 | 093bc2cd | Avi Kivity | AddrRange tmp; |
423 | 093bc2cd | Avi Kivity | |
424 | 093bc2cd | Avi Kivity | base += mr->addr; |
425 | 093bc2cd | Avi Kivity | |
426 | 093bc2cd | Avi Kivity | tmp = addrrange_make(base, mr->size); |
427 | 093bc2cd | Avi Kivity | |
428 | 093bc2cd | Avi Kivity | if (!addrrange_intersects(tmp, clip)) {
|
429 | 093bc2cd | Avi Kivity | return;
|
430 | 093bc2cd | Avi Kivity | } |
431 | 093bc2cd | Avi Kivity | |
432 | 093bc2cd | Avi Kivity | clip = addrrange_intersection(tmp, clip); |
433 | 093bc2cd | Avi Kivity | |
434 | 093bc2cd | Avi Kivity | if (mr->alias) {
|
435 | 093bc2cd | Avi Kivity | base -= mr->alias->addr; |
436 | 093bc2cd | Avi Kivity | base -= mr->alias_offset; |
437 | 093bc2cd | Avi Kivity | render_memory_region(view, mr->alias, base, clip); |
438 | 093bc2cd | Avi Kivity | return;
|
439 | 093bc2cd | Avi Kivity | } |
440 | 093bc2cd | Avi Kivity | |
441 | 093bc2cd | Avi Kivity | /* Render subregions in priority order. */
|
442 | 093bc2cd | Avi Kivity | QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) { |
443 | 093bc2cd | Avi Kivity | render_memory_region(view, subregion, base, clip); |
444 | 093bc2cd | Avi Kivity | } |
445 | 093bc2cd | Avi Kivity | |
446 | 14a3c10a | Avi Kivity | if (!mr->terminates) {
|
447 | 093bc2cd | Avi Kivity | return;
|
448 | 093bc2cd | Avi Kivity | } |
449 | 093bc2cd | Avi Kivity | |
450 | 093bc2cd | Avi Kivity | offset_in_region = clip.start - base; |
451 | 093bc2cd | Avi Kivity | base = clip.start; |
452 | 093bc2cd | Avi Kivity | remain = clip.size; |
453 | 093bc2cd | Avi Kivity | |
454 | 093bc2cd | Avi Kivity | /* Render the region itself into any gaps left by the current view. */
|
455 | 093bc2cd | Avi Kivity | for (i = 0; i < view->nr && remain; ++i) { |
456 | 093bc2cd | Avi Kivity | if (base >= addrrange_end(view->ranges[i].addr)) {
|
457 | 093bc2cd | Avi Kivity | continue;
|
458 | 093bc2cd | Avi Kivity | } |
459 | 093bc2cd | Avi Kivity | if (base < view->ranges[i].addr.start) {
|
460 | 093bc2cd | Avi Kivity | now = MIN(remain, view->ranges[i].addr.start - base); |
461 | 093bc2cd | Avi Kivity | fr.mr = mr; |
462 | 093bc2cd | Avi Kivity | fr.offset_in_region = offset_in_region; |
463 | 093bc2cd | Avi Kivity | fr.addr = addrrange_make(base, now); |
464 | 5a583347 | Avi Kivity | fr.dirty_log_mask = mr->dirty_log_mask; |
465 | 093bc2cd | Avi Kivity | flatview_insert(view, i, &fr); |
466 | 093bc2cd | Avi Kivity | ++i; |
467 | 093bc2cd | Avi Kivity | base += now; |
468 | 093bc2cd | Avi Kivity | offset_in_region += now; |
469 | 093bc2cd | Avi Kivity | remain -= now; |
470 | 093bc2cd | Avi Kivity | } |
471 | 093bc2cd | Avi Kivity | if (base == view->ranges[i].addr.start) {
|
472 | 093bc2cd | Avi Kivity | now = MIN(remain, view->ranges[i].addr.size); |
473 | 093bc2cd | Avi Kivity | base += now; |
474 | 093bc2cd | Avi Kivity | offset_in_region += now; |
475 | 093bc2cd | Avi Kivity | remain -= now; |
476 | 093bc2cd | Avi Kivity | } |
477 | 093bc2cd | Avi Kivity | } |
478 | 093bc2cd | Avi Kivity | if (remain) {
|
479 | 093bc2cd | Avi Kivity | fr.mr = mr; |
480 | 093bc2cd | Avi Kivity | fr.offset_in_region = offset_in_region; |
481 | 093bc2cd | Avi Kivity | fr.addr = addrrange_make(base, remain); |
482 | 5a583347 | Avi Kivity | fr.dirty_log_mask = mr->dirty_log_mask; |
483 | 093bc2cd | Avi Kivity | flatview_insert(view, i, &fr); |
484 | 093bc2cd | Avi Kivity | } |
485 | 093bc2cd | Avi Kivity | } |
486 | 093bc2cd | Avi Kivity | |
487 | 093bc2cd | Avi Kivity | /* Render a memory topology into a list of disjoint absolute ranges. */
|
488 | 093bc2cd | Avi Kivity | static FlatView generate_memory_topology(MemoryRegion *mr)
|
489 | 093bc2cd | Avi Kivity | { |
490 | 093bc2cd | Avi Kivity | FlatView view; |
491 | 093bc2cd | Avi Kivity | |
492 | 093bc2cd | Avi Kivity | flatview_init(&view); |
493 | 093bc2cd | Avi Kivity | |
494 | 8417cebf | Avi Kivity | render_memory_region(&view, mr, 0, addrrange_make(0, INT64_MAX)); |
495 | 3d8e6bf9 | Avi Kivity | flatview_simplify(&view); |
496 | 093bc2cd | Avi Kivity | |
497 | 093bc2cd | Avi Kivity | return view;
|
498 | 093bc2cd | Avi Kivity | } |
499 | 093bc2cd | Avi Kivity | |
500 | 3e9d69e7 | Avi Kivity | static void address_space_add_del_ioeventfds(AddressSpace *as, |
501 | 3e9d69e7 | Avi Kivity | MemoryRegionIoeventfd *fds_new, |
502 | 3e9d69e7 | Avi Kivity | unsigned fds_new_nb,
|
503 | 3e9d69e7 | Avi Kivity | MemoryRegionIoeventfd *fds_old, |
504 | 3e9d69e7 | Avi Kivity | unsigned fds_old_nb)
|
505 | 3e9d69e7 | Avi Kivity | { |
506 | 3e9d69e7 | Avi Kivity | unsigned iold, inew;
|
507 | 3e9d69e7 | Avi Kivity | |
508 | 3e9d69e7 | Avi Kivity | /* Generate a symmetric difference of the old and new fd sets, adding
|
509 | 3e9d69e7 | Avi Kivity | * and deleting as necessary.
