101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2023 Intel Corporation
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*/
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#ifndef _ABI_GSC_PXP_COMMANDS_ABI_H
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#define _ABI_GSC_PXP_COMMANDS_ABI_H
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#include <linux/sizes.h>
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#include <linux/types.h>
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/* Heci client ID for PXP commands */
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#define HECI_MEADDRESS_PXP 17
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#define PXP_APIVER(x, y) (((x) & 0xFFFF) << 16 | ((y) & 0xFFFF))
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/*
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* A PXP sub-section in an HECI packet can be up to 64K big in each direction.
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* This does not include the top-level GSC header.
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*/
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#define PXP_MAX_PACKET_SIZE SZ_64K
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/*
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* there are a lot of status codes for PXP, but we only define the cross-API
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* common ones that we actually can handle in the kernel driver. Other failure
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* codes should be printed to error msg for debug.
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*/
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enum pxp_status {
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PXP_STATUS_SUCCESS = 0x0,
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PXP_STATUS_ERROR_API_VERSION = 0x1002,
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PXP_STATUS_NOT_READY = 0x100e,
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PXP_STATUS_PLATFCONFIG_KF1_NOVERIF = 0x101a,
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PXP_STATUS_PLATFCONFIG_KF1_BAD = 0x101f,
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PXP_STATUS_PLATFCONFIG_FIXED_KF1_NOT_SUPPORTED = 0x1037,
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PXP_STATUS_OP_NOT_PERMITTED = 0x4013
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};
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/* Common PXP FW message header */
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struct pxp_cmd_header {
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u32 api_version;
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u32 command_id;
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union {
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u32 status; /* out */
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u32 stream_id; /* in */
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#define PXP_CMDHDR_EXTDATA_SESSION_VALID GENMASK(0, 0)
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#define PXP_CMDHDR_EXTDATA_APP_TYPE GENMASK(1, 1)
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#define PXP_CMDHDR_EXTDATA_SESSION_ID GENMASK(17, 2)
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};
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/* Length of the message (excluding the header) */
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u32 buffer_len;
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} __packed;
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#define PXP43_CMDID_INVALIDATE_STREAM_KEY 0x00000007
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#define PXP43_CMDID_INIT_SESSION 0x00000036
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#define PXP43_CMDID_NEW_HUC_AUTH 0x0000003F /* MTL+ */
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/* PXP-Input-Packet: HUC Auth-only */
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struct pxp43_new_huc_auth_in {
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struct pxp_cmd_header header;
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u64 huc_base_address;
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u32 huc_size;
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} __packed;
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/* PXP-Output-Packet: HUC Load and Authentication or Auth-only */
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struct pxp43_huc_auth_out {
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struct pxp_cmd_header header;
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} __packed;
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/* PXP-Input-Packet: Init PXP session */
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struct pxp43_create_arb_in {
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struct pxp_cmd_header header;
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/* header.stream_id fields for vesion 4.3 of Init PXP session: */
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#define PXP43_INIT_SESSION_VALID BIT(0)
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#define PXP43_INIT_SESSION_APPTYPE BIT(1)
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#define PXP43_INIT_SESSION_APPID GENMASK(17, 2)
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u32 protection_mode;
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#define PXP43_INIT_SESSION_PROTECTION_ARB 0x2
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u32 sub_session_id;
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u32 init_flags;
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u32 rsvd[12];
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} __packed;
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/* PXP-Input-Packet: Init PXP session */
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struct pxp43_create_arb_out {
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struct pxp_cmd_header header;
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u32 rsvd[8];
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} __packed;
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/* PXP-Input-Packet: Invalidate Stream Key */
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struct pxp43_inv_stream_key_in {
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struct pxp_cmd_header header;
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u32 rsvd[3];
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} __packed;
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/* PXP-Output-Packet: Invalidate Stream Key */
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struct pxp43_inv_stream_key_out {
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struct pxp_cmd_header header;
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u32 rsvd;
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} __packed;
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#endif
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