From d41b7a3a745a32dff6edeb31962da4e24f870a1d Mon Sep 17 00:00:00 2001 From: Hyungwon Hwang Date: Fri, 16 Jan 2015 23:57:33 +0100 Subject: exynos: Don't use DRM_EXYNOS_GEM_{MAP_OFFSET/MMAP} ioctls The ioctl DRM_EXYNOS_GEM_MAP_OFFSET and DRM_EXYNOS_GEM_MMAP are removed from the linux kernel. This patch modifies libdrm and libkms to use drm generic ioctls instead of the removed ioctls. v2: The original patch was erroneous. In case the MODE_MAP_DUMB ioctl failed it would return the retvalue as a void-pointer. Users of libdrm would then happily use that ptr, eventually leading to a segfault. Change this to return NULL in that case and also restore the previous behaviour of logging to stderr. The other error was that 'bo->vaddr' was never filled with the mapped buffer address. Hence exynos_bo_map still returned NULL even if the buffer mapping succeeded. Signed-off-by: Hyungwon Hwang Signed-off-by: Inki Dae Signed-off-by: Tobias Jakobi Signed-off-by: Rob Clark --- exynos/exynos_drm.c | 19 ++++++++++++------- libkms/exynos.c | 7 ++++--- 2 files changed, 16 insertions(+), 10 deletions(-) diff --git a/exynos/exynos_drm.c b/exynos/exynos_drm.c index 4c7dd13e..c5dd9489 100644 --- a/exynos/exynos_drm.c +++ b/exynos/exynos_drm.c @@ -283,20 +283,25 @@ drm_public void *exynos_bo_map(struct exynos_bo *bo) { if (!bo->vaddr) { struct exynos_device *dev = bo->dev; - struct drm_exynos_gem_mmap req = { - .handle = bo->handle, - .size = bo->size, - }; + struct drm_mode_map_dumb arg; + void *map = NULL; int ret; - ret = drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_GEM_MMAP, &req); + memset(&arg, 0, sizeof(arg)); + arg.handle = bo->handle; + + ret = drmIoctl(dev->fd, DRM_IOCTL_MODE_MAP_DUMB, &arg); if (ret) { - fprintf(stderr, "failed to mmap[%s].\n", + fprintf(stderr, "failed to map dumb buffer[%s].\n", strerror(errno)); return NULL; } - bo->vaddr = (void *)(uintptr_t)req.mapped; + map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED, + dev->fd, arg.offset); + + if (map != MAP_FAILED) + bo->vaddr = map; } return bo->vaddr; diff --git a/libkms/exynos.c b/libkms/exynos.c index 92e329cd..11234825 100644 --- a/libkms/exynos.c +++ b/libkms/exynos.c @@ -25,6 +25,7 @@ #include #include "xf86drm.h" +#include "libdrm.h" #include "exynos_drm.h" struct exynos_bo @@ -124,7 +125,7 @@ static int exynos_bo_map(struct kms_bo *_bo, void **out) { struct exynos_bo *bo = (struct exynos_bo *)_bo; - struct drm_exynos_gem_map_off arg; + struct drm_mode_map_dumb arg; void *map = NULL; int ret; @@ -137,11 +138,11 @@ exynos_bo_map(struct kms_bo *_bo, void **out) memset(&arg, 0, sizeof(arg)); arg.handle = bo->base.handle; - ret = drmCommandWriteRead(bo->base.kms->fd, DRM_EXYNOS_GEM_MAP_OFFSET, &arg, sizeof(arg)); + ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_MODE_MAP_DUMB, &arg); if (ret) return ret; - map = mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset); + map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset); if (map == MAP_FAILED) return -errno; -- cgit v1.2.3