intel-gfx.lists.freedesktop.org archive mirror
 help / color / mirror / Atom feed
From: "Huang, Sean Z" <sean.z.huang@intel.com>
To: Intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [RFC-v3 13/26] drm/i915/pxp: Enable ioctl action to query PXP tag
Date: Tue,  1 Dec 2020 15:57:34 -0800	[thread overview]
Message-ID: <20201201235747.26017-14-sean.z.huang@intel.com> (raw)
In-Reply-To: <20201201235747.26017-1-sean.z.huang@intel.com>

Enable the PXP ioctl action to allow user space driver to query the
PXP tag, which is a 32-bit bitwise value indicating the current
session info, including protection type, session id, and whether
the session is enabled.

Signed-off-by: Huang, Sean Z <sean.z.huang@intel.com>
---
 drivers/gpu/drm/i915/pxp/intel_pxp.c    |  7 +++++++
 drivers/gpu/drm/i915/pxp/intel_pxp.h    |  7 +++++++
 drivers/gpu/drm/i915/pxp/intel_pxp_sm.c | 20 ++++++++++++++++++++
 drivers/gpu/drm/i915/pxp/intel_pxp_sm.h |  3 +++
 4 files changed, 37 insertions(+)

diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c
index 3856e1060d11..969f3fdf0804 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp.c
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c
@@ -70,6 +70,13 @@ int i915_pxp_ops_ioctl(struct drm_device *dev, void *data, struct drm_file *drmf
 		}
 		break;
 	}
+	case PXP_ACTION_QUERY_PXP_TAG:
+	{
+		struct pxp_sm_query_pxp_tag *params = &pxp_info.query_pxp_tag;
+
+		ret = pxp_sm_ioctl_query_pxp_tag(i915, &params->session_is_alive, &params->pxp_tag);
+		break;
+	}
 	case PXP_ACTION_SET_USER_CONTEXT:
 	{
 		ret = intel_pxp_set_user_ctx(i915, pxp_info.set_user_ctx);
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.h b/drivers/gpu/drm/i915/pxp/intel_pxp.h
index ed77630bb7c4..9ba17c620ea2 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp.h
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp.h
@@ -31,6 +31,7 @@ enum pxp_sm_session_req {
 };
 
 enum pxp_ioctl_action {
+	PXP_ACTION_QUERY_PXP_TAG = 0,
 	PXP_ACTION_SET_SESSION_STATUS = 1,
 	PXP_ACTION_SET_USER_CONTEXT = 5,
 };
@@ -42,6 +43,11 @@ enum pxp_sm_status {
 	PXP_SM_STATUS_ERROR_UNKNOWN
 };
 
+struct pxp_sm_query_pxp_tag {
+	u32 session_is_alive;
+	u32 pxp_tag; /* in  - Session ID, out pxp tag */
+};
+
 struct pxp_sm_set_session_status_params {
 	/** @pxp_tag: in [optional], for Arbitrator session, out pxp tag */
 	u32 pxp_tag;
@@ -57,6 +63,7 @@ struct pxp_info {
 	u32 action;
 	u32 sm_status;
 	union {
+		struct pxp_sm_query_pxp_tag             query_pxp_tag;
 		struct pxp_sm_set_session_status_params set_session_status;
 		u32 set_user_ctx;
 	};
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c
index 65b89728251d..fdfb366d7472 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.c
@@ -970,6 +970,26 @@ int pxp_sm_terminate_protected_session_unsafe(struct drm_i915_private *i915, int
 	return ret;
 }
 