|
510 | 3e9d69e7 | Avi Kivity | */
|
511 | 3e9d69e7 | Avi Kivity | |
512 | 3e9d69e7 | Avi Kivity | iold = inew = 0;
|
513 | 3e9d69e7 | Avi Kivity | while (iold < fds_old_nb || inew < fds_new_nb) {
|
514 | 3e9d69e7 | Avi Kivity | if (iold < fds_old_nb
|
515 | 3e9d69e7 | Avi Kivity | && (inew == fds_new_nb |
516 | 3e9d69e7 | Avi Kivity | || memory_region_ioeventfd_before(fds_old[iold], |
517 | 3e9d69e7 | Avi Kivity | fds_new[inew]))) { |
518 | 3e9d69e7 | Avi Kivity | as->ops->ioeventfd_del(as, &fds_old[iold]); |
519 | 3e9d69e7 | Avi Kivity | ++iold; |
520 | 3e9d69e7 | Avi Kivity | } else if (inew < fds_new_nb |
521 | 3e9d69e7 | Avi Kivity | && (iold == fds_old_nb |
522 | 3e9d69e7 | Avi Kivity | || memory_region_ioeventfd_before(fds_new[inew], |
523 | 3e9d69e7 | Avi Kivity | fds_old[iold]))) { |
524 | 3e9d69e7 | Avi Kivity | as->ops->ioeventfd_add(as, &fds_new[inew]); |
525 | 3e9d69e7 | Avi Kivity | ++inew; |
526 | 3e9d69e7 | Avi Kivity | } else {
|
527 | 3e9d69e7 | Avi Kivity | ++iold; |
528 | 3e9d69e7 | Avi Kivity | ++inew; |
529 | 3e9d69e7 | Avi Kivity | } |
530 | 3e9d69e7 | Avi Kivity | } |
531 | 3e9d69e7 | Avi Kivity | } |
532 | 3e9d69e7 | Avi Kivity | |
533 | 3e9d69e7 | Avi Kivity | static void address_space_update_ioeventfds(AddressSpace *as) |
534 | 3e9d69e7 | Avi Kivity | { |
535 | 3e9d69e7 | Avi Kivity | FlatRange *fr; |
536 | 3e9d69e7 | Avi Kivity | unsigned ioeventfd_nb = 0; |
537 | 3e9d69e7 | Avi Kivity | MemoryRegionIoeventfd *ioeventfds = NULL;
|
538 | 3e9d69e7 | Avi Kivity | AddrRange tmp; |
539 | 3e9d69e7 | Avi Kivity | unsigned i;
|
540 | 3e9d69e7 | Avi Kivity | |
541 | 3e9d69e7 | Avi Kivity | FOR_EACH_FLAT_RANGE(fr, &as->current_map) { |
542 | 3e9d69e7 | Avi Kivity | for (i = 0; i < fr->mr->ioeventfd_nb; ++i) { |
543 | 3e9d69e7 | Avi Kivity | tmp = addrrange_shift(fr->mr->ioeventfds[i].addr, |
544 | 3e9d69e7 | Avi Kivity | fr->addr.start - fr->offset_in_region); |
545 | 3e9d69e7 | Avi Kivity | if (addrrange_intersects(fr->addr, tmp)) {
|
546 | 3e9d69e7 | Avi Kivity | ++ioeventfd_nb; |
547 | 3e9d69e7 | Avi Kivity | ioeventfds = qemu_realloc(ioeventfds, |
548 | 3e9d69e7 | Avi Kivity | ioeventfd_nb * sizeof(*ioeventfds));
|
549 | 3e9d69e7 | Avi Kivity | ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
|
550 | 3e9d69e7 | Avi Kivity | ioeventfds[ioeventfd_nb-1].addr = tmp;
|
551 | 3e9d69e7 | Avi Kivity | } |
552 | 3e9d69e7 | Avi Kivity | } |
553 | 3e9d69e7 | Avi Kivity | } |
554 | 3e9d69e7 | Avi Kivity | |
555 | 3e9d69e7 | Avi Kivity | address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb, |
556 | 3e9d69e7 | Avi Kivity | as->ioeventfds, as->ioeventfd_nb); |
557 | 3e9d69e7 | Avi Kivity | |
558 | 3e9d69e7 | Avi Kivity | qemu_free(as->ioeventfds); |
559 | 3e9d69e7 | Avi Kivity | as->ioeventfds = ioeventfds; |
560 | 3e9d69e7 | Avi Kivity | as->ioeventfd_nb = ioeventfd_nb; |
561 | 3e9d69e7 | Avi Kivity | } |
562 | 3e9d69e7 | Avi Kivity | |
563 | b8af1afb | Avi Kivity | static void address_space_update_topology_pass(AddressSpace *as, |
564 | b8af1afb | Avi Kivity | FlatView old_view, |
565 | b8af1afb | Avi Kivity | FlatView new_view, |
566 | b8af1afb | Avi Kivity | bool adding)
|
567 | 093bc2cd | Avi Kivity | { |
568 | 093bc2cd | Avi Kivity | unsigned iold, inew;
|
569 | 093bc2cd | Avi Kivity | FlatRange *frold, *frnew; |
570 | 093bc2cd | Avi Kivity | |
571 | 093bc2cd | Avi Kivity | /* Generate a symmetric difference of the old and new memory maps.
|
572 | 093bc2cd | Avi Kivity | * Kill ranges in the old map, and instantiate ranges in the new map.
|
573 | 093bc2cd | Avi Kivity | */
|
574 | 093bc2cd | Avi Kivity | iold = inew = 0;
|
575 | 093bc2cd | Avi Kivity | while (iold < old_view.nr || inew < new_view.nr) {
|
576 | 093bc2cd | Avi Kivity | if (iold < old_view.nr) {
|
577 | 093bc2cd | Avi Kivity | frold = &old_view.ranges[iold]; |
578 | 093bc2cd | Avi Kivity | } else {
|
579 | 093bc2cd | Avi Kivity | frold = NULL;
|
580 | 093bc2cd | Avi Kivity | } |
581 | 093bc2cd | Avi Kivity | if (inew < new_view.nr) {
|
582 | 093bc2cd | Avi Kivity | frnew = &new_view.ranges[inew]; |
583 | 093bc2cd | Avi Kivity | } else {
|
584 | 093bc2cd | Avi Kivity | frnew = NULL;
|
585 | 093bc2cd | Avi Kivity | } |
586 | 093bc2cd | Avi Kivity | |
587 | 093bc2cd | Avi Kivity | if (frold
|
588 | 093bc2cd | Avi Kivity | && (!frnew |
589 | 093bc2cd | Avi Kivity | || frold->addr.start < frnew->addr.start |
590 | 093bc2cd | Avi Kivity | || (frold->addr.start == frnew->addr.start |
591 | 093bc2cd | Avi Kivity | && !flatrange_equal(frold, frnew)))) { |
592 | 093bc2cd | Avi Kivity | /* In old, but (not in new, or in new but attributes changed). */
|
593 | 093bc2cd | Avi Kivity | |
594 | b8af1afb | Avi Kivity | if (!adding) {
|
595 | b8af1afb | Avi Kivity | as->ops->range_del(as, frold); |
596 | b8af1afb | Avi Kivity | } |
597 | b8af1afb | Avi Kivity | |
598 | 093bc2cd | Avi Kivity | ++iold; |
599 | 093bc2cd | Avi Kivity | } else if (frold && frnew && flatrange_equal(frold, frnew)) { |
600 | 093bc2cd | Avi Kivity | /* In both (logging may have changed) */
|
601 | 093bc2cd | Avi Kivity | |
602 | b8af1afb | Avi Kivity | if (adding) {
|
603 | b8af1afb | Avi Kivity | if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
|
