[PATCH v3 05/10] drm/msm/gem: Drop PAGE_SHIFT for address space mm

Rob Clark
2022-04-06T21:52:08Z

Get rid of all the unnecessary conversion between address/size and page
offsets. It just confuses things.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 2 +-
drivers/gpu/drm/msm/msm_gem.c | 5 ++---
drivers/gpu/drm/msm/msm_gem.h | 4 ++--
drivers/gpu/drm/msm/msm_gem_vma.c | 16 ++++++++--------
4 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index 3e325e2a2b1b..9f76f5b15759 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -1172,7 +1172,7 @@ static int a6xx_gmu_memory_alloc(struct a6xx_gmu *gmu, struct a6xx_gmu_bo *bo,
return PTR_ERR(bo->obj);

ret = msm_gem_get_and_pin_iova_range(bo->obj, gmu->aspace, &bo->iova,
- range_start >> PAGE_SHIFT, range_end >> PAGE_SHIFT);
+ range_start, range_end);
if (ret) {
drm_gem_object_put(bo->obj);
return ret;
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index f96d1dc72021..f4b68bb28a4d 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -392,7 +392,7 @@ static int get_iova_locked(struct drm_gem_object *obj,
if (IS_ERR(vma))
return PTR_ERR(vma);

- ret = msm_gem_init_vma(aspace, vma, obj->size >> PAGE_SHIFT,
+ ret = msm_gem_init_vma(aspace, vma, obj->size,
range_start, range_end);
if (ret) {
del_vma(vma);
@@ -434,8 +434,7 @@ static int msm_gem_pin_iova(struct drm_gem_object *obj,
if (IS_ERR(pages))
return PTR_ERR(pages);

- ret = msm_gem_map_vma(aspace, vma, prot,
- msm_obj->sgt, obj->size >> PAGE_SHIFT);
+ ret = msm_gem_map_vma(aspace, vma, prot, msm_obj->sgt, obj->size);

if (!ret)
msm_obj->pin_count++;
diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h
index 1b7f0f0b88bf..090c3b1a6d9a 100644
--- a/drivers/gpu/drm/msm/msm_gem.h
+++ b/drivers/gpu/drm/msm/msm_gem.h
@@ -59,7 +59,7 @@ struct msm_gem_vma {
};

int msm_gem_init_vma(struct msm_gem_address_space *aspace,
- struct msm_gem_vma *vma, int npages,
+ struct msm_gem_vma *vma, int size,
u64 range_start, u64 range_end);
bool msm_gem_vma_inuse(struct msm_gem_vma *vma);
void msm_gem_purge_vma(struct msm_gem_address_space *aspace,
@@ -68,7 +68,7 @@ void msm_gem_unmap_vma(struct msm_gem_address_space *aspace,
struct msm_gem_vma *vma);
int msm_gem_map_vma(struct msm_gem_address_space *aspace,
struct msm_gem_vma *vma, int prot,
- struct sg_table *sgt, int npages);
+ struct sg_table *sgt, int size);
void msm_gem_close_vma(struct msm_gem_address_space *aspace,
struct msm_gem_vma *vma);

diff --git a/drivers/gpu/drm/msm/msm_gem_vma.c b/drivers/gpu/drm/msm/msm_gem_vma.c
index dc2ae097805e..4949899f1fc7 100644
--- a/drivers/gpu/drm/msm/msm_gem_vma.c
+++ b/drivers/gpu/drm/msm/msm_gem_vma.c
@@ -46,7 +46,7 @@ bool msm_gem_vma_inuse(struct msm_gem_vma *vma)
void msm_gem_purge_vma(struct msm_gem_address_space *aspace,
struct msm_gem_vma *vma)
{
- unsigned size = vma->node.size << PAGE_SHIFT;
+ unsigned size = vma->node.size;

/* Print a message if we try to purge a vma in use */
if (GEM_WARN_ON(msm_gem_vma_inuse(vma)))
@@ -73,9 +73,8 @@ void msm_gem_unmap_vma(struct msm_gem_address_space *aspace,
int
msm_gem_map_vma(struct msm_gem_address_space *aspace,
struct msm_gem_vma *vma, int prot,
- struct sg_table *sgt, int npages)
+ struct sg_table *sgt, int size)
{
- unsigned size = npages << PAGE_SHIFT;
int ret = 0;

if (GEM_WARN_ON(!vma->iova))
@@ -120,7 +119,7 @@ void msm_gem_close_vma(struct msm_gem_address_space *aspace,

/* Initialize a new vma and allocate an iova for it */
int msm_gem_init_vma(struct msm_gem_address_space *aspace,
- struct msm_gem_vma *vma, int npages,
+ struct msm_gem_vma *vma, int size,
u64 range_start, u64 range_end)
{
int ret;
@@ -129,14 +128,15 @@ int msm_gem_init_vma(struct msm_gem_address_space *aspace,
return -EBUSY;

spin_lock(&aspace->lock);
- ret = drm_mm_insert_node_in_range(&aspace->mm, &vma->node, npages, 0,
- 0, range_start, range_end, 0);
+ ret = drm_mm_insert_node_in_range(&aspace->mm, &vma->node,
+ size, PAGE_SIZE, 0,
+ range_start, range_end, 0);
spin_unlock(&aspace->lock);

if (ret)
return ret;

- vma->iova = vma->node.start << PAGE_SHIFT;
+ vma->iova = vma->node.start;
vma->mapped = false;

kref_get(&aspace->kref);
@@ -161,7 +161,7 @@ msm_gem_address_space_create(struct msm_mmu *mmu, const char *name,
aspace->name = name;
aspace->mmu = mmu;

- drm_mm_init(&aspace->mm, va_start >> PAGE_SHIFT, size >> PAGE_SHIFT);
+ drm_mm_init(&aspace->mm, va_start, size);

kref_init(&aspace->kref);

--
2.35.1