uvesafb,vesafb: create WC or WB PAT-entries

[sfrench/cifs-2.6.git] / drivers / video / vesafb.c

diff --git a/drivers/video/vesafb.c b/drivers/video/vesafb.c
index 6a069d04791415088f8b14d40f658279815cf721..a99bbe86db13d77183ac258333435c6be56ce187 100644 (file)
--- a/drivers/video/vesafb.c
+++ b/drivers/video/vesafb.c
@@ -303,19 +303,6 @@ static int __init vesafb_probe(struct platform_device *dev)
        info->apertures->ranges[0].base = screen_info.lfb_base;
        info->apertures->ranges[0].size = size_total;
 
-       info->screen_base = ioremap(vesafb_fix.smem_start, vesafb_fix.smem_len);
-       if (!info->screen_base) {
-               printk(KERN_ERR
-                      "vesafb: abort, cannot ioremap video memory 0x%x @ 0x%lx\n",
-                       vesafb_fix.smem_len, vesafb_fix.smem_start);
-               err = -EIO;
-               goto err;
-       }
-
-       printk(KERN_INFO "vesafb: framebuffer at 0x%lx, mapped to 0x%p, "
-              "using %dk, total %dk\n",
-              vesafb_fix.smem_start, info->screen_base,
-              size_remap/1024, size_total/1024);
        printk(KERN_INFO "vesafb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
               vesafb_defined.xres, vesafb_defined.yres, vesafb_defined.bits_per_pixel, vesafb_fix.line_length, screen_info.pages);
 
@@ -438,8 +425,7 @@ static int __init vesafb_probe(struct platform_device *dev)
                        int rc;
 
                        /* Find the largest power-of-two */
-                       while (temp_size & (temp_size - 1))
-                               temp_size &= (temp_size - 1);
+                       temp_size = roundup_pow_of_two(temp_size);
 
                        /* Try and find a power of two to add */
                        do {
@@ -451,6 +437,34 @@ static int __init vesafb_probe(struct platform_device *dev)
        }
 #endif
        
+       switch (mtrr) {
+       case 1: /* uncachable */
+               info->screen_base = ioremap_nocache(vesafb_fix.smem_start, vesafb_fix.smem_len);
+               break;
+       case 2: /* write-back */
+               info->screen_base = ioremap_cache(vesafb_fix.smem_start, vesafb_fix.smem_len);
+               break;
+       case 3: /* write-combining */
+               info->screen_base = ioremap_wc(vesafb_fix.smem_start, vesafb_fix.smem_len);
+               break;
+       case 4: /* write-through */
+       default:
+               info->screen_base = ioremap(vesafb_fix.smem_start, vesafb_fix.smem_len);
+               break;
+       }
+       if (!info->screen_base) {
+               printk(KERN_ERR
+                      "vesafb: abort, cannot ioremap video memory 0x%x @ 0x%lx\n",
+                       vesafb_fix.smem_len, vesafb_fix.smem_start);
+               err = -EIO;
+               goto err;
+       }
+
+       printk(KERN_INFO "vesafb: framebuffer at 0x%lx, mapped to 0x%p, "
+              "using %dk, total %dk\n",
+              vesafb_fix.smem_start, info->screen_base,
+              size_remap/1024, size_total/1024);
+
        info->fbops = &vesafb_ops;
        info->var = vesafb_defined;
        info->fix = vesafb_fix;