Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /********************************************************************* |
| 2 | * |
| 3 | * Filename: nsc-ircc.c |
| 4 | * Version: 1.0 |
| 5 | * Description: Driver for the NSC PC'108 and PC'338 IrDA chipsets |
| 6 | * Status: Stable. |
| 7 | * Author: Dag Brattli <dagb@cs.uit.no> |
| 8 | * Created at: Sat Nov 7 21:43:15 1998 |
| 9 | * Modified at: Wed Mar 1 11:29:34 2000 |
| 10 | * Modified by: Dag Brattli <dagb@cs.uit.no> |
| 11 | * |
| 12 | * Copyright (c) 1998-2000 Dag Brattli <dagb@cs.uit.no> |
| 13 | * Copyright (c) 1998 Lichen Wang, <lwang@actisys.com> |
| 14 | * Copyright (c) 1998 Actisys Corp., www.actisys.com |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 15 | * Copyright (c) 2000-2004 Jean Tourrilhes <jt@hpl.hp.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * All Rights Reserved |
| 17 | * |
| 18 | * This program is free software; you can redistribute it and/or |
| 19 | * modify it under the terms of the GNU General Public License as |
| 20 | * published by the Free Software Foundation; either version 2 of |
| 21 | * the License, or (at your option) any later version. |
| 22 | * |
| 23 | * Neither Dag Brattli nor University of Tromsø admit liability nor |
| 24 | * provide warranty for any of this software. This material is |
| 25 | * provided "AS-IS" and at no charge. |
| 26 | * |
| 27 | * Notice that all functions that needs to access the chip in _any_ |
| 28 | * way, must save BSR register on entry, and restore it on exit. |
| 29 | * It is _very_ important to follow this policy! |
| 30 | * |
| 31 | * __u8 bank; |
| 32 | * |
| 33 | * bank = inb(iobase+BSR); |
| 34 | * |
| 35 | * do_your_stuff_here(); |
| 36 | * |
| 37 | * outb(bank, iobase+BSR); |
| 38 | * |
| 39 | * If you find bugs in this file, its very likely that the same bug |
| 40 | * will also be in w83977af_ir.c since the implementations are quite |
| 41 | * similar. |
| 42 | * |
| 43 | ********************************************************************/ |
| 44 | |
| 45 | #include <linux/module.h> |
| 46 | |
| 47 | #include <linux/kernel.h> |
| 48 | #include <linux/types.h> |
| 49 | #include <linux/skbuff.h> |
| 50 | #include <linux/netdevice.h> |
| 51 | #include <linux/ioport.h> |
| 52 | #include <linux/delay.h> |
| 53 | #include <linux/slab.h> |
| 54 | #include <linux/init.h> |
| 55 | #include <linux/rtnetlink.h> |
| 56 | #include <linux/dma-mapping.h> |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 57 | #include <linux/pnp.h> |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 58 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
| 60 | #include <asm/io.h> |
| 61 | #include <asm/dma.h> |
| 62 | #include <asm/byteorder.h> |
| 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #include <net/irda/wrapper.h> |
| 65 | #include <net/irda/irda.h> |
| 66 | #include <net/irda/irda_device.h> |
| 67 | |
| 68 | #include "nsc-ircc.h" |
| 69 | |
| 70 | #define CHIP_IO_EXTENT 8 |
| 71 | #define BROKEN_DONGLE_ID |
| 72 | |
| 73 | static char *driver_name = "nsc-ircc"; |
| 74 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 75 | /* Power Management */ |
| 76 | #define NSC_IRCC_DRIVER_NAME "nsc-ircc" |
| 77 | static int nsc_ircc_suspend(struct platform_device *dev, pm_message_t state); |
| 78 | static int nsc_ircc_resume(struct platform_device *dev); |
| 79 | |
| 80 | static struct platform_driver nsc_ircc_driver = { |
| 81 | .suspend = nsc_ircc_suspend, |
| 82 | .resume = nsc_ircc_resume, |
| 83 | .driver = { |
| 84 | .name = NSC_IRCC_DRIVER_NAME, |
| 85 | }, |
| 86 | }; |
| 87 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | /* Module parameters */ |
| 89 | static int qos_mtt_bits = 0x07; /* 1 ms or more */ |
| 90 | static int dongle_id; |
| 91 | |
| 92 | /* Use BIOS settions by default, but user may supply module parameters */ |
Jean Tourrilhes | 0ed79c9 | 2006-03-20 18:59:40 -0800 | [diff] [blame] | 93 | static unsigned int io[] = { ~0, ~0, ~0, ~0, ~0 }; |
| 94 | static unsigned int irq[] = { 0, 0, 0, 0, 0 }; |
| 95 | static unsigned int dma[] = { 0, 0, 0, 0, 0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
| 97 | static int nsc_ircc_probe_108(nsc_chip_t *chip, chipio_t *info); |
| 98 | static int nsc_ircc_probe_338(nsc_chip_t *chip, chipio_t *info); |
| 99 | static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info); |
| 100 | static int nsc_ircc_init_108(nsc_chip_t *chip, chipio_t *info); |
| 101 | static int nsc_ircc_init_338(nsc_chip_t *chip, chipio_t *info); |
| 102 | static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info); |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 103 | static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
| 105 | /* These are the known NSC chips */ |
| 106 | static nsc_chip_t chips[] = { |
| 107 | /* Name, {cfg registers}, chip id index reg, chip id expected value, revision mask */ |
| 108 | { "PC87108", { 0x150, 0x398, 0xea }, 0x05, 0x10, 0xf0, |
| 109 | nsc_ircc_probe_108, nsc_ircc_init_108 }, |
| 110 | { "PC87338", { 0x398, 0x15c, 0x2e }, 0x08, 0xb0, 0xf8, |
| 111 | nsc_ircc_probe_338, nsc_ircc_init_338 }, |
| 112 | /* Contributed by Steffen Pingel - IBM X40 */ |
Lamarque Vieira Souza | 2fd19a6 | 2006-09-27 22:48:36 -0700 | [diff] [blame] | 113 | { "PC8738x", { 0x164e, 0x4e, 0x2e }, 0x20, 0xf4, 0xff, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | nsc_ircc_probe_39x, nsc_ircc_init_39x }, |
| 115 | /* Contributed by Jan Frey - IBM A30/A31 */ |
| 116 | { "PC8739x", { 0x2e, 0x4e, 0x0 }, 0x20, 0xea, 0xff, |
| 117 | nsc_ircc_probe_39x, nsc_ircc_init_39x }, |
Ben Collins | d83561a | 2006-06-26 00:02:47 -0700 | [diff] [blame] | 118 | /* IBM ThinkPads using PC8738x (T60/X60/Z60) */ |
| 119 | { "IBM-PC8738x", { 0x2e, 0x4e, 0x0 }, 0x20, 0xf4, 0xff, |
| 120 | nsc_ircc_probe_39x, nsc_ircc_init_39x }, |
| 121 | /* IBM ThinkPads using PC8394T (T43/R52/?) */ |
| 122 | { "IBM-PC8394T", { 0x2e, 0x4e, 0x0 }, 0x20, 0xf9, 0xff, |
| 123 | nsc_ircc_probe_39x, nsc_ircc_init_39x }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | { NULL } |
| 125 | }; |
| 126 | |
Jean Tourrilhes | 0ed79c9 | 2006-03-20 18:59:40 -0800 | [diff] [blame] | 127 | static struct nsc_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | static char *dongle_types[] = { |
| 130 | "Differential serial interface", |
| 131 | "Differential serial interface", |
| 132 | "Reserved", |
| 133 | "Reserved", |
| 134 | "Sharp RY5HD01", |
| 135 | "Reserved", |
| 136 | "Single-ended serial interface", |
| 137 | "Consumer-IR only", |
| 138 | "HP HSDL-2300, HP HSDL-3600/HSDL-3610", |
| 139 | "IBM31T1100 or Temic TFDS6000/TFDS6500", |
| 140 | "Reserved", |
| 141 | "Reserved", |
| 142 | "HP HSDL-1100/HSDL-2100", |
| 143 | "HP HSDL-1100/HSDL-2100", |
| 144 | "Supports SIR Mode only", |
| 145 | "No dongle connected", |
| 146 | }; |
| 147 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 148 | /* PNP probing */ |
| 149 | static chipio_t pnp_info; |
| 150 | static const struct pnp_device_id nsc_ircc_pnp_table[] = { |
| 151 | { .id = "NSC6001", .driver_data = 0 }, |
| 152 | { .id = "IBM0071", .driver_data = 0 }, |
| 153 | { } |
| 154 | }; |
| 155 | |
| 156 | MODULE_DEVICE_TABLE(pnp, nsc_ircc_pnp_table); |
| 157 | |
| 158 | static struct pnp_driver nsc_ircc_pnp_driver = { |
| 159 | .name = "nsc-ircc", |
| 160 | .id_table = nsc_ircc_pnp_table, |
| 161 | .probe = nsc_ircc_pnp_probe, |
| 162 | }; |
| 163 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | /* Some prototypes */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 165 | static int nsc_ircc_open(chipio_t *info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | static int nsc_ircc_close(struct nsc_ircc_cb *self); |
| 167 | static int nsc_ircc_setup(chipio_t *info); |
| 168 | static void nsc_ircc_pio_receive(struct nsc_ircc_cb *self); |
| 169 | static int nsc_ircc_dma_receive(struct nsc_ircc_cb *self); |
| 170 | static int nsc_ircc_dma_receive_complete(struct nsc_ircc_cb *self, int iobase); |
| 171 | static int nsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev); |
| 172 | static int nsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev); |
| 173 | static int nsc_ircc_pio_write(int iobase, __u8 *buf, int len, int fifo_size); |
| 174 | static void nsc_ircc_dma_xmit(struct nsc_ircc_cb *self, int iobase); |
| 175 | static __u8 nsc_ircc_change_speed(struct nsc_ircc_cb *self, __u32 baud); |
| 176 | static int nsc_ircc_is_receiving(struct nsc_ircc_cb *self); |
| 177 | static int nsc_ircc_read_dongle_id (int iobase); |
| 178 | static void nsc_ircc_init_dongle_interface (int iobase, int dongle_id); |
| 179 | |
| 180 | static int nsc_ircc_net_open(struct net_device *dev); |
| 181 | static int nsc_ircc_net_close(struct net_device *dev); |
| 182 | static int nsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 183 | static struct net_device_stats *nsc_ircc_net_get_stats(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 185 | /* Globals */ |
| 186 | static int pnp_registered; |
| 187 | static int pnp_succeeded; |
| 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | /* |
| 190 | * Function nsc_ircc_init () |
| 191 | * |
| 192 | * Initialize chip. Just try to find out how many chips we are dealing with |
| 193 | * and where they are |
| 194 | */ |
| 195 | static int __init nsc_ircc_init(void) |
| 196 | { |
| 197 | chipio_t info; |
| 198 | nsc_chip_t *chip; |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 199 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | int cfg_base; |
| 201 | int cfg, id; |
| 202 | int reg; |
| 203 | int i = 0; |
| 204 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 205 | ret = platform_driver_register(&nsc_ircc_driver); |
| 206 | if (ret) { |
| 207 | IRDA_ERROR("%s, Can't register driver!\n", driver_name); |
| 208 | return ret; |
| 209 | } |
| 210 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 211 | /* Register with PnP subsystem to detect disable ports */ |
| 212 | ret = pnp_register_driver(&nsc_ircc_pnp_driver); |
| 213 | |
Bjorn Helgaas | 803d0ab | 2006-03-27 01:17:06 -0800 | [diff] [blame] | 214 | if (!ret) |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 215 | pnp_registered = 1; |
| 216 | |
| 217 | ret = -ENODEV; |
| 218 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | /* Probe for all the NSC chipsets we know about */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 220 | for (chip = chips; chip->name ; chip++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __FUNCTION__, |
| 222 | chip->name); |
| 223 | |
