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coresight: tmc: Extract device properties from AMBA pid based table lookup

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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@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: James Clark <james.clark@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20240314055843.2625883-4-anshuman.khandual@arm.com
This commit is contained in:
Anshuman Khandual 2024-03-14 11:28:35 +05:30 committed by Suzuki K Poulose
parent 852e9a3205
commit 3ab210297c
1 changed files with 10 additions and 4 deletions
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14
drivers/hwtracing/coresight/coresight-tmc-core.c
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@ -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);