Index: head/sys/dev/fdt/simple_mfd.c =================================================================== --- head/sys/dev/fdt/simple_mfd.c (revision 351176) +++ head/sys/dev/fdt/simple_mfd.c (revision 351177) @@ -1,296 +1,296 @@ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2018 Rubicon Communications, LLC (Netgate) * * 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 __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include device_t simple_mfd_add_device(device_t dev, phandle_t node, u_int order, const char *name, int unit, struct simplebus_devinfo *di); struct simplebus_devinfo *simple_mfd_setup_dinfo(device_t dev, phandle_t node, struct simplebus_devinfo *di); #include "syscon_if.h" #include MALLOC_DECLARE(M_SYSCON); static uint32_t simple_mfd_syscon_read_4(struct syscon *syscon, bus_size_t offset); static int simple_mfd_syscon_write_4(struct syscon *syscon, bus_size_t offset, uint32_t val); static int simple_mfd_syscon_modify_4(struct syscon *syscon, bus_size_t offset, uint32_t clear_bits, uint32_t set_bits); #define SYSCON_LOCK(_sc) mtx_lock_spin(&(_sc)->mtx) #define SYSCON_UNLOCK(_sc) mtx_unlock_spin(&(_sc)->mtx) #define SYSCON_LOCK_INIT(_sc) mtx_init(&(_sc)->mtx, \ device_get_nameunit((_sc)->dev), "syscon", MTX_SPIN) #define SYSCON_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->mtx); #define SYSCON_ASSERT_LOCKED(_sc) mtx_assert(&(_sc)->mtx, MA_OWNED); #define SYSCON_ASSERT_UNLOCKED(_sc) mtx_assert(&(_sc)->mtx, MA_NOTOWNED); static syscon_method_t simple_mfd_syscon_methods[] = { SYSCONMETHOD(syscon_read_4, simple_mfd_syscon_read_4), SYSCONMETHOD(syscon_write_4, simple_mfd_syscon_write_4), SYSCONMETHOD(syscon_modify_4, simple_mfd_syscon_modify_4), SYSCONMETHOD_END }; DEFINE_CLASS_1(simple_mfd_syscon, simple_mfd_syscon_class, simple_mfd_syscon_methods, 0, syscon_class); static uint32_t simple_mfd_syscon_read_4(struct syscon *syscon, bus_size_t offset) { struct simple_mfd_softc *sc; uint32_t val; sc = device_get_softc(syscon->pdev); SYSCON_LOCK(sc); val = bus_read_4(sc->mem_res, offset); SYSCON_UNLOCK(sc); return (val); } static int simple_mfd_syscon_write_4(struct syscon *syscon, bus_size_t offset, uint32_t val) { struct simple_mfd_softc *sc; sc = device_get_softc(syscon->pdev); SYSCON_LOCK(sc); bus_write_4(sc->mem_res, offset, val); SYSCON_UNLOCK(sc); return (0); } static int simple_mfd_syscon_modify_4(struct syscon *syscon, bus_size_t offset, uint32_t clear_bits, uint32_t set_bits) { struct simple_mfd_softc *sc; uint32_t val; sc = device_get_softc(syscon->pdev); SYSCON_LOCK(sc); val = bus_read_4(sc->mem_res, offset); val &= ~clear_bits; val |= set_bits; bus_write_4(sc->mem_res, offset, val); SYSCON_UNLOCK(sc); return (0); } static int simple_mfd_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (!ofw_bus_is_compatible(dev, "simple-mfd")) return (ENXIO); device_set_desc(dev, "Simple MFD (Multi-Functions Device)"); return (BUS_PROBE_GENERIC); } static int simple_mfd_attach(device_t dev) { struct simple_mfd_softc *sc; phandle_t node, child; device_t cdev; int rid; sc = device_get_softc(dev); node = ofw_bus_get_node(dev); sc->dev = dev; rid = 0; /* Parse address-cells and size-cells from the parent node as a fallback */ if (OF_getencprop(node, "#address-cells", &sc->sc.acells, sizeof(sc->sc.acells)) == -1) { if (OF_getencprop(OF_parent(node), "#address-cells", &sc->sc.acells, sizeof(sc->sc.acells)) == -1) { sc->sc.acells = 2; } } if (OF_getencprop(node, "#size-cells", &sc->sc.scells, sizeof(sc->sc.scells)) == -1) { if (OF_getencprop(OF_parent(node), "#size-cells", &sc->sc.scells, sizeof(sc->sc.scells)) == -1) { sc->sc.scells = 1; } } /* If the node has a ranges prop, parse it so children mapping will be done correctly */ if (OF_hasprop(node, "ranges")) { if (simplebus_fill_ranges(node, &sc->sc) < 0) { device_printf(dev, "could not get ranges\n"); return (ENXIO); } } /* Attach child devices */ for (child = OF_child(node); child > 0; child = OF_peer(child)) { cdev = simple_mfd_add_device(dev, child, 0, NULL, -1, NULL); if (cdev != NULL) device_probe_and_attach(cdev); } if (ofw_bus_is_compatible(dev, "syscon")) { sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, - RF_ACTIVE | RF_SHAREABLE); + RF_ACTIVE); if (sc->mem_res == NULL) { device_printf(dev, "Cannot allocate memory resource\n"); return (ENXIO); } SYSCON_LOCK_INIT(sc); sc->syscon = syscon_create_ofw_node(dev, &simple_mfd_syscon_class, ofw_bus_get_node(dev)); if (sc->syscon == NULL) { device_printf(dev, "Failed to create/register syscon\n"); return (ENXIO); } } return (bus_generic_attach(dev)); } static int simple_mfd_detach(device_t dev) { struct simple_mfd_softc *sc; sc = device_get_softc(dev); if (ofw_bus_is_compatible(dev, "syscon")) { if (sc->syscon != NULL) { syscon_unregister(sc->syscon); free(sc->syscon, M_SYSCON); } SYSCON_LOCK_DESTROY(sc); if (sc->mem_res != NULL) bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res); } return (0); } struct simplebus_devinfo * simple_mfd_setup_dinfo(device_t dev, phandle_t node, struct simplebus_devinfo *di) { struct simplebus_softc *sc; struct simplebus_devinfo *ndi; sc = device_get_softc(dev); if (di == NULL) ndi = malloc(sizeof(*ndi), M_DEVBUF, M_WAITOK | M_ZERO); else ndi = di; if (ofw_bus_gen_setup_devinfo(&ndi->obdinfo, node) != 0) { if (di == NULL) free(ndi, M_DEVBUF); return (NULL); } /* reg resources is from the parent but interrupts is on the node itself */ resource_list_init(&ndi->rl); ofw_bus_reg_to_rl(dev, OF_parent(node), sc->acells, sc->scells, &ndi->rl); ofw_bus_intr_to_rl(dev, node, &ndi->rl, NULL); return (ndi); } device_t simple_mfd_add_device(device_t dev, phandle_t node, u_int order, const char *name, int unit, struct simplebus_devinfo *di) { struct simplebus_devinfo *ndi; device_t cdev; if ((ndi = simple_mfd_setup_dinfo(dev, node, di)) == NULL) return (NULL); cdev = device_add_child_ordered(dev, order, name, unit); if (cdev == NULL) { device_printf(dev, "<%s>: device_add_child failed\n", ndi->obdinfo.obd_name); resource_list_free(&ndi->rl); ofw_bus_gen_destroy_devinfo(&ndi->obdinfo); if (di == NULL) free(ndi, M_DEVBUF); return (NULL); } device_set_ivars(cdev, ndi); return(cdev); } static device_method_t simple_mfd_methods[] = { /* Device interface */ DEVMETHOD(device_probe, simple_mfd_probe), DEVMETHOD(device_attach, simple_mfd_attach), DEVMETHOD(device_detach, simple_mfd_detach), DEVMETHOD_END }; DEFINE_CLASS_1(simple_mfd, simple_mfd_driver, simple_mfd_methods, sizeof(struct simple_mfd_softc), simplebus_driver); static devclass_t simple_mfd_devclass; EARLY_DRIVER_MODULE(simple_mfd, simplebus, simple_mfd_driver, simple_mfd_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_LATE); MODULE_VERSION(simple_mfd, 1);