mirror of
https://github.com/mpv-player/mpv
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vbelib import
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2244 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
nick
parent
e7e64459a2
commit
6225db192c
265
linux/vbelib.c
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265
linux/vbelib.c
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@ -0,0 +1,265 @@
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/*
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This file contains implementation of VESA library which is based on
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LRMI (Linux real-mode interface).
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So it's not an emulator - it calls real int 10h handler under Linux.
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Note: VESA is available only on x86 systems.
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You can redistribute this file under terms and conditions
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GNU General Public licence v2.
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Written by Nick Kurshev <nickols_k@mail.ru>
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*/
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#include "vbelib.h"
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#include "lrmi.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <sys/io.h>
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static struct VesaProtModeInterface vbe_pm_info;
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int vbeInit( void )
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{
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if(!LRMI_init()) return VBE_VM86_FAIL;
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/*
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Allow read/write to ALL io ports
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*/
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ioperm(0, 1024, 1);
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iopl(3);
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memset(&vbe_pm_info,0,sizeof(struct VesaProtModeInterface));
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vbeGetProtModeInfo(&vbe_pm_info);
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return VBE_OK;
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}
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int vbeDestroy( void ) { return VBE_OK; }
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int vbeGetControllerInfo(struct VbeInfoBlock *data)
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{
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struct LRMI_regs r;
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void *rm_space;
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int retval;
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if(!(rm_space = LRMI_alloc_real(sizeof(struct VbeInfoBlock)))) return VBE_OUT_OF_DOS_MEM;
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memcpy(rm_space,data,sizeof(struct VbeInfoBlock));
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memset(&r,0,sizeof(struct LRMI_regs));
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r.eax = 0x4f00;
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r.es = VirtToPhysSeg(rm_space);
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r.edi = VirtToPhysOff(rm_space);
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if(!LRMI_int(0x10,&r))
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{
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LRMI_free_real(rm_space);
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return VBE_VM86_FAIL;
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}
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retval = r.eax & 0xffff;
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if(retval == 0x4f)
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{
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FarPtr fpdata;
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retval = VBE_OK;
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memcpy(data,rm_space,sizeof(struct VbeInfoBlock));
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fpdata.seg = (unsigned long)(data->OemStringPtr) >> 16;
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fpdata.off = (unsigned long)(data->OemStringPtr) & 0xffff;
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data->OemStringPtr = PhysToVirt(fpdata);
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fpdata.seg = (unsigned long)(data->VideoModePtr) >> 16;
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fpdata.off = (unsigned long)(data->VideoModePtr) & 0xffff;
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data->VideoModePtr = PhysToVirt(fpdata);
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fpdata.seg = (unsigned long)(data->OemVendorNamePtr) >> 16;
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fpdata.off = (unsigned long)(data->OemVendorNamePtr) & 0xffff;
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data->OemVendorNamePtr = PhysToVirt(fpdata);
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fpdata.seg = (unsigned long)(data->OemProductNamePtr) >> 16;
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fpdata.off = (unsigned long)(data->OemProductNamePtr) & 0xffff;
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data->OemProductNamePtr = PhysToVirt(fpdata);
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fpdata.seg = (unsigned long)(data->OemProductRevPtr) >> 16;
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fpdata.off = (unsigned long)(data->OemProductRevPtr) & 0xffff;
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data->OemProductRevPtr = PhysToVirt(fpdata);
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}
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return retval;
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}
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int vbeGetModeInfo(unsigned mode,struct VesaModeInfoBlock *data)
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{
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struct LRMI_regs r;
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void *rm_space;
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int retval;
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if(!(rm_space = LRMI_alloc_real(sizeof(struct VesaModeInfoBlock)))) return VBE_OUT_OF_DOS_MEM;
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memset(&r,0,sizeof(struct LRMI_regs));
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r.eax = 0x4f01;
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r.ecx = mode;
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r.es = VirtToPhysSeg(rm_space);
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r.edi = VirtToPhysOff(rm_space);
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if(!LRMI_int(0x10,&r))
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{
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LRMI_free_real(rm_space);
