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: releng/12.0/sys/dev/dpaa/bman_fdt.c 326840 2017-12-14 04:41:07Z jhibbits $");
   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 }

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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