The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/sys/bus.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1997,1998,2003 Doug Rabson
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD: head/sys/sys/bus.h 345965 2019-04-05 19:31:26Z kib $
   29  */
   30 
   31 #ifndef _SYS_BUS_H_
   32 #define _SYS_BUS_H_
   33 
   34 #include <machine/_limits.h>
   35 #include <machine/_bus.h>
   36 #include <sys/_bus_dma.h>
   37 #include <sys/ioccom.h>
   38 
   39 /**
   40  * @defgroup NEWBUS newbus - a generic framework for managing devices
   41  * @{
   42  */
   43 
   44 /**
   45  * @brief Interface information structure.
   46  */
   47 struct u_businfo {
   48         int     ub_version;             /**< @brief interface version */
   49 #define BUS_USER_VERSION        2
   50         int     ub_generation;          /**< @brief generation count */
   51 };
   52 
   53 /**
   54  * @brief State of the device.
   55  */
   56 typedef enum device_state {
   57         DS_NOTPRESENT = 10,             /**< @brief not probed or probe failed */
   58         DS_ALIVE = 20,                  /**< @brief probe succeeded */
   59         DS_ATTACHING = 25,              /**< @brief currently attaching */
   60         DS_ATTACHED = 30,               /**< @brief attach method called */
   61         DS_BUSY = 40                    /**< @brief device is open */
   62 } device_state_t;
   63 
   64 /**
   65  * @brief Device information exported to userspace.
   66  * The strings are placed one after the other, separated by NUL characters.
   67  * Fields should be added after the last one and order maintained for compatibility
   68  */
   69 #define BUS_USER_BUFFER         (3*1024)
   70 struct u_device {
   71         uintptr_t       dv_handle;
   72         uintptr_t       dv_parent;
   73         uint32_t        dv_devflags;            /**< @brief API Flags for device */
   74         uint16_t        dv_flags;               /**< @brief flags for dev state */
   75         device_state_t  dv_state;               /**< @brief State of attachment */
   76         char            dv_fields[BUS_USER_BUFFER]; /**< @brief NUL terminated fields */
   77         /* name (name of the device in tree) */
   78         /* desc (driver description) */
   79         /* drivername (Name of driver without unit number) */
   80         /* pnpinfo (Plug and play information from bus) */
   81         /* location (Location of device on parent */
   82         /* NUL */
   83 };
   84 
   85 /* Flags exported via dv_flags. */
   86 #define DF_ENABLED      0x01            /* device should be probed/attached */
   87 #define DF_FIXEDCLASS   0x02            /* devclass specified at create time */
   88 #define DF_WILDCARD     0x04            /* unit was originally wildcard */
   89 #define DF_DESCMALLOCED 0x08            /* description was malloced */
   90 #define DF_QUIET        0x10            /* don't print verbose attach message */
   91 #define DF_DONENOMATCH  0x20            /* don't execute DEVICE_NOMATCH again */
   92 #define DF_EXTERNALSOFTC 0x40           /* softc not allocated by us */
   93 #define DF_REBID        0x80            /* Can rebid after attach */
   94 #define DF_SUSPENDED    0x100           /* Device is suspended. */
   95 #define DF_QUIET_CHILDREN 0x200         /* Default to quiet for all my children */
   96 #define DF_ATTACHED_ONCE 0x400          /* Has been attached at least once */
   97 #define DF_NEEDNOMATCH  0x800           /* Has a pending NOMATCH event */
   98 
   99 /**
  100  * @brief Device request structure used for ioctl's.
  101  *
  102  * Used for ioctl's on /dev/devctl2.  All device ioctl's
  103  * must have parameter definitions which begin with dr_name.
  104  */
  105 struct devreq_buffer {
  106         void    *buffer;
  107         size_t  length;
  108 };
  109 
  110 struct devreq {
  111         char            dr_name[128];
  112         int             dr_flags;               /* request-specific flags */
  113         union {
  114                 struct devreq_buffer dru_buffer;
  115                 void    *dru_data;
  116         } dr_dru;
  117 #define dr_buffer       dr_dru.dru_buffer       /* variable-sized buffer */
  118 #define dr_data         dr_dru.dru_data         /* fixed-size buffer */
  119 };
  120 
  121 #define DEV_ATTACH      _IOW('D', 1, struct devreq)
  122 #define DEV_DETACH      _IOW('D', 2, struct devreq)
  123 #define DEV_ENABLE      _IOW('D', 3, struct devreq)
  124 #define DEV_DISABLE     _IOW('D', 4, struct devreq)
  125 #define DEV_SUSPEND     _IOW('D', 5, struct devreq)
  126 #define DEV_RESUME      _IOW('D', 6, struct devreq)
  127 #define DEV_SET_DRIVER  _IOW('D', 7, struct devreq)
  128 #define DEV_CLEAR_DRIVER _IOW('D', 8, struct devreq)
  129 #define DEV_RESCAN      _IOW('D', 9, struct devreq)
  130 #define DEV_DELETE      _IOW('D', 10, struct devreq)
  131 #define DEV_FREEZE      _IOW('D', 11, struct devreq)
  132 #define DEV_THAW        _IOW('D', 12, struct devreq)
  133 #define DEV_RESET       _IOW('D', 13, struct devreq)
  134 
  135 /* Flags for DEV_DETACH and DEV_DISABLE. */
  136 #define DEVF_FORCE_DETACH       0x0000001
  137 
  138 /* Flags for DEV_SET_DRIVER. */
  139 #define DEVF_SET_DRIVER_DETACH  0x0000001       /* Detach existing driver. */
  140 
  141 /* Flags for DEV_CLEAR_DRIVER. */
  142 #define DEVF_CLEAR_DRIVER_DETACH 0x0000001      /* Detach existing driver. */
  143 
  144 /* Flags for DEV_DELETE. */
  145 #define DEVF_FORCE_DELETE       0x0000001
  146 
  147 /* Flags for DEV_RESET */
  148 #define DEVF_RESET_DETACH       0x0000001       /* Detach drivers vs suspend
  149                                                    device */
  150 
  151 #ifdef _KERNEL
  152 
  153 #include <sys/eventhandler.h>
  154 #include <sys/kobj.h>
  155 
  156 /**
  157  * devctl hooks.  Typically one should use the devctl_notify
  158  * hook to send the message.  However, devctl_queue_data is also
  159  * included in case devctl_notify isn't sufficiently general.
