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From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
To: "Huang, Sean Z" <sean.z.huang@intel.com>,
	Intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 20/27] drm/i915/pxp: Create the arbitrary session after boot
Date: Mon, 16 Nov 2020 12:54:58 +0200	[thread overview]
Message-ID: <160552409799.10586.75664961642876662@jlahtine-mobl.ger.corp.intel.com> (raw)
In-Reply-To: <20201115210815.5272-20-sean.z.huang@intel.com>

Quoting Huang, Sean Z (2020-11-15 23:08:08)
> Create the arbitrary session, with the fixed session id 0xf, after
> system boot, for the case that application allocates the protected
> buffer without establishing any protection session. Because the
> hardware requires at least one alive session for protected buffer
> creation.  This arbitrary session needs to be re-created after
> teardown or power event because hardware encryption key won't be
> valid after such cases.
> 
> Signed-off-by: Huang, Sean Z <sean.z.huang@intel.com>

<SNIP>

> +++ b/drivers/gpu/drm/i915/pxp/intel_pxp_tee.h
> @@ -16,4 +16,10 @@ int pxp_tee_ioctl_io_message(struct drm_i915_private *i915,
>                              void __user *msg_out_user_ptr, u32 *msg_out_size_ptr,
>                              u32 msg_out_buf_size);
>  
> +int intel_pxp_tee_cmd_create_arb_session(struct drm_i915_private *i915);
> +
> +/* TEE command to create the arbitrary session */
> +#define PXP_TEE_ARB_CMD_BIN  {0x00040000, 0x0000001e, 0x00000000, 0x00000008, 0x00000002, 0x0000000f}
> +#define PXP_TEE_ARB_CMD_DW_LEN (6)

This is a BLOB so it doesn't belong to kernel source code. It could be
considered in linux-firmware. As it's only an init sequence I'm not sure
how that will be perceived.

Probably best to ask.

Regards, Joonas
_______________________________________________
Intel-gfx mailing list
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  reply	other threads:[~2020-11-16 10:55 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-15 21:07 [Intel-gfx] [PATCH 01/27] drm/i915/pxp: Introduce Intel PXP component Huang, Sean Z
2020-11-15 21:07 ` [Intel-gfx] [PATCH 02/27] drm/i915/pxp: Enable PXP irq worker and callback stub Huang, Sean Z
2020-11-15 21:07 ` [Intel-gfx] [PATCH 03/27] drm/i915/pxp: Add PXP context for logical hardware states Huang, Sean Z
2020-11-15 21:07 ` [Intel-gfx] [PATCH 04/27] drm/i915/pxp: set KCR reg init during the boot time Huang, Sean Z
2020-11-15 21:07 ` [Intel-gfx] [PATCH 05/27] drm/i915/pxp: Enable ioctl action to set the ring3 context Huang, Sean Z
2020-11-16 10:22   ` Joonas Lahtinen
2020-11-16 10:53     ` Chris Wilson
2020-11-15 21:07 ` [Intel-gfx] [PATCH 06/27] drm/i915: Rename the whitelist to allowlist Huang, Sean Z
2020-11-16 10:26   ` Joonas Lahtinen
2020-11-16 11:33     ` Chris Wilson
2020-11-15 21:07 ` [Intel-gfx] [PATCH 07/27] drm/i915/pxp: Add PXP-related registers into allowlist Huang, Sean Z
2020-11-16 10:33   ` Joonas Lahtinen
2020-11-16 11:10     ` Chris Wilson
2020-11-15 21:07 ` [Intel-gfx] [PATCH 08/27] drm/i915/pxp: Read register to check hardware session state Huang, Sean Z
2020-11-15 21:07 ` [Intel-gfx] [PATCH 09/27] drm/i915/pxp: Implement funcs to get/set PXP tag Huang, Sean Z
2020-11-15 21:07 ` [Intel-gfx] [PATCH 10/27] drm/i915/pxp: Enable ioctl action to reserve session slot Huang, Sean Z
2020-11-16 11:01   ` Joonas Lahtinen
2020-11-15 21:07 ` [Intel-gfx] [PATCH 11/27] drm/i915/pxp: Enable ioctl action to set session in play Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 12/27] drm/i915/pxp: Func to send hardware session termination Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 13/27] drm/i915/pxp: Enable ioctl action to terminate the session Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 14/27] drm/i915/pxp: Enable ioctl action to query PXP tag Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 15/27] drm/i915/pxp: Destroy all type0 sessions upon teardown Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 16/27] drm/i915/pxp: Termiante the session upon app crash Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 17/27] drm/i915/pxp: Enable PXP power management Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 18/27] drm/i915/pxp: Implement funcs to create the TEE channel Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 19/27] drm/i915/pxp: Enable ioctl action to send TEE commands Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 20/27] drm/i915/pxp: Create the arbitrary session after boot Huang, Sean Z
2020-11-16 10:54   ` Joonas Lahtinen [this message]
2020-11-15 21:08 ` [Intel-gfx] [PATCH 21/27] drm/i915/pxp: Add i915 trace logs for PXP operations Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 22/27] drm/i915/pxp: Expose session state for display protection flip Huang, Sean Z
2020-11-16 10:49   ` Joonas Lahtinen
2020-11-16 23:37     ` Huang, Sean Z
2020-11-17  8:39   ` Anshuman Gupta
2020-11-17 19:09     ` Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 23/27] mei: bus: enable pavp device Huang, Sean Z
2020-11-16 10:46   ` Joonas Lahtinen
2020-11-16 10:49     ` Winkler, Tomas
2020-11-16 11:08       ` Joonas Lahtinen
2020-11-15 21:08 ` [Intel-gfx] [PATCH 24/27] mei: pxp: export pavp client to me client bus Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 25/27] drm/i915/uapi: introduce drm_i915_gem_create_ext for TGL Huang, Sean Z
2020-11-16 10:38   ` Joonas Lahtinen
2020-11-16 10:39     ` Joonas Lahtinen
2020-11-17  8:42   ` Lionel Landwerlin
2020-11-15 21:08 ` [Intel-gfx] [PATCH 26/27] drm/i915/pavp: User interface for Protected buffer Huang, Sean Z
2020-11-15 21:08 ` [Intel-gfx] [PATCH 27/27] drm/i915/pxp: Add plane decryption support Huang, Sean Z
2020-11-15 21:30 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [01/27] drm/i915/pxp: Introduce Intel PXP component Patchwork
2020-11-15 22:00 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2020-11-16 10:09 ` [Intel-gfx] [PATCH 01/27] " Joonas Lahtinen
  -- strict thread matches above, loose matches on Subject: below --
2020-11-15 20:23 Huang, Sean Z
2020-11-15 20:23 ` [Intel-gfx] [PATCH 20/27] drm/i915/pxp: Create the arbitrary session after boot Huang, Sean Z
2020-11-14  1:45 [Intel-gfx] [PATCH 01/27] drm/i915/pxp: Introduce Intel PXP component Sean Z Huang
2020-11-14  1:45 ` [Intel-gfx] [PATCH 20/27] drm/i915/pxp: Create the arbitrary session after boot Sean Z Huang

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