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

   1 /*********************************************************************
   2  * $Id: smsc-ircc2.c,v 1.19.2.5 2002/10/27 11:34:26 dip Exp $
   3  *
   4  * Description:   Driver for the SMC Infrared Communications Controller
   5  * Status:        Experimental.
   6  * Author:        Daniele Peri (peri@csai.unipa.it)
   7  * Created at:
   8  * Modified at:
   9  * Modified by:
  10  *
  11  *     Copyright (c) 2002      Daniele Peri
  12  *     All Rights Reserved.
  13  *     Copyright (c) 2002      Jean Tourrilhes
  14  *     Copyright (c) 2006      Linus Walleij
  15  *
  16  *
  17  * Based on smc-ircc.c:
  18  *
  19  *     Copyright (c) 2001      Stefani Seibold
  20  *     Copyright (c) 1999-2001 Dag Brattli
  21  *     Copyright (c) 1998-1999 Thomas Davis,
  22  *
  23  *      and irport.c:
  24  *
  25  *     Copyright (c) 1997, 1998, 1999-2000 Dag Brattli, All Rights Reserved.
  26  *
  27  *
  28  *     This program is free software; you can redistribute it and/or
  29  *     modify it under the terms of the GNU General Public License as
  30  *     published by the Free Software Foundation; either version 2 of
  31  *     the License, or (at your option) any later version.
  32  *
  33  *     This program is distributed in the hope that it will be useful,
  34  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  35  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  36  *     GNU General Public License for more details.
  37  *
  38  *     You should have received a copy of the GNU General Public License
  39  *     along with this program; if not, write to the Free Software
  40  *     Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  41  *     MA 02111-1307 USA
  42  *
  43  ********************************************************************/
  44
  45 #include <linux/module.h>
  46 #include <linux/kernel.h>
  47 #include <linux/types.h>
  48 #include <linux/skbuff.h>
  49 #include <linux/netdevice.h>
  50 #include <linux/ioport.h>
  51 #include <linux/delay.h>
  52 #include <linux/slab.h>
  53 #include <linux/init.h>
  54 #include <linux/rtnetlink.h>
  55 #include <linux/serial_reg.h>
  56 #include <linux/dma-mapping.h>
  57 #include <linux/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 ircc_dma = 255;
  82 module_param(ircc_dma, int, 0);
  83 MODULE_PARM_DESC(ircc_dma, "DMA channel");
  84
  85 static int ircc_irq = 255;
  86 module_param(ircc_irq, int, 0);
  87 MODULE_PARM_DESC(ircc_irq, "IRQ line");
  88
  89 static int ircc_fir;
  90 module_param(ircc_fir, int, 0);
  91 MODULE_PARM_DESC(ircc_fir, "FIR Base Address");
  92
  93 static int ircc_sir;
  94 module_param(ircc_sir, int, 0);
  95 MODULE_PARM_DESC(ircc_sir, "SIR Base Address");
  96
  97 static int ircc_cfg;
  98 module_param(ircc_cfg, int, 0);
  99 MODULE_PARM_DESC(ircc_cfg, "Configuration register base address");
 100
 101 static int ircc_transceiver;
 102 module_param(ircc_transceiver, int, 0);
 103 MODULE_PARM_DESC(ircc_transceiver, "Transceiver type");
 104
 105 /* Types */
 106
 107 #ifdef CONFIG_PCI
 108 struct smsc_ircc_subsystem_configuration {
 109         unsigned short vendor; /* PCI vendor ID */
 110         unsigned short device; /* PCI vendor ID */
 111         unsigned short subvendor; /* PCI subsystem vendor ID */
 112         unsigned short subdevice; /* PCI sybsystem device ID */
 113         unsigned short sir_io; /* I/O port for SIR */
 114         unsigned short fir_io; /* I/O port for FIR */
 115         unsigned char  fir_irq; /* FIR IRQ */
 116         unsigned char  fir_dma; /* FIR DMA */
 117         unsigned short cfg_base; /* I/O port for chip configuration */
 118         int (*preconfigure)(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); /* Preconfig function */
 119         const char *name;       /* name shown as info */
 120 };
 121 #endif
 122
 123 struct smsc_transceiver {
 124         char *name;
 125         void (*set_for_speed)(int fir_base, u32 speed);
 126         int  (*probe)(int fir_base);
 127 };
 128
 129 struct smsc_chip {
 130         char *name;
 131         #if 0
 132         u8      type;
 133         #endif
 134         u16 flags;
 135         u8 devid;
 136         u8 rev;
 137 };
 138
 139 struct smsc_chip_address {
 140         unsigned int cfg_base;
 141         unsigned int type;
 142 };
 143
 144 /* Private data for each instance */
 145 struct smsc_ircc_cb {
 146         struct net_device *netdev;     /* Yes! we are some kind of netdevice */
 147         struct net_device_stats stats;
 148         struct irlap_cb    *irlap; /* The link layer we are binded to */
 149
 150         chipio_t io;               /* IrDA controller information */
 151         iobuff_t tx_buff;          /* Transmit buffer */
 152         iobuff_t rx_buff;          /* Receive buffer */
 153         dma_addr_t tx_buff_dma;
 154         dma_addr_t rx_buff_dma;
 155
 156         struct qos_info qos;       /* QoS capabilities for this device */
 157
 158         spinlock_t lock;           /* For serializing operations */
 159
 160         __u32 new_speed;
 161         __u32 flags;               /* Interface flags */
 162
 163         int tx_buff_offsets[10];   /* Offsets between frames in tx_buff */
 164         int tx_len;                /* Number of frames in tx_buff */
 165
 166         int transceiver;
 167         struct platform_device *pldev;
 168 };
 169
 170 /* Constants */
 171
 172 #define SMSC_IRCC2_DRIVER_NAME                  "smsc-ircc2"
 173
 174 #define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED        9600
 175 #define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER        1
 176 #define SMSC_IRCC2_C_NET_TIMEOUT                0
 177 #define SMSC_IRCC2_C_SIR_STOP                   0
 178
 179 static const char *driver_name = SMSC_IRCC2_DRIVER_NAME;
 180
 181 /* Prototypes */
 182
 183 static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq);
 184 static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base);
 185 static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq);
 186 static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self);
 187 static void smsc_ircc_init_chip(struct smsc_ircc_cb *self);
 188 static int __exit smsc_ircc_close(struct smsc_ircc_cb *self);
 189 static int  smsc_ircc_dma_receive(struct smsc_ircc_cb *self);
 190 static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self);
 191 static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self);
 192 static int  smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev);
 193 static int  smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev);
 194 static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs);
 195 static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self);
 196 static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed);
 197 static void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, u32 speed);
 198 static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id, struct pt_regs *regs);
 199 static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev);
 200 static void smsc_ircc_sir_start(struct smsc_ircc_cb *self);
 201 #if SMSC_IRCC2_C_SIR_STOP
 202 static void smsc_ircc_sir_stop(struct smsc_ircc_cb *self);
 203 #endif
 204 static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self);
 205 static int  smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
 206 static int  smsc_ircc_net_open(struct net_device *dev);
 207 static int  smsc_ircc_net_close(struct net_device *dev);
 208 static int  smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 209 #if SMSC_IRCC2_C_NET_TIMEOUT
 210 static void smsc_ircc_timeout(struct net_device *dev);
 211 #endif
 212 static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev);
 213 static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self);
 214 static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self);
 215 static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed);
 216 static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self);
 217
 218 /* Probing */
 219 static int __init smsc_ircc_look_for_chips(void);
 220 static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type);
 221 static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfg_base, char *type);
 222 static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type);
 223 static int __init smsc_superio_fdc(unsigned short cfg_base);
 224 static int __init smsc_superio_lpc(unsigned short cfg_base);
 225 #ifdef CONFIG_PCI
 226 static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf);
 227 static int __init preconfigure_through_82801(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
 228 static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
 229 static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
 230                                                     unsigned short ircc_fir,
 231                                                     unsigned short ircc_sir,
 232                                                     unsigned char ircc_dma,
 233                                                     unsigned char ircc_irq);
 234 #endif
 235
 236 /* Transceivers specific functions */
 237
 238 static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed);
 239 static int  smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base);
 240 static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed);
 241 static int  smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base);
 242 static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed);
 243 static int  smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base);
 244
 245 /* Power Management */
 246
 247 static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state);
 248 static int smsc_ircc_resume(struct platform_device *dev);
 249
 250 static struct platform_driver smsc_ircc_driver = {
 251         .suspend        = smsc_ircc_suspend,
 252         .resume         = smsc_ircc_resume,
 253         .driver         = {
 254                 .name   = SMSC_IRCC2_DRIVER_NAME,
 255         },
 256 };
 257
 258 /* Transceivers for SMSC-ircc */
 259
 260 static struct smsc_transceiver smsc_transceivers[] =
 261 {
 262         { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800 },
 263         { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select },
 264         { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc },
 265         { NULL, NULL }
 266 };
 267 #define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1)
 268
 269 /*  SMC SuperIO chipsets definitions */
 270
 271 #define KEY55_1 0       /* SuperIO Configuration mode with Key <0x55> */
 272 #define KEY55_2 1       /* SuperIO Configuration mode with Key <0x55,0x55> */
 273 #define NoIRDA  2       /* SuperIO Chip has no IRDA Port */
 274 #define SIR     0       /* SuperIO Chip has only slow IRDA */
 275 #define FIR     4       /* SuperIO Chip has fast IRDA */
 276 #define SERx4   8       /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */
 277
 278 static struct smsc_chip __initdata fdc_chips_flat[] =
 279 {
 280         /* Base address 0x3f0 or 0x370 */
 281         { "37C44",      KEY55_1|NoIRDA,         0x00, 0x00 }, /* This chip cannot be detected */
 282         { "37C665GT",   KEY55_2|NoIRDA,         0x65, 0x01 },
 283         { "37C665GT",   KEY55_2|NoIRDA,         0x66, 0x01 },
 284         { "37C669",     KEY55_2|SIR|SERx4,      0x03, 0x02 },
 285         { "37C669",     KEY55_2|SIR|SERx4,      0x04, 0x02 }, /* ID? */
 286         { "37C78",      KEY55_2|NoIRDA,         0x78, 0x00 },
 287         { "37N769",     KEY55_1|FIR|SERx4,      0x28, 0x00 },
 288         { "37N869",     KEY55_1|FIR|SERx4,      0x29, 0x00 },
 289         { NULL }
 290 };
 291
 292 static struct smsc_chip __initdata fdc_chips_paged[] =
 293 {
 294         /* Base address 0x3f0 or 0x370 */
 295         { "37B72X",     KEY55_1|SIR|SERx4,      0x4c, 0x00 },
 296         { "37B77X",     KEY55_1|SIR|SERx4,      0x43, 0x00 },
 297         { "37B78X",     KEY55_1|SIR|SERx4,      0x44, 0x00 },
 298         { "37B80X",     KEY55_1|SIR|SERx4,      0x42, 0x00 },
 299         { "37C67X",     KEY55_1|FIR|SERx4,      0x40, 0x00 },
 300         { "37C93X",     KEY55_2|SIR|SERx4,      0x02, 0x01 },
 301         { "37C93XAPM",  KEY55_1|SIR|SERx4,      0x30, 0x01 },
 302         { "37C93XFR",   KEY55_2|FIR|SERx4,      0x03, 0x01 },
 303         { "37M707",     KEY55_1|SIR|SERx4,      0x42, 0x00 },
 304         { "37M81X",     KEY55_1|SIR|SERx4,      0x4d, 0x00 },
 305         { "37N958FR",   KEY55_1|FIR|SERx4,      0x09, 0x04 },
 306         { "37N971",     KEY55_1|FIR|SERx4,      0x0a, 0x00 },
 307         { "37N972",     KEY55_1|FIR|SERx4,      0x0b, 0x00 },
 308         { NULL }
 309 };
 310
 311 static struct smsc_chip __initdata lpc_chips_flat[] =
 312 {
 313         /* Base address 0x2E or 0x4E */
 314         { "47N227",     KEY55_1|FIR|SERx4,      0x5a, 0x00 },
 315         { "47N267",     KEY55_1|FIR|SERx4,      0x5e, 0x00 },
 316         { NULL }
 317 };
 318
 319 static struct smsc_chip __initdata lpc_chips_paged[] =
 320 {
 321         /* Base address 0x2E or 0x4E */
 322         { "47B27X",     KEY55_1|SIR|SERx4,      0x51, 0x00 },
 323         { "47B37X",     KEY55_1|SIR|SERx4,      0x52, 0x00 },
 324         { "47M10X",     KEY55_1|SIR|SERx4,      0x59, 0x00 },
 325         { "47M120",     KEY55_1|NoIRDA|SERx4,   0x5c, 0x00 },
 326         { "47M13X",     KEY55_1|SIR|SERx4,      0x59, 0x00 },
 327         { "47M14X",     KEY55_1|SIR|SERx4,      0x5f, 0x00 },
 328         { "47N252",     KEY55_1|FIR|SERx4,      0x0e, 0x00 },
 329         { "47S42X",     KEY55_1|SIR|SERx4,      0x57, 0x00 },
 330         { NULL }
