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coresight: stm: Support marked packet

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STP_PACKET_MARKED is not supported by STM currently.
Add STM_FLAG_MARKED to support marked packet in STM.

Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200916191737.4001561-3-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tingwei Zhang 2020-09-16 13:17:23 -06:00 committed by Greg Kroah-Hartman
parent 2d1a8bfb61
commit 4af8b3d3eb
2 changed files with 8 additions and 4 deletions
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11
drivers/hwtracing/coresight/coresight-stm.c
View File

@ -412,6 +412,7 @@ static ssize_t notrace stm_generic_packet(struct stm_data *stm_data,
void __iomem *ch_addr;
struct stm_drvdata *drvdata = container_of(stm_data,
struct stm_drvdata, stm);
unsigned int stm_flags;
if (!(drvdata && local_read(&drvdata->mode)))
return -EACCES;
@ -421,8 +422,9 @@ static ssize_t notrace stm_generic_packet(struct stm_data *stm_data,
ch_addr = stm_channel_addr(drvdata, channel);
flags = (flags == STP_PACKET_TIMESTAMPED) ? STM_FLAG_TIMESTAMPED : 0;
flags |= test_bit(channel, drvdata->chs.guaranteed) ?
stm_flags = (flags & STP_PACKET_TIMESTAMPED) ?
STM_FLAG_TIMESTAMPED : 0;
stm_flags |= test_bit(channel, drvdata->chs.guaranteed) ?
STM_FLAG_GUARANTEED : 0;
if (size > drvdata->write_bytes)
@ -432,7 +434,7 @@ static ssize_t notrace stm_generic_packet(struct stm_data *stm_data,
switch (packet) {
case STP_PACKET_FLAG:
ch_addr += stm_channel_off(STM_PKT_TYPE_FLAG, flags);
ch_addr += stm_channel_off(STM_PKT_TYPE_FLAG, stm_flags);
/*
* The generic STM core sets a size of '0' on flag packets.
@ -444,7 +446,8 @@ static ssize_t notrace stm_generic_packet(struct stm_data *stm_data,
break;
case STP_PACKET_DATA:
ch_addr += stm_channel_off(STM_PKT_TYPE_DATA, flags);
stm_flags |= (flags & STP_PACKET_MARKED) ? STM_FLAG_MARKED : 0;
ch_addr += stm_channel_off(STM_PKT_TYPE_DATA, stm_flags);
stm_send(ch_addr, payload, size,
drvdata->write_bytes);
break;

1
include/uapi/linux/coresight-stm.h
View File

@ -5,6 +5,7 @@
#include <linux/const.h>
#define STM_FLAG_TIMESTAMPED _BITUL(3)
#define STM_FLAG_MARKED _BITUL(4)
#define STM_FLAG_GUARANTEED _BITUL(7)
/*