include/linux/soc/qcom/apr.h

Source file repositories/reference/linux-study-clean/include/linux/soc/qcom/apr.h

File Facts

System
Linux kernel
Corpus path
include/linux/soc/qcom/apr.h
Extension
.h
Size
4990 bytes
Lines
198
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

extern const 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;
};

struct gpr_hdr {
	uint32_t version:4;
	uint32_t hdr_size:4;
	uint32_t pkt_size:24;
	uint32_t dest_domain:8;
	uint32_t src_domain:8;
	uint32_t reserved:16;
	uint32_t src_port;
	uint32_t dest_port;
	uint32_t token;
	uint32_t opcode;
} __packed;

struct gpr_pkt {
	struct gpr_hdr hdr;
	uint32_t payload[];
};

struct gpr_resp_pkt {
	struct gpr_hdr hdr;
	void *payload;
	int payload_size;
};

Annotation

Implementation Notes