X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=vgasrc%2Fvgafb.c;h=f0bd71ef563dfadfee6db5bf3644eefbb8c31981;hb=4a73f933968e5cf6f2a6ce1ad87448dd6b136e48;hp=19ab1dfadc8570df5cc3c5c9f1a6f2cf9dc9b664;hpb=2bec7d6162135a4b061aaf577b3b34f70a38a3b9;p=seabios.git

diff --git a/vgasrc/vgafb.c b/vgasrc/vgafb.c
index 19ab1df..f0bd71e 100644
--- a/vgasrc/vgafb.c
+++ b/vgasrc/vgafb.c
@@ -7,8 +7,7 @@
 
 #include "biosvar.h" // GET_BDA
 #include "util.h" // memset_far
-#include "vgabios.h" // find_vga_entry
-#include "stdvga.h" // stdvga_grdc_write
+#include "stdvga.h" // stdvga_planar4_plane
 
 
 /****************************************************************
@@ -41,138 +40,155 @@ static void
 scroll_pl4(struct vgamode_s *vmode_g, int nblines, int attr
            , struct cursorpos ul, struct cursorpos lr)
 {
-    u8 cheight = GET_GLOBAL(vmode_g->cheight);
-    int stride = GET_BDA(video_cols);
+    int cheight = GET_GLOBAL(vmode_g->cheight);
+    int cwidth = 1;
+    int stride = GET_BDA(video_cols) * cwidth;
     void *src_far, *dest_far;
     if (nblines >= 0) {
-        dest_far = (void*)(ul.y * cheight * stride + ul.x);
+        dest_far = (void*)(ul.y * cheight * stride + ul.x * cwidth);
         src_far = dest_far + nblines * cheight * stride;
     } else {
         // Scroll down
         nblines = -nblines;
-        dest_far = (void*)(lr.y * cheight * stride + ul.x);
+        dest_far = (void*)(lr.y * cheight * stride + ul.x * cwidth);
         src_far = dest_far - nblines * cheight * stride;
         stride = -stride;
     }
+    if (attr < 0)
+        attr = 0;
     int cols = lr.x - ul.x + 1;
     int rows = lr.y - ul.y + 1;
-    if (nblines < rows) {
-        stdvga_grdc_write(0x05, 0x01);
-        dest_far = memcpy_stride(SEG_GRAPH, dest_far, src_far, cols, stride
-                                 , (rows - nblines) * cheight);
+    int i;
+    for (i=0; i<4; i++) {
+        stdvga_planar4_plane(i);
+        void *dest = dest_far;
+        if (nblines < rows)
+            dest = memcpy_stride(SEG_GRAPH, dest, src_far, cols * cwidth
+                                 , stride, (rows - nblines) * cheight);
+        u8 pixels = (attr & (1<<i)) ? 0xff : 0x00;
+        memset_stride(SEG_GRAPH, dest, pixels, cols * cwidth
+                      , stride, nblines * cheight);
     }
-    if (attr < 0)
-        attr = 0;
-    stdvga_grdc_write(0x05, 0x02);
-    memset_stride(SEG_GRAPH, dest_far, attr, cols, stride, nblines * cheight);
-    stdvga_grdc_write(0x05, 0x00);
+    stdvga_planar4_plane(-1);
 }
 
