| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Siemens SIMATIC IPC drivers |
| * |
| * Copyright (c) Siemens AG, 2018-2021 |
| * |
| * Authors: |
| * Henning Schild <[email protected]> |
| * Gerd Haeussler <[email protected]> |
| */ |
| |
| #ifndef __PLATFORM_DATA_X86_SIMATIC_IPC_H |
| #define __PLATFORM_DATA_X86_SIMATIC_IPC_H |
| |
| #include <linux/dmi.h> |
| #include <linux/platform_data/x86/simatic-ipc-base.h> |
| |
| #define SIMATIC_IPC_DMI_ENTRY_OEM 129 |
| /* binary type */ |
| #define SIMATIC_IPC_DMI_TYPE 0xff |
| #define SIMATIC_IPC_DMI_GROUP 0x05 |
| #define SIMATIC_IPC_DMI_ENTRY 0x02 |
| #define SIMATIC_IPC_DMI_TID 0x02 |
| |
| enum simatic_ipc_station_ids { |
| SIMATIC_IPC_INVALID_STATION_ID = 0, |
| SIMATIC_IPC_IPC227D = 0x00000501, |
| SIMATIC_IPC_IPC427D = 0x00000701, |
| SIMATIC_IPC_IPC227E = 0x00000901, |
| SIMATIC_IPC_IPC277E = 0x00000902, |
| SIMATIC_IPC_IPC427E = 0x00000A01, |
| SIMATIC_IPC_IPC477E = 0x00000A02, |
| SIMATIC_IPC_IPC127E = 0x00000D01, |
| SIMATIC_IPC_IPC227G = 0x00000F01, |
| SIMATIC_IPC_IPCBX_39A = 0x00001001, |
| SIMATIC_IPC_IPCPX_39A = 0x00001002, |
| }; |
| |
| static inline u32 simatic_ipc_get_station_id(u8 *data, int max_len) |
| { |
| struct { |
| u8 type; /* type (0xff = binary) */ |
| u8 len; /* len of data entry */ |
| u8 group; |
| u8 entry; |
| u8 tid; |
| __le32 station_id; /* station id (LE) */ |
| } __packed * data_entry = (void *)data + sizeof(struct dmi_header); |
| |
| while ((u8 *)data_entry < data + max_len) { |
| if (data_entry->type == SIMATIC_IPC_DMI_TYPE && |
| data_entry->len == sizeof(*data_entry) && |
| data_entry->group == SIMATIC_IPC_DMI_GROUP && |
| data_entry->entry == SIMATIC_IPC_DMI_ENTRY && |
| data_entry->tid == SIMATIC_IPC_DMI_TID) { |
| return le32_to_cpu(data_entry->station_id); |
| } |
| data_entry = (void *)((u8 *)(data_entry) + data_entry->len); |
| } |
| |
| return SIMATIC_IPC_INVALID_STATION_ID; |
| } |
| |
| static inline void |
| simatic_ipc_find_dmi_entry_helper(const struct dmi_header *dh, void *_data) |
| { |
| u32 *id = _data; |
| |
| if (dh->type != SIMATIC_IPC_DMI_ENTRY_OEM) |
| return; |
| |
| *id = simatic_ipc_get_station_id((u8 *)dh, dh->length); |
| } |
| |
| #endif /* __PLATFORM_DATA_X86_SIMATIC_IPC_H */ |
