qman_fdt.c

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    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 EARLY_DRIVER_MODULE(qman, simplebus, qman_driver, 0, 0, BUS_PASS_SUPPORTDEV);
   71 
   72 static int
   73 qman_fdt_probe(device_t dev)
   74 {
   75 
   76         if (!ofw_bus_is_compatible(dev, "fsl,qman"))
   77                 return (ENXIO);
   78 
   79         device_set_desc(dev, FQMAN_DEVSTR);
   80 
   81         return (BUS_PROBE_DEFAULT);
   82 }
   83 
   84 /*
   85  * QMAN Portals
   86  */
   87 #define QMAN_PORT_DEVSTR        "Freescale Queue Manager - Portals"
   88 
   89 static device_probe_t qman_portals_fdt_probe;
   90 static device_attach_t qman_portals_fdt_attach;
   91 
   92 static device_method_t qm_portals_methods[] = {
   93         /* Device interface */
   94         DEVMETHOD(device_probe,         qman_portals_fdt_probe),
   95         DEVMETHOD(device_attach,        qman_portals_fdt_attach),
   96         DEVMETHOD(device_detach,        qman_portals_detach),
   97 
   98         { 0, 0 }
   99 };
  100 
  101 static driver_t qm_portals_driver = {
  102         "qman-portals",
  103         qm_portals_methods,
  104         sizeof(struct dpaa_portals_softc),
  105 };
  106 
  107 EARLY_DRIVER_MODULE(qman_portals, ofwbus, qm_portals_driver, 0, 0,
  108     BUS_PASS_BUS);
  109 
  110 static void
  111 get_addr_props(phandle_t node, uint32_t *addrp, uint32_t *sizep)
  112 {
  113 
  114         *addrp = 2;
  115         *sizep = 1;
  116         OF_getencprop(node, "#address-cells", addrp, sizeof(*addrp));
  117         OF_getencprop(node, "#size-cells", sizep, sizeof(*sizep));
  118 }
  119 
  120 static int
  121 qman_portals_fdt_probe(device_t dev)
  122 {
  123         phandle_t node;
  124 
  125         if (ofw_bus_is_compatible(dev, "simple-bus")) {
  126                 node = ofw_bus_get_node(dev);
  127                 for (node = OF_child(node); node > 0; node = OF_peer(node)) {
  128                         if (ofw_bus_node_is_compatible(node, "fsl,qman-portal"))
  129                                 break;
  130                 }
  131                 if (node <= 0)
  132                         return (ENXIO);
  133         } else if (!ofw_bus_is_compatible(dev, "fsl,qman-portals"))
  134                 return (ENXIO);
  135 
  136         device_set_desc(dev, QMAN_PORT_DEVSTR);
  137 
  138         return (BUS_PROBE_DEFAULT);
  139 }
  140 
  141 static phandle_t
  142 qman_portal_find_cpu(int cpu)
  143 {
  144         phandle_t node;
  145         pcell_t reg;
  146 
  147         node = OF_finddevice("/cpus");
  148         if (node == -1)
  149                 return (-1);
  150 
  151         for (node = OF_child(node); node != 0; node = OF_peer(node)) {
  152                 if (OF_getprop(node, "reg", &reg, sizeof(reg)) <= 0)
  153                         continue;
  154                 if (reg == cpu)
  155                         return (node);
  156         }
  157         return (-1);
  158 }
  159 
  160 static int
  161 qman_portals_fdt_attach(device_t dev)
  162 {
  163         struct dpaa_portals_softc *sc;
  164         phandle_t node, child, cpu_node;
  165         vm_paddr_t portal_pa, portal_par_pa;
  166         vm_size_t portal_size;
  167         uint32_t addr, paddr, size;
  168         ihandle_t cpu;
  169         int cpu_num, cpus, intr_rid;
  170         struct dpaa_portals_devinfo di;
  171         struct ofw_bus_devinfo ofw_di = {};
  172         cell_t *range;
  173         int nrange;
  174         int i;
  175 
  176         cpus = 0;
  177         sc = device_get_softc(dev);
  178         sc->sc_dev = dev;
  179 
  180         node = ofw_bus_get_node(dev);
  181 
  182         /* Get this node's range */
  183         get_addr_props(ofw_bus_get_node(device_get_parent(dev)), &paddr, &size);
  184         get_addr_props(node, &addr, &size);
  185 
  186         nrange = OF_getencprop_alloc_multi(node, "ranges",
  187             sizeof(*range), (void **)&range);
  188         if (nrange < addr + paddr + size)
  189                 return (ENXIO);
  190         portal_pa = portal_par_pa = 0;
  191         portal_size = 0;
  192         for (i = 0; i < addr; i++) {
  193                 portal_pa <<= 32;
  194                 portal_pa |= range[i];
  195         }
  196         for (; i < paddr + addr; i++) {
  197                 portal_par_pa <<= 32;
  198                 portal_par_pa |= range[i];
  199         }
  200         portal_pa += portal_par_pa;
  201         for (; i < size + paddr + addr; i++) {
  202                 portal_size = (uintmax_t)portal_size << 32;
  203                 portal_size |= range[i];
  204         }
  205         OF_prop_free(range);
  206         sc->sc_dp_size = portal_size;
  207         sc->sc_dp_pa = portal_pa;
  208 
  209         /* Find portals tied to CPUs */
  210         for (child = OF_child(node); child != 0; child = OF_peer(child)) {
  211                 if (cpus >= mp_ncpus)
  212                         break;
  213                 if (!ofw_bus_node_is_compatible(child, "fsl,qman-portal")) {
  214                         continue;
  215                 }
  216                 /* Checkout related cpu */
  217                 if (OF_getprop(child, "cpu-handle", (void *)&cpu,
  218                     sizeof(cpu)) <= 0) {
  219                         cpu = qman_portal_find_cpu(cpus);
  220                         if (cpu <= 0)
  221                                 continue;
  222                 }
  223                 /* Acquire cpu number */
  224                 cpu_node = OF_instance_to_package(cpu);
  225                 if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) {
  226                         device_printf(dev, "Could not retrieve CPU number.\n");
  227                         return (ENXIO);
  228                 }
  229 
  230                 cpus++;
  231 
  232                 if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) {
  233                         device_printf(dev, "could not set up devinfo\n");
  234                         continue;
  235                 }
  236 
  237                 resource_list_init(&di.di_res);
  238                 if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) {
  239                         device_printf(dev, "%s: could not process 'reg' "
  240                             "property\n", ofw_di.obd_name);
  241                         ofw_bus_gen_destroy_devinfo(&ofw_di);
  242                         continue;
  243                 }
  244                 if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) {
  245                         device_printf(dev, "%s: could not process "
  246                             "'interrupts' property\n", ofw_di.obd_name);
  247                         resource_list_free(&di.di_res);
  248                         ofw_bus_gen_destroy_devinfo(&ofw_di);
  249                         continue;
  250                 }
  251                 di.di_intr_rid = intr_rid;
  252 
  253                 if (dpaa_portal_alloc_res(dev, &di, cpu_num))
  254                         goto err;
  255         }
  256 
  257         ofw_bus_gen_destroy_devinfo(&ofw_di);
  258 
  259         return (qman_portals_attach(dev));
  260 err:
  261         resource_list_free(&di.di_res);
  262         ofw_bus_gen_destroy_devinfo(&ofw_di);
  263         qman_portals_detach(dev);
  264         return (ENXIO);
  265 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/dpaa/qman_fdt.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/dpaa/qman_fdt.c