177 lines
4.4 KiB
C
177 lines
4.4 KiB
C
/*-
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* Copyright (c) 2012 Semihalf.
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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 "opt_platform.h"
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#include <sys/cdefs.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/bus.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/proc.h>
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#include <sys/pcpu.h>
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#include <sys/sched.h>
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#include <machine/bus.h>
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#include <machine/tlb.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <powerpc/mpc85xx/mpc85xx.h>
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#include "bman.h"
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#include "portals.h"
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t_Handle bman_portal_setup(struct bman_softc *);
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struct dpaa_portals_softc *bp_sc;
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int
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bman_portals_attach(device_t dev)
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{
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struct dpaa_portals_softc *sc;
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sc = bp_sc = device_get_softc(dev);
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/* Map bman portal to physical address space */
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if (law_enable(OCP85XX_TGTIF_BMAN, sc->sc_dp_pa, sc->sc_dp_size)) {
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bman_portals_detach(dev);
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return (ENXIO);
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}
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/* Set portal properties for XX_VirtToPhys() */
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XX_PortalSetInfo(dev);
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return (bus_generic_attach(dev));
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}
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int
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bman_portals_detach(device_t dev)
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{
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struct dpaa_portals_softc *sc;
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int i;
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bp_sc = NULL;
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sc = device_get_softc(dev);
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for (i = 0; i < ARRAY_SIZE(sc->sc_dp); i++) {
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if (sc->sc_dp[i].dp_ph != NULL) {
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thread_lock(curthread);
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sched_bind(curthread, i);
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thread_unlock(curthread);
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BM_PORTAL_Free(sc->sc_dp[i].dp_ph);
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thread_lock(curthread);
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sched_unbind(curthread);
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thread_unlock(curthread);
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}
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if (sc->sc_dp[i].dp_ires != NULL) {
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XX_DeallocIntr((uintptr_t)sc->sc_dp[i].dp_ires);
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bus_release_resource(dev, SYS_RES_IRQ,
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sc->sc_dp[i].dp_irid, sc->sc_dp[i].dp_ires);
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}
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}
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for (i = 0; i < ARRAY_SIZE(sc->sc_rres); i++) {
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if (sc->sc_rres[i] != NULL)
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bus_release_resource(dev, SYS_RES_MEMORY,
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sc->sc_rrid[i],
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sc->sc_rres[i]);
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}
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return (0);
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}
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t_Handle
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bman_portal_setup(struct bman_softc *bsc)
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{
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struct dpaa_portals_softc *sc;
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t_BmPortalParam bpp;
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t_Handle portal;
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unsigned int cpu;
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uintptr_t p;
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/* Return NULL if we're not ready or while detach */
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if (bp_sc == NULL)
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return (NULL);
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sc = bp_sc;
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sched_pin();
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portal = NULL;
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cpu = PCPU_GET(cpuid);
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/* Check if portal is ready */
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while (atomic_cmpset_acq_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph,
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0, -1) == 0) {
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p = atomic_load_acq_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph);
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/* Return if portal is already initialized */
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if (p != 0 && p != -1) {
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sched_unpin();
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return ((t_Handle)p);
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}
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/* Not inititialized and "owned" by another thread */
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sched_relinquish(curthread);
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}
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/* Map portal registers */
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dpaa_portal_map_registers(sc);
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/* Configure and initialize portal */
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bpp.ceBaseAddress = rman_get_bushandle(sc->sc_rres[0]);
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bpp.ciBaseAddress = rman_get_bushandle(sc->sc_rres[1]);
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bpp.h_Bm = bsc->sc_bh;
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bpp.swPortalId = cpu;
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bpp.irq = (uintptr_t)sc->sc_dp[cpu].dp_ires;
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portal = BM_PORTAL_Config(&bpp);
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if (portal == NULL)
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goto err;
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if (BM_PORTAL_Init(portal) != E_OK)
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goto err;
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atomic_store_rel_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph, (uintptr_t)portal);
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sched_unpin();
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return (portal);
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err:
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if (portal != NULL)
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BM_PORTAL_Free(portal);
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atomic_store_rel_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph, 0);
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sched_unpin();
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return (NULL);
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}
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