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habanalabs: Make the Coresight timestamp perpetual

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The Coresight timestamp is enabled for a specific debug session using
the HL_DEBUG_OP_TIMESTAMP opcode of the debug IOCTL.
In order to have a perpetual timestamp that would be comparable between
various debug sessions, this patch moves the timestamp enablement to be
part of the HW initialization.
The HL_DEBUG_OP_TIMESTAMP opcode turns to be deprecated and shouldn't be
used. Old user-space that will call it won't see any change in the
behavior of the debug session.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Tomer Tayar
2019-09-05 14:55:27 +03:00
committed by Oded Gabbay
parent 4fd2cb15cd
commit 413cf576fd
3 changed files with 26 additions and 16 deletions
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include/uapi/misc/habanalabs.h
+1 -1
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@@ -451,7 +451,7 @@ struct hl_debug_params_spmu {
#define HL_DEBUG_OP_BMON 4
/* Opcode for SPMU component */
#define HL_DEBUG_OP_SPMU 5
/* Opcode for timestamp */
/* Opcode for timestamp (deprecated) */
#define HL_DEBUG_OP_TIMESTAMP 6
/* Opcode for setting the device into or out of debug mode. The enable
* variable should be 1 for enabling debug mode and 0 for disabling it