1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
<http://rt2x00.serialmonkey.com>
*/
/*
Module: rt2x00pci
Abstract: rt2x00 generic pci device routines.
*/
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include "rt2x00.h"
#include "rt2x00pci.h"
/*
* PCI driver handlers.
*/
static void rt2x00pci_free_reg(struct rt2x00_dev *rt2x00dev)
{
kfree(rt2x00dev->rf);
rt2x00dev->rf = NULL;
kfree(rt2x00dev->eeprom);
rt2x00dev->eeprom = NULL;
if (rt2x00dev->csr.base) {
iounmap(rt2x00dev->csr.base);
rt2x00dev->csr.base = NULL;
}
}
static int rt2x00pci_alloc_reg(struct rt2x00_dev *rt2x00dev)
{
struct pci_dev *pci_dev = to_pci_dev(rt2x00dev->dev);
rt2x00dev->csr.base = pci_ioremap_bar(pci_dev, 0);
if (!rt2x00dev->csr.base)
goto exit;
rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
if (!rt2x00dev->eeprom)
goto exit;
rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
if (!rt2x00dev->rf)
goto exit;
return 0;
exit:
rt2x00_probe_err("Failed to allocate registers\n");
rt2x00pci_free_reg(rt2x00dev);
return -ENOMEM;
}
int rt2x00pci_probe(struct pci_dev *pci_dev, const struct rt2x00_ops *ops)
{
struct ieee80211_hw *hw;
struct rt2x00_dev *rt2x00dev;
int retval;
u16 chip;
retval = pci_enable_device(pci_dev);
if (retval) {
rt2x00_probe_err("Enable device failed\n");
return retval;
}
retval = pci_request_regions(pci_dev, pci_name(pci_dev));
if (retval) {
rt2x00_probe_err("PCI request regions failed\n");
goto exit_disable_device;
}
pci_set_master(pci_dev);
if (pci_set_mwi(pci_dev))
rt2x00_probe_err("MWI not available\n");
if (dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32))) {
rt2x00_probe_err("PCI DMA not supported\n");
retval = -EIO;
goto exit_release_regions;
}
hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
if (!hw) {
rt2x00_probe_err("Failed to allocate hardware\n");
retval = -ENOMEM;
goto exit_release_regions;
}
pci_set_drvdata(pci_dev, hw);
rt2x00dev = hw->priv;
rt2x00dev->dev = &pci_dev->dev;
rt2x00dev->ops = ops;
rt2x00dev->hw = hw;
rt2x00dev->irq = pci_dev->irq;
rt2x00dev->name = ops->name;
if (pci_is_pcie(pci_dev))
rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
else
rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_PCI);
retval = rt2x00pci_alloc_reg(rt2x00dev);
if (retval)
goto exit_free_device;
/*
* Because rt3290 chip use different efuse offset to read efuse data.
* So before read efuse it need to indicate it is the
* rt3290 or not.
*/
pci_read_config_word(pci_dev, PCI_DEVICE_ID, &chip);
rt2x00dev->chip.rt = chip;
retval = rt2x00lib_probe_dev(rt2x00dev);
if (retval)
goto exit_free_reg;
return 0;
exit_free_reg:
rt2x00pci_free_reg(rt2x00dev);
exit_free_device:
ieee80211_free_hw(hw);
exit_release_regions:
pci_clear_mwi(pci_dev);
pci_release_regions(pci_dev);
exit_disable_device:
pci_disable_device(pci_dev);
return retval;
}
EXPORT_SYMBOL_GPL(rt2x00pci_probe);
void rt2x00pci_remove(struct pci_dev *pci_dev)
{
struct ieee80211_hw *hw = pci_get_drvdata(pci_dev);
struct rt2x00_dev *rt2x00dev = hw->priv;
/*
* Free all allocated data.
*/
rt2x00lib_remove_dev(rt2x00dev);
rt2x00pci_free_reg(rt2x00dev);
ieee80211_free_hw(hw);
/*
* Free the PCI device data.
*/
pci_clear_mwi(pci_dev);
pci_disable_device(pci_dev);
pci_release_regions(pci_dev);
}
EXPORT_SYMBOL_GPL(rt2x00pci_remove);
static int __maybe_unused rt2x00pci_suspend(struct device *dev)
{
struct ieee80211_hw *hw = dev_get_drvdata(dev);
struct rt2x00_dev *rt2x00dev = hw->priv;
return rt2x00lib_suspend(rt2x00dev);
}
static int __maybe_unused rt2x00pci_resume(struct device *dev)
{
struct ieee80211_hw *hw = dev_get_drvdata(dev);
struct rt2x00_dev *rt2x00dev = hw->priv;
return rt2x00lib_resume(rt2x00dev);
}
SIMPLE_DEV_PM_OPS(rt2x00pci_pm_ops, rt2x00pci_suspend, rt2x00pci_resume);
EXPORT_SYMBOL_GPL(rt2x00pci_pm_ops);
/*
* rt2x00pci module information.
*/
MODULE_AUTHOR(DRV_PROJECT);
MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("rt2x00 pci library");
MODULE_LICENSE("GPL");
|
