1 /*- 2 * Copyright 2004 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 */ 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 /* 32 * Mac 'Kauai' PCI ATA controller 33 */ 34 #include "opt_ata.h" 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 #include <sys/bus.h> 40 #include <sys/malloc.h> 41 #include <sys/sema.h> 42 #include <sys/taskqueue.h> 43 #include <vm/uma.h> 44 #include <machine/stdarg.h> 45 #include <machine/resource.h> 46 #include <machine/bus.h> 47 #include <sys/rman.h> 48 #include <sys/ata.h> 49 #include <dev/ata/ata-all.h> 50 51 #include <dev/ofw/openfirm.h> 52 53 #include <dev/pci/pcivar.h> 54 #include <dev/pci/pcireg.h> 55 56 #define ATA_KAUAI_REGOFFSET 0x2000 57 58 /* 59 * Offset to alt-control register from base 60 */ 61 #define ATA_KAUAI_ALTOFFSET (ATA_KAUAI_REGOFFSET + 0x160) 62 63 /* 64 * Define the gap between registers 65 */ 66 #define ATA_KAUAI_REGGAP 16 67 68 /* 69 * Define the kauai pci bus attachment. 70 */ 71 static int ata_kauai_probe(device_t dev); 72 73 static device_method_t ata_kauai_methods[] = { 74 /* Device interface */ 75 DEVMETHOD(device_probe, ata_kauai_probe), 76 DEVMETHOD(device_attach, ata_attach), 77 DEVMETHOD(device_detach, bus_generic_detach), 78 DEVMETHOD(device_shutdown, bus_generic_shutdown), 79 DEVMETHOD(device_suspend, bus_generic_suspend), 80 DEVMETHOD(device_resume, bus_generic_resume), 81 82 { 0, 0 } 83 }; 84 85 static driver_t ata_kauai_driver = { 86 "ata", 87 ata_kauai_methods, 88 sizeof(struct ata_channel), 89 }; 90 91 DRIVER_MODULE(ata, pci, ata_kauai_driver, ata_devclass, 0, 0); 92 93 static int 94 ata_kauai_locknoop(struct ata_channel *ch, int type) 95 { 96 /* XXX SMP ? */ 97 return (0); 98 } 99 100 static void 101 ata_kauai_setmode(struct ata_device *atadev, int mode) 102 { 103 atadev->mode = ATA_PIO; 104 } 105 106 107 /* 108 * PCI ID search table 109 */ 110 static struct kauai_pci_dev { 111 u_int32_t kpd_devid; 112 char *kpd_desc; 113 } kauai_pci_devlist[] = { 114 { 0x0033106b, "Uninorth2 Kauai ATA Controller" }, 115 { 0x003b106b, "Intrepid Kauai ATA Controller" }, 116 { 0x0043106b, "K2 Kauai ATA Controller" }, 117 { 0, NULL } 118 }; 119 120 static int 121 ata_kauai_probe(device_t dev) 122 { 123 struct ata_channel *ch; 124 struct resource *mem; 125 u_long startp, countp; 126 u_int32_t devid; 127 int i, found, rid, status; 128 129 found = 0; 130 devid = pci_get_devid(dev); 131 for (i = 0; kauai_pci_devlist[i].kpd_desc != NULL; i++) { 132 if (devid == kauai_pci_devlist[i].kpd_devid) { 133 found = 1; 134 device_set_desc(dev, kauai_pci_devlist[i].kpd_desc); 135 } 136 } 137 138 if (!found) 139 return (ENXIO); 140 141 /* 142 * This device seems to ignore writes to the interrupt 143 * config register, resulting in interrupt resources 144 * not being attached. If this is the case, use 145 * Open Firmware to determine the irq, and then attach 146 * the resource. This allows the ATA common code to 147 * allocate the irq. 148 */ 149 status = bus_get_resource(dev, SYS_RES_IRQ, 0, &startp, &countp); 150 if (status == ENOENT) { 151 int irq; 152 153 /* 154 * Aargh, hideous hack until ofw pci intr routine is 155 * exported 156 */ 157 irq = 39; /* XXX */ 158 bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1); 159 160 /* 161 * Sanity check... 162 */ 163 status = bus_get_resource(dev, SYS_RES_IRQ, 0, &startp, 164 &countp); 165 if (status == ENOENT || 166 startp != 39) { 167 printf("kauai irq not set!\n"); 168 return (ENXIO); 169 } 170 } 171 172 ch = device_get_softc(dev); 173 bzero(ch, sizeof(struct ata_channel)); 174 175 rid = PCIR_BARS; 176 mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 177 if (mem == NULL) { 178 device_printf(dev, "could not allocate memory\n"); 179 return (ENXIO); 180 } 181 182 /* 183 * Set up the resource vectors 184 */ 185 for (i = ATA_DATA; i <= ATA_STATUS; i++) { 186 ch->r_io[i].res = mem; 187 ch->r_io[i].offset = i*ATA_KAUAI_REGGAP + ATA_KAUAI_REGOFFSET; 188 } 189 ch->r_io[ATA_ALTSTAT].res = mem; 190 ch->r_io[ATA_ALTSTAT].offset = ATA_KAUAI_ALTOFFSET; 191 192 ch->unit = 0; 193 ch->flags |= ATA_USE_16BIT|ATA_NO_SLAVE; 194 ch->locking = ata_kauai_locknoop; 195 ch->device[MASTER].setmode = ata_kauai_setmode; 196 ch->device[SLAVE].setmode = ata_kauai_setmode; 197 ata_generic_hw(ch); 198 199 return (ata_probe(dev)); 200 } 201 202