On Wed, 2022-11-30 at 09:32 -0800, Matt Roper wrote:
> On Tue, Nov 29, 2022 at 06:02:45PM -0800, Alan Previn wrote:
> > Starting with MTL, there will be two GT-tiles, a render and media
> > tile. PXP as a service for supporting workloads with protected
>
> Drive-by comment: we've been a bit inconsistent about terminology in
> the past, but my understanding is that we're trying to standardize on
> "GT" for the unit that MTL has two of, and keeping the term "tile"
> for
> the PVC-style unit that is a combination of (GT+lmem).
I agree that this gets really confusing... but it will be hard to
standardize this I'm afraid. Specially when we do the PVC-style-tile a
intel_gt struct and we apparently are doing the same on MTL, no?!
So, unless the topology gets organized in the code with a standard
name, it is hard to demand everyone to use the same one.
Besides that whenever we were discussing the pvc's one we all had
agreed that the term "tile" was bad, hence we focused on keep the
intel_gt ready for that.
Whenever I hear tile I think of the display buffer organization...
and there are other "tiles" examples iirc.
>
>
> Matt
>
> > contexts and protected buffers can be subscribed by process
> > workloads on any tile. However, depending on the platform,
> > only one of the tiles is used for control events pertaining to PXP
> > operation (such as creating the arbitration session and session
> > tear-down).
> >
> > PXP as a global feature is accessible via batch buffer instructions
> > on any engine/tile and the coherency across tiles is handled
> > implicitly
> > by the HW. In fact, for the foreseeable future, we are expecting
> > this
> > single-control-tile for the PXP subsystem.
> >
> > In MTL, it's the standalone media tile (not the root tile) because
> > it contains the VDBOX and KCR engine (among the assets PXP relies
> > on
> > for those events).
> >
> > Looking at the current code design, each tile is represented by the
> > intel_gt structure while the intel_pxp structure currently hangs
> > off the
> > intel_gt structure.
> >
> > Keeping the intel_pxp structure within the intel_gt structure makes
> > some
> > internal functionalities more straight forward but adds code
> > complexity to
> > code readibility and maintainibility to many external-to-pxp
> > subsystems
> > which may need to pick the correct intel_gt structure. An example
> > of this
> > would be the intel_pxp_is_active or intel_pxp_is_enabled
> > functionality
> > which should be viewed as a global level inquiry, not a per-gt
> > inquiry.
> >
> > That said, this series promotes the intel_pxp structure into the
> > drm_i915_private structure making it a top-level subsystem and the
> > PXP
> > subsystem will select the control gt internally and keep a pointer
> > to
> > it for internal reference.
> >
> > Changes from prior revs:
> > v5: - Switch from series to single patch (Rodrigo).
> > - change function name from pxp_get_kcr_owner_gt to
> > pxp_get_ctrl_gt.
> > - Fix CI BAT failure by removing redundant call to
> > intel_pxp_fini
> > from driver-remove.
> > - NOTE: remaining open still persists on using ptr-to-ptr
> > and back-ptr.
> > v4: - Instead of maintaining intel_pxp as an intel_gt structure
> > member
> > and creating a number of convoluted helpers that takes in
> > i915 as
> > input and redirects to the correct intel_gt or takes any
> > intel_gt
> > and internally replaces with the correct intel_gt, promote
> > it to
> > be a top-level i915 structure.
> > v3: - Rename gt level helper functions to "intel_pxp_is_enabled/
> > supported/ active_on_gt" (Daniele)
> > - Upgrade _gt_supports_pxp to replace what was
> > intel_gtpxp_is
> > supported as the new intel_pxp_is_supported_on_gt to check
> > for
> > PXP feature support vs the tee support for huc
> > authentication.
> > Fix pxp-debugfs-registration to use only the former to
> > decide
> > support. (Daniele)
> > - Couple minor optimizations.
> > v2: - Avoid introduction of new device info or gt variables and
> > use
> > existing checks / macros to differentiate the correct GT-
> > >PXP
> > control ownership (Daniele Ceraolo Spurio)
> > - Don't reuse the updated global-checkers for per-GT callers
> > (such
> > as other files within PXP) to avoid unnecessary GT-
> > reparsing,
> > expose a replacement helper like the prior ones.
> > (Daniele).
