cpufunc.h revision 201032 
1/*-
2 * Copyright (c) 1998 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/ia64/include/cpufunc.h 201032 2009-12-26 22:22:09Z marcel $
27 */
28
29#ifndef _MACHINE_CPUFUNC_H_
30#define _MACHINE_CPUFUNC_H_
31
32#ifdef _KERNEL
33
34#include <sys/types.h>
35#include <machine/ia64_cpu.h>
36#include <machine/vmparam.h>
37
38#ifndef _SYS_CDEFS_H_
39#error this file needs sys/cdefs.h as a prerequisite
40#endif
41
42struct thread;
43
44#define	IA64_FIXED_BREAK	0x84B5D
45
46#ifdef __GNUCLIKE_ASM
47
48static __inline void
49breakpoint(void)
50{
51	__asm __volatile("break.m %0" :: "i"(IA64_FIXED_BREAK));
52}
53
54#define	HAVE_INLINE_FFS
55#define	ffs(x)	__builtin_ffs(x)
56
57#define	__MEMIO_ADDR(x)		(void*)(IA64_PHYS_TO_RR6(x))
58extern void *ia64_ioport_address(u_int);
59#define	__PIO_ADDR(x)		ia64_ioport_address(x)
60
61/*
62 * I/O port reads with ia32 semantics.
63 */
64static __inline uint8_t
65inb(unsigned int port)
66{
67	uint8_t v;
68
69	ia64_mf();
70	v = ia64_ld1(__PIO_ADDR(port));
71	ia64_mf_a();
72	ia64_mf();
73	return (v);
74}
75
76static __inline uint16_t
77inw(unsigned int port)
78{
79	uint16_t v;
80
81	ia64_mf();
82	v = ia64_ld2(__PIO_ADDR(port));
83	ia64_mf_a();
84	ia64_mf();
85	return (v);
86}
87
88static __inline uint32_t
89inl(unsigned int port)
90{
91	uint32_t v;
92
93	ia64_mf();
94	v = ia64_ld4(__PIO_ADDR(port));
95	ia64_mf_a();
96	ia64_mf();
97	return (v);
98}
99
100static __inline void
101insb(unsigned int port, void *addr, size_t count)
102{
103	uint8_t *buf = addr;
104	while (count--)
105		*buf++ = inb(port);
106}
107
108static __inline void
109insw(unsigned int port, void *addr, size_t count)
110{
111	uint16_t *buf = addr;
112	while (count--)
113		*buf++ = inw(port);
114}
115
116static __inline void
117insl(unsigned int port, void *addr, size_t count)
118{
119	uint32_t *buf = addr;
120	while (count--)
121		*buf++ = inl(port);
122}
123
124static __inline void
125outb(unsigned int port, uint8_t data)
126{
127
128	ia64_mf();
129	ia64_st1(__PIO_ADDR(port), data);
130	ia64_mf_a();
131	ia64_mf();
132}
133
134static __inline void
135outw(unsigned int port, uint16_t data)
136{
137
138	ia64_mf();
139	ia64_st2(__PIO_ADDR(port), data);
140	ia64_mf_a();
141	ia64_mf();
142}
143
144static __inline void
145outl(unsigned int port, uint32_t data)
146{
147
148	ia64_mf();
149	ia64_st4(__PIO_ADDR(port), data);
150	ia64_mf_a();
151	ia64_mf();
152}
153
154static __inline void
155outsb(unsigned int port, const void *addr, size_t count)
156{
157	const uint8_t *buf = addr;
158	while (count--)
159		outb(port, *buf++);
160}
161
162static __inline void
163outsw(unsigned int port, const void *addr, size_t count)
164{
165	const uint16_t *buf = addr;
166	while (count--)
167		outw(port, *buf++);
168}
169
170static __inline void
171outsl(unsigned int port, const void *addr, size_t count)
172{
173	const uint32_t *buf = addr;
174	while (count--)
175		outl(port, *buf++);
176}
177
178static __inline void
179disable_intr(void)
180{
181	__asm __volatile ("rsm psr.i");
182}
183
184static __inline void
185enable_intr(void)
186{
187	__asm __volatile ("ssm psr.i;; srlz.d");
188}
189
190static __inline register_t
191intr_disable(void)
192{
193	register_t psr;
194	__asm __volatile ("mov %0=psr;;" : "=r"(psr));
195	disable_intr();
196	return ((psr & IA64_PSR_I) ? 1 : 0);
197}
198
199static __inline void
200intr_restore(register_t ie)
201{
202	if (ie)
203		enable_intr();
204}
205
206#endif /* __GNUCLIKE_ASM */
207
208#endif /* _KERNEL */
209
210#endif /* !_MACHINE_CPUFUNC_H_ */
211