[PATCH v2 15/21] drm/vc4: Introduce GEM object functions

Thomas Zimmermann
2020-09-15T23:01:20Z

GEM object functions deprecate several similar callback interfaces in
struct drm_driver. This patch replaces the per-driver callbacks with
per-instance callbacks in vc4. The only exception is gem_prime_mmap,
which is non-trivial to convert.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Eric Anholt <eric@anholt.net>
---
drivers/gpu/drm/vc4/vc4_bo.c | 21 ++++++++++++++++++++-
drivers/gpu/drm/vc4/vc4_drv.c | 12 ------------
drivers/gpu/drm/vc4/vc4_drv.h | 1 -
3 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c
index 74ceebd62fbc..f432278173cd 100644
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -21,6 +21,8 @@
#include "vc4_drv.h"
#include "uapi/drm/vc4_drm.h"

+static vm_fault_t vc4_fault(struct vm_fault *vmf);
+
static const char * const bo_type_names[] = {
"kernel",
"V3D",
@@ -374,6 +376,21 @@ static struct vc4_bo *vc4_bo_get_from_cache(struct drm_device *dev,
return bo;
}

+static const struct vm_operations_struct vc4_vm_ops = {
+ .fault = vc4_fault,
+ .open = drm_gem_vm_open,
+ .close = drm_gem_vm_close,
+};
+
+static const struct drm_gem_object_funcs vc4_gem_object_funcs = {
+ .free = vc4_free_object,
+ .export = vc4_prime_export,
+ .get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .vmap = vc4_prime_vmap,
+ .vunmap = drm_gem_cma_prime_vunmap,
+ .vm_ops = &vc4_vm_ops,
+};
+
/**
* vc4_gem_create_object - Implementation of driver->gem_create_object.
* @dev: DRM device
@@ -400,6 +417,8 @@ struct drm_gem_object *vc4_create_object(struct drm_device *dev, size_t size)
vc4->bo_labels[VC4_BO_TYPE_KERNEL].size_allocated += size;
mutex_unlock(&vc4->bo_lock);

+ bo->base.base.funcs = &vc4_gem_object_funcs;
+
return &bo->base.base;
}

@@ -684,7 +703,7 @@ struct dma_buf * vc4_prime_export(struct drm_gem_object *obj, int flags)
return dmabuf;
}

-vm_fault_t vc4_fault(struct vm_fault *vmf)
+static vm_fault_t vc4_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct drm_gem_object *obj = vma->vm_private_data;
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index f1a5fd5dab6f..d27eaa2d0cfe 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -140,12 +140,6 @@ static void vc4_close(struct drm_device *dev, struct drm_file *file)
kfree(vc4file);
}

-static const struct vm_operations_struct vc4_vm_ops = {
- .fault = vc4_fault,
- .open = drm_gem_vm_open,
- .close = drm_gem_vm_close,
-};
-
static const struct file_operations vc4_drm_fops = {
.owner = THIS_MODULE,
.open = drm_open,
@@ -195,16 +189,10 @@ static struct drm_driver vc4_drm_driver = {
#endif

.gem_create_object = vc4_create_object,
- .gem_free_object_unlocked = vc4_free_object,
- .gem_vm_ops = &vc4_vm_ops,

.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
- .gem_prime_export = vc4_prime_export,
- .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
.gem_prime_import_sg_table = vc4_prime_import_sg_table,
- .gem_prime_vmap = vc4_prime_vmap,
- .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
.gem_prime_mmap = vc4_prime_mmap,

.dumb_create = vc4_dumb_create,
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
index 8c8d96b6289f..a22478a35199 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -799,7 +799,6 @@ int vc4_get_hang_state_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int vc4_label_bo_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
-vm_fault_t vc4_fault(struct vm_fault *vmf);
int vc4_mmap(struct file *filp, struct vm_area_struct *vma);
int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
struct drm_gem_object *vc4_prime_import_sg_table(struct drm_device *dev,
--
2.28.0