#include <sys/cdefs.h>
#include "opt_bus.h"
#include "opt_ddb.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/domainset.h>
#include <sys/eventhandler.h>
#include <sys/filio.h>
#include <sys/lock.h>
#include <sys/kernel.h>
#include <sys/kobj.h>
#include <sys/limits.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/poll.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/condvar.h>
#include <sys/queue.h>
#include <machine/bus.h>
#include <sys/random.h>
#include <sys/refcount.h>
#include <sys/rman.h>
#include <sys/sbuf.h>
#include <sys/selinfo.h>
#include <sys/signalvar.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <sys/bus.h>
#include <sys/cpuset.h>
#include <net/vnet.h>
#include <machine/cpu.h>
#include <machine/stdarg.h>
#include <vm/uma.h>
#include <vm/vm.h>
#include <ddb/ddb.h>

Include dependency graph for subr_bus.c:

Data Structures
struct	driverlink

struct	_device
	Implementation of _device. More...

struct	dev_event_info

struct	dev_softc

struct	device_location_node

Macros
#define	DL_DEFERRED_PROBE 1 /* Probe deferred on this */

#define	DC_HAS_CHILDREN 1

#define	DRIVERNAME(d) ((d)? d->name : "no driver")

#define	DEVCLANAME(d) ((d)? d->name : "no devclass")

#define	PDEBUG(a) /* nop */

#define	DEVICENAME(d) /* nop */

#define	print_device_short(d, i) /* nop */

#define	print_device(d, i) /* nop */

#define	print_device_tree_short(d, i) /* nop */

#define	print_device_tree(d, i) /* nop */

#define	print_driver_short(d, i) /* nop */

#define	print_driver(d, i) /* nop */

#define	print_driver_list(d, i) /* nop */

#define	print_devclass_short(d, i) /* nop */

#define	print_devclass(d, i) /* nop */

#define	print_devclass_list_short() /* nop */

#define	print_devclass_list() /* nop */

#define	DEVCTL_DEFAULT_QUEUE_LEN 1000

#define	DEVCTL_BUFFER (1024 - sizeof(void *))

Typedefs
typedef struct driverlink *	driverlink_t

Enumerations
enum	{ DEVCLASS_SYSCTL_PARENT }

enum	{ DEVICE_SYSCTL_DESC , DEVICE_SYSCTL_DRIVER , DEVICE_SYSCTL_LOCATION , DEVICE_SYSCTL_PNPINFO , DEVICE_SYSCTL_PARENT }

Functions
	__FBSDID ("$FreeBSD$")

	SYSCTL_NODE (_hw, OID_AUTO, bus, CTLFLAG_RW\|CTLFLAG_MPSAFE, NULL, NULL)

	SYSCTL_ROOT_NODE (OID_AUTO, dev, CTLFLAG_RW\|CTLFLAG_MPSAFE, NULL, NULL)

typedef	TAILQ_HEAD (devclass_list, devclass)

static	MALLOC_DEFINE (M_BUS, "bus", "Bus data structures")

static	MALLOC_DEFINE (M_BUS_SC, "bus-sc", "Bus data structures, softc")

	EVENTHANDLER_LIST_DEFINE (device_attach)

	EVENTHANDLER_LIST_DEFINE (device_detach)

	EVENTHANDLER_LIST_DEFINE (dev_lookup)

static void	devctl2_init (void)

static int	devclass_sysctl_handler (SYSCTL_HANDLER_ARGS)

static void	devclass_sysctl_init (devclass_t dc)

static int	device_sysctl_handler (SYSCTL_HANDLER_ARGS)

static void	device_sysctl_init (device_t dev)

static void	device_sysctl_update (device_t dev)

static void	device_sysctl_fini (device_t dev)

static int	sysctl_devctl_queue (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_hw_bus, OID_AUTO, devctl_queue, CTLTYPE_INT\|CTLFLAG_RWTUN\|CTLFLAG_MPSAFE, NULL, 0, sysctl_devctl_queue, "I", "devctl queue length")

	STAILQ_HEAD (devq, dev_event_info)

static void	filt_devctl_detach (struct knote *kn)

static int	filt_devctl_read (struct knote *kn, long hint)

static void	devinit (void)

static int	devopen (struct cdev dev, int oflags, int devtype, struct thread td)

static int	devclose (struct cdev dev, int fflag, int devtype, struct thread td)

static int	devread (struct cdev dev, struct uio uio, int ioflag)

static int	devioctl (struct cdev dev, u_long cmd, caddr_t data, int fflag, struct thread td)

static int	devpoll (struct cdev dev, int events, struct thread td)

static int	devkqfilter (struct cdev dev, struct knote kn)

bool	devctl_process_running (void)
	Return whether the userland process is running. More...

static struct dev_event_info *	devctl_alloc_dei (void)

static struct dev_event_info *	devctl_alloc_dei_sb (struct sbuf *sb)

static void	devctl_free_dei (struct dev_event_info *dei)

static void	devctl_queue (struct dev_event_info *dei)

void	devctl_notify (const char system, const char subsystem, const char type, const char data)
	Send a 'notification' to userland, using standard ways. More...

static void	devaddq (const char type, const char what, device_t dev)

static void	devadded (device_t dev)

static void	devremoved (device_t dev)

static void	devnomatch (device_t dev)

void	devctl_safe_quote_sb (struct sbuf sb, const char src)
	safely quotes strings that might have double quotes in them. More...

	DEFINE_CLASS (null, null_methods, 0)

void	bus_topo_assert ()

struct mtx *	bus_topo_mtx (void)

void	bus_topo_lock (void)

void	bus_topo_unlock (void)

static void	driver_register_pass (struct driverlink *new)
	Register the pass level of a new driver attachment. More...

void	bus_set_pass (int pass)
	Raise the current bus pass. More...

static devclass_t	devclass_find_internal (const char classname, const char parentname, int create)
	Find or create a device class. More...

devclass_t	devclass_create (const char *classname)
	Create a device class. More...

devclass_t	devclass_find (const char *classname)
	Find a device class. More...

static void	devclass_driver_added (devclass_t dc, driver_t *driver)
	Register that a device driver has been added to a devclass. More...

int	devclass_add_driver (devclass_t dc, driver_t driver, int pass, devclass_t dcp)
	Add a device driver to a device class. More...

static int	devclass_driver_deleted (devclass_t busclass, devclass_t dc, driver_t *driver)
	Register that a device driver has been deleted from a devclass. More...

int	devclass_delete_driver (devclass_t busclass, driver_t *driver)
	Delete a device driver from a device class. More...

static int	devclass_quiesce_driver (devclass_t busclass, driver_t *driver)
	Quiesces a set of device drivers from a device class. More...

static driverlink_t	devclass_find_driver_internal (devclass_t dc, const char *classname)

const char *	devclass_get_name (devclass_t dc)
	Return the name of the devclass. More...

device_t	devclass_get_device (devclass_t dc, int unit)
	Find a device given a unit number. More...

void *	devclass_get_softc (devclass_t dc, int unit)
	Find the softc field of a device given a unit number. More...

int	devclass_get_devices (devclass_t dc, device_t *devlistp, int devcountp)
	Get a list of devices in the devclass. More...

int	devclass_get_drivers (devclass_t dc, driver_t **listp, int countp)
	Get a list of drivers in the devclass. More...

int	devclass_get_count (devclass_t dc)
	Get the number of devices in a devclass. More...

int	devclass_get_maxunit (devclass_t dc)
	Get the maximum unit number used in a devclass. More...

int	devclass_find_free_unit (devclass_t dc, int unit)
	Find a free unit number in a devclass. More...

void	devclass_set_parent (devclass_t dc, devclass_t pdc)
	Set the parent of a devclass. More...

devclass_t	devclass_get_parent (devclass_t dc)
	Get the parent of a devclass. More...

struct sysctl_ctx_list *	devclass_get_sysctl_ctx (devclass_t dc)

struct sysctl_oid *	devclass_get_sysctl_tree (devclass_t dc)

static int	devclass_alloc_unit (devclass_t dc, device_t dev, int *unitp)
	Allocate a unit number. More...

static int	devclass_add_device (devclass_t dc, device_t dev)
	Add a device to a devclass. More...

static int	devclass_delete_device (devclass_t dc, device_t dev)
	Delete a device from a devclass. More...

static device_t	make_device (device_t parent, const char *name, int unit)
	Make a new device and add it as a child of `parent`. More...

static int	device_print_child (device_t dev, device_t child)
	Print a description of a device. More...

device_t	device_add_child (device_t dev, const char *name, int unit)
	Create a new device. More...

device_t	device_add_child_ordered (device_t dev, u_int order, const char *name, int unit)
	Create a new device. More...

int	device_delete_child (device_t dev, device_t child)
	Delete a device. More...

int	device_delete_children (device_t dev)
	Delete all children devices of the given device, if any. More...

device_t	device_find_child (device_t dev, const char *classname, int unit)
	Find a device given a unit number. More...

static driverlink_t	first_matching_driver (devclass_t dc, device_t dev)

static driverlink_t	next_matching_driver (devclass_t dc, device_t dev, driverlink_t last)

int	device_probe_child (device_t dev, device_t child)

device_t	device_get_parent (device_t dev)
	Return the parent of a device. More...

int	device_get_children (device_t dev, device_t *devlistp, int devcountp)
	Get a list of children of a device. More...

driver_t *	device_get_driver (device_t dev)
	Return the current driver for the device or `NULL` if there is no driver currently attached. More...

devclass_t	device_get_devclass (device_t dev)
	Return the current devclass for the device or `NULL` if there is none. More...

const char *	device_get_name (device_t dev)
	Return the name of the device's devclass or `NULL` if there is none. More...

const char *	device_get_nameunit (device_t dev)
	Return a string containing the device's devclass name followed by an ascii representation of the device's unit number (e.g. `"foo2"`). More...

int	device_get_unit (device_t dev)
	Return the device's unit number. More...

const char *	device_get_desc (device_t dev)
	Return the device's description string. More...

uint32_t	device_get_flags (device_t dev)
	Return the device's flags. More...

struct sysctl_ctx_list *	device_get_sysctl_ctx (device_t dev)

struct sysctl_oid *	device_get_sysctl_tree (device_t dev)

int	device_print_prettyname (device_t dev)
	Print the name of the device followed by a colon and a space. More...

int	device_printf (device_t dev, const char *fmt,...)
	Print the name of the device followed by a colon, a space and the result of calling vprintf() with the value of `fmt` and the following arguments. More...

int	device_log (device_t dev, int pri, const char *fmt,...)
	Print the name of the device followed by a colon, a space and the result of calling log() with the value of `fmt` and the following arguments. More...

static void	device_set_desc_internal (device_t dev, const char *desc, int copy)

void	device_set_desc (device_t dev, const char *desc)
	Set the device's description. More...

void	device_set_desc_copy (device_t dev, const char *desc)
	Set the device's description. More...

void	device_set_flags (device_t dev, uint32_t flags)
	Set the device's flags. More...

void *	device_get_softc (device_t dev)
	Return the device's softc field. More...

void	device_set_softc (device_t dev, void *softc)
	Set the device's softc field. More...

void	device_free_softc (void *softc)
	Free claimed softc. More...

void	device_claim_softc (device_t dev)
	Claim softc. More...

void *	device_get_ivars (device_t dev)
	Get the device's ivars field. More...

void	device_set_ivars (device_t dev, void *ivars)
	Set the device's ivars field. More...

device_state_t	device_get_state (device_t dev)
	Return the device's state. More...

void	device_enable (device_t dev)
	Set the DF_ENABLED flag for the device. More...

void	device_disable (device_t dev)
	Clear the DF_ENABLED flag for the device. More...

void	device_busy (device_t dev)
	Increment the busy counter for the device. More...

void	device_unbusy (device_t dev)
	Decrement the busy counter for the device. More...

void	device_quiet (device_t dev)
	Set the DF_QUIET flag for the device. More...

void	device_quiet_children (device_t dev)
	Set the DF_QUIET_CHILDREN flag for the device. More...

void	device_verbose (device_t dev)
	Clear the DF_QUIET flag for the device. More...

ssize_t	device_get_property (device_t dev, const char prop, void val, size_t sz, device_property_type_t type)

bool	device_has_property (device_t dev, const char *prop)

int	device_has_quiet_children (device_t dev)
	Return non-zero if the DF_QUIET_CHIDLREN flag is set on the device. More...

int	device_is_quiet (device_t dev)
	Return non-zero if the DF_QUIET flag is set on the device. More...

int	device_is_enabled (device_t dev)
	Return non-zero if the DF_ENABLED flag is set on the device. More...

int	device_is_alive (device_t dev)
	Return non-zero if the device was successfully probed. More...

int	device_is_attached (device_t dev)
	Return non-zero if the device currently has a driver attached to it. More...

int	device_is_suspended (device_t dev)
	Return non-zero if the device is currently suspended. More...

int	device_set_devclass (device_t dev, const char *classname)
	Set the devclass of a device. More...

int	device_set_devclass_fixed (device_t dev, const char *classname)
	Set the devclass of a device and mark the devclass fixed. More...

bool	device_is_devclass_fixed (device_t dev)
	Query the device to determine if it's of a fixed devclass. More...

int	device_set_driver (device_t dev, driver_t *driver)
	Set the driver of a device. More...

int	device_probe (device_t dev)
	Probe a device, and return this status. More...

int	device_probe_and_attach (device_t dev)
	Probe a device and attach a driver if possible. More...

int	device_attach (device_t dev)
	Attach a device driver to a device. More...

int	device_detach (device_t dev)
	Detach a driver from a device. More...

int	device_quiesce (device_t dev)
	Tells a driver to quiesce itself. More...

int	device_shutdown (device_t dev)
	Notify a device of system shutdown. More...

int	device_set_unit (device_t dev, int unit)
	Set the unit number of a device. More...

void	resource_init_map_request_impl (struct resource_map_request *args, size_t sz)

void	resource_list_init (struct resource_list *rl)
	Initialise a resource list. More...

void	resource_list_free (struct resource_list *rl)
	Reclaim memory used by a resource list. More...

int	resource_list_add_next (struct resource_list *rl, int type, rman_res_t start, rman_res_t end, rman_res_t count)
	Add a resource entry. More...

struct resource_list_entry *	resource_list_add (struct resource_list *rl, int type, int rid, rman_res_t start, rman_res_t end, rman_res_t count)
	Add or modify a resource entry. More...

int	resource_list_busy (struct resource_list *rl, int type, int rid)
	Determine if a resource entry is busy. More...

int	resource_list_reserved (struct resource_list *rl, int type, int rid)
	Determine if a resource entry is reserved. More...

struct resource_list_entry *	resource_list_find (struct resource_list *rl, int type, int rid)
	Find a resource entry by type and rid. More...

void	resource_list_delete (struct resource_list *rl, int type, int rid)
	Delete a resource entry. More...

struct resource *	resource_list_reserve (struct resource_list rl, device_t bus, device_t child, int type, int rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
	Allocate a reserved resource. More...

struct resource *	resource_list_alloc (struct resource_list rl, device_t bus, device_t child, int type, int rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
	Helper function for implementing BUS_ALLOC_RESOURCE() More...

int	resource_list_release (struct resource_list rl, device_t bus, device_t child, int type, int rid, struct resource res)
	Helper function for implementing BUS_RELEASE_RESOURCE() More...

int	resource_list_release_active (struct resource_list *rl, device_t bus, device_t child, int type)
	Release all active resources of a given type. More...

int	resource_list_unreserve (struct resource_list *rl, device_t bus, device_t child, int type, int rid)
	Fully release a reserved resource. More...

int	resource_list_print_type (struct resource_list rl, const char name, int type, const char *format)
	Print a description of resources in a resource list. More...

void	resource_list_purge (struct resource_list *rl)
	Releases all the resources in a list. More...

device_t	bus_generic_add_child (device_t dev, u_int order, const char *name, int unit)

int	bus_generic_probe (device_t dev)
	Helper function for implementing DEVICE_PROBE() More...

int	bus_generic_attach (device_t dev)
	Helper function for implementing DEVICE_ATTACH() More...

int	bus_delayed_attach_children (device_t dev)
	Helper function for delaying attaching children. More...

int	bus_generic_detach (device_t dev)
	Helper function for implementing DEVICE_DETACH() More...

int	bus_generic_shutdown (device_t dev)
	Helper function for implementing DEVICE_SHUTDOWN() More...

int	bus_generic_suspend_child (device_t dev, device_t child)
	Default function for suspending a child device. More...

int	bus_generic_resume_child (device_t dev, device_t child)
	Default function for resuming a child device. More...

int	bus_generic_suspend (device_t dev)
	Helper function for implementing DEVICE_SUSPEND() More...

int	bus_generic_resume (device_t dev)
	Helper function for implementing DEVICE_RESUME() More...

int	bus_helper_reset_post (device_t dev, int flags)
	Helper function for implementing BUS_RESET_POST. More...

static void	bus_helper_reset_prepare_rollback (device_t dev, device_t child, int flags)

int	bus_helper_reset_prepare (device_t dev, int flags)
	Helper function for implementing BUS_RESET_PREPARE. More...

int	bus_print_child_header (device_t dev, device_t child)
	Helper function for implementing BUS_PRINT_CHILD(). More...

int	bus_print_child_footer (device_t dev, device_t child)
	Helper function for implementing BUS_PRINT_CHILD(). More...

int	bus_print_child_domain (device_t dev, device_t child)
	Helper function for implementing BUS_PRINT_CHILD(). More...

int	bus_generic_print_child (device_t dev, device_t child)
	Helper function for implementing BUS_PRINT_CHILD(). More...

int	bus_generic_read_ivar (device_t dev, device_t child, int index, uintptr_t *result)
	Stub function for implementing BUS_READ_IVAR(). More...

