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1da177e4 LT |
1 | /* $Id: ide.h,v 1.7 2002/01/16 20:58:40 davem 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 | ||
1da177e4 LT |
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 | ||
35 | static __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 | ||
66 | static __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 */ |