 331 };
 332
 333 #define SMSCSIO_TYPE_FDC        1
 334 #define SMSCSIO_TYPE_LPC        2
 335 #define SMSCSIO_TYPE_FLAT       4
 336 #define SMSCSIO_TYPE_PAGED      8
 337
 338 static struct smsc_chip_address __initdata possible_addresses[] =
 339 {
 340         { 0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 341         { 0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 342         { 0xe0,  SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 343         { 0x2e,  SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 344         { 0x4e,  SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
 345         { 0, 0 }
 346 };
 347
 348 /* Globals */
 349
 350 static struct smsc_ircc_cb *dev_self[] = { NULL, NULL };
 351 static unsigned short dev_count;
 352
 353 static inline void register_bank(int iobase, int bank)
 354 {
 355         outb(((inb(iobase + IRCC_MASTER) & 0xf0) | (bank & 0x07)),
 356                iobase + IRCC_MASTER);
 357 }
 358
 359
 360 /*******************************************************************************
 361  *
 362  *
 363  * SMSC-ircc stuff
 364  *
 365  *
 366  *******************************************************************************/
 367
 368 /*
 369  * Function smsc_ircc_init ()
 370  *
 371  *    Initialize chip. Just try to find out how many chips we are dealing with
 372  *    and where they are
 373  */
 374 static int __init smsc_ircc_init(void)
 375 {
 376         int ret;
 377
 378         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 379
 380         ret = platform_driver_register(&smsc_ircc_driver);
 381         if (ret) {
 382                 IRDA_ERROR("%s, Can't register driver!\n", driver_name);
 383                 return ret;
 384         }
 385
 386 #ifdef CONFIG_PCI
 387         if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) {
 388                 /* Ignore errors from preconfiguration */
 389                 IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name);
 390         }
 391 #endif
 392
 393         dev_count = 0;
 394
 395         if (ircc_fir > 0 && ircc_sir > 0) {
 396                 IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir);
 397                 IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir);
 398
 399                 if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq))
 400                         ret = -ENODEV;
 401         } else {
 402                 ret = -ENODEV;
 403
 404                 /* try user provided configuration register base address */
 405                 if (ircc_cfg > 0) {
 406                         IRDA_MESSAGE(" Overriding configuration address "
 407                                      "0x%04x\n", ircc_cfg);
 408                         if (!smsc_superio_fdc(ircc_cfg))
 409                                 ret = 0;
 410                         if (!smsc_superio_lpc(ircc_cfg))
 411                                 ret = 0;
 412                 }
 413
 414                 if (smsc_ircc_look_for_chips() > 0)
 415                         ret = 0;
 416         }
 417
 418         if (ret)
 419                 platform_driver_unregister(&smsc_ircc_driver);
 420
 421         return ret;
 422 }
 423
 424 /*
 425  * Function smsc_ircc_open (firbase, sirbase, dma, irq)
 426  *
 427  *    Try to open driver instance
 428  *
 429  */
 430 static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq)
 431 {
 432         struct smsc_ircc_cb *self;
 433         struct net_device *dev;
 434         int err;
 435
 436         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 437
 438         err = smsc_ircc_present(fir_base, sir_base);
 439         if (err)
 440                 goto err_out;
 441
 442         err = -ENOMEM;
 443         if (dev_count >= ARRAY_SIZE(dev_self)) {
 444                 IRDA_WARNING("%s(), too many devices!\n", __FUNCTION__);
 445                 goto err_out1;
 446         }
 447
 448         /*
 449          *  Allocate new instance of the driver
 450          */
 451         dev = alloc_irdadev(sizeof(struct smsc_ircc_cb));
 452         if (!dev) {
 453                 IRDA_WARNING("%s() can't allocate net device\n", __FUNCTION__);
 454                 goto err_out1;
 455         }
 456
 457         SET_MODULE_OWNER(dev);
 458
 459         dev->hard_start_xmit = smsc_ircc_hard_xmit_sir;
 460 #if SMSC_IRCC2_C_NET_TIMEOUT
 461         dev->tx_timeout      = smsc_ircc_timeout;
 462         dev->watchdog_timeo  = HZ * 2;  /* Allow enough time for speed change */
 463 #endif
 464         dev->open            = smsc_ircc_net_open;
 465         dev->stop            = smsc_ircc_net_close;
 466         dev->do_ioctl        = smsc_ircc_net_ioctl;
 467         dev->get_stats       = smsc_ircc_net_get_stats;
 468
 469         self = netdev_priv(dev);
 470         self->netdev = dev;
 471
 472         /* Make ifconfig display some details */
 473         dev->base_addr = self->io.fir_base = fir_base;
 474         dev->irq = self->io.irq = irq;
 475
 476         /* Need to store self somewhere */
 477         dev_self[dev_count] = self;
 478         spin_lock_init(&self->lock);
 479
 480         self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE;
 481         self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE;
 482
 483         self->rx_buff.head =
 484                 dma_alloc_coherent(NULL, self->rx_buff.truesize,
 485                                    &self->rx_buff_dma, GFP_KERNEL);
 486         if (self->rx_buff.head == NULL) {
 487                 IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n",
 488                            driver_name);
 489                 goto err_out2;
 490         }
 491
 492         self->tx_buff.head =
 493                 dma_alloc_coherent(NULL, self->tx_buff.truesize,
 494                                    &self->tx_buff_dma, GFP_KERNEL);
 495         if (self->tx_buff.head == NULL) {
 496                 IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n",
 497                            driver_name);
 498                 goto err_out3;
 499         }
 500
 501         memset(self->rx_buff.head, 0, self->rx_buff.truesize);
 502         memset(self->tx_buff.head, 0, self->tx_buff.truesize);
 503
 504         self->rx_buff.in_frame = FALSE;
 505         self->rx_buff.state = OUTSIDE_FRAME;
 506         self->tx_buff.data = self->tx_buff.head;
 507         self->rx_buff.data = self->rx_buff.head;
 508
 509         smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq);
 510         smsc_ircc_setup_qos(self);
 511         smsc_ircc_init_chip(self);
 512
 513         if (ircc_transceiver > 0  &&
 514             ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS)
 515                 self->transceiver = ircc_transceiver;
 516         else
 517                 smsc_ircc_probe_transceiver(self);
 518
 519         err = register_netdev(self->netdev);
 520         if (err) {
 521                 IRDA_ERROR("%s, Network device registration failed!\n",
 522                            driver_name);
 523                 goto err_out4;
 524         }
 525
 526         self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME,
 527                                                       dev_count, NULL, 0);
 528         if (IS_ERR(self->pldev)) {
 529                 err = PTR_ERR(self->pldev);
 530                 goto err_out5;
 531         }
 532         platform_set_drvdata(self->pldev, self);
 533
 534         IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
 535         dev_count++;
 536
 537         return 0;
 538
 539  err_out5:
 540         unregister_netdev(self->netdev);
 541
 542  err_out4:
 543         dma_free_coherent(NULL, self->tx_buff.truesize,
 544                           self->tx_buff.head, self->tx_buff_dma);
 545  err_out3:
 546         dma_free_coherent(NULL, self->rx_buff.truesize,
 547                           self->rx_buff.head, self->rx_buff_dma);
 548  err_out2:
 549         free_netdev(self->netdev);
 550         dev_self[dev_count] = NULL;
 551  err_out1:
 552         release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
 553         release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
 554  err_out:
 555         return err;
 556 }
 557
 558 /*
 559  * Function smsc_ircc_present(fir_base, sir_base)
 560  *
 561  *    Check the smsc-ircc chip presence
 562  *
 563  */
 564 static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base)
 565 {
 566         unsigned char low, high, chip, config, dma, irq, version;
 567
 568         if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT,
 569                             driver_name)) {
 570                 IRDA_WARNING("%s: can't get fir_base of 0x%03x\n",
 571                              __FUNCTION__, fir_base);
 572                 goto out1;
 573         }
 574
 575         if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT,
 576                             driver_name)) {
 577                 IRDA_WARNING("%s: can't get sir_base of 0x%03x\n",
 578                              __FUNCTION__, sir_base);
 579                 goto out2;
 580         }
 581
 582         register_bank(fir_base, 3);
 583
 584         high    = inb(fir_base + IRCC_ID_HIGH);
 585         low     = inb(fir_base + IRCC_ID_LOW);
 586         chip    = inb(fir_base + IRCC_CHIP_ID);
 587         version = inb(fir_base + IRCC_VERSION);
 588         config  = inb(fir_base + IRCC_INTERFACE);
 589         dma     = config & IRCC_INTERFACE_DMA_MASK;
 590         irq     = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
 591
 592         if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) {
 593                 IRDA_WARNING("%s(), addr 0x%04x - no device found!\n",
 594                              __FUNCTION__, fir_base);
 595                 goto out3;
 596         }
 597         IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, "
 598                      "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n",
 599                      chip & 0x0f, version, fir_base, sir_base, dma, irq);
 600
 601         return 0;
 602
 603  out3:
 604         release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
 605  out2:
 606         release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
 607  out1:
 608         return -ENODEV;
 609 }
 610
 611 /*
 612  * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq)
 613  *
 614  *    Setup I/O
 615  *
 616  */
 617 static void smsc_ircc_setup_io(struct smsc_ircc_cb *self,
 618                                unsigned int fir_base, unsigned int sir_base,
 619                                u8 dma, u8 irq)
 620 {
 621         unsigned char config, chip_dma, chip_irq;
 622
 623         register_bank(fir_base, 3);
 624         config = inb(fir_base + IRCC_INTERFACE);
 625         chip_dma = config & IRCC_INTERFACE_DMA_MASK;
 626         chip_irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
 627
 628         self->io.fir_base  = fir_base;
 629         self->io.sir_base  = sir_base;
 630         self->io.fir_ext   = SMSC_IRCC2_FIR_CHIP_IO_EXTENT;
 631         self->io.sir_ext   = SMSC_IRCC2_SIR_CHIP_IO_EXTENT;
 632         self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE;
 633         self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED;
 634
 635         if (irq < 255) {
 636                 if (irq != chip_irq)
 637                         IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n",
 638                                      driver_name, chip_irq, irq);
 639                 self->io.irq = irq;
 640         } else
 641                 self->io.irq = chip_irq;
 642
 643         if (dma < 255) {
 644                 if (dma != chip_dma)
 645                         IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n",
 646                                      driver_name, chip_dma, dma);
 647                 self->io.dma = dma;
 648         } else
 649                 self->io.dma = chip_dma;
 650
 651 }
 652
 653 /*
 654  * Function smsc_ircc_setup_qos(self)
 655  *
 656  *    Setup qos
 657  *
 658  */
 659 static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self)
 660 {
 661         /* Initialize QoS for this device */
 662         irda_init_max_qos_capabilies(&self->qos);
 663
 664         self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
 665                 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8);
 666
 667         self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME;
 668         self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE;
 669         irda_qos_bits_to_value(&self->qos);
 670 }
 671
 672 /*
 673  * Function smsc_ircc_init_chip(self)
 674  *
 675  *    Init chip
 676  *
 677  */
 678 static void smsc_ircc_init_chip(struct smsc_ircc_cb *self)
 679 {
 680         int iobase = self->io.fir_base;
 681
 682         register_bank(iobase, 0);
 683         outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
 684         outb(0x00, iobase + IRCC_MASTER);
 685
 686         register_bank(iobase, 1);
 687         outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | IRCC_CFGA_IRDA_SIR_A),
 688              iobase + IRCC_SCE_CFGA);
 689
 690 #ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */
 691         outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM),
 692              iobase + IRCC_SCE_CFGB);
 693 #else
 694         outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
 695              iobase + IRCC_SCE_CFGB);
 696 #endif
 697         (void) inb(iobase + IRCC_FIFO_THRESHOLD);
 698         outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD);
 699
 700         register_bank(iobase, 4);
 701         outb((inb(iobase + IRCC_CONTROL) & 0x30), iobase + IRCC_CONTROL);
