// TODO:
-// * introduce "struct vregs", or add ebp to struct bregs.
-// * define structs for save/restore state
// * review correctness of converted asm by comparing with RBIL
-// * refactor redundant code into sub-functions
-// * See if there is a method to the in/out stuff that can be encapsulated.
-// * remove "biosfn" prefixes
-// * verify all funcs static
//
// * convert vbe/clext code
-//
-// * separate code into separate files
-// * extract hw code from bios interfaces
#include "bregs.h" // struct bregs
#include "biosvar.h" // GET_BDA
#include "util.h" // memset
-#include "vgatables.h" // vga_modes
-
-// XXX
-#define CONFIG_VBE 0
-#define CONFIG_CIRRUS 0
+#include "vgatables.h" // find_vga_entry
+#include "optionroms.h" // struct pci_data
+#include "config.h" // CONFIG_*
+#include "vbe.h" // vbe_*
+#include "geodelx.h" // geodelx_init
// XXX
#define DEBUG_VGA_POST 1
#define DEBUG_VGA_10 3
-#define SET_VGA(var, val) SET_FARVAR(get_global_seg(), (var), (val))
+/****************************************************************
+ * PCI Data
+ ****************************************************************/
+#if CONFIG_VGA_PCI == 1
+struct pci_data rom_pci_data VAR16VISIBLE = {
+ .signature = PCI_ROM_SIGNATURE,
+ .vendor = CONFIG_VGA_VID,
+ .device = CONFIG_VGA_DID,
+ .dlen = 0x18,
+ .class_hi = 0x300,
+ .irevision = 1,
+ .type = PCIROM_CODETYPE_X86,
+ .indicator = 0x80,
+};
+#endif
-// ===================================================================
-//
-// Video Utils
-//
-// ===================================================================
+/****************************************************************
+ * Helper functions
+ ****************************************************************/
-// -------------------------------------------------------------------
-inline void
+static inline void
call16_vgaint(u32 eax, u32 ebx)
{
asm volatile(
: "cc", "memory");
}
-// 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);
-}
-
-
-// ===================================================================
-//
-// BIOS functions
-//
-// ===================================================================
-
-// -------------------------------------------------------------------
static void
-biosfn_perform_gray_scale_summing(u16 start, u16 count)
+perform_gray_scale_summing(u16 start, u16 count)
{
- inb(VGAREG_ACTL_RESET);
- outb(0x00, VGAREG_ACTL_ADDRESS);
-
+ vgahw_screen_disable();
int i;
for (i = start; i < start+count; i++) {
- // set read address and switch to read mode
- outb(i, VGAREG_DAC_READ_ADDRESS);
- // get 6-bit wide RGB data values
- u8 r = inb(VGAREG_DAC_DATA);
- u8 g = inb(VGAREG_DAC_DATA);
- u8 b = inb(VGAREG_DAC_DATA);
+ u8 rgb[3];
+ vgahw_get_dac_regs(GET_SEG(SS), rgb, i, 1);
// intensity = ( 0.3 * Red ) + ( 0.59 * Green ) + ( 0.11 * Blue )
- u16 intensity = ((77 * r + 151 * g + 28 * b) + 0x80) >> 8;
-
+ u16 intensity = ((77 * rgb[0] + 151 * rgb[1] + 28 * rgb[2]) + 0x80) >> 8;
if (intensity > 0x3f)
intensity = 0x3f;
- // set write address and switch to write mode
- outb(i, VGAREG_DAC_WRITE_ADDRESS);
- // write new intensity value
- outb(intensity & 0xff, VGAREG_DAC_DATA);
- outb(intensity & 0xff, VGAREG_DAC_DATA);
- outb(intensity & 0xff, VGAREG_DAC_DATA);
+ vgahw_set_dac_regs(GET_SEG(SS), rgb, i, 1);
}
- inb(VGAREG_ACTL_RESET);
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ vgahw_screen_enable();
}
-// -------------------------------------------------------------------
static void
-biosfn_set_cursor_shape(u8 CH, u8 CL)
+set_cursor_shape(u8 start, u8 end)
{
- CH &= 0x3f;
- CL &= 0x1f;
+ start &= 0x3f;
+ end &= 0x1f;
- u16 curs = (CH << 8) + CL;
+ u16 curs = (start << 8) + end;
SET_BDA(cursor_type, curs);
u8 modeset_ctl = GET_BDA(modeset_ctl);
u16 cheight = GET_BDA(char_height);
- if ((modeset_ctl & 0x01) && (cheight > 8) && (CL < 8) && (CH < 0x20)) {
- if (CL != (CH + 1))
- CH = ((CH + 1) * cheight / 8) - 1;
+ if ((modeset_ctl & 0x01) && (cheight > 8) && (end < 8) && (start < 0x20)) {
+ if (end != (start + 1))
+ start = ((start + 1) * cheight / 8) - 1;
else
- CH = ((CL + 1) * cheight / 8) - 2;
- CL = ((CL + 1) * cheight / 8) - 1;
+ start = ((end + 1) * cheight / 8) - 2;
+ end = ((end + 1) * cheight / 8) - 1;
}
- // CTRC regs 0x0a and 0x0b
- u16 crtc_addr = GET_BDA(crtc_address);
- outb(0x0a, crtc_addr);
- outb(CH, crtc_addr + 1);
- outb(0x0b, crtc_addr);
- outb(CL, crtc_addr + 1);
+ vgahw_set_cursor_shape(start, end);
}
static u16
-biosfn_get_cursor_shape(u8 page)
+get_cursor_shape(u8 page)
{
if (page > 7)
return 0;
return GET_BDA(cursor_type);
}
-// -------------------------------------------------------------------
static void
-biosfn_set_cursor_pos(u8 page, u16 cursor)
+set_cursor_pos(struct cursorpos cp)
{
// Should not happen...
- if (page > 7)
+ if (cp.page > 7)
return;
// Bios cursor pos
- SET_BDA(cursor_pos[page], cursor);
+ SET_BDA(cursor_pos[cp.page], (cp.y << 8) | cp.x);
// Set the hardware cursor
u8 current = GET_BDA(video_page);
- if (page != current)
+ if (cp.page != current)
return;
// Get the dimensions
u16 nbcols = GET_BDA(video_cols);
u16 nbrows = GET_BDA(video_rows) + 1;
- u8 xcurs = cursor & 0x00ff;
- u8 ycurs = (cursor & 0xff00) >> 8;
-
// Calculate the address knowing nbcols nbrows and page num
- u16 address = SCREEN_IO_START(nbcols, nbrows, page) + xcurs + ycurs * nbcols;
+ u16 address = (SCREEN_IO_START(nbcols, nbrows, cp.page)
+ + cp.x + cp.y * nbcols);
- // CRTC regs 0x0e and 0x0f
- u16 crtc_addr = GET_BDA(crtc_address);
- outb(0x0e, crtc_addr);
- outb((address & 0xff00) >> 8, crtc_addr + 1);
- outb(0x0f, crtc_addr);
- outb(address & 0x00ff, crtc_addr + 1);
+ vgahw_set_cursor_pos(address);
}
-static u16
-biosfn_get_cursor_pos(u8 page)
+static struct cursorpos
+get_cursor_pos(u8 page)
{
- if (page > 7)
- return 0;
+ if (page == 0xff)
+ // special case - use current page
+ page = GET_BDA(video_page);
+ if (page > 7) {
+ struct cursorpos cp = { 0, 0, 0xfe };
+ return cp;
+ }
// FIXME should handle VGA 14/16 lines
- return GET_BDA(cursor_pos[page]);
+ u16 xy = GET_BDA(cursor_pos[page]);
+ struct cursorpos cp = {xy, xy>>8, page};
+ return cp;
}
-// -------------------------------------------------------------------
static void
-biosfn_set_active_page(u8 page)
+set_active_page(u8 page)
{
if (page > 7)
return;
return;
// Get pos curs pos for the right page
- u16 cursor = biosfn_get_cursor_pos(page);
+ struct cursorpos cp = get_cursor_pos(page);
u16 address;
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
+ if (GET_GLOBAL(vmode_g->memmodel) & TEXT) {
// Get the dimensions
u16 nbcols = GET_BDA(video_cols);
u16 nbrows = GET_BDA(video_rows) + 1;
// Start address
address = SCREEN_IO_START(nbcols, nbrows, page);
} else {
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- address = page * GET_GLOBAL(vparam_g->slength);
+ address = page * GET_GLOBAL(vmode_g->slength);
}
- // CRTC regs 0x0c and 0x0d
- u16 crtc_addr = GET_BDA(crtc_address);
- outb(0x0c, crtc_addr);
- outb((address & 0xff00) >> 8, crtc_addr + 1);
- outb(0x0d, crtc_addr);
- outb(address & 0x00ff, crtc_addr + 1);
+ vgahw_set_active_page(address);
// And change the BIOS page
SET_BDA(video_page, page);
dprintf(1, "Set active page %02x address %04x\n", page, address);
// Display the cursor, now the page is active
- biosfn_set_cursor_pos(page, cursor);
-}
-
-static void
-biosfn_set_video_mode(u8 mode)
-{ // mode: Bit 7 is 1 if no clear screen
- if (CONFIG_CIRRUS)
- cirrus_set_video_mode(mode);
-
-#ifdef VBE
- if (vbe_has_vbe_display())
- dispi_set_enable(VBE_DISPI_DISABLED);
-#endif
-
- // The real mode
- u8 noclearmem = mode & 0x80;
- mode = mode & 0x7f;
-
- // find the entry in the video modes
- struct vgamode_s *vmode_g = find_vga_entry(mode);
- dprintf(1, "mode search %02x found %p\n", mode, vmode_g);
- if (!vmode_g)
- return;
-
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- u16 twidth = GET_GLOBAL(vparam_g->twidth);
- u16 theightm1 = GET_GLOBAL(vparam_g->theightm1);
- u16 cheight = GET_GLOBAL(vparam_g->cheight);
-
- // Read the bios mode set control
- u8 modeset_ctl = GET_BDA(modeset_ctl);
-
- // Then we know the number of lines
-// FIXME
-
- // if palette loading (bit 3 of modeset ctl = 0)
- if ((modeset_ctl & 0x08) == 0) { // Set the PEL mask
- outb(GET_GLOBAL(vmode_g->pelmask), VGAREG_PEL_MASK);
-
- // Set the whole dac always, from 0
- outb(0x00, VGAREG_DAC_WRITE_ADDRESS);
-
- // From which palette
- u8 *palette_g = GET_GLOBAL(vmode_g->dac);
- u16 palsize = GET_GLOBAL(vmode_g->dacsize);
- // Always 256*3 values
- u16 i;
- for (i = 0; i < 0x0100; i++) {
- if (i <= palsize) {
- outb(GET_GLOBAL(palette_g[(i * 3) + 0]), VGAREG_DAC_DATA);
- outb(GET_GLOBAL(palette_g[(i * 3) + 1]), VGAREG_DAC_DATA);
- outb(GET_GLOBAL(palette_g[(i * 3) + 2]), VGAREG_DAC_DATA);
- } else {
- outb(0, VGAREG_DAC_DATA);
- outb(0, VGAREG_DAC_DATA);
- outb(0, VGAREG_DAC_DATA);
- }
- }
- if ((modeset_ctl & 0x02) == 0x02)
- biosfn_perform_gray_scale_summing(0x00, 0x100);
- }
- // Reset Attribute Ctl flip-flop
- inb(VGAREG_ACTL_RESET);
-
- // Set Attribute Ctl
- u16 i;
- for (i = 0; i <= 0x13; i++) {
- outb(i, VGAREG_ACTL_ADDRESS);
- outb(GET_GLOBAL(vparam_g->actl_regs[i]), VGAREG_ACTL_WRITE_DATA);
- }
- outb(0x14, VGAREG_ACTL_ADDRESS);
- outb(0x00, VGAREG_ACTL_WRITE_DATA);
-
- // Set Sequencer Ctl
- outb(0, VGAREG_SEQU_ADDRESS);
- outb(0x03, VGAREG_SEQU_DATA);
- for (i = 1; i <= 4; i++) {
- outb(i, VGAREG_SEQU_ADDRESS);
- outb(GET_GLOBAL(vparam_g->sequ_regs[i - 1]), VGAREG_SEQU_DATA);
- }
-
- // Set Grafx Ctl
- for (i = 0; i <= 8; i++) {
- outb(i, VGAREG_GRDC_ADDRESS);
- outb(GET_GLOBAL(vparam_g->grdc_regs[i]), VGAREG_GRDC_DATA);
- }
-
- // Set CRTC address VGA or MDA
- u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS;
- if (GET_GLOBAL(vmode_g->memmodel) == MTEXT)
- crtc_addr = VGAREG_MDA_CRTC_ADDRESS;
-
- // Disable CRTC write protection
- outw(0x0011, crtc_addr);
- // Set CRTC regs
- for (i = 0; i <= 0x18; i++) {
- outb(i, crtc_addr);
- outb(GET_GLOBAL(vparam_g->crtc_regs[i]), crtc_addr + 1);
- }
-
- // Set the misc register
- outb(GET_GLOBAL(vparam_g->miscreg), VGAREG_WRITE_MISC_OUTPUT);
-
- // Enable video
- outb(0x20, VGAREG_ACTL_ADDRESS);
- inb(VGAREG_ACTL_RESET);
-
- if (noclearmem == 0x00) {
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
- memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0720, 32*1024);
- } else {
- if (mode < 0x0d) {
- memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0000, 32*1024);
- } else {
- 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);
- }
- }
- }
- // Set the BIOS mem
- SET_BDA(video_mode, mode);
- SET_BDA(video_cols, twidth);
- SET_BDA(video_pagesize, GET_GLOBAL(vparam_g->slength));
- SET_BDA(crtc_address, crtc_addr);
- SET_BDA(video_rows, theightm1);
- SET_BDA(char_height, cheight);
- SET_BDA(video_ctl, (0x60 | noclearmem));
- SET_BDA(video_switches, 0xF9);
- SET_BDA(modeset_ctl, GET_BDA(modeset_ctl) & 0x7f);
-
- // FIXME We nearly have the good tables. to be reworked
- SET_BDA(dcc_index, 0x08); // 8 is VGA should be ok for now
- SET_BDA(video_savetable_ptr, (u32)video_save_pointer_table);
- SET_BDA(video_savetable_seg, get_global_seg());
-
- // FIXME
- SET_BDA(video_msr, 0x00); // Unavailable on vanilla vga, but...