  160  */
  161 boolean_t devctl_process_running(void);
  162 void devctl_notify_f(const char *__system, const char *__subsystem,
  163     const char *__type, const char *__data, int __flags);
  164 void devctl_notify(const char *__system, const char *__subsystem,
  165     const char *__type, const char *__data);
  166 void devctl_queue_data_f(char *__data, int __flags);
  167 void devctl_queue_data(char *__data);
  168 struct sbuf;
  169 void devctl_safe_quote_sb(struct sbuf *__sb, const char *__src);
  170 
  171 /**
  172  * Device name parsers.  Hook to allow device enumerators to map
  173  * scheme-specific names to a device.
  174  */
  175 typedef void (*dev_lookup_fn)(void *arg, const char *name,
  176     device_t *result);
  177 EVENTHANDLER_DECLARE(dev_lookup, dev_lookup_fn);
  178 
  179 /**
  180  * @brief A device driver (included mainly for compatibility with
  181  * FreeBSD 4.x).
  182  */
  183 typedef struct kobj_class       driver_t;
  184 
  185 /**
  186  * @brief A device class
  187  *
  188  * The devclass object has two main functions in the system. The first
  189  * is to manage the allocation of unit numbers for device instances
  190  * and the second is to hold the list of device drivers for a
  191  * particular bus type. Each devclass has a name and there cannot be
  192  * two devclasses with the same name. This ensures that unique unit
  193  * numbers are allocated to device instances.
  194  *
  195  * Drivers that support several different bus attachments (e.g. isa,
  196  * pci, pccard) should all use the same devclass to ensure that unit
  197  * numbers do not conflict.
  198  *
  199  * Each devclass may also have a parent devclass. This is used when
  200  * searching for device drivers to allow a form of inheritance. When
  201  * matching drivers with devices, first the driver list of the parent
  202  * device's devclass is searched. If no driver is found in that list,
  203  * the search continues in the parent devclass (if any).
  204  */
  205 typedef struct devclass         *devclass_t;
  206 
  207 /**
  208  * @brief A device method
  209  */
  210 #define device_method_t         kobj_method_t
  211 
  212 /**
  213  * @brief Driver interrupt filter return values
  214  *
  215  * If a driver provides an interrupt filter routine it must return an
  216  * integer consisting of oring together zero or more of the following
  217  * flags:
  218  *
  219  *      FILTER_STRAY    - this device did not trigger the interrupt
  220  *      FILTER_HANDLED  - the interrupt has been fully handled and can be EOId
  221  *      FILTER_SCHEDULE_THREAD - the threaded interrupt handler should be
  222  *                        scheduled to execute
  223  *
  224  * If the driver does not provide a filter, then the interrupt code will
  225  * act is if the filter had returned FILTER_SCHEDULE_THREAD.  Note that it
  226  * is illegal to specify any other flag with FILTER_STRAY and that it is
  227  * illegal to not specify either of FILTER_HANDLED or FILTER_SCHEDULE_THREAD
  228  * if FILTER_STRAY is not specified.
  229  */
  230 #define FILTER_STRAY            0x01
  231 #define FILTER_HANDLED          0x02
  232 #define FILTER_SCHEDULE_THREAD  0x04
  233 
  234 /**
  235  * @brief Driver interrupt service routines
  236  *
  237  * The filter routine is run in primary interrupt context and may not
  238  * block or use regular mutexes.  It may only use spin mutexes for
  239  * synchronization.  The filter may either completely handle the
  240  * interrupt or it may perform some of the work and defer more
  241  * expensive work to the regular interrupt handler.  If a filter
  242  * routine is not registered by the driver, then the regular interrupt
  243  * handler is always used to handle interrupts from this device.
  244  *
  245  * The regular interrupt handler executes in its own thread context
  246  * and may use regular mutexes.  However, it is prohibited from
  247  * sleeping on a sleep queue.
  248  */
  249 typedef int driver_filter_t(void*);
  250 typedef void driver_intr_t(void*);
  251 
  252 /**
  253  * @brief Interrupt type bits.
  254  * 
  255  * These flags are used both by newbus interrupt
  256  * registration (nexus.c) and also in struct intrec, which defines
  257  * interrupt properties.
  258  *
  259  * XXX We should probably revisit this and remove the vestiges of the
  260  * spls implicit in names like INTR_TYPE_TTY. In the meantime, don't
  261  * confuse things by renaming them (Grog, 18 July 2000).
  262  *
  263  * Buses which do interrupt remapping will want to change their type
  264  * to reflect what sort of devices are underneath.