| 224 | /* Try all config registers for this chip */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 225 | for (cfg = 0; cfg < ARRAY_SIZE(chip->cfg); cfg++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | cfg_base = chip->cfg[cfg]; |
| 227 | if (!cfg_base) |
| 228 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
| 230 | /* Read index register */ |
| 231 | reg = inb(cfg_base); |
| 232 | if (reg == 0xff) { |
| 233 | IRDA_DEBUG(2, "%s() no chip at 0x%03x\n", __FUNCTION__, cfg_base); |
| 234 | continue; |
| 235 | } |
| 236 | |
| 237 | /* Read chip identification register */ |
| 238 | outb(chip->cid_index, cfg_base); |
| 239 | id = inb(cfg_base+1); |
| 240 | if ((id & chip->cid_mask) == chip->cid_value) { |
| 241 | IRDA_DEBUG(2, "%s() Found %s chip, revision=%d\n", |
| 242 | __FUNCTION__, chip->name, id & ~chip->cid_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 244 | /* |
| 245 | * If we found a correct PnP setting, |
| 246 | * we first try it. |
| 247 | */ |
| 248 | if (pnp_succeeded) { |
| 249 | memset(&info, 0, sizeof(chipio_t)); |
| 250 | info.cfg_base = cfg_base; |
| 251 | info.fir_base = pnp_info.fir_base; |
| 252 | info.dma = pnp_info.dma; |
| 253 | info.irq = pnp_info.irq; |
| 254 | |
| 255 | if (info.fir_base < 0x2000) { |
| 256 | IRDA_MESSAGE("%s, chip->init\n", driver_name); |
| 257 | chip->init(chip, &info); |
| 258 | } else |
| 259 | chip->probe(chip, &info); |
| 260 | |
| 261 | if (nsc_ircc_open(&info) >= 0) |
| 262 | ret = 0; |
| 263 | } |
| 264 | |
| 265 | /* |
| 266 | * Opening based on PnP values failed. |
| 267 | * Let's fallback to user values, or probe |
| 268 | * the chip. |
| 269 | */ |
| 270 | if (ret) { |
| 271 | IRDA_DEBUG(2, "%s, PnP init failed\n", driver_name); |
| 272 | memset(&info, 0, sizeof(chipio_t)); |
| 273 | info.cfg_base = cfg_base; |
| 274 | info.fir_base = io[i]; |
| 275 | info.dma = dma[i]; |
| 276 | info.irq = irq[i]; |
| 277 | |
| 278 | /* |
| 279 | * If the user supplies the base address, then |
| 280 | * we init the chip, if not we probe the values |
| 281 | * set by the BIOS |
| 282 | */ |
| 283 | if (io[i] < 0x2000) { |
| 284 | chip->init(chip, &info); |
| 285 | } else |
| 286 | chip->probe(chip, &info); |
| 287 | |
| 288 | if (nsc_ircc_open(&info) >= 0) |
| 289 | ret = 0; |
| 290 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | i++; |
| 292 | } else { |
| 293 | IRDA_DEBUG(2, "%s(), Wrong chip id=0x%02x\n", __FUNCTION__, id); |
| 294 | } |
| 295 | } |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | if (ret) { |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 299 | platform_driver_unregister(&nsc_ircc_driver); |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 300 | pnp_unregister_driver(&nsc_ircc_pnp_driver); |
| 301 | pnp_registered = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | return ret; |
| 305 | } |
| 306 | |
| 307 | /* |
| 308 | * Function nsc_ircc_cleanup () |
| 309 | * |
| 310 | * Close all configured chips |
| 311 | * |
| 312 | */ |
| 313 | static void __exit nsc_ircc_cleanup(void) |
| 314 | { |
| 315 | int i; |
| 316 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 317 | for (i = 0; i < ARRAY_SIZE(dev_self); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | if (dev_self[i]) |
| 319 | nsc_ircc_close(dev_self[i]); |
| 320 | } |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 321 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 322 | platform_driver_unregister(&nsc_ircc_driver); |
| 323 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 324 | if (pnp_registered) |
| 325 | pnp_unregister_driver(&nsc_ircc_pnp_driver); |
| 326 | |
| 327 | pnp_registered = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | } |
| 329 | |
| 330 | /* |
| 331 | * Function nsc_ircc_open (iobase, irq) |
| 332 | * |
| 333 | * Open driver instance |
| 334 | * |
| 335 | */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 336 | static int __init nsc_ircc_open(chipio_t *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | { |
| 338 | struct net_device *dev; |
| 339 | struct nsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | void *ret; |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 341 | int err, chip_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
| 343 | IRDA_DEBUG(2, "%s()\n", __FUNCTION__); |
| 344 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 345 | |
| 346 | for (chip_index = 0; chip_index < ARRAY_SIZE(dev_self); chip_index++) { |
| 347 | if (!dev_self[chip_index]) |
| 348 | break; |
| 349 | } |
| 350 | |
| 351 | if (chip_index == ARRAY_SIZE(dev_self)) { |
| 352 | IRDA_ERROR("%s(), maximum number of supported chips reached!\n", __FUNCTION__); |
| 353 | return -ENOMEM; |
| 354 | } |
| 355 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | IRDA_MESSAGE("%s, Found chip at base=0x%03x\n", driver_name, |
| 357 | info->cfg_base); |
| 358 | |
| 359 | if ((nsc_ircc_setup(info)) == -1) |
| 360 | return -1; |
| 361 | |
| 362 | IRDA_MESSAGE("%s, driver loaded (Dag Brattli)\n", driver_name); |
| 363 | |
| 364 | dev = alloc_irdadev(sizeof(struct nsc_ircc_cb)); |
| 365 | if (dev == NULL) { |
| 366 | IRDA_ERROR("%s(), can't allocate memory for " |
| 367 | "control block!\n", __FUNCTION__); |
| 368 | return -ENOMEM; |
| 369 | } |
| 370 | |
| 371 | self = dev->priv; |
| 372 | self->netdev = dev; |
| 373 | spin_lock_init(&self->lock); |
| 374 | |
| 375 | /* Need to store self somewhere */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 376 | dev_self[chip_index] = self; |
| 377 | self->index = chip_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
| 379 | /* Initialize IO */ |
| 380 | self->io.cfg_base = info->cfg_base; |
| 381 | self->io.fir_base = info->fir_base; |
| 382 | self->io.irq = info->irq; |
| 383 | self->io.fir_ext = CHIP_IO_EXTENT; |
| 384 | self->io.dma = info->dma; |
| 385 | self->io.fifo_size = 32; |
| 386 | |
| 387 | /* Reserve the ioports that we need */ |
| 388 | ret = request_region(self->io.fir_base, self->io.fir_ext, driver_name); |
| 389 | if (!ret) { |
| 390 | IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", |
| 391 | __FUNCTION__, self->io.fir_base); |
| 392 | err = -ENODEV; |
| 393 | goto out1; |
| 394 | } |
| 395 | |
| 396 | /* Initialize QoS for this device */ |
| 397 | irda_init_max_qos_capabilies(&self->qos); |
| 398 | |
| 399 | /* The only value we must override it the baudrate */ |
| 400 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| |
| 401 | IR_115200|IR_576000|IR_1152000 |(IR_4000000 << 8); |
| 402 | |
| 403 | self->qos.min_turn_time.bits = qos_mtt_bits; |
| 404 | irda_qos_bits_to_value(&self->qos); |
| 405 | |
| 406 | /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ |
| 407 | self->rx_buff.truesize = 14384; |
| 408 | self->tx_buff.truesize = 14384; |
| 409 | |
| 410 | /* Allocate memory if needed */ |
| 411 | self->rx_buff.head = |
| 412 | dma_alloc_coherent(NULL, self->rx_buff.truesize, |
| 413 | &self->rx_buff_dma, GFP_KERNEL); |
| 414 | if (self->rx_buff.head == NULL) { |
| 415 | err = -ENOMEM; |
| 416 | goto out2; |
| 417 | |
| 418 | } |
| 419 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); |
| 420 | |
| 421 | self->tx_buff.head = |
| 422 | dma_alloc_coherent(NULL, self->tx_buff.truesize, |
| 423 | &self->tx_buff_dma, GFP_KERNEL); |
| 424 | if (self->tx_buff.head == NULL) { |
| 425 | err = -ENOMEM; |
| 426 | goto out3; |
| 427 | } |
| 428 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); |
| 429 | |
| 430 | self->rx_buff.in_frame = FALSE; |
| 431 | self->rx_buff.state = OUTSIDE_FRAME; |
| 432 | self->tx_buff.data = self->tx_buff.head; |
| 433 | self->rx_buff.data = self->rx_buff.head; |
| 434 | |
| 435 | /* Reset Tx queue info */ |
| 436 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 437 | self->tx_fifo.tail = self->tx_buff.head; |
| 438 | |
| 439 | /* Override the network functions we need to use */ |
| 440 | SET_MODULE_OWNER(dev); |
| 441 | dev->hard_start_xmit = nsc_ircc_hard_xmit_sir; |
| 442 | dev->open = nsc_ircc_net_open; |
| 443 | dev->stop = nsc_ircc_net_close; |
| 444 | dev->do_ioctl = nsc_ircc_net_ioctl; |
| 445 | dev->get_stats = nsc_ircc_net_get_stats; |
| 446 | |
| 447 | err = register_netdev(dev); |
| 448 | if (err) { |
| 449 | IRDA_ERROR("%s(), register_netdev() failed!\n", __FUNCTION__); |
| 450 | goto out4; |
| 451 | } |
| 452 | IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); |
| 453 | |
| 454 | /* Check if user has supplied a valid dongle id or not */ |
| 455 | if ((dongle_id <= 0) || |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 456 | (dongle_id >= ARRAY_SIZE(dongle_types))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | dongle_id = nsc_ircc_read_dongle_id(self->io.fir_base); |
| 458 | |
| 459 | IRDA_MESSAGE("%s, Found dongle: %s\n", driver_name, |
| 460 | dongle_types[dongle_id]); |
| 461 | } else { |
| 462 | IRDA_MESSAGE("%s, Using dongle: %s\n", driver_name, |
| 463 | dongle_types[dongle_id]); |
| 464 | } |
| 465 | |
| 466 | self->io.dongle_id = dongle_id; |
| 467 | nsc_ircc_init_dongle_interface(self->io.fir_base, dongle_id); |
| 468 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 469 | self->pldev = platform_device_register_simple(NSC_IRCC_DRIVER_NAME, |
| 470 | self->index, NULL, 0); |
| 471 | if (IS_ERR(self->pldev)) { |
| 472 | err = PTR_ERR(self->pldev); |
| 473 | goto out5; |
| 474 | } |
| 475 | platform_set_drvdata(self->pldev, self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 477 | return chip_index; |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 478 | |
| 479 | out5: |
| 480 | unregister_netdev(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | out4: |
| 482 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 483 | self->tx_buff.head, self->tx_buff_dma); |
| 484 | out3: |
| 485 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 486 | self->rx_buff.head, self->rx_buff_dma); |
| 487 | out2: |
| 488 | release_region(self->io.fir_base, self->io.fir_ext); |
| 489 | out1: |
| 490 | free_netdev(dev); |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 491 | dev_self[chip_index] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | return err; |
| 493 | } |
| 494 | |
| 495 | /* |
| 496 | * Function nsc_ircc_close (self) |
| 497 | * |
| 498 | * Close driver instance |
| 499 | * |
| 500 | */ |
| 501 | static int __exit nsc_ircc_close(struct nsc_ircc_cb *self) |
| 502 | { |
| 503 | int iobase; |
| 504 | |
| 505 | IRDA_DEBUG(4, "%s()\n", __FUNCTION__); |
| 506 | |
| 507 | IRDA_ASSERT(self != NULL, return -1;); |
| 508 | |
| 509 | iobase = self->io.fir_base; |
| 510 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 511 | platform_device_unregister(self->pldev); |
| 512 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | /* Remove netdevice */ |
