[PATCH v2 1/4] power: refactor core power management library

[Sivaprasad Tummala <sivaprasad.tummala@amd.com>]

This patch introduces a comprehensive refactor to the core power
management library. The primary focus is on improving modularity
and organization by relocating specific driver implementations
from the 'lib/power' directory to dedicated directories within
'drivers/power/core/*'. The adjustment of meson.build files
enables the selective activation of individual drivers.

These changes contribute to a significant enhancement in code
organization, providing a clearer structure for driver implementations.
The refactor aims to improve overall code clarity and boost
maintainability. Additionally, it establishes a foundation for
future development, allowing for more focused work on individual
drivers and seamless integration of forthcoming enhancements.

v2:
 - added NULL check for global_core_ops in rte_power_get_core_ops

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
---
 drivers/meson.build                           |   1 +
 .../power/acpi/acpi_cpufreq.c                 |  22 +-
 .../power/acpi/acpi_cpufreq.h                 |   6 +-
 drivers/power/acpi/meson.build                |  10 +
 .../power/amd_pstate/amd_pstate_cpufreq.c     |  24 +-
 .../power/amd_pstate/amd_pstate_cpufreq.h     |   8 +-
 drivers/power/amd_pstate/meson.build          |  10 +
 .../power/cppc/cppc_cpufreq.c                 |  22 +-
 .../power/cppc/cppc_cpufreq.h                 |   8 +-
 drivers/power/cppc/meson.build                |  10 +
 .../power/kvm_vm}/guest_channel.c             |   0
 .../power/kvm_vm}/guest_channel.h             |   0
 .../power/kvm_vm/kvm_vm.c                     |  22 +-
 .../power/kvm_vm/kvm_vm.h                     |   6 +-
 drivers/power/kvm_vm/meson.build              |  16 +
 drivers/power/meson.build                     |  12 +
 drivers/power/pstate/meson.build              |  10 +
 .../power/pstate/pstate_cpufreq.c             |  22 +-
 .../power/pstate/pstate_cpufreq.h             |   6 +-
 lib/power/meson.build                         |   7 +-
 lib/power/power_common.c                      |   2 +-
 lib/power/power_common.h                      |  16 +-
 lib/power/rte_power.c                         | 291 ++++++------------
 lib/power/rte_power.h                         | 139 ++++++---
 lib/power/rte_power_core_ops.h                | 208 +++++++++++++
 lib/power/version.map                         |  14 +
 26 files changed, 621 insertions(+), 271 deletions(-)
 rename lib/power/power_acpi_cpufreq.c => drivers/power/acpi/acpi_cpufreq.c (95%)
 rename lib/power/power_acpi_cpufreq.h => drivers/power/acpi/acpi_cpufreq.h (98%)
 create mode 100644 drivers/power/acpi/meson.build
 rename lib/power/power_amd_pstate_cpufreq.c => drivers/power/amd_pstate/amd_pstate_cpufreq.c (95%)
 rename lib/power/power_amd_pstate_cpufreq.h => drivers/power/amd_pstate/amd_pstate_cpufreq.h (97%)
 create mode 100644 drivers/power/amd_pstate/meson.build
 rename lib/power/power_cppc_cpufreq.c => drivers/power/cppc/cppc_cpufreq.c (95%)
 rename lib/power/power_cppc_cpufreq.h => drivers/power/cppc/cppc_cpufreq.h (97%)
 create mode 100644 drivers/power/cppc/meson.build
 rename {lib/power => drivers/power/kvm_vm}/guest_channel.c (100%)
 rename {lib/power => drivers/power/kvm_vm}/guest_channel.h (100%)
 rename lib/power/power_kvm_vm.c => drivers/power/kvm_vm/kvm_vm.c (82%)
 rename lib/power/power_kvm_vm.h => drivers/power/kvm_vm/kvm_vm.h (98%)
 create mode 100644 drivers/power/kvm_vm/meson.build
 create mode 100644 drivers/power/meson.build
 create mode 100644 drivers/power/pstate/meson.build
 rename lib/power/power_pstate_cpufreq.c => drivers/power/pstate/pstate_cpufreq.c (96%)
 rename lib/power/power_pstate_cpufreq.h => drivers/power/pstate/pstate_cpufreq.h (98%)
 create mode 100644 lib/power/rte_power_core_ops.h

diff --git a/drivers/meson.build b/drivers/meson.build
index 66931d4241..9d77e0deab 100644
--- a/drivers/meson.build
+++ b/drivers/meson.build
@@ -29,6 +29,7 @@ subdirs = [
         'event',          # depends on common, bus, mempool and net.
         'baseband',       # depends on common and bus.
         'gpu',            # depends on common and bus.
+        'power',          # depends on common (in future).
 ]
 
 if meson.is_cross_build()
diff --git a/lib/power/power_acpi_cpufreq.c b/drivers/power/acpi/acpi_cpufreq.c
similarity index 95%
rename from lib/power/power_acpi_cpufreq.c
rename to drivers/power/acpi/acpi_cpufreq.c
index 81996e1c13..8637c69703 100644
--- a/lib/power/power_acpi_cpufreq.c
+++ b/drivers/power/acpi/acpi_cpufreq.c
@@ -10,7 +10,7 @@
 #include <rte_stdatomic.h>
 #include <rte_string_fns.h>
 
-#include "power_acpi_cpufreq.h"
+#include "acpi_cpufreq.h"
 #include "power_common.h"
 
 #define STR_SIZE     1024
@@ -577,3 +577,23 @@ int power_acpi_get_capabilities(unsigned int lcore_id,
 
 	return 0;
 }
+
+static struct rte_power_core_ops acpi_ops = {
+	.name = "acpi",
+	.init = power_acpi_cpufreq_init,
+	.exit = power_acpi_cpufreq_exit,
+	.check_env_support = power_acpi_cpufreq_check_supported,
+	.get_avail_freqs = power_acpi_cpufreq_freqs,
+	.get_freq = power_acpi_cpufreq_get_freq,
+	.set_freq = power_acpi_cpufreq_set_freq,
+	.freq_down = power_acpi_cpufreq_freq_down,
+	.freq_up = power_acpi_cpufreq_freq_up,
+	.freq_max = power_acpi_cpufreq_freq_max,
+	.freq_min = power_acpi_cpufreq_freq_min,
+	.turbo_status = power_acpi_turbo_status,
+	.enable_turbo = power_acpi_enable_turbo,
+	.disable_turbo = power_acpi_disable_turbo,
+	.get_caps = power_acpi_get_capabilities
+};
+
+RTE_POWER_REGISTER_OPS(acpi_ops);
diff --git a/lib/power/power_acpi_cpufreq.h b/drivers/power/acpi/acpi_cpufreq.h
similarity index 98%
rename from lib/power/power_acpi_cpufreq.h
rename to drivers/power/acpi/acpi_cpufreq.h
index 682fd9278c..1194a7e2a5 100644
--- a/lib/power/power_acpi_cpufreq.h
+++ b/drivers/power/acpi/acpi_cpufreq.h
@@ -2,15 +2,15 @@
  * Copyright(c) 2010-2014 Intel Corporation
  */
 
