intel_vtd.h File Reference

#include <drivers/pcie/msi.h>

Go to the source code of this file.

Data Structures
struct	vtd_driver_api

Typedefs
typedef int(*	vtd_alloc_entries_f) (const struct device *dev, uint8_t n_entries)
typedef uint32_t(*	vtd_remap_msi_f) (const struct device *dev, msi_vector_t *vector)
typedef int(*	vtd_remap_f) (const struct device *dev, msi_vector_t *vector)

Functions
static int	vtd_allocate_entries (const struct device *dev, uint8_t n_entries)
	Allocate contiguous IRTEs. More...
static uint32_t	vtd_remap_msi (const struct device *dev, msi_vector_t *vector)
	Generate the MSI Message Address data for the given vector. More...
static int	vtd_remap (const struct device *dev, msi_vector_t *vector)
	Remap the given vector. More...

Typedef Documentation

vtd_alloc_entries_f

typedef int(* vtd_alloc_entries_f) (const struct device *dev, uint8_t n_entries)

vtd_remap_f

typedef int(* vtd_remap_f) (const struct device *dev, msi_vector_t *vector)

vtd_remap_msi_f

typedef uint32_t(* vtd_remap_msi_f) (const struct device *dev, msi_vector_t *vector)

Function Documentation

vtd_allocate_entries()

static int vtd_allocate_entries ( const struct device *  dev, uint8_t  n_entries  )

inlinestatic

Allocate contiguous IRTEs.

Parameters

dev	Pointer to the device structure for the driver instance
n_entries	How many IRTE to allocate

Note: It will try to allocate all, or it will fail.

Returns

The first allocated IRTE index, or -EBUSY on failure

vtd_remap()

static int vtd_remap ( const struct device *  dev, msi_vector_t *  vector  )

inlinestatic

Remap the given vector.

Parameters

dev	Pointer to the device structure for the driver instance
vector	A valid allocated MSI vector

Returns

0 on success, a negative errno otherwise

vtd_remap_msi()

static uint32_t vtd_remap_msi ( const struct device *  dev, msi_vector_t *  vector  )

inlinestatic

Generate the MSI Message Address data for the given vector.

Parameters

dev	Pointer to the device structure for the driver instance
vector	A valid allocated MSI vector

Returns

The MSI Message Address value