Signed-off-by: Gerd Hoffmann kraxel@redhat.com --- vgasrc/bochsvga.c | 67 +++++++++++++++++++++++++++++++++++++++---------------- 1 file changed, 48 insertions(+), 19 deletions(-)
diff --git a/vgasrc/bochsvga.c b/vgasrc/bochsvga.c index b0ba1ec..9a0479c 100644 --- a/vgasrc/bochsvga.c +++ b/vgasrc/bochsvga.c @@ -91,6 +91,8 @@ static struct bochsvga_mode { 0x18c, { MM_DIRECT, 2560, 1600, 32, 8, 16, SEG_GRAPH } }, };
+static int dispi_found VAR16 = 0; + static int is_bochsvga_mode(struct vgamode_s *vmode_g) { return (vmode_g >= &bochsvga_modes[0].info @@ -100,9 +102,10 @@ static int is_bochsvga_mode(struct vgamode_s *vmode_g) struct vgamode_s *bochsvga_find_mode(int mode) { struct bochsvga_mode *m = bochsvga_modes; - for (; m < &bochsvga_modes[ARRAY_SIZE(bochsvga_modes)]; m++) - if (GET_GLOBAL(m->mode) == mode) - return &m->info; + if (dispi_found) + for (; m < &bochsvga_modes[ARRAY_SIZE(bochsvga_modes)]; m++) + if (GET_GLOBAL(m->mode) == mode) + return &m->info; return stdvga_find_mode(mode); }
@@ -110,12 +113,14 @@ void bochsvga_list_modes(u16 seg, u16 *dest, u16 *last) { struct bochsvga_mode *m = bochsvga_modes; - for (; m < &bochsvga_modes[ARRAY_SIZE(bochsvga_modes)] && dest<last; m++) { - u16 mode = GET_GLOBAL(m->mode); - if (mode == 0xffff) - continue; - SET_FARVAR(seg, *dest, mode); - dest++; + if (dispi_found) { + for (; m < &bochsvga_modes[ARRAY_SIZE(bochsvga_modes)] && dest<last; m++) { + u16 mode = GET_GLOBAL(m->mode); + if (mode == 0xffff) + continue; + SET_FARVAR(seg, *dest, mode); + dest++; + } } stdvga_list_modes(seg, dest, last); } @@ -128,6 +133,8 @@ bochsvga_list_modes(u16 seg, u16 *dest, u16 *last) int bochsvga_get_window(struct vgamode_s *vmode_g, int window) { + if (!dispi_found) + return stdvga_get_window(vmode_g, window); if (window != 0) return -1; return dispi_read(VBE_DISPI_INDEX_BANK); @@ -136,6 +143,8 @@ bochsvga_get_window(struct vgamode_s *vmode_g, int window) int bochsvga_set_window(struct vgamode_s *vmode_g, int window, int val) { + if (!dispi_found) + return stdvga_set_window(vmode_g, window, val); if (window != 0) return -1; dispi_write(VBE_DISPI_INDEX_BANK, val); @@ -147,6 +156,8 @@ bochsvga_set_window(struct vgamode_s *vmode_g, int window, int val) int bochsvga_get_linelength(struct vgamode_s *vmode_g) { + if (!dispi_found) + return stdvga_get_linelength(vmode_g); return dispi_read(VBE_DISPI_INDEX_VIRT_WIDTH) * vga_bpp(vmode_g) / 8; }
@@ -154,14 +165,18 @@ int bochsvga_set_linelength(struct vgamode_s *vmode_g, int val) { stdvga_set_linelength(vmode_g, val); - int pixels = (val * 8) / vga_bpp(vmode_g); - dispi_write(VBE_DISPI_INDEX_VIRT_WIDTH, pixels); + if (dispi_found) { + int pixels = (val * 8) / vga_bpp(vmode_g); + dispi_write(VBE_DISPI_INDEX_VIRT_WIDTH, pixels); + } return 0; }