int	bus_generic_write_ivar (device_t dev, device_t child, int index, uintptr_t value)
	Stub function for implementing BUS_WRITE_IVAR(). More...

ssize_t	bus_generic_get_property (device_t dev, device_t child, const char propname, void propvalue, size_t size, device_property_type_t type)
	Helper function for implementing BUS_GET_PROPERTY(). More...

struct resource_list *	bus_generic_get_resource_list (device_t dev, device_t child)
	Stub function for implementing BUS_GET_RESOURCE_LIST(). More...

void	bus_generic_driver_added (device_t dev, driver_t *driver)
	Helper function for implementing BUS_DRIVER_ADDED(). More...

void	bus_generic_new_pass (device_t dev)
	Helper function for implementing BUS_NEW_PASS(). More...

int	bus_generic_setup_intr (device_t dev, device_t child, struct resource irq, int flags, driver_filter_t filter, driver_intr_t intr, void arg, void **cookiep)
	Helper function for implementing BUS_SETUP_INTR(). More...

int	bus_generic_teardown_intr (device_t dev, device_t child, struct resource irq, void cookie)
	Helper function for implementing BUS_TEARDOWN_INTR(). More...

int	bus_generic_suspend_intr (device_t dev, device_t child, struct resource *irq)
	Helper function for implementing BUS_SUSPEND_INTR(). More...

int	bus_generic_resume_intr (device_t dev, device_t child, struct resource *irq)
	Helper function for implementing BUS_RESUME_INTR(). More...

int	bus_generic_adjust_resource (device_t dev, device_t child, int type, struct resource *r, rman_res_t start, rman_res_t end)
	Helper function for implementing BUS_ADJUST_RESOURCE(). More...

int	bus_generic_translate_resource (device_t dev, int type, rman_res_t start, rman_res_t *newstart)

struct resource *	bus_generic_alloc_resource (device_t dev, device_t child, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
	Helper function for implementing BUS_ALLOC_RESOURCE(). More...

int	bus_generic_release_resource (device_t dev, device_t child, int type, int rid, struct resource *r)
	Helper function for implementing BUS_RELEASE_RESOURCE(). More...

int	bus_generic_activate_resource (device_t dev, device_t child, int type, int rid, struct resource *r)
	Helper function for implementing BUS_ACTIVATE_RESOURCE(). More...

int	bus_generic_deactivate_resource (device_t dev, device_t child, int type, int rid, struct resource *r)
	Helper function for implementing BUS_DEACTIVATE_RESOURCE(). More...

int	bus_generic_map_resource (device_t dev, device_t child, int type, struct resource r, struct resource_map_request args, struct resource_map *map)
	Helper function for implementing BUS_MAP_RESOURCE(). More...

int	bus_generic_unmap_resource (device_t dev, device_t child, int type, struct resource r, struct resource_map map)
	Helper function for implementing BUS_UNMAP_RESOURCE(). More...

int	bus_generic_bind_intr (device_t dev, device_t child, struct resource *irq, int cpu)
	Helper function for implementing BUS_BIND_INTR(). More...

int	bus_generic_config_intr (device_t dev, int irq, enum intr_trigger trig, enum intr_polarity pol)
	Helper function for implementing BUS_CONFIG_INTR(). More...

int	bus_generic_describe_intr (device_t dev, device_t child, struct resource irq, void cookie, const char *descr)
	Helper function for implementing BUS_DESCRIBE_INTR(). More...

int	bus_generic_get_cpus (device_t dev, device_t child, enum cpu_sets op, size_t setsize, cpuset_t *cpuset)
	Helper function for implementing BUS_GET_CPUS(). More...

bus_dma_tag_t	bus_generic_get_dma_tag (device_t dev, device_t child)
	Helper function for implementing BUS_GET_DMA_TAG(). More...

bus_space_tag_t	bus_generic_get_bus_tag (device_t dev, device_t child)
	Helper function for implementing BUS_GET_BUS_TAG(). More...

int	bus_generic_rl_get_resource (device_t dev, device_t child, int type, int rid, rman_res_t startp, rman_res_t countp)
	Helper function for implementing BUS_GET_RESOURCE(). More...

int	bus_generic_rl_set_resource (device_t dev, device_t child, int type, int rid, rman_res_t start, rman_res_t count)
	Helper function for implementing BUS_SET_RESOURCE(). More...

void	bus_generic_rl_delete_resource (device_t dev, device_t child, int type, int rid)
	Helper function for implementing BUS_DELETE_RESOURCE(). More...

int	bus_generic_rl_release_resource (device_t dev, device_t child, int type, int rid, struct resource *r)
	Helper function for implementing BUS_RELEASE_RESOURCE(). More...

struct resource *	bus_generic_rl_alloc_resource (device_t dev, device_t child, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
	Helper function for implementing BUS_ALLOC_RESOURCE(). More...

int	bus_generic_child_present (device_t dev, device_t child)
	Helper function for implementing BUS_CHILD_PRESENT(). More...

int	bus_generic_get_domain (device_t dev, device_t child, int *domain)

int	bus_generic_get_device_path (device_t bus, device_t child, const char locator, struct sbuf sb)
	Helper function to implement normal BUS_GET_DEVICE_PATH() More...

int	bus_null_rescan (device_t dev)
	Helper function for implementing BUS_RESCAN(). More...

int	bus_alloc_resources (device_t dev, struct resource_spec rs, struct resource *res)

void	bus_release_resources (device_t dev, const struct resource_spec rs, struct resource *res)

struct resource *	bus_alloc_resource (device_t dev, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
	Wrapper function for BUS_ALLOC_RESOURCE(). More...

int	bus_adjust_resource (device_t dev, int type, struct resource *r, rman_res_t start, rman_res_t end)
	Wrapper function for BUS_ADJUST_RESOURCE(). More...

int	bus_translate_resource (device_t dev, int type, rman_res_t start, rman_res_t *newstart)
	Wrapper function for BUS_TRANSLATE_RESOURCE(). More...

int	bus_activate_resource (device_t dev, int type, int rid, struct resource *r)
	Wrapper function for BUS_ACTIVATE_RESOURCE(). More...

int	bus_deactivate_resource (device_t dev, int type, int rid, struct resource *r)
	Wrapper function for BUS_DEACTIVATE_RESOURCE(). More...

int	bus_map_resource (device_t dev, int type, struct resource r, struct resource_map_request args, struct resource_map *map)
	Wrapper function for BUS_MAP_RESOURCE(). More...

int	bus_unmap_resource (device_t dev, int type, struct resource r, struct resource_map map)
	Wrapper function for BUS_UNMAP_RESOURCE(). More...

int	bus_release_resource (device_t dev, int type, int rid, struct resource *r)
	Wrapper function for BUS_RELEASE_RESOURCE(). More...

int	bus_setup_intr (device_t dev, struct resource r, int flags, driver_filter_t filter, driver_intr_t handler, void arg, void **cookiep)
	Wrapper function for BUS_SETUP_INTR(). More...

int	bus_teardown_intr (device_t dev, struct resource r, void cookie)
	Wrapper function for BUS_TEARDOWN_INTR(). More...

int	bus_suspend_intr (device_t dev, struct resource *r)
	Wrapper function for BUS_SUSPEND_INTR(). More...

int	bus_resume_intr (device_t dev, struct resource *r)
	Wrapper function for BUS_RESUME_INTR(). More...

int	bus_bind_intr (device_t dev, struct resource *r, int cpu)
	Wrapper function for BUS_BIND_INTR(). More...

int	bus_describe_intr (device_t dev, struct resource irq, void cookie, const char *fmt,...)
	Wrapper function for BUS_DESCRIBE_INTR(). More...

int	bus_set_resource (device_t dev, int type, int rid, rman_res_t start, rman_res_t count)
	Wrapper function for BUS_SET_RESOURCE(). More...

int	bus_get_resource (device_t dev, int type, int rid, rman_res_t startp, rman_res_t countp)
	Wrapper function for BUS_GET_RESOURCE(). More...

rman_res_t	bus_get_resource_start (device_t dev, int type, int rid)
	Wrapper function for BUS_GET_RESOURCE(). More...

rman_res_t	bus_get_resource_count (device_t dev, int type, int rid)
	Wrapper function for BUS_GET_RESOURCE(). More...

void	bus_delete_resource (device_t dev, int type, int rid)
	Wrapper function for BUS_DELETE_RESOURCE(). More...

int	bus_child_present (device_t child)
	Wrapper function for BUS_CHILD_PRESENT(). More...

int	bus_child_pnpinfo (device_t child, struct sbuf *sb)
	Wrapper function for BUS_CHILD_PNPINFO(). More...

int	bus_generic_child_pnpinfo (device_t dev, device_t child, struct sbuf *sb)
	Generic implementation that does nothing for bus_child_pnpinfo. More...

int	bus_child_location (device_t child, struct sbuf *sb)
	Wrapper function for BUS_CHILD_LOCATION(). More...

int	bus_generic_child_location (device_t dev, device_t child, struct sbuf *sb)
	Generic implementation that does nothing for bus_child_location. More...

int	bus_get_cpus (device_t dev, enum cpu_sets op, size_t setsize, cpuset_t *cpuset)
	Wrapper function for BUS_GET_CPUS(). More...

bus_dma_tag_t	bus_get_dma_tag (device_t dev)
	Wrapper function for BUS_GET_DMA_TAG(). More...

bus_space_tag_t	bus_get_bus_tag (device_t dev)
	Wrapper function for BUS_GET_BUS_TAG(). More...

int	bus_get_domain (device_t dev, int *domain)
	Wrapper function for BUS_GET_DOMAIN(). More...

static int	root_resume (device_t dev)

static int	root_print_child (device_t dev, device_t child)

static int	root_setup_intr (device_t dev, device_t child, struct resource irq, int flags, driver_filter_t filter, driver_intr_t intr, void arg, void **cookiep)

static int	root_child_present (device_t dev, device_t child)

static int	root_get_cpus (device_t dev, device_t child, enum cpu_sets op, size_t setsize, cpuset_t *cpuset)

static int	root_bus_module_handler (module_t mod, int what, void *arg)

	DECLARE_MODULE (rootbus, root_bus_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST)

void	root_bus_configure (void)
	Automatically configure devices. More...

int	driver_module_handler (module_t mod, int what, void *arg)
	Module handler for registering device drivers. More...

void	bus_enumerate_hinted_children (device_t bus)
	Enumerate all hinted devices for this bus. More...

static int	sysctl_bus_info (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_hw_bus, OID_AUTO, info, CTLTYPE_STRUCT\|CTLFLAG_RD\|CTLFLAG_MPSAFE, NULL, 0, sysctl_bus_info, "S,u_businfo", "bus-related data")

static int	sysctl_devices (SYSCTL_HANDLER_ARGS)

	SYSCTL_NODE (_hw_bus, OID_AUTO, devices, CTLFLAG_RD\|CTLFLAG_NEEDGIANT, sysctl_devices, "system device tree")

int	bus_data_generation_check (int generation)

void	bus_data_generation_update (void)

int	bus_free_resource (device_t dev, int type, struct resource *r)

device_t	device_lookup_by_name (const char *name)

static int	find_device (struct devreq req, device_t devp)

static bool	driver_exists (device_t bus, const char *driver)

static void	device_gen_nomatch (device_t dev)

static void	device_do_deferred_actions (void)

static char *	device_get_path (device_t dev, const char *locator)

static int	devctl2_ioctl (struct cdev cdev, u_long cmd, caddr_t data, int fflag, struct thread td)

typedef	TAILQ_HEAD (device_location_list, device_location_node)

device_location_cache_t *	dev_wired_cache_init (void)

void	dev_wired_cache_fini (device_location_cache_t *dcp)

static struct device_location_node *	dev_wired_cache_lookup (device_location_cache_t dcp, const char locator)

static struct device_location_node *	dev_wired_cache_add (device_location_cache_t dcp, const char locator, const char *path)

bool	dev_wired_cache_match (device_location_cache_t dcp, device_t dev, const char at)

	SYSCTL_INT (_debug, OID_AUTO, obsolete_panic, CTLFLAG_RWTUN, &obsolete_panic, 0, "Panic when obsolete features are used (0 = never, 1 = if obsolete, " "2 = if deprecated)")

static void	gone_panic (int major, int running, const char *msg)

void	_gone_in (int major, const char *msg)

void	_gone_in_dev (device_t dev, int major, const char *msg)

Variables
static bool	device_frozen

static int	devctl_queue_length = DEVCTL_DEFAULT_QUEUE_LEN

static d_open_t	devopen

static d_close_t	devclose

static d_read_t	devread

static d_ioctl_t	devioctl

static d_poll_t	devpoll

static d_kqfilter_t	devkqfilter

static struct cdevsw	dev_cdevsw

static struct dev_softc	devsoftc

struct filterops	devctl_rfiltops

static struct cdev *	devctl_dev

static struct device_list	bus_data_devices

static int	bus_data_generation = 1

static kobj_method_t	null_methods []

static driver_list_t	passes = TAILQ_HEAD_INITIALIZER(passes)

int	bus_current_pass = BUS_PASS_ROOT

static devclass_list_t	devclasses = TAILQ_HEAD_INITIALIZER(devclasses)

static kobj_method_t	root_methods []

static driver_t	root_driver

device_t	root_bus

devclass_t	root_devclass

static moduledata_t	root_bus_mod

static struct cdevsw	devctl2_cdevsw

static int	obsolete_panic = 0

Macro Definition Documentation

◆ DC_HAS_CHILDREN

#define DC_HAS_CHILDREN 1

◆ DEVCLANAME

#define DEVCLANAME ( d ) ((d)? d->name : "no devclass")

Definition at line 167 of file subr_bus.c.

◆ DEVCTL_BUFFER

#define DEVCTL_BUFFER (1024 - sizeof(void *))

Definition at line 399 of file subr_bus.c.

◆ DEVCTL_DEFAULT_QUEUE_LEN

#define DEVCTL_DEFAULT_QUEUE_LEN 1000

Definition at line 375 of file subr_bus.c.

◆ DEVICENAME

#define DEVICENAME ( d ) /* nop */

Definition at line 198 of file subr_bus.c.

◆ DL_DEFERRED_PROBE

#define DL_DEFERRED_PROBE 1 /* Probe deferred on this */

◆ DRIVERNAME

#define DRIVERNAME ( d ) ((d)? d->name : "no driver")

Definition at line 166 of file subr_bus.c.

◆ PDEBUG

#define PDEBUG ( a ) /* nop */

Definition at line 197 of file subr_bus.c.

◆ print_devclass

#define print_devclass	(	d,
		i
	)	/* nop */

Definition at line 208 of file subr_bus.c.

◆ print_devclass_list

#define print_devclass_list ( ) /* nop */

Definition at line 210 of file subr_bus.c.

◆ print_devclass_list_short

#define print_devclass_list_short ( ) /* nop */

Definition at line 209 of file subr_bus.c.

◆ print_devclass_short

#define print_devclass_short	(	d,
		i
	)	/* nop */

Definition at line 207 of file subr_bus.c.

◆ print_device

#define print_device	(	d,
		i
	)	/* nop */

Definition at line 201 of file subr_bus.c.

◆ print_device_short

#define print_device_short	(	d,
		i
	)	/* nop */

Definition at line 200 of file subr_bus.c.

◆ print_device_tree

#define print_device_tree	(	d,
		i
	)	/* nop */

Definition at line 203 of file subr_bus.c.

◆ print_device_tree_short

#define print_device_tree_short	(	d,
		i
	)	/* nop */

Definition at line 202 of file subr_bus.c.

◆ print_driver

#define print_driver	(	d,
		i
	)	/* nop */

Definition at line 205 of file subr_bus.c.

◆ print_driver_list

#define print_driver_list	(	d,
		i
	)	/* nop */

Definition at line 206 of file subr_bus.c.

◆ print_driver_short

#define print_driver_short	(	d,
		i
	)	/* nop */

Definition at line 204 of file subr_bus.c.

Typedef Documentation

◆ driverlink_t

typedef struct driverlink* driverlink_t

Definition at line 84 of file subr_bus.c.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
DEVCLASS_SYSCTL_PARENT

Definition at line 217 of file subr_bus.c.

◆ anonymous enum

anonymous enum

Enumerator
DEVICE_SYSCTL_DESC
DEVICE_SYSCTL_DRIVER
DEVICE_SYSCTL_LOCATION
DEVICE_SYSCTL_PNPINFO
DEVICE_SYSCTL_PARENT

Definition at line 253 of file subr_bus.c.

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ _gone_in()

void _gone_in	(	int	major,
		const char *	msg
	)

Definition at line 6259 of file subr_bus.c.

References gone_panic(), and printf().

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◆ _gone_in_dev()

void _gone_in_dev	(	device_t	dev,
		int	major,
		const char *	msg
	)

Definition at line 6270 of file subr_bus.c.

References device_printf(), and gone_panic().

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◆ bus_activate_resource()

int bus_activate_resource	(	device_t	dev,
		int	type,
		int	rid,
		struct resource *	r
	)

Wrapper function for BUS_ACTIVATE_RESOURCE().

This function simply calls the BUS_ACTIVATE_RESOURCE() method of the parent of dev.

Definition at line 4818 of file subr_bus.c.

References type.

Referenced by resource_list_alloc().

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◆ bus_adjust_resource()

int bus_adjust_resource	(	device_t	dev,
		int	type,
		struct resource *	r,
		rman_res_t	start,
		rman_res_t	end
	)

Wrapper function for BUS_ADJUST_RESOURCE().

This function simply calls the BUS_ADJUST_RESOURCE() method of the parent of dev.

Definition at line 4788 of file subr_bus.c.

References start, and type.

