096734a154
Specifically, add support for "Drake Skinny" and "ThunderBolt" LSI cards. Initial code was supplied by LSI under BSD license. Several improvements were done by myself. Such things like making it work in a static kernel, be able to boot of the RAID, performance improvements. I removed some fairly complicated code that seemed to directly access the disks under the firmware. It doesn't seem to be needed and significantly slowed down the performance of the driver and caused tons of sense errors to be reported. This code is being checked in this area so others can help me get it into shape to commit into the FreeBSD tree. Assistance has been volunteered by iXsystems. We might want to re-work the JBOD attachment that creates /dev/mfisyspd? node for each disk. Performance is faster then prior cards. It works okay with WITNESS and INVARIANTS on amd64 and i386. I recall seeing a use after free time bug with FreeBSD 8 and a Drake Skinny card with WITNESS and INVARIANTS on. First task is get all of the new structures to be named in FreeBSD style format. Next is probably to deal with the 64bit addressing changes that are mostly around the #ifdef __amd64__ checks. Thanks to LSI for providing the initial code. Obtained from: LSI
106 lines
3.4 KiB
C
106 lines
3.4 KiB
C
/*-
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* Copyright (c) 2006 IronPort Systems
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/capability.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/file.h>
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#include <sys/proc.h>
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#include <machine/bus.h>
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#if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */
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#include <machine/../linux32/linux.h>
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#include <machine/../linux32/linux32_proto.h>
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#else
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#include <machine/../linux/linux.h>
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#include <machine/../linux/linux_proto.h>
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#endif
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#include <compat/linux/linux_ioctl.h>
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#include <compat/linux/linux_util.h>
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#include <dev/mfi/mfireg.h>
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#include <dev/mfi/mfi_ioctl.h>
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/* There are multiple ioctl number ranges that need to be handled */
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#define MFI_LINUX_IOCTL_MIN 0x4d00
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#define MFI_LINUX_IOCTL_MAX 0x4d04
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static linux_ioctl_function_t mfi_linux_ioctl;
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static struct linux_ioctl_handler mfi_linux_handler = {mfi_linux_ioctl,
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MFI_LINUX_IOCTL_MIN,
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MFI_LINUX_IOCTL_MAX};
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SYSINIT (mfi_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
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linux_ioctl_register_handler, &mfi_linux_handler);
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SYSUNINIT(mfi_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
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linux_ioctl_unregister_handler, &mfi_linux_handler);
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static struct linux_device_handler mfi_device_handler =
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{ "mfi", "megaraid_sas", "mfi0", "megaraid_sas_ioctl_node", -1, 0, 1};
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SYSINIT (mfi_register2, SI_SUB_KLD, SI_ORDER_MIDDLE,
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linux_device_register_handler, &mfi_device_handler);
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SYSUNINIT(mfi_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE,
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linux_device_unregister_handler, &mfi_device_handler);
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static int
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mfi_linux_modevent(module_t mod, int cmd, void *data)
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{
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return (0);
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}
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DEV_MODULE(mfi_linux, mfi_linux_modevent, NULL);
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MODULE_DEPEND(mfi, linux, 1, 1, 1);
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static int
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mfi_linux_ioctl(struct thread *p, struct linux_ioctl_args *args)
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{
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struct file *fp;
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int error;
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u_long cmd = args->cmd;
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switch (cmd) {
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case MFI_LINUX_CMD:
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cmd = MFI_LINUX_CMD_2;
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break;
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case MFI_LINUX_SET_AEN:
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cmd = MFI_LINUX_SET_AEN_2;
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break;
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}
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if ((error = fget(p, args->fd, CAP_IOCTL, &fp)) != 0)
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return (error);
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error = fo_ioctl(fp, cmd, (caddr_t)args->arg, p->td_ucred, p);
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fdrop(fp, p);
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return (error);
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}
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