int bochsvga_get_displaystart(struct vgamode_s *vmode_g) { + if (!dispi_found) + return stdvga_get_displaystart(vmode_g); int bpp = vga_bpp(vmode_g); int linelength = dispi_read(VBE_DISPI_INDEX_VIRT_WIDTH) * bpp / 8; int x = dispi_read(VBE_DISPI_INDEX_X_OFFSET); @@ -173,16 +188,20 @@ int bochsvga_set_displaystart(struct vgamode_s *vmode_g, int val) { stdvga_set_displaystart(vmode_g, val); - int bpp = vga_bpp(vmode_g); - int linelength = dispi_read(VBE_DISPI_INDEX_VIRT_WIDTH) * bpp / 8; - dispi_write(VBE_DISPI_INDEX_X_OFFSET, (val % linelength) * 8 / bpp); - dispi_write(VBE_DISPI_INDEX_Y_OFFSET, val / linelength); + if (dispi_found) { + int bpp = vga_bpp(vmode_g); + int linelength = dispi_read(VBE_DISPI_INDEX_VIRT_WIDTH) * bpp / 8; + dispi_write(VBE_DISPI_INDEX_X_OFFSET, (val % linelength) * 8 / bpp); + dispi_write(VBE_DISPI_INDEX_Y_OFFSET, val / linelength); + } return 0; }
int bochsvga_get_dacformat(struct vgamode_s *vmode_g) { + if (!dispi_found) + return stdvga_get_dacformat(vmode_g); u16 en = dispi_read(VBE_DISPI_INDEX_ENABLE); return (en & VBE_DISPI_8BIT_DAC) ? 8 : 6; } @@ -190,6 +209,8 @@ bochsvga_get_dacformat(struct vgamode_s *vmode_g) int bochsvga_set_dacformat(struct vgamode_s *vmode_g, int val) { + if (!dispi_found) + return stdvga_set_dacformat(vmode_g, val); u16 en = dispi_read(VBE_DISPI_INDEX_ENABLE); if (val == 6) en &= ~VBE_DISPI_8BIT_DAC; @@ -207,7 +228,7 @@ bochsvga_size_state(int states) int size = stdvga_size_state(states); if (size < 0) return size; - if (states & 8) + if (dispi_found && (states & 8)) size += (VBE_DISPI_INDEX_Y_OFFSET-VBE_DISPI_INDEX_XRES+1)*sizeof(u16); return size; } @@ -219,6 +240,8 @@ bochsvga_save_state(u16 seg, void *data, int states) if (ret < 0) return ret;
+ if (!dispi_found) + return 0; if (!(states & 8)) return 0;
@@ -245,6 +268,8 @@ bochsvga_restore_state(u16 seg, void *data, int states) if (ret < 0) return ret;
+ if (!dispi_found) + return 0; if (!(states & 8)) return 0;
@@ -274,9 +299,12 @@ bochsvga_restore_state(u16 seg, void *data, int states) int bochsvga_set_mode(struct vgamode_s *vmode_g, int flags) { - dispi_write(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_DISABLED); + if (dispi_found) + dispi_write(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_DISABLED); if (! is_bochsvga_mode(vmode_g)) return stdvga_set_mode(vmode_g, flags); + if (!dispi_found) + return -1;
u8 depth = GET_GLOBAL(vmode_g->depth); if (depth == 4) @@ -339,11 +367,12 @@ bochsvga_setup(void) /* Sanity checks */ dispi_write(VBE_DISPI_INDEX_ID, VBE_DISPI_ID0); if (dispi_read(VBE_DISPI_INDEX_ID) != VBE_DISPI_ID0) { - dprintf(1, "No VBE DISPI interface detected\n"); - return -1; + dprintf(1, "No VBE DISPI interface detected, falling back to stdvga\n"); + return 0; }
dispi_write(VBE_DISPI_INDEX_ID, VBE_DISPI_ID5); + dispi_found = 1;
if (GET_GLOBAL(HaveRunInit)) return 0;
-
Gerd Hoffmann