tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* $Id: ide.h,v 1.21 2001/09/25 20:21:48 kanoj Exp $
2 * ide.h: Ultra/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 */
7
8#ifndef _SPARC64_IDE_H
9#define _SPARC64_IDE_H
10
11#ifdef __KERNEL__
12
13#include <asm/pgalloc.h>
14#include <asm/io.h>
15#include <asm/spitfire.h>
16#include <asm/cacheflush.h>
17#include <asm/page.h>
18
19#ifndef MAX_HWIFS
20# ifdef CONFIG_BLK_DEV_IDEPCI
21#define MAX_HWIFS 10
22# else
23#define MAX_HWIFS 2
24# endif
25#endif
26
27#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */
28
29#define __ide_insl(data_reg, buffer, wcount) \
30 __ide_insw(data_reg, buffer, (wcount)<<1)
31#define __ide_outsl(data_reg, buffer, wcount) \
32 __ide_outsw(data_reg, buffer, (wcount)<<1)
33
34/* On sparc64, I/O ports and MMIO registers are accessed identically. */
35#define __ide_mm_insw __ide_insw
36#define __ide_mm_insl __ide_insl
37#define __ide_mm_outsw __ide_outsw
38#define __ide_mm_outsl __ide_outsl
39
40static inline unsigned int inw_be(void __iomem *addr)
41{
42 unsigned int ret;
43
44 __asm__ __volatile__("lduha [%1] %2, %0"
45 : "=r" (ret)
46 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
47
48 return ret;
49}
50
51static inline void __ide_insw(void __iomem *port, void *dst, u32 count)
52{
53#ifdef DCACHE_ALIASING_POSSIBLE
54 unsigned long end = (unsigned long)dst + (count << 1);
55#endif
56 u16 *ps = dst;
57 u32 *pi;
58
59 if(((u64)ps) & 0x2) {
60 *ps++ = inw_be(port);
61 count--;
62 }
63 pi = (u32 *)ps;
64 while(count >= 2) {
65 u32 w;
66
67 w = inw_be(port) << 16;
68 w |= inw_be(port);
69 *pi++ = w;
70 count -= 2;
71 }
72 ps = (u16 *)pi;
73 if(count)
74 *ps++ = inw_be(port);
75
76#ifdef DCACHE_ALIASING_POSSIBLE
77 __flush_dcache_range((unsigned long)dst, end);
78#endif
79}
80
81static inline void outw_be(unsigned short w, void __iomem *addr)
82{
83 __asm__ __volatile__("stha %0, [%1] %2"
84 : /* no outputs */
85 : "r" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
86}
87
88static inline void __ide_outsw(void __iomem *port, void *src, u32 count)
89{
90#ifdef DCACHE_ALIASING_POSSIBLE
91 unsigned long end = (unsigned long)src + (count << 1);
92#endif
93 const u16 *ps = src;
94 const u32 *pi;
95
96 if(((u64)src) & 0x2) {
97 outw_be(*ps++, port);
98 count--;
99 }
100 pi = (const u32 *)ps;
101 while(count >= 2) {
102 u32 w;
103
104 w = *pi++;
105 outw_be((w >> 16), port);
106 outw_be(w, port);
107 count -= 2;
108 }
109 ps = (const u16 *)pi;
110 if(count)
111 outw_be(*ps, port);
112
113#ifdef DCACHE_ALIASING_POSSIBLE
114 __flush_dcache_range((unsigned long)src, end);
115#endif
116}
117
118#endif /* __KERNEL__ */
119
120#endif /* _SPARC64_IDE_H */