Delete the "blackhole" driver - it is not needed anymore.
The "blackhole" driver was used in conjunction with bhyve to sequester pci devices intended for passthru until vmm.ko was loaded. This was useful at one point because vmm.ko could not be loaded at boot time. The same functionality can now be achieved by loading vmm.ko via the loader along with the kernel. Discussed with: grehan Obtained from: NetApp
This commit is contained in:
Neel Natu
parent
605e5bbc41
commit
8caac1d5ba
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=246193
@ -1,129 +0,0 @@
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/*-
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* Copyright (c) 2011 NetApp, Inc.
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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 NETAPP, INC ``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 NETAPP, INC 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/linker.h>
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#include <sys/libkern.h>
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#include <dev/pci/pcivar.h>
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static int
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linker_file_iterator(linker_file_t lf, void *arg)
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{
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const char *file = arg;
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if (strcmp(lf->filename, file) == 0)
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return (1);
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else
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return (0);
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}
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static boolean_t
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pptdev(int bus, int slot, int func)
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{
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int found, b, s, f, n;
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char *val, *cp, *cp2;
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/*
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* setenv pptdevs "1/2/3 4/5/6 7/8/9 10/11/12"
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*/
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found = 0;
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cp = val = getenv("pptdevs");
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while (cp != NULL && *cp != '\0') {
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if ((cp2 = strchr(cp, ' ')) != NULL)
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*cp2 = '\0';
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n = sscanf(cp, "%d/%d/%d", &b, &s, &f);
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if (n == 3 && bus == b && slot == s && func == f) {
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found = 1;
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break;
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}
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if (cp2 != NULL)
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*cp2++ = ' ';
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cp = cp2;
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}
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freeenv(val);
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return (found);
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}
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static int
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pci_blackhole_probe(device_t dev)
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{
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int bus, slot, func;
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/*
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* If 'vmm.ko' has also been loaded the don't try to claim
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* any pci devices.
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*/
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if (linker_file_foreach(linker_file_iterator, "vmm.ko"))
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return (ENXIO);
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bus = pci_get_bus(dev);
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slot = pci_get_slot(dev);
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func = pci_get_function(dev);
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if (pptdev(bus, slot, func))
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return (0);
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else
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return (ENXIO);
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}
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static int
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pci_blackhole_attach(device_t dev)
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{
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/*
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* We never really want to claim the devices but just want to prevent
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* other drivers from getting to them.
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*/
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return (ENXIO);
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}
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static device_method_t pci_blackhole_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, pci_blackhole_probe),
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DEVMETHOD(device_attach, pci_blackhole_attach),
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{ 0, 0 }
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};
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static driver_t pci_blackhole_driver = {
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"blackhole",
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pci_blackhole_methods,
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};
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devclass_t blackhole_devclass;
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DRIVER_MODULE(blackhole, pci, pci_blackhole_driver, blackhole_devclass, 0, 0);
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MODULE_DEPEND(blackhole, pci, 1, 1, 1);
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@ -48,7 +48,6 @@ SUBDIR= \
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${_bxe} \
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${_bios} \
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${_bktr} \
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${_blackhole} \
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${_bm} \
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bridgestp \
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bwi \
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@ -626,7 +625,6 @@ _amdtemp= amdtemp
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_arcmsr= arcmsr
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_asmc= asmc
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_bktr= bktr
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_blackhole= blackhole
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_bxe= bxe
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_cardbus= cardbus
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_cbb= cbb
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@ -1,9 +0,0 @@
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# $FreeBSD$
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.PATH: ${.CURDIR}/../../dev/blackhole
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KMOD= blackhole
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SRCS= blackhole.c
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SRCS+= bus_if.h device_if.h pci_if.h
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.include <bsd.kmod.mk>
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