> > v1: - Add one more patch to the series for the intel_pxp
> > suspend/resume
> > for similar refactoring
> >
> > Signed-off-by: Alan Previn <alan.previn.teres.alexis@xxxxxxxxx>
> > ---
> > .../drm/i915/display/skl_universal_plane.c | 2 +-
> > drivers/gpu/drm/i915/gem/i915_gem_context.c | 6 +-
> > drivers/gpu/drm/i915/gem/i915_gem_create.c | 2 +-
> > .../gpu/drm/i915/gem/i915_gem_execbuffer.c | 2 +-
> > drivers/gpu/drm/i915/gt/intel_gt.c | 5 --
> > drivers/gpu/drm/i915/gt/intel_gt_debugfs.c | 1 -
> > drivers/gpu/drm/i915/gt/intel_gt_irq.c | 2 +-
> > drivers/gpu/drm/i915/gt/intel_gt_pm.c | 8 ---
> > drivers/gpu/drm/i915/gt/intel_gt_types.h | 3 -
> > drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c | 2 +-
> > drivers/gpu/drm/i915/i915_driver.c | 18 +++++
> > drivers/gpu/drm/i915/i915_drv.h | 3 +
> > drivers/gpu/drm/i915/pxp/intel_pxp.c | 72 ++++++++++++++-
> > ----
> > drivers/gpu/drm/i915/pxp/intel_pxp.h | 6 +-
> > drivers/gpu/drm/i915/pxp/intel_pxp_cmd.c | 8 ++-
> > drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.c | 41 +++++++----
> > drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.h | 4 +-
> > drivers/gpu/drm/i915/pxp/intel_pxp_irq.c | 10 ++-
> > drivers/gpu/drm/i915/pxp/intel_pxp_pm.c | 4 +-
> > drivers/gpu/drm/i915/pxp/intel_pxp_tee.c | 8 ++-
> > drivers/gpu/drm/i915/pxp/intel_pxp_types.h | 11 +++
> > 21 files changed, 148 insertions(+), 70 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c
> > b/drivers/gpu/drm/i915/display/skl_universal_plane.c
> > index 76490cc59d8f..4b79c2d2d617 100644
> > --- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
> > +++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
> > @@ -1848,7 +1848,7 @@ static bool bo_has_valid_encryption(struct
> > drm_i915_gem_object *obj)
> > {
> > struct drm_i915_private *i915 = to_i915(obj->base.dev);
> >
> > - return intel_pxp_key_check(&to_gt(i915)->pxp, obj, false)
> > == 0;
> > + return intel_pxp_key_check(i915->pxp, obj, false) == 0;
> > }
> >
> > static bool pxp_is_borked(struct drm_i915_gem_object *obj)
> > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c
> > b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> > index 7f2831efc798..46e71f62fcec 100644
> > --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
> > +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> > @@ -257,7 +257,7 @@ static int proto_context_set_protected(struct
> > drm_i915_private *i915,
> >
> > if (!protected) {
> > pc->uses_protected_content = false;
> > - } else if (!intel_pxp_is_enabled(&to_gt(i915)->pxp)) {
> > + } else if (!intel_pxp_is_enabled(i915->pxp)) {
> > ret = -ENODEV;
> > } else if ((pc->user_flags & BIT(UCONTEXT_RECOVERABLE)) ||
> > !(pc->user_flags & BIT(UCONTEXT_BANNABLE))) {
> > @@ -271,8 +271,8 @@ static int proto_context_set_protected(struct
> > drm_i915_private *i915,
> > */
> > pc->pxp_wakeref = intel_runtime_pm_get(&i915-
> > >runtime_pm);
> >
> > - if (!intel_pxp_is_active(&to_gt(i915)->pxp))
> > - ret = intel_pxp_start(&to_gt(i915)->pxp);
> > + if (!intel_pxp_is_active(i915->pxp))
> > + ret = intel_pxp_start(i915->pxp);
> > }
> >
> > return ret;
> > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_create.c
> > b/drivers/gpu/drm/i915/gem/i915_gem_create.c
> > index 33673fe7ee0a..005a7f842784 100644
> > --- a/drivers/gpu/drm/i915/gem/i915_gem_create.c
> > +++ b/drivers/gpu/drm/i915/gem/i915_gem_create.c
