From: Kevin O'Connor Date: Sun, 15 Jan 2012 00:02:43 +0000 (-0500) Subject: vgabios: Add wrapper functions for accessing standard VGA registers. X-Git-Url: http://wien.tomnetworks.com/gitweb/?p=seabios.git;a=commitdiff_plain;h=3471fdbe63f9e982ae979094b6b3e7562dae1021 vgabios: Add wrapper functions for accessing standard VGA registers. Signed-off-by: Kevin O'Connor --- diff --git a/Makefile b/Makefile index c97ed8f..31eb2f9 100644 --- a/Makefile +++ b/Makefile @@ -169,9 +169,10 @@ $(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py ################ VGA build rules # VGA src files -SRCVGA=src/output.c src/util.c src/pci.c vgasrc/vgabios.c vgasrc/vgafb.c \ - vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/vbe.c \ - vgasrc/stdvga.c vgasrc/clext.c vgasrc/bochsvga.c vgasrc/geodevga.c +SRCVGA=src/output.c src/util.c src/pci.c \ + vgasrc/vgabios.c vgasrc/vgafb.c vgasrc/vgafonts.c vgasrc/vbe.c \ + vgasrc/vgatables.c vgasrc/stdvga.c vgasrc/stdvgaio.c \ + vgasrc/clext.c vgasrc/bochsvga.c vgasrc/geodevga.c CFLAGS16VGA = $(CFLAGS16INC) -g -Isrc diff --git a/vgasrc/clext.c b/vgasrc/clext.c index 413add5..d6fa7a2 100644 --- a/vgasrc/clext.c +++ b/vgasrc/clext.c @@ -374,12 +374,12 @@ cirrus_switch_mode(struct cirrus_mode_s *table) outb(0xff, VGAREG_PEL_MASK); u8 memmodel = GET_GLOBAL(table->info.memmodel); - u8 v = stdvga_get_single_palette_reg(0x10) & 0xfe; + u8 on = 0; if (memmodel == MM_PLANAR) - v |= 0x41; + on = 0x41; else if (memmodel != MM_TEXT) - v |= 0x01; - stdvga_set_single_palette_reg(0x10, v); + on = 0x01; + stdvga_attr_mask(0x10, 0x01, on); } static u8 diff --git a/vgasrc/stdvga.c b/vgasrc/stdvga.c index 6998cd0..0345a81 100644 --- a/vgasrc/stdvga.c +++ b/vgasrc/stdvga.c @@ -1,4 +1,4 @@ -// VGA io port access +// Standard VGA driver code // // Copyright (C) 2009 Kevin O'Connor // Copyright (C) 2001-2008 the LGPL VGABios developers Team @@ -94,26 +94,6 @@ stdvga_set_palette(u8 palid) outb(0x20, VGAREG_ACTL_ADDRESS); } -void -stdvga_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 -stdvga_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; -} - void stdvga_set_all_palette_reg(u16 seg, u8 *data_far) { @@ -205,48 +185,6 @@ stdvga_read_video_dac_state(u8 *pmode, u8 *curpage) * DAC control ****************************************************************/ -void -stdvga_set_dac_regs(u16 seg, u8 *data_far, u8 start, int count) -{ - outb(start, VGAREG_DAC_WRITE_ADDRESS); - while (count) { - outb(GET_FARVAR(seg, *data_far), VGAREG_DAC_DATA); - data_far++; - outb(GET_FARVAR(seg, *data_far), VGAREG_DAC_DATA); - data_far++; - outb(GET_FARVAR(seg, *data_far), VGAREG_DAC_DATA); - data_far++; - count--; - } -} - -void -stdvga_get_dac_regs(u16 seg, u8 *data_far, u8 start, int count) -{ - outb(start, VGAREG_DAC_READ_ADDRESS); - while (count) { - SET_FARVAR(seg, *data_far, inb(VGAREG_DAC_DATA)); - data_far++; - SET_FARVAR(seg, *data_far, inb(VGAREG_DAC_DATA)); - data_far++; - SET_FARVAR(seg, *data_far, inb(VGAREG_DAC_DATA)); - data_far++; - count--; - } -} - -void -stdvga_set_pel_mask(u8 val) -{ - outb(val, VGAREG_PEL_MASK); -} - -u8 -stdvga_get_pel_mask(void) -{ - return inb(VGAREG_PEL_MASK); -} - void stdvga_save_dac_state(u16 seg, struct saveDACcolors *info) { @@ -254,7 +192,7 @@ stdvga_save_dac_state(u16 seg, struct saveDACcolors *info) 