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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_INTEL_SCU_IPC_H_
#define _ASM_X86_INTEL_SCU_IPC_H_
#include <linux/notifier.h>
#define IPCMSG_INDIRECT_READ 0x02
#define IPCMSG_INDIRECT_WRITE 0x05
#define IPCMSG_COLD_OFF 0x80 /* Only for Tangier */
#define IPCMSG_WARM_RESET 0xF0
#define IPCMSG_COLD_RESET 0xF1
#define IPCMSG_SOFT_RESET 0xF2
#define IPCMSG_COLD_BOOT 0xF3
#define IPCMSG_VRTC 0xFA /* Set vRTC device */
/* Command id associated with message IPCMSG_VRTC */
#define IPC_CMD_VRTC_SETTIME 1 /* Set time */
#define IPC_CMD_VRTC_SETALARM 2 /* Set alarm */
/* Read single register */
int intel_scu_ipc_ioread8(u16 addr, u8 *data);
/* Read a vector */
int intel_scu_ipc_readv(u16 *addr, u8 *data, int len);
/* Write single register */
int intel_scu_ipc_iowrite8(u16 addr, u8 data);
/* Write a vector */
int intel_scu_ipc_writev(u16 *addr, u8 *data, int len);
/* Update single register based on the mask */
int intel_scu_ipc_update_register(u16 addr, u8 data, u8 mask);
/* Issue commands to the SCU with or without data */
int intel_scu_ipc_simple_command(int cmd, int sub);
int intel_scu_ipc_command(int cmd, int sub, u32 *in, int inlen,
u32 *out, int outlen);
extern struct blocking_notifier_head intel_scu_notifier;
static inline void intel_scu_notifier_add(struct notifier_block *nb)
{
blocking_notifier_chain_register(&intel_scu_notifier, nb);
}
static inline void intel_scu_notifier_remove(struct notifier_block *nb)
{
blocking_notifier_chain_unregister(&intel_scu_notifier, nb);
}
static inline int intel_scu_notifier_post(unsigned long v, void *p)
{
return blocking_notifier_call_chain(&intel_scu_notifier, v, p);
}
#define SCU_AVAILABLE 1
#define SCU_DOWN 2
#endif
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