On Wed, Sep 14, 2022 at 09:45:47AM +0200, Heinrich Schuchardt wrote:
On 9/14/22 04:08, AKASHI Takahiro wrote:
On Tue, Sep 13, 2022 at 06:27:37PM +0200, Heinrich Schuchardt wrote:
On 8/12/22 03:35, Simon Glass wrote:
Use the uclass ID instead.
Signed-off-by: Simon Glass sjg@chromium.org
(no changes since v1)
cmd/blk_common.c | 2 +- drivers/block/blk-uclass.c | 34 +++++++++++++++---------------- drivers/block/blk_legacy.c | 20 +++++++++---------- include/blk.h | 41 ++++++++++++++++++-------------------- include/efi_loader.h | 2 +- 5 files changed, 48 insertions(+), 51 deletions(-)
diff --git a/cmd/blk_common.c b/cmd/blk_common.c index 4e442f2918b..369c5ae4bbe 100644 --- a/cmd/blk_common.c +++ b/cmd/blk_common.c @@ -12,7 +12,7 @@ #include <blk.h> #include <command.h>
-int blk_common_cmd(int argc, char *const argv[], enum if_type if_type, +int blk_common_cmd(int argc, char *const argv[], enum uclass_id if_type, int *cur_devnump) { const char *if_name = blk_get_if_type_name(if_type); diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c index 436af764f91..a9a85aa37f3 100644 --- a/drivers/block/blk-uclass.c +++ b/drivers/block/blk-uclass.c @@ -34,7 +34,7 @@ static struct { { UCLASS_PVBLOCK, "pvblock" }, };
-static enum if_type if_typename_to_iftype(const char *if_typename) +static enum uclass_id if_typename_to_iftype(const char *if_typename) { int i;
@@ -46,7 +46,7 @@ static enum if_type if_typename_to_iftype(const char *if_typename) return UCLASS_INVALID; }
-static enum uclass_id if_type_to_uclass_id(enum if_type if_type) +static enum uclass_id if_type_to_uclass_id(enum uclass_id if_type) { /* * This strange adjustment is used because we use UCLASS_MASS_STORAGE @@ -71,7 +71,7 @@ static enum uclass_id if_type_to_uclass_id(enum if_type if_type) return if_type; }
-const char *blk_get_if_type_name(enum if_type if_type) +const char *blk_get_if_type_name(enum uclass_id if_type) { int i;
@@ -83,7 +83,7 @@ const char *blk_get_if_type_name(enum if_type if_type) return "(none)"; }
-struct blk_desc *blk_get_devnum_by_type(enum if_type if_type, int devnum) +struct blk_desc *blk_get_devnum_by_type(enum uclass_id if_type, int devnum) { struct blk_desc *desc; struct udevice *dev; @@ -105,7 +105,7 @@ struct blk_desc *blk_get_devnum_by_type(enum if_type if_type, int devnum) struct blk_desc *blk_get_devnum_by_typename(const char *if_typename, int devnum) { enum uclass_id uclass_id;
- enum if_type type;
- enum uclass_id type; struct udevice *dev; struct uclass *uc; int ret;
@@ -185,7 +185,7 @@ struct blk_desc *blk_get_by_device(struct udevice *dev) * with a higher device number, -ENOENT if there is no such device but there * is one with a higher number, or other -ve on other error. */ -static int get_desc(enum if_type if_type, int devnum, struct blk_desc **descp) +static int get_desc(enum uclass_id if_type, int devnum, struct blk_desc **descp) { bool found_more = false; struct udevice *dev; @@ -218,7 +218,7 @@ static int get_desc(enum if_type if_type, int devnum, struct blk_desc **descp) return found_more ? -ENOENT : -ENODEV; }
-int blk_select_hwpart_devnum(enum if_type if_type, int devnum, int hwpart) +int blk_select_hwpart_devnum(enum uclass_id if_type, int devnum, int hwpart) { struct udevice *dev; int ret; @@ -230,7 +230,7 @@ int blk_select_hwpart_devnum(enum if_type if_type, int devnum, int hwpart) return blk_select_hwpart(dev, hwpart); }
-int blk_list_part(enum if_type if_type) +int blk_list_part(enum uclass_id if_type) { struct blk_desc *desc; int devnum, ok; @@ -255,7 +255,7 @@ int blk_list_part(enum if_type if_type) return 0; }
