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