1 | /* |
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2 | * This program is free software; you can redistribute it and/or modify |
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3 | * it under the terms of the GNU General Public License as published by |
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4 | * the Free Software Foundation; either version 2 of the License, or |
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5 | * (at your option) any later version. |
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6 | * |
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7 | * This program is distributed in the hope that it will be useful, |
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8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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10 | * GNU General Public License for more details. |
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11 | * |
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12 | * You should have received a copy of the GNU General Public License |
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13 | * along with this program; if not, write to the Free Software |
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14 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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15 | * |
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16 | * Copyright (c) 2007 Isaku Yamahata <yamahata at valinux co jp> |
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17 | * VA Linux Systems Japan K.K. |
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18 | * |
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19 | */ |
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20 | |
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21 | #include "xg_private.h" |
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22 | #include "xc_core.h" |
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23 | #include "xc_efi.h" |
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24 | #include "xc_dom.h" |
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25 | #include <inttypes.h> |
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26 | |
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27 | static int |
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28 | xc_memory_map_cmp(const void *lhs__, const void *rhs__) |
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29 | { |
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30 | const struct xc_core_memory_map *lhs = |
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31 | (const struct xc_core_memory_map *)lhs__; |
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32 | const struct xc_core_memory_map *rhs = |
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33 | (const struct xc_core_memory_map *)rhs__; |
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34 | |
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35 | if (lhs->addr < rhs->addr) |
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36 | return -1; |
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37 | if (lhs->addr > rhs->addr) |
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38 | return 1; |
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39 | |
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40 | /* memory map overlap isn't allowed. complain */ |
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41 | DPRINTF("duplicated addresses are detected " |
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42 | "(0x%" PRIx64 ", 0x%" PRIx64 "), " |
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43 | "(0x%" PRIx64 ", 0x%" PRIx64 ")\n", |
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44 | lhs->addr, lhs->size, rhs->addr, rhs->size); |
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45 | return 0; |
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46 | } |
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47 | |
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48 | int |
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49 | xc_core_arch_auto_translated_physmap(const xc_dominfo_t *info) |
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50 | { |
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51 | /* |
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52 | * on ia64, both paravirtualize domain and hvm domain are |
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53 | * auto_translated_physmap mode |
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54 | */ |
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55 | return 1; |
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56 | } |
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57 | |
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58 | /* see setup_guest() @ xc_linux_build.c */ |
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59 | static int |
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60 | memory_map_get_old_domu(int xc_handle, xc_dominfo_t *info, |
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61 | shared_info_t *live_shinfo, |
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62 | xc_core_memory_map_t **mapp, unsigned int *nr_entries) |
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63 | { |
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64 | xc_core_memory_map_t *map = NULL; |
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65 | |
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66 | map = malloc(sizeof(*map)); |
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67 | if ( map == NULL ) |
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68 | { |
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69 | PERROR("Could not allocate memory"); |
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70 | goto out; |
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71 | } |
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72 | |
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73 | map->addr = 0; |
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74 | map->size = info->max_memkb * 1024; |
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75 | |
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76 | *mapp = map; |
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77 | *nr_entries = 1; |
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78 | return 0; |
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79 | |
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80 | out: |
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81 | if ( map != NULL ) |
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82 | free(map); |
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83 | return -1; |
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84 | } |
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85 | |
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86 | /* see setup_guest() @ xc_ia64_hvm_build.c */ |
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87 | static int |
