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drm/i915/uc: Update drawing for firmware layout

Browse source 
Sphinx was rendering firmware layout as html table, but since
we want to add sizes relations switch to plain text graphics.

v2: also update text and do it before move (Daniele)

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190725141308.24660-2-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2019-07-25 14:13:07 +00:00 committed by Chris Wilson
parent dbbff8c3f6
commit 199ddded38
2 changed files with 20 additions and 23 deletions
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12
Documentation/gpu/i915.rst
View file

@ -430,6 +430,12 @@ WOPCM Layout
GuC
===
Firmware Layout
-------------------
.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
:doc: Firmware Layout
GuC-specific firmware loader
----------------------------
@ -445,12 +451,6 @@ GuC-based command submission
.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
:internal:
GuC Firmware Layout
-------------------
.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
:doc: GuC Firmware Layout
GuC Address Space
-----------------

31
drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
View file

@ -122,23 +122,20 @@
#define GUC_CTL_MAX_DWORDS (SOFT_SCRATCH_COUNT - 2) /* [1..14] */
/**
* DOC: GuC Firmware Layout
* DOC: Firmware Layout
*
* The GuC firmware layout looks like this:
* The GuC/HuC firmware layout looks like this::
*
* +-------------------------------+
* | uc_css_header |
* | |
* | contains major/minor version |
* +-------------------------------+
* | uCode |
* +-------------------------------+
* | RSA signature |
* +-------------------------------+
* | modulus key |
* +-------------------------------+
* | exponent val |
* +-------------------------------+
* +======================================================================+
* | Firmware blob |
* +===============+===============+============+============+============+
* | CSS header | uCode | RSA key | modulus | exponent |
* +===============+===============+============+============+============+
* <-header size-> <---header size continued ----------->
* <--- size ----------------------------------------------------------->
* <-key size->
* <-mod size->
* <-exp size->
*
* The firmware may or may not have modulus key and exponent data. The header,
* uCode and RSA signature are must-have components that will be used by driver.
@ -155,8 +152,8 @@
* 4. Modulus and exponent key are not required by driver. They may not appear
* in fw. So driver will load a truncated firmware in this case.
*
* HuC firmware layout is same as GuC firmware.
* Only HuC version information is saved in a different way.
* The only difference between GuC and HuC firmwares is how the version
* information is saved.
*/
struct uc_css_header {