sys/dev/dpaa/bman_fdt.c

   1 /*-
   2  * Copyright (c) 2011-2012 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/module.h>
  36 #include <sys/smp.h>
  37
  38 #include <machine/bus.h>
  39
  40 #include <dev/ofw/ofw_bus.h>
  41 #include <dev/ofw/ofw_bus_subr.h>
  42 #include <dev/ofw/ofw_subr.h>
  43
  44 #include "bman.h"
  45 #include "portals.h"
  46
  47 #define FBMAN_DEVSTR    "Freescale Buffer Manager"
  48
  49 static int bman_fdt_probe(device_t);
  50
  51 static device_method_t bman_methods[] = {
  52         /* Device interface */
  53         DEVMETHOD(device_probe,         bman_fdt_probe),
  54         DEVMETHOD(device_attach,        bman_attach),
  55         DEVMETHOD(device_detach,        bman_detach),
  56
  57         DEVMETHOD(device_suspend,       bman_suspend),
  58         DEVMETHOD(device_resume,        bman_resume),
  59         DEVMETHOD(device_shutdown,      bman_shutdown),
  60
  61         { 0, 0 }
  62 };
  63
  64 static driver_t bman_driver = {
  65         "bman",
  66         bman_methods,
  67         sizeof(struct bman_softc),
  68 };
  69
  70 static devclass_t bman_devclass;
  71 EARLY_DRIVER_MODULE(bman, simplebus, bman_driver, bman_devclass, 0, 0,
  72     BUS_PASS_SUPPORTDEV);
  73
  74 static int
  75 bman_fdt_probe(device_t dev)
  76 {
  77
  78         if (!ofw_bus_is_compatible(dev, "fsl,bman"))
  79                 return (ENXIO);
  80
  81         device_set_desc(dev, FBMAN_DEVSTR);
  82
  83         return (BUS_PROBE_DEFAULT);
  84 }
  85
  86 /*
  87  * BMAN Portals
  88  */
  89 #define BMAN_PORT_DEVSTR        "Freescale Buffer Manager - Portals"
  90
  91 static device_probe_t bman_portals_fdt_probe;
  92 static device_attach_t bman_portals_fdt_attach;
  93
  94 static device_method_t bm_portals_methods[] = {
  95         /* Device interface */
  96         DEVMETHOD(device_probe,         bman_portals_fdt_probe),
  97         DEVMETHOD(device_attach,        bman_portals_fdt_attach),
  98         DEVMETHOD(device_detach,        bman_portals_detach),
  99
 100         { 0, 0 }
 101 };
 102
 103 static driver_t bm_portals_driver = {
 104         "bman-portals",
 105         bm_portals_methods,
 106         sizeof(struct dpaa_portals_softc),
 107 };
 108
 109 static devclass_t bm_portals_devclass;
 110 EARLY_DRIVER_MODULE(bman_portals, ofwbus, bm_portals_driver,
 111     bm_portals_devclass, 0, 0, BUS_PASS_BUS);
 112
 113 static void
 114 get_addr_props(phandle_t node, uint32_t *addrp, uint32_t *sizep)
 115 {
 116
 117         *addrp = 2;
 118         *sizep = 1;
 119         OF_getencprop(node, "#address-cells", addrp, sizeof(*addrp));
 120         OF_getencprop(node, "#size-cells", sizep, sizeof(*sizep));
 121 }
 122
 123 static int
 124 bman_portals_fdt_probe(device_t dev)
 125 {
 126         phandle_t node;
 127
 128         if (ofw_bus_is_compatible(dev, "simple-bus")) {
 129                 node = ofw_bus_get_node(dev);
 130                 for (node = OF_child(node); node > 0; node = OF_peer(node)) {
 131                         if (ofw_bus_node_is_compatible(node, "fsl,bman-portal"))
 132                                 break;
 133                 }
 134                 if (node <= 0)
 135                         return (ENXIO);
 136         } else if (!ofw_bus_is_compatible(dev, "fsl,bman-portals"))
 137                 return (ENXIO);
 138
 139         device_set_desc(dev, BMAN_PORT_DEVSTR);
 140
 141         return (BUS_PROBE_DEFAULT);
 142 }
 143
 144 static phandle_t
 145 bman_portal_find_cpu(int cpu)
 146 {
 147         phandle_t node;
 148         pcell_t reg;
 149
 150         node = OF_finddevice("/cpus");
 151         if (node == -1)
 152                 return (node);
 153
 154         for (node = OF_child(node); node != 0; node = OF_peer(node)) {
 155                 if (OF_getprop(node, "reg", &reg, sizeof(reg)) <= 0)
 156                         continue;
 157                 if (reg == cpu)
