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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH 1/3] drm/exynox: Implement mmap as GEM object function
Hi Thomas and Daniel, 21. 11. 9. 오전 12:29에 Daniel Vetter 이(가) 쓴 글: > On Mon, Nov 08, 2021 at 11:28:44AM +0100, Thomas Zimmermann wrote: >> Moving the driver-specific mmap code into a GEM object function allows >> for using DRM helpers for various mmap callbacks. >> >> The respective exynos functions are being removed. The file_operations >> structure exynos_drm_driver_fops is now being created by the helper macro >> DEFINE_DRM_GEM_FOPS(). >> >> Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx> > > s/exynox/exynos in the subject. > > Patch lgtm, but would still be good if exynos maintainers would > ack/review/test it. But if you don't get anything within 2 weeks here's Sorry for late. Confirmed working well on Odroid board, and had a review. Applied. https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git/log/?h=exynos-drm-next Thanks, Inki Dae > my: > > Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx> > >> --- >> drivers/gpu/drm/exynos/exynos_drm_drv.c | 13 ++----- >> drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 20 ++--------- >> drivers/gpu/drm/exynos/exynos_drm_gem.c | 43 +++++------------------ >> drivers/gpu/drm/exynos/exynos_drm_gem.h | 5 --- >> 4 files changed, 13 insertions(+), 68 deletions(-) >> >> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c >> b/drivers/gpu/drm/exynos/exynos_drm_drv.c >> index d8f1cf4d6b69..9743b6b17447 100644 >> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c >> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c >> @@ -102,16 +102,7 @@ static const struct drm_ioctl_desc exynos_ioctls[] = { >> DRM_RENDER_ALLOW), >> }; >> >> -static const struct file_operations exynos_drm_driver_fops = { >> - .owner = THIS_MODULE, >> - .open = drm_open, >> - .mmap = exynos_drm_gem_mmap, >> - .poll = drm_poll, >> - .read = drm_read, >> - .unlocked_ioctl = drm_ioctl, >> - .compat_ioctl = drm_compat_ioctl, >> - .release = drm_release, >> -}; >> +DEFINE_DRM_GEM_FOPS(exynos_drm_driver_fops); >> >> static const struct drm_driver exynos_drm_driver = { >> .driver_features = DRIVER_MODESET | DRIVER_GEM >> @@ -124,7 +115,7 @@ static const struct drm_driver exynos_drm_driver = { >> .prime_fd_to_handle = drm_gem_prime_fd_to_handle, >> .gem_prime_import = exynos_drm_gem_prime_import, >> .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table, >> - .gem_prime_mmap = exynos_drm_gem_prime_mmap, >> + .gem_prime_mmap = drm_gem_prime_mmap, >> .ioctls = exynos_ioctls, >> .num_ioctls = ARRAY_SIZE(exynos_ioctls), >> .fops = &exynos_drm_driver_fops, >> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c >> b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c >> index 5147f5929be7..02c97b9ca926 100644 >> --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c >> +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c >> @@ -15,6 +15,7 @@ >> #include <drm/drm_crtc.h> >> #include <drm/drm_fb_helper.h> >> #include <drm/drm_fourcc.h> >> +#include <drm/drm_prime.h> >> #include <drm/drm_probe_helper.h> >> #include <drm/exynos_drm.h> >> >> @@ -39,25 +40,8 @@ static int exynos_drm_fb_mmap(struct fb_info *info, >> struct drm_fb_helper *helper = info->par; >> struct exynos_drm_fbdev *exynos_fbd = to_exynos_fbdev(helper); >> struct exynos_drm_gem *exynos_gem = exynos_fbd->exynos_gem; >> - unsigned long vm_size; >> - int ret; >> - >> - vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; >> - >> - vm_size = vma->vm_end - vma->vm_start; >> - >> - if (vm_size > exynos_gem->size) >> - return -EINVAL; >> >> - ret = dma_mmap_attrs(to_dma_dev(helper->dev), vma, exynos_gem->cookie, >> - exynos_gem->dma_addr, exynos_gem->size, >> - exynos_gem->dma_attrs); >> - if (ret < 0) { >> - DRM_DEV_ERROR(to_dma_dev(helper->dev), "failed to mmap.