604 | b8af1afb | Avi Kivity | as->ops->log_stop(as, frnew); |
605 | b8af1afb | Avi Kivity | } else if (frnew->dirty_log_mask && !frold->dirty_log_mask) { |
606 | b8af1afb | Avi Kivity | as->ops->log_start(as, frnew); |
607 | b8af1afb | Avi Kivity | } |
608 | 5a583347 | Avi Kivity | } |
609 | 5a583347 | Avi Kivity | |
610 | 093bc2cd | Avi Kivity | ++iold; |
611 | 093bc2cd | Avi Kivity | ++inew; |
612 | 093bc2cd | Avi Kivity | } else {
|
613 | 093bc2cd | Avi Kivity | /* In new */
|
614 | 093bc2cd | Avi Kivity | |
615 | b8af1afb | Avi Kivity | if (adding) {
|
616 | b8af1afb | Avi Kivity | as->ops->range_add(as, frnew); |
617 | b8af1afb | Avi Kivity | } |
618 | b8af1afb | Avi Kivity | |
619 | 093bc2cd | Avi Kivity | ++inew; |
620 | 093bc2cd | Avi Kivity | } |
621 | 093bc2cd | Avi Kivity | } |
622 | b8af1afb | Avi Kivity | } |
623 | b8af1afb | Avi Kivity | |
624 | b8af1afb | Avi Kivity | |
625 | b8af1afb | Avi Kivity | static void address_space_update_topology(AddressSpace *as) |
626 | b8af1afb | Avi Kivity | { |
627 | b8af1afb | Avi Kivity | FlatView old_view = as->current_map; |
628 | b8af1afb | Avi Kivity | FlatView new_view = generate_memory_topology(as->root); |
629 | b8af1afb | Avi Kivity | |
630 | b8af1afb | Avi Kivity | address_space_update_topology_pass(as, old_view, new_view, false);
|
631 | b8af1afb | Avi Kivity | address_space_update_topology_pass(as, old_view, new_view, true);
|
632 | b8af1afb | Avi Kivity | |
633 | cc31e6e7 | Avi Kivity | as->current_map = new_view; |
634 | 093bc2cd | Avi Kivity | flatview_destroy(&old_view); |
635 | 3e9d69e7 | Avi Kivity | address_space_update_ioeventfds(as); |
636 | 093bc2cd | Avi Kivity | } |
637 | 093bc2cd | Avi Kivity | |
638 | cc31e6e7 | Avi Kivity | static void memory_region_update_topology(void) |
639 | cc31e6e7 | Avi Kivity | { |
640 | 4ef4db86 | Avi Kivity | if (memory_region_transaction_depth) {
|
641 | 4ef4db86 | Avi Kivity | return;
|
642 | 4ef4db86 | Avi Kivity | } |
643 | 4ef4db86 | Avi Kivity | |
644 | 658b2224 | Avi Kivity | if (address_space_memory.root) {
|
645 | 658b2224 | Avi Kivity | address_space_update_topology(&address_space_memory); |
646 | 658b2224 | Avi Kivity | } |
647 | 658b2224 | Avi Kivity | if (address_space_io.root) {
|
648 | 658b2224 | Avi Kivity | address_space_update_topology(&address_space_io); |
649 | 658b2224 | Avi Kivity | } |
650 | cc31e6e7 | Avi Kivity | } |
651 | cc31e6e7 | Avi Kivity | |
652 | 4ef4db86 | Avi Kivity | void memory_region_transaction_begin(void) |
653 | 4ef4db86 | Avi Kivity | { |
654 | 4ef4db86 | Avi Kivity | ++memory_region_transaction_depth; |
655 | 4ef4db86 | Avi Kivity | } |
656 | 4ef4db86 | Avi Kivity | |
657 | 4ef4db86 | Avi Kivity | void memory_region_transaction_commit(void) |
658 | 4ef4db86 | Avi Kivity | { |
659 | 4ef4db86 | Avi Kivity | assert(memory_region_transaction_depth); |
660 | 4ef4db86 | Avi Kivity | --memory_region_transaction_depth; |
661 | 4ef4db86 | Avi Kivity | memory_region_update_topology(); |
662 | 4ef4db86 | Avi Kivity | } |
663 | 4ef4db86 | Avi Kivity | |
664 | 545e92e0 | Avi Kivity | static void memory_region_destructor_none(MemoryRegion *mr) |
665 | 545e92e0 | Avi Kivity | { |
666 | 545e92e0 | Avi Kivity | } |
667 | 545e92e0 | Avi Kivity | |
668 | 545e92e0 | Avi Kivity | static void memory_region_destructor_ram(MemoryRegion *mr) |
669 | 545e92e0 | Avi Kivity | { |
670 | 545e92e0 | Avi Kivity | qemu_ram_free(mr->ram_addr); |
671 | 545e92e0 | Avi Kivity | } |
672 | 545e92e0 | Avi Kivity | |
673 | 545e92e0 | Avi Kivity | static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr) |
674 | 545e92e0 | Avi Kivity | { |
675 | 545e92e0 | Avi Kivity | qemu_ram_free_from_ptr(mr->ram_addr); |
676 | 545e92e0 | Avi Kivity | } |
677 | 545e92e0 | Avi Kivity | |
678 | 545e92e0 | Avi Kivity | static void memory_region_destructor_iomem(MemoryRegion *mr) |
679 | 545e92e0 | Avi Kivity | { |
680 | 545e92e0 | Avi Kivity | cpu_unregister_io_memory(mr->ram_addr); |
681 | 545e92e0 | Avi Kivity | } |
682 | 545e92e0 | Avi Kivity | |
683 | 093bc2cd | Avi Kivity | void memory_region_init(MemoryRegion *mr,
|
684 | 093bc2cd | Avi Kivity | const char *name, |
685 | 093bc2cd | Avi Kivity | uint64_t size) |
686 | 093bc2cd | Avi Kivity | { |
687 | 093bc2cd | Avi Kivity | mr->ops = NULL;
|
688 | 093bc2cd | Avi Kivity | mr->parent = NULL;
|
689 | 093bc2cd | Avi Kivity | mr->size = size; |
690 | 093bc2cd | Avi Kivity | mr->addr = 0;
|
691 | 093bc2cd | Avi Kivity | mr->offset = 0;
|
692 | 14a3c10a | Avi Kivity | mr->terminates = false;
|
693 | 545e92e0 | Avi Kivity | mr->destructor = memory_region_destructor_none; |
694 | 093bc2cd | Avi Kivity | mr->priority = 0;
|
695 | 093bc2cd | Avi Kivity | mr->may_overlap = false;
|
696 | 093bc2cd | Avi Kivity | mr->alias = NULL;
|
697 | 093bc2cd | Avi Kivity | QTAILQ_INIT(&mr->subregions); |
698 | 093bc2cd | Avi Kivity | memset(&mr->subregions_link, 0, sizeof mr->subregions_link); |
699 | 093bc2cd | Avi Kivity | QTAILQ_INIT(&mr->coalesced); |
700 | 093bc2cd | Avi Kivity | mr->name = qemu_strdup(name); |
701 | 5a583347 | Avi Kivity | mr->dirty_log_mask = 0;
|
702 | 3e9d69e7 | Avi Kivity | mr->ioeventfd_nb = 0;
|
703 | 3e9d69e7 | Avi Kivity | mr->ioeventfds = NULL;
|
704 | 093bc2cd | Avi Kivity | } |