> > @@ -384,7 +384,7 @@ static int ext_set_protected(struct
> > i915_user_extension __user *base, void *data
> > if (ext.flags)
> > return -EINVAL;
> >
> > - if (!intel_pxp_is_enabled(&to_gt(ext_data->i915)->pxp))
> > + if (!intel_pxp_is_enabled(ext_data->i915->pxp))
> > return -ENODEV;
> >
> > ext_data->flags |= I915_BO_PROTECTED;
> > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> > b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> > index 29e9e8d5b6fe..ed74d173a092 100644
> > --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> > +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> > @@ -869,7 +869,7 @@ static struct i915_vma *eb_lookup_vma(struct
> > i915_execbuffer *eb, u32 handle)
> > */
> > if (i915_gem_context_uses_protected_content(eb-
> > >gem_context) &&
> > i915_gem_object_is_protected(obj)) {
> > - err = intel_pxp_key_check(&vm->gt->pxp,
> > obj, true);
> > + err = intel_pxp_key_check(vm->gt->i915-
> > >pxp, obj, true);
> > if (err) {
> > i915_gem_object_put(obj);
> > return ERR_PTR(err);
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c
> > b/drivers/gpu/drm/i915/gt/intel_gt.c
> > index 7ef0edb2e37c..1fd6b34ecda3 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gt.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_gt.c
> > @@ -8,7 +8,6 @@
> >
> > #include "gem/i915_gem_internal.h"
> > #include "gem/i915_gem_lmem.h"
> > -#include "pxp/intel_pxp.h"
> >
> > #include "i915_drv.h"
> > #include "i915_perf_oa_regs.h"
> > @@ -753,8 +752,6 @@ int intel_gt_init(struct intel_gt *gt)
> >
> > intel_migrate_init(>->migrate, gt);
> >
> > - intel_pxp_init(>->pxp);
> > -
> > goto out_fw;
> > err_gt:
> > __intel_gt_disable(gt);
> > @@ -794,8 +791,6 @@ void intel_gt_driver_unregister(struct intel_gt
> > *gt)
> > intel_rps_driver_unregister(>->rps);
> > intel_gsc_fini(>->gsc);
> >
> > - intel_pxp_fini(>->pxp);
> > -
> > /*
> > * Upon unregistering the device to prevent any new users,
> > cancel
> > * all in-flight requests so that we can quickly unbind the
> > active
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c
> > b/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c
> > index dd53641f3637..7876f4c3d0f1 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c
> > @@ -99,7 +99,6 @@ void intel_gt_debugfs_register(struct intel_gt
> > *gt)
> > intel_sseu_debugfs_register(gt, root);
> >
> > intel_uc_debugfs_register(>->uc, root);
> > - intel_pxp_debugfs_register(>->pxp, root);
> > }
> >
> > void intel_gt_debugfs_register_files(struct dentry *root,
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_irq.c
> > b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
> > index 6f6b9e04d916..8fac2660e16b 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gt_irq.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
> > @@ -76,7 +76,7 @@ gen11_other_irq_handler(struct intel_gt *gt,
> > const u8 instance,
> > return gen11_rps_irq_handler(&media_gt->rps, iir);
> >
> > if (instance == OTHER_KCR_INSTANCE)
> > - return intel_pxp_irq_handler(>->pxp, iir);
> > + return intel_pxp_irq_handler(gt->i915->pxp, iir);
> >
> > if (instance == OTHER_GSC_INSTANCE)
> > return intel_gsc_irq_handler(gt, iir);
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
> > b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
> > index 16db85fab0b1..c065950d0bad 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