- SET_BDA(video_pal, 0x00); // Unavailable on vanilla vga, but...
-
- // Set cursor shape
- if (GET_GLOBAL(vmode_g->class) == TEXT)
- biosfn_set_cursor_shape(0x06, 0x07);
- // Set cursor pos for page 0..7
- for (i = 0; i < 8; i++)
- biosfn_set_cursor_pos(i, 0x0000);
-
- // Set active page 0
- biosfn_set_active_page(0x00);
-
- // Write the fonts in memory
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
- call16_vgaint(0x1104, 0);
- call16_vgaint(0x1103, 0);
- }
- // Set the ints 0x1F and 0x43
- SET_IVT(0x1f, get_global_seg(), (u32)&vgafont8[128 * 8]);
-
- switch (cheight) {
- case 8:
- SET_IVT(0x43, get_global_seg(), (u32)vgafont8);
- break;
- case 14:
- SET_IVT(0x43, get_global_seg(), (u32)vgafont14);
- break;
- case 16:
- SET_IVT(0x43, get_global_seg(), (u32)vgafont16);
- break;
- }
+ set_cursor_pos(cp);
}
-// -------------------------------------------------------------------
static void
-vgamem_copy_pl4(u8 xstart, u8 ysrc, u8 ydest, u8 cols, u8 nbcols,
- u8 cheight)
+set_scan_lines(u8 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);
+ vgahw_set_scan_lines(lines);
+ if (lines == 8)
+ set_cursor_shape(0x06, 0x07);
+ else
+ set_cursor_shape(lines - 4, lines - 3);
+ SET_BDA(char_height, lines);
+ u16 vde = vgahw_get_vde();
+ u8 rows = vde / lines;
+ SET_BDA(video_rows, rows - 1);
+ u16 cols = GET_BDA(video_cols);
+ SET_BDA(video_pagesize, rows * cols * 2);
}
-// -------------------------------------------------------------------
-static void
-vgamem_fill_pl4(u8 xstart, u8 ystart, u8 cols, u8 nbcols, u8 cheight,
- u8 attr)
-{
- 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);
-}
-// -------------------------------------------------------------------
-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);
-}
+/****************************************************************
+ * Character writing
+ ****************************************************************/
-// -------------------------------------------------------------------
-static void
-vgamem_fill_cga(u8 xstart, u8 ystart, u8 cols, u8 nbcols, u8 cheight,
- u8 attr)
+// Scroll the screen one line. This function is designed to be called
+// tail-recursive to reduce stack usage.
+static void noinline
+scroll_one(u16 nbrows, u16 nbcols, u8 page)
{
- 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);
+ struct cursorpos ul = {0, 0, page};
+ struct cursorpos lr = {nbcols-1, nbrows-1, page};
+ vgafb_scroll(1, -1, ul, lr);
}
-// -------------------------------------------------------------------
+// Write a character to the screen at a given position. Implement
+// special characters and scroll the screen if necessary.
static void
-biosfn_scroll(u8 nblines, u8 attr, u8 rul, u8 cul, u8 rlr, u8 clr, u8 page,
- u8 dir)
+write_teletype(struct cursorpos *pcp, struct carattr ca)
{
- // page == 0xFF if current
- if (rul > rlr)
- return;
- if (cul > clr)
- return;
-
- // Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
- if (!vmode_g)
- return;
+ struct cursorpos cp = *pcp;
// Get the dimensions
u16 nbrows = GET_BDA(video_rows) + 1;
u16 nbcols = GET_BDA(video_cols);
- // Get the current page
- if (page == 0xFF)
- page = GET_BDA(video_page);
-
- if (rlr >= nbrows)
- rlr = nbrows - 1;
- if (clr >= nbcols)
- clr = nbcols - 1;
- if (nblines > nbrows)
- nblines = 0;
- u8 cols = clr - cul + 1;
-
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
- // Compute the address
- void *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, page));
- dprintf(3, "Scroll, address %p (%d %d %02x)\n"
- , address_far, nbrows, nbcols, page);
-
- if (nblines == 0 && rul == 0 && cul == 0 && rlr == nbrows - 1
- && clr == nbcols - 1) {
- memset16_far(GET_GLOBAL(vmode_g->sstart), address_far
- , (u16)attr * 0x100 + ' ', nbrows * nbcols * 2);
- } else { // if Scroll up
- if (dir == SCROLL_UP) {
- u16 i;
- for (i = rul; i <= rlr; i++)
- if ((i + nblines > rlr) || (nblines == 0))
- memset16_far(GET_GLOBAL(vmode_g->sstart)
- , address_far + (i * nbcols + cul) * 2
- , (u16)attr * 0x100 + ' ', cols * 2);
- else
- memcpy16_far(GET_GLOBAL(vmode_g->sstart)
- , address_far + (i * nbcols + cul) * 2
- , GET_GLOBAL(vmode_g->sstart)
- , (void*)(((i + nblines) * nbcols + cul) * 2)
- , cols * 2);
- } else {
- u16 i;
- for (i = rlr; i >= rul; i--) {
- if ((i < rul + nblines) || (nblines == 0))
- memset16_far(GET_GLOBAL(vmode_g->sstart)
- , address_far + (i * nbcols + cul) * 2
- , (u16)attr * 0x100 + ' ', cols * 2);
- else
- memcpy16_far(GET_GLOBAL(vmode_g->sstart)
- , address_far + (i * nbcols + cul) * 2
- , GET_GLOBAL(vmode_g->sstart)
- , (void*)(((i - nblines) * nbcols + cul) * 2)
- , cols * 2);
- if (i > rlr)
- break;
- }
- }
- }
- return;
- }
-
- // FIXME gfx mode not complete
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- u8 cheight = GET_GLOBAL(vparam_g->cheight);
- switch (GET_GLOBAL(vmode_g->memmodel)) {
- case PLANAR4:
- case PLANAR1:
- if (nblines == 0 && rul == 0 && cul == 0 && rlr == nbrows - 1
- && clr == nbcols - 1) {
- outw(0x0205, VGAREG_GRDC_ADDRESS);
- memset_far(GET_GLOBAL(vmode_g->sstart), 0, attr,
- nbrows * nbcols * cheight);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
- } else { // if Scroll up
- if (dir == SCROLL_UP) {
- u16 i;
- for (i = rul; i <= rlr; i++)
- if ((i + nblines > rlr) || (nblines == 0))
- vgamem_fill_pl4(cul, i, cols, nbcols, cheight,
- attr);
- else
- vgamem_copy_pl4(cul, i + nblines, i, cols,
- nbcols, cheight);
- } else {
- u16 i;
- for (i = rlr; i >= rul; i--) {
- if ((i < rul + nblines) || (nblines == 0))
- vgamem_fill_pl4(cul, i, cols, nbcols, cheight,
- attr);
- else
- vgamem_copy_pl4(cul, i, i - nblines, cols,
- nbcols, cheight);
- if (i > rlr)
- break;
- }
- }
- }
+ switch (ca.car) {
+ case 7:
+ //FIXME should beep
break;
- case CGA: {
- u8 bpp = GET_GLOBAL(vmode_g->pixbits);
- if (nblines == 0 && rul == 0 && cul == 0 && rlr == nbrows - 1
- && clr == nbcols - 1) {
- memset_far(GET_GLOBAL(vmode_g->sstart), 0, attr,
- nbrows * nbcols * cheight * bpp);
- } else {
- if (bpp == 2) {
- cul <<= 1;
- cols <<= 1;
- nbcols <<= 1;
- }
- // if Scroll up
- if (dir == SCROLL_UP) {
- u16 i;
- for (i = rul; i <= rlr; i++)
- if ((i + nblines > rlr) || (nblines == 0))
- vgamem_fill_cga(cul, i, cols, nbcols, cheight,
- attr);
- else
- vgamem_copy_cga(cul, i + nblines, i, cols,
- nbcols, cheight);
- } else {
- u16 i;
- for (i = rlr; i >= rul; i--) {
- if ((i < rul + nblines) || (nblines == 0))
- vgamem_fill_cga(cul, i, cols, nbcols, cheight,
- attr);
- else
- vgamem_copy_cga(cul, i, i - nblines, cols,
- nbcols, cheight);
- if (i > rlr)
- break;
- }
- }
- }
+ case 8:
+ if (cp.x > 0)
+ cp.x--;
break;
- }
- default:
- dprintf(1, "Scroll in graphics mode\n");
- }
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_read_char_attr(u8 page, u16 *car)
-{
- // Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
- if (!vmode_g)
- return;
-
- // Get the cursor pos for the page
- u16 cursor = biosfn_get_cursor_pos(page);
- u8 xcurs = cursor & 0x00ff;
- u8 ycurs = (cursor & 0xff00) >> 8;
-
- // Get the dimensions
- u16 nbrows = GET_BDA(video_rows) + 1;
- u16 nbcols = GET_BDA(video_cols);
-
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
- // Compute the address
- u16 *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, page)
- + (xcurs + ycurs * nbcols) * 2);
-
- *car = GET_FARVAR(GET_GLOBAL(vmode_g->sstart), *address_far);
- } else {
- // FIXME gfx mode
- dprintf(1, "Read char in graphics mode\n");
- }
-}
-
-// -------------------------------------------------------------------
-static void
-write_gfx_char_pl4(u8 car, u8 attr, u8 xcurs, u8 ycurs, u8 nbcols,
- u8 cheight)
-{
- u8 *fdata_g;
- switch (cheight) {
- case 14:
- fdata_g = vgafont14;
+ case '\r':
+ cp.x = 0;
break;
- case 16:
- fdata_g = vgafont16;
+ case '\n':
+ cp.y++;
+ break;
+ case '\t':
+ do {
+ struct carattr dummyca = {' ', ca.attr, ca.use_attr};
+ vgafb_write_char(cp, dummyca);
+ cp.x++;
+ } while (cp.x < nbcols && cp.x % 8);
break;
default:
- fdata_g = vgafont8;
- }
- u16 addr = xcurs + ycurs * cheight * nbcols;
- u16 src = car * cheight;
- outw(0x0f02, VGAREG_SEQU_ADDRESS);
- outw(0x0205, VGAREG_GRDC_ADDRESS);
- if (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, attr & 0x0f);
- else
- SET_FARVAR(SEG_GRAPH, *dest_far, 0x00);
- }
+ vgafb_write_char(cp, ca);
+ cp.x++;
}
- outw(0xff08, VGAREG_GRDC_ADDRESS);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
- outw(0x0003, VGAREG_GRDC_ADDRESS);
-}
-// -------------------------------------------------------------------
-static void
-write_gfx_char_cga(u8 car, u8 attr, u8 xcurs, u8 ycurs, u8 nbcols, u8 bpp)
-{
- u8 *fdata_g = vgafont8;
- u16 addr = (xcurs * bpp) + ycurs * 320;
- u16 src = car * 8;
- u8 i;
- for (i = 0; i < 8; i++) {
- u8 *dest_far = (void*)(addr + (i >> 1) * 80);
- if (i & 1)
- dest_far += 0x2000;
- u8 mask = 0x80;
- if (bpp == 1) {
- u8 data = 0;
- if (attr & 0x80)
- data = GET_FARVAR(SEG_CTEXT, *dest_far);
- u8 j;
- for (j = 0; j < 8; j++) {
- if (GET_GLOBAL(fdata_g[src + i]) & mask) {
- if (attr & 0x80)
- data ^= (attr & 0x01) << (7 - j);
- else
- data |= (attr & 0x01) << (7 - j);
- }
- mask >>= 1;
- }
- SET_FARVAR(SEG_CTEXT, *dest_far, data);
- } else {
- while (mask > 0) {
- u8 data = 0;
- if (attr & 0x80)
- data = GET_FARVAR(SEG_CTEXT, *dest_far);
- u8 j;
- for (j = 0; j < 4; j++) {
- if (GET_GLOBAL(fdata_g[src + i]) & mask) {
- if (attr & 0x80)
- data ^= (attr & 0x03) << ((3 - j) * 2);
- else
- data |= (attr & 0x03) << ((3 - j) * 2);
- }
- mask >>= 1;
- }
- SET_FARVAR(SEG_CTEXT, *dest_far, data);
- dest_far += 1;
- }
- }
+ // Do we need to wrap ?
