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7 Commits

Author SHA1 Message Date
Suzuki K Poulose
8ce0029658 coresight: Convert claim/disclaim operations to use access wrappers 
Convert the generic CLAIM tag management APIs to use the
device access layer abstraction.

Link: https://lore.kernel.org/r/20210110224850.1880240-7-suzuki.poulose@arm.com
Cc: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20210201181351.1475223-9-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2021-02-04 17:00:32 +01:00
Suzuki K Poulose
020052825e coresight: Convert coresight_timeout to use access abstraction 
Convert the generic routines to use the new access abstraction layer
gradually, starting with coresigth_timeout.

Link: https://lore.kernel.org/r/20210110224850.1880240-6-suzuki.poulose@arm.com
Cc: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20210201181351.1475223-8-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2021-02-04 17:00:32 +01:00
Suzuki K Poulose
6e736c60a9 coresight: Introduce device access abstraction 
We are about to introduce support for sysreg access to ETMv4.4+
component. Since there are generic routines that access the
registers (e.g, CS_LOCK/UNLOCK , claim/disclaim operations, timeout)
and in order to preserve the logic of these operations at a
single place we introduce an abstraction layer for the accesses
to a given device.

Link: https://lore.kernel.org/r/20210110224850.1880240-4-suzuki.poulose@arm.com
Cc: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20210201181351.1475223-6-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2021-02-04 17:00:32 +01:00
Mathieu Poirier
56a9ecd2a2 coresight: Fix W=1 warnings in core framework 
CC      drivers/hwtracing/coresight/coresight-etm4x-sysfs.o
  CC      drivers/hwtracing/coresight/coresight-stm.o
drivers/hwtracing/coresight/coresight-core.c:440: warning: Function parameter or member 'csdev' not described in 'coresight_disable_source'
drivers/hwtracing/coresight/coresight-core.c:670: warning: Function parameter or member 'csdev' not described in 'coresight_get_ref'
drivers/hwtracing/coresight/coresight-core.c:687: warning: Function parameter or member 'csdev' not described in 'coresight_put_ref'
drivers/hwtracing/coresight/coresight-core.c:758: warning: Function parameter or member 'sink' not described in '_coresight_build_path'
  CC      drivers/hwtracing/coresight/coresight-cpu-debug.o
  CC      drivers/hwtracing/coresight/coresight-catu.o

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20201127175256.1092685-14-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-11-27 20:23:13 +01:00
Zou Wei
3ac1e0069b coresight: core: Remove unneeded semicolon 
Fixes coccicheck warning:

./drivers/hwtracing/coresight/coresight-core.c:421:4-5: Unneeded semicolon

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20201127175256.1092685-3-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-11-27 20:23:11 +01:00
Arnd Bergmann
0f5cef2b29 coresight: add module license 
When built as a loadable module, coresight now causes a warning about
missing license information.

WARNING: modpost: missing MODULE_LICENSE() in drivers/hwtracing/coresight/coresight.o

Fixes: 8e264c52e1 ("coresight: core: Allow the coresight core driver to be built as a module")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20201026160205.3704789-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-10-29 08:36:41 +01:00
Tingwei Zhang
8e264c52e1 coresight: core: Allow the coresight core driver to be built as a module 
Enhance coresight developer's efficiency to debug coresight drivers.
- Kconfig becomes a tristate, to allow =m
- append -core to source file name to allow module to
  be called coresight by the Makefile
- modules can have only one init/exit, so we add the etm_perf
  register/unregister function calls to the core init/exit
  functions.
- add a MODULE_DEVICE_TABLE for autoloading on boot

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Suzuki K Poulose <Suzuki.Poulose@arm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Tested-by: Mike Leach <mike.leach@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200928163513.70169-25-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-09-28 19:47:42 +02:00