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| author |   Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2022-03-29 10:02:04 +0100 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2022-03-30 12:04:01 +0100 |
| commit | a7f46d5b91a5eb005e9719cae55eb08774f59201 (patch) | |
| tree | 5efa4c5ca64a253950c76e8335dc9c53cf8fce7a /drivers/gpu/drm/i915/i915_utils.c | |
| parent | drm/i915/dmc: fix i915_reg_t usage (diff) | |
| download | linux-dev-a7f46d5b91a5eb005e9719cae55eb08774f59201.tar.xz linux-dev-a7f46d5b91a5eb005e9719cae55eb08774f59201.zip | |
drm/i915: Move intel_vtd_active and run_as_guest to i915_utils
Continuation of the effort to declutter i915_drv.h.
Also, component specific helpers which consult the iommu/virtualization
helpers moved to respective component source/header files as appropriate.
v2:
* s/dev_priv/i915/ in intel_scanout_needs_vtd_wa. (Lucas)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220329090204.2324499-1-tvrtko.ursulin@linux.intel.com
[tursulin: fixup conflict in i915_drv.h]
Diffstat (limited to 'drivers/gpu/drm/i915/i915_utils.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_utils.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_utils.c b/drivers/gpu/drm/i915/i915_utils.c index f9e780dee9de..29fd02bf5ea8 100644 --- a/drivers/gpu/drm/i915/i915_utils.c +++ b/drivers/gpu/drm/i915/i915_utils.c @@ -3,6 +3,8 @@ * Copyright © 2019 Intel Corporation */ +#include <linux/device.h> + #include <drm/drm_drv.h> #include "i915_drv.h" @@ -114,3 +116,12 @@ void set_timer_ms(struct timer_list *t, unsigned long timeout) /* Keep t->expires = 0 reserved to indicate a canceled timer. */ mod_timer(t, jiffies + timeout ?: 1); } + +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(); +} |