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coresight: cpu-debug: Add support for Qualcomm Kryo

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Add support for coresight CPU debug module on Qualcomm
Kryo CPUs. This patch adds the UCI entries for Kryo CPUs
found on MSM8996 which shares the same PIDs as ETMs.

Without this, below error is observed on MSM8996:

[    5.429867] OF: graph: no port node found in /soc/debug@3810000
[    5.429938] coresight-etm4x: probe of 3810000.debug failed with error -22
[    5.435415] coresight-cpu-debug 3810000.debug: Coresight debug-CPU0 initialized
[    5.446474] OF: graph: no port node found in /soc/debug@3910000
[    5.448927] coresight-etm4x: probe of 3910000.debug failed with error -22
[    5.454681] coresight-cpu-debug 3910000.debug: Coresight debug-CPU1 initialized
[    5.487765] OF: graph: no port node found in /soc/debug@3a10000
[    5.488007] coresight-etm4x: probe of 3a10000.debug failed with error -22
[    5.493024] coresight-cpu-debug 3a10000.debug: Coresight debug-CPU2 initialized
[    5.501802] OF: graph: no port node found in /soc/debug@3b10000
[    5.512901] coresight-etm4x: probe of 3b10000.debug failed with error -22
[    5.513192] coresight-cpu-debug 3b10000.debug: Coresight debug-CPU3 initialized

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20190829202842.580-4-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sai Prakash Ranjan 2019-08-29 14:28:28 -06:00 committed by Greg Kroah-Hartman
parent 17b4add0d4
commit df4473fadc
2 changed files with 21 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
drivers/hwtracing/coresight/coresight-cpu-debug.c
View file

@ -646,24 +646,23 @@ static int debug_remove(struct amba_device *adev)
return 0;
}
static const struct amba_cs_uci_id uci_id_debug[] = {
{
/* CPU Debug UCI data */
.devarch = 0x47706a15,
.devarch_mask = 0xfff0ffff,
.devtype = 0x00000015,
}
};
static const struct amba_id debug_ids[] = {
{ /* Debug for Cortex-A53 */
.id = 0x000bbd03,
.mask = 0x000fffff,
},
{ /* Debug for Cortex-A57 */
.id = 0x000bbd07,
.mask = 0x000fffff,
},
{ /* Debug for Cortex-A72 */
.id = 0x000bbd08,
.mask = 0x000fffff,
},
{ /* Debug for Cortex-A73 */
.id = 0x000bbd09,
.mask = 0x000fffff,
},
{ 0, 0 },
CS_AMBA_ID(0x000bbd03), /* Cortex-A53 */
CS_AMBA_ID(0x000bbd07), /* Cortex-A57 */
CS_AMBA_ID(0x000bbd08), /* Cortex-A72 */
CS_AMBA_ID(0x000bbd09), /* Cortex-A73 */
CS_AMBA_UCI_ID(0x000f0205, uci_id_debug), /* Qualcomm Kryo */
CS_AMBA_UCI_ID(0x000f0211, uci_id_debug), /* Qualcomm Kryo */
{},
};
static struct amba_driver debug_driver = {

10
drivers/hwtracing/coresight/coresight-priv.h
View file

@ -185,11 +185,11 @@ static inline int etm_writel_cp14(u32 off, u32 val) { return 0; }
}
/* coresight AMBA ID, full UCI structure: id table entry. */
#define CS_AMBA_UCI_ID(pid, uci_ptr) \
{ \
.id = pid, \
.mask = 0x000fffff, \
.data = uci_ptr \
#define CS_AMBA_UCI_ID(pid, uci_ptr) \
{ \
.id = pid, \
.mask = 0x000fffff, \
.data = (void *)uci_ptr \
}
/* extract the data value from a UCI structure given amba_id pointer. */