From: Sivaprasad Tummala <sivaprasad.tumm...@amd.com>
currently the uncore power management implementation is vendor specific.
Added new vendor agnostic uncore power interface similar to rte_power
and subsequently will rename specific implementations
("rte_power_intel_uncore") to "power_intel_uncore" along with functions.
Signed-off-by: Sivaprasad Tummala <sivaprasad.tumm...@amd.com>
---
lib/power/rte_power_uncore.h | 234 +++++++++++++++++++++++++++++++++++
1 file changed, 234 insertions(+)
create mode 100644 lib/power/rte_power_uncore.h
diff --git a/lib/power/rte_power_uncore.h b/lib/power/rte_power_uncore.h
new file mode 100644
index 0000000000..196fb9ec01
--- /dev/null
+++ b/lib/power/rte_power_uncore.h
@@ -0,0 +1,234 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2022 Intel Corporation
+ * Copyright(c) 2023 AMD Corporation
+ */
+
+#ifndef RTE_POWER_UNCORE_H
+#define RTE_POWER_UNCORE_H
+
+/**
+ * @file
+ * RTE Uncore Frequency Management
+ */
+
+#include <rte_compat.h>
+#include "rte_power.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Uncore Power Management Environment */
+enum uncore_power_mgmt_env { UNCORE_PM_ENV_NOT_SET,
+ UNCORE_PM_ENV_INTEL_UNCORE, UNCORE_PM_ENV_AMD_HSMP};
+
+/**
+ * Initialize uncore frequency management for specific die on a package.
+ * It will get the available frequencies and prepare to set new die
frequencies.
+ *
+ * This function should NOT be called in the fast path.
+ *
+ * @param pkg
+ * Package number.
+ * Each physical CPU in a system is referred to as a package.
+ * @param die
+ * Die number.
+ * Each package can have several dies connected together via the uncore mesh.
+ *
+ * @return
+ * - 0 on success.
+ * - Negative on error.
+ */
+__rte_experimental
+int
+rte_power_uncore_init(unsigned int pkg, unsigned int die);
+
+/**
+ * Exit uncore frequency management on a specific die on a package.
+ * It will restore uncore min and* max values to previous values
+ * before initialization of API.
+ *
+ * This function should NOT be called in the fast path.
+ *
+ * @param pkg
+ * Package number.
+ * Each physical CPU in a system is referred to as a package.
+ * @param die
+ * Die number.
+ * Each package can have several dies connected together via the uncore mesh.
+ *
+ * @return
+ * - 0 on success.
+ * - Negative on error.
+ */
+__rte_experimental
+int
+rte_power_uncore_exit(unsigned int pkg, unsigned int die);
+
+/**
+ * Return the current index of available frequencies of a specific die on a
package.
+ * It should be protected outside of this function for threadsafe.
+ *
+ * This function should NOT be called in the fast path.
+ *
+ * @param pkg
+ * Package number.
+ * Each physical CPU in a system is referred to as a package.
+ * @param die
+ * Die number.
+ * Each package can have several dies connected together via the uncore mesh.
+ *
+ * @return
+ * The current index of available frequencies.
+ * If error, it will return 'RTE_POWER_INVALID_FREQ_INDEX = (~0)'.
+ */
+typedef uint32_t (*rte_power_get_uncore_freq_t)(unsigned int pkg, unsigned int
die);
+
+extern rte_power_get_uncore_freq_t rte_power_get_uncore_freq;
+
+/**
+ * Set minimum and maximum uncore frequency for specified die on a package
+ * to specified index value.
+ * It should be protected outside of this function for threadsafe.
+ *
+ * This function should NOT be called in the fast path.
+ *
+ * @param pkg
+ * Package number.
+ * Each physical CPU in a system is referred to as a package.
+ * @param die
+ * Die number.
+ * Each package can have several dies connected together via the uncore mesh.
