[PATCH 1/9] drm/etnaviv: Implement mmap as GEM object function

[Thomas Zimmermann <tzimmermann@xxxxxxx>]

Moving the driver-specific mmap code into a GEM object function allows
for using DRM helpers for various mmap callbacks.

The respective etnaviv functions are being removed. The file_operations
structure fops is now being created by the helper macro
DEFINE_DRM_GEM_FOPS().

Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
 drivers/gpu/drm/etnaviv/etnaviv_drv.c       | 14 ++------------
 drivers/gpu/drm/etnaviv/etnaviv_drv.h       |  3 ---
 drivers/gpu/drm/etnaviv/etnaviv_gem.c       | 18 +++++-------------
 drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 13 -------------
 4 files changed, 7 insertions(+), 41 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c 
b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index f0a07278ad04..7dcc6392792d 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -468,17 +468,7 @@ static const struct drm_ioctl_desc etnaviv_ioctls[] = {
        ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_RENDER_ALLOW),
 };
 
-static const struct file_operations fops = {
-       .owner              = THIS_MODULE,
-       .open               = drm_open,
-       .release            = drm_release,
-       .unlocked_ioctl     = drm_ioctl,
-       .compat_ioctl       = drm_compat_ioctl,
-       .poll               = drm_poll,
-       .read               = drm_read,
-       .llseek             = no_llseek,
-       .mmap               = etnaviv_gem_mmap,
-};
+DEFINE_DRM_GEM_FOPS(fops);
 
 static const struct drm_driver etnaviv_drm_driver = {
        .driver_features    = DRIVER_GEM | DRIVER_RENDER,
@@ -487,7 +477,7 @@ static const struct drm_driver etnaviv_drm_driver = {
        .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
        .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
        .gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
-       .gem_prime_mmap     = etnaviv_gem_prime_mmap,
+       .gem_prime_mmap     = drm_gem_prime_mmap,
 #ifdef CONFIG_DEBUG_FS
        .debugfs_init       = etnaviv_debugfs_init,
 #endif
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h 
b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
index 003288ebd896..049ae87de9be 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
@@ -47,12 +47,9 @@ struct etnaviv_drm_private {
 int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
                struct drm_file *file);
 
-int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset);
 struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj);
 int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map 
*map);
-int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
-                          struct vm_area_struct *vma);
 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device 
*dev,
        struct dma_buf_attachment *attach, struct sg_table *sg);
 int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c 
b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index b8fa6ed3dd73..8f1b5af47dd6 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -130,8 +130,7 @@ static int etnaviv_gem_mmap_obj(struct etnaviv_gem_object 
*etnaviv_obj,
 {
        pgprot_t vm_page_prot;
 
-       vma->vm_flags &= ~VM_PFNMAP;
-       vma->vm_flags |= VM_MIXEDMAP;
+       vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
 
        vm_page_prot = vm_get_page_prot(vma->vm_flags);
 
@@ -154,19 +153,11 @@ static int etnaviv_gem_mmap_obj(struct etnaviv_gem_object 
*etnaviv_obj,
        return 0;
 }
 
-int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma)
+static int etnaviv_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct 
*vma)
 {
-       struct etnaviv_gem_object *obj;
-       int ret;
-
-       ret = drm_gem_mmap(filp, vma);
-       if (ret) {
-               DBG("mmap failed: %d", ret);
-               return ret;
-       }
+       struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
 
-       obj = to_etnaviv_bo(vma->vm_private_data);
-       return obj->ops->mmap(obj, vma);
+       return etnaviv_obj->ops->mmap(etnaviv_obj, vma);
 }
 
 static vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf)
@@ -567,6 +558,7 @@ static const struct drm_gem_object_funcs 
etnaviv_gem_object_funcs = {
        .unpin = etnaviv_gem_prime_unpin,
        .get_sg_table = etnaviv_gem_prime_get_sg_table,
        .vmap = etnaviv_gem_prime_vmap,
+       .mmap = etnaviv_gem_mmap,
        .vm_ops = &vm_ops,
 };
 
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c 
b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
index b390dd4d60b7..4d9e8e9b6191 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -34,19 +34,6 @@ int etnaviv_gem_prime_vmap(struct drm_gem_object *obj, 
struct dma_buf_map *map)
        return 0;
 }
 
-int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
-                          struct vm_area_struct *vma)
-{
-       struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
-       int ret;
-
-       ret = drm_gem_mmap_obj(obj, obj->size, vma);
-       if (ret < 0)
-               return ret;
-
-       return etnaviv_obj->ops->mmap(etnaviv_obj, vma);
-}
-
 int etnaviv_gem_prime_pin(struct drm_gem_object *obj)
 {
        if (!obj->import_attach) {
-- 
2.31.1