[Intel-gfx] [PATCH v7 1/1] drm/i915/pxp: Promote pxp subsystem to top-level of i915
Rodrigo Vivi
rodrigo.vivi at intel.com
Fri Dec 2 16:22:50 UTC 2022
On Thu, Dec 01, 2022 at 05:14:07PM -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
> 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.
Alan, overall you patch looks great. Thanks for the patience.
And thanks for the details above as well.
Please address the minor remaining things I could notice on this version
now and I believe we will be good to get this in after that.
Thanks,
Rodrigo.
>
> Changes from prior revs:
> v6: - Remove HAS_PXP macro and replace it with intel_pxp_is_supported
> because : [1] introduction of 'ctrl_gt' means we correct this
> for MTL's upcoming series now. [2] Also, this has little impact
> globally as its only used by PXP-internal callers at the moment.
> - Change intel_pxp_init/fini to take in i915 as its input to avoid
> ptr-to-ptr in init/fini calls.(Jani).
> - Remove the backpointer from pxp->i915 since we can use
> pxp->ctrl_gt->i915 if we need it. (Rodrigo).
> 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 at intel.com>
> ---
> .../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 | 7 +-
> drivers/gpu/drm/i915/pxp/intel_pxp.c | 74 +++++++++++++++----
> drivers/gpu/drm/i915/pxp/intel_pxp.h | 10 ++-
> drivers/gpu/drm/i915/pxp/intel_pxp_cmd.c | 8 +-
> drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.c | 44 +++++++----
> 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 | 8 ++
> 21 files changed, 153 insertions(+), 75 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 8b5077d630a7..930e68b43462 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"
> @@ -762,8 +761,6 @@ 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);
> @@ -803,8 +800,6 @@ 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 f519aa4a004a..0b6da2aa9718 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;
> @@ -275,8 +274,6 @@ 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 4e1bb3c23c63..d716d12c7fc9 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"
> @@ -759,6 +761,8 @@ 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);
> @@ -790,6 +794,8 @@ static void i915_driver_unregister(struct drm_i915_private *dev_priv)
>
> intel_display_driver_unregister(dev_priv);
>
> + intel_pxp_fini(dev_priv);
> +
> for_each_gt(gt, dev_priv, i)
> intel_gt_driver_unregister(gt);
>
> @@ -933,6 +939,8 @@ int i915_driver_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> if (ret)
> goto out_cleanup_modeset2;
>
> + intel_pxp_init(i915);
> +
> ret = intel_modeset_init(i915);
> if (ret)
> goto out_cleanup_gem;
> @@ -1168,6 +1176,8 @@ 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
> @@ -1248,6 +1258,8 @@ static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation)
>
> disable_rpm_wakeref_asserts(rpm);
>
> + intel_pxp_suspend(dev_priv->pxp);
is this really needed here in the suspend_late?
why not in suspend()?
In general what is needed in suspend_late is resumed from the resume_early,
what doesn't look the case here. So something looks off.
