ata-cbus.c revision 109011
1/*- 2 * Copyright (c) 2002 S�ren Schmidt <sos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification, immediately at the beginning of the file. 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, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: head/sys/dev/ata/ata-cbus.c 109011 2003-01-09 14:00:07Z sos $ 29 */ 30 31#include "opt_ata.h" 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/kernel.h> 35#include <sys/bus.h> 36#include <sys/malloc.h> 37#include <machine/resource.h> 38#include <machine/bus.h> 39#include <sys/rman.h> 40#include <isa/isavar.h> 41#include <dev/ata/ata-all.h> 42 43/* local vars */ 44static bus_addr_t ata_pc98_ports[] = { 45 0x0, 0x2, 0x4, 0x6, 0x8, 0xa, 0xc, 0xe 46}; 47 48struct ata_cbus_controller { 49 struct resource *io; 50 struct resource *altio; 51 struct resource *bankio; 52 struct resource *irq; 53 int current_bank; 54}; 55 56static int 57ata_cbus_probe(device_t dev) 58{ 59 struct resource *io; 60 int rid; 61 u_long tmp; 62 63 /* dont probe PnP devices */ 64 if (isa_get_vendorid(dev)) 65 return (ENXIO); 66 67 /* allocate the ioport range */ 68 rid = ATA_IOADDR_RID; 69 io = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid, ata_pc98_ports, 70 ATA_IOSIZE, RF_ACTIVE); 71 if (!io) 72 return ENOMEM; 73 isa_load_resourcev(io, ata_pc98_ports, ATA_IOSIZE); 74 75 /* calculate & set the altport range */ 76 rid = ATA_PC98_ALTADDR_RID; 77 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) { 78 bus_set_resource(dev, SYS_RES_IOPORT, rid, 79 rman_get_start(io)+ATA_PC98_ALTOFFSET, ATA_ALTIOSIZE); 80 } 81 82 /* calculate & set the bank range */ 83 rid = ATA_PC98_BANKADDR_RID; 84 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) { 85 bus_set_resource(dev, SYS_RES_IOPORT, rid, 86 ATA_PC98_BANK, ATA_PC98_BANKIOSIZE); 87 } 88 89 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io); 90 return 0; 91} 92 93static int 94ata_cbus_attach(device_t dev) 95{ 96 struct ata_cbus_controller *scp = device_get_softc(dev); 97 int rid; 98 99 /* allocate resources */ 100 rid = ATA_IOADDR_RID; 101 scp->io = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid, ata_pc98_ports, 102 ATA_IOSIZE, RF_ACTIVE); 103 if (!scp->io) 104 return ENOMEM; 105 106 isa_load_resourcev(scp->io, ata_pc98_ports, ATA_IOSIZE); 107 108 rid = ATA_PC98_ALTADDR_RID; 109 scp->altio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 110 rman_get_start(scp->io)+ATA_PC98_ALTOFFSET, 111 ~0, ATA_ALTIOSIZE, RF_ACTIVE); 112 if (!scp->altio) 113 return ENOMEM; 114 115 rid = ATA_PC98_BANKADDR_RID; 116 scp->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 117 ATA_PC98_BANK, ~0, 118 ATA_PC98_BANKIOSIZE, RF_ACTIVE); 119 if (!scp->bankio) 120 return ENOMEM; 121 122 rid = 0; 123 scp->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 124 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 125 126 scp->current_bank = -1; 127 if (!device_add_child(dev, "ata", 0)) 128 return ENOMEM; 129 if (!device_add_child(dev, "ata", 1)) 130 return ENOMEM; 131 132 return bus_generic_attach(dev); 133} 134 135static struct resource * 136ata_cbus_alloc_resource(device_t dev, device_t child, int type, int *rid, 137 u_long start, u_long end, u_long count, u_int flags) 138{ 139 struct ata_cbus_controller *scp = device_get_softc(dev); 140 141 if (type == SYS_RES_IOPORT) { 