705 | 093bc2cd | Avi Kivity | |
706 | 093bc2cd | Avi Kivity | static bool memory_region_access_valid(MemoryRegion *mr, |
707 | 093bc2cd | Avi Kivity | target_phys_addr_t addr, |
708 | 093bc2cd | Avi Kivity | unsigned size)
|
709 | 093bc2cd | Avi Kivity | { |
710 | 093bc2cd | Avi Kivity | if (!mr->ops->valid.unaligned && (addr & (size - 1))) { |
711 | 093bc2cd | Avi Kivity | return false; |
712 | 093bc2cd | Avi Kivity | } |
713 | 093bc2cd | Avi Kivity | |
714 | 093bc2cd | Avi Kivity | /* Treat zero as compatibility all valid */
|
715 | 093bc2cd | Avi Kivity | if (!mr->ops->valid.max_access_size) {
|
716 | 093bc2cd | Avi Kivity | return true; |
717 | 093bc2cd | Avi Kivity | } |
718 | 093bc2cd | Avi Kivity | |
719 | 093bc2cd | Avi Kivity | if (size > mr->ops->valid.max_access_size
|
720 | 093bc2cd | Avi Kivity | || size < mr->ops->valid.min_access_size) { |
721 | 093bc2cd | Avi Kivity | return false; |
722 | 093bc2cd | Avi Kivity | } |
723 | 093bc2cd | Avi Kivity | return true; |
724 | 093bc2cd | Avi Kivity | } |
725 | 093bc2cd | Avi Kivity | |
726 | 093bc2cd | Avi Kivity | static uint32_t memory_region_read_thunk_n(void *_mr, |
727 | 093bc2cd | Avi Kivity | target_phys_addr_t addr, |
728 | 093bc2cd | Avi Kivity | unsigned size)
|
729 | 093bc2cd | Avi Kivity | { |
730 | 093bc2cd | Avi Kivity | MemoryRegion *mr = _mr; |
731 | 093bc2cd | Avi Kivity | unsigned access_size, access_size_min, access_size_max;
|
732 | 093bc2cd | Avi Kivity | uint64_t access_mask; |
733 | 093bc2cd | Avi Kivity | uint32_t data = 0, tmp;
|
734 | 093bc2cd | Avi Kivity | unsigned i;
|
735 | 093bc2cd | Avi Kivity | |
736 | 093bc2cd | Avi Kivity | if (!memory_region_access_valid(mr, addr, size)) {
|
737 | 093bc2cd | Avi Kivity | return -1U; /* FIXME: better signalling */ |
738 | 093bc2cd | Avi Kivity | } |
739 | 093bc2cd | Avi Kivity | |
740 | 74901c3b | Avi Kivity | if (!mr->ops->read) {
|
741 | 74901c3b | Avi Kivity | return mr->ops->old_mmio.read[bitops_ffsl(size)](mr->opaque, addr);
|
742 | 74901c3b | Avi Kivity | } |
743 | 74901c3b | Avi Kivity | |
744 | 093bc2cd | Avi Kivity | /* FIXME: support unaligned access */
|
745 | 093bc2cd | Avi Kivity | |
746 | 093bc2cd | Avi Kivity | access_size_min = mr->ops->impl.min_access_size; |
747 | 093bc2cd | Avi Kivity | if (!access_size_min) {
|
748 | 093bc2cd | Avi Kivity | access_size_min = 1;
|
749 | 093bc2cd | Avi Kivity | } |
750 | 093bc2cd | Avi Kivity | access_size_max = mr->ops->impl.max_access_size; |
751 | 093bc2cd | Avi Kivity | if (!access_size_max) {
|
752 | 093bc2cd | Avi Kivity | access_size_max = 4;
|
753 | 093bc2cd | Avi Kivity | } |
754 | 093bc2cd | Avi Kivity | access_size = MAX(MIN(size, access_size_max), access_size_min); |
755 | 093bc2cd | Avi Kivity | access_mask = -1ULL >> (64 - access_size * 8); |
756 | 093bc2cd | Avi Kivity | addr += mr->offset; |
757 | 093bc2cd | Avi Kivity | for (i = 0; i < size; i += access_size) { |
758 | 093bc2cd | Avi Kivity | /* FIXME: big-endian support */
|
759 | 093bc2cd | Avi Kivity | tmp = mr->ops->read(mr->opaque, addr + i, access_size); |
760 | 093bc2cd | Avi Kivity | data |= (tmp & access_mask) << (i * 8);
|
761 | 093bc2cd | Avi Kivity | } |
762 | 093bc2cd | Avi Kivity | |
763 | 093bc2cd | Avi Kivity | return data;
|
764 | 093bc2cd | Avi Kivity | } |
765 | 093bc2cd | Avi Kivity | |
766 | 093bc2cd | Avi Kivity | static void memory_region_write_thunk_n(void *_mr, |
767 | 093bc2cd | Avi Kivity | target_phys_addr_t addr, |
768 | 093bc2cd | Avi Kivity | unsigned size,
|
769 | 093bc2cd | Avi Kivity | uint64_t data) |
770 | 093bc2cd | Avi Kivity | { |
771 | 093bc2cd | Avi Kivity | MemoryRegion *mr = _mr; |
772 | 093bc2cd | Avi Kivity | unsigned access_size, access_size_min, access_size_max;
|
773 | 093bc2cd | Avi Kivity | uint64_t access_mask; |
774 | 093bc2cd | Avi Kivity | unsigned i;
|
775 | 093bc2cd | Avi Kivity | |
776 | 093bc2cd | Avi Kivity | if (!memory_region_access_valid(mr, addr, size)) {
|
777 | 093bc2cd | Avi Kivity | return; /* FIXME: better signalling */ |
778 | 093bc2cd | Avi Kivity | } |
779 | 093bc2cd | Avi Kivity | |
780 | 74901c3b | Avi Kivity | if (!mr->ops->write) {
|
781 | 74901c3b | Avi Kivity | mr->ops->old_mmio.write[bitops_ffsl(size)](mr->opaque, addr, data); |
782 | 74901c3b | Avi Kivity | return;
|
783 | 74901c3b | Avi Kivity | } |
784 | 74901c3b | Avi Kivity | |
785 | 093bc2cd | Avi Kivity | /* FIXME: support unaligned access */
|
786 | 093bc2cd | Avi Kivity | |
787 | 093bc2cd | Avi Kivity | access_size_min = mr->ops->impl.min_access_size; |
788 | 093bc2cd | Avi Kivity | if (!access_size_min) {
|
789 | 093bc2cd | Avi Kivity | access_size_min = 1;
|
790 | 093bc2cd | Avi Kivity | } |
791 | 093bc2cd | Avi Kivity | access_size_max = mr->ops->impl.max_access_size; |
792 | 093bc2cd | Avi Kivity | if (!access_size_max) {
|
793 | 093bc2cd | Avi Kivity | access_size_max = 4;
|
794 | 093bc2cd | Avi Kivity | } |
795 | 093bc2cd | Avi Kivity | access_size = MAX(MIN(size, access_size_max), access_size_min); |
796 | 093bc2cd | Avi Kivity | access_mask = -1ULL >> (64 - access_size * 8); |
797 | 093bc2cd | Avi Kivity | addr += mr->offset; |
798 | 093bc2cd | Avi Kivity | for (i = 0; i < size; i += access_size) { |
799 | 093bc2cd | Avi Kivity | /* FIXME: big-endian support */
