1/* 2 * PCMCIA client driver for AVM A1 / Fritz!PCMCIA 3 * 4 * Author Carsten Paeth 5 * Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.de> 6 * 7 * This software may be used and distributed according to the terms 8 * of the GNU General Public License, incorporated herein by reference. 9 * 10 */ 11 12#include <linux/module.h> 13 14 15#include <linux/kernel.h> 16#include <linux/init.h> 17#include <linux/ptrace.h> 18#include <linux/slab.h> 19#include <linux/string.h> 20#include <asm/io.h> 21#include <asm/system.h> 22 23#include <pcmcia/cs.h> 24#include <pcmcia/cistpl.h> 25#include <pcmcia/ds.h> 26#include "hisax_cfg.h" 27 28MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards"); 29MODULE_AUTHOR("Carsten Paeth"); 30MODULE_LICENSE("GPL"); 31 32 33/*====================================================================*/ 34 35/* Parameters that can be set with 'insmod' */ 36 37static int isdnprot = 2; 38 39module_param(isdnprot, int, 0); 40 41/*====================================================================*/ 42 43/* 44 The event() function is this driver's Card Services event handler. 45 It will be called by Card Services when an appropriate card status 46 event is received. The config() and release() entry points are 47 used to configure or release a socket, in response to card insertion 48 and ejection events. They are invoked from the skeleton event 49 handler. 50*/ 51 52static int avma1cs_config(struct pcmcia_device *link) __devinit ; 53static void avma1cs_release(struct pcmcia_device *link); 54 55/* 56 The attach() and detach() entry points are used to create and destroy 57 "instances" of the driver, where each instance represents everything 58 needed to manage one actual PCMCIA card. 59*/ 60 61static void avma1cs_detach(struct pcmcia_device *p_dev) __devexit ; 62 63 64/*====================================================================== 65 66 avma1cs_attach() creates an "instance" of the driver, allocating 67 local data structures for one device. The device is registered 68 with Card Services. 69 70 The dev_link structure is initialized, but we don't actually 71 configure the card at this point -- we wait until we receive a 72 card insertion event. 73 74======================================================================*/ 75 76static int __devinit avma1cs_probe(struct pcmcia_device *p_dev) 77{ 78 dev_dbg(&p_dev->dev, "avma1cs_attach()\n"); 79 80 /* The io structure describes IO port mapping */ 81 p_dev->resource[0]->end = 16; 82 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; 83 p_dev->resource[1]->end = 16; 84 p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_16; 85 86 /* General socket configuration */ 87 p_dev->conf.Attributes = CONF_ENABLE_IRQ; 88 p_dev->conf.IntType = INT_MEMORY_AND_IO; 89 p_dev->conf.ConfigIndex = 1; 90 p_dev->conf.Present = PRESENT_OPTION; 91 92 return avma1cs_config(p_dev); 93} /* avma1cs_attach */ 94 95/*====================================================================== 96 97 This deletes a driver "instance". The device is de-registered 98 with Card Services. If it has been released, all local data 99 structures are freed. Otherwise, the structures will be freed 100 when the device is released. 101 102======================================================================*/ 103 104static void __devexit avma1cs_detach(struct pcmcia_device *link) 105{ 106 dev_dbg(&link->dev, "avma1cs_detach(0x%p)\n", link); 107 avma1cs_release(link); 108 kfree(link->priv); 109} /* avma1cs_detach */ 110 111/*====================================================================== 112 113 avma1cs_config() is scheduled to run after a CARD_INSERTION event 114 is received, to configure the PCMCIA socket, and to make the 115 ethernet device available to the system. 116 117======================================================================*/ 118 119static int avma1cs_configcheck(struct pcmcia_device *p_dev, 120 cistpl_cftable_entry_t *cf, 121 cistpl_cftable_entry_t *dflt, 122 unsigned int vcc, 123 void *priv_data) 124{ 125 if (cf->io.nwin <= 0) 126 return -ENODEV; 127 128 p_dev->resource[0]->start = cf->io.win[0].base; 129 p_dev->resource[0]->end = cf->io.win[0].len; 130 p_dev->io_lines = 5; 131 return pcmcia_request_io(p_dev); 132} 133 134 135static int __devinit avma1cs_config(struct pcmcia_device *link) 136{ 137 int i = -1; 138 char devname[128]; 139 IsdnCard_t icard; 140 int busy = 0; 141 142 dev_dbg(&link->dev, "avma1cs_config(0x%p)\n", link); 143 144 devname[0] = 0; 145 if (link->prod_id[1]) 146 strlcpy(devname, link->prod_id[1], sizeof(devname)); 147 148 if (pcmcia_loop_config(link, avma1cs_configcheck, NULL)) 149 return -ENODEV; 150 151 do { 152 /* 153 * allocate an interrupt line 154 */ 155 if (!link->irq) { 156 /* undo */ 157 pcmcia_disable_device(link); 158 break; 159 } 160 161 /* 162 * configure the PCMCIA socket 163 */ 164 i = pcmcia_request_configuration(link, &link->conf); 165 if (i != 0) { 166 pcmcia_disable_device(link); 167 break; 168 } 169 170 } while (0); 171 172 /* If any step failed, release any partially configured state */ 173 if (i != 0) { 174 avma1cs_release(link); 175 return -ENODEV; 176 } 177 178 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n", 179 (unsigned int) link->resource[0]->start, link->irq); 180 181 icard.para[0] = link->irq; 182 icard.para[1] = link->resource[0]->start; 183 icard.protocol = isdnprot; 184 icard.typ = ISDN_CTYPE_A1_PCMCIA; 185 186 i = hisax_init_pcmcia(link, &busy, &icard); 187 if (i < 0) { 188 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 " 189 "PCMCIA %d at i/o %#x\n", i, 190 (unsigned int) link->resource[0]->start); 191 avma1cs_release(link); 192 return -ENODEV; 193 } 194 link->priv = (void *) (unsigned long) i; 195 196 return 0; 197} /* avma1cs_config */ 198 199/*====================================================================== 200 201 After a card is removed, avma1cs_release() will unregister the net 202 device, and release the PCMCIA configuration. If the device is 203 still open, this will be postponed until it is closed. 204 205======================================================================*/ 206 207static void avma1cs_release(struct pcmcia_device *link) 208{ 209 unsigned long minor = (unsigned long) link->priv; 210 211 dev_dbg(&link->dev, "avma1cs_release(0x%p)\n", link); 212 213 /* now unregister function with hisax */ 214 HiSax_closecard(minor); 215 216 pcmcia_disable_device(link); 217} /* avma1cs_release */ 218 219 220static struct pcmcia_device_id avma1cs_ids[] = { 221 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb), 222 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b), 223 PCMCIA_DEVICE_NULL 224}; 225MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids); 226 227static struct pcmcia_driver avma1cs_driver = { 228 .owner = THIS_MODULE, 229 .drv = { 230 .name = "avma1_cs", 231 }, 232 .probe = avma1cs_probe, 233 .remove = __devexit_p(avma1cs_detach), 234 .id_table = avma1cs_ids, 235}; 236 237/*====================================================================*/ 238 239static int __init init_avma1_cs(void) 240{ 241 return(pcmcia_register_driver(&avma1cs_driver)); 242} 243 244static void __exit exit_avma1_cs(void) 245{ 246 pcmcia_unregister_driver(&avma1cs_driver); 247} 248 249module_init(init_avma1_cs); 250module_exit(exit_avma1_cs); 251