From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: mingo@redhat.com, tglx@linutronix.de, hpa@zytor.com,
rjw@rjwysocki.net, peterz@infradead.org
Cc: x86@kernel.org, bp@suse.de, sudeep.holla@arm.com,
ak@linux.intel.com, linux-acpi@vger.kernel.org,
linux-pm@vger.kernel.org, alexey.klimov@arm.com,
viresh.kumar@linaro.org, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org, lenb@kernel.org,
tim.c.chen@linux.intel.com, srinivas.pandruvada@linux.intel.com,
paul.gortmaker@windriver.com, jpoimboe@redhat.com,
mcgrof@kernel.org, jgross@suse.com, robert.moore@intel.com,
dvyukov@google.com, jeyu@redhat.com
Subject: [PATCH 06/11] acpi: cpcc: Add integer read support
Date: Thu, 18 Aug 2016 15:36:47 -0700 [thread overview]
Message-ID: <1471559812-19967-7-git-send-email-srinivas.pandruvada@linux.intel.com> (raw)
In-Reply-To: <1471559812-19967-1-git-send-email-srinivas.pandruvada@linux.intel.com>
The _CPC performance limits can also be simple integer not just buffer
with register information. Add support for integer read via cpc_read.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
drivers/acpi/cppc_acpi.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 2e98173..34209f5 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -651,11 +651,18 @@ EXPORT_SYMBOL_GPL(acpi_cppc_processor_exit);
* we can directly write to it.
*/
-static int cpc_read(struct cpc_reg *reg, u64 *val)
+static int cpc_read(struct cpc_register_resource *res, u64 *val)
{
+ struct cpc_reg *reg = &res->cpc_entry.reg;
int ret_val = 0;
*val = 0;
+
+ if (res->type == ACPI_TYPE_INTEGER) {
+ *val = res->cpc_entry.int_value;
+ return 0;
+ }
+
if (reg->space_id == ACPI_ADR_SPACE_PLATFORM_COMM) {
void __iomem *vaddr = GET_PCC_VADDR(reg->address);
@@ -754,16 +761,16 @@ int cppc_get_perf_caps(int cpunum, struct cppc_perf_caps *perf_caps)
}
}
- cpc_read(&highest_reg->cpc_entry.reg, &high);
+ cpc_read(highest_reg, &high);
perf_caps->highest_perf = high;
- cpc_read(&lowest_reg->cpc_entry.reg, &low);
+ cpc_read(lowest_reg, &low);
perf_caps->lowest_perf = low;
- cpc_read(&ref_perf->cpc_entry.reg, &ref);
+ cpc_read(ref_perf, &ref);
perf_caps->reference_perf = ref;
- cpc_read(&nom_perf->cpc_entry.reg, &nom);
+ cpc_read(nom_perf, &nom);
perf_caps->nominal_perf = nom;
if (!ref)
@@ -812,8 +819,8 @@ int cppc_get_perf_ctrs(int cpunum, struct cppc_perf_fb_ctrs *perf_fb_ctrs)
}
}
- cpc_read(&delivered_reg->cpc_entry.reg, &delivered);
- cpc_read(&reference_reg->cpc_entry.reg, &reference);
+ cpc_read(delivered_reg, &delivered);
+ cpc_read(reference_reg, &reference);
if (!delivered || !reference) {
ret = -EFAULT;
--
2.7.4
next prev parent reply other threads:[~2016-08-19 1:09 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-18 22:36 [PATCH 00/11] Support Intel® Turbo Boost Max Technology 3.0 Srinivas Pandruvada
2016-08-18 22:36 ` [PATCH 01/11] sched, cpuset: Add regenerate_sched_domains function to rebuild all sched domains Srinivas Pandruvada
2016-08-22 13:52 ` Morten Rasmussen
2016-08-22 19:51 ` Tim Chen
2016-08-18 22:36 ` [PATCH 02/11] sched, x86: Add SD_ASYM_PACKING flags to x86 cpu topology for cpus supporting Intel Turbo Boost Max Technology Srinivas Pandruvada
2016-08-18 22:36 ` [PATCH 03/11] sched: Extend scheduler's asym packing Srinivas Pandruvada
2016-08-25 11:22 ` Morten Rasmussen
2016-08-25 11:45 ` Peter Zijlstra
2016-08-25 13:18 ` Morten Rasmussen
2016-08-25 13:45 ` Peter Zijlstra
2016-08-26 10:39 ` Morten Rasmussen
2016-08-26 12:42 ` Peter Zijlstra
2016-08-26 17:25 ` Tim Chen
2016-08-26 23:14 ` Tim Chen
2016-08-18 22:36 ` [PATCH 04/11] sched,x86: Enable Turbo Boost Max Technology Srinivas Pandruvada
2016-08-22 9:01 ` kbuild test robot
2016-08-22 19:04 ` Tim Chen
2016-08-24 10:18 ` Ingo Molnar
2016-08-24 17:50 ` Tim Chen
2016-08-24 18:08 ` Ingo Molnar
2016-08-24 18:22 ` Peter Zijlstra
2016-08-18 22:36 ` [PATCH 05/11] acpi: cppc: Allow build with ACPI_CPU_FREQ_PSS config Srinivas Pandruvada
2016-08-20 0:46 ` Rafael J. Wysocki
2016-08-18 22:36 ` Srinivas Pandruvada [this message]
2016-08-18 22:36 ` [PATCH 07/11] acpi: cppc: Add support for function fixed hardware address Srinivas Pandruvada
2016-08-20 0:49 ` Rafael J. Wysocki
2016-08-18 22:36 ` [PATCH 08/11] acpi: cppc: Add prefix cppc to cpudata structure name Srinivas Pandruvada
2016-08-18 22:36 ` [PATCH 09/11] acpi: bus: Enable HWP CPPC objects Srinivas Pandruvada
2016-08-20 0:49 ` Rafael J. Wysocki
2016-08-18 22:36 ` [PATCH 10/11] acpi: bus: Set _OSC for diverse core support Srinivas Pandruvada
2016-08-20 0:51 ` Rafael J. Wysocki
2016-08-18 22:36 ` [PATCH 11/11] cpufreq: intel_pstate: Use CPPC to get max performance Srinivas Pandruvada
2016-08-22 11:59 ` kbuild test robot
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