| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * IBM ASM Service Processor Device Driver |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | * |
| 18 | * Copyright (C) IBM Corporation, 2004 |
| 19 | * |
| 20 | * Author: Max Asböck <amax@us.ibm.com> |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #pragma pack(1) |
| 25 | struct i2o_header { |
| 26 | u8 version; |
| 27 | u8 message_flags; |
| 28 | u16 message_size; |
| 29 | u8 target; |
| 30 | u8 initiator_and_target; |
| 31 | u8 initiator; |
| 32 | u8 function; |
| 33 | u32 initiator_context; |
| 34 | }; |
| 35 | #pragma pack() |
| 36 | |
| 37 | #define I2O_HEADER_TEMPLATE \ |
| 38 | { .version = 0x01, \ |
| 39 | .message_flags = 0x00, \ |
| 40 | .function = 0xFF, \ |
| 41 | .initiator = 0x00, \ |
| 42 | .initiator_and_target = 0x40, \ |
| 43 | .target = 0x00, \ |
| 44 | .initiator_context = 0x0 } |
| 45 | |
| 46 | #define I2O_MESSAGE_SIZE 0x1000 |
| 47 | #define I2O_COMMAND_SIZE (I2O_MESSAGE_SIZE - sizeof(struct i2o_header)) |
| 48 | |
| 49 | #pragma pack(1) |
| 50 | struct i2o_message { |
| 51 | struct i2o_header header; |
| 52 | void *data; |
| 53 | }; |
| 54 | #pragma pack() |
| 55 | |
| 56 | static inline unsigned short outgoing_message_size(unsigned int data_size) |
| 57 | { |
| 58 | unsigned int size; |
| 59 | unsigned short i2o_size; |
| 60 | |
| 61 | if (data_size > I2O_COMMAND_SIZE) |
| 62 | data_size = I2O_COMMAND_SIZE; |
| 63 | |
| 64 | size = sizeof(struct i2o_header) + data_size; |
| 65 | |
| 66 | i2o_size = size / sizeof(u32); |
| 67 | |
| 68 | if (size % sizeof(u32)) |
| 69 | i2o_size++; |
| 70 | |
| 71 | return i2o_size; |
| 72 | } |
| 73 | |
| 74 | static inline u32 incoming_data_size(struct i2o_message *i2o_message) |
| 75 | { |
| 76 | return (sizeof(u32) * i2o_message->header.message_size); |
| 77 | } |