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 static int 114 ata_iobus_attach(device_t dev) 115 { 116 /* 117 * Add a single child per controller. Should be able 118 * to add two 119 */ 120 device_add_child(dev, "ata", -1); 121 return (bus_generic_attach(dev)); 122 } 123 124 static int 125 ata_iobus_print_child(device_t dev, device_t child) 126 { 127 int retval = 0; 128 129 retval += bus_print_child_header(dev, child); 130 /* irq ? */ 131 retval += bus_print_child_footer(dev, child); 132 133 return (retval); 134 } 135 136 struct resource * 137 ata_iobus_alloc_resource(device_t dev, device_t child, int type, int *rid, 138 rman_res_t start, rman_res_t end, rman_res_t count, 139 u_int flags) 140 { 141 struct resource *res = NULL; 142 int myrid; 143 u_int *ofw_regs; 144 145 ofw_regs = iobus_get_regs(dev); 146 147 /* 148 * The reg array for the PSIM ata device has 6 start/size entries: 149 * 0 - unused 150 * 1/2/3 - unused 151 * 4/5/6 - primary command 152 * 7/8/9 - secondary command 153 * 10/11/12 - primary control 154 * 13/14/15 - secondary control 155 * 16/17/18 - primary/secondary dma registers, unimplemented 156 * 157 * The resource values are calculated from these registers 158 */ 159 if (type == SYS_RES_IOPORT) { 160 switch (*rid) { 161 case ATA_IOADDR_RID: 162 myrid = 0; 163 start = ofw_regs[4]; 164 end = start + ATA_IOSIZE - 1; 165 count = ATA_IOSIZE; 166 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 167 SYS_RES_MEMORY, &myrid, 168 start, end, count, flags); 169 break; 170 171 case ATA_CTLADDR_RID: 172 myrid = 0; 173 start = ofw_regs[10]; 174 end = start + ATA_CTLIOSIZE - 1; 175 count = ATA_CTLIOSIZE; 176 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 177 SYS_RES_MEMORY, &myrid, 178 start, end, count, flags); 179 break; 180 181 case ATA_BMADDR_RID: 182 /* DMA not properly supported by psim */ 183 break; 184 } 185 return (res); 186 187 } else if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) { 188 /* 189 * Pass this on to the parent 190 */ 191 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, 192 SYS_RES_IRQ, rid, 0, ~0, 1, flags)); 193 194 } else { 195 return (NULL); 196 } 197 } 198 199 static int 200 ata_iobus_release_resource(device_t dev, device_t child, int type, int rid, 201 struct resource *r) 202 { 203 /* no hotplug... */ 204 return (0); 205 } 206 207 /* 208 * Define the actual ATA device. This is a sub-bus to the ata-iobus layer 209 * to allow the higher layer bus to massage the resource allocation. 210 */ 211 212 static int ata_iobus_sub_probe(device_t dev); 213 static int ata_iobus_sub_setmode(device_t dev, int target, int mode); 214 215 static device_method_t ata_iobus_sub_methods[] = { 216 /* Device interface */ 217 DEVMETHOD(device_probe, ata_iobus_sub_probe), 218 DEVMETHOD(device_attach, ata_attach), 219 DEVMETHOD(device_detach, ata_detach), 220 DEVMETHOD(device_resume, ata_resume), 221 222 /* ATA interface */ 223 DEVMETHOD(ata_setmode, ata_iobus_sub_setmode), 224 DEVMETHOD_END 225 }; 226 227 static driver_t ata_iobus_sub_driver = { 228 "ata", 229 ata_iobus_sub_methods, 230 sizeof(struct ata_channel), 231 }; 232 233 DRIVER_MODULE(ata, ataiobus, ata_iobus_sub_driver, ata_devclass, NULL, NULL); 234 235 static int 236 ata_iobus_sub_probe(device_t dev) 237 { 238 struct ata_channel *ch = device_get_softc(dev); 239 240 /* Only a single unit per controller thus far */ 241 ch->unit = 0; 242 ch->flags = (ATA_USE_16BIT|ATA_NO_SLAVE); 243 ata_generic_hw(dev); 244 245 return ata_probe(dev); 246 } 247 248 static int 249 ata_iobus_sub_setmode(device_t parent, int target, int mode) 250 { 251 /* Only ever PIO mode here... */ 252 return (ATA_PIO); 253 } 254