1 /* $NetBSD: wdc_pioc.c,v 1.31 2023/12/20 06:13:59 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1997-1998 Mark Brinicombe. 5 * Copyright (c) 1997 Causality Limited. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Mark Brinicombe 18 * for the NetBSD Project. 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: wdc_pioc.c,v 1.31 2023/12/20 06:13:59 thorpej Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 #include <sys/bus.h> 43 44 #include <machine/intr.h> 45 46 #include <acorn32/mainbus/piocvar.h> 47 48 #include <dev/ata/atavar.h> 49 #include <dev/ic/wdcreg.h> 50 #include <dev/ic/wdcvar.h> 51 52 #include "locators.h" 53 54 #define WDC_PIOC_REG_NPORTS 8 55 #define WDC_PIOC_AUXREG_OFFSET (0x206 * 4) 56 #define WDC_PIOC_AUXREG_NPORTS 1 57 58 struct wdc_pioc_softc { 59 struct wdc_softc sc_wdcdev; 60 struct ata_channel *sc_chanlist[1]; 61 struct ata_channel sc_channel; 62 struct wdc_regs sc_wdc_regs; 63 void *sc_ih; 64 }; 65 66 /* prototypes for functions */ 67 static int wdc_pioc_probe (device_t, cfdata_t, void *); 68 static void wdc_pioc_attach (device_t, device_t, void *); 69 70 /* device attach structure */ 71 CFATTACH_DECL_NEW(wdc_pioc, sizeof(struct wdc_pioc_softc), 72 wdc_pioc_probe, wdc_pioc_attach, NULL, NULL); 73 74 /* 75 * int wdc_pioc_probe(device_t parent, cfdata_t cf, void *aux) 76 * 77 * Make sure we are trying to attach a wdc device and then 78 * probe for one. 79 */ 80 81 static int 82 wdc_pioc_probe(device_t parent, cfdata_t cf, void *aux) 83 { 84 struct pioc_attach_args *pa = aux; 85 struct wdc_regs wdr; 86 int res, i; 87 u_int iobase; 88 89 if (pa->pa_name && strcmp(pa->pa_name, "wdc") != 0) 90 return(0); 91 92 /* We need an offset */ 93 if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT) 94 return(0); 95 96 iobase = pa->pa_iobase + pa->pa_offset; 97 wdr.cmd_iot = pa->pa_iot; 98 wdr.ctl_iot = pa->pa_iot; 99 100 if (bus_space_map(wdr.cmd_iot, iobase, WDC_PIOC_REG_NPORTS, 0, 101 &wdr.cmd_baseioh)) 102 return(0); 103 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 104 if (bus_space_subregion(wdr.cmd_iot, wdr.cmd_baseioh, i, 105 i == 0 ? 4 : 1, &wdr.cmd_iohs[i]) != 0) { 106 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, 107 WDC_PIOC_REG_NPORTS); 108 return 0; 109 } 110 } 111 wdc_init_shadow_regs(&wdr); 112 113 if (bus_space_map(wdr.ctl_iot, iobase + WDC_PIOC_AUXREG_OFFSET, 114 WDC_PIOC_AUXREG_NPORTS, 0, &wdr.ctl_ioh)) { 115 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, 116 WDC_PIOC_REG_NPORTS); 117 return(0); 118 } 119 120 res = wdcprobe(&wdr); 121 122 bus_space_unmap(wdr.ctl_iot, wdr.ctl_ioh, WDC_PIOC_AUXREG_NPORTS); 123 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, WDC_PIOC_REG_NPORTS); 124 125 if (res) 126 pa->pa_iosize = WDC_PIOC_REG_NPORTS; 127 return(res); 128 } 129 130 /* 131 * void wdc_pioc_attach(device_t parent, device_t self, void *aux) 132 * 133 * attach the wdc device 134 */ 135 136 static void 137 wdc_pioc_attach(device_t parent, device_t self, void *aux) 138 { 139 struct wdc_pioc_softc *sc = device_private(self); 140 struct wdc_regs *wdr; 141 struct pioc_attach_args *pa = aux; 142 u_int iobase; 143 int i; 144 145 aprint_normal("\n"); 146 147 sc->sc_wdcdev.sc_atac.atac_dev = self; 148 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 149 iobase = pa->pa_iobase + pa->pa_offset; 150 wdr->cmd_iot = pa->pa_iot; 151 wdr->ctl_iot = pa->pa_iot; 152 if (bus_space_map(wdr->cmd_iot, iobase, 153 WDC_PIOC_REG_NPORTS, 0, &wdr->cmd_baseioh)) 154 panic("%s: couldn't map drive registers", device_xname(self)); 155 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 156 if (bus_space_subregion(wdr->cmd_iot, 157 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 158 &wdr->cmd_iohs[i]) != 0) 159 panic("%s: couldn't submap drive registers", 160 device_xname(self)); 161 } 162 163 if (bus_space_map(wdr->ctl_iot, 164 iobase + WDC_PIOC_AUXREG_OFFSET, WDC_PIOC_AUXREG_NPORTS, 0, 165 &wdr->ctl_ioh)) 166 panic("%s: couldn't map aux registers", device_xname(self)); 167 168 sc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc", wdcintr, 169 &sc->sc_channel); 170 if (!sc->sc_ih) 171 panic("%s: Cannot claim IRQ %d", device_xname(self), 172 pa->pa_irq); 173 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 174 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 175 sc->sc_chanlist[0] = &sc->sc_channel; 176 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 177 sc->sc_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 178 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 179 sc->sc_wdcdev.wdc_maxdrives = 2; 180 sc->sc_channel.ch_channel = 0; 181 182 wdc_init_shadow_regs(wdr); 183 184 wdcattach(&sc->sc_channel); 185 } 186 187 /* End of wdc_pioc.c */ 188
Indexes created Mon Sep 29 21:09:56 GMT 2025