3b918f4f0c
After recent discussions with Mesa folks, it was requested
that we optimize i915's GET_PARAM for the PXP_STATUS without
changing the UAPI spec.
Add these additional optimizations:
- If any PXP initializatoin flow failed, then ensure that
we catch it so that we can change the returned PXP_STATUS
from "2" (i.e. 'PXP is supported but not yet ready')
to "-ENODEV". This typically should not happen and if it
does, we have a platform configuration issue.
- If a PXP arbitration session creation event failed
due to incorrect firmware version or blocking SOC fusing
or blocking BIOS configuration (platform reasons that won't
change if we retry), then reflect that blockage by also
returning -ENODEV in the GET_PARAM:PXP_STATUS.
- GET_PARAM:PXP_STATUS should not wait at all if PXP is
supported but non-i915 dependencies (component-driver /
firmware) we are still pending to complete the init flows.
In this case, just return "2" immediately (i.e. 'PXP is
supported but not yet ready').
Difference from prio revs:
v3: - Rebase with latest tip that has pulled in setting the
gsc fw load to fail if proxy init fails.
v2: - Use a #define for the default readiness timeout (Vivaik).
- Improve comments around the failing of proxy-init.
v1: - Change the commit msg style to be imperative. (Jani)
- Rename timeout to timeout_ms. (Jani)
- Fix is_fw_err_platform_config to use higher order
param (pxp) first. (Jani)
Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Reviewed-by: Balasubrawmanian, Vivaik <vivaik.balasubrawmanian@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230802182550.1592926-1-alan.previn.teres.alexis@intel.com
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright(c) 2020, Intel Corporation. All rights reserved.
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*/
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#ifndef __INTEL_PXP_H__
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#define __INTEL_PXP_H__
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#include <linux/errno.h>
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#include <linux/types.h>
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struct drm_i915_gem_object;
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struct drm_i915_private;
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struct intel_pxp;
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bool intel_pxp_is_supported(const struct intel_pxp *pxp);
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bool intel_pxp_is_enabled(const struct intel_pxp *pxp);
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bool intel_pxp_is_active(const struct intel_pxp *pxp);
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int intel_pxp_init(struct drm_i915_private *i915);
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void intel_pxp_fini(struct drm_i915_private *i915);
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void intel_pxp_init_hw(struct intel_pxp *pxp);
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void intel_pxp_fini_hw(struct intel_pxp *pxp);
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void intel_pxp_mark_termination_in_progress(struct intel_pxp *pxp);
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void intel_pxp_tee_end_arb_fw_session(struct intel_pxp *pxp, u32 arb_session_id);
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int intel_pxp_get_readiness_status(struct intel_pxp *pxp, int timeout_ms);
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int intel_pxp_get_backend_timeout_ms(struct intel_pxp *pxp);
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int intel_pxp_start(struct intel_pxp *pxp);
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void intel_pxp_end(struct intel_pxp *pxp);
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int intel_pxp_key_check(struct intel_pxp *pxp,
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struct drm_i915_gem_object *obj,
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bool assign);
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void intel_pxp_invalidate(struct intel_pxp *pxp);
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#endif /* __INTEL_PXP_H__ */
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