Add a few simple support functions to support a bitmask of
features that a specific MMU implementation supports. The
first feature will be per-instance pagetables coming in the
following patch.
Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/msm_mmu.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/msm/msm_mmu.h b/drivers/gpu/drm/msm/msm_mmu.h
index aa2c5d4580c8..85df78d71398 100644
--- a/drivers/gpu/drm/msm/msm_mmu.h
+++ b/drivers/gpu/drm/msm/msm_mmu.h
@@ -35,6 +35,7 @@ struct msm_mmu {
struct device *dev;
int (*handler)(void *arg, unsigned long iova, int flags);
void *arg;
+ unsigned long features;
};
static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
@@ -54,4 +55,16 @@ static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
mmu->handler = handler;
}
+static inline void msm_mmu_set_feature(struct msm_mmu *mmu,
+ unsigned long feature)
+{
+ mmu->features |= feature;
+}
+
+static inline bool msm_mmu_has_feature(struct msm_mmu *mmu,
+ unsigned long feature)
+{
+ return (mmu->features & feature) ? true : false;
+}
+
#endif /* __MSM_MMU_H__ */
--
2.17.0
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