x86_io.c File Reference

iPXE I/O API for x86 More...

#include <ipxe/io.h>
#include <ipxe/x86_io.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
static __unused uint64_t	i386_readq (volatile uint64_t *io_addr)
	Read 64-bit qword from memory-mapped device. More...
static __unused void	i386_writeq (uint64_t data, volatile uint64_t *io_addr)
	Write 64-bit qword to memory-mapped device. More...
	PROVIDE_IOAPI_INLINE (x86, phys_to_bus)
	PROVIDE_IOAPI_INLINE (x86, bus_to_phys)
	PROVIDE_IOAPI_INLINE (x86, readb)
	PROVIDE_IOAPI_INLINE (x86, readw)
	PROVIDE_IOAPI_INLINE (x86, readl)
	PROVIDE_IOAPI_INLINE (x86, writeb)
	PROVIDE_IOAPI_INLINE (x86, writew)
	PROVIDE_IOAPI_INLINE (x86, writel)
	PROVIDE_IOAPI_INLINE (x86, inb)
	PROVIDE_IOAPI_INLINE (x86, inw)
	PROVIDE_IOAPI_INLINE (x86, inl)
	PROVIDE_IOAPI_INLINE (x86, outb)
	PROVIDE_IOAPI_INLINE (x86, outw)
	PROVIDE_IOAPI_INLINE (x86, outl)
	PROVIDE_IOAPI_INLINE (x86, insb)
	PROVIDE_IOAPI_INLINE (x86, insw)
	PROVIDE_IOAPI_INLINE (x86, insl)
	PROVIDE_IOAPI_INLINE (x86, outsb)
	PROVIDE_IOAPI_INLINE (x86, outsw)
	PROVIDE_IOAPI_INLINE (x86, outsl)
	PROVIDE_IOAPI_INLINE (x86, iodelay)
	PROVIDE_IOAPI_INLINE (x86, mb)
	PROVIDE_IOAPI (x86, readq, i386_readq)
	PROVIDE_IOAPI (x86, writeq, i386_writeq)

Detailed Description

iPXE I/O API for x86

Definition in file x86_io.c.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

i386_readq()

static __unused uint64_t i386_readq ( volatile uint64_t *  io_addr )

static

Read 64-bit qword from memory-mapped device.

Parameters

io_addr

I/O address

Return values

data	Value read

This routine uses MMX instructions.

Definition at line 43 of file x86_io.c.

                                                                   {
        uint64_t data;
        __asm__ __volatile__ ( "pushl %%edx\n\t"
                               "pushl %%eax\n\t"
                               "movq (%1), %%mm0\n\t"
                               "movq %%mm0, (%%esp)\n\t"
                               "popl %%eax\n\t"
                               "popl %%edx\n\t"
                               "emms\n\t"
                               : "=A" ( data ) : "r" ( io_addr ) );
        return data;
}

References __asm__(), __volatile__(), and data.

i386_writeq()

static __unused void i386_writeq ( uint64_t  data, volatile uint64_t *  io_addr  )

static

Write 64-bit qword to memory-mapped device.

Parameters

data	Value to write
io_addr	I/O address

This routine uses MMX instructions.

Definition at line 64 of file x86_io.c.

                                                                               {
        __asm__ __volatile__ ( "pushl %%edx\n\t"
                               "pushl %%eax\n\t"
                               "movq (%%esp), %%mm0\n\t"
                               "movq %%mm0, (%1)\n\t"
                               "popl %%eax\n\t"
                               "popl %%edx\n\t"
                               "emms\n\t"
                               : : "A" ( data ), "r" ( io_addr ) );
}

References __asm__(), __volatile__(), and data.

PROVIDE_IOAPI_INLINE() [1/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		phys_to_bus
	)

PROVIDE_IOAPI_INLINE() [2/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		bus_to_phys
	)

PROVIDE_IOAPI_INLINE() [3/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		readb
	)

PROVIDE_IOAPI_INLINE() [4/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		readw
	)

PROVIDE_IOAPI_INLINE() [5/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		readl
	)

PROVIDE_IOAPI_INLINE() [6/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		writeb
	)

PROVIDE_IOAPI_INLINE() [7/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		writew
	)

PROVIDE_IOAPI_INLINE() [8/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		writel
	)

PROVIDE_IOAPI_INLINE() [9/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		inb
	)

PROVIDE_IOAPI_INLINE() [10/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		inw
	)

PROVIDE_IOAPI_INLINE() [11/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		inl
	)

PROVIDE_IOAPI_INLINE() [12/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		outb
	)

PROVIDE_IOAPI_INLINE() [13/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		outw
	)

PROVIDE_IOAPI_INLINE() [14/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		outl
	)

PROVIDE_IOAPI_INLINE() [15/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		insb
	)

PROVIDE_IOAPI_INLINE() [16/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		insw
	)

PROVIDE_IOAPI_INLINE() [17/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		insl
	)

PROVIDE_IOAPI_INLINE() [18/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		outsb
	)

PROVIDE_IOAPI_INLINE() [19/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		outsw
	)

PROVIDE_IOAPI_INLINE() [20/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		outsl
	)

PROVIDE_IOAPI_INLINE() [21/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		iodelay
	)

PROVIDE_IOAPI_INLINE() [22/22]

PROVIDE_IOAPI_INLINE	(	x86	,
		mb
	)

PROVIDE_IOAPI() [1/2]

PROVIDE_IOAPI	(	x86	,
		readq	,
		i386_readq
	)

PROVIDE_IOAPI() [2/2]

PROVIDE_IOAPI	(	x86	,
		writeq	,
		i386_writeq
	)