drivers/net/irda/smsc-ircc2.c

   1 /*********************************************************************
   2  * $Id: smsc-ircc2.c,v 1.19.2.5 2002/10/27 11:34:26 dip Exp $
   3  *
   4  * Description:   Driver for the SMC Infrared Communications Controller
   5  * Status:        Experimental.
   6  * Author:        Daniele Peri (peri@csai.unipa.it)
   7  * Created at:
   8  * Modified at:
   9  * Modified by:
  10  *
  11  *     Copyright (c) 2002      Daniele Peri
  12  *     All Rights Reserved.
  13  *     Copyright (c) 2002      Jean Tourrilhes
  14  *     Copyright (c) 2006      Linus Walleij
  15  *
  16  *
  17  * Based on smc-ircc.c:
  18  *
  19  *     Copyright (c) 2001      Stefani Seibold
  20  *     Copyright (c) 1999-2001 Dag Brattli
  21  *     Copyright (c) 1998-1999 Thomas Davis,
  22  *
  23  *      and irport.c:
  24  *
  25  *     Copyright (c) 1997, 1998, 1999-2000 Dag Brattli, All Rights Reserved.
  26  *
  27  *
  28  *     This program is free software; you can redistribute it and/or
  29  *     modify it under the terms of the GNU General Public License as
  30  *     published by the Free Software Foundation; either version 2 of
  31  *     the License, or (at your option) any later version.
  32  *
  33  *     This program is distributed in the hope that it will be useful,
  34  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  35  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  36  *     GNU General Public License for more details.
  37  *
  38  *     You should have received a copy of the GNU General Public License
  39  *     along with this program; if not, write to the Free Software
  40  *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  41  *     MA 02111-1307 USA
  42  *
  43  ********************************************************************/
  44
  45 #include <linux/module.h>
  46 #include <linux/kernel.h>
  47 #include <linux/types.h>
  48 #include <linux/skbuff.h>
  49 #include <linux/netdevice.h>
  50 #include <linux/ioport.h>
  51 #include <linux/delay.h>
  52 #include <linux/slab.h>
  53 #include <linux/init.h>
  54 #include <linux/rtnetlink.h>
  55 #include <linux/serial_reg.h>
  56 #include <linux/dma-mapping.h>
  57 #include <linux/pnp.h>
  58 #include <linux/platform_device.h>
  59
  60 #include <asm/io.h>
  61 #include <asm/dma.h>
  62 #include <asm/byteorder.h>
  63
  64 #include <linux/spinlock.h>
  65 #include <linux/pm.h>
  66 #ifdef CONFIG_PCI
  67 #include <linux/pci.h>
  68 #endif
  69
  70 #include <net/irda/wrapper.h>
  71 #include <net/irda/irda.h>
  72 #include <net/irda/irda_device.h>
  73
  74 #include "smsc-ircc2.h"
  75 #include "smsc-sio.h"
  76
  77
  78 MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>");
  79 MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver");
  80 MODULE_LICENSE("GPL");
  81
  82 static int ircc_dma = 255;
  83 module_param(ircc_dma, int, 0);
  84 MODULE_PARM_DESC(ircc_dma, "DMA channel");
  85
  86 static int ircc_irq = 255;
  87 module_param(ircc_irq, int, 0);
  88 MODULE_PARM_DESC(ircc_irq, "IRQ line");
  89
  90 static int ircc_fir;
  91 module_param(ircc_fir, int, 0);
  92 MODULE_PARM_DESC(ircc_fir, "FIR Base Address");
  93
  94 static int ircc_sir;
  95 module_param(ircc_sir, int, 0);
  96 MODULE_PARM_DESC(ircc_sir, "SIR Base Address");
  97
  98 static int ircc_cfg;
  99 module_param(ircc_cfg, int, 0);
 100 MODULE_PARM_DESC(ircc_cfg, "Configuration register base address");
 101
 102 static int ircc_transceiver;
 103 module_param(ircc_transceiver, int, 0);
 104 MODULE_PARM_DESC(ircc_transceiver, "Transceiver type");
 105
 106 /* Types */
 107
 108 #ifdef CONFIG_PCI
 109 struct smsc_ircc_subsystem_configuration {
 110         unsigned short vendor; /* PCI vendor ID */
 111         unsigned short device; /* PCI vendor ID */
 112         unsigned short subvendor; /* PCI subsystem vendor ID */
 113         unsigned short subdevice; /* PCI sybsystem device ID */
 114         unsigned short sir_io; /* I/O port for SIR */
 115         unsigned short fir_io; /* I/O port for FIR */
 116         unsigned char  fir_irq; /* FIR IRQ */
 117         unsigned char  fir_dma; /* FIR DMA */
 118         unsigned short cfg_base; /* I/O port for chip configuration */
 119         int (*preconfigure)(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); /* Preconfig function */
 120         const char *name;       /* name shown as info */
 121 };
 122 #endif
 123
 124 struct smsc_transceiver {
 125         char *name;
 126         void (*set_for_speed)(int fir_base, u32 speed);
 127         int  (*probe)(int fir_base);
 128 };
 129
 130 struct smsc_chip {
 131         char *name;
 132         #if 0
 133         u8      type;
 134         #endif
 135         u16 flags;
 136         u8 devid;
 137         u8 rev;
 138 };
 139
 140 struct smsc_chip_address {
 141         unsigned int cfg_base;
 142         unsigned int type;
 143 };
 144
 145 /* Private data for each instance */
 146 struct smsc_ircc_cb {
 147         struct net_device *netdev;     /* Yes! we are some kind of netdevice */
 148         struct net_device_stats stats;
 149         struct irlap_cb    *irlap; /* The link layer we are binded to */
 150
 151         chipio_t io;               /* IrDA controller information */
 152         iobuff_t tx_buff;          /* Transmit buffer */
 153         iobuff_t rx_buff;          /* Receive buffer */
 154         dma_addr_t tx_buff_dma;
 155         dma_addr_t rx_buff_dma;
 156
 157         struct qos_info qos;       /* QoS capabilities for this device */
 158
 159         spinlock_t lock;           /* For serializing operations */
 160
 161         __u32 new_speed;
 162         __u32 flags;               /* Interface flags */
 163
 164         int tx_buff_offsets[10];   /* Offsets between frames in tx_buff */
 165         int tx_len;                /* Number of frames in tx_buff */
 166
 167         int transceiver;
 168         struct platform_device *pldev;
 169 };
 170
 171 /* Constants */
 172
 173 #define SMSC_IRCC2_DRIVER_NAME                  "smsc-ircc2"
 174
 175 #define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED        9600
 176 #define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER        1
 177 #define SMSC_IRCC2_C_NET_TIMEOUT                0
 178 #define SMSC_IRCC2_C_SIR_STOP                   0
 179
 180 static const char *driver_name = SMSC_IRCC2_DRIVER_NAME;
 181
 182 /* Prototypes */
 183
 184 static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq);
 185 static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base);
 186 static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq);
 187 static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self);
 188 static void smsc_ircc_init_chip(struct smsc_ircc_cb *self);
 189 static int __exit smsc_ircc_close(struct smsc_ircc_cb *self);
 190 static int  smsc_ircc_dma_receive(struct smsc_ircc_cb *self);
 191 static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self);
 192 static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self);
 193 static int  smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev);
 194 static int  smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev);
 195 static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs);
 196 static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self);
 197 static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed);
 198 static void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, u32 speed);
 199 static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id);
 200 static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev);
 201 static void smsc_ircc_sir_start(struct smsc_ircc_cb *self);
 202 #if SMSC_IRCC2_C_SIR_STOP
 203 static void smsc_ircc_sir_stop(struct smsc_ircc_cb *self);
 204 #endif
 205 static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self);
 206 static int  smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
 207 static int  smsc_ircc_net_open(struct net_device *dev);
 208 static int  smsc_ircc_net_close(struct net_device *dev);
 209 static int  smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 210 #if SMSC_IRCC2_C_NET_TIMEOUT
 211 static void smsc_ircc_timeout(struct net_device *dev);
 212 #endif
 213 static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev);
 214 static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self);
 215 static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self);
 216 static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed);
 217 static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self);
 218
 219 /* Probing */
 220 static int __init smsc_ircc_look_for_chips(void);
 221 static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type);
 222 static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfg_base, char *type);
 223 static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type);
 224 static int __init smsc_superio_fdc(unsigned short cfg_base);
 225 static int __init smsc_superio_lpc(unsigned short cfg_base);
 226 #ifdef CONFIG_PCI
 227 static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf);
 228 static int __init preconfigure_through_82801(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
 229 static void __init preconfigure_ali_port(struct pci_dev *dev,
 230                                          unsigned short port);
 231 static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
 232 static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
 233                                                     unsigned short ircc_fir,
 234                                                     unsigned short ircc_sir,
 235                                                     unsigned char ircc_dma,
 236                                                     unsigned char ircc_irq);
 237 #endif
 238
 239 /* Transceivers specific functions */
 240
 241 static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed);
 242 static int  smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base);
 243 static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed);
 244 static int  smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base);
 245 static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed);
 246 static int  smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base);
 247
 248 /* Power Management */
 249
 250 static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state);
 251 static int smsc_ircc_resume(struct platform_device *dev);
 252
 253 static struct platform_driver smsc_ircc_driver = {
 254         .suspend        = smsc_ircc_suspend,
 255         .resume         = smsc_ircc_resume,
 256         .driver         = {
 257                 .name   = SMSC_IRCC2_DRIVER_NAME,
 258         },
 259 };
 260
 261 /* Transceivers for SMSC-ircc */
 262
 263 static struct smsc_transceiver smsc_transceivers[] =
 264 {
 265         { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800 },
 266         { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select },
 267         { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc },
 268         { NULL, NULL }
 269 };
 270 #define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1)
 271
 272 /*  SMC SuperIO chipsets definitions */
 273
 274 #define KEY55_1 0       /* SuperIO Configuration mode with Key <0x55> */
 275 #define KEY55_2 1       /* SuperIO Configuration mode with Key <0x55,0x55> */
 276 #define NoIRDA  2       /* SuperIO Chip has no IRDA Port */
 277 #define SIR     0       /* SuperIO Chip has only slow IRDA */
 278 #define FIR     4       /* SuperIO Chip has fast IRDA */
 279 #define SERx4   8       /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */
 280
 281 static struct smsc_chip __initdata fdc_chips_flat[] =
 282 {
 283         /* Base address 0x3f0 or 0x370 */
 284         { "37C44",      KEY55_1|NoIRDA,         0x00, 0x00 }, /* This chip cannot be detected */
 285         { "37C665GT",   KEY55_2|NoIRDA,         0x65, 0x01 },
 286         { "37C665GT",   KEY55_2|NoIRDA,         0x66, 0x01 },
 287         { "37C669",     KEY55_2|SIR|SERx4,      0x03, 0x02 },
 288         { "37C669",     KEY55_2|SIR|SERx4,      0x04, 0x02 }, /* ID? */
 289         { "37C78",      KEY55_2|NoIRDA,         0x78, 0x00 },
 290         { "37N769",     KEY55_1|FIR|SERx4,      0x28, 0x00 },
 291         { "37N869",     KEY55_1|FIR|SERx4,      0x29, 0x00 },
 292         { NULL }
 293 };
 294
 295 static struct smsc_chip __initdata fdc_chips_paged[] =
 296 {
 297         /* Base address 0x3f0 or 0x370 */
 298         { "37B72X",     KEY55_1|SIR|SERx4,      0x4c, 0x00 },
 299         { "37B77X",     KEY55_1|SIR|SERx4,      0x43, 0x00 },
 300         { "37B78X",     KEY55_1|SIR|SERx4,      0x44, 0x00 },
 301         { "37B80X",     KEY55_1|SIR|SERx4,      0x42, 0x00 },
 302         { "37C67X",     KEY55_1|FIR|SERx4,      0x40, 0x00 },
 303         { "37C93X",     KEY55_2|SIR|SERx4,      0x02, 0x01 },
 304         { "37C93XAPM",  KEY55_1|SIR|SERx4,      0x30, 0x01 },
 305         { "37C93XFR",   KEY55_2|FIR|SERx4,      0x03, 0x01 },
 306         { "37M707",     KEY55_1|SIR|SERx4,      0x42, 0x00 },
 307         { "37M81X",     KEY55_1|SIR|SERx4,      0x4d, 0x00 },
 308         { "37N958FR",   KEY55_1|FIR|SERx4,      0x09, 0x04 },
 309         { "37N971",     KEY55_1|FIR|SERx4,      0x0a, 0x00 },
 310         { "37N972",     KEY55_1|FIR|SERx4,      0x0b, 0x00 },
 311         { NULL }
 312 };
 313
 314 static struct smsc_chip __initdata lpc_chips_flat[] =
 315 {
 316         /* Base address 0x2E or 0x4E */
 317         { "47N227",     KEY55_1|FIR|SERx4,      0x5a, 0x00 },
 318         { "47N227",     KEY55_1|FIR|SERx4,      0x7a, 0x00 },
 319         { "47N267",     KEY55_1|FIR|SERx4,      0x5e, 0x00 },
 320         { NULL }
 321 };
 322
 323 static struct smsc_chip __initdata lpc_chips_paged[] =
 324 {
 325         /* Base address 0x2E or 0x4E */
 326         { "47B27X",     KEY55_1|SIR|SERx4,      0x51, 0x00 },
 327         { "47B37X",     KEY55_1|SIR|SERx4,      0x52, 0x00 },
 328         { "47M10X",     KEY55_1|SIR|SERx4,      0x59, 0x00 },
 329         { "47M120",     KEY55_1|NoIRDA|SERx4,   0x5c, 0x00 },
 330         { "47M13X",     KEY55_1|SIR|SERx4,      0x59, 0x00 },
 331         { "47M14X",     KEY55_1|SIR|SERx4,      0x5f, 0x00 },
 332         { "47N252",     KEY55_1|FIR|SERx4,      0x0e, 0x00 },
 333         { "47S42X",     KEY55_1|SIR|SERx4,      0x57, 0x00 },
 334         { NULL }
 335 };
 336
 337 #define SMSCSIO_TYPE_FDC        1
 338 #define SMSCSIO_TYPE_LPC        2
 339 #define SMSCSIO_TYPE_FLAT       4
 340 #define SMSCSIO_TYPE_PAGED      8
 341
 342 static struct smsc_chip_address __initdata possible_addresses[] =
 343 {
 344         { 0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 345         { 0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 346         { 0xe0,  SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 347         { 0x2e,  SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 348         { 0x4e,  SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 349         { 0, 0 }
 350 };
 351
 352 /* Globals */
 353
 354 static struct smsc_ircc_cb *dev_self[] = { NULL, NULL };
 355 static unsigned short dev_count;
 356
 357 static inline void register_bank(int iobase, int bank)
 358 {
 359         outb(((inb(iobase + IRCC_MASTER) & 0xf0) | (bank & 0x07)),
 360                iobase + IRCC_MASTER);
 361 }
 362
 363 #ifdef  CONFIG_PNP
 364 /* PNP hotplug support */
 365 static const struct pnp_device_id smsc_ircc_pnp_table[] = {
 366         { .id = "SMCf010", .driver_data = 0 },
 367         /* and presumably others */
 368         { }