  265  */
  266 enum intr_type {
  267         INTR_TYPE_TTY = 1,
  268         INTR_TYPE_BIO = 2,
  269         INTR_TYPE_NET = 4,
  270         INTR_TYPE_CAM = 8,
  271         INTR_TYPE_MISC = 16,
  272         INTR_TYPE_CLK = 32,
  273         INTR_TYPE_AV = 64,
  274         INTR_EXCL = 256,                /* exclusive interrupt */
  275         INTR_MPSAFE = 512,              /* this interrupt is SMP safe */
  276         INTR_ENTROPY = 1024,            /* this interrupt provides entropy */
  277         INTR_MD1 = 4096,                /* flag reserved for MD use */
  278         INTR_MD2 = 8192,                /* flag reserved for MD use */
  279         INTR_MD3 = 16384,               /* flag reserved for MD use */
  280         INTR_MD4 = 32768                /* flag reserved for MD use */
  281 };
  282 
  283 enum intr_trigger {
  284         INTR_TRIGGER_INVALID = -1,
  285         INTR_TRIGGER_CONFORM = 0,
  286         INTR_TRIGGER_EDGE = 1,
  287         INTR_TRIGGER_LEVEL = 2
  288 };
  289 
  290 enum intr_polarity {
  291         INTR_POLARITY_CONFORM = 0,
  292         INTR_POLARITY_HIGH = 1,
  293         INTR_POLARITY_LOW = 2
  294 };
  295 
  296 /**
  297  * CPU sets supported by bus_get_cpus().  Note that not all sets may be
  298  * supported for a given device.  If a request is not supported by a
  299  * device (or its parents), then bus_get_cpus() will fail with EINVAL.
  300  */
  301 enum cpu_sets {
  302         LOCAL_CPUS = 0,
  303         INTR_CPUS
  304 };
  305 
  306 typedef int (*devop_t)(void);
  307 
  308 /**
  309  * @brief This structure is deprecated.
  310  *
  311  * Use the kobj(9) macro DEFINE_CLASS to
  312  * declare classes which implement device drivers.
  313  */
  314 struct driver {
  315         KOBJ_CLASS_FIELDS;
  316 };
  317 
  318 /**
  319  * @brief A resource mapping.
  320  */
  321 struct resource_map {
  322         bus_space_tag_t r_bustag;
  323         bus_space_handle_t r_bushandle;
  324         bus_size_t r_size;
  325         void    *r_vaddr;
  326 };
  327         
  328 /**
  329  * @brief Optional properties of a resource mapping request.
  330  */
  331 struct resource_map_request {
  332         size_t  size;
  333         rman_res_t offset;
  334         rman_res_t length;
  335         vm_memattr_t memattr;
  336 };
  337 
  338 void    resource_init_map_request_impl(struct resource_map_request *_args,
  339             size_t _sz);
  340 #define resource_init_map_request(rmr)                                  \
  341         resource_init_map_request_impl((rmr), sizeof(*(rmr)))
  342 
  343 /*
  344  * Definitions for drivers which need to keep simple lists of resources
  345  * for their child devices.
  346  */
  347 struct  resource;
  348 
  349 /**
  350  * @brief An entry for a single resource in a resource list.
  351  */
  352 struct resource_list_entry {
  353         STAILQ_ENTRY(resource_list_entry) link;
  354         int     type;                   /**< @brief type argument to alloc_resource */
  355         int     rid;                    /**< @brief resource identifier */
  356         int     flags;                  /**< @brief resource flags */
  357         struct  resource *res;          /**< @brief the real resource when allocated */
  358         rman_res_t      start;          /**< @brief start of resource range */
  359         rman_res_t      end;            /**< @brief end of resource range */
  360         rman_res_t      count;                  /**< @brief count within range */
  361 };
  362 STAILQ_HEAD(resource_list, resource_list_entry);
  363 
  364 #define RLE_RESERVED            0x0001  /* Reserved by the parent bus. */
  365 #define RLE_ALLOCATED           0x0002  /* Reserved resource is allocated. */
  366 #define RLE_PREFETCH            0x0004  /* Resource is a prefetch range. */
  367 
  368 void    resource_list_init(struct resource_list *rl);
  369 void    resource_list_free(struct resource_list *rl);
  370 struct resource_list_entry *
  371         resource_list_add(struct resource_list *rl,
  372                           int type, int rid,
  373                           rman_res_t start, rman_res_t end, rman_res_t count);
  374 int     resource_list_add_next(struct resource_list *rl,
  375                           int type,
  376                           rman_res_t start, rman_res_t end, rman_res_t count);
  377 int     resource_list_busy(struct resource_list *rl,
  378                            int type, int rid);
  379 int     resource_list_reserved(struct resource_list *rl, int type, int rid);
  380 struct resource_list_entry*
  381         resource_list_find(struct resource_list *rl,
  382                            int type, int rid);
  383 void    resource_list_delete(struct resource_list *rl,
  384                              int type, int rid);
  385 struct resource *
  386         resource_list_alloc(struct resource_list *rl,
  387                             device_t bus, device_t child,
  388                             int type, int *rid,
  389                             rman_res_t start, rman_res_t end,
  390                             rman_res_t count, u_int flags);
  391 int     resource_list_release(struct resource_list *rl,
  392                               device_t bus, device_t child,
  393                               int type, int rid, struct resource *res);
  394 int     resource_list_release_active(struct resource_list *rl,
  395                                      device_t bus, device_t child,
  396                                      int type);
  397 struct resource *
  398         resource_list_reserve(struct resource_list *rl,
  399                               device_t bus, device_t child,
  400                               int type, int *rid,
  401                               rman_res_t start, rman_res_t end,
  402                               rman_res_t count, u_int flags);
  403 int     resource_list_unreserve(struct resource_list *rl,
  404                                 device_t bus, device_t child,
  405                                 int type, int rid);
  406 void    resource_list_purge(struct resource_list *rl);
  407 int     resource_list_print_type(struct resource_list *rl,
  408                                  const char *name, int type,
  409                                  const char *format);
  410 
  411 /*
  412  * The root bus, to which all top-level buses are attached.
  413  */
  414 extern device_t root_bus;
  415 extern devclass_t root_devclass;
  416 void    root_bus_configure(void);
  417 
  418 /*
  419  * Useful functions for implementing buses.