 702
 703         register_bank(iobase, 0);
 704         outb(0, iobase + IRCC_LCR_A);
 705
 706         smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
 707
 708         /* Power on device */
 709         outb(0x00, iobase + IRCC_MASTER);
 710 }
 711
 712 /*
 713  * Function smsc_ircc_net_ioctl (dev, rq, cmd)
 714  *
 715  *    Process IOCTL commands for this device
 716  *
 717  */
 718 static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 719 {
 720         struct if_irda_req *irq = (struct if_irda_req *) rq;
 721         struct smsc_ircc_cb *self;
 722         unsigned long flags;
 723         int ret = 0;
 724
 725         IRDA_ASSERT(dev != NULL, return -1;);
 726
 727         self = netdev_priv(dev);
 728
 729         IRDA_ASSERT(self != NULL, return -1;);
 730
 731         IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__, dev->name, cmd);
 732
 733         switch (cmd) {
 734         case SIOCSBANDWIDTH: /* Set bandwidth */
 735                 if (!capable(CAP_NET_ADMIN))
 736                         ret = -EPERM;
 737                 else {
 738                         /* Make sure we are the only one touching
 739                          * self->io.speed and the hardware - Jean II */
 740                         spin_lock_irqsave(&self->lock, flags);
 741                         smsc_ircc_change_speed(self, irq->ifr_baudrate);
 742                         spin_unlock_irqrestore(&self->lock, flags);
 743                 }
 744                 break;
 745         case SIOCSMEDIABUSY: /* Set media busy */
 746                 if (!capable(CAP_NET_ADMIN)) {
 747                         ret = -EPERM;
 748                         break;
 749                 }
 750
 751                 irda_device_set_media_busy(self->netdev, TRUE);
 752                 break;
 753         case SIOCGRECEIVING: /* Check if we are receiving right now */
 754                 irq->ifr_receiving = smsc_ircc_is_receiving(self);
 755                 break;
 756         #if 0
 757         case SIOCSDTRRTS:
 758                 if (!capable(CAP_NET_ADMIN)) {
 759                         ret = -EPERM;
 760                         break;
 761                 }
 762                 smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts);
 763                 break;
 764         #endif
 765         default:
 766                 ret = -EOPNOTSUPP;
 767         }
 768
 769         return ret;
 770 }
 771
 772 static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev)
 773 {
 774         struct smsc_ircc_cb *self = netdev_priv(dev);
 775
 776         return &self->stats;
 777 }
 778
 779 #if SMSC_IRCC2_C_NET_TIMEOUT
 780 /*
 781  * Function smsc_ircc_timeout (struct net_device *dev)
 782  *
 783  *    The networking timeout management.
 784  *
 785  */
 786
 787 static void smsc_ircc_timeout(struct net_device *dev)
 788 {
 789         struct smsc_ircc_cb *self = netdev_priv(dev);
 790         unsigned long flags;
 791
 792         IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n",
 793                      dev->name, self->io.speed);
 794         spin_lock_irqsave(&self->lock, flags);
 795         smsc_ircc_sir_start(self);
 796         smsc_ircc_change_speed(self, self->io.speed);
 797         dev->trans_start = jiffies;
 798         netif_wake_queue(dev);
 799         spin_unlock_irqrestore(&self->lock, flags);
 800 }
 801 #endif
 802
 803 /*
 804  * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev)
 805  *
 806  *    Transmits the current frame until FIFO is full, then
 807  *    waits until the next transmit interrupt, and continues until the
 808  *    frame is transmitted.
 809  */
 810 int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev)
 811 {
 812         struct smsc_ircc_cb *self;
 813         unsigned long flags;
 814         s32 speed;
 815
 816         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 817
 818         IRDA_ASSERT(dev != NULL, return 0;);
 819
 820         self = netdev_priv(dev);
 821         IRDA_ASSERT(self != NULL, return 0;);
 822
 823         netif_stop_queue(dev);
 824
 825         /* Make sure test of self->io.speed & speed change are atomic */
 826         spin_lock_irqsave(&self->lock, flags);
 827
 828         /* Check if we need to change the speed */
 829         speed = irda_get_next_speed(skb);
 830         if (speed != self->io.speed && speed != -1) {
 831                 /* Check for empty frame */
 832                 if (!skb->len) {
 833                         /*
 834                          * We send frames one by one in SIR mode (no
 835                          * pipelining), so at this point, if we were sending
 836                          * a previous frame, we just received the interrupt
 837                          * telling us it is finished (UART_IIR_THRI).
 838                          * Therefore, waiting for the transmitter to really
 839                          * finish draining the fifo won't take too long.
 840                          * And the interrupt handler is not expected to run.
 841                          * - Jean II */
 842                         smsc_ircc_sir_wait_hw_transmitter_finish(self);
 843                         smsc_ircc_change_speed(self, speed);
 844                         spin_unlock_irqrestore(&self->lock, flags);
 845                         dev_kfree_skb(skb);
 846                         return 0;
 847                 }
 848                 self->new_speed = speed;
 849         }
 850
 851         /* Init tx buffer */
 852         self->tx_buff.data = self->tx_buff.head;
 853
 854         /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
 855         self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
 856                                            self->tx_buff.truesize);
 857
 858         self->stats.tx_bytes += self->tx_buff.len;
 859
 860         /* Turn on transmit finished interrupt. Will fire immediately!  */
 861         outb(UART_IER_THRI, self->io.sir_base + UART_IER);
 862
 863         spin_unlock_irqrestore(&self->lock, flags);
 864
 865         dev_kfree_skb(skb);
 866
 867         return 0;
 868 }
 869
 870 /*
 871  * Function smsc_ircc_set_fir_speed (self, baud)
 872  *
 873  *    Change the speed of the device
 874  *
 875  */
 876 static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed)
 877 {
 878         int fir_base, ir_mode, ctrl, fast;
 879
 880         IRDA_ASSERT(self != NULL, return;);
 881         fir_base = self->io.fir_base;
 882
 883         self->io.speed = speed;
 884
 885         switch (speed) {
 886         default:
 887         case 576000:
 888                 ir_mode = IRCC_CFGA_IRDA_HDLC;
 889                 ctrl = IRCC_CRC;
 890                 fast = 0;
 891                 IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __FUNCTION__);
 892                 break;
 893         case 1152000:
 894                 ir_mode = IRCC_CFGA_IRDA_HDLC;
 895                 ctrl = IRCC_1152 | IRCC_CRC;
 896                 fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA;
 897                 IRDA_DEBUG(0, "%s(), handling baud of 1152000\n",
 898                            __FUNCTION__);
 899                 break;
 900         case 4000000:
 901                 ir_mode = IRCC_CFGA_IRDA_4PPM;
 902                 ctrl = IRCC_CRC;
 903                 fast = IRCC_LCR_A_FAST;
 904                 IRDA_DEBUG(0, "%s(), handling baud of 4000000\n",
 905                            __FUNCTION__);
 906                 break;
 907         }
 908         #if 0
 909         Now in tranceiver!
 910         /* This causes an interrupt */
 911         register_bank(fir_base, 0);
 912         outb((inb(fir_base + IRCC_LCR_A) &  0xbf) | fast, fir_base + IRCC_LCR_A);
 913         #endif
 914
 915         register_bank(fir_base, 1);
 916         outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | ir_mode), fir_base + IRCC_SCE_CFGA);
 917
 918         register_bank(fir_base, 4);
 919         outb((inb(fir_base + IRCC_CONTROL) & 0x30) | ctrl, fir_base + IRCC_CONTROL);
 920 }
 921
 922 /*
 923  * Function smsc_ircc_fir_start(self)
 924  *
 925  *    Change the speed of the device
 926  *
 927  */
 928 static void smsc_ircc_fir_start(struct smsc_ircc_cb *self)
 929 {
 930         struct net_device *dev;
 931         int fir_base;
 932
 933         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 934
 935         IRDA_ASSERT(self != NULL, return;);
 936         dev = self->netdev;
 937         IRDA_ASSERT(dev != NULL, return;);
 938
 939         fir_base = self->io.fir_base;
 940
 941         /* Reset everything */
 942
 943         /* Install FIR transmit handler */
 944         dev->hard_start_xmit = smsc_ircc_hard_xmit_fir;
 945
 946         /* Clear FIFO */
 947         outb(inb(fir_base + IRCC_LCR_A) | IRCC_LCR_A_FIFO_RESET, fir_base + IRCC_LCR_A);
 948
 949         /* Enable interrupt */
 950         /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/
 951
 952         register_bank(fir_base, 1);
 953
 954         /* Select the TX/RX interface */
 955 #ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */
 956         outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM),
 957              fir_base + IRCC_SCE_CFGB);
 958 #else
 959         outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
 960              fir_base + IRCC_SCE_CFGB);
 961 #endif
 962         (void) inb(fir_base + IRCC_FIFO_THRESHOLD);
 963
 964         /* Enable SCE interrupts */
 965         outb(0, fir_base + IRCC_MASTER);
 966         register_bank(fir_base, 0);
 967         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, fir_base + IRCC_IER);
 968         outb(IRCC_MASTER_INT_EN, fir_base + IRCC_MASTER);
 969 }
 970
 971 /*
 972  * Function smsc_ircc_fir_stop(self, baud)
 973  *
 974  *    Change the speed of the device
 975  *
 976  */
 977 static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self)
 978 {
 979         int fir_base;
 980
 981         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
 982
 983         IRDA_ASSERT(self != NULL, return;);
 984
 985         fir_base = self->io.fir_base;
 986         register_bank(fir_base, 0);
 987         /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/
 988         outb(inb(fir_base + IRCC_LCR_B) & IRCC_LCR_B_SIP_ENABLE, fir_base + IRCC_LCR_B);
 989 }
 990
 991
 992 /*
 993  * Function smsc_ircc_change_speed(self, baud)
 994  *
 995  *    Change the speed of the device
 996  *
 997  * This function *must* be called with spinlock held, because it may
 998  * be called from the irq handler. - Jean II
 999  */
1000 static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed)
1001 {
1002         struct net_device *dev;
1003         int last_speed_was_sir;
1004
1005         IRDA_DEBUG(0, "%s() changing speed to: %d\n", __FUNCTION__, speed);
1006
1007         IRDA_ASSERT(self != NULL, return;);
1008         dev = self->netdev;
1009
1010         last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED;
1011
1012         #if 0
1013         /* Temp Hack */
1014         speed= 1152000;
1015         self->io.speed = speed;
1016         last_speed_was_sir = 0;
1017         smsc_ircc_fir_start(self);
1018         #endif
1019
1020         if (self->io.speed == 0)
1021                 smsc_ircc_sir_start(self);
1022
1023         #if 0
1024         if (!last_speed_was_sir) speed = self->io.speed;
1025         #endif
1026
1027         if (self->io.speed != speed)
1028                 smsc_ircc_set_transceiver_for_speed(self, speed);
1029
1030         self->io.speed = speed;
1031
1032         if (speed <= SMSC_IRCC2_MAX_SIR_SPEED) {
1033                 if (!last_speed_was_sir) {
1034                         smsc_ircc_fir_stop(self);
1035                         smsc_ircc_sir_start(self);
1036                 }
1037                 smsc_ircc_set_sir_speed(self, speed);
1038         } else {
1039                 if (last_speed_was_sir) {
1040                         #if SMSC_IRCC2_C_SIR_STOP
1041                         smsc_ircc_sir_stop(self);
1042                         #endif
1043                         smsc_ircc_fir_start(self);
1044                 }
1045                 smsc_ircc_set_fir_speed(self, speed);
1046
1047                 #if 0
1048                 self->tx_buff.len = 10;
1049                 self->tx_buff.data = self->tx_buff.head;
1050
1051                 smsc_ircc_dma_xmit(self, 4000);
1052                 #endif
1053                 /* Be ready for incoming frames */
1054                 smsc_ircc_dma_receive(self);
1055         }
1056
1057         netif_wake_queue(dev);
1058 }
1059
1060 /*
1061  * Function smsc_ircc_set_sir_speed (self, speed)
1062  *
1063  *    Set speed of IrDA port to specified baudrate
1064  *
1065  */
1066 void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, __u32 speed)
1067 {
1068         int iobase;
1069         int fcr;    /* FIFO control reg */
1070         int lcr;    /* Line control reg */
1071         int divisor;
1072
1073         IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __FUNCTION__, speed);
1074
1075         IRDA_ASSERT(self != NULL, return;);
1076         iobase = self->io.sir_base;
1077
1078         /* Update accounting for new speed */
1079         self->io.speed = speed;
1080
1081         /* Turn off interrupts */
1082         outb(0, iobase + UART_IER);
1083
1084         divisor = SMSC_IRCC2_MAX_SIR_SPEED / speed;
1085
1086         fcr = UART_FCR_ENABLE_FIFO;
1087
1088         /*
1089          * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1090          * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
1091          * about this timeout since it will always be fast enough.