 static void
 scroll_cga(struct vgamode_s *vmode_g, int nblines, int attr
             , struct cursorpos ul, struct cursorpos lr)
 {
-    u8 cheight = GET_GLOBAL(vmode_g->cheight);
-    u8 bpp = GET_GLOBAL(vmode_g->pixbits);
-    int stride = GET_BDA(video_cols) * bpp;
+    int cheight = GET_GLOBAL(vmode_g->cheight) / 2;
+    int cwidth = GET_GLOBAL(vmode_g->depth);
+    int stride = GET_BDA(video_cols) * cwidth;
     void *src_far, *dest_far;
     if (nblines >= 0) {
-        dest_far = (void*)(ul.y * cheight * stride + ul.x * bpp);
+        dest_far = (void*)(ul.y * cheight * stride + ul.x * cwidth);
         src_far = dest_far + nblines * cheight * stride;
     } else {
         // Scroll down
         nblines = -nblines;
-        dest_far = (void*)(lr.y * cheight * stride + ul.x * bpp);
+        dest_far = (void*)(lr.y * cheight * stride + ul.x * cwidth);
         src_far = dest_far - nblines * cheight * stride;
         stride = -stride;
     }
-    int cols = (lr.x - ul.x + 1) * bpp;
+    if (attr < 0)
+        attr = 0;
+    int cols = lr.x - ul.x + 1;
     int rows = lr.y - ul.y + 1;
     if (nblines < rows) {
-        memcpy_stride(SEG_CTEXT, dest_far + 0x2000, src_far + 0x2000, cols
-                      , stride, (rows - nblines) * cheight / 2);
-        dest_far = memcpy_stride(SEG_CTEXT, dest_far, src_far, cols
-                                 , stride, (rows - nblines) * cheight / 2);
+        memcpy_stride(SEG_CTEXT, dest_far+0x2000, src_far+0x2000, cols * cwidth
+                      , stride, (rows - nblines) * cheight);
+        dest_far = memcpy_stride(SEG_CTEXT, dest_far, src_far, cols * cwidth
+                                 , stride, (rows - nblines) * cheight);
+    }
+    memset_stride(SEG_CTEXT, dest_far + 0x2000, attr, cols * cwidth
+                  , stride, nblines * cheight);
+    memset_stride(SEG_CTEXT, dest_far, attr, cols * cwidth
+                  , stride, nblines * cheight);
+}
+
+static void
+scroll_lin(struct vgamode_s *vmode_g, int nblines, int attr
+           , struct cursorpos ul, struct cursorpos lr)
+{
+    int cheight = 8;
+    int cwidth = 8;
+    int stride = GET_BDA(video_cols) * cwidth;
+    void *src_far, *dest_far;
+    if (nblines >= 0) {
+        dest_far = (void*)(ul.y * cheight * stride + ul.x * cwidth);
+        src_far = dest_far + nblines * cheight * stride;
+    } else {
+        // Scroll down
+        nblines = -nblines;
+        dest_far = (void*)(lr.y * cheight * stride + ul.x * cwidth);
+        src_far = dest_far - nblines * cheight * stride;
+        stride = -stride;
     }
     if (attr < 0)
         attr = 0;
-    memset_stride(SEG_CTEXT, dest_far + 0x2000, attr, cols
-                  , stride, nblines * cheight / 2);
-    memset_stride(SEG_CTEXT, dest_far, attr, cols
-                  , stride, nblines * cheight / 2);
+    int cols = lr.x - ul.x + 1;
+    int rows = lr.y - ul.y + 1;
+    if (nblines < rows)
+        dest_far = memcpy_stride(SEG_GRAPH, dest_far, src_far, cols * cwidth
+                                 , stride, (rows - nblines) * cheight);
+    memset_stride(SEG_GRAPH, dest_far, attr, cols * cwidth
+                  , stride, nblines * cheight);
 }
 
 static void
 scroll_text(struct vgamode_s *vmode_g, int nblines, int attr
             , struct cursorpos ul, struct cursorpos lr)
 {
-    u16 nbrows = GET_BDA(video_rows) + 1;
-    u16 nbcols = GET_BDA(video_cols);
-    void *src_far, *dest_far = (void*)SCREEN_MEM_START(nbcols, nbrows, ul.page);
-    int stride = nbcols * 2;
+    int cheight = 1;
+    int cwidth = 2;
+    int stride = GET_BDA(video_cols) * cwidth;
+    void *src_far, *dest_far = (void*)(GET_BDA(video_pagesize) * ul.page);
     if (nblines >= 0) {
-        dest_far += ul.y * stride + ul.x * 2;
-        src_far = dest_far + nblines * stride;
+        dest_far += ul.y * cheight * stride + ul.x * cwidth;
+        src_far = dest_far + nblines * cheight * stride;
     } else {
         // Scroll down
         nblines = -nblines;
-        dest_far += lr.y * stride + ul.x * 2;
-        src_far = dest_far - nblines * stride;
+        dest_far += lr.y * cheight * stride + ul.x * cwidth;
+        src_far = dest_far - nblines * cheight * stride;
         stride = -stride;
     }
-    int cols = (lr.x - ul.x + 1) * 2;
-    int rows = lr.y - ul.y + 1;
-    u16 seg = GET_GLOBAL(vmode_g->sstart);
-    if (nblines < rows)
-        dest_far = memcpy_stride(seg, dest_far, src_far, cols, stride
-                                 , (rows - nblines));
     if (attr < 0)
         attr = 0x07;
     attr = (attr << 8) | ' ';
-    memset16_stride(seg, dest_far, attr, cols, stride, nblines);
+    int cols = lr.x - ul.x + 1;
+    int rows = lr.y - ul.y + 1;
+    u16 seg = GET_GLOBAL(vmode_g->sstart);
+    if (nblines < rows)
+        dest_far = memcpy_stride(seg, dest_far, src_far, cols * cwidth
+                                 , stride, (rows - nblines) * cheight);
+    memset16_stride(seg, dest_far, attr, cols * cwidth
+                    , stride, nblines * cheight);
 }
 
