vgabios: Add wrapper functions for accessing standard VGA registers.

[seabios.git] / vgasrc / stdvga.h

diff --git a/vgasrc/stdvga.h b/vgasrc/stdvga.h
index 0d5f59b5d41158e79704fc2d9effb3ed1445a9ca..abda6069bfe3f6e76bf5541d490101abb437f40d 100644 (file)
--- a/vgasrc/stdvga.h
+++ b/vgasrc/stdvga.h
@@ -2,6 +2,7 @@
 #define __STDVGA_H
 
 #include "types.h" // u8
+#include "vgabios.h" // struct vgamode_s
 
 // VGA registers
 #define VGAREG_ACTL_ADDRESS            0x3c0
@@ -44,33 +45,9 @@
 #define SEG_CTEXT 0xB800
 #define SEG_MTEXT 0xB000
 
-/*
- * Tables of default values for each mode
- */
-#define TEXT       0x80
-
-#define CTEXT      (0x00 | TEXT)
-#define MTEXT      (0x01 | TEXT)
-#define CGA        0x02
-#define PLANAR1    0x03
-#define PLANAR4    0x04
-#define LINEAR8    0x05
-
-// for SVGA
-#define LINEAR15   0x10
-#define LINEAR16   0x11
-#define LINEAR24   0x12
-#define LINEAR32   0x13
-
-struct vgamode_s {
-    u8 svgamode;
-    u8 memmodel;    /* CTEXT,MTEXT,CGA,PL1,PL2,PL4,P8,P15,P16,P24,P32 */
-    u8 twidth;
-    u8 theight;
-    u8 cheight;
-    u8 pixbits;
-    u16 sstart;
-    u16 slength;
+struct stdvga_mode_s {
+    u16 mode;
+    struct vgamode_s info;
 
     u8 pelmask;
     u8 *dac;
@@ -105,30 +82,49 @@ struct saveDACcolors {
     u8 color_select;
 };
 
-void stdvga_screen_disable(void);
-void stdvga_screen_enable(void);
+// 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_sequ_write(u8 index, u8 value);
-void stdvga_grdc_write(u8 index, u8 value);
+void stdvga_perform_gray_scale_summing(u16 start, u16 count);
 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);
+u16 stdvga_get_crtc(void);
 void stdvga_set_cursor_shape(u8 start, u8 end);
 void stdvga_set_active_page(u16 address);
 void stdvga_set_cursor_pos(u16 address);
@@ -136,8 +132,9 @@ void stdvga_set_scan_lines(u8 lines);
 u16 stdvga_get_vde(void);
 void stdvga_save_state(u16 seg, struct saveVideoHardware *info);
 void stdvga_restore_state(u16 seg, struct saveVideoHardware *info);
-void stdvga_set_mode(struct vgamode_s *vmode_g);
+int stdvga_set_mode(int mode, int flags);
 void stdvga_enable_video_addressing(u8 disable);
-void stdvga_init(void);
+void stdvga_list_modes(u16 seg, u16 *dest, u16 *last);
+int stdvga_init(void);
 
 #endif // stdvga.h