1092          */
1093         fcr |= self->io.speed < 38400 ?
1094                 UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14;
1095
1096         /* IrDA ports use 8N1 */
1097         lcr = UART_LCR_WLEN8;
1098
1099         outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */
1100         outb(divisor & 0xff,      iobase + UART_DLL); /* Set speed */
1101         outb(divisor >> 8,        iobase + UART_DLM);
1102         outb(lcr,                 iobase + UART_LCR); /* Set 8N1 */
1103         outb(fcr,                 iobase + UART_FCR); /* Enable FIFO's */
1104
1105         /* Turn on interrups */
1106         outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
1107
1108         IRDA_DEBUG(2, "%s() speed changed to: %d\n", __FUNCTION__, speed);
1109 }
1110
1111
1112 /*
1113  * Function smsc_ircc_hard_xmit_fir (skb, dev)
1114  *
1115  *    Transmit the frame!
1116  *
1117  */
1118 static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev)
1119 {
1120         struct smsc_ircc_cb *self;
1121         unsigned long flags;
1122         s32 speed;
1123         int mtt;
1124
1125         IRDA_ASSERT(dev != NULL, return 0;);
1126         self = netdev_priv(dev);
1127         IRDA_ASSERT(self != NULL, return 0;);
1128
1129         netif_stop_queue(dev);
1130
1131         /* Make sure test of self->io.speed & speed change are atomic */
1132         spin_lock_irqsave(&self->lock, flags);
1133
1134         /* Check if we need to change the speed after this frame */
1135         speed = irda_get_next_speed(skb);
1136         if (speed != self->io.speed && speed != -1) {
1137                 /* Check for empty frame */
1138                 if (!skb->len) {
1139                         /* Note : you should make sure that speed changes
1140                          * are not going to corrupt any outgoing frame.
1141                          * Look at nsc-ircc for the gory details - Jean II */
1142                         smsc_ircc_change_speed(self, speed);
1143                         spin_unlock_irqrestore(&self->lock, flags);
1144                         dev_kfree_skb(skb);
1145                         return 0;
1146                 }
1147
1148                 self->new_speed = speed;
1149         }
1150
1151         memcpy(self->tx_buff.head, skb->data, skb->len);
1152
1153         self->tx_buff.len = skb->len;
1154         self->tx_buff.data = self->tx_buff.head;
1155
1156         mtt = irda_get_mtt(skb);
1157         if (mtt) {
1158                 int bofs;
1159
1160                 /*
1161                  * Compute how many BOFs (STA or PA's) we need to waste the
1162                  * min turn time given the speed of the link.
1163                  */
1164                 bofs = mtt * (self->io.speed / 1000) / 8000;
1165                 if (bofs > 4095)
1166                         bofs = 4095;
1167
1168                 smsc_ircc_dma_xmit(self, bofs);
1169         } else {
1170                 /* Transmit frame */
1171                 smsc_ircc_dma_xmit(self, 0);
1172         }
1173
1174         spin_unlock_irqrestore(&self->lock, flags);
1175         dev_kfree_skb(skb);
1176
1177         return 0;
1178 }
1179
1180 /*
1181  * Function smsc_ircc_dma_xmit (self, bofs)
1182  *
1183  *    Transmit data using DMA
1184  *
1185  */
1186 static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs)
1187 {
1188         int iobase = self->io.fir_base;
1189         u8 ctrl;
1190
1191         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1192 #if 1
1193         /* Disable Rx */
1194         register_bank(iobase, 0);
1195         outb(0x00, iobase + IRCC_LCR_B);
1196 #endif
1197         register_bank(iobase, 1);
1198         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1199              iobase + IRCC_SCE_CFGB);
1200
1201         self->io.direction = IO_XMIT;
1202
1203         /* Set BOF additional count for generating the min turn time */
1204         register_bank(iobase, 4);
1205         outb(bofs & 0xff, iobase + IRCC_BOF_COUNT_LO);
1206         ctrl = inb(iobase + IRCC_CONTROL) & 0xf0;
1207         outb(ctrl | ((bofs >> 8) & 0x0f), iobase + IRCC_BOF_COUNT_HI);
1208
1209         /* Set max Tx frame size */
1210         outb(self->tx_buff.len >> 8, iobase + IRCC_TX_SIZE_HI);
1211         outb(self->tx_buff.len & 0xff, iobase + IRCC_TX_SIZE_LO);
1212
1213         /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/
1214
1215         /* Enable burst mode chip Tx DMA */
1216         register_bank(iobase, 1);
1217         outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE |
1218              IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB);
1219
1220         /* Setup DMA controller (must be done after enabling chip DMA) */
1221         irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len,
1222                        DMA_TX_MODE);
1223
1224         /* Enable interrupt */
1225
1226         register_bank(iobase, 0);
1227         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1228         outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER);
1229
1230         /* Enable transmit */
1231         outb(IRCC_LCR_B_SCE_TRANSMIT | IRCC_LCR_B_SIP_ENABLE, iobase + IRCC_LCR_B);
1232 }
1233
1234 /*
1235  * Function smsc_ircc_dma_xmit_complete (self)
1236  *
1237  *    The transfer of a frame in finished. This function will only be called
1238  *    by the interrupt handler
1239  *
1240  */
1241 static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self)
1242 {
1243         int iobase = self->io.fir_base;
1244
1245         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1246 #if 0
1247         /* Disable Tx */
1248         register_bank(iobase, 0);
1249         outb(0x00, iobase + IRCC_LCR_B);
1250 #endif
1251         register_bank(iobase, 1);
1252         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1253              iobase + IRCC_SCE_CFGB);
1254
1255         /* Check for underrun! */
1256         register_bank(iobase, 0);
1257         if (inb(iobase + IRCC_LSR) & IRCC_LSR_UNDERRUN) {
1258                 self->stats.tx_errors++;
1259                 self->stats.tx_fifo_errors++;
1260
1261                 /* Reset error condition */
1262                 register_bank(iobase, 0);
1263                 outb(IRCC_MASTER_ERROR_RESET, iobase + IRCC_MASTER);
1264                 outb(0x00, iobase + IRCC_MASTER);
1265         } else {
1266                 self->stats.tx_packets++;
1267                 self->stats.tx_bytes += self->tx_buff.len;
1268         }
1269
1270         /* Check if it's time to change the speed */
1271         if (self->new_speed) {
1272                 smsc_ircc_change_speed(self, self->new_speed);
1273                 self->new_speed = 0;
1274         }
1275
1276         netif_wake_queue(self->netdev);
1277 }
1278
1279 /*
1280  * Function smsc_ircc_dma_receive(self)
1281  *
1282  *    Get ready for receiving a frame. The device will initiate a DMA
1283  *    if it starts to receive a frame.
1284  *
1285  */
1286 static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self)
1287 {
1288         int iobase = self->io.fir_base;
1289 #if 0
1290         /* Turn off chip DMA */
1291         register_bank(iobase, 1);
1292         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1293              iobase + IRCC_SCE_CFGB);
1294 #endif
1295
1296         /* Disable Tx */
1297         register_bank(iobase, 0);
1298         outb(0x00, iobase + IRCC_LCR_B);
1299
1300         /* Turn off chip DMA */
1301         register_bank(iobase, 1);
1302         outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1303              iobase + IRCC_SCE_CFGB);
1304
1305         self->io.direction = IO_RECV;
1306         self->rx_buff.data = self->rx_buff.head;
1307
1308         /* Set max Rx frame size */
1309         register_bank(iobase, 4);
1310         outb((2050 >> 8) & 0x0f, iobase + IRCC_RX_SIZE_HI);
1311         outb(2050 & 0xff, iobase + IRCC_RX_SIZE_LO);
1312
1313         /* Setup DMA controller */
1314         irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1315                        DMA_RX_MODE);
1316
1317         /* Enable burst mode chip Rx DMA */
1318         register_bank(iobase, 1);
1319         outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE |
1320              IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB);
1321
1322         /* Enable interrupt */
1323         register_bank(iobase, 0);
1324         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1325         outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER);
1326
1327         /* Enable receiver */
1328         register_bank(iobase, 0);
1329         outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE,
1330              iobase + IRCC_LCR_B);
1331
1332         return 0;
1333 }
1334
1335 /*
1336  * Function smsc_ircc_dma_receive_complete(self)
1337  *
1338  *    Finished with receiving frames
1339  *
1340  */
1341 static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self)
1342 {
1343         struct sk_buff *skb;
1344         int len, msgcnt, lsr;
1345         int iobase = self->io.fir_base;
1346
1347         register_bank(iobase, 0);
1348
1349         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1350 #if 0
1351         /* Disable Rx */
1352         register_bank(iobase, 0);
1353         outb(0x00, iobase + IRCC_LCR_B);
1354 #endif
1355         register_bank(iobase, 0);
1356         outb(inb(iobase + IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase + IRCC_LSAR);
1357         lsr= inb(iobase + IRCC_LSR);
1358         msgcnt = inb(iobase + IRCC_LCR_B) & 0x08;
1359
1360         IRDA_DEBUG(2, "%s: dma count = %d\n", __FUNCTION__,
1361                    get_dma_residue(self->io.dma));
1362
1363         len = self->rx_buff.truesize - get_dma_residue(self->io.dma);
1364
1365         /* Look for errors */
1366         if (lsr & (IRCC_LSR_FRAME_ERROR | IRCC_LSR_CRC_ERROR | IRCC_LSR_SIZE_ERROR)) {
1367                 self->stats.rx_errors++;
1368                 if (lsr & IRCC_LSR_FRAME_ERROR)
1369                         self->stats.rx_frame_errors++;
1370                 if (lsr & IRCC_LSR_CRC_ERROR)
1371                         self->stats.rx_crc_errors++;
1372                 if (lsr & IRCC_LSR_SIZE_ERROR)
1373                         self->stats.rx_length_errors++;
1374                 if (lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN))
1375                         self->stats.rx_length_errors++;
1376                 return;
1377         }
1378
1379         /* Remove CRC */
1380         len -= self->io.speed < 4000000 ? 2 : 4;
1381
1382         if (len < 2 || len > 2050) {
1383                 IRDA_WARNING("%s(), bogus len=%d\n", __FUNCTION__, len);
1384                 return;
1385         }
1386         IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __FUNCTION__, msgcnt, len);
1387
1388         skb = dev_alloc_skb(len + 1);
1389         if (!skb) {
1390                 IRDA_WARNING("%s(), memory squeeze, dropping frame.\n",
1391                              __FUNCTION__);
1392                 return;
1393         }
1394         /* Make sure IP header gets aligned */
1395         skb_reserve(skb, 1);
1396
1397         memcpy(skb_put(skb, len), self->rx_buff.data, len);
1398         self->stats.rx_packets++;
1399         self->stats.rx_bytes += len;
1400
1401         skb->dev = self->netdev;
1402         skb->mac.raw  = skb->data;
1403         skb->protocol = htons(ETH_P_IRDA);
1404         netif_rx(skb);
1405 }
1406
1407 /*
1408  * Function smsc_ircc_sir_receive (self)
1409  *
1410  *    Receive one frame from the infrared port
1411  *
1412  */
1413 static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self)
1414 {
1415         int boguscount = 0;
1416         int iobase;
1417
1418         IRDA_ASSERT(self != NULL, return;);
1419
1420         iobase = self->io.sir_base;
1421
1422         /*
1423          * Receive all characters in Rx FIFO, unwrap and unstuff them.
