1 /* orinoco_nortel.c 2 * 3 * Driver for Prism II devices which would usually be driven by orinoco_cs, 4 * but are connected to the PCI bus by a PCI-to-PCMCIA adapter used in 5 * Nortel emobility, Symbol LA-4113 and Symbol LA-4123. 6 * 7 * Copyright (C) 2002 Tobias Hoffmann 8 * (C) 2003 Christoph Jungegger <disdos@traum404.de> 9 * 10 * Some of this code is borrowed from orinoco_plx.c 11 * Copyright (C) 2001 Daniel Barlow 12 * Some of this code is borrowed from orinoco_pci.c 13 * Copyright (C) 2001 Jean Tourrilhes 14 * Some of this code is "inspired" by linux-wlan-ng-0.1.10, but nothing 15 * has been copied from it. linux-wlan-ng-0.1.10 is originally : 16 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. 17 * 18 * The contents of this file are subject to the Mozilla Public License 19 * Version 1.1 (the "License"); you may not use this file except in 20 * compliance with the License. You may obtain a copy of the License 21 * at http://www.mozilla.org/MPL/ 22 * 23 * Software distributed under the License is distributed on an "AS IS" 24 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See 25 * the License for the specific language governing rights and 26 * limitations under the License. 27 * 28 * Alternatively, the contents of this file may be used under the 29 * terms of the GNU General Public License version 2 (the "GPL"), in 30 * which case the provisions of the GPL are applicable instead of the 31 * above. If you wish to allow the use of your version of this file 32 * only under the terms of the GPL and not to allow others to use your 33 * version of this file under the MPL, indicate your decision by 34 * deleting the provisions above and replace them with the notice and 35 * other provisions required by the GPL. If you do not delete the 36 * provisions above, a recipient may use your version of this file 37 * under either the MPL or the GPL. 38 */ 39 40 #define DRIVER_NAME "orinoco_nortel" 41 #define PFX DRIVER_NAME ": " 42 43 #include <linux/module.h> 44 #include <linux/kernel.h> 45 #include <linux/init.h> 46 #include <linux/delay.h> 47 #include <linux/pci.h> 48 #include <pcmcia/cisreg.h> 49 50 #include "orinoco.h" 51 #include "orinoco_pci.h" 52 53 #define COR_OFFSET (0xe0) /* COR attribute offset of Prism2 PC card */ 54 #define COR_VALUE (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */ 55 56 57 /* 58 * Do a soft reset of the card using the Configuration Option Register 59 * We need this to get going... 60 * This is the part of the code that is strongly inspired from wlan-ng 61 * 62 * Note bis : Don't try to access HERMES_CMD during the reset phase. 63 * It just won't work ! 