#include "biosvar.h" // GET_BDA
#include "util.h" // memset_far
-#include "vgatables.h" // find_vga_entry
-
-// TODO
-// * extract hw code from framebuffer code
-// * use clear_screen() in scroll code
-// * normalize params (don't use AX/BX/CX/etc.)
-
-// XXX
-inline void
-memcpy16_far(u16 d_seg, void *d_far, u16 s_seg, const void *s_far, size_t len)
-{
- memcpy_far(d_seg, d_far, s_seg, s_far, len);
-}
+#include "stdvga.h" // stdvga_planar4_plane
/****************************************************************
* Screen scrolling
****************************************************************/
-static void
-vgamem_copy_pl4(u8 xstart, u8 ysrc, u8 ydest, u8 cols, u8 nbcols,
- u8 cheight)
+static inline void *
+memcpy_stride(u16 seg, void *dst, void *src, int copylen, int stride, int lines)
{
- u16 src = ysrc * cheight * nbcols + xstart;
- u16 dest = ydest * cheight * nbcols + xstart;
- outw(0x0105, VGAREG_GRDC_ADDRESS);
- u8 i;
- for (i = 0; i < cheight; i++)
- memcpy_far(SEG_GRAPH, (void*)(dest + i * nbcols)
- , SEG_GRAPH, (void*)(src + i * nbcols), cols);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
+ for (; lines; lines--, dst+=stride, src+=stride)
+ memcpy_far(seg, dst, seg, src, copylen);
+ return dst;
}
-static void
-vgamem_fill_pl4(u8 xstart, u8 ystart, u8 cols, u8 nbcols, u8 cheight,
- u8 attr)
+static inline void
+memset_stride(u16 seg, void *dst, u8 val, int setlen, int stride, int lines)
{
- u16 dest = ystart * cheight * nbcols + xstart;
- outw(0x0205, VGAREG_GRDC_ADDRESS);
- u8 i;
- for (i = 0; i < cheight; i++)
- memset_far(SEG_GRAPH, (void*)(dest + i * nbcols), attr, cols);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
+ for (; lines; lines--, dst+=stride)
+ memset_far(seg, dst, val, setlen);
+}
+
+static inline void
+memset16_stride(u16 seg, void *dst, u16 val, int setlen, int stride, int lines)
+{
+ for (; lines; lines--, dst+=stride)
+ memset16_far(seg, dst, val, setlen);
}
static void
scroll_pl4(struct vgamode_s *vmode_g, int nblines, int attr
, struct cursorpos ul, struct cursorpos lr)
{
- if (attr < 0)
- attr = 0;
- u8 dir = SCROLL_UP;
- if (nblines < 0) {
+ int cheight = GET_GLOBAL(vmode_g->cheight);
+ int cwidth = 1;
+ int stride = GET_BDA(video_cols) * cwidth;
+ void *src_far, *dest_far;
+ if (nblines >= 0) {
+ dest_far = (void*)(ul.y * cheight * stride + ul.x * cwidth);
+ src_far = dest_far + nblines * cheight * stride;
+ } else {
+ // Scroll down
nblines = -nblines;
- dir = SCROLL_DOWN;
+ dest_far = (void*)(lr.y * cheight * stride + ul.x * cwidth);
+ src_far = dest_far - nblines * cheight * stride;
+ stride = -stride;
}
- // Get the dimensions
- u16 nbcols = GET_BDA(video_cols);
- u8 cols = lr.x - ul.x + 1;
-
