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drivers/perf: add DDR Sub-System Driveway PMU driver for Yitian 710 SoC

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Add the DDR Sub-System Driveway Performance Monitoring Unit (PMU) driver
support for Alibaba T-Head Yitian 710 SoC chip. Yitian supports DDR5/4
DRAM and targets cloud computing and HPC.

Each PMU is registered as a device in /sys/bus/event_source/devices, and
users can select event to monitor in each sub-channel, independently. For
example, ali_drw_21000 and ali_drw_21080 are two PMU devices for two
sub-channels of the same channel in die 0. And the PMU device of die 1 is
prefixed with ali_drw_400XXXXX, e.g. ali_drw_40021000.

Due to hardware limitation, one of DDRSS Driveway PMU overflow interrupt
shares the same irq number with MPAM ERR_IRQ. To register DDRSS PMU and
MPAM drivers successfully, add IRQF_SHARED flag.

Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Co-developed-by: Hongbo Yao <yaohongbo@linux.alibaba.com>
Signed-off-by: Hongbo Yao <yaohongbo@linux.alibaba.com>
Co-developed-by: Neng Chen <nengchen@linux.alibaba.com>
Signed-off-by: Neng Chen <nengchen@linux.alibaba.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220818031822.38415-3-xueshuai@linux.alibaba.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Shuai Xue
2022-08-18 11:18:21 +08:00
committed by Will Deacon
parent a6f92909d6
commit cf7b61073e
3 changed files with 818 additions and 0 deletions
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7
drivers/perf/Kconfig
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@@ -183,6 +183,13 @@ config APPLE_M1_CPU_PMU
Provides support for the non-architectural CPU PMUs present on
the Apple M1 SoCs and derivatives.
config ALIBABA_UNCORE_DRW_PMU
tristate "Alibaba T-Head Yitian 710 DDR Sub-system Driveway PMU driver"
depends on ARM64 || COMPILE_TEST
help
Support for Driveway PMU events monitoring on Yitian 710 DDR
Sub-system.
source "drivers/perf/hisilicon/Kconfig"
config MARVELL_CN10K_DDR_PMU

1
drivers/perf/Makefile
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@@ -20,3 +20,4 @@ obj-$(CONFIG_ARM_DMC620_PMU) += arm_dmc620_pmu.o
obj-$(CONFIG_MARVELL_CN10K_TAD_PMU) += marvell_cn10k_tad_pmu.o
obj-$(CONFIG_MARVELL_CN10K_DDR_PMU) += marvell_cn10k_ddr_pmu.o
obj-$(CONFIG_APPLE_M1_CPU_PMU) += apple_m1_cpu_pmu.o
obj-$(CONFIG_ALIBABA_UNCORE_DRW_PMU) += alibaba_uncore_drw_pmu.o

810
drivers/perf/alibaba_uncore_drw_pmu.c Normal file
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