918988576c
MFC after: 3 days Sponsored by: The FreeBSD Foundation
283 lines
7.8 KiB
C
283 lines
7.8 KiB
C
/*-
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* Copyright (c) 2015-2016 Landon Fuller <landon@freebsd.org>
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* Copyright (c) 2017 The FreeBSD Foundation
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* All rights reserved.
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*
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* Portions of this software were developed by Landon Fuller
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* under sponsorship from the FreeBSD Foundation.
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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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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* bhnd(4) driver mix-in providing shared common methods for
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* bhnd bus devices attached via a MIPS root nexus.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/intr.h>
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#include <sys/limits.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/malloc.h>
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#include <machine/bus.h>
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#include <dev/bhnd/bhndvar.h>
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#include <dev/bhnd/bhnd_ids.h>
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#include <dev/bhnd/cores/chipc/chipcreg.h>
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#include "bcm_machdep.h"
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#include "bcm_mipsvar.h"
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#include "bhnd_nexusvar.h"
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/**
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* Default bhnd_nexus implementation of BHND_BUS_GET_SERVICE_REGISTRY().
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*/
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static struct bhnd_service_registry *
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bhnd_nexus_get_service_registry(device_t dev, device_t child)
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{
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struct bcm_platform *bp = bcm_get_platform();
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return (&bp->services);
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}
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/**
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* Default bhnd_nexus implementation of BHND_BUS_ACTIVATE_RESOURCE().
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*/
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static int
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bhnd_nexus_activate_resource(device_t dev, device_t child, int type, int rid,
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struct bhnd_resource *r)
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{
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int error;
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/* Always direct */
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if ((error = bus_activate_resource(child, type, rid, r->res)))
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return (error);
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r->direct = true;
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return (0);
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}
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/**
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* Default bhnd_nexus implementation of BHND_BUS_DEACTIVATE_RESOURCE().
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*/
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static int
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bhnd_nexus_deactivate_resource(device_t dev, device_t child,
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int type, int rid, struct bhnd_resource *r)
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{
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int error;
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/* Always direct */
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KASSERT(r->direct, ("indirect resource delegated to bhnd_nexus\n"));
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if ((error = bus_deactivate_resource(child, type, rid, r->res)))
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return (error);
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r->direct = false;
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return (0);
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}
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/**
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* Default bhnd_nexus implementation of BHND_BUS_IS_HW_DISABLED().
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*/
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static bool
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bhnd_nexus_is_hw_disabled(device_t dev, device_t child)
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{
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struct bcm_platform *bp;
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struct bhnd_chipid *cid;
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bp = bcm_get_platform();
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cid = &bp->cid;
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/* The BCM4706 low-cost package leaves secondary GMAC cores
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* floating */
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if (cid->chip_id == BHND_CHIPID_BCM4706 &&
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cid->chip_pkg == BHND_PKGID_BCM4706L &&
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bhnd_get_device(child) == BHND_COREID_4706_GMAC &&
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bhnd_get_core_unit(child) != 0)
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{
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return (true);
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}
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return (false);
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}
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/**
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* Default bhnd_nexus implementation of BHND_BUS_AGET_ATTACH_TYPE().
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*/
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static bhnd_attach_type
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bhnd_nexus_get_attach_type(device_t dev, device_t child)
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{
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return (BHND_ATTACH_NATIVE);
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}
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/**
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* Default bhnd_nexus implementation of BHND_BUS_GET_CHIPID().
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*/
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static const struct bhnd_chipid *
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bhnd_nexus_get_chipid(device_t dev, device_t child)
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{
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return (&bcm_get_platform()->cid);
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}
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/**
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* Default bhnd_nexus implementation of BHND_BUS_READ_BOARD_INFO().
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*/
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static int
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bhnd_nexus_read_board_info(device_t dev, device_t child,
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struct bhnd_board_info *info)
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{
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int error;
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/* Initialize with NVRAM-derived values */
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if ((error = bhnd_bus_generic_read_board_info(dev, child, info)))
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return (error);
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/* The board vendor should default to PCI_VENDOR_BROADCOM if not
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* otherwise specified */
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if (info->board_vendor == 0)
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info->board_vendor = PCI_VENDOR_BROADCOM;
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return (0);
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}
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/**
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* Default bhnd_nexus implementation of BHND_BUS_MAP_INTR().