+ if (cp.x == nbcols) {
+ cp.x = 0;
+ cp.y++;
}
-}
-
-// -------------------------------------------------------------------
-static void
-write_gfx_char_lin(u8 car, u8 attr, u8 xcurs, u8 ycurs, u8 nbcols)
-{
- u8 *fdata_g = vgafont8;
- u16 addr = xcurs * 8 + ycurs * nbcols * 64;
- u16 src = car * 8;
- u8 i;
- for (i = 0; i < 8; i++) {
- u8 *dest_far = (void*)(addr + i * nbcols * 8);
- u8 mask = 0x80;
- u8 j;
- for (j = 0; j < 8; j++) {
- u8 data = 0x00;
- if (GET_GLOBAL(fdata_g[src + i]) & mask)
- data = attr;
- SET_FARVAR(SEG_GRAPH, dest_far[j], data);
- mask >>= 1;
- }
+ // Do we need to scroll ?
+ if (cp.y < nbrows) {
+ *pcp = cp;
+ return;
}
+ // Scroll screen
+ cp.y--;
+ *pcp = cp;
+ scroll_one(nbrows, nbcols, cp.page);
}
-// -------------------------------------------------------------------
+// Write out a buffer of alternating characters and attributes.
static void
-biosfn_write_char_attr(u8 car, u8 page, u8 attr, u16 count)
+write_attr_string(struct cursorpos *pcp, u16 count, u16 seg, u8 *offset_far)
{
- // Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
- if (!vmode_g)
- return;
-
- // Get the cursor pos for the page
- u16 cursor = biosfn_get_cursor_pos(page);
- u8 xcurs = cursor & 0x00ff;
- u8 ycurs = (cursor & 0xff00) >> 8;
-
- // Get the dimensions
- u16 nbrows = GET_BDA(video_rows) + 1;
- u16 nbcols = GET_BDA(video_cols);
-
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
- // Compute the address
- void *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, page)
- + (xcurs + ycurs * nbcols) * 2);
-
- u16 dummy = ((u16)attr << 8) + car;
- memset16_far(GET_GLOBAL(vmode_g->sstart), address_far, dummy, count * 2);
- return;
- }
+ while (count--) {
+ u8 car = GET_FARVAR(seg, *offset_far);
+ offset_far++;
+ u8 attr = GET_FARVAR(seg, *offset_far);
+ offset_far++;
- // FIXME gfx mode not complete
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- u8 cheight = GET_GLOBAL(vparam_g->cheight);
- u8 bpp = GET_GLOBAL(vmode_g->pixbits);
- while ((count-- > 0) && (xcurs < nbcols)) {
- switch (GET_GLOBAL(vmode_g->memmodel)) {
- case PLANAR4:
- case PLANAR1:
- write_gfx_char_pl4(car, attr, xcurs, ycurs, nbcols,
- cheight);
- break;
- case CGA:
- write_gfx_char_cga(car, attr, xcurs, ycurs, nbcols, bpp);
- break;
- case LINEAR8:
- write_gfx_char_lin(car, attr, xcurs, ycurs, nbcols);
- break;
- }
- xcurs++;
+ struct carattr ca = {car, attr, 1};
+ write_teletype(pcp, ca);
}
}
-// -------------------------------------------------------------------
+// Write out a buffer of characters.
static void
-biosfn_write_char_only(u8 car, u8 page, u8 attr, u16 count)
+write_string(struct cursorpos *pcp, u8 attr, u16 count, u16 seg, u8 *offset_far)
{
- // Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
- if (!vmode_g)
- return;
-
- // Get the cursor pos for the page
- u16 cursor = biosfn_get_cursor_pos(page);
- u8 xcurs = cursor & 0x00ff;
- u8 ycurs = (cursor & 0xff00) >> 8;
-
- // Get the dimensions
- u16 nbrows = GET_BDA(video_rows) + 1;
- u16 nbcols = GET_BDA(video_cols);
-
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
- // Compute the address
- u8 *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, page)
- + (xcurs + ycurs * nbcols) * 2);
- while (count-- > 0) {
- SET_FARVAR(GET_GLOBAL(vmode_g->sstart), *address_far, car);
- address_far += 2;
- }
- return;
- }
+ while (count--) {
+ u8 car = GET_FARVAR(seg, *offset_far);
+ offset_far++;
- // FIXME gfx mode not complete
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- u8 cheight = GET_GLOBAL(vparam_g->cheight);
- u8 bpp = GET_GLOBAL(vmode_g->pixbits);
- while ((count-- > 0) && (xcurs < nbcols)) {
- switch (GET_GLOBAL(vmode_g->memmodel)) {
- case PLANAR4:
- case PLANAR1:
- write_gfx_char_pl4(car, attr, xcurs, ycurs, nbcols,
- cheight);
- break;
- case CGA:
- write_gfx_char_cga(car, attr, xcurs, ycurs, nbcols, bpp);
- break;
- case LINEAR8:
- write_gfx_char_lin(car, attr, xcurs, ycurs, nbcols);
- break;
- }
- xcurs++;
+ struct carattr ca = {car, attr, 1};
+ write_teletype(pcp, ca);
}
}
-// -------------------------------------------------------------------
-static void
-biosfn_set_border_color(struct bregs *regs)
-{
- inb(VGAREG_ACTL_RESET);
- outb(0x00, VGAREG_ACTL_ADDRESS);
- u8 al = regs->bl & 0x0f;
- if (al & 0x08)
- al += 0x08;
- outb(al, VGAREG_ACTL_WRITE_DATA);
- u8 bl = regs->bl & 0x10;
-
- int i;
- for (i = 1; i < 4; i++) {
- outb(i, VGAREG_ACTL_ADDRESS);
- al = inb(VGAREG_ACTL_READ_DATA);
- al &= 0xef;
- al |= bl;
- outb(al, VGAREG_ACTL_WRITE_DATA);
- }
- outb(0x20, VGAREG_ACTL_ADDRESS);
-}
+/****************************************************************
+ * Save and restore bda state
+ ****************************************************************/
static void
-biosfn_set_palette(struct bregs *regs)
+save_bda_state(u16 seg, struct saveBDAstate *info)
{
- inb(VGAREG_ACTL_RESET);
- u8 bl = regs->bl & 0x01;
- int i;
- for (i = 1; i < 4; i++) {
- outb(i, VGAREG_ACTL_ADDRESS);
-
- u8 al = inb(VGAREG_ACTL_READ_DATA);
- al &= 0xfe;
- al |= bl;
- outb(al, VGAREG_ACTL_WRITE_DATA);
- }
- outb(0x20, VGAREG_ACTL_ADDRESS);
+ SET_FARVAR(seg, info->video_mode, GET_BDA(video_mode));
+ SET_FARVAR(seg, info->video_cols, GET_BDA(video_cols));
+ SET_FARVAR(seg, info->video_pagesize, GET_BDA(video_pagesize));
+ SET_FARVAR(seg, info->crtc_address, GET_BDA(crtc_address));
+ SET_FARVAR(seg, info->video_rows, GET_BDA(video_rows));
+ SET_FARVAR(seg, info->char_height, GET_BDA(char_height));
+ SET_FARVAR(seg, info->video_ctl, GET_BDA(video_ctl));
+ SET_FARVAR(seg, info->video_switches, GET_BDA(video_switches));
+ SET_FARVAR(seg, info->modeset_ctl, GET_BDA(modeset_ctl));
+ SET_FARVAR(seg, info->cursor_type, GET_BDA(cursor_type));
+ u16 i;
+ for (i=0; i<8; i++)
+ SET_FARVAR(seg, info->cursor_pos[i], GET_BDA(cursor_pos[i]));
+ SET_FARVAR(seg, info->video_pagestart, GET_BDA(video_pagestart));
+ SET_FARVAR(seg, info->video_page, GET_BDA(video_page));
+ /* current font */
+ SET_FARVAR(seg, info->font0, GET_IVT(0x1f));
+ SET_FARVAR(seg, info->font1, GET_IVT(0x43));
+}
+
+static void
+restore_bda_state(u16 seg, struct saveBDAstate *info)
+{
+ SET_BDA(video_mode, GET_FARVAR(seg, info->video_mode));
+ SET_BDA(video_cols, GET_FARVAR(seg, info->video_cols));
+ SET_BDA(video_pagesize, GET_FARVAR(seg, info->video_pagesize));
+ SET_BDA(crtc_address, GET_FARVAR(seg, info->crtc_address));
+ SET_BDA(video_rows, GET_FARVAR(seg, info->video_rows));
+ SET_BDA(char_height, GET_FARVAR(seg, info->char_height));
+ SET_BDA(video_ctl, GET_FARVAR(seg, info->video_ctl));
+ SET_BDA(video_switches, GET_FARVAR(seg, info->video_switches));
+ SET_BDA(modeset_ctl, GET_FARVAR(seg, info->modeset_ctl));
+ SET_BDA(cursor_type, GET_FARVAR(seg, info->cursor_type));
+ u16 i;
+ for (i = 0; i < 8; i++)
+ SET_BDA(cursor_pos[i], GET_FARVAR(seg, info->cursor_pos[i]));
+ SET_BDA(video_pagestart, GET_FARVAR(seg, info->video_pagestart));
+ SET_BDA(video_page, GET_FARVAR(seg, info->video_page));
+ /* current font */
+ SET_IVT(0x1f, GET_FARVAR(seg, info->font0));
+ SET_IVT(0x43, GET_FARVAR(seg, info->font1));
}
-// -------------------------------------------------------------------
-static void
-biosfn_write_pixel(u8 BH, u8 AL, u16 CX, u16 DX)
-{
- // Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
- if (!vmode_g)
- return;
- if (GET_GLOBAL(vmode_g->class) == TEXT)
- return;
- u8 *addr_far, mask, attr, data;
- 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);
- break;
- case CGA:
- if (GET_GLOBAL(vmode_g->pixbits) == 2)
- addr_far = (void*)((CX >> 2) + (DX >> 1) * 80);
- else
- addr_far = (void*)((CX >> 3) + (DX >> 1) * 80);
- if (DX & 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);
- } else {
- attr = (AL & 0x01) << (7 - (CX & 0x07));
- mask = 0x01 << (7 - (CX & 0x07));
- }
- if (AL & 0x80) {
- data ^= attr;
- } else {
- data &= ~mask;
- data |= attr;
- }
- 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);
- break;
- }
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_read_pixel(u8 BH, u16 CX, u16 DX, u16 *AX)
-{
- // Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
- if (!vmode_g)
- return;
- if (GET_GLOBAL(vmode_g->class) == TEXT)
- return;
-
- 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);
- attr = 0x00;
- for (i = 0; i < 4; i++) {
- outw((i << 8) | 0x04, VGAREG_GRDC_ADDRESS);
- 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 += 0x2000;
- data = GET_FARVAR(SEG_CTEXT, *addr_far);
- if (GET_GLOBAL(vmode_g->pixbits) == 2)
- attr = (data >> ((3 - (CX & 0x03)) * 2)) & 0x03;
- else
- attr = (data >> (7 - (CX & 0x07))) & 0x01;
- break;
- case LINEAR8:
- addr_far = (void*)(CX + DX * (GET_BDA(video_cols) * 8));
- attr = GET_FARVAR(SEG_GRAPH, *addr_far);
- break;
- }
- *AX = (*AX & 0xff00) | attr;
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_write_teletype(u8 car, u8 page, u8 attr, u8 flag)
-{ // flag = WITH_ATTR / NO_ATTR
- // special case if page is 0xff, use current page
- if (page == 0xff)
- page = GET_BDA(video_page);
-
- // Get the mode
- struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
- if (!vmode_g)
- return;
-
- // Get the cursor pos for the page
- u16 cursor = biosfn_get_cursor_pos(page);
- u8 xcurs = cursor & 0x00ff;
- u8 ycurs = (cursor & 0xff00) >> 8;
-
- // Get the dimensions
- u16 nbrows = GET_BDA(video_rows) + 1;
- u16 nbcols = GET_BDA(video_cols);
-
- switch (car) {
- case 7:
- //FIXME should beep
- break;
-
- case 8:
- if (xcurs > 0)
- xcurs--;
- break;
-
- case '\r':
- xcurs = 0;
- break;
-
- case '\n':
- ycurs++;
- break;
-
- case '\t':
- do {
- biosfn_write_teletype(' ', page, attr, flag);
- cursor = biosfn_get_cursor_pos(page);
- xcurs = cursor & 0x00ff;
- ycurs = (cursor & 0xff00) >> 8;
- } while (xcurs % 8 == 0);
- break;
-
- default:
-
- if (GET_GLOBAL(vmode_g->class) == TEXT) {
- // Compute the address
- u8 *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, page)
- + (xcurs + ycurs * nbcols) * 2);
- // Write the char
- SET_FARVAR(GET_GLOBAL(vmode_g->sstart), address_far[0], car);
- if (flag == WITH_ATTR)
- SET_FARVAR(GET_GLOBAL(vmode_g->sstart), address_far[1], attr);
- } else {
- // FIXME gfx mode not complete
- struct VideoParam_s *vparam_g = GET_GLOBAL(vmode_g->vparam);
- u8 cheight = GET_GLOBAL(vparam_g->cheight);
- u8 bpp = GET_GLOBAL(vmode_g->pixbits);
- switch (GET_GLOBAL(vmode_g->memmodel)) {
- case PLANAR4:
- case PLANAR1:
- write_gfx_char_pl4(car, attr, xcurs, ycurs, nbcols, cheight);
- break;
- case CGA:
- write_gfx_char_cga(car, attr, xcurs, ycurs, nbcols, bpp);
- break;
- case LINEAR8:
- write_gfx_char_lin(car, attr, xcurs, ycurs, nbcols);
- break;
- }
- }
- xcurs++;
- }
-
- // Do we need to wrap ?
