This function allows pinning iova to a specific page range (for a6xx GMU).
Signed-off-by: Jonathan Marek <jonat...@marek.ca>
---
drivers/gpu/drm/msm/msm_drv.h | 6 +++++-
drivers/gpu/drm/msm/msm_gem.c | 28 +++++++++++++++++++++-------
drivers/gpu/drm/msm/msm_gem_vma.c | 6 ++++--
3 files changed, 30 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 194d900a460e..966fd9068c94 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -236,7 +236,8 @@ int msm_crtc_enable_vblank(struct drm_crtc *crtc);
void msm_crtc_disable_vblank(struct drm_crtc *crtc);
int msm_gem_init_vma(struct msm_gem_address_space *aspace,
- struct msm_gem_vma *vma, int npages);
+ struct msm_gem_vma *vma, int npages,
+ u64 range_start, u64 range_end);
void msm_gem_purge_vma(struct msm_gem_address_space *aspace,
struct msm_gem_vma *vma);
void msm_gem_unmap_vma(struct msm_gem_address_space *aspace,
@@ -276,6 +277,9 @@ vm_fault_t msm_gem_fault(struct vm_fault *vmf);
uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj);
int msm_gem_get_iova(struct drm_gem_object *obj,
struct msm_gem_address_space *aspace, uint64_t *iova);
+int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj,
+ struct msm_gem_address_space *aspace, uint64_t *iova,
+ u64 range_start, u64 range_end);
int msm_gem_get_and_pin_iova(struct drm_gem_object *obj,
struct msm_gem_address_space *aspace, uint64_t *iova);
uint64_t msm_gem_iova(struct drm_gem_object *obj,
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 5a6a79fbc9d6..d8f56a34c117 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -389,7 +389,8 @@ put_iova(struct drm_gem_object *obj)
}
static int msm_gem_get_iova_locked(struct drm_gem_object *obj,
- struct msm_gem_address_space *aspace, uint64_t *iova)
+ struct msm_gem_address_space *aspace, uint64_t *iova,
+ u64 range_start, u64 range_end)
{
struct msm_gem_object *msm_obj = to_msm_bo(obj);
struct msm_gem_vma *vma;
@@ -404,7 +405,8 @@ static int msm_gem_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 >> PAGE_SHIFT,
+ range_start, range_end);
if (ret) {
del_vma(vma);
return ret;
@@ -443,9 +445,13 @@ static int msm_gem_pin_iova(struct drm_gem_object *obj,
msm_obj->sgt, obj->size >> PAGE_SHIFT);
}
-/* get iova and pin it. Should have a matching put */
-int msm_gem_get_and_pin_iova(struct drm_gem_object *obj,
- struct msm_gem_address_space *aspace, uint64_t *iova)
+/*
+ * get iova and pin it. Should have a matching put
+ * limits iova to specified range (in pages)
+ */
+int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj,
+ struct msm_gem_address_space *aspace, uint64_t *iova,
+ u64 range_start, u64 range_end)
{
struct msm_gem_object *msm_obj = to_msm_bo(obj);
u64 local;
@@ -453,7 +459,8 @@ int msm_gem_get_and_pin_iova(struct drm_gem_object *obj,
mutex_lock(&msm_obj->lock);
- ret = msm_gem_get_iova_locked(obj, aspace, &local);
+ ret = msm_gem_get_iova_locked(obj, aspace, &local,
+ range_start, range_end);
if (!ret)
ret = msm_gem_pin_iova(obj, aspace);
@@ -465,6 +472,13 @@ int msm_gem_get_and_pin_iova(struct drm_gem_object *obj,
return ret;
}
+/* get iova and pin it. Should have a matching put */
+int msm_gem_get_and_pin_iova(struct drm_gem_object *obj,
+ struct msm_gem_address_space *aspace, uint64_t *iova)
+{
+ return msm_gem_get_and_pin_iova_range(obj, aspace, iova, 0, U64_MAX);
+}
+
/*
* Get an iova but don't pin it. Doesn't need a put because iovas are currently
* valid for the life of the object
@@ -476,7 +490,7 @@ int msm_gem_get_iova(struct drm_gem_object *obj,
int ret;
mutex_lock(&msm_obj->lock);
- ret = msm_gem_get_iova_locked(obj, aspace, iova);
+ ret = msm_gem_get_iova_locked(obj, aspace, iova, 0, U64_MAX);
mutex_unlock(&msm_obj->lock);
return ret;
diff --git a/drivers/gpu/drm/msm/msm_gem_vma.c
b/drivers/gpu/drm/msm/msm_gem_vma.c
index 1af5354bcd46..407b7ab82818 100644
--- a/drivers/gpu/drm/msm/msm_gem_vma.c
+++ b/drivers/gpu/drm/msm/msm_gem_vma.c
@@ -103,7 +103,8 @@ 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 npages,
+ u64 range_start, u64 range_end)
{
int ret;
@@ -111,7 +112,8 @@ int msm_gem_init_vma(struct msm_gem_address_space *aspace,
return -EBUSY;
spin_lock(&aspace->lock);
- ret = drm_mm_insert_node(&aspace->mm, &vma->node, npages);
+ ret = drm_mm_insert_node_in_range(&aspace->mm, &vma->node, npages, 0,
+ 0, range_start, range_end, 0);
spin_unlock(&aspace->lock);
if (ret)
--
2.26.1
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