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  * $FreeBSD$
   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 #include <sys/systm.h>
  156 
  157 /**
  158  * devctl hooks.  Typically one should use the devctl_notify
  159  * hook to send the message.  However, devctl_queue_data is also
  160  * included in case devctl_notify isn't sufficiently general.
  161  */
  162 boolean_t devctl_process_running(void);
  163 void devctl_notify_f(const char *__system, const char *__subsystem,
  164     const char *__type, const char *__data, int __flags);
  165 void devctl_notify(const char *__system, const char *__subsystem,
  166     const char *__type, const char *__data);
  167 void devctl_queue_data_f(char *__data, int __flags);
  168 void devctl_queue_data(char *__data);
  169 struct sbuf;
  170 void devctl_safe_quote_sb(struct sbuf *__sb, const char *__src);
  171 
  172 /**
  173  * Device name parsers.  Hook to allow device enumerators to map
  174  * scheme-specific names to a device.
  175  */
  176 typedef void (*dev_lookup_fn)(void *arg, const char *name,
  177     device_t *result);
  178 EVENTHANDLER_DECLARE(dev_lookup, dev_lookup_fn);
  179 
  180 /**
  181  * @brief A device driver (included mainly for compatibility with
  182  * FreeBSD 4.x).
  183  */
  184 typedef struct kobj_class       driver_t;
  185 
  186 /**
  187  * @brief A device class
  188  *
  189  * The devclass object has two main functions in the system. The first
  190  * is to manage the allocation of unit numbers for device instances
  191  * and the second is to hold the list of device drivers for a
  192  * particular bus type. Each devclass has a name and there cannot be
  193  * two devclasses with the same name. This ensures that unique unit
  194  * numbers are allocated to device instances.
  195  *
  196  * Drivers that support several different bus attachments (e.g. isa,
  197  * pci, pccard) should all use the same devclass to ensure that unit
  198  * numbers do not conflict.
  199  *
  200  * Each devclass may also have a parent devclass. This is used when
  201  * searching for device drivers to allow a form of inheritance. When
  202  * matching drivers with devices, first the driver list of the parent
  203  * device's devclass is searched. If no driver is found in that list,
  204  * the search continues in the parent devclass (if any).
  205  */
  206 typedef struct devclass         *devclass_t;
  207 
  208 /**
  209  * @brief A device method
  210  */
  211 #define device_method_t         kobj_method_t
  212 
  213 /**
  214  * @brief Driver interrupt filter return values
  215  *
  216  * If a driver provides an interrupt filter routine it must return an
  217  * integer consisting of oring together zero or more of the following
  218  * flags:
  219  *
  220  *      FILTER_STRAY    - this device did not trigger the interrupt
  221  *      FILTER_HANDLED  - the interrupt has been fully handled and can be EOId
  222  *      FILTER_SCHEDULE_THREAD - the threaded interrupt handler should be
  223  *                        scheduled to execute
  224  *
  225  * If the driver does not provide a filter, then the interrupt code will
  226  * act is if the filter had returned FILTER_SCHEDULE_THREAD.  Note that it
  227  * is illegal to specify any other flag with FILTER_STRAY and that it is
  228  * illegal to not specify either of FILTER_HANDLED or FILTER_SCHEDULE_THREAD
  229  * if FILTER_STRAY is not specified.
  230  */
  231 #define FILTER_STRAY            0x01
  232 #define FILTER_HANDLED          0x02
  233 #define FILTER_SCHEDULE_THREAD  0x04
  234 
  235 /**
  236  * @brief Driver interrupt service routines
  237  *
  238  * The filter routine is run in primary interrupt context and may not
  239  * block or use regular mutexes.  It may only use spin mutexes for
  240  * synchronization.  The filter may either completely handle the
  241  * interrupt or it may perform some of the work and defer more
  242  * expensive work to the regular interrupt handler.  If a filter
  243  * routine is not registered by the driver, then the regular interrupt
  244  * handler is always used to handle interrupts from this device.
  245  *
  246  * The regular interrupt handler executes in its own thread context
  247  * and may use regular mutexes.  However, it is prohibited from
  248  * sleeping on a sleep queue.
  249  */
  250 typedef int driver_filter_t(void*);
  251 typedef void driver_intr_t(void*);
  252 
  253 /**
  254  * @brief Interrupt type bits.
  255  * 
  256  * These flags are used both by newbus interrupt
  257  * registration (nexus.c) and also in struct intrec, which defines
  258  * interrupt properties.
  259  *
  260  * XXX We should probably revisit this and remove the vestiges of the
  261  * spls implicit in names like INTR_TYPE_TTY. In the meantime, don't
  262  * confuse things by renaming them (Grog, 18 July 2000).
  263  *
  264  * Buses which do interrupt remapping will want to change their type
  265  * to reflect what sort of devices are underneath.
