freebsd-dev/sys/dev/mpr/mpr_pci.c
Scott Long 7eed4c1853 Fix line wrap issues.
Sponsored by:	Netflix
2017-09-15 20:58:52 +00:00

457 lines
12 KiB
C

/*-
* Copyright (c) 2009 Yahoo! Inc.
* 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 Avago Tech (LSI) MPT3 controllers */
/* TODO Move headers to mprvar */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.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/pci/pci_private.h>
#include <dev/mpr/mpi/mpi2_type.h>
#include <dev/mpr/mpi/mpi2.h>
#include <dev/mpr/mpi/mpi2_ioc.h>
#include <dev/mpr/mpi/mpi2_cnfg.h>
#include <dev/mpr/mpi/mpi2_tool.h>
#include <dev/mpr/mpi/mpi2_pci.h>
#include <sys/queue.h>
#include <sys/kthread.h>
#include <dev/mpr/mpr_ioctl.h>
#include <dev/mpr/mprvar.h>
static int mpr_pci_probe(device_t);
static int mpr_pci_attach(device_t);
static int mpr_pci_detach(device_t);
static int mpr_pci_suspend(device_t);
static int mpr_pci_resume(device_t);
static void mpr_pci_free(struct mpr_softc *);
static int mpr_alloc_msix(struct mpr_softc *sc, int msgs);
static int mpr_alloc_msi(struct mpr_softc *sc, int msgs);
static int mpr_pci_alloc_interrupts(struct mpr_softc *sc);
static device_method_t mpr_methods[] = {
DEVMETHOD(device_probe, mpr_pci_probe),
DEVMETHOD(device_attach, mpr_pci_attach),
DEVMETHOD(device_detach, mpr_pci_detach),
DEVMETHOD(device_suspend, mpr_pci_suspend),
DEVMETHOD(device_resume, mpr_pci_resume),
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
{ 0, 0 }
};
static driver_t mpr_pci_driver = {
"mpr",
mpr_methods,
sizeof(struct mpr_softc)
};
static devclass_t mpr_devclass;
DRIVER_MODULE(mpr, pci, mpr_pci_driver, mpr_devclass, 0, 0);
MODULE_DEPEND(mpr, cam, 1, 1, 1);
struct mpr_ident {
uint16_t vendor;
uint16_t device;
uint16_t subvendor;
uint16_t subdevice;
u_int flags;
const char *desc;
} mpr_identifiers[] = {
{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3004,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3004" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3008,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3008" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_1,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3108_1" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_2,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3108_2" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_5,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3108_5" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_6,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3108_6" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3216,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3216" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3224,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3224" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_1,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3316_1" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3316_2,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3316_2" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_1,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3324_1" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3324_2,
0xffff, 0xffff, 0, "Avago Technologies (LSI) SAS3324_2" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3408,
0xffff, 0xffff, MPR_FLAGS_GEN35_IOC,
"Avago Technologies (LSI) SAS3408" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3416,
0xffff, 0xffff, MPR_FLAGS_GEN35_IOC,
"Avago Technologies (LSI) SAS3416" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508,
0xffff, 0xffff, MPR_FLAGS_GEN35_IOC,
"Avago Technologies (LSI) SAS3508" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3508_1,
