From 4be667e4d60a9e4caf76c2366830a5b315bd1e66 Mon Sep 17 00:00:00 2001 From: John Hodge Date: Thu, 26 Dec 2013 16:47:18 +0800 Subject: [PATCH] Modules/VESA - Allowed #if-ing out VM8086 use --- KernelLand/Modules/Display/VESA/common.h | 86 ++++++------------------ KernelLand/Modules/Display/VESA/main.c | 81 +++++++++++++--------- KernelLand/Modules/Display/VESA/vbe.h | 79 ++++++++++++++++++++++ 3 files changed, 146 insertions(+), 100 deletions(-) create mode 100644 KernelLand/Modules/Display/VESA/vbe.h diff --git a/KernelLand/Modules/Display/VESA/common.h b/KernelLand/Modules/Display/VESA/common.h index c81fe1a8..94fd8e2d 100644 --- a/KernelLand/Modules/Display/VESA/common.h +++ b/KernelLand/Modules/Display/VESA/common.h @@ -1,15 +1,28 @@ /** + * Acess2 Kernel VBE Driver + * - By John Hodge (thePowersGang) + * + * common.h + * - Driver-internal definitions */ #ifndef _COMMON_H_ #define _COMMON_H_ -// === TYPES === -typedef struct sFarPtr -{ - Uint16 ofs; - Uint16 seg; -} tFarPtr; +#include "vbe.h" + +/** + * \name Mode Flags + * \{ + */ +#define FLAG_LFB 0x01 //!< Framebuffer is a linear framebufer +#define FLAG_POPULATED 0x02 //!< Mode information is populated +#define FLAG_VALID 0x04 //!< Mode is valid (usable) +#define FLAG_GRAPHICS 0x08 //!< Graphics mode +/** + * \} + */ +// === TYPES === typedef struct sVesa_Mode { Uint16 code; @@ -19,65 +32,4 @@ typedef struct sVesa_Mode Uint32 fbSize; Uint32 framebuffer; } tVesa_Mode; - -typedef struct sVesa_CallModeInfo -{ - /** - * 0 : Mode is supported - * 1 : Optional information avaliable (Xres onwards) - * 2 : BIOS Output Supported - * 3 : Colour Mode? - * 4 : Graphics mode? - * -- VBE v2.0+ - * 5 : Mode is not VGA compatible - * 6 : Bank switched mode supported - * 7 : Linear framebuffer mode supported - * 8 : Double-scan mode avaliable - */ - Uint16 attributes; - /** - * 0 : Window exists - * 1 : Window is readable - * 2 : Window is writable - */ - Uint8 winA,winB; - Uint16 granularity; - Uint16 winsize; - Uint16 segmentA, segmentB; - tFarPtr realFctPtr; - Uint16 pitch; // Bytes per scanline - - Uint16 Xres, Yres; - Uint8 Wchar, Ychar, planes, bpp, banks; - Uint8 memory_model, bank_size, image_pages; - Uint8 reserved0; - - // -- VBE v1.2+ - Uint8 red_mask, red_position; - Uint8 green_mask, green_position; - Uint8 blue_mask, blue_position; - Uint8 rsv_mask, rsv_position; - Uint8 directcolor_attributes; - - // -- VBE v2.0+ - Uint32 physbase; - Uint32 offscreen_ptr; // Start of offscreen memory - Uint16 offscreen_size_kb; // Size of offscreen memory - - // -- VBE v3.0 - Uint16 lfb_pitch; - Uint8 image_count_banked; - Uint8 image_count_lfb; -} tVesa_CallModeInfo; - -typedef struct sVesa_CallInfo -{ - char signature[4]; // == "VESA" - Uint16 Version; // == 0x0300 for Vesa 3.0 - tFarPtr OEMString; // isa vbeFarPtr - Uint8 Capabilities[4]; - tFarPtr VideoModes; // isa vbeParPtr - Uint16 TotalMemory; // as # of 64KB blocks -} tVesa_CallInfo; - #endif diff --git a/KernelLand/Modules/Display/VESA/main.c b/KernelLand/Modules/Display/VESA/main.c index 51c80e1a..3422d0e6 100644 --- a/KernelLand/Modules/Display/VESA/main.c +++ b/KernelLand/Modules/Display/VESA/main.c @@ -15,9 +15,7 @@ #include // === CONSTANTS === -#define FLAG_LFB 0x1 -#define FLAG_POPULATED 0x2 -#define FLAG_VALID 0x4 +#define USE_BIOS 1 #define VESA_DEFAULT_FRAMEBUFFER (KERNEL_BASE|0xA0000) #define BLINKING_CURSOR 0 #if BLINKING_CURSOR @@ -83,8 +81,6 @@ bool gbVesa_DisableBIOSCalls; // Disables calls to the BIOS // === CODE === int Vesa_Install(char **Arguments) { - int rv; - for( int i = 0; Arguments && Arguments[i]; i ++ ) { if( strcmp(Arguments[i], "nobios") == 0 ) @@ -96,13 +92,15 @@ int Vesa_Install(char **Arguments) } } + #if USE_BIOS if( !gbVesa_DisableBIOSCalls ) { gpVesa_BiosState = VM8086_Init(); - if( (rv = VBE_int_GetModeList()) ) - return rv; + int rv = VBE_int_GetModeList(); + if(rv) return rv; } + #endif #if BLINKING_CURSOR // Create blink timer @@ -116,6 +114,7 @@ int Vesa_Install(char **Arguments) return MODULE_ERR_OK; } +#if USE_BIOS int VBE_int_GetModeList(void) { tVesa_CallInfo *info; @@ -174,6 +173,7 @@ int VBE_int_GetModeInfo(Uint16 Code, tFarPtr *BufPtr) } return 0; } +#endif void VBE_int_FillMode_Int(tVesa_Mode *Mode, const tVesa_CallModeInfo *vbeinfo) @@ -220,8 +220,9 @@ void VBE_int_FillMode_Int(tVesa_Mode *Mode, const tVesa_CallModeInfo *vbeinfo) S_LOG(*vbeinfo, image_count_lfb, "%i"); LOG("}"); #endif - + Mode->flags = FLAG_POPULATED; + // Check if this mode is supported by hardware if( !(vbeinfo->attributes & 1) ) { #if DEBUG @@ -245,7 +246,7 @@ void VBE_int_FillMode_Int(tVesa_Mode *Mode, const tVesa_CallModeInfo *vbeinfo) Mode->bpp = 0; return ; case 0x90: - Mode->flags |= FLAG_LFB; + Mode->flags |= FLAG_LFB|FLAG_GRAPHICS; Mode->framebuffer = vbeinfo->physbase; Mode->fbSize = vbeinfo->Yres*vbeinfo->pitch; break; @@ -271,6 +272,7 @@ void VBE_int_SetBootMode(Uint16 ModeID, const void *ModeInfo) void Vesa_int_FillModeList(void) { + #if USE_BIOS if( !gbVesaModesChecked && !gbVesa_DisableBIOSCalls ) { tVesa_CallModeInfo *modeinfo; @@ -288,6 +290,7 @@ void Vesa_int_FillModeList(void) gbVesaModesChecked = 1; } + #endif } /** @@ -295,35 +298,43 @@ void Vesa_int_FillModeList(void) */ size_t Vesa_Write(tVFS_Node *Node, off_t Offset, size_t Length, const void *Buffer, Uint Flags) { - // Framebuffer modes - just pass on - if( gpVesaCurMode->flags & FLAG_LFB ) - return DrvUtil_Video_WriteLFB(&gVesa_BufInfo, Offset, Length, Buffer); - - // EGA text mode translation - switch( gVesa_BufInfo.BufferFormat ) + switch( gpVesaCurMode->flags & (FLAG_LFB|FLAG_GRAPHICS) ) { - case VIDEO_BUFFMT_TEXT: { - int num = Length / sizeof(tVT_Char); - int ofs = Offset / sizeof(tVT_Char); - int i = 0; - const tVT_Char *chars = Buffer; - Uint16 word; - - for( ; num--; i ++, ofs ++) + case 0: + // EGA text mode translation + switch( gVesa_BufInfo.BufferFormat ) { - word = VBE_int_GetWord( &chars[i] ); - ((Uint16*)gVesa_BufInfo.Framebuffer)[ ofs ] = word; + case VIDEO_BUFFMT_TEXT: { + int num = Length / sizeof(tVT_Char); + int ofs = Offset / sizeof(tVT_Char); + int i = 0; + const tVT_Char *chars = Buffer; + + for( ; num--; i ++, ofs ++) + { + Uint16 word = VBE_int_GetWord( &chars[i] ); + ((Uint16*)gVesa_BufInfo.Framebuffer)[ ofs ] = word; + } + + return Length; } + case VIDEO_BUFFMT_2DSTREAM: + return DrvUtil_Video_2DStream(NULL, Buffer, Length, + &gVBE_Text2DFunctions, sizeof(gVBE_Text2DFunctions)); + default: + Log_Warning("VBE", "TODO: Alternate modes in EGA text mode"); + return 0; } - - return Length; } - case VIDEO_BUFFMT_2DSTREAM: - return DrvUtil_Video_2DStream(NULL, Buffer, Length, - &gVBE_Text2DFunctions, sizeof(gVBE_Text2DFunctions)); + return 0; + case FLAG_LFB|FLAG_GRAPHICS: + // Framebuffer modes - use DrvUtil Video + return DrvUtil_Video_WriteLFB(&gVesa_BufInfo, Offset, Length, Buffer); default: - Log_Warning("VBE", "TODO: Alternate modes in EGA text mode"); + Log_Warning("VBE", "TODO: _Write %s%s", + (gpVesaCurMode->flags & FLAG_LFB ? "FLAG_LFB" : ""), + (gpVesaCurMode->flags & FLAG_GRAPHICS ? "FLAG_GRAPHICS" : "") + ); return 0; } - } const char *csaVESA_IOCtls[] = {DRV_IOCTLNAMES, DRV_VIDEO_IOCTLNAMES, NULL}; @@ -394,7 +405,8 @@ int Vesa_Int_SetMode(int mode) #endif Mutex_Acquire( &glVesa_Lock ); - + + #if USE_BIOS if( gbVesa_DisableBIOSCalls ) { ASSERT(mode == -1); @@ -413,6 +425,9 @@ int Vesa_Int_SetMode(int mode) LOG("Out: AX = %04x", gpVesa_BiosState->AX); } + #else + ASSERT(mode == -1); + #endif // Map Framebuffer if( gpVesaCurMode ) diff --git a/KernelLand/Modules/Display/VESA/vbe.h b/KernelLand/Modules/Display/VESA/vbe.h new file mode 100644 index 00000000..ace7496a --- /dev/null +++ b/KernelLand/Modules/Display/VESA/vbe.h @@ -0,0 +1,79 @@ +/* + * Acess2 Kernel VBE Driver + * - By John Hodge (thePowersGang) + * + * vbe.h + * - Definitions for VBE structures + */ +#ifndef _VBE_H_ +#define _VBE_H_ + +typedef struct sFarPtr +{ + Uint16 ofs; + Uint16 seg; +} tFarPtr; + +typedef struct sVesa_CallModeInfo +{ + /** + * 0 : Mode is supported + * 1 : Optional information avaliable (Xres onwards) + * 2 : BIOS Output Supported + * 3 : Colour Mode? + * 4 : Graphics mode? + * -- VBE v2.0+ + * 5 : Mode is not VGA compatible + * 6 : Bank switched mode supported + * 7 : Linear framebuffer mode supported + * 8 : Double-scan mode avaliable + */ + Uint16 attributes; + /** + * 0 : Window exists + * 1 : Window is readable + * 2 : Window is writable + */ + Uint8 winA,winB; + Uint16 granularity; + Uint16 winsize; + Uint16 segmentA, segmentB; + tFarPtr realFctPtr; + Uint16 pitch; // Bytes per scanline + + Uint16 Xres, Yres; + Uint8 Wchar, Ychar, planes, bpp, banks; + Uint8 memory_model, bank_size, image_pages; + Uint8 reserved0; + + // -- VBE v1.2+ + Uint8 red_mask, red_position; + Uint8 green_mask, green_position; + Uint8 blue_mask, blue_position; + Uint8 rsv_mask, rsv_position; + Uint8 directcolor_attributes; + + // -- VBE v2.0+ + Uint32 physbase; + Uint32 offscreen_ptr; // Start of offscreen memory + Uint16 offscreen_size_kb; // Size of offscreen memory + + // -- VBE v3.0 + Uint16 lfb_pitch; + Uint8 image_count_banked; + Uint8 image_count_lfb; +} PACKED tVesa_CallModeInfo; + +typedef struct sVesa_CallInfo +{ + char signature[4]; // == "VESA" + Uint16 Version; // == 0x0300 for Vesa 3.0 + tFarPtr OEMString; // isa vbeFarPtr + Uint8 Capabilities[4]; + tFarPtr VideoModes; // isa vbeParPtr + Uint16 TotalMemory; // as # of 64KB blocks +} PACKED tVesa_CallInfo; + + +#endif + -- 2.20.1