 369 };
 370 MODULE_DEVICE_TABLE(pnp, smsc_ircc_pnp_table);
 371 #endif
 372
 373
 374 /*******************************************************************************
 375  *
 376  *
 377  * SMSC-ircc stuff
 378  *
 379  *
 380  *******************************************************************************/
 381
 382 /*
 383  * Function smsc_ircc_init ()
 384  *
 385  *    Initialize chip. Just try to find out how many chips we are dealing with
 386  *    and where they are
 387  */
 388 static int __init smsc_ircc_init(void)
 389 {
 390         int ret;
 391
 392         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 393
 394         ret = platform_driver_register(&smsc_ircc_driver);
 395         if (ret) {
 396                 IRDA_ERROR("%s, Can't register driver!\n", driver_name);
 397                 return ret;
 398         }
 399
 400 #ifdef CONFIG_PCI
 401         if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) {
 402                 /* Ignore errors from preconfiguration */
 403                 IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name);
 404         }
 405 #endif
 406
 407         dev_count = 0;
 408
 409         if (ircc_fir > 0 && ircc_sir > 0) {
 410                 IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir);
 411                 IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir);
 412
 413                 if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq))
 414                         ret = -ENODEV;
 415         } else {
 416                 ret = -ENODEV;
 417
 418                 /* try user provided configuration register base address */
 419                 if (ircc_cfg > 0) {
 420                         IRDA_MESSAGE(" Overriding configuration address "
 421                                      "0x%04x\n", ircc_cfg);
 422                         if (!smsc_superio_fdc(ircc_cfg))
 423                                 ret = 0;
 424                         if (!smsc_superio_lpc(ircc_cfg))
 425                                 ret = 0;
 426                 }
 427
 428                 if (smsc_ircc_look_for_chips() > 0)
 429                         ret = 0;
 430         }
 431
 432         if (ret)
 433                 platform_driver_unregister(&smsc_ircc_driver);
 434
 435         return ret;
 436 }
 437
 438 /*
 439  * Function smsc_ircc_open (firbase, sirbase, dma, irq)
 440  *
 441  *    Try to open driver instance
 442  *
 443  */
 444 static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq)
 445 {
 446         struct smsc_ircc_cb *self;
 447         struct net_device *dev;
 448         int err;
 449
 450         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 451
 452         err = smsc_ircc_present(fir_base, sir_base);
 453         if (err)
 454                 goto err_out;
 455
 456         err = -ENOMEM;
 457         if (dev_count >= ARRAY_SIZE(dev_self)) {
 458                 IRDA_WARNING("%s(), too many devices!\n", __FUNCTION__);
 459                 goto err_out1;
 460         }
 461
 462         /*
 463          *  Allocate new instance of the driver
 464          */
 465         dev = alloc_irdadev(sizeof(struct smsc_ircc_cb));
 466         if (!dev) {
 467                 IRDA_WARNING("%s() can't allocate net device\n", __FUNCTION__);
 468                 goto err_out1;
 469         }
 470
 471         SET_MODULE_OWNER(dev);
 472
 473         dev->hard_start_xmit = smsc_ircc_hard_xmit_sir;
 474 #if SMSC_IRCC2_C_NET_TIMEOUT
 475         dev->tx_timeout      = smsc_ircc_timeout;
 476         dev->watchdog_timeo  = HZ * 2;  /* Allow enough time for speed change */
 477 #endif
 478         dev->open            = smsc_ircc_net_open;
 479         dev->stop            = smsc_ircc_net_close;
 480         dev->do_ioctl        = smsc_ircc_net_ioctl;
 481         dev->get_stats       = smsc_ircc_net_get_stats;
 482
 483         self = netdev_priv(dev);
 484         self->netdev = dev;
 485
 486         /* Make ifconfig display some details */
 487         dev->base_addr = self->io.fir_base = fir_base;
 488         dev->irq = self->io.irq = irq;
 489
 490         /* Need to store self somewhere */
 491         dev_self[dev_count] = self;
 492         spin_lock_init(&self->lock);
 493
 494         self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE;
 495         self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE;
 496
 497         self->rx_buff.head =
 498                 dma_alloc_coherent(NULL, self->rx_buff.truesize,
 499                                    &self->rx_buff_dma, GFP_KERNEL);
 500         if (self->rx_buff.head == NULL) {
 501                 IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n",
 502                            driver_name);
 503                 goto err_out2;
 504         }
 505
 506         self->tx_buff.head =
 507                 dma_alloc_coherent(NULL, self->tx_buff.truesize,
 508                                    &self->tx_buff_dma, GFP_KERNEL);
 509         if (self->tx_buff.head == NULL) {
 510                 IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n",
 511                            driver_name);
 512                 goto err_out3;
 513         }
 514
 515         memset(self->rx_buff.head, 0, self->rx_buff.truesize);
 516         memset(self->tx_buff.head, 0, self->tx_buff.truesize);
 517
 518         self->rx_buff.in_frame = FALSE;
 519         self->rx_buff.state = OUTSIDE_FRAME;
 520         self->tx_buff.data = self->tx_buff.head;
 521         self->rx_buff.data = self->rx_buff.head;
 522
 523         smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq);
 524         smsc_ircc_setup_qos(self);
 525         smsc_ircc_init_chip(self);
 526
 527         if (ircc_transceiver > 0  &&
 528             ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS)
 529                 self->transceiver = ircc_transceiver;
 530         else
 531                 smsc_ircc_probe_transceiver(self);
 532
 533         err = register_netdev(self->netdev);
 534         if (err) {
 535                 IRDA_ERROR("%s, Network device registration failed!\n",
 536                            driver_name);
 537                 goto err_out4;
 538         }
 539
 540         self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME,
 541                                                       dev_count, NULL, 0);
 542         if (IS_ERR(self->pldev)) {
 543                 err = PTR_ERR(self->pldev);
 544                 goto err_out5;
 545         }
 546         platform_set_drvdata(self->pldev, self);
 547
 548         IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
 549         dev_count++;
 550
 551         return 0;
 552
 553  err_out5:
 554         unregister_netdev(self->netdev);
 555
 556  err_out4:
 557         dma_free_coherent(NULL, self->tx_buff.truesize,
 558                           self->tx_buff.head, self->tx_buff_dma);
 559  err_out3:
 560         dma_free_coherent(NULL, self->rx_buff.truesize,
 561                           self->rx_buff.head, self->rx_buff_dma);
 562  err_out2:
 563         free_netdev(self->netdev);
 564         dev_self[dev_count] = NULL;
 565  err_out1:
 566         release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
 567         release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
 568  err_out:
 569         return err;
 570 }
 571
 572 /*
 573  * Function smsc_ircc_present(fir_base, sir_base)
 574  *
 575  *    Check the smsc-ircc chip presence
 576  *
 577  */
 578 static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base)
 579 {
 580         unsigned char low, high, chip, config, dma, irq, version;
 581
 582         if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT,
 583                             driver_name)) {
 584                 IRDA_WARNING("%s: can't get fir_base of 0x%03x\n",
 585                              __FUNCTION__, fir_base);
 586                 goto out1;
 587         }
 588
 589         if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT,
 590                             driver_name)) {
 591                 IRDA_WARNING("%s: can't get sir_base of 0x%03x\n",
 592                              __FUNCTION__, sir_base);
 593                 goto out2;
 594         }
 595
 596         register_bank(fir_base, 3);
 597
 598         high    = inb(fir_base + IRCC_ID_HIGH);
 599         low     = inb(fir_base + IRCC_ID_LOW);
 600         chip    = inb(fir_base + IRCC_CHIP_ID);
 601         version = inb(fir_base + IRCC_VERSION);
 602         config  = inb(fir_base + IRCC_INTERFACE);
 603         dma     = config & IRCC_INTERFACE_DMA_MASK;
 604         irq     = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
 605
 606         if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) {
 607                 IRDA_WARNING("%s(), addr 0x%04x - no device found!\n",
 608                              __FUNCTION__, fir_base);
 609                 goto out3;
 610         }
 611         IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, "
 612                      "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n",
 613                      chip & 0x0f, version, fir_base, sir_base, dma, irq);
 614
 615         return 0;
 616
 617  out3:
 618         release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
 619  out2:
 620         release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
 621  out1:
 622         return -ENODEV;
 623 }
 624
 625 /*
 626  * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq)
 627  *
 628  *    Setup I/O
 629  *
 630  */
 631 static void smsc_ircc_setup_io(struct smsc_ircc_cb *self,
 632                                unsigned int fir_base, unsigned int sir_base,
 633                                u8 dma, u8 irq)
 634 {
 635         unsigned char config, chip_dma, chip_irq;
 636
 637         register_bank(fir_base, 3);
 638         config = inb(fir_base + IRCC_INTERFACE);
 639         chip_dma = config & IRCC_INTERFACE_DMA_MASK;
 640         chip_irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
 641
 642         self->io.fir_base  = fir_base;
 643         self->io.sir_base  = sir_base;
 644         self->io.fir_ext   = SMSC_IRCC2_FIR_CHIP_IO_EXTENT;
 645         self->io.sir_ext   = SMSC_IRCC2_SIR_CHIP_IO_EXTENT;
 646         self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE;
 647         self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED;
 648
 649         if (irq < 255) {
 650                 if (irq != chip_irq)
 651                         IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n",
 652                                      driver_name, chip_irq, irq);
 653                 self->io.irq = irq;
 654         } else
 655                 self->io.irq = chip_irq;
 656
 657         if (dma < 255) {
 658                 if (dma != chip_dma)
 659                         IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n",
 660                                      driver_name, chip_dma, dma);
 661                 self->io.dma = dma;
 662         } else
 663                 self->io.dma = chip_dma;
 664
 665 }
 666
 667 /*
 668  * Function smsc_ircc_setup_qos(self)
 669  *
 670  *    Setup qos
 671  *
 672  */
 673 static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self)
 674 {
 675         /* Initialize QoS for this device */
 676         irda_init_max_qos_capabilies(&self->qos);
 677
 678         self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
 679                 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8);
 680
 681         self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME;
 682         self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE;
 683         irda_qos_bits_to_value(&self->qos);
 684 }
 685
 686 /*
 687  * Function smsc_ircc_init_chip(self)
 688  *
 689  *    Init chip
 690  *
 691  */
 692 static void smsc_ircc_init_chip(struct smsc_ircc_cb *self)
 693 {
 694         int iobase = self->io.fir_base;
 695
 696         register_bank(iobase, 0);
 697         outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
 698         outb(0x00, iobase + IRCC_MASTER);
 699
 700         register_bank(iobase, 1);
 701         outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | IRCC_CFGA_IRDA_SIR_A),
 702              iobase + IRCC_SCE_CFGA);
 703
 704 #ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */
 705         outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM),
 706              iobase + IRCC_SCE_CFGB);
 707 #else
 708         outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
 709              iobase + IRCC_SCE_CFGB);
 710 #endif
 711         (void) inb(iobase + IRCC_FIFO_THRESHOLD);
 712         outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD);
 713
 714         register_bank(iobase, 4);
 715         outb((inb(iobase + IRCC_CONTROL) & 0x30), iobase + IRCC_CONTROL);
 716
 717         register_bank(iobase, 0);
 718         outb(0, iobase + IRCC_LCR_A);
 719
 720         smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
 721
 722         /* Power on device */
 723         outb(0x00, iobase + IRCC_MASTER);
 724 }
 725
 726 /*
 727  * Function smsc_ircc_net_ioctl (dev, rq, cmd)
 728  *
 729  *    Process IOCTL commands for this device
 730  *
 731  */
 732 static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 733 {
 734         struct if_irda_req *irq = (struct if_irda_req *) rq;
 735         struct smsc_ircc_cb *self;
 736         unsigned long flags;
 737         int ret = 0;
 738
 739         IRDA_ASSERT(dev != NULL, return -1;);
 740
 741         self = netdev_priv(dev);
 742
 743         IRDA_ASSERT(self != NULL, return -1;);
 744
 745         IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__, dev->name, cmd);
 746
 747         switch (cmd) {
 748         case SIOCSBANDWIDTH: /* Set bandwidth */
 749                 if (!capable(CAP_NET_ADMIN))
 750                         ret = -EPERM;
 751                 else {
 752                         /* Make sure we are the only one touching
 753                          * self->io.speed and the hardware - Jean II */
 754                         spin_lock_irqsave(&self->lock, flags);
 755                         smsc_ircc_change_speed(self, irq->ifr_baudrate);
 756                         spin_unlock_irqrestore(&self->lock, flags);
 757                 }
 758                 break;
 759         case SIOCSMEDIABUSY: /* Set media busy */
 760                 if (!capable(CAP_NET_ADMIN)) {
 761                         ret = -EPERM;
 762                         break;
 763                 }
 764
 765                 irda_device_set_media_busy(self->netdev, TRUE);
 766                 break;
 767         case SIOCGRECEIVING: /* Check if we are receiving right now */
 768                 irq->ifr_receiving = smsc_ircc_is_receiving(self);
 769                 break;
 770         #if 0
 771         case SIOCSDTRRTS:
 772                 if (!capable(CAP_NET_ADMIN)) {
 773                         ret = -EPERM;
 774                         break;
 775                 }
 776                 smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts);
 777                 break;
 778         #endif
 779         default:
 780                 ret = -EOPNOTSUPP;
 781         }
 782
 783         return ret;
 784 }
 785
 786 static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev)
 787 {
 788         struct smsc_ircc_cb *self = netdev_priv(dev);
 789
 790         return &self->stats;
 791 }
 792
 793 #if SMSC_IRCC2_C_NET_TIMEOUT
 794 /*
 795  * Function smsc_ircc_timeout (struct net_device *dev)
 796  *
 797  *    The networking timeout management.