  266  */
  267 enum intr_type {
  268         INTR_TYPE_TTY = 1,
  269         INTR_TYPE_BIO = 2,
  270         INTR_TYPE_NET = 4,
  271         INTR_TYPE_CAM = 8,
  272         INTR_TYPE_MISC = 16,
  273         INTR_TYPE_CLK = 32,
  274         INTR_TYPE_AV = 64,
  275         INTR_EXCL = 256,                /* exclusive interrupt */
  276         INTR_MPSAFE = 512,              /* this interrupt is SMP safe */
  277         INTR_ENTROPY = 1024,            /* this interrupt provides entropy */
  278         INTR_MD1 = 4096,                /* flag reserved for MD use */
  279         INTR_MD2 = 8192,                /* flag reserved for MD use */
  280         INTR_MD3 = 16384,               /* flag reserved for MD use */
  281         INTR_MD4 = 32768                /* flag reserved for MD use */
  282 };
  283 
  284 enum intr_trigger {
  285         INTR_TRIGGER_INVALID = -1,
  286         INTR_TRIGGER_CONFORM = 0,
  287         INTR_TRIGGER_EDGE = 1,
  288         INTR_TRIGGER_LEVEL = 2
  289 };
  290 
  291 enum intr_polarity {
  292         INTR_POLARITY_CONFORM = 0,
  293         INTR_POLARITY_HIGH = 1,
  294         INTR_POLARITY_LOW = 2
  295 };
  296 
  297 /**
  298  * CPU sets supported by bus_get_cpus().  Note that not all sets may be
  299  * supported for a given device.  If a request is not supported by a
  300  * device (or its parents), then bus_get_cpus() will fail with EINVAL.
  301  */
  302 enum cpu_sets {
  303         LOCAL_CPUS = 0,
  304         INTR_CPUS
  305 };
  306 
  307 typedef int (*devop_t)(void);
  308 
  309 /**
  310  * @brief This structure is deprecated.
  311  *
  312  * Use the kobj(9) macro DEFINE_CLASS to
  313  * declare classes which implement device drivers.
  314  */
  315 struct driver {
  316         KOBJ_CLASS_FIELDS;
  317 };
  318 
  319 /**
  320  * @brief A resource mapping.
  321  */
  322 struct resource_map {
  323         bus_space_tag_t r_bustag;
  324         bus_space_handle_t r_bushandle;
  325         bus_size_t r_size;
  326         void    *r_vaddr;
  327 };
  328         
  329 /**
  330  * @brief Optional properties of a resource mapping request.
  331  */
  332 struct resource_map_request {
  333         size_t  size;
  334         rman_res_t offset;
  335         rman_res_t length;
  336         vm_memattr_t memattr;
  337 };
  338 
  339 void    resource_init_map_request_impl(struct resource_map_request *_args,
  340             size_t _sz);
  341 #define resource_init_map_request(rmr)                                  \
  342         resource_init_map_request_impl((rmr), sizeof(*(rmr)))
  343 
  344 /*
  345  * Definitions for drivers which need to keep simple lists of resources
  346  * for their child devices.
  347  */
  348 struct  resource;
  349 
  350 /**
  351  * @brief An entry for a single resource in a resource list.
  352  */
  353 struct resource_list_entry {
  354         STAILQ_ENTRY(resource_list_entry) link;
  355         int     type;                   /**< @brief type argument to alloc_resource */
  356         int     rid;                    /**< @brief resource identifier */
  357         int     flags;                  /**< @brief resource flags */
  358         struct  resource *res;          /**< @brief the real resource when allocated */
  359         rman_res_t      start;          /**< @brief start of resource range */
  360         rman_res_t      end;            /**< @brief end of resource range */
  361         rman_res_t      count;                  /**< @brief count within range */
  362 };
  363 STAILQ_HEAD(resource_list, resource_list_entry);
  364 
  365 #define RLE_RESERVED            0x0001  /* Reserved by the parent bus. */
  366 #define RLE_ALLOCATED           0x0002  /* Reserved resource is allocated. */
  367 #define RLE_PREFETCH            0x0004  /* Resource is a prefetch range. */
  368 
  369 void    resource_list_init(struct resource_list *rl);
  370 void    resource_list_free(struct resource_list *rl);
  371 struct resource_list_entry *
  372         resource_list_add(struct resource_list *rl,
  373                           int type, int rid,
  374                           rman_res_t start, rman_res_t end, rman_res_t count);
  375 int     resource_list_add_next(struct resource_list *rl,
  376                           int type,
  377                           rman_res_t start, rman_res_t end, rman_res_t count);
  378 int     resource_list_busy(struct resource_list *rl,
  379                            int type, int rid);
  380 int     resource_list_reserved(struct resource_list *rl, int type, int rid);
  381 struct resource_list_entry*
  382         resource_list_find(struct resource_list *rl,
  383                            int type, int rid);
  384 void    resource_list_delete(struct resource_list *rl,
  385                              int type, int rid);
  386 struct resource *
  387         resource_list_alloc(struct resource_list *rl,
  388                             device_t bus, device_t child,
  389                             int type, int *rid,
  390                             rman_res_t start, rman_res_t end,
  391                             rman_res_t count, u_int flags);
  392 int     resource_list_release(struct resource_list *rl,
  393                               device_t bus, device_t child,
  394                               int type, int rid, struct resource *res);
  395 int     resource_list_release_active(struct resource_list *rl,
  396                                      device_t bus, device_t child,
  397                                      int type);
  398 struct resource *
  399         resource_list_reserve(struct resource_list *rl,
  400                               device_t bus, device_t child,
  401                               int type, int *rid,
  402                               rman_res_t start, rman_res_t end,
  403                               rman_res_t count, u_int flags);
  404 int     resource_list_unreserve(struct resource_list *rl,
  405                                 device_t bus, device_t child,
  406                                 int type, int rid);
  407 void    resource_list_purge(struct resource_list *rl);
  408 int     resource_list_print_type(struct resource_list *rl,
  409                                  const char *name, int type,
  410                                  const char *format);
  411 
  412 /*
  413  * The root bus, to which all top-level buses are attached.