  420  */
  421 
  422 int     bus_generic_activate_resource(device_t dev, device_t child, int type,
  423                                       int rid, struct resource *r);
  424 device_t
  425         bus_generic_add_child(device_t dev, u_int order, const char *name,
  426                               int unit);
  427 int     bus_generic_adjust_resource(device_t bus, device_t child, int type,
  428                                     struct resource *r, rman_res_t start,
  429                                     rman_res_t end);
  430 struct resource *
  431         bus_generic_alloc_resource(device_t bus, device_t child, int type,
  432                                    int *rid, rman_res_t start, rman_res_t end,
  433                                    rman_res_t count, u_int flags);
  434 int     bus_generic_attach(device_t dev);
  435 int     bus_generic_bind_intr(device_t dev, device_t child,
  436                               struct resource *irq, int cpu);
  437 int     bus_generic_child_present(device_t dev, device_t child);
  438 int     bus_generic_config_intr(device_t, int, enum intr_trigger,
  439                                 enum intr_polarity);
  440 int     bus_generic_describe_intr(device_t dev, device_t child,
  441                                   struct resource *irq, void *cookie,
  442                                   const char *descr);
  443 int     bus_generic_deactivate_resource(device_t dev, device_t child, int type,
  444                                         int rid, struct resource *r);
  445 int     bus_generic_detach(device_t dev);
  446 void    bus_generic_driver_added(device_t dev, driver_t *driver);
  447 int     bus_generic_get_cpus(device_t dev, device_t child, enum cpu_sets op,
  448                              size_t setsize, struct _cpuset *cpuset);
  449 bus_dma_tag_t
  450         bus_generic_get_dma_tag(device_t dev, device_t child);
  451 bus_space_tag_t
  452         bus_generic_get_bus_tag(device_t dev, device_t child);
  453 int     bus_generic_get_domain(device_t dev, device_t child, int *domain);
  454 struct resource_list *
  455         bus_generic_get_resource_list (device_t, device_t);
  456 int     bus_generic_map_resource(device_t dev, device_t child, int type,
  457                                  struct resource *r,
  458                                  struct resource_map_request *args,
  459                                  struct resource_map *map);
  460 void    bus_generic_new_pass(device_t dev);
  461 int     bus_print_child_header(device_t dev, device_t child);
  462 int     bus_print_child_domain(device_t dev, device_t child);
  463 int     bus_print_child_footer(device_t dev, device_t child);
  464 int     bus_generic_print_child(device_t dev, device_t child);
  465 int     bus_generic_probe(device_t dev);
  466 int     bus_generic_read_ivar(device_t dev, device_t child, int which,
  467                               uintptr_t *result);
  468 int     bus_generic_release_resource(device_t bus, device_t child,
  469                                      int type, int rid, struct resource *r);
  470 int     bus_generic_resume(device_t dev);
  471 int     bus_generic_resume_child(device_t dev, device_t child);
  472 int     bus_generic_setup_intr(device_t dev, device_t child,
  473                                struct resource *irq, int flags,
  474                                driver_filter_t *filter, driver_intr_t *intr, 
  475                                void *arg, void **cookiep);
  476 
  477 struct resource *
  478         bus_generic_rl_alloc_resource (device_t, device_t, int, int *,
  479                                        rman_res_t, rman_res_t, rman_res_t, u_int);
  480 void    bus_generic_rl_delete_resource (device_t, device_t, int, int);
  481 int     bus_generic_rl_get_resource (device_t, device_t, int, int, rman_res_t *,
  482                                      rman_res_t *);
  483 int     bus_generic_rl_set_resource (device_t, device_t, int, int, rman_res_t,
  484                                      rman_res_t);
  485 int     bus_generic_rl_release_resource (device_t, device_t, int, int,
  486                                          struct resource *);
  487 
  488 int     bus_generic_shutdown(device_t dev);
  489 int     bus_generic_suspend(device_t dev);
  490 int     bus_generic_suspend_child(device_t dev, device_t child);
  491 int     bus_generic_teardown_intr(device_t dev, device_t child,
  492                                   struct resource *irq, void *cookie);
  493 int     bus_generic_suspend_intr(device_t dev, device_t child,
  494                                   struct resource *irq);
  495 int     bus_generic_resume_intr(device_t dev, device_t child,
  496                                   struct resource *irq);
  497 int     bus_generic_unmap_resource(device_t dev, device_t child, int type,
  498                                    struct resource *r,
  499                                    struct resource_map *map);
  500 int     bus_generic_write_ivar(device_t dev, device_t child, int which,
  501                                uintptr_t value);
  502 int     bus_helper_reset_post(device_t dev, int flags);
  503 int     bus_helper_reset_prepare(device_t dev, int flags);
  504 int     bus_null_rescan(device_t dev);
  505 
  506 /*
  507  * Wrapper functions for the BUS_*_RESOURCE methods to make client code
  508  * a little simpler.
