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Message-Id: <20191016115203.20095-3-kraxel@redhat.com>
Date: Wed, 16 Oct 2019 13:51:54 +0200
From: Gerd Hoffmann <kraxel@...hat.com>
To: dri-devel@...ts.freedesktop.org
Cc: Thomas Zimmermann <tzimmermann@...e.de>,
Daniel Vetter <daniel.vetter@...ll.ch>,
Gerd Hoffmann <kraxel@...hat.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>, Rob Herring <robh@...nel.org>,
Tomeu Vizoso <tomeu.vizoso@...labora.com>,
Steven Price <steven.price@....com>,
Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com>,
Eric Anholt <eric@...olt.net>,
linux-kernel@...r.kernel.org (open list),
virtualization@...ts.linux-foundation.org (open list:VIRTIO GPU DRIVER)
Subject: [PATCH v4 02/11] drm/shmem: switch shmem helper to &drm_gem_object_funcs.mmap
Switch gem shmem helper to the new mmap() workflow,
from &gem_driver.fops.mmap to &drm_gem_object_funcs.mmap.
v2: Fix vm_flags and vm_page_prot handling.
Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
Reviewed-by: Steven Price <steven.price@....com>
---
include/drm/drm_gem_shmem_helper.h | 6 ++----
drivers/gpu/drm/drm_gem_shmem_helper.c | 28 +++++++++----------------
drivers/gpu/drm/panfrost/panfrost_gem.c | 2 +-
drivers/gpu/drm/v3d/v3d_bo.c | 2 +-
drivers/gpu/drm/virtio/virtgpu_object.c | 2 +-
5 files changed, 15 insertions(+), 25 deletions(-)
diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h
index 01f514521687..d89f2116c8ab 100644
--- a/include/drm/drm_gem_shmem_helper.h
+++ b/include/drm/drm_gem_shmem_helper.h
@@ -111,7 +111,7 @@ struct drm_gem_shmem_object {
.poll = drm_poll,\
.read = drm_read,\
.llseek = noop_llseek,\
- .mmap = drm_gem_shmem_mmap, \
+ .mmap = drm_gem_mmap, \
}
struct drm_gem_shmem_object *drm_gem_shmem_create(struct drm_device *dev, size_t size);
@@ -143,9 +143,7 @@ drm_gem_shmem_create_with_handle(struct drm_file *file_priv,
int drm_gem_shmem_dumb_create(struct drm_file *file, struct drm_device *dev,
struct drm_mode_create_dumb *args);
-int drm_gem_shmem_mmap(struct file *filp, struct vm_area_struct *vma);
-
-extern const struct vm_operations_struct drm_gem_shmem_vm_ops;
+int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
void drm_gem_shmem_print_info(struct drm_printer *p, unsigned int indent,
const struct drm_gem_object *obj);
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index f5918707672f..a9a586630517 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -32,7 +32,7 @@ static const struct drm_gem_object_funcs drm_gem_shmem_funcs = {
.get_sg_table = drm_gem_shmem_get_sg_table,
.vmap = drm_gem_shmem_vmap,
.vunmap = drm_gem_shmem_vunmap,
- .vm_ops = &drm_gem_shmem_vm_ops,
+ .mmap = drm_gem_shmem_mmap,
};
/**
@@ -505,39 +505,30 @@ static void drm_gem_shmem_vm_close(struct vm_area_struct *vma)
drm_gem_vm_close(vma);
}
-const struct vm_operations_struct drm_gem_shmem_vm_ops = {
+static const struct vm_operations_struct drm_gem_shmem_vm_ops = {
.fault = drm_gem_shmem_fault,
.open = drm_gem_shmem_vm_open,
.close = drm_gem_shmem_vm_close,
};
-EXPORT_SYMBOL_GPL(drm_gem_shmem_vm_ops);
/**
* drm_gem_shmem_mmap - Memory-map a shmem GEM object
- * @filp: File object
+ * @obj: gem object
* @vma: VMA for the area to be mapped
*
* This function implements an augmented version of the GEM DRM file mmap
* operation for shmem objects. Drivers which employ the shmem helpers should
- * use this function as their &file_operations.mmap handler in the DRM device file's
- * file_operations structure.
- *
- * Instead of directly referencing this function, drivers should use the
- * DEFINE_DRM_GEM_SHMEM_FOPS() macro.
+ * use this function as their &drm_gem_object_funcs.mmap handler.
*
* Returns:
* 0 on success or a negative error code on failure.
*/
-int drm_gem_shmem_mmap(struct file *filp, struct vm_area_struct *vma)
+int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
{
struct drm_gem_shmem_object *shmem;
int ret;
- ret = drm_gem_mmap(filp, vma);
- if (ret)
- return ret;
-
- shmem = to_drm_gem_shmem_obj(vma->vm_private_data);
+ shmem = to_drm_gem_shmem_obj(obj);
ret = drm_gem_shmem_get_pages(shmem);
if (ret) {
@@ -545,9 +536,10 @@ int drm_gem_shmem_mmap(struct file *filp, struct vm_area_struct *vma)
return ret;
}
- /* VM_PFNMAP was set by drm_gem_mmap() */
- vma->vm_flags &= ~VM_PFNMAP;
- vma->vm_flags |= VM_MIXEDMAP;
+ vma->vm_flags |= VM_IO | VM_MIXEDMAP | 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);
+ vma->vm_ops = &drm_gem_shmem_vm_ops;
/* Remove the fake offset */
vma->vm_pgoff -= drm_vma_node_start(&shmem->base.vma_node);
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c
index acb07fe06580..deca0c30bbd4 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.c
@@ -112,7 +112,7 @@ static const struct drm_gem_object_funcs panfrost_gem_funcs = {
.get_sg_table = drm_gem_shmem_get_sg_table,
.vmap = drm_gem_shmem_vmap,
.vunmap = drm_gem_shmem_vunmap,
- .vm_ops = &drm_gem_shmem_vm_ops,
+ .mmap = drm_gem_shmem_mmap,
};
/**
diff --git a/drivers/gpu/drm/v3d/v3d_bo.c b/drivers/gpu/drm/v3d/v3d_bo.c
index a22b75a3a533..edd299ab53d8 100644
--- a/drivers/gpu/drm/v3d/v3d_bo.c
+++ b/drivers/gpu/drm/v3d/v3d_bo.c
@@ -58,7 +58,7 @@ static const struct drm_gem_object_funcs v3d_gem_funcs = {
.get_sg_table = drm_gem_shmem_get_sg_table,
.vmap = drm_gem_shmem_vmap,
.vunmap = drm_gem_shmem_vunmap,
- .vm_ops = &drm_gem_shmem_vm_ops,
+ .mmap = drm_gem_shmem_mmap,
};
/* gem_create_object function for allocating a BO struct and doing
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index 69a3d310ff70..017a9e0fc3bb 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -86,7 +86,7 @@ static const struct drm_gem_object_funcs virtio_gpu_gem_funcs = {
.get_sg_table = drm_gem_shmem_get_sg_table,
.vmap = drm_gem_shmem_vmap,
.vunmap = drm_gem_shmem_vunmap,
- .vm_ops = &drm_gem_shmem_vm_ops,
+ .mmap = &drm_gem_shmem_mmap,
};
struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
--
2.18.1
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