> > @@ -304,8 +304,6 @@ int intel_gt_resume(struct intel_gt *gt)
> >
> > intel_uc_resume(>->uc);
> >
> > - intel_pxp_resume(>->pxp);
> > -
> > user_forcewake(gt, false);
> >
> > out_fw:
> > @@ -339,8 +337,6 @@ void intel_gt_suspend_prepare(struct intel_gt
> > *gt)
> > {
> > user_forcewake(gt, true);
> > wait_for_suspend(gt);
> > -
> > - intel_pxp_suspend_prepare(>->pxp);
> > }
> >
> > static suspend_state_t pm_suspend_target(void)
> > @@ -365,7 +361,6 @@ void intel_gt_suspend_late(struct intel_gt *gt)
> > GEM_BUG_ON(gt->awake);
> >
> > intel_uc_suspend(>->uc);
> > - intel_pxp_suspend(>->pxp);
> >
> > /*
> > * On disabling the device, we want to turn off HW access
> > to memory
> > @@ -393,7 +388,6 @@ void intel_gt_suspend_late(struct intel_gt *gt)
> >
> > void intel_gt_runtime_suspend(struct intel_gt *gt)
> > {
> > - intel_pxp_runtime_suspend(>->pxp);
> > intel_uc_runtime_suspend(>->uc);
> >
> > GT_TRACE(gt, "\n");
> > @@ -411,8 +405,6 @@ int intel_gt_runtime_resume(struct intel_gt
> > *gt)
> > if (ret)
> > return ret;
> >
> > - intel_pxp_runtime_resume(>->pxp);
> > -
> > return 0;
> > }
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h
> > b/drivers/gpu/drm/i915/gt/intel_gt_types.h
> > index c1d9cd255e06..07ebeffbc8bd 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gt_types.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h
> > @@ -30,7 +30,6 @@
> > #include "intel_rps_types.h"
> > #include "intel_migrate_types.h"
> > #include "intel_wakeref.h"
> > -#include "pxp/intel_pxp_types.h"
> > #include "intel_wopcm.h"
> >
> > struct drm_i915_private;
> > @@ -267,8 +266,6 @@ struct intel_gt {
> > u8 wb_index; /* Only used on HAS_L3_CCS_READ()
> > platforms */
> > } mocs;
> >
> > - struct intel_pxp pxp;
> > -
> > /* gt/gtN sysfs */
> > struct kobject sysfs_gt;
> >
> > diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
> > b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
> > index 4f246416db17..534b0aa43316 100644
> > --- a/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
> > +++ b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
> > @@ -32,7 +32,7 @@ int intel_huc_fw_load_and_auth_via_gsc(struct
> > intel_huc *huc)
> >
> > GEM_WARN_ON(intel_uc_fw_is_loaded(&huc->fw));
> >
> > - ret = intel_pxp_huc_load_and_auth(&huc_to_gt(huc)->pxp);
> > + ret = intel_pxp_huc_load_and_auth(huc_to_gt(huc)->i915-
> > >pxp);
> > if (ret)
> > return ret;
> >
> > diff --git a/drivers/gpu/drm/i915/i915_driver.c
> > b/drivers/gpu/drm/i915/i915_driver.c
> > index 69103ae37779..f9d52133ee06 100644
> > --- a/drivers/gpu/drm/i915/i915_driver.c
> > +++ b/drivers/gpu/drm/i915/i915_driver.c
> > @@ -73,6 +73,8 @@
> > #include "gt/intel_gt_pm.h"
> > #include "gt/intel_rc6.h"
> >
> > +#include "pxp/intel_pxp.h"
> > +#include "pxp/intel_pxp_debugfs.h"
> > #include "pxp/intel_pxp_pm.h"
> >
> > #include "i915_file_private.h"
> > @@ -763,6 +765,8 @@ static void i915_driver_register(struct
> > drm_i915_private *dev_priv)
> > for_each_gt(gt, dev_priv, i)
> > intel_gt_driver_register(gt);
> >
> > + intel_pxp_debugfs_register(dev_priv->pxp);
> > +
> > i915_hwmon_register(dev_priv);
> >
> > intel_display_driver_register(dev_priv);
> > @@ -794,6 +798,8 @@ static void i915_driver_unregister(struct
> > drm_i915_private *dev_priv)
> >
> > intel_display_driver_unregister(dev_priv);
> >
> > + intel_pxp_fini(&dev_priv->pxp);
