From: Thomas Zimmermann <tzimmermann@suse.de>
To: daniel@ffwll.ch, mripard@kernel.org,
maarten.lankhorst@linux.intel.com, l.stach@pengutronix.de,
linux+etnaviv@armlinux.org.uk, christian.gmeiner@gmail.com,
inki.dae@samsung.com, jy0922.shim@samsung.com,
sw0312.kim@samsung.com, kyungmin.park@samsung.com,
krzysztof.kozlowski@canonical.com, chunkuang.hu@kernel.org,
p.zabel@pengutronix.de, matthias.bgg@gmail.com,
robdclark@gmail.com, sean@poorly.run, airlied@redhat.com,
kraxel@redhat.com, hjc@rock-chips.com, heiko@sntech.de,
oleksandr_andrushchenko@epam.com, sumit.semwal@linaro.org,
christian.koenig@amd.com
Cc: dri-devel@lists.freedesktop.org, etnaviv@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org,
linux-mediatek@lists.infradead.org,
linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org,
virtualization@lists.linux-foundation.org,
spice-devel@lists.freedesktop.org,
linux-rockchip@lists.infradead.org,
xen-devel@lists.xenproject.org, linux-media@vger.kernel.org,
linaro-mm-sig@lists.linaro.org,
Thomas Zimmermann <tzimmermann@suse.de>
Subject: [PATCH 6/9] drm/vgem: Implement mmap as GEM object function
Date: Wed, 9 Jun 2021 13:20:09 +0200 [thread overview]
Message-ID: <20210609112012.10019-7-tzimmermann@suse.de> (raw)
In-Reply-To: <20210609112012.10019-1-tzimmermann@suse.de>
Moving the driver-specific mmap code into a GEM object function allows
for using DRM helpers for various mmap callbacks.
The respective vgem functions are being removed. The file_operations
structure vgem_driver_fops is now being created by the helper macro
DEFINE_DRM_GEM_FOPS().
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/vgem/vgem_drv.c | 46 ++++-----------------------------
1 file changed, 5 insertions(+), 41 deletions(-)
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index bf38a7e319d1..df634aa52638 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -239,32 +239,7 @@ static struct drm_ioctl_desc vgem_ioctls[] = {
DRM_IOCTL_DEF_DRV(VGEM_FENCE_SIGNAL, vgem_fence_signal_ioctl, DRM_RENDER_ALLOW),
};
-static int vgem_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- unsigned long flags = vma->vm_flags;
- int ret;
-
- ret = drm_gem_mmap(filp, vma);
- if (ret)
- return ret;
-
- /* Keep the WC mmaping set by drm_gem_mmap() but our pages
- * are ordinary and not special.
- */
- vma->vm_flags = flags | VM_DONTEXPAND | VM_DONTDUMP;
- return 0;
-}
-
-static const struct file_operations vgem_driver_fops = {
- .owner = THIS_MODULE,
- .open = drm_open,
- .mmap = vgem_mmap,
- .poll = drm_poll,
- .read = drm_read,
- .unlocked_ioctl = drm_ioctl,
- .compat_ioctl = drm_compat_ioctl,
- .release = drm_release,
-};
+DEFINE_DRM_GEM_FOPS(vgem_driver_fops);
static struct page **vgem_pin_pages(struct drm_vgem_gem_object *bo)
{
@@ -387,24 +362,12 @@ static void vgem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *ma
vgem_unpin_pages(bo);
}
-static int vgem_prime_mmap(struct drm_gem_object *obj,
- struct vm_area_struct *vma)
+static int vgem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
{
- int ret;
-
- if (obj->size < vma->vm_end - vma->vm_start)
- return -EINVAL;
-
- if (!obj->filp)
- return -ENODEV;
-
- ret = call_mmap(obj->filp, vma);
- if (ret)
- return ret;
-
vma_set_file(vma, obj->filp);
vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
+ vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot);
return 0;
}
@@ -416,6 +379,7 @@ static const struct drm_gem_object_funcs vgem_gem_object_funcs = {
.get_sg_table = vgem_prime_get_sg_table,
.vmap = vgem_prime_vmap,
.vunmap = vgem_prime_vunmap,
+ .mmap = vgem_prime_mmap,
.vm_ops = &vgem_gem_vm_ops,
};
@@ -433,7 +397,7 @@ static const struct drm_driver vgem_driver = {
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_import = vgem_prime_import,
.gem_prime_import_sg_table = vgem_prime_import_sg_table,
- .gem_prime_mmap = vgem_prime_mmap,
+ .gem_prime_mmap = drm_gem_prime_mmap,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
--
2.31.1
next prev parent reply other threads:[~2021-06-09 11:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-09 11:20 [PATCH 0/9] drm: Implement gem_prime_mmap with drm_gem_prime_mmap() Thomas Zimmermann
2021-06-09 11:20 ` [PATCH 1/9] drm/etnaviv: Implement mmap as GEM object function Thomas Zimmermann
2021-06-09 11:20 ` [PATCH 2/9] drm/exynox: " Thomas Zimmermann
2021-06-09 11:20 ` [PATCH 3/9] drm/mediatek: " Thomas Zimmermann
2021-06-09 11:20 ` [PATCH 4/9] drm/msm: " Thomas Zimmermann
2021-06-09 11:20 ` [PATCH 5/9] drm/qxl: Remove empty qxl_gem_prime_mmap() Thomas Zimmermann
2021-06-09 11:20 ` Thomas Zimmermann [this message]
2021-06-09 11:20 ` [PATCH 7/9] drm/xen: Implement mmap as GEM object function Thomas Zimmermann
2021-06-09 11:20 ` [PATCH 8/9] drm/rockchip: " Thomas Zimmermann
2021-06-09 11:20 ` [PATCH 9/9] drm: Update documentation and TODO of gem_prime_mmap hook Thomas Zimmermann
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