diff options
| author |   Thomas Zimmermann <tzimmermann@suse.de> | 2019-11-07 10:43:06 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-11-08 12:30:07 +0100 |
| commit | 08b22f65b309649057edfbae1d8772b04210b486 (patch) | |
| tree | 235cfcc142e557bfeba276b716e236714196e845 /drivers/gpu/drm/udl/udl_drv.c | |
| parent | drm/udl: Allocate GEM object via struct drm_driver.gem_create_object (diff) | |
| download | linux-dev-08b22f65b309649057edfbae1d8772b04210b486.tar.xz linux-dev-08b22f65b309649057edfbae1d8772b04210b486.zip | |
drm/udl: Switch to SHMEM
Udl's GEM code and the generic SHMEM are almost identical. Replace
the former with SHMEM. The dmabuf support in udl is being replaced
with generic GEM PRIME functions.
The main difference is in the caching flags for mmap pages. By
default, SHMEM always sets (uncached) write combining. In udl's
memory management code, only imported buffers use write combining.
Memory pages of locally created buffer objects are mmap'ed with
caching enabled. To keep the optimization, udl provides its own
mmap function for GEM objects where it fixes up the mapping flags.
v3:
- restore udl vmap that enables caching
v2:
- remove obsolete code in a separate patch
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107094307.19870-4-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/udl/udl_drv.c')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.c | 29 |
1 files changed, 3 insertions, 26 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 778a0b652f64..563cc5809e56 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -8,6 +8,7 @@ #include <drm/drm_crtc_helper.h> #include <drm/drm_drv.h> #include <drm/drm_file.h> +#include <drm/drm_gem_shmem_helper.h> #include <drm/drm_ioctl.h> #include <drm/drm_probe_helper.h> #include <drm/drm_print.h> @@ -32,23 +33,7 @@ static int udl_usb_resume(struct usb_interface *interface) return 0; } -static const struct vm_operations_struct udl_gem_vm_ops = { - .fault = udl_gem_fault, - .open = drm_gem_vm_open, - .close = drm_gem_vm_close, -}; - -static const struct file_operations udl_driver_fops = { - .owner = THIS_MODULE, - .open = drm_open, - .mmap = udl_drm_gem_mmap, - .poll = drm_poll, - .read = drm_read, - .unlocked_ioctl = drm_ioctl, - .release = drm_release, - .compat_ioctl = drm_compat_ioctl, - .llseek = noop_llseek, -}; +DEFINE_DRM_GEM_FOPS(udl_driver_fops); static void udl_driver_release(struct drm_device *dev) { @@ -63,18 +48,10 @@ static struct drm_driver driver = { .release = udl_driver_release, /* gem hooks */ - .gem_free_object_unlocked = udl_gem_free_object, .gem_create_object = udl_driver_gem_create_object, - .gem_vm_ops = &udl_gem_vm_ops, - .dumb_create = udl_dumb_create, - .dumb_map_offset = udl_gem_mmap, .fops = &udl_driver_fops, - - .prime_handle_to_fd = drm_gem_prime_handle_to_fd, - .prime_fd_to_handle = drm_gem_prime_fd_to_handle, - .gem_prime_export = udl_gem_prime_export, - .gem_prime_import = udl_gem_prime_import, + DRM_GEM_SHMEM_DRIVER_OPS, .name = DRIVER_NAME, .desc = DRIVER_DESC, |