1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * IBM ASM Service Processor Device Driver |
4 | * |
5 | * Copyright (C) IBM Corporation, 2004 |
6 | * |
7 | * Author: Max Asböck <amax@us.ibm.com> |
8 | */ |
9 | |
10 | #pragma pack(1) |
11 | struct { |
12 | u8 ; |
13 | u8 ; |
14 | u16 ; |
15 | u8 ; |
16 | u8 initiator_and_target; |
17 | u8 ; |
18 | u8 ; |
19 | u32 ; |
20 | }; |
21 | #pragma pack() |
22 | |
23 | #define \ |
24 | { .version = 0x01, \ |
25 | .message_flags = 0x00, \ |
26 | .function = 0xFF, \ |
27 | .initiator = 0x00, \ |
28 | .initiator_and_target = 0x40, \ |
29 | .target = 0x00, \ |
30 | .initiator_context = 0x0 } |
31 | |
32 | #define I2O_MESSAGE_SIZE 0x1000 |
33 | #define I2O_COMMAND_SIZE (I2O_MESSAGE_SIZE - sizeof(struct i2o_header)) |
34 | |
35 | #pragma pack(1) |
36 | struct i2o_message { |
37 | struct i2o_header ; |
38 | void *data; |
39 | }; |
40 | #pragma pack() |
41 | |
42 | static inline unsigned short outgoing_message_size(unsigned int data_size) |
43 | { |
44 | unsigned int size; |
45 | unsigned short i2o_size; |
46 | |
47 | if (data_size > I2O_COMMAND_SIZE) |
48 | data_size = I2O_COMMAND_SIZE; |
49 | |
50 | size = sizeof(struct i2o_header) + data_size; |
51 | |
52 | i2o_size = size / sizeof(u32); |
53 | |
54 | if (size % sizeof(u32)) |
55 | i2o_size++; |
56 | |
57 | return i2o_size; |
58 | } |
59 | |
60 | static inline u32 incoming_data_size(struct i2o_message *i2o_message) |
61 | { |
62 | return (sizeof(u32) * i2o_message->header.message_size); |
63 | } |
64 | |