git.oblomov.eu Git - linux-2.6/blob - drivers/net/irda/smsc-ircc2.c

   1 /*********************************************************************
   2  *
   3  * Description:   Driver for the SMC Infrared Communications Controller
   4  * Status:        Experimental.
   5  * Author:        Daniele Peri (peri@csai.unipa.it)
   6  * Created at:
   7  * Modified at:
   8  * Modified by:
   9  *
  10  *     Copyright (c) 2002      Daniele Peri
  11  *     All Rights Reserved.
  12  *     Copyright (c) 2002      Jean Tourrilhes
  13  *     Copyright (c) 2006      Linus Walleij
  14  *
  15  *
  16  * Based on smc-ircc.c:
  17  *
  18  *     Copyright (c) 2001      Stefani Seibold
  19  *     Copyright (c) 1999-2001 Dag Brattli
  20  *     Copyright (c) 1998-1999 Thomas Davis,
  21  *
  22  *      and irport.c:
  23  *
  24  *     Copyright (c) 1997, 1998, 1999-2000 Dag Brattli, All Rights Reserved.
  25  *
  26  *
  27  *     This program is free software; you can redistribute it and/or
  28  *     modify it under the terms of the GNU General Public License as
  29  *     published by the Free Software Foundation; either version 2 of
  30  *     the License, or (at your option) any later version.
  31  *
  32  *     This program is distributed in the hope that it will be useful,
  33  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  34  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  35  *     GNU General Public License for more details.
  36  *
  37  *     You should have received a copy of the GNU General Public License
  38  *     along with this program; if not, write to the Free Software
  39  *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  40  *     MA 02111-1307 USA
  41  *
  42  ********************************************************************/
  43
  44 #include <linux/module.h>
  45 #include <linux/kernel.h>
  46 #include <linux/types.h>
  47 #include <linux/skbuff.h>
  48 #include <linux/netdevice.h>
  49 #include <linux/ioport.h>
  50 #include <linux/delay.h>
  51 #include <linux/slab.h>
  52 #include <linux/init.h>
  53 #include <linux/rtnetlink.h>
  54 #include <linux/serial_reg.h>
  55 #include <linux/dma-mapping.h>
  56 #include <linux/pnp.h>
  57 #include <linux/platform_device.h>
  58
  59 #include <asm/io.h>
  60 #include <asm/dma.h>
  61 #include <asm/byteorder.h>
  62
  63 #include <linux/spinlock.h>
  64 #include <linux/pm.h>
  65 #ifdef CONFIG_PCI
  66 #include <linux/pci.h>
  67 #endif
  68
  69 #include <net/irda/wrapper.h>
  70 #include <net/irda/irda.h>
  71 #include <net/irda/irda_device.h>
  72
  73 #include "smsc-ircc2.h"
  74 #include "smsc-sio.h"
  75
  76
  77 MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>");
  78 MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver");
  79 MODULE_LICENSE("GPL");
  80
  81 static int smsc_nopnp = 1;
  82 module_param_named(nopnp, smsc_nopnp, bool, 0);
  83 MODULE_PARM_DESC(nopnp, "Do not use PNP to detect controller settings, defaults to true");
  84
  85 #define DMA_INVAL 255
  86 static int ircc_dma = DMA_INVAL;
  87 module_param(ircc_dma, int, 0);
  88 MODULE_PARM_DESC(ircc_dma, "DMA channel");
  89
  90 #define IRQ_INVAL 255
  91 static int ircc_irq = IRQ_INVAL;
  92 module_param(ircc_irq, int, 0);
  93 MODULE_PARM_DESC(ircc_irq, "IRQ line");
  94
  95 static int ircc_fir;
  96 module_param(ircc_fir, int, 0);
  97 MODULE_PARM_DESC(ircc_fir, "FIR Base Address");
  98
  99 static int ircc_sir;
 100 module_param(ircc_sir, int, 0);
 101 MODULE_PARM_DESC(ircc_sir, "SIR Base Address");
 102
 103 static int ircc_cfg;
 104 module_param(ircc_cfg, int, 0);
 105 MODULE_PARM_DESC(ircc_cfg, "Configuration register base address");
 106
 107 static int ircc_transceiver;
 108 module_param(ircc_transceiver, int, 0);
 109 MODULE_PARM_DESC(ircc_transceiver, "Transceiver type");
 110
 111 /* Types */
 112
 113 #ifdef CONFIG_PCI
 114 struct smsc_ircc_subsystem_configuration {
 115         unsigned short vendor; /* PCI vendor ID */
 116         unsigned short device; /* PCI vendor ID */
 117         unsigned short subvendor; /* PCI subsystem vendor ID */
 118         unsigned short subdevice; /* PCI sybsystem device ID */
 119         unsigned short sir_io; /* I/O port for SIR */
 120         unsigned short fir_io; /* I/O port for FIR */
 121         unsigned char  fir_irq; /* FIR IRQ */
 122         unsigned char  fir_dma; /* FIR DMA */
 123         unsigned short cfg_base; /* I/O port for chip configuration */
 124         int (*preconfigure)(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); /* Preconfig function */
 125         const char *name;       /* name shown as info */
 126 };
 127 #endif
 128
 129 struct smsc_transceiver {
 130         char *name;
 131         void (*set_for_speed)(int fir_base, u32 speed);
 132         int  (*probe)(int fir_base);
 133 };
 134
 135 struct smsc_chip {
 136         char *name;
 137         #if 0
 138         u8      type;
 139         #endif
 140         u16 flags;
 141         u8 devid;
 142         u8 rev;
 143 };
 144
 145 struct smsc_chip_address {
 146         unsigned int cfg_base;
 147         unsigned int type;
 148 };
 149
 150 /* Private data for each instance */
 151 struct smsc_ircc_cb {
 152         struct net_device *netdev;     /* Yes! we are some kind of netdevice */
 153         struct irlap_cb    *irlap; /* The link layer we are binded to */
 154
 155         chipio_t io;               /* IrDA controller information */
 156         iobuff_t tx_buff;          /* Transmit buffer */
 157         iobuff_t rx_buff;          /* Receive buffer */
 158         dma_addr_t tx_buff_dma;
 159         dma_addr_t rx_buff_dma;
 160
 161         struct qos_info qos;       /* QoS capabilities for this device */
 162
 163         spinlock_t lock;           /* For serializing operations */
 164
 165         __u32 new_speed;
 166         __u32 flags;               /* Interface flags */
 167
 168         int tx_buff_offsets[10];   /* Offsets between frames in tx_buff */
 169         int tx_len;                /* Number of frames in tx_buff */
 170
 171         int transceiver;
 172         struct platform_device *pldev;
 173 };
 174
 175 /* Constants */
 176
 177 #define SMSC_IRCC2_DRIVER_NAME                  "smsc-ircc2"
 178
 179 #define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED        9600
 180 #define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER        1
 181 #define SMSC_IRCC2_C_NET_TIMEOUT                0
 182 #define SMSC_IRCC2_C_SIR_STOP                   0
 183
 184 static const char *driver_name = SMSC_IRCC2_DRIVER_NAME;
 185
 186 /* Prototypes */
 187
 188 static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq);
 189 static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base);
 190 static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq);
 191 static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self);
 192 static void smsc_ircc_init_chip(struct smsc_ircc_cb *self);
 193 static int __exit smsc_ircc_close(struct smsc_ircc_cb *self);
 194 static int  smsc_ircc_dma_receive(struct smsc_ircc_cb *self);
 195 static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self);
 196 static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self);
 197 static int  smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev);
 198 static int  smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev);
 199 static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs);
 200 static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self);
 201 static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed);
 202 static void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, u32 speed);
 203 static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id);
 204 static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev);
 205 static void smsc_ircc_sir_start(struct smsc_ircc_cb *self);
 206 #if SMSC_IRCC2_C_SIR_STOP
 207 static void smsc_ircc_sir_stop(struct smsc_ircc_cb *self);
 208 #endif
 209 static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self);
 210 static int  smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
 211 static int  smsc_ircc_net_open(struct net_device *dev);
 212 static int  smsc_ircc_net_close(struct net_device *dev);
 213 static int  smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 214 #if SMSC_IRCC2_C_NET_TIMEOUT
 215 static void smsc_ircc_timeout(struct net_device *dev);
 216 #endif
 217 static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self);
 218 static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self);
 219 static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed);
 220 static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self);
 221
 222 /* Probing */
 223 static int __init smsc_ircc_look_for_chips(void);
 224 static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type);
 225 static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfg_base, char *type);
 226 static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type);
 227 static int __init smsc_superio_fdc(unsigned short cfg_base);
 228 static int __init smsc_superio_lpc(unsigned short cfg_base);
 229 #ifdef CONFIG_PCI
 230 static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf);
 231 static int __init preconfigure_through_82801(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
 232 static void __init preconfigure_ali_port(struct pci_dev *dev,
 233                                          unsigned short port);
 234 static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
 235 static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
 236                                                     unsigned short ircc_fir,
 237                                                     unsigned short ircc_sir,
 238                                                     unsigned char ircc_dma,
 239                                                     unsigned char ircc_irq);
 240 #endif
 241
 242 /* Transceivers specific functions */
 243
 244 static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed);
 245 static int  smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base);
 246 static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed);
 247 static int  smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base);
 248 static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed);
 249 static int  smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base);
 250
 251 /* Power Management */
 252
 253 static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state);
 254 static int smsc_ircc_resume(struct platform_device *dev);
 255
 256 static struct platform_driver smsc_ircc_driver = {
 257         .suspend        = smsc_ircc_suspend,
 258         .resume         = smsc_ircc_resume,
 259         .driver         = {
 260                 .name   = SMSC_IRCC2_DRIVER_NAME,
 261         },
 262 };
 263
 264 /* Transceivers for SMSC-ircc */
 265
 266 static struct smsc_transceiver smsc_transceivers[] =
 267 {
 268         { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800 },
 269         { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select },
 270         { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc },
 271         { NULL, NULL }
 272 };
 273 #define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1)
 274
 275 /*  SMC SuperIO chipsets definitions */
 276
 277 #define KEY55_1 0       /* SuperIO Configuration mode with Key <0x55> */
 278 #define KEY55_2 1       /* SuperIO Configuration mode with Key <0x55,0x55> */
 279 #define NoIRDA  2       /* SuperIO Chip has no IRDA Port */
 280 #define SIR     0       /* SuperIO Chip has only slow IRDA */
 281 #define FIR     4       /* SuperIO Chip has fast IRDA */
 282 #define SERx4   8       /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */
 283
 284 static struct smsc_chip __initdata fdc_chips_flat[] =
 285 {
 286         /* Base address 0x3f0 or 0x370 */
 287         { "37C44",      KEY55_1|NoIRDA,         0x00, 0x00 }, /* This chip cannot be detected */
 288         { "37C665GT",   KEY55_2|NoIRDA,         0x65, 0x01 },
 289         { "37C665GT",   KEY55_2|NoIRDA,         0x66, 0x01 },
 290         { "37C669",     KEY55_2|SIR|SERx4,      0x03, 0x02 },
 291         { "37C669",     KEY55_2|SIR|SERx4,      0x04, 0x02 }, /* ID? */
 292         { "37C78",      KEY55_2|NoIRDA,         0x78, 0x00 },
 293         { "37N769",     KEY55_1|FIR|SERx4,      0x28, 0x00 },
 294         { "37N869",     KEY55_1|FIR|SERx4,      0x29, 0x00 },
 295         { NULL }
 296 };
 297
 298 static struct smsc_chip __initdata fdc_chips_paged[] =
 299 {
 300         /* Base address 0x3f0 or 0x370 */
 301         { "37B72X",     KEY55_1|SIR|SERx4,      0x4c, 0x00 },
 302         { "37B77X",     KEY55_1|SIR|SERx4,      0x43, 0x00 },
 303         { "37B78X",     KEY55_1|SIR|SERx4,      0x44, 0x00 },
 304         { "37B80X",     KEY55_1|SIR|SERx4,      0x42, 0x00 },
 305         { "37C67X",     KEY55_1|FIR|SERx4,      0x40, 0x00 },
 306         { "37C93X",     KEY55_2|SIR|SERx4,      0x02, 0x01 },
 307         { "37C93XAPM",  KEY55_1|SIR|SERx4,      0x30, 0x01 },
 308         { "37C93XFR",   KEY55_2|FIR|SERx4,      0x03, 0x01 },
 309         { "37M707",     KEY55_1|SIR|SERx4,      0x42, 0x00 },
 310         { "37M81X",     KEY55_1|SIR|SERx4,      0x4d, 0x00 },
 311         { "37N958FR",   KEY55_1|FIR|SERx4,      0x09, 0x04 },
 312         { "37N971",     KEY55_1|FIR|SERx4,      0x0a, 0x00 },
 313         { "37N972",     KEY55_1|FIR|SERx4,      0x0b, 0x00 },
 314         { NULL }
 315 };
 316
 317 static struct smsc_chip __initdata lpc_chips_flat[] =
 318 {
 319         /* Base address 0x2E or 0x4E */
 320         { "47N227",     KEY55_1|FIR|SERx4,      0x5a, 0x00 },
 321         { "47N227",     KEY55_1|FIR|SERx4,      0x7a, 0x00 },
 322         { "47N267",     KEY55_1|FIR|SERx4,      0x5e, 0x00 },
 323         { NULL }
 324 };
 325
 326 static struct smsc_chip __initdata lpc_chips_paged[] =
 327 {
 328         /* Base address 0x2E or 0x4E */
 329         { "47B27X",     KEY55_1|SIR|SERx4,      0x51, 0x00 },
 330         { "47B37X",     KEY55_1|SIR|SERx4,      0x52, 0x00 },
 331         { "47M10X",     KEY55_1|SIR|SERx4,      0x59, 0x00 },
 332         { "47M120",     KEY55_1|NoIRDA|SERx4,   0x5c, 0x00 },
 333         { "47M13X",     KEY55_1|SIR|SERx4,      0x59, 0x00 },
 334         { "47M14X",     KEY55_1|SIR|SERx4,      0x5f, 0x00 },
 335         { "47N252",     KEY55_1|FIR|SERx4,      0x0e, 0x00 },
 336         { "47S42X",     KEY55_1|SIR|SERx4,      0x57, 0x00 },
