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authorSuzuki K. Poulose <suzuki.poulose@arm.com>2015-05-26 12:53:15 +0300
committerArnd Bergmann <arnd@arndb.de>2015-05-29 17:43:51 +0300
commita95791efa72a08d3824713a75235d0407c0715dc (patch)
tree0d21aded97664e3911753c90a485d00e56681faf /drivers/bus/Kconfig
parentf4d58938adb15ec961e3f694edaffdfcb5758635 (diff)
downloadlinux-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/Kconfig14
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