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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * RapidIO configuration space access support
4 *
5 * Copyright 2005 MontaVista Software, Inc.
6 * Matt Porter <mporter@kernel.crashing.org>
7 */
8
9#include <linux/rio.h>
10#include <linux/module.h>
11
12#include <linux/rio_drv.h>
13
14/*
15 * Wrappers for all RIO configuration access functions. They just check
16 * alignment and call the low-level functions pointed to by rio_mport->ops.
17 */
18
19#define RIO_8_BAD 0
20#define RIO_16_BAD (offset & 1)
21#define RIO_32_BAD (offset & 3)
22
23/**
24 * RIO_LOP_READ - Generate rio_local_read_config_* functions
25 * @size: Size of configuration space read (8, 16, 32 bits)
26 * @type: C type of value argument
27 * @len: Length of configuration space read (1, 2, 4 bytes)
28 *
29 * Generates rio_local_read_config_* functions used to access
30 * configuration space registers on the local device.
31 */
32#define RIO_LOP_READ(size,type,len) \
33int __rio_local_read_config_##size \
34 (struct rio_mport *mport, u32 offset, type *value) \
35{ \
36 int res; \
37 u32 data = 0; \
38 if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
39 res = mport->ops->lcread(mport, mport->id, offset, len, &data); \
40 *value = (type)data; \
41 return res; \
42}
43
44/**
45 * RIO_LOP_WRITE - Generate rio_local_write_config_* functions
46 * @size: Size of configuration space write (8, 16, 32 bits)
47 * @type: C type of value argument
48 * @len: Length of configuration space write (1, 2, 4 bytes)
49 *
50 * Generates rio_local_write_config_* functions used to access
51 * configuration space registers on the local device.
52 */
53#define RIO_LOP_WRITE(size,type,len) \
54int __rio_local_write_config_##size \
55 (struct rio_mport *mport, u32 offset, type value) \
56{ \
57 if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
58 return mport->ops->lcwrite(mport, mport->id, offset, len, value);\
59}
60
61RIO_LOP_READ(8, u8, 1)
62RIO_LOP_READ(16, u16, 2)
63RIO_LOP_READ(32, u32, 4)
64RIO_LOP_WRITE(8, u8, 1)
65RIO_LOP_WRITE(16, u16, 2)
66RIO_LOP_WRITE(32, u32, 4)
67
68EXPORT_SYMBOL_GPL(__rio_local_read_config_8);
69EXPORT_SYMBOL_GPL(__rio_local_read_config_16);
70EXPORT_SYMBOL_GPL(__rio_local_read_config_32);
71EXPORT_SYMBOL_GPL(__rio_local_write_config_8);
72EXPORT_SYMBOL_GPL(__rio_local_write_config_16);
73EXPORT_SYMBOL_GPL(__rio_local_write_config_32);
74
75/**
76 * RIO_OP_READ - Generate rio_mport_read_config_* functions
77 * @size: Size of configuration space read (8, 16, 32 bits)
78 * @type: C type of value argument
79 * @len: Length of configuration space read (1, 2, 4 bytes)
80 *
81 * Generates rio_mport_read_config_* functions used to access
82 * configuration space registers on the local device.
83 */
84#define RIO_OP_READ(size,type,len) \
85int rio_mport_read_config_##size \
86 (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type *value) \
87{ \
88 int res; \
89 u32 data = 0; \
90 if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
91 res = mport->ops->cread(mport, mport->id, destid, hopcount, offset, len, &data); \
92 *value = (type)data; \
93 return res; \
94}
95
96/**
97 * RIO_OP_WRITE - Generate rio_mport_write_config_* functions
98 * @size: Size of configuration space write (8, 16, 32 bits)
99 * @type: C type of value argument
100 * @len: Length of configuration space write (1, 2, 4 bytes)
101 *
102 * Generates rio_mport_write_config_* functions used to access
103 * configuration space registers on the local device.
104 */
105#define RIO_OP_WRITE(size,type,len) \
106int rio_mport_write_config_##size \
107 (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type value) \
108{ \
109 if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
110 return mport->ops->cwrite(mport, mport->id, destid, hopcount, \
111 offset, len, value); \
112}
113
114RIO_OP_READ(8, u8, 1)
115RIO_OP_READ(16, u16, 2)
116RIO_OP_READ(32, u32, 4)
117RIO_OP_WRITE(8, u8, 1)
118RIO_OP_WRITE(16, u16, 2)
119RIO_OP_WRITE(32, u32, 4)
120
121EXPORT_SYMBOL_GPL(rio_mport_read_config_8);
122EXPORT_SYMBOL_GPL(rio_mport_read_config_16);
123EXPORT_SYMBOL_GPL(rio_mport_read_config_32);
124EXPORT_SYMBOL_GPL(rio_mport_write_config_8);
125EXPORT_SYMBOL_GPL(rio_mport_write_config_16);
126EXPORT_SYMBOL_GPL(rio_mport_write_config_32);
127
128/**
129 * rio_mport_send_doorbell - Send a doorbell message
130 *
131 * @mport: RIO master port
132 * @destid: RIO device destination ID
133 * @data: Doorbell message data
134 *
135 * Send a doorbell message to a RIO device. The doorbell message
136 * has a 16-bit info field provided by the data argument.
137 */
138int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, u16 data)
139{
140 return mport->ops->dsend(mport, mport->id, destid, data);
141}
142
143EXPORT_SYMBOL_GPL(rio_mport_send_doorbell);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * RapidIO configuration space access support
4 *
5 * Copyright 2005 MontaVista Software, Inc.
