1 /* $NetBSD: osiop_gsc.c,v 1.2 2022/09/29 06:39:58 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Matt Fredette. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /*- 30 * Copyright (c) 2001, 2002 Izumi Tsutsui. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 41 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 42 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 44 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 45 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 47 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 48 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 50 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 51 */ 52 53 /* $OpenBSD: siop_gsc.c,v 1.1 1998/11/04 17:01:35 mickey Exp $ */ 54 55 /* 56 * Copyright (c) 1998 Michael Shalayeff 57 * All rights reserved. 58 * 59 * Redistribution and use in source and binary forms, with or without 60 * modification, are permitted provided that the following conditions 61 * are met: 62 * 1. Redistributions of source code must retain the above copyright 63 * notice, this list of conditions and the following disclaimer. 64 * 2. Redistributions in binary form must reproduce the above copyright 65 * notice, this list of conditions and the following disclaimer in the 66 * documentation and/or other materials provided with the distribution. 67 * 3. The name of the author may not be used to endorse or promote products 68 * derived from this software without specific prior written permission. 69 * 70 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 71 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 72 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 73 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 74 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 75 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 76 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 77 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 78 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 79 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 80 */ 81 82 #include <sys/cdefs.h> 83 __KERNEL_RCSID(0, "$NetBSD: osiop_gsc.c,v 1.2 2022/09/29 06:39:58 skrll Exp $"); 84 85 #include <sys/param.h> 86 #include <sys/systm.h> 87 #include <sys/device.h> 88 #include <sys/buf.h> 89 90 #include <dev/scsipi/scsi_all.h> 91 #include <dev/scsipi/scsipi_all.h> 92 #include <dev/scsipi/scsiconf.h> 93 94 #include <machine/cpu.h> 95 #include <machine/intr.h> 96 #include <machine/iomod.h> 97 #include <machine/autoconf.h> 98 #include <sys/bus.h> 99 100 #include <dev/ic/osiopreg.h> 101 #include <dev/ic/osiopvar.h> 102 103 #include <hppa/dev/cpudevs.h> 104 #include <hppa/gsc/gscbusvar.h> 105 #include <hppa/hppa/machdep.h> 106 107 #define OSIOP_GSC_RESET 0x0000 108 #define OSIOP_GSC_OFFSET 0x0100 109 110 int osiop_gsc_match(device_t, cfdata_t, void *); 111 void osiop_gsc_attach(device_t, device_t, void *); 112 int osiop_gsc_intr(void *); 113 114 CFATTACH_DECL_NEW(osiop_gsc, sizeof(struct osiop_softc), 115 osiop_gsc_match, osiop_gsc_attach, NULL, NULL); 116 117 int 118 osiop_gsc_match(device_t parent, cfdata_t cf, void *aux) 119 { 120 struct gsc_attach_args *ga = aux; 121 bus_space_handle_t ioh; 122 int rv = 1; 123 124 if (ga->ga_type.iodc_type != HPPA_TYPE_FIO || 125 (ga->ga_type.iodc_sv_model != HPPA_FIO_GSCSI)) 126 return 0; 127 128 if (bus_space_map(ga->ga_iot, ga->ga_hpa, 129 OSIOP_GSC_OFFSET + OSIOP_NREGS, 0, &ioh)) 130 return 0; 131 132 133 bus_space_unmap(ga->ga_iot, ioh, OSIOP_GSC_OFFSET + OSIOP_NREGS); 134 return rv; 135 } 136 137 void 138 osiop_gsc_attach(device_t parent, device_t self, void *aux) 139 { 140 struct osiop_softc *sc = device_private(self); 141 struct gsc_attach_args *ga = aux; 142 bus_space_handle_t ioh; 143 144 sc->sc_dev = self; 145 sc->sc_bst = ga->ga_iot; 146 sc->sc_dmat = ga->ga_dmatag; 147 if (bus_space_map(sc->sc_bst, ga->ga_hpa, 148 OSIOP_GSC_OFFSET + OSIOP_NREGS, 0, &ioh)) { 149 aprint_error(": couldn't map I/O ports\n"); 150 return; 151 } 152 if (bus_space_subregion(sc->sc_bst, ioh, 153 OSIOP_GSC_OFFSET, OSIOP_NREGS, &sc->sc_reg)) { 154 aprint_error(": couldn't get chip ports\n"); 155 return; 156 } 157 158 sc->sc_clock_freq = ga->ga_ca.ca_pir.filler2[14] / 1000000; 159 if (!sc->sc_clock_freq) 160 sc->sc_clock_freq = 50; 161 162 sc->sc_ctest7 = 0; /* | OSIOP_CTEST7_TT1 */ 163 sc->sc_dcntl = OSIOP_DCNTL_EA; 164 165 sc->sc_flags = 0; 166 sc->sc_id = ga->ga_scsi_target; 167 168 /* 169 * Reset the SCSI subsystem. 170 */ 171 bus_space_write_1(sc->sc_bst, ioh, OSIOP_GSC_RESET, 0); 172 DELAY(1000); 173 174 /* 175 * Call common attachment 176 */ 177 #ifdef OSIOP_DEBUG 178 { 179 extern int osiop_debug; 180 osiop_debug = -1; 181 } 182 #endif /* OSIOP_DEBUG */ 183 osiop_attach(sc); 184 185 (void)hppa_intr_establish(IPL_BIO, osiop_gsc_intr, sc, ga->ga_ir, 186 ga->ga_irq); 187 } 188 189 /* 190 * interrupt handler 191 */ 192 int 193 osiop_gsc_intr(void *arg) 194 { 195 struct osiop_softc *sc = arg; 196 uint8_t istat; 197 198 /* This is potentially nasty, since the IRQ is level triggered... */ 199 if (sc->sc_flags & OSIOP_INTSOFF) 200 return (0); 201 202 istat = osiop_read_1(sc, OSIOP_ISTAT); 203 204 if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) 205 return (0); 206 207 /* Save interrupt details for the back-end interrupt handler */ 208 sc->sc_sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); 209 sc->sc_istat = istat; 210 /* 211 * Per page 4-18 of the LSI 53C710 Technical Manual, 212 * "insert a delay equivalent to 12 BCLK periods between 213 * the reads [of DSTAT and SSTAT0] to ensure that the 214 * interrupts clear properly." 215 */ 216 DELAY(100); 217 sc->sc_dstat = osiop_read_1(sc, OSIOP_DSTAT); 218 219 /* Deal with the interrupt */ 220 osiop_intr(sc); 221 222 /* Blink the LED. */ 223 hppa_led_blink(HPPA_LED_DISK); 224 225 return (1); 226 } 227
Indexes created Mon Oct 27 20:09:55 GMT 2025