-#ifndef _POWER_ACPI_CPUFREQ_H
-#define _POWER_ACPI_CPUFREQ_H
+#ifndef _ACPI_CPUFREQ_H
+#define _ACPI_CPUFREQ_H
 
 /**
  * @file
  * RTE Power Management via userspace ACPI cpufreq
  */
 
-#include "rte_power.h"
+#include "rte_power_core_ops.h"
 
 /**
  * Check if ACPI power management is supported.
diff --git a/drivers/power/acpi/meson.build b/drivers/power/acpi/meson.build
new file mode 100644
index 0000000000..f5afc893ce
--- /dev/null
+++ b/drivers/power/acpi/meson.build
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2024 Advanced Micro Devices, Inc.
+
+if not is_linux
+    build = false
+    reason = 'only supported on Linux'
+endif
+sources = files('acpi_cpufreq.c')
+
+deps += ['power']
diff --git a/lib/power/power_amd_pstate_cpufreq.c b/drivers/power/amd_pstate/amd_pstate_cpufreq.c
similarity index 95%
rename from lib/power/power_amd_pstate_cpufreq.c
rename to drivers/power/amd_pstate/amd_pstate_cpufreq.c
index 090a0d96cb..f571f4184a 100644
--- a/lib/power/power_amd_pstate_cpufreq.c
+++ b/drivers/power/amd_pstate/amd_pstate_cpufreq.c
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  * Copyright(c) 2010-2021 Intel Corporation
  * Copyright(c) 2021 Arm Limited
- * Copyright(c) 2023 Amd Limited
+ * Copyright(c) 2024 Advanced Micro Devices, Inc.
  */
 
 #include <stdlib.h>
@@ -9,7 +9,7 @@
 #include <rte_memcpy.h>
 #include <rte_stdatomic.h>
 
-#include "power_amd_pstate_cpufreq.h"
+#include "amd_pstate_cpufreq.h"
 #include "power_common.h"
 
 /* macros used for rounding frequency to nearest 1000 */
@@ -700,3 +700,23 @@ power_amd_pstate_get_capabilities(unsigned int lcore_id,
 
 	return 0;
 }
+
+static struct rte_power_core_ops amd_pstate_ops = {
+	.name = "amd-pstate",
+	.init = power_amd_pstate_cpufreq_init,
+	.exit = power_amd_pstate_cpufreq_exit,
+	.check_env_support = power_amd_pstate_cpufreq_check_supported,
+	.get_avail_freqs = power_amd_pstate_cpufreq_freqs,
+	.get_freq = power_amd_pstate_cpufreq_get_freq,
+	.set_freq = power_amd_pstate_cpufreq_set_freq,
+	.freq_down = power_amd_pstate_cpufreq_freq_down,
+	.freq_up = power_amd_pstate_cpufreq_freq_up,
+	.freq_max = power_amd_pstate_cpufreq_freq_max,
+	.freq_min = power_amd_pstate_cpufreq_freq_min,
+	.turbo_status = power_amd_pstate_turbo_status,
+	.enable_turbo = power_amd_pstate_enable_turbo,
+	.disable_turbo = power_amd_pstate_disable_turbo,
+	.get_caps = power_amd_pstate_get_capabilities
+};
+
+RTE_POWER_REGISTER_OPS(amd_pstate_ops);
diff --git a/lib/power/power_amd_pstate_cpufreq.h b/drivers/power/amd_pstate/amd_pstate_cpufreq.h
similarity index 97%
rename from lib/power/power_amd_pstate_cpufreq.h
rename to drivers/power/amd_pstate/amd_pstate_cpufreq.h
index b02f9f98e4..b04b2f28c0 100644
--- a/lib/power/power_amd_pstate_cpufreq.h
+++ b/drivers/power/amd_pstate/amd_pstate_cpufreq.h
@@ -1,18 +1,18 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  * Copyright(c) 2010-2021 Intel Corporation
  * Copyright(c) 2021 Arm Limited
- * Copyright(c) 2023 Amd Limited
+ * Copyright(c) 2024 Advanced Micro Devices, Inc.
  */
 
-#ifndef _POWER_AMD_PSTATE_CPUFREQ_H
-#define _POWER_AMD_PSTATE_CPUFREQ_H
+#ifndef _AMD_PSTATE_CPUFREQ_H
+#define _AMD_PSTATE_CPUFREQ_H
 
 /**
  * @file
  * RTE Power Management via userspace AMD pstate cpufreq
  */
 
-#include "rte_power.h"
+#include "rte_power_core_ops.h"
 
 /**
  * Check if amd p-state power management is supported.
diff --git a/drivers/power/amd_pstate/meson.build b/drivers/power/amd_pstate/meson.build
new file mode 100644
index 0000000000..acaf20b388
--- /dev/null
+++ b/drivers/power/amd_pstate/meson.build
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2024 Advanced Micro Devices, Inc.
+
+if not is_linux
+    build = false
+    reason = 'only supported on Linux'
+endif
+sources = files('amd_pstate_cpufreq.c')
+
+deps += ['power']
diff --git a/lib/power/power_cppc_cpufreq.c b/drivers/power/cppc/cppc_cpufreq.c
similarity index 95%
rename from lib/power/power_cppc_cpufreq.c
rename to drivers/power/cppc/cppc_cpufreq.c
index 32aaacb948..775b8f4434 100644
--- a/lib/power/power_cppc_cpufreq.c
+++ b/drivers/power/cppc/cppc_cpufreq.c
@@ -8,7 +8,7 @@
 #include <rte_memcpy.h>
 #include <rte_stdatomic.h>
 
-#include "power_cppc_cpufreq.h"
+#include "cppc_cpufreq.h"
 #include "power_common.h"
 
 /* macros used for rounding frequency to nearest 100000 */
@@ -685,3 +685,23 @@ power_cppc_get_capabilities(unsigned int lcore_id,
 
 	return 0;
 }
+
+static struct rte_power_core_ops cppc_ops = {
+	.name = "cppc",
+	.init = power_cppc_cpufreq_init,
+	.exit = power_cppc_cpufreq_exit,
+	.check_env_support = power_cppc_cpufreq_check_supported,
+	.get_avail_freqs = power_cppc_cpufreq_freqs,
+	.get_freq = power_cppc_cpufreq_get_freq,
+	.set_freq = power_cppc_cpufreq_set_freq,
+	.freq_down = power_cppc_cpufreq_freq_down,
+	.freq_up = power_cppc_cpufreq_freq_up,
+	.freq_max = power_cppc_cpufreq_freq_max,
+	.freq_min = power_cppc_cpufreq_freq_min,
+	.turbo_status = power_cppc_turbo_status,
+	.enable_turbo = power_cppc_enable_turbo,
+	.disable_turbo = power_cppc_disable_turbo,
+	.get_caps = power_cppc_get_capabilities
+};
+
+RTE_POWER_REGISTER_OPS(cppc_ops);
diff --git a/lib/power/power_cppc_cpufreq.h b/drivers/power/cppc/cppc_cpufreq.h
similarity index 97%
rename from lib/power/power_cppc_cpufreq.h
rename to drivers/power/cppc/cppc_cpufreq.h
index f4121b237e..d6e32fdd47 100644
--- a/lib/power/power_cppc_cpufreq.h
+++ b/drivers/power/cppc/cppc_cpufreq.h
@@ -3,15 +3,15 @@
  * Copyright(c) 2021 Arm Limited
  */
 