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)); - stdvga_get_dac_regs(seg, info->dac, 0, 256); + stdvga_dac_read(seg, info->dac, 0, 256); SET_FARVAR(seg, info->color_select, 0); } @@ -262,7 +200,7 @@ void stdvga_restore_dac_state(u16 seg, struct saveDACcolors *info) { outb(GET_FARVAR(seg, info->pelmask), VGAREG_PEL_MASK); - stdvga_set_dac_regs(seg, info->dac, 0, 256); + stdvga_dac_write(seg, info->dac, 0, 256); outb(GET_FARVAR(seg, info->peladdr), VGAREG_DAC_WRITE_ADDRESS); } @@ -273,14 +211,14 @@ stdvga_perform_gray_scale_summing(u16 start, u16 count) int i; for (i = start; i < start+count; i++) { u8 rgb[3]; - stdvga_get_dac_regs(GET_SEG(SS), rgb, i, 1); + stdvga_dac_read(GET_SEG(SS), rgb, i, 1); // intensity = ( 0.3 * Red ) + ( 0.59 * Green ) + ( 0.11 * Blue ) u16 intensity = ((77 * rgb[0] + 151 * rgb[1] + 28 * rgb[2]) + 0x80) >> 8; if (intensity > 0x3f) intensity = 0x3f; - stdvga_set_dac_regs(GET_SEG(SS), rgb, i, 1); + stdvga_dac_write(GET_SEG(SS), rgb, i, 1); } stdvga_screen_enable(); } @@ -290,18 +228,6 @@ stdvga_perform_gray_scale_summing(u16 start, u16 count) * Memory control ****************************************************************/ -void -stdvga_sequ_write(u8 index, u8 value) -{ - outw((value<<8) | index, VGAREG_SEQU_ADDRESS); -} - -void -stdvga_grdc_write(u8 index, u8 value) -{ - outw((value<<8) | index, VGAREG_GRDC_ADDRESS); -} - void stdvga_set_text_block_specifier(u8 spec) { @@ -360,7 +286,7 @@ stdvga_load_font(u16 seg, void *src_far, u16 count u16 stdvga_get_crtc(void) { - if (inb(VGAREG_READ_MISC_OUTPUT) & 1) + if (stdvga_misc_read() & 1) return VGAREG_VGA_CRTC_ADDRESS; return VGAREG_MDA_CRTC_ADDRESS; } @@ -552,18 +478,18 @@ stdvga_set_mode(int mode, int flags) // if palette loading (bit 3 of modeset ctl = 0) if (!(flags & MF_NOPALETTE)) { // Set the PEL mask - stdvga_set_pel_mask(GET_GLOBAL(stdmode_g->pelmask)); + stdvga_pelmask_write(GET_GLOBAL(stdmode_g->pelmask)); // From which palette u8 *palette_g = GET_GLOBAL(stdmode_g->dac); u16 palsize = GET_GLOBAL(stdmode_g->dacsize) / 3; // Always 256*3 values - stdvga_set_dac_regs(get_global_seg(), palette_g, 0, palsize); + stdvga_dac_write(get_global_seg(), palette_g, 0, palsize); u16 i; for (i = palsize; i < 0x0100; i++) { static u8 rgb[3] VAR16; - stdvga_set_dac_regs(get_global_seg(), rgb, i, 1); + stdvga_dac_write(get_global_seg(), rgb, i, 1); } if (flags & MF_GRAYSUM) diff --git a/vgasrc/stdvga.h b/vgasrc/stdvga.h index 033a711..abda606 100644 --- a/vgasrc/stdvga.h +++ b/vgasrc/stdvga.h @@ -85,27 +85,42 @@ struct saveDACcolors { // vgatables.c struct vgamode_s *stdvga_find_mode(int mode); +// stdvgaio.c +u8 stdvga_pelmask_read(void); +void stdvga_pelmask_write(u8 val); +u8 stdvga_misc_read(void); +void stdvga_misc_write(u8 value); +void stdvga_misc_mask(u8 off, u8 on); +u8 stdvga_sequ_read(u8 index); +void stdvga_sequ_write(u8 index, u8 value); +void stdvga_sequ_mask(u8 index, u8 off, u8 on); +u8 stdvga_grdc_read(u8 index); +void stdvga_grdc_write(u8 index, u8 value); +void stdvga_grdc_mask(u8 index, u8 off, u8 on); +u8 stdvga_crtc_read(u16 crtc_addr, u8 index); +void stdvga_crtc_write(u16 crtc_addr, u8 index, u8 value); +void stdvga_crtc_mask(u16 crtc_addr, u8 index, u8 off, u8 on); +u8 stdvga_attr_read(u8 index); +void stdvga_attr_write(u8 index, u8 value); +void stdvga_attr_mask(u8 index, u8 off, u8 on); +u8 stdvga_attrindex_read(void); +void