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return VBE_VM86_FAIL;
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}
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retval = r.eax & 0xffff;
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if(retval == 0x4f)
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{
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retval = VBE_OK;
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memcpy(data,rm_space,sizeof(struct VesaModeInfoBlock));
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}
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return retval;
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}
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int vbeSetMode(unsigned mode,struct VesaCRTCInfoBlock *data)
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{
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struct LRMI_regs r;
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void *rm_space = NULL;
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int retval;
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memset(&r,0,sizeof(struct LRMI_regs));
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if(data)
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{
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if(!(rm_space = LRMI_alloc_real(sizeof(struct VesaCRTCInfoBlock)))) return VBE_OUT_OF_DOS_MEM;
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r.es = VirtToPhysSeg(rm_space);
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r.edi = VirtToPhysOff(rm_space);
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memcpy(rm_space,data,sizeof(struct VesaCRTCInfoBlock));
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}
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r.eax = 0x4f02;
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r.ebx = mode;
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retval = LRMI_int(0x10,&r);
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if(rm_space) LRMI_free_real(rm_space);
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if(!retval) return VBE_VM86_FAIL;
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retval = r.eax & 0xffff;
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if(retval == 0x4f) retval = VBE_OK;
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return retval;
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}
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int vbeGetMode(unsigned *mode)
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{
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struct LRMI_regs r;
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int retval;
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memset(&r,0,sizeof(struct LRMI_regs));
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r.eax = 0x4f03;
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if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
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retval = r.eax & 0xffff;
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if(retval == 0x4f)
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{
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*mode = r.ebx;
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retval = VBE_OK;
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}
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return retval;
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}
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int vbeSaveState(void **data)
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{
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struct LRMI_regs r;
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int retval;
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void *rm_space;
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memset(&r,0,sizeof(struct LRMI_regs));
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r.eax = 0x4f04;
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r.edx = 0x00;
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r.ecx = 0x0f;
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if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
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retval = r.eax & 0xffff;
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if(retval != 0x4f) return retval;
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if(!(rm_space = LRMI_alloc_real((r.ebx & 0xffff)*64))) return VBE_OUT_OF_DOS_MEM;
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r.eax = 0x4f04;
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r.edx = 0x01;
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r.ecx = 0x0f;
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r.es = VirtToPhysSeg(rm_space);
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r.edi = VirtToPhysOff(rm_space);
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if(!LRMI_int(0x10,&r))
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{
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LRMI_free_real(rm_space);
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return VBE_VM86_FAIL;
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}
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retval = r.eax & 0xffff;
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if(retval != 0x4f)
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{
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LRMI_free_real(rm_space);
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return retval;
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}
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*data = rm_space;
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return VBE_OK;
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}
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int vbeRestoreState(void *data)
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{
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struct LRMI_regs r;
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int retval;
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void *rm_space;
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memset(&r,0,sizeof(struct LRMI_regs));
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r.eax = 0x4f04;
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r.edx = 0x02;
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r.ecx = 0x0f;
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r.es = VirtToPhysSeg(data);
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r.edi = VirtToPhysOff(data);
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retval = LRMI_int(0x10,&r);
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LRMI_free_real(data);
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if(!retval) return VBE_VM86_FAIL;
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retval = r.eax & 0xffff;
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if(retval == 0x4f) retval = VBE_OK;
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return retval;
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}
