[PATCH RESEND 1/2] exynos: Don't use DRM_EXYNOS_GEM_{MAP_OFFSET/MMAP} ioctls

[Hyungwon Hwang]

+CC Rob clark

I sent these patches about a month ago, but could not get any response.
Can you review these patches? You can find the whole patch set from

https://patchwork.kernel.org/patch/5478981/
https://patchwork.kernel.org/patch/5478991/


On Fri, 12 Dec 2014 14:44:39 +0900
Hyungwon Hwang <human.hwang at samsung.com> wrote:

> 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.
> 
> Signed-off-by: Hyungwon Hwang <human.hwang at samsung.com>
> Signed-off-by: Inki Dae <inki.dae at samsung.com>
> ---
>  exynos/exynos_drm.c | 24 +++++++++++++-----------
>  libkms/exynos.c     |  7 ++++---
>  2 files changed, 17 insertions(+), 14 deletions(-)
> 
> diff --git a/exynos/exynos_drm.c b/exynos/exynos_drm.c
> index 4c7dd13..4cb6a6d 100644
> --- a/exynos/exynos_drm.c
> +++ b/exynos/exynos_drm.c
> @@ -283,20 +283,22 @@ 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);
> -		if (ret) {
> -			fprintf(stderr, "failed to mmap[%s].\n",
> -				strerror(errno));
> -			return NULL;
> -		}
> +		memset(&arg, 0, sizeof(arg));
> +		arg.handle = bo->handle;
> +
> +		ret = drmIoctl(dev->fd, DRM_IOCTL_MODE_MAP_DUMB,
> &arg);
> +		if (ret)
> +			return ret;
>  
> -		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)
> +			return NULL;
>  	}
>  
>  	return bo->vaddr;
> diff --git a/libkms/exynos.c b/libkms/exynos.c
> index 92e329c..1123482 100644
> --- a/libkms/exynos.c
> +++ b/libkms/exynos.c
> @@ -25,6 +25,7 @@
>  #include <sys/ioctl.h>
>  #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;
>  

Best regards,
Hyungwon Hwang