 798  *
 799  */
 800
 801 static void smsc_ircc_timeout(struct net_device *dev)
 802 {
 803         struct smsc_ircc_cb *self = netdev_priv(dev);
 804         unsigned long flags;
 805
 806         IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n",
 807                      dev->name, self->io.speed);
 808         spin_lock_irqsave(&self->lock, flags);
 809         smsc_ircc_sir_start(self);
 810         smsc_ircc_change_speed(self, self->io.speed);
 811         dev->trans_start = jiffies;
 812         netif_wake_queue(dev);
 813         spin_unlock_irqrestore(&self->lock, flags);
 814 }
 815 #endif
 816
 817 /*
 818  * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev)
 819  *
 820  *    Transmits the current frame until FIFO is full, then
 821  *    waits until the next transmit interrupt, and continues until the
 822  *    frame is transmitted.
 823  */
 824 int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev)
 825 {
 826         struct smsc_ircc_cb *self;
 827         unsigned long flags;
 828         s32 speed;
 829
 830         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 831
 832         IRDA_ASSERT(dev != NULL, return 0;);
 833
 834         self = netdev_priv(dev);
 835         IRDA_ASSERT(self != NULL, return 0;);
 836
 837         netif_stop_queue(dev);
 838
 839         /* Make sure test of self->io.speed & speed change are atomic */
 840         spin_lock_irqsave(&self->lock, flags);
 841
 842         /* Check if we need to change the speed */
 843         speed = irda_get_next_speed(skb);
 844         if (speed != self->io.speed && speed != -1) {
 845                 /* Check for empty frame */
 846                 if (!skb->len) {
 847                         /*
 848                          * We send frames one by one in SIR mode (no
 849                          * pipelining), so at this point, if we were sending
 850                          * a previous frame, we just received the interrupt
 851                          * telling us it is finished (UART_IIR_THRI).
 852                          * Therefore, waiting for the transmitter to really
 853                          * finish draining the fifo won't take too long.
 854                          * And the interrupt handler is not expected to run.
 855                          * - Jean II */
 856                         smsc_ircc_sir_wait_hw_transmitter_finish(self);
 857                         smsc_ircc_change_speed(self, speed);
 858                         spin_unlock_irqrestore(&self->lock, flags);
 859                         dev_kfree_skb(skb);
 860                         return 0;
 861                 }
 862                 self->new_speed = speed;
 863         }
 864
 865         /* Init tx buffer */
 866         self->tx_buff.data = self->tx_buff.head;
 867
 868         /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
 869         self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
 870                                            self->tx_buff.truesize);
 871
 872         self->stats.tx_bytes += self->tx_buff.len;
 873
 874         /* Turn on transmit finished interrupt. Will fire immediately!  */
 875         outb(UART_IER_THRI, self->io.sir_base + UART_IER);
 876
 877         spin_unlock_irqrestore(&self->lock, flags);
 878
 879         dev_kfree_skb(skb);
 880
 881         return 0;
 882 }
 883
 884 /*
 885  * Function smsc_ircc_set_fir_speed (self, baud)
 886  *
 887  *    Change the speed of the device
 888  *
 889  */
 890 static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed)
 891 {
 892         int fir_base, ir_mode, ctrl, fast;
 893
 894         IRDA_ASSERT(self != NULL, return;);
 895         fir_base = self->io.fir_base;
 896
 897         self->io.speed = speed;
 898
 899         switch (speed) {
 900         default:
 901         case 576000:
 902                 ir_mode = IRCC_CFGA_IRDA_HDLC;
 903                 ctrl = IRCC_CRC;
 904                 fast = 0;
 905                 IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __FUNCTION__);
 906                 break;
 907         case 1152000:
 908                 ir_mode = IRCC_CFGA_IRDA_HDLC;
 909                 ctrl = IRCC_1152 | IRCC_CRC;
 910                 fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA;
 911                 IRDA_DEBUG(0, "%s(), handling baud of 1152000\n",
 912                            __FUNCTION__);
 913                 break;
 914         case 4000000:
 915                 ir_mode = IRCC_CFGA_IRDA_4PPM;
 916                 ctrl = IRCC_CRC;
 917                 fast = IRCC_LCR_A_FAST;
 918                 IRDA_DEBUG(0, "%s(), handling baud of 4000000\n",
 919                            __FUNCTION__);
 920                 break;
 921         }
 922         #if 0
 923         Now in tranceiver!
 924         /* This causes an interrupt */
 925         register_bank(fir_base, 0);
 926         outb((inb(fir_base + IRCC_LCR_A) &  0xbf) | fast, fir_base + IRCC_LCR_A);
 927         #endif
 928
 929         register_bank(fir_base, 1);
 930         outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | ir_mode), fir_base + IRCC_SCE_CFGA);
 931
 932         register_bank(fir_base, 4);
 933         outb((inb(fir_base + IRCC_CONTROL) & 0x30) | ctrl, fir_base + IRCC_CONTROL);
 934 }
 935
 936 /*
 937  * Function smsc_ircc_fir_start(self)
 938  *
 939  *    Change the speed of the device
 940  *
 941  */
 942 static void smsc_ircc_fir_start(struct smsc_ircc_cb *self)
 943 {
 944         struct net_device *dev;
 945         int fir_base;
 946
 947         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 948
 949         IRDA_ASSERT(self != NULL, return;);
 950         dev = self->netdev;
 951         IRDA_ASSERT(dev != NULL, return;);
 952
 953         fir_base = self->io.fir_base;
 954
 955         /* Reset everything */
 956
 957         /* Install FIR transmit handler */
 958         dev->hard_start_xmit = smsc_ircc_hard_xmit_fir;
 959
 960         /* Clear FIFO */
 961         outb(inb(fir_base + IRCC_LCR_A) | IRCC_LCR_A_FIFO_RESET, fir_base + IRCC_LCR_A);
 962
 963         /* Enable interrupt */
 964         /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/
 965
 966         register_bank(fir_base, 1);
 967
 968         /* Select the TX/RX interface */
 969 #ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */
 970         outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM),
 971              fir_base + IRCC_SCE_CFGB);
 972 #else
 973         outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
 974              fir_base + IRCC_SCE_CFGB);
 975 #endif
 976         (void) inb(fir_base + IRCC_FIFO_THRESHOLD);
 977
 978         /* Enable SCE interrupts */
 979         outb(0, fir_base + IRCC_MASTER);
 980         register_bank(fir_base, 0);
 981         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, fir_base + IRCC_IER);
 982         outb(IRCC_MASTER_INT_EN, fir_base + IRCC_MASTER);
 983 }
 984
 985 /*
 986  * Function smsc_ircc_fir_stop(self, baud)
 987  *
 988  *    Change the speed of the device
 989  *
 990  */
 991 static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self)
 992 {
 993         int fir_base;
 994
 995         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 996
 997         IRDA_ASSERT(self != NULL, return;);
 998
 999         fir_base = self->io.fir_base;
1000         register_bank(fir_base, 0);
1001         /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/
1002         outb(inb(fir_base + IRCC_LCR_B) & IRCC_LCR_B_SIP_ENABLE, fir_base + IRCC_LCR_B);
1003 }
1004
1005
1006 /*
1007  * Function smsc_ircc_change_speed(self, baud)
1008  *
1009  *    Change the speed of the device
1010  *
1011  * This function *must* be called with spinlock held, because it may
1012  * be called from the irq handler. - Jean II
1013  */
1014 static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed)
1015 {
1016         struct net_device *dev;
1017         int last_speed_was_sir;
1018
1019         IRDA_DEBUG(0, "%s() changing speed to: %d\n", __FUNCTION__, speed);
1020
1021         IRDA_ASSERT(self != NULL, return;);
1022         dev = self->netdev;
1023
1024         last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED;
1025
1026         #if 0
1027         /* Temp Hack */
1028         speed= 1152000;
1029         self->io.speed = speed;
1030         last_speed_was_sir = 0;
1031         smsc_ircc_fir_start(self);
1032         #endif
1033
1034         if (self->io.speed == 0)
1035                 smsc_ircc_sir_start(self);
1036
1037         #if 0
1038         if (!last_speed_was_sir) speed = self->io.speed;
1039         #endif
1040
1041         if (self->io.speed != speed)
1042                 smsc_ircc_set_transceiver_for_speed(self, speed);
1043
1044         self->io.speed = speed;
1045
1046         if (speed <= SMSC_IRCC2_MAX_SIR_SPEED) {
1047                 if (!last_speed_was_sir) {
1048                         smsc_ircc_fir_stop(self);
1049                         smsc_ircc_sir_start(self);
1050                 }
1051                 smsc_ircc_set_sir_speed(self, speed);
1052         } else {
1053                 if (last_speed_was_sir) {
1054                         #if SMSC_IRCC2_C_SIR_STOP
1055                         smsc_ircc_sir_stop(self);
1056                         #endif
1057                         smsc_ircc_fir_start(self);
1058                 }
1059                 smsc_ircc_set_fir_speed(self, speed);
1060
1061                 #if 0
1062                 self->tx_buff.len = 10;
1063                 self->tx_buff.data = self->tx_buff.head;
1064
1065                 smsc_ircc_dma_xmit(self, 4000);
1066                 #endif
1067                 /* Be ready for incoming frames */
1068                 smsc_ircc_dma_receive(self);
1069         }
1070
1071         netif_wake_queue(dev);
1072 }
1073
1074 /*
1075  * Function smsc_ircc_set_sir_speed (self, speed)
1076  *
1077  *    Set speed of IrDA port to specified baudrate
1078  *
1079  */
1080 void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, __u32 speed)
1081 {
1082         int iobase;
1083         int fcr;    /* FIFO control reg */
1084         int lcr;    /* Line control reg */
1085         int divisor;
1086
1087         IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __FUNCTION__, speed);
1088
1089         IRDA_ASSERT(self != NULL, return;);
1090         iobase = self->io.sir_base;
1091
1092         /* Update accounting for new speed */
1093         self->io.speed = speed;
1094
1095         /* Turn off interrupts */
1096         outb(0, iobase + UART_IER);
1097
1098         divisor = SMSC_IRCC2_MAX_SIR_SPEED / speed;
1099
1100         fcr = UART_FCR_ENABLE_FIFO;
1101
1102         /*
1103          * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1104          * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
1105          * about this timeout since it will always be fast enough.