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- u8 cheight = GET_GLOBAL(vparam_g->cheight);
- if (dir == SCROLL_UP) {
- u16 i;
- for (i = ul.y; i <= lr.y; i++)
- if (i + nblines > lr.y)
- vgamem_fill_pl4(ul.x, i, cols, nbcols, cheight,
- attr);
- else
- vgamem_copy_pl4(ul.x, i + nblines, i, cols,
- nbcols, cheight);
- return;
+ if (attr < 0)
+ attr = 0;
+ int cols = lr.x - ul.x + 1;
+ int rows = lr.y - ul.y + 1;
+ int i;
+ for (i=0; i<4; i++) {
+ stdvga_planar4_plane(i);
+ void *dest = dest_far;
+ if (nblines < rows)
+ dest = memcpy_stride(SEG_GRAPH, dest, src_far, cols * cwidth
+ , stride, (rows - nblines) * cheight);
+ u8 pixels = (attr & (1<<i)) ? 0xff : 0x00;
+ memset_stride(SEG_GRAPH, dest, pixels, cols * cwidth
+ , stride, nblines * cheight);
}
- u16 i;
- for (i = lr.y; i >= ul.y; i--)
- if (i < ul.y + nblines)
- vgamem_fill_pl4(ul.x, i, cols, nbcols, cheight,
- attr);
- else
- vgamem_copy_pl4(ul.x, i, i - nblines, cols,
- nbcols, cheight);
-}
-
-static void
-vgamem_copy_cga(u8 xstart, u8 ysrc, u8 ydest, u8 cols, u8 nbcols,
- u8 cheight)
-{
- u16 src = ((ysrc * cheight * nbcols) >> 1) + xstart;
- u16 dest = ((ydest * cheight * nbcols) >> 1) + xstart;
- u8 i;
- for (i = 0; i < cheight; i++)
- if (i & 1)
- memcpy_far(SEG_CTEXT, (void*)(0x2000 + dest + (i >> 1) * nbcols)
- , SEG_CTEXT, (void*)(0x2000 + src + (i >> 1) * nbcols)
- , cols);
- else
- memcpy_far(SEG_CTEXT, (void*)(dest + (i >> 1) * nbcols)
- , SEG_CTEXT, (void*)(src + (i >> 1) * nbcols), cols);
-}
-
-static void
-vgamem_fill_cga(u8 xstart, u8 ystart, u8 cols, u8 nbcols, u8 cheight,
- u8 attr)
-{
- u16 dest = ((ystart * cheight * nbcols) >> 1) + xstart;
- u8 i;
- for (i = 0; i < cheight; i++)
- if (i & 1)
- memset_far(SEG_CTEXT, (void*)(0x2000 + dest + (i >> 1) * nbcols)
- , attr, cols);
- else
- memset_far(SEG_CTEXT, (void*)(dest + (i >> 1) * nbcols), attr, cols);
+ stdvga_planar4_plane(-1);
}
static void
scroll_cga(struct vgamode_s *vmode_g, int nblines, int attr
, struct cursorpos ul, struct cursorpos lr)
{
- if (attr < 0)
- attr = 0;
- u8 dir = SCROLL_UP;
- if (nblines < 0) {
+ int cheight = GET_GLOBAL(vmode_g->cheight) / 2;
+ int cwidth = GET_GLOBAL(vmode_g->depth);
+ int stride = GET_BDA(video_cols) * cwidth;
+ void *src_far, *dest_far;
+ if (nblines >= 0) {
+ dest_far = (void*)(ul.y * cheight * stride + ul.x * cwidth);
+ src_far = dest_far + nblines * cheight * stride;
+ } else {
+ // Scroll down
nblines = -nblines;
- dir = SCROLL_DOWN;
+ dest_far = (void*)(lr.y * cheight * stride + ul.x * cwidth);
+ src_far = dest_far - nblines * cheight * stride;
+ stride = -stride;
}
- // Get the dimensions
- u16 nbcols = GET_BDA(video_cols);
- u8 cols = lr.x - ul.x + 1;
-