◆ bus_alloc_resource()

struct resource * bus_alloc_resource	(	device_t	dev,
		int	type,
		int *	rid,
		rman_res_t	start,
		rman_res_t	end,
		rman_res_t	count,
		u_int	flags
	)

Wrapper function for BUS_ALLOC_RESOURCE().

This function simply calls the BUS_ALLOC_RESOURCE() method of the parent of dev.

Definition at line 4769 of file subr_bus.c.

References count, flags, res, start, and type.

◆ bus_alloc_resources()

int bus_alloc_resources	(	device_t	dev,
		struct resource_spec *	rs,
		struct resource **	res
	)

Definition at line 4730 of file subr_bus.c.

References bus_release_resources(), flags, res, and type.

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◆ bus_bind_intr()

int bus_bind_intr	(	device_t	dev,
		struct resource *	r,
		int	cpu
	)

Wrapper function for BUS_BIND_INTR().

This function simply calls the BUS_BIND_INTR() method of the parent of dev.

Definition at line 4958 of file subr_bus.c.

Referenced by taskqgroup_attach(), and taskqgroup_attach_cpu().

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◆ bus_child_location()

int bus_child_location	(	device_t	child,
		struct sbuf *	sb
	)

Wrapper function for BUS_CHILD_LOCATION().

This function simply calls the BUS_CHILD_LOCATION() method of the parent of dev.

Definition at line 5115 of file subr_bus.c.

References child, device_get_parent(), and parent.

Referenced by devaddq(), device_sysctl_handler(), and sysctl_devices().

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◆ bus_child_pnpinfo()

int bus_child_pnpinfo	(	device_t	child,
		struct sbuf *	sb
	)

Wrapper function for BUS_CHILD_PNPINFO().

This function simply calls the BUS_CHILD_PNPINFO() method of the parent of dev.

Definition at line 5086 of file subr_bus.c.

References child, device_get_parent(), and parent.

Referenced by devaddq(), device_sysctl_handler(), and sysctl_devices().

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◆ bus_child_present()

int bus_child_present ( device_t child )

Wrapper function for BUS_CHILD_PRESENT().

This function simply calls the BUS_CHILD_PRESENT() method of the parent of dev.

Definition at line 5074 of file subr_bus.c.

References child, and device_get_parent().

Referenced by devctl2_ioctl().

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◆ bus_data_generation_check()

int bus_data_generation_check ( int generation )

Definition at line 5682 of file subr_bus.c.

References bus_data_generation.

Referenced by sysctl_devices(), and sysctl_rman().

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◆ bus_data_generation_update()

void bus_data_generation_update ( void )

Definition at line 5692 of file subr_bus.c.

References bus_data_generation.

Referenced by devclass_add_driver(), devclass_delete_driver(), devclass_find_internal(), device_add_child_ordered(), device_delete_child(), device_do_deferred_actions(), device_probe_child(), device_set_desc_internal(), device_set_devclass(), device_set_driver(), device_set_unit(), and make_device().

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◆ bus_deactivate_resource()

int bus_deactivate_resource	(	device_t	dev,
		int	type,
		int	rid,
		struct resource *	r
	)

Wrapper function for BUS_DEACTIVATE_RESOURCE().

This function simply calls the BUS_DEACTIVATE_RESOURCE() method of the parent of dev.

Definition at line 4832 of file subr_bus.c.

References type.

Referenced by resource_list_release().

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◆ bus_delayed_attach_children()

int bus_delayed_attach_children ( device_t dev )

Helper function for delaying attaching children.

Many buses can't run transactions on the bus which children need to probe and attach until after interrupts and/or timers are running. This function delays their attach until interrupts and timers are enabled.

Definition at line 3812 of file subr_bus.c.

References bus_generic_attach(), and config_intrhook_oneshot().

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◆ bus_delete_resource()

void bus_delete_resource	(	device_t	dev,
		int	type,
		int	rid
	)

Wrapper function for BUS_DELETE_RESOURCE().

This function simply calls the BUS_DELETE_RESOURCE() method of the parent of dev.

Definition at line 5062 of file subr_bus.c.

References device_get_parent(), and type.

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◆ bus_describe_intr()

int bus_describe_intr	(	device_t	dev,
		struct resource *	irq,
		void *	cookie,
		const char *	fmt,
			...
	)

Wrapper function for BUS_DESCRIBE_INTR().

This function first formats the requested description into a temporary buffer and then calls the BUS_DESCRIBE_INTR() method of the parent of dev.

Definition at line 4973 of file subr_bus.c.

References vsnprintf().

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◆ bus_enumerate_hinted_children()

void bus_enumerate_hinted_children ( device_t bus )

Enumerate all hinted devices for this bus.

Walks through the hints for this bus and calls the bus_hinted_child routine for each one it fines. It searches first for the specific bus that's being probed for hinted children (eg isa0), and then for generic children (eg isa).

Parameters

dev	bus device to enumerate

Definition at line 5410 of file subr_bus.c.

References bus, device_get_name(), device_get_nameunit(), and resource_find_match().

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◆ bus_free_resource()

int bus_free_resource	(	device_t	dev,
		int	type,
		struct resource *	r
	)

Definition at line 5698 of file subr_bus.c.

References bus_release_resource(), rman_get_rid(), and type.

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◆ bus_generic_activate_resource()

int bus_generic_activate_resource	(	device_t	dev,
		device_t	child,
		int	type,
		int	rid,
		struct resource *	r
	)

Helper function for implementing BUS_ACTIVATE_RESOURCE().

This simple implementation of BUS_ACTIVATE_RESOURCE() simply calls the BUS_ACTIVATE_RESOURCE() method of the parent of dev.

Definition at line 4362 of file subr_bus.c.

References child, and type.

◆ bus_generic_add_child()

device_t bus_generic_add_child	(	device_t	dev,
		u_int	order,
		const char *	name,
		int	unit
	)

Definition at line 3748 of file subr_bus.c.

References device_add_child_ordered(), and name.

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◆ bus_generic_adjust_resource()

int bus_generic_adjust_resource	(	device_t	dev,
		device_t	child,
		int	type,
		struct resource *	r,
		rman_res_t	start,
		rman_res_t	end
	)

Helper function for implementing BUS_ADJUST_RESOURCE().

This simple implementation of BUS_ADJUST_RESOURCE() simply calls the BUS_ADJUST_RESOURCE() method of the parent of dev.

Definition at line 4293 of file subr_bus.c.

References child, start, and type.

◆ bus_generic_alloc_resource()

struct resource * bus_generic_alloc_resource	(	device_t	dev,
		device_t	child,
		int	type,
		int *	rid,
		rman_res_t	start,
		rman_res_t	end,
		rman_res_t	count,
		u_int	flags
	)

Helper function for implementing BUS_ALLOC_RESOURCE().

This simple implementation of BUS_ALLOC_RESOURCE() simply calls the BUS_ALLOC_RESOURCE() method of the parent of dev.

Definition at line 4328 of file subr_bus.c.

References child, count, flags, start, and type.

◆ bus_generic_attach()

int bus_generic_attach ( device_t dev )

Helper function for implementing DEVICE_ATTACH()

This function can be used to help implement the DEVICE_ATTACH() for a bus. It calls device_probe_and_attach() for each of the device's children.

Definition at line 3793 of file subr_bus.c.

References child, and device_probe_and_attach().

Referenced by bus_delayed_attach_children().

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◆ bus_generic_bind_intr()

int bus_generic_bind_intr	(	device_t	dev,
		device_t	child,
		struct resource *	irq,
		int	cpu
	)

Helper function for implementing BUS_BIND_INTR().

This simple implementation of BUS_BIND_INTR() simply calls the BUS_BIND_INTR() method of the parent of dev.

Definition at line 4430 of file subr_bus.c.

References child.

◆ bus_generic_child_location()

int bus_generic_child_location	(	device_t	dev,
		device_t	child,
		struct sbuf *	sb
	)

Generic implementation that does nothing for bus_child_location.

This function has the right signature and returns 0 since the sbuf is passed to us to append to.

Definition at line 5132 of file subr_bus.c.

◆ bus_generic_child_pnpinfo()

int bus_generic_child_pnpinfo	(	device_t	dev,
		device_t	child,
		struct sbuf *	sb
	)

Generic implementation that does nothing for bus_child_pnpinfo.

This function has the right signature and returns 0 since the sbuf is passed to us to append to.

Definition at line 5103 of file subr_bus.c.

◆ bus_generic_child_present()

int bus_generic_child_present	(	device_t	dev,
		device_t	child
	)

Helper function for implementing BUS_CHILD_PRESENT().

This simple implementation of BUS_CHILD_PRESENT() simply calls the BUS_CHILD_PRESENT() method of the parent of dev.

Definition at line 4650 of file subr_bus.c.

References device_get_parent().

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◆ bus_generic_config_intr()

int bus_generic_config_intr	(	device_t	dev,
		int	irq,
		enum intr_trigger	trig,
		enum intr_polarity	pol
	)

Helper function for implementing BUS_CONFIG_INTR().

This simple implementation of BUS_CONFIG_INTR() simply calls the BUS_CONFIG_INTR() method of the parent of dev.

Definition at line 4446 of file subr_bus.c.

◆ bus_generic_deactivate_resource()

int bus_generic_deactivate_resource	(	device_t	dev,
		device_t	child,
		int	type,
		int	rid,
		struct resource *	r
	)

Helper function for implementing BUS_DEACTIVATE_RESOURCE().

This simple implementation of BUS_DEACTIVATE_RESOURCE() simply calls the BUS_DEACTIVATE_RESOURCE() method of the parent of dev.

Definition at line 4379 of file subr_bus.c.

References child, and type.

◆ bus_generic_describe_intr()

int bus_generic_describe_intr	(	device_t	dev,
		device_t	child,
		struct resource *	irq,
		void *	cookie,
		const char *	descr
	)

Helper function for implementing BUS_DESCRIBE_INTR().

This simple implementation of BUS_DESCRIBE_INTR() simply calls the BUS_DESCRIBE_INTR() method of the parent of dev.

Definition at line 4462 of file subr_bus.c.

References child.

◆ bus_generic_detach()

int bus_generic_detach ( device_t dev )

Helper function for implementing DEVICE_DETACH()

This function can be used to help implement the DEVICE_DETACH() for a bus. It calls device_detach() for each of the device's children.

Definition at line 3828 of file subr_bus.c.

References child, and device_detach().

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◆ bus_generic_driver_added()

void bus_generic_driver_added	(	device_t	dev,
		driver_t *	driver
	)

Helper function for implementing BUS_DRIVER_ADDED().

This implementation of BUS_DRIVER_ADDED() simply calls the driver's DEVICE_IDENTIFY() method to allow it to add new children to the bus and then calls device_probe_and_attach() for each unattached child.

Definition at line 4181 of file subr_bus.c.

References child, and device_probe_and_attach().

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◆ bus_generic_get_bus_tag()

bus_space_tag_t bus_generic_get_bus_tag	(	device_t	dev,
		device_t	child
	)

Helper function for implementing BUS_GET_BUS_TAG().

This simple implementation of BUS_GET_BUS_TAG() simply calls the BUS_GET_BUS_TAG() method of the parent of dev.

Definition at line 4510 of file subr_bus.c.

References child.

◆ bus_generic_get_cpus()

int bus_generic_get_cpus	(	device_t	dev,
		device_t	child,
		enum cpu_sets	op,
		size_t	setsize,
		cpuset_t *	cpuset
	)

Helper function for implementing BUS_GET_CPUS().

This simple implementation of BUS_GET_CPUS() simply calls the BUS_GET_CPUS() method of the parent of dev.

Definition at line 4479 of file subr_bus.c.

References child.

◆ bus_generic_get_device_path()

int bus_generic_get_device_path	(	device_t	bus,
		device_t	child,
		const char *	locator,
		struct sbuf *	sb
	)

Helper function to implement normal BUS_GET_DEVICE_PATH()

This function knows how to (a) pass the request up the tree if there's a parent and (b) Knows how to supply a FreeBSD locator.

Parameters

bus	bus in the walk up the tree
child	leaf node to print information about
locator	BUS_LOCATOR_xxx string for locator
sb	Buffer to print information into

Definition at line 4676 of file subr_bus.c.

References bus, child, device_get_nameunit(), device_get_parent(), parent, and sbuf_printf().

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◆ bus_generic_get_dma_tag()

bus_dma_tag_t bus_generic_get_dma_tag	(	device_t	dev,
		device_t	child
	)

Helper function for implementing BUS_GET_DMA_TAG().

This simple implementation of BUS_GET_DMA_TAG() simply calls the BUS_GET_DMA_TAG() method of the parent of dev.

Definition at line 4495 of file subr_bus.c.

References child.

◆ bus_generic_get_domain()

int bus_generic_get_domain	(	device_t	dev,
		device_t	child,
		int *	domain
	)

Definition at line 4656 of file subr_bus.c.

References domain.

◆ bus_generic_get_property()

ssize_t bus_generic_get_property	(	device_t	dev,
		device_t	child,
		const char *	propname,
		void *	propvalue,
		size_t	size,
		device_property_type_t	type
	)

Helper function for implementing BUS_GET_PROPERTY().

This simply calls the BUS_GET_PROPERTY of the parent of dev, until a non-default implementation is found.

Definition at line 4152 of file subr_bus.c.

References child, device_get_parent(), and type.

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◆ bus_generic_get_resource_list()

struct resource_list * bus_generic_get_resource_list	(	device_t	dev,
		device_t	child
	)

Stub function for implementing BUS_GET_RESOURCE_LIST().

Returns: NULL

Definition at line 4168 of file subr_bus.c.

◆ bus_generic_map_resource()

int bus_generic_map_resource	(	device_t	dev,
		device_t	child,
		int	type,
		struct resource *	r,
		struct resource_map_request *	args,
		struct resource_map *	map
	)

Helper function for implementing BUS_MAP_RESOURCE().

This simple implementation of BUS_MAP_RESOURCE() simply calls the BUS_MAP_RESOURCE() method of the parent of dev.

Definition at line 4396 of file subr_bus.c.

References child, and type.

◆ bus_generic_new_pass()

void bus_generic_new_pass ( device_t dev )

Helper function for implementing BUS_NEW_PASS().

This implementing of BUS_NEW_PASS() first calls the identify routines for any drivers that probe at the current pass. Then it walks the list of devices for this bus. If a device is already attached, then it calls BUS_NEW_PASS() on that device. If the device is not already attached, it attempts to attach a driver to it.

Definition at line 4203 of file subr_bus.c.

References bus_current_pass, child, device_probe_and_attach(), and driverlink::driver.

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◆ bus_generic_print_child()

int bus_generic_print_child	(	device_t	dev,
		device_t	child
	)

Helper function for implementing BUS_PRINT_CHILD().

This function simply calls bus_print_child_header() followed by bus_print_child_footer().

Returns: the number of characters printed

Definition at line 4110 of file subr_bus.c.

References bus_print_child_domain(), bus_print_child_footer(), bus_print_child_header(), and child.

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◆ bus_generic_probe()

int bus_generic_probe ( device_t dev )

Helper function for implementing DEVICE_PROBE()

This function can be used to help implement the DEVICE_PROBE() for a bus (i.e. a device which has other devices attached to it). It calls the DEVICE_IDENTIFY() method of each driver in the device's devclass.

Definition at line 3762 of file subr_bus.c.

References bus_current_pass, and driverlink::driver.

◆ bus_generic_read_ivar()

int bus_generic_read_ivar	(	device_t	dev,
		device_t	child,
		int	index,
		uintptr_t *	result
	)

Stub function for implementing BUS_READ_IVAR().

Returns: ENOENT

Definition at line 4127 of file subr_bus.c.

◆ bus_generic_release_resource()

int bus_generic_release_resource	(	device_t	dev,
		device_t	child,
		int	type,
		int	rid,
		struct resource *	r
	)

Helper function for implementing BUS_RELEASE_RESOURCE().

This simple implementation of BUS_RELEASE_RESOURCE() simply calls the BUS_RELEASE_RESOURCE() method of the parent of dev.

Definition at line 4345 of file subr_bus.c.

References child, and type.

◆ bus_generic_resume()

int bus_generic_resume ( device_t dev )

Helper function for implementing DEVICE_RESUME()

This function can be used to help implement the DEVICE_RESUME() for a bus. It calls DEVICE_RESUME() on each of the device's children.

Definition at line 3946 of file subr_bus.c.

References child.

Referenced by root_resume().

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◆ bus_generic_resume_child()

int bus_generic_resume_child	(	device_t	dev,
		device_t	child
	)

Default function for resuming a child device.

This function is to be used by a bus's DEVICE_RESUME_CHILD().

Definition at line 3895 of file subr_bus.c.

References child.

◆ bus_generic_resume_intr()

int bus_generic_resume_intr	(	device_t	dev,
		device_t	child,
		struct resource *	irq
	)

Helper function for implementing BUS_RESUME_INTR().

This simple implementation of BUS_RESUME_INTR() simply calls the BUS_RESUME_INTR() method of the parent of dev.

Definition at line 4278 of file subr_bus.c.

References child.

◆ bus_generic_rl_alloc_resource()

struct resource * bus_generic_rl_alloc_resource	(	device_t	dev,
		device_t	child,
		int	type,
		int *	rid,
		rman_res_t	start,
		rman_res_t	end,
		rman_res_t	count,
		u_int	flags
	)

Helper function for implementing BUS_ALLOC_RESOURCE().

This implementation of BUS_ALLOC_RESOURCE() uses the resource_list_alloc() function to do most of the work. It calls BUS_GET_RESOURCE_LIST() to find a suitable resource list.

Definition at line 4626 of file subr_bus.c.

References child, count, device_get_parent(), flags, resource_list_alloc(), start, and type.

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◆ bus_generic_rl_delete_resource()

void bus_generic_rl_delete_resource	(	device_t	dev,
		device_t	child,
		int	type,
		int	rid
	)

Helper function for implementing BUS_DELETE_RESOURCE().