+ * @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_uncore_freq_t)(unsigned int pkg, unsigned int die,
uint32_t index);
+
+extern rte_power_set_uncore_freq_t rte_power_set_uncore_freq;
+
+/**
+ * Function pointer definition for generic frequency change functions.
+ *
+ * @param pkg
+ * Package number.
+ * Each physical CPU in a system is referred to as a package.
+ * @param die
+ * Die number.
+ * Each package can have several dies connected together via the uncore mesh.
+ *
+ * @return
+ * - 1 on success with frequency changed.
+ * - 0 on success without frequency changed.
+ * - Negative on error.
+ */
+typedef int (*rte_power_uncore_freq_change_t)(unsigned int pkg, unsigned int
die);
+
+/**
+ * Set minimum and maximum uncore frequency for specified die on a package
+ * to maximum value according to the available frequencies.
+ * It should be protected outside of this function for threadsafe.
+ *
+ * This function should NOT be called in the fast path.
+ *
+ * @param pkg
+ * Package number.
+ * Each physical CPU in a system is referred to as a package.
+ * @param die
+ * Die number.
+ * Each package can have several dies connected together via the uncore mesh.
+ *
+ * @return
+ * - 1 on success with frequency changed.
+ * - 0 on success without frequency changed.
+ * - Negative on error.
+ */
+extern rte_power_uncore_freq_change_t rte_power_uncore_freq_max;
+
+/**
+ * Set minimum and maximum uncore frequency for specified die on a package
+ * to minimum value according to the available frequencies.
+ * It should be protected outside of this function for threadsafe.
+ *
+ * This function should NOT be called in the fast path.
+ *
+ * @param pkg
+ * Package number.
+ * Each physical CPU in a system is referred to as a package.
+ * @param die
+ * Die number.
+ * Each package can have several dies connected together via the uncore mesh.
+ *
+ * @return
+ * - 1 on success with frequency changed.
+ * - 0 on success without frequency changed.
+ * - Negative on error.
+ */
+extern rte_power_uncore_freq_change_t rte_power_uncore_freq_min;
+
+/**
+ * Return the list length of available frequencies in the index array.
+ *
+ * This function should NOT be called in the fast path.
+ *
+ * @param pkg
+ * Package number.
+ * Each physical CPU in a system is referred to as a package.
+ * @param die
+ * Die number.
+ * Each package can have several dies connected together via the uncore mesh.
+ * @param freqs
+ * The buffer array to save the frequencies.
+ * @param num
+ * The number of frequencies to get.
+ *
+ * @return
+ * - The number of available index's in frequency array.
+ * - Negative on error.
+ */
+typedef int (*rte_power_uncore_freqs_t)(unsigned int pkg, unsigned int die,
+ uint32_t *freqs, uint32_t num);
+
+extern rte_power_uncore_freqs_t rte_power_uncore_freqs;
+
+/**
+ * Return the number of packages (CPUs) on a system
+ * by parsing the uncore sysfs directory.
+ *
+ * This function should NOT be called in the fast path.
+ *
+ * @return
+ * - Zero on error.
+ * - Number of package on system on success.
+ */
+typedef unsigned int (*rte_power_uncore_get_num_pkgs_t)(void);
+
+extern rte_power_uncore_get_num_pkgs_t rte_power_uncore_get_num_pkgs;
+
+/**
+ * Return the number of dies for pakckages (CPUs) specified
+ * from parsing the uncore sysfs directory.
+ *
+ * This function should NOT be called in the fast path.
+ *
+ * @param pkg
+ * Package number.
+ * Each physical CPU in a system is referred to as a package.
+ *
+ * @return
+ * - Zero on error.
+ * - Number of dies for package on sucecss.
+ */
+typedef unsigned int (*rte_power_uncore_get_num_pkgs_t)(unsigned int pkg);
+
+extern rte_power_uncore_get_num_dies_t rte_power_uncore_get_num_dies;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* RTE_POWER_UNCORE_H */
--
2.34.1
