Add a list of open protocol infos to each protocol of a handle.
Provide helper functions to access the list items.
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
v3
no change
v2
no change
---
include/efi_loader.h | 15 ++++++++++++++-
lib/efi_loader/efi_boottime.c | 35 +++++++++++++++++++++++++++++++++++
2 files changed, 49 insertions(+), 1 deletion(-)
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 6185055e78..637e6e166d 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -96,15 +96,28 @@ extern const efi_guid_t efi_file_info_guid;
extern unsigned int __efi_runtime_start, __efi_runtime_stop;
extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop;
+/*
+ * When a protocol is opened a open protocol info entry is created.
+ * These are maintained in a list.
+ */
+struct efi_open_protocol_info_item {
+ /* Link to the list of open protocol info entries of a protocol */
+ struct list_head link;
+ struct efi_open_protocol_info_entry info;
+};
+
/*
* When the UEFI payload wants to open a protocol on an object to get its
* interface (usually a struct with callback functions), this struct maps the
- * protocol GUID to the respective protocol interface */
+ * protocol GUID to the respective protocol interface
+ */
struct efi_handler {
/* Link to the list of protocols of a handle */
struct list_head link;
const efi_guid_t *guid;
void *protocol_interface;
+ /* Link to the list of open protocol info items */
+ struct list_head open_infos;
};
/*
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 99eb36c306..f5ec2a8866 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -814,6 +814,40 @@ struct efi_object *efi_search_obj(const void *handle)
return NULL;
}
+/*
+ * Create open protocol info entry and add it to a protocol.
+ *
+ * @handler handler of a protocol
+ * @return open protocol info entry
+ */
+static struct efi_open_protocol_info_entry *efi_create_open_info(
+ struct efi_handler *handler)
+{
+ struct efi_open_protocol_info_item *item;
+
+ item = calloc(1, sizeof(struct efi_open_protocol_info_item));
+ if (!item)
+ return NULL;
+ /* Append the item to the open protocol info list. */
+ list_add_tail(&item->link, &handler->open_infos);
+
+ return &item->info;
+}
+
+/*
+ * Remove an open protocol info entry from a protocol.
+ *
+ * @handler handler of a protocol
+ * @return status code
+ */
+static efi_status_t efi_delete_open_info(
+ struct efi_open_protocol_info_item *item)
+{
+ list_del(&item->link);
+ free(item);
+ return EFI_SUCCESS;
+}
+
/*
* Install new protocol on a handle.
*
@@ -840,6 +874,7 @@ efi_status_t efi_add_protocol(const void *handle, const
efi_guid_t *protocol,
return EFI_OUT_OF_RESOURCES;
handler->guid = protocol;
handler->protocol_interface = protocol_interface;
+ INIT_LIST_HEAD(&handler->open_infos);
list_add_tail(&handler->link, &efiobj->protocols);
return EFI_SUCCESS;
}
--
2.14.2
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