\n"); >> - return ret; >> - } >> - >> - return 0; >> + return drm_gem_prime_mmap(&exynos_gem->base, vma); >> } >> >> static const struct fb_ops exynos_drm_fb_ops = { >> diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c >> b/drivers/gpu/drm/exynos/exynos_drm_gem.c >> index 4396224227d1..c4b63902ee7a 100644 >> --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c >> +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c >> @@ -17,6 +17,8 @@ >> #include "exynos_drm_drv.h" >> #include "exynos_drm_gem.h" >> >> +static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct >> vm_area_struct *vma); >> + >> static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem, bool >> kvmap) >> { >> struct drm_device *dev = exynos_gem->base.dev; >> @@ -135,6 +137,7 @@ static const struct vm_operations_struct >> exynos_drm_gem_vm_ops = { >> static const struct drm_gem_object_funcs exynos_drm_gem_object_funcs = { >> .free = exynos_drm_gem_free_object, >> .get_sg_table = exynos_drm_gem_prime_get_sg_table, >> + .mmap = exynos_drm_gem_mmap, >> .vm_ops = &exynos_drm_gem_vm_ops, >> }; >> >> @@ -354,12 +357,16 @@ int exynos_drm_gem_dumb_create(struct drm_file >> *file_priv, >> return 0; >> } >> >> -static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj, >> - struct vm_area_struct *vma) >> +static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct >> vm_area_struct *vma) >> { >> struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj); >> int ret; >> >> + if (obj->import_attach) >> + return dma_buf_mmap(obj->dma_buf, vma, 0); >> + >> + vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; >> + >> DRM_DEV_DEBUG_KMS(to_dma_dev(obj->dev), "flags = 0x%x\n", >> exynos_gem->flags); >> >> @@ -385,26 +392,6 @@ static int exynos_drm_gem_mmap_obj(struct >> drm_gem_object *obj, >> return ret; >> } >> >> -int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) >> -{ >> - struct drm_gem_object *obj; >> - int ret; >> - >> - /* set vm_area_struct. */ >> - ret = drm_gem_mmap(filp, vma); >> - if (ret < 0) { >> - DRM_ERROR("failed to mmap.\n"); >> - return ret; >> - } >> - >> - obj = vma->vm_private_data; >> - >> - if (obj->import_attach) >> - return dma_buf_mmap(obj->dma_buf, vma, 0); >> - >> - return exynos_drm_gem_mmap_obj(obj, vma); >> -} >> - >> /* low-level interface prime helpers */ >> struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev, >> struct dma_buf *dma_buf) >> @@ -466,15 +453,3 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device >> *dev, >> exynos_gem->sgt = sgt; >> return &exynos_gem->base; >> } >> - >> -int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj, >> - struct vm_area_struct *vma) >> -{ >> - int ret; >> - >> - ret = drm_gem_mmap_obj(obj, obj->size, vma); >> - if (ret < 0) >> - return ret; >> - >> - return exynos_drm_gem_mmap_obj(obj, vma); >> -} >> diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h >> b/drivers/gpu/drm/exynos/exynos_drm_gem.h >> index a23272fb96fb..79d7e1a87419 100644 >> --- a/drivers/gpu/drm/exynos/exynos_drm_gem.h >> +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h >> @@ -96,9 +96,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv, >> struct drm_device *dev, >> struct drm_mode_create_dumb *args); >> >> -/* set vm_flags and we can change the vm attribute to other one at here. */ >> -int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); >> - >> /* low-level interface prime helpers */ >> struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev, >> struct dma_buf *dma_buf); >> @@ -107,7 +104,5 @@ struct drm_gem_object * >> exynos_drm_gem_prime_import_sg_table(struct drm_device *dev, >> struct dma_buf_attachment *attach, >> struct sg_table *sgt); >> -int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj, >> - struct vm_area_struct *vma); >> >> #endif >> -- >> 2.33.1 >> >
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