power: packet format for vm power management

Provides a command packet format for host and guest. Signed-off-by: Alan Carew <alan.carew@intel.com> Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
2014-11-25 16:18:09 +00:00 · 2014-11-25 16:18:09 +00:00 · 210c383e24
commit 210c383e24
parent 445c6528b5
1 changed files with 77 additions and 0 deletions
--- a/lib/librte_power/channel_commands.h
+++ b/lib/librte_power/channel_commands.h
@ -0,0 +1,77 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CHANNEL_COMMANDS_H_
+#define CHANNEL_COMMANDS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+/* Maximum number of CPUs */
+#define CHANNEL_CMDS_MAX_CPUS        64
+#if CHANNEL_CMDS_MAX_CPUS > 64
+#error Maximum number of cores is 64, overflow is guaranteed to \
+	cause problems with VM Power Management
+#endif
+
+/* Maximum number of channels per VM */
+#define CHANNEL_CMDS_MAX_VM_CHANNELS 64
+
+/* Maximum number of channels per VM */
+#define CHANNEL_CMDS_MAX_VM_CHANNELS 64
+
+/* Valid Commands */
+#define CPU_POWER               1
+#define CPU_POWER_CONNECT       2
+
+/* CPU Power Command Scaling */
+#define CPU_POWER_SCALE_UP      1
+#define CPU_POWER_SCALE_DOWN    2
+#define CPU_POWER_SCALE_MAX     3
+#define CPU_POWER_SCALE_MIN     4
+
+struct channel_packet {
+	uint64_t resource_id; /**< core_num, device */
+	uint32_t unit;        /**< scale down/up/min/max */
+	uint32_t command;     /**< Power, IO, etc */
+};
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CHANNEL_COMMANDS_H_ */