1 /*
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
45 const char * oakscsi_info (struct Scsi_Host *spnt)
46 {
47 return "";
48 }
49
50 #define STAT(p) inw(p + 144)
51 extern void inswb(int from, void *to, int len);
52
53 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr,
54 int len)
55 {
56 int iobase = instance->io_port;
57 printk("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
67 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr,
68 int len)
69 {
70 int iobase = instance->io_port;
71 printk("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
114 static Scsi_Host_Template oakscsi_template = {
115 .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,
121 .eh_device_reset_handler= NCR5380_device_reset,
122 .eh_bus_reset_handler = NCR5380_bus_reset,
123 .eh_host_reset_handler = NCR5380_host_reset,
124 .can_queue = 16,
125 .this_id = 7,
126 .sg_tablesize = SG_ALL,
127 .cmd_per_lun = 2,
128 .use_clustering = DISABLE_CLUSTERING,
129 .proc_name = "oakscsi",
130 };
131
132 static int __devinit
133 oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
134 {
135 struct Scsi_Host *host;
136 int ret = -ENOMEM;
137
138 host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata));
139 if (!host)
140 goto out;
141
142 host->io_port = ecard_address(ec, ECARD_MEMC, 0);
143 host->irq = IRQ_NONE;
144 host->n_io_port = 255;
145
146 ret = -EBUSY;
147 if (!request_region (host->io_port, host->n_io_port, "Oak SCSI"))
148 goto unreg;
149
150 NCR5380_init(host, 0);
151
152 printk("scsi%d: at port 0x%08lx irqs disabled",
153 host->host_no, host->io_port);
154 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
155 host->can_queue, host->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE);
156 printk("\nscsi%d:", host->host_no);
157 NCR5380_print_options(host);
158 printk("\n");
159
160 ret = scsi_add_host(host, &ec->dev);
161 if (ret)
162 goto out_release;
163
164 scsi_scan_host(host);
165 goto out;
166
167 out_release:
168 release_region(host->io_port, host->n_io_port);
169 unreg:
170 scsi_host_put(host);
171 out:
172 return ret;
173 }
174
175 static void __devexit oakscsi_remove(struct expansion_card *ec)
176 {
177 struct Scsi_Host *host = ecard_get_drvdata(ec);
178
179 ecard_set_drvdata(ec, NULL);
180 scsi_remove_host(host);
181
182 NCR5380_exit(host);
183 release_region(host->io_port, host->n_io_port);
184 scsi_host_put(host);
185 }
186
187 static const struct ecard_id oakscsi_cids[] = {
188 { MANU_OAK, PROD_OAK_SCSI },
189 { 0xffff, 0xffff }
190 };
191
192 static struct ecard_driver oakscsi_driver = {
193 .probe = oakscsi_probe,
194 .remove = __devexit_p(oakscsi_remove),
195 .id_table = oakscsi_cids,
196 .drv = {
197 .name = "oakscsi",
198 },
199 };
200
201 static int __init oakscsi_init(void)
202 {
203 return ecard_register_driver(&oakscsi_driver);
204 }
205
206 static void __exit oakscsi_exit(void)
207 {
208 ecard_remove_driver(&oakscsi_driver);
209 }
210
211 module_init(oakscsi_init);
212 module_exit(oakscsi_exit);
213
214 MODULE_AUTHOR("Russell King");
215 MODULE_DESCRIPTION("Oak SCSI driver");
216 MODULE_LICENSE("GPL");
217
218
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