1106          */
1107         fcr |= self->io.speed < 38400 ?
1108                 UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14;
1109
1110         /* IrDA ports use 8N1 */
1111         lcr = UART_LCR_WLEN8;
1112
1113         outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */
1114         outb(divisor & 0xff,      iobase + UART_DLL); /* Set speed */
1115         outb(divisor >> 8,        iobase + UART_DLM);
1116         outb(lcr,                 iobase + UART_LCR); /* Set 8N1 */
1117         outb(fcr,                 iobase + UART_FCR); /* Enable FIFO's */
1118
1119         /* Turn on interrups */
1120         outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
1121
1122         IRDA_DEBUG(2, "%s() speed changed to: %d\n", __FUNCTION__, speed);
1123 }
1124
1125
1126 /*
1127  * Function smsc_ircc_hard_xmit_fir (skb, dev)
1128  *
1129  *    Transmit the frame!
1130  *
1131  */
1132 static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev)
1133 {
1134         struct smsc_ircc_cb *self;
1135         unsigned long flags;
1136         s32 speed;
1137         int mtt;
1138
1139         IRDA_ASSERT(dev != NULL, return 0;);
1140         self = netdev_priv(dev);
1141         IRDA_ASSERT(self != NULL, return 0;);
1142
1143         netif_stop_queue(dev);
1144
1145         /* Make sure test of self->io.speed & speed change are atomic */
1146         spin_lock_irqsave(&self->lock, flags);
1147
1148         /* Check if we need to change the speed after this frame */
1149         speed = irda_get_next_speed(skb);
1150         if (speed != self->io.speed && speed != -1) {
1151                 /* Check for empty frame */
1152                 if (!skb->len) {
1153                         /* Note : you should make sure that speed changes
1154                          * are not going to corrupt any outgoing frame.
1155                          * Look at nsc-ircc for the gory details - Jean II */
1156                         smsc_ircc_change_speed(self, speed);
1157                         spin_unlock_irqrestore(&self->lock, flags);
1158                         dev_kfree_skb(skb);
1159                         return 0;
1160                 }
1161
1162                 self->new_speed = speed;
1163         }
1164
1165         skb_copy_from_linear_data(skb, self->tx_buff.head, skb->len);
1166
1167         self->tx_buff.len = skb->len;
1168         self->tx_buff.data = self->tx_buff.head;
1169
1170         mtt = irda_get_mtt(skb);
1171         if (mtt) {
1172                 int bofs;
1173
1174                 /*
1175                  * Compute how many BOFs (STA or PA's) we need to waste the
1176                  * min turn time given the speed of the link.
1177                  */
1178                 bofs = mtt * (self->io.speed / 1000) / 8000;
1179                 if (bofs > 4095)
1180                         bofs = 4095;
1181
1182                 smsc_ircc_dma_xmit(self, bofs);
1183         } else {
1184                 /* Transmit frame */
1185                 smsc_ircc_dma_xmit(self, 0);
1186         }
1187
1188         spin_unlock_irqrestore(&self->lock, flags);
1189         dev_kfree_skb(skb);
1190
1191         return 0;
1192 }
1193
1194 /*
1195  * Function smsc_ircc_dma_xmit (self, bofs)
1196  *
1197  *    Transmit data using DMA
1198  *
1199  */
1200 static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs)
1201 {
1202         int iobase = self->io.fir_base;
1203         u8 ctrl;
1204
1205         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1206 #if 1
1207         /* Disable Rx */
1208         register_bank(iobase, 0);
1209         outb(0x00, iobase + IRCC_LCR_B);
1210 #endif
1211         register_bank(iobase, 1);
1212         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1213              iobase + IRCC_SCE_CFGB);
1214
1215         self->io.direction = IO_XMIT;
1216
1217         /* Set BOF additional count for generating the min turn time */
1218         register_bank(iobase, 4);
1219         outb(bofs & 0xff, iobase + IRCC_BOF_COUNT_LO);
1220         ctrl = inb(iobase + IRCC_CONTROL) & 0xf0;
1221         outb(ctrl | ((bofs >> 8) & 0x0f), iobase + IRCC_BOF_COUNT_HI);
1222
1223         /* Set max Tx frame size */
1224         outb(self->tx_buff.len >> 8, iobase + IRCC_TX_SIZE_HI);
1225         outb(self->tx_buff.len & 0xff, iobase + IRCC_TX_SIZE_LO);
1226
1227         /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/
1228
1229         /* Enable burst mode chip Tx DMA */
1230         register_bank(iobase, 1);
1231         outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE |
1232              IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB);
1233
1234         /* Setup DMA controller (must be done after enabling chip DMA) */
1235         irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len,
1236                        DMA_TX_MODE);
1237
1238         /* Enable interrupt */
1239
1240         register_bank(iobase, 0);
1241         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1242         outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER);
1243
1244         /* Enable transmit */
1245         outb(IRCC_LCR_B_SCE_TRANSMIT | IRCC_LCR_B_SIP_ENABLE, iobase + IRCC_LCR_B);
1246 }
1247
1248 /*
1249  * Function smsc_ircc_dma_xmit_complete (self)
1250  *
1251  *    The transfer of a frame in finished. This function will only be called
1252  *    by the interrupt handler
1253  *
1254  */
1255 static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self)
1256 {
1257         int iobase = self->io.fir_base;
1258
1259         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1260 #if 0
1261         /* Disable Tx */
1262         register_bank(iobase, 0);
1263         outb(0x00, iobase + IRCC_LCR_B);
1264 #endif
1265         register_bank(iobase, 1);
1266         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1267              iobase + IRCC_SCE_CFGB);
1268
1269         /* Check for underrun! */
1270         register_bank(iobase, 0);
1271         if (inb(iobase + IRCC_LSR) & IRCC_LSR_UNDERRUN) {
1272                 self->stats.tx_errors++;
1273                 self->stats.tx_fifo_errors++;
1274
1275                 /* Reset error condition */
1276                 register_bank(iobase, 0);
1277                 outb(IRCC_MASTER_ERROR_RESET, iobase + IRCC_MASTER);
1278                 outb(0x00, iobase + IRCC_MASTER);
1279         } else {
1280                 self->stats.tx_packets++;
1281                 self->stats.tx_bytes += self->tx_buff.len;
1282         }
1283
1284         /* Check if it's time to change the speed */
1285         if (self->new_speed) {
1286                 smsc_ircc_change_speed(self, self->new_speed);
1287                 self->new_speed = 0;
1288         }
1289
1290         netif_wake_queue(self->netdev);
1291 }
1292
1293 /*
1294  * Function smsc_ircc_dma_receive(self)
1295  *
1296  *    Get ready for receiving a frame. The device will initiate a DMA
1297  *    if it starts to receive a frame.
1298  *
1299  */
1300 static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self)
1301 {
1302         int iobase = self->io.fir_base;
1303 #if 0
1304         /* Turn off chip DMA */
1305         register_bank(iobase, 1);
1306         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1307              iobase + IRCC_SCE_CFGB);
1308 #endif
1309
1310         /* Disable Tx */
1311         register_bank(iobase, 0);
1312         outb(0x00, iobase + IRCC_LCR_B);
1313
1314         /* Turn off chip DMA */
1315         register_bank(iobase, 1);
1316         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1317              iobase + IRCC_SCE_CFGB);
1318
1319         self->io.direction = IO_RECV;
1320         self->rx_buff.data = self->rx_buff.head;
1321
1322         /* Set max Rx frame size */
1323         register_bank(iobase, 4);
1324         outb((2050 >> 8) & 0x0f, iobase + IRCC_RX_SIZE_HI);
1325         outb(2050 & 0xff, iobase + IRCC_RX_SIZE_LO);
1326
1327         /* Setup DMA controller */
1328         irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1329                        DMA_RX_MODE);
1330
1331         /* Enable burst mode chip Rx DMA */
1332         register_bank(iobase, 1);
1333         outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE |
1334              IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB);
1335
1336         /* Enable interrupt */
1337         register_bank(iobase, 0);
1338         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1339         outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER);
1340
1341         /* Enable receiver */
1342         register_bank(iobase, 0);
1343         outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE,
1344              iobase + IRCC_LCR_B);
1345
1346         return 0;
1347 }
1348
1349 /*
1350  * Function smsc_ircc_dma_receive_complete(self)
1351  *
1352  *    Finished with receiving frames
1353  *
1354  */
1355 static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self)
1356 {
1357         struct sk_buff *skb;
1358         int len, msgcnt, lsr;
1359         int iobase = self->io.fir_base;
1360
1361         register_bank(iobase, 0);
1362
1363         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1364 #if 0
1365         /* Disable Rx */
1366         register_bank(iobase, 0);
1367         outb(0x00, iobase + IRCC_LCR_B);
1368 #endif
1369         register_bank(iobase, 0);
1370         outb(inb(iobase + IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase + IRCC_LSAR);
1371         lsr= inb(iobase + IRCC_LSR);
1372         msgcnt = inb(iobase + IRCC_LCR_B) & 0x08;
1373
1374         IRDA_DEBUG(2, "%s: dma count = %d\n", __FUNCTION__,
1375                    get_dma_residue(self->io.dma));
1376
1377         len = self->rx_buff.truesize - get_dma_residue(self->io.dma);
1378
1379         /* Look for errors */
1380         if (lsr & (IRCC_LSR_FRAME_ERROR | IRCC_LSR_CRC_ERROR | IRCC_LSR_SIZE_ERROR)) {
1381                 self->stats.rx_errors++;
1382                 if (lsr & IRCC_LSR_FRAME_ERROR)
1383                         self->stats.rx_frame_errors++;
1384                 if (lsr & IRCC_LSR_CRC_ERROR)
1385                         self->stats.rx_crc_errors++;
1386                 if (lsr & IRCC_LSR_SIZE_ERROR)
1387                         self->stats.rx_length_errors++;
1388                 if (lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN))
1389                         self->stats.rx_length_errors++;
1390                 return;
1391         }
1392
1393         /* Remove CRC */
1394         len -= self->io.speed < 4000000 ? 2 : 4;
1395
1396         if (len < 2 || len > 2050) {
1397                 IRDA_WARNING("%s(), bogus len=%d\n", __FUNCTION__, len);
1398                 return;
1399         }
1400         IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __FUNCTION__, msgcnt, len);
1401
1402         skb = dev_alloc_skb(len + 1);
1403         if (!skb) {
1404                 IRDA_WARNING("%s(), memory squeeze, dropping frame.\n",
1405                              __FUNCTION__);
1406                 return;
1407         }
1408         /* Make sure IP header gets aligned */
1409         skb_reserve(skb, 1);
1410
1411         memcpy(skb_put(skb, len), self->rx_buff.data, len);
1412         self->stats.rx_packets++;
1413         self->stats.rx_bytes += len;
1414
1415         skb->dev = self->netdev;
1416         skb_reset_mac_header(skb);
1417         skb->protocol = htons(ETH_P_IRDA);
1418         netif_rx(skb);
1419 }
1420
1421 /*
1422  * Function smsc_ircc_sir_receive (self)
1423  *
1424  *    Receive one frame from the infrared port
1425  *
1426  */
1427 static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self)
1428 {
1429         int boguscount = 0;
1430         int iobase;
1431
1432         IRDA_ASSERT(self != NULL, return;);
1433
1434         iobase = self->io.sir_base;
1435
1436         /*
1437          * Receive all characters in Rx FIFO, unwrap and unstuff them.