-int blk_print_part_devnum(enum if_type if_type, int devnum) +int blk_print_part_devnum(enum uclass_id if_type, int devnum) { struct blk_desc *desc; int ret; @@ -270,7 +270,7 @@ int blk_print_part_devnum(enum if_type if_type, int devnum) return 0; }
-void blk_list_devices(enum if_type if_type) +void blk_list_devices(enum uclass_id if_type) { struct blk_desc *desc; int ret; @@ -289,7 +289,7 @@ void blk_list_devices(enum if_type if_type) } }
-int blk_print_device_num(enum if_type if_type, int devnum) +int blk_print_device_num(enum uclass_id if_type, int devnum) { struct blk_desc *desc; int ret; @@ -303,7 +303,7 @@ int blk_print_device_num(enum if_type if_type, int devnum) return 0; }
-int blk_show_device(enum if_type if_type, int devnum) +int blk_show_device(enum uclass_id if_type, int devnum) { struct blk_desc *desc; int ret; @@ -324,7 +324,7 @@ int blk_show_device(enum if_type if_type, int devnum) return 0; }
-ulong blk_read_devnum(enum if_type if_type, int devnum, lbaint_t start, +ulong blk_read_devnum(enum uclass_id if_type, int devnum, lbaint_t start, lbaint_t blkcnt, void *buffer) { struct blk_desc *desc; @@ -341,7 +341,7 @@ ulong blk_read_devnum(enum if_type if_type, int devnum, lbaint_t start, return n; }
-ulong blk_write_devnum(enum if_type if_type, int devnum, lbaint_t start, +ulong blk_write_devnum(enum uclass_id if_type, int devnum, lbaint_t start, lbaint_t blkcnt, const void *buffer) { struct blk_desc *desc; @@ -525,7 +525,7 @@ const char *blk_get_devtype(struct udevice *dev) return uclass_get_name(device_get_uclass_id(parent)); };
-int blk_find_max_devnum(enum if_type if_type) +int blk_find_max_devnum(enum uclass_id if_type) { struct udevice *dev; int max_devnum = -ENODEV; @@ -545,7 +545,7 @@ int blk_find_max_devnum(enum if_type if_type) return max_devnum; }
-int blk_next_free_devnum(enum if_type if_type) +int blk_next_free_devnum(enum uclass_id if_type) { int ret;
@@ -631,7 +631,7 @@ int blk_count_devices(enum blk_flag_t flag) return count; }
-static int blk_claim_devnum(enum if_type if_type, int devnum) +static int blk_claim_devnum(enum uclass_id if_type, int devnum) { struct udevice *dev; struct uclass *uc; diff --git a/drivers/block/blk_legacy.c b/drivers/block/blk_legacy.c index bd8a17df6a9..8c6f9cb208e 100644 --- a/drivers/block/blk_legacy.c +++ b/drivers/block/blk_legacy.c @@ -39,7 +39,7 @@ static struct blk_driver *blk_driver_lookup_typename(const char *if_typename) return NULL; }
-const char *blk_get_if_type_name(enum if_type if_type) +const char *blk_get_if_type_name(enum uclass_id if_type) { struct blk_driver *drv = blk_driver_lookup_type(if_type);
@@ -70,7 +70,7 @@ static int get_desc(struct blk_driver *drv, int devnum, struct blk_desc **descp) return drv->get_dev(devnum, descp); }
-int blk_list_part(enum if_type if_type) +int blk_list_part(enum uclass_id if_type) { struct blk_driver *drv; struct blk_desc *desc; @@ -97,7 +97,7 @@ int blk_list_part(enum if_type if_type) return 0; }
-int blk_print_part_devnum(enum if_type if_type, int devnum) +int blk_print_part_devnum(enum uclass_id if_type, int devnum) { struct blk_driver *drv = blk_driver_lookup_type(if_type); struct blk_desc *desc; @@ -115,7 +115,7 @@ int blk_print_part_devnum(enum if_type if_type, int devnum) return 0; }
-void blk_list_devices(enum if_type if_type) +void blk_list_devices(enum uclass_id if_type) { struct blk_driver *drv = blk_driver_lookup_type(if_type); struct blk_desc *desc; @@ -133,7 +133,7 @@ void blk_list_devices(enum if_type if_type) } }
