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
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