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
|
/*
* NAND Flash Controller Device Driver
* Copyright © 2009-2010, Intel Corporation and its suppliers.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include "denali.h"
#define DENALI_NAND_NAME "denali-nand-pci"
/* List of platforms this NAND controller has be integrated into */
static const struct pci_device_id denali_pci_ids[] = {
{ PCI_VDEVICE(INTEL, 0x0701), INTEL_CE4100 },
{ PCI_VDEVICE(INTEL, 0x0809), INTEL_MRST },
{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, denali_pci_ids);
static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
int ret = -ENODEV;
resource_size_t csr_base, mem_base;
unsigned long csr_len, mem_len;
struct denali_nand_info *denali;
denali = kzalloc(sizeof(*denali), GFP_KERNEL);
if (!denali)
return -ENOMEM;
ret = pci_enable_device(dev);
if (ret) {
pr_err("Spectra: pci_enable_device failed.\n");
goto failed_alloc_memery;
}
if (id->driver_data == INTEL_CE4100) {
denali->platform = INTEL_CE4100;
mem_base = pci_resource_start(dev, 0);
mem_len = pci_resource_len(dev, 1);
csr_base = pci_resource_start(dev, 1);
csr_len = pci_resource_len(dev, 1);
} else {
denali->platform = INTEL_MRST;
csr_base = pci_resource_start(dev, 0);
csr_len = pci_resource_len(dev, 0);
mem_base = pci_resource_start(dev, 1);
mem_len = pci_resource_len(dev, 1);
if (!mem_len) {
mem_base = csr_base + csr_len;
mem_len = csr_len;
}
}
pci_set_master(dev);
denali->dev = &dev->dev;
denali->irq = dev->irq;
ret = pci_request_regions(dev, DENALI_NAND_NAME);
if (ret) {
pr_err("Spectra: Unable to request memory regions\n");
goto failed_enable_dev;
}
denali->flash_reg = ioremap_nocache(csr_base, csr_len);
if (!denali->flash_reg) {
pr_err("Spectra: Unable to remap memory region\n");
ret = -ENOMEM;
goto failed_req_regions;
}
denali->flash_mem = ioremap_nocache(mem_base, mem_len);
if (!denali->flash_mem) {
pr_err("Spectra: ioremap_nocache failed!");
ret = -ENOMEM;
goto failed_remap_reg;
}
ret = denali_init(denali);
if (ret)
goto failed_remap_mem;
pci_set_drvdata(dev, denali);
return 0;
failed_remap_mem:
iounmap(denali->flash_mem);
failed_remap_reg:
iounmap(denali->flash_reg);
failed_req_regions:
pci_release_regions(dev);
failed_enable_dev:
pci_disable_device(dev);
failed_alloc_memery:
kfree(denali);
return ret;
}
/* driver exit point */
static void denali_pci_remove(struct pci_dev *dev)
{
struct denali_nand_info *denali = pci_get_drvdata(dev);
denali_remove(denali);
iounmap(denali->flash_reg);
iounmap(denali->flash_mem);
pci_release_regions(dev);
pci_disable_device(dev);
kfree(denali);
}
static struct pci_driver denali_pci_driver = {
.name = DENALI_NAND_NAME,
.id_table = denali_pci_ids,
.probe = denali_pci_probe,
.remove = denali_pci_remove,
};
module_pci_driver(denali_pci_driver);
|
