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93729c1796
freebsd/sys/dev/mfi/mfi_pci.c
Scott Long c68534f1d5 Update PCI drivers to no longer look at the MEMIO-enabled bit in the PCI 
command register.  The lazy BAR allocation code in FreeBSD sometimes
disables this bit when it detects a range conflict, and will re-enable
it on demand when a driver allocates the BAR.  Thus, the bit is no longer
a reliable indication of capability, and should not be checked.  This
results in the elimination of a lot of code from drivers, and also gives
the opportunity to simplify a lot of drivers to use a helper API to set
the busmaster enable bit.

This changes fixes some recent reports of disk controllers and their
associated drives/enclosures disappearing during boot.

Submitted by:	jhb
Reviewed by:	jfv, marius, achadd, achim
MFC after:	1 day
2013-08-12 23:30:01 +00:00

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/*-
* 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.
*/
/*-
* Copyright (c) 2007 LSI Corp.
* Copyright (c) 2007 Rajesh Prabhakaran.
* 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("$FreeBSD$");
/* PCI/PCI-X/PCIe bus interface for the LSI MegaSAS controllers */
#include "opt_mfi.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/selinfo.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/bio.h>
#include <sys/malloc.h>
#include <sys/sysctl.h>
#include <sys/uio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/mfi/mfireg.h>
#include <dev/mfi/mfi_ioctl.h>
#include <dev/mfi/mfivar.h>
static int mfi_pci_probe(device_t);
static int mfi_pci_attach(device_t);
static int mfi_pci_detach(device_t);
static int mfi_pci_suspend(device_t);
static int mfi_pci_resume(device_t);
static void mfi_pci_free(struct mfi_softc *);
static device_method_t mfi_methods[] = {
DEVMETHOD(device_probe, mfi_pci_probe),
DEVMETHOD(device_attach, mfi_pci_attach),
DEVMETHOD(device_detach, mfi_pci_detach),
DEVMETHOD(device_suspend, mfi_pci_suspend),
DEVMETHOD(device_resume, mfi_pci_resume),
DEVMETHOD_END
};
static driver_t mfi_pci_driver = {
"mfi",
mfi_methods,
sizeof(struct mfi_softc)
};
static devclass_t mfi_devclass;
DRIVER_MODULE(mfi, pci, mfi_pci_driver, mfi_devclass, 0, 0);
MODULE_VERSION(mfi, 1);
static int mfi_msi = 1;
TUNABLE_INT("hw.mfi.msi", &mfi_msi);
SYSCTL_INT(_hw_mfi, OID_AUTO, msi, CTLFLAG_RDTUN, &mfi_msi, 0,
"Enable use of MSI interrupts");
struct mfi_ident {
uint16_t vendor;
uint16_t device;
uint16_t subvendor;
uint16_t subdevice;
int flags;
const char *desc;
} mfi_identifiers[] = {
{0x1000, 0x005b, 0x1028, 0x1f2d, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H810 Adapter"},
{0x1000, 0x005b, 0x1028, 0x1f30, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710 Embedded"},
{0x1000, 0x005b, 0x1028, 0x1f31, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710P Adapter"},
{0x1000, 0x005b, 0x1028, 0x1f33, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710P Mini (blades)"},
{0x1000, 0x005b, 0x1028, 0x1f34, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710P Mini (monolithics)"},
{0x1000, 0x005b, 0x1028, 0x1f35, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710 Adapter"},
{0x1000, 0x005b, 0x1028, 0x1f37, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710 Mini (blades)"},
{0x1000, 0x005b, 0x1028, 0x1f38, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Dell PERC H710 Mini (monolithics)"},
{0x1000, 0x005b, 0x8086, 0x9265, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Intel (R) RAID Controller RS25DB080"},
{0x1000, 0x005b, 0x8086, 0x9285, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "Intel (R) RAID Controller RS25NB008"},
{0x1000, 0x005b, 0xffff, 0xffff, MFI_FLAGS_SKINNY| MFI_FLAGS_TBOLT, "ThunderBolt"},
{0x1000, 0x0060, 0x1028, 0xffff, MFI_FLAGS_1078, "Dell PERC 6"},
{0x1000, 0x0060, 0xffff, 0xffff, MFI_FLAGS_1078, "LSI MegaSAS 1078"},
{0x1000, 0x0071, 0xffff, 0xffff, MFI_FLAGS_SKINNY, "Drake Skinny"},
{0x1000, 0x0073, 0xffff, 0xffff, MFI_FLAGS_SKINNY, "Drake Skinny"},
{0x1000, 0x0078, 0xffff, 0xffff, MFI_FLAGS_GEN2, "LSI MegaSAS Gen2"},
{0x1000, 0x0079, 0x1028, 0x1f15, MFI_FLAGS_GEN2, "Dell PERC H800 Adapter"},
{0x1000, 0x0079, 0x1028, 0x1f16, MFI_FLAGS_GEN2, "Dell PERC H700 Adapter"},
{0x1000, 0x0079, 0x1028, 0x1f17, MFI_FLAGS_GEN2, "Dell PERC H700 Integrated"},
{0x1000, 0x0079, 0x1028, 0x1f18, MFI_FLAGS_GEN2, "Dell PERC H700 Modular"},
