svn commit: r263934 - head/sys/arm/samsung/exynos

[Ruslan Bukin]

Author: br
Date: Sun Mar 30 14:42:53 2014
New Revision: 263934
URL: http://svnweb.freebsd.org/changeset/base/263934

Log:
  Directly call kmem_alloc_contig to allocate framebuffer memory
  and pass VM_MEMATTR_UNCACHEABLE (no-cache, no-buffer).
  This fixes screen refreshing problem when data is updated too slowly.
  
  Discussed with:	ian

Modified:
  head/sys/arm/samsung/exynos/exynos5_fimd.c

Modified: head/sys/arm/samsung/exynos/exynos5_fimd.c
==============================================================================
--- head/sys/arm/samsung/exynos/exynos5_fimd.c	Sun Mar 30 14:25:14 2014	(r263933)
+++ head/sys/arm/samsung/exynos/exynos5_fimd.c	Sun Mar 30 14:42:53 2014	(r263934)
@@ -47,6 +47,10 @@ __FBSDID("$FreeBSD$");
 #include <sys/eventhandler.h>
 #include <sys/gpio.h>
 
+#include <vm/vm.h>
+#include <vm/vm_extern.h>
+#include <vm/vm_kern.h>
+
 #include <dev/fdt/fdt_common.h>
 #include <dev/ofw/openfirm.h>
 #include <dev/ofw/ofw_bus.h>
@@ -351,8 +355,8 @@ fimd_attach(device_t dev)
 	sc->sc_info.fb_stride = sc->sc_info.fb_width * 2;
 	sc->sc_info.fb_bpp = sc->sc_info.fb_depth = 16;
 	sc->sc_info.fb_size = sc->sc_info.fb_height * sc->sc_info.fb_stride;
-	sc->sc_info.fb_vbase = (intptr_t)contigmalloc(sc->sc_info.fb_size,
-	    M_DEVBUF, M_ZERO, 0, ~0, PAGE_SIZE, 0);
+	sc->sc_info.fb_vbase = (intptr_t)kmem_alloc_contig(kernel_arena,
+	    sc->sc_info.fb_size, M_ZERO, 0, ~0, PAGE_SIZE, 0, VM_MEMATTR_UNCACHEABLE);
 	sc->sc_info.fb_pbase = (intptr_t)vtophys(sc->sc_info.fb_vbase);
 
 #if 0