Commit dde2bb2d authored by Boris Brezillon's avatar Boris Brezillon Committed by Rob Herring

drm/panfrost: perfcnt: Reserve/use the AS attached to the perfcnt MMU context

We need to use the AS attached to the opened FD when dumping counters.
Reported-by: default avatarAntonio Caggiano <antonio.caggiano@collabora.com>
Fixes: 7282f764 ("drm/panfrost: Implement per FD address spaces")
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: default avatarSteven Price <steven.price@arm.com>
Tested-by: default avatarAntonio Caggiano <antonio.caggiano@collabora.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200206141327.446127-1-boris.brezillon@collabora.com
parent fe154a24
...@@ -151,7 +151,12 @@ u32 panfrost_mmu_as_get(struct panfrost_device *pfdev, struct panfrost_mmu *mmu) ...@@ -151,7 +151,12 @@ u32 panfrost_mmu_as_get(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)
as = mmu->as; as = mmu->as;
if (as >= 0) { if (as >= 0) {
int en = atomic_inc_return(&mmu->as_count); int en = atomic_inc_return(&mmu->as_count);
WARN_ON(en >= NUM_JOB_SLOTS);
/*
* AS can be retained by active jobs or a perfcnt context,
* hence the '+ 1' here.
*/
WARN_ON(en >= (NUM_JOB_SLOTS + 1));
list_move(&mmu->list, &pfdev->as_lru_list); list_move(&mmu->list, &pfdev->as_lru_list);
goto out; goto out;
......
...@@ -73,7 +73,7 @@ static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev, ...@@ -73,7 +73,7 @@ static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev,
struct panfrost_file_priv *user = file_priv->driver_priv; struct panfrost_file_priv *user = file_priv->driver_priv;
struct panfrost_perfcnt *perfcnt = pfdev->perfcnt; struct panfrost_perfcnt *perfcnt = pfdev->perfcnt;
struct drm_gem_shmem_object *bo; struct drm_gem_shmem_object *bo;
u32 cfg; u32 cfg, as;
int ret; int ret;
if (user == perfcnt->user) if (user == perfcnt->user)
...@@ -126,12 +126,8 @@ static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev, ...@@ -126,12 +126,8 @@ static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev,
perfcnt->user = user; perfcnt->user = user;
/* as = panfrost_mmu_as_get(pfdev, perfcnt->mapping->mmu);
* Always use address space 0 for now. cfg = GPU_PERFCNT_CFG_AS(as) |
* FIXME: this needs to be updated when we start using different
* address space.
*/
cfg = GPU_PERFCNT_CFG_AS(0) |
GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_MANUAL); GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_MANUAL);
/* /*
...@@ -195,6 +191,7 @@ static int panfrost_perfcnt_disable_locked(struct panfrost_device *pfdev, ...@@ -195,6 +191,7 @@ static int panfrost_perfcnt_disable_locked(struct panfrost_device *pfdev,
drm_gem_shmem_vunmap(&perfcnt->mapping->obj->base.base, perfcnt->buf); drm_gem_shmem_vunmap(&perfcnt->mapping->obj->base.base, perfcnt->buf);
perfcnt->buf = NULL; perfcnt->buf = NULL;
panfrost_gem_close(&perfcnt->mapping->obj->base.base, file_priv); panfrost_gem_close(&perfcnt->mapping->obj->base.base, file_priv);
panfrost_mmu_as_put(pfdev, perfcnt->mapping->mmu);
panfrost_gem_mapping_put(perfcnt->mapping); panfrost_gem_mapping_put(perfcnt->mapping);
perfcnt->mapping = NULL; perfcnt->mapping = NULL;
pm_runtime_mark_last_busy(pfdev->dev); pm_runtime_mark_last_busy(pfdev->dev);
......
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