331 lines · c
1/*2 * Linux ARCnet driver - COM20020 PCMCIA support3 *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 the19 * Director, National Security Agency. This software may only be used20 * and distributed according to the terms of the GNU General Public License as21 * modified by SRC, incorporated herein by reference.22 *23 * **********************24 * Changes:25 * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/200026 * - reorganize kmallocs in com20020_attach, checking all for failure27 * and releasing the previous allocations if one fails28 * **********************29 *30 * For more details, see drivers/net/arcnet.c31 *32 * **********************33 */34 35#define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt36 37#include <linux/kernel.h>38#include <linux/ptrace.h>39#include <linux/slab.h>40#include <linux/string.h>41#include <linux/timer.h>42#include <linux/delay.h>43#include <linux/module.h>44#include <linux/netdevice.h>45#include <linux/io.h>46#include <pcmcia/cistpl.h>47#include <pcmcia/ds.h>48 49#include "arcdevice.h"50#include "com20020.h"51 52static void regdump(struct net_device *dev)53{54#ifdef DEBUG55 int ioaddr = dev->base_addr;56 int count;57 58 netdev_dbg(dev, "register dump:\n");59 for (count = 0; count < 16; count++) {60 if (!(count % 16))61 pr_cont("%04X:", ioaddr + count);62 pr_cont(" %02X", arcnet_inb(ioaddr, count));63 }64 pr_cont("\n");65 66 netdev_dbg(dev, "buffer0 dump:\n");67 /* set up the address register */68 count = 0;69 arcnet_outb((count >> 8) | RDDATAflag | AUTOINCflag,70 ioaddr, COM20020_REG_W_ADDR_HI);71 arcnet_outb(count & 0xff, ioaddr, COM20020_REG_W_ADDR_LO);72 73 for (count = 0; count < 256 + 32; count++) {74 if (!(count % 16))75 pr_cont("%04X:", count);76 77 /* copy the data */78 pr_cont(" %02X", arcnet_inb(ioaddr, COM20020_REG_RW_MEMDATA));79 }80 pr_cont("\n");81#endif82}83 84/*====================================================================*/85 86/* Parameters that can be set with 'insmod' */87 88static int node;89static int timeout = 3;90static int backplane;91static int clockp;92static int clockm;93 94module_param(node, int, 0);95module_param(timeout, int, 0);96module_param(backplane, int, 0);97module_param(clockp, int, 0);98module_param(clockm, int, 0);99 100MODULE_DESCRIPTION("ARCnet COM20020 chipset PCMCIA driver");101MODULE_LICENSE("GPL");102 103/*====================================================================*/104 105static int com20020_config(struct pcmcia_device *link);106static void com20020_release(struct pcmcia_device *link);107 108static void com20020_detach(struct pcmcia_device *p_dev);109 110/*====================================================================*/111 112static int com20020_probe(struct pcmcia_device *p_dev)113{114 struct com20020_dev *info;115 struct net_device *dev;116 struct arcnet_local *lp;117 int ret = -ENOMEM;118 119 dev_dbg(&p_dev->dev, "com20020_attach()\n");120 121 /* Create new network device */122 info = kzalloc(sizeof(*info), GFP_KERNEL);123 if (!info)124 goto fail_alloc_info;125 126 dev = alloc_arcdev("");127 if (!dev)128 goto fail_alloc_dev;129 130 lp = netdev_priv(dev);131 lp->timeout = timeout;132 lp->backplane = backplane;133 lp->clockp = clockp;134 lp->clockm = clockm & 3;135 lp->hw.owner = THIS_MODULE;136 137 /* fill in our module parameters as defaults */138 arcnet_set_addr(dev, node);139 140 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;141 p_dev->resource[0]->end = 16;142 p_dev->config_flags |= CONF_ENABLE_IRQ;143 144 info->dev = dev;145 p_dev->priv = info;146 147 ret = com20020_config(p_dev);148 if (ret)149 goto fail_config;150 151 return 0;152 153fail_config:154 free_arcdev(dev);155fail_alloc_dev:156 kfree(info);157fail_alloc_info:158 return ret;159} /* com20020_attach */160 161static void com20020_detach(struct pcmcia_device *link)162{163 struct com20020_dev *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 /* this is necessary because we register our IRQ separately175 * from card services.176 */177 if (dev->irq)178 free_irq(dev->irq, dev);179 180 com20020_release(link);181 182 /* Unlink device structure, free bits */183 dev_dbg(&link->dev, "unlinking...