/*- * 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. * * $FreeBSD: head/sys/dev/mpr/mpr_pci.c 323629 2017-09-15 20:58:52Z scottl $ */ /* PCI/PCI-X/PCIe bus interface for the Avago Tech (LSI) MPT3 controllers */ /* TODO Move headers to mprvar */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include 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_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, NULL, NULL); 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 */ &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. * * XXX swildner: MSI-X support missing */ int mpr_pci_alloc_interrupts(struct mpr_softc *sc) { device_t dev; dev = sc->mpr_dev; sc->msi_msgs = 1; sc->irq_type = pci_alloc_1intr(dev, sc->msi_enable, &sc->irq_rid, &sc->irq_flags); if (sc->irq_type == PCI_INTR_TYPE_MSI) sc->mpr_flags |= MPR_FLAGS_MSI; else sc->mpr_flags |= MPR_FLAGS_INTX; return (0); } int mpr_pci_setup_interrupts(struct mpr_softc *sc) { device_t dev; struct mpr_queue *q; void *ihandler; int i, error, rid; dev = sc->mpr_dev; error = ENXIO; if (sc->mpr_flags & MPR_FLAGS_INTX) { ihandler = mpr_intr; } else if (sc->mpr_flags & MPR_FLAGS_MSI) { 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 = sc->irq_rid; q->irq_rid = rid; q->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &q->irq_rid, sc->irq_flags); 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_MPSAFE, ihandler, sc, &q->intrhand, NULL); 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); } 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); }