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- u8 cheight = GET_GLOBAL(vparam_g->cheight);
- u8 bpp = GET_GLOBAL(vmode_g->pixbits);
- if (bpp == 2) {
- ul.x <<= 1;
- cols <<= 1;
- nbcols <<= 1;
+ if (attr < 0)
+ attr = 0;
+ int cols = lr.x - ul.x + 1;
+ int rows = lr.y - ul.y + 1;
+ if (nblines < rows) {
+ memcpy_stride(SEG_CTEXT, dest_far+0x2000, src_far+0x2000, cols * cwidth
+ , stride, (rows - nblines) * cheight);
+ dest_far = memcpy_stride(SEG_CTEXT, dest_far, src_far, cols * cwidth
+ , stride, (rows - nblines) * cheight);
}
- // if Scroll up
- if (dir == SCROLL_UP) {
- u16 i;
- for (i = ul.y; i <= lr.y; i++)
- if (i + nblines > lr.y)
- vgamem_fill_cga(ul.x, i, cols, nbcols, cheight,
- attr);
- else
- vgamem_copy_cga(ul.x, i + nblines, i, cols,
- nbcols, cheight);
- return;
+ memset_stride(SEG_CTEXT, dest_far + 0x2000, attr, cols * cwidth
+ , stride, nblines * cheight);
+ memset_stride(SEG_CTEXT, dest_far, attr, cols * cwidth
+ , stride, nblines * cheight);
+}
+
+static void
+scroll_lin(struct vgamode_s *vmode_g, int nblines, int attr
+ , struct cursorpos ul, struct cursorpos lr)
+{
+ int cheight = 8;
+ int cwidth = 8;
+ int stride = GET_BDA(video_cols) * cwidth;
+ void *src_far, *dest_far;
+ if (nblines >= 0) {
+ dest_far = (void*)(ul.y * cheight * stride + ul.x * cwidth);
+ src_far = dest_far + nblines * cheight * stride;
+ } else {
+ // Scroll down
+ nblines = -nblines;
+ dest_far = (void*)(lr.y * cheight * stride + ul.x * cwidth);
+ src_far = dest_far - nblines * cheight * stride;
+ stride = -stride;
}
- u16 i;
- for (i = lr.y; i >= ul.y; i--)
- if (i < ul.y + nblines)
- vgamem_fill_cga(ul.x, i, cols, nbcols, cheight,
- attr);
- else
- vgamem_copy_cga(ul.x, i, i - nblines, cols,
- nbcols, cheight);
+ if (attr < 0)
+ attr = 0;
+ int cols = lr.x - ul.x + 1;
+ int rows = lr.y - ul.y + 1;
+ if (nblines < rows)
+ dest_far = memcpy_stride(SEG_GRAPH, dest_far, src_far, cols * cwidth
+ , stride, (rows - nblines) * cheight);
+ memset_stride(SEG_GRAPH, dest_far, attr, cols * cwidth
+ , stride, nblines * cheight);
}
static void
scroll_text(struct vgamode_s *vmode_g, int nblines, int attr
, struct cursorpos ul, struct cursorpos lr)
{
- if (attr < 0)
- attr = 0x07;
- u8 dir = SCROLL_UP;
- if (nblines < 0) {
+ int cheight = 1;
+ int cwidth = 2;
+ int stride = GET_BDA(video_cols) * cwidth;
+ void *src_far, *dest_far = (void*)(GET_BDA(video_pagesize) * ul.page);
+ if (nblines >= 0) {
+ dest_far += ul.y * cheight * stride + ul.x * cwidth;
+ src_far = dest_far + nblines * cheight * stride;
+ } else {
+ // Scroll down
nblines = -nblines;
- dir = SCROLL_DOWN;
+ dest_far += lr.y * cheight * stride + ul.x * cwidth;
+ src_far = dest_far - nblines * cheight * stride;
+ stride = -stride;
}
- // Get the dimensions
