wdc_ofisa.c revision 1.34
1/* $NetBSD: wdc_ofisa.c,v 1.34 2017/10/07 19:52:11 jdolecek Exp $ */ 2 3/* 4 * Copyright 1997, 1998 5 * Digital Equipment Corporation. All rights reserved. 6 * 7 * This software is furnished under license and may be used and 8 * copied only in accordance with the following terms and conditions. 9 * Subject to these conditions, you may download, copy, install, 10 * use, modify and distribute this software in source and/or binary 11 * form. No title or ownership is transferred hereby. 12 * 13 * 1) Any source code used, modified or distributed must reproduce 14 * and retain this copyright notice and list of conditions as 15 * they appear in the source file. 16 * 17 * 2) No right is granted to use any trade name, trademark, or logo of 18 * Digital Equipment Corporation. Neither the "Digital Equipment 19 * Corporation" name nor any trademark or logo of Digital Equipment 20 * Corporation may be used to endorse or promote products derived 21 * from this software without the prior written permission of 22 * Digital Equipment Corporation. 23 * 24 * 3) This software is provided "AS-IS" and any express or implied 25 * warranties, including but not limited to, any implied warranties 26 * of merchantability, fitness for a particular purpose, or 27 * non-infringement are disclaimed. In no event shall DIGITAL be 28 * liable for any damages whatsoever, and in particular, DIGITAL 29 * shall not be liable for special, indirect, consequential, or 30 * incidental damages or damages for lost profits, loss of 31 * revenue or loss of use, whether such damages arise in contract, 32 * negligence, tort, under statute, in equity, at law or otherwise, 33 * even if advised of the possibility of such damage. 34 */ 35 36/* 37 * OFW Attachment for 'wdc' disk controller driver 38 */ 39 40#include <sys/cdefs.h> 41__KERNEL_RCSID(0, "$NetBSD: wdc_ofisa.c,v 1.34 2017/10/07 19:52:11 jdolecek Exp $"); 42 43#include <sys/param.h> 44#include <sys/device.h> 45#include <sys/systm.h> 46#include <sys/tty.h> 47#include <sys/malloc.h> 48 49#include <sys/intr.h> 50#include <sys/bus.h> 51 52#include <dev/ofw/openfirm.h> 53#include <dev/isa/isavar.h> 54#include <dev/ofisa/ofisavar.h> 55 56#include <dev/ic/wdcreg.h> /* ??? */ 57#include <dev/ata/atavar.h> 58#include <dev/ic/wdcvar.h> 59 60struct wdc_ofisa_softc { 61 struct wdc_softc sc_wdcdev; 62 struct ata_channel *sc_chanlist[1]; 63 struct ata_channel sc_channel; 64 struct wdc_regs wdc_regs; 65 void *sc_ih; 66}; 67 68static int wdc_ofisa_probe(device_t, cfdata_t, void *); 69static void wdc_ofisa_attach(device_t, device_t, void *); 70 71CFATTACH_DECL_NEW(wdc_ofisa, sizeof(struct wdc_ofisa_softc), 72 wdc_ofisa_probe, wdc_ofisa_attach, NULL, NULL); 73 74static int 75wdc_ofisa_probe(device_t parent, cfdata_t cf, void *aux) 76{ 77 struct ofisa_attach_args *aa = aux; 78 static const char *const compatible_strings[] = { "pnpPNP,600", NULL }; 79 int rv = 0; 80 81 if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1) 82 rv = 5; 83#ifdef _WDC_OFISA_MD_MATCH 84 if (!rv) 85 rv = wdc_ofisa_md_match(parent, cf, aux); 86#endif 87 return (rv); 88} 89 90static void 91wdc_ofisa_attach(device_t parent, device_t self, void *aux) 92{ 93 struct wdc_ofisa_softc *sc = device_private(self); 94 struct wdc_regs *wdr; 95 struct ofisa_attach_args *aa = aux; 96 struct ofisa_reg_desc reg[2]; 97 struct ofisa_intr_desc intr; 98 int n; 99 bus_space_handle_t ioh; 100 101 /* 102 * We're living on an ofw. We have to ask the OFW what our 103 * registers and interrupts properties look like. 104 * 105 * We expect exactly two register regions and one interrupt. 106 */ 107 108 sc->sc_wdcdev.sc_atac.atac_dev = self; 109 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 110 111 n = ofisa_reg_get(aa->oba.oba_phandle, reg, 2); 112#ifdef _WDC_OFISA_MD_REG_FIXUP 113 n = wdc_ofisa_md_reg_fixup(parent, self, aux, reg, 2, n); 114#endif 115 if (n != 2) { 116 aprint_error(": error getting register data\n"); 117 return; 118 } 119 if (reg[0].len != 8 || reg[1].len != 2) { 120 aprint_error(": weird register size (%lu/%lu, expected 8/2)\n", 121 (unsigned long)reg[0].len, (unsigned long)reg[1].len); 122 return; 123 } 124 125 n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1); 126#ifdef _WDC_OFISA_MD_INTR_FIXUP 127 n = wdc_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n); 128#endif 129 if (n != 1) { 130 aprint_error(": error getting interrupt data\n"); 131 return; 132 } 133 134 wdr->cmd_iot = (reg[0].type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt; 135 wdr->ctl_iot = (reg[1].type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt; 136 if (bus_space_map(wdr->cmd_iot, reg[0].addr, 8, 0, &ioh) || 137 bus_space_map(wdr->ctl_iot, reg[1].addr, 1, 0, 138 &wdr->ctl_ioh)) { 139 aprint_error(": can't map register spaces\n"); 140 return; 141 } 142 wdr->cmd_baseioh = ioh; 143 144 for (n = 0; n < WDC_NREG; n++) { 145 if (bus_space_subregion(wdr->cmd_iot, ioh, n, 146 n == 0 ? 4 : 1, &wdr->cmd_iohs[n]) != 0) { 147 aprint_error(": can't subregion register space\n"); 148 return; 149 } 150 } 151 152 sc->sc_ih = isa_intr_establish(aa->ic, intr.irq, intr.share, 153 IPL_BIO, wdcintr, &sc->sc_channel); 154 155 aprint_normal("\n"); 156 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 157 sc->sc_chanlist[0] = &sc->sc_channel; 158 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 159 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 160 sc->sc_wdcdev.wdc_maxdrives = 2; 161 sc->sc_channel.ch_channel = 0; 162 sc->sc_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 163 sc->sc_channel.ch_queue = ata_queue_alloc(1); 164 wdc_init_shadow_regs(&sc->sc_channel); 165 166 wdcattach(&sc->sc_channel); 167 168#if 0 169 aprint_verbose_dev(self, "registers: "); 170 ofisa_reg_print(reg, 2); 171 aprint_verbose("\n"); 172 aprint_verbose_dev(self, "interrupts: "); 173 ofisa_intr_print(&intr, 1); 174 aprint_verbose("\n"); 175#endif 176} 177