> > +
> > for_each_gt(gt, dev_priv, i)
> > intel_gt_driver_unregister(gt);
> >
> > @@ -937,6 +943,8 @@ int i915_driver_probe(struct pci_dev *pdev,
> > const struct pci_device_id *ent)
> > if (ret)
> > goto out_cleanup_modeset2;
> >
> > + intel_pxp_init(&i915->pxp);
> > +
> > ret = intel_modeset_init(i915);
> > if (ret)
> > goto out_cleanup_gem;
> > @@ -1172,6 +1180,8 @@ static int i915_drm_prepare(struct drm_device
> > *dev)
> > {
> > struct drm_i915_private *i915 = to_i915(dev);
> >
> > + intel_pxp_suspend_prepare(i915->pxp);
> > +
> > /*
> > * NB intel_display_suspend() may issue new requests after
> > we've
> > * ostensibly marked the GPU as ready-to-sleep here. We
> > need to
> > @@ -1252,6 +1262,8 @@ static int i915_drm_suspend_late(struct
> > drm_device *dev, bool hibernation)
> >
> > disable_rpm_wakeref_asserts(rpm);
> >
> > + intel_pxp_suspend(dev_priv->pxp);
> > +
> > i915_gem_suspend_late(dev_priv);
> >
> > for_each_gt(gt, dev_priv, i)
> > @@ -1358,6 +1370,8 @@ static int i915_drm_resume(struct drm_device
> > *dev)
> >
> > i915_gem_resume(dev_priv);
> >
> > + intel_pxp_resume(dev_priv->pxp);
> > +
> > intel_modeset_init_hw(dev_priv);
> > intel_init_clock_gating(dev_priv);
> > intel_hpd_init(dev_priv);
> > @@ -1641,6 +1655,8 @@ static int intel_runtime_suspend(struct
> > device *kdev)
> > */
> > i915_gem_runtime_suspend(dev_priv);
> >
> > + intel_pxp_runtime_suspend(dev_priv->pxp);
> > +
> > for_each_gt(gt, dev_priv, i)
> > intel_gt_runtime_suspend(gt);
> >
> > @@ -1745,6 +1761,8 @@ static int intel_runtime_resume(struct device
> > *kdev)
> > for_each_gt(gt, dev_priv, i)
> > intel_gt_runtime_resume(gt);
> >
> > + intel_pxp_runtime_resume(dev_priv->pxp);
> > +
> > /*
> > * On VLV/CHV display interrupts are part of the display
> > * power well, so hpd is reinitialized from there. For
> > diff --git a/drivers/gpu/drm/i915/i915_drv.h
> > b/drivers/gpu/drm/i915/i915_drv.h
> > index a380db36d52c..679fa8a424d5 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.h
> > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > @@ -72,6 +72,7 @@ struct intel_encoder;
> > struct intel_limit;
> > struct intel_overlay_error_state;
> > struct vlv_s0ix_state;
> > +struct intel_pxp;
> >
> > #define I915_GEM_GPU_DOMAINS \
> > (I915_GEM_DOMAIN_RENDER | \
> > @@ -364,6 +365,8 @@ struct drm_i915_private {
> > struct file *mmap_singleton;
> > } gem;
> >
> > + struct intel_pxp *pxp;
> > +
> > u8 pch_ssc_use;
> >
> > /* For i915gm/i945gm vblank irq workaround */
> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c
> > b/drivers/gpu/drm/i915/pxp/intel_pxp.c
> > index 5efe61f67546..9cc01ecb7179 100644
> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp.c
> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c
> > @@ -3,13 +3,19 @@
> > * Copyright(c) 2020 Intel Corporation.
> > */
> > #include <linux/workqueue.h>
> > +
> > +#include "gem/i915_gem_context.h"
> > +
> > +#include "gt/intel_context.h"
> > +#include "gt/intel_gt.h"
> > +
> > +#include "i915_drv.h"
> > +
> > #include "intel_pxp.h"
> > #include "intel_pxp_irq.h"
> > #include "intel_pxp_session.h"
> > #include "intel_pxp_tee.h"
> > -#include "gem/i915_gem_context.h"
> > -#include "gt/intel_context.h"
> > -#include "i915_drv.h"
> > +#include "intel_pxp_types.h"
> >
> > /**
> > * DOC: PXP
> > @@ -39,9 +45,9 @@
> > * performed via the mei_pxp component module.