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int vbeGetWindow(unsigned *win_num)
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{
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struct LRMI_regs r;
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int retval;
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memset(&r,0,sizeof(struct LRMI_regs));
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r.eax = 0x4f05;
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r.ebx = (*win_num & 0x0f) | 0x0100;
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if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
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retval = r.eax & 0xffff;
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if(retval == 0x4f)
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{
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*win_num = r.edx & 0xffff;
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retval = VBE_OK;
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}
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return retval;
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}
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int vbeSetWindow(unsigned win_num,unsigned win_gran)
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{
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int retval;
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#if 0
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if(vbe_pm_info.SetWindowCall)
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{
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/* 32-bit function call is much better of int 10h */
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__asm __volatile(
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"pushl %%ebx\n"
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"movl %1, %%ebx\n"
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::"a"(0x4f05),"S"(win_num & 0x0f),"d"(win_gran):"memory");
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(*vbe_pm_info.SetWindowCall)();
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__asm __volatile("popl %%ebx":"=a"(retval)::"memory");
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}
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else
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#endif
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{
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struct LRMI_regs r;
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memset(&r,0,sizeof(struct LRMI_regs));
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r.eax = 0x4f05;
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r.ebx = win_num & 0x0f;
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r.edx = win_gran;
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if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
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retval = r.eax & 0xffff;
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}
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if(retval == 0x4f) retval = VBE_OK;
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return retval;
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}
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struct realVesaProtModeInterface
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{
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unsigned short SetWindowCall;
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unsigned short SetDisplayStart;
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unsigned short SetPaletteData;
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unsigned short iopl_ports;
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}__attribute__((packed));
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int vbeGetProtModeInfo(struct VesaProtModeInterface *pm_info)
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{
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struct LRMI_regs r;
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int retval;
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struct realVesaProtModeInterface *rm_info;
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memset(&r,0,sizeof(struct LRMI_regs));
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r.eax = 0x4f0a;
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r.ebx = 0;
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if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
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retval = r.eax & 0xffff;
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if(retval == 0x4f)
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{
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rm_info = PhysToVirtSO(r.es,r.edi&0xffff);
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pm_info->SetWindowCall = PhysToVirtSO(r.es,rm_info->SetWindowCall);
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pm_info->SetDisplayStart = PhysToVirtSO(r.es,rm_info->SetDisplayStart);
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pm_info->SetPaletteData = PhysToVirtSO(r.es,rm_info->SetPaletteData);
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pm_info->iopl_ports = PhysToVirtSO(r.es,rm_info->iopl_ports);
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retval = VBE_OK;
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}
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return retval;
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}
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216
linux/vbelib.h
Normal file
216
linux/vbelib.h
Normal file
@ -0,0 +1,216 @@
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/*
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VESA VBE 2.0 compatible structures and definitions.
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You can redistribute this file under terms and conditions
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GNU General Public licence v2.
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Written by Nick Kurshev <nickols_k@mail.ru>
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*/
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#ifndef __VESA_VBELIB_INCLUDED__
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#define __VESA_VBELIB_INCLUDED__ 1
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/* Note: every pointer within structures is 32-bit protected mode pointer.
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So you don't need to convert it from real mode. */
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typedef struct tagFarPtr
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{
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unsigned short off;
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unsigned short seg;
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}FarPtr;
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struct VbeInfoBlock {
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char VESASignature[4]; /* 'VESA' 4 byte signature */
