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5564 | serge | 1 | /********************************************************** |
2 | * Copyright 1998-2014 VMware, Inc. All rights reserved. |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person |
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5 | * obtaining a copy of this software and associated documentation |
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6 | * files (the "Software"), to deal in the Software without |
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7 | * restriction, including without limitation the rights to use, copy, |
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8 | * modify, merge, publish, distribute, sublicense, and/or sell copies |
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9 | * of the Software, and to permit persons to whom the Software is |
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10 | * furnished to do so, subject to the following conditions: |
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11 | * |
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12 | * The above copyright notice and this permission notice shall be |
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13 | * included in all copies or substantial portions of the Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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18 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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19 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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20 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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21 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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22 | * SOFTWARE. |
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23 | * |
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24 | **********************************************************/ |
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25 | |||
26 | /* |
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27 | * svga_reg.h -- |
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28 | * |
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29 | * Virtual hardware definitions for the VMware SVGA II device. |
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30 | */ |
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31 | |||
32 | #ifndef _SVGA_REG_H_ |
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33 | #define _SVGA_REG_H_ |
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34 | |||
35 | #include "svga_types.h" |
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36 | |||
37 | /* |
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38 | * SVGA_REG_ENABLE bit definitions. |
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39 | */ |
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40 | typedef enum { |
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41 | SVGA_REG_ENABLE_DISABLE = 0, |
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42 | SVGA_REG_ENABLE_ENABLE = (1 << 0), |
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43 | SVGA_REG_ENABLE_HIDE = (1 << 1), |
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44 | } SvgaRegEnable; |
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45 | |||
46 | /* |
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47 | * Arbitrary and meaningless limits. Please ignore these when writing |
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48 | * new drivers. |
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49 | */ |
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50 | #define SVGA_MAX_WIDTH 2560 |
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51 | #define SVGA_MAX_HEIGHT 1600 |
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52 | #define SVGA_MAX_BITS_PER_PIXEL 32 |
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53 | #define SVGA_MAX_DEPTH 24 |
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54 | #define SVGA_MAX_DISPLAYS 10 |
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55 | |||
56 | /* |
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57 | * Legal values for the SVGA_REG_CURSOR_ON register in old-fashioned |
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58 | * cursor bypass mode. This is still supported, but no new guest |
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59 | * drivers should use it. |
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60 | */ |
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61 | #define SVGA_CURSOR_ON_HIDE 0x0 /* Must be 0 to maintain backward compatibility */ |
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62 | #define SVGA_CURSOR_ON_SHOW 0x1 /* Must be 1 to maintain backward compatibility */ |
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63 | #define SVGA_CURSOR_ON_REMOVE_FROM_FB 0x2 /* Remove the cursor from the framebuffer because we need to see what's under it */ |
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64 | #define SVGA_CURSOR_ON_RESTORE_TO_FB 0x3 /* Put the cursor back in the framebuffer so the user can see it */ |
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65 | |||
66 | /* |
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67 | * The maximum framebuffer size that can traced for e.g. guests in VESA mode. |
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68 | * The changeMap in the monitor is proportional to this number. Therefore, we'd |
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69 | * like to keep it as small as possible to reduce monitor overhead (using |
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70 | * SVGA_VRAM_MAX_SIZE for this increases the size of the shared area by over |
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71 | * 4k!). |
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72 | * |
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73 | * NB: For compatibility reasons, this value must be greater than 0xff0000. |
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74 | * See bug 335072. |
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75 | */ |
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76 | #define SVGA_FB_MAX_TRACEABLE_SIZE 0x1000000 |
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77 | |||
78 | #define SVGA_MAX_PSEUDOCOLOR_DEPTH 8 |
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79 | #define SVGA_MAX_PSEUDOCOLORS (1 << SVGA_MAX_PSEUDOCOLOR_DEPTH) |
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80 | #define SVGA_NUM_PALETTE_REGS (3 * SVGA_MAX_PSEUDOCOLORS) |
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81 | |||
82 | #define SVGA_MAGIC 0x900000UL |
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83 | #define SVGA_MAKE_ID(ver) (SVGA_MAGIC << 8 | (ver)) |
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84 | |||
85 | /* Version 2 let the address of the frame buffer be unsigned on Win32 */ |
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86 | #define SVGA_VERSION_2 2 |
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87 | #define SVGA_ID_2 SVGA_MAKE_ID(SVGA_VERSION_2) |
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88 | |||
89 | /* Version 1 has new registers starting with SVGA_REG_CAPABILITIES so |
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90 | PALETTE_BASE has moved */ |
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91 | #define SVGA_VERSION_1 1 |
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92 | #define SVGA_ID_1 SVGA_MAKE_ID(SVGA_VERSION_1) |
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93 | |||
94 | /* Version 0 is the initial version */ |
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95 | #define SVGA_VERSION_0 0 |
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96 | #define SVGA_ID_0 SVGA_MAKE_ID(SVGA_VERSION_0) |
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97 | |||
98 | /* "Invalid" value for all SVGA IDs. (Version ID, screen object ID, surface ID...) */ |
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99 | #define SVGA_ID_INVALID 0xFFFFFFFF |
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100 | |||
101 | /* Port offsets, relative to BAR0 */ |
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102 | #define SVGA_INDEX_PORT 0x0 |
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103 | #define SVGA_VALUE_PORT 0x1 |
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104 | #define SVGA_BIOS_PORT 0x2 |
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105 | #define SVGA_IRQSTATUS_PORT 0x8 |
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106 | |||
107 | /* |
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108 | * Interrupt source flags for IRQSTATUS_PORT and IRQMASK. |
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109 | * |
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110 | * Interrupts are only supported when the |
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111 | * SVGA_CAP_IRQMASK capability is present. |
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112 | */ |
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113 | #define SVGA_IRQFLAG_ANY_FENCE 0x1 /* Any fence was passed */ |
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114 | #define SVGA_IRQFLAG_FIFO_PROGRESS 0x2 /* Made forward progress in the FIFO */ |
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115 | #define SVGA_IRQFLAG_FENCE_GOAL 0x4 /* SVGA_FIFO_FENCE_GOAL reached */ |
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116 | #define SVGA_IRQFLAG_COMMAND_BUFFER 0x8 /* Command buffer completed */ |
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117 | #define SVGA_IRQFLAG_ERROR 0x10 /* Error while processing commands */ |
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118 | |||
119 | /* |
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120 | * Registers |
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121 | */ |
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122 | |||
123 | enum { |
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124 | SVGA_REG_ID = 0, |
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125 | SVGA_REG_ENABLE = 1, |
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126 | SVGA_REG_WIDTH = 2, |
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127 | SVGA_REG_HEIGHT = 3, |
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128 | SVGA_REG_MAX_WIDTH = 4, |
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129 | SVGA_REG_MAX_HEIGHT = 5, |
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130 | SVGA_REG_DEPTH = 6, |
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131 | SVGA_REG_BITS_PER_PIXEL = 7, /* Current bpp in the guest */ |
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132 | SVGA_REG_PSEUDOCOLOR = 8, |
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133 | SVGA_REG_RED_MASK = 9, |
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134 | SVGA_REG_GREEN_MASK = 10, |
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135 | SVGA_REG_BLUE_MASK = 11, |
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136 | SVGA_REG_BYTES_PER_LINE = 12, |
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137 | SVGA_REG_FB_START = 13, /* (Deprecated) */ |
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138 | SVGA_REG_FB_OFFSET = 14, |
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139 | SVGA_REG_VRAM_SIZE = 15, |
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140 | SVGA_REG_FB_SIZE = 16, |
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141 | |||
142 | /* ID 0 implementation only had the above registers, then the palette */ |
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143 | SVGA_REG_ID_0_TOP = 17, |
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144 | |||
145 | SVGA_REG_CAPABILITIES = 17, |
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146 | SVGA_REG_MEM_START = 18, /* (Deprecated) */ |
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147 | SVGA_REG_MEM_SIZE = 19, |
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148 | SVGA_REG_CONFIG_DONE = 20, /* Set when memory area configured */ |
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149 | SVGA_REG_SYNC = 21, /* See "FIFO Synchronization Registers" */ |