 337         { NULL }
 338 };
 339
 340 #define SMSCSIO_TYPE_FDC        1
 341 #define SMSCSIO_TYPE_LPC        2
 342 #define SMSCSIO_TYPE_FLAT       4
 343 #define SMSCSIO_TYPE_PAGED      8
 344
 345 static struct smsc_chip_address __initdata possible_addresses[] =
 346 {
 347         { 0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 348         { 0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 349         { 0xe0,  SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 350         { 0x2e,  SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 351         { 0x4e,  SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 352         { 0, 0 }
 353 };
 354
 355 /* Globals */
 356
 357 static struct smsc_ircc_cb *dev_self[] = { NULL, NULL };
 358 static unsigned short dev_count;
 359
 360 static inline void register_bank(int iobase, int bank)
 361 {
 362         outb(((inb(iobase + IRCC_MASTER) & 0xf0) | (bank & 0x07)),
 363                iobase + IRCC_MASTER);
 364 }
 365
 366 /* PNP hotplug support */
 367 static const struct pnp_device_id smsc_ircc_pnp_table[] = {
 368         { .id = "SMCf010", .driver_data = 0 },
 369         /* and presumably others */
 370         { }
 371 };
 372 MODULE_DEVICE_TABLE(pnp, smsc_ircc_pnp_table);
 373
 374 static int pnp_driver_registered;
 375
 376 #ifdef CONFIG_PNP
 377 static int __init smsc_ircc_pnp_probe(struct pnp_dev *dev,
 378                                       const struct pnp_device_id *dev_id)
 379 {
 380         unsigned int firbase, sirbase;
 381         u8 dma, irq;
 382
 383         if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) &&
 384               pnp_dma_valid(dev, 0) && pnp_irq_valid(dev, 0)))
 385                 return -EINVAL;
 386
 387         sirbase = pnp_port_start(dev, 0);
 388         firbase = pnp_port_start(dev, 1);
 389         dma = pnp_dma(dev, 0);
 390         irq = pnp_irq(dev, 0);
 391
 392         if (smsc_ircc_open(firbase, sirbase, dma, irq))
 393                 return -ENODEV;
 394
 395         return 0;
 396 }
 397
 398 static struct pnp_driver smsc_ircc_pnp_driver = {
 399         .name           = "smsc-ircc2",
 400         .id_table       = smsc_ircc_pnp_table,
 401         .probe          = smsc_ircc_pnp_probe,
 402 };
 403 #else /* CONFIG_PNP */
 404 static struct pnp_driver smsc_ircc_pnp_driver;
 405 #endif
 406
 407 /*******************************************************************************
 408  *
 409  *
 410  * SMSC-ircc stuff
 411  *
 412  *
 413  *******************************************************************************/
 414
 415 static int __init smsc_ircc_legacy_probe(void)
 416 {
 417         int ret = 0;
 418
 419 #ifdef CONFIG_PCI
 420         if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) {
 421                 /* Ignore errors from preconfiguration */
 422                 IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name);
 423         }
 424 #endif
 425
 426         if (ircc_fir > 0 && ircc_sir > 0) {
 427                 IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir);
 428                 IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir);
 429
 430                 if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq))
 431                         ret = -ENODEV;
 432         } else {
 433                 ret = -ENODEV;
 434
 435                 /* try user provided configuration register base address */
 436                 if (ircc_cfg > 0) {
 437                         IRDA_MESSAGE(" Overriding configuration address "
 438                                      "0x%04x\n", ircc_cfg);
 439                         if (!smsc_superio_fdc(ircc_cfg))
 440                                 ret = 0;
 441                         if (!smsc_superio_lpc(ircc_cfg))
 442                                 ret = 0;
 443                 }
 444
 445                 if (smsc_ircc_look_for_chips() > 0)
 446                         ret = 0;
 447         }
 448         return ret;
 449 }
 450
 451 /*
 452  * Function smsc_ircc_init ()
 453  *
 454  *    Initialize chip. Just try to find out how many chips we are dealing with
 455  *    and where they are
 456  */
 457 static int __init smsc_ircc_init(void)
 458 {
 459         int ret;
 460
 461         IRDA_DEBUG(1, "%s\n", __func__);
 462
 463         ret = platform_driver_register(&smsc_ircc_driver);
 464         if (ret) {
 465                 IRDA_ERROR("%s, Can't register driver!\n", driver_name);
 466                 return ret;
 467         }
 468
 469         dev_count = 0;
 470
 471         if (smsc_nopnp || !pnp_platform_devices ||
 472             ircc_cfg || ircc_fir || ircc_sir ||
 473             ircc_dma != DMA_INVAL || ircc_irq != IRQ_INVAL) {
 474                 ret = smsc_ircc_legacy_probe();
 475         } else {
 476                 if (pnp_register_driver(&smsc_ircc_pnp_driver) == 0)
 477                         pnp_driver_registered = 1;
 478         }
 479
 480         if (ret) {
 481                 if (pnp_driver_registered)
 482                         pnp_unregister_driver(&smsc_ircc_pnp_driver);
 483                 platform_driver_unregister(&smsc_ircc_driver);
 484         }
 485
 486         return ret;
 487 }
 488
 489 /*
 490  * Function smsc_ircc_open (firbase, sirbase, dma, irq)
 491  *
 492  *    Try to open driver instance
 493  *
 494  */
 495 static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq)
 496 {
 497         struct smsc_ircc_cb *self;
 498         struct net_device *dev;
 499         int err;
 500
 501         IRDA_DEBUG(1, "%s\n", __func__);
 502
 503         err = smsc_ircc_present(fir_base, sir_base);
 504         if (err)
 505                 goto err_out;
 506
 507         err = -ENOMEM;
 508         if (dev_count >= ARRAY_SIZE(dev_self)) {
 509                 IRDA_WARNING("%s(), too many devices!\n", __func__);
 510                 goto err_out1;
 511         }
 512
 513         /*
 514          *  Allocate new instance of the driver
 515          */
 516         dev = alloc_irdadev(sizeof(struct smsc_ircc_cb));
 517         if (!dev) {
 518                 IRDA_WARNING("%s() can't allocate net device\n", __func__);
 519                 goto err_out1;
 520         }
 521
 522         dev->hard_start_xmit = smsc_ircc_hard_xmit_sir;
 523 #if SMSC_IRCC2_C_NET_TIMEOUT
 524         dev->tx_timeout      = smsc_ircc_timeout;
 525         dev->watchdog_timeo  = HZ * 2;  /* Allow enough time for speed change */
 526 #endif
 527         dev->open            = smsc_ircc_net_open;
 528         dev->stop            = smsc_ircc_net_close;
 529         dev->do_ioctl        = smsc_ircc_net_ioctl;
 530
 531         self = netdev_priv(dev);
 532         self->netdev = dev;
 533
 534         /* Make ifconfig display some details */
 535         dev->base_addr = self->io.fir_base = fir_base;
 536         dev->irq = self->io.irq = irq;
 537
 538         /* Need to store self somewhere */
 539         dev_self[dev_count] = self;
 540         spin_lock_init(&self->lock);
 541
 542         self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE;
 543         self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE;
 544
 545         self->rx_buff.head =
 546                 dma_alloc_coherent(NULL, self->rx_buff.truesize,
 547                                    &self->rx_buff_dma, GFP_KERNEL);
 548         if (self->rx_buff.head == NULL) {
 549                 IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n",
 550                            driver_name);
 551                 goto err_out2;
 552         }
 553
 554         self->tx_buff.head =
 555                 dma_alloc_coherent(NULL, self->tx_buff.truesize,
 556                                    &self->tx_buff_dma, GFP_KERNEL);
 557         if (self->tx_buff.head == NULL) {
 558                 IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n",
 559                            driver_name);
 560                 goto err_out3;
 561         }
 562
 563         memset(self->rx_buff.head, 0, self->rx_buff.truesize);
 564         memset(self->tx_buff.head, 0, self->tx_buff.truesize);
 565
 566         self->rx_buff.in_frame = FALSE;
 567         self->rx_buff.state = OUTSIDE_FRAME;
 568         self->tx_buff.data = self->tx_buff.head;
 569         self->rx_buff.data = self->rx_buff.head;
 570
 571         smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq);
 572         smsc_ircc_setup_qos(self);
 573         smsc_ircc_init_chip(self);
 574
 575         if (ircc_transceiver > 0  &&
 576             ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS)
 577                 self->transceiver = ircc_transceiver;
 578         else
 579                 smsc_ircc_probe_transceiver(self);
 580
 581         err = register_netdev(self->netdev);
 582         if (err) {
 583                 IRDA_ERROR("%s, Network device registration failed!\n",
 584                            driver_name);
 585                 goto err_out4;
 586         }
 587
 588         self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME,
 589                                                       dev_count, NULL, 0);
 590         if (IS_ERR(self->pldev)) {
 591                 err = PTR_ERR(self->pldev);
 592                 goto err_out5;
 593         }
 594         platform_set_drvdata(self->pldev, self);
 595
 596         IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
 597         dev_count++;
 598
 599         return 0;
 600
 601  err_out5:
 602         unregister_netdev(self->netdev);
 603
 604  err_out4:
 605         dma_free_coherent(NULL, self->tx_buff.truesize,
 606                           self->tx_buff.head, self->tx_buff_dma);
 607  err_out3:
 608         dma_free_coherent(NULL, self->rx_buff.truesize,
 609                           self->rx_buff.head, self->rx_buff_dma);
 610  err_out2:
 611         free_netdev(self->netdev);
 612         dev_self[dev_count] = NULL;
 613  err_out1:
 614         release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
 615         release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
 616  err_out:
 617         return err;
 618 }
 619
 620 /*
 621  * Function smsc_ircc_present(fir_base, sir_base)
 622  *
 623  *    Check the smsc-ircc chip presence
 624  *
 625  */
 626 static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base)
 627 {
 628         unsigned char low, high, chip, config, dma, irq, version;
 629
 630         if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT,
 631                             driver_name)) {
 632                 IRDA_WARNING("%s: can't get fir_base of 0x%03x\n",
 633                              __func__, fir_base);
 634                 goto out1;
 635         }
 636
 637         if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT,
 638                             driver_name)) {
 639                 IRDA_WARNING("%s: can't get sir_base of 0x%03x\n",
 640                              __func__, sir_base);
 641                 goto out2;
 642         }
 643
 644         register_bank(fir_base, 3);
 645
 646         high    = inb(fir_base + IRCC_ID_HIGH);
 647         low     = inb(fir_base + IRCC_ID_LOW);
 648         chip    = inb(fir_base + IRCC_CHIP_ID);
 649         version = inb(fir_base + IRCC_VERSION);
 650         config  = inb(fir_base + IRCC_INTERFACE);
 651         dma     = config & IRCC_INTERFACE_DMA_MASK;
 652         irq     = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
 653
 654         if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) {
 655                 IRDA_WARNING("%s(), addr 0x%04x - no device found!\n",
 656                              __func__, fir_base);
 657                 goto out3;
 658         }
 659         IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, "
 660                      "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n",
 661                      chip & 0x0f, version, fir_base, sir_base, dma, irq);
 662
 663         return 0;
 664
 665  out3:
 666         release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
 667  out2:
 668         release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
 669  out1:
 670         return -ENODEV;
 671 }
 672
 673 /*
 674  * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq)
 675  *
 676  *    Setup I/O
 677  *
 678  */
 679 static void smsc_ircc_setup_io(struct smsc_ircc_cb *self,
 680                                unsigned int fir_base, unsigned int sir_base,
 681                                u8 dma, u8 irq)
 682 {
 683         unsigned char config, chip_dma, chip_irq;
 684
 685         register_bank(fir_base, 3);
 686         config = inb(fir_base + IRCC_INTERFACE);
 687         chip_dma = config & IRCC_INTERFACE_DMA_MASK;
 688         chip_irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
 689
 690         self->io.fir_base  = fir_base;
 691         self->io.sir_base  = sir_base;
 692         self->io.fir_ext   = SMSC_IRCC2_FIR_CHIP_IO_EXTENT;
 693         self->io.sir_ext   = SMSC_IRCC2_SIR_CHIP_IO_EXTENT;
 694         self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE;
 695         self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED;
 696
 697         if (irq != IRQ_INVAL) {
 698                 if (irq != chip_irq)
 699                         IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n",
 700                                      driver_name, chip_irq, irq);
 701                 self->io.irq = irq;
 702         } else
 703                 self->io.irq = chip_irq;
 704
 705         if (dma != DMA_INVAL) {
 706                 if (dma != chip_dma)
 707                         IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n",
 708                                      driver_name, chip_dma, dma);
 709                 self->io.dma = dma;
 710         } else
 711                 self->io.dma = chip_dma;
 712
 713 }
 714
 715 /*
 716  * Function smsc_ircc_setup_qos(self)
 717  *
 718  *    Setup qos
 719  *
 720  */
 721 static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self)
 722 {
 723         /* Initialize QoS for this device */
 724         irda_init_max_qos_capabilies(&self->qos);
 725
 726         self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
 727                 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8);
 728
 729         self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME;
 730         self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE;
 731         irda_qos_bits_to_value(&self->qos);
 732 }
 733
 734 /*