0xffff, 0xffff, MPR_FLAGS_GEN35_IOC,
"Avago Technologies (LSI) SAS3508_1" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516,
0xffff, 0xffff, MPR_FLAGS_GEN35_IOC,
"Avago Technologies (LSI) SAS3516" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3516_1,
0xffff, 0xffff, MPR_FLAGS_GEN35_IOC,
"Avago Technologies (LSI) SAS3516_1" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3616,
0xffff, 0xffff, MPR_FLAGS_GEN35_IOC,
"Avago Technologies (LSI) SAS3616" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3708,
0xffff, 0xffff, MPR_FLAGS_GEN35_IOC,
"Avago Technologies (LSI) SAS3708" },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI26_MFGPAGE_DEVID_SAS3716,
0xffff, 0xffff, MPR_FLAGS_GEN35_IOC,
"Avago Technologies (LSI) SAS3716" },
{ 0, 0, 0, 0, 0, NULL }
};
static struct mpr_ident *
mpr_find_ident(device_t dev)
{
struct mpr_ident *m;
for (m = mpr_identifiers; m->vendor != 0; m++) {
if (m->vendor != pci_get_vendor(dev))
continue;
if (m->device != pci_get_device(dev))
continue;
if ((m->subvendor != 0xffff) &&
(m->subvendor != pci_get_subvendor(dev)))
continue;
if ((m->subdevice != 0xffff) &&
(m->subdevice != pci_get_subdevice(dev)))
continue;
return (m);
}
return (NULL);
}
static int
mpr_pci_probe(device_t dev)
{
struct mpr_ident *id;
if ((id = mpr_find_ident(dev)) != NULL) {
device_set_desc(dev, id->desc);
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
mpr_pci_attach(device_t dev)
{
struct mpr_softc *sc;
struct mpr_ident *m;
int error, i;
sc = device_get_softc(dev);
bzero(sc, sizeof(*sc));
sc->mpr_dev = dev;
m = mpr_find_ident(dev);
sc->mpr_flags = m->flags;
mpr_get_tunables(sc);
/* Twiddle basic PCI config bits for a sanity check */
pci_enable_busmaster(dev);
for (i = 0; i < PCI_MAXMAPS_0; i++) {
sc->mpr_regs_rid = PCIR_BAR(i);
if ((sc->mpr_regs_resource = bus_alloc_resource_any(dev,
SYS_RES_MEMORY, &sc->mpr_regs_rid, RF_ACTIVE)) != NULL)
break;
}
if (sc->mpr_regs_resource == NULL) {
mpr_printf(sc, "Cannot allocate PCI registers\n");
return (ENXIO);
}
sc->mpr_btag = rman_get_bustag(sc->mpr_regs_resource);
sc->mpr_bhandle = rman_get_bushandle(sc->mpr_regs_resource);
/* Allocate the parent DMA tag */
if (bus_dma_tag_create( bus_get_dma_tag(dev), /* 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->mpr_parent_dmat)) {
mpr_printf(sc, "Cannot allocate parent DMA tag\n");
mpr_pci_free(sc);
return (ENOMEM);
}
if (((error = mpr_pci_alloc_interrupts(sc)) != 0) ||
((error = mpr_attach(sc)) != 0))
mpr_pci_free(sc);
return (error);
}
/*
* Allocate, but don't assign interrupts early. Doing it before requesting
* the IOCFacts message informs the firmware that we want to do MSI-X
* multiqueue. We might not use all of the available messages, but there's
* no reason to re-alloc if we don't.
*/
int
mpr_pci_alloc_interrupts(struct mpr_softc *sc)
{
device_t dev;
int error, msgs;
dev = sc->mpr_dev;
error = 0;
msgs = 0;
if (sc->disable_msix == 0) {
msgs = pci_msix_count(dev);
mpr_dprint(sc, MPR_INIT, "Counted %d MSI-X messages\n", msgs);
msgs = min(msgs, sc->max_msix);
msgs = min(msgs, MPR_MSIX_MAX);
msgs = min(msgs, 1); /* XXX */
if (msgs != 0) {
mpr_dprint(sc, MPR_INIT, "Attempting to allocate %d "
"MSI-X messages\n", msgs);
error = mpr_alloc_msix(sc, msgs);
}
}
if (((error != 0) || (msgs == 0)) && (sc->disable_msi == 0)) {
msgs = pci_msi_count(dev);
mpr_dprint(sc, MPR_INIT, "Counted %d MSI messages\n", msgs);
msgs = min(msgs, MPR_MSI_MAX);
if (msgs != 0) {
mpr_dprint(sc, MPR_INIT, "Attempting to allocated %d "
"MSI messages\n", MPR_MSI_MAX);
error = mpr_alloc_msi(sc, MPR_MSI_MAX);
}
}
if ((error != 0) || (msgs == 0)) {
/*
* If neither MSI or MSI-X are available, assume legacy INTx.
* This also implies that there will be only 1 queue.
