obio_wdc.c revision 1.2
1 /* $NetBSD: obio_wdc.c,v 1.2 2008/11/17 23:51:30 cliff Exp $ */ 2 3 /* adapted from iq31244/wdc_obio.c: 4 * NetBSD: wdc_obio.c,v 1.5 2008/04/28 20:23:16 martin Exp 5 */ 6 7 /*- 8 * Copyright (c) 1998, 2003, 2005 The NetBSD Foundation, Inc. 9 * All rights reserved. 10 * 11 * This code is derived from software contributed to The NetBSD Foundation 12 * by Charles M. Hannum and by Onno van der Linden. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: obio_wdc.c,v 1.2 2008/11/17 23:51:30 cliff Exp $"); 38 39 #include "locators.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/device.h> 44 #include <sys/malloc.h> 45 46 #include <machine/bus.h> 47 #include <machine/intr.h> 48 49 #include <arm/gemini/gemini_var.h> 50 #include <arm/gemini/gemini_reg.h> 51 #include <arm/gemini/gemini_obiovar.h> 52 53 #include <dev/ic/wdcreg.h> 54 #include <dev/ata/atavar.h> 55 #include <dev/ic/wdcvar.h> 56 57 struct wdc_obio_softc { 58 struct wdc_softc sc_wdcdev; 59 struct ata_channel *wdc_chanlist[1]; 60 struct ata_channel ata_channel; 61 struct ata_queue wdc_chqueue; 62 struct wdc_regs wdc_regs; 63 void *sc_ih; 64 }; 65 66 static int wdc_obio_match(device_t, cfdata_t, void *); 67 static void wdc_obio_attach(device_t, device_t, void *); 68 69 CFATTACH_DECL_NEW(wdc_obio, sizeof(struct wdc_obio_softc), 70 wdc_obio_match, wdc_obio_attach, NULL, NULL); 71 72 static int 73 wdc_obio_match(device_t parent, cfdata_t match, void *aux) 74 { 75 struct obio_attach_args * const obio = aux; 76 77 if (obio->obio_addr == GEMINI_MIDE_BASEn(0) 78 || obio->obio_addr == GEMINI_MIDE_BASEn(1)) 79 return 1; 80 81 return 0; 82 83 } 84 85 static void 86 wdc_obio_attach(device_t parent, device_t self, void *aux) 87 { 88 struct wdc_obio_softc *sc = device_private(self); 89 struct wdc_regs *wdr; 90 struct obio_attach_args *obio = aux; 91 uint chan; 92 int i; 93 94 /* 95 * we treat the two channels of the Gemini MIDE controller 96 * as seperate wdc controllers, because they have 97 * independent interrupts. 'chan' here is an MIDE chanel, 98 * (not to be confused with ATA channel). 99 */ 100 switch (obio->obio_addr) { 101 case GEMINI_MIDE_BASEn(0): 102 chan = 0; 103 break; 104 case GEMINI_MIDE_BASEn(1): 105 chan = 1; 106 break; 107 default: 108 panic("wdc_obio_attach: bad address"); 109 } 110 111 sc->sc_wdcdev.sc_atac.atac_dev = self; 112 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 113 wdr->cmd_iot = obio->obio_iot; 114 wdr->ctl_iot = obio->obio_iot; 115 if (bus_space_map(wdr->cmd_iot, obio->obio_addr, GEMINI_MIDE_SIZE, 116 0, &wdr->cmd_baseioh)) { 117 aprint_error(": couldn't map registers\n"); 118 return; 119 } 120 121 for (i = 0; i < 8; i++) { 122 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 123 GEMINI_MIDE_CMDBLK + i, 1, &wdr->cmd_iohs[i]) != 0) { 124 aprint_error(": couldn't subregion registers\n"); 125 return; 126 } 127 } 128 129 if (bus_space_subregion(wdr->ctl_iot, wdr->cmd_baseioh, 130 GEMINI_MIDE_CTLBLK, 1, &wdr->ctl_ioh) != 0) { 131 aprint_error(": couldn't subregion registers\n"); 132 return; 133 } 134 135 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 136 137 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 138 sc->wdc_chanlist[0] = &sc->ata_channel; 139 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist; 140 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 141 sc->ata_channel.ch_channel = 0; 142 sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 143 sc->ata_channel.ch_queue = &sc->wdc_chqueue; 144 sc->ata_channel.ch_ndrive = 2; 145 wdc_init_shadow_regs(&sc->ata_channel); 146 147 aprint_normal("\n"); 148 149 if (obio->obio_intr != OBIOCF_INTR_DEFAULT) 150 sc->sc_ih = intr_establish(obio->obio_intr, IPL_BIO, IST_LEVEL_HIGH, 151 wdcintr, &sc->ata_channel); 152 else { 153 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NOIRQ; 154 aprint_normal_dev(self, "Using polled I/O\n"); 155 } 156 157 wdcattach(&sc->ata_channel); 158 } 159
Indexes created Wed Oct 01 15:09:59 GMT 2025