[U-Boot] [PATCH v2 2/2] efi_loader: eliminate handle member
Heinrich Schuchardt
xypron.glpk at gmx.de
Tue Sep 25 10:19:18 UTC 2018
A pointer to a struct efi_object is a handle. We do not need any handle
member in this structure. Let's eliminate it.
Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
v2
replace remaining parent.handle in efi_disk.c
---
include/efi_loader.h | 26 +++++++++-----
lib/efi_loader/efi_boottime.c | 59 ++++++++++++++++----------------
lib/efi_loader/efi_console.c | 20 +++++------
lib/efi_loader/efi_device_path.c | 2 +-
lib/efi_loader/efi_disk.c | 14 ++++----
lib/efi_loader/efi_gop.c | 2 +-
lib/efi_loader/efi_net.c | 6 ++--
7 files changed, 68 insertions(+), 61 deletions(-)
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 74df070316..6846bb03f3 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -173,20 +173,28 @@ struct efi_handler {
struct list_head open_infos;
};
-/*
- * UEFI has a poor man's OO model where one "object" can be polymorphic and have
- * multiple different protocols (classes) attached to it.
+/**
+ * struct efi_object - dereferenced EFI handle
+ *
+ * @link: pointers to put the handle into a linked list
+ * @protocols: linked list with the protocol interfaces installed on this
+ * handle
+ *
+ * UEFI offers a flexible and expandable object model. The objects in the UEFI
+ * API are devices, drivers, and loaded images. struct efi_object is our storage
+ * structure for these objects.
+ *
+ * When including this structure into a larger structure always put it first so
+ * that when deleting a handle the whole encompassing structure can be freed.
*
- * This struct is the parent struct for all of our actual implementation objects
- * that can include it to make themselves an EFI object
+ * A pointer to this structure is referred to as a handle. Typedef efi_handle_t
+ * has been created for such pointers.
*/
struct efi_object {
/* Every UEFI object is part of a global object list */
struct list_head link;
/* The list of protocols */
struct list_head protocols;
- /* The object spawner can either use this for data or as identifier */
- void *handle;
};
/**
@@ -296,11 +304,11 @@ void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map);
/* Call this to set the current device name */
void efi_set_bootdev(const char *dev, const char *devnr, const char *path);
/* Add a new object to the object list. */
-void efi_add_handle(struct efi_object *obj);
+void efi_add_handle(efi_handle_t obj);
/* Create handle */
efi_status_t efi_create_handle(efi_handle_t *handle);
/* Delete handle */
-void efi_delete_handle(struct efi_object *obj);
+void efi_delete_handle(efi_handle_t obj);
/* Call this to validate a handle and find the EFI object for it */
struct efi_object *efi_search_obj(const efi_handle_t handle);
/* Find a protocol on a handle */
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index bc6ad84495..f7d63a3178 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -416,13 +416,12 @@ static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
*
* The protocols list is initialized. The object handle is set.