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150 | SVGA_REG_BUSY = 22, /* See "FIFO Synchronization Registers" */ |
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151 | SVGA_REG_GUEST_ID = 23, /* Set guest OS identifier */ |
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152 | SVGA_REG_CURSOR_ID = 24, /* (Deprecated) */ |
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153 | SVGA_REG_CURSOR_X = 25, /* (Deprecated) */ |
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154 | SVGA_REG_CURSOR_Y = 26, /* (Deprecated) */ |
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155 | SVGA_REG_CURSOR_ON = 27, /* (Deprecated) */ |
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156 | SVGA_REG_HOST_BITS_PER_PIXEL = 28, /* (Deprecated) */ |
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157 | SVGA_REG_SCRATCH_SIZE = 29, /* Number of scratch registers */ |
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158 | SVGA_REG_MEM_REGS = 30, /* Number of FIFO registers */ |
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159 | SVGA_REG_NUM_DISPLAYS = 31, /* (Deprecated) */ |
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160 | SVGA_REG_PITCHLOCK = 32, /* Fixed pitch for all modes */ |
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161 | SVGA_REG_IRQMASK = 33, /* Interrupt mask */ |
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162 | |||
163 | /* Legacy multi-monitor support */ |
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164 | SVGA_REG_NUM_GUEST_DISPLAYS = 34,/* Number of guest displays in X/Y direction */ |
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165 | SVGA_REG_DISPLAY_ID = 35, /* Display ID for the following display attributes */ |
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166 | SVGA_REG_DISPLAY_IS_PRIMARY = 36,/* Whether this is a primary display */ |
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167 | SVGA_REG_DISPLAY_POSITION_X = 37,/* The display position x */ |
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168 | SVGA_REG_DISPLAY_POSITION_Y = 38,/* The display position y */ |
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169 | SVGA_REG_DISPLAY_WIDTH = 39, /* The display's width */ |
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170 | SVGA_REG_DISPLAY_HEIGHT = 40, /* The display's height */ |
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171 | |||
172 | /* See "Guest memory regions" below. */ |
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173 | SVGA_REG_GMR_ID = 41, |
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174 | SVGA_REG_GMR_DESCRIPTOR = 42, |
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175 | SVGA_REG_GMR_MAX_IDS = 43, |
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176 | SVGA_REG_GMR_MAX_DESCRIPTOR_LENGTH = 44, |
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177 | |||
178 | SVGA_REG_TRACES = 45, /* Enable trace-based updates even when FIFO is on */ |
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179 | SVGA_REG_GMRS_MAX_PAGES = 46, /* Maximum number of 4KB pages for all GMRs */ |
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180 | SVGA_REG_MEMORY_SIZE = 47, /* Total dedicated device memory excluding FIFO */ |
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181 | SVGA_REG_COMMAND_LOW = 48, /* Lower 32 bits and submits commands */ |
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182 | SVGA_REG_COMMAND_HIGH = 49, /* Upper 32 bits of command buffer PA */ |
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183 | SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM = 50, /* Max primary memory */ |
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184 | SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB = 51, /* Suggested limit on mob mem */ |
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185 | SVGA_REG_DEV_CAP = 52, /* Write dev cap index, read value */ |
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186 | SVGA_REG_CMD_PREPEND_LOW = 53, |
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187 | SVGA_REG_iCMD_PREPEND_HIGH = 54, |
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188 | SVGA_REG_SCREENTARGET_MAX_WIDTH = 55, |
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189 | SVGA_REG_SCREENTARGET_MAX_HEIGHT = 56, |
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190 | SVGA_REG_MOB_MAX_SIZE = 57, |
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191 | SVGA_REG_TOP = 58, /* Must be 1 more than the last register */ |
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192 | |||
193 | SVGA_PALETTE_BASE = 1024, /* Base of SVGA color map */ |
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194 | /* Next 768 (== 256*3) registers exist for colormap */ |
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195 | SVGA_SCRATCH_BASE = SVGA_PALETTE_BASE + SVGA_NUM_PALETTE_REGS |
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196 | /* Base of scratch registers */ |
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197 | /* Next reg[SVGA_REG_SCRATCH_SIZE] registers exist for scratch usage: |
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198 | First 4 are reserved for VESA BIOS Extension; any remaining are for |
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199 | the use of the current SVGA driver. */ |
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200 | }; |
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201 | |||
202 | /* |
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203 | * Guest memory regions (GMRs): |
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204 | * |
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205 | * This is a new memory mapping feature available in SVGA devices |
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206 | * which have the SVGA_CAP_GMR bit set. Previously, there were two |
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207 | * fixed memory regions available with which to share data between the |
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208 | * device and the driver: the FIFO ('MEM') and the framebuffer. GMRs |
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209 | * are our name for an extensible way of providing arbitrary DMA |
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210 | * buffers for use between the driver and the SVGA device. They are a |
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211 | * new alternative to framebuffer memory, usable for both 2D and 3D |
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212 | * graphics operations. |
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213 | * |
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214 | * Since GMR mapping must be done synchronously with guest CPU |
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215 | * execution, we use a new pair of SVGA registers: |
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216 | * |
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217 | * SVGA_REG_GMR_ID -- |
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218 | * |
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219 | * Read/write. |
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220 | * This register holds the 32-bit ID (a small positive integer) |
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221 | * of a GMR to create, delete, or redefine. Writing this register |
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222 | * has no side-effects. |
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223 | * |
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224 | * SVGA_REG_GMR_DESCRIPTOR -- |
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225 | * |
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226 | * Write-only. |
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227 | * Writing this register will create, delete, or redefine the GMR |
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228 | * specified by the above ID register. If this register is zero, |
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229 | * the GMR is deleted. Any pointers into this GMR (including those |
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230 | * currently being processed by FIFO commands) will be |
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231 | * synchronously invalidated. |
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232 | * |
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233 | * If this register is nonzero, it must be the physical page |
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234 | * number (PPN) of a data structure which describes the physical |
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235 | * layout of the memory region this GMR should describe. The |
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236 | * descriptor structure will be read synchronously by the SVGA |
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237 | * device when this register is written. The descriptor need not |
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238 | * remain allocated for the lifetime of the GMR. |
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239 | * |
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240 | * The guest driver should write SVGA_REG_GMR_ID first, then |
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241 | * SVGA_REG_GMR_DESCRIPTOR. |
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242 | * |
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243 | * SVGA_REG_GMR_MAX_IDS -- |
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244 | * |
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245 | * Read-only. |
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246 | * The SVGA device may choose to support a maximum number of |
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247 | * user-defined GMR IDs. This register holds the number of supported |
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248 | * IDs. (The maximum supported ID plus 1) |
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249 | * |
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250 | * SVGA_REG_GMR_MAX_DESCRIPTOR_LENGTH -- |
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251 | * |
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252 | * Read-only. |
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253 | * The SVGA device may choose to put a limit on the total number |
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254 | * of SVGAGuestMemDescriptor structures it will read when defining |
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255 | * a single GMR. |
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256 | * |
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257 | * The descriptor structure is an array of SVGAGuestMemDescriptor |
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258 | * structures. Each structure may do one of three things: |
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259 | * |
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260 | * - Terminate the GMR descriptor list. |
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261 | * (ppn==0, numPages==0) |
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262 | * |
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263 | * - Add a PPN or range of PPNs to the GMR's virtual address space. |
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264 | * (ppn != 0, numPages != 0) |
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265 | * |
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266 | * - Provide the PPN of the next SVGAGuestMemDescriptor, in order to |
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267 | * support multi-page GMR descriptor tables without forcing the |
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268 | * driver to allocate physically contiguous memory. |
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269 | * (ppn != 0, numPages == 0) |
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270 | * |
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271 | * Note that each physical page of SVGAGuestMemDescriptor structures |
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272 | * can describe at least 2MB of guest memory. If the driver needs to |
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273 | * use more than one page of descriptor structures, it must use one of |