|
800 | 093bc2cd | Avi Kivity | mr->ops->write(mr->opaque, addr + i, (data >> (i * 8)) & access_mask,
|
801 | 093bc2cd | Avi Kivity | access_size); |
802 | 093bc2cd | Avi Kivity | } |
803 | 093bc2cd | Avi Kivity | } |
804 | 093bc2cd | Avi Kivity | |
805 | 093bc2cd | Avi Kivity | static uint32_t memory_region_read_thunk_b(void *mr, target_phys_addr_t addr) |
806 | 093bc2cd | Avi Kivity | { |
807 | 093bc2cd | Avi Kivity | return memory_region_read_thunk_n(mr, addr, 1); |
808 | 093bc2cd | Avi Kivity | } |
809 | 093bc2cd | Avi Kivity | |
810 | 093bc2cd | Avi Kivity | static uint32_t memory_region_read_thunk_w(void *mr, target_phys_addr_t addr) |
811 | 093bc2cd | Avi Kivity | { |
812 | 093bc2cd | Avi Kivity | return memory_region_read_thunk_n(mr, addr, 2); |
813 | 093bc2cd | Avi Kivity | } |
814 | 093bc2cd | Avi Kivity | |
815 | 093bc2cd | Avi Kivity | static uint32_t memory_region_read_thunk_l(void *mr, target_phys_addr_t addr) |
816 | 093bc2cd | Avi Kivity | { |
817 | 093bc2cd | Avi Kivity | return memory_region_read_thunk_n(mr, addr, 4); |
818 | 093bc2cd | Avi Kivity | } |
819 | 093bc2cd | Avi Kivity | |
820 | 093bc2cd | Avi Kivity | static void memory_region_write_thunk_b(void *mr, target_phys_addr_t addr, |
821 | 093bc2cd | Avi Kivity | uint32_t data) |
822 | 093bc2cd | Avi Kivity | { |
823 | 093bc2cd | Avi Kivity | memory_region_write_thunk_n(mr, addr, 1, data);
|
824 | 093bc2cd | Avi Kivity | } |
825 | 093bc2cd | Avi Kivity | |
826 | 093bc2cd | Avi Kivity | static void memory_region_write_thunk_w(void *mr, target_phys_addr_t addr, |
827 | 093bc2cd | Avi Kivity | uint32_t data) |
828 | 093bc2cd | Avi Kivity | { |
829 | 093bc2cd | Avi Kivity | memory_region_write_thunk_n(mr, addr, 2, data);
|
830 | 093bc2cd | Avi Kivity | } |
831 | 093bc2cd | Avi Kivity | |
832 | 093bc2cd | Avi Kivity | static void memory_region_write_thunk_l(void *mr, target_phys_addr_t addr, |
833 | 093bc2cd | Avi Kivity | uint32_t data) |
834 | 093bc2cd | Avi Kivity | { |
835 | 093bc2cd | Avi Kivity | memory_region_write_thunk_n(mr, addr, 4, data);
|
836 | 093bc2cd | Avi Kivity | } |
837 | 093bc2cd | Avi Kivity | |
838 | 093bc2cd | Avi Kivity | static CPUReadMemoryFunc * const memory_region_read_thunk[] = { |
839 | 093bc2cd | Avi Kivity | memory_region_read_thunk_b, |
840 | 093bc2cd | Avi Kivity | memory_region_read_thunk_w, |
841 | 093bc2cd | Avi Kivity | memory_region_read_thunk_l, |
842 | 093bc2cd | Avi Kivity | }; |
843 | 093bc2cd | Avi Kivity | |
844 | 093bc2cd | Avi Kivity | static CPUWriteMemoryFunc * const memory_region_write_thunk[] = { |
845 | 093bc2cd | Avi Kivity | memory_region_write_thunk_b, |
846 | 093bc2cd | Avi Kivity | memory_region_write_thunk_w, |
847 | 093bc2cd | Avi Kivity | memory_region_write_thunk_l, |
848 | 093bc2cd | Avi Kivity | }; |
849 | 093bc2cd | Avi Kivity | |
850 | 16ef61c9 | Avi Kivity | static void memory_region_prepare_ram_addr(MemoryRegion *mr) |
851 | 16ef61c9 | Avi Kivity | { |
852 | 16ef61c9 | Avi Kivity | if (mr->backend_registered) {
|
853 | 16ef61c9 | Avi Kivity | return;
|
854 | 16ef61c9 | Avi Kivity | } |
855 | 16ef61c9 | Avi Kivity | |
856 | 545e92e0 | Avi Kivity | mr->destructor = memory_region_destructor_iomem; |
857 | 16ef61c9 | Avi Kivity | mr->ram_addr = cpu_register_io_memory(memory_region_read_thunk, |
858 | 16ef61c9 | Avi Kivity | memory_region_write_thunk, |
859 | 16ef61c9 | Avi Kivity | mr, |
860 | 16ef61c9 | Avi Kivity | mr->ops->endianness); |
861 | 16ef61c9 | Avi Kivity | mr->backend_registered = true;
|
862 | 16ef61c9 | Avi Kivity | } |
863 | 16ef61c9 | Avi Kivity | |
864 | 093bc2cd | Avi Kivity | void memory_region_init_io(MemoryRegion *mr,
|
865 | 093bc2cd | Avi Kivity | const MemoryRegionOps *ops,
|
866 | 093bc2cd | Avi Kivity | void *opaque,
|
867 | 093bc2cd | Avi Kivity | const char *name, |
868 | 093bc2cd | Avi Kivity | uint64_t size) |
869 | 093bc2cd | Avi Kivity | { |
870 | 093bc2cd | Avi Kivity | memory_region_init(mr, name, size); |
871 | 093bc2cd | Avi Kivity | mr->ops = ops; |
872 | 093bc2cd | Avi Kivity | mr->opaque = opaque; |
873 | 14a3c10a | Avi Kivity | mr->terminates = true;
|
874 | 16ef61c9 | Avi Kivity | mr->backend_registered = false;
|
875 | 093bc2cd | Avi Kivity | } |
876 | 093bc2cd | Avi Kivity | |
877 | 093bc2cd | Avi Kivity | void memory_region_init_ram(MemoryRegion *mr,
|
878 | 093bc2cd | Avi Kivity | DeviceState *dev, |
879 | 093bc2cd | Avi Kivity | const char *name, |
880 | 093bc2cd | Avi Kivity | uint64_t size) |
881 | 093bc2cd | Avi Kivity | { |
882 | 093bc2cd | Avi Kivity | memory_region_init(mr, name, size); |
883 | 14a3c10a | Avi Kivity | mr->terminates = true;
|
884 | 545e92e0 | Avi Kivity | mr->destructor = memory_region_destructor_ram; |
885 | 093bc2cd | Avi Kivity | mr->ram_addr = qemu_ram_alloc(dev, name, size); |
886 | 16ef61c9 | Avi Kivity | mr->backend_registered = true;
|
887 | 093bc2cd | Avi Kivity | } |
888 | 093bc2cd | Avi Kivity | |
889 | 093bc2cd | Avi Kivity | void memory_region_init_ram_ptr(MemoryRegion *mr,
|
890 | 093bc2cd | Avi Kivity | DeviceState *dev, |
891 | 093bc2cd | Avi Kivity | const char *name, |
892 | 093bc2cd | Avi Kivity | uint64_t size, |
893 | 093bc2cd | Avi Kivity | void *ptr)
|
894 | 093bc2cd | Avi Kivity | { |