-#ifndef _POWER_CPPC_CPUFREQ_H
-#define _POWER_CPPC_CPUFREQ_H
+#ifndef _CPPC_CPUFREQ_H
+#define _CPPC_CPUFREQ_H
 
 /**
  * @file
  * RTE Power Management via userspace CPPC cpufreq
  */
 
-#include "rte_power.h"
+#include "rte_power_core_ops.h"
 
 /**
  * Check if CPPC power management is supported.
@@ -215,4 +215,4 @@ int power_cppc_disable_turbo(unsigned int lcore_id);
 int power_cppc_get_capabilities(unsigned int lcore_id,
 		struct rte_power_core_capabilities *caps);
 
-#endif /* _POWER_CPPC_CPUFREQ_H */
+#endif /* _CPPC_CPUFREQ_H */
diff --git a/drivers/power/cppc/meson.build b/drivers/power/cppc/meson.build
new file mode 100644
index 0000000000..f1948cd424
--- /dev/null
+++ b/drivers/power/cppc/meson.build
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2024 Advanced Micro Devices, Inc.
+
+if not is_linux
+    build = false
+    reason = 'only supported on Linux'
+endif
+sources = files('cppc_cpufreq.c')
+
+deps += ['power']
diff --git a/lib/power/guest_channel.c b/drivers/power/kvm_vm/guest_channel.c
similarity index 100%
rename from lib/power/guest_channel.c
rename to drivers/power/kvm_vm/guest_channel.c
diff --git a/lib/power/guest_channel.h b/drivers/power/kvm_vm/guest_channel.h
similarity index 100%
rename from lib/power/guest_channel.h
rename to drivers/power/kvm_vm/guest_channel.h
diff --git a/lib/power/power_kvm_vm.c b/drivers/power/kvm_vm/kvm_vm.c
similarity index 82%
rename from lib/power/power_kvm_vm.c
rename to drivers/power/kvm_vm/kvm_vm.c
index f15be8fac5..a1342dcd8b 100644
--- a/lib/power/power_kvm_vm.c
+++ b/drivers/power/kvm_vm/kvm_vm.c
@@ -9,7 +9,7 @@
 #include "rte_power_guest_channel.h"
 #include "guest_channel.h"
 #include "power_common.h"
-#include "power_kvm_vm.h"
+#include "kvm_vm.h"
 
 #define FD_PATH "/dev/virtio-ports/virtio.serial.port.poweragent"
 
@@ -137,3 +137,23 @@ int power_kvm_vm_get_capabilities(__rte_unused unsigned int lcore_id,
 	POWER_LOG(ERR, "rte_power_get_capabilities is not implemented for Virtual Machine Power Management");
 	return -ENOTSUP;
 }
+
+static struct rte_power_core_ops kvm_vm_ops = {
+	.name = "kvm-vm",
+	.init = power_kvm_vm_init,
+	.exit = power_kvm_vm_exit,
+	.check_env_support = power_kvm_vm_check_supported,
+	.get_avail_freqs = power_kvm_vm_freqs,
+	.get_freq = power_kvm_vm_get_freq,
+	.set_freq = power_kvm_vm_set_freq,
+	.freq_down = power_kvm_vm_freq_down,
+	.freq_up = power_kvm_vm_freq_up,
+	.freq_max = power_kvm_vm_freq_max,
+	.freq_min = power_kvm_vm_freq_min,
+	.turbo_status = power_kvm_vm_turbo_status,
+	.enable_turbo = power_kvm_vm_enable_turbo,
+	.disable_turbo = power_kvm_vm_disable_turbo,
+	.get_caps = power_kvm_vm_get_capabilities
+};
+
+RTE_POWER_REGISTER_OPS(kvm_vm_ops);
diff --git a/lib/power/power_kvm_vm.h b/drivers/power/kvm_vm/kvm_vm.h
similarity index 98%
rename from lib/power/power_kvm_vm.h
rename to drivers/power/kvm_vm/kvm_vm.h
index 303fcc041b..64086a67e7 100644
--- a/lib/power/power_kvm_vm.h
+++ b/drivers/power/kvm_vm/kvm_vm.h
@@ -2,15 +2,15 @@
  * Copyright(c) 2010-2014 Intel Corporation
  */
 
-#ifndef _POWER_KVM_VM_H
-#define _POWER_KVM_VM_H
+#ifndef _KVM_VM_H
+#define _KVM_VM_H
 
 /**
  * @file
  * RTE Power Management KVM VM
  */
 
-#include "rte_power.h"
+#include "rte_power_core_ops.h"
 
 /**
  * Check if KVM power management is supported.
diff --git a/drivers/power/kvm_vm/meson.build b/drivers/power/kvm_vm/meson.build
new file mode 100644
index 0000000000..405524ce7c
--- /dev/null
+++ b/drivers/power/kvm_vm/meson.build
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(C) 2024 Advanced Micro Devices, Inc.
+#
+
+if not is_linux
+    build = false
+    reason = 'only supported on Linux'
+    subdir_done()
+endif
+
+sources = files(
+        'guest_channel.c',
+        'kvm_vm.c',
+)
+
+deps += ['power']
diff --git a/drivers/power/meson.build b/drivers/power/meson.build
new file mode 100644
index 0000000000..8c7215c639
--- /dev/null
+++ b/drivers/power/meson.build
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2024 Advanced Micro Devices, Inc.
+
+drivers = [
+        'acpi',
+        'amd_pstate',
+        'cppc',
+        'kvm_vm',
+        'pstate'
+]
+
+std_deps = ['power']
diff --git a/drivers/power/pstate/meson.build b/drivers/power/pstate/meson.build
new file mode 100644
index 0000000000..9cd47833fb
--- /dev/null
+++ b/drivers/power/pstate/meson.build
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2024 Advanced Micro Devices, Inc.
+
+if not is_linux
+    build = false
+    reason = 'only supported on Linux'
+endif
+sources = files('pstate_cpufreq.c')
+
+deps += ['power']
diff --git a/lib/power/power_pstate_cpufreq.c b/drivers/power/pstate/pstate_cpufreq.c
similarity index 96%
rename from lib/power/power_pstate_cpufreq.c
rename to drivers/power/pstate/pstate_cpufreq.c
index 2343121621..c32b1adabc 100644
--- a/lib/power/power_pstate_cpufreq.c
+++ b/drivers/power/pstate/pstate_cpufreq.c
@@ -15,7 +15,7 @@
 #include <rte_stdatomic.h>
 
 #include "rte_power_pmd_mgmt.h"
-#include "power_pstate_cpufreq.h"
+#include "pstate_cpufreq.h"
 #include "power_common.h"
 