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274 | * its SVGAGuestMemDescriptors to point to an additional page. The |
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275 | * device will never automatically cross a page boundary. |
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276 | * |
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277 | * Once the driver has described a GMR, it is immediately available |
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278 | * for use via any FIFO command that uses an SVGAGuestPtr structure. |
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279 | * These pointers include a GMR identifier plus an offset into that |
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280 | * GMR. |
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281 | * |
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282 | * The driver must check the SVGA_CAP_GMR bit before using the GMR |
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283 | * registers. |
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284 | */ |
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285 | |||
286 | /* |
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287 | * Special GMR IDs, allowing SVGAGuestPtrs to point to framebuffer |
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288 | * memory as well. In the future, these IDs could even be used to |
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289 | * allow legacy memory regions to be redefined by the guest as GMRs. |
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290 | * |
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291 | * Using the guest framebuffer (GFB) at BAR1 for general purpose DMA |
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292 | * is being phased out. Please try to use user-defined GMRs whenever |
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293 | * possible. |
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294 | */ |
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295 | #define SVGA_GMR_NULL ((uint32) -1) |
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296 | #define SVGA_GMR_FRAMEBUFFER ((uint32) -2) // Guest Framebuffer (GFB) |
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297 | |||
298 | typedef |
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299 | struct SVGAGuestMemDescriptor { |
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300 | uint32 ppn; |
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301 | uint32 numPages; |
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302 | } SVGAGuestMemDescriptor; |
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303 | |||
304 | typedef |
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305 | struct SVGAGuestPtr { |
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306 | uint32 gmrId; |
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307 | uint32 offset; |
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308 | } SVGAGuestPtr; |
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309 | |||
310 | /* |
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311 | * Register based command buffers -- |
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312 | * |
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313 | * Provide an SVGA device interface that allows the guest to submit |
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314 | * command buffers to the SVGA device through an SVGA device register. |
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315 | * The metadata for each command buffer is contained in the |
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316 | * SVGACBHeader structure along with the return status codes. |
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317 | * |
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318 | * The SVGA device supports command buffers if |
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319 | * SVGA_CAP_COMMAND_BUFFERS is set in the device caps register. The |
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320 | * fifo must be enabled for command buffers to be submitted. |
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321 | * |
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322 | * Command buffers are submitted when the guest writing the 64 byte |
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323 | * aligned physical address into the SVGA_REG_COMMAND_LOW and |
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324 | * SVGA_REG_COMMAND_HIGH. SVGA_REG_COMMAND_HIGH contains the upper 32 |
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325 | * bits of the physical address. SVGA_REG_COMMAND_LOW contains the |
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326 | * lower 32 bits of the physical address, since the command buffer |
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327 | * headers are required to be 64 byte aligned the lower 6 bits are |
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328 | * used for the SVGACBContext value. Writing to SVGA_REG_COMMAND_LOW |
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329 | * submits the command buffer to the device and queues it for |
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330 | * execution. The SVGA device supports at least |
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331 | * SVGA_CB_MAX_QUEUED_PER_CONTEXT command buffers that can be queued |
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332 | * per context and if that limit is reached the device will write the |
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333 | * status SVGA_CB_STATUS_QUEUE_FULL to the status value of the command |
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334 | * buffer header synchronously and not raise any IRQs. |
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335 | * |
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336 | * It is invalid to submit a command buffer without a valid physical |
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337 | * address and results are undefined. |
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338 | * |
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339 | * The device guarantees that command buffers of size SVGA_CB_MAX_SIZE |
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340 | * will be supported. If a larger command buffer is submitted results |
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341 | * are unspecified and the device will either complete the command |
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342 | * buffer or return an error. |
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343 | * |
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344 | * The device guarantees that any individual command in a command |
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345 | * buffer can be up to SVGA_CB_MAX_COMMAND_SIZE in size which is |
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346 | * enough to fit a 64x64 color-cursor definition. If the command is |
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347 | * too large the device is allowed to process the command or return an |
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348 | * error. |
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349 | * |
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350 | * The device context is a special SVGACBContext that allows for |
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351 | * synchronous register like accesses with the flexibility of |
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352 | * commands. There is a different command set defined by |
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353 | * SVGADeviceContextCmdId. The commands in each command buffer is not |
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354 | * allowed to straddle physical pages. |
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355 | */ |
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356 | |||
357 | #define SVGA_CB_MAX_SIZE (512 * 1024) // 512 KB |
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358 | #define SVGA_CB_MAX_QUEUED_PER_CONTEXT 32 |
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359 | #define SVGA_CB_MAX_COMMAND_SIZE (32 * 1024) // 32 KB |
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360 | |||
361 | #define SVGA_CB_CONTEXT_MASK 0x3f |
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362 | typedef enum { |
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363 | SVGA_CB_CONTEXT_DEVICE = 0x3f, |
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364 | SVGA_CB_CONTEXT_0 = 0x0, |
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365 | SVGA_CB_CONTEXT_MAX = 0x1, |
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366 | } SVGACBContext; |
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367 | |||
368 | |||
369 | typedef enum { |
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370 | /* |
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371 | * The guest is supposed to write SVGA_CB_STATUS_NONE to the status |
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372 | * field before submitting the command buffer header, the host will |
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373 | * change the value when it is done with the command buffer. |
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374 | */ |
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375 | SVGA_CB_STATUS_NONE = 0, |
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376 | |||
377 | /* |
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378 | * Written by the host when a command buffer completes successfully. |
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379 | * The device raises an IRQ with SVGA_IRQFLAG_COMMAND_BUFFER unless |
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380 | * the SVGA_CB_FLAG_NO_IRQ flag is set. |
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381 | */ |
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382 | SVGA_CB_STATUS_COMPLETED = 1, |
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383 | |||
384 | /* |
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385 | * Written by the host synchronously with the command buffer |
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386 | * submission to indicate the command buffer was not submitted. No |
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387 | * IRQ is raised. |
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388 | */ |
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389 | SVGA_CB_STATUS_QUEUE_FULL = 2, |
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390 | |||
391 | /* |
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392 | * Written by the host when an error was detected parsing a command |
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393 | * in the command buffer, errorOffset is written to contain the |
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394 | * offset to the first byte of the failing command. The device |
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395 | * raises the IRQ with both SVGA_IRQFLAG_ERROR and |
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396 | * SVGA_IRQFLAG_COMMAND_BUFFER. Some of the commands may have been |
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397 | * processed. |
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398 | */ |
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399 | SVGA_CB_STATUS_COMMAND_ERROR = 3, |
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400 | |||
401 | /* |
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402 | * Written by the host if there is an error parsing the command |
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403 | * buffer header. The device raises the IRQ with both |
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404 | * SVGA_IRQFLAG_ERROR and SVGA_IRQFLAG_COMMAND_BUFFER. The device |
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405 | * did not processes any of the command buffer. |
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406 | */ |
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407 | SVGA_CB_STATUS_CB_HEADER_ERROR = 4, |
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408 | |||
