1158115Sume/* SPDX-License-Identifier: GPL-2.0 */ 2158115Sume/* 3158115Sume * Siemens SIMATIC IPC drivers 4158115Sume * 5158115Sume * Copyright (c) Siemens AG, 2018-2023 6158115Sume * 7158115Sume * Authors: 8158115Sume * Henning Schild <henning.schild@siemens.com> 9158115Sume * Gerd Haeussler <gerd.haeussler.ext@siemens.com> 10158115Sume */ 11158115Sume 12158115Sume#ifndef __PLATFORM_DATA_X86_SIMATIC_IPC_H 13158115Sume#define __PLATFORM_DATA_X86_SIMATIC_IPC_H 14158115Sume 15158115Sume#include <linux/dmi.h> 16158115Sume#include <linux/platform_data/x86/simatic-ipc-base.h> 17158115Sume 18158115Sume#define SIMATIC_IPC_DMI_ENTRY_OEM 129 19158115Sume/* binary type */ 20158115Sume#define SIMATIC_IPC_DMI_TYPE 0xff 21158115Sume#define SIMATIC_IPC_DMI_GROUP 0x05 22158115Sume#define SIMATIC_IPC_DMI_ENTRY 0x02 23158115Sume#define SIMATIC_IPC_DMI_TID 0x02 24158115Sume 25158115Sumeenum simatic_ipc_station_ids { 26158115Sume SIMATIC_IPC_INVALID_STATION_ID = 0, 27158115Sume SIMATIC_IPC_IPC227D = 0x00000501, 28158115Sume SIMATIC_IPC_IPC427D = 0x00000701, 29171795Sbushman SIMATIC_IPC_IPC227E = 0x00000901, 30171795Sbushman SIMATIC_IPC_IPC277E = 0x00000902, 31158115Sume SIMATIC_IPC_IPC427E = 0x00000A01, 32158115Sume SIMATIC_IPC_IPC477E = 0x00000A02, 33158115Sume SIMATIC_IPC_IPC127E = 0x00000D01, 34158115Sume SIMATIC_IPC_IPC227G = 0x00000F01, 35158115Sume SIMATIC_IPC_IPC277G = 0x00000F02, 36158115Sume SIMATIC_IPC_IPCBX_39A = 0x00001001, 37158115Sume SIMATIC_IPC_IPCPX_39A = 0x00001002, 38158115Sume SIMATIC_IPC_IPCBX_21A = 0x00001101, 39158115Sume SIMATIC_IPC_IPCBX_56A = 0x00001201, 40158115Sume SIMATIC_IPC_IPCBX_59A = 0x00001202, 41158115Sume}; 42158115Sume 43158115Sumestatic inline u32 simatic_ipc_get_station_id(u8 *data, int max_len) 44158115Sume{ 45158115Sume struct { 46158115Sume u8 type; /* type (0xff = binary) */ 47158115Sume u8 len; /* len of data entry */ 48158115Sume u8 group; 49158115Sume u8 entry; 50158115Sume u8 tid; 51158115Sume __le32 station_id; /* station id (LE) */ 52158115Sume } __packed * data_entry = (void *)data + sizeof(struct dmi_header); 53158115Sume 54158115Sume while ((u8 *)data_entry < data + max_len) { 55158115Sume if (data_entry->type == SIMATIC_IPC_DMI_TYPE && 56158115Sume data_entry->len == sizeof(*data_entry) && 57158115Sume data_entry->group == SIMATIC_IPC_DMI_GROUP && 58158115Sume data_entry->entry == SIMATIC_IPC_DMI_ENTRY && 59158115Sume data_entry->tid == SIMATIC_IPC_DMI_TID) { 60158115Sume return le32_to_cpu(data_entry->station_id); 61158115Sume } 62194087Sdes data_entry = (void *)((u8 *)(data_entry) + data_entry->len); 63158115Sume } 64158115Sume 65158115Sume return SIMATIC_IPC_INVALID_STATION_ID; 66158115Sume} 67158115Sume 68158115Sumestatic inline void 69158115Sumesimatic_ipc_find_dmi_entry_helper(const struct dmi_header *dh, void *_data) 70158115Sume{ 71158115Sume u32 *id = _data; 72158115Sume 73158115Sume if (dh->type != SIMATIC_IPC_DMI_ENTRY_OEM) 74158115Sume return; 75158115Sume 76158115Sume *id = simatic_ipc_get_station_id((u8 *)dh, dh->length); 77158115Sume} 78158115Sume 79158115Sume#endif /* __PLATFORM_DATA_X86_SIMATIC_IPC_H */ 80158115Sume