diff options
Diffstat (limited to 'include/dm')
| -rw-r--r-- | include/dm/device-internal.h | 2 | ||||
| -rw-r--r-- | include/dm/device.h | 97 | ||||
| -rw-r--r-- | include/dm/test.h | 28 | ||||
| -rw-r--r-- | include/dm/uclass-id.h | 11 | ||||
| -rw-r--r-- | include/dm/uclass-internal.h | 115 | ||||
| -rw-r--r-- | include/dm/uclass.h | 21 |
6 files changed, 237 insertions, 37 deletions
diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h index e2418fedb97..687462b0934 100644 --- a/include/dm/device-internal.h +++ b/include/dm/device-internal.h @@ -34,7 +34,7 @@ struct udevice; * @devp: Returns a pointer to the bound device * @return 0 if OK, -ve on error */ -int device_bind(struct udevice *parent, struct driver *drv, +int device_bind(struct udevice *parent, const struct driver *drv, const char *name, void *platdata, int of_offset, struct udevice **devp); diff --git a/include/dm/device.h b/include/dm/device.h index 7a48eb88b8c..18296bb6861 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -30,6 +30,12 @@ struct driver_info; /* DM is responsible for allocating and freeing parent_platdata */ #define DM_FLAG_ALLOC_PARENT_PDATA (1 << 3) +/* DM is responsible for allocating and freeing uclass_platdata */ +#define DM_FLAG_ALLOC_UCLASS_PDATA (1 << 4) + +/* Allocate driver private data on a DMA boundary */ +#define DM_FLAG_ALLOC_PRIV_DMA (1 << 5) + /** * struct udevice - An instance of a driver * @@ -51,8 +57,10 @@ struct driver_info; * @name: Name of device, typically the FDT node name * @platdata: Configuration data for this device * @parent_platdata: The parent bus's configuration data for this device + * @uclass_platdata: The uclass's configuration data for this device * @of_offset: Device tree node offset for this device (- for none) - * @of_id: Pointer to the udevice_id structure which created the device + * @driver_data: Driver data word for the entry that matched this device with + * its driver * @parent: Parent of this device, or NULL for the top level device * @priv: Private data for this device * @uclass: Pointer to uclass for this device @@ -67,12 +75,13 @@ struct driver_info; * when the device is probed and will be unique within the device's uclass. */ struct udevice { - struct driver *driver; + const struct driver *driver; const char *name; void *platdata; void *parent_platdata; + void *uclass_platdata; int of_offset; - const struct udevice_id *of_id; + ulong driver_data; struct udevice *parent; void *priv; struct uclass *uclass; @@ -206,6 +215,16 @@ void *dev_get_platdata(struct udevice *dev); void *dev_get_parent_platdata(struct udevice *dev); /** + * dev_get_uclass_platdata() - Get the uclass platform data for a device + * + * This checks that dev is not NULL, but no other checks for now + * + * @dev Device to check + * @return uclass's platform data, or NULL if none + */ +void *dev_get_uclass_platdata(struct udevice *dev); + +/** * dev_get_parentdata() - Get the parent data for a device * * The parent data is data stored in the device but owned by the parent. @@ -238,13 +257,39 @@ void *dev_get_priv(struct udevice *dev); struct udevice *dev_get_parent(struct udevice *child); /** - * dev_get_of_data() - get the device tree data used to bind a device + * dev_get_uclass_priv() - Get the private uclass data for a device + * + * This checks that dev is not NULL, but no other checks for now + * + * @dev Device to check + * @return private uclass data for this device, or NULL if none + */ +void *dev_get_uclass_priv(struct udevice *dev); + +/** + * dev_get_driver_data() - get the driver data used to bind a device * * When a device is bound using a device tree node, it matches a * particular compatible string as in struct udevice_id. This function - * returns the associated data value for that compatible string + * returns the associated data value for that compatible string. This is + * the 'data' field in struct udevice_id. + * + * For USB devices, this is the driver_info field in struct usb_device_id. + * + * @dev: Device to check */ -ulong dev_get_of_data(struct udevice *dev); +ulong dev_get_driver_data(struct udevice *dev); + +/** + * dev_get_driver_ops() - get the device's driver's operations + * + * This checks that dev is not NULL, and returns the pointer to device's + * driver's