1/* $Id: ide.h,v 1.1.1.1 2007/08/03 18:53:36 Exp $
2 * ide.h: SPARC PCI specific IDE glue.
3 *
4 * Copyright (C) 1997  David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1998  Eddie C. Dost   (ecd@skynet.be)
6 * Adaptation from sparc64 version to sparc by Pete Zaitcev.
7 */
8
9#ifndef _SPARC_IDE_H
10#define _SPARC_IDE_H
11
12#ifdef __KERNEL__
13
14#include <asm/pgtable.h>
15#include <asm/io.h>
16#include <asm/psr.h>
17
18#undef  MAX_HWIFS
19#define MAX_HWIFS	2
20
21#define IDE_ARCH_OBSOLETE_INIT
22#define ide_default_io_ctl(base)	((base) + 0x206) /* obsolete */
23
24#define __ide_insl(data_reg, buffer, wcount) \
25	__ide_insw(data_reg, buffer, (wcount)<<1)
26#define __ide_outsl(data_reg, buffer, wcount) \
27	__ide_outsw(data_reg, buffer, (wcount)<<1)
28
29/* On sparc, I/O ports and MMIO registers are accessed identically.  */
30#define __ide_mm_insw	__ide_insw
31#define __ide_mm_insl	__ide_insl
32#define __ide_mm_outsw	__ide_outsw
33#define __ide_mm_outsl	__ide_outsl
34
35static __inline__ void __ide_insw(unsigned long port,
36				  void *dst,
37				  unsigned long count)
38{
39	volatile unsigned short *data_port;
40	/* unsigned long end = (unsigned long)dst + (count << 1); */ /* P3 */
41	u16 *ps = dst;
42	u32 *pi;
43
44	data_port = (volatile unsigned short *)port;
45
46	if(((unsigned long)ps) & 0x2) {
47		*ps++ = *data_port;
48		count--;
49	}
50	pi = (u32 *)ps;
51	while(count >= 2) {
52		u32 w;
53
54		w  = (*data_port) << 16;
55		w |= (*data_port);
56		*pi++ = w;
57		count -= 2;
58	}
59	ps = (u16 *)pi;
60	if(count)
61		*ps++ = *data_port;
62
63	/* __flush_dcache_range((unsigned long)dst, end); */ /* P3 see hme */
64}
65
66static __inline__ void __ide_outsw(unsigned long port,
67				   const void *src,
68				   unsigned long count)
69{
70	volatile unsigned short *data_port;
71	/* unsigned long end = (unsigned long)src + (count << 1); */
72	const u16 *ps = src;
73	const u32 *pi;
74
75	data_port = (volatile unsigned short *)port;
76
77	if(((unsigned long)src) & 0x2) {
78		*data_port = *ps++;
79		count--;
80	}
81	pi = (const u32 *)ps;
82	while(count >= 2) {
83		u32 w;
84
85		w = *pi++;
86		*data_port = (w >> 16);
87		*data_port = w;
88		count -= 2;
89	}
90	ps = (const u16 *)pi;
91	if(count)
92		*data_port = *ps;
93
94	/* __flush_dcache_range((unsigned long)src, end); */ /* P3 see hme */
95}
96
97#endif /* __KERNEL__ */
98
99#endif /* _SPARC_IDE_H */
100