- if (xcurs == nbcols) {
- xcurs = 0;
- ycurs++;
- }
- // Do we need to scroll ?
- if (ycurs == nbrows) {
- if (GET_GLOBAL(vmode_g->class) == TEXT)
- biosfn_scroll(0x01, 0x07, 0, 0, nbrows - 1, nbcols - 1, page,
- SCROLL_UP);
- else
- biosfn_scroll(0x01, 0x00, 0, 0, nbrows - 1, nbcols - 1, page,
- SCROLL_UP);
- ycurs -= 1;
- }
- // Set the cursor for the page
- cursor = ycurs;
- cursor <<= 8;
- cursor += xcurs;
- biosfn_set_cursor_pos(page, cursor);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_get_video_mode(struct bregs *regs)
-{
- regs->bh = GET_BDA(video_page);
- regs->al = GET_BDA(video_mode) | (GET_BDA(video_ctl) & 0x80);
- regs->ah = GET_BDA(video_cols);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_set_overscan_border_color(struct bregs *regs)
-{
- inb(VGAREG_ACTL_RESET);
- outb(0x11, VGAREG_ACTL_ADDRESS);
- outb(regs->bh, VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_set_all_palette_reg(struct bregs *regs)
-{
- inb(VGAREG_ACTL_RESET);
-
- u8 *data_far = (u8*)(regs->dx + 0);
- int i;
- for (i = 0; i < 0x10; i++) {
- outb(i, VGAREG_ACTL_ADDRESS);
- u8 val = GET_FARVAR(regs->es, *data_far);
- outb(val, VGAREG_ACTL_WRITE_DATA);
- data_far++;
- }
- outb(0x11, VGAREG_ACTL_ADDRESS);
- outb(GET_FARVAR(regs->es, *data_far), VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_toggle_intensity(struct bregs *regs)
-{
- inb(VGAREG_ACTL_RESET);
- outb(0x10, VGAREG_ACTL_ADDRESS);
- u8 val = (inb(VGAREG_ACTL_READ_DATA) & 0x7f) | ((regs->bl & 0x01) << 3);
- outb(val, VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-}
+/****************************************************************
+ * VGA int 10 handler
+ ****************************************************************/
-// -------------------------------------------------------------------
+// set video mode
void
-biosfn_set_single_palette_reg(u8 reg, u8 val)
-{
- inb(VGAREG_ACTL_RESET);
- outb(reg, VGAREG_ACTL_ADDRESS);
- outb(val, VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-}
-
-// -------------------------------------------------------------------
-u8
-biosfn_get_single_palette_reg(u8 reg)
-{
- inb(VGAREG_ACTL_RESET);
- outb(reg, VGAREG_ACTL_ADDRESS);
- u8 v = inb(VGAREG_ACTL_READ_DATA);
- inb(VGAREG_ACTL_RESET);
- outb(0x20, VGAREG_ACTL_ADDRESS);
- return v;
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_read_overscan_border_color(struct bregs *regs)
-{
- inb(VGAREG_ACTL_RESET);
- outb(0x11, VGAREG_ACTL_ADDRESS);
- regs->bh = inb(VGAREG_ACTL_READ_DATA);
- inb(VGAREG_ACTL_RESET);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_get_all_palette_reg(struct bregs *regs)
-{
- u8 *data_far = (u8*)(regs->dx + 0);
- int i;
- for (i = 0; i < 0x10; i++) {
- inb(VGAREG_ACTL_RESET);
- outb(i, VGAREG_ACTL_ADDRESS);
- SET_FARVAR(regs->es, *data_far, inb(VGAREG_ACTL_READ_DATA));
- data_far++;
- }
- inb(VGAREG_ACTL_RESET);
- outb(0x11, VGAREG_ACTL_ADDRESS);
- SET_FARVAR(regs->es, *data_far, inb(VGAREG_ACTL_READ_DATA));
- inb(VGAREG_ACTL_RESET);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_set_single_dac_reg(struct bregs *regs)
-{
- outb(regs->bl, VGAREG_DAC_WRITE_ADDRESS);
- outb(regs->dh, VGAREG_DAC_DATA);
- outb(regs->ch, VGAREG_DAC_DATA);
- outb(regs->cl, VGAREG_DAC_DATA);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_set_all_dac_reg(struct bregs *regs)
-{
- outb(regs->bl, VGAREG_DAC_WRITE_ADDRESS);
- u8 *data_far = (u8*)(regs->dx + 0);
- int count = regs->cx;
- while (count) {
- outb(GET_FARVAR(regs->es, *data_far), VGAREG_DAC_DATA);
- data_far++;
- outb(GET_FARVAR(regs->es, *data_far), VGAREG_DAC_DATA);
- data_far++;
- outb(GET_FARVAR(regs->es, *data_far), VGAREG_DAC_DATA);
- data_far++;
- count--;
- }
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_select_video_dac_color_page(struct bregs *regs)
-{
- inb(VGAREG_ACTL_RESET);
- outb(0x10, VGAREG_ACTL_ADDRESS);
- u8 val = inb(VGAREG_ACTL_READ_DATA);
- if (!(regs->bl & 0x01)) {
- val = (val & 0x7f) | (regs->bh << 7);
- outb(val, VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
- return;
- }
- inb(VGAREG_ACTL_RESET);
- outb(0x14, VGAREG_ACTL_ADDRESS);
- u8 bh = regs->bh;
- if (!(val & 0x80))
- bh <<= 2;
- bh &= 0x0f;
- outb(bh, VGAREG_ACTL_WRITE_DATA);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_read_single_dac_reg(struct bregs *regs)
+vga_set_mode(u8 mode, u8 noclearmem)
{
- outb(regs->bl, VGAREG_DAC_READ_ADDRESS);
- regs->dh = inb(VGAREG_DAC_DATA);
- regs->ch = inb(VGAREG_DAC_DATA);
- regs->cl = inb(VGAREG_DAC_DATA);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_read_all_dac_reg(struct bregs *regs)
-{
- outb(regs->bl, VGAREG_DAC_READ_ADDRESS);
- u8 *data_far = (u8*)(regs->dx + 0);
- int count = regs->cx;
- while (count) {
- SET_FARVAR(regs->es, *data_far, inb(VGAREG_DAC_DATA));
- data_far++;
- SET_FARVAR(regs->es, *data_far, inb(VGAREG_DAC_DATA));
- data_far++;
- SET_FARVAR(regs->es, *data_far, inb(VGAREG_DAC_DATA));
- data_far++;
- count--;
- }
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_set_pel_mask(struct bregs *regs)
-{
- outb(regs->bl, VGAREG_PEL_MASK);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_read_pel_mask(struct bregs *regs)
-{
- regs->bl = inb(VGAREG_PEL_MASK);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_read_video_dac_state(struct bregs *regs)
-{
- inb(VGAREG_ACTL_RESET);
- outb(0x10, VGAREG_ACTL_ADDRESS);
- u8 val1 = inb(VGAREG_ACTL_READ_DATA) >> 7;
-
- inb(VGAREG_ACTL_RESET);
- outb(0x14, VGAREG_ACTL_ADDRESS);
- u8 val2 = inb(VGAREG_ACTL_READ_DATA) & 0x0f;
- if (!(val1 & 0x01))
- val2 >>= 2;
-
- inb(VGAREG_ACTL_RESET);
- outb(0x20, VGAREG_ACTL_ADDRESS);
-
- regs->bl = val1;
- regs->bh = val2;
-}
-
-// -------------------------------------------------------------------
-static void
-get_font_access()
-{
- outw(0x0100, VGAREG_SEQU_ADDRESS);
- outw(0x0402, VGAREG_SEQU_ADDRESS);
- outw(0x0704, VGAREG_SEQU_ADDRESS);
- outw(0x0300, VGAREG_SEQU_ADDRESS);
- outw(0x0204, VGAREG_GRDC_ADDRESS);
- outw(0x0005, VGAREG_GRDC_ADDRESS);
- outw(0x0406, VGAREG_GRDC_ADDRESS);
-}
-
-static void
-release_font_access()
-{
- outw(0x0100, VGAREG_SEQU_ADDRESS);
- outw(0x0302, VGAREG_SEQU_ADDRESS);
- outw(0x0304, VGAREG_SEQU_ADDRESS);
- outw(0x0300, VGAREG_SEQU_ADDRESS);
- u16 v = inw(VGAREG_READ_MISC_OUTPUT);
- v = ((v & 0x01) << 10) | 0x0a06;
- outw(v, VGAREG_GRDC_ADDRESS);
- outw(0x0004, VGAREG_GRDC_ADDRESS);
- outw(0x1005, VGAREG_GRDC_ADDRESS);
-}
-
-static void
-set_scan_lines(u8 lines)
-{
- u16 crtc_addr = GET_BDA(crtc_address);
- outb(0x09, crtc_addr);
- u8 crtc_r9 = inb(crtc_addr + 1);
- crtc_r9 = (crtc_r9 & 0xe0) | (lines - 1);
- outb(crtc_r9, crtc_addr + 1);
- if (lines == 8)
- biosfn_set_cursor_shape(0x06, 0x07);
- else
- biosfn_set_cursor_shape(lines - 4, lines - 3);
- SET_BDA(char_height, lines);
- outb(0x12, crtc_addr);
- u16 vde = inb(crtc_addr + 1);
- outb(0x07, crtc_addr);
- u8 ovl = inb(crtc_addr + 1);
- vde += (((ovl & 0x02) << 7) + ((ovl & 0x40) << 3) + 1);
- u8 rows = vde / lines;
- SET_BDA(video_rows, rows - 1);
- u16 cols = GET_BDA(video_cols);
- SET_BDA(video_pagesize, rows * cols * 2);
-}
-
-static void
-biosfn_load_text_user_pat(u8 AL, u16 ES, u16 BP, u16 CX, u16 DX, u8 BL,
- u8 BH)
-{
- get_font_access();
- u16 blockaddr = ((BL & 0x03) << 14) + ((BL & 0x04) << 11);
- u16 i;
- for (i = 0; i < CX; i++) {
- void *src_far = (void*)(BP + i * BH);
- void *dest_far = (void*)(blockaddr + (DX + i) * 32);
- memcpy_far(SEG_GRAPH, dest_far, ES, src_far, BH);
- }
- release_font_access();
- if (AL >= 0x10)
- set_scan_lines(BH);
-}
-
-static void
-biosfn_load_text_8_14_pat(u8 AL, u8 BL)
-{
- get_font_access();
- u16 blockaddr = ((BL & 0x03) << 14) + ((BL & 0x04) << 11);
- u16 i;
- for (i = 0; i < 0x100; i++) {
- u16 src = i * 14;
- void *dest_far = (void*)(blockaddr + i * 32);
- memcpy_far(SEG_GRAPH, dest_far, get_global_seg(), &vgafont14[src], 14);
- }
- release_font_access();
- if (AL >= 0x10)
- set_scan_lines(14);
-}
-
-static void
-biosfn_load_text_8_8_pat(u8 AL, u8 BL)
-{
- get_font_access();
- u16 blockaddr = ((BL & 0x03) << 14) + ((BL & 0x04) << 11);
- u16 i;
- for (i = 0; i < 0x100; i++) {
- u16 src = i * 8;
- void *dest_far = (void*)(blockaddr + i * 32);
- memcpy_far(SEG_GRAPH, dest_far, get_global_seg(), &vgafont8[src], 8);
- }
- release_font_access();
- if (AL >= 0x10)
- set_scan_lines(8);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_set_text_block_specifier(struct bregs *regs)
-{
- outw((regs->bl << 8) | 0x03, VGAREG_SEQU_ADDRESS);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_load_text_8_16_pat(u8 AL, u8 BL)
-{
- get_font_access();
- u16 blockaddr = ((BL & 0x03) << 14) + ((BL & 0x04) << 11);
- u16 i;
- for (i = 0; i < 0x100; i++) {
- u16 src = i * 16;
- void *dest_far = (void*)(blockaddr + i * 32);
- memcpy_far(SEG_GRAPH, dest_far, get_global_seg(), &vgafont16[src], 16);
- }
- release_font_access();
- if (AL >= 0x10)
- set_scan_lines(16);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_get_font_info(u8 BH, u16 *ES, u16 *BP, u16 *CX, u16 *DX)
-{
- switch (BH) {
- case 0x00: {
- u32 segoff = GET_IVT(0x1f).segoff;
- *ES = segoff >> 16;
- *BP = segoff;
- break;
- }
- case 0x01: {
- u32 segoff = GET_IVT(0x43).segoff;
- *ES = segoff >> 16;
- *BP = segoff;
- break;
- }
- case 0x02:
- *ES = get_global_seg();
- *BP = (u32)vgafont14;
- break;
- case 0x03:
- *ES = get_global_seg();
- *BP = (u32)vgafont8;
- break;
- case 0x04:
- *ES = get_global_seg();
- *BP = (u32)vgafont8 + 128 * 8;
- break;
- case 0x05:
- *ES = get_global_seg();
- *BP = (u32)vgafont14alt;
- break;
- case 0x06:
- *ES = get_global_seg();
- *BP = (u32)vgafont16;
- break;
- case 0x07:
- *ES = get_global_seg();
- *BP = (u32)vgafont16alt;
- break;
- default:
- dprintf(1, "Get font info BH(%02x) was discarded\n", BH);
+ // find the entry in the video modes
+ struct vgamode_s *vmode_g = find_vga_entry(mode);
+ dprintf(1, "mode search %02x found %p\n", mode, vmode_g);
+ if (!vmode_g)
return;
- }
- // Set byte/char of on screen font
- *CX = GET_BDA(char_height) & 0xff;
-
- // Set Highest char row
- *DX = GET_BDA(video_rows);
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_get_ega_info(struct bregs *regs)
-{
- regs->cx = GET_BDA(video_switches) & 0x0f;
- regs->ax = GET_BDA(crtc_address);
- if (regs->ax == VGAREG_MDA_CRTC_ADDRESS)
- regs->bx = 0x0103;
- else
- regs->bx = 0x0003;
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_select_vert_res(struct bregs *regs)
-{
- u8 mctl = GET_BDA(modeset_ctl);
- u8 vswt = GET_BDA(video_switches);
-
- switch (regs->al) {
- case 0x00:
- // 200 lines
- mctl = (mctl & ~0x10) | 0x80;
- vswt = (vswt & ~0x0f) | 0x08;
- break;
- case 0x01:
- // 350 lines
- mctl &= ~0x90;
- vswt = (vswt & ~0x0f) | 0x09;
- break;
- case 0x02:
- // 400 lines
- mctl = (mctl & ~0x80) | 0x10;
- vswt = (vswt & ~0x0f) | 0x09;
- break;
- default:
- dprintf(1, "Select vert res (%02x) was discarded\n", regs->al);
- break;
- }
- SET_BDA(modeset_ctl, mctl);
- SET_BDA(video_switches, vswt);
- regs->ax = 0x1212;
-}
-
-static void
-biosfn_enable_default_palette_loading(struct bregs *regs)
-{
- u8 v = (regs->al & 0x01) << 3;
- u8 mctl = GET_BDA(video_ctl) & ~0x08;
- SET_BDA(video_ctl, mctl | v);
- regs->ax = 0x1212;
-}
-
-static void
-biosfn_enable_video_addressing(struct bregs *regs)
-{
- u8 v = ((regs->al << 1) & 0x02) ^ 0x02;
- u8 v2 = inb(VGAREG_READ_MISC_OUTPUT) & ~0x02;
- outb(v | v2, VGAREG_WRITE_MISC_OUTPUT);
- regs->ax = 0x1212;
-}
-
-
-static void
-biosfn_enable_grayscale_summing(struct bregs *regs)
-{
- u8 v = ((regs->al << 1) & 0x02) ^ 0x02;
- u8 v2 = GET_BDA(modeset_ctl) & ~0x02;
- SET_BDA(modeset_ctl, v | v2);
- regs->ax = 0x1212;
-}
-
-static void
-biosfn_enable_cursor_emulation(struct bregs *regs)
-{
- u8 v = (regs->al & 0x01) ^ 0x01;
- u8 v2 = GET_BDA(modeset_ctl) & ~0x01;
- SET_BDA(modeset_ctl, v | v2);
- regs->ax = 0x1212;
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_write_string(u8 flag, u8 page, u8 attr, u16 count, u8 row, u8 col,
- u16 seg, u8 *offset_far)
-{
- // Read curs info for the page
- u16 oldcurs = biosfn_get_cursor_pos(page);
-
- // if row=0xff special case : use current cursor position
- if (row == 0xff) {
- col = oldcurs & 0x00ff;
- row = (oldcurs & 0xff00) >> 8;
- }
-
- u16 newcurs = row;
- newcurs <<= 8;
- newcurs += col;
- biosfn_set_cursor_pos(page, newcurs);
-
- while (count-- != 0) {
- u8 car = GET_FARVAR(seg, *offset_far);
- offset_far++;
- if ((flag & 0x02) != 0) {
- attr = GET_FARVAR(seg, *offset_far);
- offset_far++;
- }
-
- biosfn_write_teletype(car, page, attr, WITH_ATTR);
- }
-
- // Set back curs pos
- if ((flag & 0x01) == 0)
- biosfn_set_cursor_pos(page, oldcurs);
-}
-// -------------------------------------------------------------------
-static void
-biosfn_read_display_code(struct bregs *regs)
-{
- regs->bx = GET_BDA(dcc_index);
- regs->al = 0x1a;
-}
-
-static void
-biosfn_set_display_code(struct bregs *regs)
-{
- SET_BDA(dcc_index, regs->bl);
- dprintf(1, "Alternate Display code (%02x) was discarded\n", regs->bh);
- regs->al = 0x1a;
-}
-
-// -------------------------------------------------------------------
-static void
-biosfn_read_state_info(u16 BX, u16 ES, u16 DI)
-{
- // Address of static functionality table
- SET_FARVAR(ES, *(u16*)(DI + 0x00), (u32)static_functionality);
- SET_FARVAR(ES, *(u16*)(DI + 0x02), get_global_seg());
-
- // Hard coded copy from BIOS area. Should it be cleaner ?
- memcpy_far(ES, (void*)(DI + 0x04), SEG_BDA, (void*)0x49, 30);
- memcpy_far(ES, (void*)(DI + 0x22), SEG_BDA, (void*)0x84, 3);
-
- SET_FARVAR(ES, *(u8*)(DI + 0x25), GET_BDA(dcc_index));
- SET_FARVAR(ES, *(u8*)(DI + 0x26), 0);
- SET_FARVAR(ES, *(u8*)(DI + 0x27), 16);
- SET_FARVAR(ES, *(u8*)(DI + 0x28), 0);
- SET_FARVAR(ES, *(u8*)(DI + 0x29), 8);
- SET_FARVAR(ES, *(u8*)(DI + 0x2a), 2);
- SET_FARVAR(ES, *(u8*)(DI + 0x2b), 0);
- SET_FARVAR(ES, *(u8*)(DI + 0x2c), 0);
- SET_FARVAR(ES, *(u8*)(DI + 0x31), 3);
- SET_FARVAR(ES, *(u8*)(DI + 0x32), 0);
+ // Read the bios mode set control
+ u8 modeset_ctl = GET_BDA(modeset_ctl);
- memset_far(ES, (void*)(DI + 0x33), 0, 13);
-}
+ // Then we know the number of lines
+// FIXME
-// -------------------------------------------------------------------
-// -------------------------------------------------------------------
-static u16
-biosfn_read_video_state_size(u16 CX)
-{
- u16 size = 0;
- if (CX & 1)
- size += 0x46;
- if (CX & 2)
- size += (5 + 8 + 5) * 2 + 6;
- if (CX & 4)
- size += 3 + 256 * 3 + 1;
- return size;
-}
+ // if palette loading (bit 3 of modeset ctl = 0)
+ if ((modeset_ctl & 0x08) == 0) { // Set the PEL mask
+ vgahw_set_pel_mask(GET_GLOBAL(vmode_g->pelmask));
-static u16
-biosfn_save_video_state(u16 CX, u16 ES, u16 BX)
-{
- u16 crtc_addr = GET_BDA(crtc_address);
- if (CX & 1) {
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_SEQU_ADDRESS));
- BX++;
- SET_FARVAR(ES, *(u8*)(BX+0), inb(crtc_addr));
- BX++;
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_GRDC_ADDRESS));
- BX++;
- inb(VGAREG_ACTL_RESET);
- u16 ar_index = inb(VGAREG_ACTL_ADDRESS);
- SET_FARVAR(ES, *(u8*)(BX+0), ar_index);
- BX++;
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_READ_FEATURE_CTL));
- BX++;
+ // From which palette
+ u8 *palette_g = GET_GLOBAL(vmode_g->dac);
+ u16 palsize = GET_GLOBAL(vmode_g->dacsize) / 3;
+ // Always 256*3 values
+ vgahw_set_dac_regs(get_global_seg(), palette_g, 0, palsize);
u16 i;
- for (i = 1; i <= 4; i++) {
- outb(i, VGAREG_SEQU_ADDRESS);
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_SEQU_DATA));
- BX++;
- }
- outb(0, VGAREG_SEQU_ADDRESS);
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_SEQU_DATA));
- BX++;
-
- for (i = 0; i <= 0x18; i++) {
- outb(i, crtc_addr);
- SET_FARVAR(ES, *(u8*)(BX+0), inb(crtc_addr + 1));
- BX++;
+ for (i = palsize; i < 0x0100; i++) {
+ static u8 rgb[3] VAR16;
+ vgahw_set_dac_regs(get_global_seg(), rgb, i, 1);
}
- for (i = 0; i <= 0x13; i++) {
- inb(VGAREG_ACTL_RESET);
- outb(i | (ar_index & 0x20), VGAREG_ACTL_ADDRESS);
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_ACTL_READ_DATA));
- BX++;
- }
- inb(VGAREG_ACTL_RESET);
+ if ((modeset_ctl & 0x02) == 0x02)
+ perform_gray_scale_summing(0x00, 0x100);
+ }
- for (i = 0; i <= 8; i++) {
- outb(i, VGAREG_GRDC_ADDRESS);
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_GRDC_DATA));
- BX++;
- }
+ vgahw_set_mode(vmode_g);
- SET_FARVAR(ES, *(u16*)(BX+0), crtc_addr);
- BX += 2;
-
- /* XXX: read plane latches */
- SET_FARVAR(ES, *(u8*)(BX+0), 0);
- BX++;
- SET_FARVAR(ES, *(u8*)(BX+0), 0);
- BX++;
- SET_FARVAR(ES, *(u8*)(BX+0), 0);
- BX++;
- SET_FARVAR(ES, *(u8*)(BX+0), 0);
- BX++;
- }
- if (CX & 2) {
- SET_FARVAR(ES, *(u8*)(BX+0), GET_BDA(video_mode));
- BX++;
- SET_FARVAR(ES, *(u16*)(BX+0), GET_BDA(video_cols));
- BX += 2;
- SET_FARVAR(ES, *(u16*)(BX+0), GET_BDA(video_pagesize));
- BX += 2;
- SET_FARVAR(ES, *(u16*)(BX+0), GET_BDA(crtc_address));
- BX += 2;
- SET_FARVAR(ES, *(u8*)(BX+0), GET_BDA(video_rows));
- BX++;
- SET_FARVAR(ES, *(u16*)(BX+0), GET_BDA(char_height));
- BX += 2;
- SET_FARVAR(ES, *(u8*)(BX+0), GET_BDA(video_ctl));
- BX++;
- SET_FARVAR(ES, *(u8*)(BX+0), GET_BDA(video_switches));
- BX++;
- SET_FARVAR(ES, *(u8*)(BX+0), GET_BDA(modeset_ctl));
- BX++;
- SET_FARVAR(ES, *(u16*)(BX+0), GET_BDA(cursor_type));
- BX += 2;
- u16 i;
- for (i = 0; i < 8; i++) {
- SET_FARVAR(ES, *(u16*)(BX+0), GET_BDA(cursor_pos[i]));
- BX += 2;
- }
- SET_FARVAR(ES, *(u16*)(BX+0), GET_BDA(video_pagestart));
- BX += 2;
- SET_FARVAR(ES, *(u8*)(BX+0), GET_BDA(video_page));
- BX++;
- /* current font */
- SET_FARVAR(ES, *(u16*)(BX+0), GET_FARVAR(0, *(u16*)(0x1f * 4)));
- BX += 2;
- SET_FARVAR(ES, *(u16*)(BX+0), GET_FARVAR(0, *(u16*)(0x1f * 4 + 2)));
- BX += 2;
- SET_FARVAR(ES, *(u16*)(BX+0), GET_FARVAR(0, *(u16*)(0x43 * 4)));
- BX += 2;
- SET_FARVAR(ES, *(u16*)(BX+0), GET_FARVAR(0, *(u16*)(0x43 * 4 + 2)));
- BX += 2;
- }
- if (CX & 4) {
- /* XXX: check this */
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_DAC_STATE));
- BX++; /* read/write mode dac */
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_DAC_WRITE_ADDRESS));
- BX++; /* pix address */
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_PEL_MASK));
- BX++;
- // Set the whole dac always, from 0
- outb(0x00, VGAREG_DAC_WRITE_ADDRESS);
- u16 i;
- for (i = 0; i < 256 * 3; i++) {
- SET_FARVAR(ES, *(u8*)(BX+0), inb(VGAREG_DAC_DATA));
- BX++;
- }
- SET_FARVAR(ES, *(u8*)(BX+0), 0);
- BX++; /* color select register */
- }
- return BX;
-}
+ if (noclearmem == 0x00)
+ clear_screen(vmode_g);
-static u16
