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Do not penalize correct or correctable VESA mode tables by calling another

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VBE function.  Most problems should be corrected by the mode table sanity
check and we only need the paranoid in extremely rare cases.
This commit is contained in:
Jung-uk Kim 2010-03-25 17:51:05 +00:00
parent 09fcdf114e
commit bb6ba5f6b9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=205653
1 changed files with 14 additions and 7 deletions
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21
sys/dev/fb/vesa.c
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@ -189,7 +189,9 @@ static int vesa_bios_load_palette2(int start, int colors, u_char *r, u_char *g,
#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG)
static ssize_t vesa_bios_state_buf_size(void);
static int vesa_bios_save_restore(int code, void *p, size_t size);
#ifdef MODE_TABLE_BROKEN
static int vesa_bios_get_line_length(void);
#endif
static int vesa_bios_set_line_length(int pixel, int *bytes, int *lines);
#if 0
static int vesa_bios_get_start(int *x, int *y);
@ -558,6 +560,7 @@ vesa_bios_save_restore(int code, void *p, size_t size)
return (regs.R_AX != 0x004f);
}
#ifdef MODE_TABLE_BROKEN
static int
vesa_bios_get_line_length(void)
{
@ -574,6 +577,7 @@ vesa_bios_get_line_length(void)
return (regs.R_BX);
}
#endif
static int
vesa_bios_set_line_length(int pixel, int *bytes, int *lines)
@ -1213,7 +1217,6 @@ static int
vesa_set_mode(video_adapter_t *adp, int mode)
{
video_info_t info;
int bpsl;
if (adp != vesa_adp)
return ((*prevvidsw->set_mode)(adp, mode));
@ -1295,14 +1298,18 @@ vesa_set_mode(video_adapter_t *adp, int mode)
if ((info.vi_flags & V_INFO_GRAPHICS) != 0)
vesa_adp->va_line_width /= info.vi_planes;
#ifdef MODE_TABLE_BROKEN
/* If VBE function returns bigger bytes per scan line, use it. */
bpsl = vesa_bios_get_line_length();
if (bpsl > vesa_adp->va_line_width) {
vesa_adp->va_line_width = bpsl;
info.vi_buffer_size = bpsl * info.vi_height;
if ((info.vi_flags & V_INFO_GRAPHICS) != 0)
info.vi_buffer_size *= info.vi_planes;
{
int bpsl = vesa_bios_get_line_length();
if (bpsl > vesa_adp->va_line_width) {
vesa_adp->va_line_width = bpsl;
info.vi_buffer_size = bpsl * info.vi_height;
if ((info.vi_flags & V_INFO_GRAPHICS) != 0)
info.vi_buffer_size *= info.vi_planes;
}
}
#endif
if (info.vi_flags & V_INFO_LINEAR) {
#if VESA_DEBUG > 1