[people/ms/u-boot.git] / arch / m68k / include / asm / io.h

/*
 * IO header file
 *
 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#ifndef __ASM_M68K_IO_H__
#define __ASM_M68K_IO_H__

#include <asm/byteorder.h>

#ifndef _IO_BASE
#define _IO_BASE 0
#endif

#define __raw_readb(addr) (*(volatile u8 *)(addr))
#define __raw_readw(addr) (*(volatile u16 *)(addr))
#define __raw_readl(addr) (*(volatile u32 *)(addr))

#define __raw_writeb(b,addr) ((*(volatile u8 *) (addr)) = (b))
#define __raw_writew(w,addr) ((*(volatile u16 *) (addr)) = (w))
#define __raw_writel(l,addr) ((*(volatile u32 *) (addr)) = (l))

#define readb(addr)		in_8((volatile u8 *)(addr))
#define writeb(b,addr)		out_8((volatile u8 *)(addr), (b))
#if !defined(__BIG_ENDIAN)
#define readw(addr)		(*(volatile u16 *) (addr))
#define readl(addr)		(*(volatile u32 *) (addr))
#define writew(b,addr)		((*(volatile u16 *) (addr)) = (b))
#define writel(b,addr)		((*(volatile u32 *) (addr)) = (b))
#else
#define readw(addr)		in_le16((volatile u16 *)(addr))
#define readl(addr)		in_le32((volatile u32 *)(addr))
#define writew(b,addr)		out_le16((volatile u16 *)(addr),(b))
#define writel(b,addr)		out_le32((volatile u32 *)(addr),(b))
#endif

/*
 * The insw/outsw/insl/outsl macros don't do byte-swapping.
 * They are only used in practice for transferring buffers which
 * are arrays of bytes, and byte-swapping is not appropriate in
 * that case.  - paulus
 */
#define insb(port, buf, ns)	_insb((u8 *)((port)+_IO_BASE), (buf), (ns))
#define outsb(port, buf, ns)	_outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
#define insw(port, buf, ns)	_insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
#define outsw(port, buf, ns)	_outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
#define insl(port, buf, nl)	_insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
#define outsl(port, buf, nl)	_outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))

#define inb(port)		in_8((u8 *)((port)+_IO_BASE))
#define outb(val, port)		out_8((u8 *)((port)+_IO_BASE), (val))
#if !defined(__BIG_ENDIAN)
#define inw(port)		in_be16((u16 *)((port)+_IO_BASE))
#define outw(val, port)		out_be16((u16 *)((port)+_IO_BASE), (val))
#define inl(port)		in_be32((u32 *)((port)+_IO_BASE))
#define outl(val, port)		out_be32((u32 *)((port)+_IO_BASE), (val))
#else
#define inw(port)		in_le16((u16 *)((port)+_IO_BASE))
#define outw(val, port)		out_le16((u16 *)((port)+_IO_BASE), (val))
#define inl(port)		in_le32((u32 *)((port)+_IO_BASE))
#define outl(val, port)		out_le32((u32 *)((port)+_IO_BASE), (val))
#endif

extern inline void _insb(volatile u8 * port, void *buf, int ns)
{
	u8 *data = (u8 *) buf;
	while (ns--)
		*data++ = *port;
}

extern inline void _outsb(volatile u8 * port, const void *buf, int ns)
{
	u8 *data = (u8 *) buf;
	while (ns--)
		*port = *data++;
}

extern inline void _insw(volatile u16 * port, void *buf, int ns)
{
	u16 *data = (u16 *) buf;
	while (ns--)
		*data++ = __sw16(*port);
}

extern inline void _outsw(volatile u16 * port, const void *buf, int ns)
{
	u16 *data = (u16 *) buf;
	while (ns--) {
		*port = __sw16(*data);
		data++;
	}
}

extern inline void _insl(volatile u32 * port, void *buf, int nl)
{
	u32 *data = (u32 *) buf;
	while (nl--)
		*data++ = __sw32(*port);
}

extern inline void _outsl(volatile u32 * port, const void *buf, int nl)
{
	u32 *data = (u32 *) buf;
	while (nl--) {
		*port = __sw32(*data);
		data++;
	}
}

