bus.h

基于组件方式开发操作系统的OSKIT源代码

			loop 1b"				:
		    "=&a" (__x)					:
		    "d" (bsh + offset), "D" (addr), "c" (count)	:
		    "%edx", "%edi", "%ecx", "memory");
	}
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
	{
		__asm __volatile("				\n\
			cld					\n\
			repne					\n\
			movsl"					:
								:
		    "S" (bsh + offset), "D" (addr), "c" (count)	:
		    "%esi", "%edi", "%ecx", "memory");
	}
#endif
}

#if 0	/* Cause a link error for bus_space_read_region_8 */
#define	bus_space_read_region_8	!!! bus_space_read_region_8 unimplemented !!!
#endif

/*
 * Write the 1, 2, 4, or 8 byte value `value' to bus space
 * described by tag/handle/offset.
 */

static __inline void bus_space_write_1(bus_space_tag_t tag,
				       bus_space_handle_t bsh,
				       bus_size_t offset, u_int8_t value);

static __inline void bus_space_write_2(bus_space_tag_t tag,
				       bus_space_handle_t bsh,
				       bus_size_t offset, u_int16_t value);

static __inline void bus_space_write_4(bus_space_tag_t tag,
				       bus_space_handle_t bsh,
				       bus_size_t offset, u_int32_t value);

static __inline void
bus_space_write_1(bus_space_tag_t tag, bus_space_handle_t bsh,
		       bus_size_t offset, u_int8_t value)
{
#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
		outb(bsh + offset, value);
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
		*(volatile u_int8_t *)(bsh + offset) = value;
#endif
}

static __inline void
bus_space_write_2(bus_space_tag_t tag, bus_space_handle_t bsh,
		       bus_size_t offset, u_int16_t value)
{
#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
		outw(bsh + offset, value);
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
		*(volatile u_int16_t *)(bsh + offset) = value;
#endif
}

static __inline void
bus_space_write_4(bus_space_tag_t tag, bus_space_handle_t bsh,
		       bus_size_t offset, u_int32_t value)
{
#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
		outl(bsh + offset, value);
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
		*(volatile u_int32_t *)(bsh + offset) = value;
#endif
}

#if 0	/* Cause a link error for bus_space_write_8 */
#define	bus_space_write_8	!!! bus_space_write_8 not implemented !!!
#endif

/*
 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
 * provided to bus space described by tag/handle/offset.
 */

static __inline void bus_space_write_multi_1(bus_space_tag_t tag,
					     bus_space_handle_t bsh,
					     bus_size_t offset,
					     const u_int8_t *addr,
					     size_t count);
static __inline void bus_space_write_multi_2(bus_space_tag_t tag,
					     bus_space_handle_t bsh,
					     bus_size_t offset,
					     const u_int16_t *addr,
					     size_t count);

static __inline void bus_space_write_multi_4(bus_space_tag_t tag,
					     bus_space_handle_t bsh,
					     bus_size_t offset,
					     const u_int32_t *addr,
					     size_t count);

static __inline void
bus_space_write_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh,
			bus_size_t offset, const u_int8_t *addr, size_t count)
{
#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
		outsb(bsh + offset, addr, count);
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
	{
		int __x __asm__("%eax");
		__asm __volatile("				\n\
			cld					\n\
		1:	lodsb					\n\
			movb %%al,(%1)				\n\
			loop 1b"				:
		    "=&a" (__x)					:
		    "r" (bsh + offset), "S" (addr), "c" (count)	:
		    "%esi", "%ecx");
	}
#endif
}

static __inline void
bus_space_write_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh,
			bus_size_t offset, const u_int16_t *addr, size_t count)
{
#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
		outsw(bsh + offset, addr, count);
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
	{
		int __x __asm__("%eax");
		__asm __volatile("				\n\
			cld					\n\
		1:	lodsw					\n\
			movw %%ax,(%1)				\n\
			loop 1b"				:
		    "=&a" (__x)					:
		    "r" (bsh + offset), "S" (addr), "c" (count)	:
		    "%esi", "%ecx");
	}
#endif
}

static __inline void
bus_space_write_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
			bus_size_t offset, const u_int32_t *addr, size_t count)
{
#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
		outsl(bsh + offset, addr, count);
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
	{
		int __x __asm__("%eax");
		__asm __volatile("				\n\
			cld					\n\
		1:	lodsl					\n\
			movl %%eax,(%1)				\n\
			loop 1b"				:
		    "=&a" (__x)					:
		    "r" (bsh + offset), "S" (addr), "c" (count)	:
		    "%esi", "%ecx");
	}
#endif
}

#if 0	/* Cause a link error for bus_space_write_multi_8 */
#define	bus_space_write_multi_8(t, h, o, a, c)				\
			!!! bus_space_write_multi_8 unimplemented !!!
#endif

