+++ /dev/null
-#include <stdio.h>
-#include <string.h>
-#include <stddef.h>
-#include <assert.h>
-#include "vbe.h"
-#include "cdpmi.h"
-#include "logger.h"
-
-
-#define FIXPTR(ptr) \
- do { \
- uint32_t paddr = (uint32_t)(ptr); \
- uint16_t pseg = paddr >> 16; \
- uint16_t poffs = paddr & 0xffff; \
- if(pseg == seg && poffs < 512) { \
- paddr = ((uint32_t)seg << 4) + poffs; \
- } else { \
- paddr = ((uint32_t)pseg << 4) + poffs; \
- } \
- (ptr) = (void*)phys_to_virt(paddr); \
- } while(0)
-
-/* hijack the "VESA" sig field, to pre-cache number of modes */
-#define NMODES(inf) *(uint16_t*)((inf)->sig)
-#define NACCMODES(inf) *(uint16_t*)((inf)->sig + 2)
-
-static int cur_pitch;
-/* TODO update cur_pitch on mode-change and on setscanlen */
-
-int vbe_info(struct vbe_info *info)
-{
- void *lowbuf;
- uint16_t seg, sel;
- uint16_t *modeptr;
- uint32_t offs;
- struct dpmi_regs regs = {0};
-
- assert(sizeof *info == 512);
-
- if(!(seg = dpmi_alloc(sizeof *info / 16, &sel))) {
- return -1;
- }
- lowbuf = (void*)phys_to_virt((uint32_t)seg << 4);
-
- memcpy(lowbuf, "VBE2", 4);
-
- regs.eax = 0x4f00;
- regs.es = seg;
- regs.edi = 0;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- errormsg("vbe_get_info (4f00) failed\n");
- dpmi_free(sel);
- return -1;
- }
-
- memcpy(info, lowbuf, sizeof *info);
- dpmi_free(sel);
-
- FIXPTR(info->oem_name);
- FIXPTR(info->vendor);
- FIXPTR(info->product);
- FIXPTR(info->revstr);
- FIXPTR(info->modes);
- /* implementations without the accel capability, will use the space taken
- * by the accel_modes pointer for other data (probably video modes). We
- * need to check for the capability before "fixing" this pointer, otherwise
- * we'll shuffle random data.
- */
- if(info->caps & VBE_ACCEL) {
- FIXPTR(info->accel_modes);
- }
-
- /* info->modes should be pointing somewhere at the end of the original
- * low memory buffer. make it point at the same offset in the info
- * buffer where we copied everything instead.
- */
- offs = (char*)info->modes - (char*)lowbuf;
- if(offs < sizeof *info) { /* this should always be true */
- info->modes = (uint16_t*)((char*)info + offs);
- }
-
- modeptr = info->modes;
- while(*modeptr != 0xffff) {
- if(modeptr - info->modes >= 256) {
- modeptr = info->modes;
- break;
- }
- modeptr++;
- }
- NMODES(info) = modeptr - info->modes;
-
- if(info->caps & VBE_ACCEL) {
- modeptr = info->accel_modes;
- while(*modeptr != 0xffff) {
- if(modeptr - info->accel_modes >= 256) {
- modeptr = info->accel_modes;
- break;
- }
- modeptr++;
- }
- NACCMODES(info) = modeptr - info->accel_modes;
- }
- return 0;
-}
-
-int vbe_num_modes(struct vbe_info *info)
-{
- return NMODES(info);
-}
-
-int vbe_mode_info(int mode, struct vbe_mode_info *minf)
-{
- void *lowbuf;
- uint16_t seg, sel;
- struct dpmi_regs regs = {0};
-
- assert(sizeof *minf == 256);
- assert(offsetof(struct vbe_mode_info, max_pixel_clock) == 0x3e);
-
- if(!(seg = dpmi_alloc(sizeof *minf / 16, &sel))) {
- return -1;
- }
- lowbuf = (void*)phys_to_virt((uint32_t)seg << 4);
-
- regs.eax = 0x4f01;
- regs.ecx = mode;
- regs.es = seg;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- errormsg("vbe_mode_info (4f01) failed\n");
- dpmi_free(sel);
- return -1;
- }
-
- memcpy(minf, lowbuf, sizeof *minf);
- dpmi_free(sel);
- return 0;
-}
-
-void vbe_print_info(FILE *fp, struct vbe_info *vinf)
-{
- infomsg("vbe version: %u.%u\n", VBE_VER_MAJOR(vinf->ver), VBE_VER_MINOR(vinf->ver));
- if(VBE_VER_MAJOR(vinf->ver) >= 2) {
- infomsg("%s - %s (%s)\n", vinf->vendor, vinf->product, vinf->revstr);
- if(vinf->caps & VBE_ACCEL) {
- infomsg("vbe/af %d.%d\n", VBE_VER_MAJOR(vinf->accel_ver), VBE_VER_MINOR(vinf->accel_ver));