  414  */
  415 extern device_t root_bus;
  416 extern devclass_t root_devclass;
  417 void    root_bus_configure(void);
  418 
  419 /*
  420  * Useful functions for implementing buses.
  421  */
  422 
  423 int     bus_generic_activate_resource(device_t dev, device_t child, int type,
  424                                       int rid, struct resource *r);
  425 device_t
  426         bus_generic_add_child(device_t dev, u_int order, const char *name,
  427                               int unit);
  428 int     bus_generic_adjust_resource(device_t bus, device_t child, int type,
  429                                     struct resource *r, rman_res_t start,
  430                                     rman_res_t end);
  431 struct resource *
  432         bus_generic_alloc_resource(device_t bus, device_t child, int type,
  433                                    int *rid, rman_res_t start, rman_res_t end,
  434                                    rman_res_t count, u_int flags);
  435 int     bus_generic_translate_resource(device_t dev, int type, rman_res_t start,
  436                               rman_res_t *newstart);
  437 int     bus_generic_attach(device_t dev);
  438 int     bus_generic_bind_intr(device_t dev, device_t child,
  439                               struct resource *irq, int cpu);
  440 int     bus_generic_child_present(device_t dev, device_t child);
  441 int     bus_generic_config_intr(device_t, int, enum intr_trigger,
  442                                 enum intr_polarity);
  443 int     bus_generic_describe_intr(device_t dev, device_t child,
  444                                   struct resource *irq, void *cookie,
  445                                   const char *descr);
  446 int     bus_generic_deactivate_resource(device_t dev, device_t child, int type,
  447                                         int rid, struct resource *r);
  448 int     bus_generic_detach(device_t dev);
  449 void    bus_generic_driver_added(device_t dev, driver_t *driver);
  450 int     bus_generic_get_cpus(device_t dev, device_t child, enum cpu_sets op,
  451                              size_t setsize, struct _cpuset *cpuset);
  452 bus_dma_tag_t
  453         bus_generic_get_dma_tag(device_t dev, device_t child);
  454 bus_space_tag_t
  455         bus_generic_get_bus_tag(device_t dev, device_t child);
  456 int     bus_generic_get_domain(device_t dev, device_t child, int *domain);
  457 struct resource_list *
  458         bus_generic_get_resource_list (device_t, device_t);
  459 int     bus_generic_map_resource(device_t dev, device_t child, int type,
  460                                  struct resource *r,
  461                                  struct resource_map_request *args,
  462                                  struct resource_map *map);
  463 void    bus_generic_new_pass(device_t dev);
  464 int     bus_print_child_header(device_t dev, device_t child);
  465 int     bus_print_child_domain(device_t dev, device_t child);
  466 int     bus_print_child_footer(device_t dev, device_t child);
  467 int     bus_generic_print_child(device_t dev, device_t child);
  468 int     bus_generic_probe(device_t dev);
  469 int     bus_generic_read_ivar(device_t dev, device_t child, int which,
  470                               uintptr_t *result);
  471 int     bus_generic_release_resource(device_t bus, device_t child,
  472                                      int type, int rid, struct resource *r);
  473 int     bus_generic_resume(device_t dev);
  474 int     bus_generic_resume_child(device_t dev, device_t child);
  475 int     bus_generic_setup_intr(device_t dev, device_t child,
  476                                struct resource *irq, int flags,
  477                                driver_filter_t *filter, driver_intr_t *intr, 
  478                                void *arg, void **cookiep);
  479 
  480 struct resource *
  481         bus_generic_rl_alloc_resource (device_t, device_t, int, int *,
  482                                        rman_res_t, rman_res_t, rman_res_t, u_int);
  483 void    bus_generic_rl_delete_resource (device_t, device_t, int, int);
  484 int     bus_generic_rl_get_resource (device_t, device_t, int, int, rman_res_t *,
  485                                      rman_res_t *);
  486 int     bus_generic_rl_set_resource (device_t, device_t, int, int, rman_res_t,
  487                                      rman_res_t);
  488 int     bus_generic_rl_release_resource (device_t, device_t, int, int,
  489                                          struct resource *);
  490 
  491 int     bus_generic_shutdown(device_t dev);
  492 int     bus_generic_suspend(device_t dev);
  493 int     bus_generic_suspend_child(device_t dev, device_t child);
  494 int     bus_generic_teardown_intr(device_t dev, device_t child,
  495                                   struct resource *irq, void *cookie);
  496 int     bus_generic_suspend_intr(device_t dev, device_t child,
  497                                   struct resource *irq);
  498 int     bus_generic_resume_intr(device_t dev, device_t child,
  499                                   struct resource *irq);
  500 int     bus_generic_unmap_resource(device_t dev, device_t child, int type,
  501                                    struct resource *r,
  502                                    struct resource_map *map);
  503 int     bus_generic_write_ivar(device_t dev, device_t child, int which,
  504                                uintptr_t value);
  505 int     bus_helper_reset_post(device_t dev, int flags);
  506 int     bus_helper_reset_prepare(device_t dev, int flags);
  507 int     bus_null_rescan(device_t dev);
  508 
  509 /*
  510  * Wrapper functions for the BUS_*_RESOURCE methods to make client code
  511  * a little simpler.
