On 11/6/20 8:46 PM, Mathieu Poirier wrote:
On Wed, Oct 28, 2020 at 10:09:38PM +0000, Suzuki K Poulose wrote:
In preparation to detect the support for system instruction
support, move the detection of the device access to the target
CPU.
Signed-off-by: Suzuki K Poulose <suzuki.poul...@arm.com>
---
.../coresight/coresight-etm4x-core.c | 45 ++++++++++++++++---
1 file changed, 40 insertions(+), 5 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c
b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index f038bb10bc78..308674ab746c 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -56,6 +56,11 @@ static u64 etm4_get_access_type(struct etmv4_config *config);
static enum cpuhp_state hp_online;
+struct etm_init_arg {
+ struct etmv4_drvdata *drvdata;
+ struct csdev_access *csa;
+};
+
u64 etm4x_sysreg_read(struct csdev_access *csa,
u32 offset,
bool _relaxed,
@@ -669,6 +674,22 @@ static const struct coresight_ops etm4_cs_ops = {
.source_ops = &etm4_source_ops,
};
+static bool etm_init_iomem_access(struct etmv4_drvdata *drvdata,
+ struct csdev_access *csa)
+{
+ *csa = CSDEV_ACCESS_IOMEM(drvdata->base);
+ return true;
+}
+
+static bool etm_init_csdev_access(struct etmv4_drvdata *drvdata,
+ struct csdev_access *csa)
+{
+ if (drvdata->base)
+ return etm_init_iomem_access(drvdata, csa);
+
+ return false;
+}
I would also prefix the above two functions with "etm4_" rather than "etm_" to
follow what is already done in this file.
sure, will do.
suzuki