409 | /* |
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410 | * Written by the host if the guest requested the host to preempt |
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411 | * the command buffer. The device will not raise any IRQs and the |
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412 | * command buffer was not processed. |
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413 | */ |
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414 | SVGA_CB_STATUS_PREEMPTED = 5, |
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415 | } SVGACBStatus; |
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416 | |||
417 | typedef enum { |
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418 | SVGA_CB_FLAG_NONE = 0, |
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419 | SVGA_CB_FLAG_NO_IRQ = 1 << 0, |
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420 | } SVGACBFlags; |
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421 | |||
422 | typedef |
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423 | struct { |
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424 | volatile SVGACBStatus status; |
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425 | volatile uint32 errorOffset; |
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426 | uint64 id; |
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427 | SVGACBFlags flags; |
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428 | uint32 length; |
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429 | union { |
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430 | PA pa; |
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431 | } ptr; |
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432 | uint32 mustBeZero[8]; |
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433 | } SVGACBHeader; |
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434 | |||
435 | typedef enum { |
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436 | SVGA_DC_CMD_NOP = 0, |
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437 | SVGA_DC_CMD_START_STOP_CONTEXT = 1, |
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438 | SVGA_DC_CMD_PREEMPT = 2, |
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439 | SVGA_DC_CMD_MAX = 3, |
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440 | SVGA_DC_CMD_FORCE_UINT = MAX_UINT32, |
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441 | } SVGADeviceContextCmdId; |
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442 | |||
443 | typedef struct { |
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444 | uint32 enable; |
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445 | SVGACBContext context; |
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446 | } SVGADCCmdStartStop; |
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447 | |||
448 | /* |
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449 | * SVGADCCmdPreempt -- |
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450 | * |
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451 | * This command allows the guest to request that all command buffers |
||
452 | * on the specified context be preempted that can be. After execution |
||
453 | * of this command all command buffers that were preempted will |
||
454 | * already have SVGA_CB_STATUS_PREEMPTED written into the status |
||
455 | * field. The device might still be processing a command buffer, |
||
456 | * assuming execution of it started before the preemption request was |
||
457 | * received. Specifying the ignoreIDZero flag to TRUE will cause the |
||
458 | * device to not preempt command buffers with the id field in the |
||
459 | * command buffer header set to zero. |
||
460 | */ |
||
461 | |||
462 | typedef struct { |
||
463 | SVGACBContext context; |
||
464 | uint32 ignoreIDZero; |
||
465 | } SVGADCCmdPreempt; |
||
466 | |||
467 | |||
468 | /* |
||
469 | * SVGAGMRImageFormat -- |
||
470 | * |
||
471 | * This is a packed representation of the source 2D image format |
||
472 | * for a GMR-to-screen blit. Currently it is defined as an encoding |
||
473 | * of the screen's color depth and bits-per-pixel, however, 16 bits |
||
474 | * are reserved for future use to identify other encodings (such as |
||
475 | * RGBA or higher-precision images). |
||
476 | * |
||
477 | * Currently supported formats: |
||
478 | * |
||
479 | * bpp depth Format Name |
||
480 | * --- ----- ----------- |
||
481 | * 32 24 32-bit BGRX |
||
482 | * 24 24 24-bit BGR |
||
483 | * 16 16 RGB 5-6-5 |
||
484 | * 16 15 RGB 5-5-5 |
||
485 | * |
||
486 | */ |
||
487 | |||
488 | typedef struct SVGAGMRImageFormat { |
||
489 | union { |
||
490 | struct { |
||
491 | uint32 bitsPerPixel : 8; |
||
492 | uint32 colorDepth : 8; |
||
493 | uint32 reserved : 16; // Must be zero |
||
494 | }; |
||
495 | |||
496 | uint32 value; |
||
497 | }; |
||
498 | } SVGAGMRImageFormat; |
||
499 | |||
500 | typedef |
||
501 | struct SVGAGuestImage { |
||
502 | SVGAGuestPtr ptr; |
||
503 | |||
504 | /* |
||
505 | * A note on interpretation of pitch: This value of pitch is the |
||
506 | * number of bytes between vertically adjacent image |
||
507 | * blocks. Normally this is the number of bytes between the first |
||
508 | * pixel of two adjacent scanlines. With compressed textures, |
||
509 | * however, this may represent the number of bytes between |
||
510 | * compression blocks rather than between rows of pixels. |
||
511 | * |
||
512 | * XXX: Compressed textures currently must be tightly packed in guest memory. |
||
513 | * |
||
514 | * If the image is 1-dimensional, pitch is ignored. |
||
515 | * |
||
516 | * If 'pitch' is zero, the SVGA3D device calculates a pitch value |
||
517 | * assuming each row of blocks is tightly packed. |
||
518 | */ |
||
519 | uint32 pitch; |
||
520 | } SVGAGuestImage; |
||
521 | |||
522 | /* |
||
523 | * SVGAColorBGRX -- |
||
524 | * |
||
525 | * A 24-bit color format (BGRX), which does not depend on the |
||
526 | * format of the legacy guest framebuffer (GFB) or the current |
||
527 | * GMRFB state. |
||
528 | */ |
||
529 | |||
530 | typedef struct SVGAColorBGRX { |
||
531 | union { |
||
532 | struct { |
||
533 | uint32 b : 8; |
||
534 | uint32 g : 8; |
||
535 | uint32 r : 8; |
||
536 | uint32 x : 8; // Unused |
||
537 | }; |
||
538 | |||
539 | uint32 value; |
||
540 | }; |
||
541 | } SVGAColorBGRX; |
||
542 | |||
543 | |||
544 | /* |
||
545 | * SVGASignedRect -- |
||
546 | * SVGASignedPoint -- |
||
547 | * |
||
548 | * Signed rectangle and point primitives. These are used by the new |
||
549 | * 2D primitives for drawing to Screen Objects, which can occupy a |
||
550 | * signed virtual coordinate space. |
||
551 | * |
||
552 | * SVGASignedRect specifies a half-open interval: the (left, top) |
||
553 | * pixel is part of the rectangle, but the (right, bottom) pixel is |
||
554 | * not. |
||
555 | */ |
||
556 | |||
557 | typedef |
||
558 | struct { |
||
559 | int32 left; |
||
560 | int32 top; |
||
561 | int32 right; |
||
562 | int32 bottom; |
||
563 | } SVGASignedRect; |
||
564 | |||
565 | typedef |
||
566 | struct { |
||
567 | int32 x; |
||
568 | int32 y; |
||
569 | } SVGASignedPoint; |
||
570 | |||
571 | |||
572 | /* |
||
573 | * SVGA Device Capabilities |
||
574 | * |
||
575 | * Note the holes in the bitfield. Missing bits have been deprecated, |
||
576 | * and must not be reused. Those capabilities will never be reported |
||
577 | * by new versions of the SVGA device. |
||
578 | * |
||
579 | * XXX: Add longer descriptions for each capability, including a list |
||
580 | * of the new features that each capability provides. |
||
581 | * |
||
582 | * SVGA_CAP_IRQMASK -- |
||
583 | * Provides device interrupts. Adds device register SVGA_REG_IRQMASK |
||
584 | * to set interrupt mask and direct I/O port SVGA_IRQSTATUS_PORT to |
||
585 | * set/clear pending interrupts. |
||
586 | * |
||
587 | * SVGA_CAP_GMR -- |
||
588 | * Provides synchronous mapping of guest memory regions (GMR). |
||
589 | * Adds device registers SVGA_REG_GMR_ID, SVGA_REG_GMR_DESCRIPTOR, |
||
590 | * SVGA_REG_GMR_MAX_IDS, and SVGA_REG_GMR_MAX_DESCRIPTOR_LENGTH. |
||
591 | * |
||
592 | * SVGA_CAP_TRACES -- |
||
593 | * Allows framebuffer trace-based updates even when FIFO is enabled. |
||
594 | * Adds device register SVGA_REG_TRACES. |
||
595 | * |
||
596 | * SVGA_CAP_GMR2 -- |
||
597 | * Provides asynchronous commands to define and remap guest memory |
||
598 | * regions. Adds device registers SVGA_REG_GMRS_MAX_PAGES and |
||
599 | * SVGA_REG_MEMORY_SIZE. |
||
600 | * |
||
601 | * SVGA_CAP_SCREEN_OBJECT_2 -- |
||
602 | * Allow screen object support, and require backing stores from the |
||
603 | * guest for each screen object. |
||
604 | * |
||
605 | * SVGA_CAP_COMMAND_BUFFERS -- |
||
606 | * Enable register based command buffer submission. |
||
607 | * |
||
608 | * SVGA_CAP_GBOBJECTS -- |
||
609 | * Enable guest-backed objects and surfaces. |
||
610 | * |
||
611 | */ |
||
612 | |||
613 | #define SVGA_CAP_NONE 0x00000000 |
||
614 | #define SVGA_CAP_RECT_COPY 0x00000002 |
||
615 | #define SVGA_CAP_CURSOR 0x00000020 |
||
616 | #define SVGA_CAP_CURSOR_BYPASS 0x00000040 // Legacy (Use Cursor Bypass 3 instead) |
||
617 | #define SVGA_CAP_CURSOR_BYPASS_2 0x00000080 // Legacy (Use Cursor Bypass 3 instead) |
||
618 | #define SVGA_CAP_8BIT_EMULATION 0x00000100 |
||
619 | #define SVGA_CAP_ALPHA_CURSOR 0x00000200 |
||
620 | #define SVGA_CAP_3D 0x00004000 |
||
621 | #define SVGA_CAP_EXTENDED_FIFO 0x00008000 |
||
622 | #define SVGA_CAP_MULTIMON 0x00010000 // Legacy multi-monitor support |
||
623 | #define SVGA_CAP_PITCHLOCK 0x00020000 |
||
624 | #define SVGA_CAP_IRQMASK 0x00040000 |
||
625 | #define SVGA_CAP_DISPLAY_TOPOLOGY 0x00080000 // Legacy multi-monitor support |
||
626 | #define SVGA_CAP_GMR 0x00100000 |
||
627 | #define SVGA_CAP_TRACES 0x00200000 |
||
628 | #define SVGA_CAP_GMR2 0x00400000 |
||
629 | #define SVGA_CAP_SCREEN_OBJECT_2 0x00800000 |
||
630 | #define SVGA_CAP_COMMAND_BUFFERS 0x01000000 |
||
631 | #define SVGA_CAP_DEAD1 0x02000000 |
||
632 | #define SVGA_CAP_CMD_BUFFERS_2 0x04000000 |
||
633 | #define SVGA_CAP_GBOBJECTS 0x08000000 |
||
634 | |||
635 | |||
636 | /* |
||
637 | * The Guest can optionally read some SVGA device capabilities through |
||
638 | * the backdoor with command BDOOR_CMD_GET_SVGA_CAPABILITIES before |
||
639 | * the SVGA device is initialized. The type of capability the guest |
||
640 | * is requesting from the SVGABackdoorCapType enum should be placed in |
||
641 | * the upper 16 bits of the backdoor command id (ECX). On success the |
||
642 | * the value of EBX will be set to BDOOR_MAGIC and EAX will be set to |
||
643 | * the requested capability. If the command is not supported then EBX |
||
644 | * will be left unchanged and EAX will be set to -1. Because it is |
||
645 | * possible that -1 is the value of the requested cap the correct way |
||
646 | * to check if the command was successful is to check if EBX was changed |
||
647 | * to BDOOR_MAGIC making sure to initialize the register to something |
||
648 | * else first. |
||
649 | */ |
||
650 | |||
651 | typedef enum { |
||
652 | SVGABackdoorCapDeviceCaps = 0, |
||
653 | SVGABackdoorCapFifoCaps = 1, |
||
654 | SVGABackdoorCap3dHWVersion = 2, |
||
655 | SVGABackdoorCapMax = 3, |
||
656 | } SVGABackdoorCapType; |
||
657 | |||
658 | |||
659 | /* |
||
660 | * FIFO register indices. |
||
661 | * |
||
662 | * The FIFO is a chunk of device memory mapped into guest physmem. It |
||
663 | * is always treated as 32-bit words. |
||
664 | * |
||
665 | * The guest driver gets to decide how to partition it between |
||
666 | * - FIFO registers (there are always at least 4, specifying where the |
||
667 | * following data area is and how much data it contains; there may be |
||
668 | * more registers following these, depending on the FIFO protocol |
||
669 | * version in use) |
||
670 | * - FIFO data, written by the guest and slurped out by the VMX. |
||
671 | * These indices are 32-bit word offsets into the FIFO. |
||
672 | */ |
||
673 | |||
674 | enum { |
||
675 | /* |
||
676 | * Block 1 (basic registers): The originally defined FIFO registers. |
||
677 | * These exist and are valid for all versions of the FIFO protocol. |
||
678 | */ |
||
679 | |||
680 | SVGA_FIFO_MIN = 0, |
||
681 | SVGA_FIFO_MAX, /* The distance from MIN to MAX must be at least 10K */ |
||
682 | SVGA_FIFO_NEXT_CMD, |
||
683 | SVGA_FIFO_STOP, |