  512  */
  513 
  514 struct resource_spec {
  515         int     type;
  516         int     rid;
  517         int     flags;
  518 };
  519 #define RESOURCE_SPEC_END       {-1, 0, 0}
  520 
  521 int     bus_alloc_resources(device_t dev, struct resource_spec *rs,
  522                             struct resource **res);
  523 void    bus_release_resources(device_t dev, const struct resource_spec *rs,
  524                               struct resource **res);
  525 
  526 int     bus_adjust_resource(device_t child, int type, struct resource *r,
  527                             rman_res_t start, rman_res_t end);
  528 struct  resource *bus_alloc_resource(device_t dev, int type, int *rid,
  529                                      rman_res_t start, rman_res_t end,
  530                                      rman_res_t count, u_int flags);
  531 int     bus_activate_resource(device_t dev, int type, int rid,
  532                               struct resource *r);
  533 int     bus_deactivate_resource(device_t dev, int type, int rid,
  534                                 struct resource *r);
  535 int     bus_map_resource(device_t dev, int type, struct resource *r,
  536                          struct resource_map_request *args,
  537                          struct resource_map *map);
  538 int     bus_unmap_resource(device_t dev, int type, struct resource *r,
  539                            struct resource_map *map);
  540 int     bus_get_cpus(device_t dev, enum cpu_sets op, size_t setsize,
  541                      struct _cpuset *cpuset);
  542 bus_dma_tag_t bus_get_dma_tag(device_t dev);
  543 bus_space_tag_t bus_get_bus_tag(device_t dev);
  544 int     bus_get_domain(device_t dev, int *domain);
  545 int     bus_release_resource(device_t dev, int type, int rid,
  546                              struct resource *r);
  547 int     bus_free_resource(device_t dev, int type, struct resource *r);
  548 int     bus_setup_intr(device_t dev, struct resource *r, int flags,
  549                        driver_filter_t filter, driver_intr_t handler, 
  550                        void *arg, void **cookiep);
  551 int     bus_teardown_intr(device_t dev, struct resource *r, void *cookie);
  552 int     bus_suspend_intr(device_t dev, struct resource *r);
  553 int     bus_resume_intr(device_t dev, struct resource *r);
  554 int     bus_bind_intr(device_t dev, struct resource *r, int cpu);
  555 int     bus_describe_intr(device_t dev, struct resource *irq, void *cookie,
  556                           const char *fmt, ...) __printflike(4, 5);
  557 int     bus_set_resource(device_t dev, int type, int rid,
  558                          rman_res_t start, rman_res_t count);
  559 int     bus_get_resource(device_t dev, int type, int rid,
  560                          rman_res_t *startp, rman_res_t *countp);
  561 rman_res_t      bus_get_resource_start(device_t dev, int type, int rid);
  562 rman_res_t      bus_get_resource_count(device_t dev, int type, int rid);
  563 void    bus_delete_resource(device_t dev, int type, int rid);
  564 int     bus_child_present(device_t child);
  565 int     bus_child_pnpinfo_str(device_t child, char *buf, size_t buflen);
  566 int     bus_child_location_str(device_t child, char *buf, size_t buflen);
  567 void    bus_enumerate_hinted_children(device_t bus);
  568 int     bus_delayed_attach_children(device_t bus);
  569 
  570 static __inline struct resource *
  571 bus_alloc_resource_any(device_t dev, int type, int *rid, u_int flags)
  572 {
  573         return (bus_alloc_resource(dev, type, rid, 0, ~0, 1, flags));
  574 }
  575 
  576 static __inline struct resource *
  577 bus_alloc_resource_anywhere(device_t dev, int type, int *rid,
  578     rman_res_t count, u_int flags)
  579 {
  580         return (bus_alloc_resource(dev, type, rid, 0, ~0, count, flags));
  581 }
  582 
  583 /*
  584  * Access functions for device.
