103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2020 MediaTek Inc.
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*/
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#ifndef __M4U_V2_EXT_H__
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#define __M4U_V2_EXT_H__
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#define M4U_PROT_READ (1<<0) /* buffer can be read by engine */
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#define M4U_PROT_WRITE (1<<1) /* buffer can be write by engine */
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/* buffer access will goto CCI to do cache snoop */
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#define M4U_PROT_CACHE (1<<2)
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/* buffer access will goto CCI, but don't do cache snoop*/
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/*(just for engines who wants to use CCI bandwidth) */
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#define M4U_PROT_SHARE (1<<3)
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/* buffer can only be accessed by secure engine. */
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#define M4U_PROT_SEC (1<<4)
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/* public flags */
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/* engine access this buffer in sequncial way. */
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#define M4U_FLAGS_SEQ_ACCESS (1<<0)
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/* fix allocation, we will use mva user specified. */
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#define M4U_FLAGS_FIX_MVA (1<<1)
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#define M4U_FLAGS_SEC_SHAREABLE (1<<2) /* the mva will share in SWd */
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/* the allocator will search free mva from user specified. */
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#define M4U_FLAGS_START_FROM (1<<3)
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/* ion_alloc have allocated sg_table with m4u_create_sgtable.
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*For va2mva ion case
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*/
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#define M4U_FLAGS_SG_READY (1<<4)
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/* m4u internal flags (DO NOT use them for other purpers) */
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#define M4U_FLAGS_MVA_IN_FREE (1<<8) /* this mva is in deallocating. */
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enum M4U_RANGE_PRIORITY_ENUM {
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RT_RANGE_HIGH_PRIORITY = 0,
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SEQ_RANGE_LOW_PRIORITY = 1
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};
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/* port related: virtuality, security, distance */
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struct M4U_PORT_STRUCT {
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int ePortID; /* hw port ID, defined in M4U_PORT_ID */
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unsigned int Virtuality;
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unsigned int Security;
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unsigned int domain; /* domain : 0 1 2 3 */
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unsigned int Distance;
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unsigned int Direction; /* 0:- 1:+ */
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};
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struct m4u_client_t {
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/* mutex to protect mvaList */
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/* should get this mutex whenever add/delete/interate mvaList */
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struct mutex dataMutex;
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pid_t open_pid;
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pid_t open_tgid;
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struct list_head mvaList;
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};
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struct port_mva_info_t {
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int emoduleid;
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unsigned long va;
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unsigned int buf_size;
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int security;
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int cache_coherent;
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unsigned int flags;
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unsigned int iova_start;
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unsigned int iova_end;
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unsigned int mva;
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};
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struct sg_table *m4u_create_sgtable(unsigned long va, unsigned int size);
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int m4u_alloc_mva_sg(struct port_mva_info_t *port_info,
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struct sg_table *sg_table);
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int m4u_dealloc_mva_sg(int module_id,
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struct sg_table *sg_table,
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const unsigned int BufSize, const unsigned int MVA);
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int m4u_config_port_ext(struct M4U_PORT_STRUCT *pM4uPort);
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int m4u_mva_map_kernel(unsigned int mva, unsigned int size,
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unsigned long *map_va, unsigned int *map_size);
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int m4u_mva_unmap_kernel(unsigned int mva,
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unsigned int size, unsigned long va);
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void m4u_call_atf_debug(int m4u_debug_id);
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enum m4u_callback_ret_t {
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M4U_CALLBACK_HANDLED,
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M4U_CALLBACK_NOT_HANDLED,
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};
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typedef enum m4u_callback_ret_t(m4u_fault_callback_t) (int port,
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unsigned int mva, void *data);
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int m4u_register_fault_callback(int port, m4u_fault_callback_t *fn,
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void *data);
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int m4u_unregister_fault_callback(int port);
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int m4u_enable_tf(int port, bool fgenable);
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#endif
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