/*- * Copyright (c) 2015-2016 Landon Fuller * Copyright (c) 2017 The FreeBSD Foundation * All rights reserved. * * Portions of this software were developed by Landon Fuller * under sponsorship from the FreeBSD Foundation. * * 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, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any * redistribution must be conditioned upon including a substantially * similar Disclaimer requirement for further binary redistribution. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. * */ #include /* * bhnd(4) driver mix-in providing shared common methods for * bhnd bus devices attached via a MIPS root nexus. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "bcm_machdep.h" #include "bcm_mipsvar.h" #include "bhnd_nexusvar.h" /** * Default bhnd_nexus implementation of BHND_BUS_GET_SERVICE_REGISTRY(). */ static struct bhnd_service_registry * bhnd_nexus_get_service_registry(device_t dev, device_t child) { struct bcm_platform *bp = bcm_get_platform(); return (&bp->services); } /** * Default bhnd_nexus implementation of BHND_BUS_ACTIVATE_RESOURCE(). */ static int bhnd_nexus_activate_resource(device_t dev, device_t child, int type, int rid, struct bhnd_resource *r) { int error; /* Always direct */ if ((error = bus_activate_resource(child, type, rid, r->res))) return (error); r->direct = true; return (0); } /** * Default bhnd_nexus implementation of BHND_BUS_DEACTIVATE_RESOURCE(). */ static int bhnd_nexus_deactivate_resource(device_t dev, device_t child, int type, int rid, struct bhnd_resource *r) { int error; /* Always direct */ KASSERT(r->direct, ("indirect resource delegated to bhnd_nexus\n")); if ((error = bus_deactivate_resource(child, type, rid, r->res))) return (error); r->direct = false; return (0); } /** * Default bhnd_nexus implementation of BHND_BUS_IS_HW_DISABLED(). */ static bool bhnd_nexus_is_hw_disabled(device_t dev, device_t child) { struct bcm_platform *bp; struct bhnd_chipid *cid; bp = bcm_get_platform(); cid = &bp->cid; /* The BCM4706 low-cost package leaves secondary GMAC cores * floating */ if (cid->chip_id == BHND_CHIPID_BCM4706 && cid->chip_pkg == BHND_PKGID_BCM4706L && bhnd_get_device(child) == BHND_COREID_4706_GMAC && bhnd_get_core_unit(child) != 0) { return (true); } return (false); } /** * Default bhnd_nexus implementation of BHND_BUS_AGET_ATTACH_TYPE(). */ static bhnd_attach_type bhnd_nexus_get_attach_type(device_t dev, device_t child) { return (BHND_ATTACH_NATIVE); } /** * Default bhnd_nexus implementation of BHND_BUS_GET_CHIPID(). */ static const struct bhnd_chipid * bhnd_nexus_get_chipid(device_t dev, device_t child) { return (&bcm_get_platform()->cid); } /** * Default bhnd_nexus implementation of BHND_BUS_READ_BOARD_INFO(). */ static int bhnd_nexus_read_board_info(device_t dev, device_t child, struct bhnd_board_info *info) { int error; /* Initialize with NVRAM-derived values */ if ((error = bhnd_bus_generic_read_board_info(dev, child, info))) return (error); /* The board vendor should default to PCI_VENDOR_BROADCOM if not * otherwise specified */ if (info->board_vendor == 0) info->board_vendor = PCI_VENDOR_BROADCOM; return (0); } /** * Default bhnd_nexus implementation of BHND_BUS_MAP_INTR(). */ static int bhnd_nexus_map_intr(device_t dev, device_t child, u_int intr, rman_res_t *irq) { struct bcm_mips_intr_map_data *imd; u_int ivec; uintptr_t xref; int error; /* Fetch the backplane interrupt vector */ if ((error = bhnd_get_intr_ivec(child, intr, &ivec))) { device_printf(dev, "error fetching ivec for intr %u: %d\n", intr, error); return (error); } /* Determine our interrupt domain */ xref = BHND_BUS_GET_INTR_DOMAIN(dev, child, false); KASSERT(xref != 0, ("missing interrupt domain")); /* Allocate our map data */ imd = (struct bcm_mips_intr_map_data *)intr_alloc_map_data( INTR_MAP_DATA_BCM_MIPS, sizeof(*imd), M_WAITOK | M_ZERO); imd->ivec = ivec; /* Map the IRQ */ *irq = intr_map_irq(NULL, xref, &imd->mdata); return (0); } /** * Default bhnd_nexus implementation of BHND_BUS_UNMAP_INTR(). */ static void bhnd_nexus_unmap_intr(device_t dev, device_t child, rman_res_t irq) { if (irq > UINT_MAX) panic("invalid irq: %ju", (uintmax_t)irq); intr_unmap_irq(irq); } /** * Default bhnd_nexus implementation of BHND_BUS_GET_DMA_TRANSLATION(). */ static int bhnd_nexus_get_dma_translation(device_t dev, device_t child, u_int width, uint32_t flags, bus_dma_tag_t *dmat, struct bhnd_dma_translation *translation) { struct bcm_platform *bp = bcm_get_platform(); /* We don't (currently) support any flags */ if (flags != 0x0) return (ENOENT); KASSERT(width > 0 && width <= BHND_DMA_ADDR_64BIT, ("invalid width %u", width)); /* Is the requested width supported? */ if (width > BHND_DMA_ADDR_32BIT) { /* Backplane must support 64-bit addressing */ if (!(bp->cid.chip_caps & BHND_CAP_BP64)) width = BHND_DMA_ADDR_32BIT; } /* No DMA address translation required */ if (dmat != NULL) *dmat = bus_get_dma_tag(dev); if (translation != NULL) { *translation = (struct bhnd_dma_translation) { .base_addr = 0x0, .addr_mask = BHND_DMA_ADDR_BITMASK(width), .addrext_mask = 0 }; } return (0); } static device_method_t bhnd_nexus_methods[] = { /* bhnd interface */ DEVMETHOD(bhnd_bus_get_service_registry,bhnd_nexus_get_service_registry), DEVMETHOD(bhnd_bus_register_provider, bhnd_bus_generic_sr_register_provider), DEVMETHOD(bhnd_bus_deregister_provider, bhnd_bus_generic_sr_deregister_provider), DEVMETHOD(bhnd_bus_retain_provider, bhnd_bus_generic_sr_retain_provider), DEVMETHOD(bhnd_bus_release_provider, bhnd_bus_generic_sr_release_provider), DEVMETHOD(bhnd_bus_activate_resource, bhnd_nexus_activate_resource), DEVMETHOD(bhnd_bus_deactivate_resource, bhnd_nexus_deactivate_resource), DEVMETHOD(bhnd_bus_is_hw_disabled, bhnd_nexus_is_hw_disabled), DEVMETHOD(bhnd_bus_get_attach_type, bhnd_nexus_get_attach_type), DEVMETHOD(bhnd_bus_get_chipid, bhnd_nexus_get_chipid), DEVMETHOD(bhnd_bus_get_dma_translation, bhnd_nexus_get_dma_translation), DEVMETHOD(bhnd_bus_get_intr_domain, bhnd_bus_generic_get_intr_domain), DEVMETHOD(bhnd_bus_map_intr, bhnd_nexus_map_intr), DEVMETHOD(bhnd_bus_read_board_info, bhnd_nexus_read_board_info), DEVMETHOD(bhnd_bus_unmap_intr, bhnd_nexus_unmap_intr), DEVMETHOD_END }; DEFINE_CLASS_0(bhnd, bhnd_nexus_driver, bhnd_nexus_methods, sizeof(struct bhnd_softc));