-biosfn_restore_video_state(u16 CX, u16 ES, u16 BX)
-{
- if (CX & 1) {
- // Reset Attribute Ctl flip-flop
- inb(VGAREG_ACTL_RESET);
+ // Set CRTC address VGA or MDA
+ u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS;
+ if (GET_GLOBAL(vmode_g->memmodel) == MTEXT)
+ crtc_addr = VGAREG_MDA_CRTC_ADDRESS;
- u16 crtc_addr = GET_FARVAR(ES, *(u16*)(BX + 0x40));
- u16 addr1 = BX;
- BX += 5;
+ // Set the BIOS mem
+ u16 cheight = GET_GLOBAL(vmode_g->cheight);
+ SET_BDA(video_mode, mode);
+ SET_BDA(video_cols, GET_GLOBAL(vmode_g->twidth));
+ SET_BDA(video_pagesize, GET_GLOBAL(vmode_g->slength));
+ SET_BDA(crtc_address, crtc_addr);
+ SET_BDA(video_rows, GET_GLOBAL(vmode_g->theight)-1);
+ SET_BDA(char_height, cheight);
+ SET_BDA(video_ctl, (0x60 | noclearmem));
+ SET_BDA(video_switches, 0xF9);
+ SET_BDA(modeset_ctl, GET_BDA(modeset_ctl) & 0x7f);
- u16 i;
- for (i = 1; i <= 4; i++) {
- outb(i, VGAREG_SEQU_ADDRESS);
- outb(GET_FARVAR(ES, *(u8*)(BX+0)), VGAREG_SEQU_DATA);
- BX++;
- }
- outb(0, VGAREG_SEQU_ADDRESS);
- outb(GET_FARVAR(ES, *(u8*)(BX+0)), VGAREG_SEQU_DATA);
- BX++;
-
- // Disable CRTC write protection
- outw(0x0011, crtc_addr);
- // Set CRTC regs
- for (i = 0; i <= 0x18; i++) {
- if (i != 0x11) {
- outb(i, crtc_addr);
- outb(GET_FARVAR(ES, *(u8*)(BX+0)), crtc_addr + 1);
- }
- BX++;
- }
- // select crtc base address
- u16 v = inb(VGAREG_READ_MISC_OUTPUT) & ~0x01;
- if (crtc_addr == VGAREG_VGA_CRTC_ADDRESS)
- v |= 0x01;
- outb(v, VGAREG_WRITE_MISC_OUTPUT);
-
- // enable write protection if needed
- outb(0x11, crtc_addr);
- outb(GET_FARVAR(ES, *(u8*)(BX - 0x18 + 0x11)), crtc_addr + 1);
-
- // Set Attribute Ctl
- u16 ar_index = GET_FARVAR(ES, *(u8*)(addr1 + 0x03));
- inb(VGAREG_ACTL_RESET);
- for (i = 0; i <= 0x13; i++) {
- outb(i | (ar_index & 0x20), VGAREG_ACTL_ADDRESS);
- outb(GET_FARVAR(ES, *(u8*)(BX+0)), VGAREG_ACTL_WRITE_DATA);
- BX++;
- }
- outb(ar_index, VGAREG_ACTL_ADDRESS);
- inb(VGAREG_ACTL_RESET);
+ // FIXME We nearly have the good tables. to be reworked
+ SET_BDA(dcc_index, 0x08); // 8 is VGA should be ok for now
+ SET_BDA(video_savetable
+ , SEGOFF(get_global_seg(), (u32)&video_save_pointer_table));
- for (i = 0; i <= 8; i++) {
- outb(i, VGAREG_GRDC_ADDRESS);
- outb(GET_FARVAR(ES, *(u8*)(BX+0)), VGAREG_GRDC_DATA);
- BX++;
- }
- BX += 2; /* crtc_addr */
- BX += 4; /* plane latches */
-
- outb(GET_FARVAR(ES, *(u8*)(addr1+0)), VGAREG_SEQU_ADDRESS);
- addr1++;
- outb(GET_FARVAR(ES, *(u8*)(addr1+0)), crtc_addr);
- addr1++;
- outb(GET_FARVAR(ES, *(u8*)(addr1+0)), VGAREG_GRDC_ADDRESS);
- addr1++;
- addr1++;
- outb(GET_FARVAR(ES, *(u8*)(addr1+0)), crtc_addr - 0x4 + 0xa);
- addr1++;
+ // FIXME
+ SET_BDA(video_msr, 0x00); // Unavailable on vanilla vga, but...
+ SET_BDA(video_pal, 0x00); // Unavailable on vanilla vga, but...
+
+ // Set cursor shape
+ if (GET_GLOBAL(vmode_g->memmodel) & TEXT)
+ set_cursor_shape(0x06, 0x07);
+ // Set cursor pos for page 0..7
+ int i;
+ for (i = 0; i < 8; i++) {
+ struct cursorpos cp = {0, 0, i};
+ set_cursor_pos(cp);
}
- if (CX & 2) {
- SET_BDA(video_mode, GET_FARVAR(ES, *(u8*)(BX+0)));
- BX++;
- SET_BDA(video_cols, GET_FARVAR(ES, *(u16*)(BX+0)));
- BX += 2;
- SET_BDA(video_pagesize, GET_FARVAR(ES, *(u16*)(BX+0)));
- BX += 2;
- SET_BDA(crtc_address, GET_FARVAR(ES, *(u16*)(BX+0)));
- BX += 2;
- SET_BDA(video_rows, GET_FARVAR(ES, *(u8*)(BX+0)));
- BX++;
- SET_BDA(char_height, GET_FARVAR(ES, *(u16*)(BX+0)));
- BX += 2;
- SET_BDA(video_ctl, GET_FARVAR(ES, *(u8*)(BX+0)));
- BX++;
- SET_BDA(video_switches, GET_FARVAR(ES, *(u8*)(BX+0)));
- BX++;
- SET_BDA(modeset_ctl, GET_FARVAR(ES, *(u8*)(BX+0)));
- BX++;
- SET_BDA(cursor_type, GET_FARVAR(ES, *(u16*)(BX+0)));
- BX += 2;
- u16 i;
- for (i = 0; i < 8; i++) {
- SET_BDA(cursor_pos[i], GET_FARVAR(ES, *(u16*)(BX+0)));
- BX += 2;
- }
- SET_BDA(video_pagestart, GET_FARVAR(ES, *(u16*)(BX+0)));
- BX += 2;
- SET_BDA(video_page, GET_FARVAR(ES, *(u8*)(BX+0)));
- BX++;
- /* current font */
- SET_IVT(0x1f, GET_FARVAR(ES, *(u16*)(BX+2)), GET_FARVAR(ES, *(u16*)(BX+0)));
- BX += 4;
- SET_IVT(0x43, GET_FARVAR(ES, *(u16*)(BX+2)), GET_FARVAR(ES, *(u16*)(BX+0)));
- BX += 4;
+
+ // Set active page 0
+ set_active_page(0x00);
+
+ // Write the fonts in memory
+ if (GET_GLOBAL(vmode_g->memmodel) & TEXT) {
+ call16_vgaint(0x1104, 0);
+ call16_vgaint(0x1103, 0);
}
- if (CX & 4) {
- BX++;
- u16 v = GET_FARVAR(ES, *(u8*)(BX+0));
- BX++;
- outb(GET_FARVAR(ES, *(u8*)(BX+0)), VGAREG_PEL_MASK);
- BX++;
- // Set the whole dac always, from 0
- outb(0x00, VGAREG_DAC_WRITE_ADDRESS);
- u16 i;
- for (i = 0; i < 256 * 3; i++) {
- outb(GET_FARVAR(ES, *(u8*)(BX+0)), VGAREG_DAC_DATA);
- BX++;
- }
- BX++;
- outb(v, VGAREG_DAC_WRITE_ADDRESS);
+ // Set the ints 0x1F and 0x43
+ SET_IVT(0x1f, SEGOFF(get_global_seg(), (u32)&vgafont8[128 * 8]));
+
+ switch (cheight) {
+ case 8:
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont8));
+ break;
+ case 14:
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont14));
+ break;
+ case 16:
+ SET_IVT(0x43, SEGOFF(get_global_seg(), (u32)vgafont16));
+ break;
}
- return BX;
}
-
-/****************************************************************
- * VGA int 10 handler
- ****************************************************************/
-
static void
handle_1000(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_video_mode(regs->al);
- switch(regs->al & 0x7F) {
- case 6:
- regs->al = 0x3F;
- break;
- case 0:
- case 1:
- case 2:
- case 3:
- case 4:
- case 5:
- case 7:
- regs->al = 0x30;
- break;
- default:
+ u8 noclearmem = regs->al & 0x80;
+ u8 mode = regs->al & 0x7f;
+
+ // Set regs->al
+ if (mode > 7)
regs->al = 0x20;
+ else if (mode == 6)
+ regs->al = 0x3f;
+ else
+ regs->al = 0x30;
+
+ if (CONFIG_VGA_CIRRUS) {
+ int ret = cirrus_set_video_mode(mode, noclearmem);
+ if (ret)
+ return;
}
+
+ if (vbe_enabled())
+ vbe_hires_enable(0);
+
+ vga_set_mode(mode, noclearmem);
}
static void
handle_1001(struct bregs *regs)
{
- biosfn_set_cursor_shape(regs->ch, regs->cl);
+ set_cursor_shape(regs->ch, regs->cl);
}
static void
handle_1002(struct bregs *regs)
{
- biosfn_set_cursor_pos(regs->bh, regs->dx);
+ struct cursorpos cp = {regs->dl, regs->dh, regs->bh};
+ set_cursor_pos(cp);
}
static void
handle_1003(struct bregs *regs)
{
- regs->cx = biosfn_get_cursor_shape(regs->bh);
- regs->dx = biosfn_get_cursor_pos(regs->bh);
+ regs->cx = get_cursor_shape(regs->bh);
+ struct cursorpos cp = get_cursor_pos(regs->bh);
+ regs->dl = cp.x;
+ regs->dh = cp.y;
}
// Read light pen pos (unimplemented)
static void
handle_1005(struct bregs *regs)
{
- biosfn_set_active_page(regs->al);
+ set_active_page(regs->al);
+}
+
+static void
+verify_scroll(struct bregs *regs, int dir)
+{
+ u8 page = GET_BDA(video_page);
+ struct cursorpos ul = {regs->cl, regs->ch, page};
+ struct cursorpos lr = {regs->dl, regs->dh, page};
+
+ u16 nbrows = GET_BDA(video_rows) + 1;
+ if (lr.y >= nbrows)
+ lr.y = nbrows - 1;
+ u16 nbcols = GET_BDA(video_cols);
+ if (lr.x >= nbcols)
+ lr.x = nbcols - 1;
+
+ if (ul.x > lr.x || ul.y > lr.y)
+ return;
+
+ u16 nblines = regs->al;
+ if (!nblines || nblines > lr.y - ul.y + 1)
+ nblines = lr.y - ul.y + 1;
+
+ vgafb_scroll(dir * nblines, regs->bh, ul, lr);
}
static void
handle_1006(struct bregs *regs)
{
- biosfn_scroll(regs->al, regs->bh, regs->ch, regs->cl, regs->dh, regs->dl
- , 0xFF, SCROLL_UP);
+ verify_scroll(regs, 1);
}
static void
handle_1007(struct bregs *regs)
{
- biosfn_scroll(regs->al, regs->bh, regs->ch, regs->cl, regs->dh, regs->dl
- , 0xFF, SCROLL_DOWN);
+ verify_scroll(regs, -1);
}
static void
handle_1008(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_char_attr(regs->bh, ®s->ax);
+ struct carattr ca = vgafb_read_char(get_cursor_pos(regs->bh));
+ regs->al = ca.car;
+ regs->ah = ca.attr;
+}
+
+static void noinline
+write_chars(u8 page, struct carattr ca, u16 count)
+{
+ struct cursorpos cp = get_cursor_pos(page);
+ while (count--) {
+ vgafb_write_char(cp, ca);
+ cp.x++;
+ }
}
static void
handle_1009(struct bregs *regs)
{
- // XXX - inline
- biosfn_write_char_attr(regs->al, regs->bh, regs->bl, regs->cx);
+ struct carattr ca = {regs->al, regs->bl, 1};
+ write_chars(regs->bh, ca, regs->cx);
}
static void
handle_100a(struct bregs *regs)
{
- // XXX - inline
- biosfn_write_char_only(regs->al, regs->bh, regs->bl, regs->cx);
+ struct carattr ca = {regs->al, regs->bl, 0};
+ write_chars(regs->bh, ca, regs->cx);
}
static void
handle_100b00(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_border_color(regs);
+ vgahw_set_border_color(regs->bl);
}
static void
handle_100b01(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_palette(regs);
+ vgahw_set_palette(regs->bl);
}
static void
static void
handle_100c(struct bregs *regs)
{
- // XXX - inline
- biosfn_write_pixel(regs->bh, regs->al, regs->cx, regs->dx);
+ // XXX - page (regs->bh) is unused
+ vgafb_write_pixel(regs->al, regs->cx, regs->dx);
}
static void
handle_100d(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_pixel(regs->bh, regs->cx, regs->dx, ®s->ax);
+ // XXX - page (regs->bh) is unused
+ regs->al = vgafb_read_pixel(regs->cx, regs->dx);
}
-static void
+static void noinline
handle_100e(struct bregs *regs)
{
// Ralf Brown Interrupt list is WRONG on bh(page)
// We do output only on the current page !