-int blk_print_device_num(enum if_type if_type, int devnum) +int blk_print_device_num(enum uclass_id if_type, int devnum) { struct blk_driver *drv = blk_driver_lookup_type(if_type); struct blk_desc *desc; @@ -150,7 +150,7 @@ int blk_print_device_num(enum if_type if_type, int devnum) return 0; }
-int blk_show_device(enum if_type if_type, int devnum) +int blk_show_device(enum uclass_id if_type, int devnum) { struct blk_driver *drv = blk_driver_lookup_type(if_type); struct blk_desc *desc; @@ -174,7 +174,7 @@ int blk_show_device(enum if_type if_type, int devnum) return 0; }
-struct blk_desc *blk_get_devnum_by_type(enum if_type if_type, int devnum) +struct blk_desc *blk_get_devnum_by_type(enum uclass_id if_type, int devnum) { struct blk_driver *drv = blk_driver_lookup_type(if_type); struct blk_desc *desc; @@ -214,7 +214,7 @@ struct blk_desc *blk_get_devnum_by_typename(const char *if_typename, int devnum) return desc; }
-ulong blk_read_devnum(enum if_type if_type, int devnum, lbaint_t start, +ulong blk_read_devnum(enum uclass_id if_type, int devnum, lbaint_t start, lbaint_t blkcnt, void *buffer) { struct blk_driver *drv = blk_driver_lookup_type(if_type); @@ -234,7 +234,7 @@ ulong blk_read_devnum(enum if_type if_type, int devnum, lbaint_t start, return n; }
-ulong blk_write_devnum(enum if_type if_type, int devnum, lbaint_t start, +ulong blk_write_devnum(enum uclass_id if_type, int devnum, lbaint_t start, lbaint_t blkcnt, const void *buffer) { struct blk_driver *drv = blk_driver_lookup_type(if_type); @@ -249,7 +249,7 @@ ulong blk_write_devnum(enum if_type if_type, int devnum, lbaint_t start, return desc->block_write(desc, start, blkcnt, buffer); }
-int blk_select_hwpart_devnum(enum if_type if_type, int devnum, int hwpart) +int blk_select_hwpart_devnum(enum uclass_id if_type, int devnum, int hwpart) { struct blk_driver *drv = blk_driver_lookup_type(if_type); struct blk_desc *desc; diff --git a/include/blk.h b/include/blk.h index 548cd09d6bb..279f9ea4a9d 100644 --- a/include/blk.h +++ b/include/blk.h @@ -27,9 +27,6 @@ static inline bool blk_enabled(void) return CONFIG_IS_ENABLED(BLK) || IS_ENABLED(CONFIG_SPL_LEGACY_BLOCK); }
-/* Interface types: */ -#define if_type uclass_id
- #define BLK_VEN_SIZE 40 #define BLK_PRD_SIZE 20 #define BLK_REV_SIZE 8
@@ -57,7 +54,7 @@ struct blk_desc { * TODO: With driver model we should be able to use the parent * device's uclass instead. */
- enum if_type if_type; /* type of the interface */
- enum uclass_id if_type; /* type of the interface */ int devnum; /* device number */ unsigned char part_type; /* partition type */ unsigned char target; /* target SCSI ID */
@@ -282,7 +279,7 @@ unsigned long blk_derase(struct blk_desc *block_dev, lbaint_t start, * This function does not activate the device. The device will be returned * whether or not it is activated. *
- @if_type: Interface type (enum if_type_t)
- @if_type: Interface type (enum uclass_id_t)
- @devnum: Device number (specific to each interface type)
- @devp: the device, if found
- Return: 0 if found, -ENODEV if no device found, or other -ve error value
@@ -292,7 +289,7 @@ int blk_find_device(int if_type, int devnum, struct udevice **devp); /** * blk_get_device() - Find and probe a block device ready for use *
- @if_type: Interface type (enum if_type_t)
- @if_type: Interface type (enum uclass_id_t)
- @devnum: Device number (specific to each interface type)
- @devp: the device, if found
- Return: 0 if found, -ENODEV if no device found, or other -ve error value
@@ -330,7 +327,7 @@ int blk_next_device(struct udevice **devp); * @parent: Parent of the new device * @drv_name: Driver name to use for the block device * @name: Name for the device