  509  */
  510 
  511 struct resource_spec {
  512         int     type;
  513         int     rid;
  514         int     flags;
  515 };
  516 #define RESOURCE_SPEC_END       {-1, 0, 0}
  517 
  518 int     bus_alloc_resources(device_t dev, struct resource_spec *rs,
  519                             struct resource **res);
  520 void    bus_release_resources(device_t dev, const struct resource_spec *rs,
  521                               struct resource **res);
  522 
  523 int     bus_adjust_resource(device_t child, int type, struct resource *r,
  524                             rman_res_t start, rman_res_t end);
  525 struct  resource *bus_alloc_resource(device_t dev, int type, int *rid,
  526                                      rman_res_t start, rman_res_t end,
  527                                      rman_res_t count, u_int flags);
  528 int     bus_activate_resource(device_t dev, int type, int rid,
  529                               struct resource *r);
  530 int     bus_deactivate_resource(device_t dev, int type, int rid,
  531                                 struct resource *r);
  532 int     bus_map_resource(device_t dev, int type, struct resource *r,
  533                          struct resource_map_request *args,
  534                          struct resource_map *map);
  535 int     bus_unmap_resource(device_t dev, int type, struct resource *r,
  536                            struct resource_map *map);
  537 int     bus_get_cpus(device_t dev, enum cpu_sets op, size_t setsize,
  538                      struct _cpuset *cpuset);
  539 bus_dma_tag_t bus_get_dma_tag(device_t dev);
  540 bus_space_tag_t bus_get_bus_tag(device_t dev);
  541 int     bus_get_domain(device_t dev, int *domain);
  542 int     bus_release_resource(device_t dev, int type, int rid,
  543                              struct resource *r);
  544 int     bus_free_resource(device_t dev, int type, struct resource *r);
  545 int     bus_setup_intr(device_t dev, struct resource *r, int flags,
  546                        driver_filter_t filter, driver_intr_t handler, 
  547                        void *arg, void **cookiep);
  548 int     bus_teardown_intr(device_t dev, struct resource *r, void *cookie);
  549 int     bus_suspend_intr(device_t dev, struct resource *r);
  550 int     bus_resume_intr(device_t dev, struct resource *r);
  551 int     bus_bind_intr(device_t dev, struct resource *r, int cpu);
  552 int     bus_describe_intr(device_t dev, struct resource *irq, void *cookie,
  553                           const char *fmt, ...) __printflike(4, 5);
  554 int     bus_set_resource(device_t dev, int type, int rid,
  555                          rman_res_t start, rman_res_t count);
  556 int     bus_get_resource(device_t dev, int type, int rid,
  557                          rman_res_t *startp, rman_res_t *countp);
  558 rman_res_t      bus_get_resource_start(device_t dev, int type, int rid);
  559 rman_res_t      bus_get_resource_count(device_t dev, int type, int rid);
  560 void    bus_delete_resource(device_t dev, int type, int rid);
  561 int     bus_child_present(device_t child);
  562 int     bus_child_pnpinfo_str(device_t child, char *buf, size_t buflen);
  563 int     bus_child_location_str(device_t child, char *buf, size_t buflen);
  564 void    bus_enumerate_hinted_children(device_t bus);
  565 
  566 static __inline struct resource *
  567 bus_alloc_resource_any(device_t dev, int type, int *rid, u_int flags)
  568 {
  569         return (bus_alloc_resource(dev, type, rid, 0, ~0, 1, flags));
  570 }
  571 
  572 static __inline struct resource *
  573 bus_alloc_resource_anywhere(device_t dev, int type, int *rid,
  574     rman_res_t count, u_int flags)
  575 {
  576         return (bus_alloc_resource(dev, type, rid, 0, ~0, count, flags));
  577 }
  578 
  579 /*
  580  * Access functions for device.
  581  */
  582 device_t        device_add_child(device_t dev, const char *name, int unit);
  583 device_t        device_add_child_ordered(device_t dev, u_int order,
  584                                          const char *name, int unit);
  585 void    device_busy(device_t dev);
  586 int     device_delete_child(device_t dev, device_t child);
  587 int     device_delete_children(device_t dev);
  588 int     device_attach(device_t dev);
  589 int     device_detach(device_t dev);
  590 void    device_disable(device_t dev);
  591 void    device_enable(device_t dev);
  592 device_t        device_find_child(device_t dev, const char *classname,
  593                                   int unit);
  594 const char      *device_get_desc(device_t dev);
  595 devclass_t      device_get_devclass(device_t dev);
  596 driver_t        *device_get_driver(device_t dev);
  597 u_int32_t       device_get_flags(device_t dev);
  598 device_t        device_get_parent(device_t dev);
  599 int     device_get_children(device_t dev, device_t **listp, int *countp);
  600 void    *device_get_ivars(device_t dev);
  601 void    device_set_ivars(device_t dev, void *ivars);
  602 const   char *device_get_name(device_t dev);
  603 const   char *device_get_nameunit(device_t dev);
  604 void    *device_get_softc(device_t dev);
  605 device_state_t  device_get_state(device_t dev);
  606 int     device_get_unit(device_t dev);
  607 struct sysctl_ctx_list *device_get_sysctl_ctx(device_t dev);
  608 struct sysctl_oid *device_get_sysctl_tree(device_t dev);
  609 int     device_has_quiet_children(device_t dev);
  610 int     device_is_alive(device_t dev);  /* did probe succeed? */
  611 int     device_is_attached(device_t dev);       /* did attach succeed? */
  612 int     device_is_enabled(device_t dev);
  613 int     device_is_suspended(device_t dev);
  614 int     device_is_quiet(device_t dev);
  615 device_t device_lookup_by_name(const char *name);
  616 int     device_print_prettyname(device_t dev);
  617 int     device_printf(device_t dev, const char *, ...) __printflike(2, 3);
  618 int     device_probe(device_t dev);
  619 int     device_probe_and_attach(device_t dev);
  620 int     device_probe_child(device_t bus, device_t dev);
  621 int     device_quiesce(device_t dev);
  622 void    device_quiet(device_t dev);
  623 void    device_quiet_children(device_t dev);
  624 void    device_set_desc(device_t dev, const char* desc);
  625 void    device_set_desc_copy(device_t dev, const char* desc);
  626 int     device_set_devclass(device_t dev, const char *classname);
  627 int     device_set_devclass_fixed(device_t dev, const char *classname);
  628 bool    device_is_devclass_fixed(device_t dev);
  629 int     device_set_driver(device_t dev, driver_t *driver);
  630 void    device_set_flags(device_t dev, u_int32_t flags);
  631 void    device_set_softc(device_t dev, void *softc);
  632 void    device_free_softc(void *softc);
  633 void    device_claim_softc(device_t dev);
  634 int     device_set_unit(device_t dev, int unit);        /* XXX DONT USE XXX */
  635 int     device_shutdown(device_t dev);
  636 void    device_unbusy(device_t dev);
  637 void    device_verbose(device_t dev);
  638 
  639 /*
  640  * Access functions for devclass.
