For reasons that be, the HW only allows usersace to read its own CTX_TIMESTAMP [context local HW runtime] on rcs. Make it available for all by adding it to the whitelists. Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> --- This probably means the change occurred in the glk/cfl timeframe... --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 94d66a9d760d..7afe5792d68c 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -1253,9 +1253,15 @@ static void icl_whitelist_build(struct intel_engine_cs *engine) /* hucStatus2RegOffset */ whitelist_reg_ext(w, _MMIO(0x23B0 + engine->mmio_base), RING_FORCE_TO_NONPRIV_ACCESS_RD); + whitelist_reg_ext(w, + RING_CTX_TIMESTAMP(engine->mmio_base), + RING_FORCE_TO_NONPRIV_ACCESS_RD); break; default: + whitelist_reg_ext(w, + RING_CTX_TIMESTAMP(engine->mmio_base), + RING_FORCE_TO_NONPRIV_ACCESS_RD); break; } } @@ -1287,6 +1293,9 @@ static void tgl_whitelist_build(struct intel_engine_cs *engine) whitelist_reg(w, HIZ_CHICKEN); break; default: + whitelist_reg_ext(w, + RING_CTX_TIMESTAMP(engine->mmio_base), + RING_FORCE_TO_NONPRIV_ACCESS_RD); break; } } -- 2.20.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