895 | 093bc2cd | Avi Kivity | memory_region_init(mr, name, size); |
896 | 14a3c10a | Avi Kivity | mr->terminates = true;
|
897 | 545e92e0 | Avi Kivity | mr->destructor = memory_region_destructor_ram_from_ptr; |
898 | 093bc2cd | Avi Kivity | mr->ram_addr = qemu_ram_alloc_from_ptr(dev, name, size, ptr); |
899 | 16ef61c9 | Avi Kivity | mr->backend_registered = true;
|
900 | 093bc2cd | Avi Kivity | } |
901 | 093bc2cd | Avi Kivity | |
902 | 093bc2cd | Avi Kivity | void memory_region_init_alias(MemoryRegion *mr,
|
903 | 093bc2cd | Avi Kivity | const char *name, |
904 | 093bc2cd | Avi Kivity | MemoryRegion *orig, |
905 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
906 | 093bc2cd | Avi Kivity | uint64_t size) |
907 | 093bc2cd | Avi Kivity | { |
908 | 093bc2cd | Avi Kivity | memory_region_init(mr, name, size); |
909 | 093bc2cd | Avi Kivity | mr->alias = orig; |
910 | 093bc2cd | Avi Kivity | mr->alias_offset = offset; |
911 | 093bc2cd | Avi Kivity | } |
912 | 093bc2cd | Avi Kivity | |
913 | 093bc2cd | Avi Kivity | void memory_region_destroy(MemoryRegion *mr)
|
914 | 093bc2cd | Avi Kivity | { |
915 | 093bc2cd | Avi Kivity | assert(QTAILQ_EMPTY(&mr->subregions)); |
916 | 545e92e0 | Avi Kivity | mr->destructor(mr); |
917 | 093bc2cd | Avi Kivity | memory_region_clear_coalescing(mr); |
918 | 093bc2cd | Avi Kivity | qemu_free((char *)mr->name);
|
919 | 3e9d69e7 | Avi Kivity | qemu_free(mr->ioeventfds); |
920 | 093bc2cd | Avi Kivity | } |
921 | 093bc2cd | Avi Kivity | |
922 | 093bc2cd | Avi Kivity | uint64_t memory_region_size(MemoryRegion *mr) |
923 | 093bc2cd | Avi Kivity | { |
924 | 093bc2cd | Avi Kivity | return mr->size;
|
925 | 093bc2cd | Avi Kivity | } |
926 | 093bc2cd | Avi Kivity | |
927 | 093bc2cd | Avi Kivity | void memory_region_set_offset(MemoryRegion *mr, target_phys_addr_t offset)
|
928 | 093bc2cd | Avi Kivity | { |
929 | 093bc2cd | Avi Kivity | mr->offset = offset; |
930 | 093bc2cd | Avi Kivity | } |
931 | 093bc2cd | Avi Kivity | |
932 | 093bc2cd | Avi Kivity | void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) |
933 | 093bc2cd | Avi Kivity | { |
934 | 5a583347 | Avi Kivity | uint8_t mask = 1 << client;
|
935 | 5a583347 | Avi Kivity | |
936 | 5a583347 | Avi Kivity | mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask); |
937 | 5a583347 | Avi Kivity | memory_region_update_topology(); |
938 | 093bc2cd | Avi Kivity | } |
939 | 093bc2cd | Avi Kivity | |
940 | 093bc2cd | Avi Kivity | bool memory_region_get_dirty(MemoryRegion *mr, target_phys_addr_t addr,
|
941 | 093bc2cd | Avi Kivity | unsigned client)
|
942 | 093bc2cd | Avi Kivity | { |
943 | 14a3c10a | Avi Kivity | assert(mr->terminates); |
944 | 5a583347 | Avi Kivity | return cpu_physical_memory_get_dirty(mr->ram_addr + addr, 1 << client); |
945 | 093bc2cd | Avi Kivity | } |
946 | 093bc2cd | Avi Kivity | |
947 | 093bc2cd | Avi Kivity | void memory_region_set_dirty(MemoryRegion *mr, target_phys_addr_t addr)
|
948 | 093bc2cd | Avi Kivity | { |
949 | 14a3c10a | Avi Kivity | assert(mr->terminates); |
950 | 5a583347 | Avi Kivity | return cpu_physical_memory_set_dirty(mr->ram_addr + addr);
|
951 | 093bc2cd | Avi Kivity | } |
952 | 093bc2cd | Avi Kivity | |
953 | 093bc2cd | Avi Kivity | void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
|
954 | 093bc2cd | Avi Kivity | { |
955 | 5a583347 | Avi Kivity | FlatRange *fr; |
956 | 5a583347 | Avi Kivity | |
957 | cc31e6e7 | Avi Kivity | FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) { |
958 | 5a583347 | Avi Kivity | if (fr->mr == mr) {
|
959 | 5a583347 | Avi Kivity | cpu_physical_sync_dirty_bitmap(fr->addr.start, |
960 | 5a583347 | Avi Kivity | fr->addr.start + fr->addr.size); |
961 | 5a583347 | Avi Kivity | } |
962 | 5a583347 | Avi Kivity | } |
963 | 093bc2cd | Avi Kivity | } |
964 | 093bc2cd | Avi Kivity | |
965 | 093bc2cd | Avi Kivity | void memory_region_set_readonly(MemoryRegion *mr, bool readonly) |
966 | 093bc2cd | Avi Kivity | { |
967 | 093bc2cd | Avi Kivity | /* FIXME */
|
968 | 093bc2cd | Avi Kivity | } |
969 | 093bc2cd | Avi Kivity | |
970 | 093bc2cd | Avi Kivity | void memory_region_reset_dirty(MemoryRegion *mr, target_phys_addr_t addr,
|
971 | 093bc2cd | Avi Kivity | target_phys_addr_t size, unsigned client)
|
972 | 093bc2cd | Avi Kivity | { |
973 | 14a3c10a | Avi Kivity | assert(mr->terminates); |
974 | 5a583347 | Avi Kivity | cpu_physical_memory_reset_dirty(mr->ram_addr + addr, |
975 | 5a583347 | Avi Kivity | mr->ram_addr + addr + size, |
976 | 5a583347 | Avi Kivity | 1 << client);
|
977 | 093bc2cd | Avi Kivity | } |
978 | 093bc2cd | Avi Kivity | |
979 | 093bc2cd | Avi Kivity | void *memory_region_get_ram_ptr(MemoryRegion *mr)
|
980 | 093bc2cd | Avi Kivity | { |
981 | 093bc2cd | Avi Kivity | if (mr->alias) {
|
982 | 093bc2cd | Avi Kivity | return memory_region_get_ram_ptr(mr->alias) + mr->alias_offset;
|
983 | 093bc2cd | Avi Kivity | } |
984 | 093bc2cd | Avi Kivity | |
985 | 14a3c10a | Avi Kivity | assert(mr->terminates); |
986 | 093bc2cd | Avi Kivity | |
987 | 093bc2cd | Avi Kivity | return qemu_get_ram_ptr(mr->ram_addr);
|
988 | 093bc2cd | Avi Kivity | } |
989 | 093bc2cd | Avi Kivity | |
990 | 093bc2cd | Avi Kivity | static void memory_region_update_coalesced_range(MemoryRegion *mr) |
