1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_X86_INTEL_SCU_IPC_H_ 3 #define _ASM_X86_INTEL_SCU_IPC_H_ 4 5 #include <linux/notifier.h> 6 7 #define IPCMSG_INDIRECT_READ 0x02 8 #define IPCMSG_INDIRECT_WRITE 0x05 9 10 #define IPCMSG_COLD_OFF 0x80 /* Only for Tangier */ 11 12 #define IPCMSG_WARM_RESET 0xF0 13 #define IPCMSG_COLD_RESET 0xF1 14 #define IPCMSG_SOFT_RESET 0xF2 15 #define IPCMSG_COLD_BOOT 0xF3 16 17 #define IPCMSG_VRTC 0xFA /* Set vRTC device */ 18 /* Command id associated with message IPCMSG_VRTC */ 19 #define IPC_CMD_VRTC_SETTIME 1 /* Set time */ 20 #define IPC_CMD_VRTC_SETALARM 2 /* Set alarm */ 21 22 /* Read single register */ 23 int intel_scu_ipc_ioread8(u16 addr, u8 *data); 24 25 /* Read a vector */ 26 int intel_scu_ipc_readv(u16 *addr, u8 *data, int len); 27 28 /* Write single register */ 29 int intel_scu_ipc_iowrite8(u16 addr, u8 data); 30 31 /* Write a vector */ 32 int intel_scu_ipc_writev(u16 *addr, u8 *data, int len); 33 34 /* Update single register based on the mask */ 35 int intel_scu_ipc_update_register(u16 addr, u8 data, u8 mask); 36 37 /* Issue commands to the SCU with or without data */ 38 int intel_scu_ipc_simple_command(int cmd, int sub); 39 int intel_scu_ipc_command(int cmd, int sub, u32 *in, int inlen, 40 u32 *out, int outlen); 41 42 extern struct blocking_notifier_head intel_scu_notifier; 43 44 static inline void intel_scu_notifier_add(struct notifier_block *nb) 45 { 46 blocking_notifier_chain_register(&intel_scu_notifier, nb); 47 } 48 49 static inline void intel_scu_notifier_remove(struct notifier_block *nb) 50 { 51 blocking_notifier_chain_unregister(&intel_scu_notifier, nb); 52 } 53 54 static inline int intel_scu_notifier_post(unsigned long v, void *p) 55 { 56 return blocking_notifier_call_chain(&intel_scu_notifier, v, p); 57 } 58 59 #define SCU_AVAILABLE 1 60 #define SCU_DOWN 2 61 62 #endif 63