1424          * async_unwrap_char will deliver all found frames
1425          */
1426         do {
1427                 async_unwrap_char(self->netdev, &self->stats, &self->rx_buff,
1428                                   inb(iobase + UART_RX));
1429
1430                 /* Make sure we don't stay here to long */
1431                 if (boguscount++ > 32) {
1432                         IRDA_DEBUG(2, "%s(), breaking!\n", __FUNCTION__);
1433                         break;
1434                 }
1435         } while (inb(iobase + UART_LSR) & UART_LSR_DR);
1436 }
1437
1438
1439 /*
1440  * Function smsc_ircc_interrupt (irq, dev_id, regs)
1441  *
1442  *    An interrupt from the chip has arrived. Time to do some work
1443  *
1444  */
1445 static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1446 {
1447         struct net_device *dev = (struct net_device *) dev_id;
1448         struct smsc_ircc_cb *self;
1449         int iobase, iir, lcra, lsr;
1450         irqreturn_t ret = IRQ_NONE;
1451
1452         if (dev == NULL) {
1453                 printk(KERN_WARNING "%s: irq %d for unknown device.\n",
1454                        driver_name, irq);
1455                 goto irq_ret;
1456         }
1457
1458         self = netdev_priv(dev);
1459         IRDA_ASSERT(self != NULL, return IRQ_NONE;);
1460
1461         /* Serialise the interrupt handler in various CPUs, stop Tx path */
1462         spin_lock(&self->lock);
1463
1464         /* Check if we should use the SIR interrupt handler */
1465         if (self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED) {
1466                 ret = smsc_ircc_interrupt_sir(dev);
1467                 goto irq_ret_unlock;
1468         }
1469
1470         iobase = self->io.fir_base;
1471
1472         register_bank(iobase, 0);
1473         iir = inb(iobase + IRCC_IIR);
1474         if (iir == 0)
1475                 goto irq_ret_unlock;
1476         ret = IRQ_HANDLED;
1477
1478         /* Disable interrupts */
1479         outb(0, iobase + IRCC_IER);
1480         lcra = inb(iobase + IRCC_LCR_A);
1481         lsr = inb(iobase + IRCC_LSR);
1482
1483         IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __FUNCTION__, iir);
1484
1485         if (iir & IRCC_IIR_EOM) {
1486                 if (self->io.direction == IO_RECV)
1487                         smsc_ircc_dma_receive_complete(self);
1488                 else
1489                         smsc_ircc_dma_xmit_complete(self);
1490
1491                 smsc_ircc_dma_receive(self);
1492         }
1493
1494         if (iir & IRCC_IIR_ACTIVE_FRAME) {
1495                 /*printk(KERN_WARNING "%s(): Active Frame\n", __FUNCTION__);*/
1496         }
1497
1498         /* Enable interrupts again */
1499
1500         register_bank(iobase, 0);
1501         outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1502
1503  irq_ret_unlock:
1504         spin_unlock(&self->lock);
1505  irq_ret:
1506         return ret;
1507 }
1508
1509 /*
1510  * Function irport_interrupt_sir (irq, dev_id, regs)
1511  *
1512  *    Interrupt handler for SIR modes
1513  */
1514 static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev)
1515 {
1516         struct smsc_ircc_cb *self = netdev_priv(dev);
1517         int boguscount = 0;
1518         int iobase;
1519         int iir, lsr;
1520
1521         /* Already locked comming here in smsc_ircc_interrupt() */
1522         /*spin_lock(&self->lock);*/
1523
1524         iobase = self->io.sir_base;
1525
1526         iir = inb(iobase + UART_IIR) & UART_IIR_ID;
1527         if (iir == 0)
1528                 return IRQ_NONE;
1529         while (iir) {
1530                 /* Clear interrupt */
1531                 lsr = inb(iobase + UART_LSR);
1532
1533                 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n",
1534                             __FUNCTION__, iir, lsr, iobase);
1535
1536                 switch (iir) {
1537                 case UART_IIR_RLSI:
1538                         IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__);
1539                         break;
1540                 case UART_IIR_RDI:
1541                         /* Receive interrupt */
1542                         smsc_ircc_sir_receive(self);
1543                         break;
1544                 case UART_IIR_THRI:
1545                         if (lsr & UART_LSR_THRE)
1546                                 /* Transmitter ready for data */
1547                                 smsc_ircc_sir_write_wakeup(self);
1548                         break;
1549                 default:
1550                         IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n",
1551                                    __FUNCTION__, iir);
1552                         break;
1553                 }
1554
1555                 /* Make sure we don't stay here to long */
1556                 if (boguscount++ > 100)
1557                         break;
1558
1559                 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
1560         }
1561         /*spin_unlock(&self->lock);*/
1562         return IRQ_HANDLED;
1563 }
1564
1565
1566 #if 0 /* unused */
1567 /*
1568  * Function ircc_is_receiving (self)
1569  *
1570  *    Return TRUE is we are currently receiving a frame
1571  *
1572  */
1573 static int ircc_is_receiving(struct smsc_ircc_cb *self)
1574 {
1575         int status = FALSE;
1576         /* int iobase; */
1577
1578         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1579
1580         IRDA_ASSERT(self != NULL, return FALSE;);
1581
1582         IRDA_DEBUG(0, "%s: dma count = %d\n", __FUNCTION__,
1583                    get_dma_residue(self->io.dma));
1584
1585         status = (self->rx_buff.state != OUTSIDE_FRAME);
1586
1587         return status;
1588 }
1589 #endif /* unused */
1590
1591 static int smsc_ircc_request_irq(struct smsc_ircc_cb *self)
1592 {
1593         int error;
1594
1595         error = request_irq(self->io.irq, smsc_ircc_interrupt, 0,
1596                             self->netdev->name, self->netdev);
1597         if (error)
1598                 IRDA_DEBUG(0, "%s(), unable to allocate irq=%d, err=%d\n",
1599                            __FUNCTION__, self->io.irq, error);
1600
1601         return error;
1602 }
1603
1604 static void smsc_ircc_start_interrupts(struct smsc_ircc_cb *self)
1605 {
1606         unsigned long flags;
1607
1608         spin_lock_irqsave(&self->lock, flags);
1609
1610         self->io.speed = 0;
1611         smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
1612
1613         spin_unlock_irqrestore(&self->lock, flags);
1614 }
1615
1616 static void smsc_ircc_stop_interrupts(struct smsc_ircc_cb *self)
1617 {
1618         int iobase = self->io.fir_base;
1619         unsigned long flags;
1620
1621         spin_lock_irqsave(&self->lock, flags);
1622
1623         register_bank(iobase, 0);
1624         outb(0, iobase + IRCC_IER);
1625         outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
1626         outb(0x00, iobase + IRCC_MASTER);
1627
1628         spin_unlock_irqrestore(&self->lock, flags);
1629 }
1630
1631
1632 /*
1633  * Function smsc_ircc_net_open (dev)
1634  *
1635  *    Start the device
1636  *
1637  */
1638 static int smsc_ircc_net_open(struct net_device *dev)
1639 {
1640         struct smsc_ircc_cb *self;
1641         char hwname[16];
1642
1643         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1644
1645         IRDA_ASSERT(dev != NULL, return -1;);
1646         self = netdev_priv(dev);
1647         IRDA_ASSERT(self != NULL, return 0;);
1648
1649         if (self->io.suspended) {
1650                 IRDA_DEBUG(0, "%s(), device is suspended\n", __FUNCTION__);
1651                 return -EAGAIN;
1652         }
1653
1654         if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name,
1655                         (void *) dev)) {
1656                 IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n",
1657                            __FUNCTION__, self->io.irq);
1658                 return -EAGAIN;
1659         }
1660
1661         smsc_ircc_start_interrupts(self);
1662
1663         /* Give self a hardware name */
1664         /* It would be cool to offer the chip revision here - Jean II */
1665         sprintf(hwname, "SMSC @ 0x%03x", self->io.fir_base);
1666
1667         /*
1668          * Open new IrLAP layer instance, now that everything should be
1669          * initialized properly
1670          */
1671         self->irlap = irlap_open(dev, &self->qos, hwname);
1672
1673         /*
1674          * Always allocate the DMA channel after the IRQ,
1675          * and clean up on failure.