1438          * async_unwrap_char will deliver all found frames
1439          */
1440         do {
1441                 async_unwrap_char(self->netdev, &self->stats, &self->rx_buff,
1442                                   inb(iobase + UART_RX));
1443
1444                 /* Make sure we don't stay here to long */
1445                 if (boguscount++ > 32) {
1446                         IRDA_DEBUG(2, "%s(), breaking!\n", __FUNCTION__);
1447                         break;
1448                 }
1449         } while (inb(iobase + UART_LSR) & UART_LSR_DR);
1450 }
1451
1452
1453 /*
1454  * Function smsc_ircc_interrupt (irq, dev_id, regs)
1455  *
1456  *    An interrupt from the chip has arrived. Time to do some work
1457  *
1458  */
1459 static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id)
1460 {
1461         struct net_device *dev = (struct net_device *) dev_id;
1462         struct smsc_ircc_cb *self;
1463         int iobase, iir, lcra, lsr;
1464         irqreturn_t ret = IRQ_NONE;
1465
1466         if (dev == NULL) {
1467                 printk(KERN_WARNING "%s: irq %d for unknown device.\n",
1468                        driver_name, irq);
1469                 goto irq_ret;
1470         }
1471
1472         self = netdev_priv(dev);
1473         IRDA_ASSERT(self != NULL, return IRQ_NONE;);
1474
1475         /* Serialise the interrupt handler in various CPUs, stop Tx path */
1476         spin_lock(&self->lock);
1477
1478         /* Check if we should use the SIR interrupt handler */
1479         if (self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED) {
1480                 ret = smsc_ircc_interrupt_sir(dev);
1481                 goto irq_ret_unlock;
1482         }
1483
1484         iobase = self->io.fir_base;
1485
1486         register_bank(iobase, 0);
1487         iir = inb(iobase + IRCC_IIR);
1488         if (iir == 0)
1489                 goto irq_ret_unlock;
1490         ret = IRQ_HANDLED;
1491
1492         /* Disable interrupts */
1493         outb(0, iobase + IRCC_IER);
1494         lcra = inb(iobase + IRCC_LCR_A);
1495         lsr = inb(iobase + IRCC_LSR);
1496
1497         IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __FUNCTION__, iir);
1498
1499         if (iir & IRCC_IIR_EOM) {
1500                 if (self->io.direction == IO_RECV)
1501                         smsc_ircc_dma_receive_complete(self);
1502                 else
1503                         smsc_ircc_dma_xmit_complete(self);
1504
1505                 smsc_ircc_dma_receive(self);
1506         }
1507
1508         if (iir & IRCC_IIR_ACTIVE_FRAME) {
1509                 /*printk(KERN_WARNING "%s(): Active Frame\n", __FUNCTION__);*/
1510         }
1511
1512         /* Enable interrupts again */
1513
1514         register_bank(iobase, 0);
1515         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1516
1517  irq_ret_unlock:
1518         spin_unlock(&self->lock);
1519  irq_ret:
1520         return ret;
1521 }
1522
1523 /*
1524  * Function irport_interrupt_sir (irq, dev_id)
1525  *
1526  *    Interrupt handler for SIR modes
1527  */
1528 static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev)
1529 {
1530         struct smsc_ircc_cb *self = netdev_priv(dev);
1531         int boguscount = 0;
1532         int iobase;
1533         int iir, lsr;
1534
1535         /* Already locked comming here in smsc_ircc_interrupt() */
1536         /*spin_lock(&self->lock);*/
1537
1538         iobase = self->io.sir_base;
1539
1540         iir = inb(iobase + UART_IIR) & UART_IIR_ID;
1541         if (iir == 0)
1542                 return IRQ_NONE;
1543         while (iir) {
1544                 /* Clear interrupt */
1545                 lsr = inb(iobase + UART_LSR);
1546
1547                 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n",
1548                             __FUNCTION__, iir, lsr, iobase);
1549
1550                 switch (iir) {
1551                 case UART_IIR_RLSI:
1552                         IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__);
1553                         break;
1554                 case UART_IIR_RDI:
1555                         /* Receive interrupt */
1556                         smsc_ircc_sir_receive(self);
1557                         break;
1558                 case UART_IIR_THRI:
1559                         if (lsr & UART_LSR_THRE)
1560                                 /* Transmitter ready for data */
1561                                 smsc_ircc_sir_write_wakeup(self);
1562                         break;
1563                 default:
1564                         IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n",
1565                                    __FUNCTION__, iir);
1566                         break;
1567                 }
1568
1569                 /* Make sure we don't stay here to long */
1570                 if (boguscount++ > 100)
1571                         break;
1572
1573                 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
1574         }
1575         /*spin_unlock(&self->lock);*/
1576         return IRQ_HANDLED;
1577 }
1578
1579
1580 #if 0 /* unused */
1581 /*
1582  * Function ircc_is_receiving (self)
1583  *
1584  *    Return TRUE is we are currently receiving a frame
1585  *
1586  */
1587 static int ircc_is_receiving(struct smsc_ircc_cb *self)
1588 {
1589         int status = FALSE;
1590         /* int iobase; */
1591
1592         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1593
1594         IRDA_ASSERT(self != NULL, return FALSE;);
1595
1596         IRDA_DEBUG(0, "%s: dma count = %d\n", __FUNCTION__,
1597                    get_dma_residue(self->io.dma));
1598
1599         status = (self->rx_buff.state != OUTSIDE_FRAME);
1600
1601         return status;
1602 }
1603 #endif /* unused */
1604
1605 static int smsc_ircc_request_irq(struct smsc_ircc_cb *self)
1606 {
1607         int error;
1608
1609         error = request_irq(self->io.irq, smsc_ircc_interrupt, 0,
1610                             self->netdev->name, self->netdev);
1611         if (error)
1612                 IRDA_DEBUG(0, "%s(), unable to allocate irq=%d, err=%d\n",
1613                            __FUNCTION__, self->io.irq, error);
1614
1615         return error;
1616 }
1617
1618 static void smsc_ircc_start_interrupts(struct smsc_ircc_cb *self)
1619 {
1620         unsigned long flags;
1621
1622         spin_lock_irqsave(&self->lock, flags);
1623
1624         self->io.speed = 0;
1625         smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
1626
1627         spin_unlock_irqrestore(&self->lock, flags);
1628 }
1629
1630 static void smsc_ircc_stop_interrupts(struct smsc_ircc_cb *self)
1631 {
1632         int iobase = self->io.fir_base;
1633         unsigned long flags;
1634
1635         spin_lock_irqsave(&self->lock, flags);
1636
1637         register_bank(iobase, 0);
1638         outb(0, iobase + IRCC_IER);
1639         outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
1640         outb(0x00, iobase + IRCC_MASTER);
1641
1642         spin_unlock_irqrestore(&self->lock, flags);
1643 }
1644
1645
1646 /*
1647  * Function smsc_ircc_net_open (dev)
1648  *
1649  *    Start the device
1650  *
1651  */
1652 static int smsc_ircc_net_open(struct net_device *dev)
1653 {
1654         struct smsc_ircc_cb *self;
1655         char hwname[16];
1656
1657         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1658
1659         IRDA_ASSERT(dev != NULL, return -1;);
1660         self = netdev_priv(dev);
1661         IRDA_ASSERT(self != NULL, return 0;);
1662
1663         if (self->io.suspended) {
1664                 IRDA_DEBUG(0, "%s(), device is suspended\n", __FUNCTION__);
1665                 return -EAGAIN;
1666         }
1667
1668         if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name,
1669                         (void *) dev)) {
1670                 IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n",
1671                            __FUNCTION__, self->io.irq);
1672                 return -EAGAIN;
1673         }
1674
1675         smsc_ircc_start_interrupts(self);
1676
1677         /* Give self a hardware name */
1678         /* It would be cool to offer the chip revision here - Jean II */
1679         sprintf(hwname, "SMSC @ 0x%03x", self->io.fir_base);
1680
1681         /*
1682          * Open new IrLAP layer instance, now that everything should be
1683          * initialized properly
1684          */
1685         self->irlap = irlap_open(dev, &self->qos, hwname);
1686
1687         /*
1688          * Always allocate the DMA channel after the IRQ,
1689          * and clean up on failure.
1690          */
1691         if (request_dma(self->io.dma, dev->name)) {
1692                 smsc_ircc_net_close(dev);
1693
1694                 IRDA_WARNING("%s(), unable to allocate DMA=%d\n",
1695                              __FUNCTION__, self->io.dma);
1696                 return -EAGAIN;
1697         }
1698
1699         netif_start_queue(dev);
1700
1701         return 0;
1702 }
1703
1704 /*
1705  * Function smsc_ircc_net_close (dev)
1706  *
1707  *    Stop the device
1708  *
1709  */
1710 static int smsc_ircc_net_close(struct net_device *dev)
1711 {
1712         struct smsc_ircc_cb *self;
1713
1714         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1715
1716         IRDA_ASSERT(dev != NULL, return -1;);
1717         self = netdev_priv(dev);
1718         IRDA_ASSERT(self != NULL, return 0;);
1719
1720         /* Stop device */
1721         netif_stop_queue(dev);
1722
1723         /* Stop and remove instance of IrLAP */
1724         if (self->irlap)
1725                 irlap_close(self->irlap);
1726         self->irlap = NULL;
1727
1728         smsc_ircc_stop_interrupts(self);
1729
1730         /* if we are called from smsc_ircc_resume we don't have IRQ reserved */
1731         if (!self->io.suspended)
1732                 free_irq(self->io.irq, dev);
1733
1734         disable_dma(self->io.dma);
1735         free_dma(self->io.dma);
1736
1737         return 0;
1738 }
1739
1740 static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state)
1741 {
1742         struct smsc_ircc_cb *self = platform_get_drvdata(dev);
1743
1744         if (!self->io.suspended) {
1745                 IRDA_DEBUG(1, "%s, Suspending\n", driver_name);
1746
1747                 rtnl_lock();
1748                 if (netif_running(self->netdev)) {
1749                         netif_device_detach(self->netdev);
1750                         smsc_ircc_stop_interrupts(self);
1751                         free_irq(self->io.irq, self->netdev);
1752                         disable_dma(self->io.dma);
1753                 }
1754                 self->io.suspended = 1;
1755                 rtnl_unlock();
1756         }
1757
1758         return 0;
1759 }
1760
1761 static int smsc_ircc_resume(struct platform_device *dev)
1762 {
1763         struct smsc_ircc_cb *self = platform_get_drvdata(dev);
1764
1765         if (self->io.suspended) {
1766                 IRDA_DEBUG(1, "%s, Waking up\n", driver_name);
1767
1768                 rtnl_lock();
1769                 smsc_ircc_init_chip(self);
1770                 if (netif_running(self->netdev)) {
1771                         if (smsc_ircc_request_irq(self)) {
1772                                 /*
1773                                  * Don't fail resume process, just kill this
1774                                  * network interface
1775                                  */
1776                                 unregister_netdevice(self->netdev);
1777                         } else {
1778                                 enable_dma(self->io.dma);
1779                                 smsc_ircc_start_interrupts(self);
1780                                 netif_device_attach(self->netdev);
1781                         }
1782                 }
1783                 self->io.suspended = 0;
1784                 rtnl_unlock();
1785         }
1786         return 0;
1787 }
1788
1789 /*
1790  * Function smsc_ircc_close (self)
1791  *
1792  *    Close driver instance
1793  *
1794  */
1795 static int __exit smsc_ircc_close(struct smsc_ircc_cb *self)
1796 {
1797         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1798
1799         IRDA_ASSERT(self != NULL, return -1;);
1800
1801         platform_device_unregister(self->pldev);
1802
1803         /* Remove netdevice */
1804         unregister_netdev(self->netdev);
1805
1806         smsc_ircc_stop_interrupts(self);
1807
1808         /* Release the PORTS that this driver is using */
1809         IRDA_DEBUG(0, "%s(), releasing 0x%03x\n",  __FUNCTION__,
1810                    self->io.fir_base);
1811
1812         release_region(self->io.fir_base, self->io.fir_ext);
1813
1814         IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__,
1815                    self->io.sir_base);
1816
1817         release_region(self->io.sir_base, self->io.sir_ext);
1818
1819         if (self->tx_buff.head)
1820                 dma_free_coherent(NULL, self->tx_buff.truesize,
1821                                   self->tx_buff.head, self->tx_buff_dma);
1822
1823         if (self->rx_buff.head)
1824                 dma_free_coherent(NULL, self->rx_buff.truesize,
1825                                   self->rx_buff.head, self->rx_buff_dma);
1826
1827         free_netdev(self->netdev);
1828
1829         return 0;
1830 }
1831
1832 static void __exit smsc_ircc_cleanup(void)
1833 {
1834         int i;
1835
1836         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1837
1838         for (i = 0; i < 2; i++) {
1839                 if (dev_self[i])
1840                         smsc_ircc_close(dev_self[i]);
1841         }
1842
1843         platform_driver_unregister(&smsc_ircc_driver);
1844 }
1845
1846 /*
1847  *      Start SIR operations
1848  *
1849  * This function *must* be called with spinlock held, because it may
1850  * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II
1851  */
1852 void smsc_ircc_sir_start(struct smsc_ircc_cb *self)
1853 {
1854         struct net_device *dev;
1855         int fir_base, sir_base;
1856
1857         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1858
1859         IRDA_ASSERT(self != NULL, return;);
1860         dev = self->netdev;
1861         IRDA_ASSERT(dev != NULL, return;);
1862         dev->hard_start_xmit = &smsc_ircc_hard_xmit_sir;
1863
1864         fir_base = self->io.fir_base;
1865         sir_base = self->io.sir_base;
1866
1867         /* Reset everything */
1868         outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);
1869
1870         #if SMSC_IRCC2_C_SIR_STOP
1871         /*smsc_ircc_sir_stop(self);*/
1872         #endif
1873
1874         register_bank(fir_base, 1);
1875         outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | IRCC_CFGA_IRDA_SIR_A), fir_base + IRCC_SCE_CFGA);
1876
1877         /* Initialize UART */
1878         outb(UART_LCR_WLEN8, sir_base + UART_LCR);  /* Reset DLAB */
1879         outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), sir_base + UART_MCR);
1880
1881         /* Turn on interrups */
1882         outb(UART_IER_RLSI | UART_IER_RDI |UART_IER_THRI, sir_base + UART_IER);
1883
1884         IRDA_DEBUG(3, "%s() - exit\n", __FUNCTION__);
1885
1886         outb(0x00, fir_base + IRCC_MASTER);
1887 }
1888
1889 #if SMSC_IRCC2_C_SIR_STOP
1890 void smsc_ircc_sir_stop(struct smsc_ircc_cb *self)
1891 {
1892         int iobase;
1893
1894         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1895         iobase = self->io.sir_base;
1896
1897         /* Reset UART */
1898         outb(0, iobase + UART_MCR);
1899
1900         /* Turn off interrupts */
1901         outb(0, iobase + UART_IER);
1902 }
1903 #endif
1904
1905 /*
1906  * Function smsc_sir_write_wakeup (self)
1907  *
1908  *    Called by the SIR interrupt handler when there's room for more data.
