#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/init.h>
+#include <video/vga.h>
#include <asm/io.h>
#include <asm/mtrr.h>
};
static int inverse = 0;
-static int mtrr = 1;
+static int mtrr = 3; /* default to write-combining */
static int vram_remap __initdata = 0; /* Set amount of memory to be used */
static int vram_total __initdata = 0; /* Set total amount of memory */
static int pmi_setpal = 0; /* pmi for palette changes ??? */
static void (*pmi_start)(void);
static void (*pmi_pal)(void);
static int depth;
+static int vga_compat;
/* --------------------------------------------------------------------- */
return 0;
}
+static int vesafb_blank(int blank, struct fb_info *info)
+{
+ int err = 1;
+
+ if (vga_compat) {
+ int loop = 10000;
+ u8 seq = 0, crtc17 = 0;
+
+ err = 0;
+
+ if (blank) {
+ seq = 0x20;
+ crtc17 = 0x00;
+ } else {
+ seq = 0x00;
+ crtc17 = 0x80;
+ }
+
+ vga_wseq(NULL, 0x00, 0x01);
+ seq |= vga_rseq(NULL, 0x01) & ~0x20;
+ vga_wseq(NULL, 0x00, seq);
+
+ crtc17 |= vga_rcrt(NULL, 0x17) & ~0x80;
+ while (loop--);
+ vga_wcrt(NULL, 0x17, crtc17);
+ vga_wseq(NULL, 0x00, 0x03);
+ }
+
+ return err;
+}
+
static void vesa_setpalette(int regno, unsigned red, unsigned green,
unsigned blue)
{
.owner = THIS_MODULE,
.fb_setcolreg = vesafb_setcolreg,
.fb_pan_display = vesafb_pan_display,
+ .fb_blank = vesafb_blank,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
pmi_setpal=0;
else if (! strcmp(this_opt, "pmipal"))
pmi_setpal=1;
- else if (! strcmp(this_opt, "mtrr"))
- mtrr=1;
+ else if (! strncmp(this_opt, "mtrr:", 5))
+ mtrr = simple_strtoul(this_opt+5, NULL, 0);
else if (! strcmp(this_opt, "nomtrr"))
mtrr=0;
else if (! strncmp(this_opt, "vtotal:", 7))
if (mtrr) {
unsigned int temp_size = size_total;
- /* Find the largest power-of-two */
- while (temp_size & (temp_size - 1))
- temp_size &= (temp_size - 1);
-
- /* Try and find a power of two to add */
- while (temp_size > PAGE_SIZE &&
- mtrr_add(vesafb_fix.smem_start, temp_size, MTRR_TYPE_WRCOMB, 1)==-EINVAL) {
- temp_size >>= 1;
+ unsigned int type = 0;
+
+ switch (mtrr) {
+ case 1:
+ type = MTRR_TYPE_UNCACHABLE;
+ break;
+ case 2:
+ type = MTRR_TYPE_WRBACK;
+ break;
+ case 3:
+ type = MTRR_TYPE_WRCOMB;
+ break;
+ case 4:
+ type = MTRR_TYPE_WRTHROUGH;
+ break;
+ default:
+ type = 0;
+ break;
+ }
+
+ if (type) {
+ int rc;
+
+ /* Find the largest power-of-two */
+ while (temp_size & (temp_size - 1))
+ temp_size &= (temp_size - 1);
+
+ /* Try and find a power of two to add */
+ do {
+ rc = mtrr_add(vesafb_fix.smem_start, temp_size,
+ type, 1);
+ temp_size >>= 1;
+ } while (temp_size >= PAGE_SIZE && rc == -EINVAL);
}
}
info->flags = FBINFO_FLAG_DEFAULT |
(ypan) ? FBINFO_HWACCEL_YPAN : 0;
+ vga_compat = (screen_info.capabilities & 2) ? 0 : 1;
+ printk("vesafb: Mode is %sVGA compatible\n",
+ (vga_compat) ? "" : "not ");
+
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
err = -ENOMEM;
goto err;