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short VESAVersion; /* VBE version number */
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char * OemStringPtr; /* Pointer to OEM string */
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long Capabilities; /* Capabilities of video card */
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unsigned short* VideoModePtr; /* Pointer to supported modes */
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short TotalMemory; /* Number of 64kb memory blocks */
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/* VBE 3.0 and above */
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short OemSoftwareRev;
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char * OemVendorNamePtr;
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char * OemProductNamePtr;
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char * OemProductRevPtr;
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char reserved[222];
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char OemData[256]; /* Pad to 512 byte block size */
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}__attribute__ ((packed));
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static inline FarPtr VirtToPhys(void *ptr)
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{
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FarPtr retval;
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retval.seg = ((unsigned long)ptr) >> 4;
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retval.off = ((unsigned long)ptr) & 0x0f;
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return retval;
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}
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static inline unsigned short VirtToPhysSeg(void *ptr)
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{
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return ((unsigned long)ptr) >> 4;
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}
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static inline unsigned short VirtToPhysOff(void *ptr)
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{
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return ((unsigned long)ptr) & 0x0f;
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}
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static inline void * PhysToVirt(FarPtr ptr)
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{
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return (void *)((ptr.seg << 4) | ptr.off);
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}
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static inline void * PhysToVirtSO(unsigned short seg,unsigned short off)
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{
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return (void *)((seg << 4) | off);
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}
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#define MODE_ATTR_MODE_SUPPORTED (1 << 0)
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#define MODE_ATTR_TTY (1 << 2)
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#define MODE_ATTR_COLOR (1 << 3)
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#define MODE_ATTR_GRAPHICS (1 << 4)
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#define MODE_ATTR_NOT_VGA (1 << 5)
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#define MODE_ATTR_NOT_WINDOWED (1 << 6)
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#define MODE_ATTR_LINEAR (1 << 7)
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#define MODE_ATTR_DOUBLESCAN (1 << 8)
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#define MODE_ATTR_INTERLACE (1 << 9)
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#define MODE_ATTR_TRIPLEBUFFER (1 << 10)
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#define MODE_ATTR_STEREOSCOPIC (1 << 11)
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#define MODE_ATTR_DUALDISPLAY (1 << 12)
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#define MODE_WIN_RELOCATABLE (1 << 0)
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#define MODE_WIN_READABLE (1 << 1)
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#define MODE_WIN_WRITEABLE (1 << 2)
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/* SuperVGA mode information block */
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struct VesaModeInfoBlock {
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unsigned short ModeAttributes; /* Mode attributes */
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unsigned char WinAAttributes; /* Window A attributes */
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unsigned char WinBAttributes; /* Window B attributes */
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unsigned short WinGranularity; /* Window granularity in k */
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unsigned short WinSize; /* Window size in k */
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unsigned short WinASegment; /* Window A segment */
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unsigned short WinBSegment; /* Window B segment */
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FarPtr WinFuncPtr; /* 16-bit far pointer to window function */
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unsigned short BytesPerScanLine; /* Bytes per scanline */
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/* VBE 1.2 and above */
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unsigned short XResolution; /* Horizontal resolution */
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unsigned short YResolution; /* Vertical resolution */
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unsigned char XCharSize; /* Character cell width */
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unsigned char YCharSize; /* Character cell height */
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unsigned char NumberOfPlanes; /* Number of memory planes */
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unsigned char BitsPerPixel; /* Bits per pixel */
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unsigned char NumberOfBanks; /* Number of CGA style banks */
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unsigned char MemoryModel; /* Memory model type */
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unsigned char BankSize; /* Size of CGA style banks */
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unsigned char NumberOfImagePages; /* Number of images pages */
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unsigned char res1; /* Reserved */
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/* Direct Color fields (required for direct/6 and YUV/7 memory models) */
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unsigned char RedMaskSize; /* Size of direct color red mask */
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unsigned char RedFieldPosition; /* Bit posn of lsb of red mask */
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unsigned char GreenMaskSize; /* Size of direct color green mask */
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unsigned char GreenFieldPosition; /* Bit posn of lsb of green mask */