1909  *    If we have more packets to send, we send them here.
1910  *
1911  */
1912 static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self)
1913 {
1914         int actual = 0;
1915         int iobase;
1916         int fcr;
1917
1918         IRDA_ASSERT(self != NULL, return;);
1919
1920         IRDA_DEBUG(4, "%s\n", __FUNCTION__);
1921
1922         iobase = self->io.sir_base;
1923
1924         /* Finished with frame?  */
1925         if (self->tx_buff.len > 0)  {
1926                 /* Write data left in transmit buffer */
1927                 actual = smsc_ircc_sir_write(iobase, self->io.fifo_size,
1928                                       self->tx_buff.data, self->tx_buff.len);
1929                 self->tx_buff.data += actual;
1930                 self->tx_buff.len  -= actual;
1931         } else {
1932
1933         /*if (self->tx_buff.len ==0)  {*/
1934
1935                 /*
1936                  *  Now serial buffer is almost free & we can start
1937                  *  transmission of another packet. But first we must check
1938                  *  if we need to change the speed of the hardware
1939                  */
1940                 if (self->new_speed) {
1941                         IRDA_DEBUG(5, "%s(), Changing speed to %d.\n",
1942                                    __FUNCTION__, self->new_speed);
1943                         smsc_ircc_sir_wait_hw_transmitter_finish(self);
1944                         smsc_ircc_change_speed(self, self->new_speed);
1945                         self->new_speed = 0;
1946                 } else {
1947                         /* Tell network layer that we want more frames */
1948                         netif_wake_queue(self->netdev);
1949                 }
1950                 self->stats.tx_packets++;
1951
1952                 if (self->io.speed <= 115200) {
1953                         /*
1954                          * Reset Rx FIFO to make sure that all reflected transmit data
1955                          * is discarded. This is needed for half duplex operation
1956                          */
1957                         fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR;
1958                         fcr |= self->io.speed < 38400 ?
1959                                         UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14;
1960
1961                         outb(fcr, iobase + UART_FCR);
1962
1963                         /* Turn on receive interrupts */
1964                         outb(UART_IER_RDI, iobase + UART_IER);
1965                 }
1966         }
1967 }
1968
1969 /*
1970  * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len)
1971  *
1972  *    Fill Tx FIFO with transmit data
1973  *
1974  */
1975 static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
1976 {
1977         int actual = 0;
1978
1979         /* Tx FIFO should be empty! */
1980         if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) {
1981                 IRDA_WARNING("%s(), failed, fifo not empty!\n", __FUNCTION__);
1982                 return 0;
1983         }
1984
1985         /* Fill FIFO with current frame */
1986         while (fifo_size-- > 0 && actual < len) {
1987                 /* Transmit next byte */
1988                 outb(buf[actual], iobase + UART_TX);
1989                 actual++;
1990         }
1991         return actual;
1992 }
1993
1994 /*
1995  * Function smsc_ircc_is_receiving (self)
1996  *
1997  *    Returns true is we are currently receiving data
1998  *
1999  */
2000 static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self)
2001 {
2002         return (self->rx_buff.state != OUTSIDE_FRAME);
2003 }
2004
2005
2006 /*
2007  * Function smsc_ircc_probe_transceiver(self)
2008  *
2009  *    Tries to find the used Transceiver
2010  *
2011  */
2012 static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self)
2013 {
2014         unsigned int    i;
2015
2016         IRDA_ASSERT(self != NULL, return;);
2017
2018         for (i = 0; smsc_transceivers[i].name != NULL; i++)
2019                 if (smsc_transceivers[i].probe(self->io.fir_base)) {
2020                         IRDA_MESSAGE(" %s transceiver found\n",
2021                                      smsc_transceivers[i].name);
2022                         self->transceiver= i + 1;
2023                         return;
2024                 }
2025
2026         IRDA_MESSAGE("No transceiver found. Defaulting to %s\n",
2027                      smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name);
2028
2029         self->transceiver = SMSC_IRCC2_C_DEFAULT_TRANSCEIVER;
2030 }
2031
2032
2033 /*
2034  * Function smsc_ircc_set_transceiver_for_speed(self, speed)
2035  *
2036  *    Set the transceiver according to the speed
2037  *
2038  */
2039 static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed)
2040 {
2041         unsigned int trx;
2042
2043         trx = self->transceiver;
2044         if (trx > 0)
2045                 smsc_transceivers[trx - 1].set_for_speed(self->io.fir_base, speed);
2046 }
2047
2048 /*
2049  * Function smsc_ircc_wait_hw_transmitter_finish ()
2050  *
2051  *    Wait for the real end of HW transmission
2052  *
2053  * The UART is a strict FIFO, and we get called only when we have finished
2054  * pushing data to the FIFO, so the maximum amount of time we must wait
2055  * is only for the FIFO to drain out.
2056  *
2057  * We use a simple calibrated loop. We may need to adjust the loop
2058  * delay (udelay) to balance I/O traffic and latency. And we also need to
2059  * adjust the maximum timeout.
2060  * It would probably be better to wait for the proper interrupt,
2061  * but it doesn't seem to be available.
2062  *
2063  * We can't use jiffies or kernel timers because :
2064  * 1) We are called from the interrupt handler, which disable softirqs,
2065  * so jiffies won't be increased
2066  * 2) Jiffies granularity is usually very coarse (10ms), and we don't
2067  * want to wait that long to detect stuck hardware.
2068  * Jean II
2069  */
2070
2071 static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self)
2072 {
2073         int iobase = self->io.sir_base;
2074         int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US;
2075
2076         /* Calibrated busy loop */
2077         while (count-- > 0 && !(inb(iobase + UART_LSR) & UART_LSR_TEMT))
2078                 udelay(1);
2079
2080         if (count == 0)
2081                 IRDA_DEBUG(0, "%s(): stuck transmitter\n", __FUNCTION__);
2082 }
2083
2084
2085 /* PROBING
2086  *
2087  * REVISIT we can be told about the device by PNP, and should use that info
2088  * instead of probing hardware and creating a platform_device ...
2089  */
2090
2091 static int __init smsc_ircc_look_for_chips(void)
2092 {
2093         struct smsc_chip_address *address;
2094         char *type;
2095         unsigned int cfg_base, found;
2096
2097         found = 0;
2098         address = possible_addresses;
2099
2100         while (address->cfg_base) {
2101                 cfg_base = address->cfg_base;
2102
2103                 /*printk(KERN_WARNING "%s(): probing: 0x%02x for: 0x%02x\n", __FUNCTION__, cfg_base, address->type);*/
2104
2105                 if (address->type & SMSCSIO_TYPE_FDC) {
2106                         type = "FDC";
2107                         if (address->type & SMSCSIO_TYPE_FLAT)
2108                                 if (!smsc_superio_flat(fdc_chips_flat, cfg_base, type))
2109                                         found++;
2110
2111                         if (address->type & SMSCSIO_TYPE_PAGED)
2112                                 if (!smsc_superio_paged(fdc_chips_paged, cfg_base, type))
2113                                         found++;
2114                 }
2115                 if (address->type & SMSCSIO_TYPE_LPC) {
2116                         type = "LPC";
2117                         if (address->type & SMSCSIO_TYPE_FLAT)
2118                                 if (!smsc_superio_flat(lpc_chips_flat, cfg_base, type))
2119                                         found++;
2120
2121                         if (address->type & SMSCSIO_TYPE_PAGED)
2122                                 if (!smsc_superio_paged(lpc_chips_paged, cfg_base, type))
2123                                         found++;
2124                 }
2125                 address++;
2126         }
2127         return found;
2128 }
2129
2130 /*
2131  * Function smsc_superio_flat (chip, base, type)
2132  *
2133  *    Try to get configuration of a smc SuperIO chip with flat register model
2134  *
2135  */
2136 static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfgbase, char *type)
2137 {
2138         unsigned short firbase, sirbase;
2139         u8 mode, dma, irq;
2140         int ret = -ENODEV;
2141
2142         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
2143
2144         if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type) == NULL)
2145                 return ret;
2146
2147         outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase);
2148         mode = inb(cfgbase + 1);
2149
2150         /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __FUNCTION__, mode);*/
2151
2152         if (!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA))
2153                 IRDA_WARNING("%s(): IrDA not enabled\n", __FUNCTION__);
2154
2155         outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase);
2156         sirbase = inb(cfgbase + 1) << 2;
2157
2158         /* FIR iobase */
2159         outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase);
2160         firbase = inb(cfgbase + 1) << 3;
2161
2162         /* DMA */
2163         outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase);
2164         dma = inb(cfgbase + 1) & SMSCSIOFLAT_FIRDMASELECT_MASK;
2165
2166         /* IRQ */
2167         outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase);
2168         irq = inb(cfgbase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK;
2169
2170         IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __FUNCTION__, firbase, sirbase, dma, irq, mode);
2171
2172         if (firbase && smsc_ircc_open(firbase, sirbase, dma, irq) == 0)
2173                 ret = 0;
2174
2175         /* Exit configuration */
2176         outb(SMSCSIO_CFGEXITKEY, cfgbase);
2177
2178         return ret;
2179 }
2180
2181 /*
2182  * Function smsc_superio_paged (chip, base, type)
2183  *
2184  *    Try  to get configuration of a smc SuperIO chip with paged register model
2185  *
2186  */
2187 static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type)
2188 {
2189         unsigned short fir_io, sir_io;
2190         int ret = -ENODEV;
2191
2192         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
2193
2194         if (smsc_ircc_probe(cfg_base, 0x20, chips, type) == NULL)
2195                 return ret;
2196
2197         /* Select logical device (UART2) */
2198         outb(0x07, cfg_base);
2199         outb(0x05, cfg_base + 1);
2200
2201         /* SIR iobase */
2202         outb(0x60, cfg_base);
2203         sir_io = inb(cfg_base + 1) << 8;
2204         outb(0x61, cfg_base);
2205         sir_io |= inb(cfg_base + 1);
2206
2207         /* Read FIR base */
2208         outb(0x62, cfg_base);
2209         fir_io = inb(cfg_base + 1) << 8;
2210         outb(0x63, cfg_base);
2211         fir_io |= inb(cfg_base + 1);
2212         outb(0x2b, cfg_base); /* ??? */
2213
2214         if (fir_io && smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0)
2215                 ret = 0;
2216
2217         /* Exit configuration */
2218         outb(SMSCSIO_CFGEXITKEY, cfg_base);
2219
2220         return ret;
2221 }
2222
2223
2224 static int __init smsc_access(unsigned short cfg_base, unsigned char reg)
2225 {
2226         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
2227
2228         outb(reg, cfg_base);
2229         return inb(cfg_base) != reg ? -1 : 0;
2230 }
2231
2232 static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type)
2233 {
2234         u8 devid, xdevid, rev;
2235
2236         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
2237
2238         /* Leave configuration */
2239
2240         outb(SMSCSIO_CFGEXITKEY, cfg_base);
2241
2242         if (inb(cfg_base) == SMSCSIO_CFGEXITKEY)        /* not a smc superio chip */
2243                 return NULL;
2244
2245         outb(reg, cfg_base);
2246
2247         xdevid = inb(cfg_base + 1);
2248
2249         /* Enter configuration */
2250
2251         outb(SMSCSIO_CFGACCESSKEY, cfg_base);
2252
2253         #if 0
2254         if (smsc_access(cfg_base,0x55)) /* send second key and check */
2255                 return NULL;
2256         #endif
2257
2258         /* probe device ID */
2259
2260         if (smsc_access(cfg_base, reg))
2261                 return NULL;
2262
2263         devid = inb(cfg_base + 1);
2264
2265         if (devid == 0 || devid == 0xff)        /* typical values for unused port */
2266                 return NULL;
2267
2268         /* probe revision ID */
2269
2270         if (smsc_access(cfg_base, reg + 1))
2271                 return NULL;
2272
2273         rev = inb(cfg_base + 1);
2274
2275         if (rev >= 128)                 /* i think this will make no sense */
2276                 return NULL;
2277
2278         if (devid == xdevid)            /* protection against false positives */
2279                 return NULL;
2280
2281         /* Check for expected device ID; are there others? */
2282
2283         while (chip->devid != devid) {
2284
2285                 chip++;
2286
2287                 if (chip->name == NULL)
2288                         return NULL;
2289         }
2290
2291         IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n",
2292                      devid, rev, cfg_base, type, chip->name);
2293
2294         if (chip->rev > rev) {
2295                 IRDA_MESSAGE("Revision higher than expected\n");
2296                 return NULL;
2297         }
2298
2299         if (chip->flags & NoIRDA)
2300                 IRDA_MESSAGE("chipset does not support IRDA\n");
2301
2302         return chip;
2303 }
2304
2305 static int __init smsc_superio_fdc(unsigned short cfg_base)
2306 {
2307         int ret = -1;
2308
2309         if (!request_region(cfg_base, 2, driver_name)) {
2310                 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
2311                              __FUNCTION__, cfg_base);
2312         } else {
2313                 if (!smsc_superio_flat(fdc_chips_flat, cfg_base, "FDC") ||
2314                     !smsc_superio_paged(fdc_chips_paged, cfg_base, "FDC"))
2315                         ret =  0;
2316
2317                 release_region(cfg_base, 2);
2318         }
2319
2320         return ret;
2321 }
2322
2323 static int __init smsc_superio_lpc(unsigned short cfg_base)
2324 {
2325         int ret = -1;
2326
2327         if (!request_region(cfg_base, 2, driver_name)) {
2328                 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
2329                              __FUNCTION__, cfg_base);
2330         } else {
2331                 if (!smsc_superio_flat(lpc_chips_flat, cfg_base, "LPC") ||
2332                     !smsc_superio_paged(lpc_chips_paged, cfg_base, "LPC"))
2333                         ret = 0;
2334
2335                 release_region(cfg_base, 2);
2336         }
2337         return ret;
2338 }
2339
2340 /*
2341  * Look for some specific subsystem setups that need
2342  * pre-configuration not properly done by the BIOS (especially laptops)
2343  * This code is based in part on smcinit.c, tosh1800-smcinit.c
2344  * and tosh2450-smcinit.c. The table lists the device entries
2345  * for ISA bridges with an LPC (Low Pin Count) controller which
2346  * handles the communication with the SMSC device. After the LPC
2347  * controller is initialized through PCI, the SMSC device is initialized
2348  * through a dedicated port in the ISA port-mapped I/O area, this latter
2349  * area is used to configure the SMSC device with default
2350  * SIR and FIR I/O ports, DMA and IRQ. Different vendors have
2351  * used different sets of parameters and different control port
2352  * addresses making a subsystem device table necessary.