991 | 093bc2cd | Avi Kivity | { |
992 | 093bc2cd | Avi Kivity | FlatRange *fr; |
993 | 093bc2cd | Avi Kivity | CoalescedMemoryRange *cmr; |
994 | 093bc2cd | Avi Kivity | AddrRange tmp; |
995 | 093bc2cd | Avi Kivity | |
996 | cc31e6e7 | Avi Kivity | FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) { |
997 | 093bc2cd | Avi Kivity | if (fr->mr == mr) {
|
998 | 093bc2cd | Avi Kivity | qemu_unregister_coalesced_mmio(fr->addr.start, fr->addr.size); |
999 | 093bc2cd | Avi Kivity | QTAILQ_FOREACH(cmr, &mr->coalesced, link) { |
1000 | 093bc2cd | Avi Kivity | tmp = addrrange_shift(cmr->addr, |
1001 | 093bc2cd | Avi Kivity | fr->addr.start - fr->offset_in_region); |
1002 | 093bc2cd | Avi Kivity | if (!addrrange_intersects(tmp, fr->addr)) {
|
1003 | 093bc2cd | Avi Kivity | continue;
|
1004 | 093bc2cd | Avi Kivity | } |
1005 | 093bc2cd | Avi Kivity | tmp = addrrange_intersection(tmp, fr->addr); |
1006 | 093bc2cd | Avi Kivity | qemu_register_coalesced_mmio(tmp.start, tmp.size); |
1007 | 093bc2cd | Avi Kivity | } |
1008 | 093bc2cd | Avi Kivity | } |
1009 | 093bc2cd | Avi Kivity | } |
1010 | 093bc2cd | Avi Kivity | } |
1011 | 093bc2cd | Avi Kivity | |
1012 | 093bc2cd | Avi Kivity | void memory_region_set_coalescing(MemoryRegion *mr)
|
1013 | 093bc2cd | Avi Kivity | { |
1014 | 093bc2cd | Avi Kivity | memory_region_clear_coalescing(mr); |
1015 | 093bc2cd | Avi Kivity | memory_region_add_coalescing(mr, 0, mr->size);
|
1016 | 093bc2cd | Avi Kivity | } |
1017 | 093bc2cd | Avi Kivity | |
1018 | 093bc2cd | Avi Kivity | void memory_region_add_coalescing(MemoryRegion *mr,
|
1019 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
1020 | 093bc2cd | Avi Kivity | uint64_t size) |
1021 | 093bc2cd | Avi Kivity | { |
1022 | 093bc2cd | Avi Kivity | CoalescedMemoryRange *cmr = qemu_malloc(sizeof(*cmr));
|
1023 | 093bc2cd | Avi Kivity | |
1024 | 093bc2cd | Avi Kivity | cmr->addr = addrrange_make(offset, size); |
1025 | 093bc2cd | Avi Kivity | QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link); |
1026 | 093bc2cd | Avi Kivity | memory_region_update_coalesced_range(mr); |
1027 | 093bc2cd | Avi Kivity | } |
1028 | 093bc2cd | Avi Kivity | |
1029 | 093bc2cd | Avi Kivity | void memory_region_clear_coalescing(MemoryRegion *mr)
|
1030 | 093bc2cd | Avi Kivity | { |
1031 | 093bc2cd | Avi Kivity | CoalescedMemoryRange *cmr; |
1032 | 093bc2cd | Avi Kivity | |
1033 | 093bc2cd | Avi Kivity | while (!QTAILQ_EMPTY(&mr->coalesced)) {
|
1034 | 093bc2cd | Avi Kivity | cmr = QTAILQ_FIRST(&mr->coalesced); |
1035 | 093bc2cd | Avi Kivity | QTAILQ_REMOVE(&mr->coalesced, cmr, link); |
1036 | 093bc2cd | Avi Kivity | qemu_free(cmr); |
1037 | 093bc2cd | Avi Kivity | } |
1038 | 093bc2cd | Avi Kivity | memory_region_update_coalesced_range(mr); |
1039 | 093bc2cd | Avi Kivity | } |
1040 | 093bc2cd | Avi Kivity | |
1041 | 3e9d69e7 | Avi Kivity | void memory_region_add_eventfd(MemoryRegion *mr,
|
1042 | 3e9d69e7 | Avi Kivity | target_phys_addr_t addr, |
1043 | 3e9d69e7 | Avi Kivity | unsigned size,
|
1044 | 3e9d69e7 | Avi Kivity | bool match_data,
|
1045 | 3e9d69e7 | Avi Kivity | uint64_t data, |
1046 | 3e9d69e7 | Avi Kivity | int fd)
|
1047 | 3e9d69e7 | Avi Kivity | { |
1048 | 3e9d69e7 | Avi Kivity | MemoryRegionIoeventfd mrfd = { |
1049 | 3e9d69e7 | Avi Kivity | .addr.start = addr, |
1050 | 3e9d69e7 | Avi Kivity | .addr.size = size, |
1051 | 3e9d69e7 | Avi Kivity | .match_data = match_data, |
1052 | 3e9d69e7 | Avi Kivity | .data = data, |
1053 | 3e9d69e7 | Avi Kivity | .fd = fd, |
1054 | 3e9d69e7 | Avi Kivity | }; |
1055 | 3e9d69e7 | Avi Kivity | unsigned i;
|
1056 | 3e9d69e7 | Avi Kivity | |
1057 | 3e9d69e7 | Avi Kivity | for (i = 0; i < mr->ioeventfd_nb; ++i) { |
1058 | 3e9d69e7 | Avi Kivity | if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) {
|
1059 | 3e9d69e7 | Avi Kivity | break;
|
1060 | 3e9d69e7 | Avi Kivity | } |
1061 | 3e9d69e7 | Avi Kivity | } |
1062 | 3e9d69e7 | Avi Kivity | ++mr->ioeventfd_nb; |
1063 | 3e9d69e7 | Avi Kivity | mr->ioeventfds = qemu_realloc(mr->ioeventfds, |
1064 | 3e9d69e7 | Avi Kivity | sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
|
1065 | 3e9d69e7 | Avi Kivity | memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
|
1066 | 3e9d69e7 | Avi Kivity | sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i)); |
1067 | 3e9d69e7 | Avi Kivity | mr->ioeventfds[i] = mrfd; |
1068 | 3e9d69e7 | Avi Kivity | memory_region_update_topology(); |
1069 | 3e9d69e7 | Avi Kivity | } |
1070 | 3e9d69e7 | Avi Kivity | |
1071 | 3e9d69e7 | Avi Kivity | void memory_region_del_eventfd(MemoryRegion *mr,
|
1072 | 3e9d69e7 | Avi Kivity | target_phys_addr_t addr, |
1073 | 3e9d69e7 | Avi Kivity | unsigned size,
|
1074 | 3e9d69e7 | Avi Kivity | bool match_data,
|
1075 | 3e9d69e7 | Avi Kivity | uint64_t data, |
1076 | 3e9d69e7 | Avi Kivity | int fd)
|
1077 | 3e9d69e7 | Avi Kivity | { |
1078 | 3e9d69e7 | Avi Kivity | MemoryRegionIoeventfd mrfd = { |
1079 | 3e9d69e7 | Avi Kivity | .addr.start = addr, |
1080 | 3e9d69e7 | Avi Kivity | .addr.size = size, |
1081 | 3e9d69e7 | Avi Kivity | .match_data = match_data, |
1082 | 3e9d69e7 | Avi Kivity | .data = data, |
1083 | 3e9d69e7 | Avi Kivity | .fd = fd, |
1084 | 3e9d69e7 | Avi Kivity | }; |
1085 | 3e9d69e7 | Avi Kivity | unsigned i;