- }
- } else {
- infomsg("oem: %s\n", vinf->oem_name);
- }
- infomsg("video memory: %dkb\n", vinf->vmem_blk * 64);
-
- if(vinf->caps) {
- infomsg("caps:");
- if(vinf->caps & VBE_8BIT_DAC) infomsg(" dac8");
- if(vinf->caps & VBE_NON_VGA) infomsg(" non-vga");
- if(vinf->caps & VBE_DAC_BLANK) infomsg(" dac-blank");
- if(vinf->caps & VBE_ACCEL) infomsg(" af");
- if(vinf->caps & VBE_MUSTLOCK) infomsg(" af-lock");
- if(vinf->caps & VBE_HWCURSOR) infomsg(" af-curs");
- if(vinf->caps & VBE_HWCLIP) infomsg(" af-clip");
- if(vinf->caps & VBE_TRANSP_BLT) infomsg(" af-tblt");
- infomsg("\n");
- }
-
- infomsg("%d video modes available\n", NMODES(vinf));
- if(vinf->caps & VBE_ACCEL) {
- infomsg("%d accelerated (VBE/AF) modes available\n", NACCMODES(vinf));
- }
- /*fflush(fp);*/
-}
-
-void vbe_print_mode_info(FILE *fp, struct vbe_mode_info *minf)
-{
- infomsg("%dx%d %dbpp", minf->xres, minf->yres, minf->bpp);
-
- switch(minf->mem_model) {
- case VBE_TYPE_DIRECT:
- infomsg(" (rgb");
- if(0) {
- case VBE_TYPE_YUV:
- infomsg(" (yuv");
- }
- infomsg(" %d%d%d)", minf->rsize, minf->gsize, minf->bsize);
- break;
- case VBE_TYPE_PLANAR:
- infomsg(" (%d planes)", minf->num_planes);
- break;
- case VBE_TYPE_PACKED:
- infomsg(" (packed)");
- break;
- case VBE_TYPE_TEXT:
- infomsg(" (%dx%d cells)", minf->xcharsz, minf->ycharsz);
- break;
- case VBE_TYPE_CGA:
- infomsg(" (CGA)");
- break;
- case VBE_TYPE_UNCHAIN:
- infomsg(" (unchained-%d)", minf->num_planes);
- break;
- }
- infomsg(" %dpg", minf->num_img_pages);
-
- if(minf->attr & VBE_ATTR_LFB) {
- infomsg(" lfb@%lx", (unsigned long)minf->fb_addr);
- } else {
- infomsg(" (%dk gran)", (int)minf->win_gran);
- }
-
- infomsg(" [");
- if(minf->attr & VBE_ATTR_AVAIL) infomsg(" avail");
- if(minf->attr & VBE_ATTR_OPTINFO) infomsg(" opt");
- if(minf->attr & VBE_ATTR_TTY) infomsg(" tty");
- if(minf->attr & VBE_ATTR_COLOR) infomsg(" color");
- if(minf->attr & VBE_ATTR_GFX) infomsg(" gfx");
- if(minf->attr & VBE_ATTR_NOTVGA) infomsg(" non-vga");
- if(minf->attr & VBE_ATTR_BANKED) infomsg(" banked");
- if(minf->attr & VBE_ATTR_LFB) infomsg(" lfb");
- if(minf->attr & VBE_ATTR_DBLSCAN) infomsg(" dblscan");
- if(minf->attr & VBE_ATTR_ILACE) infomsg(" ilace");
- if(minf->attr & VBE_ATTR_TRIPLEBUF) infomsg(" trplbuf");
- if(minf->attr & VBE_ATTR_STEREO) infomsg(" stereo");
- if(minf->attr & VBE_ATTR_STEREO_2FB) infomsg(" stdual");
- infomsg(" ]\n");
- /*fflush(fp);*/
-}
-
-int vbe_setmode(uint16_t mode)
-{
- struct dpmi_regs regs = {0};
-
- regs.eax = 0x4f02;
- regs.ebx = mode;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
-
- cur_pitch = vbe_getpitch();
- return 0;
-}
-
-int vbe_setmode_crtc(uint16_t mode, struct vbe_crtc_info *crtc)
-{
- void *lowbuf;
- uint16_t seg, sel;
- struct dpmi_regs regs = {0};
-
- assert(sizeof *crtc == 59);
-
- if(!(seg = dpmi_alloc((sizeof *crtc + 15) / 16, &sel))) {
- return -1;
- }
- lowbuf = (void*)phys_to_virt((uint32_t)seg << 4);
-
- memcpy(lowbuf, crtc, sizeof *crtc);
-
- regs.eax = 0x4f02;
- regs.ebx = mode;
- regs.es = seg;
- dpmi_int(0x10, ®s);
-
- dpmi_free(sel);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
-
- cur_pitch = vbe_getpitch();
- return 0;
-}
-
-int vbe_getmode(void)
-{
- struct dpmi_regs regs = {0};
-
- regs.eax = 0x4f03;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
- return regs.ebx & 0xffff;
-}
-
-int vbe_state_size(unsigned int flags)
-{
- struct dpmi_regs regs = {0};
-
- regs.eax = 0x4f04;
- regs.edx = 0;
- regs.ecx = flags;
- dpmi_int(0x10, ®s);
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
- return (regs.ebx & 0xffff) * 64;
-}
-
-int vbe_save(void *stbuf, int sz, unsigned int flags)