> > */
> >
> > -struct intel_gt *pxp_to_gt(const struct intel_pxp *pxp)
> > +struct intel_gt *pxp_to_gt(struct intel_pxp *pxp)
> > {
> > - return container_of(pxp, struct intel_gt, pxp);
> > + return pxp->ctrl_gt;
> > }
> >
> > bool intel_pxp_is_enabled(const struct intel_pxp *pxp)
> > @@ -138,31 +144,63 @@ static void pxp_init_full(struct intel_pxp
> > *pxp)
> > destroy_vcs_context(pxp);
> > }
> >
> > -void intel_pxp_init(struct intel_pxp *pxp)
> > +static struct intel_gt *pxp_get_ctrl_gt(struct drm_i915_private
> > *i915)
> > {
> > - struct intel_gt *gt = pxp_to_gt(pxp);
> > + struct intel_gt *gt = NULL;
> > + int i = 0;
> > +
> > + for_each_gt(gt, i915, i) {
> > + /* There can be only one GT that supports PXP */
> > + if (HAS_ENGINE(gt, GSC0))
> > + return gt;
> > + }
> >
> > /* we rely on the mei PXP module */
> > - if (!IS_ENABLED(CONFIG_INTEL_MEI_PXP))
> > - return;
> > + if (IS_ENABLED(CONFIG_INTEL_MEI_PXP))
> > + return &i915->gt0;
> > +
> > + return NULL;
> > +}
> > +
> > +int intel_pxp_init(struct intel_pxp **pxp_store_ptr)
> > +{
> > + struct intel_pxp *newpxp;
> > +
> > + newpxp = kzalloc(sizeof(*newpxp), GFP_KERNEL);
> > + if (!newpxp)
> > + return -ENOMEM;
> > +
> > + *pxp_store_ptr = newpxp;
> > +
> > + newpxp->i915 = container_of(pxp_store_ptr, struct
> > drm_i915_private, pxp);
> > + newpxp->ctrl_gt = pxp_get_ctrl_gt(newpxp->i915);
> > +
> > + if (!newpxp->ctrl_gt)
> > + return -ENODEV;
> >
> > /*
> > * If HuC is loaded by GSC but PXP is disabled, we can skip
> > the init of
> > * the full PXP session/object management and just init the
> > tee channel.
> > */
> > - if (HAS_PXP(gt->i915))
> > - pxp_init_full(pxp);
> > - else if (intel_huc_is_loaded_by_gsc(>->uc.huc) &&
> > intel_uc_uses_huc(>->uc))
> > - intel_pxp_tee_component_init(pxp);
> > + if (HAS_PXP(newpxp->i915))
> > + pxp_init_full(newpxp);
> > + else if (intel_huc_is_loaded_by_gsc(&newpxp->ctrl_gt-
> > >uc.huc) &&
> > + intel_uc_uses_huc(&newpxp->ctrl_gt->uc))
> > + intel_pxp_tee_component_init(newpxp);
> > +
> > + return 0;
> > }
> >
> > -void intel_pxp_fini(struct intel_pxp *pxp)
> > +void intel_pxp_fini(struct intel_pxp **pxp)
> > {
> > - pxp->arb_is_valid = false;
> > + (*pxp)->arb_is_valid = false;
> >
> > - intel_pxp_tee_component_fini(pxp);
> > + intel_pxp_tee_component_fini(*pxp);
> >
> > - destroy_vcs_context(pxp);
> > + destroy_vcs_context(*pxp);
> > +
> > + kfree(*pxp);
> > + pxp = NULL;
> > }
> >
> > void intel_pxp_mark_termination_in_progress(struct intel_pxp *pxp)
> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.h
> > b/drivers/gpu/drm/i915/pxp/intel_pxp.h
> > index 2da309088c6d..424e52bbd4f9 100644
> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp.h
> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.h
> > @@ -12,12 +12,12 @@
> > struct intel_pxp;
> > struct drm_i915_gem_object;
> >
> > -struct intel_gt *pxp_to_gt(const struct intel_pxp *pxp);
> > +struct intel_gt *pxp_to_gt(struct intel_pxp *pxp);
> > bool intel_pxp_is_enabled(const struct intel_pxp *pxp);
> > bool intel_pxp_is_active(const struct intel_pxp *pxp);
> >
> > -void intel_pxp_init(struct intel_pxp *pxp);
> > -void intel_pxp_fini(struct intel_pxp *pxp);
> > +int intel_pxp_init(struct intel_pxp **pxp);
> > +void intel_pxp_fini(struct intel_pxp **pxp);
> >
> > void intel_pxp_init_hw(struct intel_pxp *pxp);
> > void intel_pxp_fini_hw(struct intel_pxp *pxp);
> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_cmd.c
> > b/drivers/gpu/drm/i915/pxp/intel_pxp_cmd.c
> > index f41e45763d0d..0eee51c4a772 100644
> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_cmd.c
> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_cmd.c
> > @@ -3,9 +3,6 @@
> > * Copyright(c) 2020, Intel Corporation. All rights reserved.
