#ifndef vbe_h #define vbe_h #ident "$Id$" #include <sys/types.h> /* Record returned by int 0x10, function 0x4f, subfunction 0x00. */ struct vbe_info { unsigned char signature[4]; unsigned char version[2]; union { struct { u_int16_t ofs; u_int16_t seg; } addr; const char *string; } oem_name; u_int32_t capabilities; union { struct { u_int16_t ofs; u_int16_t seg; } addr; u_int16_t *list; } mode_list; u_int16_t memory_size; /* VESA 3.0+ */ u_int16_t vbe_revision; union { struct { u_int16_t ofs; u_int16_t seg; } addr; const char *string; } vendor_name; union { struct { u_int16_t ofs; u_int16_t seg; } addr; const char *string; } product_name; union { struct { u_int16_t ofs; u_int16_t seg; } addr; const char *string; } product_revision; char reserved1[222]; char reserved2[256]; } __attribute__ ((packed)); /* Stuff returned by int 0x10, function 0x4f, subfunction 0x01. */ struct vbe_mode_info { /* required for all VESA versions */ struct { /* VBE 1.0+ */ u_int16_t supported: 1; u_int16_t optional_info_available: 1; u_int16_t bios_output_supported: 1; u_int16_t color: 1; u_int16_t graphics: 1; /* VBE 2.0+ */ u_int16_t not_vga_compatible: 1; u_int16_t not_bank_switched: 1; u_int16_t lfb: 1; /* VBE 1.0+ */ u_int16_t unknown: 1; u_int16_t must_enable_directaccess_in_10: 1; } mode_attributes; struct { unsigned char exists: 1; unsigned char readable: 1; unsigned char writeable: 1; unsigned char reserved: 5; } windowa_attributes, windowb_attributes; u_int16_t window_granularity; u_int16_t window_size; u_int16_t windowa_start_segment, windowb_start_segment; u_int16_t window_positioning_seg, window_positioning_ofs; u_int16_t bytes_per_scanline; /* optional for VESA 1.0/1.1, required for OEM modes */ u_int16_t w, h; unsigned char cell_width, cell_height; unsigned char memory_planes; unsigned char bpp; unsigned char banks; enum { memory_model_text = 0, memory_model_cga = 1, memory_model_hgc = 2, memory_model_ega16 = 3, memory_model_packed_pixel = 4, memory_model_sequ256 = 5, memory_model_direct_color = 6, memory_model_yuv = 7, } memory_model: 8; unsigned char bank_size; unsigned char image_pages; unsigned char reserved1; /* required for VESA 1.2+ */ unsigned char red_mask, red_field; unsigned char green_mask, green_field; unsigned char blue_mask, blue_field; unsigned char reserved_mask, reserved_field; unsigned char direct_color_mode_info; /* VESA 2.0+ */ u_int32_t linear_buffer_address; u_int32_t offscreen_memory_address; u_int16_t offscreen_memory_size; unsigned char reserved2[206]; } __attribute__ ((packed)); /* Modeline information used by XFree86. */ struct vbe_modeline { u_int16_t width, height; unsigned char interlaced; float refresh; char *modeline; float hfreq, vfreq, pixel_clock; }; /* Aspect ratios used in EDID info. */ enum vbe_edid_aspect { aspect_unknown = 0, aspect_75, aspect_8, aspect_5625, }; /* Detailed timing information used in EDID v1.x */ struct vbe_edid_detailed_timing { u_int16_t pixel_clock; #define VBE_EDID_DETAILED_TIMING_PIXEL_CLOCK(_x) \ ((_x).pixel_clock * 10000) unsigned char horizontal_active; unsigned char horizontal_blanking; unsigned char horizontal_active_hi: 4; unsigned char horizontal_blanking_hi: 4; #define VBE_EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(_x) \ (((_x).horizontal_active_hi << 8) + (_x).horizontal_active) #define VBE_EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(_x) \ (((_x).horizontal_blanking_hi << 8) + (_x).horizontal_blanking) unsigned char vertical_active; unsigned char vertical_blanking; unsigned char vertical_active_hi: 4; unsigned char vertical_blanking_hi: 4; #define VBE_EDID_DETAILED_TIMING_VERTICAL_ACTIVE(_x) \ (((_x).vertical_active_hi << 8) + (_x).vertical_active) #define VBE_EDID_DETAILED_TIMING_VERTICAL_BLANKING(_x) \ (((_x).vertical_blanking_hi << 8) + (_x).vertical_blanking) unsigned char hsync_offset; unsigned char hsync_pulse_width; unsigned char vsync_offset: 4; unsigned char vsync_pulse_width: 4; unsigned char hsync_offset_hi: 2; unsigned char hsync_pulse_width_hi: 2; unsigned char vsync_offset_hi: 2; unsigned char vsync_pulse_width_hi: 2; #define VBE_EDID_DETAILED_TIMING_HSYNC_OFFSET(_x) \ (((_x).hsync_offset_hi << 8) + (_x).hsync_offset) #define VBE_EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(_x) \ (((_x).hsync_pulse_width_hi << 8) + (_x).hsync_pulse_width) #define VBE_EDID_DETAILED_TIMING_VSYNC_OFFSET(_x) \ (((_x).vsync_offset_hi << 4) + (_x).vsync_offset) #define