2ff7c2cc4f
in the generated functions for bus accessors. These are the most noising instances for drivers when non-debug kernel is compiled with clang 13. Reviewed by: imp Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D32578
982 lines
38 KiB
C
982 lines
38 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1997,1998,2003 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_BUS_H_
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#define _SYS_BUS_H_
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#include <machine/_limits.h>
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#include <machine/_bus.h>
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#include <sys/_bus_dma.h>
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#include <sys/ioccom.h>
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/**
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* @defgroup NEWBUS newbus - a generic framework for managing devices
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* @{
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*/
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/**
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* @brief Interface information structure.
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*/
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struct u_businfo {
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int ub_version; /**< @brief interface version */
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#define BUS_USER_VERSION 2
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int ub_generation; /**< @brief generation count */
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};
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/**
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* @brief State of the device.
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*/
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typedef enum device_state {
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DS_NOTPRESENT = 10, /**< @brief not probed or probe failed */
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DS_ALIVE = 20, /**< @brief probe succeeded */
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DS_ATTACHING = 25, /**< @brief currently attaching */
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DS_ATTACHED = 30, /**< @brief attach method called */
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DS_BUSY = 40 /**< @brief device is open */
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} device_state_t;
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/**
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* @brief Device information exported to userspace.
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* The strings are placed one after the other, separated by NUL characters.
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* Fields should be added after the last one and order maintained for compatibility
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*/
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#define BUS_USER_BUFFER (3*1024)
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struct u_device {
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uintptr_t dv_handle;
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uintptr_t dv_parent;
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uint32_t dv_devflags; /**< @brief API Flags for device */
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uint16_t dv_flags; /**< @brief flags for dev state */
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device_state_t dv_state; /**< @brief State of attachment */
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char dv_fields[BUS_USER_BUFFER]; /**< @brief NUL terminated fields */
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/* name (name of the device in tree) */
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/* desc (driver description) */
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/* drivername (Name of driver without unit number) */
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/* pnpinfo (Plug and play information from bus) */
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/* location (Location of device on parent */
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/* NUL */
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};
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/* Flags exported via dv_flags. */
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#define DF_ENABLED 0x01 /* device should be probed/attached */
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#define DF_FIXEDCLASS 0x02 /* devclass specified at create time */
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#define DF_WILDCARD 0x04 /* unit was originally wildcard */
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#define DF_DESCMALLOCED 0x08 /* description was malloced */
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#define DF_QUIET 0x10 /* don't print verbose attach message */
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#define DF_DONENOMATCH 0x20 /* don't execute DEVICE_NOMATCH again */
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#define DF_EXTERNALSOFTC 0x40 /* softc not allocated by us */
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#define DF_SUSPENDED 0x100 /* Device is suspended. */
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#define DF_QUIET_CHILDREN 0x200 /* Default to quiet for all my children */
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#define DF_ATTACHED_ONCE 0x400 /* Has been attached at least once */
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#define DF_NEEDNOMATCH 0x800 /* Has a pending NOMATCH event */
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/**
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* @brief Device request structure used for ioctl's.
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*
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* Used for ioctl's on /dev/devctl2. All device ioctl's
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* must have parameter definitions which begin with dr_name.
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*/
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struct devreq_buffer {
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void *buffer;
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size_t length;
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};
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struct devreq {
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char dr_name[128];
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int dr_flags; /* request-specific flags */
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union {
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struct devreq_buffer dru_buffer;
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void *dru_data;
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} dr_dru;
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#define dr_buffer dr_dru.dru_buffer /* variable-sized buffer */
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#define dr_data dr_dru.dru_data /* fixed-size buffer */
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};
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#define DEV_ATTACH _IOW('D', 1, struct devreq)
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#define DEV_DETACH _IOW('D', 2, struct devreq)
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#define DEV_ENABLE _IOW('D', 3, struct devreq)
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#define DEV_DISABLE _IOW('D', 4, struct devreq)
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#define DEV_SUSPEND _IOW('D', 5, struct devreq)
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#define DEV_RESUME _IOW('D', 6, struct devreq)
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#define DEV_SET_DRIVER _IOW('D', 7, struct devreq)
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#define DEV_CLEAR_DRIVER _IOW('D', 8, struct devreq)
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#define DEV_RESCAN _IOW('D', 9, struct devreq)
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#define DEV_DELETE _IOW('D', 10, struct devreq)
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#define DEV_FREEZE _IOW('D', 11, struct devreq)
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#define DEV_THAW _IOW('D', 12, struct devreq)
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#define DEV_RESET _IOW('D', 13, struct devreq)
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/* Flags for DEV_DETACH and DEV_DISABLE. */
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#define DEVF_FORCE_DETACH 0x0000001
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/* Flags for DEV_SET_DRIVER. */
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#define DEVF_SET_DRIVER_DETACH 0x0000001 /* Detach existing driver. */
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/* Flags for DEV_CLEAR_DRIVER. */
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#define DEVF_CLEAR_DRIVER_DETACH 0x0000001 /* Detach existing driver. */
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/* Flags for DEV_DELETE. */
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#define DEVF_FORCE_DELETE 0x0000001
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/* Flags for DEV_RESET */
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#define DEVF_RESET_DETACH 0x0000001 /* Detach drivers vs suspend
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device */
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#ifdef _KERNEL
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#include <sys/_eventhandler.h>
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#include <sys/kobj.h>
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#include <sys/systm.h>
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#include <sys/devctl.h>
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/**
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* Device name parsers. Hook to allow device enumerators to map
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* scheme-specific names to a device.
