b7bdc6a94f
Official Linux dts's put the individual portals under a simple-bus, rather than under a '*-portals' grouping. This adds a hack to permit that, which gets us closer to using stock device trees for DPAA-based devices.
251 lines
6.5 KiB
C
251 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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DRIVER_MODULE(bman, simplebus, bman_driver, bman_devclass, 0, 0);
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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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