From: Rob Clark <robdclark@xxxxxxxxxxxx>
Handle the demotion to MSM_BO_WC at the userspace ABI level, and fix
the remaining internal MSM_BO_UNCACHED user.
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
---
drivers/gpu/drm/msm/msm_drv.c | 13 +++++++++++++
drivers/gpu/drm/msm/msm_gem.c | 7 +++----
drivers/gpu/drm/msm/msm_gpu.c | 2 +-
3 files changed, 17 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 57a66093e671..acc940d32ab4 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -633,12 +633,25 @@ static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct drm_msm_gem_new *args = data;
+ uint32_t flags = args->flags;
if (args->flags & ~MSM_BO_FLAGS) {
DRM_ERROR("invalid flags: %08x\n", args->flags);
return -EINVAL;
}
+ /*
+ * Uncached CPU mappings are deprecated, as of:
+ *
+ * 9ef364432db4 ("drm/msm: deprecate MSM_BO_UNCACHED (map as writecombine instead)")
+ *
+ * So promote them to WC.
+ */
+ if (flags & MSM_BO_UNCACHED) {
+ flags &= ~MSM_BO_CACHED;
+ flags |= MSM_BO_WC;
+ }
+
return msm_gem_new_handle(dev, file, args->size,
args->flags, &args->handle, NULL);
}
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 9a73e48a3049..35845e273d81 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -129,7 +129,7 @@ static struct page **get_pages(struct drm_gem_object *obj)
/* For non-cached buffers, ensure the new pages are clean
* because display controller, GPU, etc. are not coherent:
*/
- if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED))
+ if (msm_obj->flags & MSM_BO_WC)
sync_for_device(msm_obj);
update_inactive(msm_obj);
@@ -160,7 +160,7 @@ static void put_pages(struct drm_gem_object *obj)
* pages are clean because display controller,
* GPU, etc. are not coherent:
*/
- if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED))
+ if (msm_obj->flags & MSM_BO_WC)
sync_for_cpu(msm_obj);
sg_free_table(msm_obj->sgt);
@@ -213,7 +213,7 @@ void msm_gem_put_pages(struct drm_gem_object *obj)
static pgprot_t msm_gem_pgprot(struct msm_gem_object *msm_obj, pgprot_t prot)
{
- if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED))
+ if (msm_obj->flags & MSM_BO_WC)
return pgprot_writecombine(prot);
return prot;
}
@@ -1122,7 +1122,6 @@ static int msm_gem_new_impl(struct drm_device *dev,
struct msm_gem_object *msm_obj;
switch (flags & MSM_BO_CACHE_MASK) {
- case MSM_BO_UNCACHED:
case MSM_BO_CACHED:
case MSM_BO_WC:
break;
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index f99292eaf529..e59a757578df 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -952,7 +952,7 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
memptrs = msm_gem_kernel_new(drm,
sizeof(struct msm_rbmemptrs) * nr_rings,
- check_apriv(gpu, MSM_BO_UNCACHED), gpu->aspace, &gpu->memptrs_bo,
+ check_apriv(gpu, MSM_BO_WC), gpu->aspace, &gpu->memptrs_bo,
&memptrs_iova);
if (IS_ERR(memptrs)) {
--
2.36.1
