tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
coresight: stm: Support marked packet
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>
authored by
Tingwei Zhang
and committed by
Greg Kroah-Hartman
4af8b3d3
2d1a8bfb
+8
-4
+7
-4
drivers/hwtracing/coresight/coresight-stm.c
+7
-4
drivers/hwtracing/coresight/coresight-stm.c
···
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void __iomem *ch_addr;
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struct stm_drvdata *drvdata = container_of(stm_data,
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struct stm_drvdata, stm);
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+
unsigned int stm_flags;
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if (!(drvdata && local_read(&drvdata->mode)))
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return -EACCES;
···
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ch_addr = stm_channel_addr(drvdata, channel);
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-
flags = (flags == STP_PACKET_TIMESTAMPED) ? STM_FLAG_TIMESTAMPED : 0;
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-
flags |= test_bit(channel, drvdata->chs.guaranteed) ?
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stm_flags = (flags & STP_PACKET_TIMESTAMPED) ?
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STM_FLAG_TIMESTAMPED : 0;
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+
stm_flags |= test_bit(channel, drvdata->chs.guaranteed) ?
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STM_FLAG_GUARANTEED : 0;
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if (size > drvdata->write_bytes)
···
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switch (packet) {
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case STP_PACKET_FLAG:
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-
ch_addr += stm_channel_off(STM_PKT_TYPE_FLAG, flags);
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+
ch_addr += stm_channel_off(STM_PKT_TYPE_FLAG, stm_flags);
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/*
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* The generic STM core sets a size of '0' on flag packets.
···
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break;
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case STP_PACKET_DATA:
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-
ch_addr += stm_channel_off(STM_PKT_TYPE_DATA, flags);
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+
stm_flags |= (flags & STP_PACKET_MARKED) ? STM_FLAG_MARKED : 0;
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+
ch_addr += stm_channel_off(STM_PKT_TYPE_DATA, stm_flags);
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stm_send(ch_addr, payload, size,
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drvdata->write_bytes);
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break;