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88 | memory_map_get_old_hvm(int xc_handle, xc_dominfo_t *info, |
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89 | shared_info_t *live_shinfo, |
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90 | xc_core_memory_map_t **mapp, unsigned int *nr_entries) |
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91 | { |
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92 | const xc_core_memory_map_t gfw_map[] = { |
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93 | {IO_PAGE_START, IO_PAGE_SIZE}, |
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94 | {STORE_PAGE_START, STORE_PAGE_SIZE}, |
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95 | {BUFFER_IO_PAGE_START, BUFFER_IO_PAGE_SIZE}, |
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96 | {BUFFER_PIO_PAGE_START, BUFFER_PIO_PAGE_SIZE}, |
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97 | {GFW_START, GFW_SIZE}, |
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98 | }; |
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99 | const unsigned int nr_gfw_map = sizeof(gfw_map)/sizeof(gfw_map[0]); |
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100 | xc_core_memory_map_t *map = NULL; |
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101 | unsigned int i; |
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102 | |
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103 | #define VGA_IO_END (VGA_IO_START + VGA_IO_SIZE) |
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104 | /* [0, VGA_IO_START) [VGA_IO_END, 3GB), [4GB, ...) + gfw_map */ |
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105 | map = malloc((3 + nr_gfw_map) * sizeof(*map)); |
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106 | if ( map == NULL ) |
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107 | { |
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108 | PERROR("Could not allocate memory"); |
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109 | goto out; |
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110 | } |
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111 | |
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112 | for ( i = 0; i < nr_gfw_map; i++ ) |
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113 | map[i] = gfw_map[i]; |
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114 | map[i].addr = 0; |
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115 | map[i].size = info->max_memkb * 1024; |
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116 | i++; |
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117 | if ( map[i - 1].size < VGA_IO_END ) |
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118 | { |
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119 | map[i - 1].size = VGA_IO_START; |
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120 | } |
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121 | else |
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122 | { |
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123 | map[i].addr = VGA_IO_END; |
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124 | map[i].size = map[i - 1].size - VGA_IO_END; |
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125 | map[i - 1].size = VGA_IO_START; |
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126 | i++; |
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127 | if ( map[i - 1].addr + map[i - 1].size > MMIO_START ) |
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128 | { |
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129 | map[i].addr = MMIO_START + 1 * MEM_G; |
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130 | map[i].size = map[i - 1].addr + map[i - 1].size - MMIO_START; |
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131 | map[i - 1].size = MMIO_START - map[i - 1].addr; |
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132 | i++; |
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133 | } |
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134 | } |
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135 | *mapp = map; |
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136 | *nr_entries = i; |
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137 | qsort(map, *nr_entries, sizeof(map[0]), &xc_memory_map_cmp); |
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138 | return 0; |
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139 | |
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140 | out: |
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141 | if ( map != NULL ) |
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142 | free(map); |
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143 | return -1; |
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144 | } |
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145 | |
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146 | static int |
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147 | memory_map_get_old(int xc_handle, xc_dominfo_t *info, |
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148 | shared_info_t *live_shinfo, |
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149 | xc_core_memory_map_t **mapp, unsigned int *nr_entries) |
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150 | { |
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151 | if ( info->hvm ) |
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152 | return memory_map_get_old_hvm(xc_handle, info, live_shinfo, |
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153 | mapp, nr_entries); |
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154 | if ( live_shinfo == NULL ) |
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155 | return -1; |
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156 | return memory_map_get_old_domu(xc_handle, info, live_shinfo, |
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157 | mapp, nr_entries); |
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158 | } |
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159 | |
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160 | int |
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161 | xc_core_arch_memory_map_get(int xc_handle, xc_dominfo_t *info, |
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162 | shared_info_t *live_shinfo, |
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163 | xc_core_memory_map_t **mapp, |
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164 | unsigned int *nr_entries) |
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165 | { |
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166 | #ifdef notyet |
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167 | int ret = -1; |
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168 | xen_ia64_memmap_info_t *memmap_info; |
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169 | xc_core_memory_map_t *map; |
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170 | char *start; |
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171 | char *end; |