2353  */
2354 #ifdef CONFIG_PCI
2355 #define PCIID_VENDOR_INTEL 0x8086
2356 #define PCIID_VENDOR_ALI 0x10b9
2357 static struct smsc_ircc_subsystem_configuration subsystem_configurations[] __initdata = {
2358         /*
2359          * Subsystems needing entries:
2360          * 0x10b9:0x1533 0x103c:0x0850 HP nx9010 family
2361          * 0x10b9:0x1533 0x0e11:0x005a Compaq nc4000 family
2362          * 0x8086:0x24cc 0x0e11:0x002a HP nx9000 family
2363          */
2364         {
2365                 /* Guessed entry */
2366                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2367                 .device = 0x24cc,
2368                 .subvendor = 0x103c,
2369                 .subdevice = 0x08bc,
2370                 .sir_io = 0x02f8,
2371                 .fir_io = 0x0130,
2372                 .fir_irq = 0x05,
2373                 .fir_dma = 0x03,
2374                 .cfg_base = 0x004e,
2375                 .preconfigure = preconfigure_through_82801,
2376                 .name = "HP nx5000 family",
2377         },
2378         {
2379                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2380                 .device = 0x24cc,
2381                 .subvendor = 0x103c,
2382                 .subdevice = 0x088c,
2383                 /* Quite certain these are the same for nc8000 as for nc6000 */
2384                 .sir_io = 0x02f8,
2385                 .fir_io = 0x0130,
2386                 .fir_irq = 0x05,
2387                 .fir_dma = 0x03,
2388                 .cfg_base = 0x004e,
2389                 .preconfigure = preconfigure_through_82801,
2390                 .name = "HP nc8000 family",
2391         },
2392         {
2393                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2394                 .device = 0x24cc,
2395                 .subvendor = 0x103c,
2396                 .subdevice = 0x0890,
2397                 .sir_io = 0x02f8,
2398                 .fir_io = 0x0130,
2399                 .fir_irq = 0x05,
2400                 .fir_dma = 0x03,
2401                 .cfg_base = 0x004e,
2402                 .preconfigure = preconfigure_through_82801,
2403                 .name = "HP nc6000 family",
2404         },
2405         {
2406                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2407                 .device = 0x24cc,
2408                 .subvendor = 0x0e11,
2409                 .subdevice = 0x0860,
2410                 /* I assume these are the same for x1000 as for the others */
2411                 .sir_io = 0x02e8,
2412                 .fir_io = 0x02f8,
2413                 .fir_irq = 0x07,
2414                 .fir_dma = 0x03,
2415                 .cfg_base = 0x002e,
2416                 .preconfigure = preconfigure_through_82801,
2417                 .name = "Compaq x1000 family",
2418         },
2419         {
2420                 /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */
2421                 .vendor = PCIID_VENDOR_INTEL,
2422                 .device = 0x24c0,
2423                 .subvendor = 0x1179,
2424                 .subdevice = 0xffff, /* 0xffff is "any" */
2425                 .sir_io = 0x03f8,
2426                 .fir_io = 0x0130,
2427                 .fir_irq = 0x07,
2428                 .fir_dma = 0x01,
2429                 .cfg_base = 0x002e,
2430                 .preconfigure = preconfigure_through_82801,
2431                 .name = "Toshiba laptop with Intel 82801DB/DBL LPC bridge",
2432         },
2433         {
2434                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */
2435                 .device = 0x248c,
2436                 .subvendor = 0x1179,
2437                 .subdevice = 0xffff, /* 0xffff is "any" */
2438                 .sir_io = 0x03f8,
2439                 .fir_io = 0x0130,
2440                 .fir_irq = 0x03,
2441                 .fir_dma = 0x03,
2442                 .cfg_base = 0x002e,
2443                 .preconfigure = preconfigure_through_82801,
2444                 .name = "Toshiba laptop with Intel 82801CAM ISA bridge",
2445         },
2446         {
2447                 /* 82801DBM (ICH4-M) LPC Interface Bridge */
2448                 .vendor = PCIID_VENDOR_INTEL,
2449                 .device = 0x24cc,
2450                 .subvendor = 0x1179,
2451                 .subdevice = 0xffff, /* 0xffff is "any" */
2452                 .sir_io = 0x03f8,
2453                 .fir_io = 0x0130,
2454                 .fir_irq = 0x03,
2455                 .fir_dma = 0x03,
2456                 .cfg_base = 0x002e,
2457                 .preconfigure = preconfigure_through_82801,
2458                 .name = "Toshiba laptop with Intel 8281DBM LPC bridge",
2459         },
2460         {
2461                 /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */
2462                 .vendor = PCIID_VENDOR_ALI,
2463                 .device = 0x1533,
2464                 .subvendor = 0x1179,
2465                 .subdevice = 0xffff, /* 0xffff is "any" */
2466                 .sir_io = 0x02e8,
2467                 .fir_io = 0x02f8,
2468                 .fir_irq = 0x07,
2469                 .fir_dma = 0x03,
2470                 .cfg_base = 0x002e,
2471                 .preconfigure = preconfigure_through_ali,
2472                 .name = "Toshiba laptop with ALi ISA bridge",
2473         },
2474         { } // Terminator
2475 };
2476
2477
2478 /*
2479  * This sets up the basic SMSC parameters
2480  * (FIR port, SIR port, FIR DMA, FIR IRQ)
2481  * through the chip configuration port.
2482  */
2483 static int __init preconfigure_smsc_chip(struct
2484                                          smsc_ircc_subsystem_configuration
2485                                          *conf)
2486 {
2487         unsigned short iobase = conf->cfg_base;
2488         unsigned char tmpbyte;
2489
2490         outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state
2491         outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID
2492         tmpbyte = inb(iobase +1); // Read device ID
2493         IRDA_DEBUG(0,
2494                    "Detected Chip id: 0x%02x, setting up registers...\n",
2495                    tmpbyte);
2496
2497         /* Disable UART1 and set up SIR I/O port */
2498         outb(0x24, iobase);  // select CR24 - UART1 base addr
2499         outb(0x00, iobase + 1); // disable UART1
2500         outb(SMSCSIOFLAT_UART2BASEADDR_REG, iobase);  // select CR25 - UART2 base addr
2501         outb( (conf->sir_io >> 2), iobase + 1); // bits 2-9 of 0x3f8
2502         tmpbyte = inb(iobase + 1);
2503         if (tmpbyte != (conf->sir_io >> 2) ) {
2504                 IRDA_WARNING("ERROR: could not configure SIR ioport.\n");
2505                 IRDA_WARNING("Try to supply ircc_cfg argument.\n");
2506                 return -ENXIO;
2507         }
2508
2509         /* Set up FIR IRQ channel for UART2 */
2510         outb(SMSCSIOFLAT_UARTIRQSELECT_REG, iobase); // select CR28 - UART1,2 IRQ select
2511         tmpbyte = inb(iobase + 1);
2512         tmpbyte &= SMSCSIOFLAT_UART1IRQSELECT_MASK; // Do not touch the UART1 portion
2513         tmpbyte |= (conf->fir_irq & SMSCSIOFLAT_UART2IRQSELECT_MASK);
2514         outb(tmpbyte, iobase + 1);
2515         tmpbyte = inb(iobase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK;
2516         if (tmpbyte != conf->fir_irq) {
2517                 IRDA_WARNING("ERROR: could not configure FIR IRQ channel.\n");
2518                 return -ENXIO;
2519         }
2520
2521         /* Set up FIR I/O port */
2522         outb(SMSCSIOFLAT_FIRBASEADDR_REG, iobase);  // CR2B - SCE (FIR) base addr
2523         outb((conf->fir_io >> 3), iobase + 1);
2524         tmpbyte = inb(iobase + 1);
2525         if (tmpbyte != (conf->fir_io >> 3) ) {
2526                 IRDA_WARNING("ERROR: could not configure FIR I/O port.\n");
2527                 return -ENXIO;
2528         }
2529
2530         /* Set up FIR DMA channel */
2531         outb(SMSCSIOFLAT_FIRDMASELECT_REG, iobase);  // CR2C - SCE (FIR) DMA select
2532         outb((conf->fir_dma & LPC47N227_FIRDMASELECT_MASK), iobase + 1); // DMA
2533         tmpbyte = inb(iobase + 1) & LPC47N227_FIRDMASELECT_MASK;
2534         if (tmpbyte != (conf->fir_dma & LPC47N227_FIRDMASELECT_MASK)) {
2535                 IRDA_WARNING("ERROR: could not configure FIR DMA channel.\n");
2536                 return -ENXIO;
2537         }
2538
2539         outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase);  // CR0C - UART mode
2540         tmpbyte = inb(iobase + 1);
2541         tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK |
2542                 SMSCSIOFLAT_UART2MODE_VAL_IRDA;
2543         outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed
2544
2545         outb(LPC47N227_APMBOOTDRIVE_REG, iobase);  // CR07 - Auto Pwr Mgt/boot drive sel
2546         tmpbyte = inb(iobase + 1);
2547         outb(tmpbyte | LPC47N227_UART2AUTOPWRDOWN_MASK, iobase + 1); // enable UART2 autopower down
2548
2549         /* This one was not part of tosh1800 */
2550         outb(0x0a, iobase);  // CR0a - ecp fifo / ir mux
2551         tmpbyte = inb(iobase + 1);
2552         outb(tmpbyte | 0x40, iobase + 1); // send active device to ir port
2553
2554         outb(LPC47N227_UART12POWER_REG, iobase);  // CR02 - UART 1,2 power
2555         tmpbyte = inb(iobase + 1);
2556         outb(tmpbyte | LPC47N227_UART2POWERDOWN_MASK, iobase + 1); // UART2 power up mode, UART1 power down
2557
2558         outb(LPC47N227_FDCPOWERVALIDCONF_REG, iobase);  // CR00 - FDC Power/valid config cycle
2559         tmpbyte = inb(iobase + 1);
2560         outb(tmpbyte | LPC47N227_VALID_MASK, iobase + 1); // valid config cycle done
2561
2562         outb(LPC47N227_CFGEXITKEY, iobase);  // Exit configuration
2563
2564         return 0;
2565 }
2566
2567 /* 82801CAM generic registers */
2568 #define VID 0x00
2569 #define DID 0x02
2570 #define PIRQ_A_D_ROUT 0x60
2571 #define SIRQ_CNTL 0x64
2572 #define PIRQ_E_H_ROUT 0x68
2573 #define PCI_DMA_C 0x90
2574 /* LPC-specific registers */
2575 #define COM_DEC 0xe0
2576 #define GEN1_DEC 0xe4
2577 #define LPC_EN 0xe6
2578 #define GEN2_DEC 0xec
2579 /*
2580  * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge
2581  * or Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge.
2582  * They all work the same way!