64 */ 65 static int orinoco_nortel_cor_reset(struct orinoco_private *priv) 66 { 67 struct orinoco_pci_card *card = priv->card; 68 69 /* Assert the reset until the card notices */ 70 iowrite16(8, card->bridge_io + 2); 71 ioread16(card->attr_io + COR_OFFSET); 72 iowrite16(0x80, card->attr_io + COR_OFFSET); 73 mdelay(1); 74 75 /* Give time for the card to recover from this hard effort */ 76 iowrite16(0, card->attr_io + COR_OFFSET); 77 iowrite16(0, card->attr_io + COR_OFFSET); 78 mdelay(1); 79 80 /* Set COR as usual */ 81 iowrite16(COR_VALUE, card->attr_io + COR_OFFSET); 82 iowrite16(COR_VALUE, card->attr_io + COR_OFFSET); 83 mdelay(1); 84 85 iowrite16(0x228, card->bridge_io + 2); 86 87 return 0; 88 } 89 90 static int orinoco_nortel_hw_init(struct orinoco_pci_card *card) 91 { 92 int i; 93 u32 reg; 94 95 /* Setup bridge */ 96 if (ioread16(card->bridge_io) & 1) { 97 printk(KERN_ERR PFX "brg1 answer1 wrong\n"); 98 return -EBUSY; 99 } 100 iowrite16(0x118, card->bridge_io + 2); 101 iowrite16(0x108, card->bridge_io + 2); 102 mdelay(30); 103 iowrite16(0x8, card->bridge_io + 2); 104 for (i = 0; i < 30; i++) { 105 mdelay(30); 106 if (ioread16(card->bridge_io) & 0x10) 107 break; 108 } 109 if (i == 30) { 110 printk(KERN_ERR PFX "brg1 timed out\n"); 111 return -EBUSY; 112 } 113 if (ioread16(card->attr_io + COR_OFFSET) & 1) { 114 printk(KERN_ERR PFX "brg2 answer1 wrong\n"); 115 return -EBUSY; 116 } 117 if (ioread16(card->attr_io + COR_OFFSET + 2) & 1) { 118 printk(KERN_ERR PFX "brg2 answer2 wrong\n"); 119 return -EBUSY; 120 } 121 if (ioread16(card->attr_io + COR_OFFSET + 4) & 1) { 122 printk(KERN_ERR PFX "brg2 answer3 wrong\n"); 123 return -EBUSY; 124 } 125 126 /* Set the PCMCIA COR register */ 127 iowrite16(COR_VALUE, card->attr_io + COR_OFFSET); 128 mdelay(1); 129 reg = ioread16(card->attr_io + COR_OFFSET); 130 if (reg != COR_VALUE) { 131 printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n", 132 reg); 133 return -EBUSY; 134 } 135 136 /* Set LEDs */ 137 iowrite16(1, card->bridge_io + 10); 138 return 0; 139 } 140 141 static int orinoco_nortel_init_one(struct pci_dev *pdev, 142 const struct pci_device_id *ent) 143 { 144 int err; 145 struct orinoco_private *priv; 146 struct orinoco_pci_card *card; 147 void __iomem *hermes_io, *bridge_io, *attr_io; 148 149 err = pci_enable_device(pdev); 150 if (err) { 151 printk(KERN_ERR PFX "Cannot enable PCI device\n"); 152 return err; 153 } 154 155 err = pci_request_regions(pdev, DRIVER_NAME); 156 if (err) { 157 printk(KERN_ERR PFX "Cannot obtain PCI resources\n"); 158 goto fail_resources; 159 } 160 161 bridge_io = pci_iomap(pdev, 0, 0); 162 if (!bridge_io) { 163 printk(KERN_ERR PFX "Cannot map bridge registers\n"); 164 err = -EIO; 165 goto fail_map_bridge; 166 } 167 168 attr_io = pci_iomap(pdev, 1, 0); 169 if (!attr_io) { 170 printk(KERN_ERR PFX "Cannot map PCMCIA attributes\n"); 171 err = -EIO; 172 goto fail_map_attr; 173 } 174 175 hermes_io = pci_iomap(pdev, 2, 0); 176 if (!hermes_io) { 177 printk(KERN_ERR PFX "Cannot map chipset registers\n"); 178 err = -EIO; 179 goto fail_map_hermes; 180 } 181 182 /* Allocate network device */ 183 priv = alloc_orinocodev(sizeof(*card), &pdev->dev, 184 orinoco_nortel_cor_reset, NULL); 185 if (!priv) { 186 printk(KERN_ERR PFX "Cannot allocate network device\n"); 187 err = -ENOMEM; 188 goto fail_alloc; 189 } 190 191 card = priv->card; 192 card->bridge_io = bridge_io; 193 card->attr_io = attr_io; 194 195 hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING); 196 197 err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED, 198 DRIVER_NAME, priv); 