// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "ioport.h" // outb
-#include "bregs.h" // struct bregs
#include "farptr.h" // SET_FARVAR
+#include "biosvar.h" // GET_BDA
#include "vgatables.h" // VGAREG_*
+// TODO
+// * replace direct in/out calls with wrapper functions
+
/****************************************************************
* Attribute control
****************************************************************/
void
-biosfn_set_border_color(struct bregs *regs)
+vgahw_screen_disable(void)
{
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;
+}
+
+void
+vgahw_screen_enable(void)
+{
+ inb(VGAREG_ACTL_RESET);
+ outb(0x20, VGAREG_ACTL_ADDRESS);
+}
+void
+vgahw_set_border_color(u8 color)
+{
+ inb(VGAREG_ACTL_RESET);
+ outb(0x00, VGAREG_ACTL_ADDRESS);
+ u8 v1 = color & 0x0f;
+ if (v1 & 0x08)
+ v1 += 0x08;
+ outb(v1, VGAREG_ACTL_WRITE_DATA);
+
+ u8 v2 = color & 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);
+ u8 cur = inb(VGAREG_ACTL_READ_DATA);
+ cur &= 0xef;
+ cur |= v2;
+ outb(cur, VGAREG_ACTL_WRITE_DATA);
}
outb(0x20, VGAREG_ACTL_ADDRESS);
}
void
-biosfn_set_overscan_border_color(struct bregs *regs)
+vgahw_set_overscan_border_color(u8 color)
{
inb(VGAREG_ACTL_RESET);
outb(0x11, VGAREG_ACTL_ADDRESS);
- outb(regs->bh, VGAREG_ACTL_WRITE_DATA);
+ outb(color, VGAREG_ACTL_WRITE_DATA);
outb(0x20, VGAREG_ACTL_ADDRESS);
}
-void
-biosfn_read_overscan_border_color(struct bregs *regs)
+u8
+vgahw_get_overscan_border_color(void)
{
inb(VGAREG_ACTL_RESET);
outb(0x11, VGAREG_ACTL_ADDRESS);
- regs->bh = inb(VGAREG_ACTL_READ_DATA);
+ u8 v = inb(VGAREG_ACTL_READ_DATA);
inb(VGAREG_ACTL_RESET);
outb(0x20, VGAREG_ACTL_ADDRESS);
+ return v;
}
void
-biosfn_set_palette(struct bregs *regs)
+vgahw_set_palette(u8 palid)
{
inb(VGAREG_ACTL_RESET);
- u8 bl = regs->bl & 0x01;
+ palid &= 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);
+ u8 v = inb(VGAREG_ACTL_READ_DATA);
+ v &= 0xfe;
+ v |= palid;
+ outb(v, VGAREG_ACTL_WRITE_DATA);
}
outb(0x20, VGAREG_ACTL_ADDRESS);
}
void
-biosfn_set_single_palette_reg(u8 reg, u8 val)
+vgahw_set_single_palette_reg(u8 reg, u8 val)
{
inb(VGAREG_ACTL_RESET);
outb(reg, VGAREG_ACTL_ADDRESS);
}
u8
-biosfn_get_single_palette_reg(u8 reg)
+vgahw_get_single_palette_reg(u8 reg)
{
inb(VGAREG_ACTL_RESET);
outb(reg, VGAREG_ACTL_ADDRESS);
}
void
-biosfn_set_all_palette_reg(struct bregs *regs)
+vgahw_set_all_palette_reg(u16 seg, u8 *data_far)
{
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);
+ u8 val = GET_FARVAR(seg, *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(GET_FARVAR(seg, *data_far), VGAREG_ACTL_WRITE_DATA);
outb(0x20, VGAREG_ACTL_ADDRESS);