 void
 vgafb_scroll(int nblines, int attr, struct cursorpos ul, struct cursorpos lr)
 {
     // Get the mode
-    struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+    struct vgamode_s *vmode_g = get_current_mode();
     if (!vmode_g)
         return;
 
     // FIXME gfx mode not complete
     switch (GET_GLOBAL(vmode_g->memmodel)) {
-    case CTEXT:
-    case MTEXT:
+    case MM_TEXT:
         scroll_text(vmode_g, nblines, attr, ul, lr);
         break;
-    case PLANAR4:
-    case PLANAR1:
+    case MM_PLANAR:
         scroll_pl4(vmode_g, nblines, attr, ul, lr);
         break;
-    case CGA:
+    case MM_CGA:
         scroll_cga(vmode_g, nblines, attr, ul, lr);
         break;
-    default:
-        dprintf(1, "Scroll in graphics mode\n");
-    }
-}
-
-void
-clear_screen(struct vgamode_s *vmode_g)
-{
-    switch (GET_GLOBAL(vmode_g->memmodel)) {
-    case CTEXT:
-    case MTEXT:
-        memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0720, 32*1024);
-        break;
-    case CGA:
-        memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0000, 32*1024);
+    case MM_DIRECT:
+    case MM_PACKED:
+        scroll_lin(vmode_g, nblines, attr, ul, lr);
         break;
-    default:
-        // XXX - old code gets/sets/restores sequ register 2 to 0xf -
-        // but it should always be 0xf anyway.
-        memset16_far(GET_GLOBAL(vmode_g->sstart), 0, 0x0000, 64*1024);
     }
 }
 
@@ -203,29 +219,20 @@ write_gfx_char_pl4(struct vgamode_s *vmode_g
     }
     u16 addr = cp.x + cp.y * cheight * nbcols;
     u16 src = ca.car * cheight;
-    stdvga_sequ_write(0x02, 0x0f);
-    stdvga_grdc_write(0x05, 0x02);
-    if (ca.attr & 0x80)
-        stdvga_grdc_write(0x03, 0x18);
-    else
-        stdvga_grdc_write(0x03, 0x00);
-    u8 i;
-    for (i = 0; i < cheight; i++) {
-        u8 *dest_far = (void*)(addr + i * nbcols);
-        u8 j;
-        for (j = 0; j < 8; j++) {
-            u8 mask = 0x80 >> j;
-            stdvga_grdc_write(0x08, mask);
-            GET_FARVAR(SEG_GRAPH, *dest_far);
-            if (GET_GLOBAL(fdata_g[src + i]) & mask)
-                SET_FARVAR(SEG_GRAPH, *dest_far, ca.attr & 0x0f);
-            else
-                SET_FARVAR(SEG_GRAPH, *dest_far, 0x00);
+    int i;
+    for (i=0; i<4; i++) {
+        stdvga_planar4_plane(i);
+        u8 colors = ((ca.attr & (1<<i)) ? 0xff : 0x00);
+        int j;
+        for (j = 0; j < cheight; j++) {
+            u8 *dest_far = (void*)(addr + j * nbcols);
+            u8 pixels = colors & GET_GLOBAL(fdata_g[src + j]);
+            if (ca.attr & 0x80)
+                pixels ^= GET_FARVAR(SEG_GRAPH, *dest_far);
+            SET_FARVAR(SEG_GRAPH, *dest_far, pixels);
         }
     }
-    stdvga_grdc_write(0x08, 0xff);
-    stdvga_grdc_write(0x05, 0x00);
-    stdvga_grdc_write(0x03, 0x00);
+    stdvga_planar4_plane(-1);
 }
 
