From 6495892c9194001936a9ef0d30638c36f431636f Mon Sep 17 00:00:00 2001 From: Suzuki K Poulose Date: Wed, 2 Aug 2017 10:22:17 -0600 Subject: coresight tmc: Add support for Coresight SoC 600 TMC The coresight SoC 600 supports ETR save-restore which allows us to restore a trace session by retaining the RRP/RWP/STS.Full values when the TMC leaves the Disabled state. However, the TMC doesn't have a scatter-gather unit in built. Also, TMCs have different PIDs in different configurations (ETF, ETB & ETR), unlike the previous generation. While the DEVID exposes some of the features/changes in the TMC, it doesn't explicitly advertises the new save-restore feature as described above. Cc: Mathieu Poirier Signed-off-by: Suzuki K Poulose Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/coresight/coresight-tmc.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/hwtracing/coresight/coresight-tmc.h') diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h index d0da43a14246..8df7a813f537 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.h +++ b/drivers/hwtracing/coresight/coresight-tmc.h @@ -129,6 +129,10 @@ enum tmc_mem_intf_width { */ #define TMC_ETR_SAVE_RESTORE (0x1U << 2) +/* Coresight SoC-600 TMC-ETR unadvertised capabilities */ +#define CORESIGHT_SOC_600_ETR_CAPS \ + (TMC_ETR_SAVE_RESTORE | TMC_ETR_AXI_ARCACHE) + /** * struct tmc_drvdata - specifics associated to an TMC component * @base: memory mapped base address for this component. -- cgit v1.2.1