}
void
-biosfn_get_all_palette_reg(struct bregs *regs)
+vgahw_get_all_palette_reg(u16 seg, u8 *data_far)
{
- 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));
+ SET_FARVAR(seg, *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));
+ SET_FARVAR(seg, *data_far, inb(VGAREG_ACTL_READ_DATA));
inb(VGAREG_ACTL_RESET);
outb(0x20, VGAREG_ACTL_ADDRESS);
}
void
-biosfn_toggle_intensity(struct bregs *regs)
+vgahw_toggle_intensity(u8 flag)
{
inb(VGAREG_ACTL_RESET);
outb(0x10, VGAREG_ACTL_ADDRESS);
- u8 val = (inb(VGAREG_ACTL_READ_DATA) & 0x7f) | ((regs->bl & 0x01) << 3);
+ u8 val = (inb(VGAREG_ACTL_READ_DATA) & 0xf7) | ((flag & 0x01) << 3);
outb(val, VGAREG_ACTL_WRITE_DATA);
outb(0x20, VGAREG_ACTL_ADDRESS);
}
void
-biosfn_select_video_dac_color_page(struct bregs *regs)
+vgahw_select_video_dac_color_page(u8 flag, u8 data)
{
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);
+ if (!(flag & 0x01)) {
+ // select paging mode
+ val = (val & 0x7f) | (data << 7);
outb(val, VGAREG_ACTL_WRITE_DATA);
outb(0x20, VGAREG_ACTL_ADDRESS);
return;
}
+ // select page
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);
+ data <<= 2;
+ data &= 0x0f;
+ outb(data, VGAREG_ACTL_WRITE_DATA);
outb(0x20, VGAREG_ACTL_ADDRESS);
}
void
-biosfn_read_video_dac_state(struct bregs *regs)
+vgahw_read_video_dac_state(u8 *pmode, u8 *curpage)
{
inb(VGAREG_ACTL_RESET);
outb(0x10, VGAREG_ACTL_ADDRESS);
inb(VGAREG_ACTL_RESET);
outb(0x20, VGAREG_ACTL_ADDRESS);
- regs->bl = val1;
- regs->bh = val2;
+ *pmode = val1;
+ *curpage = val2;
}
****************************************************************/
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);
-}
-
-void
-biosfn_read_single_dac_reg(struct bregs *regs)
+vgahw_set_dac_regs(u16 seg, u8 *data_far, u8 start, int count)
{
- 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);
-}
-
-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;
+ outb(start, VGAREG_DAC_WRITE_ADDRESS);
while (count) {
- outb(GET_FARVAR(regs->es, *data_far), VGAREG_DAC_DATA);
+ outb(GET_FARVAR(seg, *data_far), VGAREG_DAC_DATA);
data_far++;
- outb(GET_FARVAR(regs->es, *data_far), VGAREG_DAC_DATA);
+ outb(GET_FARVAR(seg, *data_far), VGAREG_DAC_DATA);
data_far++;
- outb(GET_FARVAR(regs->es, *data_far), VGAREG_DAC_DATA);
+ outb(GET_FARVAR(seg, *data_far), VGAREG_DAC_DATA);
data_far++;
count--;
}
}
void
-biosfn_read_all_dac_reg(struct bregs *regs)
+vgahw_get_dac_regs(u16 seg, u8 *data_far, u8 start, int count)
{
- outb(regs->bl, VGAREG_DAC_READ_ADDRESS);
- u8 *data_far = (u8*)(regs->dx + 0);
- int count = regs->cx;
+ outb(start, VGAREG_DAC_READ_ADDRESS);
while (count) {
