1/* $NetBSD: obio_wdc.c,v 1.12 2022/09/27 06:36:41 skrll 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 1.12 2022/09/27 06:36:41 skrll Exp $"); 38 39#include "locators.h" 40 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/device.h> 44 45#include <sys/bus.h> 46#include <machine/intr.h> 47 48#include <arm/gemini/gemini_var.h> 49#include <arm/gemini/gemini_reg.h> 50#include <arm/gemini/gemini_obiovar.h> 51 52#include <dev/ic/wdcreg.h> 53#include <dev/ata/atavar.h> 54#include <dev/ic/wdcvar.h> 55 56struct wdc_obio_softc { 57 struct wdc_softc sc_wdcdev; 58 struct ata_channel *wdc_chanlist[1]; 59 struct ata_channel ata_channel; 60 struct wdc_regs wdc_regs; 61 void *sc_ih; 62}; 63 64static int wdc_obio_match(device_t, cfdata_t, void *); 65static void wdc_obio_attach(device_t, device_t, void *); 66 67CFATTACH_DECL_NEW(wdc_obio, sizeof(struct wdc_obio_softc), 68 wdc_obio_match, wdc_obio_attach, NULL, NULL); 69 70static int 71wdc_obio_match(device_t parent, cfdata_t match, void *aux) 72{ 73 struct obio_attach_args * const obio = aux; 74 75 if (obio->obio_addr == GEMINI_MIDE_BASEn(0) 76 || obio->obio_addr == GEMINI_MIDE_BASEn(1)) 77 return 1; 78 79 return 0; 80 81} 82 83static void 84wdc_obio_attach(device_t parent, device_t self, void *aux) 85{ 86 struct wdc_obio_softc *sc = device_private(self); 87 struct wdc_regs *wdr; 88 struct obio_attach_args *obio = aux; 89 uint chan; 90 int i; 91 92 /* 93 * we treat the two channels of the Gemini MIDE controller 94 * as separate wdc controllers, because they have 95 * independent interrupts. 'chan' here is a MIDE channel, 96 * (not to be confused with ATA channel). 97 */ 98 switch (obio->obio_addr) { 99 case GEMINI_MIDE_BASEn(0): 100 chan = 0; 101 break; 102 case GEMINI_MIDE_BASEn(1): 103 chan = 1; 104 break; 105 default: 106 panic("wdc_obio_attach: bad address"); 107 } 108 109 sc->sc_wdcdev.sc_atac.atac_dev = self; 110 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 111 wdr->cmd_iot = obio->obio_iot; 112 wdr->ctl_iot = obio->obio_iot; 113 if (bus_space_map(wdr->cmd_iot, obio->obio_addr, GEMINI_MIDE_SIZE, 114 0, &wdr->cmd_baseioh)) { 115 aprint_error(": couldn't map registers\n"); 116 return; 117 } 118 119 for (i = 0; i < 8; i++) { 120 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 121 GEMINI_MIDE_CMDBLK + i, 1, &wdr->cmd_iohs[i]) != 0) { 122 aprint_error(": couldn't subregion registers\n"); 123 return; 124 } 125 } 126 127 if (bus_space_subregion(wdr->ctl_iot, wdr->cmd_baseioh, 128 GEMINI_MIDE_CTLBLK, 1, &wdr->ctl_ioh) != 0) { 129 aprint_error(": couldn't subregion registers\n"); 130 return; 131 } 132 133 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 134 135 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 136 sc->wdc_chanlist[0] = &sc->ata_channel; 137 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist; 138 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 139 sc->sc_wdcdev.wdc_maxdrives = 2; 140 sc->ata_channel.ch_channel = 0; 141 sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 142 143 wdc_init_shadow_regs(wdr); 144 145 aprint_normal("\n"); 146 147 if (obio->obio_intr != OBIOCF_INTR_DEFAULT) 148 sc->sc_ih = intr_establish(obio->obio_intr, IPL_BIO, IST_LEVEL_HIGH, 149 wdcintr, &sc->ata_channel); 150 else { 151 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NOIRQ; 152 aprint_normal_dev(self, "Using polled I/O\n"); 153 } 154 155 wdcattach(&sc->ata_channel); 156} 157