- u16 nbrows = GET_BDA(video_rows) + 1;
- u16 nbcols = GET_BDA(video_cols);
- u8 cols = lr.x - ul.x + 1;
-
- // Compute the address
- void *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, ul.page));
- dprintf(3, "Scroll, address %p (%d %d %02x)\n"
- , address_far, nbrows, nbcols, ul.page);
-
- if (dir == SCROLL_UP) {
- u16 i;
- for (i = ul.y; i <= lr.y; i++)
- if (i + nblines > lr.y)
- memset16_far(GET_GLOBAL(vmode_g->sstart)
- , address_far + (i * nbcols + ul.x) * 2
- , (u16)attr * 0x100 + ' ', cols * 2);
- else
- memcpy16_far(GET_GLOBAL(vmode_g->sstart)
- , address_far + (i * nbcols + ul.x) * 2
- , GET_GLOBAL(vmode_g->sstart)
- , (void*)(((i + nblines) * nbcols + ul.x) * 2)
- , cols * 2);
- return;
- }
- u16 i;
- for (i = lr.y; i >= ul.y; i--)
- if (i < ul.y + nblines)
- memset16_far(GET_GLOBAL(vmode_g->sstart)
- , address_far + (i * nbcols + ul.x) * 2
- , (u16)attr * 0x100 + ' ', cols * 2);
- else
- memcpy16_far(GET_GLOBAL(vmode_g->sstart)
- , address_far + (i * nbcols + ul.x) * 2
- , GET_GLOBAL(vmode_g->sstart)
- , (void*)(((i - nblines) * nbcols + ul.x) * 2)
- , cols * 2);
+ if (attr < 0)
+ attr = 0x07;
+ attr = (attr << 8) | ' ';
+ int cols = lr.x - ul.x + 1;
+ int rows = lr.y - ul.y + 1;
+ u16 seg = GET_GLOBAL(vmode_g->sstart);
+ if (nblines < rows)
+ dest_far = memcpy_stride(seg, dest_far, src_far, cols * cwidth
+ , stride, (rows - nblines) * cheight);
+ memset16_stride(seg, dest_far, attr, cols * cwidth
+ , stride, nblines * cheight);
}
void
vgafb_scroll(int nblines, int attr, struct cursorpos ul, struct cursorpos lr)
{
// Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+ struct vgamode_s *vmode_g = get_current_mode();
if (!vmode_g)
return;
// FIXME gfx mode not complete
switch (GET_GLOBAL(vmode_g->memmodel)) {
- case CTEXT:
- case MTEXT:
+ case MM_TEXT:
scroll_text(vmode_g, nblines, attr, ul, lr);
break;
- case PLANAR4:
- case PLANAR1:
+ case MM_PLANAR:
scroll_pl4(vmode_g, nblines, attr, ul, lr);
break;
- case CGA:
+ case MM_CGA:
scroll_cga(vmode_g, nblines, attr, ul, lr);
break;
- default:
- dprintf(1, "Scroll in graphics mode\n");
- }
-}
-
-void
-clear_screen(struct vgamode_s *vmode_g)
-{
- switch (GET_GLOBAL(vmode_g->memmodel)) {
- case CTEXT:
- case MTEXT:
- memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0720, 32*1024);
- break;
- case CGA:
- memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0000, 32*1024);
+ case MM_DIRECT:
+ case MM_PACKED:
+ scroll_lin(vmode_g, nblines, attr, ul, lr);
break;
- default: {
- outb(0x02, VGAREG_SEQU_ADDRESS);
- u8 mmask = inb(VGAREG_SEQU_DATA);
- outb(0x0f, VGAREG_SEQU_DATA); // all planes
- memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0000, 64*1024);
- outb(mmask, VGAREG_SEQU_DATA);
