diff options
Diffstat (limited to 'usr/src/uts/i86pc/io/cpudrv/cpudrv_amd.c')
| -rw-r--r-- | usr/src/uts/i86pc/io/cpudrv/cpudrv_amd.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/usr/src/uts/i86pc/io/cpudrv/cpudrv_amd.c b/usr/src/uts/i86pc/io/cpudrv/cpudrv_amd.c new file mode 100644 index 0000000000..21dd88980c --- /dev/null +++ b/usr/src/uts/i86pc/io/cpudrv/cpudrv_amd.c @@ -0,0 +1,51 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2008 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* + * AMD specific CPU power management support. + */ + +#include <sys/x86_archext.h> +#include <sys/cpudrv_mach.h> +#include <sys/cpu_acpi.h> +#include <sys/pwrnow.h> + +boolean_t +cpudrv_amd_init(cpudrv_devstate_t *cpudsp) +{ + cpudrv_mach_state_t *mach_state = cpudsp->mach_state; + + /* AMD? */ + if (x86_vendor != X86_VENDOR_AMD) + return (B_FALSE); + + /* + * If we support PowerNow! on this processor, then set the + * correct pstate_ops for the processor. + */ + mach_state->cpupm_pstate_ops = pwrnow_supported() ? &pwrnow_ops : NULL; + + return (B_TRUE); +} |