freebsd-dev/sys/dev/mfi/mfi_linux.c
Doug Ambrisko 741367d5a5 Add in a bunch of things to the mfi driver:
- Linux ioctl support, with the other Linux changes MegaCli
	will run if you mount linprocfs & linsysfs then set
	sysctl compat.linux.osrelease=2.6.12 or similar.  This works
	on i386.  It should work on amd64 but not well tested yet.
	StoreLib may or may not work.  Remember to kldload mfi_linux.
      - Add in AEN (Async Event Notification) support so we can
	get messages from the firmware when something happens.
	Not all messages are in defined in event detail.  Use
	event_log to try to figure out what happened.
      - Try to implement something like SIGIO for StoreLib.  Since
	mrmonitor doesn't work right I can't fully test it.  StoreLib
	works best with the rh9 base.  In theory mrmonitor isn't
	needed due to native driver support of AEN :-)
Now we can configure and monitor the RAID better.

Submitted by:	IronPort Systems.
2006-05-18 23:30:48 +00:00

91 lines
3.2 KiB
C

/*-
* Copyright (c) 2006 IronPort Systems
* 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, 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/file.h>
#include <sys/proc.h>
#if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */
#include <machine/../linux32/linux.h>
#include <machine/../linux32/linux32_proto.h>
#else
#include <machine/../linux/linux.h>
#include <machine/../linux/linux_proto.h>
#endif
#include <compat/linux/linux_ioctl.h>
#include <compat/linux/linux_util.h>
/* There are multiple ioctl number ranges that need to be handled */
#define MFI_LINUX_IOCTL_MIN 0x4d00
#define MFI_LINUX_IOCTL_MAX 0x4d04
static linux_ioctl_function_t mfi_linux_ioctl;
static struct linux_ioctl_handler mfi_linux_handler = {mfi_linux_ioctl,
MFI_LINUX_IOCTL_MIN,
MFI_LINUX_IOCTL_MAX};
SYSINIT (mfi_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
linux_ioctl_register_handler, &mfi_linux_handler);
SYSUNINIT(mfi_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
linux_ioctl_unregister_handler, &mfi_linux_handler);
static struct linux_device_handler mfi_device_handler =
{ "mfi", "megaraid_sas", "mfi0", "megaraid_sas_ioctl_node", -1, 0, 1};
SYSINIT (mfi_register2, SI_SUB_KLD, SI_ORDER_MIDDLE,
linux_device_register_handler, &mfi_device_handler);
SYSUNINIT(mfi_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE,
linux_device_unregister_handler, &mfi_device_handler);
static int
mfi_linux_modevent(module_t mod, int cmd, void *data)
{
return (0);
}
DEV_MODULE(mfi_linux, mfi_linux_modevent, NULL);
MODULE_DEPEND(mfi, linux, 1, 1, 1);
static int
mfi_linux_ioctl(d_thread_t *p, struct linux_ioctl_args *args)
{
struct file *fp;
int error;
if ((error = fget(p, args->fd, &fp)) != 0)
return (error);
error = fo_ioctl(fp, args->cmd, (caddr_t)args->arg, p->td_ucred, p);
fdrop(fp, p);
return (error);
}