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 /* 32 * PSIM local bus ATA controller 33 */ 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 <machine/stdarg.h> 43 #include <vm/uma.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 #include <ata_if.h> 50 51 #include <dev/ofw/openfirm.h> 52 #include <powerpc/psim/iobusvar.h> 53 54 /* 55 * Define the iobus ata bus attachment. This creates a pseudo-bus that 56 * the ATA device can be attached to 57 */ 58 static int ata_iobus_attach(device_t dev); 59 static int ata_iobus_probe(device_t dev); 60 static int ata_iobus_print_child(device_t dev, device_t child); 61 struct resource *ata_iobus_alloc_resource(device_t, device_t, int, int *, 62 rman_res_t, rman_res_t, rman_res_t, 63 u_int); 64 static int ata_iobus_release_resource(device_t, device_t, struct resource *); 65 66 static device_method_t ata_iobus_methods[] = { 67 /* Device interface */ 68 DEVMETHOD(device_probe, ata_iobus_probe), 69 DEVMETHOD(device_attach, ata_iobus_attach), 70 DEVMETHOD(device_shutdown, bus_generic_shutdown), 71 DEVMETHOD(device_suspend, bus_generic_suspend), 72 DEVMETHOD(device_resume, bus_generic_resume), 73 74 /* Bus methods */ 75 DEVMETHOD(bus_print_child, ata_iobus_print_child), 76 DEVMETHOD(bus_alloc_resource, ata_iobus_alloc_resource), 77 DEVMETHOD(bus_release_resource, ata_iobus_release_resource), 78 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 79 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 80 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 81 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 82 83 DEVMETHOD_END 84 }; 85 86 static driver_t ata_iobus_driver = { 87 "ataiobus", 88 ata_iobus_methods, 89 0, 90 }; 91 92 DRIVER_MODULE(ataiobus, iobus, ata_iobus_driver, NULL, NULL); 93 MODULE_DEPEND(ata, ata, 1, 1, 1); 94 95 static int 96 ata_iobus_probe(device_t dev) 97 { 98 char *type = iobus_get_name(dev); 99 100 if (strncmp(type, "ata", 3) != 0) 101 return (ENXIO); 102 103 device_set_desc(dev, "PSIM ATA Controller"); 104 return (0); 105 } 106 107 static int 108 ata_iobus_attach(device_t dev) 109 { 110 /* 111 * Add a single child per controller. Should be able 112 * to add two 113 */ 114 device_add_child(dev, "ata", -1); 115 return (bus_generic_attach(dev)); 116 } 117 118 static int 119 ata_iobus_print_child(device_t dev, device_t child) 120 { 121 int retval = 0; 122 123 retval += bus_print_child_header(dev, child); 124 /* irq ? */ 125 retval += bus_print_child_footer(dev, child); 126 127 return (retval); 128 } 129 130 struct resource * 131 ata_iobus_alloc_resource(device_t dev, device_t child, int type, int *rid, 132 rman_res_t start, rman_res_t end, rman_res_t count, 133 u_int flags) 134 { 135 struct resource *res = NULL; 136 int myrid; 137 u_int *ofw_regs; 138 139 ofw_regs = iobus_get_regs(dev); 140 141 /* 142 * The reg array for the PSIM ata device has 6 start/size entries: 143 * 0 - unused 144 * 1/2/3 - unused 145 * 4/5/6 - primary command 146 * 7/8/9 - secondary command 147 * 10/11/12 - primary control 148 * 13/14/15 - secondary control 149 * 16/17/18 - primary/secondary dma registers, unimplemented 150 * 151 * The resource values are calculated from these registers 152 */ 153 if (type == SYS_RES_IOPORT) { 154 switch (*rid) { 155 case ATA_IOADDR_RID: 156 myrid = 0; 157 start = ofw_regs[4]; 158 end = start + ATA_IOSIZE - 1; 159 count = ATA_IOSIZE; 160 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 161 SYS_RES_MEMORY, &myrid, 162 start, end, count, flags); 163 break; 164 165 case ATA_CTLADDR_RID: 166 myrid = 0; 167 start = ofw_regs[10]; 168 end = start + ATA_CTLIOSIZE - 1; 169 count = ATA_CTLIOSIZE; 170 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 171 SYS_RES_MEMORY, &myrid, 172 start, end, count, flags); 173 break; 174 175 case ATA_BMADDR_RID: 176 /* DMA not properly supported by psim */ 177 break; 178 } 179 return (res); 180 181 } else if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) { 182 /* 183 * Pass this on to the parent 184 */ 185 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, 186 SYS_RES_IRQ, rid, 0, ~0, 1, flags)); 187 188 } else { 189 return (NULL); 190 } 191 } 192 193 static int 194 ata_iobus_release_resource(device_t dev, device_t child, struct resource *r) 195 { 196 /* no hotplug... */ 197 return (0); 198 } 199 200 /* 201 * Define the actual ATA device. This is a sub-bus to the ata-iobus layer 202 * to allow the higher layer bus to massage the resource allocation. 203 */ 204 205 static int ata_iobus_sub_probe(device_t dev); 206 static int ata_iobus_sub_setmode(device_t dev, int target, int mode); 207 208 static device_method_t ata_iobus_sub_methods[] = { 209 /* Device interface */ 210 DEVMETHOD(device_probe, ata_iobus_sub_probe), 211 DEVMETHOD(device_attach, ata_attach), 212 DEVMETHOD(device_detach, ata_detach), 213 DEVMETHOD(device_resume, ata_resume), 214 215 /* ATA interface */ 216 DEVMETHOD(ata_setmode, ata_iobus_sub_setmode), 217 DEVMETHOD_END 218 }; 219 220 static driver_t ata_iobus_sub_driver = { 221 "ata", 222 ata_iobus_sub_methods, 223 sizeof(struct ata_channel), 224 }; 225 226 DRIVER_MODULE(ata, ataiobus, ata_iobus_sub_driver, NULL, NULL); 227 228 static int 229 ata_iobus_sub_probe(device_t dev) 230 { 231 struct ata_channel *ch = device_get_softc(dev); 232 233 /* Only a single unit per controller thus far */ 234 ch->unit = 0; 235 ch->flags = (ATA_USE_16BIT|ATA_NO_SLAVE); 236 ata_generic_hw(dev); 237 238 return ata_probe(dev); 239 } 240 241 static int 242 ata_iobus_sub_setmode(device_t parent, int target, int mode) 243 { 244 /* Only ever PIO mode here... */ 245 return (ATA_PIO); 246 } 247