  641  */
  642 int             devclass_add_driver(devclass_t dc, driver_t *driver,
  643                                     int pass, devclass_t *dcp);
  644 devclass_t      devclass_create(const char *classname);
  645 int             devclass_delete_driver(devclass_t busclass, driver_t *driver);
  646 devclass_t      devclass_find(const char *classname);
  647 const char      *devclass_get_name(devclass_t dc);
  648 device_t        devclass_get_device(devclass_t dc, int unit);
  649 void    *devclass_get_softc(devclass_t dc, int unit);
  650 int     devclass_get_devices(devclass_t dc, device_t **listp, int *countp);
  651 int     devclass_get_drivers(devclass_t dc, driver_t ***listp, int *countp);
  652 int     devclass_get_count(devclass_t dc);
  653 int     devclass_get_maxunit(devclass_t dc);
  654 int     devclass_find_free_unit(devclass_t dc, int unit);
  655 void    devclass_set_parent(devclass_t dc, devclass_t pdc);
  656 devclass_t      devclass_get_parent(devclass_t dc);
  657 struct sysctl_ctx_list *devclass_get_sysctl_ctx(devclass_t dc);
  658 struct sysctl_oid *devclass_get_sysctl_tree(devclass_t dc);
  659 
  660 /*
  661  * Access functions for device resources.
  662  */
  663 int     resource_int_value(const char *name, int unit, const char *resname,
  664                            int *result);
  665 int     resource_long_value(const char *name, int unit, const char *resname,
  666                             long *result);
  667 int     resource_string_value(const char *name, int unit, const char *resname,
  668                               const char **result);
  669 int     resource_disabled(const char *name, int unit);
  670 int     resource_find_match(int *anchor, const char **name, int *unit,
  671                             const char *resname, const char *value);
  672 int     resource_find_dev(int *anchor, const char *name, int *unit,
  673                           const char *resname, const char *value);
  674 int     resource_unset_value(const char *name, int unit, const char *resname);
  675 
  676 /*
  677  * Functions for maintaining and checking consistency of
  678  * bus information exported to userspace.
  679  */
  680 int     bus_data_generation_check(int generation);
  681 void    bus_data_generation_update(void);
  682 
  683 /**
  684  * Some convenience defines for probe routines to return.  These are just
  685  * suggested values, and there's nothing magical about them.
  686  * BUS_PROBE_SPECIFIC is for devices that cannot be reprobed, and that no
  687  * possible other driver may exist (typically legacy drivers who don't follow
  688  * all the rules, or special needs drivers).  BUS_PROBE_VENDOR is the
  689  * suggested value that vendor supplied drivers use.  This is for source or
  690  * binary drivers that are not yet integrated into the FreeBSD tree.  Its use
  691  * in the base OS is prohibited.  BUS_PROBE_DEFAULT is the normal return value
  692  * for drivers to use.  It is intended that nearly all of the drivers in the
  693  * tree should return this value.  BUS_PROBE_LOW_PRIORITY are for drivers that
  694  * have special requirements like when there are two drivers that support
  695  * overlapping series of hardware devices.  In this case the one that supports
  696  * the older part of the line would return this value, while the one that
  697  * supports the newer ones would return BUS_PROBE_DEFAULT.  BUS_PROBE_GENERIC
  698  * is for drivers that wish to have a generic form and a specialized form,
  699  * like is done with the pci bus and the acpi pci bus.  BUS_PROBE_HOOVER is
  700  * for those buses that implement a generic device placeholder for devices on
  701  * the bus that have no more specific driver for them (aka ugen).
  702  * BUS_PROBE_NOWILDCARD or lower means that the device isn't really bidding
  703  * for a device node, but accepts only devices that its parent has told it
  704  * use this driver.
  705  */
  706 #define BUS_PROBE_SPECIFIC      0       /* Only I can use this device */
  707 #define BUS_PROBE_VENDOR        (-10)   /* Vendor supplied driver */
  708 #define BUS_PROBE_DEFAULT       (-20)   /* Base OS default driver */
  709 #define BUS_PROBE_LOW_PRIORITY  (-40)   /* Older, less desirable drivers */
  710 #define BUS_PROBE_GENERIC       (-100)  /* generic driver for dev */
  711 #define BUS_PROBE_HOOVER        (-1000000) /* Driver for any dev on bus */
  712 #define BUS_PROBE_NOWILDCARD    (-2000000000) /* No wildcard device matches */
  713 
  714 /**
  715  * During boot, the device tree is scanned multiple times.  Each scan,
  716  * or pass, drivers may be attached to devices.  Each driver
  717  * attachment is assigned a pass number.  Drivers may only probe and
  718  * attach to devices if their pass number is less than or equal to the
  719  * current system-wide pass number.  The default pass is the last pass
  720  * and is used by most drivers.  Drivers needed by the scheduler are
  721  * probed in earlier passes.