 /* macros used for rounding frequency to nearest 100000 */
@@ -888,3 +888,23 @@ int power_pstate_get_capabilities(unsigned int lcore_id,
 
 	return 0;
 }
+
+static struct rte_power_core_ops pstate_ops = {
+	.name = "pstate",
+	.init = power_pstate_cpufreq_init,
+	.exit = power_pstate_cpufreq_exit,
+	.check_env_support = power_pstate_cpufreq_check_supported,
+	.get_avail_freqs = power_pstate_cpufreq_freqs,
+	.get_freq = power_pstate_cpufreq_get_freq,
+	.set_freq = power_pstate_cpufreq_set_freq,
+	.freq_down = power_pstate_cpufreq_freq_down,
+	.freq_up = power_pstate_cpufreq_freq_up,
+	.freq_max = power_pstate_cpufreq_freq_max,
+	.freq_min = power_pstate_cpufreq_freq_min,
+	.turbo_status = power_pstate_turbo_status,
+	.enable_turbo = power_pstate_enable_turbo,
+	.disable_turbo = power_pstate_disable_turbo,
+	.get_caps = power_pstate_get_capabilities
+};
+
+RTE_POWER_REGISTER_OPS(pstate_ops);
diff --git a/lib/power/power_pstate_cpufreq.h b/drivers/power/pstate/pstate_cpufreq.h
similarity index 98%
rename from lib/power/power_pstate_cpufreq.h
rename to drivers/power/pstate/pstate_cpufreq.h
index 7bf64a518c..8b67b2da21 100644
--- a/lib/power/power_pstate_cpufreq.h
+++ b/drivers/power/pstate/pstate_cpufreq.h
@@ -2,15 +2,15 @@
  * Copyright(c) 2018 Intel Corporation
  */
 
-#ifndef _POWER_PSTATE_CPUFREQ_H
-#define _POWER_PSTATE_CPUFREQ_H
+#ifndef _PSTATE_CPUFREQ_H
+#define _PSTATE_CPUFREQ_H
 
 /**
  * @file
  * RTE Power Management via Intel Pstate driver
  */
 
-#include "rte_power.h"
+#include "rte_power_core_ops.h"
 
 /**
  * Check if pstate power management is supported.
diff --git a/lib/power/meson.build b/lib/power/meson.build
index b8426589b2..f3e3451cdc 100644
--- a/lib/power/meson.build
+++ b/lib/power/meson.build
@@ -12,20 +12,15 @@ if not is_linux
     reason = 'only supported on Linux'
 endif
 sources = files(
-        'guest_channel.c',
-        'power_acpi_cpufreq.c',
-        'power_amd_pstate_cpufreq.c',
         'power_common.c',
-        'power_cppc_cpufreq.c',
-        'power_kvm_vm.c',
         'power_intel_uncore.c',
-        'power_pstate_cpufreq.c',
         'rte_power.c',
         'rte_power_uncore.c',
         'rte_power_pmd_mgmt.c',
 )
 headers = files(
         'rte_power.h',
+        'rte_power_core_ops.h',
         'rte_power_guest_channel.h',
         'rte_power_pmd_mgmt.h',
         'rte_power_uncore.h',
diff --git a/lib/power/power_common.c b/lib/power/power_common.c
index 590986d5ef..6c06411e8b 100644
--- a/lib/power/power_common.c
+++ b/lib/power/power_common.c
@@ -12,7 +12,7 @@
 
 #include "power_common.h"
 
-RTE_LOG_REGISTER_DEFAULT(power_logtype, INFO);
+RTE_LOG_REGISTER_DEFAULT(rte_power_logtype, INFO);
 
 #define POWER_SYSFILE_SCALING_DRIVER   \
 		"/sys/devices/system/cpu/cpu%u/cpufreq/scaling_driver"
diff --git a/lib/power/power_common.h b/lib/power/power_common.h
index 83f742f42a..767686ee12 100644
--- a/lib/power/power_common.h
+++ b/lib/power/power_common.h
@@ -6,12 +6,13 @@
 #define _POWER_COMMON_H_
 
 #include <rte_common.h>
+#include <rte_compat.h>
 #include <rte_log.h>
 
 #define RTE_POWER_INVALID_FREQ_INDEX (~0)
 
-extern int power_logtype;
-#define RTE_LOGTYPE_POWER power_logtype
+extern int rte_power_logtype;
+#define RTE_LOGTYPE_POWER rte_power_logtype
 #define POWER_LOG(level, ...) \
 	RTE_LOG_LINE(level, POWER, "" __VA_ARGS__)
 
@@ -23,13 +24,24 @@ extern int power_logtype;
 #endif
 
 /* check if scaling driver matches one we want */
+__rte_internal
 int cpufreq_check_scaling_driver(const char *driver);
+
+__rte_internal
 int power_set_governor(unsigned int lcore_id, const char *new_governor,
 		char *orig_governor, size_t orig_governor_len);
+
+__rte_internal
 int open_core_sysfs_file(FILE **f, const char *mode, const char *format, ...)
 		__rte_format_printf(3, 4);
+
+__rte_internal
 int read_core_sysfs_u32(FILE *f, uint32_t *val);
+
+__rte_internal
 int read_core_sysfs_s(FILE *f, char *buf, unsigned int len);
+
+__rte_internal
 int write_core_sysfs_s(FILE *f, const char *str);
 
 #endif /* _POWER_COMMON_H_ */
diff --git a/lib/power/rte_power.c b/lib/power/rte_power.c
index 36c3f3da98..2bf6d40517 100644
--- a/lib/power/rte_power.c
+++ b/lib/power/rte_power.c
@@ -8,153 +8,86 @@
 #include <rte_spinlock.h>
 
 #include "rte_power.h"
-#include "power_acpi_cpufreq.h"
-#include "power_cppc_cpufreq.h"
 #include "power_common.h"
-#include "power_kvm_vm.h"
-#include "power_pstate_cpufreq.h"
-#include "power_amd_pstate_cpufreq.h"
 
-enum power_management_env global_default_env = PM_ENV_NOT_SET;
+static enum power_management_env global_default_env = PM_ENV_NOT_SET;
+static struct rte_power_core_ops *global_power_core_ops;
 
 static rte_spinlock_t global_env_cfg_lock = RTE_SPINLOCK_INITIALIZER;
+static RTE_TAILQ_HEAD(, rte_power_core_ops) core_ops_list =
+			TAILQ_HEAD_INITIALIZER(core_ops_list);
 