- biosfn_write_teletype(regs->al, 0xff, regs->bl, NO_ATTR);
+ struct carattr ca = {regs->al, regs->bl, 0};
+ struct cursorpos cp = get_cursor_pos(0xff);
+ write_teletype(&cp, ca);
+ set_cursor_pos(cp);
}
static void
handle_100f(struct bregs *regs)
{
- // XXX - inline
- biosfn_get_video_mode(regs);
+ regs->bh = GET_BDA(video_page);
+ regs->al = GET_BDA(video_mode) | (GET_BDA(video_ctl) & 0x80);
+ regs->ah = GET_BDA(video_cols);
}
{
if (regs->bl > 0x14)
return;
- biosfn_set_single_palette_reg(regs->bl, regs->bh);
+ vgahw_set_single_palette_reg(regs->bl, regs->bh);
}
static void
handle_101001(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_overscan_border_color(regs);
+ vgahw_set_overscan_border_color(regs->bh);
}
static void
handle_101002(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_all_palette_reg(regs);
+ vgahw_set_all_palette_reg(regs->es, (u8*)(regs->dx + 0));
}
static void
handle_101003(struct bregs *regs)
{
- // XXX - inline
- biosfn_toggle_intensity(regs);
+ vgahw_toggle_intensity(regs->bl);
}
static void
{
if (regs->bl > 0x14)
return;
- regs->bh = biosfn_get_single_palette_reg(regs->bl);
+ regs->bh = vgahw_get_single_palette_reg(regs->bl);
}
static void
handle_101008(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_overscan_border_color(regs);
+ regs->bh = vgahw_get_overscan_border_color();
}
static void
handle_101009(struct bregs *regs)
{
- // XXX - inline
- biosfn_get_all_palette_reg(regs);
+ vgahw_get_all_palette_reg(regs->es, (u8*)(regs->dx + 0));
}
-static void
+static void noinline
handle_101010(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_single_dac_reg(regs);
+ u8 rgb[3] = {regs->dh, regs->ch, regs->cl};
+ vgahw_set_dac_regs(GET_SEG(SS), rgb, regs->bx, 1);
}
static void
handle_101012(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_all_dac_reg(regs);
+ vgahw_set_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx);
}
static void
handle_101013(struct bregs *regs)
{
- // XXX - inline
- biosfn_select_video_dac_color_page(regs);
+ vgahw_select_video_dac_color_page(regs->bl, regs->bh);
}
-static void
+static void noinline
handle_101015(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_single_dac_reg(regs);
+ u8 rgb[3];
+ vgahw_get_dac_regs(GET_SEG(SS), rgb, regs->bx, 1);
+ regs->dh = rgb[0];
+ regs->ch = rgb[1];
+ regs->cl = rgb[2];
}
static void
handle_101017(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_all_dac_reg(regs);
+ vgahw_get_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx);
}
static void
handle_101018(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_pel_mask(regs);
+ vgahw_set_pel_mask(regs->bl);
}
static void
handle_101019(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_pel_mask(regs);
+ regs->bl = vgahw_get_pel_mask();
}
static void
handle_10101a(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_video_dac_state(regs);
+ vgahw_read_video_dac_state(®s->bl, ®s->bh);
}
static void
handle_10101b(struct bregs *regs)
{
- biosfn_perform_gray_scale_summing(regs->bx, regs->cx);
+ perform_gray_scale_summing(regs->bx, regs->cx);
}
static void
static void
handle_101100(struct bregs *regs)
{
- // XXX - inline
- biosfn_load_text_user_pat(regs->al, regs->es, 0 // XXX - regs->bp
- , regs->cx, regs->dx, regs->bl, regs->bh);
+ vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx
+ , regs->dx, regs->bl, regs->bh);
}
static void
handle_101101(struct bregs *regs)
{
- // XXX - inline
- biosfn_load_text_8_14_pat(regs->al, regs->bl);
+ vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14);
}
static void
handle_101102(struct bregs *regs)
{
- // XXX - inline
- biosfn_load_text_8_8_pat(regs->al, regs->bl);
+ vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8);
}
static void
handle_101103(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_text_block_specifier(regs);
+ vgahw_set_text_block_specifier(regs->bl);
}
static void
handle_101104(struct bregs *regs)
{
- // XXX - inline
- biosfn_load_text_8_16_pat(regs->al, regs->bl);
+ vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16);
}
static void
handle_101110(struct bregs *regs)
{
- handle_101100(regs);
+ vgafb_load_font(regs->es, (void*)(regs->bp+0), regs->cx
+ , regs->dx, regs->bl, regs->bh);
+ set_scan_lines(regs->bh);
}
static void
handle_101111(struct bregs *regs)
{
- handle_101101(regs);
+ vgafb_load_font(get_global_seg(), vgafont14, 0x100, 0, regs->bl, 14);
+ set_scan_lines(14);
}
static void
handle_101112(struct bregs *regs)
{
- handle_101102(regs);
+ vgafb_load_font(get_global_seg(), vgafont8, 0x100, 0, regs->bl, 8);
+ set_scan_lines(8);
}
static void
handle_101114(struct bregs *regs)
{
- handle_101104(regs);
+ vgafb_load_font(get_global_seg(), vgafont16, 0x100, 0, regs->bl, 16);
+ set_scan_lines(16);
}
static void
handle_101130(struct bregs *regs)
{
- // XXX - inline
- biosfn_get_font_info(regs->bh, ®s->es, 0 // ®s->bp
- , ®s->cx, ®s->dx);
+ switch (regs->bh) {
+ case 0x00: {
+ struct segoff_s so = GET_IVT(0x1f);
+ regs->es = so.seg;
+ regs->bp = so.offset;
+ break;
+ }
+ case 0x01: {
+ struct segoff_s so = GET_IVT(0x43);
+ regs->es = so.seg;
+ regs->bp = so.offset;
+ break;
+ }
+ case 0x02:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont14;
+ break;
+ case 0x03:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont8;
+ break;
+ case 0x04:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont8 + 128 * 8;
+ break;
+ case 0x05:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont14alt;
+ break;
+ case 0x06:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont16;
+ break;
+ case 0x07:
+ regs->es = get_global_seg();
+ regs->bp = (u32)vgafont16alt;
+ break;
+ default:
+ dprintf(1, "Get font info BH(%02x) was discarded\n", regs->bh);
+ return;
+ }
+ // Set byte/char of on screen font
+ regs->cx = GET_BDA(char_height) & 0xff;
+
+ // Set Highest char row
+ regs->dx = GET_BDA(video_rows);
}
static void
static void
handle_101210(struct bregs *regs)
{
- // XXX - inline
- biosfn_get_ega_info(regs);
+ u16 crtc_addr = GET_BDA(crtc_address);
+ if (crtc_addr == VGAREG_MDA_CRTC_ADDRESS)
+ regs->bx = 0x0103;
+ else
+ regs->bx = 0x0003;
+ regs->cx = GET_BDA(video_switches) & 0x0f;
}
static void
handle_101230(struct bregs *regs)
{
- // XXX - inline
- biosfn_select_vert_res(regs);
+ u8 mctl = GET_BDA(modeset_ctl);
+ u8 vswt = GET_BDA(video_switches);
+ switch (regs->al) {
+ case 0x00:
+ // 200 lines
+ mctl = (mctl & ~0x10) | 0x80;
+ vswt = (vswt & ~0x0f) | 0x08;
+ break;
+ case 0x01:
+ // 350 lines
+ mctl &= ~0x90;
+ vswt = (vswt & ~0x0f) | 0x09;
+ break;
+ case 0x02:
+ // 400 lines
+ mctl = (mctl & ~0x80) | 0x10;
+ vswt = (vswt & ~0x0f) | 0x09;
+ break;
+ default:
+ dprintf(1, "Select vert res (%02x) was discarded\n", regs->al);
+ break;
+ }
+ SET_BDA(modeset_ctl, mctl);
+ SET_BDA(video_switches, vswt);
+ regs->al = 0x12;
}
static void
handle_101231(struct bregs *regs)
{
- // XXX - inline
- biosfn_enable_default_palette_loading(regs);
+ u8 v = (regs->al & 0x01) << 3;
+ u8 mctl = GET_BDA(video_ctl) & ~0x08;
+ SET_BDA(video_ctl, mctl | v);
+ regs->al = 0x12;
}
static void
handle_101232(struct bregs *regs)
{
- // XXX - inline
- biosfn_enable_video_addressing(regs);
+ vgahw_enable_video_addressing(regs->al);
+ regs->al = 0x12;
}
static void
handle_101233(struct bregs *regs)
{
- // XXX - inline
- biosfn_enable_grayscale_summing(regs);
+ u8 v = ((regs->al << 1) & 0x02) ^ 0x02;
+ u8 v2 = GET_BDA(modeset_ctl) & ~0x02;
+ SET_BDA(modeset_ctl, v | v2);
+ regs->al = 0x12;
}
static void
handle_101234(struct bregs *regs)
{
- // XXX - inline
- biosfn_enable_cursor_emulation(regs);
+ u8 v = (regs->al & 0x01) ^ 0x01;
+ u8 v2 = GET_BDA(modeset_ctl) & ~0x01;
+ SET_BDA(modeset_ctl, v | v2);
+ regs->al = 0x12;
}
static void
}
-static void
+// Write string
+static void noinline
handle_1013(struct bregs *regs)
{
- // XXX - inline
- biosfn_write_string(regs->al, regs->bh, regs->bl, regs->cx
- , regs->dh, regs->dl, regs->es, 0); // regs->bp);
+ struct cursorpos cp = {regs->dl, regs->dh, regs->bh};
+ // if row=0xff special case : use current cursor position
+ if (cp.y == 0xff)
+ cp = get_cursor_pos(cp.page);
+ u8 flag = regs->al;
+ if (flag & 2)
+ write_attr_string(&cp, regs->cx, regs->es, (void*)(regs->bp + 0));
+ else
+ write_string(&cp, regs->bl, regs->cx, regs->es, (void*)(regs->bp + 0));
+
+ if (flag & 1)
+ set_cursor_pos(cp);
}
static void
handle_101a00(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_display_code(regs);
+ regs->bx = GET_BDA(dcc_index);
+ regs->al = 0x1a;
}
static void
handle_101a01(struct bregs *regs)
{
- // XXX - inline
- biosfn_set_display_code(regs);
+ SET_BDA(dcc_index, regs->bl);
+ dprintf(1, "Alternate Display code (%02x) was discarded\n", regs->bh);
+ regs->al = 0x1a;
}
static void
}
+struct funcInfo {
+ struct segoff_s static_functionality;
+ u8 bda_0x49[30];
+ u8 bda_0x84[3];
+ u8 dcc_index;
+ u8 dcc_alt;
+ u16 colors;
+ u8 pages;
+ u8 scan_lines;
+ u8 primary_char;
+ u8 secondar_char;
+ u8 misc;
+ u8 non_vga_mode;
+ u8 reserved_2f[2];
+ u8 video_mem;
+ u8 save_flags;
+ u8 disp_info;
+ u8 reserved_34[12];
+};
+
static void
handle_101b(struct bregs *regs)
{
- // XXX - inline
- biosfn_read_state_info(regs->bx, regs->es, regs->di);
+ u16 seg = regs->es;
+ struct funcInfo *info = (void*)(regs->di+0);
+ memset_far(seg, info, 0, sizeof(*info));
+ // Address of static functionality table
+ SET_FARVAR(seg, info->static_functionality
+ , SEGOFF(get_global_seg(), (u32)static_functionality));
+
+ // Hard coded copy from BIOS area. Should it be cleaner ?