142 switch (*rid) { 143 case ATA_IOADDR_RID: 144 return scp->io; 145 case ATA_ALTADDR_RID: 146 return scp->altio; 147 } 148 } 149 if (type == SYS_RES_IRQ) { 150 return scp->irq; 151 } 152 return 0; 153} 154 155static int 156ata_cbus_setup_intr(device_t dev, device_t child, struct resource *irq, 157 int flags, driver_intr_t *intr, void *arg, 158 void **cookiep) 159{ 160 return BUS_SETUP_INTR(device_get_parent(dev), dev, irq, 161 flags, intr, arg, cookiep); 162} 163 164static int 165ata_cbus_print_child(device_t dev, device_t child) 166{ 167 struct ata_channel *ch = device_get_softc(child); 168 int retval = 0; 169 170 retval += bus_print_child_header(dev, child); 171 retval += printf(" at bank %d", ch->unit); 172 retval += bus_print_child_footer(dev, child); 173 return retval; 174} 175 176static int 177ata_cbus_intr(struct ata_channel *ch) 178{ 179 struct ata_cbus_controller *scp = 180 device_get_softc(device_get_parent(ch->dev)); 181 182 return (ch->unit == scp->current_bank); 183} 184 185static void 186ata_cbus_banking(struct ata_channel *ch, int flags) 187{ 188 struct ata_cbus_controller *scp = 189 device_get_softc(device_get_parent(ch->dev)); 190 191 switch (flags) { 192 case ATA_LF_LOCK: 193 if (scp->current_bank == ch->unit) 194 break; 195 while (!atomic_cmpset_acq_int(&scp->current_bank, -1, ch->unit)) 196 tsleep((caddr_t)ch->lock_func, PRIBIO, "atalck", 1); 197 bus_space_write_1(rman_get_bustag(scp->bankio), 198 rman_get_bushandle(scp->bankio), 0, ch->unit); 199 break; 200 201 case ATA_LF_UNLOCK: 202 if (scp->current_bank == -1 || scp->current_bank != ch->unit) 203 break; 204 atomic_store_rel_int(&scp->current_bank, -1); 205 break; 206 } 207 return; 208} 209 210static device_method_t ata_cbus_methods[] = { 211 /* device_interface */ 212 DEVMETHOD(device_probe, ata_cbus_probe), 213 DEVMETHOD(device_attach, ata_cbus_attach), 214 215 /* bus methods */ 216 DEVMETHOD(bus_alloc_resource, ata_cbus_alloc_resource), 217 DEVMETHOD(bus_setup_intr, ata_cbus_setup_intr), 218 DEVMETHOD(bus_print_child, ata_cbus_print_child), 219 { 0, 0 } 220}; 221 222static driver_t ata_cbus_driver = { 223 "atacbus", 224 ata_cbus_methods, 225 sizeof(struct ata_cbus_controller), 226}; 227 228static devclass_t ata_cbus_devclass; 229 230DRIVER_MODULE(atacbus, isa, ata_cbus_driver, ata_cbus_devclass, 0, 0); 231 232static int 233ata_cbussub_probe(device_t dev) 234{ 235 struct ata_channel *ch = device_get_softc(dev); 236 device_t *children; 237 int count, i; 238 239 /* find channel number on this controller */ 240 device_get_children(device_get_parent(dev), &children, &count); 241 for (i = 0; i < count; i++) { 242 if (children[i] == dev) 243 ch->unit = i; 244 } 245 free(children, M_TEMP); 246 ch->flags |= ATA_USE_16BIT | ATA_USE_PC98GEOM; 247 ch->intr_func = ata_cbus_intr; 248 ch->lock_func = ata_cbus_banking; 249 return ata_probe(dev); 250} 251 252static device_method_t ata_cbussub_methods[] = { 253 /* device interface */ 254 DEVMETHOD(device_probe, ata_cbussub_probe), 255 DEVMETHOD(device_attach, ata_attach), 256 DEVMETHOD(device_detach, ata_detach), 257 DEVMETHOD(device_resume, ata_resume), 258 { 0, 0 } 259}; 260 261static driver_t ata_cbussub_driver = { 262 "ata", 263 ata_cbussub_methods, 264 sizeof(struct ata_channel), 265}; 266 267DRIVER_MODULE(ata, atacbus, ata_cbussub_driver, ata_devclass, 0, 0); 268