-/* function pointers */
-rte_power_freqs_t rte_power_freqs  = NULL;
-rte_power_get_freq_t rte_power_get_freq = NULL;
-rte_power_set_freq_t rte_power_set_freq = NULL;
-rte_power_freq_change_t rte_power_freq_up = NULL;
-rte_power_freq_change_t rte_power_freq_down = NULL;
-rte_power_freq_change_t rte_power_freq_max = NULL;
-rte_power_freq_change_t rte_power_freq_min = NULL;
-rte_power_freq_change_t rte_power_turbo_status;
-rte_power_freq_change_t rte_power_freq_enable_turbo;
-rte_power_freq_change_t rte_power_freq_disable_turbo;
-rte_power_get_capabilities_t rte_power_get_capabilities;
-
-static void
-reset_power_function_ptrs(void)
+
+const char *power_env_str[] = {
+	"not set",
+	"acpi",
+	"kvm-vm",
+	"pstate",
+	"cppc",
+	"amd-pstate"
+};
+
+/* register the ops struct in rte_power_core_ops, return 0 on success. */
+int
+rte_power_register_ops(struct rte_power_core_ops *driver_ops)
 {
-	rte_power_freqs  = NULL;
-	rte_power_get_freq = NULL;
-	rte_power_set_freq = NULL;
-	rte_power_freq_up = NULL;
-	rte_power_freq_down = NULL;
-	rte_power_freq_max = NULL;
-	rte_power_freq_min = NULL;
-	rte_power_turbo_status = NULL;
-	rte_power_freq_enable_turbo = NULL;
-	rte_power_freq_disable_turbo = NULL;
-	rte_power_get_capabilities = NULL;
+	if (!driver_ops->init || !driver_ops->exit ||
+		!driver_ops->check_env_support || !driver_ops->get_avail_freqs ||
+		!driver_ops->get_freq || !driver_ops->set_freq ||
+		!driver_ops->freq_up || !driver_ops->freq_down ||
+		!driver_ops->freq_max || !driver_ops->freq_min ||
+		!driver_ops->turbo_status || !driver_ops->enable_turbo ||
+		!driver_ops->disable_turbo || !driver_ops->get_caps) {
+		POWER_LOG(ERR, "Missing callbacks while registering power ops");
+		return -EINVAL;
+	}
+
+	TAILQ_INSERT_TAIL(&core_ops_list, driver_ops, next);
+
+	return 0;
 }
 
 int
 rte_power_check_env_supported(enum power_management_env env)
 {
-	switch (env) {
-	case PM_ENV_ACPI_CPUFREQ:
-		return power_acpi_cpufreq_check_supported();
-	case PM_ENV_PSTATE_CPUFREQ:
-		return power_pstate_cpufreq_check_supported();
-	case PM_ENV_KVM_VM:
-		return power_kvm_vm_check_supported();
-	case PM_ENV_CPPC_CPUFREQ:
-		return power_cppc_cpufreq_check_supported();
-	case PM_ENV_AMD_PSTATE_CPUFREQ:
-		return power_amd_pstate_cpufreq_check_supported();
-	default:
-		rte_errno = EINVAL;
-		return -1;
-	}
+	struct rte_power_core_ops *ops;
+
+	if (env >= RTE_DIM(power_env_str))
+		return 0;
+
+	RTE_TAILQ_FOREACH(ops, &core_ops_list, next)
+		if (strncmp(ops->name, power_env_str[env],
+				RTE_POWER_DRIVER_NAMESZ) == 0)
+			return ops->check_env_support();
+
+	return 0;
 }
 
 int
 rte_power_set_env(enum power_management_env env)
 {
+	struct rte_power_core_ops *ops;
+	int ret = -1;
+
 	rte_spinlock_lock(&global_env_cfg_lock);
 
 	if (global_default_env != PM_ENV_NOT_SET) {
 		POWER_LOG(ERR, "Power Management Environment already set.");
-		rte_spinlock_unlock(&global_env_cfg_lock);
-		return -1;
-	}
-
-	int ret = 0;
-
-	if (env == PM_ENV_ACPI_CPUFREQ) {
-		rte_power_freqs = power_acpi_cpufreq_freqs;
-		rte_power_get_freq = power_acpi_cpufreq_get_freq;
-		rte_power_set_freq = power_acpi_cpufreq_set_freq;
-		rte_power_freq_up = power_acpi_cpufreq_freq_up;
-		rte_power_freq_down = power_acpi_cpufreq_freq_down;
-		rte_power_freq_min = power_acpi_cpufreq_freq_min;
-		rte_power_freq_max = power_acpi_cpufreq_freq_max;
-		rte_power_turbo_status = power_acpi_turbo_status;
-		rte_power_freq_enable_turbo = power_acpi_enable_turbo;
-		rte_power_freq_disable_turbo = power_acpi_disable_turbo;
-		rte_power_get_capabilities = power_acpi_get_capabilities;
-	} else if (env == PM_ENV_KVM_VM) {
-		rte_power_freqs = power_kvm_vm_freqs;
-		rte_power_get_freq = power_kvm_vm_get_freq;
-		rte_power_set_freq = power_kvm_vm_set_freq;
-		rte_power_freq_up = power_kvm_vm_freq_up;
-		rte_power_freq_down = power_kvm_vm_freq_down;
-		rte_power_freq_min = power_kvm_vm_freq_min;
-		rte_power_freq_max = power_kvm_vm_freq_max;
-		rte_power_turbo_status = power_kvm_vm_turbo_status;
-		rte_power_freq_enable_turbo = power_kvm_vm_enable_turbo;
-		rte_power_freq_disable_turbo = power_kvm_vm_disable_turbo;
-		rte_power_get_capabilities = power_kvm_vm_get_capabilities;
-	} else if (env == PM_ENV_PSTATE_CPUFREQ) {
-		rte_power_freqs = power_pstate_cpufreq_freqs;
-		rte_power_get_freq = power_pstate_cpufreq_get_freq;
-		rte_power_set_freq = power_pstate_cpufreq_set_freq;
-		rte_power_freq_up = power_pstate_cpufreq_freq_up;
-		rte_power_freq_down = power_pstate_cpufreq_freq_down;
-		rte_power_freq_min = power_pstate_cpufreq_freq_min;
-		rte_power_freq_max = power_pstate_cpufreq_freq_max;
-		rte_power_turbo_status = power_pstate_turbo_status;
-		rte_power_freq_enable_turbo = power_pstate_enable_turbo;
-		rte_power_freq_disable_turbo = power_pstate_disable_turbo;
-		rte_power_get_capabilities = power_pstate_get_capabilities;
-
-	} else if (env == PM_ENV_CPPC_CPUFREQ) {
-		rte_power_freqs = power_cppc_cpufreq_freqs;
-		rte_power_get_freq = power_cppc_cpufreq_get_freq;
-		rte_power_set_freq = power_cppc_cpufreq_set_freq;
-		rte_power_freq_up = power_cppc_cpufreq_freq_up;
-		rte_power_freq_down = power_cppc_cpufreq_freq_down;
-		rte_power_freq_min = power_cppc_cpufreq_freq_min;
-		rte_power_freq_max = power_cppc_cpufreq_freq_max;
-		rte_power_turbo_status = power_cppc_turbo_status;
-		rte_power_freq_enable_turbo = power_cppc_enable_turbo;
-		rte_power_freq_disable_turbo = power_cppc_disable_turbo;
-		rte_power_get_capabilities = power_cppc_get_capabilities;
-	} else if (env == PM_ENV_AMD_PSTATE_CPUFREQ) {
-		rte_power_freqs = power_amd_pstate_cpufreq_freqs;
-		rte_power_get_freq = power_amd_pstate_cpufreq_get_freq;
-		rte_power_set_freq = power_amd_pstate_cpufreq_set_freq;
-		rte_power_freq_up = power_amd_pstate_cpufreq_freq_up;
-		rte_power_freq_down = power_amd_pstate_cpufreq_freq_down;
-		rte_power_freq_min = power_amd_pstate_cpufreq_freq_min;
-		rte_power_freq_max = power_amd_pstate_cpufreq_freq_max;
-		rte_power_turbo_status = power_amd_pstate_turbo_status;
-		rte_power_freq_enable_turbo = power_amd_pstate_enable_turbo;
-		rte_power_freq_disable_turbo = power_amd_pstate_disable_turbo;
-		rte_power_get_capabilities = power_amd_pstate_get_capabilities;
-	} else {
-		POWER_LOG(ERR, "Invalid Power Management Environment(%d) set",
-				env);
-		ret = -1;
+		goto out;
 	}
 
