diff options
Diffstat (limited to 'sys/dev/mpr/mpr_pci.c')
| -rw-r--r-- | sys/dev/mpr/mpr_pci.c | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/sys/dev/mpr/mpr_pci.c b/sys/dev/mpr/mpr_pci.c new file mode 100644 index 000000000000..e19f33adceb4 --- /dev/null +++ b/sys/dev/mpr/mpr_pci.c @@ -0,0 +1,350 @@ +/*- + * 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 LSI MPT2 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 <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 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, "LSI SAS3004" }, + { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3008, + 0xffff, 0xffff, 0, "LSI SAS3008" }, + { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_1, + 0xffff, 0xffff, 0, "LSI SAS3108_1" }, + { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_2, + 0xffff, 0xffff, 0, "LSI SAS3108_2" }, + { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_5, + 0xffff, 0xffff, 0, "LSI SAS3108_5" }, + { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3108_6, + 0xffff, 0xffff, 0, "LSI SAS3108_6" }, + { 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; + + sc = device_get_softc(dev); + bzero(sc, sizeof(*sc)); + sc->mpr_dev = dev; + m = mpr_find_ident(dev); + sc->mpr_flags = m->flags; + + /* Twiddle basic PCI config bits for a sanity check */ + pci_enable_busmaster(dev); + + /* Allocate the System Interface Register Set */ + sc->mpr_regs_rid = PCIR_BAR(1); + if ((sc->mpr_regs_resource = bus_alloc_resource_any(dev, + SYS_RES_MEMORY, &sc->mpr_regs_rid, RF_ACTIVE)) == 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_attach(sc)) != 0) + mpr_pci_free(sc); + + return (error); +} + +int +mpr_pci_setup_interrupts(struct mpr_softc *sc) +{ + device_t dev; + int i, error, msgs; + + dev = sc->mpr_dev; + error = ENXIO; + if ((sc->disable_msix == 0) && + ((msgs = pci_msix_count(dev)) >= MPR_MSI_COUNT)) + error = mpr_alloc_msix(sc, MPR_MSI_COUNT); + if ((error != 0) && (sc->disable_msi == 0) && + ((msgs = pci_msi_count(dev)) >= MPR_MSI_COUNT)) + error = mpr_alloc_msi(sc, MPR_MSI_COUNT); + + if (error != 0) { + sc->mpr_flags |= MPR_FLAGS_INTX; + sc->mpr_irq_rid[0] = 0; + sc->mpr_irq[0] = bus_alloc_resource_any(dev, SYS_RES_IRQ, + &sc->mpr_irq_rid[0], RF_SHAREABLE | RF_ACTIVE); + if (sc->mpr_irq[0] == NULL) { + mpr_printf(sc, "Cannot allocate INTx interrupt\n"); + return (ENXIO); + } + error = bus_setup_intr(dev, sc->mpr_irq[0], + INTR_TYPE_BIO | INTR_MPSAFE, NULL, mpr_intr, sc, + &sc->mpr_intrhand[0]); + if (error) + mpr_printf(sc, "Cannot setup INTx interrupt\n"); + } else { + sc->mpr_flags |= MPR_FLAGS_MSI; + for (i = 0; i < MPR_MSI_COUNT; i++) { + sc->mpr_irq_rid[i] = i + 1; + sc->mpr_irq[i] = bus_alloc_resource_any(dev, + SYS_RES_IRQ, &sc->mpr_irq_rid[i], RF_ACTIVE); + if (sc->mpr_irq[i] == NULL) { + mpr_printf(sc, + "Cannot allocate MSI interrupt\n"); + return (ENXIO); + } + error = bus_setup_intr(dev, sc->mpr_irq[i], + INTR_TYPE_BIO | INTR_MPSAFE, NULL, mpr_intr_msi, + sc, &sc->mpr_intrhand[i]); + if (error) { + mpr_printf(sc, + "Cannot setup MSI interrupt %d\n", i); + break; + } + } + } + + 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); +} + +static void +mpr_pci_free(struct mpr_softc *sc) +{ + int i; + + if (sc->mpr_parent_dmat != NULL) { + bus_dma_tag_destroy(sc->mpr_parent_dmat); + } + + if (sc->mpr_flags & MPR_FLAGS_MSI) { + for (i = 0; i < MPR_MSI_COUNT; i++) { + if (sc->mpr_irq[i] != NULL) { + bus_teardown_intr(sc->mpr_dev, sc->mpr_irq[i], + sc->mpr_intrhand[i]); + bus_release_resource(sc->mpr_dev, SYS_RES_IRQ, + sc->mpr_irq_rid[i], sc->mpr_irq[i]); + } + } + pci_release_msi(sc->mpr_dev); + } + + if (sc->mpr_flags & MPR_FLAGS_INTX) { + bus_teardown_intr(sc->mpr_dev, sc->mpr_irq[0], + sc->mpr_intrhand[0]); + bus_release_resource(sc->mpr_dev, SYS_RES_IRQ, + sc->mpr_irq_rid[0], sc->mpr_irq[0]); + } + + 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); +} + |