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Directly call kmem_alloc_contig to allocate framebuffer memory

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and pass VM_MEMATTR_UNCACHEABLE (no-cache, no-buffer).
This fixes screen refreshing problem when data is updated too slowly.

Discussed with:	ian
This commit is contained in:
Ruslan Bukin 2014-03-30 14:42:53 +00:00
parent 89eecf5b97
commit 1a59c06c73
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=263934
1 changed files with 6 additions and 2 deletions
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8
sys/arm/samsung/exynos/exynos5_fimd.c
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@ -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