-	if (ret == 0)
-		global_default_env = env;
-	else {
-		global_default_env = PM_ENV_NOT_SET;
-		reset_power_function_ptrs();
-	}
+	RTE_TAILQ_FOREACH(ops, &core_ops_list, next)
+		if (strncmp(ops->name, power_env_str[env],
+				RTE_POWER_DRIVER_NAMESZ) == 0) {
+			global_power_core_ops = ops;
+			global_default_env = env;
+			ret = 0;
+			goto out;
+		}
+	POWER_LOG(ERR, "Invalid Power Management Environment(%d) set",
+			env);
 
+out:
 	rte_spinlock_unlock(&global_env_cfg_lock);
 	return ret;
 }
@@ -164,94 +97,66 @@ rte_power_unset_env(void)
 {
 	rte_spinlock_lock(&global_env_cfg_lock);
 	global_default_env = PM_ENV_NOT_SET;
-	reset_power_function_ptrs();
+	global_power_core_ops = NULL;
 	rte_spinlock_unlock(&global_env_cfg_lock);
 }
 
 enum power_management_env
-rte_power_get_env(void) {
+rte_power_get_env(void)
+{
 	return global_default_env;
 }
 
-int
-rte_power_init(unsigned int lcore_id)
+struct rte_power_core_ops *
+rte_power_get_core_ops(void)
 {
-	int ret = -1;
+	RTE_ASSERT(global_power_core_ops != NULL);
 
-	switch (global_default_env) {
-	case PM_ENV_ACPI_CPUFREQ:
-		return power_acpi_cpufreq_init(lcore_id);
-	case PM_ENV_KVM_VM:
-		return power_kvm_vm_init(lcore_id);
-	case PM_ENV_PSTATE_CPUFREQ:
-		return power_pstate_cpufreq_init(lcore_id);
-	case PM_ENV_CPPC_CPUFREQ:
-		return power_cppc_cpufreq_init(lcore_id);
-	case PM_ENV_AMD_PSTATE_CPUFREQ:
-		return power_amd_pstate_cpufreq_init(lcore_id);
-	default:
-		POWER_LOG(INFO, "Env isn't set yet!");
-	}
+	return global_power_core_ops;
+}
 
-	/* Auto detect Environment */
-	POWER_LOG(INFO, "Attempting to initialise ACPI cpufreq power management...");
-	ret = power_acpi_cpufreq_init(lcore_id);
-	if (ret == 0) {
-		rte_power_set_env(PM_ENV_ACPI_CPUFREQ);
-		goto out;
-	}
+int
+rte_power_init(unsigned int lcore_id)
+{
+	struct rte_power_core_ops *ops;
+	uint8_t env;
 
-	POWER_LOG(INFO, "Attempting to initialise PSTAT power management...");
-	ret = power_pstate_cpufreq_init(lcore_id);
-	if (ret == 0) {
-		rte_power_set_env(PM_ENV_PSTATE_CPUFREQ);
-		goto out;
-	}
+	if (global_default_env != PM_ENV_NOT_SET)
+		return global_power_core_ops->init(lcore_id);
 
-	POWER_LOG(INFO, "Attempting to initialise AMD PSTATE power management...");
-	ret = power_amd_pstate_cpufreq_init(lcore_id);
-	if (ret == 0) {
-		rte_power_set_env(PM_ENV_AMD_PSTATE_CPUFREQ);
-		goto out;
-	}
+	POWER_LOG(INFO, "Env isn't set yet!");
 
-	POWER_LOG(INFO, "Attempting to initialise CPPC power management...");
-	ret = power_cppc_cpufreq_init(lcore_id);
-	if (ret == 0) {
-		rte_power_set_env(PM_ENV_CPPC_CPUFREQ);
-		goto out;
-	}
+	/* Auto detect Environment */
+	RTE_TAILQ_FOREACH(ops, &core_ops_list, next)
+		if (ops) {
+			POWER_LOG(INFO,
+				"Attempting to initialise %s cpufreq power management...",
+				ops->name);
+			if (ops->init(lcore_id) == 0) {
+				for (env = 0; env < RTE_DIM(power_env_str); env++)
+					if (strncmp(ops->name, power_env_str[env],
+							RTE_POWER_DRIVER_NAMESZ) == 0) {
+						rte_power_set_env(env);
+						return 0;
+					}
+			}
+		}
+
+	POWER_LOG(ERR,
+		"Unable to set Power Management Environment for lcore %u",
+		lcore_id);
 
-	POWER_LOG(INFO, "Attempting to initialise VM power management...");
-	ret = power_kvm_vm_init(lcore_id);
-	if (ret == 0) {
-		rte_power_set_env(PM_ENV_KVM_VM);
-		goto out;
-	}
-	POWER_LOG(ERR, "Unable to set Power Management Environment for lcore "
-			"%u", lcore_id);
-out:
-	return ret;
+	return -1;
 }
 
 int
 rte_power_exit(unsigned int lcore_id)
 {
-	switch (global_default_env) {
-	case PM_ENV_ACPI_CPUFREQ:
-		return power_acpi_cpufreq_exit(lcore_id);
-	case PM_ENV_KVM_VM:
-		return power_kvm_vm_exit(lcore_id);
-	case PM_ENV_PSTATE_CPUFREQ:
-		return power_pstate_cpufreq_exit(lcore_id);
-	case PM_ENV_CPPC_CPUFREQ:
-		return power_cppc_cpufreq_exit(lcore_id);
-	case PM_ENV_AMD_PSTATE_CPUFREQ:
-		return power_amd_pstate_cpufreq_exit(lcore_id);
-	default:
-		POWER_LOG(ERR, "Environment has not been set, unable to exit gracefully");
+	if (global_default_env != PM_ENV_NOT_SET)
+		return global_power_core_ops->exit(lcore_id);
 
-	}
-	return -1;
+	POWER_LOG(ERR,
+		"Environment has not been set, unable to exit gracefully");
 
+	return -1;
 }
diff --git a/lib/power/rte_power.h b/lib/power/rte_power.h
index 4fa4afe399..5e4aacf08b 100644
--- a/lib/power/rte_power.h
+++ b/lib/power/rte_power.h
@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  * Copyright(c) 2010-2014 Intel Corporation
+ * Copyright(c) 2024 Advanced Micro Devices, Inc.
  */
 