*/
-void efi_add_handle(struct efi_object *obj)
+void efi_add_handle(efi_handle_t handle)
{
- if (!obj)
+ if (!handle)
return;
- INIT_LIST_HEAD(&obj->protocols);
- obj->handle = obj;
- list_add_tail(&obj->link, &efi_obj_list);
+ INIT_LIST_HEAD(&handle->protocols);
+ list_add_tail(&handle->link, &efi_obj_list);
}
/**
@@ -440,7 +439,7 @@ efi_status_t efi_create_handle(efi_handle_t *handle)
return EFI_OUT_OF_RESOURCES;
efi_add_handle(obj);
- *handle = obj->handle;
+ *handle = obj;
return EFI_SUCCESS;
}
@@ -536,13 +535,13 @@ efi_status_t efi_remove_all_protocols(const efi_handle_t handle)
*
* @obj: handle to delete
*/
-void efi_delete_handle(struct efi_object *obj)
+void efi_delete_handle(efi_handle_t handle)
{
- if (!obj)
+ if (!handle)
return;
- efi_remove_all_protocols(obj->handle);
- list_del(&obj->link);
- free(obj);
+ efi_remove_all_protocols(handle);
+ list_del(&handle->link);
+ free(handle);
}
/**
@@ -927,7 +926,7 @@ struct efi_object *efi_search_obj(const efi_handle_t handle)
struct efi_object *efiobj;
list_for_each_entry(efiobj, &efi_obj_list, link) {
- if (efiobj->handle == handle)
+ if (efiobj == handle)
return efiobj;
}
@@ -1052,7 +1051,7 @@ out:
/**
* efi_get_drivers() - get all drivers associated to a controller
- * @efiobj: handle of the controller
+ * @handle: handle of the controller
* @protocol: protocol GUID (optional)
* @number_of_drivers: number of child controllers
* @driver_handle_buffer: handles of the the drivers
@@ -1061,7 +1060,7 @@ out:
*
* Return: status code
*/
-static efi_status_t efi_get_drivers(struct efi_object *efiobj,
+static efi_status_t efi_get_drivers(efi_handle_t handle,
const efi_guid_t *protocol,
efi_uintn_t *number_of_drivers,
efi_handle_t **driver_handle_buffer)
@@ -1072,7 +1071,7 @@ static efi_status_t efi_get_drivers(struct efi_object *efiobj,
bool duplicate;
/* Count all driver associations */
- list_for_each_entry(handler, &efiobj->protocols, link) {
+ list_for_each_entry(handler, &handle->protocols, link) {
if (protocol && guidcmp(handler->guid, protocol))
continue;
list_for_each_entry(item, &handler->open_infos, link) {
@@ -1090,7 +1089,7 @@ static efi_status_t efi_get_drivers(struct efi_object *efiobj,
if (!*driver_handle_buffer)
return EFI_OUT_OF_RESOURCES;
/* Collect unique driver handles */
- list_for_each_entry(handler, &efiobj->protocols, link) {
+ list_for_each_entry(handler, &handle->protocols, link) {
if (protocol && guidcmp(handler->guid, protocol))
continue;
list_for_each_entry(item, &handler->open_infos, link) {
@@ -1117,7 +1116,7 @@ static efi_status_t efi_get_drivers(struct efi_object *efiobj,
/**
* efi_disconnect_all_drivers() - disconnect all drivers from a controller
- * @efiobj: handle of the controller
+ * @handle: handle of the controller
* @protocol: protocol GUID (optional)
* @child_handle: handle of the child to destroy
*
@@ -1128,16 +1127,16 @@ static efi_status_t efi_get_drivers(struct efi_object *efiobj,
*
* Return: status code
*/
-static efi_status_t efi_disconnect_all_drivers(
- struct efi_object *efiobj,
- const efi_guid_t *protocol,
- efi_handle_t child_handle)
+static efi_status_t efi_disconnect_all_drivers
+ (efi_handle_t handle,
+ const efi_guid_t *protocol,
+ efi_handle_t child_handle)
{
efi_uintn_t number_of_drivers;
efi_handle_t *driver_handle_buffer;
efi_status_t r, ret;
- ret = efi_get_drivers(efiobj, protocol, &number_of_drivers,
+ ret = efi_get_drivers(handle, protocol, &number_of_drivers,
&driver_handle_buffer);
if (ret != EFI_SUCCESS)
return ret;
@@ -1145,7 +1144,7 @@ static efi_status_t efi_disconnect_all_drivers(
ret = EFI_NOT_FOUND;
while (number_of_drivers) {
r = EFI_CALL(efi_disconnect_controller(
- efiobj->handle,
+ handle,
driver_handle_buffer[--number_of_drivers],
child_handle));
if (r == EFI_SUCCESS)
@@ -1240,7 +1239,7 @@ static efi_status_t EFIAPI efi_register_protocol_notify(
* @search_type: selection criterion
* @protocol: GUID of the protocol
* @search_key: registration key
- * @efiobj: handle
+ * @handle: handle
*
* See the documentation of the LocateHandle service in the UEFI specification.