||
684 | |||
685 | /* |
||
686 | * Block 2 (extended registers): Mandatory registers for the extended |
||
687 | * FIFO. These exist if the SVGA caps register includes |
||
688 | * SVGA_CAP_EXTENDED_FIFO; some of them are valid only if their |
||
689 | * associated capability bit is enabled. |
||
690 | * |
||
691 | * Note that when originally defined, SVGA_CAP_EXTENDED_FIFO implied |
||
692 | * support only for (FIFO registers) CAPABILITIES, FLAGS, and FENCE. |
||
693 | * This means that the guest has to test individually (in most cases |
||
694 | * using FIFO caps) for the presence of registers after this; the VMX |
||
695 | * can define "extended FIFO" to mean whatever it wants, and currently |
||
696 | * won't enable it unless there's room for that set and much more. |
||
697 | */ |
||
698 | |||
699 | SVGA_FIFO_CAPABILITIES = 4, |
||
700 | SVGA_FIFO_FLAGS, |
||
701 | // Valid with SVGA_FIFO_CAP_FENCE: |
||
702 | SVGA_FIFO_FENCE, |
||
703 | |||
704 | /* |
||
705 | * Block 3a (optional extended registers): Additional registers for the |
||
706 | * extended FIFO, whose presence isn't actually implied by |
||
707 | * SVGA_CAP_EXTENDED_FIFO; these exist if SVGA_FIFO_MIN is high enough to |
||
708 | * leave room for them. |
||
709 | * |
||
710 | * These in block 3a, the VMX currently considers mandatory for the |
||
711 | * extended FIFO. |
||
712 | */ |
||
713 | |||
714 | // Valid if exists (i.e. if extended FIFO enabled): |
||
715 | SVGA_FIFO_3D_HWVERSION, /* See SVGA3dHardwareVersion in svga3d_reg.h */ |
||
716 | // Valid with SVGA_FIFO_CAP_PITCHLOCK: |
||
717 | SVGA_FIFO_PITCHLOCK, |
||
718 | |||
719 | // Valid with SVGA_FIFO_CAP_CURSOR_BYPASS_3: |
||
720 | SVGA_FIFO_CURSOR_ON, /* Cursor bypass 3 show/hide register */ |
||
721 | SVGA_FIFO_CURSOR_X, /* Cursor bypass 3 x register */ |
||
722 | SVGA_FIFO_CURSOR_Y, /* Cursor bypass 3 y register */ |
||
723 | SVGA_FIFO_CURSOR_COUNT, /* Incremented when any of the other 3 change */ |
||
724 | SVGA_FIFO_CURSOR_LAST_UPDATED,/* Last time the host updated the cursor */ |
||
725 | |||
726 | // Valid with SVGA_FIFO_CAP_RESERVE: |
||
727 | SVGA_FIFO_RESERVED, /* Bytes past NEXT_CMD with real contents */ |
||
728 | |||
729 | /* |
||
730 | * Valid with SVGA_FIFO_CAP_SCREEN_OBJECT or SVGA_FIFO_CAP_SCREEN_OBJECT_2: |
||
731 | * |
||
732 | * By default this is SVGA_ID_INVALID, to indicate that the cursor |
||
733 | * coordinates are specified relative to the virtual root. If this |
||
734 | * is set to a specific screen ID, cursor position is reinterpreted |
||
735 | * as a signed offset relative to that screen's origin. |
||
736 | */ |
||
737 | SVGA_FIFO_CURSOR_SCREEN_ID, |
||
738 | |||
739 | /* |
||
740 | * Valid with SVGA_FIFO_CAP_DEAD |
||
741 | * |
||
742 | * An arbitrary value written by the host, drivers should not use it. |
||
743 | */ |
||
744 | SVGA_FIFO_DEAD, |
||
745 | |||
746 | /* |
||
747 | * Valid with SVGA_FIFO_CAP_3D_HWVERSION_REVISED: |
||
748 | * |
||
749 | * Contains 3D HWVERSION (see SVGA3dHardwareVersion in svga3d_reg.h) |
||
750 | * on platforms that can enforce graphics resource limits. |
||
751 | */ |
||
752 | SVGA_FIFO_3D_HWVERSION_REVISED, |
||
753 | |||
754 | /* |
||
755 | * XXX: The gap here, up until SVGA_FIFO_3D_CAPS, can be used for new |
||
756 | * registers, but this must be done carefully and with judicious use of |
||
757 | * capability bits, since comparisons based on SVGA_FIFO_MIN aren't |
||
758 | * enough to tell you whether the register exists: we've shipped drivers |
||
759 | * and products that used SVGA_FIFO_3D_CAPS but didn't know about some of |
||
760 | * the earlier ones. The actual order of introduction was: |
||
761 | * - PITCHLOCK |
||
762 | * - 3D_CAPS |
||
763 | * - CURSOR_* (cursor bypass 3) |
||
764 | * - RESERVED |
||
765 | * So, code that wants to know whether it can use any of the |
||
766 | * aforementioned registers, or anything else added after PITCHLOCK and |
||
767 | * before 3D_CAPS, needs to reason about something other than |
||
768 | * SVGA_FIFO_MIN. |
||
769 | */ |
||
770 | |||
771 | /* |
||
772 | * 3D caps block space; valid with 3D hardware version >= |
||
773 | * SVGA3D_HWVERSION_WS6_B1. |
||
774 | */ |
||
775 | SVGA_FIFO_3D_CAPS = 32, |
||
776 | SVGA_FIFO_3D_CAPS_LAST = 32 + 255, |
||
777 | |||
778 | /* |
||
779 | * End of VMX's current definition of "extended-FIFO registers". |
||
780 | * Registers before here are always enabled/disabled as a block; either |
||
781 | * the extended FIFO is enabled and includes all preceding registers, or |
||
782 | * it's disabled entirely. |
||
783 | * |
||
784 | * Block 3b (truly optional extended registers): Additional registers for |
||
785 | * the extended FIFO, which the VMX already knows how to enable and |
||
786 | * disable with correct granularity. |
||
787 | * |
||
788 | * Registers after here exist if and only if the guest SVGA driver |
||
789 | * sets SVGA_FIFO_MIN high enough to leave room for them. |
||
790 | */ |
||
791 | |||
792 | // Valid if register exists: |
||
793 | SVGA_FIFO_GUEST_3D_HWVERSION, /* Guest driver's 3D version */ |
||
794 | SVGA_FIFO_FENCE_GOAL, /* Matching target for SVGA_IRQFLAG_FENCE_GOAL */ |
||
795 | SVGA_FIFO_BUSY, /* See "FIFO Synchronization Registers" */ |
||
796 | |||
797 | /* |
||
798 | * Always keep this last. This defines the maximum number of |
||
799 | * registers we know about. At power-on, this value is placed in |
||
800 | * the SVGA_REG_MEM_REGS register, and we expect the guest driver |
||
801 | * to allocate this much space in FIFO memory for registers. |
||
802 | */ |
||
803 | SVGA_FIFO_NUM_REGS |
||
804 | }; |
||
805 | |||
806 | |||
807 | /* |
||
808 | * Definition of registers included in extended FIFO support. |
||
809 | * |
||
810 | * The guest SVGA driver gets to allocate the FIFO between registers |
||
811 | * and data. It must always allocate at least 4 registers, but old |
||
812 | * drivers stopped there. |
||
813 | * |
||
814 | * The VMX will enable extended FIFO support if and only if the guest |
||
815 | * left enough room for all registers defined as part of the mandatory |
||
816 | * set for the extended FIFO. |
||
817 | * |
||
818 | * Note that the guest drivers typically allocate the FIFO only at |
||
819 | * initialization time, not at mode switches, so it's likely that the |
||
820 | * number of FIFO registers won't change without a reboot. |
||
821 | * |
||
822 | * All registers less than this value are guaranteed to be present if |
||
823 | * svgaUser->fifo.extended is set. Any later registers must be tested |
||
824 | * individually for compatibility at each use (in the VMX). |
||
825 | * |
||
826 | * This value is used only by the VMX, so it can change without |
||
827 | * affecting driver compatibility; keep it that way? |
||
828 | */ |
||
829 | #define SVGA_FIFO_EXTENDED_MANDATORY_REGS (SVGA_FIFO_3D_CAPS_LAST + 1) |
||
830 | |||
831 | |||
832 | /* |
||
833 | * FIFO Synchronization Registers |
||
834 | * |
||
835 | * This explains the relationship between the various FIFO |
||
836 | * sync-related registers in IOSpace and in FIFO space. |
||
837 | * |
||
838 | * SVGA_REG_SYNC -- |
||
839 | * |
||
840 | * The SYNC register can be used in two different ways by the guest: |
||
841 | * |
||
842 | * 1. If the guest wishes to fully sync (drain) the FIFO, |
||
843 | * it will write once to SYNC then poll on the BUSY |
||
844 | * register. The FIFO is sync'ed once BUSY is zero. |
||
845 | * |
||
846 | * 2. If the guest wants to asynchronously wake up the host, |
||
847 | * it will write once to SYNC without polling on BUSY. |
||
848 | * Ideally it will do this after some new commands have |
||
849 | * been placed in the FIFO, and after reading a zero |
||
850 | * from SVGA_FIFO_BUSY. |
||
851 | * |
||
852 | * (1) is the original behaviour that SYNC was designed to |
||
853 | * support. Originally, a write to SYNC would implicitly |
||
854 | * trigger a read from BUSY. This causes us to synchronously |
||
855 | * process the FIFO. |
||
856 | * |
||
857 | * This behaviour has since been changed so that writing SYNC |
||
858 | * will *not* implicitly cause a read from BUSY. Instead, it |
||
859 | * makes a channel call which asynchronously wakes up the MKS |
||
860 | * thread. |
||
861 | * |
||
862 | * New guests can use this new behaviour to implement (2) |
||
863 | * efficiently. This lets guests get the host's attention |
||
864 | * without waiting for the MKS to poll, which gives us much |
||
865 | * better CPU utilization on SMP hosts and on UP hosts while |
||
866 | * we're blocked on the host GPU. |
||
867 | * |
||
868 | * Old guests shouldn't notice the behaviour change. SYNC was |
||
869 | * never guaranteed to process the entire FIFO, since it was |
||
870 | * bounded to a particular number of CPU cycles. Old guests will |
||
871 | * still loop on the BUSY register until the FIFO is empty. |
||
872 | * |
||
873 | * Writing to SYNC currently has the following side-effects: |
||
874 | * |
||
875 | * - Sets SVGA_REG_BUSY to TRUE (in the monitor) |
||
876 | * - Asynchronously wakes up the MKS thread for FIFO processing |
||
877 | * - The value written to SYNC is recorded as a "reason", for |
||
878 | * stats purposes. |
||
879 | * |
||
880 | * If SVGA_FIFO_BUSY is available, drivers are advised to only |
||
881 | * write to SYNC if SVGA_FIFO_BUSY is FALSE. Drivers should set |
||
882 | * SVGA_FIFO_BUSY to TRUE after writing to SYNC. The MKS will |
||
883 | * eventually set SVGA_FIFO_BUSY on its own, but this approach |
||
884 | * lets the driver avoid sending multiple asynchronous wakeup |
||
885 | * messages to the MKS thread. |
||
886 | * |
||
887 | * SVGA_REG_BUSY -- |
||
888 | * |
||
889 | * This register is set to TRUE when SVGA_REG_SYNC is written, |
||
890 | * and it reads as FALSE when the FIFO has been completely |
||
891 | * drained. |
||
892 | * |
||
893 | * Every read from this register causes us to synchronously |
||
894 | * process FIFO commands. There is no guarantee as to how many |
||
895 | * commands each read will process. |
||
896 | * |
||
897 | * CPU time spent processing FIFO commands will be billed to |
||
898 | * the guest. |
||
899 | * |
||
900 | * New drivers should avoid using this register unless they |
||
901 | * need to guarantee that the FIFO is completely drained. It |
||
902 | * is overkill for performing a sync-to-fence. Older drivers |
||
903 | * will use this register for any type of synchronization. |
||
904 | * |
||
905 | * SVGA_FIFO_BUSY -- |
||
906 | * |
||
907 | * This register is a fast way for the guest driver to check |
||
908 | * whether the FIFO is already being processed. It reads and |
||
909 | * writes at normal RAM speeds, with no monitor intervention. |
||
910 | * |
||
911 | * If this register reads as TRUE, the host is guaranteeing that |
||
912 | * any new commands written into the FIFO will be noticed before |
||
913 | * the MKS goes back to sleep. |
||
914 | * |
||
915 | * If this register reads as FALSE, no such guarantee can be |
||
916 | * made. |
||
917 | * |
||
918 | * The guest should use this register to quickly determine |
||
919 | * whether or not it needs to wake up the host. If the guest |
||
920 | * just wrote a command or group of commands that it would like |
||
921 | * the host to begin processing, it should: |
||
922 | * |
||
923 | * 1. Read SVGA_FIFO_BUSY. If it reads as TRUE, no further |
||
924 | * action is necessary. |
||
925 | * |
||
926 | * 2. Write TRUE to SVGA_FIFO_BUSY. This informs future guest |
||
927 | * code that we've already sent a SYNC to the host and we |
||
928 | * don't need to send a duplicate. |
||
929 | * |
||
930 | * 3. Write a reason to SVGA_REG_SYNC. This will send an |
||
931 | * asynchronous wakeup to the MKS thread. |
||
932 | */ |
||
933 | |||
934 | |||
935 | /* |
||
936 | * FIFO Capabilities |
||
937 | * |
||
938 | * Fence -- Fence register and command are supported |
||
939 | * Accel Front -- Front buffer only commands are supported |
||
940 | * Pitch Lock -- Pitch lock register is supported |
||
941 | * Video -- SVGA Video overlay units are supported |
||
942 | * Escape -- Escape command is supported |
||
943 | * |
||
944 | * XXX: Add longer descriptions for each capability, including a list |
||
945 | * of the new features that each capability provides. |
||
946 | * |
||
947 | * SVGA_FIFO_CAP_SCREEN_OBJECT -- |
||
948 | * |
||
949 | * Provides dynamic multi-screen rendering, for improved Unity and |
||