This implementation of BUS_DELETE_RESOURCE() uses the resource_list_delete() function to do most of the work. It calls BUS_GET_RESOURCE_LIST() to find a suitable resource list to edit.

Definition at line 4581 of file subr_bus.c.

References child, resource_list_delete(), and type.

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◆ bus_generic_rl_get_resource()

int bus_generic_rl_get_resource	(	device_t	dev,
		device_t	child,
		int	type,
		int	rid,
		rman_res_t *	startp,
		rman_res_t *	countp
	)

Helper function for implementing BUS_GET_RESOURCE().

This implementation of BUS_GET_RESOURCE() uses the resource_list_find() function to do most of the work. It calls BUS_GET_RESOURCE_LIST() to find a suitable resource list to search.

Definition at line 4527 of file subr_bus.c.

References child, resource_list_find(), and type.

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◆ bus_generic_rl_release_resource()

int bus_generic_rl_release_resource	(	device_t	dev,
		device_t	child,
		int	type,
		int	rid,
		struct resource *	r
	)

Helper function for implementing BUS_RELEASE_RESOURCE().

This implementation of BUS_RELEASE_RESOURCE() uses the resource_list_release() function to do most of the work. It calls BUS_GET_RESOURCE_LIST() to find a suitable resource list.

Definition at line 4602 of file subr_bus.c.

References child, device_get_parent(), resource_list_release(), and type.

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◆ bus_generic_rl_set_resource()

int bus_generic_rl_set_resource	(	device_t	dev,
		device_t	child,
		int	type,
		int	rid,
		rman_res_t	start,
		rman_res_t	count
	)

Helper function for implementing BUS_SET_RESOURCE().

This implementation of BUS_SET_RESOURCE() uses the resource_list_add() function to do most of the work. It calls BUS_GET_RESOURCE_LIST() to find a suitable resource list to edit.

Definition at line 4558 of file subr_bus.c.

References child, count, resource_list_add(), start, and type.

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◆ bus_generic_setup_intr()

int bus_generic_setup_intr	(	device_t	dev,
		device_t	child,
		struct resource *	irq,
		int	flags,
		driver_filter_t *	filter,
		driver_intr_t *	intr,
		void *	arg,
		void **	cookiep
	)

Helper function for implementing BUS_SETUP_INTR().

This simple implementation of BUS_SETUP_INTR() simply calls the BUS_SETUP_INTR() method of the parent of dev.

Definition at line 4229 of file subr_bus.c.

References child, and flags.

◆ bus_generic_shutdown()

int bus_generic_shutdown ( device_t dev )

Helper function for implementing DEVICE_SHUTDOWN()

This function can be used to help implement the DEVICE_SHUTDOWN() for a bus. It calls device_shutdown() for each of the device's children.

Definition at line 3856 of file subr_bus.c.

References child, and device_shutdown().

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◆ bus_generic_suspend()

int bus_generic_suspend ( device_t dev )

Helper function for implementing DEVICE_SUSPEND()

This function can be used to help implement the DEVICE_SUSPEND() for a bus. It calls DEVICE_SUSPEND() for each of the device's children. If any call to DEVICE_SUSPEND() fails, the suspend operation is aborted and any devices which were suspended are resumed immediately by calling their DEVICE_RESUME() methods.

Definition at line 3913 of file subr_bus.c.

References child.

◆ bus_generic_suspend_child()

int bus_generic_suspend_child	(	device_t	dev,
		device_t	child
	)

Default function for suspending a child device.

This function is to be used by a bus's DEVICE_SUSPEND_CHILD().

Definition at line 3877 of file subr_bus.c.

References child.

◆ bus_generic_suspend_intr()

int bus_generic_suspend_intr	(	device_t	dev,
		device_t	child,
		struct resource *	irq
	)

Helper function for implementing BUS_SUSPEND_INTR().

This simple implementation of BUS_SUSPEND_INTR() simply calls the BUS_SUSPEND_INTR() method of the parent of dev.

Definition at line 4263 of file subr_bus.c.

References child.

◆ bus_generic_teardown_intr()

int bus_generic_teardown_intr	(	device_t	dev,
		device_t	child,
		struct resource *	irq,
		void *	cookie
	)

Helper function for implementing BUS_TEARDOWN_INTR().

This simple implementation of BUS_TEARDOWN_INTR() simply calls the BUS_TEARDOWN_INTR() method of the parent of dev.

Definition at line 4247 of file subr_bus.c.

References child.

◆ bus_generic_translate_resource()

int bus_generic_translate_resource	(	device_t	dev,
		int	type,
		rman_res_t	start,
		rman_res_t *	newstart
	)

Definition at line 4311 of file subr_bus.c.

References start, and type.

◆ bus_generic_unmap_resource()

int bus_generic_unmap_resource	(	device_t	dev,
		device_t	child,
		int	type,
		struct resource *	r,
		struct resource_map *	map
	)

Helper function for implementing BUS_UNMAP_RESOURCE().

This simple implementation of BUS_UNMAP_RESOURCE() simply calls the BUS_UNMAP_RESOURCE() method of the parent of dev.

Definition at line 4414 of file subr_bus.c.

References child, and type.

◆ bus_generic_write_ivar()

int bus_generic_write_ivar	(	device_t	dev,
		device_t	child,
		int	index,
		uintptr_t	value
	)

Stub function for implementing BUS_WRITE_IVAR().

Returns: ENOENT

Definition at line 4139 of file subr_bus.c.

◆ bus_get_bus_tag()

bus_space_tag_t bus_get_bus_tag ( device_t dev )

Wrapper function for BUS_GET_BUS_TAG().

This function simply calls the BUS_GET_BUS_TAG() method of the parent of dev.

Definition at line 5178 of file subr_bus.c.

References device_get_parent(), and parent.

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◆ bus_get_cpus()

int bus_get_cpus	(	device_t	dev,
		enum cpu_sets	op,
		size_t	setsize,
		cpuset_t *	cpuset
	)

Wrapper function for BUS_GET_CPUS().

This function simply calls the BUS_GET_CPUS() method of the parent of dev.

Definition at line 5144 of file subr_bus.c.

References device_get_parent(), and parent.

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◆ bus_get_dma_tag()

bus_dma_tag_t bus_get_dma_tag ( device_t dev )

Wrapper function for BUS_GET_DMA_TAG().

This function simply calls the BUS_GET_DMA_TAG() method of the parent of dev.

Definition at line 5161 of file subr_bus.c.

References device_get_parent(), and parent.

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◆ bus_get_domain()

int bus_get_domain	(	device_t	dev,
		int *	domain
	)

Wrapper function for BUS_GET_DOMAIN().

This function simply calls the BUS_GET_DOMAIN() method of the parent of dev.

Definition at line 5195 of file subr_bus.c.

References device_get_parent(), and domain.

Referenced by device_set_driver(), and device_sysctl_init().

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◆ bus_get_resource()

int bus_get_resource	(	device_t	dev,
		int	type,
		int	rid,
		rman_res_t *	startp,
		rman_res_t *	countp
	)

Wrapper function for BUS_GET_RESOURCE().

This function simply calls the BUS_GET_RESOURCE() method of the parent of dev.

Definition at line 5008 of file subr_bus.c.

References device_get_parent(), and type.

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◆ bus_get_resource_count()

rman_res_t bus_get_resource_count	(	device_t	dev,
		int	type,
		int	rid
	)

Wrapper function for BUS_GET_RESOURCE().

This function simply calls the BUS_GET_RESOURCE() method of the parent of dev and returns the count value.

Definition at line 5042 of file subr_bus.c.

References count, device_get_parent(), start, and type.

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◆ bus_get_resource_start()

rman_res_t bus_get_resource_start	(	device_t	dev,
		int	type,
		int	rid
	)

Wrapper function for BUS_GET_RESOURCE().

This function simply calls the BUS_GET_RESOURCE() method of the parent of dev and returns the start value.

Definition at line 5022 of file subr_bus.c.

References count, device_get_parent(), start, and type.

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◆ bus_helper_reset_post()

int bus_helper_reset_post	(	device_t	dev,
		int	flags
	)

Helper function for implementing BUS_RESET_POST.

Bus can use this function to implement common operations of re-attaching or resuming the children after the bus itself was reset, and after restoring bus-unique state of children.

Parameters

dev	The bus #param flags DEVF_RESET_*

Definition at line 3968 of file subr_bus.c.

References child, device_probe_and_attach(), and flags.

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◆ bus_helper_reset_prepare()

int bus_helper_reset_prepare	(	device_t	dev,
		int	flags
	)

Helper function for implementing BUS_RESET_PREPARE.

Bus can use this function to implement common operations of detaching or suspending the children before the bus itself is reset, and then save bus-unique state of children that must persists around reset.

Parameters

dev	The bus #param flags DEVF_RESET_*

Definition at line 4012 of file subr_bus.c.

References bus_helper_reset_prepare_rollback(), child, device_detach(), device_get_state(), device_probe_and_attach(), and flags.

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◆ bus_helper_reset_prepare_rollback()

static void bus_helper_reset_prepare_rollback	(	device_t	dev,
		device_t	child,
		int	flags
	)

static

Definition at line 3986 of file subr_bus.c.

References child, device_probe_and_attach(), and flags.

Referenced by bus_helper_reset_prepare().

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◆ bus_map_resource()

int bus_map_resource	(	device_t	dev,
		int	type,
		struct resource *	r,
		struct resource_map_request *	args,
		struct resource_map *	map
	)

Wrapper function for BUS_MAP_RESOURCE().

This function simply calls the BUS_MAP_RESOURCE() method of the parent of dev.

Definition at line 4846 of file subr_bus.c.

References type.

◆ bus_null_rescan()

int bus_null_rescan ( device_t dev )

Helper function for implementing BUS_RESCAN().

This null implementation of BUS_RESCAN() always fails to indicate the bus does not support rescanning.

Definition at line 4716 of file subr_bus.c.

◆ bus_print_child_domain()

int bus_print_child_domain	(	device_t	dev,
		device_t	child
	)

Helper function for implementing BUS_PRINT_CHILD().

This function prints out the VM domain for the given device.

Returns: the number of characters printed

Definition at line 4090 of file subr_bus.c.

References child, domain, and printf().

Referenced by bus_generic_print_child().

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◆ bus_print_child_footer()

int bus_print_child_footer	(	device_t	dev,
		device_t	child
	)

Helper function for implementing BUS_PRINT_CHILD().

This function prints the last part of the ascii representation of child, which consists of the string " on " followed by the name and unit of the dev.

Returns: the number of characters printed

Definition at line 4077 of file subr_bus.c.

References device_get_nameunit(), and printf().

Referenced by bus_generic_print_child().

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◆ bus_print_child_header()

int bus_print_child_header	(	device_t	dev,
		device_t	child
	)

Helper function for implementing BUS_PRINT_CHILD().

This function prints the first part of the ascii representation of child, including its name, unit and description (if any - see device_set_desc()).

Returns: the number of characters printed

Definition at line 4054 of file subr_bus.c.

References child, device_get_desc(), device_get_nameunit(), device_printf(), and printf().

Referenced by bus_generic_print_child(), and root_print_child().

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◆ bus_release_resource()

int bus_release_resource	(	device_t	dev,
		int	type,
		int	rid,
		struct resource *	r
	)

Wrapper function for BUS_RELEASE_RESOURCE().

This function simply calls the BUS_RELEASE_RESOURCE() method of the parent of dev.

Definition at line 4876 of file subr_bus.c.

References type.

Referenced by bus_free_resource(), bus_release_resources(), and resource_list_purge().

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◆ bus_release_resources()

void bus_release_resources	(	device_t	dev,
		const struct resource_spec *	rs,
		struct resource **	res
	)

Definition at line 4749 of file subr_bus.c.

References bus_release_resource(), res, and type.

Referenced by bus_alloc_resources().

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◆ bus_resume_intr()

int bus_resume_intr	(	device_t	dev,
		struct resource *	r
	)

Wrapper function for BUS_RESUME_INTR().

This function simply calls the BUS_RESUME_INTR() method of the parent of dev.

Definition at line 4944 of file subr_bus.c.

◆ bus_set_pass()

void bus_set_pass ( int pass )

Raise the current bus pass.

Raise the current bus pass level to pass. Call the BUS_NEW_PASS() method on the root bus to kick off a new device tree scan for each new pass level that has at least one driver.

Definition at line 948 of file subr_bus.c.

References bus_current_pass, panic(), passes, and root_bus.

Referenced by root_bus_configure().

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◆ bus_set_resource()

int bus_set_resource	(	device_t	dev,
		int	type,
		int	rid,
		rman_res_t	start,
		rman_res_t	count
	)

Wrapper function for BUS_SET_RESOURCE().

This function simply calls the BUS_SET_RESOURCE() method of the parent of dev.

Definition at line 4994 of file subr_bus.c.

References count, device_get_parent(), start, and type.

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◆ bus_setup_intr()

int bus_setup_intr	(	device_t	dev,
		struct resource *	r,
		int	flags,
		driver_filter_t	filter,
		driver_intr_t	handler,
		void *	arg,
		void **	cookiep
	)

Wrapper function for BUS_SETUP_INTR().

This function simply calls the BUS_SETUP_INTR() method of the parent of dev.

Definition at line 4893 of file subr_bus.c.

References device_printf(), and flags.

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◆ bus_suspend_intr()

int bus_suspend_intr	(	device_t	dev,
		struct resource *	r
	)

Wrapper function for BUS_SUSPEND_INTR().

This function simply calls the BUS_SUSPEND_INTR() method of the parent of dev.

Definition at line 4930 of file subr_bus.c.

◆ bus_teardown_intr()

int bus_teardown_intr	(	device_t	dev,
		struct resource *	r,
		void *	cookie
	)

Wrapper function for BUS_TEARDOWN_INTR().

This function simply calls the BUS_TEARDOWN_INTR() method of the parent of dev.

Definition at line 4916 of file subr_bus.c.

◆ bus_topo_assert()

void bus_topo_assert ( )

Definition at line 871 of file subr_bus.c.

Referenced by device_detach(), device_probe(), device_probe_and_attach(), and device_probe_child().

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◆ bus_topo_lock()

void bus_topo_lock ( void )

Definition at line 885 of file subr_bus.c.

References bus_topo_mtx().

Referenced by devctl2_ioctl(), and device_sysctl_handler().

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◆ bus_topo_mtx()

struct mtx * bus_topo_mtx ( void )

Definition at line 878 of file subr_bus.c.

References Giant.

Referenced by bus_topo_lock(), and bus_topo_unlock().

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◆ bus_topo_unlock()

void bus_topo_unlock ( void )

Definition at line 892 of file subr_bus.c.

References bus_topo_mtx().

Referenced by devctl2_ioctl(), and device_sysctl_handler().

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◆ bus_translate_resource()

int bus_translate_resource	(	device_t	dev,
		int	type,
		rman_res_t	start,
		rman_res_t *	newstart
	)

Wrapper function for BUS_TRANSLATE_RESOURCE().

This function simply calls the BUS_TRANSLATE_RESOURCE() method of the parent of dev.

Definition at line 4803 of file subr_bus.c.

References start, and type.

◆ bus_unmap_resource()

int bus_unmap_resource	(	device_t	dev,
		int	type,
		struct resource *	r,
		struct resource_map *	map
	)

Wrapper function for BUS_UNMAP_RESOURCE().

This function simply calls the BUS_UNMAP_RESOURCE() method of the parent of dev.

Definition at line 4861 of file subr_bus.c.

References type.

◆ DECLARE_MODULE()

DECLARE_MODULE	(	rootbus	,
		root_bus_mod	,
		SI_SUB_DRIVERS	,
		SI_ORDER_FIRST
	)

◆ DEFINE_CLASS()

DEFINE_CLASS	(	null	,
		null_methods	,
		0
	)

◆ dev_wired_cache_add()

static struct device_location_node * dev_wired_cache_add	(	device_location_cache_t *	dcp,
		const char *	locator,
		const char *	path
	)

static

Definition at line 6190 of file subr_bus.c.

References device_location_node::dln_locator, device_location_node::dln_path, malloc(), and path.

Referenced by dev_wired_cache_match().

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◆ dev_wired_cache_fini()

void dev_wired_cache_fini ( device_location_cache_t * dcp )

Definition at line 6164 of file subr_bus.c.

References device_location_node::dln_path, and free().

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◆ dev_wired_cache_init()

device_location_cache_t * dev_wired_cache_init ( void )

Definition at line 6153 of file subr_bus.c.

References malloc().

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◆ dev_wired_cache_lookup()

static struct device_location_node * dev_wired_cache_lookup	(	device_location_cache_t *	dcp,
		const char *	locator
	)

static

Definition at line 6177 of file subr_bus.c.

References device_location_node::dln_locator.

Referenced by dev_wired_cache_match().

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◆ dev_wired_cache_match()

bool dev_wired_cache_match	(	device_location_cache_t *	dcp,
		device_t	dev,
		const char *	at
	)

Definition at line 6205 of file subr_bus.c.

References dev_wired_cache_add(), dev_wired_cache_lookup(), device_get_path(), path, and res.

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◆ devadded()

static void devadded ( device_t dev )

static

Definition at line 771 of file subr_bus.c.

References devaddq(), and device_get_nameunit().

Referenced by device_attach().

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◆ devaddq()

static void devaddq	(	const char *	type,
		const char *	what,
		device_t	dev
	)

static

Definition at line 727 of file subr_bus.c.

References bus_child_location(), bus_child_pnpinfo(), devctl_alloc_dei_sb(), devctl_free_dei(), devctl_queue(), device_get_nameunit(), device_get_parent(), sbuf_cat(), sbuf_cpy(), sbuf_finish(), sbuf_putc(), and type.