- @if_type: Interface type (enum if_type_t)
- @if_type: Interface type (enum uclass_id_t)
- @devnum: Device number, specific to the interface type, or -1 to
allocate the next available number- @blksz: Block size of the device in bytes (typically 512)
@@ -347,7 +344,7 @@ int blk_create_device(struct udevice *parent, const char *drv_name, * @parent: Parent of the new device * @drv_name: Driver name to use for the block device * @name: Name for the device (parent name is prepended)
- @if_type: Interface type (enum if_type_t)
- @if_type: Interface type (enum uclass_id_t)
- @devnum: Device number, specific to the interface type, or -1 to
allocate the next available number- @blksz: Block size of the device in bytes (typically 512)
@@ -390,7 +387,7 @@ int blk_unbind_all(int if_type); * Return: maximum device number found, or -ENODEV if none, or other -ve on * error */ -int blk_find_max_devnum(enum if_type if_type); +int blk_find_max_devnum(enum uclass_id if_type);
/** * blk_next_free_devnum() - get the next device number for an interface type @@ -401,7 +398,7 @@ int blk_find_max_devnum(enum if_type if_type); * @if_type: Interface type to scan * Return: next device number safe to use, or -ve on error */ -int blk_next_free_devnum(enum if_type if_type); +int blk_next_free_devnum(enum uclass_id if_type);
/** * blk_select_hwpart() - select a hardware partition @@ -496,7 +493,7 @@ static inline ulong blk_derase(struct blk_desc *block_dev, lbaint_t start, */ struct blk_driver { const char *if_typename;
- enum if_type if_type;
- enum uclass_id if_type; int max_devs; struct blk_desc *desc; /**
@@ -557,7 +554,7 @@ struct blk_driver *blk_driver_lookup_type(int if_type); * @devnum: Device number * Return: point to block device descriptor, or NULL if not found */ -struct blk_desc *blk_get_devnum_by_type(enum if_type if_type, int devnum); +struct blk_desc *blk_get_devnum_by_type(enum uclass_id if_type, int devnum);
/** * blk_get_devnum_by_type() - Get a block device by type name, and number @@ -594,7 +591,7 @@ int blk_dselect_hwpart(struct blk_desc *desc, int hwpart); * @if_type: Block device type * Return: 0 if OK, -ENODEV if there is none of that type */ -int blk_list_part(enum if_type if_type); +int blk_list_part(enum uclass_id if_type);
/** * blk_list_devices() - list the block devices of a given type @@ -604,7 +601,7 @@ int blk_list_part(enum if_type if_type); * * @if_type: Block device type */ -void blk_list_devices(enum if_type if_type); +void blk_list_devices(enum uclass_id if_type);
/** * blk_show_device() - show information about a given block device @@ -615,7 +612,7 @@ void blk_list_devices(enum if_type if_type); * @devnum: Device number * Return: 0 if OK, -ENODEV for invalid device number */ -int blk_show_device(enum if_type if_type, int devnum); +int blk_show_device(enum uclass_id if_type, int devnum);
/** * blk_print_device_num() - show information about a given block device @@ -628,7 +625,7 @@ int blk_show_device(enum if_type if_type, int devnum); * Return: 0 if OK, -ENODEV for invalid device number, -ENOENT if the block * device is not connected */ -int blk_print_device_num(enum if_type if_type, int devnum); +int blk_print_device_num(enum uclass_id if_type, int devnum);
/** * blk_print_part_devnum() - print the partition information for a device @@ -638,7 +635,7 @@ int blk_print_device_num(enum if_type if_type, int devnum); * Return: 0 if OK, -ENOENT if the block device is not connected, -ENOSYS if * the interface type is not supported, other -ve on other error */ -int blk_print_part_devnum(enum if_type if_type, int devnum); +int blk_print_part_devnum(enum uclass_id if_type, int devnum);