|
1086 | 3e9d69e7 | Avi Kivity | |
1087 | 3e9d69e7 | Avi Kivity | for (i = 0; i < mr->ioeventfd_nb; ++i) { |
1088 | 3e9d69e7 | Avi Kivity | if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) {
|
1089 | 3e9d69e7 | Avi Kivity | break;
|
1090 | 3e9d69e7 | Avi Kivity | } |
1091 | 3e9d69e7 | Avi Kivity | } |
1092 | 3e9d69e7 | Avi Kivity | assert(i != mr->ioeventfd_nb); |
1093 | 3e9d69e7 | Avi Kivity | memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
|
1094 | 3e9d69e7 | Avi Kivity | sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1))); |
1095 | 3e9d69e7 | Avi Kivity | --mr->ioeventfd_nb; |
1096 | 3e9d69e7 | Avi Kivity | mr->ioeventfds = qemu_realloc(mr->ioeventfds, |
1097 | 3e9d69e7 | Avi Kivity | sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1); |
1098 | 3e9d69e7 | Avi Kivity | memory_region_update_topology(); |
1099 | 3e9d69e7 | Avi Kivity | } |
1100 | 3e9d69e7 | Avi Kivity | |
1101 | 093bc2cd | Avi Kivity | static void memory_region_add_subregion_common(MemoryRegion *mr, |
1102 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
1103 | 093bc2cd | Avi Kivity | MemoryRegion *subregion) |
1104 | 093bc2cd | Avi Kivity | { |
1105 | 093bc2cd | Avi Kivity | MemoryRegion *other; |
1106 | 093bc2cd | Avi Kivity | |
1107 | 093bc2cd | Avi Kivity | assert(!subregion->parent); |
1108 | 093bc2cd | Avi Kivity | subregion->parent = mr; |
1109 | 093bc2cd | Avi Kivity | subregion->addr = offset; |
1110 | 093bc2cd | Avi Kivity | QTAILQ_FOREACH(other, &mr->subregions, subregions_link) { |
1111 | 093bc2cd | Avi Kivity | if (subregion->may_overlap || other->may_overlap) {
|
1112 | 093bc2cd | Avi Kivity | continue;
|
1113 | 093bc2cd | Avi Kivity | } |
1114 | 093bc2cd | Avi Kivity | if (offset >= other->offset + other->size
|
1115 | 093bc2cd | Avi Kivity | || offset + subregion->size <= other->offset) { |
1116 | 093bc2cd | Avi Kivity | continue;
|
1117 | 093bc2cd | Avi Kivity | } |
1118 | 093bc2cd | Avi Kivity | printf("warning: subregion collision %llx/%llx vs %llx/%llx\n",
|
1119 | 093bc2cd | Avi Kivity | (unsigned long long)offset, |
1120 | 093bc2cd | Avi Kivity | (unsigned long long)subregion->size, |
1121 | 093bc2cd | Avi Kivity | (unsigned long long)other->offset, |
1122 | 093bc2cd | Avi Kivity | (unsigned long long)other->size); |
1123 | 093bc2cd | Avi Kivity | } |
1124 | 093bc2cd | Avi Kivity | QTAILQ_FOREACH(other, &mr->subregions, subregions_link) { |
1125 | 093bc2cd | Avi Kivity | if (subregion->priority >= other->priority) {
|
1126 | 093bc2cd | Avi Kivity | QTAILQ_INSERT_BEFORE(other, subregion, subregions_link); |
1127 | 093bc2cd | Avi Kivity | goto done;
|
1128 | 093bc2cd | Avi Kivity | } |
1129 | 093bc2cd | Avi Kivity | } |
1130 | 093bc2cd | Avi Kivity | QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link); |
1131 | 093bc2cd | Avi Kivity | done:
|
1132 | 093bc2cd | Avi Kivity | memory_region_update_topology(); |
1133 | 093bc2cd | Avi Kivity | } |
1134 | 093bc2cd | Avi Kivity | |
1135 | 093bc2cd | Avi Kivity | |
1136 | 093bc2cd | Avi Kivity | void memory_region_add_subregion(MemoryRegion *mr,
|
1137 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
1138 | 093bc2cd | Avi Kivity | MemoryRegion *subregion) |
1139 | 093bc2cd | Avi Kivity | { |
1140 | 093bc2cd | Avi Kivity | subregion->may_overlap = false;
|
1141 | 093bc2cd | Avi Kivity | subregion->priority = 0;
|
1142 | 093bc2cd | Avi Kivity | memory_region_add_subregion_common(mr, offset, subregion); |
1143 | 093bc2cd | Avi Kivity | } |
1144 | 093bc2cd | Avi Kivity | |
1145 | 093bc2cd | Avi Kivity | void memory_region_add_subregion_overlap(MemoryRegion *mr,
|
1146 | 093bc2cd | Avi Kivity | target_phys_addr_t offset, |
1147 | 093bc2cd | Avi Kivity | MemoryRegion *subregion, |
1148 | 093bc2cd | Avi Kivity | unsigned priority)
|
1149 | 093bc2cd | Avi Kivity | { |
1150 | 093bc2cd | Avi Kivity | subregion->may_overlap = true;
|
1151 | 093bc2cd | Avi Kivity | subregion->priority = priority; |
1152 | 093bc2cd | Avi Kivity | memory_region_add_subregion_common(mr, offset, subregion); |
1153 | 093bc2cd | Avi Kivity | } |
1154 | 093bc2cd | Avi Kivity | |
1155 | 093bc2cd | Avi Kivity | void memory_region_del_subregion(MemoryRegion *mr,
|
1156 | 093bc2cd | Avi Kivity | MemoryRegion *subregion) |
1157 | 093bc2cd | Avi Kivity | { |
1158 | 093bc2cd | Avi Kivity | assert(subregion->parent == mr); |
1159 | 093bc2cd | Avi Kivity | subregion->parent = NULL;
|
1160 | 093bc2cd | Avi Kivity | QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link); |
1161 | 093bc2cd | Avi Kivity | memory_region_update_topology(); |
1162 | 093bc2cd | Avi Kivity | } |
1163 | 1c0ffa58 | Avi Kivity | |
1164 | 1c0ffa58 | Avi Kivity | void set_system_memory_map(MemoryRegion *mr)
|
1165 | 1c0ffa58 | Avi Kivity | { |
1166 | cc31e6e7 | Avi Kivity | address_space_memory.root = mr; |
1167 | 1c0ffa58 | Avi Kivity | memory_region_update_topology(); |
1168 | 1c0ffa58 | Avi Kivity | } |
1169 | 658b2224 | Avi Kivity | |
1170 | 658b2224 | Avi Kivity | void set_system_io_map(MemoryRegion *mr)
|
1171 | 658b2224 | Avi Kivity | { |
1172 | 658b2224 | Avi Kivity | address_space_io.root = mr; |
1173 | 658b2224 | Avi Kivity | memory_region_update_topology(); |
1174 | 658b2224 | Avi Kivity | } |