> > */
> >
> > -#include "intel_pxp.h"
> > -#include "intel_pxp_cmd.h"
> > -#include "intel_pxp_session.h"
> > #include "gt/intel_context.h"
> > #include "gt/intel_engine_pm.h"
> > #include "gt/intel_gpu_commands.h"
> > @@ -13,6 +10,11 @@
> >
> > #include "i915_trace.h"
> >
> > +#include "intel_pxp.h"
> > +#include "intel_pxp_cmd.h"
> > +#include "intel_pxp_session.h"
> > +#include "intel_pxp_types.h"
> > +
> > /* stall until prior PXP and MFX/HCP/HUC objects are cmopleted */
> > #define MFX_WAIT_PXP (MFX_WAIT | \
> > MFX_WAIT_DW0_PXP_SYNC_CONTROL_FLAG | \
> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.c
> > b/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.c
> > index 4359e8be4101..652c00aefe3f 100644
> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.c
> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.c
> > @@ -9,10 +9,13 @@
> > #include <drm/drm_print.h>
> >
> > #include "gt/intel_gt_debugfs.h"
> > +
> > #include "i915_drv.h"
> > +
> > #include "intel_pxp.h"
> > #include "intel_pxp_debugfs.h"
> > #include "intel_pxp_irq.h"
> > +#include "intel_pxp_types.h"
> >
> > static int pxp_info_show(struct seq_file *m, void *data)
> > {
> > @@ -30,7 +33,19 @@ static int pxp_info_show(struct seq_file *m,
> > void *data)
> >
> > return 0;
> > }
> > -DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(pxp_info);
> > +
> > +static int pxp_info_open(struct inode *inode, struct file *file)
> > +{
> > + return single_open(file, pxp_info_show, inode->i_private);
> > +}
> > +
> > +static const struct file_operations pxp_info_fops = {
> > + .owner = THIS_MODULE,
> > + .open = pxp_info_open,
> > + .read = seq_read,
> > + .llseek = seq_lseek,
> > + .release = single_release,
> > +};
> >
> > static int pxp_terminate_get(void *data, u64 *val)
> > {
> > @@ -59,23 +74,23 @@ static int pxp_terminate_set(void *data, u64
> > val)
> > }
> >
> > DEFINE_SIMPLE_ATTRIBUTE(pxp_terminate_fops, pxp_terminate_get,
> > pxp_terminate_set, "%llx\n");
> > -void intel_pxp_debugfs_register(struct intel_pxp *pxp, struct
> > dentry *gt_root)
> > +
> > +void intel_pxp_debugfs_register(struct intel_pxp *pxp)
> > {
> > - static const struct intel_gt_debugfs_file files[] = {
> > - { "info", &pxp_info_fops, NULL },
> > - { "terminate_state", &pxp_terminate_fops, NULL },
> > - };
> > - struct dentry *root;
> > + struct drm_minor *minor = pxp->i915->drm.primary;
> > + struct dentry *pxproot;
> >
> > - if (!gt_root)
> > + if (!HAS_PXP(pxp->i915))
> > return;
> >
> > - if (!HAS_PXP((pxp_to_gt(pxp)->i915)))
> > + pxproot = debugfs_create_dir("pxp", minor->debugfs_root);
> > + if (IS_ERR(pxproot))
> > return;
> >
> > - root = debugfs_create_dir("pxp", gt_root);
> > - if (IS_ERR(root))
> > - return;
> > + debugfs_create_file("info", 0444, pxproot,
> > + pxp, &pxp_info_fops);
> > +
> > + debugfs_create_file("terminate_state", 0644, pxproot,
> > + pxp, &pxp_terminate_fops);
> >
> > - intel_gt_debugfs_register_files(root, files,
> > ARRAY_SIZE(files), pxp);
> > }
> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.h
> > b/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.h
> > index 7e0c3d2f5d7e..299382b59e66 100644
> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.h
> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.h
> > @@ -10,10 +10,10 @@ struct intel_pxp;
> > struct dentry;
> >
> > #ifdef CONFIG_DRM_I915_PXP
> > -void intel_pxp_debugfs_register(struct intel_pxp *pxp, struct
> > dentry *root);
> > +void intel_pxp_debugfs_register(struct intel_pxp *pxp);
> > #else
> > static inline void
> > -intel_pxp_debugfs_register(struct intel_pxp *pxp, struct dentry
> > *root)
> > +intel_pxp_debugfs_register(struct intel_pxp *pxp)
> > {
> > }
> > #endif
> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_irq.c
> > b/drivers/gpu/drm/i915/pxp/intel_pxp_irq.c
> > index c28be430718a..fd30befbf784 100644
> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_irq.c
> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_irq.c
> > @@ -3,14 +3,18 @@
> > * Copyright(c) 2020 Intel Corporation.