*/
mpr_dprint(sc, MPR_INIT, "Falling back to legacy INTx\n");
sc->mpr_flags |= MPR_FLAGS_INTX;
msgs = 1;
} else
sc->mpr_flags |= MPR_FLAGS_MSI;
sc->msi_msgs = msgs;
mpr_dprint(sc, MPR_INIT, "Allocated %d interrupts\n", msgs);
return (error);
}
int
mpr_pci_setup_interrupts(struct mpr_softc *sc)
{
device_t dev;
struct mpr_queue *q;
void *ihandler;
int i, error, rid, initial_rid;
dev = sc->mpr_dev;
error = ENXIO;
if (sc->mpr_flags & MPR_FLAGS_INTX) {
initial_rid = 0;
ihandler = mpr_intr;
} else if (sc->mpr_flags & MPR_FLAGS_MSI) {
initial_rid = 1;
ihandler = mpr_intr_msi;
} else {
mpr_dprint(sc, MPR_ERROR|MPR_INIT,
"Unable to set up interrupts\n");
return (EINVAL);
}
for (i = 0; i < sc->msi_msgs; i++) {
q = &sc->queues[i];
rid = i + initial_rid;
q->irq_rid = rid;
q->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&q->irq_rid, RF_ACTIVE);
if (q->irq == NULL) {
mpr_dprint(sc, MPR_ERROR|MPR_INIT,
"Cannot allocate interrupt RID %d\n", rid);
sc->msi_msgs = i;
break;
}
error = bus_setup_intr(dev, q->irq,
INTR_TYPE_BIO | INTR_MPSAFE, NULL, ihandler,
sc, &q->intrhand);
if (error) {
mpr_dprint(sc, MPR_ERROR|MPR_INIT,
"Cannot setup interrupt RID %d\n", rid);
sc->msi_msgs = i;
break;
}
}
mpr_dprint(sc, MPR_INIT, "Set up %d interrupts\n", sc->msi_msgs);
return (error);
}
static int
mpr_pci_detach(device_t dev)
{
struct mpr_softc *sc;
int error;
sc = device_get_softc(dev);
if ((error = mpr_free(sc)) != 0)
return (error);
mpr_pci_free(sc);
return (0);
}
void
mpr_pci_free_interrupts(struct mpr_softc *sc)
{
struct mpr_queue *q;
int i;
if (sc->queues == NULL)
return;
for (i = 0; i < sc->msi_msgs; i++) {
q = &sc->queues[i];
if (q->irq != NULL) {
bus_teardown_intr(sc->mpr_dev, q->irq,
q->intrhand);
bus_release_resource(sc->mpr_dev, SYS_RES_IRQ,
q->irq_rid, q->irq);
}
}
}
static void
mpr_pci_free(struct mpr_softc *sc)
{
if (sc->mpr_parent_dmat != NULL) {
bus_dma_tag_destroy(sc->mpr_parent_dmat);
}
mpr_pci_free_interrupts(sc);
if (sc->mpr_flags & MPR_FLAGS_MSI)
pci_release_msi(sc->mpr_dev);
if (sc->mpr_regs_resource != NULL) {
bus_release_resource(sc->mpr_dev, SYS_RES_MEMORY,
sc->mpr_regs_rid, sc->mpr_regs_resource);
}
return;
}
static int
mpr_pci_suspend(device_t dev)
{
return (EINVAL);
}
static int
mpr_pci_resume(device_t dev)
{
return (EINVAL);
}
static int
mpr_alloc_msix(struct mpr_softc *sc, int msgs)
{
int error;
error = pci_alloc_msix(sc->mpr_dev, &msgs);
return (error);
}
static int
mpr_alloc_msi(struct mpr_softc *sc, int msgs)
{
int error;
error = pci_alloc_msi(sc->mpr_dev, &msgs);
return (error);
}
int
mpr_pci_restore(struct mpr_softc *sc)
{
struct pci_devinfo *dinfo;
mpr_dprint(sc, MPR_TRACE, "%s\n", __func__);
dinfo = device_get_ivars(sc->mpr_dev);
if (dinfo == NULL) {
mpr_dprint(sc, MPR_FAULT, "%s: NULL dinfo\n", __func__);
return (EINVAL);
}
pci_cfg_restore(sc->mpr_dev, dinfo);
return (0);
}