 #ifndef _RTE_POWER_H
@@ -14,14 +15,21 @@
 #include <rte_log.h>
 #include <rte_power_guest_channel.h>
 
+#include "rte_power_core_ops.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /* Power Management Environment State */
-enum power_management_env {PM_ENV_NOT_SET, PM_ENV_ACPI_CPUFREQ, PM_ENV_KVM_VM,
-		PM_ENV_PSTATE_CPUFREQ, PM_ENV_CPPC_CPUFREQ,
-		PM_ENV_AMD_PSTATE_CPUFREQ};
+enum power_management_env {
+	PM_ENV_NOT_SET = 0,
+	PM_ENV_ACPI_CPUFREQ,
+	PM_ENV_KVM_VM,
+	PM_ENV_PSTATE_CPUFREQ,
+	PM_ENV_CPPC_CPUFREQ,
+	PM_ENV_AMD_PSTATE_CPUFREQ
+};
 
 /**
  * Check if a specific power management environment type is supported on a
@@ -66,6 +74,15 @@ void rte_power_unset_env(void);
  */
 enum power_management_env rte_power_get_env(void);
 
+/**
+ * @internal Get the power ops struct from its index.
+ *
+ * @return
+ *   The pointer to the ops struct in the table if registered.
+ */
+struct rte_power_core_ops *
+rte_power_get_core_ops(void);
+
 /**
  * Initialize power management for a specific lcore. If rte_power_set_env() has
  * not been called then an auto-detect of the environment will start and
@@ -108,10 +125,13 @@ int rte_power_exit(unsigned int lcore_id);
  * @return
  *  The number of available frequencies.
  */
-typedef uint32_t (*rte_power_freqs_t)(unsigned int lcore_id, uint32_t *freqs,
-		uint32_t num);
+static inline uint32_t
+rte_power_freqs(unsigned int lcore_id, uint32_t *freqs, uint32_t n)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
 
-extern rte_power_freqs_t rte_power_freqs;
+	return ops->get_avail_freqs(lcore_id, freqs, n);
+}
 
 /**
  * Return the current index of available frequencies of a specific lcore.
@@ -124,9 +144,13 @@ extern rte_power_freqs_t rte_power_freqs;
  * @return
  *  The current index of available frequencies.
  */
-typedef uint32_t (*rte_power_get_freq_t)(unsigned int lcore_id);
+static inline uint32_t
+rte_power_get_freq(unsigned int lcore_id)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
 
-extern rte_power_get_freq_t rte_power_get_freq;
+	return ops->get_freq(lcore_id);
+}
 
 /**
  * Set the new frequency for a specific lcore by indicating the index of
@@ -144,82 +168,101 @@ extern rte_power_get_freq_t rte_power_get_freq;
  *  - 0 on success without frequency changed.
  *  - Negative on error.
  */
-typedef int (*rte_power_set_freq_t)(unsigned int lcore_id, uint32_t index);
-
-extern rte_power_set_freq_t rte_power_set_freq;
+static inline uint32_t
+rte_power_set_freq(unsigned int lcore_id, uint32_t index)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
 
-/**
- * Function pointer definition for generic frequency change functions. Review
- * each environments specific documentation for usage.
- *
- * @param lcore_id
- *  lcore id.
- *
- * @return
- *  - 1 on success with frequency changed.
- *  - 0 on success without frequency changed.
- *  - Negative on error.
- */
-typedef int (*rte_power_freq_change_t)(unsigned int lcore_id);
+	return ops->set_freq(lcore_id, index);
+}
 
 /**
  * Scale up the frequency of a specific lcore according to the available
  * frequencies.
  * Review each environments specific documentation for usage.
  */
-extern rte_power_freq_change_t rte_power_freq_up;
+static inline int
+rte_power_freq_up(unsigned int lcore_id)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
+
+	return ops->freq_up(lcore_id);
+}
 
 /**
  * Scale down the frequency of a specific lcore according to the available
  * frequencies.
  * Review each environments specific documentation for usage.
  */
-extern rte_power_freq_change_t rte_power_freq_down;
+static inline int
+rte_power_freq_down(unsigned int lcore_id)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
+
+	return ops->freq_down(lcore_id);
+}
 
 /**
  * Scale up the frequency of a specific lcore to the highest according to the
  * available frequencies.
  * Review each environments specific documentation for usage.
  */
-extern rte_power_freq_change_t rte_power_freq_max;
+static inline int
+rte_power_freq_max(unsigned int lcore_id)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
+
+	return ops->freq_max(lcore_id);
+}
 
 /**
  * Scale down the frequency of a specific lcore to the lowest according to the
  * available frequencies.
  * Review each environments specific documentation for usage..
  */
-extern rte_power_freq_change_t rte_power_freq_min;
+static inline int
+rte_power_freq_min(unsigned int lcore_id)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
+
+	return ops->freq_min(lcore_id);
+}
 
 /**
  * Query the Turbo Boost status of a specific lcore.
  * Review each environments specific documentation for usage..
  */
-extern rte_power_freq_change_t rte_power_turbo_status;
+static inline int
+rte_power_turbo_status(unsigned int lcore_id)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
+
+	return ops->turbo_status(lcore_id);
+}
 
 /**
  * Enable Turbo Boost for this lcore.
  * Review each environments specific documentation for usage..
  */
-extern rte_power_freq_change_t rte_power_freq_enable_turbo;
+static inline int
+rte_power_freq_enable_turbo(unsigned int lcore_id)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
+
+	return ops->enable_turbo(lcore_id);
+}
 
 /**
  * Disable Turbo Boost for this lcore.
  * Review each environments specific documentation for usage..
  */
-extern rte_power_freq_change_t rte_power_freq_disable_turbo;
+static inline int
+rte_power_freq_disable_turbo(unsigned int lcore_id)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
 
-/**
- * Power capabilities summary.
- */
-struct rte_power_core_capabilities {
-	union {
-		uint64_t capabilities;
-		struct {
-			uint64_t turbo:1;	/**< Turbo can be enabled. */
-			uint64_t priority:1;	/**< SST-BF high freq core */
-		};
-	};
-};
+	return ops->disable_turbo(lcore_id);
+}
 
 /**
  * Returns power capabilities for a specific lcore.
@@ -235,10 +278,14 @@ struct rte_power_core_capabilities {
  *  - 0 on success.
  *  - Negative on error.
  */
-typedef int (*rte_power_get_capabilities_t)(unsigned int lcore_id,
-		struct rte_power_core_capabilities *caps);
+static inline int
+rte_power_get_capabilities(unsigned int lcore_id,
+		struct rte_power_core_capabilities *caps)
+{
+	struct rte_power_core_ops *ops = rte_power_get_core_ops();
 
-extern rte_power_get_capabilities_t rte_power_get_capabilities;
+	return ops->get_caps(lcore_id, caps);
+}
 
