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
|
/*
Mantis PCI bridge driver
Copyright (C) Manu Abraham (abraham.manu@gmail.com)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/kmod.h>
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/pci.h>
#include <asm/irq.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include "dmxdev.h"
#include "dvbdev.h"
#include "dvb_demux.h"
#include "dvb_frontend.h"
#include "dvb_net.h"
#include <asm/irq.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include "mantis_common.h"
#include "mantis_reg.h"
#include "mantis_pci.h"
#define DRIVER_NAME "Mantis Core"
int __devinit mantis_pci_init(struct mantis_pci *mantis)
{
u8 revision, latency;
struct mantis_hwconfig *config = mantis->hwconfig;
struct pci_dev *pdev = mantis->pdev;
int err, ret = 0;
dprintk(MANTIS_ERROR, 0, "found a %s PCI %s device on (%02x:%02x.%x),\n",
config->model_name,
config->dev_type,
mantis->pdev->bus->number,
PCI_SLOT(mantis->pdev->devfn),
PCI_FUNC(mantis->pdev->devfn));
err = pci_enable_device(pdev);
if (err != 0) {
ret = -ENODEV;
dprintk(MANTIS_ERROR, 1, "ERROR: PCI enable failed <%i>", err);
goto fail0;
}
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
if (err != 0) {
dprintk(MANTIS_ERROR, 1, "ERROR: Unable to obtain 32 bit DMA <%i>", err);
ret = -ENOMEM;
goto fail1;
}
pci_set_master(pdev);
if (!request_mem_region(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0),
DRIVER_NAME)) {
dprintk(MANTIS_ERROR, 1, "ERROR: BAR0 Request failed !");
ret = -ENODEV;
goto fail1;
}
mantis->mmio = ioremap(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if (!mantis->mmio) {
dprintk(MANTIS_ERROR, 1, "ERROR: BAR0 remap failed !");
ret = -ENODEV;
goto fail2;
}
pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency);
pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
mantis->latency = latency;
mantis->revision = revision;
dprintk(MANTIS_ERROR, 0, " Mantis Rev %d [%04x:%04x], ",
mantis->revision,
mantis->pdev->subsystem_vendor,
mantis->pdev->subsystem_device);
dprintk(MANTIS_ERROR, 0,
"irq: %d, latency: %d\n memory: 0x%lx, mmio: 0x%p\n",
mantis->pdev->irq,
mantis->latency,
mantis->mantis_addr,
mantis->mmio);
err = request_irq(pdev->irq,
config->irq_handler,
IRQF_SHARED,
DRIVER_NAME,
mantis);
if (err != 0) {
dprintk(MANTIS_ERROR, 1, "ERROR: IRQ registration failed ! <%d>", err);
ret = -ENODEV;
goto fail3;
}
pci_set_drvdata(pdev, mantis);
return ret;
/* Error conditions */
fail3:
dprintk(MANTIS_ERROR, 1, "ERROR: <%d> I/O unmap", ret);
if (mantis->mmio)
iounmap(mantis->mmio);
fail2:
dprintk(MANTIS_ERROR, 1, "ERROR: <%d> releasing regions", ret);
release_mem_region(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
fail1:
dprintk(MANTIS_ERROR, 1, "ERROR: <%d> disabling device", ret);
pci_disable_device(pdev);
fail0:
dprintk(MANTIS_ERROR, 1, "ERROR: <%d> exiting", ret);
pci_set_drvdata(pdev, NULL);
return ret;
}
EXPORT_SYMBOL_GPL(mantis_pci_init);
void __devexit mantis_pci_exit(struct mantis_pci *mantis)
{
struct pci_dev *pdev = mantis->pdev;
dprintk(MANTIS_NOTICE, 1, " mem: 0x%p", mantis->mmio);
free_irq(pdev->irq, mantis);
if (mantis->mmio) {
iounmap(mantis->mmio);
release_mem_region(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
}
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
}
EXPORT_SYMBOL_GPL(mantis_pci_exit);
MODULE_DESCRIPTION("Mantis PCI DTV bridge driver");
MODULE_AUTHOR("Manu Abraham");
MODULE_LICENSE("GPL");
|
