wdc_pioc.c revision 1.7
1 /* $NetBSD: wdc_pioc.c,v 1.7 2003/07/14 22:48:25 lukem 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 1.7 2003/07/14 22:48:25 lukem 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/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 channel_softc *wdc_chanptr; 61 struct channel_softc wdc_channel; 62 void *sc_ih; 63 }; 64 65 /* prototypes for functions */ 66 static int wdc_pioc_probe __P((struct device *, struct cfdata *, void *)); 67 static void wdc_pioc_attach __P((struct device *, struct device *, void *)); 68 69 /* device attach structure */ 70 CFATTACH_DECL(wdc_pioc, sizeof(struct wdc_pioc_softc), 71 wdc_pioc_probe, wdc_pioc_attach, NULL, NULL); 72 73 /* 74 * int wdc_pioc_probe(struct device *parent, struct cfdata *cf, void *aux) 75 * 76 * Make sure we are trying to attach a wdc device and then 77 * probe for one. 78 */ 79 80 static int 81 wdc_pioc_probe(parent, cf, aux) 82 struct device *parent; 83 struct cfdata *cf; 84 void *aux; 85 { 86 struct pioc_attach_args *pa = aux; 87 struct channel_softc ch; 88 int res; 89 u_int iobase; 90 91 if (pa->pa_name && strcmp(pa->pa_name, "wdc") != 0) 92 return(0); 93 94 /* We need an offset */ 95 if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT) 96 return(0); 97 98 memset(&ch, 0, sizeof(ch)); 99 100 iobase = pa->pa_iobase + pa->pa_offset; 101 ch.cmd_iot = pa->pa_iot; 102 ch.ctl_iot = pa->pa_iot; 103 104 if (bus_space_map(ch.cmd_iot, iobase, WDC_PIOC_REG_NPORTS, 0, 105 &ch.cmd_ioh)) 106 return(0); 107 if (bus_space_map(ch.ctl_iot, iobase + WDC_PIOC_AUXREG_OFFSET, 108 WDC_PIOC_AUXREG_NPORTS, 0, &ch.ctl_ioh)) { 109 bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_PIOC_REG_NPORTS); 110 return(0); 111 } 112 113 res = wdcprobe(&ch); 114 115 bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_PIOC_AUXREG_NPORTS); 116 bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_PIOC_REG_NPORTS); 117 118 if (res) 119 pa->pa_iosize = WDC_PIOC_REG_NPORTS; 120 return(res); 121 } 122 123 /* 124 * void wdc_pioc_attach(struct device *parent, struct device *self, void *aux) 125 * 126 * attach the wdc device 127 */ 128 129 static void 130 wdc_pioc_attach(parent, self, aux) 131 struct device *parent, *self; 132 void *aux; 133 { 134 struct wdc_pioc_softc *sc = (void *)self; 135 struct pioc_attach_args *pa = aux; 136 u_int iobase; 137 138 printf("\n"); 139 140 iobase = pa->pa_iobase + pa->pa_offset; 141 sc->wdc_channel.cmd_iot = pa->pa_iot; 142 sc->wdc_channel.ctl_iot = pa->pa_iot; 143 if (bus_space_map(sc->wdc_channel.cmd_iot, iobase, 144 WDC_PIOC_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh)) 145 panic("%s: couldn't map drive registers", self->dv_xname); 146 147 if (bus_space_map(sc->wdc_channel.ctl_iot, 148 iobase + WDC_PIOC_AUXREG_OFFSET, WDC_PIOC_AUXREG_NPORTS, 0, 149 &sc->wdc_channel.ctl_ioh)) 150 panic("%s: couldn't map aux registers", self->dv_xname); 151 152 sc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc", wdcintr, 153 &sc->wdc_channel); 154 if (!sc->sc_ih) 155 panic("%s: Cannot claim IRQ %d", self->dv_xname, pa->pa_irq); 156 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16; 157 sc->sc_wdcdev.PIO_cap = 0; 158 sc->wdc_chanptr = &sc->wdc_channel; 159 sc->sc_wdcdev.channels = &sc->wdc_chanptr; 160 sc->wdc_channel.wdc = &sc->sc_wdcdev; 161 sc->sc_wdcdev.nchannels = 1; 162 sc->wdc_channel.channel = 0; 163 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 164 M_DEVBUF, M_NOWAIT); 165 if (sc->wdc_channel.ch_queue == NULL) { 166 printf("%s: can't allocate memory for command queue", 167 sc->sc_wdcdev.sc_dev.dv_xname); 168 return; 169 } 170 wdcattach(&sc->wdc_channel); 171 } 172 173 /* End of wdc_pioc.c */ 174
Indexes created Mon Oct 20 16:09:52 GMT 2025