Modules/Display/Tegra2Vid/main.c

   1 /**\r
   2  * main.c\r
   3  * - Driver core\r
   4  */\r
   5 #define DEBUG   0\r
   6 #define VERSION ((0<<8)|10)\r
   7 #include <acess.h>\r
   8 #include <errno.h>\r
   9 #include <modules.h>\r
  10 #include <vfs.h>\r
  11 #include <fs_devfs.h>\r
  12 #include <drv_pci.h>\r
  13 #include <api_drv_video.h>\r
  14 #include <lib/keyvalue.h>\r
  15 #include <options.h>    // ARM Arch\r
  16 #include "tegra2.h"\r
  17 \r
  18 #define ABS(a)  ((a)>0?(a):-(a))\r
  19 \r
  20 // === PROTOTYPES ===\r
  21 // Driver\r
  22  int    Tegra2Vid_Install(char **Arguments);\r
  23 void    Tegra2Vid_Uninstall();\r
  24 // Internal\r
  25 // Filesystem\r
  26 Uint64  Tegra2Vid_Read(tVFS_Node *node, Uint64 off, Uint64 len, void *buffer);\r
  27 Uint64  Tegra2Vid_Write(tVFS_Node *node, Uint64 off, Uint64 len, void *buffer);\r
  28  int    Tegra2Vid_IOCtl(tVFS_Node *node, int id, void *data);\r
  29 // -- Internals\r
  30  int    Tegra2Vid_int_SetMode(int Mode);\r
  31 \r
  32 // === GLOBALS ===\r
  33 MODULE_DEFINE(0, VERSION, Tegra2Vid, Tegra2Vid_Install, NULL, NULL);\r
  34 tDevFS_Driver   gTegra2Vid_DriverStruct = {\r
  35         NULL, "Tegra2Vid",\r
  36         {\r
  37         .Read = Tegra2Vid_Read,\r
  38         .Write = Tegra2Vid_Write,\r
  39         .IOCtl = Tegra2Vid_IOCtl\r
  40         }\r
  41 };\r
  42 // -- Options\r
  43 tPAddr  gTegra2Vid_PhysBase = TEGRA2VID_BASE;\r
  44  int    gbTegra2Vid_IsVersatile = 1;\r
  45 // -- KeyVal parse rules\r
  46 const tKeyVal_ParseRules        gTegra2Vid_KeyValueParser = {\r
  47         NULL,\r
  48         {\r
  49                 {"Base", "P", &gTegra2Vid_PhysBase},\r
  50                 {NULL, NULL, NULL}\r
  51         }\r
  52 };\r
  53 // -- Driver state\r
  54  int    giTegra2Vid_CurrentMode = 0;\r
  55  int    giTegra2Vid_BufferMode;\r
  56 size_t  giTegra2Vid_FramebufferSize;\r
  57 Uint32  *gpTegra2Vid_IOMem;\r
  58 tPAddr  gTegra2Vid_FramebufferPhys;\r
  59 void    *gpTegra2Vid_Framebuffer;\r
  60 // -- Misc\r
  61 tDrvUtil_Video_BufInfo  gTegra2Vid_DrvUtil_BufInfo;\r
  62 tVideo_IOCtl_Pos        gTegra2Vid_CursorPos;\r
  63 \r
  64 // === CODE ===\r
  65 /**\r
  66  */\r
  67 int Tegra2Vid_Install(char **Arguments)\r
  68 {\r
  69 //      KeyVal_Parse(&gTegra2Vid_KeyValueParser, Arguments);\r
  70         \r
  71         gpTegra2Vid_IOMem = (void*)MM_MapHWPages(gTegra2Vid_PhysBase, 256/4);\r
  72 \r
  73         Tegra2Vid_int_SetMode(4);\r
  74 \r
  75         DevFS_AddDevice( &gTegra2Vid_DriverStruct );\r
  76 \r
  77         return 0;\r
  78 }\r
  79 \r
  80 /**\r
  81  * \brief Clean up resources for driver unloading\r
  82  */\r
  83 void Tegra2Vid_Uninstall()\r
  84 {\r
  85 }\r
  86 \r
  87 /**\r
  88  * \brief Read from the framebuffer\r
  89  */\r
  90 Uint64 Tegra2Vid_Read(tVFS_Node *node, Uint64 off, Uint64 len, void *buffer)\r
  91 {\r
  92         return 0;\r
  93 }\r
  94 \r
  95 /**\r
  96  * \brief Write to the framebuffer\r
  97  */\r
  98 Uint64 Tegra2Vid_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)\r
  99 {\r
 100         gTegra2Vid_DrvUtil_BufInfo.BufferFormat = giTegra2Vid_BufferMode;\r
 101         return DrvUtil_Video_WriteLFB(&gTegra2Vid_DrvUtil_BufInfo, Offset, Length, Buffer);\r
 102 }\r
 103 \r
 104 const char *csaTegra2Vid_IOCtls[] = {DRV_IOCTLNAMES, DRV_VIDEO_IOCTLNAMES, NULL};\r
 105 \r
 106 /**\r
 107  * \brief Handle messages to the device\r
 108  */\r
 109 int Tegra2Vid_IOCtl(tVFS_Node *Node, int ID, void *Data)\r
 110 {\r
 111          int    ret = -2;\r
 112         ENTER("pNode iID pData", Node, ID, Data);\r
 113         \r
 114         switch(ID)\r
 115         {\r
 116         BASE_IOCTLS(DRV_TYPE_VIDEO, "PL110", VERSION, csaTegra2Vid_IOCtls);\r
 117 \r
 118         case VIDEO_IOCTL_SETBUFFORMAT:\r
 119                 DrvUtil_Video_RemoveCursor( &gTegra2Vid_DrvUtil_BufInfo );\r
 120                 ret = giTegra2Vid_BufferMode;\r
 121                 if(Data)        giTegra2Vid_BufferMode = *(int*)Data;\r
