wdc_obio.c revision 1.11
1 /* $NetBSD: wdc_obio.c,v 1.11 2023/12/20 15:00:08 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum and by Onno van der Linden. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: wdc_obio.c,v 1.11 2023/12/20 15:00:08 thorpej Exp $"); 34 35 #include <sys/types.h> 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/device.h> 39 40 #include <sys/bus.h> 41 #include <machine/intr.h> 42 43 #include <dev/ata/atavar.h> 44 #include <dev/ic/wdcvar.h> 45 46 #include <landisk/dev/obiovar.h> 47 48 struct wdc_obio_softc { 49 struct wdc_softc sc_wdcdev; 50 struct ata_channel *sc_chanlist[1]; 51 struct ata_channel sc_channel; 52 struct wdc_regs sc_wdc_regs; 53 void *sc_ih; 54 }; 55 56 static int wdc_obio_probe(device_t, cfdata_t, void *); 57 static void wdc_obio_attach(device_t, device_t, void *); 58 59 CFATTACH_DECL_NEW(wdc_obio, sizeof(struct wdc_obio_softc), 60 wdc_obio_probe, wdc_obio_attach, NULL, NULL); 61 62 #define WDC_OBIO_REG_NPORTS WDC_NREG 63 #define WDC_OBIO_REG_SIZE (WDC_OBIO_REG_NPORTS * 2) 64 #define WDC_OBIO_AUXREG_NPORTS 1 65 #define WDC_OBIO_AUXREG_SIZE (WDC_OBIO_AUXREG_NPORTS * 2) 66 #define WDC_OBIO_AUXREG_OFFSET 0x2c 67 68 static int 69 wdc_obio_probe(device_t parent, cfdata_t cfp, void *aux) 70 { 71 struct obio_attach_args *oa = aux; 72 struct wdc_regs wdr; 73 int result = 0; 74 int i; 75 76 if (oa->oa_nio < 1) 77 return (0); 78 if (oa->oa_nirq < 1) 79 return (0); 80 81 if (oa->oa_io[0].or_addr == IOBASEUNK) 82 return (0); 83 if (oa->oa_irq[0].or_irq == IRQUNK) 84 return (0); 85 86 wdr.cmd_iot = oa->oa_iot; 87 if (bus_space_map(wdr.cmd_iot, oa->oa_io[0].or_addr, 88 WDC_OBIO_REG_SIZE, 0, &wdr.cmd_baseioh)) { 89 goto out; 90 } 91 for (i = 0; i < WDC_OBIO_REG_NPORTS; i++) { 92 if (bus_space_subregion(wdr.cmd_iot, wdr.cmd_baseioh, 93 i * 2, (i == 0) ? 2 : 1, &wdr.cmd_iohs[i])) { 94 goto outunmap; 95 } 96 } 97 wdc_init_shadow_regs(&wdr); 98 99 wdr.ctl_iot = oa->oa_iot; 100 if (bus_space_map(wdr.ctl_iot, 101 oa->oa_io[0].or_addr + WDC_OBIO_AUXREG_OFFSET, 102 WDC_OBIO_AUXREG_SIZE, 0, &wdr.ctl_ioh)) { 103 goto outunmap; 104 } 105 106 result = wdcprobe(&wdr); 107 if (result) { 108 oa->oa_nio = 1; 109 oa->oa_io[0].or_size = WDC_OBIO_REG_SIZE; 110 oa->oa_nirq = 1; 111 oa->oa_niomem = 0; 112 } 113 114 bus_space_unmap(wdr.ctl_iot, wdr.ctl_ioh, WDC_OBIO_AUXREG_SIZE); 115 outunmap: 116 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, WDC_OBIO_REG_SIZE); 117 out: 118 return (result); 119 } 120 121 static void 122 wdc_obio_attach(device_t parent, device_t self, void *aux) 123 { 124 struct wdc_obio_softc *sc = device_private(self); 125 struct obio_attach_args *oa = aux; 126 struct wdc_regs *wdr; 127 int i; 128 129 aprint_naive("\n"); 130 aprint_normal("\n"); 131 132 sc->sc_wdcdev.sc_atac.atac_dev = self; 133 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 134 135 wdr->cmd_iot = oa->oa_iot; 136 wdr->ctl_iot = oa->oa_iot; 137 if (bus_space_map(wdr->cmd_iot, oa->oa_io[0].or_addr, 138 WDC_OBIO_REG_SIZE, 0, &wdr->cmd_baseioh) 139 || bus_space_map(wdr->ctl_iot, 140 oa->oa_io[0].or_addr + WDC_OBIO_AUXREG_OFFSET, 141 WDC_OBIO_AUXREG_SIZE, 0, &wdr->ctl_ioh)) { 142 aprint_error_dev(self, "couldn't map registers\n"); 143 return; 144 } 145 146 for (i = 0; i < WDC_OBIO_REG_NPORTS; i++) { 147 if (bus_space_subregion(wdr->cmd_iot, 148 wdr->cmd_baseioh, i * 2, (i == 0) ? 2 : 1, 149 &wdr->cmd_iohs[i]) != 0) { 150 aprint_error_dev(self, 151 "couldn't subregion registers\n"); 152 return; 153 } 154 } 155 156 sc->sc_ih = obio_intr_establish(oa->oa_irq[0].or_irq, IPL_BIO, wdcintr, 157 &sc->sc_channel); 158 159 sc->sc_wdcdev.cap |= WDC_CAPABILITY_PREATA; 160 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 161 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 162 sc->sc_chanlist[0] = &sc->sc_channel; 163 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 164 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 165 sc->sc_wdcdev.wdc_maxdrives = 2; 166 sc->sc_channel.ch_channel = 0; 167 sc->sc_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 168 169 wdc_init_shadow_regs(wdr); 170 171 wdcattach(&sc->sc_channel); 172 } 173
Indexes created Thu Oct 02 07:10:07 GMT 2025