Mesa (master): freedreno/drm: handle ancient kernels
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Mon May 18 19:19:28 UTC 2020
Module: Mesa
Branch: master
Commit: a6184eae3123840b1ff3d78e24454610e3013013
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a6184eae3123840b1ff3d78e24454610e3013013
Author: Rob Clark <robdclark at chromium.org>
Date: Sun May 17 16:16:43 2020 -0700
freedreno/drm: handle ancient kernels
Older kernels did not support `MSM_INFO_GET_IOVA`. But this is only
required for (a) clover (ie. `fd_set_global_binding()`) and drm paths
that are limited to newer kernels. So move the location of the assert
to fix new userspace on old kernels.
Fixes: c9e8df61dc8 ("freedreno: Initialize the bo's iova at creation time.")
Signed-off-by: Rob Clark <robdclark at chromium.org>
Tested-by: Ilia Mirkin <imirkin at alum.mit.edu>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5081>
---
src/freedreno/drm/freedreno_bo.c | 2 ++
src/freedreno/drm/msm_bo.c | 3 ++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/src/freedreno/drm/freedreno_bo.c b/src/freedreno/drm/freedreno_bo.c
index a4218cd8ffb..b6d5cdd9bec 100644
--- a/src/freedreno/drm/freedreno_bo.c
+++ b/src/freedreno/drm/freedreno_bo.c
@@ -236,6 +236,8 @@ fd_bo_mark_for_dump(struct fd_bo *bo)
uint64_t fd_bo_get_iova(struct fd_bo *bo)
{
+ /* ancient kernels did not support this */
+ assert(bo->iova != 0);
return bo->iova;
}
diff --git a/src/freedreno/drm/msm_bo.c b/src/freedreno/drm/msm_bo.c
index da2609903c1..7253a8cc7bd 100644
--- a/src/freedreno/drm/msm_bo.c
+++ b/src/freedreno/drm/msm_bo.c
@@ -112,7 +112,8 @@ static uint64_t msm_bo_iova(struct fd_bo *bo)
int ret;
ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_INFO, &req, sizeof(req));
- debug_assert(ret == 0);
+ if (ret)
+ return 0;
return req.value;
}
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