1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright 2002 by Peter Grehan. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 /* 34 * PSIM local bus ATA controller 35 */ 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/module.h> 40 #include <sys/bus.h> 41 #include <sys/malloc.h> 42 #include <sys/sema.h> 43 #include <sys/taskqueue.h> 44 #include <machine/stdarg.h> 45 #include <vm/uma.h> 46 #include <machine/resource.h> 47 #include <machine/bus.h> 48 #include <sys/rman.h> 49 #include <sys/ata.h> 50 #include <dev/ata/ata-all.h> 51 #include <ata_if.h> 52 53 #include <dev/ofw/openfirm.h> 54 #include <powerpc/psim/iobusvar.h> 55 56 /* 57 * Define the iobus ata bus attachment. This creates a pseudo-bus that 58 * the ATA device can be attached to 59 */ 60 static int ata_iobus_attach(device_t dev); 61 static int ata_iobus_probe(device_t dev); 62 static int ata_iobus_print_child(device_t dev, device_t child); 63 struct resource *ata_iobus_alloc_resource(device_t, device_t, int, int *, 64 rman_res_t, rman_res_t, rman_res_t, 65 u_int); 66 static int ata_iobus_release_resource(device_t, device_t, int, int, 67 struct resource *); 68 69 static device_method_t ata_iobus_methods[] = { 70 /* Device interface */ 71 DEVMETHOD(device_probe, ata_iobus_probe), 72 DEVMETHOD(device_attach, ata_iobus_attach), 73 DEVMETHOD(device_shutdown, bus_generic_shutdown), 74 DEVMETHOD(device_suspend, bus_generic_suspend), 75 DEVMETHOD(device_resume, bus_generic_resume), 76 77 /* Bus methods */ 78 DEVMETHOD(bus_print_child, ata_iobus_print_child), 79 DEVMETHOD(bus_alloc_resource, ata_iobus_alloc_resource), 80 DEVMETHOD(bus_release_resource, ata_iobus_release_resource), 81 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 82 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 83 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 84 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 85 86 DEVMETHOD_END 87 }; 88 89 static driver_t ata_iobus_driver = { 90 "ataiobus", 91 ata_iobus_methods, 92 0, 93 }; 94 95 static devclass_t ata_iobus_devclass; 96 97 DRIVER_MODULE(ataiobus, iobus, ata_iobus_driver, ata_iobus_devclass, NULL, 98 NULL); 99 MODULE_DEPEND(ata, ata, 1, 1, 1); 100 101 static int 102 ata_iobus_probe(device_t dev) 103 { 104 char *type = iobus_get_name(dev); 105 106 if (strncmp(type, "ata", 3) != 0) 107 return (ENXIO); 108 109 device_set_desc(dev, "PSIM ATA Controller"); 110 return (0); 111 } 112 113 114 static int 115 ata_iobus_attach(device_t dev) 116 { 117 /* 118 * Add a single child per controller. Should be able 119 * to add two 120 */ 121 device_add_child(dev, "ata", -1); 122 return (bus_generic_attach(dev)); 123 } 124 125 126 static int 127 ata_iobus_print_child(device_t dev, device_t child) 128 { 129 int retval = 0; 130 131 retval += bus_print_child_header(dev, child); 132 /* irq ? */ 133 retval += bus_print_child_footer(dev, child); 134 135 return (retval); 136 } 137 138 139 struct resource * 140 ata_iobus_alloc_resource(device_t dev, device_t child, int type, int *rid, 141 rman_res_t start, rman_res_t end, rman_res_t count, 142 u_int flags) 143 { 144 struct resource *res = NULL; 145 int myrid; 146 u_int *ofw_regs; 147 148 ofw_regs = iobus_get_regs(dev); 149 150 /* 151 * The reg array for the PSIM ata device has 6 start/size entries: 152 * 0 - unused 153 * 1/2/3 - unused 154 * 4/5/6 - primary command 155 * 7/8/9 - secondary command 156 * 10/11/12 - primary control 157 * 13/14/15 - secondary control 158 * 16/17/18 - primary/secondary dma registers, unimplemented 159 * 160 * The resource values are calculated from these registers 161 */ 162 if (type == SYS_RES_IOPORT) { 163 switch (*rid) { 164 case ATA_IOADDR_RID: 165 myrid = 0; 166 start = ofw_regs[4]; 167 end = start + ATA_IOSIZE - 1; 168 count = ATA_IOSIZE; 169 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 170 SYS_RES_MEMORY, &myrid, 171 start, end, count, flags); 172 break; 173 174 case ATA_CTLADDR_RID: 175 myrid = 0; 176 start = ofw_regs[10]; 177 end = start + ATA_CTLIOSIZE - 1; 178 count = ATA_CTLIOSIZE; 179 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 180 SYS_RES_MEMORY, &myrid, 181 start, end, count, flags); 182 break; 183 184 case ATA_BMADDR_RID: 185 /* DMA not properly supported by psim */ 186 break; 187 } 188 return (res); 189 190 } else if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) { 191 /* 192 * Pass this on to the parent 193 */ 194 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, 195 SYS_RES_IRQ, rid, 0, ~0, 1, flags)); 196 197 } else { 198 return (NULL); 199 } 200 } 201 202 203 static int 204 ata_iobus_release_resource(device_t dev, device_t child, int type, int rid, 205 struct resource *r) 206 { 207 /* no hotplug... */ 208 return (0); 209 } 210 211 212 /* 213 * Define the actual ATA device. This is a sub-bus to the ata-iobus layer 214 * to allow the higher layer bus to massage the resource allocation. 215 */ 216 217 static int ata_iobus_sub_probe(device_t dev); 218 static int ata_iobus_sub_setmode(device_t dev, int target, int mode); 219 220 static device_method_t ata_iobus_sub_methods[] = { 221 /* Device interface */ 222 DEVMETHOD(device_probe, ata_iobus_sub_probe), 223 DEVMETHOD(device_attach, ata_attach), 224 DEVMETHOD(device_detach, ata_detach), 225 DEVMETHOD(device_resume, ata_resume), 226 227 /* ATA interface */ 228 DEVMETHOD(ata_setmode, ata_iobus_sub_setmode), 229 DEVMETHOD_END 230 }; 231 232 static driver_t ata_iobus_sub_driver = { 233 "ata", 234 ata_iobus_sub_methods, 235 sizeof(struct ata_channel), 236 }; 237 238 DRIVER_MODULE(ata, ataiobus, ata_iobus_sub_driver, ata_devclass, NULL, NULL); 239 240 static int 241 ata_iobus_sub_probe(device_t dev) 242 { 243 struct ata_channel *ch = device_get_softc(dev); 244 245 /* Only a single unit per controller thus far */ 246 ch->unit = 0; 247 ch->flags = (ATA_USE_16BIT|ATA_NO_SLAVE); 248 ata_generic_hw(dev); 249 250 return ata_probe(dev); 251 } 252 253 static int 254 ata_iobus_sub_setmode(device_t parent, int target, int mode) 255 { 256 /* Only ever PIO mode here... */ 257 return (ATA_PIO); 258 } 259