wdc_pioc.c revision 1.11
1 /* $NetBSD: wdc_pioc.c,v 1.11 2003/12/02 23:47:20 bjh21 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 1.11 2003/12/02 23:47:20 bjh21 Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 #include <sys/malloc.h> 43 44 #include <machine/bus.h> 45 #include <machine/intr.h> 46 47 #include <acorn32/mainbus/piocvar.h> 48 49 #include <dev/ata/atavar.h> 50 #include <dev/ic/wdcreg.h> 51 #include <dev/ic/wdcvar.h> 52 53 #include "locators.h" 54 55 #define WDC_PIOC_REG_NPORTS 8 56 #define WDC_PIOC_AUXREG_OFFSET (0x206 * 4) 57 #define WDC_PIOC_AUXREG_NPORTS 1 58 59 struct wdc_pioc_softc { 60 struct wdc_softc sc_wdcdev; 61 struct channel_softc *wdc_chanptr; 62 struct channel_softc wdc_channel; 63 void *sc_ih; 64 }; 65 66 /* prototypes for functions */ 67 static int wdc_pioc_probe __P((struct device *, struct cfdata *, void *)); 68 static void wdc_pioc_attach __P((struct device *, struct device *, void *)); 69 70 /* device attach structure */ 71 CFATTACH_DECL(wdc_pioc, sizeof(struct wdc_pioc_softc), 72 wdc_pioc_probe, wdc_pioc_attach, NULL, NULL); 73 74 /* 75 * int wdc_pioc_probe(struct device *parent, struct cfdata *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(parent, cf, aux) 83 struct device *parent; 84 struct cfdata *cf; 85 void *aux; 86 { 87 struct pioc_attach_args *pa = aux; 88 struct channel_softc ch; 89 int res, i; 90 u_int iobase; 91 92 if (pa->pa_name && strcmp(pa->pa_name, "wdc") != 0) 93 return(0); 94 95 /* We need an offset */ 96 if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT) 97 return(0); 98 99 memset(&ch, 0, sizeof(ch)); 100 101 iobase = pa->pa_iobase + pa->pa_offset; 102 ch.cmd_iot = pa->pa_iot; 103 ch.ctl_iot = pa->pa_iot; 104 105 if (bus_space_map(ch.cmd_iot, iobase, WDC_PIOC_REG_NPORTS, 0, 106 &ch.cmd_baseioh)) 107 return(0); 108 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 109 if (bus_space_subregion(ch.cmd_iot, ch.cmd_baseioh, i, 110 i == 0 ? 4 : 1, &ch.cmd_iohs[i]) != 0) { 111 bus_space_unmap(ch.cmd_iot, ch.cmd_baseioh, 112 WDC_PIOC_REG_NPORTS); 113 return 0; 114 } 115 } 116 117 if (bus_space_map(ch.ctl_iot, iobase + WDC_PIOC_AUXREG_OFFSET, 118 WDC_PIOC_AUXREG_NPORTS, 0, &ch.ctl_ioh)) { 119 bus_space_unmap(ch.cmd_iot, ch.cmd_baseioh, 120 WDC_PIOC_REG_NPORTS); 121 return(0); 122 } 123 124 res = wdcprobe(&ch); 125 126 bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_PIOC_AUXREG_NPORTS); 127 bus_space_unmap(ch.cmd_iot, ch.cmd_baseioh, WDC_PIOC_REG_NPORTS); 128 129 if (res) 130 pa->pa_iosize = WDC_PIOC_REG_NPORTS; 131 return(res); 132 } 133 134 /* 135 * void wdc_pioc_attach(struct device *parent, struct device *self, void *aux) 136 * 137 * attach the wdc device 138 */ 139 140 static void 141 wdc_pioc_attach(parent, self, aux) 142 struct device *parent, *self; 143 void *aux; 144 { 145 struct wdc_pioc_softc *sc = (void *)self; 146 struct pioc_attach_args *pa = aux; 147 u_int iobase; 148 int i; 149 150 printf("\n"); 151 152 iobase = pa->pa_iobase + pa->pa_offset; 153 sc->wdc_channel.cmd_iot = pa->pa_iot; 154 sc->wdc_channel.ctl_iot = pa->pa_iot; 155 if (bus_space_map(sc->wdc_channel.cmd_iot, iobase, 156 WDC_PIOC_REG_NPORTS, 0, &sc->wdc_channel.cmd_baseioh)) 157 panic("%s: couldn't map drive registers", self->dv_xname); 158 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 159 if (bus_space_subregion(sc->wdc_channel.cmd_iot, 160 sc->wdc_channel.cmd_baseioh, i, i == 0 ? 4 : 1, 161 &sc->wdc_channel.cmd_iohs[i]) != 0) 162 panic("%s: couldn't submap drive registers", 163 self->dv_xname); 164 } 165 166 if (bus_space_map(sc->wdc_channel.ctl_iot, 167 iobase + WDC_PIOC_AUXREG_OFFSET, WDC_PIOC_AUXREG_NPORTS, 0, 168 &sc->wdc_channel.ctl_ioh)) 169 panic("%s: couldn't map aux registers", self->dv_xname); 170 171 sc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc", wdcintr, 172 &sc->wdc_channel); 173 if (!sc->sc_ih) 174 panic("%s: Cannot claim IRQ %d", self->dv_xname, pa->pa_irq); 175 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16; 176 sc->sc_wdcdev.PIO_cap = 0; 177 sc->wdc_chanptr = &sc->wdc_channel; 178 sc->sc_wdcdev.channels = &sc->wdc_chanptr; 179 sc->wdc_channel.wdc = &sc->sc_wdcdev; 180 sc->sc_wdcdev.nchannels = 1; 181 sc->wdc_channel.channel = 0; 182 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 183 M_DEVBUF, M_NOWAIT); 184 if (sc->wdc_channel.ch_queue == NULL) { 185 printf("%s: can't allocate memory for command queue", 186 sc->sc_wdcdev.sc_dev.dv_xname); 187 return; 188 } 189 190 wdcattach(&sc->wdc_channel); 191 } 192 193 /* End of wdc_pioc.c */ 194
Indexes created Thu Oct 23 22:10:10 GMT 2025