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*/
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typedef void (*dev_lookup_fn)(void *arg, const char *name,
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device_t *result);
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EVENTHANDLER_DECLARE(dev_lookup, dev_lookup_fn);
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/**
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* @brief A device driver.
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*
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* Provides an abstraction layer for driver dispatch.
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*/
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typedef struct kobj_class driver_t;
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/**
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* @brief A device class
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*
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* The devclass object has two main functions in the system. The first
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* is to manage the allocation of unit numbers for device instances
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* and the second is to hold the list of device drivers for a
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* particular bus type. Each devclass has a name and there cannot be
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* two devclasses with the same name. This ensures that unique unit
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* numbers are allocated to device instances.
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*
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* Drivers that support several different bus attachments (e.g. isa,
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* pci, pccard) should all use the same devclass to ensure that unit
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* numbers do not conflict.
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*
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* Each devclass may also have a parent devclass. This is used when
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* searching for device drivers to allow a form of inheritance. When
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* matching drivers with devices, first the driver list of the parent
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* device's devclass is searched. If no driver is found in that list,
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* the search continues in the parent devclass (if any).
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*/
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typedef struct devclass *devclass_t;
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/**
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* @brief A device method
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*/
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#define device_method_t kobj_method_t
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/**
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* @brief Driver interrupt filter return values
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*
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* If a driver provides an interrupt filter routine it must return an
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* integer consisting of oring together zero or more of the following
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* flags:
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*
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* FILTER_STRAY - this device did not trigger the interrupt
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* FILTER_HANDLED - the interrupt has been fully handled and can be EOId
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* FILTER_SCHEDULE_THREAD - the threaded interrupt handler should be
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* scheduled to execute
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*
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* If the driver does not provide a filter, then the interrupt code will
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* act is if the filter had returned FILTER_SCHEDULE_THREAD. Note that it
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* is illegal to specify any other flag with FILTER_STRAY and that it is
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* illegal to not specify either of FILTER_HANDLED or FILTER_SCHEDULE_THREAD
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* if FILTER_STRAY is not specified.
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*/
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#define FILTER_STRAY 0x01
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#define FILTER_HANDLED 0x02
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#define FILTER_SCHEDULE_THREAD 0x04
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/**
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* @brief Driver interrupt service routines
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*
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* The filter routine is run in primary interrupt context and may not
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* block or use regular mutexes. It may only use spin mutexes for
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* synchronization. The filter may either completely handle the
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* interrupt or it may perform some of the work and defer more
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* expensive work to the regular interrupt handler. If a filter
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* routine is not registered by the driver, then the regular interrupt
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* handler is always used to handle interrupts from this device.
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*
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* The regular interrupt handler executes in its own thread context
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* and may use regular mutexes. However, it is prohibited from
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* sleeping on a sleep queue.
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*/
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typedef int driver_filter_t(void*);
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typedef void driver_intr_t(void*);
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/**
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* @brief Interrupt type bits.
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*
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* These flags are used both by newbus interrupt
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* registration (nexus.c) and also in struct intrec, which defines
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* interrupt properties.
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*
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* XXX We should probably revisit this and remove the vestiges of the
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* spls implicit in names like INTR_TYPE_TTY. In the meantime, don't
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* confuse things by renaming them (Grog, 18 July 2000).
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*
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* Buses which do interrupt remapping will want to change their type
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* to reflect what sort of devices are underneath.
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*/
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enum intr_type {
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INTR_TYPE_TTY = 1,
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INTR_TYPE_BIO = 2,
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INTR_TYPE_NET = 4,
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INTR_TYPE_CAM = 8,
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INTR_TYPE_MISC = 16,
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INTR_TYPE_CLK = 32,
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INTR_TYPE_AV = 64,
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INTR_EXCL = 256, /* exclusive interrupt */
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INTR_MPSAFE = 512, /* this interrupt is SMP safe */
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INTR_ENTROPY = 1024, /* this interrupt provides entropy */
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INTR_MD1 = 4096, /* flag reserved for MD use */
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INTR_MD2 = 8192, /* flag reserved for MD use */
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INTR_MD3 = 16384, /* flag reserved for MD use */
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INTR_MD4 = 32768 /* flag reserved for MD use */
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};
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enum intr_trigger {
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INTR_TRIGGER_INVALID = -1,
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INTR_TRIGGER_CONFORM = 0,
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INTR_TRIGGER_EDGE = 1,
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INTR_TRIGGER_LEVEL = 2
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};
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enum intr_polarity {
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INTR_POLARITY_CONFORM = 0,
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INTR_POLARITY_HIGH = 1,
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INTR_POLARITY_LOW = 2
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};
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/**
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* CPU sets supported by bus_get_cpus(). Note that not all sets may be
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* supported for a given device. If a request is not supported by a
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* device (or its parents), then bus_get_cpus() will fail with EINVAL.
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*/
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enum cpu_sets {
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LOCAL_CPUS = 0,
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INTR_CPUS
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};
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typedef int (*devop_t)(void);
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/**
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* @brief This structure is deprecated.
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*
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* Use the kobj(9) macro DEFINE_CLASS to
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* declare classes which implement device drivers.
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*/
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struct driver {
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KOBJ_CLASS_FIELDS;
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};
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/**
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* @brief A resource mapping.