 735  * Function smsc_ircc_init_chip(self)
 736  *
 737  *    Init chip
 738  *
 739  */
 740 static void smsc_ircc_init_chip(struct smsc_ircc_cb *self)
 741 {
 742         int iobase = self->io.fir_base;
 743
 744         register_bank(iobase, 0);
 745         outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
 746         outb(0x00, iobase + IRCC_MASTER);
 747
 748         register_bank(iobase, 1);
 749         outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | IRCC_CFGA_IRDA_SIR_A),
 750              iobase + IRCC_SCE_CFGA);
 751
 752 #ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */
 753         outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM),
 754              iobase + IRCC_SCE_CFGB);
 755 #else
 756         outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
 757              iobase + IRCC_SCE_CFGB);
 758 #endif
 759         (void) inb(iobase + IRCC_FIFO_THRESHOLD);
 760         outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD);
 761
 762         register_bank(iobase, 4);
 763         outb((inb(iobase + IRCC_CONTROL) & 0x30), iobase + IRCC_CONTROL);
 764
 765         register_bank(iobase, 0);
 766         outb(0, iobase + IRCC_LCR_A);
 767
 768         smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
 769
 770         /* Power on device */
 771         outb(0x00, iobase + IRCC_MASTER);
 772 }
 773
 774 /*
 775  * Function smsc_ircc_net_ioctl (dev, rq, cmd)
 776  *
 777  *    Process IOCTL commands for this device
 778  *
 779  */
 780 static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 781 {
 782         struct if_irda_req *irq = (struct if_irda_req *) rq;
 783         struct smsc_ircc_cb *self;
 784         unsigned long flags;
 785         int ret = 0;
 786
 787         IRDA_ASSERT(dev != NULL, return -1;);
 788
 789         self = netdev_priv(dev);
 790
 791         IRDA_ASSERT(self != NULL, return -1;);
 792
 793         IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__, dev->name, cmd);
 794
 795         switch (cmd) {
 796         case SIOCSBANDWIDTH: /* Set bandwidth */
 797                 if (!capable(CAP_NET_ADMIN))
 798                         ret = -EPERM;
 799                 else {
 800                         /* Make sure we are the only one touching
 801                          * self->io.speed and the hardware - Jean II */
 802                         spin_lock_irqsave(&self->lock, flags);
 803                         smsc_ircc_change_speed(self, irq->ifr_baudrate);
 804                         spin_unlock_irqrestore(&self->lock, flags);
 805                 }
 806                 break;
 807         case SIOCSMEDIABUSY: /* Set media busy */
 808                 if (!capable(CAP_NET_ADMIN)) {
 809                         ret = -EPERM;
 810                         break;
 811                 }
 812
 813                 irda_device_set_media_busy(self->netdev, TRUE);
 814                 break;
 815         case SIOCGRECEIVING: /* Check if we are receiving right now */
 816                 irq->ifr_receiving = smsc_ircc_is_receiving(self);
 817                 break;
 818         #if 0
 819         case SIOCSDTRRTS:
 820                 if (!capable(CAP_NET_ADMIN)) {
 821                         ret = -EPERM;
 822                         break;
 823                 }
 824                 smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts);
 825                 break;
 826         #endif
 827         default:
 828                 ret = -EOPNOTSUPP;
 829         }
 830
 831         return ret;
 832 }
 833
 834 #if SMSC_IRCC2_C_NET_TIMEOUT
 835 /*
 836  * Function smsc_ircc_timeout (struct net_device *dev)
 837  *
 838  *    The networking timeout management.
 839  *
 840  */
 841
 842 static void smsc_ircc_timeout(struct net_device *dev)
 843 {
 844         struct smsc_ircc_cb *self = netdev_priv(dev);
 845         unsigned long flags;
 846
 847         IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n",
 848                      dev->name, self->io.speed);
 849         spin_lock_irqsave(&self->lock, flags);
 850         smsc_ircc_sir_start(self);
 851         smsc_ircc_change_speed(self, self->io.speed);
 852         dev->trans_start = jiffies;
 853         netif_wake_queue(dev);
 854         spin_unlock_irqrestore(&self->lock, flags);
 855 }
 856 #endif
 857
 858 /*
 859  * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev)
 860  *
 861  *    Transmits the current frame until FIFO is full, then
 862  *    waits until the next transmit interrupt, and continues until the
 863  *    frame is transmitted.
 864  */
 865 static int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev)
 866 {
 867         struct smsc_ircc_cb *self;
 868         unsigned long flags;
 869         s32 speed;
 870
 871         IRDA_DEBUG(1, "%s\n", __func__);
 872
 873         IRDA_ASSERT(dev != NULL, return 0;);
 874
 875         self = netdev_priv(dev);
 876         IRDA_ASSERT(self != NULL, return 0;);
 877
 878         netif_stop_queue(dev);
 879
 880         /* Make sure test of self->io.speed & speed change are atomic */
 881         spin_lock_irqsave(&self->lock, flags);
 882
 883         /* Check if we need to change the speed */
 884         speed = irda_get_next_speed(skb);
 885         if (speed != self->io.speed && speed != -1) {
 886                 /* Check for empty frame */
 887                 if (!skb->len) {
 888                         /*
 889                          * We send frames one by one in SIR mode (no
 890                          * pipelining), so at this point, if we were sending
 891                          * a previous frame, we just received the interrupt
 892                          * telling us it is finished (UART_IIR_THRI).
 893                          * Therefore, waiting for the transmitter to really
 894                          * finish draining the fifo won't take too long.
 895                          * And the interrupt handler is not expected to run.
 896                          * - Jean II */
 897                         smsc_ircc_sir_wait_hw_transmitter_finish(self);
 898                         smsc_ircc_change_speed(self, speed);
 899                         spin_unlock_irqrestore(&self->lock, flags);
 900                         dev_kfree_skb(skb);
 901                         return 0;
 902                 }
 903                 self->new_speed = speed;
 904         }
 905
 906         /* Init tx buffer */
 907         self->tx_buff.data = self->tx_buff.head;
 908
 909         /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
 910         self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
 911                                            self->tx_buff.truesize);
 912
 913         dev->stats.tx_bytes += self->tx_buff.len;
 914
 915         /* Turn on transmit finished interrupt. Will fire immediately!  */
 916         outb(UART_IER_THRI, self->io.sir_base + UART_IER);
 917
 918         spin_unlock_irqrestore(&self->lock, flags);
 919
 920         dev_kfree_skb(skb);
 921
 922         return 0;
 923 }
 924
 925 /*
 926  * Function smsc_ircc_set_fir_speed (self, baud)
 927  *
 928  *    Change the speed of the device
 929  *
 930  */
 931 static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed)
 932 {
 933         int fir_base, ir_mode, ctrl, fast;
 934
 935         IRDA_ASSERT(self != NULL, return;);
 936         fir_base = self->io.fir_base;
 937
 938         self->io.speed = speed;
 939
 940         switch (speed) {
 941         default:
 942         case 576000:
 943                 ir_mode = IRCC_CFGA_IRDA_HDLC;
 944                 ctrl = IRCC_CRC;
 945                 fast = 0;
 946                 IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __func__);
 947                 break;
 948         case 1152000:
 949                 ir_mode = IRCC_CFGA_IRDA_HDLC;
 950                 ctrl = IRCC_1152 | IRCC_CRC;
 951                 fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA;
 952                 IRDA_DEBUG(0, "%s(), handling baud of 1152000\n",
 953                            __func__);
 954                 break;
 955         case 4000000:
 956                 ir_mode = IRCC_CFGA_IRDA_4PPM;
 957                 ctrl = IRCC_CRC;
 958                 fast = IRCC_LCR_A_FAST;
 959                 IRDA_DEBUG(0, "%s(), handling baud of 4000000\n",
 960                            __func__);
 961                 break;
 962         }
 963         #if 0
 964         Now in tranceiver!
 965         /* This causes an interrupt */
 966         register_bank(fir_base, 0);
 967         outb((inb(fir_base + IRCC_LCR_A) &  0xbf) | fast, fir_base + IRCC_LCR_A);
 968         #endif
 969
 970         register_bank(fir_base, 1);
 971         outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | ir_mode), fir_base + IRCC_SCE_CFGA);
 972
 973         register_bank(fir_base, 4);
 974         outb((inb(fir_base + IRCC_CONTROL) & 0x30) | ctrl, fir_base + IRCC_CONTROL);
 975 }
 976
 977 /*
 978  * Function smsc_ircc_fir_start(self)
 979  *
 980  *    Change the speed of the device
 981  *
 982  */
 983 static void smsc_ircc_fir_start(struct smsc_ircc_cb *self)
 984 {
 985         struct net_device *dev;
 986         int fir_base;
 987
 988         IRDA_DEBUG(1, "%s\n", __func__);
 989
 990         IRDA_ASSERT(self != NULL, return;);
 991         dev = self->netdev;
 992         IRDA_ASSERT(dev != NULL, return;);
 993
 994         fir_base = self->io.fir_base;
 995
 996         /* Reset everything */
 997
 998         /* Install FIR transmit handler */
 999         dev->hard_start_xmit = smsc_ircc_hard_xmit_fir;
1000
1001         /* Clear FIFO */
1002         outb(inb(fir_base + IRCC_LCR_A) | IRCC_LCR_A_FIFO_RESET, fir_base + IRCC_LCR_A);
1003
1004         /* Enable interrupt */
1005         /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/
1006
1007         register_bank(fir_base, 1);
1008
1009         /* Select the TX/RX interface */
1010 #ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */
1011         outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM),
1012              fir_base + IRCC_SCE_CFGB);
1013 #else
1014         outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
1015              fir_base + IRCC_SCE_CFGB);
1016 #endif
1017         (void) inb(fir_base + IRCC_FIFO_THRESHOLD);
1018
1019         /* Enable SCE interrupts */
1020         outb(0, fir_base + IRCC_MASTER);
1021         register_bank(fir_base, 0);
1022         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, fir_base + IRCC_IER);
1023         outb(IRCC_MASTER_INT_EN, fir_base + IRCC_MASTER);
1024 }
1025
1026 /*
1027  * Function smsc_ircc_fir_stop(self, baud)
1028  *
1029  *    Change the speed of the device
1030  *
1031  */
1032 static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self)
1033 {
1034         int fir_base;
1035
1036         IRDA_DEBUG(1, "%s\n", __func__);
1037
1038         IRDA_ASSERT(self != NULL, return;);
1039
1040         fir_base = self->io.fir_base;
1041         register_bank(fir_base, 0);
1042         /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/
1043         outb(inb(fir_base + IRCC_LCR_B) & IRCC_LCR_B_SIP_ENABLE, fir_base + IRCC_LCR_B);
1044 }
1045
1046
1047 /*
1048  * Function smsc_ircc_change_speed(self, baud)
1049  *
1050  *    Change the speed of the device
1051  *
1052  * This function *must* be called with spinlock held, because it may
1053  * be called from the irq handler. - Jean II
1054  */
1055 static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed)
1056 {
1057         struct net_device *dev;
1058         int last_speed_was_sir;
1059
1060         IRDA_DEBUG(0, "%s() changing speed to: %d\n", __func__, speed);
1061
1062         IRDA_ASSERT(self != NULL, return;);
1063         dev = self->netdev;
1064
1065         last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED;
1066
1067         #if 0
1068         /* Temp Hack */
1069         speed= 1152000;
1070         self->io.speed = speed;
1071         last_speed_was_sir = 0;
1072         smsc_ircc_fir_start(self);
1073         #endif
1074
1075         if (self->io.speed == 0)
1076                 smsc_ircc_sir_start(self);
1077
1078         #if 0
1079         if (!last_speed_was_sir) speed = self->io.speed;
1080         #endif
1081
1082         if (self->io.speed != speed)
1083                 smsc_ircc_set_transceiver_for_speed(self, speed);
1084
1085         self->io.speed = speed;
1086
1087         if (speed <= SMSC_IRCC2_MAX_SIR_SPEED) {
1088                 if (!last_speed_was_sir) {
1089                         smsc_ircc_fir_stop(self);
1090                         smsc_ircc_sir_start(self);
1091                 }
1092                 smsc_ircc_set_sir_speed(self, speed);
1093         } else {
1094                 if (last_speed_was_sir) {
1095                         #if SMSC_IRCC2_C_SIR_STOP
1096                         smsc_ircc_sir_stop(self);
1097                         #endif
1098                         smsc_ircc_fir_start(self);
1099                 }
1100                 smsc_ircc_set_fir_speed(self, speed);
1101
1102                 #if 0
1103                 self->tx_buff.len = 10;
1104                 self->tx_buff.data = self->tx_buff.head;
1105
1106                 smsc_ircc_dma_xmit(self, 4000);
1107                 #endif
1108                 /* Be ready for incoming frames */
1109                 smsc_ircc_dma_receive(self);
1110         }
1111
1112         netif_wake_queue(dev);
1113 }
1114
1115 /*
1116  * Function smsc_ircc_set_sir_speed (self, speed)
1117  *
1118  *    Set speed of IrDA port to specified baudrate
1119  *
1120  */
1121 static void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, __u32 speed)
1122 {
1123         int iobase;
1124         int fcr;    /* FIFO control reg */
1125         int lcr;    /* Line control reg */
1126         int divisor;
1127
1128         IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __func__, speed);
1129
1130         IRDA_ASSERT(self != NULL, return;);
1131         iobase = self->io.sir_base;
1132
1133         /* Update accounting for new speed */
1134         self->io.speed = speed;
1135
1136         /* Turn off interrupts */
1137         outb(0, iobase + UART_IER);
1138
1139         divisor = SMSC_IRCC2_MAX_SIR_SPEED / speed;
1140
1141         fcr = UART_FCR_ENABLE_FIFO;
1142
1143         /*
1144          * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1145          * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
1146          * about this timeout since it will always be fast enough.
