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