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*/
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struct resource_map {
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bus_space_tag_t r_bustag;
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bus_space_handle_t r_bushandle;
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bus_size_t r_size;
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void *r_vaddr;
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};
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/**
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* @brief Optional properties of a resource mapping request.
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*/
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struct resource_map_request {
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size_t size;
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rman_res_t offset;
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rman_res_t length;
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vm_memattr_t memattr;
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};
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void resource_init_map_request_impl(struct resource_map_request *_args,
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size_t _sz);
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#define resource_init_map_request(rmr) \
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resource_init_map_request_impl((rmr), sizeof(*(rmr)))
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/*
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* Definitions for drivers which need to keep simple lists of resources
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* for their child devices.
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*/
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struct resource;
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/**
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* @brief An entry for a single resource in a resource list.
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*/
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struct resource_list_entry {
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STAILQ_ENTRY(resource_list_entry) link;
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int type; /**< @brief type argument to alloc_resource */
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int rid; /**< @brief resource identifier */
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int flags; /**< @brief resource flags */
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struct resource *res; /**< @brief the real resource when allocated */
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rman_res_t start; /**< @brief start of resource range */
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rman_res_t end; /**< @brief end of resource range */
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rman_res_t count; /**< @brief count within range */
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};
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STAILQ_HEAD(resource_list, resource_list_entry);
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#define RLE_RESERVED 0x0001 /* Reserved by the parent bus. */
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#define RLE_ALLOCATED 0x0002 /* Reserved resource is allocated. */
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#define RLE_PREFETCH 0x0004 /* Resource is a prefetch range. */
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void resource_list_init(struct resource_list *rl);
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void resource_list_free(struct resource_list *rl);
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struct resource_list_entry *
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resource_list_add(struct resource_list *rl,
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int type, int rid,
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rman_res_t start, rman_res_t end, rman_res_t count);
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int resource_list_add_next(struct resource_list *rl,
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int type,
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rman_res_t start, rman_res_t end, rman_res_t count);
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int resource_list_busy(struct resource_list *rl,
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int type, int rid);
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int resource_list_reserved(struct resource_list *rl, int type, int rid);
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struct resource_list_entry*
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resource_list_find(struct resource_list *rl,
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int type, int rid);
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void resource_list_delete(struct resource_list *rl,
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int type, int rid);
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struct resource *
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resource_list_alloc(struct resource_list *rl,
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device_t bus, device_t child,
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int type, int *rid,
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rman_res_t start, rman_res_t end,
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rman_res_t count, u_int flags);
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int resource_list_release(struct resource_list *rl,
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device_t bus, device_t child,
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int type, int rid, struct resource *res);
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int resource_list_release_active(struct resource_list *rl,
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device_t bus, device_t child,
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int type);
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struct resource *
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resource_list_reserve(struct resource_list *rl,
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device_t bus, device_t child,
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int type, int *rid,
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rman_res_t start, rman_res_t end,
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rman_res_t count, u_int flags);
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int resource_list_unreserve(struct resource_list *rl,
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device_t bus, device_t child,
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int type, int rid);
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void resource_list_purge(struct resource_list *rl);
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int resource_list_print_type(struct resource_list *rl,
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const char *name, int type,
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const char *format);
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/*
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* The root bus, to which all top-level buses are attached.
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*/
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extern device_t root_bus;
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extern devclass_t root_devclass;
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void root_bus_configure(void);
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/*
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* Useful functions for implementing buses.
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*/
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struct _cpuset;
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int bus_generic_activate_resource(device_t dev, device_t child, int type,
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int rid, struct resource *r);
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device_t
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bus_generic_add_child(device_t dev, u_int order, const char *name,
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int unit);
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int bus_generic_adjust_resource(device_t bus, device_t child, int type,
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struct resource *r, rman_res_t start,
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rman_res_t end);
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struct resource *
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bus_generic_alloc_resource(device_t bus, device_t child, int type,
