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Two conditions should be met to use this HW: 1. AQE firmware should be loaded and programmed 2. Preemption support Expose a new MSM_PARAM to allow userspace to query its support. Signed-off-by: Akhil P Oommen Reviewed-by: Konrad Dybcio --- drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 13 +++++++++++++ drivers/gpu/drm/msm/adreno/adreno_gpu.c | 4 ++++ drivers/gpu/drm/msm/adreno/adreno_gpu.h | 1 + include/uapi/drm/msm_drm.h | 1 + 4 files changed, 19 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/ad= reno/a6xx_gpu.c index 44ce02b412ca..4d2f6c4d86e3 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c @@ -2604,6 +2604,17 @@ static int a6xx_set_supported_hw(struct device *dev,= struct a6xx_gpu *a6xx_gpu, return 0; } =20 +static bool a6xx_aqe_is_enabled(struct adreno_gpu *adreno_gpu) +{ + struct a6xx_gpu *a6xx_gpu =3D to_a6xx_gpu(adreno_gpu); + + /* + * AQE uses preemption context record as scratch pad, so check if + * preemption is enabled + */ + return (adreno_gpu->base.nr_rings > 1) && !!a6xx_gpu->aqe_bo; +} + static struct msm_gpu *a6xx_gpu_init(struct drm_device *dev) { struct msm_drm_private *priv =3D dev->dev_private; @@ -2802,6 +2813,7 @@ const struct adreno_gpu_funcs a7xx_gpu_funcs =3D { .bus_halt =3D a6xx_bus_clear_pending_transactions, .mmu_fault_handler =3D a6xx_fault_handler, .gx_is_on =3D a7xx_gmu_gx_is_on, + .aqe_is_enabled =3D a6xx_aqe_is_enabled, }; =20 const struct adreno_gpu_funcs a8xx_gpu_funcs =3D { @@ -2830,4 +2842,5 @@ const struct adreno_gpu_funcs a8xx_gpu_funcs =3D { .bus_halt =3D a8xx_bus_clear_pending_transactions, .mmu_fault_handler =3D a8xx_fault_handler, .gx_is_on =3D a8xx_gmu_gx_is_on, + .aqe_is_enabled =3D a6xx_aqe_is_enabled, }; diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/= adreno/adreno_gpu.c index f6c39aed50f2..78c348852b4b 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -444,6 +444,10 @@ int adreno_get_param(struct msm_gpu *gpu, struct msm_c= ontext *ctx, case MSM_PARAM_HAS_PRR: *value =3D adreno_smmu_has_prr(gpu); return 0; + case MSM_PARAM_AQE: + *value =3D !!(adreno_gpu->funcs->aqe_is_enabled && + adreno_gpu->funcs->aqe_is_enabled(adreno_gpu)); + return 0; default: return UERR(EINVAL, drm, "%s: invalid param: %u", gpu->name, param); } diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/= adreno/adreno_gpu.h index 044ed4d49aa7..c0ee544ce257 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h @@ -84,6 +84,7 @@ struct adreno_gpu_funcs { void (*bus_halt)(struct adreno_gpu *adreno_gpu, bool gx_off); int (*mmu_fault_handler)(void *arg, unsigned long iova, int flags, void *= data); bool (*gx_is_on)(struct adreno_gpu *adreno_gpu); + bool (*aqe_is_enabled)(struct adreno_gpu *adreno_gpu); }; =20 struct adreno_reglist { diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h index 5c67294edc95..b99098792371 100644 --- a/include/uapi/drm/msm_drm.h +++ b/include/uapi/drm/msm_drm.h @@ -117,6 +117,7 @@ struct drm_msm_timespec { * ioctl will throw -EPIPE. */ #define MSM_PARAM_EN_VM_BIND 0x16 /* WO, once */ +#define MSM_PARAM_AQE 0x17 /* RO */ =20 /* For backwards compat. The original support for preemption was based on * a single ring per priority level so # of priority levels equals the # --=20 2.51.0