 static void
@@ -237,7 +244,7 @@ write_gfx_char_cga(struct vgamode_s *vmode_g
         return;
 
     u8 *fdata_g = vgafont8;
-    u8 bpp = GET_GLOBAL(vmode_g->pixbits);
+    u8 bpp = GET_GLOBAL(vmode_g->depth);
     u16 addr = (cp.x * bpp) + cp.y * 320;
     u16 src = ca.car * 8;
     u8 i;
@@ -314,12 +321,9 @@ static void
 write_text_char(struct vgamode_s *vmode_g
                 , struct cursorpos cp, struct carattr ca)
 {
-    // Get the dimensions
-    u16 nbrows = GET_BDA(video_rows) + 1;
-    u16 nbcols = GET_BDA(video_cols);
-
     // Compute the address
-    void *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, cp.page)
+    u16 nbcols = GET_BDA(video_cols);
+    void *address_far = (void*)(GET_BDA(video_pagesize) * cp.page
                                 + (cp.x + cp.y * nbcols) * 2);
 
     if (ca.use_attr) {
@@ -334,24 +338,23 @@ void
 vgafb_write_char(struct cursorpos cp, struct carattr ca)
 {
     // Get the mode
-    struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+    struct vgamode_s *vmode_g = get_current_mode();
     if (!vmode_g)
         return;
 
     // FIXME gfx mode not complete
     switch (GET_GLOBAL(vmode_g->memmodel)) {
-    case CTEXT:
-    case MTEXT:
+    case MM_TEXT:
         write_text_char(vmode_g, cp, ca);
         break;
-    case PLANAR4:
-    case PLANAR1:
+    case MM_PLANAR:
         write_gfx_char_pl4(vmode_g, cp, ca);
         break;
-    case CGA:
+    case MM_CGA:
         write_gfx_char_cga(vmode_g, cp, ca);
         break;
-    case LINEAR8:
+    case MM_DIRECT:
+    case MM_PACKED:
         write_gfx_char_lin(vmode_g, cp, ca);
         break;
     }
@@ -361,22 +364,19 @@ struct carattr
 vgafb_read_char(struct cursorpos cp)
 {
     // Get the mode
-    struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+    struct vgamode_s *vmode_g = get_current_mode();
     if (!vmode_g)
         goto fail;
 
-    if (!(GET_GLOBAL(vmode_g->memmodel) & TEXT)) {
+    if (GET_GLOBAL(vmode_g->memmodel) != MM_TEXT) {
         // FIXME gfx mode
         dprintf(1, "Read char in graphics mode\n");
         goto fail;
     }
 
-    // Get the dimensions
-    u16 nbrows = GET_BDA(video_rows) + 1;
-    u16 nbcols = GET_BDA(video_cols);
-
     // Compute the address
-    u16 *address_far = (void*)(SCREEN_MEM_START(nbcols, nbrows, cp.page)
+    u16 nbcols = GET_BDA(video_cols);
+    u16 *address_far = (void*)(GET_BDA(video_pagesize) * cp.page
                                + (cp.x + cp.y * nbcols) * 2);
     u16 v = GET_FARVAR(GET_GLOBAL(vmode_g->sstart), *address_far);
     struct carattr ca = {v, v>>8, 0};
@@ -396,37 +396,34 @@ void
 vgafb_write_pixel(u8 color, u16 x, u16 y)
 {
     // Get the mode
-    struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+    struct vgamode_s *vmode_g = get_current_mode();
     if (!vmode_g)
         return;
-    if (GET_GLOBAL(vmode_g->memmodel) & TEXT)
-        return;
 