operations. + * + * @dev: Device to check + * @return void pointer to driver's operations or NULL for NULL-dev or NULL-ops + */ +const void *dev_get_driver_ops(struct udevice *dev); /* * device_get_uclass_id() - return the uclass ID of a device @@ -254,6 +299,16 @@ ulong dev_get_of_data(struct udevice *dev); */ enum uclass_id device_get_uclass_id(struct udevice *dev); +/* + * dev_get_uclass_name() - return the uclass name of a device + * + * This checks that dev is not NULL. + * + * @dev: Device to check + * @return pointer to the uclass name for the device + */ +const char *dev_get_uclass_name(struct udevice *dev); + /** * device_get_child() - Get the child of a device by index * @@ -361,4 +416,34 @@ int device_find_next_child(struct udevice **devp); */ fdt_addr_t dev_get_addr(struct udevice *dev); +/** + * device_has_children() - check if a device has any children + * + * @dev: Device to check + * @return true if the device has one or more children + */ +bool device_has_children(struct udevice *dev); + +/** + * device_has_active_children() - check if a device has any active children + * + * @dev: Device to check + * @return true if the device has one or more children and at least one of + * them is active (probed). + */ +bool device_has_active_children(struct udevice *dev); + +/** + * device_is_last_sibling() - check if a device is the last sibling + * + * This function can be useful for display purposes, when special action needs + * to be taken when displaying the last sibling. This can happen when a tree + * view of devices is being displayed. + * + * @dev: Device to check + * @return true if there are no more siblings after this one - i.e. is it + * last in the list. + */ +bool device_is_last_sibling(struct udevice *dev); + #endif diff --git a/include/dm/test.h b/include/dm/test.h index 707c69e07f0..f03fbcb1cdc 100644 --- a/include/dm/test.h +++ b/include/dm/test.h @@ -44,6 +44,7 @@ enum { /* For uclass */ DM_TEST_OP_POST_BIND, DM_TEST_OP_PRE_UNBIND, + DM_TEST_OP_PRE_PROBE, DM_TEST_OP_POST_PROBE, DM_TEST_OP_PRE_REMOVE, DM_TEST_OP_INIT, @@ -97,6 +98,26 @@ struct dm_test_parent_data { int flag; }; +/* Test values for test device's uclass platform data */ +enum { + TEST_UC_PDATA_INTVAL1 = 2, + TEST_UC_PDATA_INTVAL2 = 334, + TEST_UC_PDATA_INTVAL3 = 789452, +}; + +/** + * struct dm_test_uclass_platda - uclass's information on each device + * + * @intval1: set to TEST_UC_PDATA_INTVAL1 in .post_bind method of test uclass + * @intval2: set to TEST_UC_PDATA_INTVAL2 in .post_bind method of test uclass + * @intval3: set to TEST_UC_PDATA_INTVAL3 in .post_bind method of test uclass + */ +struct dm_test_perdev_uc_pdata { + int intval1; + int intval2; + int intval3; +}; + /* * Operation counts for the test driver, used to check that each method is * called correctly @@ -204,12 +225,13 @@ void dm_leak_check_start(struct dm_test_state *dms); /** - * dm_test_main() - Run all the tests + * dm_test_main() - Run all or one of the tests * - * This runs all available driver model tests + * This runs all available driver model tests, or a selected one * + * @test_name: Name of test to run, or NULL for all * @return 0 if OK, -ve on error */ -int dm_test_main(void); +int dm_test_main(const char *test_name); #endif diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 91bb90dcfb3..fddfd35f1fb 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -20,6 +20,8 @@ enum uclass_id { UCLASS_TEST_BUS, UCLASS_SPI_EMUL, /* sandbox SPI device emulator */ UCLASS_I2C_EMUL, /* sandbox I2C device emulator */ + UCLASS_PCI_EMUL, /* sandbox PCI device emulator */ + UCLASS_USB_EMUL, /* sandbox USB bus device emulator */ UCLASS_SIMPLE_BUS, /* U-Boot uclasses start here */ @@ -34,6 +36,15 @@ enum uclass_id { UCLASS_I2C_GENERIC, /* Generic I2C device */ UCLASS_I2C_EEPROM, /* I2C EEPROM device */ UCLASS_MOD_EXP, /* RSA Mod Exp device */ + UCLASS_PCI, /* PCI bus */ + UCLASS_PCI_GENERIC, /* Generic PCI bus device */ + UCLASS_PCH, /* x86 platform controller hub */ + UCLASS_ETH, /* Ethernet device */ + UCLASS_LPC, /* x86 'low pin count' interface */ + UCLASS_USB, /* USB bus */ + UCLASS_USB_HUB, /* USB hub */ + UCLASS_USB_DEV_GENERIC, /* USB generic device */ + UCLASS_MASS_STORAGE, /* Mass storage device */ UCLASS_COUNT, UCLASS_INVALID = -1, diff --git