#include "biosvar.h" // GET_BDA
#include "util.h" // memset_far
-#include "vgatables.h" // find_vga_entry
-
-// TODO
-// * extract hw code from framebuffer code
-// * normalize params (don't use AX/BX/CX/etc.)
+#include "vgabios.h" // find_vga_entry
+#include "stdvga.h" // stdvga_grdc_write
/****************************************************************
scroll_pl4(struct vgamode_s *vmode_g, int nblines, int attr
, struct cursorpos ul, struct cursorpos lr)
{
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- u8 cheight = GET_GLOBAL(vparam_g->cheight);
+ u8 cheight = GET_GLOBAL(vmode_g->cheight);
int stride = GET_BDA(video_cols);
void *src_far, *dest_far;
if (nblines >= 0) {
int cols = lr.x - ul.x + 1;
int rows = lr.y - ul.y + 1;
if (nblines < rows) {
- outw(0x0105, VGAREG_GRDC_ADDRESS);
+ stdvga_grdc_write(0x05, 0x01);
dest_far = memcpy_stride(SEG_GRAPH, dest_far, src_far, cols, stride
, (rows - nblines) * cheight);
}
if (attr < 0)
attr = 0;
- outw(0x0205, VGAREG_GRDC_ADDRESS);
+ stdvga_grdc_write(0x05, 0x02);
memset_stride(SEG_GRAPH, dest_far, attr, cols, stride, nblines * cheight);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
+ stdvga_grdc_write(0x05, 0x00);
}
static void
scroll_cga(struct vgamode_s *vmode_g, int nblines, int attr
, struct cursorpos ul, struct cursorpos lr)
{
- 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 bpp = GET_GLOBAL(vmode_g->pixbits);
int stride = GET_BDA(video_cols) * bpp;
void *src_far, *dest_far;
case CGA:
memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0000, 32*1024);
break;
- default: {
- outb(0x02, VGAREG_SEQU_ADDRESS);
- u8 mmask = inb(VGAREG_SEQU_DATA);
- outb(0x0f, VGAREG_SEQU_DATA); // all planes
+ default:
+ // XXX - old code gets/sets/restores sequ register 2 to 0xf -
+ // but it should always be 0xf anyway.
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);
+ stdvga_sequ_write(0x02, 0x0f);
+ stdvga_grdc_write(0x05, 0x02);
if (ca.attr & 0x80)
- outw(0x1803, VGAREG_GRDC_ADDRESS);
+ stdvga_grdc_write(0x03, 0x18);
else
- outw(0x0003, VGAREG_GRDC_ADDRESS);
+ stdvga_grdc_write(0x03, 0x00);
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);
+ stdvga_grdc_write(0x08, mask);
GET_FARVAR(SEG_GRAPH, *dest_far);
if (GET_GLOBAL(fdata_g[src + i]) & mask)
SET_FARVAR(SEG_GRAPH, *dest_far, ca.attr & 0x0f);
SET_FARVAR(SEG_GRAPH, *dest_far, 0x00);
}
}
- outw(0xff08, VGAREG_GRDC_ADDRESS);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
- outw(0x0003, VGAREG_GRDC_ADDRESS);
+ stdvga_grdc_write(0x08, 0xff);
+ stdvga_grdc_write(0x05, 0x00);
+ stdvga_grdc_write(0x03, 0x00);
}
static void
****************************************************************/
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));
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);
+ addr_far = (void*)(x / 8 + y * GET_BDA(video_cols));
+ mask = 0x80 >> (x & 0x07);
+ stdvga_grdc_write(0x08, mask);
+ stdvga_grdc_write(0x05, 0x02);
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);
+ if (color & 0x80)
+ stdvga_grdc_write(0x03, 0x18);
+ SET_FARVAR(SEG_GRAPH, *addr_far, color);
+ stdvga_grdc_write(0x08, 0xff);
+ stdvga_grdc_write(0x05, 0x00);
+ stdvga_grdc_write(0x03, 0x00);
break;
case CGA:
if (GET_GLOBAL(vmode_g->pixbits) == 2)
- addr_far = (void*)((CX >> 2) + (DX >> 1) * 80);
+ 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);
+ 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);
+ addr_far = (void*)(x + y * (GET_BDA(video_cols) * 8));
+ SET_FARVAR(SEG_GRAPH, *addr_far, color);
break;
}
}
-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));
if (!vmode_g)
- return;
+ return 0;
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);
+ 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_grdc_write(0x04, i);
data = GET_FARVAR(SEG_GRAPH, *addr_far) & mask;
if (data > 0)
attr |= (0x01 << i);
}
break;
case CGA:
- addr_far = (void*)((CX >> 2) + (DX >> 1) * 80);
- if (DX & 1)
+ 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;
+ 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));
+ addr_far = (void*)(x + y * (GET_BDA(video_cols) * 8));
attr = GET_FARVAR(SEG_GRAPH, *addr_far);
break;
}
- *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