  585  */
  586 device_t        device_add_child(device_t dev, const char *name, int unit);
  587 device_t        device_add_child_ordered(device_t dev, u_int order,
  588                                          const char *name, int unit);
  589 void    device_busy(device_t dev);
  590 int     device_delete_child(device_t dev, device_t child);
  591 int     device_delete_children(device_t dev);
  592 int     device_attach(device_t dev);
  593 int     device_detach(device_t dev);
  594 void    device_disable(device_t dev);
  595 void    device_enable(device_t dev);
  596 device_t        device_find_child(device_t dev, const char *classname,
  597                                   int unit);
  598 const char      *device_get_desc(device_t dev);
  599 devclass_t      device_get_devclass(device_t dev);
  600 driver_t        *device_get_driver(device_t dev);
  601 u_int32_t       device_get_flags(device_t dev);
  602 device_t        device_get_parent(device_t dev);
  603 int     device_get_children(device_t dev, device_t **listp, int *countp);
  604 void    *device_get_ivars(device_t dev);
  605 void    device_set_ivars(device_t dev, void *ivars);
  606 const   char *device_get_name(device_t dev);
  607 const   char *device_get_nameunit(device_t dev);
  608 void    *device_get_softc(device_t dev);
  609 device_state_t  device_get_state(device_t dev);
  610 int     device_get_unit(device_t dev);
  611 struct sysctl_ctx_list *device_get_sysctl_ctx(device_t dev);
  612 struct sysctl_oid *device_get_sysctl_tree(device_t dev);
  613 int     device_has_quiet_children(device_t dev);
  614 int     device_is_alive(device_t dev);  /* did probe succeed? */
  615 int     device_is_attached(device_t dev);       /* did attach succeed? */
  616 int     device_is_enabled(device_t dev);
  617 int     device_is_suspended(device_t dev);
  618 int     device_is_quiet(device_t dev);
  619 device_t device_lookup_by_name(const char *name);
  620 int     device_print_prettyname(device_t dev);
  621 int     device_printf(device_t dev, const char *, ...) __printflike(2, 3);
  622 int     device_probe(device_t dev);
  623 int     device_probe_and_attach(device_t dev);
  624 int     device_probe_child(device_t bus, device_t dev);
  625 int     device_quiesce(device_t dev);
  626 void    device_quiet(device_t dev);
  627 void    device_quiet_children(device_t dev);
  628 void    device_set_desc(device_t dev, const char* desc);
  629 void    device_set_desc_copy(device_t dev, const char* desc);
  630 int     device_set_devclass(device_t dev, const char *classname);
  631 int     device_set_devclass_fixed(device_t dev, const char *classname);
  632 int     device_set_driver(device_t dev, driver_t *driver);
  633 void    device_set_flags(device_t dev, u_int32_t flags);
  634 void    device_set_softc(device_t dev, void *softc);
  635 void    device_free_softc(void *softc);
  636 void    device_claim_softc(device_t dev);
  637 int     device_set_unit(device_t dev, int unit);        /* XXX DONT USE XXX */
  638 int     device_shutdown(device_t dev);
  639 void    device_unbusy(device_t dev);
  640 void    device_verbose(device_t dev);
  641 
  642 /*
  643  * Access functions for devclass.
  644  */
  645 int             devclass_add_driver(devclass_t dc, driver_t *driver,
  646                                     int pass, devclass_t *dcp);
  647 devclass_t      devclass_create(const char *classname);
  648 int             devclass_delete_driver(devclass_t busclass, driver_t *driver);
  649 devclass_t      devclass_find(const char *classname);
  650 const char      *devclass_get_name(devclass_t dc);
  651 device_t        devclass_get_device(devclass_t dc, int unit);
  652 void    *devclass_get_softc(devclass_t dc, int unit);
  653 int     devclass_get_devices(devclass_t dc, device_t **listp, int *countp);
  654 int     devclass_get_drivers(devclass_t dc, driver_t ***listp, int *countp);
  655 int     devclass_get_count(devclass_t dc);
  656 int     devclass_get_maxunit(devclass_t dc);
  657 int     devclass_find_free_unit(devclass_t dc, int unit);
  658 void    devclass_set_parent(devclass_t dc, devclass_t pdc);
  659 devclass_t      devclass_get_parent(devclass_t dc);
  660 struct sysctl_ctx_list *devclass_get_sysctl_ctx(devclass_t dc);
  661 struct sysctl_oid *devclass_get_sysctl_tree(devclass_t dc);
  662 
  663 /*
  664  * Access functions for device resources.
  665  */
  666 int     resource_int_value(const char *name, int unit, const char *resname,
  667                            int *result);
  668 int     resource_long_value(const char *name, int unit, const char *resname,
  669                             long *result);
  670 int     resource_string_value(const char *name, int unit, const char *resname,
  671                               const char **result);
  672 int     resource_disabled(const char *name, int unit);
  673 int     resource_find_match(int *anchor, const char **name, int *unit,
  674                             const char *resname, const char *value);
  675 int     resource_find_dev(int *anchor, const char *name, int *unit,
  676                           const char *resname, const char *value);
  677 int     resource_unset_value(const char *name, int unit, const char *resname);
  678 
  679 /*
  680  * Functions for maintaining and checking consistency of
  681  * bus information exported to userspace.
