/* $NetBSD: isp1763hc_rr.c,v 1.1 2026/10/11 17:31:04 rkujawa Exp $ */ /*- * Copyright (c) 2026 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Radoslaw Kujawa. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Individual Computers RapidRoad USB, on clockport. */ #include __KERNEL_RCSID(0, "$NetBSD: isp1763hc_rr.c,v 1.1 2026/10/11 17:31:04 rkujawa Exp $"); #include #include #include #include #include #include #include #include struct isp1763hc_rr_softc { struct isp1763hc_softc sc_isp; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; void *sc_ih; void (*sc_intr_disestablish)(void *); int sc_bank; bool sc_attached; }; #define RR_SOFTC(sc) ((struct isp1763hc_rr_softc *)(sc)) static int isp1763hc_rr_match(device_t, cfdata_t, void *); static void isp1763hc_rr_attach(device_t, device_t, void *); static int isp1763hc_rr_detach(device_t, int); static bool isp1763hc_rr_identify(bus_space_tag_t, bus_space_handle_t); static bool isp1763hc_rr_shutdown(device_t, int); static int isp1763hc_rr_intr(void *); static void isp1763hc_rr_bank(struct isp1763hc_rr_softc *, bus_size_t); static uint8_t isp1763hc_rr_rd1(struct isp1763hc_softc *, bus_size_t); static void isp1763hc_rr_wr1(struct isp1763hc_softc *, bus_size_t, uint8_t); static uint16_t isp1763hc_rr_rd2(struct isp1763hc_softc *, bus_size_t); static void isp1763hc_rr_wr2(struct isp1763hc_softc *, bus_size_t, uint16_t); static void isp1763hc_rr_memrd(struct isp1763hc_softc *, uint16_t, void *, size_t); static void isp1763hc_rr_memwr(struct isp1763hc_softc *, uint16_t, const void *, size_t); static void isp1763hc_rr_intr_enable(struct isp1763hc_softc *, bool); CFATTACH_DECL3_NEW(isp1763hc_rr, sizeof(struct isp1763hc_rr_softc), isp1763hc_rr_match, isp1763hc_rr_attach, isp1763hc_rr_detach, isp1763hc_activate, NULL, isp1763hc_childdet, DVF_DETACH_SHUTDOWN); static bool isp1763hc_rr_identify(bus_space_tag_t iot, bus_space_handle_t ioh) { uint32_t id; int i; (void)bus_space_read_1(iot, ioh, RR_WINDOW); delay(10000); if ((bus_space_read_1(iot, ioh, RR_BANKA) & RR_BANKA_ID_MASK) != RR_BANKA_ID) return false; /* Select bank 0x0e, which holds the id. */ (void)bus_space_read_1(iot, ioh, RR_BANKB); id = 0; for (i = 0; i < 4; i++) id |= (uint32_t)bus_space_read_1(iot, ioh, RR_WINDOW + i) << (8 * i); return id == ISP1763_CHIPID_VALUE; } static int isp1763hc_rr_match(device_t parent, cfdata_t cf, void *aux) { struct clockport_attach_args *cpa = aux; bus_space_handle_t ioh; bool found; if (bus_space_map(cpa->cp_iot, 0, RR_NREGS, 0, &ioh) != 0) return 0; if ((cf->cf_flags & RR_FLAGS_FORCE) != 0 && (bus_space_read_1(cpa->cp_iot, ioh, RR_STATUS) & RR_STATUS_GATE) != 0) bus_space_write_1(cpa->cp_iot, ioh, RR_CTRL, 0); found = isp1763hc_rr_identify(cpa->cp_iot, ioh); bus_space_unmap(cpa->cp_iot, ioh, RR_NREGS); return found ? 1 : 0; } static void isp1763hc_rr_attach(device_t parent, device_t self, void *aux) { struct isp1763hc_rr_softc *rsc = device_private(self); struct isp1763hc_softc *sc = &rsc->sc_isp; struct clockport_attach_args *cpa = aux; aprint_naive("\n"); aprint_normal(": RapidRoad USB\n"); rsc->sc_iot = cpa->cp_iot; if (bus_space_map(rsc->sc_iot, 0, RR_NREGS, 0, &rsc->sc_ioh) != 0) { aprint_error_dev(self, "can't map registers\n"); return; } bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_CTRL, 0); rsc->sc_bank = -1; sc->sc_dev = self; sc->sc_hwmode = ISP1763_HWMODE_BUS8; sc->sc_rd1 = isp1763hc_rr_rd1; sc->sc_wr1 = isp1763hc_rr_wr1; sc->sc_rd2 = isp1763hc_rr_rd2; sc->sc_wr2 = isp1763hc_rr_wr2; sc->sc_memrd = isp1763hc_rr_memrd; sc->sc_memwr = isp1763hc_rr_memwr; sc->sc_intr_enable = isp1763hc_rr_intr_enable; rsc->sc_intr_disestablish = cpa->cp_intr_disestablish; rsc->sc_ih = cpa->cp_intr_establish(isp1763hc_rr_intr, rsc); if (isp1763hc_attach(sc) != 0) { rsc->sc_intr_disestablish(rsc->sc_ih); bus_space_unmap(rsc->sc_iot, rsc->sc_ioh, RR_NREGS); return; } rsc->sc_attached = true; if (!pmf_device_register1(self, NULL, NULL, isp1763hc_rr_shutdown)) aprint_error_dev(self, "couldn't establish power handler\n"); } static int isp1763hc_rr_detach(device_t self, int flags) { struct isp1763hc_rr_softc *rsc = device_private(self); int error; if (!rsc->sc_attached) return 0; error = isp1763hc_detach(&rsc->sc_isp, flags); if (error != 0) return error; pmf_device_deregister(self); rsc->sc_intr_disestablish(rsc->sc_ih); bus_space_unmap(rsc->sc_iot, rsc->sc_ioh, RR_NREGS); rsc->sc_attached = false; return 0; } static bool isp1763hc_rr_shutdown(device_t self, int howto) { struct isp1763hc_rr_softc *rsc = device_private(self); isp1763hc_shutdown(&rsc->sc_isp); return true; } static int isp1763hc_rr_intr(void *arg) { struct isp1763hc_rr_softc *rsc = arg; uint8_t status; status = bus_space_read_1(rsc->sc_iot, rsc->sc_ioh, RR_STATUS); if ((status & (RR_STATUS_GATE | RR_STATUS_INT)) != (RR_STATUS_GATE | RR_STATUS_INT)) return 0; bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_CTRL, 0); isp1763hc_intr(&rsc->sc_isp); return 1; } static void isp1763hc_rr_bank(struct isp1763hc_rr_softc *rsc, bus_size_t reg) { if (rsc->sc_bank == RR_BANK(reg)) return; rsc->sc_bank = RR_BANK(reg); bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_BANKA, rsc->sc_bank); } static uint8_t isp1763hc_rr_rd1(struct isp1763hc_softc *sc, bus_size_t reg) { struct isp1763hc_rr_softc *rsc = RR_SOFTC(sc); isp1763hc_rr_bank(rsc, reg); return bus_space_read_1(rsc->sc_iot, rsc->sc_ioh, RR_SLOT(reg)); } static void isp1763hc_rr_wr1(struct isp1763hc_softc *sc, bus_size_t reg, uint8_t val) { struct isp1763hc_rr_softc *rsc = RR_SOFTC(sc); isp1763hc_rr_bank(rsc, reg); bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_SLOT(reg), val); } static uint16_t isp1763hc_rr_rd2(struct isp1763hc_softc *sc, bus_size_t reg) { struct isp1763hc_rr_softc *rsc = RR_SOFTC(sc); uint16_t hi; isp1763hc_rr_bank(rsc, reg); hi = bus_space_read_1(rsc->sc_iot, rsc->sc_ioh, RR_SLOT(reg) + 1); return (hi << 8) | bus_space_read_1(rsc->sc_iot, rsc->sc_ioh, RR_SLOT(reg)); } static void isp1763hc_rr_wr2(struct isp1763hc_softc *sc, bus_size_t reg, uint16_t val) { struct isp1763hc_rr_softc *rsc = RR_SOFTC(sc); isp1763hc_rr_bank(rsc, reg); bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_SLOT(reg), val & 0xff); bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_SLOT(reg) + 1, val >> 8); } static void isp1763hc_rr_memrd(struct isp1763hc_softc *sc, uint16_t addr, void *buf, size_t len) { struct isp1763hc_rr_softc *rsc = RR_SOFTC(sc); bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_MEMLO, addr & 0xff); bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_MEMHI, addr >> 8); bus_space_read_multi_1(rsc->sc_iot, rsc->sc_ioh, RR_DATA, buf, len); } static void isp1763hc_rr_memwr(struct isp1763hc_softc *sc, uint16_t addr, const void *buf, size_t len) { struct isp1763hc_rr_softc *rsc = RR_SOFTC(sc); bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_MEMLO, addr & 0xff); bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_MEMHI, addr >> 8); bus_space_write_multi_1(rsc->sc_iot, rsc->sc_ioh, RR_DATA, buf, len); } static void isp1763hc_rr_intr_enable(struct isp1763hc_softc *sc, bool on) { struct isp1763hc_rr_softc *rsc = RR_SOFTC(sc); bus_space_write_1(rsc->sc_iot, rsc->sc_ioh, RR_CTRL, on ? RR_CTRL_GATE : 0); }