407 static void switch_mocs(struct intel_vgpu *pre, struct intel_vgpu *next,  in switch_mocs()  argument
428 	if (!pre && !gen9_render_mocs.initialized)  in switch_mocs()
433 		if (pre)  in switch_mocs()
434 			old_v = vgpu_vreg_t(pre, offset);  in switch_mocs()
451 			if (pre)  in switch_mocs()
452 				old_v = vgpu_vreg_t(pre, l3_offset);  in switch_mocs()
481 static void switch_mmio(struct intel_vgpu *pre,  in switch_mmio()  argument
491 		switch_mocs(pre, next, engine);  in switch_mmio()
506 		if (pre) {  in switch_mmio()
507 			vgpu_vreg_t(pre, mmio->reg) =  in switch_mmio()
510 				vgpu_vreg_t(pre, mmio->reg) &=  in switch_mmio()
512 			old_v = vgpu_vreg_t(pre, mmio->reg);  in switch_mmio()
546 		trace_render_mmio(pre ? pre->id : 0,  in switch_mmio()
559  * @pre: the last vGPU that own the engine
563  * If pre is null indicates that host own the engine. If next is null
566 void intel_gvt_switch_mmio(struct intel_vgpu *pre,  in intel_gvt_switch_mmio()  argument
570 	if (WARN(!pre && !next, "switch ring %s from host to HOST\n",  in intel_gvt_switch_mmio()
575 		       pre ? "vGPU" : "host", next ? "vGPU" : "HOST");  in intel_gvt_switch_mmio()
583 	switch_mmio(pre, next, engine);  in intel_gvt_switch_mmio()