| Message ID | 1477699546-6624-6-git-send-email-anusha.srivatsa@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Reviewed-by: Jeff McGee <jeff.mcgee@intel.com> On Fri, Oct 28, 2016 at 05:05:44PM -0700, Anusha Srivatsa wrote: > From: Peter Antoine <peter.antoine@intel.com> > > The HuC authentication is done by host2guc call. The HuC RSA keys > are sent to GuC for authentication. > > v2: rebased on top of drm-intel-nightly. > changed name format and upped version 1.7. > v3: rebased on top of drm-intel-nightly. > v4: changed wait_for_automic to wait_for > v5: rebased. > v7: rebased. > v8: rebased. > v9: rebased. Rename intel_huc_auh() to intel_guc_auth_huc() > and place the prototype in intel_guc.h,correct the comments. > > Tested-by: Xiang Haihao <haihao.xiang@intel.com> > Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com> > Signed-off-by: Alex Dai <yu.dai@intel.com> > Signed-off-by: Peter Antoine <peter.antoine@intel.com> > Reviewed-by: Dave Gordon <david.s.gordon@intel.com> > --- > drivers/gpu/drm/i915/i915_guc_submission.c | 63 ++++++++++++++++++++++++++++++ > drivers/gpu/drm/i915/intel_guc.h | 2 +- > drivers/gpu/drm/i915/intel_guc_fwif.h | 1 + > drivers/gpu/drm/i915/intel_guc_loader.c | 2 + > 4 files changed, 67 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c > index 99dc5d9..936eefc 100644 > --- a/drivers/gpu/drm/i915/i915_guc_submission.c > +++ b/drivers/gpu/drm/i915/i915_guc_submission.c > @@ -27,6 +27,7 @@ > #include <linux/relay.h> > #include "i915_drv.h" > #include "intel_guc.h" > +#include "intel_huc.h" > > /** > * DOC: GuC-based command submission > @@ -1713,3 +1714,65 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val) > > return ret; > } > + > +/** > + * intel_guc_auth_huc() - authenticate ucode > + * @dev: the drm device > + * > + * Triggers a HuC fw authentication request to the GuC via host-2-guc > + * interface. > + */ > +void intel_guc_auth_huc(struct drm_device *dev) > +{ > + struct drm_i915_private *dev_priv = dev->dev_private; > + struct intel_guc *guc = &dev_priv->guc; > + struct intel_huc *huc = &dev_priv->huc; > + struct i915_vma *vma; > + int ret; > + u32 data[2]; > + > + /* Bypass the case where there is no HuC firmware */ > + if (huc->huc_fw.fetch_status == UC_FIRMWARE_NONE || > + huc->huc_fw.load_status == UC_FIRMWARE_NONE) > + return; > + > + if (guc->guc_fw.load_status != UC_FIRMWARE_SUCCESS) { > + DRM_ERROR("HuC: GuC fw wasn't loaded. Can't authenticate"); > + return; > + } > + > + if (huc->huc_fw.load_status != UC_FIRMWARE_SUCCESS) { > + DRM_ERROR("HuC: fw wasn't loaded. Nothing to authenticate"); > + return; > + } > + > + vma = i915_gem_object_ggtt_pin(huc->huc_fw.uc_fw_obj, NULL, 0, 0, 0); > + if (IS_ERR(vma)) { > + DRM_DEBUG_DRIVER("pin failed %d\n", (int)PTR_ERR(vma)); > + return; > + } > + > + > + /* Invalidate GuC TLB to let GuC take the latest updates to GTT. */ > + I915_WRITE(GEN8_GTCR, GEN8_GTCR_INVALIDATE); > + > + /* Specify auth action and where public signature is. */ > + data[0] = HOST2GUC_ACTION_AUTHENTICATE_HUC; > + data[1] = i915_ggtt_offset(vma) + huc->huc_fw.rsa_offset; > + > + ret = host2guc_action(guc, data, ARRAY_SIZE(data)); > + if (ret) { > + DRM_ERROR("HuC: GuC did not ack Auth request\n"); > + goto out; > + } > + > + /* Check authentication status, it should be done by now */ > + ret = wait_for((I915_READ(HUC_STATUS2) & HUC_FW_VERIFIED) > 0, 50); > + if (ret) { > + DRM_ERROR("HuC: Authentication failed\n"); > + goto out; > + } > + > +out: > + i915_vma_unpin(vma); > +} > diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h > index 4647e41..ffdd5b9 100644 > --- a/drivers/gpu/drm/i915/intel_guc.h > +++ b/drivers/gpu/drm/i915/intel_guc.h > @@ -197,5 +197,5 @@ void i915_guc_flush_logs(struct drm_i915_private *dev_priv); > void i915_guc_register(struct drm_i915_private *dev_priv); > void i915_guc_unregister(struct drm_i915_private *dev_priv); > int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val); > - > +void intel_guc_auth_huc(struct drm_device *dev); > #endif > diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h b/drivers/gpu/drm/i915/intel_guc_fwif.h > index c2a7fdd..99a092d 100644 > --- a/drivers/gpu/drm/i915/intel_guc_fwif.h > +++ b/drivers/gpu/drm/i915/intel_guc_fwif.h > @@ -513,6 +513,7 @@ enum host2guc_action { > HOST2GUC_ACTION_EXIT_S_STATE = 0x502, > HOST2GUC_ACTION_SLPC_REQUEST = 0x3003, > HOST2GUC_ACTION_UK_LOG_ENABLE_LOGGING = 0x0E000, > + HOST2GUC_ACTION_AUTHENTICATE_HUC = 0x4000, > HOST2GUC_ACTION_LIMIT > }; > > diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c > index dc79968..11e3bbb 100644 > --- a/drivers/gpu/drm/i915/intel_guc_loader.c > +++ b/drivers/gpu/drm/i915/intel_guc_loader.c > @@ -531,6 +531,8 @@ int intel_guc_setup(struct drm_device *dev) > intel_uc_fw_status_repr(guc_fw->fetch_status), > intel_uc_fw_status_repr(guc_fw->load_status)); > > + intel_guc_auth_huc(dev); > + > if (i915.enable_guc_submission) { > if (i915.guc_log_level >= 0) > gen9_enable_guc_interrupts(dev_priv); > -- > 2.7.4 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c index 99dc5d9..936eefc 100644 --- a/drivers/gpu/drm/i915/i915_guc_submission.c +++ b/drivers/gpu/drm/i915/i915_guc_submission.c @@ -27,6 +27,7 @@ #include <linux/relay.h> #include "i915_drv.h" #include "intel_guc.h" +#include "intel_huc.h" /** * DOC: GuC-based command submission @@ -1713,3 +1714,65 @@ int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val) return ret; } + +/** + * intel_guc_auth_huc() - authenticate ucode + * @dev: the drm device + * + * Triggers a HuC fw authentication request to the GuC via host-2-guc + * interface. + */ +void intel_guc_auth_huc(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_guc *guc = &dev_priv->guc; + struct intel_huc *huc = &dev_priv->huc; + struct i915_vma *vma; + int ret; + u32 data[2]; + + /* Bypass the case where there is no HuC firmware */ + if (huc->huc_fw.fetch_status == UC_FIRMWARE_NONE || + huc->huc_fw.load_status == UC_FIRMWARE_NONE) + return; + + if (guc->guc_fw.load_status != UC_FIRMWARE_SUCCESS) { + DRM_ERROR("HuC: GuC fw wasn't loaded. Can't authenticate"); + return; + } + + if (huc->huc_fw.load_status != UC_FIRMWARE_SUCCESS) { + DRM_ERROR("HuC: fw wasn't loaded. Nothing to authenticate"); + return; + } + + vma = i915_gem_object_ggtt_pin(huc->huc_fw.uc_fw_obj, NULL, 0, 0, 0); + if (IS_ERR(vma)) { + DRM_DEBUG_DRIVER("pin failed %d\n", (int)PTR_ERR(vma)); + return; + } + + + /* Invalidate GuC TLB to let GuC take the latest updates to GTT. */ + I915_WRITE(GEN8_GTCR, GEN8_GTCR_INVALIDATE); + + /* Specify auth action and where public signature is. */ + data[0] = HOST2GUC_ACTION_AUTHENTICATE_HUC; + data[1] = i915_ggtt_offset(vma) + huc->huc_fw.rsa_offset; + + ret = host2guc_action(guc, data, ARRAY_SIZE(data)); + if (ret) { + DRM_ERROR("HuC: GuC did not ack Auth request\n"); + goto out; + } + + /* Check authentication status, it should be done by now */ + ret = wait_for((I915_READ(HUC_STATUS2) & HUC_FW_VERIFIED) > 0, 50); + if (ret) { + DRM_ERROR("HuC: Authentication failed\n"); + goto out; + } + +out: + i915_vma_unpin(vma); +} diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h index 4647e41..ffdd5b9 100644 --- a/drivers/gpu/drm/i915/intel_guc.h +++ b/drivers/gpu/drm/i915/intel_guc.h @@ -197,5 +197,5 @@ void i915_guc_flush_logs(struct drm_i915_private *dev_priv); void i915_guc_register(struct drm_i915_private *dev_priv); void i915_guc_unregister(struct drm_i915_private *dev_priv); int i915_guc_log_control(struct drm_i915_private *dev_priv, u64 control_val); - +void intel_guc_auth_huc(struct drm_device *dev); #endif diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h b/drivers/gpu/drm/i915/intel_guc_fwif.h index c2a7fdd..99a092d 100644 --- a/drivers/gpu/drm/i915/intel_guc_fwif.h +++ b/drivers/gpu/drm/i915/intel_guc_fwif.h @@ -513,6 +513,7 @@ enum host2guc_action { HOST2GUC_ACTION_EXIT_S_STATE = 0x502, HOST2GUC_ACTION_SLPC_REQUEST = 0x3003, HOST2GUC_ACTION_UK_LOG_ENABLE_LOGGING = 0x0E000, + HOST2GUC_ACTION_AUTHENTICATE_HUC = 0x4000, HOST2GUC_ACTION_LIMIT }; diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c index dc79968..11e3bbb 100644 --- a/drivers/gpu/drm/i915/intel_guc_loader.c +++ b/drivers/gpu/drm/i915/intel_guc_loader.c @@ -531,6 +531,8 @@ int intel_guc_setup(struct drm_device *dev) intel_uc_fw_status_repr(guc_fw->fetch_status), intel_uc_fw_status_repr(guc_fw->load_status)); + intel_guc_auth_huc(dev); + if (i915.enable_guc_submission) { if (i915.guc_log_level >= 0) gen9_enable_guc_interrupts(dev_priv);