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 FQMAN_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 EARLY_DRIVER_MODULE(qman, simplebus, qman_driver, qman_devclass, 0, 0,
  72     BUS_PASS_SUPPORTDEV);
  73
  74 static int
  75 qman_fdt_probe(device_t dev)
  76 {
  77
  78         if (!ofw_bus_is_compatible(dev, "fsl,qman"))
  79                 return (ENXIO);
  80
  81         device_set_desc(dev, FQMAN_DEVSTR);
  82
  83         return (BUS_PROBE_DEFAULT);
  84 }
  85
  86 /*
  87  * QMAN Portals
  88  */
  89 #define QMAN_PORT_DEVSTR        "Freescale Queue Manager - Portals"
  90
  91 static device_probe_t qman_portals_fdt_probe;
  92 static device_attach_t qman_portals_fdt_attach;
  93
  94 static device_method_t qm_portals_methods[] = {
  95         /* Device interface */
  96         DEVMETHOD(device_probe,         qman_portals_fdt_probe),
  97         DEVMETHOD(device_attach,        qman_portals_fdt_attach),
  98         DEVMETHOD(device_detach,        qman_portals_detach),
  99
 100         { 0, 0 }
 101 };
 102
 103 static driver_t qm_portals_driver = {
 104         "qman-portals",
 105         qm_portals_methods,
 106         sizeof(struct dpaa_portals_softc),
 107 };
 108
 109 static devclass_t qm_portals_devclass;
 110 EARLY_DRIVER_MODULE(qman_portals, ofwbus, qm_portals_driver,
 111     qm_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 qman_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,qman-portal"))
 132                                 break;
 133                 }
 134                 if (node <= 0)
 135                         return (ENXIO);
 136         } else if (!ofw_bus_is_compatible(dev, "fsl,qman-portals"))
 137                 return (ENXIO);
 138
 139         device_set_desc(dev, QMAN_PORT_DEVSTR);
 140
 141         return (BUS_PROBE_DEFAULT);
 142 }
 143
 144 static phandle_t
 145 qman_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 (-1);
 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 qman_portals_fdt_attach(device_t dev)
 165 {
 166         struct dpaa_portals_softc *sc;
 167         phandle_t node, child, cpu_node;
 168         vm_paddr_t portal_pa, portal_par_pa;
 169         vm_size_t portal_size;
 170         uint32_t addr, paddr, 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         cell_t *range;
 176         int nrange;
 177         int i;
 178
 179         cpus = 0;
 180         sc = device_get_softc(dev);
 181         sc->sc_dev = dev;
 182
 183         node = ofw_bus_get_node(dev);
 184
 185         /* Get this node's range */
 186         get_addr_props(ofw_bus_get_node(device_get_parent(dev)), &paddr, &size);
 187         get_addr_props(node, &addr, &size);
 188
 189         nrange = OF_getencprop_alloc_multi(node, "ranges",
 190             sizeof(*range), (void **)&range);
 191         if (nrange < addr + paddr + size)
 192                 return (ENXIO);
 193         portal_pa = portal_par_pa = 0;
 194         portal_size = 0;
 195         for (i = 0; i < addr; i++) {
 196                 portal_pa <<= 32;
 197                 portal_pa |= range[i];
 198         }
 199         for (; i < paddr + addr; i++) {
 200                 portal_par_pa <<= 32;
 201                 portal_par_pa |= range[i];
 202         }
 203         portal_pa += portal_par_pa;
 204         for (; i < size + paddr + addr; i++) {
 205                 portal_size = (uintmax_t)portal_size << 32;
 206                 portal_size |= range[i];
 207         }
 208         OF_prop_free(range);
 209         sc->sc_dp_size = portal_size;
 210         sc->sc_dp_pa = portal_pa;
 211
 212         /* Find portals tied to CPUs */
 213         for (child = OF_child(node); child != 0; child = OF_peer(child)) {
 214                 if (cpus >= mp_ncpus)
 215                         break;
 216                 if (!ofw_bus_node_is_compatible(child, "fsl,qman-portal")) {
 217                         continue;
 218                 }
 219                 /* Checkout related cpu */
 220                 if (OF_getprop(child, "cpu-handle", (void *)&cpu,
 221                     sizeof(cpu)) <= 0) {
 222                         cpu = qman_portal_find_cpu(cpus);
 223                         if (cpu <= 0)
 224                                 continue;
 225                 }
 226                 /* Acquire cpu number */
 227                 cpu_node = OF_instance_to_package(cpu);
 228                 if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) {
 229                         device_printf(dev, "Could not retrieve CPU number.\n");
 230                         return (ENXIO);
 231                 }
 232
 233                 cpus++;
 234
 235                 if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) {
 236                         device_printf(dev, "could not set up devinfo\n");
 237                         continue;
 238                 }
 239
 240                 resource_list_init(&di.di_res);
 241                 if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) {
 242                         device_printf(dev, "%s: could not process 'reg' "
 243                             "property\n", ofw_di.obd_name);
 244                         ofw_bus_gen_destroy_devinfo(&ofw_di);
 245                         continue;
 246                 }
 247                 if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) {
 248                         device_printf(dev, "%s: could not process "
 249                             "'interrupts' property\n", ofw_di.obd_name);
 250                         resource_list_free(&di.di_res);
 251                         ofw_bus_gen_destroy_devinfo(&ofw_di);
 252                         continue;
 253                 }
 254                 di.di_intr_rid = intr_rid;
 255
 256                 if (dpaa_portal_alloc_res(dev, &di, cpu_num))
 257                         goto err;
 258         }
 259
 260         ofw_bus_gen_destroy_devinfo(&ofw_di);
 261
 262         return (qman_portals_attach(dev));
 263 err:
 264         resource_list_free(&di.di_res);
 265         ofw_bus_gen_destroy_devinfo(&ofw_di);
 266         qman_portals_detach(dev);
 267         return (ENXIO);
 268 }