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int *rid, rman_res_t start, rman_res_t end,
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rman_res_t count, u_int flags);
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int bus_generic_translate_resource(device_t dev, int type, rman_res_t start,
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rman_res_t *newstart);
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int bus_generic_attach(device_t dev);
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int bus_generic_bind_intr(device_t dev, device_t child,
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struct resource *irq, int cpu);
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int bus_generic_child_location(device_t dev, device_t child, struct sbuf *sb);
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int bus_generic_child_pnpinfo(device_t dev, device_t child, struct sbuf *sb);
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int bus_generic_child_present(device_t dev, device_t child);
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int bus_generic_config_intr(device_t, int, enum intr_trigger,
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enum intr_polarity);
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int bus_generic_describe_intr(device_t dev, device_t child,
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struct resource *irq, void *cookie,
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const char *descr);
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int bus_generic_deactivate_resource(device_t dev, device_t child, int type,
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int rid, struct resource *r);
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int bus_generic_detach(device_t dev);
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void bus_generic_driver_added(device_t dev, driver_t *driver);
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int bus_generic_get_cpus(device_t dev, device_t child, enum cpu_sets op,
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size_t setsize, struct _cpuset *cpuset);
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bus_dma_tag_t
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bus_generic_get_dma_tag(device_t dev, device_t child);
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bus_space_tag_t
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bus_generic_get_bus_tag(device_t dev, device_t child);
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int bus_generic_get_domain(device_t dev, device_t child, int *domain);
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struct resource_list *
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bus_generic_get_resource_list(device_t, device_t);
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int bus_generic_map_resource(device_t dev, device_t child, int type,
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struct resource *r,
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struct resource_map_request *args,
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struct resource_map *map);
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void bus_generic_new_pass(device_t dev);
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int bus_print_child_header(device_t dev, device_t child);
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int bus_print_child_domain(device_t dev, device_t child);
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int bus_print_child_footer(device_t dev, device_t child);
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int bus_generic_print_child(device_t dev, device_t child);
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int bus_generic_probe(device_t dev);
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int bus_generic_read_ivar(device_t dev, device_t child, int which,
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uintptr_t *result);
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int bus_generic_release_resource(device_t bus, device_t child,
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int type, int rid, struct resource *r);
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int bus_generic_resume(device_t dev);
|
|
int bus_generic_resume_child(device_t dev, device_t child);
|
|
int bus_generic_setup_intr(device_t dev, device_t child,
|
|
struct resource *irq, int flags,
|
|
driver_filter_t *filter, driver_intr_t *intr,
|
|
void *arg, void **cookiep);
|
|
|
|
struct resource *
|
|
bus_generic_rl_alloc_resource (device_t, device_t, int, int *,
|
|
rman_res_t, rman_res_t, rman_res_t, u_int);
|
|
void bus_generic_rl_delete_resource (device_t, device_t, int, int);
|
|
int bus_generic_rl_get_resource (device_t, device_t, int, int, rman_res_t *,
|
|
rman_res_t *);
|
|
int bus_generic_rl_set_resource (device_t, device_t, int, int, rman_res_t,
|
|
rman_res_t);
|
|
int bus_generic_rl_release_resource (device_t, device_t, int, int,
|
|
struct resource *);
|
|
|
|
int bus_generic_shutdown(device_t dev);
|
|
int bus_generic_suspend(device_t dev);
|
|
int bus_generic_suspend_child(device_t dev, device_t child);
|
|
int bus_generic_teardown_intr(device_t dev, device_t child,
|
|
struct resource *irq, void *cookie);
|
|
int bus_generic_suspend_intr(device_t dev, device_t child,
|
|
struct resource *irq);
|
|
int bus_generic_resume_intr(device_t dev, device_t child,
|
|
struct resource *irq);
|
|
int bus_generic_unmap_resource(device_t dev, device_t child, int type,
|
|
struct resource *r,
|
|
struct resource_map *map);
|
|
int bus_generic_write_ivar(device_t dev, device_t child, int which,
|
|
uintptr_t value);
|
|
int bus_helper_reset_post(device_t dev, int flags);
|
|
int bus_helper_reset_prepare(device_t dev, int flags);
|
|
int bus_null_rescan(device_t dev);
|
|
|
|
/*
|
|
* Wrapper functions for the BUS_*_RESOURCE methods to make client code
|
|
* a little simpler.
|
|
*/
|
|
|
|
struct resource_spec {
|
|
int type;
|
|
int rid;
|
|
int flags;
|
|
};
|
|
#define RESOURCE_SPEC_END {-1, 0, 0}
|
|
|
|
int bus_alloc_resources(device_t dev, struct resource_spec *rs,
|
|
struct resource **res);
|
|
void bus_release_resources(device_t dev, const struct resource_spec *rs,
|
|
struct resource **res);
|
|
|
|
int bus_adjust_resource(device_t child, int type, struct resource *r,
|
|
rman_res_t start, rman_res_t end);
|
|
struct resource *bus_alloc_resource(device_t dev, int type, int *rid,
|
|
rman_res_t start, rman_res_t end,
|
|
rman_res_t count, u_int flags);
|
|
int bus_activate_resource(device_t dev, int type, int rid,
|
|
struct resource *r);
|
|
int bus_deactivate_resource(device_t dev, int type, int rid,
|
|
struct resource *r);
|
|
int bus_map_resource(device_t dev, int type, struct resource *r,
|
|
struct resource_map_request *args,
|
|
struct resource_map *map);
|
|
int bus_unmap_resource(device_t dev, int type, struct resource *r,
|
|
struct resource_map *map);
|
|
int bus_get_cpus(device_t dev, enum cpu_sets op, size_t setsize,
|
|
struct _cpuset *cpuset);
|
|
bus_dma_tag_t bus_get_dma_tag(device_t dev);
|
|
bus_space_tag_t bus_get_bus_tag(device_t dev);
|
|
int bus_get_domain(device_t dev, int *domain);
|
|
int bus_release_resource(device_t dev, int type, int rid,
|
|
struct resource *r);
|
|
int bus_free_resource(device_t dev, int type, struct resource *r);
|
|
int bus_setup_intr(device_t dev, struct resource *r, int flags,
|
|
driver_filter_t filter, driver_intr_t handler,
|
|
void *arg, void **cookiep);
|
|
int bus_teardown_intr(device_t dev, struct resource *r, void *cookie);
|
|
int bus_suspend_intr(device_t dev, struct resource *r);
|
|
int bus_resume_intr(device_t dev, struct resource *r);
|
|
int bus_bind_intr(device_t dev, struct resource *r, int cpu);
|
|
int bus_describe_intr(device_t dev, struct resource *irq, void *cookie,
|
|
const char *fmt, ...) __printflike(4, 5);
|
|
int bus_set_resource(device_t dev, int type, int rid,
|
|
rman_res_t start, rman_res_t count);
|
|
int bus_get_resource(device_t dev, int type, int rid,
|
|
rman_res_t *startp, rman_res_t *countp);
|
|
rman_res_t bus_get_resource_start(device_t dev, int type, int rid);
|
|
rman_res_t bus_get_resource_count(device_t dev, int type, int rid);
|
|
void bus_delete_resource(device_t dev, int type, int rid);
|
|
int bus_child_present(device_t child);
|
|
int bus_child_pnpinfo(device_t child, struct sbuf *sb);
|
|
int bus_child_location(device_t child, struct sbuf *sb);
|
|
void bus_enumerate_hinted_children(device_t bus);
|
|
int bus_delayed_attach_children(device_t bus);
|
|
|
|
static __inline struct resource *
|
|
bus_alloc_resource_any(device_t dev, int type, int *rid, u_int flags)
|
|
{
|
|
return (bus_alloc_resource(dev, type, rid, 0, ~0, 1, flags));
|
|
}
|
|
|
|
static __inline struct resource *
|
|
bus_alloc_resource_anywhere(device_t dev, int type, int *rid,
|
|
rman_res_t count, u_int flags)
|
|
{
|
|
return (bus_alloc_resource(dev, type, rid, 0, ~0, count, flags));
|
|
}
|
|
|
|
/*
|
|
* Access functions for device.
