1 /* $OpenBSD: siop_gsc.c,v 1.4 2007/08/23 21:01:22 kettenis Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Mark Kettenis 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/param.h> 20 #include <sys/device.h> 21 #include <sys/systm.h> 22 23 #include <machine/autoconf.h> 24 #include <machine/bus.h> 25 #include <machine/iomod.h> 26 27 #include <scsi/scsi_all.h> 28 #include <scsi/scsiconf.h> 29 30 #include <dev/ic/siopreg.h> 31 #include <dev/ic/siopvar_common.h> 32 #include <dev/ic/siopvar.h> 33 34 #include <hppa/dev/cpudevs.h> 35 #include <hppa/gsc/gscbusvar.h> 36 37 #define SIOP_GSC_RESET 0x0000 38 #define SIOP_GSC_OFFSET 0x0100 39 40 int siop_gsc_match(struct device *, void *, void *); 41 void siop_gsc_attach(struct device *, struct device *, void *); 42 int siop_gsc_intr(void *); 43 void siop_gsc_reset(struct siop_common_softc *); 44 45 u_int8_t siop_gsc_r1(void *, bus_space_handle_t, bus_size_t); 46 u_int16_t siop_gsc_r2(void *, bus_space_handle_t, bus_size_t); 47 void siop_gsc_w1(void *, bus_space_handle_t, bus_size_t, u_int8_t); 48 void siop_gsc_w2(void *, bus_space_handle_t, bus_size_t, u_int16_t); 49 50 struct siop_gsc_softc { 51 struct siop_softc sc_siop; 52 bus_space_tag_t sc_iot; 53 bus_space_handle_t sc_ioh; 54 struct hppa_bus_space_tag sc_bustag; 55 }; 56 57 struct cfattach siop_gsc_ca = { 58 sizeof(struct siop_gsc_softc), siop_gsc_match, siop_gsc_attach 59 }; 60 61 int 62 siop_gsc_match(struct device *parent, void *match, void *aux) 63 { 64 struct gsc_attach_args *ga = aux; 65 66 if (ga->ga_type.iodc_type != HPPA_TYPE_FIO || 67 ga->ga_type.iodc_sv_model != HPPA_FIO_FWSCSI) 68 return 0; 69 70 return 1; 71 } 72 73 void 74 siop_gsc_attach(struct device *parent, struct device *self, void *aux) 75 { 76 struct siop_gsc_softc *sc = (struct siop_gsc_softc *)self; 77 struct gsc_attach_args *ga = aux; 78 79 sc->sc_iot = ga->ga_iot; 80 if (bus_space_map(sc->sc_iot, ga->ga_hpa, 81 IOMOD_HPASIZE, 0, &sc->sc_ioh)) { 82 printf(": cannot map io space\n"); 83 return; 84 } 85 86 sc->sc_bustag = *sc->sc_iot; 87 sc->sc_bustag.hbt_r1 = siop_gsc_r1; 88 sc->sc_bustag.hbt_r2 = siop_gsc_r2; 89 sc->sc_bustag.hbt_w1 = siop_gsc_w1; 90 sc->sc_bustag.hbt_w2 = siop_gsc_w2; 91 92 sc->sc_siop.sc_c.features = SF_CHIP_PF | SF_CHIP_BE | SF_BUS_WIDE; 93 sc->sc_siop.sc_c.maxburst = 4; 94 sc->sc_siop.sc_c.maxoff = 8; 95 sc->sc_siop.sc_c.clock_div = 3; 96 sc->sc_siop.sc_c.clock_period = 250; 97 sc->sc_siop.sc_c.ram_size = 0; 98 99 sc->sc_siop.sc_c.sc_reset = siop_gsc_reset; 100 sc->sc_siop.sc_c.sc_dmat = ga->ga_dmatag; 101 102 sc->sc_siop.sc_c.sc_rt = &sc->sc_bustag; 103 bus_space_subregion(sc->sc_iot, sc->sc_ioh, SIOP_GSC_OFFSET, 104 IOMOD_HPASIZE - SIOP_GSC_OFFSET, &sc->sc_siop.sc_c.sc_rh); 105 106 /* 107 * Reset the SCSI subsystem. 108 */ 109 bus_space_write_1(sc->sc_iot, sc->sc_ioh, SIOP_GSC_RESET, 0); 110 DELAY(1000); 111 siop_gsc_reset(&sc->sc_siop.sc_c); 112 113 gsc_intr_establish((struct gsc_softc *)parent, ga->ga_irq, 114 IPL_BIO, siop_intr, sc, sc->sc_siop.sc_c.sc_dev.dv_xname); 115 116 printf(": NCR53C720 rev %d\n", bus_space_read_1(sc->sc_siop.sc_c.sc_rt, 117 sc->sc_siop.sc_c.sc_rh, SIOP_CTEST3) >> 4); 118 119 siop_attach(&sc->sc_siop); 120 } 121 122 void 123 siop_gsc_reset(struct siop_common_softc *sc) 124 { 125 bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_DCNTL, DCNTL_EA); 126 bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST0, CTEST0_EHP); 127 bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST4, CTEST4_MUX); 128 129 bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STIME0, 130 (0xc << STIME0_SEL_SHIFT)); 131 } 132 133 u_int8_t 134 siop_gsc_r1(void *v, bus_space_handle_t h, bus_size_t o) 135 { 136 return *(volatile u_int8_t *)(h + (o ^ 3)); 137 } 138 139 u_int16_t 140 siop_gsc_r2(void *v, bus_space_handle_t h, bus_size_t o) 141 { 142 if (o == SIOP_SIST0) { 143 u_int16_t reg; 144 145 reg = siop_gsc_r1(v, h, SIOP_SIST0); 146 reg |= siop_gsc_r1(v, h, SIOP_SIST1) << 8; 147 return reg; 148 } 149 return *(volatile u_int16_t *)(h + (o ^ 2)); 150 } 151 152 void 153 siop_gsc_w1(void *v, bus_space_handle_t h, bus_size_t o, u_int8_t vv) 154 { 155 *(volatile u_int8_t *)(h + (o ^ 3)) = vv; 156 } 157 158 void 159 siop_gsc_w2(void *v, bus_space_handle_t h, bus_size_t o, u_int16_t vv) 160 { 161 *(volatile u_int16_t *)(h + (o ^ 2)) = vv; 162 } 163