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https://github.com/opnsense/src.git
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Import driver source from hyperv-20130627 vendor branch.
This commit is contained in:
Peter Grehan
commit
a83f66c9c9
3 changed files with 209 additions and 7 deletions
194
sys/contrib/dev/hyperv/stordisengage/hv_ata_pci_disengage.c
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194
sys/contrib/dev/hyperv/stordisengage/hv_ata_pci_disengage.c
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@ -0,0 +1,194 @@
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/*-
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* Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
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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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* without modification, immediately at the beginning of the file.
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 2009-2013 Microsoft Corp.
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* Copyright (c) 2012 NetApp Inc.
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* Copyright (c) 2012 Citrix 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 unmodified, this list of conditions, and the following
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* 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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/kernel.h>
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#include <sys/module.h>
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#include <sys/ata.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/malloc.h>
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#include <sys/sema.h>
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#include <sys/taskqueue.h>
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#include <vm/uma.h>
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#include <machine/stdarg.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/ata/ata-all.h>
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#include <dev/ata/ata-pci.h>
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#include <ata_if.h>
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#define HV_X64_MSR_GUEST_OS_ID 0x40000000
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#define HV_X64_CPUID_MIN 0x40000005
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#define HV_X64_CPUID_MAX 0x4000ffff
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/* prototypes */
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static int hv_ata_pci_probe(device_t dev);
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static int hv_ata_pci_attach(device_t dev);
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static int hv_ata_pci_detach(device_t dev);
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static int hv_check_for_hyper_v(void);
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/*
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* generic PCI ATA device probe
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*/
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static int
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hv_ata_pci_probe(device_t dev)
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{
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int ata_disk_enable = 0;
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if(bootverbose)
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device_printf(dev,
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"hv_ata_pci_probe dev_class/subslcass = %d, %d\n",
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pci_get_class(dev), pci_get_subclass(dev));
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/* is this a storage class device ? */
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if (pci_get_class(dev) != PCIC_STORAGE)
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return (ENXIO);
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/* is this an IDE/ATA type device ? */
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if (pci_get_subclass(dev) != PCIS_STORAGE_IDE)
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return (ENXIO);
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if(bootverbose)
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device_printf(dev,
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"Hyper-V probe for disabling ATA-PCI, emulated driver\n");
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/*
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* On Hyper-V the default is to use the enlightened driver for
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* IDE disks. However, if the user wishes to use the native
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* ATA driver, the environment variable
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* hw_ata.disk_enable must be explicitly set to 1.
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*/
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if (hv_check_for_hyper_v()) {
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if (getenv_int("hw.ata.disk_enable", &ata_disk_enable)) {
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if(bootverbose)
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device_printf(dev,
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"hw.ata.disk_enable flag is disabling Hyper-V"
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" ATA driver support\n");
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return (ENXIO);
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}
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}
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if(bootverbose)
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device_printf(dev, "Hyper-V ATA storage driver enabled.\n");
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return (BUS_PROBE_VENDOR);
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}
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static int
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hv_ata_pci_attach(device_t dev)
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{
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return 0;
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}
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static int
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hv_ata_pci_detach(device_t dev)
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{
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return 0;
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}
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/**
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* Detect Hyper-V and enable fast IDE
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* via enlighted storage driver
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*/
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static int
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hv_check_for_hyper_v(void)
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{
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u_int regs[4];
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int hyper_v_detected = 0;
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do_cpuid(1, regs);
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if (regs[2] & 0x80000000) {
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/* if(a hypervisor is detected) */
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/* make sure this really is Hyper-V */
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/* we look at the CPUID info */
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do_cpuid(HV_X64_MSR_GUEST_OS_ID, regs);
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hyper_v_detected =
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regs[0] >= HV_X64_CPUID_MIN &&
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regs[0] <= HV_X64_CPUID_MAX &&
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!memcmp("Microsoft Hv", ®s[1], 12);
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}
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return (hyper_v_detected);
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}
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static device_method_t hv_ata_pci_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, hv_ata_pci_probe),
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DEVMETHOD(device_attach, hv_ata_pci_attach),
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DEVMETHOD(device_detach, hv_ata_pci_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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devclass_t hv_ata_pci_devclass;
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static driver_t hv_ata_pci_disengage_driver = {
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"pciata-disable",
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hv_ata_pci_methods,
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sizeof(struct ata_pci_controller),
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};
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DRIVER_MODULE(atapci_dis, pci, hv_ata_pci_disengage_driver,
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hv_ata_pci_devclass, NULL, NULL);
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MODULE_VERSION(atapci_dis, 1);
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MODULE_DEPEND(atapci_dis, ata, 1, 1, 1);
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@ -194,7 +194,7 @@ static device_method_t storvsc_methods[] = {
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DEVMETHOD(device_attach, storvsc_attach),
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DEVMETHOD(device_detach, storvsc_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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{ 0, 0 }
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DEVMETHOD_END
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};
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static driver_t storvsc_driver = {
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@ -203,10 +203,9 @@ static driver_t storvsc_driver = {
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static devclass_t storvsc_devclass;
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DRIVER_MODULE(storvsc, vmbus, storvsc_driver, storvsc_devclass, 0, 0);
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MODULE_VERSION(storvsc,1);
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MODULE_VERSION(storvsc, 1);
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MODULE_DEPEND(storvsc, vmbus, 1, 1, 1);
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extern int ata_disk_enable;
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/**
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* The host is capable of sending messages to us that are
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@ -759,15 +758,24 @@ scan_for_luns(struct storvsc_softc *sc)
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static int
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storvsc_probe(device_t dev)
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{
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int ata_disk_enable = 0;
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int ret = ENXIO;
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switch (storvsc_get_storage_type(dev)) {
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case DRIVER_BLKVSC:
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if (ata_disk_enable == 0) {
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ret = 0;
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}
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if(bootverbose)
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device_printf(dev, "DRIVER_BLKVSC-Emulated ATA/IDE probe\n");
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if (!getenv_int("hw.ata.disk_enable", &ata_disk_enable)) {
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if(bootverbose)
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device_printf(dev,
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"Enlightened ATA/IDE detected\n");
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ret = 0;
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} else if(bootverbose)
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device_printf(dev, "Emulated ATA/IDE set (hw.ata.disk_enable set)\n");
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break;
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case DRIVER_STORVSC:
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if(bootverbose)
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device_printf(dev, "Enlightened SCSI device detected\n");
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ret = 0;
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break;
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default:
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@ -354,7 +354,7 @@ vmbus_bus_init(void)
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if (ret) {
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if(bootverbose)
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printf("Error VMBUS: Hypervisor Initialization Failed!\n");
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printf("Error VMBUS: Hypervisor Initialization Failed!\n");
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return (ret);
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}
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