1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * AMD specific CPU power management support. 28 */ 29 30 #include <sys/x86_archext.h> 31 #include <sys/cpu_acpi.h> 32 #include <sys/pwrnow.h> 33 34 boolean_t 35 cpupm_amd_init(cpu_t *cp) 36 { 37 cpupm_mach_state_t *mach_state = 38 (cpupm_mach_state_t *)(cp->cpu_m.mcpu_pm_mach_state); 39 40 /* AMD or Hygon? */ 41 if (x86_vendor != X86_VENDOR_AMD && 42 x86_vendor != X86_VENDOR_HYGON) 43 return (B_FALSE); 44 45 /* 46 * If we support PowerNow! on this processor, then set the 47 * correct cma_ops for the processor. 48 */ 49 mach_state->ms_pstate.cma_ops = pwrnow_supported() ? 50 &pwrnow_ops : NULL; 51 52 return (B_TRUE); 53 } 54