mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
15f7a4c652
Introduce clear_psp_master_device() to ensure that sp_dev_master gets
properly cleared on the release of a psp device.
Fixes: 2a6170dfe7 ("crypto: ccp: Add Platform Security Processor (PSP) device support")
Signed-off-by: John Allen <john.allen@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
175 lines
4.1 KiB
C
175 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* AMD Secure Processor driver
|
|
*
|
|
* Copyright (C) 2017-2019 Advanced Micro Devices, Inc.
|
|
*
|
|
* Author: Tom Lendacky <thomas.lendacky@amd.com>
|
|
* Author: Gary R Hook <gary.hook@amd.com>
|
|
* Author: Brijesh Singh <brijesh.singh@amd.com>
|
|
*/
|
|
|
|
#ifndef __SP_DEV_H__
|
|
#define __SP_DEV_H__
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/list.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/dmapool.h>
|
|
#include <linux/hw_random.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irqreturn.h>
|
|
|
|
#define SP_MAX_NAME_LEN 32
|
|
|
|
#define CACHE_NONE 0x00
|
|
#define CACHE_WB_NO_ALLOC 0xb7
|
|
|
|
/* Structure to hold CCP device data */
|
|
struct ccp_device;
|
|
struct ccp_vdata {
|
|
const unsigned int version;
|
|
const unsigned int dma_chan_attr;
|
|
void (*setup)(struct ccp_device *);
|
|
const struct ccp_actions *perform;
|
|
const unsigned int offset;
|
|
const unsigned int rsamax;
|
|
};
|
|
|
|
struct sev_vdata {
|
|
const unsigned int cmdresp_reg;
|
|
const unsigned int cmdbuff_addr_lo_reg;
|
|
const unsigned int cmdbuff_addr_hi_reg;
|
|
};
|
|
|
|
struct tee_vdata {
|
|
const unsigned int cmdresp_reg;
|
|
const unsigned int cmdbuff_addr_lo_reg;
|
|
const unsigned int cmdbuff_addr_hi_reg;
|
|
const unsigned int ring_wptr_reg;
|
|
const unsigned int ring_rptr_reg;
|
|
};
|
|
|
|
struct psp_vdata {
|
|
const struct sev_vdata *sev;
|
|
const struct tee_vdata *tee;
|
|
const unsigned int feature_reg;
|
|
const unsigned int inten_reg;
|
|
const unsigned int intsts_reg;
|
|
};
|
|
|
|
/* Structure to hold SP device data */
|
|
struct sp_dev_vdata {
|
|
const unsigned int bar;
|
|
|
|
const struct ccp_vdata *ccp_vdata;
|
|
const struct psp_vdata *psp_vdata;
|
|
};
|
|
|
|
struct sp_device {
|
|
struct list_head entry;
|
|
|
|
struct device *dev;
|
|
|
|
struct sp_dev_vdata *dev_vdata;
|
|
unsigned int ord;
|
|
char name[SP_MAX_NAME_LEN];
|
|
|
|
/* Bus specific device information */
|
|
void *dev_specific;
|
|
|
|
/* I/O area used for device communication. */
|
|
void __iomem *io_map;
|
|
|
|
/* DMA caching attribute support */
|
|
unsigned int axcache;
|
|
|
|
/* get and set master device */
|
|
struct sp_device*(*get_psp_master_device)(void);
|
|
void (*set_psp_master_device)(struct sp_device *);
|
|
void (*clear_psp_master_device)(struct sp_device *);
|
|
|
|
bool irq_registered;
|
|
bool use_tasklet;
|
|
|
|
unsigned int ccp_irq;
|
|
irq_handler_t ccp_irq_handler;
|
|
void *ccp_irq_data;
|
|
|
|
unsigned int psp_irq;
|
|
irq_handler_t psp_irq_handler;
|
|
void *psp_irq_data;
|
|
|
|
void *ccp_data;
|
|
void *psp_data;
|
|
};
|
|
|
|
int sp_pci_init(void);
|
|
void sp_pci_exit(void);
|
|
|
|
int sp_platform_init(void);
|
|
void sp_platform_exit(void);
|
|
|
|
struct sp_device *sp_alloc_struct(struct device *dev);
|
|
|
|
int sp_init(struct sp_device *sp);
|
|
void sp_destroy(struct sp_device *sp);
|
|
struct sp_device *sp_get_master(void);
|
|
|
|
int sp_suspend(struct sp_device *sp, pm_message_t state);
|
|
int sp_resume(struct sp_device *sp);
|
|
int sp_request_ccp_irq(struct sp_device *sp, irq_handler_t handler,
|
|
const char *name, void *data);
|
|
void sp_free_ccp_irq(struct sp_device *sp, void *data);
|
|
int sp_request_psp_irq(struct sp_device *sp, irq_handler_t handler,
|
|
const char *name, void *data);
|
|
void sp_free_psp_irq(struct sp_device *sp, void *data);
|
|
struct sp_device *sp_get_psp_master_device(void);
|
|
|
|
#ifdef CONFIG_CRYPTO_DEV_SP_CCP
|
|
|
|
int ccp_dev_init(struct sp_device *sp);
|
|
void ccp_dev_destroy(struct sp_device *sp);
|
|
|
|
int ccp_dev_suspend(struct sp_device *sp, pm_message_t state);
|
|
int ccp_dev_resume(struct sp_device *sp);
|
|
|
|
#else /* !CONFIG_CRYPTO_DEV_SP_CCP */
|
|
|
|
static inline int ccp_dev_init(struct sp_device *sp)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void ccp_dev_destroy(struct sp_device *sp) { }
|
|
|
|
static inline int ccp_dev_suspend(struct sp_device *sp, pm_message_t state)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline int ccp_dev_resume(struct sp_device *sp)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_CRYPTO_DEV_SP_CCP */
|
|
|
|
#ifdef CONFIG_CRYPTO_DEV_SP_PSP
|
|
|
|
int psp_dev_init(struct sp_device *sp);
|
|
void psp_pci_init(void);
|
|
void psp_dev_destroy(struct sp_device *sp);
|
|
void psp_pci_exit(void);
|
|
|
|
#else /* !CONFIG_CRYPTO_DEV_SP_PSP */
|
|
|
|
static inline int psp_dev_init(struct sp_device *sp) { return 0; }
|
|
static inline void psp_pci_init(void) { }
|
|
static inline void psp_dev_destroy(struct sp_device *sp) { }
|
|
static inline void psp_pci_exit(void) { }
|
|
|
|
#endif /* CONFIG_CRYPTO_DEV_SP_PSP */
|
|
|
|
#endif
|