1 /* 2 * Linux ARCnet driver - COM20020 PCMCIA support 3 * 4 * Written 1994-1999 by Avery Pennarun, 5 * based on an ISA version by David Woodhouse. 6 * Derived from ibmtr_cs.c by Steve Kipisz (pcmcia-cs 3.1.4) 7 * which was derived from pcnet_cs.c by David Hinds. 8 * Some additional portions derived from skeleton.c by Donald Becker. 9 * 10 * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com) 11 * for sponsoring the further development of this driver. 12 * 13 * ********************** 14 * 15 * The original copyright of skeleton.c was as follows: 16 * 17 * skeleton.c Written 1993 by Donald Becker. 18 * Copyright 1993 United States Government as represented by the 19 * Director, National Security Agency. This software may only be used 20 * and distributed according to the terms of the GNU General Public License as 21 * modified by SRC, incorporated herein by reference. 22 * 23 * ********************** 24 * Changes: 25 * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/2000 26 * - reorganize kmallocs in com20020_attach, checking all for failure 27 * and releasing the previous allocations if one fails 28 * ********************** 29 * 30 * For more details, see drivers/net/arcnet.c 31 * 32 * ********************** 33 */ 34 #include <linux/kernel.h> 35 #include <linux/init.h> 36 #include <linux/ptrace.h> 37 #include <linux/slab.h> 38 #include <linux/string.h> 39 #include <linux/timer.h> 40 #include <linux/delay.h> 41 #include <linux/module.h> 42 #include <linux/netdevice.h> 43 #include <linux/arcdevice.h> 44 #include <linux/com20020.h> 45 46 #include <pcmcia/cistpl.h> 47 #include <pcmcia/ds.h> 48 49 #include <asm/io.h> 50 51 #define VERSION "arcnet: COM20020 PCMCIA support loaded.\n" 52 53 54 static void regdump(struct net_device *dev) 55 { 56 #ifdef DEBUG 57 int ioaddr = dev->base_addr; 58 int count; 59 60 netdev_dbg(dev, "register dump:\n"); 61 for (count = ioaddr; count < ioaddr + 16; count++) 62 { 63 if (!(count % 16)) 64 pr_cont("%04X:", count); 65 pr_cont(" %02X", inb(count)); 66 } 67 pr_cont("\n"); 68 69 netdev_dbg(dev, "buffer0 dump:\n"); 70 /* set up the address register */ 71 count = 0; 72 outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI); 73 outb(count & 0xff, _ADDR_LO); 74 75 for (count = 0; count < 256+32; count++) 76 { 77 if (!(count % 16)) 78 pr_cont("%04X:", count); 79 80 /* copy the data */ 81 pr_cont(" %02X", inb(_MEMDATA)); 82 } 83 pr_cont("\n"); 84 #endif 85 } 86 87 88 89 /*====================================================================*/ 90 91 /* Parameters that can be set with 'insmod' */ 92 93 static int node; 94 static int timeout = 3; 95 static int backplane; 96 static int clockp; 97 static int clockm; 98 99 module_param(node, int, 0); 100 module_param(timeout, int, 0); 101 module_param(backplane, int, 0); 102 module_param(clockp, int, 0); 103 module_param(clockm, int, 0); 104 105 MODULE_LICENSE("GPL"); 106 107 /*====================================================================*/ 108 109 static int com20020_config(struct pcmcia_device *link); 110 static void com20020_release(struct pcmcia_device *link); 111 112 static void com20020_detach(struct pcmcia_device *p_dev); 113 114 /*====================================================================*/ 115 116 typedef struct com20020_dev_t { 117 struct net_device *dev; 118 } com20020_dev_t; 119 120 static int com20020_probe(struct pcmcia_device *p_dev) 121 { 122 com20020_dev_t *info; 123 struct net_device *dev; 124 struct arcnet_local *lp; 125 126 dev_dbg(&p_dev->dev, "com20020_attach()\n"); 127 128 /* Create new network device */ 129 info = kzalloc(sizeof(struct com20020_dev_t), GFP_KERNEL); 130 if (!info) 131 goto fail_alloc_info; 132 133 dev = alloc_arcdev(""); 134 if (!dev) 135 goto fail_alloc_dev; 136 137 lp = netdev_priv(dev); 138 lp->timeout = timeout; 139 lp->backplane = backplane; 140 lp->clockp = clockp; 141 lp->clockm = clockm & 3; 142 lp->hw.owner = THIS_MODULE; 143 144 /* fill in our module parameters as defaults */ 145 dev->dev_addr[0] = node; 146 147 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; 148 p_dev->resource[0]->end = 16; 149 p_dev->config_flags |= CONF_ENABLE_IRQ; 150 151 info->dev = dev; 152 p_dev->priv = info; 153 154 return com20020_config(p_dev); 155 156 fail_alloc_dev: 157 kfree(info); 158 fail_alloc_info: 159 return -ENOMEM; 160 } /* com20020_attach */ 161 162 static void com20020_detach(struct pcmcia_device *link) 163 { 164 struct com20020_dev_t *info = link->priv; 165 struct net_device *dev = info->dev; 166 167 dev_dbg(&link->dev, "detach...