| 514 | unregister_netdev(self->netdev); |
| 515 | |
| 516 | /* Release the PORT that this driver is using */ |
| 517 | IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", |
| 518 | __FUNCTION__, self->io.fir_base); |
| 519 | release_region(self->io.fir_base, self->io.fir_ext); |
| 520 | |
| 521 | if (self->tx_buff.head) |
| 522 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 523 | self->tx_buff.head, self->tx_buff_dma); |
| 524 | |
| 525 | if (self->rx_buff.head) |
| 526 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 527 | self->rx_buff.head, self->rx_buff_dma); |
| 528 | |
| 529 | dev_self[self->index] = NULL; |
| 530 | free_netdev(self->netdev); |
| 531 | |
| 532 | return 0; |
| 533 | } |
| 534 | |
| 535 | /* |
| 536 | * Function nsc_ircc_init_108 (iobase, cfg_base, irq, dma) |
| 537 | * |
| 538 | * Initialize the NSC '108 chip |
| 539 | * |
| 540 | */ |
| 541 | static int nsc_ircc_init_108(nsc_chip_t *chip, chipio_t *info) |
| 542 | { |
| 543 | int cfg_base = info->cfg_base; |
| 544 | __u8 temp=0; |
| 545 | |
| 546 | outb(2, cfg_base); /* Mode Control Register (MCTL) */ |
| 547 | outb(0x00, cfg_base+1); /* Disable device */ |
| 548 | |
| 549 | /* Base Address and Interrupt Control Register (BAIC) */ |
| 550 | outb(CFG_108_BAIC, cfg_base); |
| 551 | switch (info->fir_base) { |
| 552 | case 0x3e8: outb(0x14, cfg_base+1); break; |
| 553 | case 0x2e8: outb(0x15, cfg_base+1); break; |
| 554 | case 0x3f8: outb(0x16, cfg_base+1); break; |
| 555 | case 0x2f8: outb(0x17, cfg_base+1); break; |
| 556 | default: IRDA_ERROR("%s(), invalid base_address", __FUNCTION__); |
| 557 | } |
| 558 | |
| 559 | /* Control Signal Routing Register (CSRT) */ |
| 560 | switch (info->irq) { |
| 561 | case 3: temp = 0x01; break; |
| 562 | case 4: temp = 0x02; break; |
| 563 | case 5: temp = 0x03; break; |
| 564 | case 7: temp = 0x04; break; |
| 565 | case 9: temp = 0x05; break; |
| 566 | case 11: temp = 0x06; break; |
| 567 | case 15: temp = 0x07; break; |
| 568 | default: IRDA_ERROR("%s(), invalid irq", __FUNCTION__); |
| 569 | } |
| 570 | outb(CFG_108_CSRT, cfg_base); |
| 571 | |
| 572 | switch (info->dma) { |
| 573 | case 0: outb(0x08+temp, cfg_base+1); break; |
| 574 | case 1: outb(0x10+temp, cfg_base+1); break; |
| 575 | case 3: outb(0x18+temp, cfg_base+1); break; |
| 576 | default: IRDA_ERROR("%s(), invalid dma", __FUNCTION__); |
| 577 | } |
| 578 | |
| 579 | outb(CFG_108_MCTL, cfg_base); /* Mode Control Register (MCTL) */ |
| 580 | outb(0x03, cfg_base+1); /* Enable device */ |
| 581 | |
| 582 | return 0; |
| 583 | } |
| 584 | |
| 585 | /* |
| 586 | * Function nsc_ircc_probe_108 (chip, info) |
| 587 | * |
| 588 | * |
| 589 | * |
| 590 | */ |
| 591 | static int nsc_ircc_probe_108(nsc_chip_t *chip, chipio_t *info) |
| 592 | { |
| 593 | int cfg_base = info->cfg_base; |
| 594 | int reg; |
| 595 | |
| 596 | /* Read address and interrupt control register (BAIC) */ |
| 597 | outb(CFG_108_BAIC, cfg_base); |
| 598 | reg = inb(cfg_base+1); |
| 599 | |
| 600 | switch (reg & 0x03) { |
| 601 | case 0: |
| 602 | info->fir_base = 0x3e8; |
| 603 | break; |
| 604 | case 1: |
| 605 | info->fir_base = 0x2e8; |
| 606 | break; |
| 607 | case 2: |
| 608 | info->fir_base = 0x3f8; |
| 609 | break; |
| 610 | case 3: |
| 611 | info->fir_base = 0x2f8; |
| 612 | break; |
| 613 | } |
| 614 | info->sir_base = info->fir_base; |
| 615 | IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __FUNCTION__, |
| 616 | info->fir_base); |
| 617 | |
| 618 | /* Read control signals routing register (CSRT) */ |
| 619 | outb(CFG_108_CSRT, cfg_base); |
| 620 | reg = inb(cfg_base+1); |
| 621 | |
| 622 | switch (reg & 0x07) { |
| 623 | case 0: |
| 624 | info->irq = -1; |
| 625 | break; |
| 626 | case 1: |
| 627 | info->irq = 3; |
| 628 | break; |
| 629 | case 2: |
| 630 | info->irq = 4; |
| 631 | break; |
| 632 | case 3: |
| 633 | info->irq = 5; |
| 634 | break; |
| 635 | case 4: |
| 636 | info->irq = 7; |
| 637 | break; |
| 638 | case 5: |
| 639 | info->irq = 9; |
| 640 | break; |
| 641 | case 6: |
| 642 | info->irq = 11; |
| 643 | break; |
| 644 | case 7: |
| 645 | info->irq = 15; |
| 646 | break; |
| 647 | } |
| 648 | IRDA_DEBUG(2, "%s(), probing irq=%d\n", __FUNCTION__, info->irq); |
| 649 | |
| 650 | /* Currently we only read Rx DMA but it will also be used for Tx */ |
| 651 | switch ((reg >> 3) & 0x03) { |
| 652 | case 0: |
| 653 | info->dma = -1; |
| 654 | break; |
| 655 | case 1: |
| 656 | info->dma = 0; |
| 657 | break; |
| 658 | case 2: |
| 659 | info->dma = 1; |
| 660 | break; |
| 661 | case 3: |
| 662 | info->dma = 3; |
| 663 | break; |
| 664 | } |
| 665 | IRDA_DEBUG(2, "%s(), probing dma=%d\n", __FUNCTION__, info->dma); |
| 666 | |
| 667 | /* Read mode control register (MCTL) */ |
| 668 | outb(CFG_108_MCTL, cfg_base); |
| 669 | reg = inb(cfg_base+1); |
| 670 | |
| 671 | info->enabled = reg & 0x01; |
| 672 | info->suspended = !((reg >> 1) & 0x01); |
| 673 | |
| 674 | return 0; |
| 675 | } |
| 676 | |
| 677 | /* |
| 678 | * Function nsc_ircc_init_338 (chip, info) |
| 679 | * |
| 680 | * Initialize the NSC '338 chip. Remember that the 87338 needs two |
| 681 | * consecutive writes to the data registers while CPU interrupts are |
| 682 | * disabled. The 97338 does not require this, but shouldn't be any |
| 683 | * harm if we do it anyway. |
| 684 | */ |
| 685 | static int nsc_ircc_init_338(nsc_chip_t *chip, chipio_t *info) |
| 686 | { |
| 687 | /* No init yet */ |
| 688 | |
| 689 | return 0; |
| 690 | } |
| 691 | |
| 692 | /* |
| 693 | * Function nsc_ircc_probe_338 (chip, info) |
| 694 | * |
| 695 | * |
| 696 | * |
| 697 | */ |
| 698 | static int nsc_ircc_probe_338(nsc_chip_t *chip, chipio_t *info) |
| 699 | { |
| 700 | int cfg_base = info->cfg_base; |
| 701 | int reg, com = 0; |
| 702 | int pnp; |
| 703 | |
| 704 | /* Read funtion enable register (FER) */ |
| 705 | outb(CFG_338_FER, cfg_base); |
| 706 | reg = inb(cfg_base+1); |
| 707 | |
| 708 | info->enabled = (reg >> 2) & 0x01; |
| 709 | |
| 710 | /* Check if we are in Legacy or PnP mode */ |
| 711 | outb(CFG_338_PNP0, cfg_base); |
| 712 | reg = inb(cfg_base+1); |
| 713 | |
| 714 | pnp = (reg >> 3) & 0x01; |
| 715 | if (pnp) { |
| 716 | IRDA_DEBUG(2, "(), Chip is in PnP mode\n"); |
| 717 | outb(0x46, cfg_base); |
| 718 | reg = (inb(cfg_base+1) & 0xfe) << 2; |
| 719 | |
| 720 | outb(0x47, cfg_base); |
| 721 | reg |= ((inb(cfg_base+1) & 0xfc) << 8); |
| 722 | |
| 723 | info->fir_base = reg; |
| 724 | } else { |
| 725 | /* Read function address register (FAR) */ |
| 726 | outb(CFG_338_FAR, cfg_base); |
| 727 | reg = inb(cfg_base+1); |
| 728 | |
| 729 | switch ((reg >> 4) & 0x03) { |
| 730 | case 0: |
| 731 | info->fir_base = 0x3f8; |
| 732 | break; |
| 733 | case 1: |
| 734 | info->fir_base = 0x2f8; |
| 735 | break; |
| 736 | case 2: |
| 737 | com = 3; |
| 738 | break; |
| 739 | case 3: |
| 740 | com = 4; |
| 741 | break; |
| 742 | } |
| 743 | |
| 744 | if (com) { |
| 745 | switch ((reg >> 6) & 0x03) { |
| 746 | case 0: |
| 747 | if (com == 3) |
| 748 | info->fir_base = 0x3e8; |
| 749 | else |
| 750 | info->fir_base = 0x2e8; |
| 751 | break; |
| 752 | case 1: |
| 753 | if (com == 3) |
| 754 | info->fir_base = 0x338; |
| 755 | else |
| 756 | info->fir_base = 0x238; |
| 757 | break; |
| 758 | case 2: |
| 759 | if (com == 3) |
| 760 | info->fir_base = 0x2e8; |
| 761 | else |
| 762 | info->fir_base = 0x2e0; |
| 763 | break; |
| 764 | case 3: |
| 765 | if (com == 3) |
| 766 | info->fir_base = 0x220; |
| 767 | else |
| 768 | info->fir_base = 0x228; |
| 769 | break; |
| 770 | } |
| 771 | } |
| 772 | } |
| 773 | info->sir_base = info->fir_base; |
| 774 | |
| 775 | /* Read PnP register 1 (PNP1) */ |
| 776 | outb(CFG_338_PNP1, cfg_base); |
| 777 | reg = inb(cfg_base+1); |
| 778 | |
| 779 | info->irq = reg >> 4; |
| 780 | |
| 781 | /* Read PnP register 3 (PNP3) */ |
| 782 | outb(CFG_338_PNP3, cfg_base); |
| 783 | reg = inb(cfg_base+1); |
| 784 | |
| 785 | info->dma = (reg & 0x07) - 1; |
| 786 | |
| 787 | /* Read power and test register (PTR) */ |
| 788 | outb(CFG_338_PTR, cfg_base); |
| 789 | reg = inb(cfg_base+1); |
| 790 | |
| 791 | info->suspended = reg & 0x01; |
| 792 | |
| 793 | return 0; |
| 794 | } |
| 795 | |
| 796 | |
| 797 | /* |
| 798 | * Function nsc_ircc_init_39x (chip, info) |
| 799 | * |
| 800 | * Now that we know it's a '39x (see probe below), we need to |
| 801 | * configure it so we can use it. |
| 802 | * |
| 803 | * The NSC '338 chip is a Super I/O chip with a "bank" architecture, |
| 804 | * the configuration of the different functionality (serial, parallel, |
| 805 | * floppy...) are each in a different bank (Logical Device Number). |
| 806 | * The base address, irq and dma configuration registers are common |
| 807 | * to all functionalities (index 0x30 to 0x7F). |
| 808 | * There is only one configuration register specific to the |
| 809 | * serial port, CFG_39X_SPC. |
| 810 | * JeanII |
| 811 | * |
| 812 | * Note : this code was written by Jan Frey <janfrey@web.de> |
| 813 | */ |
| 814 | static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info) |
| 815 | { |
| 816 | int cfg_base = info->cfg_base; |
| 817 | int enabled; |
| 818 | |
Alexey Dobriyan | 7f927fc | 2006-03-28 01:56:53 -0800 | [diff] [blame] | 819 | /* User is sure about his config... accept it. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | IRDA_DEBUG(2, "%s(): nsc_ircc_init_39x (user settings): " |
| 821 | "io=0x%04x, irq=%d, dma=%d\n", |
| 822 | __FUNCTION__, info->fir_base, info->irq, info->dma); |
| 823 | |
| 824 | /* Access bank for SP2 */ |
| 825 | outb(CFG_39X_LDN, cfg_base); |
| 826 | outb(0x02, cfg_base+1); |
| 827 | |
| 828 | /* Configure SP2 */ |
| 829 | |
| 830 | /* We want to enable the device if not enabled */ |
| 831 | outb(CFG_39X_ACT, cfg_base); |
| 832 | enabled = inb(cfg_base+1) & 0x01; |
| 833 | |
| 834 | if (!enabled) { |
| 835 | /* Enable the device */ |
| 836 | outb(CFG_39X_SIOCF1, cfg_base); |
| 837 | outb(0x01, cfg_base+1); |
| 838 | /* May want to update info->enabled. Jean II */ |
| 839 | } |
| 840 | |
| 841 | /* Enable UART bank switching (bit 7) ; Sets the chip to normal |
| 842 | * power mode (wake up from sleep mode) (bit 1) */ |
| 843 | outb(CFG_39X_SPC, cfg_base); |
| 844 | outb(0x82, cfg_base+1); |
| 845 | |
| 846 | return 0; |
| 847 | } |
| 848 | |
| 849 | /* |
| 850 | * Function nsc_ircc_probe_39x (chip, info) |
| 851 | * |
| 852 | * Test if we really have a '39x chip at the given address |
| 853 | * |
| 854 | * Note : this code was written by Jan Frey <janfrey@web.de> |
| 855 | */ |
| 856 | static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info) |
| 857 | { |