 122                 if(gTegra2Vid_DrvUtil_BufInfo.BufferFormat == VIDEO_BUFFMT_TEXT)\r
 123                         DrvUtil_Video_SetCursor( &gTegra2Vid_DrvUtil_BufInfo, &gDrvUtil_TextModeCursor );\r
 124                 break;\r
 125         \r
 126         case VIDEO_IOCTL_GETSETMODE:\r
 127                 if(Data)\r
 128                 {\r
 129                          int    newMode;\r
 130                         \r
 131                         if( !CheckMem(Data, sizeof(int)) )\r
 132                                 LEAVE_RET('i', -1);\r
 133                         \r
 134                         newMode = *(int*)Data;\r
 135                         \r
 136                         if(newMode < 0 || newMode >= ciTegra2Vid_ModeCount)\r
 137                                 LEAVE_RET('i', -1);\r
 138 \r
 139                         if(newMode != giTegra2Vid_CurrentMode)\r
 140                         {\r
 141                                 giTegra2Vid_CurrentMode = newMode;\r
 142                                 Tegra2Vid_int_SetMode( newMode );\r
 143                         }\r
 144                 }\r
 145                 ret = giTegra2Vid_CurrentMode;\r
 146                 break;\r
 147         \r
 148         case VIDEO_IOCTL_FINDMODE:\r
 149                 {\r
 150                 tVideo_IOCtl_Mode *mode = Data;\r
 151                  int    closest, closestArea, reqArea = 0;\r
 152                 if(!Data || !CheckMem(Data, sizeof(tVideo_IOCtl_Mode)))\r
 153                         LEAVE_RET('i', -1);\r
 154                 if( mode->bpp != 32 )\r
 155                         LEAVE_RET('i', 0);\r
 156                 if( mode->flags != 0 )\r
 157                         LEAVE_RET('i', 0);\r
 158 \r
 159                 ret = 0;\r
 160 \r
 161                 for( int i = 0; i < ciTegra2Vid_ModeCount; i ++ )\r
 162                 {\r
 163                          int    area;\r
 164                         if(mode->width == caTegra2Vid_Modes[i].W && mode->height == caTegra2Vid_Modes[i].H) {\r
 165                                 mode->id = i;\r
 166                                 ret = 1;\r
 167                                 break;\r
 168                         }\r
 169                         \r
 170                         area = caTegra2Vid_Modes[i].W * caTegra2Vid_Modes[i].H;\r
 171                         if(!reqArea) {\r
 172                                 reqArea = mode->width * mode->height;\r
 173                                 closest = i;\r
 174                                 closestArea = area;\r
 175                         }\r
 176                         else if( ABS(area - reqArea) < ABS(closestArea - reqArea) ) {\r
 177                                 closest = i;\r
 178                                 closestArea = area;\r
 179                         }\r
 180                 }\r
 181                 \r
 182                 if( ret == 0 )\r
 183                 {\r
 184                         mode->id = closest;\r
 185                         ret = 1;\r
 186                 }\r
 187                 mode->width = caTegra2Vid_Modes[mode->id].W;\r
 188                 mode->height = caTegra2Vid_Modes[mode->id].H;\r
 189                 break;\r
 190                 }\r
 191         \r
 192         case VIDEO_IOCTL_MODEINFO:\r
 193                 {\r
 194                 tVideo_IOCtl_Mode *mode = Data;\r
 195                 if(!Data || !CheckMem(Data, sizeof(tVideo_IOCtl_Mode)))\r
 196                         LEAVE_RET('i', -1);\r
 197                 if(mode->id < 0 || mode->id >= ciTegra2Vid_ModeCount)\r
 198                         LEAVE_RET('i', 0);\r
 199                 \r
 200 \r
 201                 mode->bpp = 32;\r
 202                 mode->flags = 0;\r
 203                 mode->width = caTegra2Vid_Modes[mode->id].W;\r
 204                 mode->height = caTegra2Vid_Modes[mode->id].H;\r
 205 \r
 206                 ret = 1;\r
 207                 break;\r
 208                 }\r
 209         \r
 210         case VIDEO_IOCTL_SETCURSOR:\r
