wdc_pioc.c revision 1.16
1 /* $NetBSD: wdc_pioc.c,v 1.16 2004/05/25 20:42:40 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 1.16 2004/05/25 20:42:40 thorpej 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 wdc_channel *wdc_chanlist[1]; 62 struct wdc_channel wdc_channel; 63 struct ata_queue wdc_chqueue; 64 void *sc_ih; 65 }; 66 67 /* prototypes for functions */ 68 static int wdc_pioc_probe __P((struct device *, struct cfdata *, void *)); 69 static void wdc_pioc_attach __P((struct device *, struct device *, void *)); 70 71 /* device attach structure */ 72 CFATTACH_DECL(wdc_pioc, sizeof(struct wdc_pioc_softc), 73 wdc_pioc_probe, wdc_pioc_attach, NULL, NULL); 74 75 /* 76 * int wdc_pioc_probe(struct device *parent, struct cfdata *cf, void *aux) 77 * 78 * Make sure we are trying to attach a wdc device and then 79 * probe for one. 80 */ 81 82 static int 83 wdc_pioc_probe(parent, cf, aux) 84 struct device *parent; 85 struct cfdata *cf; 86 void *aux; 87 { 88 struct pioc_attach_args *pa = aux; 89 struct wdc_channel ch; 90 int res, i; 91 u_int iobase; 92 93 if (pa->pa_name && strcmp(pa->pa_name, "wdc") != 0) 94 return(0); 95 96 /* We need an offset */ 97 if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT) 98 return(0); 99 100 memset(&ch, 0, sizeof(ch)); 101 102 iobase = pa->pa_iobase + pa->pa_offset; 103 ch.cmd_iot = pa->pa_iot; 104 ch.ctl_iot = pa->pa_iot; 105 106 if (bus_space_map(ch.cmd_iot, iobase, WDC_PIOC_REG_NPORTS, 0, 107 &ch.cmd_baseioh)) 108 return(0); 109 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 110 if (bus_space_subregion(ch.cmd_iot, ch.cmd_baseioh, i, 111 i == 0 ? 4 : 1, &ch.cmd_iohs[i]) != 0) { 112 bus_space_unmap(ch.cmd_iot, ch.cmd_baseioh, 113 WDC_PIOC_REG_NPORTS); 114 return 0; 115 } 116 } 117 wdc_init_shadow_regs(&ch); 118 119 if (bus_space_map(ch.ctl_iot, iobase + WDC_PIOC_AUXREG_OFFSET, 120 WDC_PIOC_AUXREG_NPORTS, 0, &ch.ctl_ioh)) { 121 bus_space_unmap(ch.cmd_iot, ch.cmd_baseioh, 122 WDC_PIOC_REG_NPORTS); 123 return(0); 124 } 125 126 res = wdcprobe(&ch); 127 128 bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_PIOC_AUXREG_NPORTS); 129 bus_space_unmap(ch.cmd_iot, ch.cmd_baseioh, WDC_PIOC_REG_NPORTS); 130 131 if (res) 132 pa->pa_iosize = WDC_PIOC_REG_NPORTS; 133 return(res); 134 } 135 136 /* 137 * void wdc_pioc_attach(struct device *parent, struct device *self, void *aux) 138 * 139 * attach the wdc device 140 */ 141 142 static void 143 wdc_pioc_attach(parent, self, aux) 144 struct device *parent, *self; 145 void *aux; 146 { 147 struct wdc_pioc_softc *sc = (void *)self; 148 struct pioc_attach_args *pa = aux; 149 u_int iobase; 150 int i; 151 152 printf("\n"); 153 154 iobase = pa->pa_iobase + pa->pa_offset; 155 sc->wdc_channel.cmd_iot = pa->pa_iot; 156 sc->wdc_channel.ctl_iot = pa->pa_iot; 157 if (bus_space_map(sc->wdc_channel.cmd_iot, iobase, 158 WDC_PIOC_REG_NPORTS, 0, &sc->wdc_channel.cmd_baseioh)) 159 panic("%s: couldn't map drive registers", self->dv_xname); 160 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 161 if (bus_space_subregion(sc->wdc_channel.cmd_iot, 162 sc->wdc_channel.cmd_baseioh, i, i == 0 ? 4 : 1, 163 &sc->wdc_channel.cmd_iohs[i]) != 0) 164 panic("%s: couldn't submap drive registers", 165 self->dv_xname); 166 } 167 wdc_init_shadow_regs(&sc->wdc_channel); 168 169 if (bus_space_map(sc->wdc_channel.ctl_iot, 170 iobase + WDC_PIOC_AUXREG_OFFSET, WDC_PIOC_AUXREG_NPORTS, 0, 171 &sc->wdc_channel.ctl_ioh)) 172 panic("%s: couldn't map aux registers", self->dv_xname); 173 174 sc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc", wdcintr, 175 &sc->wdc_channel); 176 if (!sc->sc_ih) 177 panic("%s: Cannot claim IRQ %d", self->dv_xname, pa->pa_irq); 178 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16; 179 sc->sc_wdcdev.PIO_cap = 0; 180 sc->wdc_chanlist[0] = &sc->wdc_channel; 181 sc->sc_wdcdev.channels = sc->wdc_chanlist; 182 sc->wdc_channel.ch_wdc = &sc->sc_wdcdev; 183 sc->sc_wdcdev.nchannels = 1; 184 sc->wdc_channel.ch_channel = 0; 185 sc->wdc_channel.ch_queue = &sc->wdc_chqueue; 186 187 wdcattach(&sc->wdc_channel); 188 } 189 190 /* End of wdc_pioc.c */ 191
Indexes created Tue Oct 21 19:09:51 GMT 2025