|
|
*/
|
|
device_t device_add_child(device_t dev, const char *name, int unit);
|
|
device_t device_add_child_ordered(device_t dev, u_int order,
|
|
const char *name, int unit);
|
|
void device_busy(device_t dev);
|
|
int device_delete_child(device_t dev, device_t child);
|
|
int device_delete_children(device_t dev);
|
|
int device_attach(device_t dev);
|
|
int device_detach(device_t dev);
|
|
void device_disable(device_t dev);
|
|
void device_enable(device_t dev);
|
|
device_t device_find_child(device_t dev, const char *classname,
|
|
int unit);
|
|
const char *device_get_desc(device_t dev);
|
|
devclass_t device_get_devclass(device_t dev);
|
|
driver_t *device_get_driver(device_t dev);
|
|
u_int32_t device_get_flags(device_t dev);
|
|
device_t device_get_parent(device_t dev);
|
|
int device_get_children(device_t dev, device_t **listp, int *countp);
|
|
void *device_get_ivars(device_t dev);
|
|
void device_set_ivars(device_t dev, void *ivars);
|
|
const char *device_get_name(device_t dev);
|
|
const char *device_get_nameunit(device_t dev);
|
|
void *device_get_softc(device_t dev);
|
|
device_state_t device_get_state(device_t dev);
|
|
int device_get_unit(device_t dev);
|
|
struct sysctl_ctx_list *device_get_sysctl_ctx(device_t dev);
|
|
struct sysctl_oid *device_get_sysctl_tree(device_t dev);
|
|
int device_has_quiet_children(device_t dev);
|
|
int device_is_alive(device_t dev); /* did probe succeed? */
|
|
int device_is_attached(device_t dev); /* did attach succeed? */
|
|
int device_is_enabled(device_t dev);
|
|
int device_is_suspended(device_t dev);
|
|
int device_is_quiet(device_t dev);
|
|
device_t device_lookup_by_name(const char *name);
|
|
int device_print_prettyname(device_t dev);
|
|
int device_printf(device_t dev, const char *, ...) __printflike(2, 3);
|
|
int device_log(device_t dev, int pri, const char *, ...) __printflike(3, 4);
|
|
int device_probe(device_t dev);
|
|
int device_probe_and_attach(device_t dev);
|
|
int device_probe_child(device_t bus, device_t dev);
|
|
int device_quiesce(device_t dev);
|
|
void device_quiet(device_t dev);
|
|
void device_quiet_children(device_t dev);
|
|
void device_set_desc(device_t dev, const char* desc);
|
|
void device_set_desc_copy(device_t dev, const char* desc);
|
|
int device_set_devclass(device_t dev, const char *classname);
|
|
int device_set_devclass_fixed(device_t dev, const char *classname);
|
|
bool device_is_devclass_fixed(device_t dev);
|
|
int device_set_driver(device_t dev, driver_t *driver);
|
|
void device_set_flags(device_t dev, u_int32_t flags);
|
|
void device_set_softc(device_t dev, void *softc);
|
|
void device_free_softc(void *softc);
|
|
void device_claim_softc(device_t dev);
|
|
int device_set_unit(device_t dev, int unit); /* XXX DONT USE XXX */
|
|
int device_shutdown(device_t dev);
|
|
void device_unbusy(device_t dev);
|
|
void device_verbose(device_t dev);
|
|
ssize_t device_get_property(device_t dev, const char *prop, void *val, size_t sz);
|
|
bool device_has_property(device_t dev, const char *prop);
|
|
|
|
/*
|
|
* Access functions for devclass.
|
|
*/
|
|
int devclass_add_driver(devclass_t dc, driver_t *driver,
|
|
int pass, devclass_t *dcp);
|
|
devclass_t devclass_create(const char *classname);
|
|
int devclass_delete_driver(devclass_t busclass, driver_t *driver);
|
|
devclass_t devclass_find(const char *classname);
|
|
const char *devclass_get_name(devclass_t dc);
|
|
device_t devclass_get_device(devclass_t dc, int unit);
|
|
void *devclass_get_softc(devclass_t dc, int unit);
|
|
int devclass_get_devices(devclass_t dc, device_t **listp, int *countp);
|
|
int devclass_get_drivers(devclass_t dc, driver_t ***listp, int *countp);
|
|
int devclass_get_count(devclass_t dc);
|
|
int devclass_get_maxunit(devclass_t dc);
|
|
int devclass_find_free_unit(devclass_t dc, int unit);
|
|
void devclass_set_parent(devclass_t dc, devclass_t pdc);
|
|
devclass_t devclass_get_parent(devclass_t dc);
|
|
struct sysctl_ctx_list *devclass_get_sysctl_ctx(devclass_t dc);
|
|
struct sysctl_oid *devclass_get_sysctl_tree(devclass_t dc);
|
|
|
|
/*
|
|
* Access functions for device resources.