| 858 | int cfg_base = info->cfg_base; |
| 859 | int reg1, reg2, irq, irqt, dma1, dma2; |
| 860 | int enabled, susp; |
| 861 | |
| 862 | IRDA_DEBUG(2, "%s(), nsc_ircc_probe_39x, base=%d\n", |
| 863 | __FUNCTION__, cfg_base); |
| 864 | |
| 865 | /* This function should be executed with irq off to avoid |
| 866 | * another driver messing with the Super I/O bank - Jean II */ |
| 867 | |
| 868 | /* Access bank for SP2 */ |
| 869 | outb(CFG_39X_LDN, cfg_base); |
| 870 | outb(0x02, cfg_base+1); |
| 871 | |
| 872 | /* Read infos about SP2 ; store in info struct */ |
| 873 | outb(CFG_39X_BASEH, cfg_base); |
| 874 | reg1 = inb(cfg_base+1); |
| 875 | outb(CFG_39X_BASEL, cfg_base); |
| 876 | reg2 = inb(cfg_base+1); |
| 877 | info->fir_base = (reg1 << 8) | reg2; |
| 878 | |
| 879 | outb(CFG_39X_IRQNUM, cfg_base); |
| 880 | irq = inb(cfg_base+1); |
| 881 | outb(CFG_39X_IRQSEL, cfg_base); |
| 882 | irqt = inb(cfg_base+1); |
| 883 | info->irq = irq; |
| 884 | |
| 885 | outb(CFG_39X_DMA0, cfg_base); |
| 886 | dma1 = inb(cfg_base+1); |
| 887 | outb(CFG_39X_DMA1, cfg_base); |
| 888 | dma2 = inb(cfg_base+1); |
| 889 | info->dma = dma1 -1; |
| 890 | |
| 891 | outb(CFG_39X_ACT, cfg_base); |
| 892 | info->enabled = enabled = inb(cfg_base+1) & 0x01; |
| 893 | |
| 894 | outb(CFG_39X_SPC, cfg_base); |
| 895 | susp = 1 - ((inb(cfg_base+1) & 0x02) >> 1); |
| 896 | |
| 897 | IRDA_DEBUG(2, "%s(): io=0x%02x%02x, irq=%d (type %d), rxdma=%d, txdma=%d, enabled=%d (suspended=%d)\n", __FUNCTION__, reg1,reg2,irq,irqt,dma1,dma2,enabled,susp); |
| 898 | |
| 899 | /* Configure SP2 */ |
| 900 | |
| 901 | /* We want to enable the device if not enabled */ |
| 902 | outb(CFG_39X_ACT, cfg_base); |
| 903 | enabled = inb(cfg_base+1) & 0x01; |
| 904 | |
| 905 | if (!enabled) { |
| 906 | /* Enable the device */ |
| 907 | outb(CFG_39X_SIOCF1, cfg_base); |
| 908 | outb(0x01, cfg_base+1); |
| 909 | /* May want to update info->enabled. Jean II */ |
| 910 | } |
| 911 | |
| 912 | /* Enable UART bank switching (bit 7) ; Sets the chip to normal |
| 913 | * power mode (wake up from sleep mode) (bit 1) */ |
| 914 | outb(CFG_39X_SPC, cfg_base); |
| 915 | outb(0x82, cfg_base+1); |
| 916 | |
| 917 | return 0; |
| 918 | } |
| 919 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 920 | /* PNP probing */ |
| 921 | static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id) |
| 922 | { |
| 923 | memset(&pnp_info, 0, sizeof(chipio_t)); |
| 924 | pnp_info.irq = -1; |
| 925 | pnp_info.dma = -1; |
| 926 | pnp_succeeded = 1; |
| 927 | |
| 928 | /* There don't seem to be any way to get the cfg_base. |
| 929 | * On my box, cfg_base is in the PnP descriptor of the |
| 930 | * motherboard. Oh well... Jean II */ |
| 931 | |
| 932 | if (pnp_port_valid(dev, 0) && |
| 933 | !(pnp_port_flags(dev, 0) & IORESOURCE_DISABLED)) |
| 934 | pnp_info.fir_base = pnp_port_start(dev, 0); |
| 935 | |
| 936 | if (pnp_irq_valid(dev, 0) && |
| 937 | !(pnp_irq_flags(dev, 0) & IORESOURCE_DISABLED)) |
| 938 | pnp_info.irq = pnp_irq(dev, 0); |
| 939 | |
| 940 | if (pnp_dma_valid(dev, 0) && |
| 941 | !(pnp_dma_flags(dev, 0) & IORESOURCE_DISABLED)) |
| 942 | pnp_info.dma = pnp_dma(dev, 0); |
| 943 | |
| 944 | IRDA_DEBUG(0, "%s() : From PnP, found firbase 0x%03X ; irq %d ; dma %d.\n", |
| 945 | __FUNCTION__, pnp_info.fir_base, pnp_info.irq, pnp_info.dma); |
| 946 | |
| 947 | if((pnp_info.fir_base == 0) || |
| 948 | (pnp_info.irq == -1) || (pnp_info.dma == -1)) { |
| 949 | /* Returning an error will disable the device. Yuck ! */ |
| 950 | //return -EINVAL; |
| 951 | pnp_succeeded = 0; |
| 952 | } |
| 953 | |
| 954 | return 0; |
| 955 | } |
| 956 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | /* |
| 958 | * Function nsc_ircc_setup (info) |
| 959 | * |
| 960 | * Returns non-negative on success. |
| 961 | * |
| 962 | */ |
| 963 | static int nsc_ircc_setup(chipio_t *info) |
| 964 | { |
| 965 | int version; |
| 966 | int iobase = info->fir_base; |
| 967 | |
| 968 | /* Read the Module ID */ |
| 969 | switch_bank(iobase, BANK3); |
| 970 | version = inb(iobase+MID); |
| 971 | |
| 972 | IRDA_DEBUG(2, "%s() Driver %s Found chip version %02x\n", |
| 973 | __FUNCTION__, driver_name, version); |
| 974 | |
| 975 | /* Should be 0x2? */ |
| 976 | if (0x20 != (version & 0xf0)) { |
| 977 | IRDA_ERROR("%s, Wrong chip version %02x\n", |
| 978 | driver_name, version); |
| 979 | return -1; |
| 980 | } |
| 981 | |
| 982 | /* Switch to advanced mode */ |
| 983 | switch_bank(iobase, BANK2); |
| 984 | outb(ECR1_EXT_SL, iobase+ECR1); |
| 985 | switch_bank(iobase, BANK0); |
| 986 | |
| 987 | /* Set FIFO threshold to TX17, RX16, reset and enable FIFO's */ |
| 988 | switch_bank(iobase, BANK0); |
| 989 | outb(FCR_RXTH|FCR_TXTH|FCR_TXSR|FCR_RXSR|FCR_FIFO_EN, iobase+FCR); |
| 990 | |
| 991 | outb(0x03, iobase+LCR); /* 8 bit word length */ |
| 992 | outb(MCR_SIR, iobase+MCR); /* Start at SIR-mode, also clears LSR*/ |
| 993 | |
| 994 | /* Set FIFO size to 32 */ |
| 995 | switch_bank(iobase, BANK2); |
| 996 | outb(EXCR2_RFSIZ|EXCR2_TFSIZ, iobase+EXCR2); |
| 997 | |
| 998 | /* IRCR2: FEND_MD is not set */ |
| 999 | switch_bank(iobase, BANK5); |
| 1000 | outb(0x02, iobase+4); |
| 1001 | |
| 1002 | /* Make sure that some defaults are OK */ |
| 1003 | switch_bank(iobase, BANK6); |
| 1004 | outb(0x20, iobase+0); /* Set 32 bits FIR CRC */ |
| 1005 | outb(0x0a, iobase+1); /* Set MIR pulse width */ |
| 1006 | outb(0x0d, iobase+2); /* Set SIR pulse width to 1.6us */ |
| 1007 | outb(0x2a, iobase+4); /* Set beginning frag, and preamble length */ |
| 1008 | |
| 1009 | /* Enable receive interrupts */ |
| 1010 | switch_bank(iobase, BANK0); |
| 1011 | outb(IER_RXHDL_IE, iobase+IER); |
| 1012 | |
| 1013 | return 0; |
| 1014 | } |
| 1015 | |
| 1016 | /* |
| 1017 | * Function nsc_ircc_read_dongle_id (void) |
| 1018 | * |
| 1019 | * Try to read dongle indentification. This procedure needs to be executed |
| 1020 | * once after power-on/reset. It also needs to be used whenever you suspect |
| 1021 | * that the user may have plugged/unplugged the IrDA Dongle. |
| 1022 | */ |
| 1023 | static int nsc_ircc_read_dongle_id (int iobase) |
| 1024 | { |
| 1025 | int dongle_id; |
| 1026 | __u8 bank; |
| 1027 | |
| 1028 | bank = inb(iobase+BSR); |
| 1029 | |
| 1030 | /* Select Bank 7 */ |
| 1031 | switch_bank(iobase, BANK7); |
| 1032 | |
| 1033 | /* IRCFG4: IRSL0_DS and IRSL21_DS are cleared */ |
| 1034 | outb(0x00, iobase+7); |
| 1035 | |
| 1036 | /* ID0, 1, and 2 are pulled up/down very slowly */ |
| 1037 | udelay(50); |
| 1038 | |
| 1039 | /* IRCFG1: read the ID bits */ |
| 1040 | dongle_id = inb(iobase+4) & 0x0f; |
| 1041 | |
| 1042 | #ifdef BROKEN_DONGLE_ID |
| 1043 | if (dongle_id == 0x0a) |
| 1044 | dongle_id = 0x09; |
| 1045 | #endif |
| 1046 | /* Go back to bank 0 before returning */ |
| 1047 | switch_bank(iobase, BANK0); |
| 1048 | |
| 1049 | outb(bank, iobase+BSR); |
| 1050 | |
| 1051 | return dongle_id; |
| 1052 | } |
| 1053 | |
| 1054 | /* |
| 1055 | * Function nsc_ircc_init_dongle_interface (iobase, dongle_id) |
| 1056 | * |
| 1057 | * This function initializes the dongle for the transceiver that is |
| 1058 | * used. This procedure needs to be executed once after |
| 1059 | * power-on/reset. It also needs to be used whenever you suspect that |
| 1060 | * the dongle is changed. |
| 1061 | */ |
| 1062 | static void nsc_ircc_init_dongle_interface (int iobase, int dongle_id) |
| 1063 | { |
| 1064 | int bank; |
| 1065 | |
| 1066 | /* Save current bank */ |
| 1067 | bank = inb(iobase+BSR); |
| 1068 | |
| 1069 | /* Select Bank 7 */ |
| 1070 | switch_bank(iobase, BANK7); |
| 1071 | |
| 1072 | /* IRCFG4: set according to dongle_id */ |
| 1073 | switch (dongle_id) { |
| 1074 | case 0x00: /* same as */ |
| 1075 | case 0x01: /* Differential serial interface */ |
| 1076 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1077 | __FUNCTION__, dongle_types[dongle_id]); |
| 1078 | break; |
| 1079 | case 0x02: /* same as */ |
| 1080 | case 0x03: /* Reserved */ |
| 1081 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1082 | __FUNCTION__, dongle_types[dongle_id]); |
| 1083 | break; |
| 1084 | case 0x04: /* Sharp RY5HD01 */ |
| 1085 | break; |
| 1086 | case 0x05: /* Reserved, but this is what the Thinkpad reports */ |
| 1087 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1088 | __FUNCTION__, dongle_types[dongle_id]); |
| 1089 | break; |
| 1090 | case 0x06: /* Single-ended serial interface */ |
| 1091 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1092 | __FUNCTION__, dongle_types[dongle_id]); |
| 1093 | break; |
| 1094 | case 0x07: /* Consumer-IR only */ |
| 1095 | IRDA_DEBUG(0, "%s(), %s is not for IrDA mode\n", |
| 1096 | __FUNCTION__, dongle_types[dongle_id]); |
| 1097 | break; |
| 1098 | case 0x08: /* HP HSDL-2300, HP HSDL-3600/HSDL-3610 */ |
| 1099 | IRDA_DEBUG(0, "%s(), %s\n", |
| 1100 | __FUNCTION__, dongle_types[dongle_id]); |
| 1101 | break; |
| 1102 | case 0x09: /* IBM31T1100 or Temic TFDS6000/TFDS6500 */ |
| 1103 | outb(0x28, iobase+7); /* Set irsl[0-2] as output */ |
| 1104 | break; |
| 1105 | case 0x0A: /* same as */ |
| 1106 | case 0x0B: /* Reserved */ |
| 1107 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1108 | __FUNCTION__, dongle_types[dongle_id]); |
| 1109 | break; |
| 1110 | case 0x0C: /* same as */ |
| 1111 | case 0x0D: /* HP HSDL-1100/HSDL-2100 */ |
| 1112 | /* |
| 1113 | * Set irsl0 as input, irsl[1-2] as output, and separate |
| 1114 | * inputs are used for SIR and MIR/FIR |
| 1115 | */ |
| 1116 | outb(0x48, iobase+7); |
| 1117 | break; |
| 1118 | case 0x0E: /* Supports SIR Mode only */ |
| 1119 | outb(0x28, iobase+7); /* Set irsl[0-2] as output */ |
| 1120 | break; |
| 1121 | case 0x0F: /* No dongle connected */ |
| 1122 | IRDA_DEBUG(0, "%s(), %s\n", |
| 1123 | __FUNCTION__, dongle_types[dongle_id]); |
| 1124 | |
| 1125 | switch_bank(iobase, BANK0); |
| 1126 | outb(0x62, iobase+MCR); |
| 1127 | break; |
| 1128 | default: |
| 1129 | IRDA_DEBUG(0, "%s(), invalid dongle_id %#x", |
| 1130 | __FUNCTION__, dongle_id); |
| 1131 | } |
| 1132 | |
| 1133 | /* IRCFG1: IRSL1 and 2 are set to IrDA mode */ |
| 1134 | outb(0x00, iobase+4); |
| 1135 | |
| 1136 | /* Restore bank register */ |
| 1137 | outb(bank, iobase+BSR); |
| 1138 | |
| 1139 | } /* set_up_dongle_interface */ |
| 1140 | |
| 1141 | /* |
| 1142 | * Function nsc_ircc_change_dongle_speed (iobase, speed, dongle_id) |
| 1143 | * |
| 1144 | * Change speed of the attach dongle |
| 1145 | * |
| 1146 | */ |
| 1147 | static void nsc_ircc_change_dongle_speed(int iobase, int speed, int dongle_id) |
| 1148 | { |
| 1149 | __u8 bank; |
| 1150 | |
| 1151 | /* Save current bank */ |
