1/*====================================================================== 2 3 An elsa_cs PCMCIA client driver 4 5 This driver is for the Elsa PCM ISDN Cards, i.e. the MicroLink 6 7 8 The contents of this file are subject to the Mozilla Public 9 License Version 1.1 (the "License"); you may not use this file 10 except in compliance with the License. You may obtain a copy of 11 the License at http://www.mozilla.org/MPL/ 12 13 Software distributed under the License is distributed on an "AS 14 IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 15 implied. See the License for the specific language governing 16 rights and limitations under the License. 17 18 The initial developer of the original code is David A. Hinds 19 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds 20 are Copyright (C) 1999 David A. Hinds. All Rights Reserved. 21 22 Modifications from dummy_cs.c are Copyright (C) 1999-2001 Klaus 23 Lichtenwalder <Lichtenwalder@ACM.org>. All Rights Reserved. 24 25 Alternatively, the contents of this file may be used under the 26 terms of the GNU General Public License version 2 (the "GPL"), in 27 which case the provisions of the GPL are applicable instead of the 28 above. If you wish to allow the use of your version of this file 29 only under the terms of the GPL and not to allow others to use 30 your version of this file under the MPL, indicate your decision 31 by deleting the provisions above and replace them with the notice 32 and other provisions required by the GPL. If you do not delete 33 the provisions above, a recipient may use your version of this 34 file under either the MPL or the GPL. 35 36 ======================================================================*/ 37 38#include <linux/module.h> 39#include <linux/kernel.h> 40#include <linux/init.h> 41#include <linux/ptrace.h> 42#include <linux/slab.h> 43#include <linux/string.h> 44#include <linux/timer.h> 45#include <linux/ioport.h> 46#include <asm/io.h> 47 48#include <pcmcia/cistpl.h> 49#include <pcmcia/cisreg.h> 50#include <pcmcia/ds.h> 51#include "hisax_cfg.h" 52 53MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards"); 54MODULE_AUTHOR("Klaus Lichtenwalder"); 55MODULE_LICENSE("Dual MPL/GPL"); 56 57 58/*====================================================================*/ 59 60/* Parameters that can be set with 'insmod' */ 61 62static int protocol = 2; /* EURO-ISDN Default */ 63module_param(protocol, int, 0); 64 65static int elsa_cs_config(struct pcmcia_device *link); 66static void elsa_cs_release(struct pcmcia_device *link); 67static void elsa_cs_detach(struct pcmcia_device *p_dev); 68 69typedef struct local_info_t { 70 struct pcmcia_device *p_dev; 71 int busy; 72 int cardnr; 73} local_info_t; 74 75static int elsa_cs_probe(struct pcmcia_device *link) 76{ 77 local_info_t *local; 78 79 dev_dbg(&link->dev, "elsa_cs_attach()\n"); 80 81 /* Allocate space for private device-specific data */ 82 local = kzalloc(sizeof(local_info_t), GFP_KERNEL); 83 if (!local) return -ENOMEM; 84 85 local->p_dev = link; 86 link->priv = local; 87 88 local->cardnr = -1; 89 90 return elsa_cs_config(link); 91} /* elsa_cs_attach */ 92 93static void elsa_cs_detach(struct pcmcia_device *link) 94{ 95 local_info_t *info = link->priv; 96 97 dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link); 98 99 info->busy = 1; 100 elsa_cs_release(link); 101 102 kfree(info); 103} /* elsa_cs_detach */ 104 105static int elsa_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data) 106{ 107 int j; 108 109 p_dev->io_lines = 3; 110 p_dev->resource[0]->end = 8; 111 p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH; 112 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; 113 114 if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) { 115 printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n"); 116 if (!pcmcia_request_io(p_dev)) 117 return 0; 118 } else { 119 printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n"); 120 for (j = 0x2f0; j > 0x100; j -= 0x10) { 121 p_dev->resource[0]->start = j; 122 if (!pcmcia_request_io(p_dev)) 123 return 0; 124 } 125 } 126 return -ENODEV; 127} 128 129static int elsa_cs_config(struct pcmcia_device *link) 130{ 131 int i; 132 IsdnCard_t icard; 133 134 dev_dbg(&link->dev, "elsa_config(0x%p)\n", link); 135 136 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; 137 138 i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL); 139 if (i != 0) 140 goto failed; 141 142 if (!link->irq) 143 goto failed; 144 145 i = pcmcia_enable_device(link); 146 if (i != 0) 147 goto failed; 148 149 icard.para[0] = link->irq; 150 icard.para[1] = link->resource[0]->start; 151 icard.protocol = protocol; 152 icard.typ = ISDN_CTYPE_ELSA_PCMCIA; 153 154 i = hisax_init_pcmcia(link, &(((local_info_t *)link->priv)->busy), &icard); 155 if (i < 0) { 156 printk(KERN_ERR "elsa_cs: failed to initialize Elsa " 157 "PCMCIA %d with %pR\n", i, link->resource[0]); 158 elsa_cs_release(link); 159 } else 160 ((local_info_t *)link->priv)->cardnr = i; 161 162 return 0; 163failed: 164 elsa_cs_release(link); 165 return -ENODEV; 166} /* elsa_cs_config */ 167 168static void elsa_cs_release(struct pcmcia_device *link) 169{ 170 local_info_t *local = link->priv; 171 172 dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link); 173 174 if (local) { 175 if (local->cardnr >= 0) { 176 /* no unregister function with hisax */ 177 HiSax_closecard(local->cardnr); 178 } 179 } 180 181 pcmcia_disable_device(link); 182} /* elsa_cs_release */ 183 184static int elsa_suspend(struct pcmcia_device *link) 185{ 186 local_info_t *dev = link->priv; 187 188 dev->busy = 1; 189 190 return 0; 191} 192 193static int elsa_resume(struct pcmcia_device *link) 194{ 195 local_info_t *dev = link->priv; 196 197 dev->busy = 0; 198 199 return 0; 200} 201 202static const struct pcmcia_device_id elsa_ids[] = { 203 PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257), 204 PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257), 205 PCMCIA_DEVICE_NULL 206}; 207MODULE_DEVICE_TABLE(pcmcia, elsa_ids); 208 209static struct pcmcia_driver elsa_cs_driver = { 210 .owner = THIS_MODULE, 211 .name = "elsa_cs", 212 .probe = elsa_cs_probe, 213 .remove = elsa_cs_detach, 214 .id_table = elsa_ids, 215 .suspend = elsa_suspend, 216 .resume = elsa_resume, 217}; 218module_pcmcia_driver(elsa_cs_driver); 219