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/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LINUXKPI_LINUX_MODULE_H_
#define _LINUXKPI_LINUX_MODULE_H_
#include <sys/types.h>
#include <sys/param.h>
#include <sys/module.h>
#include <sys/queue.h>
#include <sys/linker.h>
#include <linux/list.h>
#include <linux/compiler.h>
#include <linux/stringify.h>
#include <linux/kmod.h>
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <linux/export.h>
#define MODULE_AUTHOR(name)
#define MODULE_DESCRIPTION(name)
#define MODULE_LICENSE(name)
#define MODULE_INFO(tag, info)
#define MODULE_FIRMWARE(firmware)
#define MODULE_SUPPORTED_DEVICE(name)
#define MODULE_IMPORT_NS(_name)
/* Linux has an empty element at the end of the ID table -> nitems() - 1. */
#define MODULE_DEVICE_TABLE(_bus, _table) \
\
static device_method_t _ ## _bus ## _ ## _table ## _methods[] = { \
DEVMETHOD_END \
}; \
\
static driver_t _ ## _bus ## _ ## _table ## _driver = { \
"lkpi_" #_bus #_table, \
_ ## _bus ## _ ## _table ## _methods, \
0 \
}; \
\
DRIVER_MODULE(lkpi_ ## _table, _bus, _ ## _bus ## _ ## _table ## _driver,\
0, 0); \
\
MODULE_DEVICE_TABLE_BUS_ ## _bus(_bus, _table)
/*
* THIS_MODULE is used to differentiate modules on Linux. We currently
* completely stub out any Linux struct module usage, but THIS_MODULE is still
* used to populate the "owner" fields of various drivers. Even though we
* don't actually dereference these "owner" fields they are still used by
* drivers to check if devices/dmabufs/etc come from different modules. For
* example, during DRM GEM import some drivers check if the dmabuf's owner
* matches the dev's owner. If they match because they are both NULL drivers
* may incorrectly think two resources come from the same module.
*
* To handle this we specify an undefined symbol __this_linker_file, which
* will get special treatment from the linker when resolving. This will
* populate the usages of __this_linker_file with the linker_file_t of the
* module.
*/
#ifdef KLD_MODULE
#define THIS_MODULE ((struct module *)&__this_linker_file)
#else
#define THIS_MODULE ((struct module *)0)
#endif
#define __MODULE_STRING(x) __stringify(x)
/* OFED pre-module initialization */
#define SI_SUB_OFED_PREINIT (SI_SUB_ROOT_CONF - 2)
/* OFED default module initialization */
#define SI_SUB_OFED_MODINIT (SI_SUB_ROOT_CONF - 1)
#include <sys/linker.h>
static inline void
_module_run(void *arg)
{
void (*fn)(void);
#ifdef OFED_DEBUG_INIT
char name[1024];
caddr_t pc;
long offset;
pc = (caddr_t)arg;
if (linker_search_symbol_name(pc, name, sizeof(name), &offset) != 0)
printf("Running ??? (%p)\n", pc);
else
printf("Running %s (%p)\n", name, pc);
#endif
fn = arg;
fn();
}
#define module_init(fn) \
SYSINIT(fn, SI_SUB_OFED_MODINIT, SI_ORDER_FIRST, _module_run, (fn))
#define module_exit(fn) \
SYSUNINIT(fn, SI_SUB_OFED_MODINIT, SI_ORDER_SECOND, _module_run, (fn))
/*
* The following two macros are a workaround for not having a module
* load and unload order resolver:
*/
#define module_init_order(fn, order) \
SYSINIT(fn, SI_SUB_OFED_MODINIT, (order), _module_run, (fn))
#define module_exit_order(fn, order) \
SYSUNINIT(fn, SI_SUB_OFED_MODINIT, (order), _module_run, (fn))
static inline void module_get(struct module *module) {}
static inline void module_put(struct module *module) {}
static inline bool
try_module_get(struct module *module)
{
return (true);
}
#define postcore_initcall(fn) module_init(fn)
#endif /* _LINUXKPI_LINUX_MODULE_H_ */
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