1147          */
1148         fcr |= self->io.speed < 38400 ?
1149                 UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14;
1150
1151         /* IrDA ports use 8N1 */
1152         lcr = UART_LCR_WLEN8;
1153
1154         outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */
1155         outb(divisor & 0xff,      iobase + UART_DLL); /* Set speed */
1156         outb(divisor >> 8,        iobase + UART_DLM);
1157         outb(lcr,                 iobase + UART_LCR); /* Set 8N1 */
1158         outb(fcr,                 iobase + UART_FCR); /* Enable FIFO's */
1159
1160         /* Turn on interrups */
1161         outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
1162
1163         IRDA_DEBUG(2, "%s() speed changed to: %d\n", __func__, speed);
1164 }
1165
1166
1167 /*
1168  * Function smsc_ircc_hard_xmit_fir (skb, dev)
1169  *
1170  *    Transmit the frame!
1171  *
1172  */
1173 static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev)
1174 {
1175         struct smsc_ircc_cb *self;
1176         unsigned long flags;
1177         s32 speed;
1178         int mtt;
1179
1180         IRDA_ASSERT(dev != NULL, return 0;);
1181         self = netdev_priv(dev);
1182         IRDA_ASSERT(self != NULL, return 0;);
1183
1184         netif_stop_queue(dev);
1185
1186         /* Make sure test of self->io.speed & speed change are atomic */
1187         spin_lock_irqsave(&self->lock, flags);
1188
1189         /* Check if we need to change the speed after this frame */
1190         speed = irda_get_next_speed(skb);
1191         if (speed != self->io.speed && speed != -1) {
1192                 /* Check for empty frame */
1193                 if (!skb->len) {
1194                         /* Note : you should make sure that speed changes
1195                          * are not going to corrupt any outgoing frame.
1196                          * Look at nsc-ircc for the gory details - Jean II */
1197                         smsc_ircc_change_speed(self, speed);
1198                         spin_unlock_irqrestore(&self->lock, flags);
1199                         dev_kfree_skb(skb);
1200                         return 0;
1201                 }
1202
1203                 self->new_speed = speed;
1204         }
1205
1206         skb_copy_from_linear_data(skb, self->tx_buff.head, skb->len);
1207
1208         self->tx_buff.len = skb->len;
1209         self->tx_buff.data = self->tx_buff.head;
1210
1211         mtt = irda_get_mtt(skb);
1212         if (mtt) {
1213                 int bofs;
1214
1215                 /*
1216                  * Compute how many BOFs (STA or PA's) we need to waste the
1217                  * min turn time given the speed of the link.
1218                  */
1219                 bofs = mtt * (self->io.speed / 1000) / 8000;
1220                 if (bofs > 4095)
1221                         bofs = 4095;
1222
1223                 smsc_ircc_dma_xmit(self, bofs);
1224         } else {
1225                 /* Transmit frame */
1226                 smsc_ircc_dma_xmit(self, 0);
1227         }
1228
1229         spin_unlock_irqrestore(&self->lock, flags);
1230         dev_kfree_skb(skb);
1231
1232         return 0;
1233 }
1234
1235 /*
1236  * Function smsc_ircc_dma_xmit (self, bofs)
1237  *
1238  *    Transmit data using DMA
1239  *
1240  */
1241 static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs)
1242 {
1243         int iobase = self->io.fir_base;
1244         u8 ctrl;
1245
1246         IRDA_DEBUG(3, "%s\n", __func__);
1247 #if 1
1248         /* Disable Rx */
1249         register_bank(iobase, 0);
1250         outb(0x00, iobase + IRCC_LCR_B);
1251 #endif
1252         register_bank(iobase, 1);
1253         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1254              iobase + IRCC_SCE_CFGB);
1255
1256         self->io.direction = IO_XMIT;
1257
1258         /* Set BOF additional count for generating the min turn time */
1259         register_bank(iobase, 4);
1260         outb(bofs & 0xff, iobase + IRCC_BOF_COUNT_LO);
1261         ctrl = inb(iobase + IRCC_CONTROL) & 0xf0;
1262         outb(ctrl | ((bofs >> 8) & 0x0f), iobase + IRCC_BOF_COUNT_HI);
1263
1264         /* Set max Tx frame size */
1265         outb(self->tx_buff.len >> 8, iobase + IRCC_TX_SIZE_HI);
1266         outb(self->tx_buff.len & 0xff, iobase + IRCC_TX_SIZE_LO);
1267
1268         /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/
1269
1270         /* Enable burst mode chip Tx DMA */
1271         register_bank(iobase, 1);
1272         outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE |
1273              IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB);
1274
1275         /* Setup DMA controller (must be done after enabling chip DMA) */
1276         irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len,
1277                        DMA_TX_MODE);
1278
1279         /* Enable interrupt */
1280
1281         register_bank(iobase, 0);
1282         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1283         outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER);
1284
1285         /* Enable transmit */
1286         outb(IRCC_LCR_B_SCE_TRANSMIT | IRCC_LCR_B_SIP_ENABLE, iobase + IRCC_LCR_B);
1287 }
1288
1289 /*
1290  * Function smsc_ircc_dma_xmit_complete (self)
1291  *
1292  *    The transfer of a frame in finished. This function will only be called
1293  *    by the interrupt handler
1294  *
1295  */
1296 static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self)
1297 {
1298         int iobase = self->io.fir_base;
1299
1300         IRDA_DEBUG(3, "%s\n", __func__);
1301 #if 0
1302         /* Disable Tx */
1303         register_bank(iobase, 0);
1304         outb(0x00, iobase + IRCC_LCR_B);
1305 #endif
1306         register_bank(iobase, 1);
1307         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1308              iobase + IRCC_SCE_CFGB);
1309
1310         /* Check for underrun! */
1311         register_bank(iobase, 0);
1312         if (inb(iobase + IRCC_LSR) & IRCC_LSR_UNDERRUN) {
1313                 self->netdev->stats.tx_errors++;
1314                 self->netdev->stats.tx_fifo_errors++;
1315
1316                 /* Reset error condition */
1317                 register_bank(iobase, 0);
1318                 outb(IRCC_MASTER_ERROR_RESET, iobase + IRCC_MASTER);
1319                 outb(0x00, iobase + IRCC_MASTER);
1320         } else {
1321                 self->netdev->stats.tx_packets++;
1322                 self->netdev->stats.tx_bytes += self->tx_buff.len;
1323         }
1324
1325         /* Check if it's time to change the speed */
1326         if (self->new_speed) {
1327                 smsc_ircc_change_speed(self, self->new_speed);
1328                 self->new_speed = 0;
1329         }
1330
1331         netif_wake_queue(self->netdev);
1332 }
1333
1334 /*
1335  * Function smsc_ircc_dma_receive(self)
1336  *
1337  *    Get ready for receiving a frame. The device will initiate a DMA
1338  *    if it starts to receive a frame.
1339  *
1340  */
1341 static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self)
1342 {
1343         int iobase = self->io.fir_base;
1344 #if 0
1345         /* Turn off chip DMA */
1346         register_bank(iobase, 1);
1347         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1348              iobase + IRCC_SCE_CFGB);
1349 #endif
1350
1351         /* Disable Tx */
1352         register_bank(iobase, 0);
1353         outb(0x00, iobase + IRCC_LCR_B);
1354
1355         /* Turn off chip DMA */
1356         register_bank(iobase, 1);
1357         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1358              iobase + IRCC_SCE_CFGB);
1359
1360         self->io.direction = IO_RECV;
1361         self->rx_buff.data = self->rx_buff.head;
1362
1363         /* Set max Rx frame size */
1364         register_bank(iobase, 4);
1365         outb((2050 >> 8) & 0x0f, iobase + IRCC_RX_SIZE_HI);
1366         outb(2050 & 0xff, iobase + IRCC_RX_SIZE_LO);
1367
1368         /* Setup DMA controller */
1369         irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1370                        DMA_RX_MODE);
1371
1372         /* Enable burst mode chip Rx DMA */
1373         register_bank(iobase, 1);
1374         outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE |
1375              IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB);
1376
1377         /* Enable interrupt */
1378         register_bank(iobase, 0);
1379         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1380         outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER);
1381
1382         /* Enable receiver */
1383         register_bank(iobase, 0);
1384         outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE,
1385              iobase + IRCC_LCR_B);
1386
1387         return 0;
1388 }
1389
1390 /*
1391  * Function smsc_ircc_dma_receive_complete(self)
1392  *
1393  *    Finished with receiving frames
1394  *
1395  */
1396 static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self)
1397 {
1398         struct sk_buff *skb;
1399         int len, msgcnt, lsr;
1400         int iobase = self->io.fir_base;
1401
1402         register_bank(iobase, 0);
1403
1404         IRDA_DEBUG(3, "%s\n", __func__);
1405 #if 0
1406         /* Disable Rx */
1407         register_bank(iobase, 0);
1408         outb(0x00, iobase + IRCC_LCR_B);
1409 #endif
1410         register_bank(iobase, 0);
1411         outb(inb(iobase + IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase + IRCC_LSAR);
1412         lsr= inb(iobase + IRCC_LSR);
1413         msgcnt = inb(iobase + IRCC_LCR_B) & 0x08;
1414
1415         IRDA_DEBUG(2, "%s: dma count = %d\n", __func__,
1416                    get_dma_residue(self->io.dma));
1417
1418         len = self->rx_buff.truesize - get_dma_residue(self->io.dma);
1419
1420         /* Look for errors */
1421         if (lsr & (IRCC_LSR_FRAME_ERROR | IRCC_LSR_CRC_ERROR | IRCC_LSR_SIZE_ERROR)) {
1422                 self->netdev->stats.rx_errors++;
1423                 if (lsr & IRCC_LSR_FRAME_ERROR)
1424                         self->netdev->stats.rx_frame_errors++;
1425                 if (lsr & IRCC_LSR_CRC_ERROR)
1426                         self->netdev->stats.rx_crc_errors++;
1427                 if (lsr & IRCC_LSR_SIZE_ERROR)
1428                         self->netdev->stats.rx_length_errors++;
1429                 if (lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN))
1430                         self->netdev->stats.rx_length_errors++;
1431                 return;
1432         }
1433
1434         /* Remove CRC */
1435         len -= self->io.speed < 4000000 ? 2 : 4;
1436
1437         if (len < 2 || len > 2050) {
1438                 IRDA_WARNING("%s(), bogus len=%d\n", __func__, len);
1439                 return;
1440         }
1441         IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __func__, msgcnt, len);
1442
1443         skb = dev_alloc_skb(len + 1);
1444         if (!skb) {
1445                 IRDA_WARNING("%s(), memory squeeze, dropping frame.\n",
1446                              __func__);
1447                 return;
1448         }
1449         /* Make sure IP header gets aligned */
1450         skb_reserve(skb, 1);
1451
1452         memcpy(skb_put(skb, len), self->rx_buff.data, len);
1453         self->netdev->stats.rx_packets++;
1454         self->netdev->stats.rx_bytes += len;
1455
1456         skb->dev = self->netdev;
1457         skb_reset_mac_header(skb);
1458         skb->protocol = htons(ETH_P_IRDA);
1459         netif_rx(skb);
1460 }
1461
1462 /*
1463  * Function smsc_ircc_sir_receive (self)
1464  *
1465  *    Receive one frame from the infrared port
1466  *
1467  */
1468 static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self)
1469 {
1470         int boguscount = 0;
1471         int iobase;
1472
1473         IRDA_ASSERT(self != NULL, return;);
1474
1475         iobase = self->io.sir_base;
1476
1477         /*
1478          * Receive all characters in Rx FIFO, unwrap and unstuff them.