199 if (err) { 200 printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq); 201 err = -EBUSY; 202 goto fail_irq; 203 } 204 205 err = orinoco_nortel_hw_init(card); 206 if (err) { 207 printk(KERN_ERR PFX "Hardware initialization failed\n"); 208 goto fail; 209 } 210 211 err = orinoco_nortel_cor_reset(priv); 212 if (err) { 213 printk(KERN_ERR PFX "Initial reset failed\n"); 214 goto fail; 215 } 216 217 err = orinoco_init(priv); 218 if (err) { 219 printk(KERN_ERR PFX "orinoco_init() failed\n"); 220 goto fail; 221 } 222 223 err = orinoco_if_add(priv, 0, 0, NULL); 224 if (err) { 225 printk(KERN_ERR PFX "orinoco_if_add() failed\n"); 226 goto fail_wiphy; 227 } 228 229 pci_set_drvdata(pdev, priv); 230 231 return 0; 232 233 fail_wiphy: 234 wiphy_unregister(priv_to_wiphy(priv)); 235 fail: 236 free_irq(pdev->irq, priv); 237 238 fail_irq: 239 free_orinocodev(priv); 240 241 fail_alloc: 242 pci_iounmap(pdev, hermes_io); 243 244 fail_map_hermes: 245 pci_iounmap(pdev, attr_io); 246 247 fail_map_attr: 248 pci_iounmap(pdev, bridge_io); 249 250 fail_map_bridge: 251 pci_release_regions(pdev); 252 253 fail_resources: 254 pci_disable_device(pdev); 255 256 return err; 257 } 258 259 static void orinoco_nortel_remove_one(struct pci_dev *pdev) 260 { 261 struct orinoco_private *priv = pci_get_drvdata(pdev); 262 struct orinoco_pci_card *card = priv->card; 263 264 /* Clear LEDs */ 265 iowrite16(0, card->bridge_io + 10); 266 267 orinoco_if_del(priv); 268 wiphy_unregister(priv_to_wiphy(priv)); 269 free_irq(pdev->irq, priv); 270 free_orinocodev(priv); 271 pci_iounmap(pdev, priv->hw.iobase); 272 pci_iounmap(pdev, card->attr_io); 273 pci_iounmap(pdev, card->bridge_io); 274 pci_release_regions(pdev); 275 pci_disable_device(pdev); 276 } 277 278 static const struct pci_device_id orinoco_nortel_id_table[] = { 279 /* Nortel emobility PCI */ 280 {0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,}, 281 /* Symbol LA-4123 PCI */ 282 {0x1562, 0x0001, PCI_ANY_ID, PCI_ANY_ID,}, 283 {0,}, 284 }; 285 286 MODULE_DEVICE_TABLE(pci, orinoco_nortel_id_table); 287 288 static struct pci_driver orinoco_nortel_driver = { 289 .name = DRIVER_NAME, 290 .id_table = orinoco_nortel_id_table, 291 .probe = orinoco_nortel_init_one, 292 .remove = orinoco_nortel_remove_one, 293 .driver.pm = &orinoco_pci_pm_ops, 294 }; 295 296 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION 297 " (Tobias Hoffmann & Christoph Jungegger <disdos@traum404.de>)"; 298 MODULE_AUTHOR("Christoph Jungegger <disdos@traum404.de>"); 299 MODULE_DESCRIPTION("Driver for wireless LAN cards using the Nortel PCI bridge"); 300 MODULE_LICENSE("Dual MPL/GPL"); 301 302 static int __init orinoco_nortel_init(void) 303 { 304 printk(KERN_DEBUG "%s\n", version); 305 return pci_register_driver(&orinoco_nortel_driver); 306 } 307 308 static void __exit orinoco_nortel_exit(void) 309 { 310 pci_unregister_driver(&orinoco_nortel_driver); 311 } 312 313 module_init(orinoco_nortel_init); 314 module_exit(orinoco_nortel_exit); 315 316 /* 317 * Local variables: 318 * c-indent-level: 8 319 * c-basic-offset: 8 320 * tab-width: 8 321 * End: 322 */ 323