950 | * multi-monitor modes. With Screen Object, the guest can |
||
951 | * dynamically create and destroy 'screens', which can represent |
||
952 | * Unity windows or virtual monitors. Screen Object also provides |
||
953 | * strong guarantees that DMA operations happen only when |
||
954 | * guest-initiated. Screen Object deprecates the BAR1 guest |
||
955 | * framebuffer (GFB) and all commands that work only with the GFB. |
||
956 | * |
||
957 | * New registers: |
||
958 | * FIFO_CURSOR_SCREEN_ID, VIDEO_DATA_GMRID, VIDEO_DST_SCREEN_ID |
||
959 | * |
||
960 | * New 2D commands: |
||
961 | * DEFINE_SCREEN, DESTROY_SCREEN, DEFINE_GMRFB, BLIT_GMRFB_TO_SCREEN, |
||
962 | * BLIT_SCREEN_TO_GMRFB, ANNOTATION_FILL, ANNOTATION_COPY |
||
963 | * |
||
964 | * New 3D commands: |
||
965 | * BLIT_SURFACE_TO_SCREEN |
||
966 | * |
||
967 | * New guarantees: |
||
968 | * |
||
969 | * - The host will not read or write guest memory, including the GFB, |
||
970 | * except when explicitly initiated by a DMA command. |
||
971 | * |
||
972 | * - All DMA, including legacy DMA like UPDATE and PRESENT_READBACK, |
||
973 | * is guaranteed to complete before any subsequent FENCEs. |
||
974 | * |
||
975 | * - All legacy commands which affect a Screen (UPDATE, PRESENT, |
||
976 | * PRESENT_READBACK) as well as new Screen blit commands will |
||
977 | * all behave consistently as blits, and memory will be read |
||
978 | * or written in FIFO order. |
||
979 | * |
||
980 | * For example, if you PRESENT from one SVGA3D surface to multiple |
||
981 | * places on the screen, the data copied will always be from the |
||
982 | * SVGA3D surface at the time the PRESENT was issued in the FIFO. |
||
983 | * This was not necessarily true on devices without Screen Object. |
||
984 | * |
||
985 | * This means that on devices that support Screen Object, the |
||
986 | * PRESENT_READBACK command should not be necessary unless you |
||
987 | * actually want to read back the results of 3D rendering into |
||
988 | * system memory. (And for that, the BLIT_SCREEN_TO_GMRFB |
||
989 | * command provides a strict superset of functionality.) |
||
990 | * |
||
991 | * - When a screen is resized, either using Screen Object commands or |
||
992 | * legacy multimon registers, its contents are preserved. |
||
993 | * |
||
994 | * SVGA_FIFO_CAP_GMR2 -- |
||
995 | * |
||
996 | * Provides new commands to define and remap guest memory regions (GMR). |
||
997 | * |
||
998 | * New 2D commands: |
||
999 | * DEFINE_GMR2, REMAP_GMR2. |
||
1000 | * |
||
1001 | * SVGA_FIFO_CAP_3D_HWVERSION_REVISED -- |
||
1002 | * |
||
1003 | * Indicates new register SVGA_FIFO_3D_HWVERSION_REVISED exists. |
||
1004 | * This register may replace SVGA_FIFO_3D_HWVERSION on platforms |
||
1005 | * that enforce graphics resource limits. This allows the platform |
||
1006 | * to clear SVGA_FIFO_3D_HWVERSION and disable 3D in legacy guest |
||
1007 | * drivers that do not limit their resources. |
||
1008 | * |
||
1009 | * Note this is an alias to SVGA_FIFO_CAP_GMR2 because these indicators |
||
1010 | * are codependent (and thus we use a single capability bit). |
||
1011 | * |
||
1012 | * SVGA_FIFO_CAP_SCREEN_OBJECT_2 -- |
||
1013 | * |
||
1014 | * Modifies the DEFINE_SCREEN command to include a guest provided |
||
1015 | * backing store in GMR memory and the bytesPerLine for the backing |
||
1016 | * store. This capability requires the use of a backing store when |
||
1017 | * creating screen objects. However if SVGA_FIFO_CAP_SCREEN_OBJECT |
||
1018 | * is present then backing stores are optional. |
||
1019 | * |
||
1020 | * SVGA_FIFO_CAP_DEAD -- |
||
1021 | * |
||
1022 | * Drivers should not use this cap bit. This cap bit can not be |
||
1023 | * reused since some hosts already expose it. |
||
1024 | */ |
||
1025 | |||
1026 | #define SVGA_FIFO_CAP_NONE 0 |
||
1027 | #define SVGA_FIFO_CAP_FENCE (1<<0) |
||
1028 | #define SVGA_FIFO_CAP_ACCELFRONT (1<<1) |
||
1029 | #define SVGA_FIFO_CAP_PITCHLOCK (1<<2) |
||
1030 | #define SVGA_FIFO_CAP_VIDEO (1<<3) |
||
1031 | #define SVGA_FIFO_CAP_CURSOR_BYPASS_3 (1<<4) |
||
1032 | #define SVGA_FIFO_CAP_ESCAPE (1<<5) |
||
1033 | #define SVGA_FIFO_CAP_RESERVE (1<<6) |
||
1034 | #define SVGA_FIFO_CAP_SCREEN_OBJECT (1<<7) |
||
1035 | #define SVGA_FIFO_CAP_GMR2 (1<<8) |
||
1036 | #define SVGA_FIFO_CAP_3D_HWVERSION_REVISED SVGA_FIFO_CAP_GMR2 |
||
1037 | #define SVGA_FIFO_CAP_SCREEN_OBJECT_2 (1<<9) |
||
1038 | #define SVGA_FIFO_CAP_DEAD (1<<10) |
||
1039 | |||
1040 | |||
1041 | /* |
||
1042 | * FIFO Flags |
||
1043 | * |
||
1044 | * Accel Front -- Driver should use front buffer only commands |
||
1045 | */ |
||
1046 | |||
1047 | #define SVGA_FIFO_FLAG_NONE 0 |
||
1048 | #define SVGA_FIFO_FLAG_ACCELFRONT (1<<0) |
||
1049 | #define SVGA_FIFO_FLAG_RESERVED (1<<31) // Internal use only |
||
1050 | |||
1051 | /* |
||
1052 | * FIFO reservation sentinel value |
||
1053 | */ |
||
1054 | |||
1055 | #define SVGA_FIFO_RESERVED_UNKNOWN 0xffffffff |
||
1056 | |||
1057 | |||
1058 | /* |
||
1059 | * Video overlay support |
||
1060 | */ |
||
1061 | |||
1062 | #define SVGA_NUM_OVERLAY_UNITS 32 |
||
1063 | |||
1064 | |||
1065 | /* |
||
1066 | * Video capabilities that the guest is currently using |
||
1067 | */ |
||
1068 | |||
1069 | #define SVGA_VIDEO_FLAG_COLORKEY 0x0001 |
||
1070 | |||
1071 | |||
1072 | /* |
||
1073 | * Offsets for the video overlay registers |
||
1074 | */ |
||
1075 | |||
1076 | enum { |
||
1077 | SVGA_VIDEO_ENABLED = 0, |
||
1078 | SVGA_VIDEO_FLAGS, |
||
1079 | SVGA_VIDEO_DATA_OFFSET, |
||
1080 | SVGA_VIDEO_FORMAT, |
||
1081 | SVGA_VIDEO_COLORKEY, |
||
1082 | SVGA_VIDEO_SIZE, // Deprecated |
||
1083 | SVGA_VIDEO_WIDTH, |
||
1084 | SVGA_VIDEO_HEIGHT, |
||
1085 | SVGA_VIDEO_SRC_X, |
||
1086 | SVGA_VIDEO_SRC_Y, |
||
1087 | SVGA_VIDEO_SRC_WIDTH, |
||
1088 | SVGA_VIDEO_SRC_HEIGHT, |
||
1089 | SVGA_VIDEO_DST_X, // Signed int32 |
||
1090 | SVGA_VIDEO_DST_Y, // Signed int32 |
||
1091 | SVGA_VIDEO_DST_WIDTH, |
||
1092 | SVGA_VIDEO_DST_HEIGHT, |
||
1093 | SVGA_VIDEO_PITCH_1, |
||
1094 | SVGA_VIDEO_PITCH_2, |
||
1095 | SVGA_VIDEO_PITCH_3, |
||
1096 | SVGA_VIDEO_DATA_GMRID, // Optional, defaults to SVGA_GMR_FRAMEBUFFER |
||
1097 | SVGA_VIDEO_DST_SCREEN_ID, // Optional, defaults to virtual coords (SVGA_ID_INVALID) |
||
1098 | SVGA_VIDEO_NUM_REGS |
||
1099 | }; |
||
1100 | |||
1101 | |||
1102 | /* |
||
1103 | * SVGA Overlay Units |
||
1104 | * |
||
1105 | * width and height relate to the entire source video frame. |
||
1106 | * srcX, srcY, srcWidth and srcHeight represent subset of the source |
||
1107 | * video frame to be displayed. |
||
1108 | */ |
||
1109 | |||
1110 | typedef struct SVGAOverlayUnit { |
||
1111 | uint32 enabled; |
||
1112 | uint32 flags; |
||
1113 | uint32 dataOffset; |
||
1114 | uint32 format; |
||
1115 | uint32 colorKey; |
||
1116 | uint32 size; |
||
1117 | uint32 width; |
||
1118 | uint32 height; |
||
1119 | uint32 srcX; |
||
1120 | uint32 srcY; |
||
1121 | uint32 srcWidth; |
||
1122 | uint32 srcHeight; |
||
1123 | int32 dstX; |
||
1124 | int32 dstY; |
||
1125 | uint32 dstWidth; |
||
1126 | uint32 dstHeight; |
||
1127 | uint32 pitches[3]; |
||
1128 | uint32 dataGMRId; |
||
1129 | uint32 dstScreenId; |
||
1130 | } SVGAOverlayUnit; |
||
1131 | |||
1132 | |||
1133 | /* |
||
1134 | * Guest display topology |
||
1135 | * |
||
1136 | * XXX: This structure is not part of the SVGA device's interface, and |
||
1137 | * doesn't really belong here. |
||
1138 | */ |
||
1139 | #define SVGA_INVALID_DISPLAY_ID ((uint32)-1) |
||
1140 | |||
1141 | typedef struct SVGADisplayTopology { |
||
1142 | uint16 displayId; |
||
1143 | uint16 isPrimary; |
||
1144 | uint32 width; |
||
1145 | uint32 height; |
||
1146 | uint32 positionX; |
||
1147 | uint32 positionY; |
||
1148 | } SVGADisplayTopology; |
||
1149 | |||
1150 | |||
1151 | /* |
||
1152 | * SVGAScreenObject -- |
||
1153 | * |
||
1154 | * This is a new way to represent a guest's multi-monitor screen or |
||
1155 | * Unity window. Screen objects are only supported if the |
||
1156 | * SVGA_FIFO_CAP_SCREEN_OBJECT capability bit is set. |
||
1157 | * |
||
1158 | * If Screen Objects are supported, they can be used to fully |
||
1159 | * replace the functionality provided by the framebuffer registers |
||
1160 | * (SVGA_REG_WIDTH, HEIGHT, etc.) and by SVGA_CAP_DISPLAY_TOPOLOGY. |
||
1161 | * |
||
1162 | * The screen object is a struct with guaranteed binary |
||
1163 | * compatibility. New flags can be added, and the struct may grow, |
||
1164 | * but existing fields must retain their meaning. |
||
1165 | * |
||
1166 | * Added with SVGA_FIFO_CAP_SCREEN_OBJECT_2 are required fields of |
||
1167 | * a SVGAGuestPtr that is used to back the screen contents. This |
||
1168 | * memory must come from the GFB. The guest is not allowed to |
||
1169 | * access the memory and doing so will have undefined results. The |
||
1170 | * backing store is required to be page aligned and the size is |
||
1171 | * padded to the next page boundry. The number of pages is: |
||
1172 | * (bytesPerLine * size.width * 4 + PAGE_SIZE - 1) / PAGE_SIZE |
||
1173 | * |
||
1174 | * The pitch in the backingStore is required to be at least large |
||
1175 | * enough to hold a 32bbp scanline. It is recommended that the |
||
1176 | * driver pad bytesPerLine for a potential performance win. |
||
1177 | * |
||
1178 | * The cloneCount field is treated as a hint from the guest that |
||
1179 | * the user wants this display to be cloned, countCount times. A |
||
1180 | * value of zero means no cloning should happen. |
||
1181 | */ |
||
1182 | |||
1183 | #define SVGA_SCREEN_MUST_BE_SET (1 << 0) // Must be set or results undefined |
||
1184 | #define SVGA_SCREEN_HAS_ROOT SVGA_SCREEN_MUST_BE_SET // Deprecated |
||
1185 | #define SVGA_SCREEN_IS_PRIMARY (1 << 1) // Guest considers this screen to be 'primary' |
||
1186 | #define SVGA_SCREEN_FULLSCREEN_HINT (1 << 2) // Guest is running a fullscreen app here |
||
1187 | |||
1188 | /* |
||
1189 | * Added with SVGA_FIFO_CAP_SCREEN_OBJECT_2. When the screen is |
||
1190 | * deactivated the base layer is defined to lose all contents and |
||
1191 | * become black. When a screen is deactivated the backing store is |
||
1192 | * optional. When set backingPtr and bytesPerLine will be ignored. |
||
1193 | */ |
||
1194 | #define SVGA_SCREEN_DEACTIVATE (1 << 3) |
||
1195 | |||
1196 | /* |
||
1197 | * Added with SVGA_FIFO_CAP_SCREEN_OBJECT_2. When this flag is set |
||
1198 | * the screen contents will be outputted as all black to the user |
||
1199 | * though the base layer contents is preserved. The screen base layer |
||
1200 | * can still be read and written to like normal though the no visible |
||
1201 | * effect will be seen by the user. When the flag is changed the |
||
1202 | * screen will be blanked or redrawn to the current contents as needed |
||
1203 | * without any extra commands from the driver. This flag only has an |
||
1204 | * effect when the screen is not deactivated. |
||
1205 | */ |
||
1206 | #define SVGA_SCREEN_BLANKING (1 << 4) |
||
1207 | |||
1208 | typedef |
||
1209 | struct { |
||
1210 | uint32 structSize; // sizeof(SVGAScreenObject) |
||
1211 | uint32 id; |
||
1212 | uint32 flags; |
||
1213 | struct { |
||
1214 | uint32 width; |
||
1215 | uint32 height; |
||
1216 | } size; |
||
1217 | struct { |
||
1218 | int32 x; |
||
1219 | int32 y; |
||
1220 | } root; |
||
1221 | |||
1222 | /* |
||
1223 | * Added and required by SVGA_FIFO_CAP_SCREEN_OBJECT_2, optional |
||
1224 | * with SVGA_FIFO_CAP_SCREEN_OBJECT. |
||
1225 | */ |
||
1226 | SVGAGuestImage backingStore; |
||
1227 | uint32 cloneCount; |
||
1228 | } SVGAScreenObject; |
||
1229 | |||
1230 | |||
1231 | /* |
||
1232 | * Commands in the command FIFO: |
||
1233 | * |
||
1234 | * Command IDs defined below are used for the traditional 2D FIFO |
||
1235 | * communication (not all commands are available for all versions of the |
||
1236 | * SVGA FIFO protocol). |
||
1237 | * |
||
1238 | * Note the holes in the command ID numbers: These commands have been |
||
1239 | * deprecated, and the old IDs must not be reused. |
||
1240 | * |
||
1241 | * Command IDs from 1000 to 1999 are reserved for use by the SVGA3D |
||
1242 | * protocol. |
||
1243 | * |
||
1244 | * Each command's parameters are described by the comments and |
||
1245 | * structs below. |
||
1246 | */ |
||
1247 | |||
1248 | typedef enum { |
||
1249 | SVGA_CMD_INVALID_CMD = 0, |
||
1250 | SVGA_CMD_UPDATE = 1, |
||
1251 | SVGA_CMD_RECT_COPY = 3, |
||