1479          * async_unwrap_char will deliver all found frames
1480          */
1481         do {
1482                 async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff,
1483                                   inb(iobase + UART_RX));
1484
1485                 /* Make sure we don't stay here to long */
1486                 if (boguscount++ > 32) {
1487                         IRDA_DEBUG(2, "%s(), breaking!\n", __func__);
1488                         break;
1489                 }
1490         } while (inb(iobase + UART_LSR) & UART_LSR_DR);
1491 }
1492
1493
1494 /*
1495  * Function smsc_ircc_interrupt (irq, dev_id, regs)
1496  *
1497  *    An interrupt from the chip has arrived. Time to do some work
1498  *
1499  */
1500 static irqreturn_t smsc_ircc_interrupt(int dummy, void *dev_id)
1501 {
1502         struct net_device *dev = dev_id;
1503         struct smsc_ircc_cb *self = netdev_priv(dev);
1504         int iobase, iir, lcra, lsr;
1505         irqreturn_t ret = IRQ_NONE;
1506
1507         /* Serialise the interrupt handler in various CPUs, stop Tx path */
1508         spin_lock(&self->lock);
1509
1510         /* Check if we should use the SIR interrupt handler */
1511         if (self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED) {
1512                 ret = smsc_ircc_interrupt_sir(dev);
1513                 goto irq_ret_unlock;
1514         }
1515
1516         iobase = self->io.fir_base;
1517
1518         register_bank(iobase, 0);
1519         iir = inb(iobase + IRCC_IIR);
1520         if (iir == 0)
1521                 goto irq_ret_unlock;
1522         ret = IRQ_HANDLED;
1523
1524         /* Disable interrupts */
1525         outb(0, iobase + IRCC_IER);
1526         lcra = inb(iobase + IRCC_LCR_A);
1527         lsr = inb(iobase + IRCC_LSR);
1528
1529         IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __func__, iir);
1530
1531         if (iir & IRCC_IIR_EOM) {
1532                 if (self->io.direction == IO_RECV)
1533                         smsc_ircc_dma_receive_complete(self);
1534                 else
1535                         smsc_ircc_dma_xmit_complete(self);
1536
1537                 smsc_ircc_dma_receive(self);
1538         }
1539
1540         if (iir & IRCC_IIR_ACTIVE_FRAME) {
1541                 /*printk(KERN_WARNING "%s(): Active Frame\n", __func__);*/
1542         }
1543
1544         /* Enable interrupts again */
1545
1546         register_bank(iobase, 0);
1547         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1548
1549  irq_ret_unlock:
1550         spin_unlock(&self->lock);
1551
1552         return ret;
1553 }
1554
1555 /*
1556  * Function irport_interrupt_sir (irq, dev_id)
1557  *
1558  *    Interrupt handler for SIR modes
1559  */
1560 static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev)
1561 {
1562         struct smsc_ircc_cb *self = netdev_priv(dev);
1563         int boguscount = 0;
1564         int iobase;
1565         int iir, lsr;
1566
1567         /* Already locked comming here in smsc_ircc_interrupt() */
1568         /*spin_lock(&self->lock);*/
1569
1570         iobase = self->io.sir_base;
1571
1572         iir = inb(iobase + UART_IIR) & UART_IIR_ID;
1573         if (iir == 0)
1574                 return IRQ_NONE;
1575         while (iir) {
1576                 /* Clear interrupt */
1577                 lsr = inb(iobase + UART_LSR);
1578
1579                 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n",
1580                             __func__, iir, lsr, iobase);
1581
1582                 switch (iir) {
1583                 case UART_IIR_RLSI:
1584                         IRDA_DEBUG(2, "%s(), RLSI\n", __func__);
1585                         break;
1586                 case UART_IIR_RDI:
1587                         /* Receive interrupt */
1588                         smsc_ircc_sir_receive(self);
1589                         break;
1590                 case UART_IIR_THRI:
1591                         if (lsr & UART_LSR_THRE)
1592                                 /* Transmitter ready for data */
1593                                 smsc_ircc_sir_write_wakeup(self);
1594                         break;
1595                 default:
1596                         IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n",
1597                                    __func__, iir);
1598                         break;
1599                 }
1600
1601                 /* Make sure we don't stay here to long */
1602                 if (boguscount++ > 100)
1603                         break;
1604
1605                 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
1606         }
1607         /*spin_unlock(&self->lock);*/
1608         return IRQ_HANDLED;
1609 }
1610
1611
1612 #if 0 /* unused */
1613 /*
1614  * Function ircc_is_receiving (self)
1615  *
1616  *    Return TRUE is we are currently receiving a frame
1617  *
1618  */
1619 static int ircc_is_receiving(struct smsc_ircc_cb *self)
1620 {
1621         int status = FALSE;
1622         /* int iobase; */
1623
1624         IRDA_DEBUG(1, "%s\n", __func__);
1625
1626         IRDA_ASSERT(self != NULL, return FALSE;);
1627
1628         IRDA_DEBUG(0, "%s: dma count = %d\n", __func__,
1629                    get_dma_residue(self->io.dma));
1630
1631         status = (self->rx_buff.state != OUTSIDE_FRAME);
1632
1633         return status;
1634 }
1635 #endif /* unused */
1636
1637 static int smsc_ircc_request_irq(struct smsc_ircc_cb *self)
1638 {
1639         int error;
1640
1641         error = request_irq(self->io.irq, smsc_ircc_interrupt, 0,
1642                             self->netdev->name, self->netdev);
1643         if (error)
1644                 IRDA_DEBUG(0, "%s(), unable to allocate irq=%d, err=%d\n",
1645                            __func__, self->io.irq, error);
1646
1647         return error;
1648 }
1649
1650 static void smsc_ircc_start_interrupts(struct smsc_ircc_cb *self)
1651 {
1652         unsigned long flags;
1653
1654         spin_lock_irqsave(&self->lock, flags);
1655
1656         self->io.speed = 0;
1657         smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
1658
1659         spin_unlock_irqrestore(&self->lock, flags);
1660 }
1661
1662 static void smsc_ircc_stop_interrupts(struct smsc_ircc_cb *self)
1663 {
1664         int iobase = self->io.fir_base;
1665         unsigned long flags;
1666
1667         spin_lock_irqsave(&self->lock, flags);
1668
1669         register_bank(iobase, 0);
1670         outb(0, iobase + IRCC_IER);
1671         outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
1672         outb(0x00, iobase + IRCC_MASTER);
1673
1674         spin_unlock_irqrestore(&self->lock, flags);
1675 }
1676
1677
1678 /*
1679  * Function smsc_ircc_net_open (dev)
1680  *
1681  *    Start the device
1682  *
1683  */
1684 static int smsc_ircc_net_open(struct net_device *dev)
1685 {
1686         struct smsc_ircc_cb *self;
1687         char hwname[16];
1688
1689         IRDA_DEBUG(1, "%s\n", __func__);
1690
1691         IRDA_ASSERT(dev != NULL, return -1;);
1692         self = netdev_priv(dev);
1693         IRDA_ASSERT(self != NULL, return 0;);
1694
1695         if (self->io.suspended) {
1696                 IRDA_DEBUG(0, "%s(), device is suspended\n", __func__);
1697                 return -EAGAIN;
1698         }
1699
1700         if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name,
1701                         (void *) dev)) {
1702                 IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n",
1703                            __func__, self->io.irq);
1704                 return -EAGAIN;
1705         }
1706
1707         smsc_ircc_start_interrupts(self);
1708
1709         /* Give self a hardware name */
1710         /* It would be cool to offer the chip revision here - Jean II */
1711         sprintf(hwname, "SMSC @ 0x%03x", self->io.fir_base);
1712
1713         /*
1714          * Open new IrLAP layer instance, now that everything should be
1715          * initialized properly
1716          */
1717         self->irlap = irlap_open(dev, &self->qos, hwname);
1718
1719         /*
1720          * Always allocate the DMA channel after the IRQ,
1721          * and clean up on failure.
1722          */
1723         if (request_dma(self->io.dma, dev->name)) {
1724                 smsc_ircc_net_close(dev);
1725
1726                 IRDA_WARNING("%s(), unable to allocate DMA=%d\n",
1727                              __func__, self->io.dma);
1728                 return -EAGAIN;
1729         }
1730
1731         netif_start_queue(dev);
1732
1733         return 0;
1734 }
1735
1736 /*
1737  * Function smsc_ircc_net_close (dev)
1738  *
1739  *    Stop the device
1740  *
1741  */
1742 static int smsc_ircc_net_close(struct net_device *dev)
1743 {
1744         struct smsc_ircc_cb *self;
1745
1746         IRDA_DEBUG(1, "%s\n", __func__);
1747
1748         IRDA_ASSERT(dev != NULL, return -1;);
1749         self = netdev_priv(dev);
1750         IRDA_ASSERT(self != NULL, return 0;);
1751
1752         /* Stop device */
1753         netif_stop_queue(dev);
1754
1755         /* Stop and remove instance of IrLAP */
1756         if (self->irlap)
1757                 irlap_close(self->irlap);
1758         self->irlap = NULL;
1759
1760         smsc_ircc_stop_interrupts(self);
1761
1762         /* if we are called from smsc_ircc_resume we don't have IRQ reserved */
1763         if (!self->io.suspended)
1764                 free_irq(self->io.irq, dev);
1765
1766         disable_dma(self->io.dma);
1767         free_dma(self->io.dma);
1768
1769         return 0;
1770 }
1771
1772 static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state)
1773 {
1774         struct smsc_ircc_cb *self = platform_get_drvdata(dev);
1775
1776         if (!self->io.suspended) {
1777                 IRDA_DEBUG(1, "%s, Suspending\n", driver_name);
1778
1779                 rtnl_lock();
1780                 if (netif_running(self->netdev)) {
1781                         netif_device_detach(self->netdev);
1782                         smsc_ircc_stop_interrupts(self);
1783                         free_irq(self->io.irq, self->netdev);
1784                         disable_dma(self->io.dma);
1785                 }
1786                 self->io.suspended = 1;
1787                 rtnl_unlock();
1788         }
1789
1790         return 0;
1791 }
1792
1793 static int smsc_ircc_resume(struct platform_device *dev)
1794 {
1795         struct smsc_ircc_cb *self = platform_get_drvdata(dev);
1796
1797         if (self->io.suspended) {
1798                 IRDA_DEBUG(1, "%s, Waking up\n", driver_name);
1799
1800                 rtnl_lock();
1801                 smsc_ircc_init_chip(self);
1802                 if (netif_running(self->netdev)) {
1803                         if (smsc_ircc_request_irq(self)) {
1804                                 /*
1805                                  * Don't fail resume process, just kill this
1806                                  * network interface
1807                                  */
1808                                 unregister_netdevice(self->netdev);
1809                         } else {
1810                                 enable_dma(self->io.dma);
1811                                 smsc_ircc_start_interrupts(self);
1812                                 netif_device_attach(self->netdev);
1813                         }
1814                 }
1815                 self->io.suspended = 0;
1816                 rtnl_unlock();
1817         }
1818         return 0;
1819 }
1820
1821 /*
1822  * Function smsc_ircc_close (self)
1823  *
1824  *    Close driver instance
1825  *
1826  */
1827 static int __exit smsc_ircc_close(struct smsc_ircc_cb *self)
1828 {
1829         IRDA_DEBUG(1, "%s\n", __func__);
1830
1831         IRDA_ASSERT(self != NULL, return -1;);
1832
1833         platform_device_unregister(self->pldev);
1834
1835         /* Remove netdevice */
1836         unregister_netdev(self->netdev);
1837
1838         smsc_ircc_stop_interrupts(self);
1839
1840         /* Release the PORTS that this driver is using */
1841         IRDA_DEBUG(0, "%s(), releasing 0x%03x\n",  __func__,
1842                    self->io.fir_base);
1843
1844         release_region(self->io.fir_base, self->io.fir_ext);
1845
1846         IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __func__,
1847                    self->io.sir_base);
1848
1849         release_region(self->io.sir_base, self->io.sir_ext);
1850
1851         if (self->tx_buff.head)
1852                 dma_free_coherent(NULL, self->tx_buff.truesize,
1853                                   self->tx_buff.head, self->tx_buff_dma);
1854
1855         if (self->rx_buff.head)
1856                 dma_free_coherent(NULL, self->rx_buff.truesize,
1857                                   self->rx_buff.head, self->rx_buff_dma);
1858
1859         free_netdev(self->netdev);
1860
1861         return 0;
1862 }
1863
1864 static void __exit smsc_ircc_cleanup(void)
1865 {
1866         int i;
1867
1868         IRDA_DEBUG(1, "%s\n", __func__);
1869
1870         for (i = 0; i < 2; i++) {
1871                 if (dev_self[i])
1872                         smsc_ircc_close(dev_self[i]);
1873         }
1874
1875         if (pnp_driver_registered)
1876                 pnp_unregister_driver(&smsc_ircc_pnp_driver);
1877
1878         platform_driver_unregister(&smsc_ircc_driver);
1879 }
1880
1881 /*
1882  *      Start SIR operations
1883  *
1884  * This function *must* be called with spinlock held, because it may
1885  * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II
1886  */
1887 static void smsc_ircc_sir_start(struct smsc_ircc_cb *self)
1888 {
1889         struct net_device *dev;
1890         int fir_base, sir_base;
1891
1892         IRDA_DEBUG(3, "%s\n", __func__);
1893
1894         IRDA_ASSERT(self != NULL, return;);
1895         dev = self->netdev;
1896         IRDA_ASSERT(dev != NULL, return;);
1897         dev->hard_start_xmit = &smsc_ircc_hard_xmit_sir;
1898
1899         fir_base = self->io.fir_base;
1900         sir_base = self->io.sir_base;
1901
1902         /* Reset everything */
1903         outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);
1904
1905         #if SMSC_IRCC2_C_SIR_STOP
1906         /*smsc_ircc_sir_stop(self);*/
1907         #endif
1908
1909         register_bank(fir_base, 1);
1910         outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | IRCC_CFGA_IRDA_SIR_A), fir_base + IRCC_SCE_CFGA);
1911
1912         /* Initialize UART */
1913         outb(UART_LCR_WLEN8, sir_base + UART_LCR);  /* Reset DLAB */
1914         outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), sir_base + UART_MCR);
1915
1916         /* Turn on interrups */
1917         outb(UART_IER_RLSI | UART_IER_RDI |UART_IER_THRI, sir_base + UART_IER);
1918
1919         IRDA_DEBUG(3, "%s() - exit\n", __func__);
1920
1921         outb(0x00, fir_base + IRCC_MASTER);
1922 }
1923
1924 #if SMSC_IRCC2_C_SIR_STOP
1925 void smsc_ircc_sir_stop(struct smsc_ircc_cb *self)
1926 {
1927         int iobase;
1928
1929         IRDA_DEBUG(3, "%s\n", __func__);
1930         iobase = self->io.sir_base;
1931
1932         /* Reset UART */
1933         outb(0, iobase + UART_MCR);
1934
1935         /* Turn off interrupts */
1936         outb(0, iobase + UART_IER);
1937 }
1938 #endif
1939
1940 /*
1941  * Function smsc_sir_write_wakeup (self)
1942  *
1943  *    Called by the SIR interrupt handler when there's room for more data.
