diff options
Diffstat (limited to 'drivers/video/fbdev/gbefb.c')
| -rw-r--r-- | drivers/video/fbdev/gbefb.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/drivers/video/fbdev/gbefb.c b/drivers/video/fbdev/gbefb.c index 6d9ef39810c8..b63d55f481fa 100644 --- a/drivers/video/fbdev/gbefb.c +++ b/drivers/video/fbdev/gbefb.c @@ -22,9 +22,6 @@ #include <linux/module.h> #include <linux/io.h> -#ifdef CONFIG_X86 -#include <asm/mtrr.h> -#endif #ifdef CONFIG_MIPS #include <asm/addrspace.h> #endif @@ -38,6 +35,7 @@ static struct sgi_gbe *gbe; struct gbefb_par { struct fb_var_screeninfo var; struct gbe_timing_info timing; + int wc_cookie; int valid; }; @@ -1175,8 +1173,8 @@ static int gbefb_probe(struct platform_device *p_dev) if (gbe_mem_phys) { /* memory was allocated at boot time */ - gbe_mem = devm_ioremap_nocache(&p_dev->dev, gbe_mem_phys, - gbe_mem_size); + gbe_mem = devm_ioremap_wc(&p_dev->dev, gbe_mem_phys, + gbe_mem_size); if (!gbe_mem) { printk(KERN_ERR "gbefb: couldn't map framebuffer\n"); ret = -ENOMEM; @@ -1187,8 +1185,8 @@ static int gbefb_probe(struct platform_device *p_dev) } else { /* try to allocate memory with the classical allocator * this has high chance to fail on low memory machines */ - gbe_mem = dma_alloc_coherent(NULL, gbe_mem_size, &gbe_dma_addr, - GFP_KERNEL); + gbe_mem = dma_alloc_writecombine(NULL, gbe_mem_size, + &gbe_dma_addr, GFP_KERNEL); if (!gbe_mem) { printk(KERN_ERR "gbefb: couldn't allocate framebuffer memory\n"); ret = -ENOMEM; @@ -1198,9 +1196,8 @@ static int gbefb_probe(struct platform_device *p_dev) gbe_mem_phys = (unsigned long) gbe_dma_addr; } -#ifdef CONFIG_X86 - mtrr_add(gbe_mem_phys, gbe_mem_size, MTRR_TYPE_WRCOMB, 1); -#endif + par = info->par; + par->wc_cookie = arch_phys_wc_add(gbe_mem_phys, gbe_mem_size); /* map framebuffer memory into tiles table */ for (i = 0; i < (gbe_mem_size >> TILE_SHIFT); i++) @@ -1215,7 +1212,6 @@ static int gbefb_probe(struct platform_device *p_dev) /* reset GBE */ gbe_reset(); - par = info->par; /* turn on default video mode */ if (fb_find_mode(&par->var, info, mode_option, NULL, 0, default_mode, 8) == 0) @@ -1240,8 +1236,9 @@ static int gbefb_probe(struct platform_device *p_dev) return 0; out_gbe_unmap: + arch_phys_wc_del(par->wc_cookie); if (gbe_dma_addr) - dma_free_coherent(NULL, gbe_mem_size, gbe_mem, gbe_mem_phys); + dma_free_writecombine(NULL, gbe_mem_size, gbe_mem, gbe_mem_phys); out_tiles_free: dma_free_coherent(NULL, GBE_TLB_SIZE * sizeof(uint16_t), (void *)gbe_tiles.cpu, gbe_tiles.dma); @@ -1256,11 +1253,13 @@ out_release_framebuffer: static int gbefb_remove(struct platform_device* p_dev) { struct fb_info *info = platform_get_drvdata(p_dev); + struct gbefb_par *par = info->par; unregister_framebuffer(info); gbe_turn_off(); + arch_phys_wc_del(par->wc_cookie); if (gbe_dma_addr) - dma_free_coherent(NULL, gbe_mem_size, gbe_mem, gbe_mem_phys); + dma_free_writecombine(NULL, gbe_mem_size, gbe_mem, gbe_mem_phys); dma_free_coherent(NULL, GBE_TLB_SIZE * sizeof(uint16_t), (void *)gbe_tiles.cpu, gbe_tiles.dma); release_mem_region(GBE_BASE, sizeof(struct sgi_gbe)); |