3c22d78997
The BMan softc must exist when dtsec devices are created, else a NULL pointer is dereferenced. QMan likely as well. Until now, we have relied on order within the fdt parsing to attach correctly, but this obviously is not foolproof. Mark these as BUS_PASS_SUPPORTDEV so they're probed and attached explicitly before dtsec devices.
252 lines
6.5 KiB
C
252 lines
6.5 KiB
C
/*-
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* Copyright (c) 2011-2012 Semihalf.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "opt_platform.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <sys/smp.h>
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#include <machine/bus.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/ofw/ofw_subr.h>
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#include "bman.h"
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#include "portals.h"
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#define FBMAN_DEVSTR "Freescale Buffer Manager"
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static int bman_fdt_probe(device_t);
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static device_method_t bman_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, bman_fdt_probe),
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DEVMETHOD(device_attach, bman_attach),
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DEVMETHOD(device_detach, bman_detach),
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DEVMETHOD(device_suspend, bman_suspend),
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DEVMETHOD(device_resume, bman_resume),
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DEVMETHOD(device_shutdown, bman_shutdown),
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{ 0, 0 }
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};
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static driver_t bman_driver = {
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"bman",
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bman_methods,
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sizeof(struct bman_softc),
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};
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static devclass_t bman_devclass;
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EARLY_DRIVER_MODULE(bman, simplebus, bman_driver, bman_devclass, 0, 0,
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BUS_PASS_SUPPORTDEV);
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static int
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bman_fdt_probe(device_t dev)
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{
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if (!ofw_bus_is_compatible(dev, "fsl,bman"))
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return (ENXIO);
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device_set_desc(dev, FBMAN_DEVSTR);
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return (BUS_PROBE_DEFAULT);
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}
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/*
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* BMAN Portals
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*/
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#define BMAN_PORT_DEVSTR "Freescale Buffer Manager - Portals"
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static device_probe_t bman_portals_fdt_probe;
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static device_attach_t bman_portals_fdt_attach;
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static device_method_t bm_portals_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, bman_portals_fdt_probe),
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DEVMETHOD(device_attach, bman_portals_fdt_attach),
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DEVMETHOD(device_detach, bman_portals_detach),
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{ 0, 0 }
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};
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static driver_t bm_portals_driver = {
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"bman-portals",
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bm_portals_methods,
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sizeof(struct dpaa_portals_softc),
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};
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static devclass_t bm_portals_devclass;
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EARLY_DRIVER_MODULE(bman_portals, ofwbus, bm_portals_driver,
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bm_portals_devclass, 0, 0, BUS_PASS_BUS);
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static void
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get_addr_props(phandle_t node, uint32_t *addrp, uint32_t *sizep)
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{
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*addrp = 2;
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*sizep = 1;
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OF_getencprop(node, "#address-cells", addrp, sizeof(*addrp));
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OF_getencprop(node, "#size-cells", sizep, sizeof(*sizep));
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}
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static int
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bman_portals_fdt_probe(device_t dev)
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{
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phandle_t node;
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if (ofw_bus_is_compatible(dev, "simple-bus")) {
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node = ofw_bus_get_node(dev);
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for (node = OF_child(node); node > 0; node = OF_peer(node)) {
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if (ofw_bus_node_is_compatible(node, "fsl,bman-portal"))
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break;
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}
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if (node <= 0)
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return (ENXIO);
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} else if (!ofw_bus_is_compatible(dev, "fsl,bman-portals"))
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return (ENXIO);
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device_set_desc(dev, BMAN_PORT_DEVSTR);
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return (BUS_PROBE_DEFAULT);
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}
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static phandle_t
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bman_portal_find_cpu(int cpu)
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{
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phandle_t node;
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pcell_t reg;
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node = OF_finddevice("/cpus");
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if (node == -1)
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return (node);
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for (node = OF_child(node); node != 0; node = OF_peer(node)) {
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if (OF_getprop(node, "reg", ®, sizeof(reg)) <= 0)
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continue;
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if (reg == cpu)
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return (node);
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}
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return (-1);
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}
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static int
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bman_portals_fdt_attach(device_t dev)
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{
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struct dpaa_portals_softc *sc;
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struct resource_list_entry *rle;
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phandle_t node, child, cpu_node;
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vm_paddr_t portal_pa;
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vm_size_t portal_size;
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uint32_t addr, size;
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ihandle_t cpu;
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int cpu_num, cpus, intr_rid;
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struct dpaa_portals_devinfo di;
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struct ofw_bus_devinfo ofw_di = {};
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cpus = 0;
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sc = device_get_softc(dev);
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sc->sc_dev = dev;
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node = ofw_bus_get_node(dev);
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get_addr_props(node, &addr, &size);
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/* Find portals tied to CPUs */
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for (child = OF_child(node); child != 0; child = OF_peer(child)) {
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if (cpus >= mp_ncpus)
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break;
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if (!ofw_bus_node_is_compatible(child, "fsl,bman-portal")) {
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continue;
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}
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/* Checkout related cpu */
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if (OF_getprop(child, "cpu-handle", (void *)&cpu,
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sizeof(cpu)) <= 0) {
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cpu = bman_portal_find_cpu(cpus);
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if (cpu <= 0)
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continue;
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}
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/* Acquire cpu number */
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cpu_node = OF_instance_to_package(cpu);
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if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) {
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device_printf(dev, "Could not retrieve CPU number.\n");
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return (ENXIO);
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}
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cpus++;
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if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) {
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device_printf(dev, "could not set up devinfo\n");
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continue;
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}
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resource_list_init(&di.di_res);
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if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) {
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device_printf(dev, "%s: could not process 'reg' "
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"property\n", ofw_di.obd_name);
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ofw_bus_gen_destroy_devinfo(&ofw_di);
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continue;
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}
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if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) {
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device_printf(dev, "%s: could not process "
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"'interrupts' property\n", ofw_di.obd_name);
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resource_list_free(&di.di_res);
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ofw_bus_gen_destroy_devinfo(&ofw_di);
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continue;
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}
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di.di_intr_rid = intr_rid;
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ofw_reg_to_paddr(child, 0, &portal_pa, &portal_size, NULL);
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rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 0);
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if (sc->sc_dp_pa == 0)
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sc->sc_dp_pa = portal_pa - rle->start;
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portal_size = rle->end + 1;
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rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 1);
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portal_size = ulmax(rle->end + 1, portal_size);
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sc->sc_dp_size = ulmax(sc->sc_dp_size, portal_size);
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if (dpaa_portal_alloc_res(dev, &di, cpu_num))
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goto err;
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}
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ofw_bus_gen_destroy_devinfo(&ofw_di);
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return (bman_portals_attach(dev));
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err:
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resource_list_free(&di.di_res);
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ofw_bus_gen_destroy_devinfo(&ofw_di);
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bman_portals_detach(dev);
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return (ENXIO);
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}
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