/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2021, Adrian Chadd * * 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 unmodified, 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 #include #include #include #include #include #include #include #include /* * The linux-msm branches that support IPQ4018 use "ipq,tcsr". * The openwrt addons use qcom,tcsr. So for now support both. * * Also, it's not quite clear yet (since this is the first port!) * whether these options and registers are specific to the QCA IPQ401x * part or show up in different linux branches as different registers * but with the same driver/naming here. Let's hope that doesn't * happen. */ static struct ofw_compat_data compat_data[] = { { "qcom,tcsr", 1 }, { "ipq,tcsr", 1 }, { NULL, 0 } }; static int qcom_tcsr_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data) return (ENXIO); device_set_desc(dev, "Qualcomm Core Top Control and Status Driver"); return (BUS_PROBE_DEFAULT); } static int qcom_tcsr_attach(device_t dev) { struct qcom_tcsr_softc *sc = device_get_softc(dev); int rid, ret; uint32_t val; sc->sc_dev = dev; /* * Hardware version is stored in the ofw_compat_data table. */ sc->hw_version = ofw_bus_search_compatible(dev, compat_data)->ocd_data; mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); rid = 0; sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (!sc->sc_mem_res) { device_printf(dev, "ERROR: Could not map memory\n"); ret = ENXIO; goto error; } /* * Parse out the open firmware entries to see which particular * configurations we need to set here. */ /* * USB control select. * * For linux-msm on the IPQ401x, it actually calls into the SCM * to make the change. OpenWRT just does a register write. * We'll do the register write for now. */ if (OF_getencprop(ofw_bus_get_node(dev), "qcom,usb-ctrl-select", &val, sizeof(val)) > 0) { if (bootverbose) device_printf(sc->sc_dev, "USB control select (val 0x%x)\n", val); QCOM_TCSR_WRITE_4(sc, QCOM_TCSR_USB_PORT_SEL, val); } /* * USB high speed phy mode select. */ if (OF_getencprop(ofw_bus_get_node(dev), "qcom,usb-hsphy-mode-select", &val, sizeof(val)) > 0) { if (bootverbose) device_printf(sc->sc_dev, "USB high speed PHY mode select (val 0x%x)\n", val); QCOM_TCSR_WRITE_4(sc, QCOM_TCSR_USB_HSPHY_CONFIG, val); } /* * Ethernet switch subsystem interface type select. */ if (OF_getencprop(ofw_bus_get_node(dev), "qcom,ess-interface-select", &val, sizeof(val)) > 0) { uint32_t reg; if (bootverbose) device_printf(sc->sc_dev, "ESS external interface select (val 0x%x)\n", val); reg = QCOM_TCSR_READ_4(sc, QCOM_TCSR_ESS_INTERFACE_SEL_OFFSET); reg &= ~QCOM_TCSR_ESS_INTERFACE_SEL_MASK; reg |= (val & QCOM_TCSR_ESS_INTERFACE_SEL_MASK); QCOM_TCSR_WRITE_4(sc, QCOM_TCSR_ESS_INTERFACE_SEL_OFFSET, reg); } /* * WiFi GLB select. */ if (OF_getencprop(ofw_bus_get_node(dev), "qcom,wifi_glb_cfg", &val, sizeof(val)) > 0) { if (bootverbose) device_printf(sc->sc_dev, "WIFI GLB select (val 0x%x)\n", val); QCOM_TCSR_WRITE_4(sc, QCOM_TCSR_WIFI0_GLB_CFG_OFFSET, val); QCOM_TCSR_WRITE_4(sc, QCOM_TCSR_WIFI1_GLB_CFG_OFFSET, val); } /* * WiFi NOC interconnect memory type. */ if (OF_getencprop(ofw_bus_get_node(dev), "qcom,wifi_noc_memtype_m0_m2", &val, sizeof(val)) > 0) { if (bootverbose) device_printf(sc->sc_dev, "WiFi NOC memory type (val 0x%x)\n", val); QCOM_TCSR_WRITE_4(sc, QCOM_TCSR_PNOC_SNOC_MEMTYPE_M0_M2, val); } return (0); error: if (sc->sc_mem_res) bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); mtx_destroy(&sc->sc_mtx); return (ret); } static int qcom_tcsr_detach(device_t dev) { struct qcom_tcsr_softc *sc = device_get_softc(dev); if (sc->sc_mem_res) bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); mtx_destroy(&sc->sc_mtx); return (0); } static device_method_t qcom_tcsr_methods[] = { /* Device interface */ DEVMETHOD(device_probe, qcom_tcsr_probe), DEVMETHOD(device_attach, qcom_tcsr_attach), DEVMETHOD(device_detach, qcom_tcsr_detach), DEVMETHOD_END }; static driver_t qcom_tcsr_driver = { "qcom_tcsr", qcom_tcsr_methods, sizeof(struct qcom_tcsr_softc), }; /* * This has to be run early, before the rest of the hardware is potentially * probed/attached. */ EARLY_DRIVER_MODULE(qcom_tcsr, simplebus, qcom_tcsr_driver, 0, 0, BUS_PASS_CPU + BUS_PASS_ORDER_EARLY); SIMPLEBUS_PNP_INFO(compat_data);