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
|
/*
* Copyright (C) 2006 Red Hat <alan@redhat.com>
*
* May be copied or modified under the terms of the GNU General Public License
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/init.h>
#define DRV_NAME "jmicron"
typedef enum {
PORT_PATA0 = 0,
PORT_PATA1 = 1,
PORT_SATA = 2,
} port_type;
/**
* jmicron_cable_detect - cable detection
* @hwif: IDE port
*
* Returns the cable type.
*/
static u8 jmicron_cable_detect(ide_hwif_t *hwif)
{
struct pci_dev *pdev = to_pci_dev(hwif->dev);
u32 control;
u32 control5;
int port = hwif->channel;
port_type port_map[2];
pci_read_config_dword(pdev, 0x40, &control);
/* There are two basic mappings. One has the two SATA ports merged
as master/slave and the secondary as PATA, the other has only the
SATA port mapped */
if (control & (1 << 23)) {
port_map[0] = PORT_SATA;
port_map[1] = PORT_PATA0;
} else {
port_map[0] = PORT_SATA;
port_map[1] = PORT_SATA;
}
/* The 365/366 may have this bit set to map the second PATA port
as the internal primary channel */
pci_read_config_dword(pdev, 0x80, &control5);
if (control5 & (1<<24))
port_map[0] = PORT_PATA1;
/* The two ports may then be logically swapped by the firmware */
if (control & (1 << 22))
port = port ^ 1;
/*
* Now we know which physical port we are talking about we can
* actually do our cable checking etc. Thankfully we don't need
* to do the plumbing for other cases.
*/
switch (port_map[port]) {
case PORT_PATA0:
if (control & (1 << 3)) /* 40/80 pin primary */
return ATA_CBL_PATA40;
return ATA_CBL_PATA80;
case PORT_PATA1:
if (control5 & (1 << 19)) /* 40/80 pin secondary */
return ATA_CBL_PATA40;
return ATA_CBL_PATA80;
case PORT_SATA:
break;
}
/* Avoid bogus "control reaches end of non-void function" */
return ATA_CBL_PATA80;
}
static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
}
/**
* jmicron_set_dma_mode - set host controller for DMA mode
* @drive: drive
* @mode: DMA mode
*
* As the JMicron snoops for timings we don't need to do anything here.
*/
static void jmicron_set_dma_mode(ide_drive_t *drive, const u8 mode)
{
}
static const struct ide_port_ops jmicron_port_ops = {
.set_pio_mode = jmicron_set_pio_mode,
.set_dma_mode = jmicron_set_dma_mode,
.cable_detect = jmicron_cable_detect,
};
static const struct ide_port_info jmicron_chipset __devinitdata = {
.name = DRV_NAME,
.enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
.port_ops = &jmicron_port_ops,
.pio_mask = ATA_PIO5,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
};
/**
* jmicron_init_one - pci layer discovery entry
* @dev: PCI device
* @id: ident table entry
*
* Called by the PCI code when it finds a Jmicron controller.
* We then use the IDE PCI generic helper to do most of the work.
*/
static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
return ide_pci_init_one(dev, &jmicron_chipset, NULL);
}
/* All JMB PATA controllers have and will continue to have the same
* interface. Matching vendor and device class is enough for all
* current and future controllers if the controller is programmed
* properly.
*
* If libata is configured, jmicron PCI quirk programs the controller
* into the correct mode. If libata isn't configured, match known
* device IDs too to maintain backward compatibility.
*/
static struct pci_device_id jmicron_pci_tbl[] = {
#if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE)
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) },
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) },
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) },
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) },
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) },
#endif
{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
static struct pci_driver driver = {
.name = "JMicron IDE",
.id_table = jmicron_pci_tbl,
.probe = jmicron_init_one,
.remove = ide_pci_remove,
};
static int __init jmicron_ide_init(void)
{
return ide_pci_register_driver(&driver);
}
static void __exit jmicron_ide_exit(void)
{
pci_unregister_driver(&driver);
}
module_init(jmicron_ide_init);
module_exit(jmicron_ide_exit);
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes");
MODULE_LICENSE("GPL");
|