/*
 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
 * to bus space described by tag/handle starting at `offset'.
 */

static __inline void bus_space_write_region_1(bus_space_tag_t tag,
					      bus_space_handle_t bsh,
					      bus_size_t offset,
					      const u_int8_t *addr,
					      size_t count);
static __inline void bus_space_write_region_2(bus_space_tag_t tag,
					      bus_space_handle_t bsh,
					      bus_size_t offset,
					      const u_int16_t *addr,
					      size_t count);
static __inline void bus_space_write_region_4(bus_space_tag_t tag,
					      bus_space_handle_t bsh,
					      bus_size_t offset,
					      const u_int32_t *addr,
					      size_t count);

static __inline void
bus_space_write_region_1(bus_space_tag_t tag, bus_space_handle_t bsh,
			 bus_size_t offset, const u_int8_t *addr, size_t count)
{
#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
	{
		int __x __asm__("%eax");
		__asm __volatile("				\n\
			cld					\n\
		1:	lodsb					\n\
			outb %%al,%w1				\n\
			incl %1					\n\
			loop 1b"				:
		    "=&a" (__x)					:
		    "d" (bsh + offset), "S" (addr), "c" (count)	:
		    "%edx", "%esi", "%ecx", "memory");
	}
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
	{
		__asm __volatile("				\n\
			cld					\n\
			repne					\n\
			movsb"					:
								:
		    "D" (bsh + offset), "S" (addr), "c" (count)	:
		    "%edi", "%esi", "%ecx", "memory");
	}
#endif
}

static __inline void
bus_space_write_region_2(bus_space_tag_t tag, bus_space_handle_t bsh,
			 bus_size_t offset, const u_int16_t *addr, size_t count)
{
#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
	{
		int __x __asm__("%eax");
		__asm __volatile("				\n\
			cld					\n\
		1:	lodsw					\n\
			outw %%ax,%w1				\n\
			addl $2,%1				\n\
			loop 1b"				:
		    "=&a" (__x)					:
		    "d" (bsh + offset), "S" (addr), "c" (count)	:
		    "%edx", "%esi", "%ecx", "memory");
	}
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
	{
		__asm __volatile("				\n\
			cld					\n\
			repne					\n\
			movsw"					:
								:
		    "D" (bsh + offset), "S" (addr), "c" (count)	:
		    "%edi", "%esi", "%ecx", "memory");
	}
#endif
}

static __inline void
bus_space_write_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
			 bus_size_t offset, const u_int32_t *addr, size_t count)
{
#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
	{
		int __x __asm__("%eax");
		__asm __volatile("				\n\
			cld					\n\
		1:	lodsl					\n\
			outl %%eax,%w1				\n\
			addl $4,%1				\n\
			loop 1b"				:
		    "=&a" (__x)					:
		    "d" (bsh + offset), "S" (addr), "c" (count)	:
		    "%edx", "%esi", "%ecx", "memory");
	}
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
	{
		__asm __volatile("				\n\
			cld					\n\
			repne					\n\
			movsl"					:
								:
		    "D" (bsh + offset), "S" (addr), "c" (count)	:
		    "%edi", "%esi", "%ecx", "memory");
	}
#endif
}

#if 0	/* Cause a link error for bus_space_write_region_8 */
#define	bus_space_write_region_8					\
			!!! bus_space_write_region_8 unimplemented !!!
#endif

/*
 * Write the 1, 2, 4, or 8 byte value `val' to bus space described
 * by tag/handle/offset `count' times.
 */

static __inline void bus_space_set_multi_1(bus_space_tag_t tag,
					   bus_space_handle_t bsh,
					   bus_size_t offset,
					   u_int8_t value, size_t count);
static __inline void bus_space_set_multi_2(bus_space_tag_t tag,
					   bus_space_handle_t bsh,
					   bus_size_t offset,
					   u_int16_t value, size_t count);
static __inline void bus_space_set_multi_4(bus_space_tag_t tag,
					   bus_space_handle_t bsh,
					   bus_size_t offset,
					   u_int32_t value, size_t count);

static __inline void
bus_space_set_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh,
		      bus_size_t offset, u_int8_t value, size_t count)
{
	bus_addr_t addr = bsh + offset;

#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
		while (count--)
			outb(addr, value);
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
		while (count--)
			*(volatile u_int8_t *)(addr) = value;
#endif
}

static __inline void
bus_space_set_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh,
		     bus_size_t offset, u_int16_t value, size_t count)
{
	bus_addr_t addr = bsh + offset;

#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
		while (count--)
			outw(addr, value);
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif
		while (count--)
			*(volatile u_int16_t *)(addr) = value;
#endif
}

static __inline void
bus_space_set_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
		      bus_size_t offset, u_int32_t value, size_t count)
{
	bus_addr_t addr = bsh + offset;

#if defined(_I386_BUS_PIO_H_)
#if defined(_I386_BUS_MEMIO_H_)
	if (tag == I386_BUS_SPACE_IO)
#endif
		while (count--)
			outl(addr, value);
#endif
#if defined(_I386_BUS_MEMIO_H_)
#if defined(_I386_BUS_PIO_H_)
	else
#endif