/*- * SPDX-License-Identifier: BSD-2-Clause * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pic_if.h" #define MV_AP806_GICP_MAX_NIRQS 207 struct mv_ap806_gicp_softc { device_t dev; device_t parent; struct resource *res; ssize_t spi_ranges_cnt; uint32_t *spi_ranges; struct intr_map_data_fdt *parent_map_data; }; static struct ofw_compat_data compat_data[] = { {"marvell,ap806-gicp", 1}, {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_ap806_gicp_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 GICP"); return (BUS_PROBE_DEFAULT); } static int mv_ap806_gicp_attach(device_t dev) { struct mv_ap806_gicp_softc *sc; phandle_t node, xref, intr_parent; sc = device_get_softc(dev); sc->dev = dev; node = ofw_bus_get_node(dev); /* Look for our parent */ if ((intr_parent = ofw_bus_find_iparent(node)) == 0) { device_printf(dev, "Cannot find our parent interrupt controller\n"); return (ENXIO); } if ((sc->parent = OF_device_from_xref(intr_parent)) == NULL) { device_printf(dev, "cannot find parent interrupt controller device\n"); return (ENXIO); } sc->spi_ranges_cnt = OF_getencprop_alloc(node, "marvell,spi-ranges", (void **)&sc->spi_ranges); xref = OF_xref_from_node(node); if (intr_pic_register(dev, xref) == NULL) { device_printf(dev, "Cannot register GICP\n"); return (ENXIO); } /* Allocate GIC compatible mapping entry (3 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); OF_device_register_xref(xref, dev); return (0); } static int mv_ap806_gicp_detach(device_t dev) { return (EBUSY); } static struct intr_map_data * mv_ap806_gicp_convert_map_data(struct mv_ap806_gicp_softc *sc, struct intr_map_data *data) { struct intr_map_data_fdt *daf; uint32_t i, irq_num, irq_type; daf = (struct intr_map_data_fdt *)data; if (daf->ncells != 2) return (NULL); irq_num = daf->cells[0]; irq_type = daf->cells[1]; if (irq_num >= MV_AP806_GICP_MAX_NIRQS) return (NULL); /* Construct GIC compatible mapping. */ sc->parent_map_data->ncells = 3; sc->parent_map_data->cells[0] = 0; /* SPI */ sc->parent_map_data->cells[2] = irq_type; /* Map the interrupt number to SPI number */ for (i = 0; i < sc->spi_ranges_cnt / 2; i += 2) { if (irq_num < sc->spi_ranges[i + 1]) { irq_num += sc->spi_ranges[i]; break; } irq_num -= sc->spi_ranges[i]; } sc->parent_map_data->cells[1] = irq_num - 32; return ((struct intr_map_data *)sc->parent_map_data); } static int mv_ap806_gicp_activate_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct mv_ap806_gicp_softc *sc; sc = device_get_softc(dev); data = mv_ap806_gicp_convert_map_data(sc, data); if (data == NULL) return (EINVAL); return (PIC_ACTIVATE_INTR(sc->parent, isrc, res, data)); } static void mv_ap806_gicp_enable_intr(device_t dev, struct intr_irqsrc *isrc) { struct mv_ap806_gicp_softc *sc; sc = device_get_softc(dev); PIC_ENABLE_INTR(sc->parent, isrc); } static void mv_ap806_gicp_disable_intr(device_t dev, struct intr_irqsrc *isrc) { struct mv_ap806_gicp_softc *sc; sc = device_get_softc(dev); PIC_DISABLE_INTR(sc->parent, isrc); } static int mv_ap806_gicp_map_intr(device_t dev, struct intr_map_data *data, struct intr_irqsrc **isrcp) { struct mv_ap806_gicp_softc *sc; int ret; sc = device_get_softc(dev); if (data->type != INTR_MAP_DATA_FDT) return (ENOTSUP); data = mv_ap806_gicp_convert_map_data(sc, data); if (data == NULL) return (EINVAL); ret = PIC_MAP_INTR(sc->parent, data, isrcp); (*isrcp)->isrc_dev = sc->dev; return(ret); } static int mv_ap806_gicp_deactivate_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct mv_ap806_gicp_softc *sc; sc = device_get_softc(dev); data = mv_ap806_gicp_convert_map_data(sc, data); if (data == NULL) return (EINVAL); return (PIC_DEACTIVATE_INTR(sc->parent, isrc, res, data)); } static int mv_ap806_gicp_setup_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct mv_ap806_gicp_softc *sc; sc = device_get_softc(dev); data = mv_ap806_gicp_convert_map_data(sc, data); if (data == NULL) return (EINVAL); return (PIC_SETUP_INTR(sc->parent, isrc, res, data)); } static int mv_ap806_gicp_teardown_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct mv_ap806_gicp_softc *sc; sc = device_get_softc(dev); data = mv_ap806_gicp_convert_map_data(sc, data); if (data == NULL) return (EINVAL); return (PIC_TEARDOWN_INTR(sc->parent, isrc, res, data)); } static void mv_ap806_gicp_pre_ithread(device_t dev, struct intr_irqsrc *isrc) { struct mv_ap806_gicp_softc *sc; sc = device_get_softc(dev); PIC_PRE_ITHREAD(sc->parent, isrc); } static void mv_ap806_gicp_post_ithread(device_t dev, struct intr_irqsrc *isrc) { struct mv_ap806_gicp_softc *sc; sc = device_get_softc(dev); PIC_POST_ITHREAD(sc->parent, isrc); } static void mv_ap806_gicp_post_filter(device_t dev, struct intr_irqsrc *isrc) { struct mv_ap806_gicp_softc *sc; sc = device_get_softc(dev); PIC_POST_FILTER(sc->parent, isrc); } static device_method_t mv_ap806_gicp_methods[] = { /* Device interface */ DEVMETHOD(device_probe, mv_ap806_gicp_probe), DEVMETHOD(device_attach, mv_ap806_gicp_attach), DEVMETHOD(device_detach, mv_ap806_gicp_detach), /* Interrupt controller interface */ DEVMETHOD(pic_activate_intr, mv_ap806_gicp_activate_intr), DEVMETHOD(pic_disable_intr, mv_ap806_gicp_disable_intr), DEVMETHOD(pic_enable_intr, mv_ap806_gicp_enable_intr), DEVMETHOD(pic_map_intr, mv_ap806_gicp_map_intr), DEVMETHOD(pic_deactivate_intr, mv_ap806_gicp_deactivate_intr), DEVMETHOD(pic_setup_intr, mv_ap806_gicp_setup_intr), DEVMETHOD(pic_teardown_intr, mv_ap806_gicp_teardown_intr), DEVMETHOD(pic_post_filter, mv_ap806_gicp_post_filter), DEVMETHOD(pic_post_ithread, mv_ap806_gicp_post_ithread), DEVMETHOD(pic_pre_ithread, mv_ap806_gicp_pre_ithread), DEVMETHOD_END }; static devclass_t mv_ap806_gicp_devclass; static driver_t mv_ap806_gicp_driver = { "mv_ap806_gicp", mv_ap806_gicp_methods, sizeof(struct mv_ap806_gicp_softc), }; EARLY_DRIVER_MODULE(mv_ap806_gicp, simplebus, mv_ap806_gicp_driver, mv_ap806_gicp_devclass, 0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);