1252 | SVGA_CMD_RECT_ROP_COPY = 14, |
||
1253 | SVGA_CMD_DEFINE_CURSOR = 19, |
||
1254 | SVGA_CMD_DEFINE_ALPHA_CURSOR = 22, |
||
1255 | SVGA_CMD_UPDATE_VERBOSE = 25, |
||
1256 | SVGA_CMD_FRONT_ROP_FILL = 29, |
||
1257 | SVGA_CMD_FENCE = 30, |
||
1258 | SVGA_CMD_ESCAPE = 33, |
||
1259 | SVGA_CMD_DEFINE_SCREEN = 34, |
||
1260 | SVGA_CMD_DESTROY_SCREEN = 35, |
||
1261 | SVGA_CMD_DEFINE_GMRFB = 36, |
||
1262 | SVGA_CMD_BLIT_GMRFB_TO_SCREEN = 37, |
||
1263 | SVGA_CMD_BLIT_SCREEN_TO_GMRFB = 38, |
||
1264 | SVGA_CMD_ANNOTATION_FILL = 39, |
||
1265 | SVGA_CMD_ANNOTATION_COPY = 40, |
||
1266 | SVGA_CMD_DEFINE_GMR2 = 41, |
||
1267 | SVGA_CMD_REMAP_GMR2 = 42, |
||
1268 | SVGA_CMD_DEAD = 43, |
||
1269 | SVGA_CMD_DEAD_2 = 44, |
||
1270 | SVGA_CMD_MAX |
||
1271 | } SVGAFifoCmdId; |
||
1272 | |||
1273 | #define SVGA_CMD_MAX_DATASIZE (256 * 1024) |
||
1274 | #define SVGA_CMD_MAX_ARGS 64 |
||
1275 | #define SVGA_CB_MAX_COMMAND_SIZE (32 * 1024) // 32 KB |
||
1276 | |||
1277 | |||
1278 | /* |
||
1279 | * SVGA_CMD_UPDATE -- |
||
1280 | * |
||
1281 | * This is a DMA transfer which copies from the Guest Framebuffer |
||
1282 | * (GFB) at BAR1 + SVGA_REG_FB_OFFSET to any screens which |
||
1283 | * intersect with the provided virtual rectangle. |
||
1284 | * |
||
1285 | * This command does not support using arbitrary guest memory as a |
||
1286 | * data source- it only works with the pre-defined GFB memory. |
||
1287 | * This command also does not support signed virtual coordinates. |
||
1288 | * If you have defined screens (using SVGA_CMD_DEFINE_SCREEN) with |
||
1289 | * negative root x/y coordinates, the negative portion of those |
||
1290 | * screens will not be reachable by this command. |
||
1291 | * |
||
1292 | * This command is not necessary when using framebuffer |
||
1293 | * traces. Traces are automatically enabled if the SVGA FIFO is |
||
1294 | * disabled, and you may explicitly enable/disable traces using |
||
1295 | * SVGA_REG_TRACES. With traces enabled, any write to the GFB will |
||
1296 | * automatically act as if a subsequent SVGA_CMD_UPDATE was issued. |
||
1297 | * |
||
1298 | * Traces and SVGA_CMD_UPDATE are the only supported ways to render |
||
1299 | * pseudocolor screen updates. The newer Screen Object commands |
||
1300 | * only support true color formats. |
||
1301 | * |
||
1302 | * Availability: |
||
1303 | * Always available. |
||
1304 | */ |
||
1305 | |||
1306 | typedef |
||
1307 | struct { |
||
1308 | uint32 x; |
||
1309 | uint32 y; |
||
1310 | uint32 width; |
||
1311 | uint32 height; |
||
1312 | } SVGAFifoCmdUpdate; |
||
1313 | |||
1314 | |||
1315 | /* |
||
1316 | * SVGA_CMD_RECT_COPY -- |
||
1317 | * |
||
1318 | * Perform a rectangular DMA transfer from one area of the GFB to |
||
1319 | * another, and copy the result to any screens which intersect it. |
||
1320 | * |
||
1321 | * Availability: |
||
1322 | * SVGA_CAP_RECT_COPY |
||
1323 | */ |
||
1324 | |||
1325 | typedef |
||
1326 | struct { |
||
1327 | uint32 srcX; |
||
1328 | uint32 srcY; |
||
1329 | uint32 destX; |
||
1330 | uint32 destY; |
||
1331 | uint32 width; |
||
1332 | uint32 height; |
||
1333 | } SVGAFifoCmdRectCopy; |
||
1334 | |||
1335 | |||
1336 | /* |
||
1337 | * SVGA_CMD_RECT_ROP_COPY -- |
||
1338 | * |
||
1339 | * Perform a rectangular DMA transfer from one area of the GFB to |
||
1340 | * another, and copy the result to any screens which intersect it. |
||
1341 | * The value of ROP may only be SVGA_ROP_COPY, and this command is |
||
1342 | * only supported for backwards compatibility reasons. |
||
1343 | * |
||
1344 | * Availability: |
||
1345 | * SVGA_CAP_RECT_COPY |
||
1346 | */ |
||
1347 | |||
1348 | typedef |
||
1349 | struct { |
||
1350 | uint32 srcX; |
||
1351 | uint32 srcY; |
||
1352 | uint32 destX; |
||
1353 | uint32 destY; |
||
1354 | uint32 width; |
||
1355 | uint32 height; |
||
1356 | uint32 rop; |
||
1357 | } SVGAFifoCmdRectRopCopy; |
||
1358 | |||
1359 | |||
1360 | /* |
||
1361 | * SVGA_CMD_DEFINE_CURSOR -- |
||
1362 | * |
||
1363 | * Provide a new cursor image, as an AND/XOR mask. |
||
1364 | * |
||
1365 | * The recommended way to position the cursor overlay is by using |
||
1366 | * the SVGA_FIFO_CURSOR_* registers, supported by the |
||
1367 | * SVGA_FIFO_CAP_CURSOR_BYPASS_3 capability. |
||
1368 | * |
||
1369 | * Availability: |
||
1370 | * SVGA_CAP_CURSOR |
||
1371 | */ |
||
1372 | |||
1373 | typedef |
||
1374 | struct { |
||
1375 | uint32 id; // Reserved, must be zero. |
||
1376 | uint32 hotspotX; |
||
1377 | uint32 hotspotY; |
||
1378 | uint32 width; |
||
1379 | uint32 height; |
||
1380 | uint32 andMaskDepth; // Value must be 1 or equal to BITS_PER_PIXEL |
||
1381 | uint32 xorMaskDepth; // Value must be 1 or equal to BITS_PER_PIXEL |
||
1382 | /* |
||
1383 | * Followed by scanline data for AND mask, then XOR mask. |
||
1384 | * Each scanline is padded to a 32-bit boundary. |
||
1385 | */ |
||
1386 | } SVGAFifoCmdDefineCursor; |
||
1387 | |||
1388 | |||
1389 | /* |
||
1390 | * SVGA_CMD_DEFINE_ALPHA_CURSOR -- |
||
1391 | * |
||
1392 | * Provide a new cursor image, in 32-bit BGRA format. |
||
1393 | * |
||
1394 | * The recommended way to position the cursor overlay is by using |
||
1395 | * the SVGA_FIFO_CURSOR_* registers, supported by the |
||
1396 | * SVGA_FIFO_CAP_CURSOR_BYPASS_3 capability. |
||
1397 | * |
||
1398 | * Availability: |
||
1399 | * SVGA_CAP_ALPHA_CURSOR |
||
1400 | */ |
||
1401 | |||
1402 | typedef |
||
1403 | struct { |
||
1404 | uint32 id; // Reserved, must be zero. |
||
1405 | uint32 hotspotX; |
||
1406 | uint32 hotspotY; |
||
1407 | uint32 width; |
||
1408 | uint32 height; |
||
1409 | /* Followed by scanline data */ |
||
1410 | } SVGAFifoCmdDefineAlphaCursor; |
||
1411 | |||
1412 | |||
1413 | /* |
||
1414 | * SVGA_CMD_UPDATE_VERBOSE -- |
||
1415 | * |
||
1416 | * Just like SVGA_CMD_UPDATE, but also provide a per-rectangle |
||
1417 | * 'reason' value, an opaque cookie which is used by internal |
||
1418 | * debugging tools. Third party drivers should not use this |
||
1419 | * command. |
||
1420 | * |
||
1421 | * Availability: |
||
1422 | * SVGA_CAP_EXTENDED_FIFO |
||
1423 | */ |
||
1424 | |||
1425 | typedef |
||
1426 | struct { |
||
1427 | uint32 x; |
||
1428 | uint32 y; |
||
1429 | uint32 width; |
||
1430 | uint32 height; |
||
1431 | uint32 reason; |
||
1432 | } SVGAFifoCmdUpdateVerbose; |
||
1433 | |||
1434 | |||
1435 | /* |
||
1436 | * SVGA_CMD_FRONT_ROP_FILL -- |
||
1437 | * |
||
1438 | * This is a hint which tells the SVGA device that the driver has |
||
1439 | * just filled a rectangular region of the GFB with a solid |
||
1440 | * color. Instead of reading these pixels from the GFB, the device |
||
1441 | * can assume that they all equal 'color'. This is primarily used |
||
1442 | * for remote desktop protocols. |
||
1443 | * |
||
1444 | * Availability: |
||
1445 | * SVGA_FIFO_CAP_ACCELFRONT |
||
1446 | */ |
||
1447 | |||
1448 | #define SVGA_ROP_COPY 0x03 |
||
1449 | |||
1450 | typedef |
||
1451 | struct { |
||
1452 | uint32 color; // In the same format as the GFB |
||
1453 | uint32 x; |
||
1454 | uint32 y; |
||
1455 | uint32 width; |
||
1456 | uint32 height; |
||
1457 | uint32 rop; // Must be SVGA_ROP_COPY |
||
1458 | } SVGAFifoCmdFrontRopFill; |
||
1459 | |||
1460 | |||
1461 | /* |
||
1462 | * SVGA_CMD_FENCE -- |
||
1463 | * |
||
1464 | * Insert a synchronization fence. When the SVGA device reaches |
||
1465 | * this command, it will copy the 'fence' value into the |
||
1466 | * SVGA_FIFO_FENCE register. It will also compare the fence against |
||
1467 | * SVGA_FIFO_FENCE_GOAL. If the fence matches the goal and the |
||
1468 | * SVGA_IRQFLAG_FENCE_GOAL interrupt is enabled, the device will |
||
1469 | * raise this interrupt. |
||
1470 | * |
||
1471 | * Availability: |
||
1472 | * SVGA_FIFO_FENCE for this command, |
||
1473 | * SVGA_CAP_IRQMASK for SVGA_FIFO_FENCE_GOAL. |
||
1474 | */ |
||
1475 | |||
1476 | typedef |
||
1477 | struct { |
||
1478 | uint32 fence; |
||
1479 | } SVGAFifoCmdFence; |
||
1480 | |||
1481 | |||
1482 | /* |
||
1483 | * SVGA_CMD_ESCAPE -- |
||
1484 | * |
||
1485 | * Send an extended or vendor-specific variable length command. |
||
1486 | * This is used for video overlay, third party plugins, and |
||
1487 | * internal debugging tools. See svga_escape.h |
||
1488 | * |
||
1489 | * Availability: |
||
1490 | * SVGA_FIFO_CAP_ESCAPE |
||
1491 | */ |
||
1492 | |||
1493 | typedef |
||
1494 | struct { |
||
1495 | uint32 nsid; |
||
1496 | uint32 size; |
||
1497 | /* followed by 'size' bytes of data */ |
||
1498 | } SVGAFifoCmdEscape; |
||
1499 | |||
1500 | |||
1501 | /* |
||
1502 | * SVGA_CMD_DEFINE_SCREEN -- |
||
1503 | * |
||
1504 | * Define or redefine an SVGAScreenObject. See the description of |
||
1505 | * SVGAScreenObject above. The video driver is responsible for |
||
1506 | * generating new screen IDs. They should be small positive |
||
1507 | * integers. The virtual device will have an implementation |
||
1508 | * specific upper limit on the number of screen IDs |
||
1509 | * supported. Drivers are responsible for recycling IDs. The first |
||
1510 | * valid ID is zero. |
||
1511 | * |
||
1512 | * - Interaction with other registers: |
||
1513 | * |
||
1514 | * For backwards compatibility, when the GFB mode registers (WIDTH, |
||
1515 | * HEIGHT, PITCHLOCK, BITS_PER_PIXEL) are modified, the SVGA device |
||
1516 | * deletes all screens other than screen #0, and redefines screen |
||
1517 | * #0 according to the specified mode. Drivers that use |
||
1518 | * SVGA_CMD_DEFINE_SCREEN should destroy or redefine screen #0. |
||
1519 | * |
||
1520 | * If you use screen objects, do not use the legacy multi-mon |
||
1521 | * registers (SVGA_REG_NUM_GUEST_DISPLAYS, SVGA_REG_DISPLAY_*). |
||
1522 | * |
||
1523 | * Availability: |
||
1524 | * SVGA_FIFO_CAP_SCREEN_OBJECT or SVGA_FIFO_CAP_SCREEN_OBJECT_2 |
||
1525 | */ |
||
1526 | |||
1527 | typedef |
||
1528 | struct { |
||
1529 | SVGAScreenObject screen; // Variable-length according to version |
||
1530 | } SVGAFifoCmdDefineScreen; |
||
1531 | |||
1532 | |||
1533 | /* |
||
1534 | * SVGA_CMD_DESTROY_SCREEN -- |
||
1535 | * |
||
1536 | * Destroy an SVGAScreenObject. Its ID is immediately available for |
||
1537 | * re-use. |
||
1538 | * |
||
1539 | * Availability: |
||
1540 | * SVGA_FIFO_CAP_SCREEN_OBJECT or SVGA_FIFO_CAP_SCREEN_OBJECT_2 |
||
1541 | */ |
||
1542 | |||
1543 | typedef |
||
1544 | struct { |
||
1545 | uint32 screenId; |
||
1546 | } SVGAFifoCmdDestroyScreen; |
||
1547 | |||
1548 | |||
1549 | /* |
||
1550 | * SVGA_CMD_DEFINE_GMRFB -- |
||
1551 | * |
||
1552 | * This command sets a piece of SVGA device state called the |
||
1553 | * Guest Memory Region Framebuffer, or GMRFB. The GMRFB is a |
||
1554 | * piece of light-weight state which identifies the location and |
||
1555 | * format of an image in guest memory or in BAR1. The GMRFB has |
||
1556 | * an arbitrary size, and it doesn't need to match the geometry |
||
1557 | * of the GFB or any screen object. |
||
1558 | * |
||
1559 | * The GMRFB can be redefined as often as you like. You could |
||
1560 | * always use the same GMRFB, you could redefine it before |
||
1561 | * rendering from a different guest screen, or you could even |
||
1562 | * redefine it before every blit. |
||
1563 | * |
||
1564 | * There are multiple ways to use this command. The simplest way is |
||
1565 | * to use it to move the framebuffer either to elsewhere in the GFB |
||
1566 | * (BAR1) memory region, or to a user-defined GMR. This lets a |
||
1567 | * driver use a framebuffer allocated entirely out of normal system |
||
1568 | * memory, which we encourage. |
||
1569 | * |
||
1570 | * Another way to use this command is to set up a ring buffer of |
||
1571 | * updates in GFB memory. If a driver wants to ensure that no |
||
1572 | * frames are skipped by the SVGA device, it is important that the |
||
1573 | * driver not modify the source data for a blit until the device is |
||
1574 | * done processing the command. One efficient way to accomplish |
||
1575 | * this is to use a ring of small DMA buffers. Each buffer is used |
||
1576 | * for one blit, then we move on to the next buffer in the |
||
1577 | * ring. The FENCE mechanism is used to protect each buffer from |
||
1578 | * re-use until the device is finished with that buffer's |
||
1579 | * corresponding blit. |
||
1580 | * |
||
1581 | * This command does not affect the meaning of SVGA_CMD_UPDATE. |
||
1582 | * UPDATEs always occur from the legacy GFB memory area. This |
