aboutsummaryrefslogtreecommitdiff
path: root/drivers/scsi/arm/cumana_1.c
blob: cf9a21cea6d9309b88aa4cb69b2d2addc53aa7a1 (plain)
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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
/*
 * Generic 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>

#include <scsi/scsicam.h>

#define AUTOSENSE
#define PSEUDO_DMA

#define CUMANASCSI_PUBLIC_RELEASE 1

#define NCR5380_implementation_fields	int port, ctrl
#define NCR5380_local_declare()		struct Scsi_Host *_instance
#define NCR5380_setup(instance)		_instance = instance
#define NCR5380_read(reg)		cumanascsi_read(_instance, reg)
#define NCR5380_write(reg, value)	cumanascsi_write(_instance, reg, value)
#define NCR5380_intr			cumanascsi_intr
#define NCR5380_queue_command		cumanascsi_queue_command
#define NCR5380_proc_info		cumanascsi_proc_info

#define BOARD_NORMAL	0
#define BOARD_NCR53C400	1

#include "../NCR5380.h"

void cumanascsi_setup(char *str, int *ints)
{
}

const char *cumanascsi_info(struct Scsi_Host *spnt)
{
	return "";
}

#ifdef NOT_EFFICIENT
#define CTRL(p,v)     outb(*ctrl = (v), (p) - 577)
#define STAT(p)       inb((p)+1)
#define IN(p)         inb((p))
#define OUT(v,p)      outb((v), (p))
#else
#define CTRL(p,v)	(p[-2308] = (*ctrl = (v)))
#define STAT(p)		(p[4])
#define IN(p)		(*(p))
#define IN2(p)		((unsigned short)(*(volatile unsigned long *)(p)))
#define OUT(v,p)	(*(p) = (v))
#define OUT2(v,p)	(*((volatile unsigned long *)(p)) = (v))
#endif
#define L(v)		(((v)<<16)|((v) & 0x0000ffff))
#define H(v)		(((v)>>16)|((v) & 0xffff0000))

static inline int
NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, int len)
{
  int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
  int oldctrl = *ctrl;
  unsigned long *laddr;
#ifdef NOT_EFFICIENT
  int iobase = instance->io_port;
  int dma_io = iobase & ~(0x3C0000>>2);
#else
  volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
  volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
#endif

  if(!len) return 0;

  CTRL(iobase, 0x02);
  laddr = (unsigned long *)addr;
  while(len >= 32)
  {
    int status;
    unsigned long v;
    status = STAT(iobase);
    if(status & 0x80)
      goto end;
    if(!(status & 0x40))
      continue;
    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
    v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
    len -= 32;
    if(len == 0)
      break;
  }

  addr = (unsigned char *)laddr;
  CTRL(iobase, 0x12);
  while(len > 0)
  {
    int status;
    status = STAT(iobase);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      OUT(*addr++, dma_io);
      if(--len == 0)
        break;
    }

    status = STAT(iobase);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      OUT(*addr++, dma_io);
      if(--len == 0)
        break;
    }
  }
end:
  CTRL(iobase, oldctrl|0x40);
  return len;
}

static inline int
NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, int len)
{
  int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
  int oldctrl = *ctrl;
  unsigned long *laddr;
#ifdef NOT_EFFICIENT
  int iobase = instance->io_port;
  int dma_io = iobase & ~(0x3C0000>>2);
#else
  volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
  volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
#endif

  if(!len) return 0;

  CTRL(iobase, 0x00);
  laddr = (unsigned long *)addr;
  while(len >= 32)
  {
    int status;
    status = STAT(iobase);
    if(status & 0x80)
      goto end;
    if(!(status & 0x40))
      continue;
    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
    *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
    len -= 32;
    if(len == 0)
      break;
  }

  addr = (unsigned char *)laddr;
  CTRL(iobase, 0x10);
  while(len > 0)
  {
    int status;
    status = STAT(iobase);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      *addr++ = IN(dma_io);
      if(--len == 0)
        break;
    }

    status = STAT(iobase);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      *addr++ = IN(dma_io);
      if(--len == 0)
        break;
    }
  }
end:
  CTRL(iobase, oldctrl|0x40);
  return len;
}

