io.c File Reference

NuttX libmetal io operations. More...

#include <stddef.h>
#include <metal/cache.h>
#include <metal/io.h>
#include <nuttx/arch.h>

Functions
static uint64_t	metal_io_read_ (struct metal_io_region *io, unsigned long offset, memory_order order, int width)
static void	metal_io_write_ (struct metal_io_region *io, unsigned long offset, uint64_t value, memory_order order, int width)
static int	metal_io_block_read_ (struct metal_io_region *io, unsigned long offset, void *restrict dst, memory_order order, int len)
static int	metal_io_block_write_ (struct metal_io_region *io, unsigned long offset, const void *restrict src, memory_order order, int len)
static void	metal_io_block_set_ (struct metal_io_region *io, unsigned long offset, unsigned char value, memory_order order, int len)
static void	metal_io_close_ (struct metal_io_region *io)
static metal_phys_addr_t	metal_io_offset_to_phys_ (struct metal_io_region *io, unsigned long offset)
static unsigned long	metal_io_phys_to_offset_ (struct metal_io_region *io, metal_phys_addr_t phys)
struct metal_io_ops *	metal_io_get_ops (void)
	Get the default global io ops. More...
struct metal_io_region *	metal_io_get_region (void)
	Get the default global io region. More...

Variables
static metal_phys_addr_t	metal_io_phys_start_
static struct metal_io_region	metal_io_region_

Detailed Description

NuttX libmetal io operations.

Function Documentation

metal_io_block_read_()

static int metal_io_block_read_ ( struct metal_io_region *  io, unsigned long  offset, void *restrict  dst, memory_order  order, int  len  )

static

metal_io_block_set_()

static void metal_io_block_set_ ( struct metal_io_region *  io, unsigned long  offset, unsigned char  value, memory_order  order, int  len  )

static

metal_io_block_write_()

static int metal_io_block_write_ ( struct metal_io_region *  io, unsigned long  offset, const void *restrict  src, memory_order  order, int  len  )

static

metal_io_close_()

static void metal_io_close_ ( struct metal_io_region *  io )

static

metal_io_get_ops()

struct metal_io_ops* metal_io_get_ops

(

void

)

Get the default global io ops.

Returns

an io ops.

metal_io_get_region()

struct metal_io_region* metal_io_get_region

(

void

)

Get the default global io region.

Returns

an io region.

metal_io_offset_to_phys_()

static metal_phys_addr_t metal_io_offset_to_phys_ ( struct metal_io_region *  io, unsigned long  offset  )

static

metal_io_phys_to_offset_()

static unsigned long metal_io_phys_to_offset_ ( struct metal_io_region *  io, metal_phys_addr_t  phys  )

static

metal_io_read_()

static uint64_t metal_io_read_ ( struct metal_io_region *  io, unsigned long  offset, memory_order  order, int  width  )

static

metal_io_write_()

static void metal_io_write_ ( struct metal_io_region *  io, unsigned long  offset, uint64_t  value, memory_order  order, int  width  )

static

Variable Documentation

metal_io_phys_start_

metal_phys_addr_t metal_io_phys_start_

static

metal_io_region_

struct metal_io_region metal_io_region_

static

Initial value:

= {
        .virt = NULL,
        .physmap = &metal_io_phys_start_,
        .size = (size_t)-1,
        .page_shift = sizeof(metal_phys_addr_t) * CHAR_BIT,
        .page_mask = (metal_phys_addr_t)-1,
        .mem_flags = 0,
        .ops = {
                .read = metal_io_read_,
                .write = metal_io_write_,
                .block_read = metal_io_block_read_,
                .block_write = metal_io_block_write_,
                .block_set = metal_io_block_set_,
                .close = metal_io_close_,
                .offset_to_phys = metal_io_offset_to_phys_,
                .phys_to_offset = metal_io_phys_to_offset_,
        },
}