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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef SQ_SCPI_H
#define SQ_SCPI_H
#include <stddef.h>
#include <stdint.h>
/*
* An SCPI command consists of a header and a payload.
* The following structure describes the header. It is 64-bit long.
*/
typedef struct {
/* Command ID */
uint32_t id : 7;
/* Set ID. Identifies whether this is a standard or extended command. */
uint32_t set : 1;
/* Sender ID to match a reply. The value is sender specific. */
uint32_t sender : 8;
/* Size of the payload in bytes (0 - 511) */
uint32_t size : 9;
uint32_t reserved : 7;
/*
* Status indicating the success of a command.
* See the enum below.
*/
uint32_t status;
} scpi_cmd_t;
typedef enum {
SCPI_SET_NORMAL = 0, /* Normal SCPI commands */
SCPI_SET_EXTENDED /* Extended SCPI commands */
} scpi_set_t;
enum {
SCP_OK = 0, /* Success */
SCP_E_PARAM, /* Invalid parameter(s) */
SCP_E_ALIGN, /* Invalid alignment */
SCP_E_SIZE, /* Invalid size */
SCP_E_HANDLER, /* Invalid handler or callback */
SCP_E_ACCESS, /* Invalid access or permission denied */
SCP_E_RANGE, /* Value out of range */
SCP_E_TIMEOUT, /* Time out has ocurred */
SCP_E_NOMEM, /* Invalid memory area or pointer */
SCP_E_PWRSTATE, /* Invalid power state */
SCP_E_SUPPORT, /* Feature not supported or disabled */
SCPI_E_DEVICE, /* Device error */
SCPI_E_BUSY, /* Device is busy */
};
typedef uint32_t scpi_status_t;
typedef enum {
SCPI_CMD_SCP_READY = 0x01,
SCPI_CMD_SET_POWER_STATE = 0x03,
SCPI_CMD_SYS_POWER_STATE = 0x05
} scpi_command_t;
typedef enum {
scpi_power_on = 0,
scpi_power_retention = 1,
scpi_power_off = 3,
} scpi_power_state_t;
typedef enum {
scpi_system_shutdown = 0,
scpi_system_reboot = 1,
scpi_system_reset = 2
} scpi_system_state_t;
extern int scpi_wait_ready(void);
extern void scpi_set_sq_power_state(unsigned int mpidr,
scpi_power_state_t cpu_state,
scpi_power_state_t cluster_state,
scpi_power_state_t css_state);
uint32_t scpi_sys_power_state(scpi_system_state_t system_state);
uint32_t scpi_get_draminfo(struct draminfo *info);
#endif /* SQ_SCPI_H */
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