1 /* $NetBSD: wdc_pioc.c,v 1.25 2011/07/19 15:59:53 dyoung 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 1.25 2011/07/19 15:59:53 dyoung Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 #include <sys/malloc.h> 43 #include <sys/bus.h> 44 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 ata_channel *sc_chanlist[1]; 62 struct ata_channel sc_channel; 63 struct ata_queue sc_chqueue; 64 struct wdc_regs sc_wdc_regs; 65 void *sc_ih; 66 }; 67 68 /* prototypes for functions */ 69 static int wdc_pioc_probe (device_t, cfdata_t, void *); 70 static void wdc_pioc_attach (device_t, device_t, void *); 71 72 /* device attach structure */ 73 CFATTACH_DECL_NEW(wdc_pioc, sizeof(struct wdc_pioc_softc), 74 wdc_pioc_probe, wdc_pioc_attach, NULL, NULL); 75 76 /* 77 * int wdc_pioc_probe(device_t parent, cfdata_t cf, void *aux) 78 * 79 * Make sure we are trying to attach a wdc device and then 80 * probe for one. 81 */ 82 83 static int 84 wdc_pioc_probe(device_t parent, cfdata_t cf, void *aux) 85 { 86 struct pioc_attach_args *pa = aux; 87 struct ata_channel ch; 88 struct wdc_softc wdc; 89 struct wdc_regs wdr; 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(&wdc, 0, sizeof(wdc)); 101 memset(&ch, 0, sizeof(ch)); 102 ch.ch_atac = &wdc.sc_atac; 103 wdc.regs = &wdr; 104 105 iobase = pa->pa_iobase + pa->pa_offset; 106 wdr.cmd_iot = pa->pa_iot; 107 wdr.ctl_iot = pa->pa_iot; 108 109 if (bus_space_map(wdr.cmd_iot, iobase, WDC_PIOC_REG_NPORTS, 0, 110 &wdr.cmd_baseioh)) 111 return(0); 112 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 113 if (bus_space_subregion(wdr.cmd_iot, wdr.cmd_baseioh, i, 114 i == 0 ? 4 : 1, &wdr.cmd_iohs[i]) != 0) { 115 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, 116 WDC_PIOC_REG_NPORTS); 117 return 0; 118 } 119 } 120 wdc_init_shadow_regs(&ch); 121 122 if (bus_space_map(wdr.ctl_iot, iobase + WDC_PIOC_AUXREG_OFFSET, 123 WDC_PIOC_AUXREG_NPORTS, 0, &wdr.ctl_ioh)) { 124 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, 125 WDC_PIOC_REG_NPORTS); 126 return(0); 127 } 128 129 res = wdcprobe(&ch); 130 131 bus_space_unmap(wdr.ctl_iot, wdr.ctl_ioh, WDC_PIOC_AUXREG_NPORTS); 132 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, WDC_PIOC_REG_NPORTS); 133 134 if (res) 135 pa->pa_iosize = WDC_PIOC_REG_NPORTS; 136 return(res); 137 } 138 139 /* 140 * void wdc_pioc_attach(device_t parent, device_t self, void *aux) 141 * 142 * attach the wdc device 143 */ 144 145 static void 146 wdc_pioc_attach(device_t parent, device_t self, void *aux) 147 { 148 struct wdc_pioc_softc *sc = device_private(self); 149 struct wdc_regs *wdr; 150 struct pioc_attach_args *pa = aux; 151 u_int iobase; 152 int i; 153 154 aprint_normal("\n"); 155 156 sc->sc_wdcdev.sc_atac.atac_dev = self; 157 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 158 iobase = pa->pa_iobase + pa->pa_offset; 159 wdr->cmd_iot = pa->pa_iot; 160 wdr->ctl_iot = pa->pa_iot; 161 if (bus_space_map(wdr->cmd_iot, iobase, 162 WDC_PIOC_REG_NPORTS, 0, &wdr->cmd_baseioh)) 163 panic("%s: couldn't map drive registers", device_xname(self)); 164 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 165 if (bus_space_subregion(wdr->cmd_iot, 166 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 167 &wdr->cmd_iohs[i]) != 0) 168 panic("%s: couldn't submap drive registers", 169 device_xname(self)); 170 } 171 172 if (bus_space_map(wdr->ctl_iot, 173 iobase + WDC_PIOC_AUXREG_OFFSET, WDC_PIOC_AUXREG_NPORTS, 0, 174 &wdr->ctl_ioh)) 175 panic("%s: couldn't map aux registers", device_xname(self)); 176 177 sc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc", wdcintr, 178 &sc->sc_channel); 179 if (!sc->sc_ih) 180 panic("%s: Cannot claim IRQ %d", device_xname(self), 181 pa->pa_irq); 182 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 183 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 184 sc->sc_chanlist[0] = &sc->sc_channel; 185 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 186 sc->sc_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 187 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 188 sc->sc_channel.ch_channel = 0; 189 sc->sc_channel.ch_queue = &sc->sc_chqueue; 190 sc->sc_channel.ch_ndrive = 2; 191 192 wdc_init_shadow_regs(&sc->sc_channel); 193 194 wdcattach(&sc->sc_channel); 195 } 196 197 /* End of wdc_pioc.c */ 198