  682  */
  683 int     bus_data_generation_check(int generation);
  684 void    bus_data_generation_update(void);
  685 
  686 /**
  687  * Some convenience defines for probe routines to return.  These are just
  688  * suggested values, and there's nothing magical about them.
  689  * BUS_PROBE_SPECIFIC is for devices that cannot be reprobed, and that no
  690  * possible other driver may exist (typically legacy drivers who don't follow
  691  * all the rules, or special needs drivers).  BUS_PROBE_VENDOR is the
  692  * suggested value that vendor supplied drivers use.  This is for source or
  693  * binary drivers that are not yet integrated into the FreeBSD tree.  Its use
  694  * in the base OS is prohibited.  BUS_PROBE_DEFAULT is the normal return value
  695  * for drivers to use.  It is intended that nearly all of the drivers in the
  696  * tree should return this value.  BUS_PROBE_LOW_PRIORITY are for drivers that
  697  * have special requirements like when there are two drivers that support
  698  * overlapping series of hardware devices.  In this case the one that supports
  699  * the older part of the line would return this value, while the one that
  700  * supports the newer ones would return BUS_PROBE_DEFAULT.  BUS_PROBE_GENERIC
  701  * is for drivers that wish to have a generic form and a specialized form,
  702  * like is done with the pci bus and the acpi pci bus.  BUS_PROBE_HOOVER is
  703  * for those buses that implement a generic device placeholder for devices on
  704  * the bus that have no more specific driver for them (aka ugen).
  705  * BUS_PROBE_NOWILDCARD or lower means that the device isn't really bidding
  706  * for a device node, but accepts only devices that its parent has told it
  707  * use this driver.
  708  */
  709 #define BUS_PROBE_SPECIFIC      0       /* Only I can use this device */
  710 #define BUS_PROBE_VENDOR        (-10)   /* Vendor supplied driver */
  711 #define BUS_PROBE_DEFAULT       (-20)   /* Base OS default driver */
  712 #define BUS_PROBE_LOW_PRIORITY  (-40)   /* Older, less desirable drivers */
  713 #define BUS_PROBE_GENERIC       (-100)  /* generic driver for dev */
  714 #define BUS_PROBE_HOOVER        (-1000000) /* Driver for any dev on bus */
  715 #define BUS_PROBE_NOWILDCARD    (-2000000000) /* No wildcard device matches */
  716 
  717 /**
  718  * During boot, the device tree is scanned multiple times.  Each scan,
  719  * or pass, drivers may be attached to devices.  Each driver
  720  * attachment is assigned a pass number.  Drivers may only probe and
  721  * attach to devices if their pass number is less than or equal to the
  722  * current system-wide pass number.  The default pass is the last pass
  723  * and is used by most drivers.  Drivers needed by the scheduler are
  724  * probed in earlier passes.
  725  */
  726 #define BUS_PASS_ROOT           0       /* Used to attach root0. */
  727 #define BUS_PASS_BUS            10      /* Buses and bridges. */
  728 #define BUS_PASS_CPU            20      /* CPU devices. */
  729 #define BUS_PASS_RESOURCE       30      /* Resource discovery. */
  730 #define BUS_PASS_INTERRUPT      40      /* Interrupt controllers. */
  731 #define BUS_PASS_TIMER          50      /* Timers and clocks. */
  732 #define BUS_PASS_SCHEDULER      60      /* Start scheduler. */
  733 #define BUS_PASS_SUPPORTDEV     100000  /* Drivers which support DEFAULT drivers. */
  734 #define BUS_PASS_DEFAULT        __INT_MAX /* Everything else. */
  735 
  736 #define BUS_PASS_ORDER_FIRST    0
  737 #define BUS_PASS_ORDER_EARLY    2
  738 #define BUS_PASS_ORDER_MIDDLE   5
  739 #define BUS_PASS_ORDER_LATE     7
  740 #define BUS_PASS_ORDER_LAST     9
  741 
  742 extern int bus_current_pass;
  743 
  744 void    bus_set_pass(int pass);
  745 
  746 /**
  747  * Shorthands for constructing method tables.
  748  */
  749 #define DEVMETHOD       KOBJMETHOD
  750 #define DEVMETHOD_END   KOBJMETHOD_END
  751 
  752 /*
  753  * Some common device interfaces.
  754  */
  755 #include "device_if.h"
  756 #include "bus_if.h"
  757 
  758 struct  module;
  759 
  760 int     driver_module_handler(struct module *, int, void *);
  761 
  762 /**
  763  * Module support for automatically adding drivers to buses.
