summaryrefslogtreecommitdiffstats
path: root/include/asm-m68knommu/ide.h
blob: b1cbf8bb923244b40fc8804bd8f6cd663b0c4650 (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
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
/****************************************************************************/
/*
 *  linux/include/asm-m68knommu/ide.h
 *
 *  Copyright (C) 1994-1996  Linus Torvalds & authors
 *	Copyright (C) 2001       Lineo Inc., davidm@uclinux.org
 */
/****************************************************************************/
#ifndef _M68KNOMMU_IDE_H
#define _M68KNOMMU_IDE_H

#ifdef __KERNEL__
/****************************************************************************/

#include <linux/config.h>
#include <linux/interrupt.h>

#include <asm/setup.h>
#include <asm/io.h>
#include <asm/irq.h>

/****************************************************************************/
/*
 *	some coldfire specifics
 */

#ifdef CONFIG_COLDFIRE
#include <asm/coldfire.h>
#include <asm/mcfsim.h>

/*
 *	Save some space,  only have 1 interface
 */
#define MAX_HWIFS		  1	/* we only have one interface for now */

#ifdef CONFIG_SECUREEDGEMP3
#define	MCFSIM_LOCALCS	  MCFSIM_CSCR4
#else
#define	MCFSIM_LOCALCS	  MCFSIM_CSCR6
#endif

#endif /* CONFIG_COLDFIRE */

/****************************************************************************/
/*
 *	Fix up things that may not have been provided
 */

#ifndef MAX_HWIFS
#define MAX_HWIFS	4	/* same as the other archs */
#endif

#undef SUPPORT_SLOW_DATA_PORTS
#define SUPPORT_SLOW_DATA_PORTS 0

#undef SUPPORT_VLB_SYNC
#define SUPPORT_VLB_SYNC 0

/* this definition is used only on startup .. */
#undef HD_DATA
#define HD_DATA NULL

#define	DBGIDE(fmt,a...)
// #define	DBGIDE(fmt,a...) printk(fmt, ##a)
#define IDE_INLINE __inline__
// #define IDE_INLINE

/****************************************************************************/

typedef union {
	unsigned all			: 8;	/* all of the bits together */
	struct {
		unsigned bit7		: 1;	/* always 1 */
		unsigned lba		: 1;	/* using LBA instead of CHS */
		unsigned bit5		: 1;	/* always 1 */
		unsigned unit		: 1;	/* drive select number, 0 or 1 */
		unsigned head		: 4;	/* always zeros here */
	} b;
} select_t;

/*
 *	our list of ports/irq's for different boards
 */

static struct m68k_ide_defaults {
	ide_ioreg_t	base;
	int			irq;
} m68k_ide_defaults[MAX_HWIFS] = {
#if defined(CONFIG_SECUREEDGEMP3)
	{ ((ide_ioreg_t)0x30800000), 29 },
#elif defined(CONFIG_eLIA)
	{ ((ide_ioreg_t)0x30c00000), 29 },
#else
	{ ((ide_ioreg_t)0x0), 0 }
#endif
};

/****************************************************************************/

static IDE_INLINE int ide_default_irq(ide_ioreg_t base)
{
	int i;

	for (i = 0; i < MAX_HWIFS; i++)
		if (m68k_ide_defaults[i].base == base)
			return(m68k_ide_defaults[i].irq);
	return 0;
}

static IDE_INLINE ide_ioreg_t ide_default_io_base(int index)
{
	if (index >= 0 && index < MAX_HWIFS)
		return(m68k_ide_defaults[index].base);
	return 0;
}


/*
 * Set up a hw structure for a specified data port, control port and IRQ.
 * This should follow whatever the default interface uses.
 */
static IDE_INLINE void ide_init_hwif_ports(
	hw_regs_t *hw,
	ide_ioreg_t data_port,
	ide_ioreg_t ctrl_port,
	int *irq)
{
	ide_ioreg_t reg = data_port;
	int i;

	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
		hw->io_ports[i] = reg;
		reg += 1;
	}
	if (ctrl_port) {
		hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
	} else {
		hw->io_ports[IDE_CONTROL_OFFSET] = data_port + 0xe;
	}
}

