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