/*- * 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. * * $FreeBSD$ */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pic_if.h" #define ICU_GRP_NSR 0x0 #define ICU_GRP_SR 0x1 #define ICU_GRP_SEI 0x4 #define ICU_GRP_REI 0x5 #define ICU_SETSPI_NSR_AL 0x10 #define ICU_SETSPI_NSR_AH 0x14 #define ICU_CLRSPI_NSR_AL 0x18 #define ICU_CLRSPI_NSR_AH 0x1c #define ICU_INT_CFG(x) (0x100 + (x) * 4) #define ICU_INT_ENABLE (1 << 24) #define ICU_INT_EDGE (1 << 28) #define ICU_INT_GROUP_SHIFT 29 #define ICU_INT_MASK 0x3ff #define MV_CP110_ICU_MAX_NIRQS 207 struct mv_cp110_icu_softc { device_t dev; device_t parent; struct resource *res; struct intr_map_data_fdt *parent_map_data; }; static struct resource_spec mv_cp110_icu_res_spec[] = { { SYS_RES_MEMORY, 0, RF_ACTIVE | RF_SHAREABLE }, { -1, 0 } }; static struct ofw_compat_data compat_data[] = { {"marvell,cp110-icu-nsr", 1}, {"marvell,cp110-icu-sei", 2}, {NULL, 0} }; #define RD4(sc, reg) bus_read_4((sc)->res, (reg)) #define WR4(sc, reg, val) bus_write_4((sc)->res, (reg), (val)) static int mv_cp110_icu_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) return (ENXIO); device_set_desc(dev, "Marvell Interrupt Consolidation Unit"); return (BUS_PROBE_DEFAULT); } static int mv_cp110_icu_attach(device_t dev) { struct mv_cp110_icu_softc *sc; phandle_t node, msi_parent; sc = device_get_softc(dev); sc->dev = dev; node = ofw_bus_get_node(dev); if (OF_getencprop(node, "msi-parent", &msi_parent, sizeof(phandle_t)) <= 0) { device_printf(dev, "cannot find msi-parent property\n"); return (ENXIO); } if ((sc->parent = OF_device_from_xref(msi_parent)) == NULL) { device_printf(dev, "cannot find msi-parent device\n"); return (ENXIO); } if (bus_alloc_resources(dev, mv_cp110_icu_res_spec, &sc->res) != 0) { device_printf(dev, "cannot allocate resources for device\n"); return (ENXIO); } if (intr_pic_register(dev, OF_xref_from_node(node)) == NULL) { device_printf(dev, "Cannot register ICU\n"); goto fail; } /* Allocate GICP compatible mapping entry (2 cells) */ sc->parent_map_data = (struct intr_map_data_fdt *)intr_alloc_map_data( INTR_MAP_DATA_FDT, sizeof(struct intr_map_data_fdt) + + 3 * sizeof(phandle_t), M_WAITOK | M_ZERO); return (0); fail: bus_release_resources(dev, mv_cp110_icu_res_spec, &sc->res); return (ENXIO); } static struct intr_map_data * mv_cp110_icu_convert_map_data(struct mv_cp110_icu_softc *sc, struct intr_map_data *data) { struct intr_map_data_fdt *daf; uint32_t reg, irq_no, irq_type; daf = (struct intr_map_data_fdt *)data; if (daf->ncells != 2) return (NULL); irq_no = daf->cells[0]; irq_type = daf->cells[1]; if (irq_no >= MV_CP110_ICU_MAX_NIRQS) return (NULL); if (irq_type != IRQ_TYPE_LEVEL_HIGH && irq_type != IRQ_TYPE_EDGE_RISING) return (NULL); /* We rely on fact that ICU->GIC mapping is preset by bootstrap. */ reg = RD4(sc, ICU_INT_CFG(irq_no)); /* Construct GICP compatible mapping. */ sc->parent_map_data->ncells = 2; sc->parent_map_data->cells[0] = reg & ICU_INT_MASK; sc->parent_map_data->cells[1] = irq_type; return ((struct intr_map_data *)sc->parent_map_data); } static int mv_cp110_icu_detach(device_t dev) { return (EBUSY); } static int mv_cp110_icu_activate_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct mv_cp110_icu_softc *sc; sc = device_get_softc(dev); data = mv_cp110_icu_convert_map_data(sc, data); if (data == NULL) return (EINVAL); return (PIC_ACTIVATE_INTR(sc->parent, isrc, res, data)); } static void mv_cp110_icu_enable_intr(device_t dev, struct intr_irqsrc *isrc) { struct mv_cp110_icu_softc *sc; sc = device_get_softc(dev); PIC_ENABLE_INTR(sc->parent, isrc); } static void mv_cp110_icu_disable_intr(device_t dev, struct intr_irqsrc *isrc) { struct mv_cp110_icu_softc *sc; sc = device_get_softc(dev); PIC_DISABLE_INTR(sc->parent, isrc); } static int mv_cp110_icu_map_intr(device_t dev, struct intr_map_data *data, struct intr_irqsrc **isrcp) { struct mv_cp110_icu_softc *sc; struct intr_map_data_fdt *daf; uint32_t reg, irq_no, irq_type; int ret; sc = device_get_softc(dev); if (data->type != INTR_MAP_DATA_FDT) return (ENOTSUP); /* Parse original */ daf = (struct intr_map_data_fdt *)data; if (daf->ncells != 2) return (EINVAL); irq_no = daf->cells[0]; irq_type = daf->cells[1]; data = mv_cp110_icu_convert_map_data(sc, data); if (data == NULL) return (EINVAL); reg = RD4(sc, ICU_INT_CFG(irq_no)); reg |= ICU_INT_ENABLE; if (irq_type == IRQ_TYPE_LEVEL_HIGH) reg &= ~ICU_INT_EDGE; else reg |= ICU_INT_EDGE; WR4(sc, ICU_INT_CFG(irq_no), reg); ret = PIC_MAP_INTR(sc->parent, data, isrcp); (*isrcp)->isrc_dev = sc->dev; return (ret); } static int mv_cp110_icu_deactivate_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct mv_cp110_icu_softc *sc; sc = device_get_softc(dev); data = mv_cp110_icu_convert_map_data(sc, data); if (data == NULL) return (EINVAL); return (PIC_DEACTIVATE_INTR(sc->parent, isrc, res, data)); } static int mv_cp110_icu_setup_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct mv_cp110_icu_softc *sc; sc = device_get_softc(dev); data = mv_cp110_icu_convert_map_data(sc, data); if (data == NULL) return (EINVAL); return (PIC_SETUP_INTR(sc->parent, isrc, res, data)); } static int mv_cp110_icu_teardown_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct mv_cp110_icu_softc *sc; sc = device_get_softc(dev); data = mv_cp110_icu_convert_map_data(sc, data); if (data == NULL) return (EINVAL); return (PIC_TEARDOWN_INTR(sc->parent, isrc, res, data)); } static void mv_cp110_icu_pre_ithread(device_t dev, struct intr_irqsrc *isrc) { struct mv_cp110_icu_softc *sc; sc = device_get_softc(dev); PIC_PRE_ITHREAD(sc->parent, isrc); } static void mv_cp110_icu_post_ithread(device_t dev, struct intr_irqsrc *isrc) { struct mv_cp110_icu_softc *sc; sc = device_get_softc(dev); PIC_POST_ITHREAD(sc->parent, isrc); } static void mv_cp110_icu_post_filter(device_t dev, struct intr_irqsrc *isrc) { struct mv_cp110_icu_softc *sc; sc = device_get_softc(dev); PIC_POST_FILTER(sc->parent, isrc); } static device_method_t mv_cp110_icu_methods[] = { /* Device interface */ DEVMETHOD(device_probe, mv_cp110_icu_probe), DEVMETHOD(device_attach, mv_cp110_icu_attach), DEVMETHOD(device_detach, mv_cp110_icu_detach), /* Interrupt controller interface */ DEVMETHOD(pic_activate_intr, mv_cp110_icu_activate_intr), DEVMETHOD(pic_disable_intr, mv_cp110_icu_disable_intr), DEVMETHOD(pic_enable_intr, mv_cp110_icu_enable_intr), DEVMETHOD(pic_map_intr, mv_cp110_icu_map_intr), DEVMETHOD(pic_deactivate_intr, mv_cp110_icu_deactivate_intr), DEVMETHOD(pic_setup_intr, mv_cp110_icu_setup_intr), DEVMETHOD(pic_teardown_intr, mv_cp110_icu_teardown_intr), DEVMETHOD(pic_post_filter, mv_cp110_icu_post_filter), DEVMETHOD(pic_post_ithread, mv_cp110_icu_post_ithread), DEVMETHOD(pic_pre_ithread, mv_cp110_icu_pre_ithread), DEVMETHOD_END }; static devclass_t mv_cp110_icu_devclass; static driver_t mv_cp110_icu_driver = { "mv_cp110_icu", mv_cp110_icu_methods, sizeof(struct mv_cp110_icu_softc), }; EARLY_DRIVER_MODULE(mv_cp110_icu, mv_cp110_icu_bus, mv_cp110_icu_driver, mv_cp110_icu_devclass, 0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LAST);