wdc_pioc.c revision 1.29
1 /* $NetBSD: wdc_pioc.c,v 1.29 2017/10/07 16:05:31 jdolecek 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 1.29 2017/10/07 16:05:31 jdolecek 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 wdc_regs sc_wdc_regs; 64 void *sc_ih; 65 }; 66 67 /* prototypes for functions */ 68 static int wdc_pioc_probe (device_t, cfdata_t, void *); 69 static void wdc_pioc_attach (device_t, device_t, void *); 70 71 /* device attach structure */ 72 CFATTACH_DECL_NEW(wdc_pioc, sizeof(struct wdc_pioc_softc), 73 wdc_pioc_probe, wdc_pioc_attach, NULL, NULL); 74 75 /* 76 * int wdc_pioc_probe(device_t parent, cfdata_t 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(device_t parent, cfdata_t cf, void *aux) 84 { 85 struct pioc_attach_args *pa = aux; 86 struct wdc_regs wdr; 87 int res, i; 88 u_int iobase; 89 90 if (pa->pa_name && strcmp(pa->pa_name, "wdc") != 0) 91 return(0); 92 93 /* We need an offset */ 94 if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT) 95 return(0); 96 97 iobase = pa->pa_iobase + pa->pa_offset; 98 wdr.cmd_iot = pa->pa_iot; 99 wdr.ctl_iot = pa->pa_iot; 100 101 if (bus_space_map(wdr.cmd_iot, iobase, WDC_PIOC_REG_NPORTS, 0, 102 &wdr.cmd_baseioh)) 103 return(0); 104 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 105 if (bus_space_subregion(wdr.cmd_iot, wdr.cmd_baseioh, i, 106 i == 0 ? 4 : 1, &wdr.cmd_iohs[i]) != 0) { 107 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, 108 WDC_PIOC_REG_NPORTS); 109 return 0; 110 } 111 } 112 wdc_init_shadow_regs(&wdr); 113 114 if (bus_space_map(wdr.ctl_iot, iobase + WDC_PIOC_AUXREG_OFFSET, 115 WDC_PIOC_AUXREG_NPORTS, 0, &wdr.ctl_ioh)) { 116 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, 117 WDC_PIOC_REG_NPORTS); 118 return(0); 119 } 120 121 res = wdcprobe(&wdr); 122 123 bus_space_unmap(wdr.ctl_iot, wdr.ctl_ioh, WDC_PIOC_AUXREG_NPORTS); 124 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, WDC_PIOC_REG_NPORTS); 125 126 if (res) 127 pa->pa_iosize = WDC_PIOC_REG_NPORTS; 128 return(res); 129 } 130 131 /* 132 * void wdc_pioc_attach(device_t parent, device_t self, void *aux) 133 * 134 * attach the wdc device 135 */ 136 137 static void 138 wdc_pioc_attach(device_t parent, device_t self, void *aux) 139 { 140 struct wdc_pioc_softc *sc = device_private(self); 141 struct wdc_regs *wdr; 142 struct pioc_attach_args *pa = aux; 143 u_int iobase; 144 int i; 145 146 aprint_normal("\n"); 147 148 sc->sc_wdcdev.sc_atac.atac_dev = self; 149 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 150 iobase = pa->pa_iobase + pa->pa_offset; 151 wdr->cmd_iot = pa->pa_iot; 152 wdr->ctl_iot = pa->pa_iot; 153 if (bus_space_map(wdr->cmd_iot, iobase, 154 WDC_PIOC_REG_NPORTS, 0, &wdr->cmd_baseioh)) 155 panic("%s: couldn't map drive registers", device_xname(self)); 156 for (i = 0; i < WDC_PIOC_REG_NPORTS; i++) { 157 if (bus_space_subregion(wdr->cmd_iot, 158 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 159 &wdr->cmd_iohs[i]) != 0) 160 panic("%s: couldn't submap drive registers", 161 device_xname(self)); 162 } 163 164 if (bus_space_map(wdr->ctl_iot, 165 iobase + WDC_PIOC_AUXREG_OFFSET, WDC_PIOC_AUXREG_NPORTS, 0, 166 &wdr->ctl_ioh)) 167 panic("%s: couldn't map aux registers", device_xname(self)); 168 169 sc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc", wdcintr, 170 &sc->sc_channel); 171 if (!sc->sc_ih) 172 panic("%s: Cannot claim IRQ %d", device_xname(self), 173 pa->pa_irq); 174 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 175 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 176 sc->sc_chanlist[0] = &sc->sc_channel; 177 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 178 sc->sc_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 179 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 180 sc->sc_wdcdev.wdc_maxdrives = 2; 181 sc->sc_channel.ch_channel = 0; 182 sc->sc_channel.ch_queue = ata_queue_alloc(1); 183 184 wdc_init_shadow_regs(wdr); 185 186 wdcattach(&sc->sc_channel); 187 } 188 189 /* End of wdc_pioc.c */ 190
Indexes created Mon Oct 20 05:10:11 GMT 2025