Contributors: 14
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Chris Wilson |
56 |
25.11% |
7 |
21.88% |
| Michal Wajdeczko |
37 |
16.59% |
5 |
15.62% |
| Ville Syrjälä |
28 |
12.56% |
1 |
3.12% |
| Michał Winiarski |
28 |
12.56% |
2 |
6.25% |
| Jani Nikula |
24 |
10.76% |
4 |
12.50% |
| Robert Beckett |
13 |
5.83% |
1 |
3.12% |
| Janusz Krzysztofik |
10 |
4.48% |
3 |
9.38% |
| Imre Deak |
7 |
3.14% |
2 |
6.25% |
| Tvrtko A. Ursulin |
7 |
3.14% |
2 |
6.25% |
| José Roberto de Souza |
4 |
1.79% |
1 |
3.12% |
| Dave Airlie |
4 |
1.79% |
1 |
3.12% |
| Thomas Zimmermann |
3 |
1.35% |
1 |
3.12% |
| Eric Anholt |
1 |
0.45% |
1 |
3.12% |
| Mika Kuoppala |
1 |
0.45% |
1 |
3.12% |
| Total |
223 |
|
32 |
|
// SPDX-License-Identifier: MIT
/*
* Copyright © 2019 Intel Corporation
*/
#include <linux/device.h>
#include <drm/drm_drv.h>
#include "i915_drv.h"
#include "i915_reg.h"
#include "i915_utils.h"
void add_taint_for_CI(struct drm_i915_private *i915, unsigned int taint)
{
drm_notice(&i915->drm, "CI tainted: %#x by %pS\n",
taint, __builtin_return_address(0));
/* Failures that occur during fault injection testing are expected */
if (!i915_error_injected())
__add_taint_for_CI(taint);
}
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
static unsigned int i915_probe_fail_count;
int __i915_inject_probe_error(struct drm_i915_private *i915, int err,
const char *func, int line)
{
if (i915_probe_fail_count >= i915_modparams.inject_probe_failure)
return 0;
if (++i915_probe_fail_count < i915_modparams.inject_probe_failure)
return 0;
drm_info(&i915->drm, "Injecting failure %d at checkpoint %u [%s:%d]\n",
err, i915_modparams.inject_probe_failure, func, line);
i915_modparams.inject_probe_failure = 0;
return err;
}
bool i915_error_injected(void)
{
return i915_probe_fail_count && !i915_modparams.inject_probe_failure;
}
#endif
bool i915_vtd_active(struct drm_i915_private *i915)
{
if (device_iommu_mapped(i915->drm.dev))
return true;
/* Running as a guest, we assume the host is enforcing VT'd */
return i915_run_as_guest();
}
bool i915_direct_stolen_access(struct drm_i915_private *i915)
{
/*
* Wa_22018444074
*
* Access via BAR can hang MTL, go directly to GSM/DSM,
* except for VM guests which won't have access to it.
*
* Normally this would not work but on MTL the system firmware
* should have relaxed the access permissions sufficiently.
* 0x138914==0x1 indicates that the firmware has done its job.
*/
return IS_METEORLAKE(i915) && !i915_run_as_guest() &&
intel_uncore_read(&i915->uncore, MTL_PCODE_STOLEN_ACCESS) == STOLEN_ACCESS_ALLOWED;
}