-{
- void *lowbuf;
- uint16_t seg, sel;
- struct dpmi_regs regs = {0};
-
- if(!(seg = dpmi_alloc((sz + 15) / 16, &sel))) {
- return -1;
- }
- lowbuf = (void*)phys_to_virt((uint32_t)seg << 4);
-
- regs.eax = 0x4f04;
- regs.edx = 1; /* save */
- regs.ecx = flags;
- regs.es = seg;
- dpmi_int(0x10, ®s);
- if((regs.eax & 0xffff) != 0x4f) {
- dpmi_free(sel);
- return -1;
- }
-
- memcpy(stbuf, lowbuf, sz);
- dpmi_free(sel);
- return 0;
-}
-
-int vbe_restore(void *stbuf, int sz, unsigned int flags)
-{
- void *lowbuf;
- uint16_t seg, sel;
- struct dpmi_regs regs = {0};
-
- if(!(seg = dpmi_alloc((sz + 15) / 16, &sel))) {
- return -1;
- }
- lowbuf = (void*)phys_to_virt((uint32_t)seg << 4);
-
- memcpy(lowbuf, stbuf, sz);
-
- regs.eax = 0x4f04;
- regs.edx = 2; /* restore */
- regs.ecx = flags;
- regs.es = seg;
- dpmi_int(0x10, ®s);
- dpmi_free(sel);
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
- return 0;
-}
-
-int vbe_setwin(int wid, int pos)
-{
- struct dpmi_regs regs;
-
- if(wid & ~1) return -1;
-
- regs.eax = 0x4f05;
- regs.ebx = wid;
- regs.edx = pos;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
- return 0;
-}
-
-int vbe_getwin(int wid)
-{
- struct dpmi_regs regs;
-
- if(wid & ~1) return -1;
-
- regs.eax = 0x4f05;
- regs.ebx = wid;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
-
- return regs.edx & 0xffff;
-}
-
-int vbe_setscanlen(int len_pix)
-{
- struct dpmi_regs regs;
-
- regs.eax = 0x4f06;
- regs.ebx = 0; /* set scanline length in pixels */
- regs.ecx = len_pix;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
-
- cur_pitch = vbe_getpitch();
- return regs.ecx;
-}
-
-int vbe_getscanlen(void)
-{
- struct dpmi_regs regs;
-
- regs.eax = 0x4f06;
- regs.ebx = 1; /* get scanline length */
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
- return regs.ecx;
-}
-
-int vbe_getpitch(void)
-{
- struct dpmi_regs regs;
-
- regs.eax = 0x4f06;
- regs.ebx = 1; /* get scanline length */
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
- return regs.ebx;
-}
-
-int vbe_scanline_info(struct vbe_scanline_info *sinf)
-{
- struct dpmi_regs regs;
-
- regs.eax = 0x4f06;
- regs.ebx = 1; /* get scanline length */
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
-
- sinf->size = regs.ebx & 0xffff;
- sinf->num_pixels = regs.ecx & 0xffff;
- sinf->max_scanlines = regs.edx & 0xffff;
- return 0;
-}
-
-enum {
- SDISP_SET = 0x00,
- SDISP_GET = 0x01,
- SDISP_ALTSET = 0x02,
- SDISP_SET_STEREO = 0x03,
- SDISP_GETSCHED = 0x04,
- SDISP_STEREO_ON = 0x05,
- SDISP_STEREO_OFF = 0x06,
- SDISP_SET_VBLANK = 0x80,
- SDISP_ALTSET_VBLANK = 0x82,
- SDISP_SET_STEREO_VBLANK = 0x83
-};
-
-int vbe_setdisp(int x, int y, int when)
-{
- struct dpmi_regs regs;
-
- regs.eax = 0x4f07;
- regs.ebx = (when == VBE_SWAP_VBLANK) ? SDISP_SET_VBLANK : SDISP_SET;
- regs.ecx = x;
- regs.edx = y;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
- return 0;
-}
-
-int vbe_swap(uint32_t voffs, int when)
-{
- struct dpmi_regs regs;
- int op;
-
- switch(when) {
- case VBE_SWAP_ASYNC:
- op = SDISP_ALTSET;
- break;
-
- case VBE_SWAP_NOW:
- /* XXX is this the only way? */
- return vbe_setdisp(voffs % cur_pitch, voffs / cur_pitch, when);
-
- case VBE_SWAP_VBLANK:
- default:
- op = SDISP_ALTSET_VBLANK;
- break;
- }
-
-
- regs.eax = 0x4f07;
- regs.ebx = op;
- regs.ecx = voffs;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return -1;
- }
- return 0;
-}
-
-int vbe_swap_pending(void)
-{
- struct dpmi_regs regs;
-
- regs.eax = 0x4f07;
- regs.ebx = SDISP_GETSCHED;
- dpmi_int(0x10, ®s);
-
- if((regs.eax & 0xffff) != 0x4f) {
- return 0;
- }
- return regs.ecx;
-}
projects / retroray / blobdiff