1 /* $NetBSD: wdc_obio.c,v 1.5 2008/04/28 20:23:16 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003, 2005 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 1.5 2008/04/28 20:23:16 martin Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/malloc.h> 39 40 #include <machine/bus.h> 41 #include <machine/intr.h> 42 43 #include <arm/xscale/i80321var.h> 44 #include <evbarm/iq80321/iq80321reg.h> 45 #include <evbarm/iq80321/obiovar.h> 46 47 #include <evbarm/iq31244/iq31244reg.h> 48 49 #include <dev/ic/wdcreg.h> 50 #include <dev/ata/atavar.h> 51 #include <dev/ic/wdcvar.h> 52 53 struct wdc_obio_softc { 54 struct wdc_softc sc_wdcdev; 55 struct ata_channel *wdc_chanlist[1]; 56 struct ata_channel ata_channel; 57 struct ata_queue wdc_chqueue; 58 struct wdc_regs wdc_regs; 59 void *sc_ih; 60 }; 61 62 static int wdc_obio_probe(device_t, cfdata_t, void *); 63 static void wdc_obio_attach(device_t, device_t, void *); 64 65 CFATTACH_DECL_NEW(wdc_obio, sizeof(struct wdc_obio_softc), 66 wdc_obio_probe, wdc_obio_attach, NULL, NULL); 67 68 static int 69 wdc_obio_probe(device_t parent, cfdata_t match, void *aux) 70 { 71 return 1; 72 } 73 74 static void 75 wdc_obio_attach(device_t parent, device_t self, void *aux) 76 { 77 struct wdc_obio_softc *sc = device_private(self); 78 struct wdc_regs *wdr; 79 struct obio_attach_args *oba = aux; 80 int i; 81 82 sc->sc_wdcdev.sc_atac.atac_dev = self; 83 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 84 wdr->cmd_iot = oba->oba_st; 85 wdr->ctl_iot = oba->oba_st; 86 if (bus_space_map(wdr->cmd_iot, oba->oba_addr, IQ31244_CFLASH_SIZE, 87 0, &wdr->cmd_baseioh)) { 88 aprint_error(": couldn't map registers\n"); 89 return; 90 } 91 92 for (i = 0; i < 8; i++) { 93 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 94 IQ31244_CFLASH_CMD_BASE + i, 1, &wdr->cmd_iohs[i]) != 0) { 95 aprint_error(": couldn't subregion registers\n"); 96 return; 97 } 98 } 99 100 if (bus_space_subregion(wdr->ctl_iot, wdr->cmd_baseioh, 101 IQ31244_CFLASH_CTL_BASE, 1, &wdr->ctl_ioh) != 0) { 102 aprint_error(": couldn't subregion registers\n"); 103 return; 104 } 105 106 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 107 108 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 109 sc->wdc_chanlist[0] = &sc->ata_channel; 110 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist; 111 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 112 sc->ata_channel.ch_channel = 0; 113 sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 114 sc->ata_channel.ch_queue = &sc->wdc_chqueue; 115 sc->ata_channel.ch_ndrive = 2; 116 wdc_init_shadow_regs(&sc->ata_channel); 117 118 aprint_normal("\n"); 119 120 /* 121 * The interrupt line is controlled by a jumper. We can't detect 122 * this, except by allowing a request to time out, so assume that 123 * if the config file hasn't specified the IRQ, then the jumper isn't 124 * fitted. 125 */ 126 if (oba->oba_irq != -1) 127 sc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_BIO, 128 wdcintr, &sc->ata_channel); 129 else { 130 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NOIRQ; 131 aprint_normal_dev(self, "Using polled I/O\n"); 132 } 133 134 wdcattach(&sc->ata_channel); 135 } 136