250 lines
6.3 KiB
C
250 lines
6.3 KiB
C
/*-
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* Copyright (c) 2006 IronPort Systems
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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 THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/* PCI/PCI-X/PCIe bus interface for the LSI MegaSAS controllers */
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#include "opt_mfi.h"
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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/selinfo.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/bio.h>
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#include <sys/malloc.h>
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#include <sys/uio.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/mfi/mfireg.h>
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#include <dev/mfi/mfi_ioctl.h>
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#include <dev/mfi/mfivar.h>
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static int mfi_pci_probe(device_t);
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static int mfi_pci_attach(device_t);
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static int mfi_pci_detach(device_t);
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static int mfi_pci_suspend(device_t);
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static int mfi_pci_resume(device_t);
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static void mfi_pci_free(struct mfi_softc *);
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static device_method_t mfi_methods[] = {
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DEVMETHOD(device_probe, mfi_pci_probe),
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DEVMETHOD(device_attach, mfi_pci_attach),
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DEVMETHOD(device_detach, mfi_pci_detach),
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DEVMETHOD(device_suspend, mfi_pci_suspend),
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DEVMETHOD(device_resume, mfi_pci_resume),
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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{ 0, 0 }
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};
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static driver_t mfi_pci_driver = {
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"mfi",
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mfi_methods,
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sizeof(struct mfi_softc)
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};
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static devclass_t mfi_devclass;
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DRIVER_MODULE(mfi, pci, mfi_pci_driver, mfi_devclass, 0, 0);
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struct mfi_ident {
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uint16_t vendor;
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uint16_t device;
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uint16_t subvendor;
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uint16_t subdevice;
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int flags;
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const char *desc;
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} mfi_identifiers[] = {
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{0x1000, 0x0411, 0xffff, 0xffff, 0, "LSI MegaSAS 1064R"}, /* Brocton IOP */
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{0x1000, 0x0413, 0xffff, 0xffff, 0, "LSI MegaSAS 1064R"}, /* Verde ZCR */
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{0x1028, 0x0015, 0xffff, 0xffff, 0, "Dell PERC 5/i"},
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{0, 0, 0, 0, 0, NULL}
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};
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static struct mfi_ident *
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mfi_find_ident(device_t dev)
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{
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struct mfi_ident *m;
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for (m = mfi_identifiers; m->vendor != 0; m++) {
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if ((m->vendor == pci_get_vendor(dev)) &&
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(m->device == pci_get_device(dev)) &&
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((m->subvendor == pci_get_subvendor(dev)) ||
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(m->subvendor == 0xffff)) &&
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((m->subdevice == pci_get_subdevice(dev)) ||
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(m->subdevice == 0xffff)))
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return (m);
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}
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return (NULL);
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}
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static int
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mfi_pci_probe(device_t dev)
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{
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struct mfi_ident *id;
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if ((id = mfi_find_ident(dev)) != NULL) {
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device_set_desc(dev, id->desc);
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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static int
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mfi_pci_attach(device_t dev)
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{
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struct mfi_softc *sc;
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struct mfi_ident *m;
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uint32_t command;
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int error;
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sc = device_get_softc(dev);
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bzero(sc, sizeof(*sc));
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sc->mfi_dev = dev;
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/* Verify that the adapter can be set up in PCI space */
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command = pci_read_config(dev, PCIR_COMMAND, 2);
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command |= PCIM_CMD_BUSMASTEREN;
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pci_write_config(dev, PCIR_COMMAND, command, 2);
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command = pci_read_config(dev, PCIR_COMMAND, 2);
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if ((command & PCIM_CMD_BUSMASTEREN) == 0) {
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device_printf(dev, "Can't enable PCI busmaster\n");
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return (ENXIO);
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}
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if ((command & PCIM_CMD_MEMEN) == 0) {
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device_printf(dev, "PCI memory window not available\n");
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return (ENXIO);
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}
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/* Allocate PCI registers */
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sc->mfi_regs_rid = PCIR_BAR(0);
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if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev,
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SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) {
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device_printf(dev, "Cannot allocate PCI registers\n");
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return (ENXIO);
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}
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sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource);
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sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource);
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error = ENOMEM;
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/* Allocate parent DMA tag */
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if (bus_dma_tag_create( NULL, /* parent */
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1, 0, /* algnmnt, boundary */
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BUS_SPACE_MAXADDR, /* lowaddr */
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BUS_SPACE_MAXADDR, /* highaddr */
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NULL, NULL, /* filter, filterarg */
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BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
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BUS_SPACE_UNRESTRICTED, /* nsegments */
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BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
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0, /* flags */
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NULL, NULL, /* lockfunc, lockarg */
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&sc->mfi_parent_dmat)) {
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device_printf(dev, "Cannot allocate parent DMA tag\n");
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goto out;
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}
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m = mfi_find_ident(dev);
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sc->mfi_flags = m->flags;
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error = mfi_attach(sc);
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out:
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if (error) {
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mfi_free(sc);
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mfi_pci_free(sc);
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}
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return (error);
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}
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static int
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mfi_pci_detach(device_t dev)
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{
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struct mfi_softc *sc;
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struct mfi_disk *ld;
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int error;
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sc = device_get_softc(dev);
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mtx_lock(&sc->mfi_io_lock);
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if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) {
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mtx_unlock(&sc->mfi_io_lock);
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return (EBUSY);
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}
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while ((ld = TAILQ_FIRST(&sc->mfi_ld_tqh)) != NULL) {
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if ((error = device_delete_child(dev, ld->ld_dev)) != 0) {
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mtx_unlock(&sc->mfi_io_lock);
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return (error);
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}
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TAILQ_REMOVE(&sc->mfi_ld_tqh, ld, ld_link);
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}
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EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh);
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mfi_shutdown(sc);
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mfi_free(sc);
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mfi_pci_free(sc);
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return (0);
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}
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static void
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mfi_pci_free(struct mfi_softc *sc)
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{
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if (sc->mfi_regs_resource != NULL) {
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bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY,
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sc->mfi_regs_rid, sc->mfi_regs_resource);
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}
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return;
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}
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static int
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mfi_pci_suspend(device_t dev)
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{
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return (EINVAL);
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}
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static int
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mfi_pci_resume(device_t dev)
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{
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return (EINVAL);
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}
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