104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
/*
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* Copyright (c) 2016-2021, NVIDIA CORPORATION, All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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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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*/
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#ifndef _LINUX_TEGRA_SAFETY_IVC_H_
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#define _LINUX_TEGRA_SAFETY_IVC_H_
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#include <linux/tegra-ivc.h>
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#include <linux/tegra-ivc-instance.h>
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#define SAFETY_CONF_IVC_L2SS_READY (SAFETY_CONF_IVC_READY << 24)
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#define SAFETY_CONF(id, value) ((SAFETY_CONF_ ## id << 24) | (value))
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#define SAFETY_CONF_GET_ID(value) (((value) >> 24) & 0x7f)
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#define SAFETY_CONF_GET_VALUE(value) ((value) & 0xffffff)
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#define TEGRA_SAFETY_SM_CMDRESP_CH 0
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#define TEGRA_SAFETY_IVC_READ_TIMEOUT (2 * HZ)
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enum {
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SAFETY_CONF_IVC_READY = 1,
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};
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#define MAX_SAFETY_CHANNELS 5
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struct safety_ast_region {
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u8 ast_id;
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u32 slave_base;
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size_t size;
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void *base;
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dma_addr_t dma;
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struct device dev;
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};
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struct tegra_safety_ivc {
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struct safety_ast_region region;
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struct tegra_hsp_sm_pair *ivc_pair;
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struct {
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wait_queue_head_t response_waitq;
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wait_queue_head_t empty_waitq;
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atomic_t response;
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atomic_t emptied;
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} cmd;
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struct tegra_safety_ivc_chan *ivc_chan[MAX_SAFETY_CHANNELS];
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atomic_t ivc_ready;
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struct work_struct work;
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struct workqueue_struct *wq;
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struct mutex rlock;
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struct mutex wlock;
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struct l1ss_data *ldata;
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};
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struct tegra_safety_ivc_chan {
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struct ivc ivc;
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char *name;
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struct tegra_safety_ivc *safety_ivc;
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};
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int tegra_safety_dev_init(struct device *dev, int index);
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void tegra_safety_dev_exit(struct device *dev, int index);
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void tegra_safety_dev_notify(void);
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struct tegra_safety_ivc_chan *tegra_safety_get_ivc_chan_from_str(
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struct tegra_safety_ivc *safety_ivc,
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char *ch_name);
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#define CMDRESP_PAYLOAD_SIZE 56U
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#define CMDRESP_PAYLOAD_EX_SIZE 248U
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#pragma pack(push, 1)
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typedef struct {
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uint8_t src;
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uint8_t dest;
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uint16_t cmd_opcode;
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uint8_t reserve;
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} cmdresp_header_t;
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typedef struct {
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uint16_t e2ecf1_crc; /*Profile 5 E2E Header*/
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uint8_t e2ecf2; /*E2E Profile 5 Counter*/
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cmdresp_header_t header; /*Structure containing Cmd Address*/
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uint8_t data[CMDRESP_PAYLOAD_SIZE]; /*Array containing CmdResp Payload*/
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} cmdresp_frame_t;
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typedef struct {
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uint16_t e2ecf1_crc; /*Profile 5 E2E Header*/
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uint8_t e2ecf2; /*E2E Profile 5 Counter*/
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cmdresp_header_t header; /*Structure containing Cmd Address*/
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uint8_t data[CMDRESP_PAYLOAD_EX_SIZE]; /*CmdResp Payload*/
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} cmdresp_frame_ex_t;
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#pragma pack(pop)
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#define CMDRESP_MAX_ACTIVE_LIST_COUNT 20U
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#define CMDRESP_CMD_FRAME_EX_SIZE 256
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#endif
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