- SET_FARVAR(regs->es, *data_far, inb(VGAREG_DAC_DATA));
+ SET_FARVAR(seg, *data_far, inb(VGAREG_DAC_DATA));
data_far++;
- SET_FARVAR(regs->es, *data_far, inb(VGAREG_DAC_DATA));
+ SET_FARVAR(seg, *data_far, inb(VGAREG_DAC_DATA));
data_far++;
- SET_FARVAR(regs->es, *data_far, inb(VGAREG_DAC_DATA));
+ SET_FARVAR(seg, *data_far, inb(VGAREG_DAC_DATA));
data_far++;
count--;
}
}
void
-biosfn_set_pel_mask(struct bregs *regs)
+vgahw_set_pel_mask(u8 val)
+{
+ outb(val, VGAREG_PEL_MASK);
+}
+
+u8
+vgahw_get_pel_mask(void)
+{
+ return inb(VGAREG_PEL_MASK);
+}
+
+void
+vgahw_save_dac_state(u16 seg, struct saveDACcolors *info)
{
- outb(regs->bl, VGAREG_PEL_MASK);
+ /* XXX: check this */
+ SET_FARVAR(seg, info->rwmode, inb(VGAREG_DAC_STATE));
+ SET_FARVAR(seg, info->peladdr, inb(VGAREG_DAC_WRITE_ADDRESS));
+ SET_FARVAR(seg, info->pelmask, inb(VGAREG_PEL_MASK));
+ vgahw_get_dac_regs(seg, info->dac, 0, 256);
+ SET_FARVAR(seg, info->color_select, 0);
}
void
-biosfn_read_pel_mask(struct bregs *regs)
+vgahw_restore_dac_state(u16 seg, struct saveDACcolors *info)
{
- regs->bl = inb(VGAREG_PEL_MASK);
+ outb(GET_FARVAR(seg, info->pelmask), VGAREG_PEL_MASK);
+ vgahw_set_dac_regs(seg, info->dac, 0, 256);
+ outb(GET_FARVAR(seg, info->peladdr), VGAREG_DAC_WRITE_ADDRESS);
}
****************************************************************/
void
-biosfn_set_text_block_specifier(struct bregs *regs)
+vgahw_sequ_write(u8 index, u8 value)
+{
+ outw((value<<8) | index, VGAREG_SEQU_ADDRESS);
+}
+
+void
+vgahw_grdc_write(u8 index, u8 value)
{
- outw((regs->bl << 8) | 0x03, VGAREG_SEQU_ADDRESS);
+ outw((value<<8) | index, VGAREG_GRDC_ADDRESS);
}
void
-get_font_access()
+vgahw_set_text_block_specifier(u8 spec)
+{
+ outw((spec << 8) | 0x03, VGAREG_SEQU_ADDRESS);
+}
+
+void
+get_font_access(void)
{
outw(0x0100, VGAREG_SEQU_ADDRESS);
outw(0x0402, VGAREG_SEQU_ADDRESS);
}
void
-release_font_access()
+release_font_access(void)
{
outw(0x0100, VGAREG_SEQU_ADDRESS);
outw(0x0302, VGAREG_SEQU_ADDRESS);
}
+/****************************************************************
+ * CRTC registers
+ ****************************************************************/
+
+static u16
+get_crtc(void)
+{
+ return GET_BDA(crtc_address);
+}
+
+void
+vgahw_set_cursor_shape(u8 start, u8 end)
+{
+ u16 crtc_addr = get_crtc();
+ outb(0x0a, crtc_addr);
+ outb(start, crtc_addr + 1);
+ outb(0x0b, crtc_addr);
+ outb(end, crtc_addr + 1);
+}
+
+void
+vgahw_set_active_page(u16 address)
+{
+ u16 crtc_addr = get_crtc();
+ outb(0x0c, crtc_addr);
+ outb((address & 0xff00) >> 8, crtc_addr + 1);
+ outb(0x0d, crtc_addr);
+ outb(address & 0x00ff, crtc_addr + 1);
+}
+
+void
+vgahw_set_cursor_pos(u16 address)