| 1152 | bank = inb(iobase+BSR); |
| 1153 | |
| 1154 | /* Select Bank 7 */ |
| 1155 | switch_bank(iobase, BANK7); |
| 1156 | |
| 1157 | /* IRCFG1: set according to dongle_id */ |
| 1158 | switch (dongle_id) { |
| 1159 | case 0x00: /* same as */ |
| 1160 | case 0x01: /* Differential serial interface */ |
| 1161 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1162 | __FUNCTION__, dongle_types[dongle_id]); |
| 1163 | break; |
| 1164 | case 0x02: /* same as */ |
| 1165 | case 0x03: /* Reserved */ |
| 1166 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1167 | __FUNCTION__, dongle_types[dongle_id]); |
| 1168 | break; |
| 1169 | case 0x04: /* Sharp RY5HD01 */ |
| 1170 | break; |
| 1171 | case 0x05: /* Reserved */ |
| 1172 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1173 | __FUNCTION__, dongle_types[dongle_id]); |
| 1174 | break; |
| 1175 | case 0x06: /* Single-ended serial interface */ |
| 1176 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1177 | __FUNCTION__, dongle_types[dongle_id]); |
| 1178 | break; |
| 1179 | case 0x07: /* Consumer-IR only */ |
| 1180 | IRDA_DEBUG(0, "%s(), %s is not for IrDA mode\n", |
| 1181 | __FUNCTION__, dongle_types[dongle_id]); |
| 1182 | break; |
| 1183 | case 0x08: /* HP HSDL-2300, HP HSDL-3600/HSDL-3610 */ |
| 1184 | IRDA_DEBUG(0, "%s(), %s\n", |
| 1185 | __FUNCTION__, dongle_types[dongle_id]); |
| 1186 | outb(0x00, iobase+4); |
| 1187 | if (speed > 115200) |
| 1188 | outb(0x01, iobase+4); |
| 1189 | break; |
| 1190 | case 0x09: /* IBM31T1100 or Temic TFDS6000/TFDS6500 */ |
| 1191 | outb(0x01, iobase+4); |
| 1192 | |
| 1193 | if (speed == 4000000) { |
| 1194 | /* There was a cli() there, but we now are already |
| 1195 | * under spin_lock_irqsave() - JeanII */ |
| 1196 | outb(0x81, iobase+4); |
| 1197 | outb(0x80, iobase+4); |
| 1198 | } else |
| 1199 | outb(0x00, iobase+4); |
| 1200 | break; |
| 1201 | case 0x0A: /* same as */ |
| 1202 | case 0x0B: /* Reserved */ |
| 1203 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
| 1204 | __FUNCTION__, dongle_types[dongle_id]); |
| 1205 | break; |
| 1206 | case 0x0C: /* same as */ |
| 1207 | case 0x0D: /* HP HSDL-1100/HSDL-2100 */ |
| 1208 | break; |
| 1209 | case 0x0E: /* Supports SIR Mode only */ |
| 1210 | break; |
| 1211 | case 0x0F: /* No dongle connected */ |
| 1212 | IRDA_DEBUG(0, "%s(), %s is not for IrDA mode\n", |
| 1213 | __FUNCTION__, dongle_types[dongle_id]); |
| 1214 | |
| 1215 | switch_bank(iobase, BANK0); |
| 1216 | outb(0x62, iobase+MCR); |
| 1217 | break; |
| 1218 | default: |
| 1219 | IRDA_DEBUG(0, "%s(), invalid data_rate\n", __FUNCTION__); |
| 1220 | } |
| 1221 | /* Restore bank register */ |
| 1222 | outb(bank, iobase+BSR); |
| 1223 | } |
| 1224 | |
| 1225 | /* |
| 1226 | * Function nsc_ircc_change_speed (self, baud) |
| 1227 | * |
| 1228 | * Change the speed of the device |
| 1229 | * |
| 1230 | * This function *must* be called with irq off and spin-lock. |
| 1231 | */ |
| 1232 | static __u8 nsc_ircc_change_speed(struct nsc_ircc_cb *self, __u32 speed) |
| 1233 | { |
| 1234 | struct net_device *dev = self->netdev; |
| 1235 | __u8 mcr = MCR_SIR; |
| 1236 | int iobase; |
| 1237 | __u8 bank; |
| 1238 | __u8 ier; /* Interrupt enable register */ |
| 1239 | |
| 1240 | IRDA_DEBUG(2, "%s(), speed=%d\n", __FUNCTION__, speed); |
| 1241 | |
| 1242 | IRDA_ASSERT(self != NULL, return 0;); |
| 1243 | |
| 1244 | iobase = self->io.fir_base; |
| 1245 | |
| 1246 | /* Update accounting for new speed */ |
| 1247 | self->io.speed = speed; |
| 1248 | |
| 1249 | /* Save current bank */ |
| 1250 | bank = inb(iobase+BSR); |
| 1251 | |
| 1252 | /* Disable interrupts */ |
| 1253 | switch_bank(iobase, BANK0); |
| 1254 | outb(0, iobase+IER); |
| 1255 | |
| 1256 | /* Select Bank 2 */ |
| 1257 | switch_bank(iobase, BANK2); |
| 1258 | |
| 1259 | outb(0x00, iobase+BGDH); |
| 1260 | switch (speed) { |
| 1261 | case 9600: outb(0x0c, iobase+BGDL); break; |
| 1262 | case 19200: outb(0x06, iobase+BGDL); break; |
| 1263 | case 38400: outb(0x03, iobase+BGDL); break; |
| 1264 | case 57600: outb(0x02, iobase+BGDL); break; |
| 1265 | case 115200: outb(0x01, iobase+BGDL); break; |
| 1266 | case 576000: |
| 1267 | switch_bank(iobase, BANK5); |
| 1268 | |
| 1269 | /* IRCR2: MDRS is set */ |
| 1270 | outb(inb(iobase+4) | 0x04, iobase+4); |
| 1271 | |
| 1272 | mcr = MCR_MIR; |
| 1273 | IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __FUNCTION__); |
| 1274 | break; |
| 1275 | case 1152000: |
| 1276 | mcr = MCR_MIR; |
| 1277 | IRDA_DEBUG(0, "%s(), handling baud of 1152000\n", __FUNCTION__); |
| 1278 | break; |
| 1279 | case 4000000: |
| 1280 | mcr = MCR_FIR; |
| 1281 | IRDA_DEBUG(0, "%s(), handling baud of 4000000\n", __FUNCTION__); |
| 1282 | break; |
| 1283 | default: |
| 1284 | mcr = MCR_FIR; |
| 1285 | IRDA_DEBUG(0, "%s(), unknown baud rate of %d\n", |
| 1286 | __FUNCTION__, speed); |
| 1287 | break; |
| 1288 | } |
| 1289 | |
| 1290 | /* Set appropriate speed mode */ |
| 1291 | switch_bank(iobase, BANK0); |
| 1292 | outb(mcr | MCR_TX_DFR, iobase+MCR); |
| 1293 | |
| 1294 | /* Give some hits to the transceiver */ |
| 1295 | nsc_ircc_change_dongle_speed(iobase, speed, self->io.dongle_id); |
| 1296 | |
| 1297 | /* Set FIFO threshold to TX17, RX16 */ |
| 1298 | switch_bank(iobase, BANK0); |
| 1299 | outb(0x00, iobase+FCR); |
| 1300 | outb(FCR_FIFO_EN, iobase+FCR); |
| 1301 | outb(FCR_RXTH| /* Set Rx FIFO threshold */ |
| 1302 | FCR_TXTH| /* Set Tx FIFO threshold */ |
| 1303 | FCR_TXSR| /* Reset Tx FIFO */ |
| 1304 | FCR_RXSR| /* Reset Rx FIFO */ |
| 1305 | FCR_FIFO_EN, /* Enable FIFOs */ |
| 1306 | iobase+FCR); |
| 1307 | |
| 1308 | /* Set FIFO size to 32 */ |
| 1309 | switch_bank(iobase, BANK2); |
| 1310 | outb(EXCR2_RFSIZ|EXCR2_TFSIZ, iobase+EXCR2); |
| 1311 | |
| 1312 | /* Enable some interrupts so we can receive frames */ |
| 1313 | switch_bank(iobase, BANK0); |
| 1314 | if (speed > 115200) { |
| 1315 | /* Install FIR xmit handler */ |
| 1316 | dev->hard_start_xmit = nsc_ircc_hard_xmit_fir; |
| 1317 | ier = IER_SFIF_IE; |
| 1318 | nsc_ircc_dma_receive(self); |
| 1319 | } else { |
| 1320 | /* Install SIR xmit handler */ |
| 1321 | dev->hard_start_xmit = nsc_ircc_hard_xmit_sir; |
| 1322 | ier = IER_RXHDL_IE; |
| 1323 | } |
| 1324 | /* Set our current interrupt mask */ |
| 1325 | outb(ier, iobase+IER); |
| 1326 | |
| 1327 | /* Restore BSR */ |
| 1328 | outb(bank, iobase+BSR); |
| 1329 | |
| 1330 | /* Make sure interrupt handlers keep the proper interrupt mask */ |
| 1331 | return(ier); |
| 1332 | } |
| 1333 | |
| 1334 | /* |
| 1335 | * Function nsc_ircc_hard_xmit (skb, dev) |
| 1336 | * |
| 1337 | * Transmit the frame! |
| 1338 | * |
| 1339 | */ |
| 1340 | static int nsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev) |
| 1341 | { |
| 1342 | struct nsc_ircc_cb *self; |
| 1343 | unsigned long flags; |
| 1344 | int iobase; |
| 1345 | __s32 speed; |
| 1346 | __u8 bank; |
| 1347 | |
| 1348 | self = (struct nsc_ircc_cb *) dev->priv; |
| 1349 | |
| 1350 | IRDA_ASSERT(self != NULL, return 0;); |
| 1351 | |
| 1352 | iobase = self->io.fir_base; |
| 1353 | |
| 1354 | netif_stop_queue(dev); |
| 1355 | |
| 1356 | /* Make sure tests *& speed change are atomic */ |
| 1357 | spin_lock_irqsave(&self->lock, flags); |
| 1358 | |
| 1359 | /* Check if we need to change the speed */ |
| 1360 | speed = irda_get_next_speed(skb); |
| 1361 | if ((speed != self->io.speed) && (speed != -1)) { |
| 1362 | /* Check for empty frame. */ |
| 1363 | if (!skb->len) { |
| 1364 | /* If we just sent a frame, we get called before |
| 1365 | * the last bytes get out (because of the SIR FIFO). |
| 1366 | * If this is the case, let interrupt handler change |
| 1367 | * the speed itself... Jean II */ |
| 1368 | if (self->io.direction == IO_RECV) { |
| 1369 | nsc_ircc_change_speed(self, speed); |
| 1370 | /* TODO : For SIR->SIR, the next packet |
| 1371 | * may get corrupted - Jean II */ |
| 1372 | netif_wake_queue(dev); |
| 1373 | } else { |
| 1374 | self->new_speed = speed; |
| 1375 | /* Queue will be restarted after speed change |
| 1376 | * to make sure packets gets through the |
| 1377 | * proper xmit handler - Jean II */ |
| 1378 | } |
| 1379 | dev->trans_start = jiffies; |
| 1380 | spin_unlock_irqrestore(&self->lock, flags); |
| 1381 | dev_kfree_skb(skb); |
| 1382 | return 0; |
| 1383 | } else |
| 1384 | self->new_speed = speed; |
| 1385 | } |
| 1386 | |
| 1387 | /* Save current bank */ |
| 1388 | bank = inb(iobase+BSR); |
| 1389 | |
| 1390 | self->tx_buff.data = self->tx_buff.head; |
| 1391 | |
| 1392 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, |
| 1393 | self->tx_buff.truesize); |
| 1394 | |
| 1395 | self->stats.tx_bytes += self->tx_buff.len; |
| 1396 | |
| 1397 | /* Add interrupt on tx low level (will fire immediately) */ |
| 1398 | switch_bank(iobase, BANK0); |
| 1399 | outb(IER_TXLDL_IE, iobase+IER); |
| 1400 | |
| 1401 | /* Restore bank register */ |
| 1402 | outb(bank, iobase+BSR); |
| 1403 | |
| 1404 | dev->trans_start = jiffies; |
| 1405 | spin_unlock_irqrestore(&self->lock, flags); |
| 1406 | |
| 1407 | dev_kfree_skb(skb); |
| 1408 | |
| 1409 | return 0; |
| 1410 | } |
| 1411 | |
| 1412 | static int nsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev) |
| 1413 | { |
| 1414 | struct nsc_ircc_cb *self; |
| 1415 | unsigned long flags; |
| 1416 | int iobase; |
| 1417 | __s32 speed; |
| 1418 | __u8 bank; |
| 1419 | int mtt, diff; |
| 1420 | |
| 1421 | self = (struct nsc_ircc_cb *) dev->priv; |
| 1422 | iobase = self->io.fir_base; |
| 1423 | |
| 1424 | netif_stop_queue(dev); |
| 1425 | |
| 1426 | /* Make sure tests *& speed change are atomic */ |
| 1427 | spin_lock_irqsave(&self->lock, flags); |
| 1428 | |
| 1429 | /* Check if we need to change the speed */ |
| 1430 | speed = irda_get_next_speed(skb); |
| 1431 | if ((speed != self->io.speed) && (speed != -1)) { |
| 1432 | /* Check for empty frame. */ |
| 1433 | if (!skb->len) { |
| 1434 | /* If we are currently transmitting, defer to |
| 1435 | * interrupt handler. - Jean II */ |
| 1436 | if(self->tx_fifo.len == 0) { |
| 1437 | nsc_ircc_change_speed(self, speed); |
| 1438 | netif_wake_queue(dev); |
| 1439 | } else { |
| 1440 | self->new_speed = speed; |
| 1441 | /* Keep queue stopped : |
| 1442 | * the speed change operation may change the |
| 1443 | * xmit handler, and we want to make sure |
| 1444 | * the next packet get through the proper |
| 1445 | * Tx path, so block the Tx queue until |
| 1446 | * the speed change has been done. |
| 1447 | * Jean II */ |
| 1448 | } |
| 1449 | dev->trans_start = jiffies; |
| 1450 | spin_unlock_irqrestore(&self->lock, flags); |
| 1451 | dev_kfree_skb(skb); |