  764  */
  765 struct driver_module_data {
  766         int             (*dmd_chainevh)(struct module *, int, void *);
  767         void            *dmd_chainarg;
  768         const char      *dmd_busname;
  769         kobj_class_t    dmd_driver;
  770         devclass_t      *dmd_devclass;
  771         int             dmd_pass;
  772 };
  773 
  774 #define EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass,    \
  775     evh, arg, order, pass)                                              \
  776                                                                         \
  777 static struct driver_module_data name##_##busname##_driver_mod = {      \
  778         evh, arg,                                                       \
  779         #busname,                                                       \
  780         (kobj_class_t) &driver,                                         \
  781         &devclass,                                                      \
  782         pass                                                            \
  783 };                                                                      \
  784                                                                         \
  785 static moduledata_t name##_##busname##_mod = {                          \
  786         #busname "/" #name,                                             \
  787         driver_module_handler,                                          \
  788         &name##_##busname##_driver_mod                                  \
  789 };                                                                      \
  790 DECLARE_MODULE(name##_##busname, name##_##busname##_mod,                \
  791                SI_SUB_DRIVERS, order)
  792 
  793 #define EARLY_DRIVER_MODULE(name, busname, driver, devclass, evh, arg, pass) \
  794         EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass,    \
  795             evh, arg, SI_ORDER_MIDDLE, pass)
  796 
  797 #define DRIVER_MODULE_ORDERED(name, busname, driver, devclass, evh, arg,\
  798     order)                                                              \
  799         EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass,    \
  800             evh, arg, order, BUS_PASS_DEFAULT)
  801 
  802 #define DRIVER_MODULE(name, busname, driver, devclass, evh, arg)        \
  803         EARLY_DRIVER_MODULE(name, busname, driver, devclass, evh, arg,  \
  804             BUS_PASS_DEFAULT)
  805 
  806 /**
  807  * Generic ivar accessor generation macros for bus drivers
  808  */
  809 #define __BUS_ACCESSOR(varp, var, ivarp, ivar, type)                    \
  810                                                                         \
  811 static __inline type varp ## _get_ ## var(device_t dev)                 \
  812 {                                                                       \
  813         uintptr_t v;                                                    \
  814         int e;                                                          \
  815         e = BUS_READ_IVAR(device_get_parent(dev), dev,                  \
  816             ivarp ## _IVAR_ ## ivar, &v);                               \
  817         KASSERT(e == 0, ("%s failed for %s on bus %s, error = %d",      \
  818             __func__, device_get_nameunit(dev),                         \
  819             device_get_nameunit(device_get_parent(dev)), e));           \
  820         return ((type) v);                                              \
  821 }                                                                       \
  822                                                                         \
  823 static __inline void varp ## _set_ ## var(device_t dev, type t)         \
  824 {                                                                       \
  825         uintptr_t v = (uintptr_t) t;                                    \
  826         int e;                                                          \
  827         e = BUS_WRITE_IVAR(device_get_parent(dev), dev,                 \
  828             ivarp ## _IVAR_ ## ivar, v);                                \
  829         KASSERT(e == 0, ("%s failed for %s on bus %s, error = %d",      \
  830             __func__, device_get_nameunit(dev),                         \
  831             device_get_nameunit(device_get_parent(dev)), e));           \
  832 }
  833 
  834 /**
  835  * Shorthand macros, taking resource argument
  836  * Generated with sys/tools/bus_macro.sh
  837  */
  838 
  839 #define bus_barrier(r, o, l, f) \
  840         bus_space_barrier((r)->r_bustag, (r)->r_bushandle, (o), (l), (f))
  841 #define bus_read_1(r, o) \
  842         bus_space_read_1((r)->r_bustag, (r)->r_bushandle, (o))
  843 #define bus_read_multi_1(r, o, d, c) \
  844         bus_space_read_multi_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  845 #define bus_read_region_1(r, o, d, c) \
  846         bus_space_read_region_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  847 #define bus_set_multi_1(r, o, v, c) \
  848         bus_space_set_multi_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  849 #define bus_set_region_1(r, o, v, c) \
  850         bus_space_set_region_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  851 #define bus_write_1(r, o, v) \
  852         bus_space_write_1((r)->r_bustag, (r)->r_bushandle, (o), (v))
  853 #define bus_write_multi_1(r, o, d, c) \
  854         bus_space_write_multi_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  855 #define bus_write_region_1(r, o, d, c) \
  856         bus_space_write_region_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  857 #define bus_read_stream_1(r, o) \
  858         bus_space_read_stream_1((r)->r_bustag, (r)->r_bushandle, (o))
  859 #define bus_read_multi_stream_1(r, o, d, c) \
  860         bus_space_read_multi_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  861 #define bus_read_region_stream_1(r, o, d, c) \
  862         bus_space_read_region_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  863 #define bus_set_multi_stream_1(r, o, v, c) \
  864         bus_space_set_multi_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  865 #define bus_set_region_stream_1(r, o, v, c) \
  866         bus_space_set_region_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  867 #define bus_write_stream_1(r, o, v) \
  868         bus_space_write_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (v))
  869 #define bus_write_multi_stream_1(r, o, d, c) \
