1 /* 2 * Copyright 2002 by Peter Grehan. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 /* 31 * Mac-io ATA controller 32 */ 33 #include "opt_ata.h" 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/bus.h> 39 #include <sys/malloc.h> 40 #include <sys/sema.h> 41 #include <sys/taskqueue.h> 42 #include <vm/uma.h> 43 #include <machine/stdarg.h> 44 #include <machine/resource.h> 45 #include <machine/bus.h> 46 #include <sys/rman.h> 47 #include <sys/ata.h> 48 #include <dev/ata/ata-all.h> 49 50 #include <dev/ofw/openfirm.h> 51 #include <powerpc/powermac/maciovar.h> 52 53 /* 54 * Offset to control registers from base 55 */ 56 #define ATA_MACIO_ALTOFFSET 0x160 57 58 /* 59 * Define the gap between registers 60 */ 61 #define ATA_MACIO_REGGAP 16 62 63 /* 64 * Define the macio ata bus attachment. 65 */ 66 static int ata_macio_probe(device_t dev); 67 68 static device_method_t ata_macio_methods[] = { 69 /* Device interface */ 70 DEVMETHOD(device_probe, ata_macio_probe), 71 DEVMETHOD(device_attach, ata_attach), 72 73 { 0, 0 } 74 }; 75 76 static driver_t ata_macio_driver = { 77 "ata", 78 ata_macio_methods, 79 sizeof(struct ata_channel), 80 }; 81 82 DRIVER_MODULE(ata, macio, ata_macio_driver, ata_devclass, 0, 0); 83 84 static void 85 ata_macio_locknoop(struct ata_channel *ch, int type) 86 { 87 /* XXX SMP ? */ 88 } 89 90 static void 91 ata_macio_setmode(struct ata_device *atadev, int mode) 92 { 93 #if 0 94 atadev->mode = ata_limit_mode(atadev, mode, ATA_PIO_MAX); 95 #endif 96 atadev->mode = ATA_PIO; 97 } 98 99 static int 100 ata_macio_probe(device_t dev) 101 { 102 char *type = macio_get_devtype(dev); 103 struct ata_channel *ch; 104 struct resource *mem; 105 int rid, i; 106 107 if (strcmp(type, "ata") != 0 && 108 strcmp(type, "ide") != 0) 109 return (ENXIO); 110 111 ch = device_get_softc(dev); 112 bzero(ch, sizeof(struct ata_channel)); 113 114 rid = 0; 115 mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 116 if (mem == NULL) { 117 device_printf(dev, "could not allocate memory\n"); 118 return (ENXIO); 119 } 120 121 /* 122 * Set up the resource vectors 123 */ 124 for (i = ATA_DATA; i <= ATA_STATUS; i++) { 125 ch->r_io[i].res = mem; 126 ch->r_io[i].offset = i * ATA_MACIO_REGGAP; 127 } 128 ch->r_io[ATA_ALTSTAT].res = mem; 129 ch->r_io[ATA_ALTSTAT].offset = ATA_MACIO_ALTOFFSET; 130 131 ch->unit = 0; 132 ch->flags |= ATA_USE_16BIT; 133 ch->locking = ata_macio_locknoop; 134 ch->device[MASTER].setmode = ata_macio_setmode; 135 ch->device[SLAVE].setmode = ata_macio_setmode; 136 ata_generic_hw(ch); 137 138 return (ata_probe(dev)); 139 } 140 141