mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 20:01:55 +00:00
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 */
|
|
/*
|
|
* AMD Platform Security Processor (PSP) interface driver
|
|
*
|
|
* Copyright (C) 2017-2019 Advanced Micro Devices, Inc.
|
|
*
|
|
* Author: Brijesh Singh <brijesh.singh@amd.com>
|
|
*/
|
|
|
|
#ifndef __PSP_DEV_H__
|
|
#define __PSP_DEV_H__
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/list.h>
|
|
#include <linux/bits.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
#include "sp-dev.h"
|
|
|
|
#define PSP_CMDRESP_RESP BIT(31)
|
|
#define PSP_CMDRESP_ERR_MASK 0xffff
|
|
|
|
#define MAX_PSP_NAME_LEN 16
|
|
|
|
extern struct psp_device *psp_master;
|
|
|
|
typedef void (*psp_irq_handler_t)(int, void *, unsigned int);
|
|
|
|
struct psp_device {
|
|
struct list_head entry;
|
|
|
|
struct psp_vdata *vdata;
|
|
char name[MAX_PSP_NAME_LEN];
|
|
|
|
struct device *dev;
|
|
struct sp_device *sp;
|
|
|
|
void __iomem *io_regs;
|
|
|
|
psp_irq_handler_t sev_irq_handler;
|
|
void *sev_irq_data;
|
|
|
|
psp_irq_handler_t tee_irq_handler;
|
|
void *tee_irq_data;
|
|
|
|
void *sev_data;
|
|
void *tee_data;
|
|
};
|
|
|
|
void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
|
|
void *data);
|
|
void psp_clear_sev_irq_handler(struct psp_device *psp);
|
|
|
|
void psp_set_tee_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
|
|
void *data);
|
|
void psp_clear_tee_irq_handler(struct psp_device *psp);
|
|
|
|
struct psp_device *psp_get_master_device(void);
|
|
|
|
#endif /* __PSP_DEV_H */
|