1944  *    If we have more packets to send, we send them here.
1945  *
1946  */
1947 static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self)
1948 {
1949         int actual = 0;
1950         int iobase;
1951         int fcr;
1952
1953         IRDA_ASSERT(self != NULL, return;);
1954
1955         IRDA_DEBUG(4, "%s\n", __func__);
1956
1957         iobase = self->io.sir_base;
1958
1959         /* Finished with frame?  */
1960         if (self->tx_buff.len > 0)  {
1961                 /* Write data left in transmit buffer */
1962                 actual = smsc_ircc_sir_write(iobase, self->io.fifo_size,
1963                                       self->tx_buff.data, self->tx_buff.len);
1964                 self->tx_buff.data += actual;
1965                 self->tx_buff.len  -= actual;
1966         } else {
1967
1968         /*if (self->tx_buff.len ==0)  {*/
1969
1970                 /*
1971                  *  Now serial buffer is almost free & we can start
1972                  *  transmission of another packet. But first we must check
1973                  *  if we need to change the speed of the hardware
1974                  */
1975                 if (self->new_speed) {
1976                         IRDA_DEBUG(5, "%s(), Changing speed to %d.\n",
1977                                    __func__, self->new_speed);
1978                         smsc_ircc_sir_wait_hw_transmitter_finish(self);
1979                         smsc_ircc_change_speed(self, self->new_speed);
1980                         self->new_speed = 0;
1981                 } else {
1982                         /* Tell network layer that we want more frames */
1983                         netif_wake_queue(self->netdev);
1984                 }
1985                 self->netdev->stats.tx_packets++;
1986
1987                 if (self->io.speed <= 115200) {
1988                         /*
1989                          * Reset Rx FIFO to make sure that all reflected transmit data
1990                          * is discarded. This is needed for half duplex operation
1991                          */
1992                         fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR;
1993                         fcr |= self->io.speed < 38400 ?
1994                                         UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14;
1995
1996                         outb(fcr, iobase + UART_FCR);
1997
1998                         /* Turn on receive interrupts */
1999                         outb(UART_IER_RDI, iobase + UART_IER);
2000                 }
2001         }
2002 }
2003
2004 /*
2005  * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len)
2006  *
2007  *    Fill Tx FIFO with transmit data
2008  *
2009  */
2010 static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
2011 {
2012         int actual = 0;
2013
2014         /* Tx FIFO should be empty! */
2015         if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) {
2016                 IRDA_WARNING("%s(), failed, fifo not empty!\n", __func__);
2017                 return 0;
2018         }
2019
2020         /* Fill FIFO with current frame */
2021         while (fifo_size-- > 0 && actual < len) {
2022                 /* Transmit next byte */
2023                 outb(buf[actual], iobase + UART_TX);
2024                 actual++;
2025         }
2026         return actual;
2027 }
2028
2029 /*
2030  * Function smsc_ircc_is_receiving (self)
2031  *
2032  *    Returns true is we are currently receiving data
2033  *
2034  */
2035 static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self)
2036 {
2037         return (self->rx_buff.state != OUTSIDE_FRAME);
2038 }
2039
2040
2041 /*
2042  * Function smsc_ircc_probe_transceiver(self)
2043  *
2044  *    Tries to find the used Transceiver
2045  *
2046  */
2047 static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self)
2048 {
2049         unsigned int    i;
2050
2051         IRDA_ASSERT(self != NULL, return;);
2052
2053         for (i = 0; smsc_transceivers[i].name != NULL; i++)
2054                 if (smsc_transceivers[i].probe(self->io.fir_base)) {
2055                         IRDA_MESSAGE(" %s transceiver found\n",
2056                                      smsc_transceivers[i].name);
2057                         self->transceiver= i + 1;
2058                         return;
2059                 }
2060
2061         IRDA_MESSAGE("No transceiver found. Defaulting to %s\n",
2062                      smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name);
2063
2064         self->transceiver = SMSC_IRCC2_C_DEFAULT_TRANSCEIVER;
2065 }
2066
2067
2068 /*
2069  * Function smsc_ircc_set_transceiver_for_speed(self, speed)
2070  *
2071  *    Set the transceiver according to the speed
2072  *
2073  */
2074 static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed)
2075 {
2076         unsigned int trx;
2077
2078         trx = self->transceiver;
2079         if (trx > 0)
2080                 smsc_transceivers[trx - 1].set_for_speed(self->io.fir_base, speed);
2081 }
2082
2083 /*
2084  * Function smsc_ircc_wait_hw_transmitter_finish ()
2085  *
2086  *    Wait for the real end of HW transmission
2087  *
2088  * The UART is a strict FIFO, and we get called only when we have finished
2089  * pushing data to the FIFO, so the maximum amount of time we must wait
2090  * is only for the FIFO to drain out.
2091  *
2092  * We use a simple calibrated loop. We may need to adjust the loop
2093  * delay (udelay) to balance I/O traffic and latency. And we also need to
2094  * adjust the maximum timeout.
2095  * It would probably be better to wait for the proper interrupt,
2096  * but it doesn't seem to be available.
2097  *
2098  * We can't use jiffies or kernel timers because :
2099  * 1) We are called from the interrupt handler, which disable softirqs,
2100  * so jiffies won't be increased
2101  * 2) Jiffies granularity is usually very coarse (10ms), and we don't
2102  * want to wait that long to detect stuck hardware.
2103  * Jean II
2104  */
2105
2106 static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self)
2107 {
2108         int iobase = self->io.sir_base;
2109         int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US;
2110
2111         /* Calibrated busy loop */
2112         while (count-- > 0 && !(inb(iobase + UART_LSR) & UART_LSR_TEMT))
2113                 udelay(1);
2114
2115         if (count == 0)
2116                 IRDA_DEBUG(0, "%s(): stuck transmitter\n", __func__);
2117 }
2118
2119
2120 /* PROBING
2121  *
2122  * REVISIT we can be told about the device by PNP, and should use that info
2123  * instead of probing hardware and creating a platform_device ...
2124  */
2125
2126 static int __init smsc_ircc_look_for_chips(void)
2127 {
2128         struct smsc_chip_address *address;
2129         char *type;
2130         unsigned int cfg_base, found;
2131
2132         found = 0;
2133         address = possible_addresses;
2134
2135         while (address->cfg_base) {
2136                 cfg_base = address->cfg_base;
2137
2138                 /*printk(KERN_WARNING "%s(): probing: 0x%02x for: 0x%02x\n", __func__, cfg_base, address->type);*/
2139
2140                 if (address->type & SMSCSIO_TYPE_FDC) {
2141                         type = "FDC";
2142                         if (address->type & SMSCSIO_TYPE_FLAT)
2143                                 if (!smsc_superio_flat(fdc_chips_flat, cfg_base, type))
2144                                         found++;
2145
2146                         if (address->type & SMSCSIO_TYPE_PAGED)
2147                                 if (!smsc_superio_paged(fdc_chips_paged, cfg_base, type))
2148                                         found++;
2149                 }
2150                 if (address->type & SMSCSIO_TYPE_LPC) {
2151                         type = "LPC";
2152                         if (address->type & SMSCSIO_TYPE_FLAT)
2153                                 if (!smsc_superio_flat(lpc_chips_flat, cfg_base, type))
2154                                         found++;
2155
2156                         if (address->type & SMSCSIO_TYPE_PAGED)
2157                                 if (!smsc_superio_paged(lpc_chips_paged, cfg_base, type))
2158                                         found++;
2159                 }
2160                 address++;
2161         }
2162         return found;
2163 }
2164
2165 /*
2166  * Function smsc_superio_flat (chip, base, type)
2167  *
2168  *    Try to get configuration of a smc SuperIO chip with flat register model
2169  *
2170  */
2171 static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfgbase, char *type)
2172 {
2173         unsigned short firbase, sirbase;
2174         u8 mode, dma, irq;
2175         int ret = -ENODEV;
2176
2177         IRDA_DEBUG(1, "%s\n", __func__);
2178
2179         if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type) == NULL)
2180                 return ret;
2181
2182         outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase);
2183         mode = inb(cfgbase + 1);
2184
2185         /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __func__, mode);*/
2186
2187         if (!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA))
2188                 IRDA_WARNING("%s(): IrDA not enabled\n", __func__);
2189
2190         outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase);
2191         sirbase = inb(cfgbase + 1) << 2;
2192
2193         /* FIR iobase */
2194         outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase);
2195         firbase = inb(cfgbase + 1) << 3;
2196
2197         /* DMA */
2198         outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase);
2199         dma = inb(cfgbase + 1) & SMSCSIOFLAT_FIRDMASELECT_MASK;
2200
2201         /* IRQ */
2202         outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase);
2203         irq = inb(cfgbase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK;
2204
2205         IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __func__, firbase, sirbase, dma, irq, mode);
2206
2207         if (firbase && smsc_ircc_open(firbase, sirbase, dma, irq) == 0)
2208                 ret = 0;
2209
2210         /* Exit configuration */
2211         outb(SMSCSIO_CFGEXITKEY, cfgbase);
2212
2213         return ret;
2214 }
2215
2216 /*
2217  * Function smsc_superio_paged (chip, base, type)
2218  *
2219  *    Try  to get configuration of a smc SuperIO chip with paged register model
2220  *
2221  */
2222 static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type)
2223 {
2224         unsigned short fir_io, sir_io;
2225         int ret = -ENODEV;
2226
2227         IRDA_DEBUG(1, "%s\n", __func__);
2228
2229         if (smsc_ircc_probe(cfg_base, 0x20, chips, type) == NULL)
2230                 return ret;
2231
2232         /* Select logical device (UART2) */
2233         outb(0x07, cfg_base);
2234         outb(0x05, cfg_base + 1);
2235
2236         /* SIR iobase */
2237         outb(0x60, cfg_base);
2238         sir_io = inb(cfg_base + 1) << 8;
2239         outb(0x61, cfg_base);
2240         sir_io |= inb(cfg_base + 1);
2241
2242         /* Read FIR base */
2243         outb(0x62, cfg_base);
2244         fir_io = inb(cfg_base + 1) << 8;
2245         outb(0x63, cfg_base);
2246         fir_io |= inb(cfg_base + 1);
2247         outb(0x2b, cfg_base); /* ??? */
2248
2249         if (fir_io && smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0)
2250                 ret = 0;
2251
2252         /* Exit configuration */
2253         outb(SMSCSIO_CFGEXITKEY, cfg_base);
2254
2255         return ret;
2256 }
2257
2258
2259 static int __init smsc_access(unsigned short cfg_base, unsigned char reg)
2260 {
2261         IRDA_DEBUG(1, "%s\n", __func__);
2262
2263         outb(reg, cfg_base);
2264         return inb(cfg_base) != reg ? -1 : 0;
2265 }
2266
2267 static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type)
2268 {
2269         u8 devid, xdevid, rev;
2270
2271         IRDA_DEBUG(1, "%s\n", __func__);
2272
2273         /* Leave configuration */
2274
2275         outb(SMSCSIO_CFGEXITKEY, cfg_base);
2276
2277         if (inb(cfg_base) == SMSCSIO_CFGEXITKEY)        /* not a smc superio chip */
2278                 return NULL;
2279
2280         outb(reg, cfg_base);
2281
2282         xdevid = inb(cfg_base + 1);
2283
2284         /* Enter configuration */
2285
2286         outb(SMSCSIO_CFGACCESSKEY, cfg_base);
2287
2288         #if 0
2289         if (smsc_access(cfg_base,0x55)) /* send second key and check */
2290                 return NULL;
2291         #endif
2292
2293         /* probe device ID */
2294
2295         if (smsc_access(cfg_base, reg))
2296                 return NULL;
2297
2298         devid = inb(cfg_base + 1);
2299
2300         if (devid == 0 || devid == 0xff)        /* typical values for unused port */
2301                 return NULL;
2302
2303         /* probe revision ID */
2304
2305         if (smsc_access(cfg_base, reg + 1))
2306                 return NULL;
2307
2308         rev = inb(cfg_base + 1);
2309
2310         if (rev >= 128)                 /* i think this will make no sense */
2311                 return NULL;
2312
2313         if (devid == xdevid)            /* protection against false positives */
2314                 return NULL;
2315
2316         /* Check for expected device ID; are there others? */
2317
2318         while (chip->devid != devid) {
2319
2320                 chip++;
2321
2322                 if (chip->name == NULL)
2323                         return NULL;
2324         }
2325
2326         IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n",
2327                      devid, rev, cfg_base, type, chip->name);
2328
2329         if (chip->rev > rev) {
2330                 IRDA_MESSAGE("Revision higher than expected\n");
2331                 return NULL;
2332         }
2333
2334         if (chip->flags & NoIRDA)
2335                 IRDA_MESSAGE("chipset does not support IRDA\n");
2336
2337         return chip;
2338 }
2339
2340 static int __init smsc_superio_fdc(unsigned short cfg_base)
2341 {
2342         int ret = -1;
2343
2344         if (!request_region(cfg_base, 2, driver_name)) {
2345                 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
2346                              __func__, cfg_base);
2347         } else {
2348                 if (!smsc_superio_flat(fdc_chips_flat, cfg_base, "FDC") ||
2349                     !smsc_superio_paged(fdc_chips_paged, cfg_base, "FDC"))
2350                         ret =  0;
2351
2352                 release_region(cfg_base, 2);
2353         }
2354
2355         return ret;
2356 }
2357
2358 static int __init smsc_superio_lpc(unsigned short cfg_base)
2359 {
2360         int ret = -1;
2361
2362         if (!request_region(cfg_base, 2, driver_name)) {
2363                 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
2364                              __func__, cfg_base);
2365         } else {
2366                 if (!smsc_superio_flat(lpc_chips_flat, cfg_base, "LPC") ||
2367                     !smsc_superio_paged(lpc_chips_paged, cfg_base, "LPC"))
2368                         ret = 0;
2369
2370                 release_region(cfg_base, 2);
2371         }
2372         return ret;
2373 }
2374
2375 /*
2376  * Look for some specific subsystem setups that need
2377  * pre-configuration not properly done by the BIOS (especially laptops)
2378  * This code is based in part on smcinit.c, tosh1800-smcinit.c
2379  * and tosh2450-smcinit.c. The table lists the device entries
2380  * for ISA bridges with an LPC (Low Pin Count) controller which
2381  * handles the communication with the SMSC device. After the LPC
2382  * controller is initialized through PCI, the SMSC device is initialized
2383  * through a dedicated port in the ISA port-mapped I/O area, this latter
2384  * area is used to configure the SMSC device with default
2385  * SIR and FIR I/O ports, DMA and IRQ. Different vendors have
2386  * used different sets of parameters and different control port
2387  * addresses making a subsystem device table necessary.