  722  */
  723 #define BUS_PASS_ROOT           0       /* Used to attach root0. */
  724 #define BUS_PASS_BUS            10      /* Buses and bridges. */
  725 #define BUS_PASS_CPU            20      /* CPU devices. */
  726 #define BUS_PASS_RESOURCE       30      /* Resource discovery. */
  727 #define BUS_PASS_INTERRUPT      40      /* Interrupt controllers. */
  728 #define BUS_PASS_TIMER          50      /* Timers and clocks. */
  729 #define BUS_PASS_SCHEDULER      60      /* Start scheduler. */
  730 #define BUS_PASS_SUPPORTDEV     100000  /* Drivers which support DEFAULT drivers. */
  731 #define BUS_PASS_DEFAULT        __INT_MAX /* Everything else. */
  732 
  733 #define BUS_PASS_ORDER_FIRST    0
  734 #define BUS_PASS_ORDER_EARLY    2
  735 #define BUS_PASS_ORDER_MIDDLE   5
  736 #define BUS_PASS_ORDER_LATE     7
  737 #define BUS_PASS_ORDER_LAST     9
  738 
  739 extern int bus_current_pass;
  740 
  741 void    bus_set_pass(int pass);
  742 
  743 /**
  744  * Shorthands for constructing method tables.
  745  */
  746 #define DEVMETHOD       KOBJMETHOD
  747 #define DEVMETHOD_END   KOBJMETHOD_END
  748 
  749 /*
  750  * Some common device interfaces.
  751  */
  752 #include "device_if.h"
  753 #include "bus_if.h"
  754 
  755 struct  module;
  756 
  757 int     driver_module_handler(struct module *, int, void *);
  758 
  759 /**
  760  * Module support for automatically adding drivers to buses.
  761  */
  762 struct driver_module_data {
  763         int             (*dmd_chainevh)(struct module *, int, void *);
  764         void            *dmd_chainarg;
  765         const char      *dmd_busname;
  766         kobj_class_t    dmd_driver;
  767         devclass_t      *dmd_devclass;
  768         int             dmd_pass;
  769 };
  770 
  771 #define EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass,    \
  772     evh, arg, order, pass)                                              \
  773                                                                         \
  774 static struct driver_module_data name##_##busname##_driver_mod = {      \
  775         evh, arg,                                                       \
  776         #busname,                                                       \
  777         (kobj_class_t) &driver,                                         \
  778         &devclass,                                                      \
  779         pass                                                            \
  780 };                                                                      \
  781                                                                         \
  782 static moduledata_t name##_##busname##_mod = {                          \
  783         #busname "/" #name,                                             \
  784         driver_module_handler,                                          \
  785         &name##_##busname##_driver_mod                                  \
  786 };                                                                      \
  787 DECLARE_MODULE(name##_##busname, name##_##busname##_mod,                \
  788                SI_SUB_DRIVERS, order)
  789 
  790 #define EARLY_DRIVER_MODULE(name, busname, driver, devclass, evh, arg, pass) \
  791         EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass,    \
  792             evh, arg, SI_ORDER_MIDDLE, pass)
  793 
  794 #define DRIVER_MODULE_ORDERED(name, busname, driver, devclass, evh, arg,\
  795     order)                                                              \
  796         EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass,    \
  797             evh, arg, order, BUS_PASS_DEFAULT)
  798 
  799 #define DRIVER_MODULE(name, busname, driver, devclass, evh, arg)        \
  800         EARLY_DRIVER_MODULE(name, busname, driver, devclass, evh, arg,  \
  801             BUS_PASS_DEFAULT)
  802 
  803 /**
  804  * Generic ivar accessor generation macros for bus drivers
  805  */
  806 #define __BUS_ACCESSOR(varp, var, ivarp, ivar, type)                    \
  807                                                                         \
  808 static __inline type varp ## _get_ ## var(device_t dev)                 \
  809 {                                                                       \
  810         uintptr_t v;                                                    \
  811         BUS_READ_IVAR(device_get_parent(dev), dev,                      \
  812             ivarp ## _IVAR_ ## ivar, &v);                               \
  813         return ((type) v);                                              \
  814 }                                                                       \
  815                                                                         \
  816 static __inline void varp ## _set_ ## var(device_t dev, type t)         \
  817 {                                                                       \
  818         uintptr_t v = (uintptr_t) t;                                    \
  819         BUS_WRITE_IVAR(device_get_parent(dev), dev,                     \
  820             ivarp ## _IVAR_ ## ivar, v);                                \
  821 }
  822 
  823 /**
  824  * Shorthand macros, taking resource argument
  825  * Generated with sys/tools/bus_macro.sh
  826  */
  827 
  828 #define bus_barrier(r, o, l, f) \
  829         bus_space_barrier((r)->r_bustag, (r)->r_bushandle, (o), (l), (f))
  830 #define bus_read_1(r, o) \
  831         bus_space_read_1((r)->r_bustag, (r)->r_bushandle, (o))
  832 #define bus_read_multi_1(r, o, d, c) \
  833         bus_space_read_multi_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  834 #define bus_read_region_1(r, o, d, c) \
  835         bus_space_read_region_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  836 #define bus_set_multi_1(r, o, v, c) \
  837         bus_space_set_multi_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  838 #define bus_set_region_1(r, o, v, c) \
  839         bus_space_set_region_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  840 #define bus_write_1(r, o, v) \
  841         bus_space_write_1((r)->r_bustag, (r)->r_bushandle, (o), (v))
  842 #define bus_write_multi_1(r, o, d, c) \
  843         bus_space_write_multi_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  844 #define bus_write_region_1(r, o, d, c) \
  845         bus_space_write_region_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  846 #define bus_read_stream_1(r, o) \
  847         bus_space_read_stream_1((r)->r_bustag, (r)->r_bushandle, (o))
  848 #define bus_read_multi_stream_1(r, o, d, c) \
  849         bus_space_read_multi_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  850 #define bus_read_region_stream_1(r, o, d, c) \
  851         bus_space_read_region_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  852 #define bus_set_multi_stream_1(r, o, v, c) \
  853         bus_space_set_multi_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  854 #define bus_set_region_stream_1(r, o, v, c) \
