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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.
*/
#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/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(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
{ 0, 0 }
};
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);
struct mfi_ident {
uint16_t vendor;
uint16_t device;
uint16_t subvendor;
uint16_t subdevice;
int flags;
const char *desc;
} mfi_identifiers[] = {
{0x1000, 0x0411, 0xffff, 0xffff, 0, "LSI MegaSAS 1064R"},
{0x1028, 0x0015, 0xffff, 0xffff, 0, "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;
uint32_t command;
int error;
sc = device_get_softc(dev);
bzero(sc, sizeof(*sc));
sc->mfi_dev = dev;
/* Verify that the adapter can be set up in PCI space */
command = pci_read_config(dev, PCIR_COMMAND, 2);
command |= PCIM_CMD_BUSMASTEREN;
pci_write_config(dev, PCIR_COMMAND, command, 2);
command = pci_read_config(dev, PCIR_COMMAND, 2);
if ((command & PCIM_CMD_BUSMASTEREN) == 0) {
device_printf(dev, "Can't enable PCI busmaster\n");
return (ENXIO);
}
if ((command & PCIM_CMD_MEMEN) == 0) {
device_printf(dev, "PCI memory window not available\n");
return (ENXIO);
}
/* Allocate PCI registers */
sc->mfi_regs_rid = PCIR_BAR(0);
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( NULL, /* 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;
}
m = mfi_find_ident(dev);
sc->mfi_flags = m->flags;
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;
struct mfi_ld *ld;
int error;
sc = device_get_softc(dev);
if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0)
return (EBUSY);
while ((ld = TAILQ_FIRST(&sc->mfi_ld_tqh)) != NULL) {
error = device_delete_child(dev, ld->ld_disk);
if (error)
return (error);
TAILQ_REMOVE(&sc->mfi_ld_tqh, ld, ld_link);
free(ld->ld_info, M_MFIBUF);
free(ld, M_MFIBUF);
}
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);
}
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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