From: Huang Rui <ray.huang@amd.com>
To: Shuah Khan <skhan@linuxfoundation.org>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
<linux-pm@vger.kernel.org>
Cc: Deepak Sharma <deepak.sharma@amd.com>,
Alex Deucher <alexander.deucher@amd.com>,
Mario Limonciello <mario.limonciello@amd.com>,
Steven Noonan <steven@valvesoftware.com>,
Nathan Fontenot <nathan.fontenot@amd.com>,
Jinzhou Su <Jinzhou.Su@amd.com>,
Xiaojian Du <Xiaojian.Du@amd.com>,
Perry Yuan <Perry.Yuan@amd.com>, Jassmine Meng <li.meng@amd.com>,
Borislav Petkov <bp@alien8.de>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Viresh Kumar <viresh.kumar@linaro.org>,
Steven Rostedt <rostedt@goodmis.org>,
"Giovanni Gherdovich" <ggherdovich@suse.cz>,
<linux-kernel@vger.kernel.org>, Huang Rui <ray.huang@amd.com>
Subject: [PATCH v7 06/10] cpupower: Add AMD P-State sysfs definition and access helper
Date: Tue, 22 Feb 2022 23:34:22 +0800 [thread overview]
Message-ID: <20220222153426.2216974-7-ray.huang@amd.com> (raw)
In-Reply-To: <20220222153426.2216974-1-ray.huang@amd.com>
Introduce the marco definitions and access helper function for
AMD P-State sysfs interfaces such as each performance goals and frequency
levels in amd helper file. They will be used to read the sysfs attribute
from AMD P-State cpufreq driver for cpupower utilities.
Signed-off-by: Huang Rui <ray.huang@amd.com>
---
tools/power/cpupower/utils/helpers/amd.c | 30 ++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/tools/power/cpupower/utils/helpers/amd.c b/tools/power/cpupower/utils/helpers/amd.c
index 97f2c857048e..4d45d1b44164 100644
--- a/tools/power/cpupower/utils/helpers/amd.c
+++ b/tools/power/cpupower/utils/helpers/amd.c
@@ -8,7 +8,10 @@
#include <pci/pci.h>
#include "helpers/helpers.h"
+#include "cpufreq.h"
+#include "acpi_cppc.h"
+/* ACPI P-States Helper Functions for AMD Processors ***************/
#define MSR_AMD_PSTATE_STATUS 0xc0010063
#define MSR_AMD_PSTATE 0xc0010064
#define MSR_AMD_PSTATE_LIMIT 0xc0010061
@@ -146,4 +149,31 @@ int amd_pci_get_num_boost_states(int *active, int *states)
pci_cleanup(pci_acc);
return 0;
}
+
+/* ACPI P-States Helper Functions for AMD Processors ***************/
+
+/* AMD P-State Helper Functions ************************************/
+enum amd_pstate_value {
+ AMD_PSTATE_HIGHEST_PERF,
+ AMD_PSTATE_MAX_FREQ,
+ AMD_PSTATE_LOWEST_NONLINEAR_FREQ,
+ MAX_AMD_PSTATE_VALUE_READ_FILES,
+};
+
+static const char *amd_pstate_value_files[MAX_AMD_PSTATE_VALUE_READ_FILES] = {
+ [AMD_PSTATE_HIGHEST_PERF] = "amd_pstate_highest_perf",
+ [AMD_PSTATE_MAX_FREQ] = "amd_pstate_max_freq",
+ [AMD_PSTATE_LOWEST_NONLINEAR_FREQ] = "amd_pstate_lowest_nonlinear_freq",
+};
+
+static unsigned long amd_pstate_get_data(unsigned int cpu,
+ enum amd_pstate_value value)
+{
+ return cpufreq_get_sysfs_value_from_table(cpu,
+ amd_pstate_value_files,
+ value,
+ MAX_AMD_PSTATE_VALUE_READ_FILES);
+}
+
+/* AMD P-State Helper Functions ************************************/
#endif /* defined(__i386__) || defined(__x86_64__) */
--
2.25.1
next prev parent reply other threads:[~2022-02-22 15:35 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-22 15:34 [PATCH v7 00/10] cpupower: Add AMD P-State Support Huang Rui
2022-02-22 15:34 ` [PATCH v7 01/10] cpupower: Add AMD P-State capability flag Huang Rui
2022-02-22 15:34 ` [PATCH v7 02/10] cpupower: Add the function to check AMD P-State enabled Huang Rui
2022-02-22 15:34 ` [PATCH v7 03/10] cpupower: Initial AMD P-State capability Huang Rui
2022-02-22 15:34 ` [PATCH v7 04/10] cpupower: Add the function to get the sysfs value from specific table Huang Rui
2022-02-22 15:34 ` [PATCH v7 05/10] cpupower: Introduce ACPI CPPC library Huang Rui
2022-02-22 15:34 ` Huang Rui [this message]
2022-02-22 15:34 ` [PATCH v7 07/10] cpupower: Enable boost state support for AMD P-State module Huang Rui
2022-02-22 15:34 ` [PATCH v7 08/10] cpupower: Move print_speed function into misc helper Huang Rui
2022-02-22 15:34 ` [PATCH v7 09/10] cpupower: Add function to print AMD P-State performance capabilities Huang Rui
2022-02-22 15:34 ` [PATCH v7 10/10] cpupower: Add "perf" option to print AMD P-State information Huang Rui
2022-02-23 3:37 ` Huang Rui
2022-02-24 0:55 ` Shuah Khan
2022-02-23 1:44 ` [PATCH v7 00/10] cpupower: Add AMD P-State Support Shuah Khan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220222153426.2216974-7-ray.huang@amd.com \
--to=ray.huang@amd.com \
--cc=Jinzhou.Su@amd.com \
--cc=Perry.Yuan@amd.com \
--cc=Xiaojian.Du@amd.com \
--cc=alexander.deucher@amd.com \
--cc=bp@alien8.de \
--cc=deepak.sharma@amd.com \
--cc=ggherdovich@suse.cz \
--cc=li.meng@amd.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=mario.limonciello@amd.com \
--cc=mingo@kernel.org \
--cc=nathan.fontenot@amd.com \
--cc=peterz@infradead.org \
--cc=rafael.j.wysocki@intel.com \
--cc=rostedt@goodmis.org \
--cc=skhan@linuxfoundation.org \
--cc=steven@valvesoftware.com \
--cc=viresh.kumar@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).