1676          */
1677         if (request_dma(self->io.dma, dev->name)) {
1678                 smsc_ircc_net_close(dev);
1679
1680                 IRDA_WARNING("%s(), unable to allocate DMA=%d\n",
1681                              __FUNCTION__, self->io.dma);
1682                 return -EAGAIN;
1683         }
1684
1685         netif_start_queue(dev);
1686
1687         return 0;
1688 }
1689
1690 /*
1691  * Function smsc_ircc_net_close (dev)
1692  *
1693  *    Stop the device
1694  *
1695  */
1696 static int smsc_ircc_net_close(struct net_device *dev)
1697 {
1698         struct smsc_ircc_cb *self;
1699
1700         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1701
1702         IRDA_ASSERT(dev != NULL, return -1;);
1703         self = netdev_priv(dev);
1704         IRDA_ASSERT(self != NULL, return 0;);
1705
1706         /* Stop device */
1707         netif_stop_queue(dev);
1708
1709         /* Stop and remove instance of IrLAP */
1710         if (self->irlap)
1711                 irlap_close(self->irlap);
1712         self->irlap = NULL;
1713
1714         smsc_ircc_stop_interrupts(self);
1715
1716         /* if we are called from smsc_ircc_resume we don't have IRQ reserved */
1717         if (!self->io.suspended)
1718                 free_irq(self->io.irq, dev);
1719
1720         disable_dma(self->io.dma);
1721         free_dma(self->io.dma);
1722
1723         return 0;
1724 }
1725
1726 static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state)
1727 {
1728         struct smsc_ircc_cb *self = platform_get_drvdata(dev);
1729
1730         if (!self->io.suspended) {
1731                 IRDA_DEBUG(1, "%s, Suspending\n", driver_name);
1732
1733                 rtnl_lock();
1734                 if (netif_running(self->netdev)) {
1735                         netif_device_detach(self->netdev);
1736                         smsc_ircc_stop_interrupts(self);
1737                         free_irq(self->io.irq, self->netdev);
1738                         disable_dma(self->io.dma);
1739                 }
1740                 self->io.suspended = 1;
1741                 rtnl_unlock();
1742         }
1743
1744         return 0;
1745 }
1746
1747 static int smsc_ircc_resume(struct platform_device *dev)
1748 {
1749         struct smsc_ircc_cb *self = platform_get_drvdata(dev);
1750
1751         if (self->io.suspended) {
1752                 IRDA_DEBUG(1, "%s, Waking up\n", driver_name);
1753
1754                 rtnl_lock();
1755                 smsc_ircc_init_chip(self);
1756                 if (netif_running(self->netdev)) {
1757                         if (smsc_ircc_request_irq(self)) {
1758                                 /*
1759                                  * Don't fail resume process, just kill this
1760                                  * network interface
1761                                  */
1762                                 unregister_netdevice(self->netdev);
1763                         } else {
1764                                 enable_dma(self->io.dma);
1765                                 smsc_ircc_start_interrupts(self);
1766                                 netif_device_attach(self->netdev);
1767                         }
1768                 }
1769                 self->io.suspended = 0;
1770                 rtnl_unlock();
1771         }
1772         return 0;
1773 }
1774
1775 /*
1776  * Function smsc_ircc_close (self)
1777  *
1778  *    Close driver instance
1779  *
1780  */
1781 static int __exit smsc_ircc_close(struct smsc_ircc_cb *self)
1782 {
1783         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1784
1785         IRDA_ASSERT(self != NULL, return -1;);
1786
1787         platform_device_unregister(self->pldev);
1788
1789         /* Remove netdevice */
1790         unregister_netdev(self->netdev);
1791
1792         smsc_ircc_stop_interrupts(self);
1793
1794         /* Release the PORTS that this driver is using */
1795         IRDA_DEBUG(0, "%s(), releasing 0x%03x\n",  __FUNCTION__,
1796                    self->io.fir_base);
1797
1798         release_region(self->io.fir_base, self->io.fir_ext);
1799
1800         IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__,
1801                    self->io.sir_base);
1802
1803         release_region(self->io.sir_base, self->io.sir_ext);
1804
1805         if (self->tx_buff.head)
1806                 dma_free_coherent(NULL, self->tx_buff.truesize,
1807                                   self->tx_buff.head, self->tx_buff_dma);
1808
1809         if (self->rx_buff.head)
1810                 dma_free_coherent(NULL, self->rx_buff.truesize,
1811                                   self->rx_buff.head, self->rx_buff_dma);
1812
1813         free_netdev(self->netdev);
1814
1815         return 0;
1816 }
1817
1818 static void __exit smsc_ircc_cleanup(void)
1819 {
1820         int i;
1821
1822         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
1823
1824         for (i = 0; i < 2; i++) {
1825                 if (dev_self[i])
1826                         smsc_ircc_close(dev_self[i]);
1827         }
1828
1829         platform_driver_unregister(&smsc_ircc_driver);
1830 }
1831
1832 /*
1833  *      Start SIR operations
1834  *
1835  * This function *must* be called with spinlock held, because it may
1836  * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II
1837  */
1838 void smsc_ircc_sir_start(struct smsc_ircc_cb *self)
1839 {
1840         struct net_device *dev;
1841         int fir_base, sir_base;
1842
1843         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1844
1845         IRDA_ASSERT(self != NULL, return;);
1846         dev = self->netdev;
1847         IRDA_ASSERT(dev != NULL, return;);
1848         dev->hard_start_xmit = &smsc_ircc_hard_xmit_sir;
1849
1850         fir_base = self->io.fir_base;
1851         sir_base = self->io.sir_base;
1852
1853         /* Reset everything */
1854         outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);
1855
1856         #if SMSC_IRCC2_C_SIR_STOP
1857         /*smsc_ircc_sir_stop(self);*/
1858         #endif
1859
1860         register_bank(fir_base, 1);
1861         outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | IRCC_CFGA_IRDA_SIR_A), fir_base + IRCC_SCE_CFGA);
1862
1863         /* Initialize UART */
1864         outb(UART_LCR_WLEN8, sir_base + UART_LCR);  /* Reset DLAB */
1865         outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), sir_base + UART_MCR);
1866
1867         /* Turn on interrups */
1868         outb(UART_IER_RLSI | UART_IER_RDI |UART_IER_THRI, sir_base + UART_IER);
1869
1870         IRDA_DEBUG(3, "%s() - exit\n", __FUNCTION__);
1871
1872         outb(0x00, fir_base + IRCC_MASTER);
1873 }
1874
1875 #if SMSC_IRCC2_C_SIR_STOP
1876 void smsc_ircc_sir_stop(struct smsc_ircc_cb *self)
1877 {
1878         int iobase;
1879
1880         IRDA_DEBUG(3, "%s\n", __FUNCTION__);
1881         iobase = self->io.sir_base;
1882
1883         /* Reset UART */
1884         outb(0, iobase + UART_MCR);
1885
1886         /* Turn off interrupts */
1887         outb(0, iobase + UART_IER);
1888 }
1889 #endif
1890
1891 /*
1892  * Function smsc_sir_write_wakeup (self)
1893  *
1894  *    Called by the SIR interrupt handler when there's room for more data.
1895  *    If we have more packets to send, we send them here.
1896  *
1897  */
1898 static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self)
1899 {
1900         int actual = 0;
1901         int iobase;
1902         int fcr;
1903
1904         IRDA_ASSERT(self != NULL, return;);
1905
1906         IRDA_DEBUG(4, "%s\n", __FUNCTION__);
1907
1908         iobase = self->io.sir_base;
1909
1910         /* Finished with frame?  */
1911         if (self->tx_buff.len > 0)  {
1912                 /* Write data left in transmit buffer */
1913                 actual = smsc_ircc_sir_write(iobase, self->io.fifo_size,
1914                                       self->tx_buff.data, self->tx_buff.len);
1915                 self->tx_buff.data += actual;
1916                 self->tx_buff.len  -= actual;
1917         } else {
1918
1919         /*if (self->tx_buff.len ==0)  {*/
1920
1921                 /*
1922                  *  Now serial buffer is almost free & we can start
1923                  *  transmission of another packet. But first we must check
1924                  *  if we need to change the speed of the hardware
1925                  */
1926                 if (self->new_speed) {
1927                         IRDA_DEBUG(5, "%s(), Changing speed to %d.\n",
1928                                    __FUNCTION__, self->new_speed);
1929                         smsc_ircc_sir_wait_hw_transmitter_finish(self);
1930                         smsc_ircc_change_speed(self, self->new_speed);
1931                         self->new_speed = 0;
1932                 } else {
1933                         /* Tell network layer that we want more frames */
1934                         netif_wake_queue(self->netdev);
1935                 }
1936                 self->stats.tx_packets++;
1937
1938                 if (self->io.speed <= 115200) {
1939                         /*
1940                          * Reset Rx FIFO to make sure that all reflected transmit data
1941                          * is discarded. This is needed for half duplex operation
1942                          */
1943                         fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR;
1944                         fcr |= self->io.speed < 38400 ?
1945                                         UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14;
1946
1947                         outb(fcr, iobase + UART_FCR);
1948
1949                         /* Turn on receive interrupts */
1950                         outb(UART_IER_RDI, iobase + UART_IER);
1951                 }
1952         }
1953 }
1954
1955 /*
1956  * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len)
1957  *
1958  *    Fill Tx FIFO with transmit data
1959  *
1960  */
1961 static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
1962 {
1963         int actual = 0;
1964
1965         /* Tx FIFO should be empty! */
1966         if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) {
1967                 IRDA_WARNING("%s(), failed, fifo not empty!\n", __FUNCTION__);
1968                 return 0;
1969         }
1970
1971         /* Fill FIFO with current frame */
1972         while (fifo_size-- > 0 && actual < len) {
1973                 /* Transmit next byte */
1974                 outb(buf[actual], iobase + UART_TX);
1975                 actual++;
1976         }
1977         return actual;
1978 }
1979
1980 /*
1981  * Function smsc_ircc_is_receiving (self)
1982  *
1983  *    Returns true is we are currently receiving data
1984  *
1985  */
1986 static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self)
1987 {
1988         return (self->rx_buff.state != OUTSIDE_FRAME);
1989 }
1990
1991
1992 /*
1993  * Function smsc_ircc_probe_transceiver(self)
1994  *
1995  *    Tries to find the used Transceiver
1996  *
1997  */
1998 static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self)
1999 {
2000         unsigned int    i;
2001
2002         IRDA_ASSERT(self != NULL, return;);
2003
2004         for (i = 0; smsc_transceivers[i].name != NULL; i++)
2005                 if (smsc_transceivers[i].probe(self->io.fir_base)) {
2006                         IRDA_MESSAGE(" %s transceiver found\n",
2007                                      smsc_transceivers[i].name);
2008                         self->transceiver= i + 1;
2009                         return;
2010                 }
2011
2012         IRDA_MESSAGE("No transceiver found. Defaulting to %s\n",
2013                      smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name);
2014
2015         self->transceiver = SMSC_IRCC2_C_DEFAULT_TRANSCEIVER;
2016 }
2017
2018
2019 /*
2020  * Function smsc_ircc_set_transceiver_for_speed(self, speed)
2021  *
2022  *    Set the transceiver according to the speed
2023  *
2024  */
2025 static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed)
2026 {
2027         unsigned int trx;
2028
2029         trx = self->transceiver;
2030         if (trx > 0)
2031                 smsc_transceivers[trx - 1].set_for_speed(self->io.fir_base, speed);
2032 }
2033
2034 /*
2035  * Function smsc_ircc_wait_hw_transmitter_finish ()
2036  *
2037  *    Wait for the real end of HW transmission
2038  *
2039  * The UART is a strict FIFO, and we get called only when we have finished
2040  * pushing data to the FIFO, so the maximum amount of time we must wait
2041  * is only for the FIFO to drain out.
2042  *
2043  * We use a simple calibrated loop. We may need to adjust the loop
2044  * delay (udelay) to balance I/O traffic and latency. And we also need to
2045  * adjust the maximum timeout.
2046  * It would probably be better to wait for the proper interrupt,
2047  * but it doesn't seem to be available.
2048  *
2049  * We can't use jiffies or kernel timers because :
2050  * 1) We are called from the interrupt handler, which disable softirqs,
2051  * so jiffies won't be increased
2052  * 2) Jiffies granularity is usually very coarse (10ms), and we don't
2053  * want to wait that long to detect stuck hardware.