> +
> i915_gem_suspend_late(dev_priv);
>
> for_each_gt(gt, dev_priv, i)
> @@ -1360,6 +1372,8 @@ 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);
> @@ -1643,6 +1657,8 @@ 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);
>
> @@ -1747,6 +1763,8 @@ 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 a8a5bd426e78..7a4e9dc15b69 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 */
> @@ -919,10 +922,6 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
>
> #define HAS_GLOBAL_MOCS_REGISTERS(dev_priv) (INTEL_INFO(dev_priv)->has_global_mocs)
>
> -#define HAS_PXP(dev_priv) ((IS_ENABLED(CONFIG_DRM_I915_PXP) && \
> - INTEL_INFO(dev_priv)->has_pxp) && \
> - VDBOX_MASK(to_gt(dev_priv)))
> -
> #define HAS_GMCH(dev_priv) (INTEL_INFO(dev_priv)->display.has_gmch)
>
> #define HAS_GMD_ID(i915) (INTEL_INFO(i915)->has_gmd_id)
> diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c
> index 5efe61f67546..6faba92d4f89 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 +45,15 @@
> * 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_supported(const struct intel_pxp *pxp)
> +{
> + return (IS_ENABLED(CONFIG_DRM_I915_PXP) && pxp->ctrl_gt &&
> + INTEL_INFO(pxp->ctrl_gt->i915)->has_pxp && VDBOX_MASK(pxp->ctrl_gt));
> }
>
> bool intel_pxp_is_enabled(const struct intel_pxp *pxp)
> @@ -130,7 +142,7 @@ static void pxp_init_full(struct intel_pxp *pxp)
> if (ret)
> goto out_context;
>
> - drm_info(>->i915->drm, "Protected Xe Path (PXP) protected content support initialized\n");
> + drm_info(>->i915->drm, "Protected Xe Path v7B (PXP) protected content support initialized\n");
>
> return;
>
> @@ -138,31 +150,63 @@ 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 drm_i915_private *i915)
> +{
> + struct intel_pxp *newpxp;
> +
> + newpxp = kzalloc(sizeof(*newpxp), GFP_KERNEL);
> + if (!newpxp)
> + return -ENOMEM;
> +
> + i915->pxp = newpxp;
i915->pxp is already an intel_pxp *, why can't we simply
do
i915->pxp = kzalloc(sizeof(...
if (!i915->pxp)
return -ENOMEM;
?
> +
> + newpxp->ctrl_gt = pxp_get_ctrl_gt(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 (intel_pxp_is_supported(newpxp))
> + 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 drm_i915_private *i915)
> {
> + struct intel_pxp *pxp = i915->pxp;
> +
> pxp->arb_is_valid = false;
>
> intel_pxp_tee_component_fini(pxp);
>
> destroy_vcs_context(pxp);
> +
> + kfree(pxp);
> + i915->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..81f4c71c12cb 100644
> --- a/drivers/gpu/drm/i915/pxp/intel_pxp.h
> +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.h
> @@ -9,15 +9,17 @@
> #include <linux/errno.h>
> #include <linux/types.h>
>
> -struct intel_pxp;
> struct drm_i915_gem_object;
> +struct drm_i915_private;
> +struct intel_pxp;
>
> -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_supported(const 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 drm_i915_private *i915);
> +void intel_pxp_fini(struct drm_i915_private *i915);
>
> 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..a1ce43c999f5 100644
> --- a/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.c
> +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.c
> @@ -9,18 +9,20 @@
> #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)
> {
> struct intel_pxp *pxp = m->private;
> struct drm_printer p = drm_seq_file_printer(m);
> - bool enabled = intel_pxp_is_enabled(pxp);
>
> - if (!enabled) {
> + if (!intel_pxp_is_enabled(pxp)) {
> drm_printf(&p, "pxp disabled\n");
> return 0;
> }
> @@ -30,7 +32,19 @@ 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 +73,23 @@ 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;
> + struct dentry *pxproot;
>
> - if (!gt_root)
> + if (!intel_pxp_is_supported(pxp))
> return;
>
> - if (!HAS_PXP((pxp_to_gt(pxp)->i915)))
> + minor = pxp->ctrl_gt->i915->drm.primary;
> + 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);
>
> - intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), pxp);
> + debugfs_create_file("terminate_state", 0644, pxproot,
> + pxp, &pxp_terminate_fops);
> }
> 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;
hmmm... now that we have pxp under i915, we should simply kill this function
and move it to simply use 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..7dc5f08d1583 100644
> --- a/drivers/gpu/drm/i915/pxp/intel_pxp_types.h
> +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_types.h
> @@ -12,12 +12,20 @@
> #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 {
> + /**
> + * @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: 90c46246ec9594809ffa91c726e9306d67cafb6a
> --
> 2.34.1
>
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