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efi_driver: provide driver binding protocol to bind function

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DisconnectController() is based on the open protocol information created
when the driver opens a protocol with BY_CHILD_CONTROLLER or BY_DRIVER.

To create an open protocol information it is required to supply the handle
of the driver as agent handle. This information is available as field
DriverBindingHandle in the driver binding protocol.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Heinrich Schuchardt 2022-10-04 19:12:59 +02:00
parent 939f204c5a
commit ec4f675f9e
3 changed files with 20 additions and 16 deletions
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29
include/efi_driver.h
View file

@ -10,6 +10,19 @@
#include <efi_loader.h>
/**
* struct efi_driver_binding_extended_protocol - extended driver binding protocol
*
* This structure adds internal fields to the driver binding protocol.
*
* @bp: driver binding protocol
* @ops: operations supported by the driver
*/
struct efi_driver_binding_extended_protocol {
struct efi_driver_binding_protocol bp;
const struct efi_driver_ops *ops;
};
/**
* struct efi_driver_ops - operations support by an EFI driver
*
@ -25,20 +38,8 @@
struct efi_driver_ops {
const efi_guid_t *protocol;
const efi_guid_t *child_protocol;
efi_status_t (*bind)(efi_handle_t handle, void *interface);
};
/**
* struct efi_driver_binding_extended_protocol - extended driver binding protocol
*
* This structure adds internal fields to the driver binding protocol.
*
* @bp: driver binding protocol
* @ops: operations supported by the driver
*/
struct efi_driver_binding_extended_protocol {
struct efi_driver_binding_protocol bp;
const struct efi_driver_ops *ops;
efi_status_t (*bind)(struct efi_driver_binding_extended_protocol *this,
efi_handle_t handle, void *interface);
};
#endif /* _EFI_DRIVER_H */

5
lib/efi_driver/efi_block_device.c
View file

@ -174,11 +174,14 @@ err:
/**
* efi_bl_bind() - bind to a block io protocol
*
* @this: driver binding protocol
* @handle: handle
* @interface: block io protocol
* Return: status code
*/
static efi_status_t efi_bl_bind(efi_handle_t handle, void *interface)
static efi_status_t efi_bl_bind(
struct efi_driver_binding_extended_protocol *this,
efi_handle_t handle, void *interface)
{
efi_status_t ret = EFI_SUCCESS;
struct efi_object *obj = efi_search_obj(handle);

2
lib/efi_driver/efi_uclass.c
View file

@ -146,7 +146,7 @@ static efi_status_t EFIAPI efi_uc_start(
ret = check_node_type(controller_handle);
if (ret != EFI_SUCCESS)
goto err;
ret = bp->ops->bind(controller_handle, interface);
ret = bp->ops->bind(bp, controller_handle, interface);
if (ret == EFI_SUCCESS)
goto out;