 211                 if( !Data || !CheckMem(Data, sizeof(tVideo_IOCtl_Pos)) )\r
 212                         LEAVE_RET('i', -1);\r
 213 \r
 214                 DrvUtil_Video_RemoveCursor( &gTegra2Vid_DrvUtil_BufInfo );\r
 215                 \r
 216                 gTegra2Vid_CursorPos = *(tVideo_IOCtl_Pos*)Data;\r
 217                 if(gTegra2Vid_DrvUtil_BufInfo.BufferFormat == VIDEO_BUFFMT_TEXT)\r
 218                         DrvUtil_Video_DrawCursor(\r
 219                                 &gTegra2Vid_DrvUtil_BufInfo,\r
 220                                 gTegra2Vid_CursorPos.x*giVT_CharWidth,\r
 221                                 gTegra2Vid_CursorPos.y*giVT_CharHeight\r
 222                                 );\r
 223                 else\r
 224                         DrvUtil_Video_DrawCursor(\r
 225                                 &gTegra2Vid_DrvUtil_BufInfo,\r
 226                                 gTegra2Vid_CursorPos.x,\r
 227                                 gTegra2Vid_CursorPos.y\r
 228                                 );\r
 229                 break;\r
 230         \r
 231         default:\r
 232                 LEAVE('i', -2);\r
 233                 return -2;\r
 234         }\r
 235         \r
 236         LEAVE('i', ret);\r
 237         return ret;\r
 238 }\r
 239 \r
 240 //\r
 241 //\r
 242 //\r
 243 \r
 244 int Tegra2Vid_int_SetMode(int Mode)\r
 245 {\r
 246         const struct sTegra2_Disp_Mode  *mode = &caTegra2Vid_Modes[Mode];\r
 247          int    w = mode->W, h = mode->H;       // Horizontal/Vertical Active\r
 248         *(Uint32*)(gpTegra2Vid_IOMem + DC_DISP_FRONT_PORCH_0) = (mode->VFP << 16) | mode->HFP; \r
 249         *(Uint32*)(gpTegra2Vid_IOMem + DC_DISP_SYNC_WIDTH_0)  = (mode->HS << 16)  | mode->HS;\r
 250         *(Uint32*)(gpTegra2Vid_IOMem + DC_DISP_BACK_PORCH_0)  = (mode->VBP << 16) | mode->HBP;\r
 251         *(Uint32*)(gpTegra2Vid_IOMem + DC_DISP_DISP_ACTIVE_0) = (mode->H << 16)   | mode->W;\r
 252 \r
 253         *(Uint32*)(gpTegra2Vid_IOMem + DC_WIN_A_POSITION_0) = 0;\r
 254         *(Uint32*)(gpTegra2Vid_IOMem + DC_WIN_A_SIZE_0) = (mode->H << 16) | mode->W;\r
 255         *(Uint32*)(gpTegra2Vid_IOMem + DC_DISP_DISP_COLOR_CONTROL_0) = 0x8;     // BASE888\r
 256         *(Uint32*)(gpTegra2Vid_IOMem + DC_WIN_A_COLOR_DEPTH_0) = 12;    // Could be 13 (BGR/RGB)\r
 257         *(Uint32*)(gpTegra2Vid_IOMem + DC_WIN_A_PRESCALED_SIZE_0) = (mode->H << 16) | mode->W;\r
 258 \r
 259         Log_Debug("Tegra2Vid", "Mode %i (%ix%i) selected", Mode, w, h);\r
 260 \r
 261         if( !gpTegra2Vid_Framebuffer || w*h*4 != giTegra2Vid_FramebufferSize )\r
 262         {\r
 263                 if( gpTegra2Vid_Framebuffer )\r
 264                 {\r
 265                         // TODO: Free framebuffer for reallocation\r
 266                 }\r
 267 \r
 268                 giTegra2Vid_FramebufferSize = w*h*4;            \r
 269 \r
 270                 gpTegra2Vid_Framebuffer = (void*)MM_AllocDMA(\r
 271                         (giTegra2Vid_FramebufferSize + PAGE_SIZE-1) / PAGE_SIZE,\r
 272                         32,\r
 273                         &gTegra2Vid_FramebufferPhys\r
 274                         );\r
 275                 // TODO: Catch allocation failures\r
 276                 Log_Debug("Tegra2Vid", "0x%x byte framebuffer at %p (%P phys)",\r
 277                                 giTegra2Vid_FramebufferSize,\r
 278                                 gpTegra2Vid_Framebuffer,\r
 279                                 gTegra2Vid_FramebufferPhys\r
 280                                 );\r
 281                 \r
 282                 // Tell hardware\r
 283                 *(Uint32*)(gpTegra2Vid_IOMem + DC_WINBUF_A_START_ADDR_0) = gTegra2Vid_FramebufferPhys;\r
 284                 *(Uint32*)(gpTegra2Vid_IOMem + DC_WINBUF_A_ADDR_V_OFFSET_0) = 0;        // Y offset\r
 285                 *(Uint32*)(gpTegra2Vid_IOMem + DC_WINBUF_A_ADDR_H_OFFSET_0) = 0;        // X offset\r
 286         }\r
 287 \r
 288         return 0;\r
 289 }\r