2054  * Jean II
2055  */
2056
2057 static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self)
2058 {
2059         int iobase = self->io.sir_base;
2060         int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US;
2061
2062         /* Calibrated busy loop */
2063         while (count-- > 0 && !(inb(iobase + UART_LSR) & UART_LSR_TEMT))
2064                 udelay(1);
2065
2066         if (count == 0)
2067                 IRDA_DEBUG(0, "%s(): stuck transmitter\n", __FUNCTION__);
2068 }
2069
2070
2071 /* PROBING
2072  *
2073  *
2074  */
2075
2076 static int __init smsc_ircc_look_for_chips(void)
2077 {
2078         struct smsc_chip_address *address;
2079         char *type;
2080         unsigned int cfg_base, found;
2081
2082         found = 0;
2083         address = possible_addresses;
2084
2085         while (address->cfg_base) {
2086                 cfg_base = address->cfg_base;
2087
2088                 /*printk(KERN_WARNING "%s(): probing: 0x%02x for: 0x%02x\n", __FUNCTION__, cfg_base, address->type);*/
2089
2090                 if (address->type & SMSCSIO_TYPE_FDC) {
2091                         type = "FDC";
2092                         if (address->type & SMSCSIO_TYPE_FLAT)
2093                                 if (!smsc_superio_flat(fdc_chips_flat, cfg_base, type))
2094                                         found++;
2095
2096                         if (address->type & SMSCSIO_TYPE_PAGED)
2097                                 if (!smsc_superio_paged(fdc_chips_paged, cfg_base, type))
2098                                         found++;
2099                 }
2100                 if (address->type & SMSCSIO_TYPE_LPC) {
2101                         type = "LPC";
2102                         if (address->type & SMSCSIO_TYPE_FLAT)
2103                                 if (!smsc_superio_flat(lpc_chips_flat, cfg_base, type))
2104                                         found++;
2105
2106                         if (address->type & SMSCSIO_TYPE_PAGED)
2107                                 if (!smsc_superio_paged(lpc_chips_paged, cfg_base, type))
2108                                         found++;
2109                 }
2110                 address++;
2111         }
2112         return found;
2113 }
2114
2115 /*
2116  * Function smsc_superio_flat (chip, base, type)
2117  *
2118  *    Try to get configuration of a smc SuperIO chip with flat register model
2119  *
2120  */
2121 static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfgbase, char *type)
2122 {
2123         unsigned short firbase, sirbase;
2124         u8 mode, dma, irq;
2125         int ret = -ENODEV;
2126
2127         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
2128
2129         if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type) == NULL)
2130                 return ret;
2131
2132         outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase);
2133         mode = inb(cfgbase + 1);
2134
2135         /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __FUNCTION__, mode);*/
2136
2137         if (!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA))
2138                 IRDA_WARNING("%s(): IrDA not enabled\n", __FUNCTION__);
2139
2140         outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase);
2141         sirbase = inb(cfgbase + 1) << 2;
2142
2143         /* FIR iobase */
2144         outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase);
2145         firbase = inb(cfgbase + 1) << 3;
2146
2147         /* DMA */
2148         outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase);
2149         dma = inb(cfgbase + 1) & SMSCSIOFLAT_FIRDMASELECT_MASK;
2150
2151         /* IRQ */
2152         outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase);
2153         irq = inb(cfgbase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK;
2154
2155         IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __FUNCTION__, firbase, sirbase, dma, irq, mode);
2156
2157         if (firbase && smsc_ircc_open(firbase, sirbase, dma, irq) == 0)
2158                 ret = 0;
2159
2160         /* Exit configuration */
2161         outb(SMSCSIO_CFGEXITKEY, cfgbase);
2162
2163         return ret;
2164 }
2165
2166 /*
2167  * Function smsc_superio_paged (chip, base, type)
2168  *
2169  *    Try  to get configuration of a smc SuperIO chip with paged register model
2170  *
2171  */
2172 static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type)
2173 {
2174         unsigned short fir_io, sir_io;
2175         int ret = -ENODEV;
2176
2177         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
2178
2179         if (smsc_ircc_probe(cfg_base, 0x20, chips, type) == NULL)
2180                 return ret;
2181
2182         /* Select logical device (UART2) */
2183         outb(0x07, cfg_base);
2184         outb(0x05, cfg_base + 1);
2185
2186         /* SIR iobase */
2187         outb(0x60, cfg_base);
2188         sir_io = inb(cfg_base + 1) << 8;
2189         outb(0x61, cfg_base);
2190         sir_io |= inb(cfg_base + 1);
2191
2192         /* Read FIR base */
2193         outb(0x62, cfg_base);
2194         fir_io = inb(cfg_base + 1) << 8;
2195         outb(0x63, cfg_base);
2196         fir_io |= inb(cfg_base + 1);
2197         outb(0x2b, cfg_base); /* ??? */
2198
2199         if (fir_io && smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0)
2200                 ret = 0;
2201
2202         /* Exit configuration */
2203         outb(SMSCSIO_CFGEXITKEY, cfg_base);
2204
2205         return ret;
2206 }
2207
2208
2209 static int __init smsc_access(unsigned short cfg_base, unsigned char reg)
2210 {
2211         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
2212
2213         outb(reg, cfg_base);
2214         return inb(cfg_base) != reg ? -1 : 0;
2215 }
2216
2217 static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type)
2218 {
2219         u8 devid, xdevid, rev;
2220
2221         IRDA_DEBUG(1, "%s\n", __FUNCTION__);
2222
2223         /* Leave configuration */
2224
2225         outb(SMSCSIO_CFGEXITKEY, cfg_base);
2226
2227         if (inb(cfg_base) == SMSCSIO_CFGEXITKEY)        /* not a smc superio chip */
2228                 return NULL;
2229
2230         outb(reg, cfg_base);
2231
2232         xdevid = inb(cfg_base + 1);
2233
2234         /* Enter configuration */
2235
2236         outb(SMSCSIO_CFGACCESSKEY, cfg_base);
2237
2238         #if 0
2239         if (smsc_access(cfg_base,0x55)) /* send second key and check */
2240                 return NULL;
2241         #endif
2242
2243         /* probe device ID */
2244
2245         if (smsc_access(cfg_base, reg))
2246                 return NULL;
2247
2248         devid = inb(cfg_base + 1);
2249
2250         if (devid == 0 || devid == 0xff)        /* typical values for unused port */
2251                 return NULL;
2252
2253         /* probe revision ID */
2254
2255         if (smsc_access(cfg_base, reg + 1))
2256                 return NULL;
2257
2258         rev = inb(cfg_base + 1);
2259
2260         if (rev >= 128)                 /* i think this will make no sense */
2261                 return NULL;
2262
2263         if (devid == xdevid)            /* protection against false positives */
2264                 return NULL;
2265
2266         /* Check for expected device ID; are there others? */
2267
2268         while (chip->devid != devid) {
2269
2270                 chip++;
2271
2272                 if (chip->name == NULL)
2273                         return NULL;
2274         }
2275
2276         IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n",
2277                      devid, rev, cfg_base, type, chip->name);
2278
2279         if (chip->rev > rev) {
2280                 IRDA_MESSAGE("Revision higher than expected\n");
2281                 return NULL;
2282         }
2283
2284         if (chip->flags & NoIRDA)
2285                 IRDA_MESSAGE("chipset does not support IRDA\n");
2286
2287         return chip;
2288 }
2289
2290 static int __init smsc_superio_fdc(unsigned short cfg_base)
2291 {
2292         int ret = -1;
2293
2294         if (!request_region(cfg_base, 2, driver_name)) {
2295                 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
2296                              __FUNCTION__, cfg_base);
2297         } else {
2298                 if (!smsc_superio_flat(fdc_chips_flat, cfg_base, "FDC") ||
2299                     !smsc_superio_paged(fdc_chips_paged, cfg_base, "FDC"))
2300                         ret =  0;
2301
2302                 release_region(cfg_base, 2);
2303         }
2304
2305         return ret;
2306 }
2307
2308 static int __init smsc_superio_lpc(unsigned short cfg_base)
2309 {
2310         int ret = -1;
2311
2312         if (!request_region(cfg_base, 2, driver_name)) {
2313                 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
2314                              __FUNCTION__, cfg_base);
2315         } else {
2316                 if (!smsc_superio_flat(lpc_chips_flat, cfg_base, "LPC") ||
2317                     !smsc_superio_paged(lpc_chips_paged, cfg_base, "LPC"))
2318                         ret = 0;
2319
2320                 release_region(cfg_base, 2);
2321         }
2322         return ret;
2323 }
2324
2325 /*
2326  * Look for some specific subsystem setups that need
2327  * pre-configuration not properly done by the BIOS (especially laptops)
2328  * This code is based in part on smcinit.c, tosh1800-smcinit.c
2329  * and tosh2450-smcinit.c. The table lists the device entries
2330  * for ISA bridges with an LPC (Local Peripheral Configurator)
2331  * that are in turn used to configure the SMSC device with default
2332  * SIR and FIR I/O ports, DMA and IRQ.
2333  */
2334 #ifdef CONFIG_PCI
2335 #define PCIID_VENDOR_INTEL 0x8086
2336 #define PCIID_VENDOR_ALI 0x10b9
2337 static struct smsc_ircc_subsystem_configuration subsystem_configurations[] __devinitdata = {
2338         {
2339                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2340                 .device = 0x24cc,
2341                 .subvendor = 0x103c,
2342                 .subdevice = 0x088c,
2343                 .sir_io = 0x02f8, /* Quite certain these are the same for nc8000 as for nc6000 */
2344                 .fir_io = 0x0130,
2345                 .fir_irq = 0x09,
2346                 .fir_dma = 0x03,
2347                 .cfg_base = 0x004e,
2348                 .preconfigure = preconfigure_through_82801,
2349                 .name = "HP nc8000",
2350         },
2351         {
2352                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2353                 .device = 0x24cc,
2354                 .subvendor = 0x103c,
2355                 .subdevice = 0x0890,
2356                 .sir_io = 0x02f8,
2357                 .fir_io = 0x0130,
2358                 .fir_irq = 0x09,
2359                 .fir_dma = 0x03,
2360                 .cfg_base = 0x004e,
2361                 .preconfigure = preconfigure_through_82801,
2362                 .name = "HP nc6000",
2363         },
2364         {
2365                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */
2366                 .device = 0x24c0,
2367                 .subvendor = 0x1179,
2368                 .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */
2369                 .sir_io = 0x03f8,
2370                 .fir_io = 0x0130,
2371                 .fir_irq = 0x07,
2372                 .fir_dma = 0x01,
2373                 .cfg_base = 0x002e,
2374                 .preconfigure = preconfigure_through_82801,
2375                 .name = "Toshiba Satellite 2450",
2376         },
2377         {
2378                 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */
2379                 .device = 0x248c, /* Some use 24cc? */
2380                 .subvendor = 0x1179,
2381                 .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */
2382                 .sir_io = 0x03f8,
2383                 .fir_io = 0x0130,
2384                 .fir_irq = 0x03,
2385                 .fir_dma = 0x03,
2386                 .cfg_base = 0x002e,
2387                 .preconfigure = preconfigure_through_82801,
2388                 .name = "Toshiba Satellite 5100/5200, Tecra 9100",
2389         },
2390         {
2391                 .vendor = PCIID_VENDOR_ALI, /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */
2392                 .device = 0x1533,
2393                 .subvendor = 0x1179,
2394                 .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */
2395                 .sir_io = 0x02e8,
2396                 .fir_io = 0x02f8,
2397                 .fir_irq = 0x07,
2398                 .fir_dma = 0x03,
2399                 .cfg_base = 0x002e,
2400                 .preconfigure = preconfigure_through_ali,
2401                 .name = "Toshiba Satellite 1800",
2402         },
2403         { } // Terminator
2404 };
2405
2406
2407 /*
2408  * This sets up the basic SMSC parameters (FIR port, SIR port, FIR DMA, FIR IRQ)
2409  * through the chip configuration port.