\n"); 168 169 dev_dbg(&link->dev, "com20020_detach\n"); 170 171 dev_dbg(&link->dev, "unregister...\n"); 172 173 unregister_netdev(dev); 174 175 /* 176 * this is necessary because we register our IRQ separately 177 * from card services. 178 */ 179 if (dev->irq) 180 free_irq(dev->irq, dev); 181 182 com20020_release(link); 183 184 /* Unlink device structure, free bits */ 185 dev_dbg(&link->dev, "unlinking...\n"); 186 if (link->priv) 187 { 188 dev = info->dev; 189 if (dev) 190 { 191 dev_dbg(&link->dev, "kfree...\n"); 192 free_netdev(dev); 193 } 194 dev_dbg(&link->dev, "kfree2...\n"); 195 kfree(info); 196 } 197 198 } /* com20020_detach */ 199 200 static int com20020_config(struct pcmcia_device *link) 201 { 202 struct arcnet_local *lp; 203 com20020_dev_t *info; 204 struct net_device *dev; 205 int i, ret; 206 int ioaddr; 207 208 info = link->priv; 209 dev = info->dev; 210 211 dev_dbg(&link->dev, "config...\n"); 212 213 dev_dbg(&link->dev, "com20020_config\n"); 214 215 dev_dbg(&link->dev, "baseport1 is %Xh\n", 216 (unsigned int) link->resource[0]->start); 217 218 i = -ENODEV; 219 link->io_lines = 16; 220 221 if (!link->resource[0]->start) 222 { 223 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10) 224 { 225 link->resource[0]->start = ioaddr; 226 i = pcmcia_request_io(link); 227 if (i == 0) 228 break; 229 } 230 } 231 else 232 i = pcmcia_request_io(link); 233 234 if (i != 0) 235 { 236 dev_dbg(&link->dev, "requestIO failed totally!\n"); 237 goto failed; 238 } 239 240 ioaddr = dev->base_addr = link->resource[0]->start; 241 dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr); 242 243 dev_dbg(&link->dev, "request IRQ %d\n", 244 link->irq); 245 if (!link->irq) 246 { 247 dev_dbg(&link->dev, "requestIRQ failed totally!\n"); 248 goto failed; 249 } 250 251 dev->irq = link->irq; 252 253 ret = pcmcia_enable_device(link); 254 if (ret) 255 goto failed; 256 257 if (com20020_check(dev)) 258 { 259 regdump(dev); 260 goto failed; 261 } 262 263 lp = netdev_priv(dev); 264 lp->card_name = "PCMCIA COM20020"; 265 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */ 266 267 SET_NETDEV_DEV(dev, &link->dev); 268 269 i = com20020_found(dev, 0); /* calls register_netdev */ 270 271 if (i != 0) { 272 dev_notice(&link->dev, 273 "com20020_found() failed\n"); 274 goto failed; 275 } 276 277 netdev_dbg(dev, "port %#3lx, irq %d\n", 278 dev->base_addr, dev->irq); 279 return 0; 280 281 failed: 282 dev_dbg(&link->dev, "com20020_config failed...\n"); 283 com20020_release(link); 284 return -ENODEV; 285 } /* com20020_config */ 286 287 static void com20020_release(struct pcmcia_device *link) 288 { 289 dev_dbg(&link->dev, "com20020_release\n"); 290 pcmcia_disable_device(link); 291 } 292 293 static int com20020_suspend(struct pcmcia_device *link) 294 { 295 com20020_dev_t *info = link->priv; 296 struct net_device *dev = info->dev; 297 298 if (link->open) 299 netif_device_detach(dev); 300 301 return 0; 302 } 303 304 static int com20020_resume(struct pcmcia_device *link) 305 { 306 com20020_dev_t *info = link->priv; 307 struct net_device *dev = info->dev; 308 309 if (link->open) { 310 int ioaddr = dev->base_addr; 311 struct arcnet_local *lp = netdev_priv(dev); 312 ARCRESET; 313 } 314 315 return 0; 316 } 317 318 static const struct pcmcia_device_id com20020_ids[] = { 319 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.", 320 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf), 321 PCMCIA_DEVICE_PROD_ID12("SoHard AG", 322 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7), 323 PCMCIA_DEVICE_NULL 324 }; 325 MODULE_DEVICE_TABLE(pcmcia, com20020_ids); 326 327 static struct pcmcia_driver com20020_cs_driver = { 328 .owner = THIS_MODULE, 329 .name = "com20020_cs", 330 .probe = com20020_probe, 331 .remove = com20020_detach, 332 .id_table = com20020_ids, 333 .suspend = com20020_suspend, 334 .resume = com20020_resume, 335 }; 336 module_pcmcia_driver(com20020_cs_driver); 337