BCS_SWCTRL 2637 drivers/gpu/drm/i915/gvt/handlers.c MMIO_DFH(BCS_SWCTRL, D_ALL, F_CMD_ACCESS, NULL, NULL); BCS_SWCTRL 663 drivers/gpu/drm/i915/i915_cmd_parser.c REG32(BCS_SWCTRL), BCS_SWCTRL 670 drivers/gpu/drm/i915/i915_cmd_parser.c REG32(BCS_SWCTRL),