/*- * Copyright (c) 2016 Michal Meloun * 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 /* * Local interrupt controller driver for Tegra SoCs. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "pic_if.h" #define LIC_VIRQ_CPU 0x00 #define LIC_VIRQ_COP 0x04 #define LIC_VFRQ_CPU 0x08 #define LIC_VFRQ_COP 0x0c #define LIC_ISR 0x10 #define LIC_FIR 0x14 #define LIC_FIR_SET 0x18 #define LIC_FIR_CLR 0x1c #define LIC_CPU_IER 0x20 #define LIC_CPU_IER_SET 0x24 #define LIC_CPU_IER_CLR 0x28 #define LIC_CPU_IEP_CLASS 0x2C #define LIC_COP_IER 0x30 #define LIC_COP_IER_SET 0x34 #define LIC_COP_IER_CLR 0x38 #define LIC_COP_IEP_CLASS 0x3c #define WR4(_sc, _b, _r, _v) bus_write_4((_sc)->mem_res[_b], (_r), (_v)) #define RD4(_sc, _b, _r) bus_read_4((_sc)->mem_res[_b], (_r)) static struct resource_spec lic_spec[] = { { SYS_RES_MEMORY, 0, RF_ACTIVE }, { SYS_RES_MEMORY, 1, RF_ACTIVE }, { SYS_RES_MEMORY, 2, RF_ACTIVE }, { SYS_RES_MEMORY, 3, RF_ACTIVE }, { SYS_RES_MEMORY, 4, RF_ACTIVE }, { -1, 0 } }; static struct ofw_compat_data compat_data[] = { {"nvidia,tegra124-ictlr", 1}, {"nvidia,tegra210-ictlr", 1}, {NULL, 0} }; struct tegra_lic_sc { device_t dev; struct resource *mem_res[nitems(lic_spec)]; device_t parent; }; static int tegra_lic_activate_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct tegra_lic_sc *sc = device_get_softc(dev); return (PIC_ACTIVATE_INTR(sc->parent, isrc, res, data)); } static void tegra_lic_disable_intr(device_t dev, struct intr_irqsrc *isrc) { struct tegra_lic_sc *sc = device_get_softc(dev); PIC_DISABLE_INTR(sc->parent, isrc); } static void tegra_lic_enable_intr(device_t dev, struct intr_irqsrc *isrc) { struct tegra_lic_sc *sc = device_get_softc(dev); PIC_ENABLE_INTR(sc->parent, isrc); } static int tegra_lic_map_intr(device_t dev, struct intr_map_data *data, struct intr_irqsrc **isrcp) { struct tegra_lic_sc *sc = device_get_softc(dev); return (PIC_MAP_INTR(sc->parent, data, isrcp)); } static int tegra_lic_deactivate_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct tegra_lic_sc *sc = device_get_softc(dev); return (PIC_DEACTIVATE_INTR(sc->parent, isrc, res, data)); } static int tegra_lic_setup_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct tegra_lic_sc *sc = device_get_softc(dev); return (PIC_SETUP_INTR(sc->parent, isrc, res, data)); } static int tegra_lic_teardown_intr(device_t dev, struct intr_irqsrc *isrc, struct resource *res, struct intr_map_data *data) { struct tegra_lic_sc *sc = device_get_softc(dev); return (PIC_TEARDOWN_INTR(sc->parent, isrc, res, data)); } static void tegra_lic_pre_ithread(device_t dev, struct intr_irqsrc *isrc) { struct tegra_lic_sc *sc = device_get_softc(dev); PIC_PRE_ITHREAD(sc->parent, isrc); } static void tegra_lic_post_ithread(device_t dev, struct intr_irqsrc *isrc) { struct tegra_lic_sc *sc = device_get_softc(dev); PIC_POST_ITHREAD(sc->parent, isrc); } static void tegra_lic_post_filter(device_t dev, struct intr_irqsrc *isrc) { struct tegra_lic_sc *sc = device_get_softc(dev); PIC_POST_FILTER(sc->parent, isrc); } #ifdef SMP static int tegra_lic_bind_intr(device_t dev, struct intr_irqsrc *isrc) { struct tegra_lic_sc *sc = device_get_softc(dev); return (PIC_BIND_INTR(sc->parent, isrc)); } #endif static int tegra_lic_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); return (BUS_PROBE_DEFAULT); } static int tegra_lic_attach(device_t dev) { struct tegra_lic_sc *sc; phandle_t node; phandle_t parent_xref; int i, rv; sc = device_get_softc(dev); sc->dev = dev; node = ofw_bus_get_node(dev); rv = OF_getencprop(node, "interrupt-parent", &parent_xref, sizeof(parent_xref)); if (rv <= 0) { device_printf(dev, "Cannot read parent node property\n"); goto fail; } sc->parent = OF_device_from_xref(parent_xref); if (sc->parent == NULL) { device_printf(dev, "Cannott find parent controller\n"); goto fail; } if (bus_alloc_resources(dev, lic_spec, sc->mem_res)) { device_printf(dev, "Cannott allocate resources\n"); goto fail; } /* Disable all interrupts, route all to irq */ for (i = 0; i < nitems(lic_spec); i++) { if (sc->mem_res[i] == NULL) continue; WR4(sc, i, LIC_CPU_IER_CLR, 0xFFFFFFFF); WR4(sc, i, LIC_CPU_IEP_CLASS, 0); } if (intr_pic_register(dev, OF_xref_from_node(node)) == NULL) { device_printf(dev, "Cannot register PIC\n"); goto fail; } return (0); fail: bus_release_resources(dev, lic_spec, sc->mem_res); return (ENXIO); } static int tegra_lic_detach(device_t dev) { struct tegra_lic_sc *sc; int i; sc = device_get_softc(dev); for (i = 0; i < nitems(lic_spec); i++) { if (sc->mem_res[i] == NULL) continue; bus_release_resource(dev, SYS_RES_MEMORY, i, sc->mem_res[i]); } return (0); } static device_method_t tegra_lic_methods[] = { DEVMETHOD(device_probe, tegra_lic_probe), DEVMETHOD(device_attach, tegra_lic_attach), DEVMETHOD(device_detach, tegra_lic_detach), /* Interrupt controller interface */ DEVMETHOD(pic_activate_intr, tegra_lic_activate_intr), DEVMETHOD(pic_disable_intr, tegra_lic_disable_intr), DEVMETHOD(pic_enable_intr, tegra_lic_enable_intr), DEVMETHOD(pic_map_intr, tegra_lic_map_intr), DEVMETHOD(pic_deactivate_intr, tegra_lic_deactivate_intr), DEVMETHOD(pic_setup_intr, tegra_lic_setup_intr), DEVMETHOD(pic_teardown_intr, tegra_lic_teardown_intr), DEVMETHOD(pic_pre_ithread, tegra_lic_pre_ithread), DEVMETHOD(pic_post_ithread, tegra_lic_post_ithread), DEVMETHOD(pic_post_filter, tegra_lic_post_filter), #ifdef SMP DEVMETHOD(pic_bind_intr, tegra_lic_bind_intr), #endif DEVMETHOD_END }; static DEFINE_CLASS_0(lic, tegra_lic_driver, tegra_lic_methods, sizeof(struct tegra_lic_sc)); EARLY_DRIVER_MODULE(tegra_lic, simplebus, tegra_lic_driver, NULL, NULL, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE + 1);