threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/*
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* Copyright (C) 2015 MediaTek Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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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typedef int M4U_PORT_ID;
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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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#define M4U_PROT_CACHE \
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(1 << 2) /* buffer access will goto CCI to do cache snoop */
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#define M4U_PROT_SHARE \
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(1 << 3) /* 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_SEC \
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(1 << 4) /* buffer can only be accessed by secure engine. */
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/* public flags */
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#define M4U_FLAGS_SEQ_ACCESS \
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(1 << 0) /* engine access this buffer in sequncial way. */
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#define M4U_FLAGS_FIX_MVA \
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(1 << 1) /* fix allocation, we will use mva user specified. */
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#define M4U_FLAGS_SEC_SHAREABLE (1 << 2) /* the mva will share in SWd */
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#define M4U_FLAGS_START_FROM \
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(1 << 3) /* the allocator will search free mva from user specified. */
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#define M4U_FLAGS_SG_READY \
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( \
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1 << 4) /* ion_alloc have allocated sg_table with \
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* m4u_create_sgtable. For va2mva ion case
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*/
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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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M4U_PORT_ID ePortID; /* hardware 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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enum M4U_CACHE_SYNC_ENUM {
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M4U_CACHE_CLEAN_BY_RANGE,
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M4U_CACHE_INVALID_BY_RANGE,
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M4U_CACHE_FLUSH_BY_RANGE,
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M4U_CACHE_CLEAN_ALL,
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M4U_CACHE_INVALID_ALL,
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M4U_CACHE_FLUSH_ALL,
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};
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enum M4U_DMA_TYPE {
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M4U_DMA_MAP_AREA,
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M4U_DMA_UNMAP_AREA,
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M4U_DMA_FLUSH_BY_RANGE,
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};
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enum M4U_DMA_DIR {
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M4U_DMA_FROM_DEVICE,
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M4U_DMA_TO_DEVICE,
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M4U_DMA_BIDIRECTIONAL,
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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 eModuleID, 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, unsigned int size, unsigned long va);
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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)(
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int port, unsigned int mva, void *data);
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int m4u_register_fault_callback(int port, m4u_fault_callback_t *fn, void *data);
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int m4u_unregister_fault_callback(int port);
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int m4u_enable_tf(unsigned int port, bool fgenable);
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#endif
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