Adding upstream version 6.9.7.upstream/6.9.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 100 insertions, 0 deletions

diff --git a/drivers/cpufreq/amd-pstate.h b/drivers/cpufreq/amd-pstate.h
new file mode 100644
index 0000000000..bc341f3590
--- /dev/null
+++ b/drivers/cpufreq/amd-pstate.h
@@ -0,0 +1,100 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2022 Advanced Micro Devices, Inc.
+ *
+ * Author: Meng Li <li.meng@amd.com>
+ */
+
+#ifndef _LINUX_AMD_PSTATE_H
+#define _LINUX_AMD_PSTATE_H
+
+#include <linux/pm_qos.h>
+
+/*********************************************************************
+ *                        AMD P-state INTERFACE                       *
+ *********************************************************************/
+/**
+ * struct  amd_aperf_mperf
+ * @aperf: actual performance frequency clock count
+ * @mperf: maximum performance frequency clock count
+ * @tsc:   time stamp counter
+ */
+struct amd_aperf_mperf {
+	u64 aperf;
+	u64 mperf;
+	u64 tsc;
+};
+
+/**
+ * struct amd_cpudata - private CPU data for AMD P-State
+ * @cpu: CPU number
+ * @req: constraint request to apply
+ * @cppc_req_cached: cached performance request hints
+ * @highest_perf: the maximum performance an individual processor may reach,
+ *		  assuming ideal conditions
+ *		  For platforms that do not support the preferred core feature, the
+ *		  highest_pef may be configured with 166 or 255, to avoid max frequency
+ *		  calculated wrongly. we take the fixed value as the highest_perf.
+ * @nominal_perf: the maximum sustained performance level of the processor,
+ *		  assuming ideal operating conditions
+ * @lowest_nonlinear_perf: the lowest performance level at which nonlinear power
+ *			   savings are achieved
+ * @lowest_perf: the absolute lowest performance level of the processor
+ * @prefcore_ranking: the preferred core ranking, the higher value indicates a higher
+ * 		  priority.
+ * @max_freq: the frequency that mapped to highest_perf
+ * @min_freq: the frequency that mapped to lowest_perf
+ * @nominal_freq: the frequency that mapped to nominal_perf
+ * @lowest_nonlinear_freq: the frequency that mapped to lowest_nonlinear_perf
+ * @cur: Difference of Aperf/Mperf/tsc count between last and current sample
+ * @prev: Last Aperf/Mperf/tsc count value read from register
+ * @freq: current cpu frequency value
+ * @boost_supported: check whether the Processor or SBIOS supports boost mode
+ * @hw_prefcore: check whether HW supports preferred core featue.
+ * 		  Only when hw_prefcore and early prefcore param are true,
+ * 		  AMD P-State driver supports preferred core featue.
+ * @epp_policy: Last saved policy used to set energy-performance preference
+ * @epp_cached: Cached CPPC energy-performance preference value
+ * @policy: Cpufreq policy value
+ * @cppc_cap1_cached Cached MSR_AMD_CPPC_CAP1 register value
+ *
+ * The amd_cpudata is key private data for each CPU thread in AMD P-State, and
+ * represents all the attributes and goals that AMD P-State requests at runtime.
+ */
+struct amd_cpudata {
+	int	cpu;
+
+	struct	freq_qos_request req[2];
+	u64	cppc_req_cached;
+
+	u32	highest_perf;
+	u32	nominal_perf;
+	u32	lowest_nonlinear_perf;
+	u32	lowest_perf;
+	u32     prefcore_ranking;
+	u32     min_limit_perf;
+	u32     max_limit_perf;
+	u32     min_limit_freq;
+	u32     max_limit_freq;
+
+	u32	max_freq;
+	u32	min_freq;
+	u32	nominal_freq;
+	u32	lowest_nonlinear_freq;
+
+	struct amd_aperf_mperf cur;
+	struct amd_aperf_mperf prev;
+
+	u64	freq;
+	bool	boost_supported;
+	bool	hw_prefcore;
+
+	/* EPP feature related attributes*/
+	s16	epp_policy;
+	s16	epp_cached;
+	u32	policy;
+	u64	cppc_cap1_cached;
+	bool	suspended;
+};
+
+#endif /* _LINUX_AMD_PSTATE_H */