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fdtbus: Add ability to send/receive messages on parent busses.

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This commit is contained in:
Vladimir Serbinenko 2017-05-09 08:40:29 +02:00
parent 4f8471532d
commit c4313c812d
2 changed files with 34 additions and 19 deletions
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18
include/grub/fdtbus.h
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@ -22,7 +22,13 @@
#include <grub/fdt.h>
#include <grub/err.h>
struct grub_fdtbus_dev;
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
{
@ -33,6 +39,12 @@ struct grub_fdtbus_driver
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];
@ -63,6 +75,10 @@ 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.