2388  */
2389 #ifdef CONFIG_PCI
2390 #define PCIID_VENDOR_INTEL 0x8086
2391 #define PCIID_VENDOR_ALI 0x10b9
2392 static struct smsc_ircc_subsystem_configuration subsystem_configurations[] __initdata = {
2393         /*
2394          * Subsystems needing entries:
2395          * 0x10b9:0x1533 0x103c:0x0850 HP nx9010 family
2396          * 0x10b9:0x1533 0x0e11:0x005a Compaq nc4000 family
2397          * 0x8086:0x24cc 0x0e11:0x002a HP nx9000 family
2398          */
2399         {
2400                 /* Guessed entry */
2401                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2402                 .device = 0x24cc,
2403                 .subvendor = 0x103c,
2404                 .subdevice = 0x08bc,
2405                 .sir_io = 0x02f8,
2406                 .fir_io = 0x0130,
2407                 .fir_irq = 0x05,
2408                 .fir_dma = 0x03,
2409                 .cfg_base = 0x004e,
2410                 .preconfigure = preconfigure_through_82801,
2411                 .name = "HP nx5000 family",
2412         },
2413         {
2414                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2415                 .device = 0x24cc,
2416                 .subvendor = 0x103c,
2417                 .subdevice = 0x088c,
2418                 /* Quite certain these are the same for nc8000 as for nc6000 */
2419                 .sir_io = 0x02f8,
2420                 .fir_io = 0x0130,
2421                 .fir_irq = 0x05,
2422                 .fir_dma = 0x03,
2423                 .cfg_base = 0x004e,
2424                 .preconfigure = preconfigure_through_82801,
2425                 .name = "HP nc8000 family",
2426         },
2427         {
2428                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2429                 .device = 0x24cc,
2430                 .subvendor = 0x103c,
2431                 .subdevice = 0x0890,
2432                 .sir_io = 0x02f8,
2433                 .fir_io = 0x0130,
2434                 .fir_irq = 0x05,
2435                 .fir_dma = 0x03,
2436                 .cfg_base = 0x004e,
2437                 .preconfigure = preconfigure_through_82801,
2438                 .name = "HP nc6000 family",
2439         },
2440         {
2441                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2442                 .device = 0x24cc,
2443                 .subvendor = 0x0e11,
2444                 .subdevice = 0x0860,
2445                 /* I assume these are the same for x1000 as for the others */
2446                 .sir_io = 0x02e8,
2447                 .fir_io = 0x02f8,
2448                 .fir_irq = 0x07,
2449                 .fir_dma = 0x03,
2450                 .cfg_base = 0x002e,
2451                 .preconfigure = preconfigure_through_82801,
2452                 .name = "Compaq x1000 family",
2453         },
2454         {
2455                 /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */
2456                 .vendor = PCIID_VENDOR_INTEL,
2457                 .device = 0x24c0,
2458                 .subvendor = 0x1179,
2459                 .subdevice = 0xffff, /* 0xffff is "any" */
2460                 .sir_io = 0x03f8,
2461                 .fir_io = 0x0130,
2462                 .fir_irq = 0x07,
2463                 .fir_dma = 0x01,
2464                 .cfg_base = 0x002e,
2465                 .preconfigure = preconfigure_through_82801,
2466                 .name = "Toshiba laptop with Intel 82801DB/DBL LPC bridge",
2467         },
2468         {
2469                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */
2470                 .device = 0x248c,
2471                 .subvendor = 0x1179,
2472                 .subdevice = 0xffff, /* 0xffff is "any" */
2473                 .sir_io = 0x03f8,
2474                 .fir_io = 0x0130,
2475                 .fir_irq = 0x03,
2476                 .fir_dma = 0x03,
2477                 .cfg_base = 0x002e,
2478                 .preconfigure = preconfigure_through_82801,
2479                 .name = "Toshiba laptop with Intel 82801CAM ISA bridge",
2480         },
2481         {
2482                 /* 82801DBM (ICH4-M) LPC Interface Bridge */
2483                 .vendor = PCIID_VENDOR_INTEL,
2484                 .device = 0x24cc,
2485                 .subvendor = 0x1179,
2486                 .subdevice = 0xffff, /* 0xffff is "any" */
2487                 .sir_io = 0x03f8,
2488                 .fir_io = 0x0130,
2489                 .fir_irq = 0x03,
2490                 .fir_dma = 0x03,
2491                 .cfg_base = 0x002e,
2492                 .preconfigure = preconfigure_through_82801,
2493                 .name = "Toshiba laptop with Intel 8281DBM LPC bridge",
2494         },
2495         {
2496                 /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */
2497                 .vendor = PCIID_VENDOR_ALI,
2498                 .device = 0x1533,
2499                 .subvendor = 0x1179,
2500                 .subdevice = 0xffff, /* 0xffff is "any" */
2501                 .sir_io = 0x02e8,
2502                 .fir_io = 0x02f8,
2503                 .fir_irq = 0x07,
2504                 .fir_dma = 0x03,
2505                 .cfg_base = 0x002e,
2506                 .preconfigure = preconfigure_through_ali,
2507                 .name = "Toshiba laptop with ALi ISA bridge",
2508         },
2509         { } // Terminator
2510 };
2511
2512
2513 /*
2514  * This sets up the basic SMSC parameters
2515  * (FIR port, SIR port, FIR DMA, FIR IRQ)
2516  * through the chip configuration port.
2517  */
2518 static int __init preconfigure_smsc_chip(struct
2519                                          smsc_ircc_subsystem_configuration
2520                                          *conf)
2521 {
2522         unsigned short iobase = conf->cfg_base;
2523         unsigned char tmpbyte;
2524
2525         outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state
2526         outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID
2527         tmpbyte = inb(iobase +1); // Read device ID
2528         IRDA_DEBUG(0,
2529                    "Detected Chip id: 0x%02x, setting up registers...\n",
2530                    tmpbyte);
2531
2532         /* Disable UART1 and set up SIR I/O port */
2533         outb(0x24, iobase);  // select CR24 - UART1 base addr
2534         outb(0x00, iobase + 1); // disable UART1
2535         outb(SMSCSIOFLAT_UART2BASEADDR_REG, iobase);  // select CR25 - UART2 base addr
2536         outb( (conf->sir_io >> 2), iobase + 1); // bits 2-9 of 0x3f8
2537         tmpbyte = inb(iobase + 1);
2538         if (tmpbyte != (conf->sir_io >> 2) ) {
2539                 IRDA_WARNING("ERROR: could not configure SIR ioport.\n");
2540                 IRDA_WARNING("Try to supply ircc_cfg argument.\n");
2541                 return -ENXIO;
2542         }
2543
2544         /* Set up FIR IRQ channel for UART2 */
2545         outb(SMSCSIOFLAT_UARTIRQSELECT_REG, iobase); // select CR28 - UART1,2 IRQ select
2546         tmpbyte = inb(iobase + 1);
2547         tmpbyte &= SMSCSIOFLAT_UART1IRQSELECT_MASK; // Do not touch the UART1 portion
2548         tmpbyte |= (conf->fir_irq & SMSCSIOFLAT_UART2IRQSELECT_MASK);
2549         outb(tmpbyte, iobase + 1);
2550         tmpbyte = inb(iobase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK;
2551         if (tmpbyte != conf->fir_irq) {
2552                 IRDA_WARNING("ERROR: could not configure FIR IRQ channel.\n");
2553                 return -ENXIO;
2554         }
2555
2556         /* Set up FIR I/O port */
2557         outb(SMSCSIOFLAT_FIRBASEADDR_REG, iobase);  // CR2B - SCE (FIR) base addr
2558         outb((conf->fir_io >> 3), iobase + 1);
2559         tmpbyte = inb(iobase + 1);
2560         if (tmpbyte != (conf->fir_io >> 3) ) {
2561                 IRDA_WARNING("ERROR: could not configure FIR I/O port.\n");
2562                 return -ENXIO;
2563         }
2564
2565         /* Set up FIR DMA channel */
2566         outb(SMSCSIOFLAT_FIRDMASELECT_REG, iobase);  // CR2C - SCE (FIR) DMA select
2567         outb((conf->fir_dma & LPC47N227_FIRDMASELECT_MASK), iobase + 1); // DMA
2568         tmpbyte = inb(iobase + 1) & LPC47N227_FIRDMASELECT_MASK;
2569         if (tmpbyte != (conf->fir_dma & LPC47N227_FIRDMASELECT_MASK)) {
2570                 IRDA_WARNING("ERROR: could not configure FIR DMA channel.\n");
2571                 return -ENXIO;
2572         }
2573
2574         outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase);  // CR0C - UART mode
2575         tmpbyte = inb(iobase + 1);
2576         tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK |
2577                 SMSCSIOFLAT_UART2MODE_VAL_IRDA;
2578         outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed
2579
2580         outb(LPC47N227_APMBOOTDRIVE_REG, iobase);  // CR07 - Auto Pwr Mgt/boot drive sel
2581         tmpbyte = inb(iobase + 1);
2582         outb(tmpbyte | LPC47N227_UART2AUTOPWRDOWN_MASK, iobase + 1); // enable UART2 autopower down
2583
2584         /* This one was not part of tosh1800 */
2585         outb(0x0a, iobase);  // CR0a - ecp fifo / ir mux
2586         tmpbyte = inb(iobase + 1);
2587         outb(tmpbyte | 0x40, iobase + 1); // send active device to ir port
2588
2589         outb(LPC47N227_UART12POWER_REG, iobase);  // CR02 - UART 1,2 power
2590         tmpbyte = inb(iobase + 1);
2591         outb(tmpbyte | LPC47N227_UART2POWERDOWN_MASK, iobase + 1); // UART2 power up mode, UART1 power down
2592
2593         outb(LPC47N227_FDCPOWERVALIDCONF_REG, iobase);  // CR00 - FDC Power/valid config cycle
2594         tmpbyte = inb(iobase + 1);
2595         outb(tmpbyte | LPC47N227_VALID_MASK, iobase + 1); // valid config cycle done
2596
2597         outb(LPC47N227_CFGEXITKEY, iobase);  // Exit configuration
2598
2599         return 0;
2600 }
2601
2602 /* 82801CAM generic registers */
2603 #define VID 0x00
2604 #define DID 0x02
2605 #define PIRQ_A_D_ROUT 0x60
2606 #define SIRQ_CNTL 0x64
2607 #define PIRQ_E_H_ROUT 0x68
2608 #define PCI_DMA_C 0x90
2609 /* LPC-specific registers */
2610 #define COM_DEC 0xe0
2611 #define GEN1_DEC 0xe4
2612 #define LPC_EN 0xe6
2613 #define GEN2_DEC 0xec
2614 /*
2615  * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge
2616  * or Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge.
2617  * They all work the same way!
