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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2016 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_FDTBUS_HEADER
#define GRUB_FDTBUS_HEADER 1
#include <grub/fdt.h>
#include <grub/err.h>
struct grub_fdtbus_dev
{
struct grub_fdtbus_dev *next;
struct grub_fdtbus_dev *parent;
int node;
struct grub_fdtbus_driver *driver;
};
struct grub_fdtbus_driver
{
struct grub_fdtbus_driver *next;
struct grub_fdtbus_driver **prev;
const char *compatible;
grub_err_t (*attach) (const struct grub_fdtbus_dev *dev);
void (*detach) (const struct grub_fdtbus_dev *dev);
/* Message bus operations. */
grub_err_t (*send) (const struct grub_fdtbus_dev *dev, const void *data, grub_size_t sz);
grub_err_t (*receive) (const struct grub_fdtbus_dev *dev, void *data, grub_size_t sz);
grub_err_t (*start) (const struct grub_fdtbus_dev *dev);
void (*stop) (const struct grub_fdtbus_dev *dev);
};
extern char EXPORT_VAR(grub_fdtbus_invalid_mapping)[1];
static inline int
grub_fdtbus_is_mapping_valid (volatile void *m)
{
return m != grub_fdtbus_invalid_mapping;
}
volatile void *
EXPORT_FUNC(grub_fdtbus_map_reg) (const struct grub_fdtbus_dev *dev, int reg, grub_size_t *size);
const void *
EXPORT_FUNC(grub_fdtbus_get_fdt) (void);
const char *
EXPORT_FUNC(grub_fdtbus_get_name) (const struct grub_fdtbus_dev *dev);
const void *
EXPORT_FUNC(grub_fdtbus_get_prop) (const struct grub_fdtbus_dev *dev,
const char *name,
grub_uint32_t *len);
void
EXPORT_FUNC(grub_fdtbus_register) (struct grub_fdtbus_driver *driver);
void
EXPORT_FUNC(grub_fdtbus_unregister) (struct grub_fdtbus_driver *driver);
int
EXPORT_FUNC(grub_fdtbus_is_compatible) (const char *compat_string,
const struct grub_fdtbus_dev *dev);
/* Must be called before any register(). */
/* dtb is assumed to be unfreeable and must remain
valid for lifetime of GRUB.
*/
void
grub_fdtbus_init (const void *dtb, grub_size_t size);
#endif
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