 #ifdef __cplusplus
 }
diff --git a/lib/power/rte_power_core_ops.h b/lib/power/rte_power_core_ops.h
new file mode 100644
index 0000000000..356a64df79
--- /dev/null
+++ b/lib/power/rte_power_core_ops.h
@@ -0,0 +1,208 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ * Copyright(c) 2024 Advanced Micro Devices, Inc.
+ */
+
+#ifndef _RTE_POWER_CORE_OPS_H
+#define _RTE_POWER_CORE_OPS_H
+
+/**
+ * @file
+ * RTE Power Management
+ */
+
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_compat.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define RTE_POWER_DRIVER_NAMESZ	24
+
+/**
+ * Initialize power management for a specific lcore. If rte_power_set_env() has
+ * not been called then an auto-detect of the environment will start and
+ * initialise the corresponding resources.
+ *
+ * @param lcore_id
+ *  lcore id.
+ *
+ * @return
+ *  - 0 on success.
+ *  - Negative on error.
+ */
+typedef int (*rte_power_cpufreq_init_t)(unsigned int lcore_id);
+
+/**
+ * Exit power management on a specific lcore. This will call the environment
+ * dependent exit function.
+ *
+ * @param lcore_id
+ *  lcore id.
+ *
+ * @return
+ *  - 0 on success.
+ *  - Negative on error.
+ */
+typedef int (*rte_power_cpufreq_exit_t)(unsigned int lcore_id);
+
+/**
+ * Check if a specific power management environment type is supported on a
+ * currently running system.
+ *
+ * @return
+ *   - 1 if supported
+ *   - 0 if unsupported
+ *   - -1 if error, with rte_errno indicating reason for error.
+ */
+typedef int (*rte_power_check_env_support_t)(void);
+
+/**
+ * Get the available frequencies of a specific lcore.
+ * Function pointer definition. Review each environments
+ * specific documentation for usage.
+ *
+ * @param lcore_id
+ *  lcore id.
+ * @param freqs
+ *  The buffer array to save the frequencies.
+ * @param num
+ *  The number of frequencies to get.
+ *
+ * @return
+ *  The number of available frequencies.
+ */
+typedef uint32_t (*rte_power_freqs_t)(unsigned int lcore_id, uint32_t *freqs,
+					uint32_t num);
+
+/**
+ * Return the current index of available frequencies of a specific lcore.
+ * Function pointer definition. Review each environments
+ * specific documentation for usage.
+ *
+ * @param lcore_id
+ *  lcore id.
+ *
+ * @return
+ *  The current index of available frequencies.
+ */
+typedef uint32_t (*rte_power_get_freq_t)(unsigned int lcore_id);
+
+/**
+ * Set the new frequency for a specific lcore by indicating the index of
+ * available frequencies.
+ * Function pointer definition. Review each environments
+ * specific documentation for usage.
+ *
+ * @param lcore_id
+ *  lcore id.
+ * @param index
+ *  The index of available frequencies.
+ *
+ * @return
+ *  - 1 on success with frequency changed.
+ *  - 0 on success without frequency changed.
+ *  - Negative on error.
+ */
+typedef int (*rte_power_set_freq_t)(unsigned int lcore_id, uint32_t index);
+
+/**
+ * Function pointer definition for generic frequency change functions. Review
+ * each environments specific documentation for usage.
+ *
+ * @param lcore_id
+ *  lcore id.
+ *
+ * @return
+ *  - 1 on success with frequency changed.
+ *  - 0 on success without frequency changed.
+ *  - Negative on error.
+ */
+typedef int (*rte_power_freq_change_t)(unsigned int lcore_id);
+
+/**
+ * Function pointer definition for generic frequency change functions. Review
+ * each environments specific documentation for usage.
+ *
+ * @param lcore_id
+ *  lcore id.
+ *
+ * @return
+ *  - 1 on success with frequency changed.
+ *  - 0 on success without frequency changed.
+ *  - Negative on error.
+ */
+
+/**
+ * Power capabilities summary.
+ */
+struct rte_power_core_capabilities {
+	union {
+		uint64_t capabilities;
+		struct {
+			uint64_t turbo:1;       /**< Turbo can be enabled. */
+			uint64_t priority:1;    /**< SST-BF high freq core */
+		};
+	};
+};
+
+typedef int (*rte_power_get_capabilities_t)(unsigned int lcore_id,
+				struct rte_power_core_capabilities *caps);
+
+/** Structure defining core power operations structure */
+struct rte_power_core_ops {
+	RTE_TAILQ_ENTRY(rte_power_core_ops) next;	/**< Next in list. */
+	char name[RTE_POWER_DRIVER_NAMESZ];		/**< power mgmt driver. */
+	rte_power_cpufreq_init_t init;			/**< Initialize power management. */
+	rte_power_cpufreq_exit_t exit;			/**< Exit power management. */
+	rte_power_check_env_support_t check_env_support;/**< verify env is supported. */
+	rte_power_freqs_t get_avail_freqs;		/**< Get the available frequencies. */
+	rte_power_get_freq_t get_freq;			/**< Get frequency index. */
+	rte_power_set_freq_t set_freq;			/**< Set frequency index. */
+	rte_power_freq_change_t freq_up;		/**< Scale up frequency. */
+	rte_power_freq_change_t freq_down;		/**< Scale down frequency. */
+	rte_power_freq_change_t freq_max;		/**< Scale up frequency to highest. */
+	rte_power_freq_change_t freq_min;		/**< Scale up frequency to lowest. */
+	rte_power_freq_change_t turbo_status;		/**< Get Turbo status. */
+	rte_power_freq_change_t enable_turbo;		/**< Enable Turbo. */
+	rte_power_freq_change_t disable_turbo;		/**< Disable Turbo. */
+	rte_power_get_capabilities_t get_caps;		/**< power capabilities. */
+};
+
+/**
+ * Register power cpu frequency operations.
+ *
+ * @param ops
+ *   Pointer to an ops structure to register.
+ * @return
+ *   - >=0: Success; return the index of the ops struct in the table.
+ *   - -EINVAL - error while registering ops struct.
+ */
+__rte_internal
+int rte_power_register_ops(struct rte_power_core_ops *ops);
+
+/**
+ * Macro to statically register the ops of a cpufreq driver.
+ */
+#define RTE_POWER_REGISTER_OPS(ops)		\
+	RTE_INIT(power_hdlr_init_##ops)		\
+	{					\
+		rte_power_register_ops(&ops);	\
+	}
+
+/**
+ * @internal Get the power ops struct from its index.
+ *
+ * @return
+ *   The pointer to the ops struct in the table if registered.
+ */
+struct rte_power_core_ops *
+rte_power_get_core_ops(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/power/version.map b/lib/power/version.map
index c9a226614e..bd64e0828f 100644
--- a/lib/power/version.map
+++ b/lib/power/version.map
@@ -51,4 +51,18 @@ EXPERIMENTAL {
 	rte_power_set_uncore_env;
 	rte_power_uncore_freqs;
 	rte_power_unset_uncore_env;
+	# added in 24.07
+	rte_power_logtype;
+};
+
+INTERNAL {
+	global:
+
+	rte_power_register_ops;
+	cpufreq_check_scaling_driver;
+	power_set_governor;
+	open_core_sysfs_file;
+	read_core_sysfs_u32;
+	read_core_sysfs_s;
+	write_core_sysfs_s;
 };
-- 
2.34.1