sys/dev/dpaa/qman_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 "qman.h"
  45 #include "portals.h"
  46
  47 #define FBMAN_DEVSTR    "Freescale Queue Manager"
  48
  49 static int qman_fdt_probe(device_t);
  50
  51 static device_method_t qman_methods[] = {
  52         /* Device interface */
  53         DEVMETHOD(device_probe,         qman_fdt_probe),
  54         DEVMETHOD(device_attach,        qman_attach),
  55         DEVMETHOD(device_detach,        qman_detach),
  56
  57         DEVMETHOD(device_suspend,       qman_suspend),
  58         DEVMETHOD(device_resume,        qman_resume),
  59         DEVMETHOD(device_shutdown,      qman_shutdown),
  60
  61         { 0, 0 }
  62 };
  63
  64 static driver_t qman_driver = {
  65         "qman",
  66         qman_methods,
  67         sizeof(struct qman_softc),
  68 };
  69
  70 static devclass_t qman_devclass;
  71 DRIVER_MODULE(qman, simplebus, qman_driver, qman_devclass, 0, 0);
  72
  73 static int
  74 qman_fdt_probe(device_t dev)
  75 {
  76
  77         if (!ofw_bus_is_compatible(dev, "fsl,qman"))
  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 Queue Manager - Portals"
  89
  90 static device_probe_t qman_portals_fdt_probe;
  91 static device_attach_t qman_portals_fdt_attach;
  92
  93 static device_method_t qm_portals_methods[] = {
  94         /* Device interface */
  95         DEVMETHOD(device_probe,         qman_portals_fdt_probe),
  96         DEVMETHOD(device_attach,        qman_portals_fdt_attach),
  97         DEVMETHOD(device_detach,        qman_portals_detach),
  98
  99         { 0, 0 }
 100 };
 101
 102 static driver_t qm_portals_driver = {
 103         "qman-portals",
 104         qm_portals_methods,
 105         sizeof(struct dpaa_portals_softc),
 106 };
 107
 108 static devclass_t qm_portals_devclass;
 109 EARLY_DRIVER_MODULE(qman_portals, ofwbus, qm_portals_driver,
 110     qm_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 qman_portals_fdt_probe(device_t dev)
 124 {
 125
 126         if (!ofw_bus_is_compatible(dev, "fsl,qman-portals"))
 127                 return (ENXIO);
 128
 129         device_set_desc(dev, BMAN_PORT_DEVSTR);
 130
 131         return (BUS_PROBE_DEFAULT);
 132 }
 133
 134 static phandle_t
 135 qman_portal_find_cpu(int cpu)
 136 {
 137         phandle_t node;
 138         pcell_t reg;
 139
 140         node = OF_finddevice("/cpus");
 141         if (node == -1)
 142                 return (-1);
 143
 144         for (node = OF_child(node); node != 0; node = OF_peer(node)) {
 145                 if (OF_getprop(node, "reg", &reg, sizeof(reg)) <= 0)
 146                         continue;
 147                 if (reg == cpu)
 148                         return (node);
 149         }
 150         return (-1);
 151 }
 152
 153 static int
 154 qman_portals_fdt_attach(device_t dev)
 155 {
 156         struct dpaa_portals_softc *sc;
 157         phandle_t node, child, cpu_node;
 158         vm_paddr_t portal_pa, portal_par_pa;
 159         vm_size_t portal_size;
 160         uint32_t addr, paddr, size;
 161         ihandle_t cpu;
 162         int cpu_num, cpus, intr_rid;
 163         struct dpaa_portals_devinfo di;
 164         struct ofw_bus_devinfo ofw_di = {};
 165         cell_t *range;
 166         int nrange;
 167         int i;
 168
 169         cpus = 0;
 170         sc = device_get_softc(dev);
 171         sc->sc_dev = dev;
 172
 173         node = ofw_bus_get_node(dev);
 174
 175         /* Get this node's range */
 176         get_addr_props(ofw_bus_get_node(device_get_parent(dev)), &paddr, &size);
 177         get_addr_props(node, &addr, &size);
 178
 179         nrange = OF_getencprop_alloc(node, "ranges",
 180             sizeof(*range), (void **)&range);
 181         if (nrange < addr + paddr + size)
 182                 return (ENXIO);
 183         portal_pa = portal_par_pa = 0;
 184         portal_size = 0;
 185         for (i = 0; i < addr; i++) {
 186                 portal_pa <<= 32;
 187                 portal_pa |= range[i];
 188         }
 189         for (; i < paddr + addr; i++) {
 190                 portal_par_pa <<= 32;
 191                 portal_par_pa |= range[i];
 192         }
 193         portal_pa += portal_par_pa;
 194         for (; i < size + paddr + addr; i++) {
 195                 portal_size = (uintmax_t)portal_size << 32;
 196                 portal_size |= range[i];
 197         }
 198         OF_prop_free(range);
 199         sc->sc_dp_size = portal_size;
 200         sc->sc_dp_pa = portal_pa;
 201
 202         /* Find portals tied to CPUs */
 203         for (child = OF_child(node); child != 0; child = OF_peer(child)) {
 204                 if (cpus >= mp_ncpus)
 205                         break;
 206                 if (!ofw_bus_node_is_compatible(child, "fsl,qman-portal")) {
 207                         continue;
 208                 }
 209                 /* Checkout related cpu */
 210                 if (OF_getprop(child, "cpu-handle", (void *)&cpu,
 211                     sizeof(cpu)) <= 0) {
 212                         cpu = qman_portal_find_cpu(cpus);
 213                         if (cpu <= 0)
 214                                 continue;
 215                 }
 216                 /* Acquire cpu number */
 217                 cpu_node = OF_instance_to_package(cpu);
 218                 if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) {
 219                         device_printf(dev, "Could not retrieve CPU number.\n");
 220                         return (ENXIO);
 221                 }
 222
 223                 cpus++;
 224
 225                 if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) {
 226                         device_printf(dev, "could not set up devinfo\n");
 227                         continue;
 228                 }
 229
 230                 resource_list_init(&di.di_res);
 231                 if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) {
 232                         device_printf(dev, "%s: could not process 'reg' "
 233                             "property\n", ofw_di.obd_name);
 234                         ofw_bus_gen_destroy_devinfo(&ofw_di);
 235                         continue;
 236                 }
 237                 if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) {
 238                         device_printf(dev, "%s: could not process "
 239                             "'interrupts' property\n", ofw_di.obd_name);
 240                         resource_list_free(&di.di_res);
 241                         ofw_bus_gen_destroy_devinfo(&ofw_di);
 242                         continue;
 243                 }
 244                 di.di_intr_rid = intr_rid;
 245
 246                 if (dpaa_portal_alloc_res(dev, &di, cpu_num))
 247                         goto err;
 248         }
 249
 250         ofw_bus_gen_destroy_devinfo(&ofw_di);
 251
 252         return (qman_portals_attach(dev));
 253 err:
 254         resource_list_free(&di.di_res);
 255         ofw_bus_gen_destroy_devinfo(&ofw_di);
 256         qman_portals_detach(dev);
 257         return (ENXIO);
 258 }