#undef STAT
#undef CTRL
#undef IN
#undef OUT

#define CTRL(p,v) outb(*ctrl = (v), (p) - 577)

static char cumanascsi_read(struct Scsi_Host *instance, int reg)
{
	unsigned int iobase = instance->io_port;
	int i;
	int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;

	CTRL(iobase, 0);
	i = inb(iobase + 64 + reg);
	CTRL(iobase, 0x40);

	return i;
}

static void cumanascsi_write(struct Scsi_Host *instance, int reg, int value)
{
	int iobase = instance->io_port;
	int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;

	CTRL(iobase, 0);
	outb(value, iobase + 64 + reg);
	CTRL(iobase, 0x40);
}

#undef CTRL

#include "../NCR5380.c"

static struct scsi_host_template cumanascsi_template = {
	.module			= THIS_MODULE,
	.name			= "Cumana 16-bit SCSI",
	.info			= cumanascsi_info,
	.queuecommand		= cumanascsi_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,
	.unchecked_isa_dma	= 0,
	.use_clustering		= DISABLE_CLUSTERING,
	.proc_name		= "CumanaSCSI-1",
};

static int __devinit
cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id)
{
	struct Scsi_Host *host;
	int ret = -ENOMEM;

	host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
	if (!host)
		goto out;

        host->io_port = ecard_address(ec, ECARD_IOC, ECARD_SLOW) + 0x800;
	host->irq = ec->irq;

	NCR5380_init(host, 0);

	host->n_io_port = 255;
	if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
		ret = -EBUSY;
		goto out_free;
	}

        ((struct NCR5380_hostdata *)host->hostdata)->ctrl = 0;
        outb(0x00, host->io_port - 577);

	ret = request_irq(host->irq, cumanascsi_intr, IRQF_DISABLED,
			  "CumanaSCSI-1", host);
	if (ret) {
		printk("scsi%d: IRQ%d not free: %d\n",
		    host->host_no, host->irq, ret);
		goto out_release;
	}

	printk("scsi%d: at port 0x%08lx irq %d",
		host->host_no, host->io_port, host->irq);
	printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
		host->can_queue, host->cmd_per_lun, CUMANASCSI_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_free_irq;

	scsi_scan_host(host);
	goto out;

 out_free_irq:
	free_irq(host->irq, host);
 out_release:
	release_region(host->io_port, host->n_io_port);
 out_free:
	scsi_host_put(host);
 out:
	return ret;
}

static void __devexit cumanascsi1_remove(struct expansion_card *ec)
{
	struct Scsi_Host *host = ecard_get_drvdata(ec);

	ecard_set_drvdata(ec, NULL);

	scsi_remove_host(host);
	free_irq(host->irq, host);
	NCR5380_exit(host);
	release_region(host->io_port, host->n_io_port);
	scsi_host_put(host);
}

static const struct ecard_id cumanascsi1_cids[] = {
	{ MANU_CUMANA, PROD_CUMANA_SCSI_1 },
	{ 0xffff, 0xffff }
};

static struct ecard_driver cumanascsi1_driver = {
	.probe		= cumanascsi1_probe,
	.remove		= __devexit_p(cumanascsi1_remove),
	.id_table	= cumanascsi1_cids,
	.drv = {
		.name		= "cumanascsi1",
	},
};

static int __init cumanascsi_init(void)
{
	return ecard_register_driver(&cumanascsi1_driver);
}

static void __exit cumanascsi_exit(void)
{
	ecard_remove_driver(&cumanascsi1_driver);
}

module_init(cumanascsi_init);
module_exit(cumanascsi_exit);

MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
MODULE_LICENSE("GPL");