Referenced by devadded(), devnomatch(), and devremoved().

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◆ devclass_add_device()

static int devclass_add_device	(	devclass_t	dc,
		device_t	dev
	)

static

Add a device to a devclass.

A unit number is allocated for the device (using the device's preferred unit number if any) and the device is registered in the devclass. This allows the device to be looked up by its unit number, e.g. by decoding a dev_t minor number.

Parameters

dc	the devclass to add to
dev	the device to add

Return values

0	success
EEXIST	the requested unit number is already allocated
ENOMEM	memory allocation failure

Definition at line 1733 of file subr_bus.c.

References DEVCLANAME, devclass_alloc_unit(), DEVICENAME, free(), malloc(), PDEBUG, and snprintf().

Referenced by devctl2_ioctl(), device_set_devclass(), device_set_unit(), and make_device().

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◆ devclass_add_driver()

int devclass_add_driver	(	devclass_t	dc,
		driver_t *	driver,
		int	pass,
		devclass_t *	dcp
	)

Add a device driver to a device class.

Add a device driver to a devclass. This is normally called automatically by DRIVER_MODULE(). The BUS_DRIVER_ADDED() method of all devices in the devclass will be called to allow them to attempt to re-probe any unmatched children.

Parameters

dc	the devclass to edit
driver	the driver to register

Definition at line 1140 of file subr_bus.c.

References bus_data_generation_update(), devclass_driver_added(), devclass_find_internal(), device_frozen, DL_DEFERRED_PROBE, driverlink::driver, driver_register_pass(), DRIVERNAME, kobj_class_compile(), malloc(), and PDEBUG.

Referenced by driver_module_handler().

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◆ devclass_alloc_unit()

static int devclass_alloc_unit	(	devclass_t	dc,
		device_t	dev,
		int *	unitp
	)

static

Allocate a unit number.

On entry, *unitp is the desired unit number (or -1 if any will do). The allocated unit number is returned in *unitp.

Parameters

dc	the devclass to allocate from
unitp	points at the location for the allocated unit number

Return values

0	success
EEXIST	the requested unit number is already allocated
ENOMEM	memory allocation failure

Definition at line 1647 of file subr_bus.c.

References bootverbose, DEVCLANAME, device_get_parent(), free(), malloc(), PDEBUG, printf(), and resource_string_value().

Referenced by devclass_add_device().

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◆ devclass_create()

devclass_t devclass_create ( const char * classname )

Create a device class.

If a device class with the name classname exists, return it, otherwise create and return a new device class.

Parameters

classname the devclass name to find or create

Definition at line 1062 of file subr_bus.c.

References devclass_find_internal().

Referenced by devctl2_ioctl().

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◆ devclass_delete_device()

static int devclass_delete_device	(	devclass_t	dc,
		device_t	dev
	)

static

Delete a device from a devclass.

The device is removed from the devclass's device list and its unit number is freed.

Parameters

dc	the devclass to delete from
dev	the device to delete

Return values

0 success

Definition at line 1771 of file subr_bus.c.

References DEVCLANAME, DEVICENAME, free(), panic(), and PDEBUG.

Referenced by devctl2_ioctl(), device_attach(), device_delete_child(), device_detach(), device_set_devclass(), and device_set_unit().

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◆ devclass_delete_driver()

int devclass_delete_driver	(	devclass_t	busclass,
		driver_t *	driver
	)

Delete a device driver from a device class.

Delete a device driver from a devclass. This is normally called automatically by DRIVER_MODULE().

If the driver is currently attached to any devices, devclass_delete_driver() will first attempt to detach from each device. If one of the detach calls fails, the driver will not be deleted.

Parameters

dc	the devclass to edit
driver	the driver to unregister

Definition at line 1285 of file subr_bus.c.

References bus_data_generation_update(), DEVCLANAME, devclass_driver_deleted(), devclass_find(), driverlink::driver, free(), kobj_class_free(), and PDEBUG.

Referenced by driver_module_handler().

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◆ devclass_driver_added()

static void devclass_driver_added	(	devclass_t	dc,
		driver_t *	driver
	)

static

Register that a device driver has been added to a devclass.

Register that a device driver has been added to a devclass. This is called by devclass_add_driver to accomplish the recursive notification of all the children classes of dc, as well as dc. Each layer will have BUS_DRIVER_ADDED() called for all instances of the devclass.

We do a full search here of the devclass list at each iteration level to save storing children-lists in the devclass structure. If we ever move beyond a few dozen devices doing this, we may need to reevaluate...

Parameters

dc	the devclass to edit
driver	the driver that was just added

Definition at line 1099 of file subr_bus.c.

References DC_HAS_CHILDREN, devclass_driver_added(), devclasses, device_is_attached(), driverlink::driver, and parent.

Referenced by devclass_add_driver(), devclass_driver_added(), and device_do_deferred_actions().

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◆ devclass_driver_deleted()

static int devclass_driver_deleted	(	devclass_t	busclass,
		devclass_t	dc,
		driver_t *	driver
	)

static

Register that a device driver has been deleted from a devclass.

Register that a device driver has been removed from a devclass. This is called by devclass_delete_driver to accomplish the recursive notification of all the children classes of busclass, as well as busclass. Each layer will attempt to detach the driver from any devices that are children of the bus's devclass. The function will return an error if a device fails to detach.

We do a full search here of the devclass list at each iteration level to save storing children-lists in the devclass structure. If we ever move beyond a few dozen devices doing this, we may need to reevaluate...

Parameters

busclass	the devclass of the parent bus
dc	the devclass of the driver being deleted
driver	the driver being deleted

Definition at line 1211 of file subr_bus.c.

References DC_HAS_CHILDREN, devclass_driver_deleted(), devclasses, device_detach(), device_frozen, devnomatch(), driverlink::driver, and parent.

Referenced by devclass_delete_driver(), and devclass_driver_deleted().

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◆ devclass_find()

devclass_t devclass_find ( const char * classname )

Find a device class.

If a device class with the name classname exists, return it, otherwise return NULL.

Parameters

classname the devclass name to find

Definition at line 1076 of file subr_bus.c.

References devclass_find_internal().

Referenced by devclass_delete_driver(), devclass_quiesce_driver(), and device_find_child().

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◆ devclass_find_driver_internal()

static driverlink_t devclass_find_driver_internal	(	devclass_t	dc,
		const char *	classname
	)

static

Definition at line 1395 of file subr_bus.c.

References DEVCLANAME, driverlink::driver, and PDEBUG.

Referenced by driver_exists(), and first_matching_driver().

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◆ devclass_find_free_unit()

int devclass_find_free_unit	(	devclass_t	dc,
		int	unit
	)

Find a free unit number in a devclass.

This function searches for the first unused unit number greater that or equal to unit.

Parameters

dc	the devclass to examine
unit	the first unit number to check

Definition at line 1584 of file subr_bus.c.

◆ devclass_find_internal()

static devclass_t devclass_find_internal	(	const char *	classname,
		const char *	parentname,
		int	create
	)

static

Find or create a device class.

If a device class with the name classname exists, return it, otherwise if create is non-zero create and return a new device class.

If parentname is non-NULL, the parent of the devclass is set to the devclass of that name.

Parameters

classname	the devclass name to find or create
parentname	the parent devclass name or `NULL`
create	non-zero to create a devclass

Definition at line 1007 of file subr_bus.c.

References bus_data_generation_update(), DC_HAS_CHILDREN, devclass_find_internal(), devclasses, malloc(), and PDEBUG.

Referenced by devclass_add_driver(), devclass_create(), devclass_find(), devclass_find_internal(), device_set_devclass(), driver_module_handler(), make_device(), and root_bus_module_handler().

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◆ devclass_get_count()

int devclass_get_count ( devclass_t dc )

Get the number of devices in a devclass.

Parameters

dc	the devclass to examine

Definition at line 1546 of file subr_bus.c.

References count.

Referenced by devclass_get_devices().

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◆ devclass_get_device()

device_t devclass_get_device	(	devclass_t	dc,
		int	unit
	)

Find a device given a unit number.

Parameters

dc	the devclass to search
unit	the unit number to search for

Returns: the device with the given unit number or NULL if there is no such device

Definition at line 1429 of file subr_bus.c.

Referenced by devclass_get_softc(), and device_find_child().

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◆ devclass_get_devices()

int devclass_get_devices	(	devclass_t	dc,
		device_t **	devlistp,
		int *	devcountp
	)

Get a list of devices in the devclass.

An array containing a list of all the devices in the given devclass is allocated and returned in *devlistp. The number of devices in the array is returned in *devcountp. The caller should free the array using free(p, M_TEMP), even if *devcountp is 0.

Parameters

dc	the devclass to examine
devlistp	points at location for array pointer return value
devcountp	points at location for array size return value

Return values

0	success
ENOMEM	the array allocation failed

Definition at line 1475 of file subr_bus.c.

References count, devclass_get_count(), and malloc().

Referenced by cpufreq_curr_sysctl().

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◆ devclass_get_drivers()

int devclass_get_drivers	(	devclass_t	dc,
		driver_t ***	listp,
		int *	countp
	)

Get a list of drivers in the devclass.

An array containing a list of pointers to all the drivers in the given devclass is allocated and returned in *listp. The number of drivers in the array is returned in *countp. The caller should free the array using free(p, M_TEMP).

Parameters

dc	the devclass to examine
listp	gives location for array pointer return value
countp	gives location for number of array elements return value

Return values

0	success
ENOMEM	the array allocation failed

Definition at line 1516 of file subr_bus.c.

References count, driverlink::driver, and malloc().

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◆ devclass_get_maxunit()

int devclass_get_maxunit ( devclass_t dc )

Get the maximum unit number used in a devclass.

Note that this is one greater than the highest currently-allocated unit. If a null devclass_t is passed in, -1 is returned to indicate that not even the devclass has been allocated yet.

Parameters

dc	the devclass to examine

Definition at line 1567 of file subr_bus.c.

Referenced by device_find_child().

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◆ devclass_get_name()

const char * devclass_get_name ( devclass_t dc )

Return the name of the devclass.

Definition at line 1414 of file subr_bus.c.

Referenced by device_get_name().

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◆ devclass_get_parent()

devclass_t devclass_get_parent ( devclass_t dc )

Get the parent of a devclass.

Parameters

dc	the devclass to examine

Definition at line 1614 of file subr_bus.c.

◆ devclass_get_softc()

void * devclass_get_softc	(	devclass_t	dc,
		int	unit
	)

Find the softc field of a device given a unit number.

Parameters

dc	the devclass to search
unit	the unit number to search for

Returns: the softc field of the device with the given unit number or NULL if there is no such device

Definition at line 1447 of file subr_bus.c.

References devclass_get_device(), and device_get_softc().

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◆ devclass_get_sysctl_ctx()

struct sysctl_ctx_list * devclass_get_sysctl_ctx ( devclass_t dc )

Definition at line 1620 of file subr_bus.c.

◆ devclass_get_sysctl_tree()

struct sysctl_oid * devclass_get_sysctl_tree ( devclass_t dc )

Definition at line 1626 of file subr_bus.c.

◆ devclass_quiesce_driver()

static int devclass_quiesce_driver	(	devclass_t	busclass,
		driver_t *	driver
	)

static

Quiesces a set of device drivers from a device class.

Quiesce a device driver from a devclass. This is normally called automatically by DRIVER_MODULE().

If the driver is currently attached to any devices, devclass_quiesece_driver() will first attempt to quiesce each device.

Parameters

dc	the devclass to edit
driver	the driver to unregister

Definition at line 1340 of file subr_bus.c.

References DEVCLANAME, devclass_find(), device_quiesce(), driverlink::driver, and PDEBUG.

Referenced by driver_module_handler().

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◆ devclass_set_parent()

void devclass_set_parent	(	devclass_t	dc,
		devclass_t	pdc
	)

Set the parent of a devclass.

The parent class is normally initialised automatically by DRIVER_MODULE().

Parameters

dc	the devclass to edit
pdc	the new parent devclass

Definition at line 1603 of file subr_bus.c.

◆ devclass_sysctl_handler()

static int devclass_sysctl_handler ( SYSCTL_HANDLER_ARGS )

static

Definition at line 222 of file subr_bus.c.

References DEVCLASS_SYSCTL_PARENT, and value.

Referenced by devclass_sysctl_init().

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◆ devclass_sysctl_init()

static void devclass_sysctl_init ( devclass_t dc )

static

Definition at line 238 of file subr_bus.c.

References devclass_sysctl_handler(), DEVCLASS_SYSCTL_PARENT, and sysctl_ctx_init().

Referenced by device_sysctl_init().

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◆ devclose()

static int devclose	(	struct cdev *	dev,
		int	fflag,
		int	devtype,
		struct thread *	td
	)

static

Definition at line 478 of file subr_bus.c.

References dev_softc::async, dev_softc::cv, devsoftc, funsetown(), dev_softc::inuse, dev_softc::mtx, dev_softc::nonblock, and dev_softc::sigio.

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◆ devctl2_init()

static void devctl2_init ( void )

static

Definition at line 6128 of file subr_bus.c.

References devctl2_cdevsw, and make_dev_credf().

Referenced by devinit().

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◆ devctl2_ioctl()

static int devctl2_ioctl	(	struct cdev *	cdev,
		u_long	cmd,
		caddr_t	data,
		int	fflag,
		struct thread *	td
	)

static

Definition at line 5835 of file subr_bus.c.

References bus_child_present(), bus_topo_lock(), bus_topo_unlock(), data, devclass_add_device(), devclass_create(), devclass_delete_device(), device_attach(), device_delete_child(), device_detach(), device_disable(), device_do_deferred_actions(), device_enable(), device_frozen, device_get_parent(), device_get_path(), device_is_alive(), device_is_attached(), device_is_enabled(), device_is_suspended(), device_probe_and_attach(), device_quiesce(), driver_exists(), find_device(), free(), parent, path, priv_check(), resource_disabled(), and resource_unset_value().

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◆ devctl_alloc_dei()

static struct dev_event_info * devctl_alloc_dei ( void )

static

Definition at line 614 of file subr_bus.c.

References devctl_queue_length, dev_softc::devq, devsoftc, dev_softc::mtx, dev_softc::queued, and dev_softc::zone.

Referenced by devctl_alloc_dei_sb().

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◆ devctl_alloc_dei_sb()

static struct dev_event_info * devctl_alloc_dei_sb ( struct sbuf * sb )

static

Definition at line 647 of file subr_bus.c.

References devctl_alloc_dei(), and sbuf_new().

Referenced by devaddq(), and devctl_notify().

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◆ devctl_free_dei()

static void devctl_free_dei ( struct dev_event_info * dei )

static

Definition at line 658 of file subr_bus.c.

References devsoftc, and dev_softc::zone.

Referenced by devaddq(), and devctl_notify().

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◆ devctl_notify()

void devctl_notify	(	const char *	system,
		const char *	subsystem,
		const char *	type,
		const char *	data
	)

Send a 'notification' to userland, using standard ways.

Definition at line 681 of file subr_bus.c.

References data, devctl_alloc_dei_sb(), devctl_free_dei(), devctl_queue(), sbuf_cat(), sbuf_cpy(), sbuf_finish(), sbuf_putc(), and type.

Referenced by coredump(), mount_devctl_event(), notify(), and root_resume().

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◆ devctl_process_running()

bool devctl_process_running ( void )

Return whether the userland process is running.

Definition at line 608 of file subr_bus.c.

References devsoftc, and dev_softc::inuse.

◆ devctl_queue()

static void devctl_queue ( struct dev_event_info * dei )

static

Definition at line 664 of file subr_bus.c.

References dev_softc::async, dev_softc::cv, dev_softc::devq, devsoftc, dev_softc::mtx, pgsigio(), dev_softc::queued, dev_softc::sel, selwakeup(), and dev_softc::sigio.

Referenced by devaddq(), and devctl_notify().

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◆ devctl_safe_quote_sb()

void devctl_safe_quote_sb	(	struct sbuf *	sb,
		const char *	src
	)

safely quotes strings that might have double quotes in them.

The devctl protocol relies on quoted strings having matching quotes. This routine quotes any internal quotes so the resulting string is safe to pass to snprintf to construct, for example pnp info strings.

Parameters

sb	sbuf to place the characters into
src	Original buffer.

Definition at line 850 of file subr_bus.c.

References sbuf_putc(), and src.

Referenced by coredump(), and mount_devctl_event().

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◆ device_add_child()

device_t device_add_child	(	device_t	dev,
		const char *	name,
		int	unit
	)

Create a new device.

This creates a new device and adds it as a child of an existing parent device. The new device will be added after the last existing child with order zero.

Parameters

dev	the device which will be the parent of the new child device
name	devclass name for new device or `NULL` if not specified
unit	unit number for new device or `-1` if not specified

Returns: the new device

Definition at line 1893 of file subr_bus.c.

References device_add_child_ordered(), and name.

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◆ device_add_child_ordered()

device_t device_add_child_ordered	(	device_t	dev,
		u_int	order,
		const char *	name,
		int	unit
	)

Create a new device.

This creates a new device and adds it as a child of an existing parent device. The new device will be added after the last existing child with the same order.

Parameters

dev	the device which will be the parent of the new child device
order	a value which is used to partially sort the children of `dev` - devices created using lower values of `order` appear first in `dev's` list of children
name	devclass name for new device or `NULL` if not specified
unit	unit number for new device or `-1` if not specified

Returns: the new device

Definition at line 1919 of file subr_bus.c.

References bus_data_generation_update(), child, DEVICENAME, make_device(), name, and PDEBUG.

Referenced by bus_generic_add_child(), and device_add_child().

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◆ device_attach()

int device_attach ( device_t dev )

Attach a device driver to a device.