2618  */
2619 static int __init preconfigure_through_82801(struct pci_dev *dev,
2620                                              struct
2621                                              smsc_ircc_subsystem_configuration
2622                                              *conf)
2623 {
2624         unsigned short tmpword;
2625         unsigned char tmpbyte;
2626
2627         IRDA_MESSAGE("Setting up Intel 82801 controller and SMSC device\n");
2628         /*
2629          * Select the range for the COMA COM port (SIR)
2630          * Register COM_DEC:
2631          * Bit 7: reserved
2632          * Bit 6-4, COMB decode range
2633          * Bit 3: reserved
2634          * Bit 2-0, COMA decode range
2635          *
2636          * Decode ranges:
2637          *   000 = 0x3f8-0x3ff (COM1)
2638          *   001 = 0x2f8-0x2ff (COM2)
2639          *   010 = 0x220-0x227
2640          *   011 = 0x228-0x22f
2641          *   100 = 0x238-0x23f
2642          *   101 = 0x2e8-0x2ef (COM4)
2643          *   110 = 0x338-0x33f
2644          *   111 = 0x3e8-0x3ef (COM3)
2645          */
2646         pci_read_config_byte(dev, COM_DEC, &tmpbyte);
2647         tmpbyte &= 0xf8; /* mask COMA bits */
2648         switch(conf->sir_io) {
2649         case 0x3f8:
2650                 tmpbyte |= 0x00;
2651                 break;
2652         case 0x2f8:
2653                 tmpbyte |= 0x01;
2654                 break;
2655         case 0x220:
2656                 tmpbyte |= 0x02;
2657                 break;
2658         case 0x228:
2659                 tmpbyte |= 0x03;
2660                 break;
2661         case 0x238:
2662                 tmpbyte |= 0x04;
2663                 break;
2664         case 0x2e8:
2665                 tmpbyte |= 0x05;
2666                 break;
2667         case 0x338:
2668                 tmpbyte |= 0x06;
2669                 break;
2670         case 0x3e8:
2671                 tmpbyte |= 0x07;
2672                 break;
2673         default:
2674                 tmpbyte |= 0x01; /* COM2 default */
2675         }
2676         IRDA_DEBUG(1, "COM_DEC (write): 0x%02x\n", tmpbyte);
2677         pci_write_config_byte(dev, COM_DEC, tmpbyte);
2678
2679         /* Enable Low Pin Count interface */
2680         pci_read_config_word(dev, LPC_EN, &tmpword);
2681         /* These seem to be set up at all times,
2682          * just make sure it is properly set.
2683          */
2684         switch(conf->cfg_base) {
2685         case 0x04e:
2686                 tmpword |= 0x2000;
2687                 break;
2688         case 0x02e:
2689                 tmpword |= 0x1000;
2690                 break;
2691         case 0x062:
2692                 tmpword |= 0x0800;
2693                 break;
2694         case 0x060:
2695                 tmpword |= 0x0400;
2696                 break;
2697         default:
2698                 IRDA_WARNING("Uncommon I/O base address: 0x%04x\n",
2699                              conf->cfg_base);
2700                 break;
2701         }
2702         tmpword &= 0xfffd; /* disable LPC COMB */
2703         tmpword |= 0x0001; /* set bit 0 : enable LPC COMA addr range (GEN2) */
2704         IRDA_DEBUG(1, "LPC_EN (write): 0x%04x\n", tmpword);
2705         pci_write_config_word(dev, LPC_EN, tmpword);
2706
2707         /*
2708          * Configure LPC DMA channel
2709          * PCI_DMA_C bits:
2710          * Bit 15-14: DMA channel 7 select
2711          * Bit 13-12: DMA channel 6 select
2712          * Bit 11-10: DMA channel 5 select
2713          * Bit 9-8:   Reserved
2714          * Bit 7-6:   DMA channel 3 select
2715          * Bit 5-4:   DMA channel 2 select
2716          * Bit 3-2:   DMA channel 1 select
2717          * Bit 1-0:   DMA channel 0 select
2718          *  00 = Reserved value
2719          *  01 = PC/PCI DMA
2720          *  10 = Reserved value
2721          *  11 = LPC I/F DMA
2722          */
2723         pci_read_config_word(dev, PCI_DMA_C, &tmpword);
2724         switch(conf->fir_dma) {
2725         case 0x07:
2726                 tmpword |= 0xc000;
2727                 break;
2728         case 0x06:
2729                 tmpword |= 0x3000;
2730                 break;
2731         case 0x05:
2732                 tmpword |= 0x0c00;
2733                 break;
2734         case 0x03:
2735                 tmpword |= 0x00c0;
2736                 break;
2737         case 0x02:
2738                 tmpword |= 0x0030;
2739                 break;
2740         case 0x01:
2741                 tmpword |= 0x000c;
2742                 break;
2743         case 0x00:
2744                 tmpword |= 0x0003;
2745                 break;
2746         default:
2747                 break; /* do not change settings */
2748         }
2749         IRDA_DEBUG(1, "PCI_DMA_C (write): 0x%04x\n", tmpword);
2750         pci_write_config_word(dev, PCI_DMA_C, tmpword);
2751
2752         /*
2753          * GEN2_DEC bits:
2754          * Bit 15-4: Generic I/O range
2755          * Bit 3-1: reserved (read as 0)
2756          * Bit 0: enable GEN2 range on LPC I/F
2757          */
2758         tmpword = conf->fir_io & 0xfff8;
2759         tmpword |= 0x0001;
2760         IRDA_DEBUG(1, "GEN2_DEC (write): 0x%04x\n", tmpword);
2761         pci_write_config_word(dev, GEN2_DEC, tmpword);
2762
2763         /* Pre-configure chip */
2764         return preconfigure_smsc_chip(conf);
2765 }
2766
2767 /*
2768  * Pre-configure a certain port on the ALi 1533 bridge.
2769  * This is based on reverse-engineering since ALi does not
2770  * provide any data sheet for the 1533 chip.
2771  */
2772 static void __init preconfigure_ali_port(struct pci_dev *dev,
2773                                          unsigned short port)
2774 {
2775         unsigned char reg;
2776         /* These bits obviously control the different ports */
2777         unsigned char mask;
2778         unsigned char tmpbyte;
2779
2780         switch(port) {
2781         case 0x0130:
2782         case 0x0178:
2783                 reg = 0xb0;
2784                 mask = 0x80;
2785                 break;
2786         case 0x03f8:
2787                 reg = 0xb4;
2788                 mask = 0x80;
2789                 break;
2790         case 0x02f8:
2791                 reg = 0xb4;
2792                 mask = 0x30;
2793                 break;
2794         case 0x02e8:
2795                 reg = 0xb4;
2796                 mask = 0x08;
2797                 break;
2798         default:
2799                 IRDA_ERROR("Failed to configure unsupported port on ALi 1533 bridge: 0x%04x\n", port);
2800                 return;
2801         }
2802
2803         pci_read_config_byte(dev, reg, &tmpbyte);
2804         /* Turn on the right bits */
2805         tmpbyte |= mask;
2806         pci_write_config_byte(dev, reg, tmpbyte);
2807         IRDA_MESSAGE("Activated ALi 1533 ISA bridge port 0x%04x.\n", port);
2808         return;
2809 }
2810
2811 static int __init preconfigure_through_ali(struct pci_dev *dev,
2812                                            struct
2813                                            smsc_ircc_subsystem_configuration
2814                                            *conf)
2815 {
2816         /* Configure the two ports on the ALi 1533 */
2817         preconfigure_ali_port(dev, conf->sir_io);
2818         preconfigure_ali_port(dev, conf->fir_io);
2819
2820         /* Pre-configure chip */
2821         return preconfigure_smsc_chip(conf);
2822 }
2823
2824 static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
2825                                                     unsigned short ircc_fir,
2826                                                     unsigned short ircc_sir,
2827                                                     unsigned char ircc_dma,
2828                                                     unsigned char ircc_irq)
2829 {
2830         struct pci_dev *dev = NULL;
2831         unsigned short ss_vendor = 0x0000;
2832         unsigned short ss_device = 0x0000;
2833         int ret = 0;
2834
2835         dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
2836
2837         while (dev != NULL) {
2838                 struct smsc_ircc_subsystem_configuration *conf;
2839
2840                 /*
2841                  * Cache the subsystem vendor/device:
2842                  * some manufacturers fail to set this for all components,
2843                  * so we save it in case there is just 0x0000 0x0000 on the
2844                  * device we want to check.
2845                  */
2846                 if (dev->subsystem_vendor != 0x0000U) {
2847                         ss_vendor = dev->subsystem_vendor;
2848                         ss_device = dev->subsystem_device;
2849                 }
2850                 conf = subsystem_configurations;
2851                 for( ; conf->subvendor; conf++) {
2852                         if(conf->vendor == dev->vendor &&
2853                            conf->device == dev->device &&
2854                            conf->subvendor == ss_vendor &&
2855                            /* Sometimes these are cached values */
2856                            (conf->subdevice == ss_device ||
2857                             conf->subdevice == 0xffff)) {
2858                                 struct smsc_ircc_subsystem_configuration
2859                                         tmpconf;
2860
2861                                 memcpy(&tmpconf, conf,
2862                                        sizeof(struct smsc_ircc_subsystem_configuration));
2863
2864                                 /*
2865                                  * Override the default values with anything
2866                                  * passed in as parameter
2867                                  */
2868                                 if (ircc_cfg != 0)
2869                                         tmpconf.cfg_base = ircc_cfg;
2870                                 if (ircc_fir != 0)
2871                                         tmpconf.fir_io = ircc_fir;
2872                                 if (ircc_sir != 0)
2873                                         tmpconf.sir_io = ircc_sir;
2874                                 if (ircc_dma != DMA_INVAL)
2875                                         tmpconf.fir_dma = ircc_dma;
2876                                 if (ircc_irq != IRQ_INVAL)
2877                                         tmpconf.fir_irq = ircc_irq;
2878
2879                                 IRDA_MESSAGE("Detected unconfigured %s SMSC IrDA chip, pre-configuring device.\n", conf->name);
2880                                 if (conf->preconfigure)
2881                                         ret = conf->preconfigure(dev, &tmpconf);
2882                                 else
2883                                         ret = -ENODEV;
2884                         }
2885                 }
2886                 dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
2887         }
2888
2889         return ret;
2890 }
2891 #endif // CONFIG_PCI
2892
2893 /************************************************
2894  *
2895  * Transceivers specific functions
2896  *
2897  ************************************************/
2898
2899
2900 /*
2901  * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed)
2902  *
2903  *    Program transceiver through smsc-ircc ATC circuitry
2904  *
2905  */
2906
2907 static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed)
2908 {
2909         unsigned long jiffies_now, jiffies_timeout;
2910         u8 val;
2911
2912         jiffies_now = jiffies;
2913         jiffies_timeout = jiffies + SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES;
2914
2915         /* ATC */
2916         register_bank(fir_base, 4);
2917         outb((inb(fir_base + IRCC_ATC) & IRCC_ATC_MASK) | IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE,
2918              fir_base + IRCC_ATC);
2919
2920         while ((val = (inb(fir_base + IRCC_ATC) & IRCC_ATC_nPROGREADY)) &&
2921                 !time_after(jiffies, jiffies_timeout))
2922                 /* empty */;
2923
2924         if (val)
2925                 IRDA_WARNING("%s(): ATC: 0x%02x\n", __func__,
2926                              inb(fir_base + IRCC_ATC));
2927 }
2928
2929 /*
2930  * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base)
2931  *
2932  *    Probe transceiver smsc-ircc ATC circuitry
2933  *
2934  */
2935
2936 static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base)
2937 {
2938         return 0;
2939 }
2940
2941 /*
2942  * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed)
2943  *
2944  *    Set transceiver
2945  *
2946  */
2947
2948 static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed)
2949 {
2950         u8 fast_mode;
2951
2952         switch (speed) {
2953         default:
2954         case 576000 :
2955                 fast_mode = 0;
2956                 break;
2957         case 1152000 :
2958         case 4000000 :
2959                 fast_mode = IRCC_LCR_A_FAST;
2960                 break;
2961         }
2962         register_bank(fir_base, 0);
2963         outb((inb(fir_base + IRCC_LCR_A) & 0xbf) | fast_mode, fir_base + IRCC_LCR_A);
2964 }
2965
2966 /*
2967  * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base)
2968  *
2969  *    Probe transceiver
2970  *
2971  */
2972
2973 static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base)
2974 {
2975         return 0;
2976 }
2977
2978 /*
2979  * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed)
2980  *
2981  *    Set transceiver
2982  *
2983  */
2984
2985 static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed)
2986 {
2987         u8 fast_mode;
2988
2989         switch (speed) {
2990         default:
2991         case 576000 :
2992                 fast_mode = 0;
2993                 break;
2994         case 1152000 :
2995         case 4000000 :
2996                 fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA;
2997                 break;
2998
2999         }
3000         /* This causes an interrupt */
3001         register_bank(fir_base, 0);
3002         outb((inb(fir_base + IRCC_LCR_A) &  0xbf) | fast_mode, fir_base + IRCC_LCR_A);
3003 }
3004
3005 /*
3006  * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base)
3007  *
3008  *    Probe transceiver
3009  *
3010  */
3011
3012 static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base)
3013 {
3014         return 0;
3015 }
3016
3017
3018 module_init(smsc_ircc_init);
3019 module_exit(smsc_ircc_cleanup);