diff options
Diffstat (limited to 'sys/dev/mrsas/mrsas_linux.c')
| -rw-r--r-- | sys/dev/mrsas/mrsas_linux.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/sys/dev/mrsas/mrsas_linux.c b/sys/dev/mrsas/mrsas_linux.c new file mode 100644 index 0000000..8a3db0b --- /dev/null +++ b/sys/dev/mrsas/mrsas_linux.c @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2014, LSI Corp. All rights reserved. Author: Kashyap Desai, + * Sibananda Sahu Support: freebsdraid@lsi.com + * + * 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. 3. Neither the name of the + * <ORGANIZATION> nor the names of its contributors may be used to endorse or + * promote products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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. + * + * The views and conclusions contained in the software and documentation are + * those of the authors and should not be interpreted as representing + * official policies,either expressed or implied, of the FreeBSD Project. + * + * Send feedback to: <megaraidfbsd@lsi.com> Mail to: LSI Corporation, 1621 + * Barber Lane, Milpitas, CA 95035 ATTN: MegaRaid FreeBSD + * + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> + +#if (__FreeBSD_version > 900000) +#include <sys/capability.h> +#endif + +#include <sys/conf.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/file.h> +#include <sys/proc.h> +#include <machine/bus.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> + +#include <dev/mrsas/mrsas.h> +#include <dev/mrsas/mrsas_ioctl.h> + +/* There are multiple ioctl number ranges that need to be handled */ +#define MRSAS_LINUX_IOCTL_MIN 0x4d00 +#define MRSAS_LINUX_IOCTL_MAX 0x4d01 + +static linux_ioctl_function_t mrsas_linux_ioctl; +static struct linux_ioctl_handler mrsas_linux_handler = {mrsas_linux_ioctl, + MRSAS_LINUX_IOCTL_MIN, +MRSAS_LINUX_IOCTL_MAX}; + +SYSINIT(mrsas_register, SI_SUB_KLD, SI_ORDER_MIDDLE, + linux_ioctl_register_handler, &mrsas_linux_handler); +SYSUNINIT(mrsas_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, + linux_ioctl_unregister_handler, &mrsas_linux_handler); + +static struct linux_device_handler mrsas_device_handler = +{"mrsas", "megaraid_sas", "mrsas0", "megaraid_sas_ioctl_node", -1, 0, 1}; + +SYSINIT(mrsas_register2, SI_SUB_KLD, SI_ORDER_MIDDLE, + linux_device_register_handler, &mrsas_device_handler); +SYSUNINIT(mrsas_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE, + linux_device_unregister_handler, &mrsas_device_handler); + +static int +mrsas_linux_modevent(module_t mod __unused, int cmd __unused, void *data __unused) +{ + return (0); +} + +/* + * mrsas_linux_ioctl: linux emulator IOCtl commands entry point. + * + * This function is the entry point for IOCtls from linux binaries. + * It calls the mrsas_ioctl function for processing + * depending on the IOCTL command received. + */ +static int +mrsas_linux_ioctl(struct thread *p, struct linux_ioctl_args *args) +{ +#if (__FreeBSD_version >= 1000000) + cap_rights_t rights; + +#endif + struct file *fp; + int error; + u_long cmd = args->cmd; + + if (cmd != MRSAS_LINUX_CMD32) { + error = ENOTSUP; + goto END; + } +#if (__FreeBSD_version >= 1000000) + error = fget(p, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp); +#elif (__FreeBSD_version <= 900000) + error = fget(p, args->fd, &fp); +#else /* For FreeBSD version greater than + * 9.0.0 but less than 10.0.0 */ + error = fget(p, args->fd, CAP_IOCTL, &fp); +#endif + if (error != 0) + goto END; + + error = fo_ioctl(fp, cmd, (caddr_t)args->arg, p->td_ucred, p); + fdrop(fp, p); +END: + return (error); +} + +DEV_MODULE(mrsas_linux, mrsas_linux_modevent, NULL); +MODULE_DEPEND(mrsas, linux, 1, 1, 1); |
