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Some platforms with a PSP support an interface for features that interact directly with the PSP instead of through a SEV or TEE environment. Initialize this interface so that other drivers can consume it. These drivers may either be subdrivers for the ccp module or external modules. For external modules, export a symbol for them to utilize. Acked-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* AMD Platform Security Processor (PSP) interface driver
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*
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* Copyright (C) 2017-2019 Advanced Micro Devices, Inc.
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*
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* Author: Brijesh Singh <brijesh.singh@amd.com>
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*/
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#ifndef __PSP_DEV_H__
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#define __PSP_DEV_H__
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/bits.h>
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#include <linux/interrupt.h>
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#include "sp-dev.h"
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#define MAX_PSP_NAME_LEN 16
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extern struct psp_device *psp_master;
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typedef void (*psp_irq_handler_t)(int, void *, unsigned int);
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struct psp_device {
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struct list_head entry;
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struct psp_vdata *vdata;
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char name[MAX_PSP_NAME_LEN];
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struct device *dev;
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struct sp_device *sp;
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void __iomem *io_regs;
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psp_irq_handler_t sev_irq_handler;
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void *sev_irq_data;
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void *sev_data;
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void *tee_data;
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void *platform_access_data;
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unsigned int capability;
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};
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void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
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void *data);
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void psp_clear_sev_irq_handler(struct psp_device *psp);
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struct psp_device *psp_get_master_device(void);
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#define PSP_CAPABILITY_SEV BIT(0)
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#define PSP_CAPABILITY_TEE BIT(1)
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#define PSP_CAPABILITY_PSP_SECURITY_REPORTING BIT(7)
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#define PSP_CAPABILITY_PSP_SECURITY_OFFSET 8
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/*
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* The PSP doesn't directly store these bits in the capability register
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* but instead copies them from the results of query command.
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*
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* The offsets from the query command are below, and shifted when used.
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*/
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#define PSP_SECURITY_FUSED_PART BIT(0)
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#define PSP_SECURITY_DEBUG_LOCK_ON BIT(2)
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#define PSP_SECURITY_TSME_STATUS BIT(5)
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#define PSP_SECURITY_ANTI_ROLLBACK_STATUS BIT(7)
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#define PSP_SECURITY_RPMC_PRODUCTION_ENABLED BIT(8)
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#define PSP_SECURITY_RPMC_SPIROM_AVAILABLE BIT(9)
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#define PSP_SECURITY_HSP_TPM_AVAILABLE BIT(10)
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#define PSP_SECURITY_ROM_ARMOR_ENFORCED BIT(11)
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#endif /* __PSP_DEV_H */
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