|
|
*/
|
|
int resource_int_value(const char *name, int unit, const char *resname,
|
|
int *result);
|
|
int resource_long_value(const char *name, int unit, const char *resname,
|
|
long *result);
|
|
int resource_string_value(const char *name, int unit, const char *resname,
|
|
const char **result);
|
|
int resource_disabled(const char *name, int unit);
|
|
int resource_find_match(int *anchor, const char **name, int *unit,
|
|
const char *resname, const char *value);
|
|
int resource_find_dev(int *anchor, const char *name, int *unit,
|
|
const char *resname, const char *value);
|
|
int resource_unset_value(const char *name, int unit, const char *resname);
|
|
|
|
/*
|
|
* Functions for maintaining and checking consistency of
|
|
* bus information exported to userspace.
|
|
*/
|
|
int bus_data_generation_check(int generation);
|
|
void bus_data_generation_update(void);
|
|
|
|
/**
|
|
* Some convenience defines for probe routines to return. These are just
|
|
* suggested values, and there's nothing magical about them.
|
|
* BUS_PROBE_SPECIFIC is for devices that cannot be reprobed, and that no
|
|
* possible other driver may exist (typically legacy drivers who don't follow
|
|
* all the rules, or special needs drivers). BUS_PROBE_VENDOR is the
|
|
* suggested value that vendor supplied drivers use. This is for source or
|
|
* binary drivers that are not yet integrated into the FreeBSD tree. Its use
|
|
* in the base OS is prohibited. BUS_PROBE_DEFAULT is the normal return value
|
|
* for drivers to use. It is intended that nearly all of the drivers in the
|
|
* tree should return this value. BUS_PROBE_LOW_PRIORITY are for drivers that
|
|
* have special requirements like when there are two drivers that support
|
|
* overlapping series of hardware devices. In this case the one that supports
|
|
* the older part of the line would return this value, while the one that
|
|
* supports the newer ones would return BUS_PROBE_DEFAULT. BUS_PROBE_GENERIC
|
|
* is for drivers that wish to have a generic form and a specialized form,
|
|
* like is done with the pci bus and the acpi pci bus. BUS_PROBE_HOOVER is
|
|
* for those buses that implement a generic device placeholder for devices on
|
|
* the bus that have no more specific driver for them (aka ugen).
|
|
* BUS_PROBE_NOWILDCARD or lower means that the device isn't really bidding
|
|
* for a device node, but accepts only devices that its parent has told it
|
|
* use this driver.
|
|
*/
|
|
#define BUS_PROBE_SPECIFIC 0 /* Only I can use this device */
|
|
#define BUS_PROBE_VENDOR (-10) /* Vendor supplied driver */
|
|
#define BUS_PROBE_DEFAULT (-20) /* Base OS default driver */
|
|
#define BUS_PROBE_LOW_PRIORITY (-40) /* Older, less desirable drivers */
|
|
#define BUS_PROBE_GENERIC (-100) /* generic driver for dev */
|
|
#define BUS_PROBE_HOOVER (-1000000) /* Driver for any dev on bus */
|
|
#define BUS_PROBE_NOWILDCARD (-2000000000) /* No wildcard device matches */
|
|
|
|
/**
|
|
* During boot, the device tree is scanned multiple times. Each scan,
|
|
* or pass, drivers may be attached to devices. Each driver
|
|
* attachment is assigned a pass number. Drivers may only probe and
|
|
* attach to devices if their pass number is less than or equal to the
|
|
* current system-wide pass number. The default pass is the last pass
|
|
* and is used by most drivers. Drivers needed by the scheduler are
|
|
* probed in earlier passes.
|
|
*/
|
|
#define BUS_PASS_ROOT 0 /* Used to attach root0. */
|
|
#define BUS_PASS_BUS 10 /* Buses and bridges. */
|
|
#define BUS_PASS_CPU 20 /* CPU devices. */
|
|
#define BUS_PASS_RESOURCE 30 /* Resource discovery. */
|
|
#define BUS_PASS_INTERRUPT 40 /* Interrupt controllers. */
|
|
#define BUS_PASS_TIMER 50 /* Timers and clocks. */
|
|
#define BUS_PASS_SCHEDULER 60 /* Start scheduler. */
|
|
#define BUS_PASS_SUPPORTDEV 100000 /* Drivers which support DEFAULT drivers. */
|
|
#define BUS_PASS_DEFAULT __INT_MAX /* Everything else. */
|
|
|
|
#define BUS_PASS_ORDER_FIRST 0
|
|
#define BUS_PASS_ORDER_EARLY 2
|
|
#define BUS_PASS_ORDER_MIDDLE 5
|
|
#define BUS_PASS_ORDER_LATE 7
|
|
#define BUS_PASS_ORDER_LAST 9
|
|
|
|
extern int bus_current_pass;
|
|
|
|
void bus_set_pass(int pass);
|
|
|
|
/**
|
|
* Shorthands for constructing method tables.
