blob: d806b024c3bda264126f0b679389c11c91a5a8d9 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Oak Generic NCR5380 driver
3 *
4 * Copyright 1995-2002, Russell King
5 */
6
7#include <linux/module.h>
8#include <linux/signal.h>
9#include <linux/sched.h>
10#include <linux/ioport.h>
11#include <linux/delay.h>
12#include <linux/blkdev.h>
13#include <linux/init.h>
14
15#include <asm/ecard.h>
16#include <asm/io.h>
17#include <asm/system.h>
18
19#include "../scsi.h"
20#include <scsi/scsi_host.h>
21
22#define AUTOSENSE
23/*#define PSEUDO_DMA*/
24
25#define OAKSCSI_PUBLIC_RELEASE 1
26
27#define NCR5380_read(reg) oakscsi_read(_instance, reg)
28#define NCR5380_write(reg, value) oakscsi_write(_instance, reg, value)
29#define NCR5380_intr oakscsi_intr
30#define NCR5380_queue_command oakscsi_queue_command
31#define NCR5380_proc_info oakscsi_proc_info
32
33#define NCR5380_implementation_fields int port, ctrl
34#define NCR5380_local_declare() struct Scsi_Host *_instance
35#define NCR5380_setup(instance) _instance = instance
36
37#define BOARD_NORMAL 0
38#define BOARD_NCR53C400 1
39
40#include "../NCR5380.h"
41
42#undef START_DMA_INITIATOR_RECEIVE_REG
43#define START_DMA_INITIATOR_RECEIVE_REG (7 + 128)
44
45const char * oakscsi_info (struct Scsi_Host *spnt)
46{
47 return "";
48}
49
50#define STAT(p) inw(p + 144)
51extern void inswb(int from, void *to, int len);
52
53static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr,
54 int len)
55{
56 int iobase = instance->io_port;
57printk("writing %p len %d\n",addr, len);
58 if(!len) return -1;
59
60 while(1)
61 {
62 int status;
63 while(((status = STAT(iobase)) & 0x100)==0);
64 }
65}
66
67static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr,
68 int len)
69{
70 int iobase = instance->io_port;
71printk("reading %p len %d\n", addr, len);
72 while(len > 0)
73 {
74 int status, timeout;
75 unsigned long b;
76
77 timeout = 0x01FFFFFF;
78
79 while(((status = STAT(iobase)) & 0x100)==0)
80 {
81 timeout--;
82 if(status & 0x200 || !timeout)
83 {
84 printk("status = %08X\n",status);
85 return 1;
86 }
87 }
88 if(len >= 128)
89 {
90 inswb(iobase + 136, addr, 128);
91 addr += 128;
92 len -= 128;
93 }
94 else
95 {
96 b = (unsigned long) inw(iobase + 136);
97 *addr ++ = b;
98 len -= 1;
99 if(len)
100 *addr ++ = b>>8;
101 len -= 1;
102 }
103 }
104 return 0;
105}
106
107#define oakscsi_read(instance,reg) (inb((instance)->io_port + (reg)))
108#define oakscsi_write(instance,reg,val) (outb((val), (instance)->io_port + (reg)))
109
110#undef STAT
111
112#include "../NCR5380.c"
113
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100114static struct scsi_host_template oakscsi_template = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 .module = THIS_MODULE,
116 .proc_info = oakscsi_proc_info,
117 .name = "Oak 16-bit SCSI",
118 .info = oakscsi_info,
119 .queuecommand = oakscsi_queue_command,
120 .eh_abort_handler = NCR5380_abort,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 .eh_bus_reset_handler = NCR5380_bus_reset,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 .can_queue = 16,
123 .this_id = 7,
124 .sg_tablesize = SG_ALL,
125 .cmd_per_lun = 2,
126 .use_clustering = DISABLE_CLUSTERING,
127 .proc_name = "oakscsi",
128};
129
130static int __devinit
131oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
132{
133 struct Scsi_Host *host;
134 int ret = -ENOMEM;
135
136 host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata));
137 if (!host)
138 goto out;
139
140 host->io_port = ecard_address(ec, ECARD_MEMC, 0);
141 host->irq = IRQ_NONE;
142 host->n_io_port = 255;
143
144 ret = -EBUSY;
145 if (!request_region (host->io_port, host->n_io_port, "Oak SCSI"))
146 goto unreg;
147
148 NCR5380_init(host, 0);
149
150 printk("scsi%d: at port 0x%08lx irqs disabled",
151 host->host_no, host->io_port);
152 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
153 host->can_queue, host->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE);
154 printk("\nscsi%d:", host->host_no);
155 NCR5380_print_options(host);
156 printk("\n");
157
158 ret = scsi_add_host(host, &ec->dev);
159 if (ret)
160 goto out_release;
161
162 scsi_scan_host(host);
163 goto out;
164
165 out_release:
166 release_region(host->io_port, host->n_io_port);
167 unreg:
168 scsi_host_put(host);
169 out:
170 return ret;
171}
172
173static void __devexit oakscsi_remove(struct expansion_card *ec)
174{
175 struct Scsi_Host *host = ecard_get_drvdata(ec);
176
177 ecard_set_drvdata(ec, NULL);
178 scsi_remove_host(host);
179
180 NCR5380_exit(host);
181 release_region(host->io_port, host->n_io_port);
182 scsi_host_put(host);
183}
184
185static const struct ecard_id oakscsi_cids[] = {
186 { MANU_OAK, PROD_OAK_SCSI },
187 { 0xffff, 0xffff }
188};
189
190static struct ecard_driver oakscsi_driver = {
191 .probe = oakscsi_probe,
192 .remove = __devexit_p(oakscsi_remove),
193 .id_table = oakscsi_cids,
194 .drv = {
195 .name = "oakscsi",
196 },
197};
198
199static int __init oakscsi_init(void)
200{
201 return ecard_register_driver(&oakscsi_driver);
202}
203
204static void __exit oakscsi_exit(void)
205{
206 ecard_remove_driver(&oakscsi_driver);
207}
208
209module_init(oakscsi_init);
210module_exit(oakscsi_exit);
211
212MODULE_AUTHOR("Russell King");
213MODULE_DESCRIPTION("Oak SCSI driver");
214MODULE_LICENSE("GPL");
215