- }
}
}
if (cp.x >= nbcols)
return;
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- u8 cheight = GET_GLOBAL(vparam_g->cheight);
+ u8 cheight = GET_GLOBAL(vmode_g->cheight);
u8 *fdata_g;
switch (cheight) {
case 14:
}
u16 addr = cp.x + cp.y * cheight * nbcols;
u16 src = ca.car * cheight;
- outw(0x0f02, VGAREG_SEQU_ADDRESS);
- outw(0x0205, VGAREG_GRDC_ADDRESS);
- if (ca.attr & 0x80)
- outw(0x1803, VGAREG_GRDC_ADDRESS);
- else
- outw(0x0003, VGAREG_GRDC_ADDRESS);
- u8 i;
- for (i = 0; i < cheight; i++) {
- u8 *dest_far = (void*)(addr + i * nbcols);
- u8 j;
- for (j = 0; j < 8; j++) {
- u8 mask = 0x80 >> j;
- outw((mask << 8) | 0x08, VGAREG_GRDC_ADDRESS);
- GET_FARVAR(SEG_GRAPH, *dest_far);
- if (GET_GLOBAL(fdata_g[src + i]) & mask)
- SET_FARVAR(SEG_GRAPH, *dest_far, ca.attr & 0x0f);
- else
- SET_FARVAR(SEG_GRAPH, *dest_far, 0x00);
+ int i;
+ for (i=0; i<4; i++) {
+ stdvga_planar4_plane(i);
+ u8 colors = ((ca.attr & (1<<i)) ? 0xff : 0x00);
+ int j;
+ for (j = 0; j < cheight; j++) {
+ u8 *dest_far = (void*)(addr + j * nbcols);
+ u8 pixels = colors & GET_GLOBAL(fdata_g[src + j]);
+ if (ca.attr & 0x80)
+ pixels ^= GET_FARVAR(SEG_GRAPH, *dest_far);
+ SET_FARVAR(SEG_GRAPH, *dest_far, pixels);
}
}
- outw(0xff08, VGAREG_GRDC_ADDRESS);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
- outw(0x0003, VGAREG_GRDC_ADDRESS);
+ stdvga_planar4_plane(-1);
}
static void
return;
u8 *fdata_g = vgafont8;
- u8 bpp = GET_GLOBAL(vmode_g->pixbits);
+ u8 bpp = GET_GLOBAL(vmode_g->depth);
u16 addr = (cp.x * bpp) + cp.y * 320;
u16 src = ca.car * 8;
u8 i;
write_text_char(struct vgamode_s *vmode_g
, struct cursorpos cp, struct carattr ca)
{
- // Get the dimensions
- u16 nbrows = GET_BDA(video_rows) + 1;
- u16 nbcols = GET_BDA(video_cols);
-
// Compute the address
- void *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, cp.page)
+ u16 nbcols = GET_BDA(video_cols);
+ void *address_far = (void*)(GET_BDA(video_pagesize) * cp.page
+ (cp.x + cp.y * nbcols) * 2);
if (ca.use_attr) {
vgafb_write_char(struct cursorpos cp, struct carattr ca)
{
// Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+ struct vgamode_s *vmode_g = get_current_mode();
if (!vmode_g)
return;
// FIXME gfx mode not complete
switch (GET_GLOBAL(vmode_g->memmodel)) {
- case CTEXT:
- case MTEXT:
+ case MM_TEXT:
write_text_char(vmode_g, cp, ca);
break;
- case PLANAR4:
- case PLANAR1:
+ case MM_PLANAR:
write_gfx_char_pl4(vmode_g, cp, ca);
break;
- case CGA:
+ case MM_CGA:
write_gfx_char_cga(vmode_g, cp, ca);
break;
- case LINEAR8:
+ case MM_DIRECT:
+ case MM_PACKED:
write_gfx_char_lin(vmode_g, cp, ca);
break;
}
vgafb_read_char(struct cursorpos cp)
{
// Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+ struct vgamode_s *vmode_g = get_current_mode();