|
|
*/
|
|
#define DEVMETHOD KOBJMETHOD
|
|
#define DEVMETHOD_END KOBJMETHOD_END
|
|
|
|
/*
|
|
* Some common device interfaces.
|
|
*/
|
|
#include "device_if.h"
|
|
#include "bus_if.h"
|
|
|
|
struct module;
|
|
|
|
int driver_module_handler(struct module *, int, void *);
|
|
|
|
/**
|
|
* Module support for automatically adding drivers to buses.
|
|
*/
|
|
struct driver_module_data {
|
|
int (*dmd_chainevh)(struct module *, int, void *);
|
|
void *dmd_chainarg;
|
|
const char *dmd_busname;
|
|
kobj_class_t dmd_driver;
|
|
devclass_t *dmd_devclass;
|
|
int dmd_pass;
|
|
};
|
|
|
|
#define EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass, \
|
|
evh, arg, order, pass) \
|
|
\
|
|
static struct driver_module_data name##_##busname##_driver_mod = { \
|
|
evh, arg, \
|
|
#busname, \
|
|
(kobj_class_t) &driver, \
|
|
&devclass, \
|
|
pass \
|
|
}; \
|
|
\
|
|
static moduledata_t name##_##busname##_mod = { \
|
|
#busname "/" #name, \
|
|
driver_module_handler, \
|
|
&name##_##busname##_driver_mod \
|
|
}; \
|
|
DECLARE_MODULE(name##_##busname, name##_##busname##_mod, \
|
|
SI_SUB_DRIVERS, order)
|
|
|
|
#define EARLY_DRIVER_MODULE(name, busname, driver, devclass, evh, arg, pass) \
|
|
EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass, \
|
|
evh, arg, SI_ORDER_MIDDLE, pass)
|
|
|
|
#define DRIVER_MODULE_ORDERED(name, busname, driver, devclass, evh, arg,\
|
|
order) \
|
|
EARLY_DRIVER_MODULE_ORDERED(name, busname, driver, devclass, \
|
|
evh, arg, order, BUS_PASS_DEFAULT)
|
|
|
|
#define DRIVER_MODULE(name, busname, driver, devclass, evh, arg) \
|
|
EARLY_DRIVER_MODULE(name, busname, driver, devclass, evh, arg, \
|
|
BUS_PASS_DEFAULT)
|
|
|
|
/**
|
|
* Generic ivar accessor generation macros for bus drivers
|
|
*/
|
|
#define __BUS_ACCESSOR(varp, var, ivarp, ivar, type) \
|
|
\
|
|
static __inline type varp ## _get_ ## var(device_t dev) \
|
|
{ \
|
|
uintptr_t v; \
|
|
int e __diagused; \
|
|
e = BUS_READ_IVAR(device_get_parent(dev), dev, \
|
|
ivarp ## _IVAR_ ## ivar, &v); \
|
|
KASSERT(e == 0, ("%s failed for %s on bus %s, error = %d", \
|
|
__func__, device_get_nameunit(dev), \
|
|
device_get_nameunit(device_get_parent(dev)), e)); \
|
|
return ((type) v); \
|
|
} \
|
|
\
|
|
static __inline void varp ## _set_ ## var(device_t dev, type t) \
|
|
{ \
|
|
uintptr_t v = (uintptr_t) t; \
|
|
int e __diagused; \
|
|
e = BUS_WRITE_IVAR(device_get_parent(dev), dev, \
|
|
ivarp ## _IVAR_ ## ivar, v); \
|
|
KASSERT(e == 0, ("%s failed for %s on bus %s, error = %d", \
|
|
__func__, device_get_nameunit(dev), \
|
|
device_get_nameunit(device_get_parent(dev)), e)); \
|
|
}
|
|
|
|
/**
|
|
* Shorthand macros, taking resource argument
|
|
* Generated with sys/tools/bus_macro.sh
|
|
*/
|
|
|
|
#define bus_barrier(r, o, l, f) \
|
|
bus_space_barrier((r)->r_bustag, (r)->r_bushandle, (o), (l), (f))
|
|
#define bus_poke_1(r, o, v) \
|
|
bus_space_poke_1((r)->r_bustag, (r)->r_bushandle, (o), (v))
|
|
#define bus_peek_1(r, o, vp) \
|
|
bus_space_peek_1((r)->r_bustag, (r)->r_bushandle, (o), (vp))
|
|
#define bus_read_1(r, o) \
|
|
bus_space_read_1((r)->r_bustag, (r)->r_bushandle, (o))
|
|
#define bus_read_multi_1(r, o, d, c) \
|
|
bus_space_read_multi_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
|
|
#define bus_read_region_1(r, o, d, c) \
|
|
bus_space_read_region_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
|
|
#define bus_set_multi_1(r, o, v, c) \
|
|
bus_space_set_multi_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
|
|
#define bus_set_region_1(r, o, v, c) \
|
|
bus_space_set_region_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
|
|
#define bus_write_1(r, o, v) \
|
|
bus_space_write_1((r)->r_bustag, (r)->r_bushandle, (o), (v))
|
|
#define bus_write_multi_1(r, o, d, c) \
|
|
bus_space_write_multi_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
|
|
#define bus_write_region_1(r, o, d, c) \
|
|
bus_space_write_region_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
|
|
#define bus_read_stream_1(r, o) \
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bus_space_read_stream_1((r)->r_bustag, (r)->r_bushandle, (o))
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#define bus_read_multi_stream_1(r, o, d, c) \
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bus_space_read_multi_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_region_stream_1(r, o, d, c) \
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bus_space_read_region_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_set_multi_stream_1(r, o, v, c) \
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bus_space_set_multi_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_set_region_stream_1(r, o, v, c) \
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bus_space_set_region_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_write_stream_1(r, o, v) \
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bus_space_write_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_write_multi_stream_1(r, o, d, c) \
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bus_space_write_multi_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_write_region_stream_1(r, o, d, c) \
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bus_space_write_region_stream_1((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_poke_2(r, o, v) \
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bus_space_poke_2((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_peek_2(r, o, vp) \
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bus_space_peek_2((r)->r_bustag, (r)->r_bushandle, (o), (vp))
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#define bus_read_2(r, o) \
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bus_space_read_2((r)->r_bustag, (r)->r_bushandle, (o))
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#define bus_read_multi_2(r, o, d, c) \
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bus_space_read_multi_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_region_2(r, o, d, c) \
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bus_space_read_region_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_set_multi_2(r, o, v, c) \
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bus_space_set_multi_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_set_region_2(r, o, v, c) \
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bus_space_set_region_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_write_2(r, o, v) \
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bus_space_write_2((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_write_multi_2(r, o, d, c) \
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bus_space_write_multi_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_write_region_2(r, o, d, c) \
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bus_space_write_region_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_stream_2(r, o) \
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bus_space_read_stream_2((r)->r_bustag, (r)->r_bushandle, (o))
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#define bus_read_multi_stream_2(r, o, d, c) \
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bus_space_read_multi_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_region_stream_2(r, o, d, c) \
