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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/*
* Oak Generic NCR5380 driver
*
* Copyright 1995-2002, Russell King
*/
#include <linux/module.h>
#include <linux/signal.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/blkdev.h>
#include <linux/init.h>
#include <asm/ecard.h>
#include <asm/io.h>
#include <asm/system.h>
#include "../scsi.h"
#include <scsi/scsi_host.h>
#define AUTOSENSE
/*#define PSEUDO_DMA*/
#define OAKSCSI_PUBLIC_RELEASE 1
#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
#define NCR5380_local_declare() void __iomem *_base
#define NCR5380_setup(host) _base = priv(host)->base
#define NCR5380_read(reg) readb(_base + ((reg) << 2))
#define NCR5380_write(reg, value) writeb(value, _base + ((reg) << 2))
#define NCR5380_intr oakscsi_intr
#define NCR5380_queue_command oakscsi_queue_command
#define NCR5380_proc_info oakscsi_proc_info
#define NCR5380_implementation_fields \
void __iomem *base
#define BOARD_NORMAL 0
#define BOARD_NCR53C400 1
#include "../NCR5380.h"
#undef START_DMA_INITIATOR_RECEIVE_REG
#define START_DMA_INITIATOR_RECEIVE_REG (128 + 7)
const char * oakscsi_info (struct Scsi_Host *spnt)
{
return "";
}
#define STAT ((128 + 16) << 2)
#define DATA ((128 + 8) << 2)
static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr,
int len)
{
void __iomem *base = priv(instance)->base;
printk("writing %p len %d\n",addr, len);
if(!len) return -1;
while(1)
{
int status;
while (((status = readw(base + STAT)) & 0x100)==0);
}
}
static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr,
int len)
{
void __iomem *base = priv(instance)->base;
printk("reading %p len %d\n", addr, len);
while(len > 0)
{
unsigned int status, timeout;
unsigned long b;
timeout = 0x01FFFFFF;
while (((status = readw(base + STAT)) & 0x100)==0)
{
timeout--;
if(status & 0x200 || !timeout)
{
printk("status = %08X\n", status);
return 1;
}
}
if(len >= 128)
{
readsw(base + DATA, addr, 128);
addr += 128;
len -= 128;
}
else
{
b = (unsigned long) readw(base + DATA);
*addr ++ = b;
len -= 1;
if(len)
*addr ++ = b>>8;
len -= 1;
}
}
return 0;
}
#undef STAT
#undef DATA
#include "../NCR5380.c"
static struct scsi_host_template oakscsi_template = {
.module = THIS_MODULE,
.proc_info = oakscsi_proc_info,
.name = "Oak 16-bit SCSI",
.info = oakscsi_info,
.queuecommand = oakscsi_queue_command,
.eh_abort_handler = NCR5380_abort,
.eh_bus_reset_handler = NCR5380_bus_reset,
.can_queue = 16,
.this_id = 7,
.sg_tablesize = SG_ALL,
.cmd_per_lun = 2,
.use_clustering = DISABLE_CLUSTERING,
.proc_name = "oakscsi",
};
static int __devinit
oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
{
struct Scsi_Host *host;
int ret = -ENOMEM;
ret = ecard_request_resources(ec);
if (ret)
goto out;
host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata));
if (!host) {
ret = -ENOMEM;
goto release;
}
priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
ecard_resource_len(ec, ECARD_RES_MEMC));
if (!priv(host)->base) {
ret = -ENOMEM;
goto unreg;
}
host->irq = IRQ_NONE;
host->n_io_port = 255;
NCR5380_init(host, 0);
printk("scsi%d: at port 0x%08lx irqs disabled",
host->host_no, host->io_port);
printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
host->can_queue, host->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE);
printk("\nscsi%d:", host->host_no);
NCR5380_print_options(host);
printk("\n");
ret = scsi_add_host(host, &ec->dev);
if (ret)
goto out_unmap;
scsi_scan_host(host);
goto out;
out_unmap:
iounmap(priv(host)->base);
unreg:
scsi_host_put(host);
release:
ecard_release_resources(ec);
out:
return ret;
}
static void __devexit oakscsi_remove(struct expansion_card *ec)
{
struct Scsi_Host *host = ecard_get_drvdata(ec);
ecard_set_drvdata(ec, NULL);
scsi_remove_host(host);
NCR5380_exit(host);
iounmap(priv(host)->base);
scsi_host_put(host);
ecard_release_resources(ec);
}
static const struct ecard_id oakscsi_cids[] = {
{ MANU_OAK, PROD_OAK_SCSI },
{ 0xffff, 0xffff }
};
static struct ecard_driver oakscsi_driver = {
.probe = oakscsi_probe,
.remove = __devexit_p(oakscsi_remove),
.id_table = oakscsi_cids,
.drv = {
.name = "oakscsi",
},
};
static int __init oakscsi_init(void)
{
return ecard_register_driver(&oakscsi_driver);
}
static void __exit oakscsi_exit(void)
{
ecard_remove_driver(&oakscsi_driver);
}
module_init(oakscsi_init);
module_exit(oakscsi_exit);
MODULE_AUTHOR("Russell King");
MODULE_DESCRIPTION("Oak SCSI driver");
MODULE_LICENSE("GPL");
|
