diff options
| author | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2018-01-10 15:42:58 +0200 |
|---|---|---|
| committer | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2018-01-31 15:27:09 +0200 |
| commit | 7f0be0e7d9becb79630093bf0e6daeadcd937062 (patch) | |
| tree | eef956756b06273d71731d98a545142e8bb99fb2 /man | |
| parent | 3f820260ce660cdff7fb803237c57554a29498c0 (diff) | |
tools/intel_reg: Add reading and writing registers through engine
Add option to specify engine for register read/write operation.
If engine is specified, use MI_LOAD_REGISTER_IMM and MI_STORE_REGISTER_IMM
to write and read register using a batch targeted at that engine.
v2: no MI_NOOP after BBE (Chris)
v3: use modern engine names (Chris), use global fd
v4: strcasecmp (Chris)
v5: use register definition format for engine (Jani)
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
CC: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v4)
Acked-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'man')
| -rw-r--r-- | man/intel_reg.rst | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/man/intel_reg.rst b/man/intel_reg.rst index d1af178a..4ec24c4c 100644 --- a/man/intel_reg.rst +++ b/man/intel_reg.rst @@ -103,7 +103,7 @@ Display brief help. REGISTER REFERENCES =================== -Registers are defined as [(PORTNAME|PORTNUM|MMIO-OFFSET):](REGNAME|REGADDR). +Registers are defined as [(PORTNAME|PORTNUM|ENGINE|MMIO-OFFSET):](REGNAME|REGADDR). PORTNAME The register access method, most often MMIO, which is the default. The @@ -120,6 +120,13 @@ PORTNUM Numbers above 0xff are automatically interpreted as MMIO offsets, not port numbers. +ENGINE + Instead of cpu based MMIO, specified engine can be used for access method. + Batchbuffer will be targeted for the engine to do read/write. The list of + available engines is architecture specific and can be found with + "intel_reg help". Prefixing engine name with '-' uses non-privileged + batchbuffer for access. + MMIO-OFFSET Use MMIO, and add this offset to the register address. |