extern inline void _insw_ns(volatile u16 * port, void *buf, int ns)
{
	u16 *data = (u16 *) buf;
	while (ns--)
		*data++ = *port;
}

extern inline void _outsw_ns(volatile u16 * port, const void *buf, int ns)
{
	u16 *data = (u16 *) buf;
	while (ns--) {
		*port = *data++;
	}
}

extern inline void _insl_ns(volatile u32 * port, void *buf, int nl)
{
	u32 *data = (u32 *) buf;
	while (nl--)
		*data++ = *port;
}

extern inline void _outsl_ns(volatile u32 * port, const void *buf, int nl)
{
	u32 *data = (u32 *) buf;
	while (nl--) {
		*port = *data;
		data++;
	}
}

/*
 * The *_ns versions below don't do byte-swapping.
 * Neither do the standard versions now, these are just here
 * for older code.
 */
#define insw_ns(port, buf, ns)	_insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
#define outsw_ns(port, buf, ns)	_outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
#define insl_ns(port, buf, nl)	_insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
#define outsl_ns(port, buf, nl)	_outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))

#define IO_SPACE_LIMIT ~0

/*
 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
 */
extern inline int in_8(volatile u8 * addr)
{
	return (int)*addr;
}

extern inline void out_8(volatile u8 * addr, int val)
{
	*addr = (u8) val;
}

extern inline int in_le16(volatile u16 * addr)
{
	return __sw16(*addr);
}

extern inline int in_be16(volatile u16 * addr)
{
	return (*addr & 0xFFFF);
}

extern inline void out_le16(volatile u16 * addr, int val)
{
	*addr = __sw16(val);
}

extern inline void out_be16(volatile u16 * addr, int val)
{
	*addr = (u16) val;
}

extern inline unsigned in_le32(volatile u32 * addr)
{
	return __sw32(*addr);
}

extern inline unsigned in_be32(volatile u32 * addr)
{
	return (*addr);
}

extern inline void out_le32(volatile unsigned *addr, int val)
{
	*addr = __sw32(val);
}

extern inline void out_be32(volatile unsigned *addr, int val)
{
	*addr = val;
}

static inline void sync(void)
{
	/* This sync function is for PowerPC or other architecture instruction
	 * ColdFire does not have this instruction. Dummy function, added for
	 * compatibility (CFI driver)
	 */
}

/*
 * Given a physical address and a length, return a virtual address
 * that can be used to access the memory range with the caching
 * properties specified by "flags".
 */
#define MAP_NOCACHE	(0)
#define MAP_WRCOMBINE	(0)
#define MAP_WRBACK	(0)
#define MAP_WRTHROUGH	(0)

static inline void *map_physmem(phys_addr_t paddr, unsigned long len,
				unsigned long flags)
{
	return (void *)paddr;
}

/*
 * Take down a mapping set up by map_physmem().
 */
static inline void unmap_physmem(void *vaddr, unsigned long flags)
{

}

static inline phys_addr_t virt_to_phys(void * vaddr)
{
	return (phys_addr_t)(vaddr);
}