 158                         return (node);
 159         }
 160         return (-1);
 161 }
 162
 163 static int
 164 bman_portals_fdt_attach(device_t dev)
 165 {
 166         struct dpaa_portals_softc *sc;
 167         struct resource_list_entry *rle;
 168         phandle_t node, child, cpu_node;
 169         vm_paddr_t portal_pa;
 170         vm_size_t portal_size;
 171         uint32_t addr, size;
 172         ihandle_t cpu;
 173         int cpu_num, cpus, intr_rid;
 174         struct dpaa_portals_devinfo di;
 175         struct ofw_bus_devinfo ofw_di = {};
 176
 177         cpus = 0;
 178         sc = device_get_softc(dev);
 179         sc->sc_dev = dev;
 180
 181         node = ofw_bus_get_node(dev);
 182         get_addr_props(node, &addr, &size);
 183
 184         /* Find portals tied to CPUs */
 185         for (child = OF_child(node); child != 0; child = OF_peer(child)) {
 186                 if (cpus >= mp_ncpus)
 187                         break;
 188                 if (!ofw_bus_node_is_compatible(child, "fsl,bman-portal")) {
 189                         continue;
 190                 }
 191                 /* Checkout related cpu */
 192                 if (OF_getprop(child, "cpu-handle", (void *)&cpu,
 193                     sizeof(cpu)) <= 0) {
 194                         cpu = bman_portal_find_cpu(cpus);
 195                         if (cpu <= 0)
 196                                 continue;
 197                 }
 198                 /* Acquire cpu number */
 199                 cpu_node = OF_instance_to_package(cpu);
 200                 if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) {
 201                         device_printf(dev, "Could not retrieve CPU number.\n");
 202                         return (ENXIO);
 203                 }
 204
 205                 cpus++;
 206
 207                 if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) {
 208                         device_printf(dev, "could not set up devinfo\n");
 209                         continue;
 210                 }
 211
 212                 resource_list_init(&di.di_res);
 213                 if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) {
 214                         device_printf(dev, "%s: could not process 'reg' "
 215                             "property\n", ofw_di.obd_name);
 216                         ofw_bus_gen_destroy_devinfo(&ofw_di);
 217                         continue;
 218                 }
 219                 if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) {
 220                         device_printf(dev, "%s: could not process "
 221                             "'interrupts' property\n", ofw_di.obd_name);
 222                         resource_list_free(&di.di_res);
 223                         ofw_bus_gen_destroy_devinfo(&ofw_di);
 224                         continue;
 225                 }
 226                 di.di_intr_rid = intr_rid;
 227
 228                 ofw_reg_to_paddr(child, 0, &portal_pa, &portal_size, NULL);
 229                 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 0);
 230
 231                 if (sc->sc_dp_pa == 0)
 232                         sc->sc_dp_pa = portal_pa - rle->start;
 233
 234                 portal_size = rle->end + 1;
 235                 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 1);
 236                 portal_size = ulmax(rle->end + 1, portal_size);
 237                 sc->sc_dp_size = ulmax(sc->sc_dp_size, portal_size);
 238
 239                 if (dpaa_portal_alloc_res(dev, &di, cpu_num))
 240                         goto err;
 241         }
 242
 243         ofw_bus_gen_destroy_devinfo(&ofw_di);
 244
 245         return (bman_portals_attach(dev));
 246 err:
 247         resource_list_free(&di.di_res);
 248         ofw_bus_gen_destroy_devinfo(&ofw_di);
 249         bman_portals_detach(dev);
 250         return (ENXIO);
 251 }