-    u8 *addr_far, mask, attr, data;
+    u8 *addr_far, mask, attr, data, i;
     switch (GET_GLOBAL(vmode_g->memmodel)) {
-    case PLANAR4:
-    case PLANAR1:
+    case MM_PLANAR:
         addr_far = (void*)(x / 8 + y * GET_BDA(video_cols));
         mask = 0x80 >> (x & 0x07);
-        stdvga_grdc_write(0x08, mask);
-        stdvga_grdc_write(0x05, 0x02);
-        data = GET_FARVAR(SEG_GRAPH, *addr_far);
-        if (color & 0x80)
-            stdvga_grdc_write(0x03, 0x18);
-        SET_FARVAR(SEG_GRAPH, *addr_far, color);
-        stdvga_grdc_write(0x08, 0xff);
-        stdvga_grdc_write(0x05, 0x00);
-        stdvga_grdc_write(0x03, 0x00);
+        for (i=0; i<4; i++) {
+            stdvga_planar4_plane(i);
+            u8 colors = (color & (1<<i)) ? 0xff : 0x00;
+            u8 orig = GET_FARVAR(SEG_GRAPH, *addr_far);
+            if (color & 0x80)
+                colors ^= orig;
+            SET_FARVAR(SEG_GRAPH, *addr_far, (colors & mask) | (orig & ~mask));
+        }
+        stdvga_planar4_plane(-1);
         break;
-    case CGA:
-        if (GET_GLOBAL(vmode_g->pixbits) == 2)
+    case MM_CGA:
+        if (GET_GLOBAL(vmode_g->depth) == 2)
             addr_far = (void*)((x >> 2) + (y >> 1) * 80);
         else
             addr_far = (void*)((x >> 3) + (y >> 1) * 80);
         if (y & 1)
             addr_far += 0x2000;
         data = GET_FARVAR(SEG_CTEXT, *addr_far);
-        if (GET_GLOBAL(vmode_g->pixbits) == 2) {
+        if (GET_GLOBAL(vmode_g->depth) == 2) {
             attr = (color & 0x03) << ((3 - (x & 0x03)) * 2);
             mask = 0x03 << ((3 - (x & 0x03)) * 2);
         } else {
@@ -441,10 +438,13 @@ vgafb_write_pixel(u8 color, u16 x, u16 y)
         }
         SET_FARVAR(SEG_CTEXT, *addr_far, data);
         break;
-    case LINEAR8:
+    case MM_DIRECT:
+    case MM_PACKED:
         addr_far = (void*)(x + y * (GET_BDA(video_cols) * 8));
         SET_FARVAR(SEG_GRAPH, *addr_far, color);
         break;
+    case MM_TEXT:
+        return;
     }
 }
 
@@ -452,40 +452,41 @@ u8
 vgafb_read_pixel(u16 x, u16 y)
 {
     // Get the mode
-    struct vgamode_s *vmode_g = find_vga_entry(GET_BDA(video_mode));
+    struct vgamode_s *vmode_g = get_current_mode();
     if (!vmode_g)
         return 0;
-    if (GET_GLOBAL(vmode_g->memmodel) & TEXT)
-        return 0;
 
     u8 *addr_far, mask, attr=0, data, i;
     switch (GET_GLOBAL(vmode_g->memmodel)) {
-    case PLANAR4:
-    case PLANAR1:
+    case MM_PLANAR:
         addr_far = (void*)(x / 8 + y * GET_BDA(video_cols));
         mask = 0x80 >> (x & 0x07);
         attr = 0x00;
         for (i = 0; i < 4; i++) {
-            stdvga_grdc_write(0x04, i);
+            stdvga_planar4_plane(i);
             data = GET_FARVAR(SEG_GRAPH, *addr_far) & mask;
             if (data > 0)
                 attr |= (0x01 << i);
         }
+        stdvga_planar4_plane(-1);
         break;
-    case CGA:
+    case MM_CGA:
         addr_far = (void*)((x >> 2) + (y >> 1) * 80);
         if (y & 1)
             addr_far += 0x2000;
         data = GET_FARVAR(SEG_CTEXT, *addr_far);
-        if (GET_GLOBAL(vmode_g->pixbits) == 2)
+        if (GET_GLOBAL(vmode_g->depth) == 2)
             attr = (data >> ((3 - (x & 0x03)) * 2)) & 0x03;
         else
             attr = (data >> (7 - (x & 0x07))) & 0x01;
         break;
-    case LINEAR8:
+    case MM_DIRECT:
+    case MM_PACKED:
         addr_far = (void*)(x + y * (GET_BDA(video_cols) * 8));
         attr = GET_FARVAR(SEG_GRAPH, *addr_far);
         break;
+    case MM_TEXT:
+        return 0;
     }
     return attr;
 }