From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: rjw@rjwysocki.net, tglx@linutronix.de, mingo@redhat.com, bp@suse.de
Cc: x86@kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
peterz@infradead.org, tim.c.chen@linux.intel.com,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: [PATCH v3 6/8] acpi: bus: Enable HWP CPPC objects
Date: Thu, 8 Sep 2016 15:26:53 -0700 [thread overview]
Message-ID: <1473373615-51427-7-git-send-email-srinivas.pandruvada@linux.intel.com> (raw)
In-Reply-To: <1473373615-51427-1-git-send-email-srinivas.pandruvada@linux.intel.com>
Need to set platform wide _OSC bits to enable CPPC and CPPC version 2.
If platform supports CPPC, then BIOS exposess CPPC tables.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
drivers/acpi/bus.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 85b7d07..61643a5 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -330,6 +330,13 @@ static void acpi_bus_osc_support(void)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
+#ifdef CONFIG_X86
+ if (boot_cpu_has(X86_FEATURE_HWP)) {
+ capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT;
+ capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT;
+ }
+#endif
+
if (!ghes_disable)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
--
2.7.4
next prev parent reply other threads:[~2016-09-08 22:26 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-08 22:26 [PATCH v3 0/8] Support Intel® Turbo Boost Max Technology 3.0 Srinivas Pandruvada
2016-09-08 22:26 ` [PATCH v3 1/8] sched, x86: Add SD_ASYM_PACKING flags to x86 cpu topology for ITMT Srinivas Pandruvada
2016-09-10 13:10 ` Thomas Gleixner
2016-09-12 20:50 ` Tim Chen
2016-09-13 7:26 ` Peter Zijlstra
2016-09-19 9:11 ` Jiri Olsa
2016-09-19 16:01 ` Tim Chen
2016-09-10 13:13 ` Thomas Gleixner
2016-09-08 22:26 ` [PATCH v3 2/8] sched: Extend scheduler's asym packing Srinivas Pandruvada
2016-09-08 22:26 ` [PATCH v3 3/8] x86, cpu: provide a function topology_num_packages to enumerate #packages Srinivas Pandruvada
2016-09-10 13:28 ` Thomas Gleixner
2016-09-12 20:51 ` Tim Chen
2016-09-08 22:26 ` [PATCH v3 4/8] sched, x86: use arch_update_cpu_topology to indicate x86 need sched domain rebuild Srinivas Pandruvada
2016-09-10 16:20 ` Thomas Gleixner
2016-09-12 21:00 ` Tim Chen
2016-09-08 22:26 ` [PATCH v3 5/8] sched,x86: Enable Turbo Boost Max Technology Srinivas Pandruvada
2016-09-10 16:21 ` Thomas Gleixner
2016-09-12 21:34 ` Tim Chen
2016-09-08 22:26 ` Srinivas Pandruvada [this message]
2016-09-08 22:26 ` [PATCH v3 7/8] acpi: bus: Set _OSC for diverse core support Srinivas Pandruvada
2016-09-08 22:26 ` [PATCH v3 8/8] cpufreq: intel_pstate: Use CPPC to get max performance Srinivas Pandruvada
2016-09-10 16:22 ` Thomas Gleixner
2016-09-12 22:34 ` Srinivas Pandruvada
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