#endif				/* __ASM_M68K_IO_H__ */
Commit	Line	Data
8e585f02 TL	1	/*
	2	* IO header file
	3	*
	4	* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
	5	* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
	6	*
	7	* See file CREDITS for list of people who contributed to this
	8	* project.
	9	*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public License as
	12	* published by the Free Software Foundation; either version 2 of
	13	* the License, or (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	23	* MA 02111-1307 USA
	24	*/
3a197b2f	25
8cd5cd6d	26	#ifndef __ASM_M68K_IO_H__
8e585f02 TL	27	#define __ASM_M68K_IO_H__
	28
	29	#include <asm/byteorder.h>
	30
88c811b1 TL	31	#ifndef _IO_BASE
	32	#define _IO_BASE 0
	33	#endif
	34
397b7b81 TL	35	#define __raw_readb(addr) ((volatile u8 )(addr))
	36	#define __raw_readw(addr) ((volatile u16 )(addr))
	37	#define __raw_readl(addr) ((volatile u32 )(addr))
812711ce	38
397b7b81 TL	39	#define __raw_writeb(b,addr) (((volatile u8 ) (addr)) = (b))
	40	#define __raw_writew(w,addr) (((volatile u16 ) (addr)) = (w))
	41	#define __raw_writel(l,addr) (((volatile u32 ) (addr)) = (l))
812711ce	42
ab77bc54 TL	43	#define readb(addr) in_8((volatile u8 *)(addr))
ab77bc54 TL	44	#define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
8e585f02	45	#if !defined(__BIG_ENDIAN)
ab77bc54 TL	46	#define readw(addr) ((volatile u16 ) (addr))
	47	#define readl(addr) ((volatile u32 ) (addr))
	48	#define writew(b,addr) (((volatile u16 ) (addr)) = (b))
	49	#define writel(b,addr) (((volatile u32 ) (addr)) = (b))
8e585f02	50	#else
ab77bc54 TL	51	#define readw(addr) in_le16((volatile u16 *)(addr))
	52	#define readl(addr) in_le32((volatile u32 *)(addr))
	53	#define writew(b,addr) out_le16((volatile u16 *)(addr),(b))
	54	#define writel(b,addr) out_le32((volatile u32 *)(addr),(b))
8e585f02 TL	55	#endif
	56
	57	/*
	58	* The insw/outsw/insl/outsl macros don't do byte-swapping.
	59	* They are only used in practice for transferring buffers which
	60	* are arrays of bytes, and byte-swapping is not appropriate in
	61	* that case. - paulus
	62	*/
ab77bc54 TL	63	#define insb(port, buf, ns) _insb((u8 *)((port)+_IO_BASE), (buf), (ns))
	64	#define outsb(port, buf, ns) _outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
	65	#define insw(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
	66	#define outsw(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
	67	#define insl(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
	68	#define outsl(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
	69
	70	#define inb(port) in_8((u8 *)((port)+_IO_BASE))
	71	#define outb(val, port) out_8((u8 *)((port)+_IO_BASE), (val))
8e585f02	72	#if !defined(__BIG_ENDIAN)
ab77bc54 TL	73	#define inw(port) in_be16((u16 *)((port)+_IO_BASE))
	74	#define outw(val, port) out_be16((u16 *)((port)+_IO_BASE), (val))
	75	#define inl(port) in_be32((u32 *)((port)+_IO_BASE))
	76	#define outl(val, port) out_be32((u32 *)((port)+_IO_BASE), (val))
8e585f02	77	#else
ab77bc54 TL	78	#define inw(port) in_le16((u16 *)((port)+_IO_BASE))
	79	#define outw(val, port) out_le16((u16 *)((port)+_IO_BASE), (val))
	80	#define inl(port) in_le32((u32 *)((port)+_IO_BASE))
	81	#define outl(val, port) out_le32((u32 *)((port)+_IO_BASE), (val))
8e585f02 TL	82	#endif
	83
	84	extern inline void _insb(volatile u8 * port, void *buf, int ns)
	85	{
	86	u8 data = (u8 ) buf;
	87	while (ns--)
	88	data++ = port;
	89	}
	90
	91	extern inline void _outsb(volatile u8 * port, const void *buf, int ns)
	92	{
	93	u8 data = (u8 ) buf;
	94	while (ns--)
	95	port = data++;
	96	}
	97
	98	extern inline void _insw(volatile u16 * port, void *buf, int ns)
	99	{
	100	u16 data = (u16 ) buf;
	101	while (ns--)
	102	data++ = __sw16(port);
	103	}
	104
	105	extern inline void _outsw(volatile u16 * port, const void *buf, int ns)
	106	{
	107	u16 data = (u16 ) buf;
