-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
- */
-#include <errno.h>
-#include <string.h>
-
-#include <rte_log.h>
-
-#include "guest_channel.h"
-#include "channel_commands.h"
-#include "rte_power_kvm_vm.h"
-#include "power_common.h"
-
-#define FD_PATH "/dev/virtio-ports/virtio.serial.port.poweragent"
-
-static struct channel_packet pkt[CHANNEL_CMDS_MAX_VM_CHANNELS];
-
-
-int
-rte_power_kvm_vm_init(unsigned int lcore_id)
-{
- if (lcore_id >= CHANNEL_CMDS_MAX_VM_CHANNELS) {
- RTE_LOG(ERR, POWER, "Core(%u) is out of range 0...%d\n",
- lcore_id, CHANNEL_CMDS_MAX_VM_CHANNELS-1);
- return -1;
- }
- pkt[lcore_id].command = CPU_POWER;
- pkt[lcore_id].resource_id = lcore_id;
- return guest_channel_host_connect(FD_PATH, lcore_id);
-}
-
-int
-rte_power_kvm_vm_exit(unsigned int lcore_id)
-{
- guest_channel_host_disconnect(lcore_id);
- return 0;
-}
-
-uint32_t
-rte_power_kvm_vm_freqs(__attribute__((unused)) unsigned int lcore_id,
- __attribute__((unused)) uint32_t *freqs,
- __attribute__((unused)) uint32_t num)
-{
- RTE_LOG(ERR, POWER, "rte_power_freqs is not implemented "
- "for Virtual Machine Power Management\n");
- return -ENOTSUP;
-}
-
-uint32_t
-rte_power_kvm_vm_get_freq(__attribute__((unused)) unsigned int lcore_id)
-{
- RTE_LOG(ERR, POWER, "rte_power_get_freq is not implemented "
- "for Virtual Machine Power Management\n");
- return -ENOTSUP;
-}
-
-int
-rte_power_kvm_vm_set_freq(__attribute__((unused)) unsigned int lcore_id,
- __attribute__((unused)) uint32_t index)
-{
- RTE_LOG(ERR, POWER, "rte_power_set_freq is not implemented "
- "for Virtual Machine Power Management\n");
- return -ENOTSUP;
-}
-
-static inline int
-send_msg(unsigned int lcore_id, uint32_t scale_direction)
-{
- int ret;
-
- if (lcore_id >= CHANNEL_CMDS_MAX_VM_CHANNELS) {
- RTE_LOG(ERR, POWER, "Core(%u) is out of range 0...%d\n",
- lcore_id, CHANNEL_CMDS_MAX_VM_CHANNELS-1);
- return -1;
- }
- pkt[lcore_id].unit = scale_direction;
- ret = guest_channel_send_msg(&pkt[lcore_id], lcore_id);
- if (ret == 0)
- return 1;
- RTE_LOG(DEBUG, POWER, "Error sending message: %s\n",
- ret > 0 ? strerror(ret) : "channel not connected");
- return -1;
-}
-
-int
-rte_power_kvm_vm_freq_up(unsigned int lcore_id)
-{
- return send_msg(lcore_id, CPU_POWER_SCALE_UP);
-}
-
-int
-rte_power_kvm_vm_freq_down(unsigned int lcore_id)
-{
- return send_msg(lcore_id, CPU_POWER_SCALE_DOWN);
-}
-
-int
-rte_power_kvm_vm_freq_max(unsigned int lcore_id)
-{
- return send_msg(lcore_id, CPU_POWER_SCALE_MAX);
-}
-
-int
-rte_power_kvm_vm_freq_min(unsigned int lcore_id)
-{
- return send_msg(lcore_id, CPU_POWER_SCALE_MIN);
-}
-
-int
-rte_power_kvm_vm_turbo_status(__attribute__((unused)) unsigned int lcore_id)
-{
- RTE_LOG(ERR, POWER, "rte_power_turbo_status is not implemented for Virtual Machine Power Management\n");
- return -ENOTSUP;
-}
-
-int
-rte_power_kvm_vm_enable_turbo(unsigned int lcore_id)
-{
- return send_msg(lcore_id, CPU_POWER_ENABLE_TURBO);
-}
-
-int
-rte_power_kvm_vm_disable_turbo(unsigned int lcore_id)
-{
- return send_msg(lcore_id, CPU_POWER_DISABLE_TURBO);
-}