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172 | char *p; |
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173 | efi_memory_desc_t *md; |
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174 | |
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175 | if ( live_shinfo == NULL || live_shinfo->arch.memmap_info_pfn == 0 ) |
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176 | goto old; |
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177 | |
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178 | memmap_info = xc_map_foreign_range(xc_handle, info->domid, |
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179 | PAGE_SIZE, PROT_READ, |
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180 | live_shinfo->arch.memmap_info_pfn); |
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181 | if ( memmap_info == NULL ) |
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182 | { |
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183 | PERROR("Could not map memmap info."); |
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184 | return -1; |
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185 | } |
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186 | if ( memmap_info->efi_memdesc_size != sizeof(*md) || |
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187 | (memmap_info->efi_memmap_size / memmap_info->efi_memdesc_size) == 0 || |
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188 | memmap_info->efi_memmap_size > PAGE_SIZE - sizeof(memmap_info) || |
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189 | memmap_info->efi_memdesc_version != EFI_MEMORY_DESCRIPTOR_VERSION ) |
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190 | { |
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191 | PERROR("unknown memmap header. defaulting to compat mode."); |
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192 | munmap(memmap_info, PAGE_SIZE); |
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193 | goto old; |
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194 | } |
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195 | |
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196 | *nr_entries = memmap_info->efi_memmap_size / memmap_info->efi_memdesc_size; |
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197 | map = malloc(*nr_entries * sizeof(*md)); |
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198 | if ( map == NULL ) |
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199 | { |
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200 | PERROR("Could not allocate memory for memmap."); |
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201 | goto out; |
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202 | } |
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203 | *mapp = map; |
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204 | |
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205 | *nr_entries = 0; |
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206 | start = (char*)&memmap_info->memdesc; |
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207 | end = start + memmap_info->efi_memmap_size; |
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208 | for ( p = start; p < end; p += memmap_info->efi_memdesc_size ) |
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209 | { |
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210 | md = (efi_memory_desc_t*)p; |
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211 | if ( md->type != EFI_CONVENTIONAL_MEMORY || |
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212 | md->attribute != EFI_MEMORY_WB || |
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213 | md->num_pages == 0 ) |
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214 | continue; |
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215 | |
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216 | map[*nr_entries].addr = md->phys_addr; |
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217 | map[*nr_entries].size = md->num_pages << EFI_PAGE_SHIFT; |
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218 | (*nr_entries)++; |
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219 | } |
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220 | ret = 0; |
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221 | out: |
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222 | munmap(memmap_info, PAGE_SIZE); |
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223 | qsort(map, *nr_entries, sizeof(map[0]), &xc_memory_map_cmp); |
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224 | return ret; |
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225 | |
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226 | old: |
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227 | #endif |
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228 | return memory_map_get_old(xc_handle, info, live_shinfo, mapp, nr_entries); |
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229 | } |
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230 | |
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231 | int |
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232 | xc_core_arch_map_p2m(int xc_handle, xc_dominfo_t *info, |
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233 | shared_info_t *live_shinfo, xen_pfn_t **live_p2m, |
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234 | unsigned long *pfnp) |
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235 | { |
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236 | /* |
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237 | * on ia64, both paravirtualize domain and hvm domain are |
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238 | * auto_translated_physmap mode |
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239 | */ |
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240 | errno = ENOSYS; |
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241 | return -1; |
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242 | } |
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243 | |
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244 | void |
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245 | xc_core_arch_context_init(struct xc_core_arch_context* arch_ctxt) |
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246 | { |
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247 | int i; |
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248 | |
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249 | arch_ctxt->mapped_regs_size = |
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250 | (XMAPPEDREGS_SIZE < PAGE_SIZE) ? PAGE_SIZE: XMAPPEDREGS_SIZE; |
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251 | arch_ctxt->nr_vcpus = 0; |
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252 | for ( i = 0; i < MAX_VIRT_CPUS; i++ ) |
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253 | arch_ctxt->mapped_regs[i] = NULL; |
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254 | } |
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255 | |
