1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /* ide.h: SPARC PCI specific IDE glue.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (C) 1997 David S. Miller (davem@davemloft.net)
5*4882a593Smuzhiyun * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
6*4882a593Smuzhiyun * Adaptation from sparc64 version to sparc by Pete Zaitcev.
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #ifndef _SPARC_IDE_H
10*4882a593Smuzhiyun #define _SPARC_IDE_H
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #ifdef __KERNEL__
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <asm/io.h>
15*4882a593Smuzhiyun #ifdef CONFIG_SPARC64
16*4882a593Smuzhiyun #include <asm/spitfire.h>
17*4882a593Smuzhiyun #include <asm/cacheflush.h>
18*4882a593Smuzhiyun #include <asm/page.h>
19*4882a593Smuzhiyun #else
20*4882a593Smuzhiyun #include <linux/pgtable.h>
21*4882a593Smuzhiyun #include <asm/psr.h>
22*4882a593Smuzhiyun #endif
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun #define __ide_insl(data_reg, buffer, wcount) \
25*4882a593Smuzhiyun __ide_insw(data_reg, buffer, (wcount)<<1)
26*4882a593Smuzhiyun #define __ide_outsl(data_reg, buffer, wcount) \
27*4882a593Smuzhiyun __ide_outsw(data_reg, buffer, (wcount)<<1)
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun /* On sparc, I/O ports and MMIO registers are accessed identically. */
30*4882a593Smuzhiyun #define __ide_mm_insw __ide_insw
31*4882a593Smuzhiyun #define __ide_mm_insl __ide_insl
32*4882a593Smuzhiyun #define __ide_mm_outsw __ide_outsw
33*4882a593Smuzhiyun #define __ide_mm_outsl __ide_outsl
34*4882a593Smuzhiyun
__ide_insw(void __iomem * port,void * dst,u32 count)35*4882a593Smuzhiyun static inline void __ide_insw(void __iomem *port, void *dst, u32 count)
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun #if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE)
38*4882a593Smuzhiyun unsigned long end = (unsigned long)dst + (count << 1);
39*4882a593Smuzhiyun #endif
40*4882a593Smuzhiyun u16 *ps = dst;
41*4882a593Smuzhiyun u32 *pi;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun if(((unsigned long)ps) & 0x2) {
44*4882a593Smuzhiyun *ps++ = __raw_readw(port);
45*4882a593Smuzhiyun count--;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun pi = (u32 *)ps;
48*4882a593Smuzhiyun while(count >= 2) {
49*4882a593Smuzhiyun u32 w;
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun w = __raw_readw(port) << 16;
52*4882a593Smuzhiyun w |= __raw_readw(port);
53*4882a593Smuzhiyun *pi++ = w;
54*4882a593Smuzhiyun count -= 2;
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun ps = (u16 *)pi;
57*4882a593Smuzhiyun if(count)
58*4882a593Smuzhiyun *ps++ = __raw_readw(port);
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun #if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE)
61*4882a593Smuzhiyun __flush_dcache_range((unsigned long)dst, end);
62*4882a593Smuzhiyun #endif
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun
__ide_outsw(void __iomem * port,const void * src,u32 count)65*4882a593Smuzhiyun static inline void __ide_outsw(void __iomem *port, const void *src, u32 count)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun #if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE)
68*4882a593Smuzhiyun unsigned long end = (unsigned long)src + (count << 1);
69*4882a593Smuzhiyun #endif
70*4882a593Smuzhiyun const u16 *ps = src;
71*4882a593Smuzhiyun const u32 *pi;
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun if(((unsigned long)src) & 0x2) {
74*4882a593Smuzhiyun __raw_writew(*ps++, port);
75*4882a593Smuzhiyun count--;
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun pi = (const u32 *)ps;
78*4882a593Smuzhiyun while(count >= 2) {
79*4882a593Smuzhiyun u32 w;
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun w = *pi++;
82*4882a593Smuzhiyun __raw_writew((w >> 16), port);
83*4882a593Smuzhiyun __raw_writew(w, port);
84*4882a593Smuzhiyun count -= 2;
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun ps = (const u16 *)pi;
87*4882a593Smuzhiyun if(count)
88*4882a593Smuzhiyun __raw_writew(*ps, port);
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun #if defined(CONFIG_SPARC64) && defined(DCACHE_ALIASING_POSSIBLE)
91*4882a593Smuzhiyun __flush_dcache_range((unsigned long)src, end);
92*4882a593Smuzhiyun #endif
93*4882a593Smuzhiyun }
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun #endif /* __KERNEL__ */
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun #endif /* _SPARC_IDE_H */
98