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df7d085b58
Move timer related utilities from i915_utils.[ch] to separate new files i915_timer_util.[ch]. Clean up related includes. Note: Arguably none of this should exist in i915 in the first place. At least isolate it better. Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://lore.kernel.org/r/0a83d9489626121dcefcd4c1a05317399b5708f3.1757582214.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#include <linux/device.h>
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#include <drm/drm_drv.h>
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#include "i915_drv.h"
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#include "i915_reg.h"
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#include "i915_utils.h"
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void add_taint_for_CI(struct drm_i915_private *i915, unsigned int taint)
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{
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drm_notice(&i915->drm, "CI tainted: %#x by %pS\n",
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taint, __builtin_return_address(0));
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/* Failures that occur during fault injection testing are expected */
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if (!i915_error_injected())
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__add_taint_for_CI(taint);
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}
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
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static unsigned int i915_probe_fail_count;
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int __i915_inject_probe_error(struct drm_i915_private *i915, int err,
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const char *func, int line)
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{
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if (i915_probe_fail_count >= i915_modparams.inject_probe_failure)
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return 0;
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if (++i915_probe_fail_count < i915_modparams.inject_probe_failure)
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return 0;
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drm_info(&i915->drm, "Injecting failure %d at checkpoint %u [%s:%d]\n",
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err, i915_modparams.inject_probe_failure, func, line);
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i915_modparams.inject_probe_failure = 0;
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return err;
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}
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bool i915_error_injected(void)
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{
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return i915_probe_fail_count && !i915_modparams.inject_probe_failure;
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}
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#endif
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bool i915_vtd_active(struct drm_i915_private *i915)
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{
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if (device_iommu_mapped(i915->drm.dev))
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return true;
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/* Running as a guest, we assume the host is enforcing VT'd */
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return i915_run_as_guest();
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}
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bool i915_direct_stolen_access(struct drm_i915_private *i915)
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{
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/*
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* Wa_22018444074
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*
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* Access via BAR can hang MTL, go directly to GSM/DSM,
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* except for VM guests which won't have access to it.
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*
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* Normally this would not work but on MTL the system firmware
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* should have relaxed the access permissions sufficiently.
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* 0x138914==0x1 indicates that the firmware has done its job.
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*/
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return IS_METEORLAKE(i915) && !i915_run_as_guest() &&
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intel_uncore_read(&i915->uncore, MTL_PCODE_STOLEN_ACCESS) == STOLEN_ACCESS_ALLOWED;
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}
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