1*e2be04c7SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 26c4e9767SCyril Bur /* 36c4e9767SCyril Bur * Copyright 2017 IBM Corp. 46c4e9767SCyril Bur * 56c4e9767SCyril Bur * This program is free software; you can redistribute it and/or 66c4e9767SCyril Bur * modify it under the terms of the GNU General Public License 76c4e9767SCyril Bur * as published by the Free Software Foundation; either version 86c4e9767SCyril Bur * 2 of the License, or (at your option) any later version. 96c4e9767SCyril Bur */ 106c4e9767SCyril Bur 116c4e9767SCyril Bur #ifndef _UAPI_LINUX_ASPEED_LPC_CTRL_H 126c4e9767SCyril Bur #define _UAPI_LINUX_ASPEED_LPC_CTRL_H 136c4e9767SCyril Bur 146c4e9767SCyril Bur #include <linux/ioctl.h> 15f580ff0eSArnd Bergmann #include <linux/types.h> 166c4e9767SCyril Bur 176c4e9767SCyril Bur /* Window types */ 186c4e9767SCyril Bur #define ASPEED_LPC_CTRL_WINDOW_FLASH 1 196c4e9767SCyril Bur #define ASPEED_LPC_CTRL_WINDOW_MEMORY 2 206c4e9767SCyril Bur 216c4e9767SCyril Bur /* 226c4e9767SCyril Bur * This driver provides a window for the host to access a BMC resource 236c4e9767SCyril Bur * across the BMC <-> Host LPC bus. 246c4e9767SCyril Bur * 256c4e9767SCyril Bur * window_type: The BMC resource that the host will access through the 266c4e9767SCyril Bur * window. BMC flash and BMC RAM. 276c4e9767SCyril Bur * 286c4e9767SCyril Bur * window_id: For each window type there may be multiple windows, 296c4e9767SCyril Bur * these are referenced by ID. 306c4e9767SCyril Bur * 316c4e9767SCyril Bur * flags: Reserved for future use, this field is expected to be 326c4e9767SCyril Bur * zeroed. 336c4e9767SCyril Bur * 346c4e9767SCyril Bur * addr: Address on the host LPC bus that the specified window should 356c4e9767SCyril Bur * be mapped. This address must be power of two aligned. 366c4e9767SCyril Bur * 376c4e9767SCyril Bur * offset: Offset into the BMC window that should be mapped to the 386c4e9767SCyril Bur * host (at addr). This must be a multiple of size. 396c4e9767SCyril Bur * 406c4e9767SCyril Bur * size: The size of the mapping. The smallest possible size is 64K. 416c4e9767SCyril Bur * This must be power of two aligned. 426c4e9767SCyril Bur * 436c4e9767SCyril Bur */ 446c4e9767SCyril Bur 456c4e9767SCyril Bur struct aspeed_lpc_ctrl_mapping { 466c4e9767SCyril Bur __u8 window_type; 476c4e9767SCyril Bur __u8 window_id; 486c4e9767SCyril Bur __u16 flags; 496c4e9767SCyril Bur __u32 addr; 506c4e9767SCyril Bur __u32 offset; 516c4e9767SCyril Bur __u32 size; 526c4e9767SCyril Bur }; 536c4e9767SCyril Bur 546c4e9767SCyril Bur #define __ASPEED_LPC_CTRL_IOCTL_MAGIC 0xb2 556c4e9767SCyril Bur 566c4e9767SCyril Bur #define ASPEED_LPC_CTRL_IOCTL_GET_SIZE _IOWR(__ASPEED_LPC_CTRL_IOCTL_MAGIC, \ 576c4e9767SCyril Bur 0x00, struct aspeed_lpc_ctrl_mapping) 586c4e9767SCyril Bur 596c4e9767SCyril Bur #define ASPEED_LPC_CTRL_IOCTL_MAP _IOW(__ASPEED_LPC_CTRL_IOCTL_MAGIC, \ 606c4e9767SCyril Bur 0x01, struct aspeed_lpc_ctrl_mapping) 616c4e9767SCyril Bur 626c4e9767SCyril Bur #endif /* _UAPI_LINUX_ASPEED_LPC_CTRL_H */ 63