+{
+ u16 crtc_addr = get_crtc();
+ outb(0x0e, crtc_addr);
+ outb((address & 0xff00) >> 8, crtc_addr + 1);
+ outb(0x0f, crtc_addr);
+ outb(address & 0x00ff, crtc_addr + 1);
+}
+
+void
+vgahw_set_scan_lines(u8 lines)
+{
+ u16 crtc_addr = get_crtc();
+ outb(0x09, crtc_addr);
+ u8 crtc_r9 = inb(crtc_addr + 1);
+ crtc_r9 = (crtc_r9 & 0xe0) | (lines - 1);
+ outb(crtc_r9, crtc_addr + 1);
+}
+
+// Get vertical display end
+u16
+vgahw_get_vde(void)
+{
+ u16 crtc_addr = get_crtc();
+ 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);
+ return vde;
+}
+
+
+/****************************************************************
+ * Save/Restore/Set state
+ ****************************************************************/
+
+void
+vgahw_save_state(u16 seg, struct saveVideoHardware *info)
+{
+ u16 crtc_addr = get_crtc();
+ SET_FARVAR(seg, info->sequ_index, inb(VGAREG_SEQU_ADDRESS));
+ SET_FARVAR(seg, info->crtc_index, inb(crtc_addr));
+ SET_FARVAR(seg, info->grdc_index, inb(VGAREG_GRDC_ADDRESS));
+ inb(VGAREG_ACTL_RESET);
+ u16 ar_index = inb(VGAREG_ACTL_ADDRESS);
+ SET_FARVAR(seg, info->actl_index, ar_index);
+ SET_FARVAR(seg, info->feature, inb(VGAREG_READ_FEATURE_CTL));
+
+ u16 i;
+ for (i=0; i<4; i++) {
+ outb(i+1, VGAREG_SEQU_ADDRESS);
+ SET_FARVAR(seg, info->sequ_regs[i], inb(VGAREG_SEQU_DATA));
+ }
+ outb(0, VGAREG_SEQU_ADDRESS);
+ SET_FARVAR(seg, info->sequ0, inb(VGAREG_SEQU_DATA));
+
+ for (i=0; i<25; i++) {
+ outb(i, crtc_addr);
+ SET_FARVAR(seg, info->crtc_regs[i], inb(crtc_addr + 1));
+ }
+
+ for (i=0; i<20; i++) {
+ inb(VGAREG_ACTL_RESET);
+ outb(i | (ar_index & 0x20), VGAREG_ACTL_ADDRESS);
+ SET_FARVAR(seg, info->actl_regs[i], inb(VGAREG_ACTL_READ_DATA));
+ }
+ inb(VGAREG_ACTL_RESET);
+
+ for (i=0; i<9; i++) {
+ outb(i, VGAREG_GRDC_ADDRESS);
+ SET_FARVAR(seg, info->grdc_regs[i], inb(VGAREG_GRDC_DATA));
+ }
+
+ SET_FARVAR(seg, info->crtc_addr, crtc_addr);
+
+ /* XXX: read plane latches */
+ for (i=0; i<4; i++)
+ SET_FARVAR(seg, info->plane_latch[i], 0);
+}
+
+void
+vgahw_restore_state(u16 seg, struct saveVideoHardware *info)
+{
+ // Reset Attribute Ctl flip-flop
+ inb(VGAREG_ACTL_RESET);
+
+ u16 crtc_addr = GET_FARVAR(seg, info->crtc_addr);
+
+ u16 i;
+ for (i=0; i<4; i++) {
+ outb(i+1, VGAREG_SEQU_ADDRESS);
+ outb(GET_FARVAR(seg, info->sequ_regs[i]), VGAREG_SEQU_DATA);
+ }
+ outb(0, VGAREG_SEQU_ADDRESS);
+ outb(GET_FARVAR(seg, info->sequ0), VGAREG_SEQU_DATA);
+
+ // Disable CRTC write protection
+ outw(0x0011, crtc_addr);
+ // Set CRTC regs
+ for (i=0; i<25; i++)
+ if (i != 0x11) {
+ outb(i, crtc_addr);
+ outb(GET_FARVAR(seg, info->crtc_regs[i]), crtc_addr + 1);
+ }
