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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __QCOM_APR_H_
#define __QCOM_APR_H_
#include <linux/spinlock.h>
#include <linux/device.h>
#include <linux/mod_devicetable.h>
#include <dt-bindings/soc/qcom,apr.h>
extern struct bus_type aprbus;
#define APR_HDR_LEN(hdr_len) ((hdr_len)/4)
/*
* HEADER field
* version:0:3
* header_size : 4:7
* message_type : 8:9
* reserved: 10:15
*/
#define APR_HDR_FIELD(msg_type, hdr_len, ver)\
(((msg_type & 0x3) << 8) | ((hdr_len & 0xF) << 4) | (ver & 0xF))
#define APR_HDR_SIZE sizeof(struct apr_hdr)
#define APR_SEQ_CMD_HDR_FIELD APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD, \
APR_HDR_LEN(APR_HDR_SIZE), \
APR_PKT_VER)
/* Version */
#define APR_PKT_VER 0x0
/* Command and Response Types */
#define APR_MSG_TYPE_EVENT 0x0
#define APR_MSG_TYPE_CMD_RSP 0x1
#define APR_MSG_TYPE_SEQ_CMD 0x2
#define APR_MSG_TYPE_NSEQ_CMD 0x3
#define APR_MSG_TYPE_MAX 0x04
/* APR Basic Response Message */
#define APR_BASIC_RSP_RESULT 0x000110E8
#define APR_RSP_ACCEPTED 0x000100BE
struct aprv2_ibasic_rsp_result_t {
uint32_t opcode;
uint32_t status;
};
/* hdr field Ver [0:3], Size [4:7], Message type [8:10] */
#define APR_HDR_FIELD_VER(h) (h & 0x000F)
#define APR_HDR_FIELD_SIZE(h) ((h & 0x00F0) >> 4)
#define APR_HDR_FIELD_SIZE_BYTES(h) (((h & 0x00F0) >> 4) * 4)
#define APR_HDR_FIELD_MT(h) ((h & 0x0300) >> 8)
struct apr_hdr {
uint16_t hdr_field;
uint16_t pkt_size;
uint8_t src_svc;
uint8_t src_domain;
uint16_t src_port;
uint8_t dest_svc;
uint8_t dest_domain;
uint16_t dest_port;
uint32_t token;
uint32_t opcode;
} __packed;
struct apr_pkt {
struct apr_hdr hdr;
uint8_t payload[];
};
struct apr_resp_pkt {
struct apr_hdr hdr;
void *payload;
int payload_size;
};
/* Bits 0 to 15 -- Minor version, Bits 16 to 31 -- Major version */
#define APR_SVC_MAJOR_VERSION(v) ((v >> 16) & 0xFF)
#define APR_SVC_MINOR_VERSION(v) (v & 0xFF)
struct apr_device {
struct device dev;
uint16_t svc_id;
uint16_t domain_id;
uint32_t version;
char name[APR_NAME_SIZE];
const char *service_path;
spinlock_t lock;
struct list_head node;
};
#define to_apr_device(d) container_of(d, struct apr_device, dev)
struct apr_driver {
int (*probe)(struct apr_device *sl);
int (*remove)(struct apr_device *sl);
int (*callback)(struct apr_device *a,
struct apr_resp_pkt *d);
struct device_driver driver;
const struct apr_device_id *id_table;
};
#define to_apr_driver(d) container_of(d, struct apr_driver, driver)
/*
* use a macro to avoid include chaining to get THIS_MODULE
*/
#define apr_driver_register(drv) __apr_driver_register(drv, THIS_MODULE)
int __apr_driver_register(struct apr_driver *drv, struct module *owner);
void apr_driver_unregister(struct apr_driver *drv);
/**
* module_apr_driver() - Helper macro for registering a aprbus driver
* @__aprbus_driver: aprbus_driver struct
*
* Helper macro for aprbus drivers which do not do anything special in
* module init/exit. This eliminates a lot of boilerplate. Each module
* may only use this macro once, and calling it replaces module_init()
* and module_exit()
*/
#define module_apr_driver(__apr_driver) \
module_driver(__apr_driver, apr_driver_register, \
apr_driver_unregister)
int apr_send_pkt(struct apr_device *adev, struct apr_pkt *pkt);
#endif /* __QCOM_APR_H_ */
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