*
@@ -1248,7 +1247,7 @@ static efi_status_t EFIAPI efi_register_protocol_notify(
*/
static int efi_search(enum efi_locate_search_type search_type,
const efi_guid_t *protocol, void *search_key,
- struct efi_object *efiobj)
+ efi_handle_t handle)
{
efi_status_t ret;
@@ -1259,7 +1258,7 @@ static int efi_search(enum efi_locate_search_type search_type,
/* TODO: RegisterProtocolNotify is not implemented yet */
return -1;
case BY_PROTOCOL:
- ret = efi_search_protocol(efiobj->handle, protocol, NULL);
+ ret = efi_search_protocol(handle, protocol, NULL);
return (ret != EFI_SUCCESS);
default:
/* Invalid search type */
@@ -1331,7 +1330,7 @@ static efi_status_t efi_locate_handle(
/* Then fill the array */
list_for_each_entry(efiobj, &efi_obj_list, link) {
if (!efi_search(search_type, protocol, search_key, efiobj))
- *buffer++ = efiobj->handle;
+ *buffer++ = efiobj;
}
return EFI_SUCCESS;
@@ -1506,7 +1505,7 @@ efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
* When asking for the device path interface, return
* bootefi_device_path
*/
- ret = efi_add_protocol(obj->parent.handle,
+ ret = efi_add_protocol(&obj->parent,
&efi_guid_device_path, device_path);
if (ret != EFI_SUCCESS)
goto failure;
@@ -1516,7 +1515,7 @@ efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
* When asking for the loaded_image interface, just
* return handle which points to loaded_image_info
*/
- ret = efi_add_protocol(obj->parent.handle,
+ ret = efi_add_protocol(&obj->parent,
&efi_guid_loaded_image, info);
if (ret != EFI_SUCCESS)
goto failure;
@@ -2176,7 +2175,7 @@ static efi_status_t EFIAPI efi_locate_protocol(const efi_guid_t *protocol,
efiobj = list_entry(lhandle, struct efi_object, link);
- ret = efi_search_protocol(efiobj->handle, protocol, &handler);
+ ret = efi_search_protocol(efiobj, protocol, &handler);
if (ret == EFI_SUCCESS) {
*protocol_interface = handler->protocol_interface;
return EFI_EXIT(EFI_SUCCESS);
diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c
index 7ecdbb1666..eb086bc219 100644
--- a/lib/efi_loader/efi_console.c
+++ b/lib/efi_loader/efi_console.c
@@ -1049,34 +1049,34 @@ static void EFIAPI efi_key_notify(struct efi_event *event, void *context)
int efi_console_register(void)
{
efi_status_t r;
- struct efi_object *efi_console_output_obj;
- struct efi_object *efi_console_input_obj;
+ efi_handle_t console_output_handle;
+ efi_handle_t console_input_handle;
/* Set up mode information */
query_console_size();
/* Create handles */
- r = efi_create_handle((efi_handle_t *)&efi_console_output_obj);
+ r = efi_create_handle(&console_output_handle);
if (r != EFI_SUCCESS)
goto out_of_memory;
- r = efi_add_protocol(efi_console_output_obj->handle,
+ r = efi_add_protocol(console_output_handle,
&efi_guid_text_output_protocol, &efi_con_out);
if (r != EFI_SUCCESS)
goto out_of_memory;
- systab.con_out_handle = efi_console_output_obj->handle;
- systab.stderr_handle = efi_console_output_obj->handle;
+ systab.con_out_handle = console_output_handle;
+ systab.stderr_handle = console_output_handle;
- r = efi_create_handle((efi_handle_t *)&efi_console_input_obj);
+ r = efi_create_handle(&console_input_handle);
if (r != EFI_SUCCESS)
goto out_of_memory;
- r = efi_add_protocol(efi_console_input_obj->handle,
+ r = efi_add_protocol(console_input_handle,
&efi_guid_text_input_protocol, &efi_con_in);
if (r != EFI_SUCCESS)
goto out_of_memory;
- systab.con_in_handle = efi_console_input_obj->handle;
- r = efi_add_protocol(efi_console_input_obj->handle,