+ // 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(seg, info->crtc_regs[0x11]), crtc_addr + 1);
+
+ // Set Attribute Ctl
+ u16 ar_index = GET_FARVAR(seg, info->actl_index);
+ inb(VGAREG_ACTL_RESET);
+ for (i=0; i<20; i++) {
+ outb(i | (ar_index & 0x20), VGAREG_ACTL_ADDRESS);
+ outb(GET_FARVAR(seg, info->actl_regs[i]), VGAREG_ACTL_WRITE_DATA);
+ }
+ outb(ar_index, VGAREG_ACTL_ADDRESS);
+ inb(VGAREG_ACTL_RESET);
+
+ for (i=0; i<9; i++) {
+ outb(i, VGAREG_GRDC_ADDRESS);
+ outb(GET_FARVAR(seg, info->grdc_regs[i]), VGAREG_GRDC_DATA);
+ }
+
+ outb(GET_FARVAR(seg, info->sequ_index), VGAREG_SEQU_ADDRESS);
+ outb(GET_FARVAR(seg, info->crtc_index), crtc_addr);
+ outb(GET_FARVAR(seg, info->grdc_index), VGAREG_GRDC_ADDRESS);
+ outb(GET_FARVAR(seg, info->feature), crtc_addr - 0x4 + 0xa);
+}
+
+void
+vgahw_set_mode(struct vgamode_s *vmode_g)
+{
+ // Reset Attribute Ctl flip-flop
+ inb(VGAREG_ACTL_RESET);
+
+ // Set Attribute Ctl
+ u8 *regs = GET_GLOBAL(vmode_g->actl_regs);
+ u16 i;
+ for (i = 0; i <= 0x13; i++) {
+ outb(i, VGAREG_ACTL_ADDRESS);
+ outb(GET_GLOBAL(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);
+ regs = GET_GLOBAL(vmode_g->sequ_regs);
+ for (i = 1; i <= 4; i++) {
+ outb(i, VGAREG_SEQU_ADDRESS);
+ outb(GET_GLOBAL(regs[i - 1]), VGAREG_SEQU_DATA);
+ }
+
+ // Set Grafx Ctl
+ regs = GET_GLOBAL(vmode_g->grdc_regs);
+ for (i = 0; i <= 8; i++) {
+ outb(i, VGAREG_GRDC_ADDRESS);
+ outb(GET_GLOBAL(regs[i]), VGAREG_GRDC_DATA);
+ }
+
+ // Set CRTC address VGA or MDA
+ u8 miscreg = GET_GLOBAL(vmode_g->miscreg);
+ u16 crtc_addr = VGAREG_VGA_CRTC_ADDRESS;
+ if (!(miscreg & 1))
+ crtc_addr = VGAREG_MDA_CRTC_ADDRESS;
+
+ // Disable CRTC write protection
+ outw(0x0011, crtc_addr);
+ // Set CRTC regs
+ regs = GET_GLOBAL(vmode_g->crtc_regs);
+ for (i = 0; i <= 0x18; i++) {
+ outb(i, crtc_addr);
+ outb(GET_GLOBAL(regs[i]), crtc_addr + 1);
+ }
+
+ // Set the misc register
+ outb(miscreg, VGAREG_WRITE_MISC_OUTPUT);
+
+ // Enable video
+ outb(0x20, VGAREG_ACTL_ADDRESS);
+ inb(VGAREG_ACTL_RESET);
+}
+
+
/****************************************************************
* Misc
****************************************************************/
void
-biosfn_enable_video_addressing(struct bregs *regs)
+vgahw_enable_video_addressing(u8 disable)
{
- u8 v = ((regs->al << 1) & 0x02) ^ 0x02;
+ u8 v = (disable & 1) ? 0x00 : 0x02;
u8 v2 = inb(VGAREG_READ_MISC_OUTPUT) & ~0x02;
outb(v | v2, VGAREG_WRITE_MISC_OUTPUT);
- regs->ax = 0x1212;
}
void
-init_vga_card()
+vgahw_init(void)
{
// switch to color mode and enable CPU access 480 lines
outb(0xc3, VGAREG_WRITE_MISC_OUTPUT);
projects / seabios.git / blobdiff