2583  */
2584 static int __init preconfigure_through_82801(struct pci_dev *dev,
2585                                              struct
2586                                              smsc_ircc_subsystem_configuration
2587                                              *conf)
2588 {
2589         unsigned short tmpword;
2590         unsigned char tmpbyte;
2591
2592         IRDA_MESSAGE("Setting up Intel 82801 controller and SMSC device\n");
2593         /*
2594          * Select the range for the COMA COM port (SIR)
2595          * Register COM_DEC:
2596          * Bit 7: reserved
2597          * Bit 6-4, COMB decode range
2598          * Bit 3: reserved
2599          * Bit 2-0, COMA decode range
2600          *
2601          * Decode ranges:
2602          *   000 = 0x3f8-0x3ff (COM1)
2603          *   001 = 0x2f8-0x2ff (COM2)
2604          *   010 = 0x220-0x227
2605          *   011 = 0x228-0x22f
2606          *   100 = 0x238-0x23f
2607          *   101 = 0x2e8-0x2ef (COM4)
2608          *   110 = 0x338-0x33f
2609          *   111 = 0x3e8-0x3ef (COM3)
2610          */
2611         pci_read_config_byte(dev, COM_DEC, &tmpbyte);
2612         tmpbyte &= 0xf8; /* mask COMA bits */
2613         switch(conf->sir_io) {
2614         case 0x3f8:
2615                 tmpbyte |= 0x00;
2616                 break;
2617         case 0x2f8:
2618                 tmpbyte |= 0x01;
2619                 break;
2620         case 0x220:
2621                 tmpbyte |= 0x02;
2622                 break;
2623         case 0x228:
2624                 tmpbyte |= 0x03;
2625                 break;
2626         case 0x238:
2627                 tmpbyte |= 0x04;
2628                 break;
2629         case 0x2e8:
2630                 tmpbyte |= 0x05;
2631                 break;
2632         case 0x338:
2633                 tmpbyte |= 0x06;
2634                 break;
2635         case 0x3e8:
2636                 tmpbyte |= 0x07;
2637                 break;
2638         default:
2639                 tmpbyte |= 0x01; /* COM2 default */
2640         }
2641         IRDA_DEBUG(1, "COM_DEC (write): 0x%02x\n", tmpbyte);
2642         pci_write_config_byte(dev, COM_DEC, tmpbyte);
2643
2644         /* Enable Low Pin Count interface */
2645         pci_read_config_word(dev, LPC_EN, &tmpword);
2646         /* These seem to be set up at all times,
2647          * just make sure it is properly set.
2648          */
2649         switch(conf->cfg_base) {
2650         case 0x04e:
2651                 tmpword |= 0x2000;
2652                 break;
2653         case 0x02e:
2654                 tmpword |= 0x1000;
2655                 break;
2656         case 0x062:
2657                 tmpword |= 0x0800;
2658                 break;
2659         case 0x060:
2660                 tmpword |= 0x0400;
2661                 break;
2662         default:
2663                 IRDA_WARNING("Uncommon I/O base address: 0x%04x\n",
2664                              conf->cfg_base);
2665                 break;
2666         }
2667         tmpword &= 0xfffd; /* disable LPC COMB */
2668         tmpword |= 0x0001; /* set bit 0 : enable LPC COMA addr range (GEN2) */
2669         IRDA_DEBUG(1, "LPC_EN (write): 0x%04x\n", tmpword);
2670         pci_write_config_word(dev, LPC_EN, tmpword);
2671
2672         /*
2673          * Configure LPC DMA channel
2674          * PCI_DMA_C bits:
2675          * Bit 15-14: DMA channel 7 select
2676          * Bit 13-12: DMA channel 6 select
2677          * Bit 11-10: DMA channel 5 select
2678          * Bit 9-8:   Reserved
2679          * Bit 7-6:   DMA channel 3 select
2680          * Bit 5-4:   DMA channel 2 select
2681          * Bit 3-2:   DMA channel 1 select
2682          * Bit 1-0:   DMA channel 0 select
2683          *  00 = Reserved value
2684          *  01 = PC/PCI DMA
2685          *  10 = Reserved value
2686          *  11 = LPC I/F DMA
2687          */
2688         pci_read_config_word(dev, PCI_DMA_C, &tmpword);
2689         switch(conf->fir_dma) {
2690         case 0x07:
2691                 tmpword |= 0xc000;
2692                 break;
2693         case 0x06:
2694                 tmpword |= 0x3000;
2695                 break;
2696         case 0x05:
2697                 tmpword |= 0x0c00;
2698                 break;
2699         case 0x03:
2700                 tmpword |= 0x00c0;
2701                 break;
2702         case 0x02:
2703                 tmpword |= 0x0030;
2704                 break;
2705         case 0x01:
2706                 tmpword |= 0x000c;
2707                 break;
2708         case 0x00:
2709                 tmpword |= 0x0003;
2710                 break;
2711         default:
2712                 break; /* do not change settings */
2713         }
2714         IRDA_DEBUG(1, "PCI_DMA_C (write): 0x%04x\n", tmpword);
2715         pci_write_config_word(dev, PCI_DMA_C, tmpword);
2716
2717         /*
2718          * GEN2_DEC bits:
2719          * Bit 15-4: Generic I/O range
2720          * Bit 3-1: reserved (read as 0)
2721          * Bit 0: enable GEN2 range on LPC I/F
2722          */
2723         tmpword = conf->fir_io & 0xfff8;
2724         tmpword |= 0x0001;
2725         IRDA_DEBUG(1, "GEN2_DEC (write): 0x%04x\n", tmpword);
2726         pci_write_config_word(dev, GEN2_DEC, tmpword);
2727
2728         /* Pre-configure chip */
2729         return preconfigure_smsc_chip(conf);
2730 }
2731
2732 /*
2733  * Pre-configure a certain port on the ALi 1533 bridge.
2734  * This is based on reverse-engineering since ALi does not
2735  * provide any data sheet for the 1533 chip.
2736  */
2737 static void __init preconfigure_ali_port(struct pci_dev *dev,
2738                                          unsigned short port)
2739 {
2740         unsigned char reg;
2741         /* These bits obviously control the different ports */
2742         unsigned char mask;
2743         unsigned char tmpbyte;
2744
2745         switch(port) {
2746         case 0x0130:
2747         case 0x0178:
2748                 reg = 0xb0;
2749                 mask = 0x80;
2750                 break;
2751         case 0x03f8:
2752                 reg = 0xb4;
2753                 mask = 0x80;
2754                 break;
2755         case 0x02f8:
2756                 reg = 0xb4;
2757                 mask = 0x30;
2758                 break;
2759         case 0x02e8:
2760                 reg = 0xb4;
2761                 mask = 0x08;
2762                 break;
2763         default:
2764                 IRDA_ERROR("Failed to configure unsupported port on ALi 1533 bridge: 0x%04x\n", port);
2765                 return;
2766         }
2767
2768         pci_read_config_byte(dev, reg, &tmpbyte);
2769         /* Turn on the right bits */
2770         tmpbyte |= mask;
2771         pci_write_config_byte(dev, reg, tmpbyte);
2772         IRDA_MESSAGE("Activated ALi 1533 ISA bridge port 0x%04x.\n", port);
2773         return;
2774 }
2775
2776 static int __init preconfigure_through_ali(struct pci_dev *dev,
2777                                            struct
2778                                            smsc_ircc_subsystem_configuration
2779                                            *conf)
2780 {
2781         /* Configure the two ports on the ALi 1533 */
2782         preconfigure_ali_port(dev, conf->sir_io);
2783         preconfigure_ali_port(dev, conf->fir_io);
2784
2785         /* Pre-configure chip */
2786         return preconfigure_smsc_chip(conf);
2787 }
2788
2789 static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
2790                                                     unsigned short ircc_fir,
2791                                                     unsigned short ircc_sir,
2792                                                     unsigned char ircc_dma,
2793                                                     unsigned char ircc_irq)
2794 {
2795         struct pci_dev *dev = NULL;
2796         unsigned short ss_vendor = 0x0000;
2797         unsigned short ss_device = 0x0000;
2798         int ret = 0;
2799
2800         dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
2801
2802         while (dev != NULL) {
2803                 struct smsc_ircc_subsystem_configuration *conf;
2804
2805                 /*
2806                  * Cache the subsystem vendor/device:
2807                  * some manufacturers fail to set this for all components,
2808                  * so we save it in case there is just 0x0000 0x0000 on the
2809                  * device we want to check.
2810                  */
2811                 if (dev->subsystem_vendor != 0x0000U) {
2812                         ss_vendor = dev->subsystem_vendor;
2813                         ss_device = dev->subsystem_device;
2814                 }
2815                 conf = subsystem_configurations;
2816                 for( ; conf->subvendor; conf++) {
2817                         if(conf->vendor == dev->vendor &&
2818                            conf->device == dev->device &&
2819                            conf->subvendor == ss_vendor &&
2820                            /* Sometimes these are cached values */
2821                            (conf->subdevice == ss_device ||
2822                             conf->subdevice == 0xffff)) {
2823                                 struct smsc_ircc_subsystem_configuration
2824                                         tmpconf;
2825
2826                                 memcpy(&tmpconf, conf,
2827                                        sizeof(struct smsc_ircc_subsystem_configuration));
2828
2829                                 /*
2830                                  * Override the default values with anything
2831                                  * passed in as parameter
2832                                  */
2833                                 if (ircc_cfg != 0)
2834                                         tmpconf.cfg_base = ircc_cfg;
2835                                 if (ircc_fir != 0)
2836                                         tmpconf.fir_io = ircc_fir;
2837                                 if (ircc_sir != 0)
2838                                         tmpconf.sir_io = ircc_sir;
2839                                 if (ircc_dma != 0xff)
2840                                         tmpconf.fir_dma = ircc_dma;
2841                                 if (ircc_irq != 0xff)
2842                                         tmpconf.fir_irq = ircc_irq;
2843
2844                                 IRDA_MESSAGE("Detected unconfigured %s SMSC IrDA chip, pre-configuring device.\n", conf->name);
2845                                 if (conf->preconfigure)
2846                                         ret = conf->preconfigure(dev, &tmpconf);
2847                                 else
2848                                         ret = -ENODEV;
2849                         }
2850                 }
2851                 dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
2852         }
2853
2854         return ret;
2855 }
2856 #endif // CONFIG_PCI
2857
2858 /************************************************
2859  *
2860  * Transceivers specific functions
2861  *
2862  ************************************************/
2863
2864
2865 /*
2866  * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed)
2867  *
2868  *    Program transceiver through smsc-ircc ATC circuitry
2869  *
2870  */
2871
2872 static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed)
2873 {
2874         unsigned long jiffies_now, jiffies_timeout;
2875         u8 val;
2876
2877         jiffies_now = jiffies;
2878         jiffies_timeout = jiffies + SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES;
2879
2880         /* ATC */
2881         register_bank(fir_base, 4);
2882         outb((inb(fir_base + IRCC_ATC) & IRCC_ATC_MASK) | IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE,
2883              fir_base + IRCC_ATC);
2884
2885         while ((val = (inb(fir_base + IRCC_ATC) & IRCC_ATC_nPROGREADY)) &&
2886                 !time_after(jiffies, jiffies_timeout))
2887                 /* empty */;
2888
2889         if (val)
2890                 IRDA_WARNING("%s(): ATC: 0x%02x\n", __FUNCTION__,
2891                              inb(fir_base + IRCC_ATC));
2892 }
2893
2894 /*
2895  * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base)
2896  *
2897  *    Probe transceiver smsc-ircc ATC circuitry
2898  *
2899  */
2900
2901 static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base)
2902 {
2903         return 0;
2904 }
2905
2906 /*
2907  * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed)
2908  *
2909  *    Set transceiver
2910  *
2911  */
2912
2913 static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed)
2914 {
2915         u8 fast_mode;
2916
2917         switch (speed) {
2918         default:
2919         case 576000 :
2920                 fast_mode = 0;
2921                 break;
2922         case 1152000 :
2923         case 4000000 :
2924                 fast_mode = IRCC_LCR_A_FAST;
2925                 break;
2926         }
2927         register_bank(fir_base, 0);
2928         outb((inb(fir_base + IRCC_LCR_A) & 0xbf) | fast_mode, fir_base + IRCC_LCR_A);
2929 }
2930
2931 /*
2932  * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base)
2933  *
2934  *    Probe transceiver
2935  *
2936  */
2937
2938 static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base)
2939 {
2940         return 0;
2941 }
2942
2943 /*
2944  * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed)
2945  *
2946  *    Set transceiver
2947  *
2948  */
2949
2950 static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed)
2951 {
2952         u8 fast_mode;
2953
2954         switch (speed) {
2955         default:
2956         case 576000 :
2957                 fast_mode = 0;
2958                 break;
2959         case 1152000 :
2960         case 4000000 :
2961                 fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA;
2962                 break;
2963
2964         }
2965         /* This causes an interrupt */
2966         register_bank(fir_base, 0);
2967         outb((inb(fir_base + IRCC_LCR_A) &  0xbf) | fast_mode, fir_base + IRCC_LCR_A);
2968 }
2969
2970 /*
2971  * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base)
2972  *
2973  *    Probe transceiver
2974  *
2975  */
2976
2977 static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base)
2978 {
2979         return 0;
2980 }
2981
2982
2983 module_init(smsc_ircc_init);
2984 module_exit(smsc_ircc_cleanup);