a/include/dm/uclass-internal.h b/include/dm/uclass-internal.h index f2f254a8259..9b685086671 100644 --- a/include/dm/uclass-internal.h +++ b/include/dm/uclass-internal.h @@ -11,12 +11,25 @@ #define _DM_UCLASS_INTERNAL_H /** + * uclass_get_device_tail() - handle the end of a get_device call + * + * This handles returning an error or probing a device as needed. + * + * @dev: Device that needs to be probed + * @ret: Error to return. If non-zero then the device is not probed + * @devp: Returns the value of 'dev' if there is no error + * @return ret, if non-zero, else the result of the device_probe() call + */ +int uclass_get_device_tail(struct udevice *dev, int ret, struct udevice **devp); + +/** * uclass_find_device() - Return n-th child of uclass * @id: Id number of the uclass * @index: Position of the child in uclass's list * #devp: Returns pointer to device, or NULL on error * - * The device is not prepared for use - this is an internal function + * The device is not prepared for use - this is an internal function. + * The function uclass_get_device_tail() can be used to probe the device. * * @return the uclass pointer of a child at the given index or * return NULL on error. @@ -24,6 +37,68 @@ int uclass_find_device(enum uclass_id id, int index, struct udevice **devp); /** + * uclass_find_first_device() - Return the first device in a uclass + * @id: Id number of the uclass + * #devp: Returns pointer to device, or NULL on error + * + * The device is not prepared for use - this is an internal function. + * The function uclass_get_device_tail() can be used to probe the device. + * + * @return 0 if OK (found or not found), -1 on error + */ +int uclass_find_first_device(enum uclass_id id, struct udevice **devp); + +/** + * uclass_find_next_device() - Return the next device in a uclass + * @devp: On entry, pointer to device to lookup. On exit, returns pointer + * to the next device in the same uclass, or NULL if none + * + * The device is not prepared for use - this is an internal function. + * The function uclass_get_device_tail() can be used to probe the device. + * + * @return 0 if OK (found or not found), -1 on error + */ +int uclass_find_next_device(struct udevice **devp); + +/** + * uclass_find_device_by_name() - Find uclass device based on ID and name + * + * This searches for a device with the exactly given name. + * + * The device is NOT probed, it is merely returned. + * + * @id: ID to look up + * @name: name of a device to find + * @devp: Returns pointer to device (the first one with the name) + * @return 0 if OK, -ve on error + */ +int uclass_find_device_by_name(enum uclass_id id, const char *name, + struct udevice **devp); + +/** + * uclass_find_device_by_seq() - Find uclass device based on ID and sequence + * + * This searches for a device with the given seq or req_seq. + * + * For seq, if an active device has this sequence it will be returned. + * If there is no such device then this will return -ENODEV. + * + * For req_seq, if a device (whether activated or not) has this req_seq + * value, that device will be returned. This is a strong indication that + * the device will receive that sequence when activated. + * + * The device is NOT probed, it is merely returned. + * + * @id: ID to look up + * @seq_or_req_seq: Sequence number to find (0=first) + * @find_req_seq: true to find req_seq, false to find seq + * @devp: Returns pointer to device (there is only one per for each seq) + * @return 0 if OK, -ve on error + */ +int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq, + bool find_req_seq, struct udevice **devp); + +/** * uclass_bind_device() - Associate device with a uclass * * Connect the device into uclass's list of devices. @@ -41,18 +116,23 @@ int uclass_bind_device(struct udevice *dev); * @dev: Pointer to the device * #return 0 on success, -ve on error */ +#ifdef CONFIG_DM_DEVICE_REMOVE int uclass_unbind_device(struct udevice *dev); +#else +static inline int uclass_unbind_device(struct udevice *dev) { return 0; } +#endif /** - * uclass_pre_probe_child() - Deal with a child that is about to be probed + * uclass_pre_probe_device() - Deal with a device that is about to be probed * * Perform any pre-processing that is needed by the uclass before it can be - * probed. + * probed. This