  855         bus_space_set_region_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  856 #define bus_write_stream_1(r, o, v) \
  857         bus_space_write_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (v))
  858 #define bus_write_multi_stream_1(r, o, d, c) \
  859         bus_space_write_multi_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  860 #define bus_write_region_stream_1(r, o, d, c) \
  861         bus_space_write_region_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  862 #define bus_read_2(r, o) \
  863         bus_space_read_2((r)->r_bustag, (r)->r_bushandle, (o))
  864 #define bus_read_multi_2(r, o, d, c) \
  865         bus_space_read_multi_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  866 #define bus_read_region_2(r, o, d, c) \
  867         bus_space_read_region_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  868 #define bus_set_multi_2(r, o, v, c) \
  869         bus_space_set_multi_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  870 #define bus_set_region_2(r, o, v, c) \
  871         bus_space_set_region_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  872 #define bus_write_2(r, o, v) \
  873         bus_space_write_2((r)->r_bustag, (r)->r_bushandle, (o), (v))
  874 #define bus_write_multi_2(r, o, d, c) \
  875         bus_space_write_multi_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  876 #define bus_write_region_2(r, o, d, c) \
  877         bus_space_write_region_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  878 #define bus_read_stream_2(r, o) \
  879         bus_space_read_stream_2((r)->r_bustag, (r)->r_bushandle, (o))
  880 #define bus_read_multi_stream_2(r, o, d, c) \
  881         bus_space_read_multi_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  882 #define bus_read_region_stream_2(r, o, d, c) \
  883         bus_space_read_region_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  884 #define bus_set_multi_stream_2(r, o, v, c) \
  885         bus_space_set_multi_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  886 #define bus_set_region_stream_2(r, o, v, c) \
  887         bus_space_set_region_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  888 #define bus_write_stream_2(r, o, v) \
  889         bus_space_write_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (v))
  890 #define bus_write_multi_stream_2(r, o, d, c) \
  891         bus_space_write_multi_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  892 #define bus_write_region_stream_2(r, o, d, c) \
  893         bus_space_write_region_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  894 #define bus_read_4(r, o) \
  895         bus_space_read_4((r)->r_bustag, (r)->r_bushandle, (o))
  896 #define bus_read_multi_4(r, o, d, c) \
  897         bus_space_read_multi_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  898 #define bus_read_region_4(r, o, d, c) \
  899         bus_space_read_region_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  900 #define bus_set_multi_4(r, o, v, c) \
  901         bus_space_set_multi_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  902 #define bus_set_region_4(r, o, v, c) \
  903         bus_space_set_region_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  904 #define bus_write_4(r, o, v) \
  905         bus_space_write_4((r)->r_bustag, (r)->r_bushandle, (o), (v))
  906 #define bus_write_multi_4(r, o, d, c) \
  907         bus_space_write_multi_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  908 #define bus_write_region_4(r, o, d, c) \
  909         bus_space_write_region_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  910 #define bus_read_stream_4(r, o) \
  911         bus_space_read_stream_4((r)->r_bustag, (r)->r_bushandle, (o))
  912 #define bus_read_multi_stream_4(r, o, d, c) \
  913         bus_space_read_multi_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  914 #define bus_read_region_stream_4(r, o, d, c) \
  915         bus_space_read_region_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  916 #define bus_set_multi_stream_4(r, o, v, c) \
  917         bus_space_set_multi_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  918 #define bus_set_region_stream_4(r, o, v, c) \
  919         bus_space_set_region_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  920 #define bus_write_stream_4(r, o, v) \
  921         bus_space_write_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (v))
  922 #define bus_write_multi_stream_4(r, o, d, c) \
  923         bus_space_write_multi_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  924 #define bus_write_region_stream_4(r, o, d, c) \
  925         bus_space_write_region_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  926 #define bus_read_8(r, o) \
  927         bus_space_read_8((r)->r_bustag, (r)->r_bushandle, (o))
  928 #define bus_read_multi_8(r, o, d, c) \
  929         bus_space_read_multi_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  930 #define bus_read_region_8(r, o, d, c) \
  931         bus_space_read_region_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  932 #define bus_set_multi_8(r, o, v, c) \
  933         bus_space_set_multi_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  934 #define bus_set_region_8(r, o, v, c) \
  935         bus_space_set_region_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  936 #define bus_write_8(r, o, v) \
  937         bus_space_write_8((r)->r_bustag, (r)->r_bushandle, (o), (v))
  938 #define bus_write_multi_8(r, o, d, c) \
  939         bus_space_write_multi_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  940 #define bus_write_region_8(r, o, d, c) \
  941         bus_space_write_region_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  942 #define bus_read_stream_8(r, o) \
  943         bus_space_read_stream_8((r)->r_bustag, (r)->r_bushandle, (o))
  944 #define bus_read_multi_stream_8(r, o, d, c) \
  945         bus_space_read_multi_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  946 #define bus_read_region_stream_8(r, o, d, c) \
  947         bus_space_read_region_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  948 #define bus_set_multi_stream_8(r, o, v, c) \
  949         bus_space_set_multi_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  950 #define bus_set_region_stream_8(r, o, v, c) \
  951         bus_space_set_region_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  952 #define bus_write_stream_8(r, o, v) \
  953         bus_space_write_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (v))
  954 #define bus_write_multi_stream_8(r, o, d, c) \
  955         bus_space_write_multi_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  956 #define bus_write_region_stream_8(r, o, d, c) \
  957         bus_space_write_region_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  958 #endif /* _KERNEL */
  959 
  960 #endif /* !_SYS_BUS_H_ */

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