	108	while (ns--) {
	109	port = __sw16(data);
	110	data++;
	111	}
	112	}
	113
	114	extern inline void _insl(volatile u32 * port, void *buf, int nl)
	115	{
	116	u32 data = (u32 ) buf;
	117	while (nl--)
	118	data++ = __sw32(port);
	119	}
	120
	121	extern inline void _outsl(volatile u32 * port, const void *buf, int nl)
	122	{
	123	u32 data = (u32 ) buf;
	124	while (nl--) {
	125	port = __sw32(data);
	126	data++;
	127	}
	128	}
	129
	130	extern inline void _insw_ns(volatile u16 * port, void *buf, int ns)
	131	{
	132	u16 data = (u16 ) buf;
	133	while (ns--)
	134	data++ = port;
	135	}
	136
	137	extern inline void _outsw_ns(volatile u16 * port, const void *buf, int ns)
	138	{
	139	u16 data = (u16 ) buf;
	140	while (ns--) {
	141	port = data++;
	142	}
	143	}
	144
	145	extern inline void _insl_ns(volatile u32 * port, void *buf, int nl)
146	{
147	u32 data = (u32 ) buf;
148	while (nl--)
149	data++ = port;
150	}
151
152	extern inline void _outsl_ns(volatile u32 * port, const void *buf, int nl)
153	{
154	u32 data = (u32 ) buf;
155	while (nl--) {
156	port = data;
157	data++;
158	}
159	}
160
161	/*
162	* The *_ns versions below don't do byte-swapping.
163	* Neither do the standard versions now, these are just here
164	* for older code.
165	*/
ab77bc54 TL	166	#define insw_ns(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
	167	#define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
	168	#define insl_ns(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
	169	#define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
8e585f02 TL	170
	171	#define IO_SPACE_LIMIT ~0
	172
	173	/*
	174	* 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
	175	*/
	176	extern inline int in_8(volatile u8 * addr)
	177	{
	178	return (int)*addr;
	179	}
	180
	181	extern inline void out_8(volatile u8 * addr, int val)
	182	{
	183	*addr = (u8) val;
	184	}
	185
	186	extern inline int in_le16(volatile u16 * addr)
	187	{
	188	return __sw16(*addr);
	189	}
	190
	191	extern inline int in_be16(volatile u16 * addr)
	192	{
	193	return (*addr & 0xFFFF);
	194	}
	195
	196	extern inline void out_le16(volatile u16 * addr, int val)
	197	{
	198	*addr = __sw16(val);
	199	}
	200
	201	extern inline void out_be16(volatile u16 * addr, int val)
	202	{
	203	*addr = (u16) val;
	204	}
	205
	206	extern inline unsigned in_le32(volatile u32 * addr)
	207	{
	208	return __sw32(*addr);
	209	}
	210
	211	extern inline unsigned in_be32(volatile u32 * addr)
	212	{
	213	return (*addr);
	214	}
	215
	216	extern inline void out_le32(volatile unsigned *addr, int val)
	217	{
	218	*addr = __sw32(val);
	219	}
	220
	221	extern inline void out_be32(volatile unsigned *addr, int val)
3a197b2f	222	{
8e585f02	223	*addr = val;
3a197b2f HW	224	}
3a197b2f HW	225
6fde84a4 TL	226	static inline void sync(void)
	227	{
	228	/* This sync function is for PowerPC or other architecture instruction
	229	* ColdFire does not have this instruction. Dummy function, added for
	230	* compatibility (CFI driver)
	231	*/
	232	}
4d7d6936 HS	233
	234	/*
	235	* Given a physical address and a length, return a virtual address
	236	* that can be used to access the memory range with the caching
	237	* properties specified by "flags".
	238	*/
4d7d6936 HS	239	#define MAP_NOCACHE (0)
	240	#define MAP_WRCOMBINE (0)
	241	#define MAP_WRBACK (0)
	242	#define MAP_WRTHROUGH (0)
	243
397b7b81 TL	244	static inline void *map_physmem(phys_addr_t paddr, unsigned long len,
397b7b81 TL	245	unsigned long flags)
4d7d6936 HS	246	{
	247	return (void *)paddr;
	248	}
	249
	250	/*
	251	* Take down a mapping set up by map_physmem().
	252	*/
	253	static inline void unmap_physmem(void *vaddr, unsigned long flags)
	254	{
	255
	256	}
	257
65e43a10 KG	258	static inline phys_addr_t virt_to_phys(void * vaddr)
	259	{
	260	return (phys_addr_t)(vaddr);
	261	}
	262
8e585f02	263	#endif /* __ASM_M68K_IO_H__ */