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4de062463a
The PUNIT FW is currently returning 0 for all memory bandwidth
parameters. Read the values directly from MCHBAR offsets 0x5918 and
0x4000(4).
v2 (Lucas): tidy up checking for ret slightly
v3 (Lucas):
- Squash change to double the memory bandwidth based on
MCHBAR Gear_type
- Move ICL_GEAR_TYPE_MASK to the appropriate place and change prefix
to DG1
- Move register definitions to i915_reg.h
- Make the MCHBAR path permanent for DG1
- Convert to REG_BIT()/REG_GENMASK()
v4: Drop unneeded initializations
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Jani Saarinen <jani.saarinen@intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210708175226.2451260-1-lucas.demarchi@intel.com
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.