| 1452 | return 0; |
| 1453 | } else { |
| 1454 | /* Change speed after current frame */ |
| 1455 | self->new_speed = speed; |
| 1456 | } |
| 1457 | } |
| 1458 | |
| 1459 | /* Save current bank */ |
| 1460 | bank = inb(iobase+BSR); |
| 1461 | |
| 1462 | /* Register and copy this frame to DMA memory */ |
| 1463 | self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail; |
| 1464 | self->tx_fifo.queue[self->tx_fifo.free].len = skb->len; |
| 1465 | self->tx_fifo.tail += skb->len; |
| 1466 | |
| 1467 | self->stats.tx_bytes += skb->len; |
| 1468 | |
| 1469 | memcpy(self->tx_fifo.queue[self->tx_fifo.free].start, skb->data, |
| 1470 | skb->len); |
| 1471 | |
| 1472 | self->tx_fifo.len++; |
| 1473 | self->tx_fifo.free++; |
| 1474 | |
| 1475 | /* Start transmit only if there is currently no transmit going on */ |
| 1476 | if (self->tx_fifo.len == 1) { |
| 1477 | /* Check if we must wait the min turn time or not */ |
| 1478 | mtt = irda_get_mtt(skb); |
| 1479 | if (mtt) { |
| 1480 | /* Check how much time we have used already */ |
| 1481 | do_gettimeofday(&self->now); |
| 1482 | diff = self->now.tv_usec - self->stamp.tv_usec; |
| 1483 | if (diff < 0) |
| 1484 | diff += 1000000; |
| 1485 | |
| 1486 | /* Check if the mtt is larger than the time we have |
| 1487 | * already used by all the protocol processing |
| 1488 | */ |
| 1489 | if (mtt > diff) { |
| 1490 | mtt -= diff; |
| 1491 | |
| 1492 | /* |
| 1493 | * Use timer if delay larger than 125 us, and |
| 1494 | * use udelay for smaller values which should |
| 1495 | * be acceptable |
| 1496 | */ |
| 1497 | if (mtt > 125) { |
| 1498 | /* Adjust for timer resolution */ |
| 1499 | mtt = mtt / 125; |
| 1500 | |
| 1501 | /* Setup timer */ |
| 1502 | switch_bank(iobase, BANK4); |
| 1503 | outb(mtt & 0xff, iobase+TMRL); |
| 1504 | outb((mtt >> 8) & 0x0f, iobase+TMRH); |
| 1505 | |
| 1506 | /* Start timer */ |
| 1507 | outb(IRCR1_TMR_EN, iobase+IRCR1); |
| 1508 | self->io.direction = IO_XMIT; |
| 1509 | |
| 1510 | /* Enable timer interrupt */ |
| 1511 | switch_bank(iobase, BANK0); |
| 1512 | outb(IER_TMR_IE, iobase+IER); |
| 1513 | |
| 1514 | /* Timer will take care of the rest */ |
| 1515 | goto out; |
| 1516 | } else |
| 1517 | udelay(mtt); |
| 1518 | } |
| 1519 | } |
| 1520 | /* Enable DMA interrupt */ |
| 1521 | switch_bank(iobase, BANK0); |
| 1522 | outb(IER_DMA_IE, iobase+IER); |
| 1523 | |
| 1524 | /* Transmit frame */ |
| 1525 | nsc_ircc_dma_xmit(self, iobase); |
| 1526 | } |
| 1527 | out: |
| 1528 | /* Not busy transmitting anymore if window is not full, |
| 1529 | * and if we don't need to change speed */ |
| 1530 | if ((self->tx_fifo.free < MAX_TX_WINDOW) && (self->new_speed == 0)) |
| 1531 | netif_wake_queue(self->netdev); |
| 1532 | |
| 1533 | /* Restore bank register */ |
| 1534 | outb(bank, iobase+BSR); |
| 1535 | |
| 1536 | dev->trans_start = jiffies; |
| 1537 | spin_unlock_irqrestore(&self->lock, flags); |
| 1538 | dev_kfree_skb(skb); |
| 1539 | |
| 1540 | return 0; |
| 1541 | } |
| 1542 | |
| 1543 | /* |
| 1544 | * Function nsc_ircc_dma_xmit (self, iobase) |
| 1545 | * |
| 1546 | * Transmit data using DMA |
| 1547 | * |
| 1548 | */ |
| 1549 | static void nsc_ircc_dma_xmit(struct nsc_ircc_cb *self, int iobase) |
| 1550 | { |
| 1551 | int bsr; |
| 1552 | |
| 1553 | /* Save current bank */ |
| 1554 | bsr = inb(iobase+BSR); |
| 1555 | |
| 1556 | /* Disable DMA */ |
| 1557 | switch_bank(iobase, BANK0); |
| 1558 | outb(inb(iobase+MCR) & ~MCR_DMA_EN, iobase+MCR); |
| 1559 | |
| 1560 | self->io.direction = IO_XMIT; |
| 1561 | |
| 1562 | /* Choose transmit DMA channel */ |
| 1563 | switch_bank(iobase, BANK2); |
| 1564 | outb(ECR1_DMASWP|ECR1_DMANF|ECR1_EXT_SL, iobase+ECR1); |
| 1565 | |
| 1566 | irda_setup_dma(self->io.dma, |
| 1567 | ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - |
| 1568 | self->tx_buff.head) + self->tx_buff_dma, |
| 1569 | self->tx_fifo.queue[self->tx_fifo.ptr].len, |
| 1570 | DMA_TX_MODE); |
| 1571 | |
| 1572 | /* Enable DMA and SIR interaction pulse */ |
| 1573 | switch_bank(iobase, BANK0); |
| 1574 | outb(inb(iobase+MCR)|MCR_TX_DFR|MCR_DMA_EN|MCR_IR_PLS, iobase+MCR); |
| 1575 | |
| 1576 | /* Restore bank register */ |
| 1577 | outb(bsr, iobase+BSR); |
| 1578 | } |
| 1579 | |
| 1580 | /* |
| 1581 | * Function nsc_ircc_pio_xmit (self, iobase) |
| 1582 | * |
| 1583 | * Transmit data using PIO. Returns the number of bytes that actually |
| 1584 | * got transferred |
| 1585 | * |
| 1586 | */ |
| 1587 | static int nsc_ircc_pio_write(int iobase, __u8 *buf, int len, int fifo_size) |
| 1588 | { |
| 1589 | int actual = 0; |
| 1590 | __u8 bank; |
| 1591 | |
| 1592 | IRDA_DEBUG(4, "%s()\n", __FUNCTION__); |
| 1593 | |
| 1594 | /* Save current bank */ |
| 1595 | bank = inb(iobase+BSR); |
| 1596 | |
| 1597 | switch_bank(iobase, BANK0); |
| 1598 | if (!(inb_p(iobase+LSR) & LSR_TXEMP)) { |
| 1599 | IRDA_DEBUG(4, "%s(), warning, FIFO not empty yet!\n", |
| 1600 | __FUNCTION__); |
| 1601 | |
| 1602 | /* FIFO may still be filled to the Tx interrupt threshold */ |
| 1603 | fifo_size -= 17; |
| 1604 | } |
| 1605 | |
| 1606 | /* Fill FIFO with current frame */ |
| 1607 | while ((fifo_size-- > 0) && (actual < len)) { |
| 1608 | /* Transmit next byte */ |
| 1609 | outb(buf[actual++], iobase+TXD); |
| 1610 | } |
| 1611 | |
| 1612 | IRDA_DEBUG(4, "%s(), fifo_size %d ; %d sent of %d\n", |
| 1613 | __FUNCTION__, fifo_size, actual, len); |
| 1614 | |
| 1615 | /* Restore bank */ |
| 1616 | outb(bank, iobase+BSR); |
| 1617 | |
| 1618 | return actual; |
| 1619 | } |
| 1620 | |
| 1621 | /* |
| 1622 | * Function nsc_ircc_dma_xmit_complete (self) |
| 1623 | * |
| 1624 | * The transfer of a frame in finished. This function will only be called |
| 1625 | * by the interrupt handler |
| 1626 | * |
| 1627 | */ |
| 1628 | static int nsc_ircc_dma_xmit_complete(struct nsc_ircc_cb *self) |
| 1629 | { |
| 1630 | int iobase; |
| 1631 | __u8 bank; |
| 1632 | int ret = TRUE; |
| 1633 | |
| 1634 | IRDA_DEBUG(2, "%s()\n", __FUNCTION__); |
| 1635 | |
| 1636 | iobase = self->io.fir_base; |
| 1637 | |
| 1638 | /* Save current bank */ |
| 1639 | bank = inb(iobase+BSR); |
| 1640 | |
| 1641 | /* Disable DMA */ |
| 1642 | switch_bank(iobase, BANK0); |
| 1643 | outb(inb(iobase+MCR) & ~MCR_DMA_EN, iobase+MCR); |
| 1644 | |
| 1645 | /* Check for underrrun! */ |
| 1646 | if (inb(iobase+ASCR) & ASCR_TXUR) { |
| 1647 | self->stats.tx_errors++; |
| 1648 | self->stats.tx_fifo_errors++; |
| 1649 | |
| 1650 | /* Clear bit, by writing 1 into it */ |
| 1651 | outb(ASCR_TXUR, iobase+ASCR); |
| 1652 | } else { |
| 1653 | self->stats.tx_packets++; |
| 1654 | } |
| 1655 | |
| 1656 | /* Finished with this frame, so prepare for next */ |
| 1657 | self->tx_fifo.ptr++; |
| 1658 | self->tx_fifo.len--; |
| 1659 | |
| 1660 | /* Any frames to be sent back-to-back? */ |
| 1661 | if (self->tx_fifo.len) { |
| 1662 | nsc_ircc_dma_xmit(self, iobase); |
| 1663 | |
| 1664 | /* Not finished yet! */ |
| 1665 | ret = FALSE; |
| 1666 | } else { |
| 1667 | /* Reset Tx FIFO info */ |
| 1668 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 1669 | self->tx_fifo.tail = self->tx_buff.head; |
| 1670 | } |
| 1671 | |
| 1672 | /* Make sure we have room for more frames and |
| 1673 | * that we don't need to change speed */ |
| 1674 | if ((self->tx_fifo.free < MAX_TX_WINDOW) && (self->new_speed == 0)) { |
| 1675 | /* Not busy transmitting anymore */ |
| 1676 | /* Tell the network layer, that we can accept more frames */ |
| 1677 | netif_wake_queue(self->netdev); |
| 1678 | } |
| 1679 | |
| 1680 | /* Restore bank */ |
| 1681 | outb(bank, iobase+BSR); |
| 1682 | |
| 1683 | return ret; |
| 1684 | } |
| 1685 | |
| 1686 | /* |
| 1687 | * Function nsc_ircc_dma_receive (self) |
| 1688 | * |
| 1689 | * Get ready for receiving a frame. The device will initiate a DMA |
| 1690 | * if it starts to receive a frame. |
| 1691 | * |
| 1692 | */ |
| 1693 | static int nsc_ircc_dma_receive(struct nsc_ircc_cb *self) |
| 1694 | { |
| 1695 | int iobase; |
| 1696 | __u8 bsr; |
| 1697 | |
| 1698 | iobase = self->io.fir_base; |
| 1699 | |
| 1700 | /* Reset Tx FIFO info */ |
| 1701 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 1702 | self->tx_fifo.tail = self->tx_buff.head; |
| 1703 | |
| 1704 | /* Save current bank */ |
| 1705 | bsr = inb(iobase+BSR); |
| 1706 | |
| 1707 | /* Disable DMA */ |
| 1708 | switch_bank(iobase, BANK0); |
| 1709 | outb(inb(iobase+MCR) & ~MCR_DMA_EN, iobase+MCR); |
| 1710 | |
| 1711 | /* Choose DMA Rx, DMA Fairness, and Advanced mode */ |
| 1712 | switch_bank(iobase, BANK2); |
| 1713 | outb(ECR1_DMANF|ECR1_EXT_SL, iobase+ECR1); |
| 1714 | |
| 1715 | self->io.direction = IO_RECV; |
| 1716 | self->rx_buff.data = self->rx_buff.head; |
| 1717 | |
| 1718 | /* Reset Rx FIFO. This will also flush the ST_FIFO */ |
| 1719 | switch_bank(iobase, BANK0); |
| 1720 | outb(FCR_RXSR|FCR_FIFO_EN, iobase+FCR); |
| 1721 | |
| 1722 | self->st_fifo.len = self->st_fifo.pending_bytes = 0; |
| 1723 | self->st_fifo.tail = self->st_fifo.head = 0; |
| 1724 | |
| 1725 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, |
| 1726 | DMA_RX_MODE); |
| 1727 | |
| 1728 | /* Enable DMA */ |
| 1729 | switch_bank(iobase, BANK0); |
| 1730 | outb(inb(iobase+MCR)|MCR_DMA_EN, iobase+MCR); |
| 1731 | |
| 1732 | /* Restore bank register */ |
| 1733 | outb(bsr, iobase+BSR); |
| 1734 | |
| 1735 | return 0; |
| 1736 | } |
| 1737 | |
| 1738 | /* |
| 1739 | * Function nsc_ircc_dma_receive_complete (self) |
| 1740 | * |
| 1741 | * Finished with receiving frames |
| 1742 | * |
| 1743 | * |
| 1744 | */ |
| 1745 | static int nsc_ircc_dma_receive_complete(struct nsc_ircc_cb *self, int iobase) |
| 1746 | { |
| 1747 | struct st_fifo *st_fifo; |
| 1748 | struct sk_buff *skb; |
| 1749 | __u8 status; |
| 1750 | __u8 bank; |
| 1751 | int len; |
| 1752 | |
| 1753 | st_fifo = &self->st_fifo; |
| 1754 | |
| 1755 | /* Save current bank */ |
| 1756 | bank = inb(iobase+BSR); |
| 1757 | |
| 1758 | /* Read all entries in status FIFO */ |
| 1759 | switch_bank(iobase, BANK5); |
| 1760 | while ((status = inb(iobase+FRM_ST)) & FRM_ST_VLD) { |
| 1761 | /* We must empty the status FIFO no matter what */ |
| 1762 | len = inb(iobase+RFLFL) | ((inb(iobase+RFLFH) & 0x1f) << 8); |
| 1763 | |
| 1764 | if (st_fifo->tail >= MAX_RX_WINDOW) { |
| 1765 | IRDA_DEBUG(0, "%s(), window is full!\n", __FUNCTION__); |
| 1766 | continue; |
| 1767 | } |
| 1768 | |
| 1769 | st_fifo->entries[st_fifo->tail].status = status; |
| 1770 | st_fifo->entries[st_fifo->tail].len = len; |
| 1771 | st_fifo->pending_bytes += len; |
| 1772 | st_fifo->tail++; |
| 1773 | st_fifo->len++; |
| 1774 | } |
| 1775 | /* Try to process all entries in status FIFO */ |