|
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unsigned char BlueMaskSize; /* Size of direct color blue mask */
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unsigned char BlueFieldPosition; /* Bit posn of lsb of blue mask */
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unsigned char RsvdMaskSize; /* Size of direct color res mask */
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unsigned char RsvdFieldPosition; /* Bit posn of lsb of res mask */
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unsigned char DirectColorModeInfo; /* Direct color mode attributes */
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unsigned char res2[216]; /* Pad to 256 byte block size */
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/* VBE 2.0 and above */
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unsigned long PhysBasePtr; /* physical address for flat memory frame buffer. (Should be converted to linear before using) */
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unsigned short res3[3]; /* Reserved - always set to 0 */
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/* VBE 3.0 and above */
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unsigned short LinBytesPerScanLine; /* bytes per scan line for linear modes */
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unsigned char BnkNumberOfImagePages;/* number of images for banked modes */
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unsigned char LinNumberOfImagePages;/* number of images for linear modes */
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unsigned char LinRedMaskSize; /* size of direct color red mask (linear modes) */
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||||
unsigned char LinRedFieldPosition; /* bit position of lsb of red mask (linear modes) */
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unsigned char LinGreenMaskSize; /* size of direct color green mask (linear modes) */
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unsigned char LinGreenFieldPosition;/* bit position of lsb of green mask (linear modes) */
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unsigned char LinBlueMaskSize; /* size of direct color blue mask (linear modes) */
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unsigned char LinBlueFieldPosition;/* bit position of lsb of blue mask (linear modes) */
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unsigned char LinRsvdMaskSize; /* size of direct color reserved mask (linear modes) */
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||||
unsigned char LinRsvdFieldPosition;/* bit position of lsb of reserved mask (linear modes) */
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unsigned long MaxPixelClock; /* maximum pixel clock (in Hz) for graphics mode */
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||||
char res4[189]; /* remainder of ModeInfoBlock */
|
||||
}__attribute__ ((packed));
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||||
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typedef enum {
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memText= 0,
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memCGA = 1,
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memHercules = 2,
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memPL = 3, /* Planar memory model */
|
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memPK = 4, /* Packed pixel memory model */
|
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mem256 = 5,
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memRGB = 6, /* Direct color RGB memory model */
|
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memYUV = 7, /* Direct color YUV memory model */
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} memModels;
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||||
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struct VesaCRTCInfoBlock {
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unsigned short hTotal; /* Horizontal total in pixels */
|
||||
unsigned short hSyncStart; /* Horizontal sync start in pixels */
|
||||
unsigned short hSyncEnd; /* Horizontal sync end in pixels */
|
||||
unsigned short vTotal; /* Vertical total in lines */
|
||||
unsigned short vSyncStart; /* Vertical sync start in lines */
|
||||
unsigned short vSyncEnd; /* Vertical sync end in lines */
|
||||
unsigned char Flags; /* Flags (Interlaced, Double Scan etc) */
|
||||
unsigned long PixelClock; /* Pixel clock in units of Hz */
|
||||
unsigned short RefreshRate;/* Refresh rate in units of 0.01 Hz*/
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||||
unsigned char Reserved[40];/* remainder of CRTCInfoBlock*/
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}__attribute__ ((packed));
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#define VESA_CRTC_DOUBLESCAN 0x01
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#define VESA_CRTC_INTERLACED 0x02
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#define VESA_CRTC_HSYNC_NEG 0x04
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#define VESA_CRTC_VSYNC_NEG 0x08
|
||||
|
||||
#define VESA_MODE_CRTC_REFRESH (1 << 11)
|
||||
#define VESA_MODE_USE_LINEAR (1 << 14)
|
||||
#define VESA_MODE_NOT_CLEAR (1 << 15)
|
||||
|
||||
/* This will contain accesible 32-bit protmode pointers */
|
||||
struct VesaProtModeInterface
|
||||
{
|
||||
void (*SetWindowCall)(void);
|
||||
void (*SetDisplayStart)(void);
|
||||
void (*SetPaletteData)(void);
|
||||
unsigned short * iopl_ports;
|
||||
}__attribute__ ((packed));
|
||||
|
||||
/*
|
||||
All functions below return:
|
||||
0 if succesful
|
||||
0xffff if vm86 syscall error occurs
|
||||
0x4fxx if VESA error occurs
|
||||
*/
|
||||
|
||||
#define VBE_OK 0
|
||||
#define VBE_VM86_FAIL -1
|
||||
#define VBE_OUT_OF_DOS_MEM -2
|
||||
#define VBE_OUT_OF_MEM -3
|
||||
#define VBE_VESA_ERROR_MASK 0x4f00
|
||||
#define VBE_VESA_ERRCODE_MASK 0xff
|
||||
|
||||
extern int vbeInit( void );
|
||||
extern int vbeDetroy( void );
|
||||
|
||||
extern int vbeGetControllerInfo(struct VbeInfoBlock *);
|
||||
extern int vbeGetModeInfo(unsigned mode,struct VesaModeInfoBlock *);
|
||||
extern int vbeSetMode(unsigned mode,struct VesaCRTCInfoBlock *);
|
||||
extern int vbeGetMode(unsigned *mode);
|
||||
extern int vbeSaveState(void **data); /* note never copy this data */
|
||||
extern int vbeRestoreState(void *data);
|
||||
extern int vbeGetWindow(unsigned *win_num); /* win_A=0 or win_B=1 */
|
||||
extern int vbeSetWindow(unsigned win_num,unsigned win_gran);
|
||||
/*
|
||||
Func 0x06:
|
||||
Support of logical scan line length is not implemented.
|
||||
We assume that logical scan line length == physical scan line length.
|
||||
(Logical display memory == displayed area).
|
||||
*/
|
||||
/*
|
||||
Func 0x07:
|
||||
Support of disply start is not implemented.
|
||||
We assume that display start always == 0, 0.
|
||||
*/
|
||||
/*
|
||||
Func 0x08-0x09:
|
||||
Support of palette currently is not implemented.
|
||||
*/
|
||||
extern int vbeGetProtModeInfo(struct VesaProtModeInterface *);
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user