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33960acccf
Adds a PCI device entry for Raven Ridge. Raven Ridge is an APU with a dedicated AMD Secure Processor having Trusted Execution Environment (TEE) support. The TEE provides a secure environment for running Trusted Applications (TAs) which implement security-sensitive parts of a feature. This patch configures AMD Secure Processor's TEE interface by initializing a ring buffer (shared memory between Rich OS and Trusted OS) which can hold multiple command buffer entries. The TEE interface is facilitated by a set of CPU to PSP mailbox registers. The next patch will address how commands are submitted to the ring buffer. Cc: Jens Wiklander <jens.wiklander@linaro.org> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Co-developed-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com> Signed-off-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com> Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com> Acked-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
61 lines
1.3 KiB
C
61 lines
1.3 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 PSP_CMDRESP_RESP BIT(31)
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#define PSP_CMDRESP_ERR_MASK 0xffff
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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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psp_irq_handler_t tee_irq_handler;
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void *tee_irq_data;
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void *sev_data;
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void *tee_data;
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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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void psp_set_tee_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
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void *data);
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void psp_clear_tee_irq_handler(struct psp_device *psp);
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struct psp_device *psp_get_master_device(void);
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#endif /* __PSP_DEV_H */
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