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drm/i915/uc: Check all firmwares against WOPCM size 

Both GuC and HuC firmwares will be moved into WOPCM so
we can check ucode size early for both cases.

Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171016144724.17244-8-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2017-10-16 14:47:16 +00:00 committed by Joonas Lahtinen
parent cd5a917e35
commit afb3484f92
1 changed files with 9 additions and 8 deletions
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17
drivers/gpu/drm/i915/intel_uc_fw.c
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@ -85,6 +85,15 @@ void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
uc_fw->ucode_offset = uc_fw->header_offset + uc_fw->header_size;
uc_fw->ucode_size = (css->size_dw - css->header_size_dw) * sizeof(u32);
/* Header and uCode will be loaded to WOPCM */
size = uc_fw->header_size + uc_fw->ucode_size;
if (size > intel_guc_wopcm_size(dev_priv)) {
DRM_WARN("%s: Firmware is too large to fit in WOPCM\n",
intel_uc_fw_type_repr(uc_fw->type));
err = -E2BIG;
goto fail;
}
/* now RSA */
if (css->key_size_dw != UOS_RSA_SCRATCH_MAX_COUNT) {
DRM_NOTE("RSA key size is bad\n");
@ -108,14 +117,6 @@ void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
*/
switch (uc_fw->type) {
case INTEL_UC_FW_TYPE_GUC:
/* Header and uCode will be loaded to WOPCM. Size of the two. */
size = uc_fw->header_size + uc_fw->ucode_size;
/* Top 32k of WOPCM is reserved (8K stack + 24k RC6 context). */
if (size > intel_guc_wopcm_size(dev_priv)) {
DRM_ERROR("Firmware is too large to fit in WOPCM\n");
goto fail;
}
uc_fw->major_ver_found = css->guc.sw_version >> 16;
uc_fw->minor_ver_found = css->guc.sw_version & 0xFFFF;
break;