if (!vmode_g)
goto fail;
- if (!(GET_GLOBAL(vmode_g->memmodel) & TEXT)) {
+ if (GET_GLOBAL(vmode_g->memmodel) != MM_TEXT) {
// FIXME gfx mode
dprintf(1, "Read char in graphics mode\n");
goto fail;
}
- // Get the dimensions
- u16 nbrows = GET_BDA(video_rows) + 1;
- u16 nbcols = GET_BDA(video_cols);
-
// Compute the address
- u16 *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, cp.page)
+ u16 nbcols = GET_BDA(video_cols);
+ u16 *address_far = (void*)(GET_BDA(video_pagesize) * cp.page
+ (cp.x + cp.y * nbcols) * 2);
u16 v = GET_FARVAR(GET_GLOBAL(vmode_g->sstart), *address_far);
struct carattr ca = {v, v>>8, 0};
****************************************************************/
void
-biosfn_write_pixel(u8 BH, u8 AL, u16 CX, u16 DX)
+vgafb_write_pixel(u8 color, u16 x, u16 y)
{
// Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+ struct vgamode_s *vmode_g = get_current_mode();
if (!vmode_g)
return;
- if (GET_GLOBAL(vmode_g->memmodel) & TEXT)
- return;
- u8 *addr_far, mask, attr, data;
+ u8 *addr_far, mask, attr, data, i;
switch (GET_GLOBAL(vmode_g->memmodel)) {
- case PLANAR4:
- case PLANAR1:
- addr_far = (void*)(CX / 8 + DX * GET_BDA(video_cols));
- mask = 0x80 >> (CX & 0x07);
- outw((mask << 8) | 0x08, VGAREG_GRDC_ADDRESS);
- outw(0x0205, VGAREG_GRDC_ADDRESS);
- data = GET_FARVAR(SEG_GRAPH, *addr_far);
- if (AL & 0x80)
- outw(0x1803, VGAREG_GRDC_ADDRESS);
- SET_FARVAR(SEG_GRAPH, *addr_far, AL);
- outw(0xff08, VGAREG_GRDC_ADDRESS);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
- outw(0x0003, VGAREG_GRDC_ADDRESS);
+ case MM_PLANAR:
+ addr_far = (void*)(x / 8 + y * GET_BDA(video_cols));
+ mask = 0x80 >> (x & 0x07);
+ for (i=0; i<4; i++) {
+ stdvga_planar4_plane(i);
+ u8 colors = (color & (1<<i)) ? 0xff : 0x00;
+ u8 orig = GET_FARVAR(SEG_GRAPH, *addr_far);
+ if (color & 0x80)
+ colors ^= orig;
+ SET_FARVAR(SEG_GRAPH, *addr_far, (colors & mask) | (orig & ~mask));
+ }
+ stdvga_planar4_plane(-1);
break;
- case CGA:
- if (GET_GLOBAL(vmode_g->pixbits) == 2)
- addr_far = (void*)((CX >> 2) + (DX >> 1) * 80);
+ case MM_CGA:
+ if (GET_GLOBAL(vmode_g->depth) == 2)
+ addr_far = (void*)((x >> 2) + (y >> 1) * 80);
else
- addr_far = (void*)((CX >> 3) + (DX >> 1) * 80);
- if (DX & 1)
+ addr_far = (void*)((x >> 3) + (y >> 1) * 80);
+ if (y & 1)
addr_far += 0x2000;
data = GET_FARVAR(SEG_CTEXT, *addr_far);
- if (GET_GLOBAL(vmode_g->pixbits) == 2) {
- attr = (AL & 0x03) << ((3 - (CX & 0x03)) * 2);
- mask = 0x03 << ((3 - (CX & 0x03)) * 2);
+ if (GET_GLOBAL(vmode_g->depth) == 2) {
+ attr = (color & 0x03) << ((3 - (x & 0x03)) * 2);
+ mask = 0x03 << ((3 - (x & 0x03)) * 2);
} else {
- attr = (AL & 0x01) << (7 - (CX & 0x07));
- mask = 0x01 << (7 - (CX & 0x07));