/** * blk_read_devnum() - read blocks from a device @@ -649,7 +646,7 @@ int blk_print_part_devnum(enum if_type if_type, int devnum); * @buffer: Address to write data to * Return: number of blocks read, or -ve error number on error */ -ulong blk_read_devnum(enum if_type if_type, int devnum, lbaint_t start, +ulong blk_read_devnum(enum uclass_id if_type, int devnum, lbaint_t start, lbaint_t blkcnt, void *buffer);
/** @@ -661,7 +658,7 @@ ulong blk_read_devnum(enum if_type if_type, int devnum, lbaint_t start, * @buffer: Address to read data from * Return: number of blocks written, or -ve error number on error */ -ulong blk_write_devnum(enum if_type if_type, int devnum, lbaint_t start, +ulong blk_write_devnum(enum uclass_id if_type, int devnum, lbaint_t start, lbaint_t blkcnt, const void *buffer);
/** @@ -675,7 +672,7 @@ ulong blk_write_devnum(enum if_type if_type, int devnum, lbaint_t start, * @hwpart: Partition number to select * Return: 0 if OK, -ve on error */ -int blk_select_hwpart_devnum(enum if_type if_type, int devnum, int hwpart); +int blk_select_hwpart_devnum(enum uclass_id if_type, int devnum, int hwpart);
/** * blk_get_if_type_name() - Get the name of an interface type @@ -683,7 +680,7 @@ int blk_select_hwpart_devnum(enum if_type if_type, int devnum, int hwpart); * @if_type: Interface type to check * Return: name of interface, or NULL if none */ -const char *blk_get_if_type_name(enum if_type if_type); +const char *blk_get_if_type_name(enum uclass_id if_type);
/** * blk_common_cmd() - handle common commands with block devices @@ -694,7 +691,7 @@ const char *blk_get_if_type_name(enum if_type if_type); * @cur_devnump: Current device number for this interface type * Return: 0 if OK, CMD_RET_ERROR on error */ -int blk_common_cmd(int argc, char *const argv[], enum if_type if_type, +int blk_common_cmd(int argc, char *const argv[], enum uclass_id if_type, int *cur_devnump);
enum blk_flag_t { diff --git a/include/efi_loader.h b/include/efi_loader.h index 3a63a1f75fd..ae58efb0036 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -156,7 +156,7 @@ extern bool efi_st_keep_devices;
/* EFI system partition */ extern struct efi_system_partition {
- enum if_type if_type;
- enum uclass_id if_type; int devnum;
Please, rename the field if_type to class_id in a later patch.
Uclass ID and device number may refer to a different device after commands like usb init. It would be better if we could use the partition GUID to identify a partition in the long term. But that is beyond the scope of this series.
Well, as far as UEFI is concerned, we should use a device path (and/or a handle to it) to uniquely identify a given device.
The address pointed to by a handle or struct udevice * maybe reused after deleting the handle or device. This is why I mentioned the partition GUID.
1) With a device path, you can find a corresponding handle dynamically by using efi_dp_find_obj().
2) With a handle, you can maintain (update) it by using EVT_DM_POST_PROBE/REMOVE hooks as "efi_system_partition" variable is in efi_disk_add_dev().
So both approaches are very much feasible, not depending directly on the underlying U-Boot representation.
-Takahiro Akashi
A device path for a partition contains the partition GUID, see UEFI spec 2.10, 10.3.5.1 Hard Drive.
Regards
Heinrich
Then the whole code in efi_var_file.c can be rewritten by using SIMPLE_FILE_SYSTEM_PROTOCOL attached to it.
-Takahiro Akashi
Acked-by: Heinrich Schuchardt xypron.glpk@gmx.de
u8 part;} efi_system_partition;