+ memcpy_far(seg, info->bda_0x49, SEG_BDA, (void*)0x49
+ , sizeof(info->bda_0x49));
+ memcpy_far(seg, info->bda_0x84, SEG_BDA, (void*)0x84
+ , sizeof(info->bda_0x84));
+
+ SET_FARVAR(seg, info->dcc_index, GET_BDA(dcc_index));
+ SET_FARVAR(seg, info->colors, 16);
+ SET_FARVAR(seg, info->pages, 8);
+ SET_FARVAR(seg, info->scan_lines, 2);
+ SET_FARVAR(seg, info->video_mem, 3);
regs->al = 0x1B;
}
static void
handle_101c00(struct bregs *regs)
{
- // XXX - inline
- regs->bx = biosfn_read_video_state_size(regs->cx);
+ u16 flags = regs->cx;
+ u16 size = 0;
+ if (flags & 1)
+ size += sizeof(struct saveVideoHardware);
+ if (flags & 2)
+ size += sizeof(struct saveBDAstate);
+ if (flags & 4)
+ size += sizeof(struct saveDACcolors);
+ regs->bx = size;
+ regs->al = 0x1c;
}
static void
handle_101c01(struct bregs *regs)
{
- // XXX - inline
- biosfn_save_video_state(regs->cx, regs->es, regs->bx);
+ u16 flags = regs->cx;
+ u16 seg = regs->es;
+ void *data = (void*)(regs->bx+0);
+ if (flags & 1) {
+ vgahw_save_state(seg, data);
+ data += sizeof(struct saveVideoHardware);
+ }
+ if (flags & 2) {
+ save_bda_state(seg, data);
+ data += sizeof(struct saveBDAstate);
+ }
+ if (flags & 4)
+ vgahw_save_dac_state(seg, data);
+ regs->al = 0x1c;
}
static void
handle_101c02(struct bregs *regs)
{
- // XXX - inline
- biosfn_restore_video_state(regs->cx, regs->es, regs->bx);
+ u16 flags = regs->cx;
+ u16 seg = regs->es;
+ void *data = (void*)(regs->bx+0);
+ if (flags & 1) {
+ vgahw_restore_state(seg, data);
+ data += sizeof(struct saveVideoHardware);
+ }
+ if (flags & 2) {
+ restore_bda_state(seg, data);
+ data += sizeof(struct saveBDAstate);
+ }
+ if (flags & 4)
+ vgahw_restore_dac_state(seg, data);
+ regs->al = 0x1c;
}
static void
}
}
-
static void
handle_104f00(struct bregs *regs)
{
- // XXX - vbe_biosfn_return_controller_information(&AX,ES,DI);
- // XXX - OR cirrus_vesa_00h
+ u16 seg = regs->es;
+ struct vbe_info *info = (void*)(regs->di+0);
+
+ if (GET_FARVAR(seg, info->signature) == VBE2_SIGNATURE) {
+ dprintf(4, "Get VBE Controller: VBE2 Signature found\n");
+ } else if (GET_FARVAR(seg, info->signature) == VESA_SIGNATURE) {
+ dprintf(4, "Get VBE Controller: VESA Signature found\n");
+ } else {
+ dprintf(4, "Get VBE Controller: Invalid Signature\n");
+ }
+
+ memset_far(seg, info, 0, sizeof(*info));
+
+ SET_FARVAR(seg, info->signature, VESA_SIGNATURE);
+
+ SET_FARVAR(seg, info->version, 0x0200);
+
+ SET_FARVAR(seg, info->oem_string,
+ SEGOFF(get_global_seg(), (u32)VBE_OEM_STRING));
+ SET_FARVAR(seg, info->capabilities[0], 0x1); /* 8BIT DAC */
+
+ /* We generate our mode list in the reserved field of the info block */
+ SET_FARVAR(seg, info->video_mode, SEGOFF(seg, regs->di + 34));
+
+ /* Total memory (in 64 blocks) */
+ SET_FARVAR(seg, info->total_memory, vbe_total_mem());
+
+ SET_FARVAR(seg, info->oem_vendor_string,
+ SEGOFF(get_global_seg(), (u32)VBE_VENDOR_STRING));
+ SET_FARVAR(seg, info->oem_product_string,
+ SEGOFF(get_global_seg(), (u32)VBE_PRODUCT_STRING));
+ SET_FARVAR(seg, info->oem_revision_string,
+ SEGOFF(get_global_seg(), (u32)VBE_REVISION_STRING));
+
+ /* Fill list of modes */
+ vbe_list_modes(seg, regs->di + 32);
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
handle_104f01(struct bregs *regs)
{
- // XXX - vbe_biosfn_return_mode_information(&AX,CX,ES,DI);
- // XXX - OR cirrus_vesa_01h
+ u16 seg = regs->es;
+ struct vbe_mode_info *info = (void*)(regs->di+0);
+ u16 mode = regs->cx;
+ struct vbe_modeinfo modeinfo;
+ int rc;
+
+ dprintf(1, "VBE mode info request: %x\n", mode);
+
+ rc = vbe_mode_info(mode, &modeinfo);
+ if (rc) {
+ dprintf(1, "VBE mode %x not found\n", mode);
+ regs->ax = 0x100;
+ return;
+ }
+
+ u16 mode_attr = VBE_MODE_ATTRIBUTE_SUPPORTED |
+ VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE |
+ VBE_MODE_ATTRIBUTE_COLOR_MODE |
+ VBE_MODE_ATTRIBUTE_GRAPHICS_MODE;
+ if (modeinfo.depth == 4)
+ mode_attr |= VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT;
+ else
+ mode_attr |= VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE;
+ SET_FARVAR(seg, info->mode_attributes, mode_attr);
+ SET_FARVAR(seg, info->winA_attributes,
+ VBE_WINDOW_ATTRIBUTE_RELOCATABLE |
+ VBE_WINDOW_ATTRIBUTE_READABLE |
+ VBE_WINDOW_ATTRIBUTE_WRITEABLE);
+ SET_FARVAR(seg, info->winB_attributes, 0);
+ SET_FARVAR(seg, info->win_granularity, 64); /* Bank size 64K */
+ SET_FARVAR(seg, info->win_size, 64); /* Bank size 64K */
+ SET_FARVAR(seg, info->winA_seg, 0xA000);
+ SET_FARVAR(seg, info->winB_seg, 0x0);
+ SET_FARVAR(seg, info->win_func_ptr, 0x0);
+ SET_FARVAR(seg, info->bytes_per_scanline, modeinfo.linesize);
+ SET_FARVAR(seg, info->xres, modeinfo.width);
+ SET_FARVAR(seg, info->yres, modeinfo.height);
+ SET_FARVAR(seg, info->xcharsize, 8);
+ SET_FARVAR(seg, info->ycharsize, 16);
+ if (modeinfo.depth == 4)
+ SET_FARVAR(seg, info->planes, 4);
+ else
+ SET_FARVAR(seg, info->planes, 1);
+ SET_FARVAR(seg, info->bits_per_pixel, modeinfo.depth);
+ SET_FARVAR(seg, info->banks,
+ (modeinfo.linesize * modeinfo.height + 65535) / 65536);
+ if (modeinfo.depth == 4)
+ SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PLANAR);
+ else if (modeinfo.depth == 8)
+ SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_PACKED_PIXEL);
+ else
+ SET_FARVAR(seg, info->mem_model, VBE_MEMORYMODEL_DIRECT_COLOR);
+ SET_FARVAR(seg, info->bank_size, 0);
+ u32 pages = modeinfo.vram_size / (modeinfo.height * modeinfo.linesize);
+ if (modeinfo.depth == 4)
+ SET_FARVAR(seg, info->pages, (pages / 4) - 1);
+ else
+ SET_FARVAR(seg, info->pages, pages - 1);
+ SET_FARVAR(seg, info->reserved0, 1);
+
+ u8 r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
+
+ switch (modeinfo.depth) {
+ case 15: r_size = 5; r_pos = 10; g_size = 5; g_pos = 5;
+ b_size = 5; b_pos = 0; a_size = 1; a_pos = 15; break;
+ case 16: r_size = 5; r_pos = 11; g_size = 6; g_pos = 5;
+ b_size = 5; b_pos = 0; a_size = 0; a_pos = 0; break;
+ case 24: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
+ b_size = 8; b_pos = 0; a_size = 0; a_pos = 0; break;
+ case 32: r_size = 8; r_pos = 16; g_size = 8; g_pos = 8;
+ b_size = 8; b_pos = 0; a_size = 8; a_pos = 24; break;
+ default: r_size = 0; r_pos = 0; g_size = 0; g_pos = 0;
+ b_size = 0; b_pos = 0; a_size = 0; a_pos = 0; break;
+ }
+
+ SET_FARVAR(seg, info->red_size, r_size);
+ SET_FARVAR(seg, info->red_pos, r_pos);
+ SET_FARVAR(seg, info->green_size, g_size);
+ SET_FARVAR(seg, info->green_pos, g_pos);
+ SET_FARVAR(seg, info->blue_size, b_size);
+ SET_FARVAR(seg, info->blue_pos, b_pos);
+ SET_FARVAR(seg, info->alpha_size, a_size);
+ SET_FARVAR(seg, info->alpha_pos, a_pos);
+
+ if (modeinfo.depth == 32)
+ SET_FARVAR(seg, info->directcolor_info,
+ VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE);
+ else
+ SET_FARVAR(seg, info->directcolor_info, 0);
+
+ if (modeinfo.depth > 4)
+ SET_FARVAR(seg, info->phys_base, modeinfo.phys_base);
+ else
+ SET_FARVAR(seg, info->phys_base, 0);
+
+ SET_FARVAR(seg, info->reserved1, 0);
+ SET_FARVAR(seg, info->reserved2, 0);
+ SET_FARVAR(seg, info->linear_bytes_per_scanline, modeinfo.linesize);
+ SET_FARVAR(seg, info->bank_pages, 0);
+ SET_FARVAR(seg, info->linear_pages, 0);
+ SET_FARVAR(seg, info->linear_red_size, r_size);
+ SET_FARVAR(seg, info->linear_red_pos, r_pos);
+ SET_FARVAR(seg, info->linear_green_size, g_size);
+ SET_FARVAR(seg, info->linear_green_pos, g_pos);
+ SET_FARVAR(seg, info->linear_blue_size, b_size);
+ SET_FARVAR(seg, info->linear_blue_pos, b_pos);
+ SET_FARVAR(seg, info->linear_alpha_size, a_size);
+ SET_FARVAR(seg, info->linear_alpha_pos, a_pos);
+ SET_FARVAR(seg, info->pixclock_max, 0);
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
handle_104f02(struct bregs *regs)
{
- // XXX - vbe_biosfn_set_mode(&AX,BX,ES,DI);
- // XXX - OR cirrus_vesa_02h
+ //u16 seg = regs->es;
+ //struct vbe_crtc_info *crtc_info = (void*)(regs->di+0);
+ u16 mode = regs->bx;
+ struct vbe_modeinfo modeinfo;
+ int rc;
+
+ dprintf(1, "VBE mode set: %x\n", mode);
+
+ if (mode < 0x100) { /* VGA */
+ dprintf(1, "set VGA mode %x\n", mode);
+
+ vbe_hires_enable(0);
+ vga_set_mode(mode, 0);
+ } else { /* VBE */
+ rc = vbe_mode_info(mode & 0x1ff, &modeinfo);
+ if (rc) {
+ dprintf(1, "VBE mode %x not found\n", mode & 0x1ff);
+ regs->ax = 0x100;
+ return;
+ }
+ vbe_hires_enable(1);
+ vbe_set_mode(mode & 0x1ff, &modeinfo);
+
+ if (mode & 0x4000) {
+ /* Linear frame buffer */
+ /* XXX: ??? */
+ }
+ if (!(mode & 0x8000)) {
+ vbe_clear_scr();
+ }
+ }
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
handle_104f03(struct bregs *regs)
{
- // XXX - vbe_biosfn_return_current_mode
- // XXX - OR cirrus_vesa_03h
+ if (!vbe_hires_enabled()) {
+ regs->bx = GET_BDA(video_mode);
+ } else {
+ regs->bx = vbe_curr_mode();
+ }
+
+ dprintf(1, "VBE current mode=%x\n", regs->bx);
+
+ regs->al = regs->ah; /* 0x4F, Function supported */
+ regs->ah = 0x0; /* 0x0, Function call successful */
}
static void
handle_104f04(struct bregs *regs)
{
- // XXX - vbe_biosfn_save_restore_state(&AX, CX, DX, ES, &BX);
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f05(struct bregs *regs)
{
- // XXX - vbe_biosfn_display_window_control
- // XXX - OR cirrus_vesa_05h
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f06(struct bregs *regs)
{
- // XXX - vbe_biosfn_set_get_logical_scan_line_length
- // XXX - OR cirrus_vesa_06h
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f07(struct bregs *regs)
{
- // XXX - vbe_biosfn_set_get_display_start
- // XXX - OR cirrus_vesa_07h
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f08(struct bregs *regs)
{
- // XXX - vbe_biosfn_set_get_dac_palette_format
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
handle_104f0a(struct bregs *regs)
{
- // XXX - vbe_biosfn_return_protected_mode_interface
+ debug_enter(regs, DEBUG_VGA_10);
+ regs->ax = 0x0100;
}
static void
static void
handle_104f(struct bregs *regs)
{
- if (! CONFIG_VBE) {
+ if (!vbe_enabled()) {
handle_104fXX(regs);
return;
}
- // XXX - check vbe_has_vbe_display()?
-
switch (regs->al) {
case 0x00: handle_104f00(regs); break;
case 0x01: handle_104f01(regs); break;
****************************************************************/
static void
-init_bios_area()
+init_bios_area(void)
{
// init detected hardware BIOS Area
// set 80x25 color (not clear from RBIL but usual)
SET_BDA(video_msr, 0x09);
}
-static void
-init_vga_card()
-{
- // switch to color mode and enable CPU access 480 lines
- outb(0xc3, VGAREG_WRITE_MISC_OUTPUT);
- // more than 64k 3C4/04
- outb(0x04, VGAREG_SEQU_ADDRESS);
- outb(0x02, VGAREG_SEQU_DATA);
-}
-
void VISIBLE16
vga_post(struct bregs *regs)
{
debug_enter(regs, DEBUG_VGA_POST);
- init_vga_card();
+ vgahw_init();
+
+ if (CONFIG_VGA_GEODELX)
+ geodelx_init();
init_bios_area();
- // vbe_init();
+ vbe_init(regs->ah, regs->al);
extern void entry_10(void);
- SET_IVT(0x10, get_global_seg(), (u32)entry_10);
+ SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10));
- if (CONFIG_CIRRUS)
+ if (CONFIG_VGA_CIRRUS)
cirrus_init();
// XXX - clear screen and display info
- // XXX: fill it
- SET_VGA(video_save_pointer_table[0], (u32)video_param_table);
- SET_VGA(video_save_pointer_table[1], get_global_seg());
+ build_video_param();
// Fixup checksum
extern u8 _rom_header_size, _rom_header_checksum;
projects / seabios.git / blobdiff