1 /*- 2 * Copyright (c) 2012 Semihalf. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include "opt_platform.h" 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/bus.h> 35 #include <sys/lock.h> 36 #include <sys/module.h> 37 #include <sys/mutex.h> 38 #include <sys/proc.h> 39 #include <sys/pcpu.h> 40 #include <sys/sched.h> 41 42 #include <machine/bus.h> 43 #include <machine/tlb.h> 44 45 #include <dev/ofw/ofw_bus.h> 46 #include <dev/ofw/ofw_bus_subr.h> 47 48 #include <powerpc/mpc85xx/mpc85xx.h> 49 50 #include "bman.h" 51 #include "portals.h" 52 53 t_Handle bman_portal_setup(struct bman_softc *); 54 55 struct dpaa_portals_softc *bp_sc; 56 57 int 58 bman_portals_attach(device_t dev) 59 { 60 struct dpaa_portals_softc *sc; 61 62 sc = bp_sc = device_get_softc(dev); 63 64 /* Map bman portal to physical address space */ 65 if (law_enable(OCP85XX_TGTIF_BMAN, sc->sc_dp_pa, sc->sc_dp_size)) { 66 bman_portals_detach(dev); 67 return (ENXIO); 68 } 69 /* Set portal properties for XX_VirtToPhys() */ 70 XX_PortalSetInfo(dev); 71 72 return (bus_generic_attach(dev)); 73 } 74 75 int 76 bman_portals_detach(device_t dev) 77 { 78 struct dpaa_portals_softc *sc; 79 int i; 80 81 bp_sc = NULL; 82 sc = device_get_softc(dev); 83 84 for (i = 0; i < ARRAY_SIZE(sc->sc_dp); i++) { 85 if (sc->sc_dp[i].dp_ph != NULL) { 86 thread_lock(curthread); 87 sched_bind(curthread, i); 88 thread_unlock(curthread); 89 90 BM_PORTAL_Free(sc->sc_dp[i].dp_ph); 91 92 thread_lock(curthread); 93 sched_unbind(curthread); 94 thread_unlock(curthread); 95 } 96 97 if (sc->sc_dp[i].dp_ires != NULL) { 98 XX_DeallocIntr((uintptr_t)sc->sc_dp[i].dp_ires); 99 bus_release_resource(dev, SYS_RES_IRQ, 100 sc->sc_dp[i].dp_irid, sc->sc_dp[i].dp_ires); 101 } 102 } 103 for (i = 0; i < ARRAY_SIZE(sc->sc_rres); i++) { 104 if (sc->sc_rres[i] != NULL) 105 bus_release_resource(dev, SYS_RES_MEMORY, 106 sc->sc_rrid[i], 107 sc->sc_rres[i]); 108 } 109 110 return (0); 111 } 112 113 t_Handle 114 bman_portal_setup(struct bman_softc *bsc) 115 { 116 struct dpaa_portals_softc *sc; 117 t_BmPortalParam bpp; 118 t_Handle portal; 119 unsigned int cpu; 120 uintptr_t p; 121 122 /* Return NULL if we're not ready or while detach */ 123 if (bp_sc == NULL) 124 return (NULL); 125 126 sc = bp_sc; 127 128 sched_pin(); 129 portal = NULL; 130 cpu = PCPU_GET(cpuid); 131 132 /* Check if portal is ready */ 133 while (atomic_cmpset_acq_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph, 134 0, -1) == 0) { 135 p = atomic_load_acq_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph); 136 137 /* Return if portal is already initialized */ 138 if (p != 0 && p != -1) { 139 sched_unpin(); 140 return ((t_Handle)p); 141 } 142 143 /* Not inititialized and "owned" by another thread */ 144 sched_relinquish(curthread); 145 } 146 147 /* Map portal registers */ 148 dpaa_portal_map_registers(sc); 149 150 /* Configure and initialize portal */ 151 bpp.ceBaseAddress = rman_get_bushandle(sc->sc_rres[0]); 152 bpp.ciBaseAddress = rman_get_bushandle(sc->sc_rres[1]); 153 bpp.h_Bm = bsc->sc_bh; 154 bpp.swPortalId = cpu; 155 bpp.irq = (uintptr_t)sc->sc_dp[cpu].dp_ires; 156 157 portal = BM_PORTAL_Config(&bpp); 158 if (portal == NULL) 159 goto err; 160 161 if (BM_PORTAL_Init(portal) != E_OK) 162 goto err; 163 164 atomic_store_rel_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph, (uintptr_t)portal); 165 166 sched_unpin(); 167 168 return (portal); 169 170 err: 171 if (portal != NULL) 172 BM_PORTAL_Free(portal); 173 174 atomic_store_rel_ptr((uintptr_t *)&sc->sc_dp[cpu].dp_ph, 0); 175 sched_unpin(); 176 177 return (NULL); 178 } 179