/* $OpenBSD: siop_gsc.c,v 1.6 2024/05/22 14:25:47 jsg Exp $ */ /* * Copyright (c) 2007 Mark Kettenis * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #define SIOP_GSC_RESET 0x0000 #define SIOP_GSC_OFFSET 0x0100 int siop_gsc_match(struct device *, void *, void *); void siop_gsc_attach(struct device *, struct device *, void *); void siop_gsc_reset(struct siop_common_softc *); u_int8_t siop_gsc_r1(void *, bus_space_handle_t, bus_size_t); u_int16_t siop_gsc_r2(void *, bus_space_handle_t, bus_size_t); void siop_gsc_w1(void *, bus_space_handle_t, bus_size_t, u_int8_t); void siop_gsc_w2(void *, bus_space_handle_t, bus_size_t, u_int16_t); struct siop_gsc_softc { struct siop_softc sc_siop; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; struct hppa_bus_space_tag sc_bustag; }; const struct cfattach siop_gsc_ca = { sizeof(struct siop_gsc_softc), siop_gsc_match, siop_gsc_attach }; int siop_gsc_match(struct device *parent, void *match, void *aux) { struct gsc_attach_args *ga = aux; if (ga->ga_type.iodc_type != HPPA_TYPE_FIO || ga->ga_type.iodc_sv_model != HPPA_FIO_FWSCSI) return 0; return 1; } void siop_gsc_attach(struct device *parent, struct device *self, void *aux) { struct siop_gsc_softc *sc = (struct siop_gsc_softc *)self; struct gsc_attach_args *ga = aux; sc->sc_iot = ga->ga_iot; if (bus_space_map(sc->sc_iot, ga->ga_hpa, IOMOD_HPASIZE, 0, &sc->sc_ioh)) { printf(": cannot map io space\n"); return; } sc->sc_bustag = *sc->sc_iot; sc->sc_bustag.hbt_r1 = siop_gsc_r1; sc->sc_bustag.hbt_r2 = siop_gsc_r2; sc->sc_bustag.hbt_w1 = siop_gsc_w1; sc->sc_bustag.hbt_w2 = siop_gsc_w2; sc->sc_siop.sc_c.features = SF_CHIP_PF | SF_CHIP_BE | SF_BUS_WIDE; sc->sc_siop.sc_c.maxburst = 4; sc->sc_siop.sc_c.maxoff = 8; sc->sc_siop.sc_c.clock_div = 3; sc->sc_siop.sc_c.clock_period = 250; sc->sc_siop.sc_c.ram_size = 0; sc->sc_siop.sc_c.sc_reset = siop_gsc_reset; sc->sc_siop.sc_c.sc_dmat = ga->ga_dmatag; sc->sc_siop.sc_c.sc_rt = &sc->sc_bustag; bus_space_subregion(sc->sc_iot, sc->sc_ioh, SIOP_GSC_OFFSET, IOMOD_HPASIZE - SIOP_GSC_OFFSET, &sc->sc_siop.sc_c.sc_rh); /* * Reset the SCSI subsystem. */ bus_space_write_1(sc->sc_iot, sc->sc_ioh, SIOP_GSC_RESET, 0); DELAY(1000); siop_gsc_reset(&sc->sc_siop.sc_c); gsc_intr_establish((struct gsc_softc *)parent, ga->ga_irq, IPL_BIO, siop_intr, sc, sc->sc_siop.sc_c.sc_dev.dv_xname); printf(": NCR53C720 rev %d\n", bus_space_read_1(sc->sc_siop.sc_c.sc_rt, sc->sc_siop.sc_c.sc_rh, SIOP_CTEST3) >> 4); siop_attach(&sc->sc_siop); } void siop_gsc_reset(struct siop_common_softc *sc) { bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_DCNTL, DCNTL_EA); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST0, CTEST0_EHP); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST4, CTEST4_MUX); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STIME0, (0xc << STIME0_SEL_SHIFT)); } u_int8_t siop_gsc_r1(void *v, bus_space_handle_t h, bus_size_t o) { return *(volatile u_int8_t *)(h + (o ^ 3)); } u_int16_t siop_gsc_r2(void *v, bus_space_handle_t h, bus_size_t o) { if (o == SIOP_SIST0) { u_int16_t reg; reg = siop_gsc_r1(v, h, SIOP_SIST0); reg |= siop_gsc_r1(v, h, SIOP_SIST1) << 8; return reg; } return *(volatile u_int16_t *)(h + (o ^ 2)); } void siop_gsc_w1(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t vv) { *(volatile u_int8_t *)(h + (o ^ 3)) = vv; } void siop_gsc_w2(void *v, bus_space_handle_t h, bus_size_t o, u_int16_t vv) { *(volatile u_int16_t *)(h + (o ^ 2)) = vv; }