+ systab.con_in_handle = console_input_handle;
+ r = efi_add_protocol(console_input_handle,
&efi_guid_text_input_ex_protocol, &efi_con_in_ex);
if (r != EFI_SUCCESS)
goto out_of_memory;
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index 46a24f7882..2b5d067104 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -150,7 +150,7 @@ static struct efi_object *find_obj(struct efi_device_path *dp, bool short_path,
struct efi_device_path *obj_dp;
efi_status_t ret;
- ret = efi_search_protocol(efiobj->handle,
+ ret = efi_search_protocol(efiobj,
&efi_guid_device_path, &handler);
if (ret != EFI_SUCCESS)
continue;
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
index 13fcc1b471..e861feee4a 100644
--- a/lib/efi_loader/efi_disk.c
+++ b/lib/efi_loader/efi_disk.c
@@ -258,18 +258,18 @@ static efi_status_t efi_disk_add_dev(
diskobj->dp = efi_dp_from_part(desc, part);
}
diskobj->part = part;
- ret = efi_add_protocol(diskobj->parent.handle, &efi_block_io_guid,
+ ret = efi_add_protocol(&diskobj->parent, &efi_block_io_guid,
&diskobj->ops);
if (ret != EFI_SUCCESS)
return ret;
- ret = efi_add_protocol(diskobj->parent.handle, &efi_guid_device_path,
+ ret = efi_add_protocol(&diskobj->parent, &efi_guid_device_path,
diskobj->dp);
if (ret != EFI_SUCCESS)
return ret;
if (part >= 1) {
diskobj->volume = efi_simple_file_system(desc, part,
diskobj->dp);
- ret = efi_add_protocol(diskobj->parent.handle,
+ ret = efi_add_protocol(&diskobj->parent,
&efi_simple_file_system_protocol_guid,
diskobj->volume);
if (ret != EFI_SUCCESS)
@@ -381,7 +381,7 @@ efi_status_t efi_disk_register(void)
/* Partitions show up as block devices in EFI */
disks += efi_disk_create_partitions(
- disk->parent.handle, desc, if_typename,
+ &disk->parent, desc, if_typename,
desc->devnum, dev->name);
}
#else
@@ -426,9 +426,9 @@ efi_status_t efi_disk_register(void)
disks++;
/* Partitions show up as block devices in EFI */
- disks += efi_disk_create_partitions(
- disk->parent.handle, desc,
- if_typename, i, devname);
+ disks += efi_disk_create_partitions
+ (&disk->parent, desc,
+ if_typename, i, devname);
}
}
#endif
diff --git a/lib/efi_loader/efi_gop.c b/lib/efi_loader/efi_gop.c
index a4aa9bcf61..a13c626f6f 100644
--- a/lib/efi_loader/efi_gop.c
+++ b/lib/efi_loader/efi_gop.c
@@ -442,7 +442,7 @@ efi_status_t efi_gop_register(void)
efi_add_handle(&gopobj->parent);
/* Fill in object data */
- ret = efi_add_protocol(gopobj->parent.handle, &efi_gop_guid,
+ ret = efi_add_protocol(&gopobj->parent, &efi_gop_guid,
&gopobj->ops);
if (ret != EFI_SUCCESS) {
printf("ERROR: Failure adding gop protocol\n");
diff --git a/lib/efi_loader/efi_net.c b/lib/efi_loader/efi_net.c
index 034d0d2ed0..d4b39b9e76 100644
--- a/lib/efi_loader/efi_net.c
+++ b/lib/efi_loader/efi_net.c
@@ -329,15 +329,15 @@ efi_status_t efi_net_register(void)
efi_add_handle(&netobj->parent);
/* Fill in object data */
- r = efi_add_protocol(netobj->parent.handle, &efi_net_guid,
+ r = efi_add_protocol(&netobj->parent, &efi_net_guid,
&netobj->net);
if (r != EFI_SUCCESS)
goto failure_to_add_protocol;
- r = efi_add_protocol(netobj->parent.handle, &efi_guid_device_path,
+ r = efi_add_protocol(&netobj->parent, &efi_guid_device_path,
efi_dp_from_eth());
if (r != EFI_SUCCESS)
goto failure_to_add_protocol;
- r = efi_add_protocol(netobj->parent.handle, &efi_pxe_guid,
+ r = efi_add_protocol(&netobj->parent, &efi_pxe_guid,
&netobj->pxe);
if (r != EFI_SUCCESS)
goto failure_to_add_protocol;
--
2.19.0
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