stdvga_attrindex_write(u8 value); +void stdvga_dac_read(u16 seg, u8 *data_far, u8 start, int count); +void stdvga_dac_write(u16 seg, u8 *data_far, u8 start, int count); + // stdvga.c void stdvga_set_border_color(u8 color); void stdvga_set_overscan_border_color(u8 color); u8 stdvga_get_overscan_border_color(void); void stdvga_set_palette(u8 palid); -void stdvga_set_single_palette_reg(u8 reg, u8 val); -u8 stdvga_get_single_palette_reg(u8 reg); void stdvga_set_all_palette_reg(u16 seg, u8 *data_far); void stdvga_get_all_palette_reg(u16 seg, u8 *data_far); void stdvga_toggle_intensity(u8 flag); void stdvga_select_video_dac_color_page(u8 flag, u8 data); void stdvga_read_video_dac_state(u8 *pmode, u8 *curpage); -void stdvga_set_dac_regs(u16 seg, u8 *data_far, u8 start, int count); -void stdvga_get_dac_regs(u16 seg, u8 *data_far, u8 start, int count); -void stdvga_set_pel_mask(u8 val); -u8 stdvga_get_pel_mask(void); void stdvga_save_dac_state(u16 seg, struct saveDACcolors *info); void stdvga_restore_dac_state(u16 seg, struct saveDACcolors *info); void stdvga_perform_gray_scale_summing(u16 start, u16 count); -void stdvga_sequ_write(u8 index, u8 value); -void stdvga_grdc_write(u8 index, u8 value); void stdvga_set_text_block_specifier(u8 spec); void stdvga_load_font(u16 seg, void *src_far, u16 count , u16 start, u8 destflags, u8 fontsize); diff --git a/vgasrc/stdvgaio.c b/vgasrc/stdvgaio.c new file mode 100644 index 0000000..5591ad2 --- /dev/null +++ b/vgasrc/stdvgaio.c @@ -0,0 +1,184 @@ +// Standard VGA IO port access +// +// Copyright (C) 2012 Kevin O'Connor +// +// This file may be distributed under the terms of the GNU LGPLv3 license. + +#include "stdvga.h" // stdvga_pelmask_read +#include "ioport.h" // inb + +u8 +stdvga_pelmask_read(void) +{ + return inb(VGAREG_PEL_MASK); +} + +void +stdvga_pelmask_write(u8 value) +{ + outb(value, VGAREG_PEL_MASK); +} + + +u8 +stdvga_misc_read(void) +{ + return inb(VGAREG_READ_MISC_OUTPUT); +} + +void +stdvga_misc_write(u8 value) +{ + outb(value, VGAREG_WRITE_MISC_OUTPUT); +} + +void +stdvga_misc_mask(u8 off, u8 on) +{ + stdvga_misc_write((stdvga_misc_read() & ~off) | on); +} + + +u8 +stdvga_sequ_read(u8 index) +{ + outb(index, VGAREG_SEQU_ADDRESS); + return inb(VGAREG_SEQU_DATA); +} + +void +stdvga_sequ_write(u8 index, u8 value) +{ + outw((value<<8) | index, VGAREG_SEQU_ADDRESS); +} + +void +stdvga_sequ_mask(u8 index, u8 off, u8 on) +{ + outb(index, VGAREG_SEQU_ADDRESS); + u8 v = inb(VGAREG_SEQU_DATA); + outb((v & ~off) | on, VGAREG_SEQU_DATA); +} + + +u8 +stdvga_grdc_read(u8 index) +{ + outb(index, VGAREG_GRDC_ADDRESS); + return inb(VGAREG_GRDC_DATA); +} + +void +stdvga_grdc_write(u8 index, u8 value) +{ + outw((value<<8) | index, VGAREG_GRDC_ADDRESS); +} + +void +stdvga_grdc_mask(u8 index, u8 off, u8 on) +{ + outb(index, VGAREG_GRDC_ADDRESS); + u8 v = inb(VGAREG_GRDC_DATA); + outb((v & ~off) | on, VGAREG_GRDC_DATA); +} + + +u8 +stdvga_crtc_read(u16 crtc_addr, u8 index) +{ + outb(index, crtc_addr); + return inb(crtc_addr + 1); +} + +void +stdvga_crtc_write(u16 crtc_addr, u8 index, u8 value) +{ + outw((value<<8) | index, crtc_addr); +} + +void +stdvga_crtc_mask(u16 crtc_addr, u8 index, u8 off, u8 on) +{ + outb(index, crtc_addr); + u8 v = inb(crtc_addr + 1); + outb((v & ~off) | on, crtc_addr + 1); +} + + +u8 +stdvga_attr_read(u8 index) +{ + inb(VGAREG_ACTL_RESET); + u8 orig = inb(VGAREG_ACTL_ADDRESS); + outb(index, VGAREG_ACTL_ADDRESS); + u8 v = inb(VGAREG_ACTL_READ_DATA); + inb(VGAREG_ACTL_RESET); + outb(orig, VGAREG_ACTL_ADDRESS); + return v; +} + +void +stdvga_attr_write(u8 index, u8 value) +{ + inb(VGAREG_ACTL_RESET); + u8 orig = inb(VGAREG_ACTL_ADDRESS); + outb(index, VGAREG_ACTL_ADDRESS); + outb(value, VGAREG_ACTL_WRITE_DATA); + outb(orig, VGAREG_ACTL_ADDRESS); +} + +void +stdvga_attr_mask(u8 index, u8 off, u8 on) +{ + inb(VGAREG_ACTL_RESET); + u8 orig = inb(VGAREG_ACTL_ADDRESS); + outb(index, VGAREG_ACTL_ADDRESS); + u8 v = inb(VGAREG_ACTL_READ_DATA); + outb((v & ~off) | on, VGAREG_ACTL_WRITE_DATA); + outb(orig, VGAREG_ACTL_ADDRESS); +} + +u8 +stdvga_attrindex_read(void) +{ + inb(VGAREG_ACTL_RESET); + return inb(VGAREG_ACTL_ADDRESS); +} + +void +stdvga_attrindex_write(u8 value) +{ + inb(VGAREG_ACTL_RESET); + outb(value, VGAREG_ACTL_ADDRESS); +} + + +void +stdvga_dac_read(u16 seg, u8 *data_far, u8 start, int count) +{ + outb(start, VGAREG_DAC_READ_ADDRESS); + while (count) { + SET_FARVAR(seg, *data_far, inb(VGAREG_DAC_DATA)); + data_far++; + SET_FARVAR(seg, *data_far, inb(VGAREG_DAC_DATA)); + data_far++; + SET_FARVAR(seg, *data_far, inb(VGAREG_DAC_DATA)); + data_far++; + count--; + } +} + +void +stdvga_dac_write(u16 seg, u8 *data_far, u8 start, int count) +{ + outb(start, VGAREG_DAC_WRITE_ADDRESS); + while (count) { + outb(GET_FARVAR(seg, *data_far), VGAREG_DAC_DATA); + data_far++; + outb(GET_FARVAR(seg, *data_far), VGAREG_DAC_DATA); + data_far++; + outb(GET_FARVAR(seg, *data_far), VGAREG_DAC_DATA); + data_far++; + count--; + } +} diff --git a/vgasrc/vgabios.c b/vgasrc/vgabios.c index 8ab5baa..84b112c 100644 --- a/vgasrc/vgabios.c +++ b/vgasrc/vgabios.c @@ -575,7 +575,7 @@ handle_101000(struct bregs *regs) { if (regs->bl > 0x14) return; - stdvga_set_single_palette_reg(regs->bl, regs->bh); + stdvga_attr_write(regs->bl, regs->bh); } static void @@ -601,7 +601,7 @@ handle_101007(struct bregs *regs) { if (regs->bl > 0x14) return; - regs->bh = stdvga_get_single_palette_reg(regs->bl); + regs->bh = stdvga_attr_read(regs->bl); } static void @@ -620,13 +620,13 @@ static void noinline handle_101010(struct bregs *regs) { u8 rgb[3] = {regs->dh, regs->ch, regs->cl}; - stdvga_set_dac_regs(GET_SEG(SS), rgb, regs->bx, 1); + stdvga_dac_write(GET_SEG(SS), rgb, regs->bx, 1); } static void handle_101012(struct bregs *regs) { - stdvga_set_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx); + stdvga_dac_write(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx); } static void @@ -639,7 +639,7 @@ static void noinline handle_101015(struct bregs *regs) { u8 rgb[3]; - stdvga_get_dac_regs(GET_SEG(SS), rgb, regs->bx, 1); + stdvga_dac_read(GET_SEG(SS), rgb, regs->bx, 1); regs->dh = rgb[0]; regs->ch = rgb[1]; regs->cl = rgb[2]; @@ -648,19 +648,19 @@ handle_101015(struct bregs *regs) static void handle_101017(struct bregs *regs) { - stdvga_get_dac_regs(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx); + stdvga_dac_read(regs->es, (u8*)(regs->dx + 0), regs->bx, regs->cx); } static void handle_101018(struct bregs *regs) { - stdvga_set_pel_mask(regs->bl); + stdvga_pelmask_write(regs->bl); } static void handle_101019(struct bregs *regs) { - regs->bl = stdvga_get_pel_mask(); + regs->bl = stdvga_pelmask_read(); } static void