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coresight: etm4x: Drop pid argument from etm4_probe()

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Coresight device pid can be retrieved from its iomem base address, which is
stored in 'struct etm4x_drvdata'. This drops pid argument from etm4_probe()
and 'struct etm4_init_arg'. Instead etm4_check_arch_features() derives the
coresight device pid with a new helper coresight_get_pid(), right before it
is consumed in etm4_hisi_match_pid().

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linaro.org>
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/20230710062500.45147-4-anshuman.khandual@arm.com
This commit is contained in:
Anshuman Khandual
2023-07-10 11:54:57 +05:30
committed by Suzuki K Poulose
parent 4e3b9a6eae
commit 5a1c709747
2 changed files with 27 additions and 14 deletions
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12
include/linux/coresight.h
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@@ -386,6 +386,18 @@ static inline u32 csdev_access_relaxed_read32(struct csdev_access *csa,
return csa->read(offset, true, false);
}
#define CORESIGHT_PIDRn(i) (0xFE0 + ((i) * 4))
static inline u32 coresight_get_pid(struct csdev_access *csa)
{
u32 i, pid = 0;
for (i = 0; i < 4; i++)
pid |= csdev_access_relaxed_read32(csa, CORESIGHT_PIDRn(i)) << (i * 8);
return pid;
}
static inline u64 csdev_access_relaxed_read_pair(struct csdev_access *csa,
u32 lo_offset, u32 hi_offset)
{