#define ide_init_default_irq(base)	ide_default_irq(base)

static IDE_INLINE int
ide_request_irq(
	unsigned int irq,
	void (*handler)(int, void *, struct pt_regs *),
	unsigned long flags,
	const char *device,
	void *dev_id)
{
#ifdef CONFIG_COLDFIRE
	mcf_autovector(irq);
#endif
	return(request_irq(irq, handler, flags, device, dev_id));
}


static IDE_INLINE void
ide_free_irq(unsigned int irq, void *dev_id)
{
	free_irq(irq, dev_id);
}


static IDE_INLINE int
ide_check_region(ide_ioreg_t from, unsigned int extent)
{
	return 0;
}


static IDE_INLINE void
ide_request_region(ide_ioreg_t from, unsigned int extent, const char *name)
{
}


static IDE_INLINE void
ide_release_region(ide_ioreg_t from, unsigned int extent)
{
}


static IDE_INLINE void
ide_fix_driveid(struct hd_driveid *id)
{
#ifdef CONFIG_COLDFIRE
	int i, n;
	unsigned short *wp = (unsigned short *) id;
	int avoid[] = {49, 51, 52, 59, -1 }; /* do not swap these words */

	/* Need to byte swap shorts,  but not char fields */
	for (i = n = 0; i < sizeof(*id) / sizeof(*wp); i++, wp++) {
		if (avoid[n] == i) {
			n++;
			continue;
		}
		*wp = ((*wp & 0xff) << 8) | ((*wp >> 8) & 0xff);
	}
	/* have to word swap the one 32 bit field */
	id->lba_capacity = ((id->lba_capacity & 0xffff) << 16) |
				((id->lba_capacity >> 16) & 0xffff);
#endif
}


static IDE_INLINE void
ide_release_lock (int *ide_lock)
{
}


static IDE_INLINE void
ide_get_lock(
	int *ide_lock,
	void (*handler)(int, void *, struct pt_regs *),
	void *data)
{
}


#define ide_ack_intr(hwif) \
	((hwif)->hw.ack_intr ? (hwif)->hw.ack_intr(hwif) : 1)
#define	ide__sti()	__sti()

/****************************************************************************/
/*
 *	System specific IO requirements
 */

#ifdef CONFIG_COLDFIRE

#ifdef CONFIG_SECUREEDGEMP3

/* Replace standard IO functions for funky mapping of MP3 board */
#undef outb
#undef outb_p
#undef inb
#undef inb_p

#define outb(v, a)          ide_outb(v, (unsigned long) (a))
#define outb_p(v, a)        ide_outb(v, (unsigned long) (a))
#define inb(a)              ide_inb((unsigned long) (a))
#define inb_p(a)            ide_inb((unsigned long) (a))

#define ADDR8_PTR(addr)		(((addr) & 0x1) ? (0x8000 + (addr) - 1) : (addr))
#define ADDR16_PTR(addr)	(addr)
#define ADDR32_PTR(addr)	(addr)
#define SWAP8(w)			((((w) & 0xffff) << 8) | (((w) & 0xffff) >> 8))
#define SWAP16(w)			(w)
#define SWAP32(w)			(w)


static IDE_INLINE void
ide_outb(unsigned int val, unsigned int addr)
{
	volatile unsigned short	*rp;

	DBGIDE("%s(val=%x,addr=%x)\n", __FUNCTION__, val, addr);
	rp = (volatile unsigned short *) ADDR8_PTR(addr);
	*rp = SWAP8(val);
}


static IDE_INLINE int
ide_inb(unsigned int addr)
{
	volatile unsigned short	*rp, val;

	DBGIDE("%s(addr=%x)\n", __FUNCTION__, addr);
	rp = (volatile unsigned short *) ADDR8_PTR(addr);
	val = *rp;
	return(SWAP8(val));
}


static IDE_INLINE void
ide_outw(unsigned int val, unsigned int addr)
{
	volatile unsigned short	*rp;

	DBGIDE("%s(val=%x,addr=%x)\n", __FUNCTION__, val, addr);
	rp = (volatile unsigned short *) ADDR16_PTR(addr);
	*rp = SWAP16(val);
}

static IDE_INLINE void
ide_outsw(unsigned int addr, const void *vbuf, unsigned long len)
{
	volatile unsigned short	*rp, val;
	unsigned short   	*buf;

	DBGIDE("%s(addr=%x,vbuf=%p,len=%x)\n", __FUNCTION__, addr, vbuf, len);
	buf = (unsigned short *) vbuf;
	rp = (volatile unsigned short *) ADDR16_PTR(addr);
	for (; (len > 0); len--) {
		val = *buf++;
		*rp = SWAP16(val);
	}
}

static IDE_INLINE int
ide_inw(unsigned int addr)
{
	volatile unsigned short *rp, val;

