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authorSuzuki K Poulose <suzuki.poulose@arm.com>2018-07-11 13:40:31 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-07-15 13:52:58 +0200
commitfcacb5c154baaeaee3d89b2a2b7cf6e4ce43f5f5 (patch)
treee2b17878266869fd7b6b2d6a2cc6013e2660b1c6 /drivers/hwtracing/coresight/Kconfig
parent8a091d847cecd1a3656172cb79b53a19e90b8c4f (diff)
coresight: Introduce support for Coresight Address Translation Unit
Add the initial support for Coresight Address Translation Unit, which augments the TMC in Coresight SoC-600 by providing an improved Scatter Gather mechanism. CATU is always connected to a single TMC-ETR and converts the AXI address with a translated address (from a given SG table with specific format). The CATU should be programmed in pass through mode and enabled even if the ETR doesn't use the translation by CATU. This patch provides mechanism to enable/disable the CATU always in the pass through mode. We reuse the existing ports mechanism to link the TMC-ETR to the connected CATU. i.e, TMC-ETR:output_port0 -> CATU:input_port0 Reference manual for CATU component is avilable in version r2p0 of : "Arm Coresight System-on-Chip SoC-600 Technical Reference Manual". Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/Kconfig')
-rw-r--r--drivers/hwtracing/coresight/Kconfig11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig
index ef9cb3c164e1..ad34380cac49 100644
--- a/drivers/hwtracing/coresight/Kconfig
+++ b/drivers/hwtracing/coresight/Kconfig
@@ -31,6 +31,17 @@ config CORESIGHT_LINK_AND_SINK_TMC
complies with the generic implementation of the component without
special enhancement or added features.
+config CORESIGHT_CATU
+ bool "Coresight Address Translation Unit (CATU) driver"
+ depends on CORESIGHT_LINK_AND_SINK_TMC
+ help
+ Enable support for the Coresight Address Translation Unit (CATU).
+ CATU supports a scatter gather table of 4K pages, with forward/backward
+ lookup. CATU helps TMC ETR to use a large physically non-contiguous trace
+ buffer by translating the addresses used by ETR to the physical address
+ by looking up the provided table. CATU can also be used in pass-through
+ mode where the address is not translated.
+
config CORESIGHT_SINK_TPIU
bool "Coresight generic TPIU driver"
depends on CORESIGHT_LINKS_AND_SINKS