{0x1000, 0x0079, 0x1028, 0x1f19, MFI_FLAGS_GEN2, "Dell PERC H700"},
{0x1000, 0x0079, 0x1028, 0x1f1a, MFI_FLAGS_GEN2, "Dell PERC H800 Proto Adapter"},
{0x1000, 0x0079, 0x1028, 0x1f1b, MFI_FLAGS_GEN2, "Dell PERC H800"},
{0x1000, 0x0079, 0x1028, 0xffff, MFI_FLAGS_GEN2, "Dell PERC Gen2"},
{0x1000, 0x0079, 0xffff, 0xffff, MFI_FLAGS_GEN2, "LSI MegaSAS Gen2"},
{0x1000, 0x007c, 0xffff, 0xffff, MFI_FLAGS_1078, "LSI MegaSAS 1078"},
{0x1000, 0x0411, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Brocton IOP */
{0x1000, 0x0413, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Verde ZCR */
{0x1028, 0x0015, 0xffff, 0xffff, MFI_FLAGS_1064R, "Dell PERC 5/i"},
{0, 0, 0, 0, 0, NULL}
};
static struct mfi_ident *
mfi_find_ident(device_t dev)
{
struct mfi_ident *m;
for (m = mfi_identifiers; m->vendor != 0; m++) {
if ((m->vendor == pci_get_vendor(dev)) &&
(m->device == pci_get_device(dev)) &&
((m->subvendor == pci_get_subvendor(dev)) ||
(m->subvendor == 0xffff)) &&
((m->subdevice == pci_get_subdevice(dev)) ||
(m->subdevice == 0xffff)))
return (m);
}
return (NULL);
}
static int
mfi_pci_probe(device_t dev)
{
struct mfi_ident *id;
if ((id = mfi_find_ident(dev)) != NULL) {
device_set_desc(dev, id->desc);
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
mfi_pci_attach(device_t dev)
{
struct mfi_softc *sc;
struct mfi_ident *m;
int count, error;
sc = device_get_softc(dev);
bzero(sc, sizeof(*sc));
sc->mfi_dev = dev;
m = mfi_find_ident(dev);
sc->mfi_flags = m->flags;
/* Ensure busmastering is enabled */
pci_enable_busmaster(dev);
/* Allocate PCI registers */
if ((sc->mfi_flags & MFI_FLAGS_1064R) ||
(sc->mfi_flags & MFI_FLAGS_1078)) {
/* 1068/1078: Memory mapped BAR is at offset 0x10 */
sc->mfi_regs_rid = PCIR_BAR(0);
}
else if ((sc->mfi_flags & MFI_FLAGS_GEN2) ||
(sc->mfi_flags & MFI_FLAGS_SKINNY) ||
(sc->mfi_flags & MFI_FLAGS_TBOLT)) {
/* Gen2/Skinny: Memory mapped BAR is at offset 0x14 */
sc->mfi_regs_rid = PCIR_BAR(1);
}
if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev,
SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) {
device_printf(dev, "Cannot allocate PCI registers\n");
return (ENXIO);
}
sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource);
sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource);
error = ENOMEM;
/* Allocate parent DMA tag */
if (bus_dma_tag_create( bus_get_dma_tag(dev), /* PCI parent */
1, 0, /* algnmnt, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
BUS_SPACE_UNRESTRICTED, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->mfi_parent_dmat)) {
device_printf(dev, "Cannot allocate parent DMA tag\n");
goto out;
}
/* Allocate IRQ resource. */
sc->mfi_irq_rid = 0;
count = 1;
if (mfi_msi && pci_alloc_msi(sc->mfi_dev, &count) == 0) {
device_printf(sc->mfi_dev, "Using MSI\n");
sc->mfi_irq_rid = 1;
}
if ((sc->mfi_irq = bus_alloc_resource_any(sc->mfi_dev, SYS_RES_IRQ,
&sc->mfi_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
device_printf(sc->mfi_dev, "Cannot allocate interrupt\n");
error = EINVAL;
goto out;
}
error = mfi_attach(sc);
out:
if (error) {
mfi_free(sc);
mfi_pci_free(sc);
}
return (error);
}
static int
mfi_pci_detach(device_t dev)
{
struct mfi_softc *sc;
int error, devcount, i;
device_t *devlist;
sc = device_get_softc(dev);
sx_xlock(&sc->mfi_config_lock);
mtx_lock(&sc->mfi_io_lock);
if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) {
mtx_unlock(&sc->mfi_io_lock);
sx_xunlock(&sc->mfi_config_lock);
return (EBUSY);
}
sc->mfi_detaching = 1;
mtx_unlock(&sc->mfi_io_lock);
if ((error = device_get_children(sc->mfi_dev, &devlist, &devcount)) != 0) {
sx_xunlock(&sc->mfi_config_lock);
return error;
}
for (i = 0; i < devcount; i++)
device_delete_child(sc->mfi_dev, devlist[i]);
free(devlist, M_TEMP);
sx_xunlock(&sc->mfi_config_lock);
EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh);
mfi_shutdown(sc);
mfi_free(sc);
mfi_pci_free(sc);
return (0);
}
static void
mfi_pci_free(struct mfi_softc *sc)
{
if (sc->mfi_regs_resource != NULL) {
bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY,
sc->mfi_regs_rid, sc->mfi_regs_resource);
}
if (sc->mfi_irq_rid != 0)
pci_release_msi(sc->mfi_dev);
return;
}
static int
mfi_pci_suspend(device_t dev)
{
return (EINVAL);
}
static int
mfi_pci_resume(device_t dev)
{
return (EINVAL);
}
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