| 1776 | while (st_fifo->len > 0) { |
| 1777 | /* Get first entry */ |
| 1778 | status = st_fifo->entries[st_fifo->head].status; |
| 1779 | len = st_fifo->entries[st_fifo->head].len; |
| 1780 | st_fifo->pending_bytes -= len; |
| 1781 | st_fifo->head++; |
| 1782 | st_fifo->len--; |
| 1783 | |
| 1784 | /* Check for errors */ |
| 1785 | if (status & FRM_ST_ERR_MSK) { |
| 1786 | if (status & FRM_ST_LOST_FR) { |
| 1787 | /* Add number of lost frames to stats */ |
| 1788 | self->stats.rx_errors += len; |
| 1789 | } else { |
| 1790 | /* Skip frame */ |
| 1791 | self->stats.rx_errors++; |
| 1792 | |
| 1793 | self->rx_buff.data += len; |
| 1794 | |
| 1795 | if (status & FRM_ST_MAX_LEN) |
| 1796 | self->stats.rx_length_errors++; |
| 1797 | |
| 1798 | if (status & FRM_ST_PHY_ERR) |
| 1799 | self->stats.rx_frame_errors++; |
| 1800 | |
| 1801 | if (status & FRM_ST_BAD_CRC) |
| 1802 | self->stats.rx_crc_errors++; |
| 1803 | } |
| 1804 | /* The errors below can be reported in both cases */ |
| 1805 | if (status & FRM_ST_OVR1) |
| 1806 | self->stats.rx_fifo_errors++; |
| 1807 | |
| 1808 | if (status & FRM_ST_OVR2) |
| 1809 | self->stats.rx_fifo_errors++; |
| 1810 | } else { |
| 1811 | /* |
| 1812 | * First we must make sure that the frame we |
| 1813 | * want to deliver is all in main memory. If we |
| 1814 | * cannot tell, then we check if the Rx FIFO is |
| 1815 | * empty. If not then we will have to take a nap |
| 1816 | * and try again later. |
| 1817 | */ |
| 1818 | if (st_fifo->pending_bytes < self->io.fifo_size) { |
| 1819 | switch_bank(iobase, BANK0); |
| 1820 | if (inb(iobase+LSR) & LSR_RXDA) { |
| 1821 | /* Put this entry back in fifo */ |
| 1822 | st_fifo->head--; |
| 1823 | st_fifo->len++; |
| 1824 | st_fifo->pending_bytes += len; |
| 1825 | st_fifo->entries[st_fifo->head].status = status; |
| 1826 | st_fifo->entries[st_fifo->head].len = len; |
| 1827 | /* |
| 1828 | * DMA not finished yet, so try again |
| 1829 | * later, set timer value, resolution |
| 1830 | * 125 us |
| 1831 | */ |
| 1832 | switch_bank(iobase, BANK4); |
| 1833 | outb(0x02, iobase+TMRL); /* x 125 us */ |
| 1834 | outb(0x00, iobase+TMRH); |
| 1835 | |
| 1836 | /* Start timer */ |
| 1837 | outb(IRCR1_TMR_EN, iobase+IRCR1); |
| 1838 | |
| 1839 | /* Restore bank register */ |
| 1840 | outb(bank, iobase+BSR); |
| 1841 | |
| 1842 | return FALSE; /* I'll be back! */ |
| 1843 | } |
| 1844 | } |
| 1845 | |
| 1846 | /* |
| 1847 | * Remember the time we received this frame, so we can |
| 1848 | * reduce the min turn time a bit since we will know |
| 1849 | * how much time we have used for protocol processing |
| 1850 | */ |
| 1851 | do_gettimeofday(&self->stamp); |
| 1852 | |
| 1853 | skb = dev_alloc_skb(len+1); |
| 1854 | if (skb == NULL) { |
| 1855 | IRDA_WARNING("%s(), memory squeeze, " |
| 1856 | "dropping frame.\n", |
| 1857 | __FUNCTION__); |
| 1858 | self->stats.rx_dropped++; |
| 1859 | |
| 1860 | /* Restore bank register */ |
| 1861 | outb(bank, iobase+BSR); |
| 1862 | |
| 1863 | return FALSE; |
| 1864 | } |
| 1865 | |
| 1866 | /* Make sure IP header gets aligned */ |
| 1867 | skb_reserve(skb, 1); |
| 1868 | |
| 1869 | /* Copy frame without CRC */ |
| 1870 | if (self->io.speed < 4000000) { |
| 1871 | skb_put(skb, len-2); |
| 1872 | memcpy(skb->data, self->rx_buff.data, len-2); |
| 1873 | } else { |
| 1874 | skb_put(skb, len-4); |
| 1875 | memcpy(skb->data, self->rx_buff.data, len-4); |
| 1876 | } |
| 1877 | |
| 1878 | /* Move to next frame */ |
| 1879 | self->rx_buff.data += len; |
| 1880 | self->stats.rx_bytes += len; |
| 1881 | self->stats.rx_packets++; |
| 1882 | |
| 1883 | skb->dev = self->netdev; |
| 1884 | skb->mac.raw = skb->data; |
| 1885 | skb->protocol = htons(ETH_P_IRDA); |
| 1886 | netif_rx(skb); |
| 1887 | self->netdev->last_rx = jiffies; |
| 1888 | } |
| 1889 | } |
| 1890 | /* Restore bank register */ |
| 1891 | outb(bank, iobase+BSR); |
| 1892 | |
| 1893 | return TRUE; |
| 1894 | } |
| 1895 | |
| 1896 | /* |
| 1897 | * Function nsc_ircc_pio_receive (self) |
| 1898 | * |
| 1899 | * Receive all data in receiver FIFO |
| 1900 | * |
| 1901 | */ |
| 1902 | static void nsc_ircc_pio_receive(struct nsc_ircc_cb *self) |
| 1903 | { |
| 1904 | __u8 byte; |
| 1905 | int iobase; |
| 1906 | |
| 1907 | iobase = self->io.fir_base; |
| 1908 | |
| 1909 | /* Receive all characters in Rx FIFO */ |
| 1910 | do { |
| 1911 | byte = inb(iobase+RXD); |
| 1912 | async_unwrap_char(self->netdev, &self->stats, &self->rx_buff, |
| 1913 | byte); |
| 1914 | } while (inb(iobase+LSR) & LSR_RXDA); /* Data available */ |
| 1915 | } |
| 1916 | |
| 1917 | /* |
| 1918 | * Function nsc_ircc_sir_interrupt (self, eir) |
| 1919 | * |
| 1920 | * Handle SIR interrupt |
| 1921 | * |
| 1922 | */ |
| 1923 | static void nsc_ircc_sir_interrupt(struct nsc_ircc_cb *self, int eir) |
| 1924 | { |
| 1925 | int actual; |
| 1926 | |
| 1927 | /* Check if transmit FIFO is low on data */ |
| 1928 | if (eir & EIR_TXLDL_EV) { |
| 1929 | /* Write data left in transmit buffer */ |
| 1930 | actual = nsc_ircc_pio_write(self->io.fir_base, |
| 1931 | self->tx_buff.data, |
| 1932 | self->tx_buff.len, |
| 1933 | self->io.fifo_size); |
| 1934 | self->tx_buff.data += actual; |
| 1935 | self->tx_buff.len -= actual; |
| 1936 | |
| 1937 | self->io.direction = IO_XMIT; |
| 1938 | |
| 1939 | /* Check if finished */ |
| 1940 | if (self->tx_buff.len > 0) |
| 1941 | self->ier = IER_TXLDL_IE; |
| 1942 | else { |
| 1943 | |
| 1944 | self->stats.tx_packets++; |
| 1945 | netif_wake_queue(self->netdev); |
| 1946 | self->ier = IER_TXEMP_IE; |
| 1947 | } |
| 1948 | |
| 1949 | } |
| 1950 | /* Check if transmission has completed */ |
| 1951 | if (eir & EIR_TXEMP_EV) { |
| 1952 | /* Turn around and get ready to receive some data */ |
| 1953 | self->io.direction = IO_RECV; |
| 1954 | self->ier = IER_RXHDL_IE; |
| 1955 | /* Check if we need to change the speed? |
| 1956 | * Need to be after self->io.direction to avoid race with |
| 1957 | * nsc_ircc_hard_xmit_sir() - Jean II */ |
| 1958 | if (self->new_speed) { |
| 1959 | IRDA_DEBUG(2, "%s(), Changing speed!\n", __FUNCTION__); |
| 1960 | self->ier = nsc_ircc_change_speed(self, |
| 1961 | self->new_speed); |
| 1962 | self->new_speed = 0; |
| 1963 | netif_wake_queue(self->netdev); |
| 1964 | |
| 1965 | /* Check if we are going to FIR */ |
| 1966 | if (self->io.speed > 115200) { |
| 1967 | /* No need to do anymore SIR stuff */ |
| 1968 | return; |
| 1969 | } |
| 1970 | } |
| 1971 | } |
| 1972 | |
| 1973 | /* Rx FIFO threshold or timeout */ |
| 1974 | if (eir & EIR_RXHDL_EV) { |
| 1975 | nsc_ircc_pio_receive(self); |
| 1976 | |
| 1977 | /* Keep receiving */ |
| 1978 | self->ier = IER_RXHDL_IE; |
| 1979 | } |
| 1980 | } |
| 1981 | |
| 1982 | /* |
| 1983 | * Function nsc_ircc_fir_interrupt (self, eir) |
| 1984 | * |
| 1985 | * Handle MIR/FIR interrupt |
| 1986 | * |
| 1987 | */ |
| 1988 | static void nsc_ircc_fir_interrupt(struct nsc_ircc_cb *self, int iobase, |
| 1989 | int eir) |
| 1990 | { |
| 1991 | __u8 bank; |
| 1992 | |
| 1993 | bank = inb(iobase+BSR); |
| 1994 | |
| 1995 | /* Status FIFO event*/ |
| 1996 | if (eir & EIR_SFIF_EV) { |
| 1997 | /* Check if DMA has finished */ |
| 1998 | if (nsc_ircc_dma_receive_complete(self, iobase)) { |
| 1999 | /* Wait for next status FIFO interrupt */ |
| 2000 | self->ier = IER_SFIF_IE; |
| 2001 | } else { |
| 2002 | self->ier = IER_SFIF_IE | IER_TMR_IE; |
| 2003 | } |
| 2004 | } else if (eir & EIR_TMR_EV) { /* Timer finished */ |
| 2005 | /* Disable timer */ |
| 2006 | switch_bank(iobase, BANK4); |
| 2007 | outb(0, iobase+IRCR1); |
| 2008 | |
| 2009 | /* Clear timer event */ |
| 2010 | switch_bank(iobase, BANK0); |
| 2011 | outb(ASCR_CTE, iobase+ASCR); |
| 2012 | |
| 2013 | /* Check if this is a Tx timer interrupt */ |
| 2014 | if (self->io.direction == IO_XMIT) { |
| 2015 | nsc_ircc_dma_xmit(self, iobase); |
| 2016 | |
| 2017 | /* Interrupt on DMA */ |
| 2018 | self->ier = IER_DMA_IE; |
| 2019 | } else { |
| 2020 | /* Check (again) if DMA has finished */ |
| 2021 | if (nsc_ircc_dma_receive_complete(self, iobase)) { |
| 2022 | self->ier = IER_SFIF_IE; |
| 2023 | } else { |
| 2024 | self->ier = IER_SFIF_IE | IER_TMR_IE; |
| 2025 | } |
| 2026 | } |
| 2027 | } else if (eir & EIR_DMA_EV) { |
| 2028 | /* Finished with all transmissions? */ |
| 2029 | if (nsc_ircc_dma_xmit_complete(self)) { |
| 2030 | if(self->new_speed != 0) { |
| 2031 | /* As we stop the Tx queue, the speed change |
| 2032 | * need to be done when the Tx fifo is |
| 2033 | * empty. Ask for a Tx done interrupt */ |
| 2034 | self->ier = IER_TXEMP_IE; |
| 2035 | } else { |
| 2036 | /* Check if there are more frames to be |
| 2037 | * transmitted */ |
| 2038 | if (irda_device_txqueue_empty(self->netdev)) { |
| 2039 | /* Prepare for receive */ |
| 2040 | nsc_ircc_dma_receive(self); |
| 2041 | self->ier = IER_SFIF_IE; |
| 2042 | } else |
| 2043 | IRDA_WARNING("%s(), potential " |
| 2044 | "Tx queue lockup !\n", |
| 2045 | __FUNCTION__); |
| 2046 | } |
| 2047 | } else { |
| 2048 | /* Not finished yet, so interrupt on DMA again */ |
| 2049 | self->ier = IER_DMA_IE; |
| 2050 | } |
| 2051 | } else if (eir & EIR_TXEMP_EV) { |
| 2052 | /* The Tx FIFO has totally drained out, so now we can change |
| 2053 | * the speed... - Jean II */ |
| 2054 | self->ier = nsc_ircc_change_speed(self, self->new_speed); |
| 2055 | self->new_speed = 0; |
| 2056 | netif_wake_queue(self->netdev); |
| 2057 | /* Note : nsc_ircc_change_speed() restarted Rx fifo */ |
| 2058 | } |
| 2059 | |
| 2060 | outb(bank, iobase+BSR); |
| 2061 | } |
| 2062 | |
| 2063 | /* |
| 2064 | * Function nsc_ircc_interrupt (irq, dev_id, regs) |
| 2065 | * |
| 2066 | * An interrupt from the chip has arrived. Time to do some work |
| 2067 | * |
| 2068 | */ |
| 2069 | static irqreturn_t nsc_ircc_interrupt(int irq, void *dev_id, |
| 2070 | struct pt_regs *regs) |
| 2071 | { |
| 2072 | struct net_device *dev = (struct net_device *) dev_id; |
| 2073 | struct nsc_ircc_cb *self; |
| 2074 | __u8 bsr, eir; |
| 2075 | int iobase; |
| 2076 | |
| 2077 | if (!dev) { |
| 2078 | IRDA_WARNING("%s: irq %d for unknown device.\n", |
| 2079 | driver_name, irq); |
| 2080 | return IRQ_NONE; |
| 2081 | } |
| 2082 | self = (struct nsc_ircc_cb *) dev->priv; |
| 2083 | |
| 2084 | spin_lock(&self->lock); |
| 2085 | |
| 2086 | iobase = self->io.fir_base; |
| 2087 | |
| 2088 | bsr = inb(iobase+BSR); /* Save current bank */ |
| 2089 | |
| 2090 | switch_bank(iobase, BANK0); |
| 2091 | self->ier = inb(iobase+IER); |
| 2092 | eir = inb(iobase+EIR) & self->ier; /* Mask out the interesting ones */ |
| 2093 | |
| 2094 | outb(0, iobase+IER); /* Disable interrupts */ |