+ attr = (color & 0x01) << (7 - (x & 0x07));
+ mask = 0x01 << (7 - (x & 0x07));
}
- if (AL & 0x80) {
+ if (color & 0x80) {
data ^= attr;
} else {
data &= ~mask;
}
SET_FARVAR(SEG_CTEXT, *addr_far, data);
break;
- case LINEAR8:
- addr_far = (void*)(CX + DX * (GET_BDA(video_cols) * 8));
- SET_FARVAR(SEG_GRAPH, *addr_far, AL);
+ case MM_DIRECT:
+ case MM_PACKED:
+ addr_far = (void*)(x + y * (GET_BDA(video_cols) * 8));
+ SET_FARVAR(SEG_GRAPH, *addr_far, color);
break;
+ case MM_TEXT:
+ return;
}
}
-void
-biosfn_read_pixel(u8 BH, u16 CX, u16 DX, u16 *AX)
+u8
+vgafb_read_pixel(u16 x, u16 y)
{
// Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+ struct vgamode_s *vmode_g = get_current_mode();
if (!vmode_g)
- return;
- if (GET_GLOBAL(vmode_g->memmodel) & TEXT)
- return;
+ return 0;
u8 *addr_far, mask, attr=0, data, i;
switch (GET_GLOBAL(vmode_g->memmodel)) {
- case PLANAR4:
- case PLANAR1:
- addr_far = (void*)(CX / 8 + DX * GET_BDA(video_cols));
- mask = 0x80 >> (CX & 0x07);
+ case MM_PLANAR:
+ addr_far = (void*)(x / 8 + y * GET_BDA(video_cols));
+ mask = 0x80 >> (x & 0x07);
attr = 0x00;
for (i = 0; i < 4; i++) {
- outw((i << 8) | 0x04, VGAREG_GRDC_ADDRESS);
+ stdvga_planar4_plane(i);
data = GET_FARVAR(SEG_GRAPH, *addr_far) & mask;
if (data > 0)
attr |= (0x01 << i);
}
+ stdvga_planar4_plane(-1);
break;
- case CGA:
- addr_far = (void*)((CX >> 2) + (DX >> 1) * 80);
- if (DX & 1)
+ case MM_CGA:
+ addr_far = (void*)((x >> 2) + (y >> 1) * 80);
+ if (y & 1)
addr_far += 0x2000;
data = GET_FARVAR(SEG_CTEXT, *addr_far);
- if (GET_GLOBAL(vmode_g->pixbits) == 2)
- attr = (data >> ((3 - (CX & 0x03)) * 2)) & 0x03;
+ if (GET_GLOBAL(vmode_g->depth) == 2)
+ attr = (data >> ((3 - (x & 0x03)) * 2)) & 0x03;
else
- attr = (data >> (7 - (CX & 0x07))) & 0x01;
+ attr = (data >> (7 - (x & 0x07))) & 0x01;
break;
- case LINEAR8:
- addr_far = (void*)(CX + DX * (GET_BDA(video_cols) * 8));
+ case MM_DIRECT:
+ case MM_PACKED:
+ addr_far = (void*)(x + y * (GET_BDA(video_cols) * 8));
attr = GET_FARVAR(SEG_GRAPH, *addr_far);
break;
+ case MM_TEXT:
+ return 0;
}
- *AX = (*AX & 0xff00) | attr;
-}
-
-
-/****************************************************************
- * Font loading
- ****************************************************************/
-
-void
-vgafb_load_font(u16 seg, void *src_far, u16 count
- , u16 start, u8 destflags, u8 fontsize)
-{
- get_font_access();
- u16 blockaddr = ((destflags & 0x03) << 14) + ((destflags & 0x04) << 11);
- void *dest_far = (void*)(blockaddr + start*32);
- u16 i;
- for (i = 0; i < count; i++)
- memcpy_far(SEG_GRAPH, dest_far + i*32
- , seg, src_far + i*fontsize, fontsize);
- release_font_access();
+ return attr;
}
projects / seabios.git / blobdiff