drivers/misc/mediatek/cmdq/mailbox/cmdq-sec.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2019 MediaTek Inc.
 */

#ifndef __CMDQ_SEC_H__
#define __CMDQ_SEC_H__

#include <linux/kernel.h>
#include <linux/soc/mediatek/mtk-cmdq-ext.h>

#include "cmdq-sec-iwc-common.h"

typedef s32 (*sec_insert_backup_cookie)(struct cmdq_pkt *pkt);
typedef int (*sec_pkt_wait_complete)(struct cmdq_pkt *pkt);
typedef void (*sec_pkt_free_data)(struct cmdq_pkt *pkt);
typedef void (*sec_err_dump)(struct cmdq_pkt *pkt,
	struct cmdq_client *client, u64 **inst, const char **dispatch);
struct cmdq_sec_helper_fp {
	sec_insert_backup_cookie sec_insert_backup_cookie_fp;
	sec_pkt_wait_complete sec_pkt_wait_complete_fp;
	sec_pkt_free_data sec_pkt_free_data_fp;
	sec_err_dump sec_err_dump_fp;
};
void cmdq_sec_helper_set_fp(struct cmdq_sec_helper_fp *cust_cmdq_sec);

enum CMDQ_SEC_SCENARIO {
	CMDQ_SEC_PRIMARY_DISP = 1,
	CMDQ_SEC_SUB_DISP = 4,

	/* client from user space, so the cmd buffer is in user space. */
	CMDQ_SEC_USER_MDP = 12,

	CMDQ_SEC_DEBUG = 13,

	CMDQ_SEC_DISP_PRIMARY_DISABLE_SECURE_PATH = 18,
	CMDQ_SEC_DISP_SUB_DISABLE_SECURE_PATH = 19,

	CMDQ_SEC_KERNEL_CONFIG_GENERAL = 38,

	/* debug scenario use mdp flush */
	CMDQ_SEC_DEBUG_MDP = 42,

	/* for ISP kernel driver */
	CMDQ_SEC_ISP_RSC = 43,
	CMDQ_SEC_ISP_FDVT = 44,
	CMDQ_SEC_ISP_DPE = 45,

	CMDQ_MAX_SEC_COUNT	/* ALWAYS keep at the end */
};

struct cmdq_sec_addr_meta {
	/* [IN]_d, index of instruction.
	 * Update its arg_b value to real PA/MVA in secure world
	 */
	uint32_t instrIndex;

	/*
	 * Note: Buffer and offset
	 *
	 *   -------------
	 *   |     |     |
	 *   -------------
	 *   ^     ^  ^  ^
	 *   A     B  C  D
	 *
	 * A: baseHandle
	 * B: baseHandle + blockOffset
	 * C: baseHandle + blockOffset + offset
	 * A~B or B~D: size
	 */

	uint32_t type;		/* [IN] addr handle type */
	uint64_t baseHandle;	/* [IN]_h, secure address handle */
	/* [IN]_b, block offset from handle(PA) to current block(plane) */
	uint32_t blockOffset;
	uint32_t offset;	/* [IN]_b, buffser offset to secure handle */
	uint32_t size;		/* buffer size */
	uint32_t port;		/* hw port id (i.e. M4U port id) */
	uint32_t sec_id;
	uint32_t useSecIdinMeta;
	int32_t ionFd;
};

struct cmdq_sec_data {
	/* address metadata, used to translate secure buffer PA
	 * related instruction in secure world
	 */
	uint32_t addrMetadataCount;	/* [IN] count of element in addrList */
	/* [IN] array of cmdq_sec_addr_meta */
	uint64_t addrMetadatas;
	uint32_t addrMetadataMaxCount;	/*[Reserved] */

	enum CMDQ_SEC_SCENARIO scenario;

	uint64_t enginesNeedDAPC;
	uint64_t enginesNeedPortSecurity;

	/* [Reserved] This is for CMDQ driver usage itself. Not for client.
	 * task index in thread's tasklist. -1 for not in tasklist.
	 */
	int32_t waitCookie;
	/* reset HW thread in SWd */
	bool resetExecCnt;

	enum cmdq_sec_meta_type client_meta_type;

	u32 client_meta_size[4];
	void *client_meta[4];

	/* response */
	s32 response;
	struct iwcCmdqSecStatus_t sec_status;

	/* SVP HDR */
	uint32_t mdp_extension;
	struct readback_engine readback_engs[CMDQ_MAX_READBACK_ENG];
	uint32_t readback_cnt;

	/* MTEE */
	bool mtee;

	/* iommu_sec_id */
	int32_t sec_id;
};

/* implementation in cmdq-sec-helper.c */
s32 cmdq_sec_pkt_set_data(struct cmdq_pkt *pkt, const u64 dapc_engine,
	const u64 port_sec_engine, const enum CMDQ_SEC_SCENARIO scenario,
	const enum cmdq_sec_meta_type meta_type);
void cmdq_sec_pkt_free_data(struct cmdq_pkt *pkt);
s32 cmdq_sec_pkt_set_payload(struct cmdq_pkt *pkt, u8 idx,
	const u32 meta_size, u32 *meta);
s32 cmdq_sec_pkt_write_reg(struct cmdq_pkt *pkt, u32 addr, u64 base,
	const enum CMDQ_IWC_ADDR_METADATA_TYPE type,
	const u32 offset, const u32 size, const u32 port);
s32 cmdq_sec_pkt_assign_metadata(struct cmdq_pkt *pkt,
	u32 count, void *meta_array);
void cmdq_sec_dump_secure_data(struct cmdq_pkt *pkt);
int cmdq_sec_pkt_wait_complete(struct cmdq_pkt *pkt);
void cmdq_sec_err_dump(struct cmdq_pkt *pkt, struct cmdq_client *client,
	u64 **inst, const char **dispatch);

/* MTEE */
void cmdq_sec_pkt_set_mtee(struct cmdq_pkt *pkt, const bool enable);

/* implementation in cmdq-sec-mailbox.c */
void cmdq_sec_mbox_switch_normal(struct cmdq_client *cl);
void cmdq_sec_mbox_stop(struct cmdq_client *cl);
void cmdq_sec_mbox_enable(void *chan);
void cmdq_sec_mbox_disable(void *chan);
#endif