Commit 3de6be7a authored by Robin Murphy's avatar Robin Murphy Committed by Arnd Bergmann
Browse files

drivers/bus: Split Arm CCI driver 



The arm-cci driver is really two entirely separate drivers; one for MCPM
port control and the other for the performance monitors. Since they are
already relatively self-contained, let's take the plunge and move the
PMU parts out to drivers/perf where they belong these days. For non-MCPM
systems this leaves a small dependency on the remaining "bus" stub for
initial probing and discovery, but we end up with something that still
fits the general pattern of its fellow system PMU drivers to ease future
maintenance.

Moving code to a new file also offers a perfect excuse to modernise the
license/copyright headers and clean up some funky linewraps on the way.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: default avatarSuzuki Poulose <suzuki.poulose@arm.com>
Acked-by: default avatarPunit Agrawal <punit.agrawal@arm.com>
Signed-off-by: default avatarRobin Murphy <robin.murphy@arm.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 1888d3dd

drivers/bus/Kconfig

+0 −28
Original line number Diff line number Diff line
@@ -8,25 +8,10 @@ menu "Bus devices" 
config ARM_CCI

	bool



config ARM_CCI_PMU

	bool

	select ARM_CCI



config ARM_CCI400_COMMON

	bool

	select ARM_CCI



config ARM_CCI400_PMU

	bool "ARM CCI400 PMU support"

	depends on (ARM && CPU_V7) || ARM64

	depends on PERF_EVENTS

	select ARM_CCI400_COMMON

	select ARM_CCI_PMU

	help

	  Support for PMU events monitoring on the ARM CCI-400 (cache coherent

	  interconnect). CCI-400 supports counting events related to the

	  connected slave/master interfaces.



config ARM_CCI400_PORT_CTRL

	bool

	depends on ARM && OF && CPU_V7
@@ -35,19 +20,6 @@ config ARM_CCI400_PORT_CTRL 
	  Low level power management driver for CCI400 cache coherent

	  interconnect for ARM platforms.



config ARM_CCI5xx_PMU

	bool "ARM CCI-500/CCI-550 PMU support"

	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/CCI-550 cache

	  coherent interconnects. Both of them provide 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 BRCMSTB_GISB_ARB

	bool "Broadcom STB GISB bus arbiter"

	depends on ARM || ARM64 || MIPS

drivers/bus/arm-cci.c

+2 −1743

File changed.

Preview size limit exceeded, changes collapsed.

drivers/perf/Kconfig

+26 −0
Original line number Diff line number Diff line
@@ -5,6 +5,32 @@ 
menu "Performance monitor support"

	depends on PERF_EVENTS



config ARM_CCI_PMU

	bool

	select ARM_CCI



config ARM_CCI400_PMU

	bool "ARM CCI400 PMU support"

	depends on (ARM && CPU_V7) || ARM64

	select ARM_CCI400_COMMON

	select ARM_CCI_PMU

	help

	  Support for PMU events monitoring on the ARM CCI-400 (cache coherent

	  interconnect). CCI-400 supports counting events related to the

	  connected slave/master interfaces.



config ARM_CCI5xx_PMU

	bool "ARM CCI-500/CCI-550 PMU support"

	depends on (ARM && CPU_V7) || ARM64

	select ARM_CCI_PMU

	help

	  Support for PMU events monitoring on the ARM CCI-500/CCI-550 cache

	  coherent interconnects. Both of them provide 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

	tristate "ARM CCN driver support"

	depends on ARM || ARM64

drivers/perf/Makefile

+1 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0

obj-$(CONFIG_ARM_CCI_PMU) += arm-cci.o

obj-$(CONFIG_ARM_CCN) += arm-ccn.o

obj-$(CONFIG_ARM_DSU_PMU) += arm_dsu_pmu.o

obj-$(CONFIG_ARM_PMU) += arm_pmu.o arm_pmu_platform.o

drivers/perf/arm-cci.c

0 → 100644
+1747 −0

File added.

Preview size limit exceeded, changes collapsed.

CRA Git | Maintained and supported by SUSTech CRA and CCSE