This function is a wrapper around the DEVICE_ATTACH() driver method. In addition to calling DEVICE_ATTACH(), it initialises the device's sysctl tree, optionally prints a description of the device and queues a notification event for user-based device management services.

Normally this function is only called internally from device_probe_and_attach().

Parameters

dev	the device to initialise

Return values

0	success
ENXIO	no driver was found
ENOMEM	memory allocation failure
non-zero	some other unix error code

Definition at line 3015 of file subr_bus.c.

References bootverbose, devadded(), devclass_delete_device(), device_attach(), device_disable(), device_is_quiet(), device_print_child(), device_printf(), device_set_driver(), device_sysctl_fini(), device_sysctl_init(), device_sysctl_update(), printf(), and resource_disabled().

Referenced by devctl2_ioctl(), device_attach(), and device_probe_and_attach().

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◆ device_busy()

void device_busy ( device_t dev )

Increment the busy counter for the device.

Definition at line 2667 of file subr_bus.c.

References device_busy().

Referenced by device_busy().

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◆ device_claim_softc()

void device_claim_softc ( device_t dev )

Claim softc.

This function can be used to let the driver free the automatically allocated softc using "device_free_softc()". This function is useful when the driver is refcounting the softc and the softc cannot be freed when the "device_detach" method is called.

Definition at line 2604 of file subr_bus.c.

◆ device_delete_child()

int device_delete_child	(	device_t	dev,
		device_t	child
	)

Delete a device.

This function deletes a device along with all of its children. If the device currently has a driver attached to it, the device is detached first using device_detach().

Parameters

dev	the parent device
child	the device to delete

Return values

0	success
non-zero	a unit error code describing the error

Definition at line 1971 of file subr_bus.c.

References bus_data_devices, bus_data_generation_update(), child, devclass_delete_device(), device_delete_child(), device_detach(), DEVICENAME, kobj_delete(), and PDEBUG.

Referenced by cpufreq_unregister(), devctl2_ioctl(), device_delete_child(), and device_delete_children().

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◆ device_delete_children()

int device_delete_children ( device_t dev )

Delete all children devices of the given device, if any.

This function deletes all children devices of the given device, if any, using the device_delete_child() function for each device it finds. If a child device cannot be deleted, this function will return an error code.

Parameters

dev	the parent device

Return values

0	success
non-zero	a device would not detach

Definition at line 2015 of file subr_bus.c.

References child, device_delete_child(), DEVICENAME, and PDEBUG.

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◆ device_detach()

int device_detach ( device_t dev )

Detach a driver from a device.

This function is a wrapper around the DEVICE_DETACH() driver method. If the call to DEVICE_DETACH() succeeds, it calls BUS_CHILD_DETACHED() for the parent of dev, queues a notification event for user-based device management services and cleans up the device's sysctl tree.

Parameters

dev	the device to un-initialise

Return values

0	success
ENXIO	no driver was found
ENOMEM	memory allocation failure
non-zero	some other unix error code

Definition at line 3075 of file subr_bus.c.

References bus_topo_assert(), devclass_delete_device(), device_detach(), device_is_quiet(), device_printf(), device_set_driver(), device_sysctl_fini(), device_verbose(), DEVICENAME, devremoved(), and PDEBUG.

Referenced by bus_generic_detach(), bus_helper_reset_prepare(), devclass_driver_deleted(), devctl2_ioctl(), device_delete_child(), and device_detach().

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◆ device_disable()

void device_disable ( device_t dev )

Clear the DF_ENABLED flag for the device.

Definition at line 2658 of file subr_bus.c.

Referenced by devctl2_ioctl(), and device_attach().

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◆ device_do_deferred_actions()

static void device_do_deferred_actions ( void )

static

Definition at line 5782 of file subr_bus.c.

References bus_data_generation_update(), devclass_driver_added(), devclasses, device_gen_nomatch(), DL_DEFERRED_PROBE, driverlink::driver, and root_bus.

Referenced by devctl2_ioctl().

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◆ device_enable()

void device_enable ( device_t dev )

Set the DF_ENABLED flag for the device.

Definition at line 2649 of file subr_bus.c.

Referenced by devctl2_ioctl().

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◆ device_find_child()

device_t device_find_child	(	device_t	dev,
		const char *	classname,
		int	unit
	)

Find a device given a unit number.

This is similar to devclass_get_devices() but only searches for devices which have dev as a parent.

Parameters

dev	the parent device to search
unit	the unit number to search for. If the unit is -1, return the first child of `dev` which has name `classname` (that is, the one with the lowest unit.)

Returns: the device with the given unit number or NULL if there is no such device

Definition at line 2049 of file subr_bus.c.

References child, devclass_find(), devclass_get_device(), and devclass_get_maxunit().

Referenced by cpufreq_register(), and cpufreq_unregister().

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◆ device_free_softc()

void device_free_softc ( void * softc )

Free claimed softc.

Most drivers do not need to use this since the softc is freed automatically when the driver is detached.

Definition at line 2590 of file subr_bus.c.

References free().

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◆ device_gen_nomatch()

static void device_gen_nomatch ( device_t dev )

static

Definition at line 5765 of file subr_bus.c.

References child, device_gen_nomatch(), and devnomatch().

Referenced by device_do_deferred_actions(), and device_gen_nomatch().

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◆ device_get_children()

int device_get_children	(	device_t	dev,
		device_t **	devlistp,
		int *	devcountp
	)

Get a list of children of a device.

An array containing a list of all the children of the given device is allocated and returned in *devlistp. The number of devices in the array is returned in *devcountp. The caller should free the array using free(p, M_TEMP).

Parameters

dev	the device to examine
devlistp	points at location for array pointer return value
devcountp	points at location for array size return value

Return values

0	success
ENOMEM	the array allocation failed

Definition at line 2285 of file subr_bus.c.

References child, count, and malloc().

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◆ device_get_desc()

const char * device_get_desc ( device_t dev )

Return the device's description string.

Definition at line 2373 of file subr_bus.c.

Referenced by bus_print_child_header().

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◆ device_get_devclass()

devclass_t device_get_devclass ( device_t dev )

Return the current devclass for the device or NULL if there is none.

Definition at line 2332 of file subr_bus.c.

Referenced by device_set_unit().

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◆ device_get_driver()

driver_t * device_get_driver ( device_t dev )

Return the current driver for the device or NULL if there is no driver currently attached.

Definition at line 2322 of file subr_bus.c.

◆ device_get_flags()

uint32_t device_get_flags ( device_t dev )

Return the device's flags.

Definition at line 2382 of file subr_bus.c.

◆ device_get_ivars()

void * device_get_ivars ( device_t dev )

Get the device's ivars field.

The ivars field is used by the parent device to store per-device state (e.g. the physical location of the device or a list of resources).

Definition at line 2620 of file subr_bus.c.

◆ device_get_name()

const char * device_get_name ( device_t dev )

Return the name of the device's devclass or NULL if there is none.

Definition at line 2342 of file subr_bus.c.

References devclass_get_name().

Referenced by bus_enumerate_hinted_children(), device_log(), device_print_prettyname(), device_printf(), device_probe(), device_probe_child(), intr_alloc_msi(), intr_alloc_msix(), intr_map_msi(), intr_pic_claim_root(), intr_release_msi(), intr_release_msix(), intr_resolve_irq(), and sysctl_rman().

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◆ device_get_nameunit()

const char * device_get_nameunit ( device_t dev )

Return a string containing the device's devclass name followed by an ascii representation of the device's unit number (e.g. "foo2").

Definition at line 2355 of file subr_bus.c.

Referenced by bus_enumerate_hinted_children(), bus_generic_get_device_path(), bus_print_child_footer(), bus_print_child_header(), cf_get_method(), cf_set_method(), cpufreq_add_freq_driver_sysctl(), cpufreq_add_levels(), cpufreq_attach(), cpufreq_detach(), cpufreq_dup_set(), devadded(), devaddq(), devremoved(), intr_msi_register(), intr_pic_claim_root(), intr_pic_register(), intr_setup_irq(), resource_list_alloc(), and rman_reserve_resource_bound().

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◆ device_get_parent()

device_t device_get_parent ( device_t dev )

Return the parent of a device.

Definition at line 2263 of file subr_bus.c.

Referenced by bus_child_location(), bus_child_pnpinfo(), bus_child_present(), bus_delete_resource(), bus_generic_child_present(), bus_generic_get_device_path(), bus_generic_get_property(), bus_generic_rl_alloc_resource(), bus_generic_rl_release_resource(), bus_get_bus_tag(), bus_get_cpus(), bus_get_dma_tag(), bus_get_domain(), bus_get_resource(), bus_get_resource_count(), bus_get_resource_start(), bus_set_resource(), cpufreq_attach(), cpufreq_register(), cpufreq_settings_changed(), cpufreq_unregister(), devaddq(), devclass_alloc_unit(), devctl2_ioctl(), device_get_path(), device_get_property(), resource_list_alloc(), resource_list_release(), resource_list_reserve(), and resource_list_unreserve().

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◆ device_get_path()

static char * device_get_path	(	device_t	dev,
		const char *	locator
	)

static

Definition at line 5812 of file subr_bus.c.

References device_get_parent(), malloc(), sbuf_data(), sbuf_delete(), sbuf_finish(), sbuf_len(), and sbuf_new().

Referenced by dev_wired_cache_match(), and devctl2_ioctl().

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◆ device_get_property()

ssize_t device_get_property	(	device_t	dev,
		const char *	prop,
		void *	val,
		size_t	sz,
		device_property_type_t	type
	)

Definition at line 2720 of file subr_bus.c.

References bus, device_get_parent(), and type.

Referenced by device_has_property().

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◆ device_get_softc()

void * device_get_softc ( device_t dev )

Return the device's softc field.

The softc is allocated and zeroed when a driver is attached, based on the size field of the driver.

Definition at line 2560 of file subr_bus.c.

Referenced by cf_get_method(), cf_levels_method(), cf_set_method(), cpufreq_add_freq_driver_sysctl(), cpufreq_add_levels(), cpufreq_attach(), cpufreq_detach(), cpufreq_register(), cpufreq_unregister(), and devclass_get_softc().

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◆ device_get_state()

device_state_t device_get_state ( device_t dev )

Return the device's state.

Definition at line 2640 of file subr_bus.c.

Referenced by bus_helper_reset_prepare().

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◆ device_get_sysctl_ctx()

struct sysctl_ctx_list * device_get_sysctl_ctx ( device_t dev )

Definition at line 2388 of file subr_bus.c.

Referenced by cpufreq_register().

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◆ device_get_sysctl_tree()

struct sysctl_oid * device_get_sysctl_tree ( device_t dev )

Definition at line 2394 of file subr_bus.c.

Referenced by cpufreq_add_freq_driver_sysctl(), cpufreq_attach(), and cpufreq_register().

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◆ device_get_unit()

int device_get_unit ( device_t dev )

Return the device's unit number.

Definition at line 2364 of file subr_bus.c.

Referenced by cpufreq_register(), cpufreq_settings_changed(), device_log(), device_print_prettyname(), device_printf(), and sysctl_rman().

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◆ device_has_property()

bool device_has_property	(	device_t	dev,
		const char *	prop
	)

Definition at line 2745 of file subr_bus.c.

References device_get_property().

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◆ device_has_quiet_children()

int device_has_quiet_children ( device_t dev )

Return non-zero if the DF_QUIET_CHIDLREN flag is set on the device.

Definition at line 2754 of file subr_bus.c.

Referenced by make_device().

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◆ device_is_alive()

int device_is_alive ( device_t dev )

Return non-zero if the device was successfully probed.

Definition at line 2781 of file subr_bus.c.

Referenced by devctl2_ioctl(), and device_print_child().

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◆ device_is_attached()

int device_is_attached ( device_t dev )

Return non-zero if the device currently has a driver attached to it.

Definition at line 2791 of file subr_bus.c.

Referenced by cf_set_method(), cpufreq_add_levels(), devclass_driver_added(), and devctl2_ioctl().

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◆ device_is_devclass_fixed()

bool device_is_devclass_fixed ( device_t dev )

Query the device to determine if it's of a fixed devclass.

See also: device_set_devclass_fixed()

Definition at line 2860 of file subr_bus.c.

◆ device_is_enabled()

int device_is_enabled ( device_t dev )

Return non-zero if the DF_ENABLED flag is set on the device.

Definition at line 2772 of file subr_bus.c.

Referenced by devctl2_ioctl().

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◆ device_is_quiet()

int device_is_quiet ( device_t dev )

Return non-zero if the DF_QUIET flag is set on the device.

Definition at line 2763 of file subr_bus.c.

Referenced by device_attach(), and device_detach().

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◆ device_is_suspended()

int device_is_suspended ( device_t dev )

Return non-zero if the device is currently suspended.

Definition at line 2800 of file subr_bus.c.

Referenced by devctl2_ioctl().

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◆ device_log()

int device_log	(	device_t	dev,
		int	pri,
		const char *	fmt,
			...
	)

Print the name of the device followed by a colon, a space and the result of calling log() with the value of fmt and the following arguments.

Returns: the number of characters printed

Definition at line 2460 of file subr_bus.c.

References buf, device_get_name(), device_get_unit(), log(), name, sbuf_cat(), sbuf_data(), sbuf_delete(), sbuf_finish(), sbuf_len(), sbuf_new(), sbuf_printf(), and sbuf_vprintf().

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◆ device_lookup_by_name()

device_t device_lookup_by_name ( const char * name )

Definition at line 5706 of file subr_bus.c.

References bus_data_devices, and name.

Referenced by find_device().

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◆ device_print_child()

static int device_print_child	(	device_t	dev,
		device_t	child
	)

static

Print a description of a device.

Definition at line 1864 of file subr_bus.c.

References child, device_is_alive(), and device_printf().

Referenced by device_attach().

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◆ device_print_prettyname()

int device_print_prettyname ( device_t dev )

Print the name of the device followed by a colon and a space.

Returns: the number of characters printed

Definition at line 2405 of file subr_bus.c.

References device_get_name(), device_get_unit(), name, and printf().

Referenced by device_probe().

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◆ device_printf()

int device_printf	(	device_t	dev,
		const char *	fmt,
			...
	)

Print the name of the device followed by a colon, a space and the result of calling vprintf() with the value of fmt and the following arguments.

Returns: the number of characters printed

Definition at line 2422 of file subr_bus.c.

References buf, device_get_name(), device_get_unit(), name, sbuf_cat(), sbuf_delete(), sbuf_finish(), sbuf_new(), sbuf_printf(), sbuf_printf_drain(), sbuf_set_drain(), and sbuf_vprintf().

Referenced by _gone_in_dev(), bus_print_child_header(), bus_setup_intr(), cf_set_method(), clock_dbgprint_hdr(), clock_register_flags(), cpufreq_unregister(), device_attach(), device_detach(), device_print_child(), intr_pic_claim_root(), read_clocks(), resource_list_alloc(), resource_list_release_active(), and settime_task_func().

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◆ device_probe()

int device_probe ( device_t dev )

Probe a device, and return this status.

This function is the core of the device autoconfiguration system. Its purpose is to select a suitable driver for a device and then call that driver to initialise the hardware appropriately. The driver is selected by calling the DEVICE_PROBE() method of a set of candidate drivers and then choosing the driver which returned the best value. This driver is then attached to the device using device_attach().

The set of suitable drivers is taken from the list of drivers in the parent device's devclass. If the device was originally created with a specific class name (see device_add_child()), only drivers with that name are probed, otherwise all drivers in the devclass are probed. If no drivers return successful probe values in the parent devclass, the search continues in the parent of that devclass (see devclass_get_parent()) if any.

Parameters

dev	the device to initialise

Return values

0	success
ENXIO	no driver was found
ENOMEM	memory allocation failure
non-zero	some other unix error code
-1	Device already attached

Definition at line 2943 of file subr_bus.c.

References bootverbose, bus_current_pass, bus_topo_assert(), device_get_name(), device_print_prettyname(), device_probe_child(), devnomatch(), and printf().

Referenced by device_probe_and_attach().

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◆ device_probe_and_attach()

int device_probe_and_attach ( device_t dev )

Probe a device and attach a driver if possible.

calls device_probe() and attaches if that was successful.

Definition at line 2977 of file subr_bus.c.

References bus_topo_assert(), device_attach(), and device_probe().

Referenced by bus_generic_attach(), bus_generic_driver_added(), bus_generic_new_pass(), bus_helper_reset_post(), bus_helper_reset_prepare(), bus_helper_reset_prepare_rollback(), cpufreq_register(), and devctl2_ioctl().

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◆ device_probe_child()

int device_probe_child	(	device_t	dev,
		device_t	child
	)

Definition at line 2103 of file subr_bus.c.

References bus_current_pass, bus_data_generation_update(), bus_topo_assert(), child, device_get_name(), device_set_devclass(), device_set_driver(), device_verbose(), driverlink::driver, DRIVERNAME, first_matching_driver(), next_matching_driver(), panic(), PDEBUG, printf(), resource_int_value(), and result.

Referenced by device_probe().

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◆ device_quiesce()

int device_quiesce ( device_t dev )

Tells a driver to quiesce itself.

This function is a wrapper around the DEVICE_QUIESCE() driver method. If the call to DEVICE_QUIESCE() succeeds.

Parameters

dev	the device to quiesce

Return values

0	success
ENXIO	no driver was found
ENOMEM	memory allocation failure
non-zero	some other unix error code

Definition at line 3131 of file subr_bus.c.

References DEVICENAME, and PDEBUG.

Referenced by devclass_quiesce_driver(), and devctl2_ioctl().

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◆ device_quiet()

void device_quiet ( device_t dev )

Set the DF_QUIET flag for the device.

Definition at line 2696 of file subr_bus.c.

Referenced by cpufreq_register().