\n");184 if (link->priv) {185 dev = info->dev;186 if (dev) {187 dev_dbg(&link->dev, "kfree...\n");188 free_arcdev(dev);189 }190 dev_dbg(&link->dev, "kfree2...\n");191 kfree(info);192 }193 194} /* com20020_detach */195 196static int com20020_config(struct pcmcia_device *link)197{198 struct arcnet_local *lp;199 struct com20020_dev *info;200 struct net_device *dev;201 int i, ret;202 int ioaddr;203 204 info = link->priv;205 dev = info->dev;206 207 dev_dbg(&link->dev, "config...\n");208 209 dev_dbg(&link->dev, "com20020_config\n");210 211 dev_dbg(&link->dev, "baseport1 is %Xh\n",212 (unsigned int)link->resource[0]->start);213 214 i = -ENODEV;215 link->io_lines = 16;216 217 if (!link->resource[0]->start) {218 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10) {219 link->resource[0]->start = ioaddr;220 i = pcmcia_request_io(link);221 if (i == 0)222 break;223 }224 } else {225 i = pcmcia_request_io(link);226 }227 228 if (i != 0) {229 dev_dbg(&link->dev, "requestIO failed totally!\n");230 goto failed;231 }232 233 ioaddr = dev->base_addr = link->resource[0]->start;234 dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr);235 236 dev_dbg(&link->dev, "request IRQ %d\n",237 link->irq);238 if (!link->irq) {239 dev_dbg(&link->dev, "requestIRQ failed totally!\n");240 goto failed;241 }242 243 dev->irq = link->irq;244 245 ret = pcmcia_enable_device(link);246 if (ret)247 goto failed;248 249 if (com20020_check(dev)) {250 regdump(dev);251 goto failed;252 }253 254 lp = netdev_priv(dev);255 lp->card_name = "PCMCIA COM20020";256 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */257 258 SET_NETDEV_DEV(dev, &link->dev);259 260 i = com20020_found(dev, 0); /* calls register_netdev */261 262 if (i != 0) {263 dev_notice(&link->dev,264 "com20020_found() failed\n");265 goto failed;266 }267 268 netdev_dbg(dev, "port %#3lx, irq %d\n",269 dev->base_addr, dev->irq);270 return 0;271 272failed:273 dev_dbg(&link->dev, "com20020_config failed...\n");274 com20020_release(link);275 return -ENODEV;276} /* com20020_config */277 278static void com20020_release(struct pcmcia_device *link)279{280 dev_dbg(&link->dev, "com20020_release\n");281 pcmcia_disable_device(link);282}283 284static int com20020_suspend(struct pcmcia_device *link)285{286 struct com20020_dev *info = link->priv;287 struct net_device *dev = info->dev;288 289 if (link->open)290 netif_device_detach(dev);291 292 return 0;293}294 295static int com20020_resume(struct pcmcia_device *link)296{297 struct com20020_dev *info = link->priv;298 struct net_device *dev = info->dev;299 300 if (link->open) {301 int ioaddr = dev->base_addr;302 struct arcnet_local *lp = netdev_priv(dev);303 304 arcnet_outb(lp->config | 0x80, ioaddr, COM20020_REG_W_CONFIG);305 udelay(5);306 arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);307 }308 309 return 0;310}311 312static const struct pcmcia_device_id com20020_ids[] = {313 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",314 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),315 PCMCIA_DEVICE_PROD_ID12("SoHard AG",316 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),317 PCMCIA_DEVICE_NULL318};319MODULE_DEVICE_TABLE(pcmcia, com20020_ids);320 321static struct pcmcia_driver com20020_cs_driver = {322 .owner = THIS_MODULE,323 .name = "com20020_cs",324 .probe = com20020_probe,325 .remove = com20020_detach,326 .id_table = com20020_ids,327 .suspend = com20020_suspend,328 .resume = com20020_resume,329};330module_pcmcia_driver(com20020_cs_driver);331