+int pxp_sm_ioctl_query_pxp_tag(struct drm_i915_private *i915, u32 *session_is_alive, u32 *pxp_tag)
+{
+	int session_type = 0;
+	int session_index = 0;
+	int ret;
+
+	if (!session_is_alive || !pxp_tag)
+		return -EINVAL;
+
+	ret = pxp_get_session_index(i915, *pxp_tag, &session_index, &session_type);
+	if (ret) {
+		drm_err(&i915->drm, "Failed to __pxpsessionid_to_sessionid\n");
+		return ret;
+	}
+
+	*pxp_tag = intel_pxp_get_pxp_tag(i915, session_index, session_type, session_is_alive);
+end:
+	return 0;
+}
+
 int pxp_sm_set_kcr_init_reg(struct drm_i915_private *i915)
 {
 	int ret;
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.h b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.h
index a68e1d109437..7ae001ccb60f 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp_sm.h
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp_sm.h
@@ -109,7 +109,10 @@ int pxp_sm_terminate_protected_session_safe(struct drm_i915_private *i915, int c
 					    int session_type, int session_id);
 int pxp_sm_terminate_protected_session_unsafe(struct drm_i915_private *i915, int session_type,
 					      int session_id);
+int pxp_sm_ioctl_query_pxp_tag(struct drm_i915_private *i915, u32 *session_is_alive, u32 *pxp_tag);
 int pxp_sm_set_kcr_init_reg(struct drm_i915_private *i915);
+u32 intel_pxp_get_pxp_tag(struct drm_i915_private *i915, int session_idx,
+			  int session_type, u32 *session_is_alive);
 bool intel_pxp_sm_is_any_type0_session_in_play(struct drm_i915_private *i915, int protection_mode);
 
 #endif /* __INTEL_PXP_SM_H__ */
-- 
2.17.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

  parent reply	other threads:[~2020-12-01 23:58 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-01 23:57 [Intel-gfx] [RFC-v3 00/26] Introduce Intel PXP component Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 01/26] drm/i915/pxp: " Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 02/26] drm/i915/pxp: Enable PXP irq worker and callback stub Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 03/26] drm/i915/pxp: Add PXP context for logical hardware states Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 04/26] drm/i915/pxp: set KCR reg init during the boot time Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 05/26] drm/i915/pxp: Implement ioctl action to set the user space context Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 06/26] drm/i915/pxp: Add PXP-related registers into allowlist Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 07/26] drm/i915/pxp: Read register to check hardware session state Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 08/26] drm/i915/pxp: Implement funcs to get/set PXP tag Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 09/26] drm/i915/pxp: Implement ioctl action to reserve session slot Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 10/26] drm/i915/pxp: Implement ioctl action to set session in play Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 11/26] drm/i915/pxp: Func to send hardware session termination Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 12/26] drm/i915/pxp: Implement ioctl action to terminate the session Huang, Sean Z
2020-12-01 23:57 ` Huang, Sean Z [this message]
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 14/26] drm/i915/pxp: Destroy all type0 sessions upon teardown Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 15/26] drm/i915/pxp: Termiante the session upon app crash Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 16/26] drm/i915/pxp: Enable PXP power management Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 17/26] drm/i915/pxp: Implement funcs to create the TEE channel Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 18/26] drm/i915/pxp: Implement ioctl action to send TEE commands Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 19/26] drm/i915/pxp: Create the arbitrary session after boot Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 20/26] drm/i915/pxp: Add i915 trace logs for PXP operations Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 21/26] drm/i915/pxp: Expose session state for display protection flip Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 22/26] mei: pxp: export pavp client to me client bus Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 23/26] drm/i915/uapi: introduce drm_i915_gem_create_ext Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 24/26] drm/i915/pxp: User interface for Protected buffer Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 25/26] drm/i915/pxp: Add plane decryption support Huang, Sean Z
2020-12-01 23:57 ` [Intel-gfx] [RFC-v3 26/26] drm/i915/pxp: Enable the PXP ioctl for protected session Huang, Sean Z
2020-12-02  0:18 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for Introduce Intel PXP component (rev3) Patchwork
2020-12-02  0:49 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-12-02  4:02 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
  -- strict thread matches above, loose matches on Subject: below --
2020-12-01 23:33 [Intel-gfx] [RFC-v3 00/26] Introduce Intel PXP component Huang, Sean Z
2020-12-01 23:33 ` [Intel-gfx] [RFC-v3 13/26] drm/i915/pxp: Enable ioctl action to query PXP tag Huang, Sean Z

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201201235747.26017-14-sean.z.huang@intel.com \
    --to=sean.z.huang@intel.com \
    --cc=Intel-gfx@lists.freedesktop.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).