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256 | void |
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257 | xc_core_arch_context_free(struct xc_core_arch_context* arch_ctxt) |
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258 | { |
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259 | int i; |
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260 | for ( i = 0; i < arch_ctxt->nr_vcpus; i++ ) |
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261 | if ( arch_ctxt->mapped_regs[i] != NULL ) |
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262 | munmap(arch_ctxt->mapped_regs[i], arch_ctxt->mapped_regs_size); |
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263 | } |
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264 | |
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265 | int |
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266 | xc_core_arch_context_get(struct xc_core_arch_context* arch_ctxt, |
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267 | vcpu_guest_context_t* ctxt, |
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268 | int xc_handle, uint32_t domid) |
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269 | { |
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270 | mapped_regs_t* mapped_regs; |
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271 | if ( ctxt->privregs_pfn == INVALID_P2M_ENTRY ) |
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272 | { |
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273 | PERROR("Could not get mmapped privregs gmfn"); |
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274 | errno = ENOENT; |
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275 | return -1; |
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276 | } |
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277 | mapped_regs = xc_map_foreign_range(xc_handle, domid, |
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278 | arch_ctxt->mapped_regs_size, |
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279 | PROT_READ, ctxt->privregs_pfn); |
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280 | if ( mapped_regs == NULL ) |
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281 | { |
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282 | PERROR("Could not map mapped privregs"); |
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283 | return -1; |
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284 | } |
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285 | arch_ctxt->mapped_regs[arch_ctxt->nr_vcpus] = mapped_regs; |
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286 | arch_ctxt->nr_vcpus++; |
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287 | return 0; |
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288 | } |
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289 | |
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290 | int |
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291 | xc_core_arch_context_get_shdr(struct xc_core_arch_context *arch_ctxt, |
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292 | struct xc_core_section_headers *sheaders, |
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293 | struct xc_core_strtab *strtab, |
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294 | uint64_t *filesz, uint64_t offset) |
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295 | { |
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296 | int sts = -1; |
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297 | Elf64_Shdr *shdr; |
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298 | |
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299 | /* mmapped priv regs */ |
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300 | shdr = xc_core_shdr_get(sheaders); |
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301 | if ( shdr == NULL ) |
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302 | { |
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303 | PERROR("Could not get section header for .xen_ia64_mapped_regs"); |
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304 | return sts; |
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305 | } |
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306 | *filesz = arch_ctxt->mapped_regs_size * arch_ctxt->nr_vcpus; |
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307 | sts = xc_core_shdr_set(shdr, strtab, XEN_DUMPCORE_SEC_IA64_MAPPED_REGS, |
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308 | SHT_PROGBITS, offset, *filesz, |
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309 | __alignof__(*arch_ctxt->mapped_regs[0]), |
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310 | arch_ctxt->mapped_regs_size); |
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311 | return sts; |
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312 | } |
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313 | |
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314 | int |
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315 | xc_core_arch_context_dump(struct xc_core_arch_context* arch_ctxt, |
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316 | void* args, dumpcore_rtn_t dump_rtn) |
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317 | { |
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318 | int sts = 0; |
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319 | int i; |
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320 | |
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321 | /* ia64 mapped_regs: .xen_ia64_mapped_regs */ |
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322 | for ( i = 0; i < arch_ctxt->nr_vcpus; i++ ) |
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323 | { |
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324 | sts = dump_rtn(args, (char*)arch_ctxt->mapped_regs[i], |
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325 | arch_ctxt->mapped_regs_size); |
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326 | if ( sts != 0 ) |
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327 | break; |
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328 | } |
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329 | return sts; |
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330 | } |
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331 | |
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332 | /* |
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333 | * Local variables: |
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334 | * mode: C |
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335 | * c-set-style: "BSD" |
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336 | * c-basic-offset: 4 |
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337 | * tab-width: 4 |
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338 | * indent-tabs-mode: nil |
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339 | * End: |
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340 | */ |
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