diff options
| -rw-r--r-- | Documentation/gpu/i915.rst | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h | 31 |
2 files changed, 20 insertions, 23 deletions
diff --git a/Documentation/gpu/i915.rst b/Documentation/gpu/i915.rst index c2173d120492..3e233f9d675f 100644 --- a/Documentation/gpu/i915.rst +++ b/Documentation/gpu/i915.rst @@ -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 ----------------- diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h index 30cca3a29323..108b386c52ec 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h @@ -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 { |