| 2095 | |
| 2096 | if (eir) { |
| 2097 | /* Dispatch interrupt handler for the current speed */ |
| 2098 | if (self->io.speed > 115200) |
| 2099 | nsc_ircc_fir_interrupt(self, iobase, eir); |
| 2100 | else |
| 2101 | nsc_ircc_sir_interrupt(self, eir); |
| 2102 | } |
| 2103 | |
| 2104 | outb(self->ier, iobase+IER); /* Restore interrupts */ |
| 2105 | outb(bsr, iobase+BSR); /* Restore bank register */ |
| 2106 | |
| 2107 | spin_unlock(&self->lock); |
| 2108 | return IRQ_RETVAL(eir); |
| 2109 | } |
| 2110 | |
| 2111 | /* |
| 2112 | * Function nsc_ircc_is_receiving (self) |
| 2113 | * |
| 2114 | * Return TRUE is we are currently receiving a frame |
| 2115 | * |
| 2116 | */ |
| 2117 | static int nsc_ircc_is_receiving(struct nsc_ircc_cb *self) |
| 2118 | { |
| 2119 | unsigned long flags; |
| 2120 | int status = FALSE; |
| 2121 | int iobase; |
| 2122 | __u8 bank; |
| 2123 | |
| 2124 | IRDA_ASSERT(self != NULL, return FALSE;); |
| 2125 | |
| 2126 | spin_lock_irqsave(&self->lock, flags); |
| 2127 | |
| 2128 | if (self->io.speed > 115200) { |
| 2129 | iobase = self->io.fir_base; |
| 2130 | |
| 2131 | /* Check if rx FIFO is not empty */ |
| 2132 | bank = inb(iobase+BSR); |
| 2133 | switch_bank(iobase, BANK2); |
| 2134 | if ((inb(iobase+RXFLV) & 0x3f) != 0) { |
| 2135 | /* We are receiving something */ |
| 2136 | status = TRUE; |
| 2137 | } |
| 2138 | outb(bank, iobase+BSR); |
| 2139 | } else |
| 2140 | status = (self->rx_buff.state != OUTSIDE_FRAME); |
| 2141 | |
| 2142 | spin_unlock_irqrestore(&self->lock, flags); |
| 2143 | |
| 2144 | return status; |
| 2145 | } |
| 2146 | |
| 2147 | /* |
| 2148 | * Function nsc_ircc_net_open (dev) |
| 2149 | * |
| 2150 | * Start the device |
| 2151 | * |
| 2152 | */ |
| 2153 | static int nsc_ircc_net_open(struct net_device *dev) |
| 2154 | { |
| 2155 | struct nsc_ircc_cb *self; |
| 2156 | int iobase; |
| 2157 | char hwname[32]; |
| 2158 | __u8 bank; |
| 2159 | |
| 2160 | IRDA_DEBUG(4, "%s()\n", __FUNCTION__); |
| 2161 | |
| 2162 | IRDA_ASSERT(dev != NULL, return -1;); |
| 2163 | self = (struct nsc_ircc_cb *) dev->priv; |
| 2164 | |
| 2165 | IRDA_ASSERT(self != NULL, return 0;); |
| 2166 | |
| 2167 | iobase = self->io.fir_base; |
| 2168 | |
| 2169 | if (request_irq(self->io.irq, nsc_ircc_interrupt, 0, dev->name, dev)) { |
| 2170 | IRDA_WARNING("%s, unable to allocate irq=%d\n", |
| 2171 | driver_name, self->io.irq); |
| 2172 | return -EAGAIN; |
| 2173 | } |
| 2174 | /* |
| 2175 | * Always allocate the DMA channel after the IRQ, and clean up on |
| 2176 | * failure. |
| 2177 | */ |
| 2178 | if (request_dma(self->io.dma, dev->name)) { |
| 2179 | IRDA_WARNING("%s, unable to allocate dma=%d\n", |
| 2180 | driver_name, self->io.dma); |
| 2181 | free_irq(self->io.irq, dev); |
| 2182 | return -EAGAIN; |
| 2183 | } |
| 2184 | |
| 2185 | /* Save current bank */ |
| 2186 | bank = inb(iobase+BSR); |
| 2187 | |
| 2188 | /* turn on interrupts */ |
| 2189 | switch_bank(iobase, BANK0); |
| 2190 | outb(IER_LS_IE | IER_RXHDL_IE, iobase+IER); |
| 2191 | |
| 2192 | /* Restore bank register */ |
| 2193 | outb(bank, iobase+BSR); |
| 2194 | |
| 2195 | /* Ready to play! */ |
| 2196 | netif_start_queue(dev); |
| 2197 | |
| 2198 | /* Give self a hardware name */ |
| 2199 | sprintf(hwname, "NSC-FIR @ 0x%03x", self->io.fir_base); |
| 2200 | |
| 2201 | /* |
| 2202 | * Open new IrLAP layer instance, now that everything should be |
| 2203 | * initialized properly |
| 2204 | */ |
| 2205 | self->irlap = irlap_open(dev, &self->qos, hwname); |
| 2206 | |
| 2207 | return 0; |
| 2208 | } |
| 2209 | |
| 2210 | /* |
| 2211 | * Function nsc_ircc_net_close (dev) |
| 2212 | * |
| 2213 | * Stop the device |
| 2214 | * |
| 2215 | */ |
| 2216 | static int nsc_ircc_net_close(struct net_device *dev) |
| 2217 | { |
| 2218 | struct nsc_ircc_cb *self; |
| 2219 | int iobase; |
| 2220 | __u8 bank; |
| 2221 | |
| 2222 | IRDA_DEBUG(4, "%s()\n", __FUNCTION__); |
| 2223 | |
| 2224 | IRDA_ASSERT(dev != NULL, return -1;); |
| 2225 | |
| 2226 | self = (struct nsc_ircc_cb *) dev->priv; |
| 2227 | IRDA_ASSERT(self != NULL, return 0;); |
| 2228 | |
| 2229 | /* Stop device */ |
| 2230 | netif_stop_queue(dev); |
| 2231 | |
| 2232 | /* Stop and remove instance of IrLAP */ |
| 2233 | if (self->irlap) |
| 2234 | irlap_close(self->irlap); |
| 2235 | self->irlap = NULL; |
| 2236 | |
| 2237 | iobase = self->io.fir_base; |
| 2238 | |
| 2239 | disable_dma(self->io.dma); |
| 2240 | |
| 2241 | /* Save current bank */ |
| 2242 | bank = inb(iobase+BSR); |
| 2243 | |
| 2244 | /* Disable interrupts */ |
| 2245 | switch_bank(iobase, BANK0); |
| 2246 | outb(0, iobase+IER); |
| 2247 | |
| 2248 | free_irq(self->io.irq, dev); |
| 2249 | free_dma(self->io.dma); |
| 2250 | |
| 2251 | /* Restore bank register */ |
| 2252 | outb(bank, iobase+BSR); |
| 2253 | |
| 2254 | return 0; |
| 2255 | } |
| 2256 | |
| 2257 | /* |
| 2258 | * Function nsc_ircc_net_ioctl (dev, rq, cmd) |
| 2259 | * |
| 2260 | * Process IOCTL commands for this device |
| 2261 | * |
| 2262 | */ |
| 2263 | static int nsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 2264 | { |
| 2265 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 2266 | struct nsc_ircc_cb *self; |
| 2267 | unsigned long flags; |
| 2268 | int ret = 0; |
| 2269 | |
| 2270 | IRDA_ASSERT(dev != NULL, return -1;); |
| 2271 | |
| 2272 | self = dev->priv; |
| 2273 | |
| 2274 | IRDA_ASSERT(self != NULL, return -1;); |
| 2275 | |
| 2276 | IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__, dev->name, cmd); |
| 2277 | |
| 2278 | switch (cmd) { |
| 2279 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
| 2280 | if (!capable(CAP_NET_ADMIN)) { |
| 2281 | ret = -EPERM; |
| 2282 | break; |
| 2283 | } |
| 2284 | spin_lock_irqsave(&self->lock, flags); |
| 2285 | nsc_ircc_change_speed(self, irq->ifr_baudrate); |
| 2286 | spin_unlock_irqrestore(&self->lock, flags); |
| 2287 | break; |
| 2288 | case SIOCSMEDIABUSY: /* Set media busy */ |
| 2289 | if (!capable(CAP_NET_ADMIN)) { |
| 2290 | ret = -EPERM; |
| 2291 | break; |
| 2292 | } |
| 2293 | irda_device_set_media_busy(self->netdev, TRUE); |
| 2294 | break; |
| 2295 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
| 2296 | /* This is already protected */ |
| 2297 | irq->ifr_receiving = nsc_ircc_is_receiving(self); |
| 2298 | break; |
| 2299 | default: |
| 2300 | ret = -EOPNOTSUPP; |
| 2301 | } |
| 2302 | return ret; |
| 2303 | } |
| 2304 | |
| 2305 | static struct net_device_stats *nsc_ircc_net_get_stats(struct net_device *dev) |
| 2306 | { |
| 2307 | struct nsc_ircc_cb *self = (struct nsc_ircc_cb *) dev->priv; |
| 2308 | |
| 2309 | return &self->stats; |
| 2310 | } |
| 2311 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2312 | static int nsc_ircc_suspend(struct platform_device *dev, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2313 | { |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2314 | struct nsc_ircc_cb *self = platform_get_drvdata(dev); |
| 2315 | int bank; |
| 2316 | unsigned long flags; |
| 2317 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | |
| 2319 | if (self->io.suspended) |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2320 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2321 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2322 | IRDA_DEBUG(1, "%s, Suspending\n", driver_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2323 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2324 | rtnl_lock(); |
| 2325 | if (netif_running(self->netdev)) { |
| 2326 | netif_device_detach(self->netdev); |
| 2327 | spin_lock_irqsave(&self->lock, flags); |
| 2328 | /* Save current bank */ |
| 2329 | bank = inb(iobase+BSR); |
| 2330 | |
| 2331 | /* Disable interrupts */ |
| 2332 | switch_bank(iobase, BANK0); |
| 2333 | outb(0, iobase+IER); |
| 2334 | |
| 2335 | /* Restore bank register */ |
| 2336 | outb(bank, iobase+BSR); |
| 2337 | |
| 2338 | spin_unlock_irqrestore(&self->lock, flags); |
| 2339 | free_irq(self->io.irq, self->netdev); |
| 2340 | disable_dma(self->io.dma); |
| 2341 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2342 | self->io.suspended = 1; |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2343 | rtnl_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | return 0; |
| 2346 | } |
| 2347 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2348 | static int nsc_ircc_resume(struct platform_device *dev) |
| 2349 | { |
| 2350 | struct nsc_ircc_cb *self = platform_get_drvdata(dev); |
| 2351 | unsigned long flags; |
| 2352 | |
| 2353 | if (!self->io.suspended) |
| 2354 | return 0; |
| 2355 | |
| 2356 | IRDA_DEBUG(1, "%s, Waking up\n", driver_name); |
| 2357 | |
| 2358 | rtnl_lock(); |
| 2359 | nsc_ircc_setup(&self->io); |
| 2360 | nsc_ircc_init_dongle_interface(self->io.fir_base, self->io.dongle_id); |
| 2361 | |
| 2362 | if (netif_running(self->netdev)) { |
| 2363 | if (request_irq(self->io.irq, nsc_ircc_interrupt, 0, |
| 2364 | self->netdev->name, self->netdev)) { |
| 2365 | IRDA_WARNING("%s, unable to allocate irq=%d\n", |
| 2366 | driver_name, self->io.irq); |
| 2367 | |
| 2368 | /* |
| 2369 | * Don't fail resume process, just kill this |
| 2370 | * network interface |
| 2371 | */ |
| 2372 | unregister_netdevice(self->netdev); |
| 2373 | } else { |
| 2374 | spin_lock_irqsave(&self->lock, flags); |
| 2375 | nsc_ircc_change_speed(self, self->io.speed); |
| 2376 | spin_unlock_irqrestore(&self->lock, flags); |
| 2377 | netif_device_attach(self->netdev); |
| 2378 | } |
| 2379 | |
| 2380 | } else { |
| 2381 | spin_lock_irqsave(&self->lock, flags); |
| 2382 | nsc_ircc_change_speed(self, 9600); |
| 2383 | spin_unlock_irqrestore(&self->lock, flags); |
| 2384 | } |
| 2385 | self->io.suspended = 0; |
| 2386 | rtnl_unlock(); |
| 2387 | |
| 2388 | return 0; |
| 2389 | } |
| 2390 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2391 | MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>"); |
| 2392 | MODULE_DESCRIPTION("NSC IrDA Device Driver"); |
| 2393 | MODULE_LICENSE("GPL"); |
| 2394 | |
| 2395 | |
| 2396 | module_param(qos_mtt_bits, int, 0); |
| 2397 | MODULE_PARM_DESC(qos_mtt_bits, "Minimum Turn Time"); |
| 2398 | module_param_array(io, int, NULL, 0); |
| 2399 | MODULE_PARM_DESC(io, "Base I/O addresses"); |
| 2400 | module_param_array(irq, int, NULL, 0); |
| 2401 | MODULE_PARM_DESC(irq, "IRQ lines"); |
| 2402 | module_param_array(dma, int, NULL, 0); |
| 2403 | MODULE_PARM_DESC(dma, "DMA channels"); |
| 2404 | module_param(dongle_id, int, 0); |
| 2405 | MODULE_PARM_DESC(dongle_id, "Type-id of used dongle"); |
| 2406 | |
| 2407 | module_init(nsc_ircc_init); |
| 2408 | module_exit(nsc_ircc_cleanup); |
| 2409 | |