diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_huc.h')
-rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_huc.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.h b/drivers/gpu/drm/i915/gt/uc/intel_huc.h new file mode 100644 index 0000000000..ba5cb08e9e --- /dev/null +++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.h @@ -0,0 +1,101 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2014-2019 Intel Corporation + */ + +#ifndef _INTEL_HUC_H_ +#define _INTEL_HUC_H_ + +#include "i915_reg_defs.h" +#include "i915_sw_fence.h" +#include "intel_uc_fw.h" +#include "intel_huc_fw.h" + +#include <linux/notifier.h> +#include <linux/hrtimer.h> + +struct bus_type; +struct i915_vma; + +enum intel_huc_delayed_load_status { + INTEL_HUC_WAITING_ON_GSC = 0, + INTEL_HUC_WAITING_ON_PXP, + INTEL_HUC_DELAYED_LOAD_ERROR, +}; + +enum intel_huc_authentication_type { + INTEL_HUC_AUTH_BY_GUC = 0, + INTEL_HUC_AUTH_BY_GSC, + INTEL_HUC_AUTH_MAX_MODES +}; + +struct intel_huc { + /* Generic uC firmware management */ + struct intel_uc_fw fw; + + /* HuC-specific additions */ + struct { + i915_reg_t reg; + u32 mask; + u32 value; + } status[INTEL_HUC_AUTH_MAX_MODES]; + + struct { + struct i915_sw_fence fence; + struct hrtimer timer; + struct notifier_block nb; + enum intel_huc_delayed_load_status status; + } delayed_load; + + /* for load via GSCCS */ + struct i915_vma *heci_pkt; + + bool loaded_via_gsc; +}; + +int intel_huc_sanitize(struct intel_huc *huc); +void intel_huc_init_early(struct intel_huc *huc); +int intel_huc_init(struct intel_huc *huc); +void intel_huc_fini(struct intel_huc *huc); +void intel_huc_suspend(struct intel_huc *huc); +int intel_huc_auth(struct intel_huc *huc, enum intel_huc_authentication_type type); +int intel_huc_wait_for_auth_complete(struct intel_huc *huc, + enum intel_huc_authentication_type type); +bool intel_huc_is_authenticated(struct intel_huc *huc, + enum intel_huc_authentication_type type); +int intel_huc_check_status(struct intel_huc *huc); +void intel_huc_update_auth_status(struct intel_huc *huc); + +void intel_huc_register_gsc_notifier(struct intel_huc *huc, const struct bus_type *bus); +void intel_huc_unregister_gsc_notifier(struct intel_huc *huc, const struct bus_type *bus); + +static inline bool intel_huc_is_supported(struct intel_huc *huc) +{ + return intel_uc_fw_is_supported(&huc->fw); +} + +static inline bool intel_huc_is_wanted(struct intel_huc *huc) +{ + return intel_uc_fw_is_enabled(&huc->fw); +} + +static inline bool intel_huc_is_used(struct intel_huc *huc) +{ + GEM_BUG_ON(__intel_uc_fw_status(&huc->fw) == INTEL_UC_FIRMWARE_SELECTED); + return intel_uc_fw_is_available(&huc->fw); +} + +static inline bool intel_huc_is_loaded_by_gsc(const struct intel_huc *huc) +{ + return huc->loaded_via_gsc; +} + +static inline bool intel_huc_wait_required(struct intel_huc *huc) +{ + return intel_huc_is_used(huc) && intel_huc_is_loaded_by_gsc(huc) && + !intel_huc_is_authenticated(huc, INTEL_HUC_AUTH_BY_GSC); +} + +void intel_huc_load_status(struct intel_huc *huc, struct drm_printer *p); + +#endif |