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bus_space_read_region_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_set_multi_stream_2(r, o, v, c) \
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bus_space_set_multi_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_set_region_stream_2(r, o, v, c) \
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bus_space_set_region_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_write_stream_2(r, o, v) \
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bus_space_write_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_write_multi_stream_2(r, o, d, c) \
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bus_space_write_multi_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_write_region_stream_2(r, o, d, c) \
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bus_space_write_region_stream_2((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_poke_4(r, o, v) \
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bus_space_poke_4((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_peek_4(r, o, vp) \
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bus_space_peek_4((r)->r_bustag, (r)->r_bushandle, (o), (vp))
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#define bus_read_4(r, o) \
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bus_space_read_4((r)->r_bustag, (r)->r_bushandle, (o))
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#define bus_read_multi_4(r, o, d, c) \
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bus_space_read_multi_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_region_4(r, o, d, c) \
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bus_space_read_region_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_set_multi_4(r, o, v, c) \
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bus_space_set_multi_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_set_region_4(r, o, v, c) \
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bus_space_set_region_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_write_4(r, o, v) \
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bus_space_write_4((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_write_multi_4(r, o, d, c) \
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bus_space_write_multi_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_write_region_4(r, o, d, c) \
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bus_space_write_region_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_stream_4(r, o) \
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bus_space_read_stream_4((r)->r_bustag, (r)->r_bushandle, (o))
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#define bus_read_multi_stream_4(r, o, d, c) \
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bus_space_read_multi_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_region_stream_4(r, o, d, c) \
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bus_space_read_region_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_set_multi_stream_4(r, o, v, c) \
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bus_space_set_multi_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_set_region_stream_4(r, o, v, c) \
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bus_space_set_region_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_write_stream_4(r, o, v) \
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bus_space_write_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_write_multi_stream_4(r, o, d, c) \
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bus_space_write_multi_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_write_region_stream_4(r, o, d, c) \
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bus_space_write_region_stream_4((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_poke_8(r, o, v) \
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bus_space_poke_8((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_peek_8(r, o, vp) \
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bus_space_peek_8((r)->r_bustag, (r)->r_bushandle, (o), (vp))
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#define bus_read_8(r, o) \
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bus_space_read_8((r)->r_bustag, (r)->r_bushandle, (o))
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#define bus_read_multi_8(r, o, d, c) \
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bus_space_read_multi_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_region_8(r, o, d, c) \
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bus_space_read_region_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_set_multi_8(r, o, v, c) \
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bus_space_set_multi_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_set_region_8(r, o, v, c) \
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bus_space_set_region_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_write_8(r, o, v) \
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bus_space_write_8((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_write_multi_8(r, o, d, c) \
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bus_space_write_multi_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_write_region_8(r, o, d, c) \
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bus_space_write_region_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_stream_8(r, o) \
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bus_space_read_stream_8((r)->r_bustag, (r)->r_bushandle, (o))
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#define bus_read_multi_stream_8(r, o, d, c) \
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bus_space_read_multi_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_read_region_stream_8(r, o, d, c) \
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bus_space_read_region_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_set_multi_stream_8(r, o, v, c) \
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bus_space_set_multi_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_set_region_stream_8(r, o, v, c) \
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bus_space_set_region_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (v), (c))
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#define bus_write_stream_8(r, o, v) \
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bus_space_write_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (v))
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#define bus_write_multi_stream_8(r, o, d, c) \
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bus_space_write_multi_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#define bus_write_region_stream_8(r, o, d, c) \
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bus_space_write_region_stream_8((r)->r_bustag, (r)->r_bushandle, (o), (d), (c))
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#endif /* _KERNEL */
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#endif /* !_SYS_BUS_H_ */
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