bman_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 "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 EARLY_DRIVER_MODULE(bman, simplebus, bman_driver, 0, 0, BUS_PASS_SUPPORTDEV);
   71 
   72 static int
   73 bman_fdt_probe(device_t dev)
   74 {
   75 
   76         if (!ofw_bus_is_compatible(dev, "fsl,bman"))
   77                 return (ENXIO);
   78 
   79         device_set_desc(dev, FBMAN_DEVSTR);
   80 
   81         return (BUS_PROBE_DEFAULT);
   82 }
   83 
   84 /*
   85  * BMAN Portals
   86  */
   87 #define BMAN_PORT_DEVSTR        "Freescale Buffer Manager - Portals"
   88 
   89 static device_probe_t bman_portals_fdt_probe;
   90 static device_attach_t bman_portals_fdt_attach;
   91 
   92 static device_method_t bm_portals_methods[] = {
   93         /* Device interface */
   94         DEVMETHOD(device_probe,         bman_portals_fdt_probe),
   95         DEVMETHOD(device_attach,        bman_portals_fdt_attach),
   96         DEVMETHOD(device_detach,        bman_portals_detach),
   97 
   98         { 0, 0 }
   99 };
  100 
  101 static driver_t bm_portals_driver = {
  102         "bman-portals",
  103         bm_portals_methods,
  104         sizeof(struct dpaa_portals_softc),
  105 };
  106 
  107 EARLY_DRIVER_MODULE(bman_portals, ofwbus, bm_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 bman_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,bman-portal"))
  129                                 break;
  130                 }
  131                 if (node <= 0)
  132                         return (ENXIO);
  133         } else if (!ofw_bus_is_compatible(dev, "fsl,bman-portals"))
  134                 return (ENXIO);
  135 
  136         device_set_desc(dev, BMAN_PORT_DEVSTR);
  137 
  138         return (BUS_PROBE_DEFAULT);
  139 }
  140 
  141 static phandle_t
  142 bman_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 (node);
  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 bman_portals_fdt_attach(device_t dev)
  162 {
  163         struct dpaa_portals_softc *sc;
  164         struct resource_list_entry *rle;
  165         phandle_t node, child, cpu_node;
  166         vm_paddr_t portal_pa;
  167         vm_size_t portal_size;
  168         uint32_t addr, size;
  169         ihandle_t cpu;
  170         int cpu_num, cpus, intr_rid;
  171         struct dpaa_portals_devinfo di;
  172         struct ofw_bus_devinfo ofw_di = {};
  173 
  174         cpus = 0;
  175         sc = device_get_softc(dev);
  176         sc->sc_dev = dev;
  177 
  178         node = ofw_bus_get_node(dev);
  179         get_addr_props(node, &addr, &size);
  180 
  181         /* Find portals tied to CPUs */
  182         for (child = OF_child(node); child != 0; child = OF_peer(child)) {
  183                 if (cpus >= mp_ncpus)
  184                         break;
  185                 if (!ofw_bus_node_is_compatible(child, "fsl,bman-portal")) {
  186                         continue;
  187                 }
  188                 /* Checkout related cpu */
  189                 if (OF_getprop(child, "cpu-handle", (void *)&cpu,
  190                     sizeof(cpu)) <= 0) {
  191                         cpu = bman_portal_find_cpu(cpus);
  192                         if (cpu <= 0)
  193                                 continue;
  194                 }
  195                 /* Acquire cpu number */
  196                 cpu_node = OF_instance_to_package(cpu);
  197                 if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) {
  198                         device_printf(dev, "Could not retrieve CPU number.\n");
  199                         return (ENXIO);
  200                 }
  201 
  202                 cpus++;
  203 
  204                 if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) {
  205                         device_printf(dev, "could not set up devinfo\n");
  206                         continue;
  207                 }
  208 
  209                 resource_list_init(&di.di_res);
  210                 if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) {
  211                         device_printf(dev, "%s: could not process 'reg' "
  212                             "property\n", ofw_di.obd_name);
  213                         ofw_bus_gen_destroy_devinfo(&ofw_di);
  214                         continue;
  215                 }
  216                 if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) {
  217                         device_printf(dev, "%s: could not process "
  218                             "'interrupts' property\n", ofw_di.obd_name);
  219                         resource_list_free(&di.di_res);
  220                         ofw_bus_gen_destroy_devinfo(&ofw_di);
  221                         continue;
  222                 }
  223                 di.di_intr_rid = intr_rid;
  224                 
  225                 ofw_reg_to_paddr(child, 0, &portal_pa, &portal_size, NULL);
  226                 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 0);
  227 
  228                 if (sc->sc_dp_pa == 0)
  229                         sc->sc_dp_pa = portal_pa - rle->start;
  230 
  231                 portal_size = rle->end + 1;
  232                 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 1);
  233                 portal_size = ulmax(rle->end + 1, portal_size);
  234                 sc->sc_dp_size = ulmax(sc->sc_dp_size, portal_size);
  235 
  236                 if (dpaa_portal_alloc_res(dev, &di, cpu_num))
  237                         goto err;
  238         }
  239 
  240         ofw_bus_gen_destroy_devinfo(&ofw_di);
  241 
  242         return (bman_portals_attach(dev));
  243 err:
  244         resource_list_free(&di.di_res);
  245         ofw_bus_gen_destroy_devinfo(&ofw_di);
  246         bman_portals_detach(dev);
  247         return (ENXIO);
  248 }

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

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