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| author | Suzuki K. Poulose <suzuki.poulose@arm.com> | 2015-05-26 12:53:15 +0300 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2015-05-29 17:43:51 +0300 |
| commit | a95791efa72a08d3824713a75235d0407c0715dc (patch) | |
| tree | 0d21aded97664e3911753c90a485d00e56681faf /drivers/bus/Kconfig | |
| parent | f4d58938adb15ec961e3f694edaffdfcb5758635 (diff) | |
| download | linux-a95791efa72a08d3824713a75235d0407c0715dc.tar.xz | |
arm-cci: Add CCI-500 PMU support
CCI-500 provides 8 event counters which can count any of the
supported events independently. The PMU event id is a 9-bit
value made of two parts.
bits [8:5] - Source port
0x0-0x6 Slave Ports
0x8-0xD Master Ports
0xf Global Events to CCI
0x7,0xe Reserved
bits [0:4] - Event code (specific to each type of port)
The generic CCI-500 controlling interface remains the same with CCI-400.
However there are some differences in the PMU event counters.
- No cycle counter
- Upto 8 counters(4 in CCI-400)
- Each counter area is 64K(4K in CCI400)
- The counter0 starts at offset 0x10000 from the base of CCI
Cc: Punit Agrawal <punit.agrawal@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Acked-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/bus/Kconfig')
| -rw-r--r-- | drivers/bus/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig index a857936beac8..1a82f3a17681 100644 --- a/drivers/bus/Kconfig +++ b/drivers/bus/Kconfig @@ -34,6 +34,20 @@ config ARM_CCI400_PORT_CTRL Low level power management driver for CCI400 cache coherent interconnect for ARM platforms. +config ARM_CCI500_PMU + bool "ARM CCI500 PMU support" + default y + depends on (ARM && CPU_V7) || ARM64 + depends on PERF_EVENTS + select ARM_CCI_PMU + help + Support for PMU events monitoring on the ARM CCI-500 cache coherent + interconnect. CCI-500 provides 8 independent event counters, which + can count events pertaining to the slave/master interfaces as well + as the internal events to the CCI. + + If unsure, say Y + config ARM_CCN bool "ARM CCN driver support" depends on ARM || ARM64 |