  870         bus_space_write_multi_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  871 #define bus_write_region_stream_1(r, o, d, c) \
  872         bus_space_write_region_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  873 #define bus_read_2(r, o) \
  874         bus_space_read_2((r)->r_bustag, (r)->r_bushandle, (o))
  875 #define bus_read_multi_2(r, o, d, c) \
  876         bus_space_read_multi_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  877 #define bus_read_region_2(r, o, d, c) \
  878         bus_space_read_region_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  879 #define bus_set_multi_2(r, o, v, c) \
  880         bus_space_set_multi_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  881 #define bus_set_region_2(r, o, v, c) \
  882         bus_space_set_region_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  883 #define bus_write_2(r, o, v) \
  884         bus_space_write_2((r)->r_bustag, (r)->r_bushandle, (o), (v))
  885 #define bus_write_multi_2(r, o, d, c) \
  886         bus_space_write_multi_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  887 #define bus_write_region_2(r, o, d, c) \
  888         bus_space_write_region_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  889 #define bus_read_stream_2(r, o) \
  890         bus_space_read_stream_2((r)->r_bustag, (r)->r_bushandle, (o))
  891 #define bus_read_multi_stream_2(r, o, d, c) \
  892         bus_space_read_multi_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  893 #define bus_read_region_stream_2(r, o, d, c) \
  894         bus_space_read_region_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  895 #define bus_set_multi_stream_2(r, o, v, c) \
  896         bus_space_set_multi_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  897 #define bus_set_region_stream_2(r, o, v, c) \
  898         bus_space_set_region_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  899 #define bus_write_stream_2(r, o, v) \
  900         bus_space_write_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (v))
  901 #define bus_write_multi_stream_2(r, o, d, c) \
  902         bus_space_write_multi_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  903 #define bus_write_region_stream_2(r, o, d, c) \
  904         bus_space_write_region_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  905 #define bus_read_4(r, o) \
  906         bus_space_read_4((r)->r_bustag, (r)->r_bushandle, (o))
  907 #define bus_read_multi_4(r, o, d, c) \
  908         bus_space_read_multi_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  909 #define bus_read_region_4(r, o, d, c) \
  910         bus_space_read_region_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  911 #define bus_set_multi_4(r, o, v, c) \
  912         bus_space_set_multi_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  913 #define bus_set_region_4(r, o, v, c) \
  914         bus_space_set_region_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  915 #define bus_write_4(r, o, v) \
  916         bus_space_write_4((r)->r_bustag, (r)->r_bushandle, (o), (v))
  917 #define bus_write_multi_4(r, o, d, c) \
  918         bus_space_write_multi_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  919 #define bus_write_region_4(r, o, d, c) \
  920         bus_space_write_region_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  921 #define bus_read_stream_4(r, o) \
  922         bus_space_read_stream_4((r)->r_bustag, (r)->r_bushandle, (o))
  923 #define bus_read_multi_stream_4(r, o, d, c) \
  924         bus_space_read_multi_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  925 #define bus_read_region_stream_4(r, o, d, c) \
  926         bus_space_read_region_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  927 #define bus_set_multi_stream_4(r, o, v, c) \
  928         bus_space_set_multi_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  929 #define bus_set_region_stream_4(r, o, v, c) \
  930         bus_space_set_region_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  931 #define bus_write_stream_4(r, o, v) \
  932         bus_space_write_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (v))
  933 #define bus_write_multi_stream_4(r, o, d, c) \
  934         bus_space_write_multi_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  935 #define bus_write_region_stream_4(r, o, d, c) \
  936         bus_space_write_region_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  937 #define bus_read_8(r, o) \
  938         bus_space_read_8((r)->r_bustag, (r)->r_bushandle, (o))
  939 #define bus_read_multi_8(r, o, d, c) \
  940         bus_space_read_multi_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  941 #define bus_read_region_8(r, o, d, c) \
  942         bus_space_read_region_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  943 #define bus_set_multi_8(r, o, v, c) \
  944         bus_space_set_multi_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  945 #define bus_set_region_8(r, o, v, c) \
  946         bus_space_set_region_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  947 #define bus_write_8(r, o, v) \
  948         bus_space_write_8((r)->r_bustag, (r)->r_bushandle, (o), (v))
  949 #define bus_write_multi_8(r, o, d, c) \
  950         bus_space_write_multi_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  951 #define bus_write_region_8(r, o, d, c) \
  952         bus_space_write_region_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  953 #define bus_read_stream_8(r, o) \
  954         bus_space_read_stream_8((r)->r_bustag, (r)->r_bushandle, (o))
  955 #define bus_read_multi_stream_8(r, o, d, c) \
  956         bus_space_read_multi_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  957 #define bus_read_region_stream_8(r, o, d, c) \
  958         bus_space_read_region_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  959 #define bus_set_multi_stream_8(r, o, v, c) \
  960         bus_space_set_multi_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  961 #define bus_set_region_stream_8(r, o, v, c) \
  962         bus_space_set_region_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
  963 #define bus_write_stream_8(r, o, v) \
  964         bus_space_write_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (v))
  965 #define bus_write_multi_stream_8(r, o, d, c) \
  966         bus_space_write_multi_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  967 #define bus_write_region_stream_8(r, o, d, c) \
  968         bus_space_write_region_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
  969 #endif /* _KERNEL */
  970 
  971 #endif /* !_SYS_BUS_H_ */

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