Depends on
https://patchwork.freedesktop.org/patch/290754/?series=57669=1 --
Rob and I have been talking about adding some more help for the
dma_map_sg() code in v3d_mmu.c (which panfrost has a similar version
of), but this already seems like a good cleanup.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/v3d/Kconfig | 1 +
drivers/gpu/drm/v3d/v3d_bo.c | 308 ++
drivers/gpu/drm/v3d/v3d_drv.c | 27 +--
drivers/gpu/drm/v3d/v3d_drv.h | 16 +-
drivers/gpu/drm/v3d/v3d_gem.c | 11 +-
drivers/gpu/drm/v3d/v3d_irq.c | 8 +-
drivers/gpu/drm/v3d/v3d_mmu.c | 34 +++-
7 files changed, 134 insertions(+), 271 deletions(-)
diff --git a/drivers/gpu/drm/v3d/Kconfig b/drivers/gpu/drm/v3d/Kconfig
index 1552bf552c94..75a74c45f109 100644
--- a/drivers/gpu/drm/v3d/Kconfig
+++ b/drivers/gpu/drm/v3d/Kconfig
@@ -5,6 +5,7 @@ config DRM_V3D
depends on COMMON_CLK
depends on MMU
select DRM_SCHED
+ select DRM_GEM_SHMEM_HELPER
help
Choose this option if you have a system that has a Broadcom
V3D 3.x or newer GPU, such as BCM7268.
diff --git a/drivers/gpu/drm/v3d/v3d_bo.c b/drivers/gpu/drm/v3d/v3d_bo.c
index dff38bf36c50..b631ade09853 100644
--- a/drivers/gpu/drm/v3d/v3d_bo.c
+++ b/drivers/gpu/drm/v3d/v3d_bo.c
@@ -25,158 +25,6 @@
#include "v3d_drv.h"
#include "uapi/drm/v3d_drm.h"
-/* Pins the shmem pages, fills in the .pages and .sgt fields of the BO, and
maps
- * it for DMA.
- */
-static int
-v3d_bo_get_pages(struct v3d_bo *bo)
-{
- struct drm_gem_object *obj = >base;
- struct drm_device *dev = obj->dev;
- int npages = obj->size >> PAGE_SHIFT;
- int ret = 0;
-
- mutex_lock(>lock);
- if (bo->pages_refcount++ != 0)
- goto unlock;
-
- if (!obj->import_attach) {
- bo->pages = drm_gem_get_pages(obj);
- if (IS_ERR(bo->pages)) {
- ret = PTR_ERR(bo->pages);
- goto unlock;
- }
-
- bo->sgt = drm_prime_pages_to_sg(bo->pages, npages);
- if (IS_ERR(bo->sgt)) {
- ret = PTR_ERR(bo->sgt);
- goto put_pages;
- }
-
- /* Map the pages for use by the GPU. */
- dma_map_sg(dev->dev, bo->sgt->sgl,
- bo->sgt->nents, DMA_BIDIRECTIONAL);
- } else {
- bo->pages = kcalloc(npages, sizeof(*bo->pages), GFP_KERNEL);
- if (!bo->pages)
- goto put_pages;
-
- drm_prime_sg_to_page_addr_arrays(bo->sgt, bo->pages,
-NULL, npages);
-
- /* Note that dma-bufs come in mapped. */
- }
-
- mutex_unlock(>lock);
-
- return 0;
-
-put_pages:
- drm_gem_put_pages(obj, bo->pages, true, true);
- bo->pages = NULL;
-unlock:
- bo->pages_refcount--;
- mutex_unlock(>lock);
- return ret;
-}
-
-static void
-v3d_bo_put_pages(struct v3d_bo *bo)
-{
- struct drm_gem_object *obj = >base;
-
- mutex_lock(>lock);
- if (--bo->pages_refcount == 0) {
- if (!obj->import_attach) {
- dma_unmap_sg(obj->dev->dev, bo->sgt->sgl,
-bo->sgt->nents, DMA_BIDIRECTIONAL);
- sg_free_table(bo->sgt);
- kfree(bo->sgt);
- drm_gem_put_pages(obj, bo->pages, true, true);
- } else {
- kfree(bo->pages);
- }
- }
- mutex_unlock(>lock);
-}
-
-static struct v3d_bo *v3d_bo_create_struct(struct drm_device *dev,
- size_t unaligned_size)
-{
- struct v3d_dev *v3d = to_v3d_dev(dev);
- struct drm_gem_object *obj;
- struct v3d_bo *bo;
- size_t size = roundup(unaligned_size, PAGE_SIZE);
- int ret;
-
- if (size == 0)
- return ERR_PTR(-EINVAL);
-
- bo = kzalloc(sizeof(*bo), GFP_KERNEL);
- if (!bo)
- return ERR_PTR(-ENOMEM);
- obj = >base;
-
- INIT_LIST_HEAD(>unref_head);
- mutex_init(>lock);
-
- ret = drm_gem_object_init(dev, obj, size);
- if (ret)
- goto free_bo;
-
- spin_lock(>mm_lock);
- ret = drm_mm_insert_node_generic(>mm, >node,
-obj->size >> PAGE_SHIFT,
-GMP_GRANULARITY >> PAGE_SHIFT, 0, 0);
- spin_unlock(>mm_lock);
- if (ret)
- goto free_obj;
-
- return bo;
-
-free_obj:
- drm_gem_object_release(obj);
-free_bo:
- kfree(bo);
- return ERR_PTR(ret);
-}
-
-struct v3d_bo *v3d_bo_create(struct drm_device *dev, struct drm_file
*file_priv,
-size_t unaligned_size)
-{
- struct v3d_dev *v3d = to_v3d_dev(dev);
- struct drm_gem_object *obj;
-