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◆ device_quiet_children()

void device_quiet_children ( device_t dev )

Set the DF_QUIET_CHILDREN flag for the device.

Definition at line 2705 of file subr_bus.c.

◆ device_set_desc()

void device_set_desc	(	device_t	dev,
		const char *	desc
	)

Set the device's description.

The value of desc should be a string constant that will not change (at least until the description is changed in a subsequent call to device_set_desc() or device_set_desc_copy()).

Definition at line 2527 of file subr_bus.c.

References device_set_desc_internal().

Referenced by device_set_driver().

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◆ device_set_desc_copy()

void device_set_desc_copy	(	device_t	dev,
		const char *	desc
	)

Set the device's description.

The string pointed to by desc is copied. Use this function if the device description is generated, (e.g. with sprintf()).

Definition at line 2539 of file subr_bus.c.

References device_set_desc_internal().

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◆ device_set_desc_internal()

static void device_set_desc_internal	(	device_t	dev,
		const char *	desc,
		int	copy
	)

static

Definition at line 2497 of file subr_bus.c.

References bus_data_generation_update(), free(), and malloc().

Referenced by device_set_desc(), and device_set_desc_copy().

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◆ device_set_devclass()

int device_set_devclass	(	device_t	dev,
		const char *	classname
	)

Set the devclass of a device.

See also: devclass_add_device().

Definition at line 2810 of file subr_bus.c.

References bus_data_generation_update(), devclass_add_device(), devclass_delete_device(), devclass_find_internal(), and printf().

Referenced by device_probe_child(), and device_set_devclass_fixed().

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◆ device_set_devclass_fixed()

int device_set_devclass_fixed	(	device_t	dev,
		const char *	classname
	)

Set the devclass of a device and mark the devclass fixed.

See also: device_set_devclass()

Definition at line 2841 of file subr_bus.c.

References device_set_devclass().

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◆ device_set_driver()

int device_set_driver	(	device_t	dev,
		driver_t *	driver
	)

Set the driver of a device.

Return values

0	success
EBUSY	the device already has a driver attached
ENOMEM	a memory allocation failure occurred

Definition at line 2873 of file subr_bus.c.

References bus_data_generation_update(), bus_get_domain(), device_set_desc(), domain, free(), kobj_delete(), kobj_init(), and malloc_domainset().

Referenced by device_attach(), device_detach(), and device_probe_child().

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◆ device_set_flags()

void device_set_flags	(	device_t	dev,
		uint32_t	flags
	)

Set the device's flags.

Definition at line 2548 of file subr_bus.c.

References flags.

◆ device_set_ivars()

void device_set_ivars	(	device_t	dev,
		void *	ivars
	)

Set the device's ivars field.

Definition at line 2630 of file subr_bus.c.

◆ device_set_softc()

void device_set_softc	(	device_t	dev,
		void *	softc
	)

Set the device's softc field.

Most drivers do not need to use this since the softc is allocated automatically when the driver is attached.

Definition at line 2572 of file subr_bus.c.

References free().

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◆ device_set_unit()

int device_set_unit	(	device_t	dev,
		int	unit
	)

Set the unit number of a device.

This function can be used to override the unit number used for a device (e.g. to wire a device to a pre-configured unit number).

Definition at line 3165 of file subr_bus.c.

References bus_data_generation_update(), devclass_add_device(), devclass_delete_device(), and device_get_devclass().

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◆ device_shutdown()

int device_shutdown ( device_t dev )

Notify a device of system shutdown.

This function calls the DEVICE_SHUTDOWN() driver method if the device currently has an attached driver.

Returns: the value returned by DEVICE_SHUTDOWN()

Definition at line 3151 of file subr_bus.c.

Referenced by bus_generic_shutdown(), and root_bus_module_handler().

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◆ device_sysctl_fini()

static void device_sysctl_fini ( device_t dev )

static

Definition at line 353 of file subr_bus.c.

References sysctl_ctx_free().

Referenced by device_attach(), and device_detach().

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◆ device_sysctl_handler()

static int device_sysctl_handler ( SYSCTL_HANDLER_ARGS )

static

Definition at line 262 of file subr_bus.c.

References bus_child_location(), bus_child_pnpinfo(), bus_topo_lock(), bus_topo_unlock(), DEVICE_SYSCTL_DESC, DEVICE_SYSCTL_DRIVER, DEVICE_SYSCTL_LOCATION, DEVICE_SYSCTL_PARENT, DEVICE_SYSCTL_PNPINFO, sbuf_cat(), sbuf_clear_flags(), sbuf_delete(), sbuf_finish(), and sbuf_new_for_sysctl().

Referenced by device_sysctl_init().

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◆ device_sysctl_init()

static void device_sysctl_init ( device_t dev )

static

Definition at line 299 of file subr_bus.c.

References bus_get_domain(), devclass_sysctl_init(), DEVICE_SYSCTL_DESC, DEVICE_SYSCTL_DRIVER, device_sysctl_handler(), DEVICE_SYSCTL_LOCATION, DEVICE_SYSCTL_PARENT, DEVICE_SYSCTL_PNPINFO, domain, and sysctl_ctx_init().

Referenced by device_attach().

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◆ device_sysctl_update()

static void device_sysctl_update ( device_t dev )

static

Definition at line 343 of file subr_bus.c.

References sysctl_rename_oid().

Referenced by device_attach().

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◆ device_unbusy()

void device_unbusy ( device_t dev )

Decrement the busy counter for the device.

Definition at line 2682 of file subr_bus.c.

References device_unbusy().

Referenced by device_unbusy().

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◆ device_verbose()

void device_verbose ( device_t dev )

Clear the DF_QUIET flag for the device.

Definition at line 2714 of file subr_bus.c.

Referenced by device_detach(), and device_probe_child().

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◆ devinit()

static void devinit ( void )

static

Definition at line 432 of file subr_bus.c.

References dev_softc::cv, cv_init(), dev_cdevsw, devctl2_init(), devctl_dev, devctl_queue_length, dev_softc::devq, devsoftc, knlist_init_mtx(), make_dev_credf(), dev_softc::mtx, dev_softc::sel, and dev_softc::zone.

Referenced by root_bus_module_handler().

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◆ devioctl()

static int devioctl	(	struct cdev *	dev,
		u_long	cmd,
		caddr_t	data,
		int	fflag,
		struct thread *	td
	)

static

Definition at line 529 of file subr_bus.c.

References dev_softc::async, data, devsoftc, fgetown(), fsetown(), dev_softc::nonblock, and dev_softc::sigio.

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◆ devkqfilter()

static int devkqfilter	(	struct cdev *	dev,
		struct knote *	kn
	)

static

Definition at line 578 of file subr_bus.c.

References devctl_rfiltops, devsoftc, knlist_add(), and dev_softc::sel.

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◆ devnomatch()

static void devnomatch ( device_t dev )

static

Definition at line 794 of file subr_bus.c.

References devaddq().

Referenced by devclass_driver_deleted(), device_gen_nomatch(), and device_probe().

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◆ devopen()

static int devopen	(	struct cdev *	dev,
		int	oflags,
		int	devtype,
		struct thread *	td
	)

static

Definition at line 464 of file subr_bus.c.

References devsoftc, dev_softc::inuse, and dev_softc::mtx.

◆ devpoll()

static int devpoll	(	struct cdev *	dev,
		int	events,
		struct thread *	td
	)

static

Definition at line 561 of file subr_bus.c.

References dev_softc::devq, devsoftc, dev_softc::mtx, dev_softc::sel, and selrecord().

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◆ devread()

static int devread	(	struct cdev *	dev,
		struct uio *	uio,
		int	ioflag
	)

static

Definition at line 499 of file subr_bus.c.

References dev_softc::cv, dev_softc::devq, devsoftc, dev_softc::mtx, dev_softc::nonblock, dev_softc::queued, uiomove(), and dev_softc::zone.

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◆ devremoved()

static void devremoved ( device_t dev )

static

Definition at line 781 of file subr_bus.c.

References devaddq(), and device_get_nameunit().

Referenced by device_detach().

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◆ driver_exists()

static bool driver_exists	(	device_t	bus,
		const char *	driver
	)

static

Definition at line 5753 of file subr_bus.c.

References bus, and devclass_find_driver_internal().

Referenced by devctl2_ioctl().

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◆ driver_module_handler()

int driver_module_handler	(	module_t	mod,
		int	what,
		void *	arg
	)

Module handler for registering device drivers.

This module handler is used to automatically register device drivers when modules are loaded. If what is MOD_LOAD, it calls devclass_add_driver() for the driver described by the driver_module_data structure pointed to by arg

Definition at line 5347 of file subr_bus.c.

References devclass_add_driver(), devclass_delete_driver(), devclass_find_internal(), devclass_quiesce_driver(), DRIVERNAME, and PDEBUG.

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◆ driver_register_pass()

static void driver_register_pass ( struct driverlink * new )

static

Register the pass level of a new driver attachment.

Register a new driver attachment's pass level. If no driver attachment with the same pass level has been added, then new will be added to the global passes list.

Parameters

new	the new driver attachment

Definition at line 916 of file subr_bus.c.

References bus_current_pass, and passes.

Referenced by devclass_add_driver().

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◆ EVENTHANDLER_LIST_DEFINE() [1/3]

EVENTHANDLER_LIST_DEFINE ( dev_lookup )

◆ EVENTHANDLER_LIST_DEFINE() [2/3]

EVENTHANDLER_LIST_DEFINE ( device_attach )

◆ EVENTHANDLER_LIST_DEFINE() [3/3]

EVENTHANDLER_LIST_DEFINE ( device_detach )

◆ filt_devctl_detach()

static void filt_devctl_detach ( struct knote * kn )

static

Definition at line 592 of file subr_bus.c.

References devsoftc, knlist_remove(), and dev_softc::sel.

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◆ filt_devctl_read()

static int filt_devctl_read	(	struct knote *	kn,
		long	hint
	)

static

Definition at line 598 of file subr_bus.c.

References devsoftc, and dev_softc::queued.

◆ find_device()

static int find_device	(	struct devreq *	req,
		device_t *	devp
	)

static

Definition at line 5723 of file subr_bus.c.

References device_lookup_by_name().

Referenced by devctl2_ioctl().

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◆ first_matching_driver()

static driverlink_t first_matching_driver	(	devclass_t	dc,
		device_t	dev
	)

static

Definition at line 2076 of file subr_bus.c.

References devclass_find_driver_internal().

Referenced by device_probe_child().

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◆ gone_panic()

static void gone_panic	(	int	major,
		int	running,
		const char *	msg
	)

static

Definition at line 6243 of file subr_bus.c.

References obsolete_panic, and panic().

Referenced by _gone_in(), and _gone_in_dev().

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◆ make_device()

static device_t make_device	(	device_t	parent,
		const char *	name,
		int	unit
	)

static

Make a new device and add it as a child of parent.

Parameters

parent	the parent of the new device
name	the devclass name of the new device or `NULL` to leave the devclass unspecified @parem unit the unit number of the new device of `-1` to leave the unit number unspecified

Returns: the new device

Definition at line 1803 of file subr_bus.c.

References bus_data_devices, bus_data_generation_update(), devclass_add_device(), devclass_find_internal(), device_has_quiet_children(), DEVICENAME, kobj_delete(), kobj_init(), malloc(), name, parent, PDEBUG, and printf().

Referenced by device_add_child_ordered(), and root_bus_module_handler().

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◆ MALLOC_DEFINE() [1/2]

static MALLOC_DEFINE	(	M_BUS	,
		"bus"	,
		"Bus data structures"
	)

static

◆ MALLOC_DEFINE() [2/2]

static MALLOC_DEFINE	(	M_BUS_SC	,
		"bus-sc"	,
		"Bus data	structures,
		softc"
	)

static

◆ next_matching_driver()

static driverlink_t next_matching_driver	(	devclass_t	dc,
		device_t	dev,
		driverlink_t	last
	)

static

Definition at line 2087 of file subr_bus.c.

References driverlink::driver.

Referenced by device_probe_child().

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◆ resource_init_map_request_impl()

void resource_init_map_request_impl	(	struct resource_map_request *	args,
		size_t	sz
	)

Definition at line 3193 of file subr_bus.c.

◆ resource_list_add()

struct resource_list_entry * resource_list_add	(	struct resource_list *	rl,
		int	type,
		int	rid,
		rman_res_t	start,
		rman_res_t	end,
		rman_res_t	count
	)

Add or modify a resource entry.

If an existing entry exists with the same type and rid, it will be modified using the given values of start, end and count. If no entry exists, a new one will be created using the given values. The resource list entry that matches is then returned.

Parameters

rl	the resource list to edit
type	the resource entry type (e.g. SYS_RES_MEMORY)
rid	the resource identifier
start	the start address of the resource
end	the end address of the resource
count	XXX end-start+1

Definition at line 3274 of file subr_bus.c.

References count, malloc(), panic(), resource_list_find(), start, and type.

Referenced by bus_generic_rl_set_resource(), and resource_list_add_next().

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◆ resource_list_add_next()

int resource_list_add_next	(	struct resource_list *	rl,
		int	type,
		rman_res_t	start,
		rman_res_t	end,
		rman_res_t	count
	)

Add a resource entry.

This function adds a resource entry using the given type, start, end and count values. A rid value is chosen by searching sequentially for the first unused rid starting at zero.

Parameters

rl	the resource list to edit
type	the resource entry type (e.g. SYS_RES_MEMORY)
start	the start address of the resource
end	the end address of the resource
count	XXX end-start+1

Definition at line 3246 of file subr_bus.c.

References count, resource_list_add(), resource_list_find(), start, and type.

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◆ resource_list_alloc()

struct resource * resource_list_alloc	(	struct resource_list *	rl,
		device_t	bus,
		device_t	child,
		int	type,
		int *	rid,
		rman_res_t	start,
		rman_res_t	end,
		rman_res_t	count,
		u_int	flags
	)

Helper function for implementing BUS_ALLOC_RESOURCE()

Implement BUS_ALLOC_RESOURCE() by looking up a resource from the list and passing the allocation up to the parent of bus. This assumes that the first entry of device_get_ivars(child) is a struct resource_list. This also handles 'passthrough' allocations where a child is a remote descendant of bus by passing the allocation up to the parent of bus.

Typically, a bus driver would store a list of child resources somewhere in the child device's ivars (see device_get_ivars()) and its implementation of BUS_ALLOC_RESOURCE() would find that list and then call resource_list_alloc() to perform the allocation.

Parameters

rl	the resource list to allocate from
bus	the parent device of `child`
child	the device which is requesting an allocation
type	the type of resource to allocate
rid	a pointer to the resource identifier
start	hint at the start of the resource range - pass `0` for any start address
end	hint at the end of the resource range - pass `~0` for any end address
count	hint at the size of range required - pass `1` for any size
flags	any extra flags to control the resource allocation - see `RF_XXX` flags in <sys/rman.h> for details

Returns: the resource which was allocated or NULL if no resource could be allocated

Definition at line 3489 of file subr_bus.c.

References bus, bus_activate_resource(), child, count, device_get_nameunit(), device_get_parent(), device_printf(), flags, resource_list_find(), rman_get_end(), rman_get_start(), start, and type.

Referenced by bus_generic_rl_alloc_resource(), and resource_list_reserve().

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◆ resource_list_busy()

int resource_list_busy	(	struct resource_list *	rl,
		int	type,
		int	rid
	)

Determine if a resource entry is busy.

Returns true if a resource entry is busy meaning that it has an associated resource that is not an unallocated "reserved" resource.

Parameters

rl	the resource list to search
type	the resource entry type (e.g. SYS_RES_MEMORY)
rid	the resource identifier

Returns: Non-zero if the entry is busy, zero otherwise.

Definition at line 3314 of file subr_bus.c.

References resource_list_find(), rman_get_flags(), and type.

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◆ resource_list_delete()

void resource_list_delete	(	struct resource_list *	rl,
		int	type,
		int	rid
	)

Delete a resource entry.

Parameters

rl	the resource list to edit
type	the resource entry type (e.g. SYS_RES_MEMORY)
rid	the resource identifier

Definition at line 3383 of file subr_bus.c.

References free(), panic(), resource_list_find(), and type.

Referenced by bus_generic_rl_delete_resource().

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◆ resource_list_find()

struct resource_list_entry * resource_list_find	(	struct resource_list *	rl,
		int	type,
		int	rid
	)

Find a resource entry by type and rid.

Parameters

rl	the resource list to search
type	the resource entry type (e.g. SYS_RES_MEMORY)
rid	the resource identifier

Returns: the resource entry pointer or NULL if there is no such entry.

Definition at line 3364 of file subr_bus.c.

References type.

Referenced by bus_generic_rl_get_resource(), resource_list_add(), resource_list_add_next(), resource_list_alloc(), resource_list_busy(), resource_list_delete(), resource_list_release(), resource_list_reserve(), resource_list_reserved(), and resource_list_unreserve().

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◆ resource_list_free()

void resource_list_free ( struct resource_list * rl )

Reclaim memory used by a resource list.

This function frees the memory for all resource entries on the list (if any).

Parameters

rl	the resource list to free

Definition at line 3220 of file subr_bus.c.

References free(), and panic().

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◆ resource_list_init()

void resource_list_init ( struct resource_list * rl )

Initialise a resource list.

Parameters

rl	the resource list to initialise

Definition at line 3206 of file subr_bus.c.

◆ resource_list_print_type()

int resource_list_print_type	(	struct resource_list *	rl,
		const char *	name,
		int	type,
		const char *	format
	)

Print a description of resources in a resource list.

Print all resources of a specified type, for use in BUS_PRINT_CHILD(). The name is printed if at least one resource of the given type is available. The format is used to print resource start and end.