2410  */
2411 static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf)
2412 {
2413         unsigned short iobase = conf->cfg_base;
2414         unsigned char tmpbyte;
2415
2416         outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state
2417         outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID
2418         tmpbyte = inb(iobase +1); // Read device ID
2419         IRDA_DEBUG(0, "Detected Chip id: 0x%02x, setting up registers...\n",tmpbyte);
2420
2421         /* Disable UART1 and set up SIR I/O port */
2422         outb(0x24, iobase);  // select CR24 - UART1 base addr
2423         outb(0x00, iobase + 1); // disable UART1
2424         outb(SMSCSIOFLAT_UART2BASEADDR_REG, iobase);  // select CR25 - UART2 base addr
2425         outb( (conf->sir_io >> 2), iobase + 1); // bits 2-9 of 0x3f8
2426         tmpbyte = inb(iobase + 1);
2427         if (tmpbyte != (conf->sir_io >> 2) ) {
2428                 IRDA_WARNING("ERROR: could not configure SIR ioport.\n");
2429                 return -ENXIO;
2430         }
2431
2432         /* Set up FIR IRQ channel for UART2 */
2433         outb(SMSCSIOFLAT_UARTIRQSELECT_REG, iobase); // select CR28 - UART1,2 IRQ select
2434         tmpbyte = inb(iobase + 1);
2435         tmpbyte &= SMSCSIOFLAT_UART1IRQSELECT_MASK; // Do not touch the UART1 portion
2436         tmpbyte |= (conf->fir_irq & SMSCSIOFLAT_UART2IRQSELECT_MASK);
2437         outb(tmpbyte, iobase + 1);
2438         tmpbyte = inb(iobase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK;
2439         if (tmpbyte != conf->fir_irq) {
2440                 IRDA_WARNING("ERROR: could not configure FIR IRQ channel.\n");
2441                 return -ENXIO;
2442         }
2443
2444         /* Set up FIR I/O port */
2445         outb(SMSCSIOFLAT_FIRBASEADDR_REG, iobase);  // CR2B - SCE (FIR) base addr
2446         outb((conf->fir_io >> 3), iobase + 1);
2447         tmpbyte = inb(iobase + 1);
2448         if (tmpbyte != (conf->fir_io >> 3) ) {
2449                 IRDA_WARNING("ERROR: could not configure FIR I/O port.\n");
2450                 return -ENXIO;
2451         }
2452
2453         /* Set up FIR DMA channel */
2454         outb(SMSCSIOFLAT_FIRDMASELECT_REG, iobase);  // CR2C - SCE (FIR) DMA select
2455         outb((conf->fir_dma & LPC47N227_FIRDMASELECT_MASK), iobase + 1); // DMA
2456         tmpbyte = inb(iobase + 1) & LPC47N227_FIRDMASELECT_MASK;
2457         if (tmpbyte != (conf->fir_dma & LPC47N227_FIRDMASELECT_MASK)) {
2458                 IRDA_WARNING("ERROR: could not configure FIR DMA channel.\n");
2459                 return -ENXIO;
2460         }
2461
2462         outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase);  // CR0C - UART mode
2463         tmpbyte = inb(iobase + 1);
2464         tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK | SMSCSIOFLAT_UART2MODE_VAL_IRDA;
2465         outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed
2466
2467         outb(LPC47N227_APMBOOTDRIVE_REG, iobase);  // CR07 - Auto Pwr Mgt/boot drive sel
2468         tmpbyte = inb(iobase + 1);
2469         outb(tmpbyte | LPC47N227_UART2AUTOPWRDOWN_MASK, iobase + 1); // enable UART2 autopower down
2470
2471         /* This one was not part of tosh1800 */
2472         outb(0x0a, iobase);  // CR0a - ecp fifo / ir mux
2473         tmpbyte = inb(iobase + 1);
2474         outb(tmpbyte | 0x40, iobase + 1); // send active device to ir port
2475
2476         outb(LPC47N227_UART12POWER_REG, iobase);  // CR02 - UART 1,2 power
2477         tmpbyte = inb(iobase + 1);
2478         outb(tmpbyte | LPC47N227_UART2POWERDOWN_MASK, iobase + 1); // UART2 power up mode, UART1 power down
2479
2480         outb(LPC47N227_FDCPOWERVALIDCONF_REG, iobase);  // CR00 - FDC Power/valid config cycle
2481         tmpbyte = inb(iobase + 1);
2482         outb(tmpbyte | LPC47N227_VALID_MASK, iobase + 1); // valid config cycle done
2483
2484         outb(LPC47N227_CFGEXITKEY, iobase);  // Exit configuration
2485
2486         return 0;
2487 }
2488
2489 /* 82801CAM registers */
2490 #define VID 0x00
2491 #define DID 0x02
2492 #define PIRQA_ROUT 0x60
2493 #define PCI_DMA_C 0x90
2494 #define COM_DEC 0xe0
2495 #define LPC_EN 0xe6
2496 #define GEN2_DEC 0xec
2497 /*
2498  * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge or
2499  * Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge. They all work the same way!
2500  */
2501 static int __init preconfigure_through_82801(struct pci_dev *dev,
2502                                   struct smsc_ircc_subsystem_configuration *conf)
2503 {
2504         unsigned short tmpword;
2505         int ret;
2506
2507         IRDA_MESSAGE("Setting up the SMSC device via the 82801 controller.\n");
2508         pci_write_config_byte(dev, COM_DEC, 0x10);
2509
2510         /* Enable LPC */
2511         pci_read_config_word(dev, LPC_EN, &tmpword); /* LPC_EN register */
2512         tmpword &= 0xfffd; /* mask bit 1 */
2513         tmpword |= 0x0001; /* set bit 0 : COMA addr range enable */
2514         pci_write_config_word(dev, LPC_EN, tmpword);
2515
2516         /* Setup DMA */
2517         pci_write_config_word(dev, PCI_DMA_C, 0xc0c0); /* LPC I/F DMA on, channel 3  -- rtm (?? PCI DMA ?) */
2518         pci_write_config_word(dev, GEN2_DEC, 0x131); /* LPC I/F 2nd decode range */
2519
2520         /* Pre-configure chip */
2521         ret = preconfigure_smsc_chip(conf);
2522
2523         /* Disable LPC */
2524         pci_read_config_word(dev, LPC_EN, &tmpword); /* LPC_EN register */
2525         tmpword &= 0xfffc; /* mask bit 1 and bit 0, COMA addr range disable */
2526         pci_write_config_word(dev, LPC_EN, tmpword);
2527         return ret;
2528 }
2529
2530 static int __init preconfigure_through_ali(struct pci_dev *dev,
2531                                   struct smsc_ircc_subsystem_configuration *conf)
2532 {
2533         /* TODO: put in ALi 1533 configuration here. */
2534         IRDA_MESSAGE("SORRY: %s has an unsupported bridge controller (ALi): not pre-configured.\n", conf->name);
2535         return -ENODEV;
2536 }
2537
2538 static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
2539                                                     unsigned short ircc_fir,
2540                                                     unsigned short ircc_sir,
2541                                                     unsigned char ircc_dma,
2542                                                     unsigned char ircc_irq)
2543 {
2544         struct pci_dev *dev = NULL;
2545         unsigned short ss_vendor = 0x0000;
2546         unsigned short ss_device = 0x0000;
2547         int ret = 0;
2548
2549         dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
2550
2551         while (dev != NULL) {
2552                 struct smsc_ircc_subsystem_configuration *conf;
2553
2554                 /*
2555                  * Cache the subsystem vendor/device: some manufacturers fail to set
2556                  * this for all components, so we save it in case there is just
2557                  * 0x0000 0x0000 on the device we want to check.
2558                  */
2559                 if (dev->subsystem_vendor != 0x0000U) {
2560                         ss_vendor = dev->subsystem_vendor;
2561                         ss_device = dev->subsystem_device;
2562                 }
2563                 conf = subsystem_configurations;
2564                 for( ; conf->subvendor; conf++) {
2565                         if(conf->vendor == dev->vendor &&
2566                            conf->device == dev->device &&
2567                            conf->subvendor == ss_vendor && /* Sometimes these are cached values */
2568                            (conf->subdevice == ss_device || conf->subdevice == 0xffff)) {
2569                                 struct smsc_ircc_subsystem_configuration tmpconf;
2570
2571                                 memcpy(&tmpconf, conf, sizeof(struct smsc_ircc_subsystem_configuration));
2572
2573                                 /* Override the default values with anything passed in as parameter */
2574                                 if (ircc_cfg != 0)
2575                                         tmpconf.cfg_base = ircc_cfg;
2576                                 if (ircc_fir != 0)
2577                                         tmpconf.fir_io = ircc_fir;
2578                                 if (ircc_sir != 0)
2579                                         tmpconf.sir_io = ircc_sir;
2580                                 if (ircc_dma != 0xff)
2581                                         tmpconf.fir_dma = ircc_dma;
2582                                 if (ircc_irq != 0xff)
2583                                         tmpconf.fir_irq = ircc_irq;
2584
2585                                 IRDA_MESSAGE("Detected unconfigured %s SMSC IrDA chip, pre-configuring device.\n", conf->name);
2586                                 if (conf->preconfigure)
2587                                         ret = conf->preconfigure(dev, &tmpconf);
2588                                 else
2589                                         ret = -ENODEV;
2590                         }
2591                 }
2592                 dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
2593         }
2594
2595         return ret;
2596 }
2597 #endif // CONFIG_PCI
2598
2599 /************************************************
2600  *
2601  * Transceivers specific functions
2602  *
2603  ************************************************/
2604
2605
2606 /*
2607  * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed)
2608  *
2609  *    Program transceiver through smsc-ircc ATC circuitry
2610  *
2611  */
2612
2613 static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed)
2614 {
2615         unsigned long jiffies_now, jiffies_timeout;
2616         u8 val;
2617
2618         jiffies_now = jiffies;
2619         jiffies_timeout = jiffies + SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES;
2620
2621         /* ATC */
2622         register_bank(fir_base, 4);
2623         outb((inb(fir_base + IRCC_ATC) & IRCC_ATC_MASK) | IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE,
2624              fir_base + IRCC_ATC);
2625
2626         while ((val = (inb(fir_base + IRCC_ATC) & IRCC_ATC_nPROGREADY)) &&
2627                 !time_after(jiffies, jiffies_timeout))
2628                 /* empty */;
2629
2630         if (val)
2631                 IRDA_WARNING("%s(): ATC: 0x%02x\n", __FUNCTION__,
2632                              inb(fir_base + IRCC_ATC));
2633 }
2634
2635 /*
2636  * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base)
2637  *
2638  *    Probe transceiver smsc-ircc ATC circuitry
2639  *
2640  */
2641
2642 static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base)
2643 {
2644         return 0;
2645 }
2646
2647 /*
2648  * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed)
2649  *
2650  *    Set transceiver
2651  *
2652  */
2653
2654 static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed)
2655 {
2656         u8 fast_mode;
2657
2658         switch (speed) {
2659         default:
2660         case 576000 :
2661                 fast_mode = 0;
2662                 break;
2663         case 1152000 :
2664         case 4000000 :
2665                 fast_mode = IRCC_LCR_A_FAST;
2666                 break;
2667         }
2668         register_bank(fir_base, 0);
2669         outb((inb(fir_base + IRCC_LCR_A) & 0xbf) | fast_mode, fir_base + IRCC_LCR_A);
2670 }
2671
2672 /*
2673  * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base)
2674  *
2675  *    Probe transceiver
2676  *
2677  */
2678
2679 static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base)
2680 {
2681         return 0;
2682 }
2683
2684 /*
2685  * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed)
2686  *
2687  *    Set transceiver
2688  *
2689  */
2690
2691 static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed)
2692 {
2693         u8 fast_mode;
2694
2695         switch (speed) {
2696         default:
2697         case 576000 :
2698                 fast_mode = 0;
2699                 break;
2700         case 1152000 :
2701         case 4000000 :
2702                 fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA;
2703                 break;
2704
2705         }
2706         /* This causes an interrupt */
2707         register_bank(fir_base, 0);
2708         outb((inb(fir_base + IRCC_LCR_A) &  0xbf) | fast_mode, fir_base + IRCC_LCR_A);
2709 }
2710
2711 /*
2712  * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base)
2713  *
2714  *    Probe transceiver
2715  *
2716  */
2717
2718 static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base)
2719 {
2720         return 0;
2721 }
2722
2723
2724 module_init(smsc_ircc_init);
2725 module_exit(smsc_ircc_cleanup);