||
1583 | * command has no support for pseudocolor GMRFBs. Currently only |
||
1584 | * true-color 15, 16, and 24-bit depths are supported. Future |
||
1585 | * devices may expose capabilities for additional framebuffer |
||
1586 | * formats. |
||
1587 | * |
||
1588 | * The default GMRFB value is undefined. Drivers must always send |
||
1589 | * this command at least once before performing any blit from the |
||
1590 | * GMRFB. |
||
1591 | * |
||
1592 | * Availability: |
||
1593 | * SVGA_FIFO_CAP_SCREEN_OBJECT or SVGA_FIFO_CAP_SCREEN_OBJECT_2 |
||
1594 | */ |
||
1595 | |||
1596 | typedef |
||
1597 | struct { |
||
1598 | SVGAGuestPtr ptr; |
||
1599 | uint32 bytesPerLine; |
||
1600 | SVGAGMRImageFormat format; |
||
1601 | } SVGAFifoCmdDefineGMRFB; |
||
1602 | |||
1603 | |||
1604 | /* |
||
1605 | * SVGA_CMD_BLIT_GMRFB_TO_SCREEN -- |
||
1606 | * |
||
1607 | * This is a guest-to-host blit. It performs a DMA operation to |
||
1608 | * copy a rectangular region of pixels from the current GMRFB to |
||
1609 | * one or more Screen Objects. |
||
1610 | * |
||
1611 | * The destination coordinate may be specified relative to a |
||
1612 | * screen's origin (if a screen ID is specified) or relative to the |
||
1613 | * virtual coordinate system's origin (if the screen ID is |
||
1614 | * SVGA_ID_INVALID). The actual destination may span zero or more |
||
1615 | * screens, in the case of a virtual destination rect or a rect |
||
1616 | * which extends off the edge of the specified screen. |
||
1617 | * |
||
1618 | * This command writes to the screen's "base layer": the underlying |
||
1619 | * framebuffer which exists below any cursor or video overlays. No |
||
1620 | * action is necessary to explicitly hide or update any overlays |
||
1621 | * which exist on top of the updated region. |
||
1622 | * |
||
1623 | * The SVGA device is guaranteed to finish reading from the GMRFB |
||
1624 | * by the time any subsequent FENCE commands are reached. |
||
1625 | * |
||
1626 | * This command consumes an annotation. See the |
||
1627 | * SVGA_CMD_ANNOTATION_* commands for details. |
||
1628 | * |
||
1629 | * Availability: |
||
1630 | * SVGA_FIFO_CAP_SCREEN_OBJECT or SVGA_FIFO_CAP_SCREEN_OBJECT_2 |
||
1631 | */ |
||
1632 | |||
1633 | typedef |
||
1634 | struct { |
||
1635 | SVGASignedPoint srcOrigin; |
||
1636 | SVGASignedRect destRect; |
||
1637 | uint32 destScreenId; |
||
1638 | } SVGAFifoCmdBlitGMRFBToScreen; |
||
1639 | |||
1640 | |||
1641 | /* |
||
1642 | * SVGA_CMD_BLIT_SCREEN_TO_GMRFB -- |
||
1643 | * |
||
1644 | * This is a host-to-guest blit. It performs a DMA operation to |
||
1645 | * copy a rectangular region of pixels from a single Screen Object |
||
1646 | * back to the current GMRFB. |
||
1647 | * |
||
1648 | * Usage note: This command should be used rarely. It will |
||
1649 | * typically be inefficient, but it is necessary for some types of |
||
1650 | * synchronization between 3D (GPU) and 2D (CPU) rendering into |
||
1651 | * overlapping areas of a screen. |
||
1652 | * |
||
1653 | * The source coordinate is specified relative to a screen's |
||
1654 | * origin. The provided screen ID must be valid. If any parameters |
||
1655 | * are invalid, the resulting pixel values are undefined. |
||
1656 | * |
||
1657 | * This command reads the screen's "base layer". Overlays like |
||
1658 | * video and cursor are not included, but any data which was sent |
||
1659 | * using a blit-to-screen primitive will be available, no matter |
||
1660 | * whether the data's original source was the GMRFB or the 3D |
||
1661 | * acceleration hardware. |
||
1662 | * |
||
1663 | * Note that our guest-to-host blits and host-to-guest blits aren't |
||
1664 | * symmetric in their current implementation. While the parameters |
||
1665 | * are identical, host-to-guest blits are a lot less featureful. |
||
1666 | * They do not support clipping: If the source parameters don't |
||
1667 | * fully fit within a screen, the blit fails. They must originate |
||
1668 | * from exactly one screen. Virtual coordinates are not directly |
||
1669 | * supported. |
||
1670 | * |
||
1671 | * Host-to-guest blits do support the same set of GMRFB formats |
||
1672 | * offered by guest-to-host blits. |
||
1673 | * |
||
1674 | * The SVGA device is guaranteed to finish writing to the GMRFB by |
||
1675 | * the time any subsequent FENCE commands are reached. |
||
1676 | * |
||
1677 | * Availability: |
||
1678 | * SVGA_FIFO_CAP_SCREEN_OBJECT or SVGA_FIFO_CAP_SCREEN_OBJECT_2 |
||
1679 | */ |
||
1680 | |||
1681 | typedef |
||
1682 | struct { |
||
1683 | SVGASignedPoint destOrigin; |
||
1684 | SVGASignedRect srcRect; |
||
1685 | uint32 srcScreenId; |
||
1686 | } SVGAFifoCmdBlitScreenToGMRFB; |
||
1687 | |||
1688 | |||
1689 | /* |
||
1690 | * SVGA_CMD_ANNOTATION_FILL -- |
||
1691 | * |
||
1692 | * This is a blit annotation. This command stores a small piece of |
||
1693 | * device state which is consumed by the next blit-to-screen |
||
1694 | * command. The state is only cleared by commands which are |
||
1695 | * specifically documented as consuming an annotation. Other |
||
1696 | * commands (such as ESCAPEs for debugging) may intervene between |
||
1697 | * the annotation and its associated blit. |
||
1698 | * |
||
1699 | * This annotation is a promise about the contents of the next |
||
1700 | * blit: The video driver is guaranteeing that all pixels in that |
||
1701 | * blit will have the same value, specified here as a color in |
||
1702 | * SVGAColorBGRX format. |
||
1703 | * |
||
1704 | * The SVGA device can still render the blit correctly even if it |
||
1705 | * ignores this annotation, but the annotation may allow it to |
||
1706 | * perform the blit more efficiently, for example by ignoring the |
||
1707 | * source data and performing a fill in hardware. |
||
1708 | * |
||
1709 | * This annotation is most important for performance when the |
||
1710 | * user's display is being remoted over a network connection. |
||
1711 | * |
||
1712 | * Availability: |
||
1713 | * SVGA_FIFO_CAP_SCREEN_OBJECT or SVGA_FIFO_CAP_SCREEN_OBJECT_2 |
||
1714 | */ |
||
1715 | |||
1716 | typedef |
||
1717 | struct { |
||
1718 | SVGAColorBGRX color; |
||
1719 | } SVGAFifoCmdAnnotationFill; |
||
1720 | |||
1721 | |||
1722 | /* |
||
1723 | * SVGA_CMD_ANNOTATION_COPY -- |
||
1724 | * |
||
1725 | * This is a blit annotation. See SVGA_CMD_ANNOTATION_FILL for more |
||
1726 | * information about annotations. |
||
1727 | * |
||
1728 | * This annotation is a promise about the contents of the next |
||
1729 | * blit: The video driver is guaranteeing that all pixels in that |
||
1730 | * blit will have the same value as those which already exist at an |
||
1731 | * identically-sized region on the same or a different screen. |
||
1732 | * |
||
1733 | * Note that the source pixels for the COPY in this annotation are |
||
1734 | * sampled before applying the anqnotation's associated blit. They |
||
1735 | * are allowed to overlap with the blit's destination pixels. |
||
1736 | * |
||
1737 | * The copy source rectangle is specified the same way as the blit |
||
1738 | * destination: it can be a rectangle which spans zero or more |
||
1739 | * screens, specified relative to either a screen or to the virtual |
||
1740 | * coordinate system's origin. If the source rectangle includes |
||
1741 | * pixels which are not from exactly one screen, the results are |
||
1742 | * undefined. |
||
1743 | * |
||
1744 | * Availability: |
||
1745 | * SVGA_FIFO_CAP_SCREEN_OBJECT or SVGA_FIFO_CAP_SCREEN_OBJECT_2 |
||
1746 | */ |
||
1747 | |||
1748 | typedef |
||
1749 | struct { |
||
1750 | SVGASignedPoint srcOrigin; |
||
1751 | uint32 srcScreenId; |
||
1752 | } SVGAFifoCmdAnnotationCopy; |
||
1753 | |||
1754 | |||
1755 | /* |
||
1756 | * SVGA_CMD_DEFINE_GMR2 -- |
||
1757 | * |
||
1758 | * Define guest memory region v2. See the description of GMRs above. |
||
1759 | * |
||
1760 | * Availability: |
||
1761 | * SVGA_CAP_GMR2 |
||
1762 | */ |
||
1763 | |||
1764 | typedef |
||
1765 | struct { |
||
1766 | uint32 gmrId; |
||
1767 | uint32 numPages; |
||
1768 | } SVGAFifoCmdDefineGMR2; |
||
1769 | |||
1770 | |||
1771 | /* |
||
1772 | * SVGA_CMD_REMAP_GMR2 -- |
||
1773 | * |
||
1774 | * Remap guest memory region v2. See the description of GMRs above. |
||
1775 | * |
||
1776 | * This command allows guest to modify a portion of an existing GMR by |
||
1777 | * invalidating it or reassigning it to different guest physical pages. |
||
1778 | * The pages are identified by physical page number (PPN). The pages |
||
1779 | * are assumed to be pinned and valid for DMA operations. |
||
1780 | * |
||
1781 | * Description of command flags: |
||
1782 | * |
||
1783 | * SVGA_REMAP_GMR2_VIA_GMR: If enabled, references a PPN list in a GMR. |
||
1784 | * The PPN list must not overlap with the remap region (this can be |
||
1785 | * handled trivially by referencing a separate GMR). If flag is |
||
1786 | * disabled, PPN list is appended to SVGARemapGMR command. |
||
1787 | * |
||
1788 | * SVGA_REMAP_GMR2_PPN64: If set, PPN list is in PPN64 format, otherwise |
||
1789 | * it is in PPN32 format. |
||
1790 | * |
||
1791 | * SVGA_REMAP_GMR2_SINGLE_PPN: If set, PPN list contains a single entry. |
||
1792 | * A single PPN can be used to invalidate a portion of a GMR or |
||
1793 | * map it to to a single guest scratch page. |
||
1794 | * |
||
1795 | * Availability: |
||
1796 | * SVGA_CAP_GMR2 |
||
1797 | */ |
||
1798 | |||
1799 | typedef enum { |
||
1800 | SVGA_REMAP_GMR2_PPN32 = 0, |
||
1801 | SVGA_REMAP_GMR2_VIA_GMR = (1 << 0), |
||
1802 | SVGA_REMAP_GMR2_PPN64 = (1 << 1), |
||
1803 | SVGA_REMAP_GMR2_SINGLE_PPN = (1 << 2), |
||
1804 | } SVGARemapGMR2Flags; |
||
1805 | |||
1806 | typedef |
||
1807 | struct { |
||
1808 | uint32 gmrId; |
||
1809 | SVGARemapGMR2Flags flags; |
||
1810 | uint32 offsetPages; // offset in pages to begin remap |
||
1811 | uint32 numPages; // number of pages to remap |
||
1812 | /* |
||
1813 | * Followed by additional data depending on SVGARemapGMR2Flags. |
||
1814 | * |
||
1815 | * If flag SVGA_REMAP_GMR2_VIA_GMR is set, single SVGAGuestPtr follows. |
||
1816 | * Otherwise an array of page descriptors in PPN32 or PPN64 format |
||
1817 | * (according to flag SVGA_REMAP_GMR2_PPN64) follows. If flag |
||
1818 | * SVGA_REMAP_GMR2_SINGLE_PPN is set, array contains a single entry. |
||
1819 | */ |
||
1820 | } SVGAFifoCmdRemapGMR2; |
||
1821 | |||
1822 | |||
1823 | /* |
||
1824 | * Size of SVGA device memory such as frame buffer and FIFO. |
||
1825 | */ |
||
1826 | #define SVGA_VRAM_MIN_SIZE (4 * 640 * 480) // bytes |
||
1827 | #define SVGA_VRAM_MIN_SIZE_3D (16 * 1024 * 1024) |
||
1828 | #define SVGA_VRAM_MAX_SIZE (128 * 1024 * 1024) |
||
1829 | #define SVGA_MEMORY_SIZE_MAX (1024 * 1024 * 1024) |
||
1830 | #define SVGA_FIFO_SIZE_MAX (2 * 1024 * 1024) |
||
1831 | #define SVGA_GRAPHICS_MEMORY_KB_MIN (32 * 1024) |
||
1832 | #define SVGA_GRAPHICS_MEMORY_KB_MAX (2 * 1024 * 1024) |
||
1833 | #define SVGA_GRAPHICS_MEMORY_KB_DEFAULT (256 * 1024) |
||
1834 | |||
1835 | #define SVGA_VRAM_SIZE_W2K (64 * 1024 * 1024) // 64 MB |
||
1836 | |||
1837 | /* |
||
1838 | * To simplify autoDetect display configuration, support a minimum of |
||
1839 | * two 1920x1200 monitors, 32bpp, side-by-side, optionally rotated: |
||
1840 | * numDisplays = 2 |
||
1841 | * maxWidth = numDisplay * 1920 = 3840 |
||
1842 | * maxHeight = rotated width of single monitor = 1920 |
||
1843 | * vramSize = maxWidth * maxHeight * 4 = 29491200 |
||
1844 | */ |
||
1845 | #define SVGA_VRAM_SIZE_AUTODETECT (32 * 1024 * 1024) |
||
1846 | |||
1847 | #if defined(VMX86_SERVER) |
||
1848 | #define SVGA_VRAM_SIZE (4 * 1024 * 1024) |
||
1849 | #define SVGA_VRAM_SIZE_3D (64 * 1024 * 1024) |
||
1850 | #define SVGA_FIFO_SIZE (256 * 1024) |
||
1851 | #define SVGA_FIFO_SIZE_3D (516 * 1024) // Bump to 516KB to workaround WDDM driver issue (see bug# 744318) |
||
1852 | #define SVGA_MEMORY_SIZE_DEFAULT (160 * 1024 * 1024) |
||
1853 | #define SVGA_AUTODETECT_DEFAULT FALSE |
||
1854 | #else |
||
1855 | #define SVGA_VRAM_SIZE (16 * 1024 * 1024) |
||
1856 | #define SVGA_VRAM_SIZE_3D SVGA_VRAM_MAX_SIZE |
||
1857 | #define SVGA_FIFO_SIZE (2 * 1024 * 1024) |
||
1858 | #define SVGA_FIFO_SIZE_3D SVGA_FIFO_SIZE |
||
1859 | #define SVGA_MEMORY_SIZE_DEFAULT (768 * 1024 * 1024) |
||
1860 | #define SVGA_AUTODETECT_DEFAULT TRUE |
||
1861 | #endif |
||
1862 | |||
1863 | #endif><>><>><>><>><>><>><>><>31)><31)>0) |