includes the uclass' pre-probe() method and the parent + * uclass' child_pre_probe() method. * * @dev: Pointer to the device * #return 0 on success, -ve on error */ -int uclass_pre_probe_child(struct udevice *dev); +int uclass_pre_probe_device(struct udevice *dev); /** * uclass_post_probe_device() - Deal with a device that has just been probed @@ -73,7 +153,11 @@ int uclass_post_probe_device(struct udevice *dev); * @dev: Pointer to the device * #return 0 on success, -ve on error */ +#ifdef CONFIG_DM_DEVICE_REMOVE int uclass_pre_remove_device(struct udevice *dev); +#else +static inline int uclass_pre_remove_device(struct udevice *dev) { return 0; } +#endif /** * uclass_find() - Find uclass by its id @@ -93,27 +177,4 @@ struct uclass *uclass_find(enum uclass_id key); */ int uclass_destroy(struct uclass *uc); -/** - * uclass_find_device_by_seq() - Find uclass device based on ID and sequence - * - * This searches for a device with the given seq or req_seq. - * - * For seq, if an active device has this sequence it will be returned. - * If there is no such device then this will return -ENODEV. - * - * For req_seq, if a device (whether activated or not) has this req_seq - * value, that device will be returned. This is a strong indication that - * the device will receive that sequence when activated. - * - * The device is NOT probed, it is merely returned. - * - * @id: ID to look up - * @seq_or_req_seq: Sequence number to find (0=first) - * @find_req_seq: true to find req_seq, false to find seq - * @devp: Returns pointer to device (there is only one per for each seq) - * @return 0 if OK, -ve on error - */ -int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq, - bool find_req_seq, struct udevice **devp); - #endif diff --git a/include/dm/uclass.h b/include/dm/uclass.h index d6c40c60dda..4cfc0df84c2 100644 --- a/include/dm/uclass.h +++ b/include/dm/uclass.h @@ -53,6 +53,7 @@ struct udevice; * @id: ID number of this uclass * @post_bind: Called after a new device is bound to this uclass * @pre_unbind: Called before a device is unbound from this uclass + * @pre_probe: Called before a new device is probed * @post_probe: Called after a new device is probed * @pre_remove: Called before a device is removed * @child_post_bind: Called after a child is bound to a device in this uclass @@ -64,6 +65,9 @@ struct udevice; * @per_device_auto_alloc_size: Each device can hold private data owned * by the uclass. If required this will be automatically allocated if this * value is non-zero. + * @per_device_platdata_auto_alloc_size: Each device can hold platform data + * owned by the uclass as 'dev->uclass_platdata'. If the value is non-zero, + * then this will be automatically allocated. * @per_child_auto_alloc_size: Each child device (of a parent in this * uclass) can hold parent data for the device/uclass. This value is only * used as a falback if this member is 0 in the driver. @@ -80,6 +84,7 @@ struct uclass_driver { enum uclass_id id; int (*post_bind)(struct udevice *dev); int (*pre_unbind)(struct udevice *dev); + int (*pre_probe)(struct udevice *dev); int (*post_probe)(struct udevice *dev); int (*pre_remove)(struct udevice *dev); int (*child_post_bind)(struct udevice *dev); @@ -88,6 +93,7 @@ struct uclass_driver { int (*destroy)(struct uclass *class); int priv_auto_alloc_size; int per_device_auto_alloc_size; + int per_device_platdata_auto_alloc_size; int per_child_auto_alloc_size; int per_child_platdata_auto_alloc_size; const void *ops; @@ -124,6 +130,21 @@ int uclass_get(enum uclass_id key, struct uclass **ucp); int uclass_get_device(enum uclass_id id, int index, struct udevice **devp); /** + * uclass_get_device_by_name() - Get a uclass device by it's name + * + * This searches the devices in the uclass for one with the exactly given name. + * + * The device is probed to activate it ready for use. + * + * @id: ID to look up + * @name: name of a device to get + * @devp: Returns pointer to device (the first one with the name) + * @return 0 if OK, -ve on error + */ +int uclass_get_device_by_name(enum uclass_id id, const char *name, + struct udevice **devp); + +/** * uclass_get_device_by_seq() - Get a uclass device based on an ID and sequence * * If an active device has this sequence it will be returned. If there is no |