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*/
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static int
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bhnd_nexus_map_intr(device_t dev, device_t child, u_int intr, rman_res_t *irq)
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{
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struct bcm_mips_intr_map_data *imd;
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u_int ivec;
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uintptr_t xref;
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int error;
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/* Fetch the backplane interrupt vector */
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if ((error = bhnd_get_intr_ivec(child, intr, &ivec))) {
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device_printf(dev, "error fetching ivec for intr %u: %d\n",
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intr, error);
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return (error);
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}
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/* Determine our interrupt domain */
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xref = BHND_BUS_GET_INTR_DOMAIN(dev, child, false);
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KASSERT(xref != 0, ("missing interrupt domain"));
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/* Allocate our map data */
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imd = (struct bcm_mips_intr_map_data *)intr_alloc_map_data(
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INTR_MAP_DATA_BCM_MIPS, sizeof(*imd), M_WAITOK | M_ZERO);
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imd->ivec = ivec;
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/* Map the IRQ */
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*irq = intr_map_irq(NULL, xref, &imd->mdata);
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return (0);
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}
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/**
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* Default bhnd_nexus implementation of BHND_BUS_UNMAP_INTR().
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*/
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static void
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bhnd_nexus_unmap_intr(device_t dev, device_t child, rman_res_t irq)
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{
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if (irq > UINT_MAX)
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panic("invalid irq: %ju", (uintmax_t)irq);
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intr_unmap_irq(irq);
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}
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/**
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* Default bhnd_nexus implementation of BHND_BUS_GET_DMA_TRANSLATION().
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*/
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static int
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bhnd_nexus_get_dma_translation(device_t dev, device_t child,
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u_int width, uint32_t flags, bus_dma_tag_t *dmat,
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struct bhnd_dma_translation *translation)
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{
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struct bcm_platform *bp = bcm_get_platform();
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/* We don't (currently) support any flags */
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if (flags != 0x0)
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return (ENOENT);
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KASSERT(width > 0 && width <= BHND_DMA_ADDR_64BIT,
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("invalid width %u", width));
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/* Is the requested width supported? */
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if (width > BHND_DMA_ADDR_32BIT) {
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/* Backplane must support 64-bit addressing */
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if (!(bp->cid.chip_caps & BHND_CAP_BP64))
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width = BHND_DMA_ADDR_32BIT;
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}
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/* No DMA address translation required */
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if (dmat != NULL)
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*dmat = bus_get_dma_tag(dev);
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if (translation != NULL) {
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*translation = (struct bhnd_dma_translation) {
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.base_addr = 0x0,
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.addr_mask = BHND_DMA_ADDR_BITMASK(width),
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.addrext_mask = 0
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};
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}
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return (0);
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}
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static device_method_t bhnd_nexus_methods[] = {
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/* bhnd interface */
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DEVMETHOD(bhnd_bus_get_service_registry,bhnd_nexus_get_service_registry),
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DEVMETHOD(bhnd_bus_register_provider, bhnd_bus_generic_sr_register_provider),
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DEVMETHOD(bhnd_bus_deregister_provider, bhnd_bus_generic_sr_deregister_provider),
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DEVMETHOD(bhnd_bus_retain_provider, bhnd_bus_generic_sr_retain_provider),
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DEVMETHOD(bhnd_bus_release_provider, bhnd_bus_generic_sr_release_provider),
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DEVMETHOD(bhnd_bus_activate_resource, bhnd_nexus_activate_resource),
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DEVMETHOD(bhnd_bus_deactivate_resource, bhnd_nexus_deactivate_resource),
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DEVMETHOD(bhnd_bus_is_hw_disabled, bhnd_nexus_is_hw_disabled),
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DEVMETHOD(bhnd_bus_get_attach_type, bhnd_nexus_get_attach_type),
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DEVMETHOD(bhnd_bus_get_chipid, bhnd_nexus_get_chipid),
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DEVMETHOD(bhnd_bus_get_dma_translation, bhnd_nexus_get_dma_translation),
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DEVMETHOD(bhnd_bus_get_intr_domain, bhnd_bus_generic_get_intr_domain),
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DEVMETHOD(bhnd_bus_map_intr, bhnd_nexus_map_intr),
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DEVMETHOD(bhnd_bus_read_board_info, bhnd_nexus_read_board_info),
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DEVMETHOD(bhnd_bus_unmap_intr, bhnd_nexus_unmap_intr),
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DEVMETHOD_END
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};
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DEFINE_CLASS_0(bhnd, bhnd_nexus_driver, bhnd_nexus_methods,
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sizeof(struct bhnd_softc));
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