This extracts device properties from AMBA pid based table lookup. But first
this modifies tmc_etr_setup_caps() to accept csdev access.
Cc: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Cc: Mike Leach <mike.leach@xxxxxxxxxx>
Cc: James Clark <james.clark@xxxxxxx>
Cc: coresight@xxxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Reviewed-by: James Clark <james.clark@xxxxxxx>
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
---
Changes in V5:
- Modified tmc_etr_setup_caps() to accept struct csdev_access argument
- Reverted back tmc_etr_setup_caps() call site position in tmc_probe()
- Dropped custom mask TMC_AMBA_MASK
drivers/hwtracing/coresight/coresight-tmc-core.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c
index 7ec5365e2b64..43874fa4def0 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-core.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-core.c
@@ -370,16 +370,23 @@ static inline bool tmc_etr_has_non_secure_access(struct tmc_drvdata *drvdata)
return (auth & TMC_AUTH_NSID_MASK) == 0x3;
}
+static const struct amba_id tmc_ids[];
+
/* Detect and initialise the capabilities of a TMC ETR */
-static int tmc_etr_setup_caps(struct device *parent, u32 devid, void *dev_caps)
+static int tmc_etr_setup_caps(struct device *parent, u32 devid,
+ struct csdev_access *access)
{
int rc;
- u32 dma_mask = 0;
+ u32 tmc_pid, dma_mask = 0;
struct tmc_drvdata *drvdata = dev_get_drvdata(parent);
+ void *dev_caps;
if (!tmc_etr_has_non_secure_access(drvdata))
return -EACCES;
+ tmc_pid = coresight_get_pid(access);
+ dev_caps = coresight_get_uci_data_from_amba(tmc_ids, tmc_pid);
+
/* Set the unadvertised capabilities */
tmc_etr_init_caps(drvdata, (u32)(unsigned long)dev_caps);
@@ -497,8 +504,7 @@ static int tmc_probe(struct amba_device *adev, const struct amba_id *id)
desc.type = CORESIGHT_DEV_TYPE_SINK;
desc.subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM;
desc.ops = &tmc_etr_cs_ops;
- ret = tmc_etr_setup_caps(dev, devid,
- coresight_get_uci_data(id));
+ ret = tmc_etr_setup_caps(dev, devid, &desc.access);
if (ret)
goto out;
idr_init(&drvdata->idr);
--
2.25.1