	DBGIDE("%s(addr=%x)\n", __FUNCTION__, addr);
	rp = (volatile unsigned short *) ADDR16_PTR(addr);
	val = *rp;
	return(SWAP16(val));
}

static IDE_INLINE void
ide_insw(unsigned int addr, void *vbuf, unsigned long len)
{
	volatile unsigned short *rp;
	unsigned short          w, *buf;

	DBGIDE("%s(addr=%x,vbuf=%p,len=%x)\n", __FUNCTION__, addr, vbuf, len);
	buf = (unsigned short *) vbuf;
	rp = (volatile unsigned short *) ADDR16_PTR(addr);
	for (; (len > 0); len--) {
		w = *rp;
		*buf++ = SWAP16(w);
	}
}

static IDE_INLINE void
ide_insl(unsigned int addr, void *vbuf, unsigned long len)
{
	volatile unsigned long *rp;
	unsigned long          w, *buf;

	DBGIDE("%s(addr=%x,vbuf=%p,len=%x)\n", __FUNCTION__, addr, vbuf, len);
	buf = (unsigned long *) vbuf;
	rp = (volatile unsigned long *) ADDR32_PTR(addr);
	for (; (len > 0); len--) {
		w = *rp;
		*buf++ = SWAP32(w);
	}
}

static IDE_INLINE void
ide_outsl(unsigned int addr, const void *vbuf, unsigned long len)
{
	volatile unsigned long	*rp, val;
	unsigned long   	*buf;

	DBGIDE("%s(addr=%x,vbuf=%p,len=%x)\n", __FUNCTION__, addr, vbuf, len);
	buf = (unsigned long *) vbuf;
	rp = (volatile unsigned long *) ADDR32_PTR(addr);
	for (; (len > 0); len--) {
		val = *buf++;
		*rp = SWAP32(val);
	}
}

#elif CONFIG_eLIA

/* 8/16 bit acesses are controlled by flicking bits in the CS register */
#define	ACCESS_MODE_16BIT()	\
	*((volatile unsigned short *) (MCF_MBAR + MCFSIM_LOCALCS)) = 0x0080
#define	ACCESS_MODE_8BIT()	\
	*((volatile unsigned short *) (MCF_MBAR + MCFSIM_LOCALCS)) = 0x0040


static IDE_INLINE void
ide_outw(unsigned int val, unsigned int addr)
{
	ACCESS_MODE_16BIT();
	outw(val, addr);
	ACCESS_MODE_8BIT();
}

static IDE_INLINE void
ide_outsw(unsigned int addr, const void *vbuf, unsigned long len)
{
	ACCESS_MODE_16BIT();
	outsw(addr, vbuf, len);
	ACCESS_MODE_8BIT();
}

static IDE_INLINE int
ide_inw(unsigned int addr)
{
	int ret;

	ACCESS_MODE_16BIT();
	ret = inw(addr);
	ACCESS_MODE_8BIT();
	return(ret);
}

static IDE_INLINE void
ide_insw(unsigned int addr, void *vbuf, unsigned long len)
{
	ACCESS_MODE_16BIT();
	insw(addr, vbuf, len);
	ACCESS_MODE_8BIT();
}

static IDE_INLINE void
ide_insl(unsigned int addr, void *vbuf, unsigned long len)
{
	ACCESS_MODE_16BIT();
	insl(addr, vbuf, len);
	ACCESS_MODE_8BIT();
}

static IDE_INLINE void
ide_outsl(unsigned int addr, const void *vbuf, unsigned long len)
{
	ACCESS_MODE_16BIT();
	outsl(addr, vbuf, len);
	ACCESS_MODE_8BIT();
}

#endif /* CONFIG_SECUREEDGEMP3 */

#undef outw
#undef outw_p
#undef outsw
#undef inw
#undef inw_p
#undef insw
#undef insl
#undef outsl

#define	outw(v, a)	     ide_outw(v, (unsigned long) (a))
#define	outw_p(v, a)     ide_outw(v, (unsigned long) (a))
#define outsw(a, b, n)   ide_outsw((unsigned long) (a), b, n)
#define	inw(a)	         ide_inw((unsigned long) (a))
#define	inw_p(a)	     ide_inw((unsigned long) (a))
#define insw(a, b, n)    ide_insw((unsigned long) (a), b, n)
#define insl(a, b, n)    ide_insl((unsigned long) (a), b, n)
#define outsl(a, b, n)   ide_outsl((unsigned long) (a), b, n)

#endif CONFIG_COLDFIRE

/****************************************************************************/
#endif /* __KERNEL__ */
#endif /* _M68KNOMMU_IDE_H */
/****************************************************************************/