Parameters

rl	the resource list to print
name	the name of `type`, e.g. `"memory"`
type	type type of resource entry to print
format	printf(9) format string to print resource start and end values

Returns: the number of characters printed

Definition at line 3699 of file subr_bus.c.

References name, printf(), and type.

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◆ resource_list_purge()

void resource_list_purge ( struct resource_list * rl )

Releases all the resources in a list.

Parameters

rl	The resource list to purge.

Returns: nothing

Definition at line 3734 of file subr_bus.c.

References bus_release_resource(), free(), and rman_get_device().

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◆ resource_list_release()

int resource_list_release	(	struct resource_list *	rl,
		device_t	bus,
		device_t	child,
		int	type,
		int	rid,
		struct resource *	res
	)

Helper function for implementing BUS_RELEASE_RESOURCE()

Implement BUS_RELEASE_RESOURCE() using a resource list. Normally used with resource_list_alloc().

Parameters

rl	the resource list which was allocated from
bus	the parent device of `child`
child	the device which is requesting a release
type	the type of resource to release
rid	the resource identifier
res	the resource to release

Return values

0	success
non-zero	a standard unix error code indicating what error condition prevented the operation

Definition at line 3562 of file subr_bus.c.

References bus, bus_deactivate_resource(), child, device_get_parent(), panic(), res, resource_list_find(), rman_get_flags(), and type.

Referenced by bus_generic_rl_release_resource(), resource_list_release_active(), and resource_list_unreserve().

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◆ resource_list_release_active()

int resource_list_release_active	(	struct resource_list *	rl,
		device_t	bus,
		device_t	child,
		int	type
	)

Release all active resources of a given type.

Release all active resources of a specified type. This is intended to be used to cleanup resources leaked by a driver after detach or a failed attach.

Parameters

rl	the resource list which was allocated from
bus	the parent device of `child`
child	the device whose active resources are being released
type	the type of resources to release

Return values

0	success
EBUSY	at least one resource was active

Definition at line 3619 of file subr_bus.c.

References bus, child, device_printf(), resource_list_release(), rman_get_rid(), and type.

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◆ resource_list_reserve()

struct resource * resource_list_reserve	(	struct resource_list *	rl,
		device_t	bus,
		device_t	child,
		int	type,
		int *	rid,
		rman_res_t	start,
		rman_res_t	end,
		rman_res_t	count,
		u_int	flags
	)

Allocate a reserved resource.

This can be used by buses to force the allocation of resources that are always active in the system even if they are not allocated by a driver (e.g. PCI BARs). This function is usually called when adding a new child to the bus. The resource is allocated from the parent bus when it is reserved. The resource list entry is marked with RLE_RESERVED to note that it is a reserved resource.

Subsequent attempts to allocate the resource with resource_list_alloc() will succeed the first time and will set RLE_ALLOCATED to note that it has been allocated. When a reserved resource that has been allocated is released with resource_list_release() the resource RLE_ALLOCATED is cleared, but the actual resource remains allocated. The resource can be released to the parent bus by calling resource_list_unreserve().

Parameters

rl	the resource list to allocate from
bus	the parent device of `child`
child	the device for which the resource is being reserved
type	the type of resource to allocate
rid	a pointer to the resource identifier
start	hint at the start of the resource range - pass `0` for any start address
end	hint at the end of the resource range - pass `~0` for any end address
count	hint at the size of range required - pass `1` for any size
flags	any extra flags to control the resource allocation - see `RF_XXX` flags in <sys/rman.h> for details

Returns: the resource which was allocated or NULL if no resource could be allocated

Definition at line 3432 of file subr_bus.c.

References bus, child, count, device_get_parent(), flags, panic(), resource_list_alloc(), resource_list_find(), start, and type.

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◆ resource_list_reserved()

int resource_list_reserved	(	struct resource_list *	rl,
		int	type,
		int	rid
	)

Determine if a resource entry is reserved.

Returns true if a resource entry is reserved meaning that it has an associated "reserved" resource. The resource can either be allocated or unallocated.

Parameters

rl	the resource list to search
type	the resource entry type (e.g. SYS_RES_MEMORY)
rid	the resource identifier

Returns: Non-zero if the entry is reserved, zero otherwise.

Definition at line 3343 of file subr_bus.c.

References resource_list_find(), and type.

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◆ resource_list_unreserve()

int resource_list_unreserve	(	struct resource_list *	rl,
		device_t	bus,
		device_t	child,
		int	type,
		int	rid
	)

Fully release a reserved resource.

Fully releases a resource reserved via resource_list_reserve().

Parameters

rl	the resource list which was allocated from
bus	the parent device of `child`
child	the device whose reserved resource is being released
type	the type of resource to release
rid	the resource identifier
res	the resource to release

Return values

0	success
non-zero	a standard unix error code indicating what error condition prevented the operation

Definition at line 3661 of file subr_bus.c.

References bus, child, device_get_parent(), panic(), resource_list_find(), resource_list_release(), and type.

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◆ root_bus_configure()

void root_bus_configure ( void )

Automatically configure devices.

This function begins the autoconfiguration process by calling device_probe_and_attach() for each child of the root0 device.

Definition at line 5330 of file subr_bus.c.

References bus_set_pass(), and PDEBUG.

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◆ root_bus_module_handler()

static int root_bus_module_handler	(	module_t	mod,
		int	what,
		void *	arg
	)

static

Definition at line 5291 of file subr_bus.c.

References bus_data_devices, devclass_find_internal(), device_shutdown(), devinit(), kobj_class_compile(), kobj_init(), make_device(), root_bus, root_devclass, and root_driver.

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◆ root_child_present()

static int root_child_present	(	device_t	dev,
		device_t	child
	)

static

Definition at line 5243 of file subr_bus.c.

◆ root_get_cpus()

static int root_get_cpus	(	device_t	dev,
		device_t	child,
		enum cpu_sets	op,
		size_t	setsize,
		cpuset_t *	cpuset
	)

static

Definition at line 5249 of file subr_bus.c.

References all_cpus.

◆ root_print_child()

static int root_print_child	(	device_t	dev,
		device_t	child
	)

static

Definition at line 5215 of file subr_bus.c.

References bus_print_child_header(), child, and printf().

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◆ root_resume()

static int root_resume ( device_t dev )

static

Definition at line 5202 of file subr_bus.c.

References bus_generic_resume(), and devctl_notify().

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◆ root_setup_intr()

static int root_setup_intr	(	device_t	dev,
		device_t	child,
		struct resource *	irq,
		int	flags,
		driver_filter_t *	filter,
		driver_intr_t *	intr,
		void *	arg,
		void **	cookiep
	)

static

Definition at line 5226 of file subr_bus.c.

References panic().

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◆ STAILQ_HEAD()

STAILQ_HEAD	(	devq	,
		dev_event_info
	)

◆ sysctl_bus_info()

static int sysctl_bus_info ( SYSCTL_HANDLER_ARGS )

static

Definition at line 5602 of file subr_bus.c.

References bus_data_generation.

◆ sysctl_devctl_queue()

static int sysctl_devctl_queue ( SYSCTL_HANDLER_ARGS )

static

Definition at line 800 of file subr_bus.c.

References devctl_queue_length, devsoftc, dev_softc::mtx, sysctl_handle_int(), and dev_softc::zone.

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◆ sysctl_devices()

static int sysctl_devices ( SYSCTL_HANDLER_ARGS )

static

Definition at line 5616 of file subr_bus.c.

References bus_child_location(), bus_child_pnpinfo(), bus_data_devices, bus_data_generation_check(), free(), malloc(), name, sbuf_cat(), sbuf_delete(), sbuf_finish(), sbuf_new(), and sbuf_putc().

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◆ SYSCTL_INT()

SYSCTL_INT	(	_debug	,
		OID_AUTO	,
		obsolete_panic	,
		CTLFLAG_RWTUN	,
		&	obsolete_panic,
		0	,
		"Panic when obsolete features are used (0 = never, 1 = if obsolete, " "2 = if deprecated)"
	)

◆ SYSCTL_NODE() [1/2]

SYSCTL_NODE	(	_hw	,
		OID_AUTO	,
		bus	,
		CTLFLAG_RW\|	CTLFLAG_MPSAFE,
		NULL	,
		NULL
	)

◆ SYSCTL_NODE() [2/2]

SYSCTL_NODE	(	_hw_bus	,
		OID_AUTO	,
		devices	,
		CTLFLAG_RD\|	CTLFLAG_NEEDGIANT,
		sysctl_devices	,
		"system device tree"
	)

◆ SYSCTL_PROC() [1/2]

SYSCTL_PROC	(	_hw_bus	,
		OID_AUTO	,
		devctl_queue	,
		CTLTYPE_INT\|CTLFLAG_RWTUN\|	CTLFLAG_MPSAFE,
		NULL	,
		0	,
		sysctl_devctl_queue	,
		"I"	,
		"devctl queue length"
	)

◆ SYSCTL_PROC() [2/2]

SYSCTL_PROC	(	_hw_bus	,
		OID_AUTO	,
		info	,
		CTLTYPE_STRUCT\|CTLFLAG_RD\|	CTLFLAG_MPSAFE,
		NULL	,
		0	,
		sysctl_bus_info	,
		"	S,
		u_businfo"	,
		"bus-related data"
	)

◆ SYSCTL_ROOT_NODE()

SYSCTL_ROOT_NODE	(	OID_AUTO	,
		dev	,
		CTLFLAG_RW\|	CTLFLAG_MPSAFE,
		NULL	,
		NULL
	)

◆ TAILQ_HEAD() [1/2]

typedef TAILQ_HEAD	(	devclass_list	,
		devclass
	)

Definition at line 97 of file subr_bus.c.

References flags, name, and parent.

◆ TAILQ_HEAD() [2/2]

typedef TAILQ_HEAD	(	device_location_list	,
		device_location_node
	)

Definition at line 6142 of file subr_bus.c.

Variable Documentation

◆ bus_current_pass

int bus_current_pass = BUS_PASS_ROOT

Definition at line 903 of file subr_bus.c.

Referenced by bus_generic_new_pass(), bus_generic_probe(), bus_set_pass(), device_probe(), device_probe_child(), and driver_register_pass().

◆ bus_data_devices

struct device_list bus_data_devices

static

Definition at line 861 of file subr_bus.c.

Referenced by device_delete_child(), device_lookup_by_name(), make_device(), root_bus_module_handler(), and sysctl_devices().

◆ bus_data_generation

int bus_data_generation = 1

static

Definition at line 862 of file subr_bus.c.

Referenced by bus_data_generation_check(), bus_data_generation_update(), and sysctl_bus_info().

◆ dev_cdevsw

struct cdevsw dev_cdevsw

static

Initial value:

= {
        .d_version =    D_VERSION,
        .d_open =       devopen,
        .d_close =      devclose,
        .d_read =       devread,
        .d_ioctl =      devioctl,
        .d_poll =       devpoll,
        .d_kqfilter =   devkqfilter,
        .d_name =       "devctl",
}

Definition at line 388 of file subr_bus.c.

Referenced by devinit().

◆ devclasses

devclass_list_t devclasses = TAILQ_HEAD_INITIALIZER(devclasses)

static

Definition at line 989 of file subr_bus.c.

Referenced by devclass_driver_added(), devclass_driver_deleted(), devclass_find_internal(), and device_do_deferred_actions().

◆ devclose

d_close_t devclose

static

Definition at line 382 of file subr_bus.c.

◆ devctl2_cdevsw

struct cdevsw devctl2_cdevsw

static

Initial value:

= {
        .d_version =    D_VERSION,
        .d_ioctl =      devctl2_ioctl,
        .d_name =       "devctl2",
}

Definition at line 6121 of file subr_bus.c.

Referenced by devctl2_init().

◆ devctl_dev

struct cdev* devctl_dev

static

Definition at line 429 of file subr_bus.c.

Referenced by devinit().

◆ devctl_queue_length

int devctl_queue_length = DEVCTL_DEFAULT_QUEUE_LEN

static

Definition at line 377 of file subr_bus.c.

Referenced by devctl_alloc_dei(), devinit(), and sysctl_devctl_queue().

◆ devctl_rfiltops

struct filterops devctl_rfiltops

Initial value:

= {
        .f_isfd = 1,
        .f_detach = filt_devctl_detach,
        .f_event = filt_devctl_read,
}

Definition at line 423 of file subr_bus.c.

Referenced by devkqfilter().

◆ device_frozen

bool device_frozen

static

Definition at line 164 of file subr_bus.c.

Referenced by devclass_add_driver(), devclass_driver_deleted(), and devctl2_ioctl().

◆ devioctl

d_ioctl_t devioctl

static

Definition at line 384 of file subr_bus.c.

◆ devkqfilter

d_kqfilter_t devkqfilter

static

Definition at line 386 of file subr_bus.c.

◆ devopen

d_open_t devopen

static

Definition at line 381 of file subr_bus.c.

◆ devpoll

d_poll_t devpoll

static

Definition at line 385 of file subr_bus.c.

◆ devread

d_read_t devread

static

Definition at line 383 of file subr_bus.c.

◆ devsoftc

struct dev_softc devsoftc

static

Referenced by devclose(), devctl_alloc_dei(), devctl_free_dei(), devctl_process_running(), devctl_queue(), devinit(), devioctl(), devkqfilter(), devopen(), devpoll(), devread(), filt_devctl_detach(), filt_devctl_read(), and sysctl_devctl_queue().

◆ null_methods

kobj_method_t null_methods[]

static

Initial value:

= {
        KOBJMETHOD_END
}

Definition at line 864 of file subr_bus.c.

◆ obsolete_panic

int obsolete_panic = 0

static

Definition at line 6237 of file subr_bus.c.

Referenced by gone_panic().

◆ passes

driver_list_t passes = TAILQ_HEAD_INITIALIZER(passes)

static

Definition at line 902 of file subr_bus.c.

Referenced by bus_set_pass(), clockcalib(), and driver_register_pass().

◆ root_bus

device_t root_bus

Definition at line 5287 of file subr_bus.c.

Referenced by bus_set_pass(), device_do_deferred_actions(), and root_bus_module_handler().

◆ root_bus_mod

moduledata_t root_bus_mod

static

Initial value:

= {
        "rootbus",
        root_bus_module_handler,
        NULL
}

Definition at line 5316 of file subr_bus.c.

◆ root_devclass

devclass_t root_devclass

Definition at line 5288 of file subr_bus.c.

Referenced by root_bus_module_handler().

◆ root_driver

driver_t root_driver

static

Initial value:

= {
        "root",
        root_methods,
        1,                      
}

Definition at line 5281 of file subr_bus.c.

Referenced by root_bus_module_handler().

◆ root_methods

kobj_method_t root_methods[]

static

Initial value:

= {
        
        KOBJMETHOD(device_shutdown,     bus_generic_shutdown),
        KOBJMETHOD(device_suspend,      bus_generic_suspend),
        KOBJMETHOD(device_resume,       root_resume),
 
        
        KOBJMETHOD(bus_print_child,     root_print_child),
        KOBJMETHOD(bus_read_ivar,       bus_generic_read_ivar),
        KOBJMETHOD(bus_write_ivar,      bus_generic_write_ivar),
        KOBJMETHOD(bus_setup_intr,      root_setup_intr),
        KOBJMETHOD(bus_child_present,   root_child_present),
        KOBJMETHOD(bus_get_cpus,        root_get_cpus),
 
        KOBJMETHOD_END
}

Definition at line 5264 of file subr_bus.c.

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

◆ DC_HAS_CHILDREN

◆ DEVCLANAME

◆ DEVCTL_BUFFER

◆ DEVCTL_DEFAULT_QUEUE_LEN

◆ DEVICENAME

◆ DL_DEFERRED_PROBE

◆ DRIVERNAME

◆ PDEBUG

◆ print_devclass

◆ print_devclass_list

◆ print_devclass_list_short

◆ print_devclass_short

◆ print_device

◆ print_device_short

◆ print_device_tree

◆ print_device_tree_short

◆ print_driver

◆ print_driver_list

◆ print_driver_short

Typedef Documentation

◆ driverlink_t

Enumeration Type Documentation

◆ anonymous enum

◆ anonymous enum

Function Documentation

◆ __FBSDID()

◆ _gone_in()

◆ _gone_in_dev()

◆ bus_activate_resource()

◆ bus_adjust_resource()

◆ bus_alloc_resource()

◆ bus_alloc_resources()

◆ bus_bind_intr()

◆ bus_child_location()

◆ bus_child_pnpinfo()

◆ bus_child_present()

◆ bus_data_generation_check()

◆ bus_data_generation_update()

◆ bus_deactivate_resource()

◆ bus_delayed_attach_children()

◆ bus_delete_resource()

◆ bus_describe_intr()

◆ bus_enumerate_hinted_children()

◆ bus_free_resource()

◆ bus_generic_activate_resource()

◆ bus_generic_add_child()

◆ bus_generic_adjust_resource()

◆ bus_generic_alloc_resource()

◆ bus_generic_attach()

◆ bus_generic_bind_intr()

◆ bus_generic_child_location()

◆ bus_generic_child_pnpinfo()

◆ bus_generic_child_present()

◆ bus_generic_config_intr()

◆ bus_generic_deactivate_resource()

◆ bus_generic_describe_intr()

◆ bus_generic_detach()

◆ bus_generic_driver_added()

◆ bus_generic_get_bus_tag()

◆ bus_generic_get_cpus()

◆ bus_generic_get_device_path()

◆ bus_generic_get_dma_tag()

◆ bus_generic_get_domain()

◆ bus_generic_get_property()

◆ bus_generic_get_resource_list()

◆ bus_generic_map_resource()

◆ bus_generic_new_pass()

◆ bus_generic_print_child()

◆ bus_generic_probe()

◆ bus_generic_read_ivar()

◆ bus_generic_release_resource()

◆ bus_generic_resume()

◆ bus_generic_resume_child()