6 * Matt Porter <mporter@kernel.crashing.org>
7 */
8
9#include <linux/rio.h>
10#include <linux/module.h>
11
12#include <linux/rio_drv.h>
13
14/*
15 * Wrappers for all RIO configuration access functions. They just check
16 * alignment and call the low-level functions pointed to by rio_mport->ops.
17 */
18
19#define RIO_8_BAD 0
20#define RIO_16_BAD (offset & 1)
21#define RIO_32_BAD (offset & 3)
22
23/**
24 * RIO_LOP_READ - Generate rio_local_read_config_* functions
25 * @size: Size of configuration space read (8, 16, 32 bits)
26 * @type: C type of value argument
27 * @len: Length of configuration space read (1, 2, 4 bytes)
28 *
29 * Generates rio_local_read_config_* functions used to access
30 * configuration space registers on the local device.
31 */
32#define RIO_LOP_READ(size,type,len) \
33int __rio_local_read_config_##size \
34 (struct rio_mport *mport, u32 offset, type *value) \
35{ \
36 int res; \
37 u32 data = 0; \
38 if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
39 res = mport->ops->lcread(mport, mport->id, offset, len, &data); \
40 *value = (type)data; \
41 return res; \
42}
43
44/**
45 * RIO_LOP_WRITE - Generate rio_local_write_config_* functions
46 * @size: Size of configuration space write (8, 16, 32 bits)
47 * @type: C type of value argument
48 * @len: Length of configuration space write (1, 2, 4 bytes)
49 *
50 * Generates rio_local_write_config_* functions used to access
51 * configuration space registers on the local device.
52 */
53#define RIO_LOP_WRITE(size,type,len) \
54int __rio_local_write_config_##size \
55 (struct rio_mport *mport, u32 offset, type value) \
56{ \
57 if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
58 return mport->ops->lcwrite(mport, mport->id, offset, len, value);\
59}
60
61RIO_LOP_READ(8, u8, 1)
62RIO_LOP_READ(16, u16, 2)
63RIO_LOP_READ(32, u32, 4)
64RIO_LOP_WRITE(8, u8, 1)
65RIO_LOP_WRITE(16, u16, 2)
66RIO_LOP_WRITE(32, u32, 4)
67
68EXPORT_SYMBOL_GPL(__rio_local_read_config_8);
69EXPORT_SYMBOL_GPL(__rio_local_read_config_16);
70EXPORT_SYMBOL_GPL(__rio_local_read_config_32);
71EXPORT_SYMBOL_GPL(__rio_local_write_config_8);
72EXPORT_SYMBOL_GPL(__rio_local_write_config_16);
73EXPORT_SYMBOL_GPL(__rio_local_write_config_32);
74
75/**
76 * RIO_OP_READ - Generate rio_mport_read_config_* functions
77 * @size: Size of configuration space read (8, 16, 32 bits)
78 * @type: C type of value argument
79 * @len: Length of configuration space read (1, 2, 4 bytes)
80 *
81 * Generates rio_mport_read_config_* functions used to access
82 * configuration space registers on the local device.
83 */
84#define RIO_OP_READ(size,type,len) \
85int rio_mport_read_config_##size \
86 (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type *value) \
87{ \
88 int res; \
89 u32 data = 0; \
90 if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
91 res = mport->ops->cread(mport, mport->id, destid, hopcount, offset, len, &data); \
92 *value = (type)data; \
93 return res; \
94}
95
96/**
97 * RIO_OP_WRITE - Generate rio_mport_write_config_* functions
98 * @size: Size of configuration space write (8, 16, 32 bits)
99 * @type: C type of value argument
100 * @len: Length of configuration space write (1, 2, 4 bytes)
101 *
102 * Generates rio_mport_write_config_* functions used to access
103 * configuration space registers on the local device.
104 */
105#define RIO_OP_WRITE(size,type,len) \
106int rio_mport_write_config_##size \
107 (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type value) \
108{ \
109 if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
110 return mport->ops->cwrite(mport, mport->id, destid, hopcount, \
111 offset, len, value); \
112}
113
114RIO_OP_READ(8, u8, 1)
115RIO_OP_READ(16, u16, 2)
116RIO_OP_READ(32, u32, 4)
117RIO_OP_WRITE(8, u8, 1)
118RIO_OP_WRITE(16, u16, 2)
119RIO_OP_WRITE(32, u32, 4)
120
121EXPORT_SYMBOL_GPL(rio_mport_read_config_8);
122EXPORT_SYMBOL_GPL(rio_mport_read_config_16);
123EXPORT_SYMBOL_GPL(rio_mport_read_config_32);
124EXPORT_SYMBOL_GPL(rio_mport_write_config_8);
125EXPORT_SYMBOL_GPL(rio_mport_write_config_16);
126EXPORT_SYMBOL_GPL(rio_mport_write_config_32);
127
128/**
129 * rio_mport_send_doorbell - Send a doorbell message
130 *
131 * @mport: RIO master port
132 * @destid: RIO device destination ID
133 * @data: Doorbell message data
134 *
135 * Send a doorbell message to a RIO device. The doorbell message
136 * has a 16-bit info field provided by the data argument.
137 */
138int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, u16 data)
139{
140 return mport->ops->dsend(mport, mport->id, destid, data);
141}
142
143EXPORT_SYMBOL_GPL(rio_mport_send_doorbell);