> > */
> > #include <linux/workqueue.h>
> > -#include "intel_pxp.h"
> > -#include "intel_pxp_irq.h"
> > -#include "intel_pxp_session.h"
> > +
> > #include "gt/intel_gt_irq.h"
> > #include "gt/intel_gt_regs.h"
> > #include "gt/intel_gt_types.h"
> > +
> > #include "i915_irq.h"
> > #include "i915_reg.h"
> > +
> > +#include "intel_pxp.h"
> > +#include "intel_pxp_irq.h"
> > +#include "intel_pxp_session.h"
> > +#include "intel_pxp_types.h"
> > #include "intel_runtime_pm.h"
> >
> > /**
> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
> > b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
> > index 6a7d4e2ee138..37371f44a550 100644
> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
> > @@ -3,11 +3,13 @@
> > * Copyright(c) 2020 Intel Corporation.
> > */
> >
> > +#include "i915_drv.h"
> > +
> > #include "intel_pxp.h"
> > #include "intel_pxp_irq.h"
> > #include "intel_pxp_pm.h"
> > #include "intel_pxp_session.h"
> > -#include "i915_drv.h"
> > +#include "intel_pxp_types.h"
> >
> > void intel_pxp_suspend_prepare(struct intel_pxp *pxp)
> > {
> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c
> > b/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c
> > index b0c9170b1395..16782d119bfd 100644
> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c
> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_tee.c
> > @@ -11,17 +11,19 @@
> > #include "gem/i915_gem_lmem.h"
> >
> > #include "i915_drv.h"
> > +
> > #include "intel_pxp.h"
> > -#include "intel_pxp_session.h"
> > -#include "intel_pxp_tee.h"
> > #include "intel_pxp_cmd_interface_42.h"
> > #include "intel_pxp_huc.h"
> > +#include "intel_pxp_session.h"
> > +#include "intel_pxp_tee.h"
> > +#include "intel_pxp_types.h"
> >
> > static inline struct intel_pxp *i915_dev_to_pxp(struct device
> > *i915_kdev)
> > {
> > struct drm_i915_private *i915 = kdev_to_i915(i915_kdev);
> >
> > - return &to_gt(i915)->pxp;
> > + return i915->pxp;
> > }
> >
> > static int intel_pxp_tee_io_message(struct intel_pxp *pxp,
> > diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_types.h
> > b/drivers/gpu/drm/i915/pxp/intel_pxp_types.h
> > index f74b1e11a505..d550cdba3399 100644
> > --- a/drivers/gpu/drm/i915/pxp/intel_pxp_types.h
> > +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_types.h
> > @@ -12,12 +12,23 @@
> > #include <linux/workqueue.h>
> >
> > struct intel_context;
> > +struct intel_gt;
> > struct i915_pxp_component;
> > +struct drm_i915_private;
> >
> > /**
> > * struct intel_pxp - pxp state
> > */
> > struct intel_pxp {
> > + /** @i915: back poiner to i915*/
> > + struct drm_i915_private *i915;
> > +
> > + /**
> > + * @ctrl_gt: poiner to the tile that owns the controls for
> > PXP subsystem assets that
> > + * the VDBOX, the KCR engine (and GSC CS depending on the
> > platform)
> > + */
> > + struct intel_gt *ctrl_gt;
> > +
> > /**
> > * @pxp_component: i915_pxp_component struct of the bound
> > mei_pxp
> > * module. Only set and cleared inside component
> > bind/unbind functions,
> >
> > base-commit: d21d6474a37e5d43075a24668807ea40a7ee9fc1
> > --
> > 2.34.1
> >
>