VBE_EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(_x) \ (((_x).vsync_pulse_width_hi << 4) + (_x).vsync_pulse_width) unsigned char himage_size; unsigned char vimage_size; unsigned char himage_size_hi: 4; unsigned char vimage_size_hi: 4; #define VBE_EDID_DETAILED_TIMING_HIMAGE_SIZE(_x) \ (((_x).himage_size_hi << 8) + (_x).himage_size) #define VBE_EDID_DETAILED_TIMING_VIMAGE_SIZE(_x) \ (((_x).vimage_size_hi << 8) + (_x).vimage_size) unsigned char hborder; unsigned char vborder; struct { unsigned char interlaced: 1; unsigned char stereo: 2; unsigned char digital_composite: 2; unsigned char variant: 2; unsigned char zero: 1; } flags __attribute__ ((packed)); } __attribute__ ((packed)); enum { vbe_edid_monitor_descriptor_serial = 0xff, vbe_edid_monitor_descriptor_ascii = 0xfe, vbe_edid_monitor_descriptor_range = 0xfd, vbe_edid_monitor_descriptor_name = 0xfc, } vbe_edid_monitor_descriptor_types; struct vbe_edid_monitor_descriptor { u_int16_t zero_flag_1; unsigned char zero_flag_2; unsigned char type; unsigned char zero_flag_3; union { char string[13]; struct { unsigned char vertical_min; unsigned char vertical_max; unsigned char horizontal_min; unsigned char horizontal_max; unsigned char pixel_clock_max; unsigned char gtf_data[8]; } range_data; } data; } __attribute__ ((packed)); struct vbe_edid1_info { unsigned char header[8]; struct { u_int16_t char3: 5; u_int16_t char2: 5; u_int16_t char1: 5; u_int16_t zero: 1; } manufacturer_name __attribute__ ((packed)); u_int16_t product_code; u_int32_t serial_number; unsigned char week; unsigned char year; unsigned char version; unsigned char revision; struct { unsigned char separate_sync: 1; unsigned char composite_sync: 1; unsigned char sync_on_green: 1; unsigned char unused: 2; unsigned char voltage_level: 2; unsigned char digital: 1; } video_input_definition __attribute__ ((packed)); unsigned char max_size_horizontal; unsigned char max_size_vertical; unsigned char gamma; struct { unsigned char unused1: 3; unsigned char rgb: 1; unsigned char unused2: 1; unsigned char active_off: 1; unsigned char suspend: 1; unsigned char standby: 1; } feature_support __attribute__ ((packed)); unsigned char color_characteristics[10]; struct { unsigned char timing_720x400_70: 1; unsigned char timing_720x400_88: 1; unsigned char timing_640x480_60: 1; unsigned char timing_640x480_67: 1; unsigned char timing_640x480_72: 1; unsigned char timing_640x480_75: 1; unsigned char timing_800x600_56: 1; unsigned char timing_800x600_60: 1; unsigned char timing_800x600_72: 1; unsigned char timing_800x600_75: 1; unsigned char timing_832x624_75: 1; unsigned char timing_1024x768_87i: 1; unsigned char timing_1024x768_60: 1; unsigned char timing_1024x768_70: 1; unsigned char timing_1024x768_75: 1; unsigned char timing_1280x1024_75: 1; } established_timings __attribute__ ((packed)); struct { unsigned char timing_1152x870_75: 1; unsigned char reserved: 7; } manufacturer_timings __attribute__ ((packed)); struct { u_int16_t xresolution: 8; u_int16_t vfreq: 6; u_int16_t aspect: 2; } standard_timing[8] __attribute__ ((packed)); union { struct vbe_edid_detailed_timing detailed_timing[4]; struct vbe_edid_monitor_descriptor monitor_descriptor[4]; } monitor_details __attribute__ ((packed)); unsigned char extension_flag; unsigned char checksum; unsigned char padding[128]; } __attribute__ ((packed)); #define VBE_LINEAR_FRAMEBUFFER 0x4000 /* Get VESA information. */ struct vbe_info *vbe_get_vbe_info(); /* Get information about a particular video mode, bitwise or with VBE_LINEAR_FRAMEBUFFER to check if LFB version is supported. */ struct vbe_mode_info *vbe_get_mode_info(u_int16_t mode); /* Check if EDID reads are supported, and do them. */ int vbe_get_edid_supported(); struct vbe_edid1_info *vbe_get_edid_info(); /* Get the current video mode, -1 on error. */ int32_t vbe_get_mode(); /* Set a new video mode, bitwise or with VBE_LINEAR_FRAMEBUFFER. */ void vbe_set_mode(u_int16_t mode); /* Save/restore the SVGA state. Call free() on the state record when done. */ const void *vbe_save_svga_state(); void vbe_restore_svga_state(const void *state); /* Get the ranges of values suitable for the attached monitor. */ void vbe_get_edid_ranges(struct vbe_edid1_info *edid, unsigned char *hmin, unsigned char *hmax, unsigned char *vmin, unsigned char *vmax); /* Get a list of modelines that will work with this monitor. */ struct vbe_modeline *vbe_get_edid_modelines(); #endif