Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /***************************************************************** |
| 2 | * |
| 3 | * Filename: donauboe.c |
| 4 | * Version: 2.17 |
| 5 | * Description: Driver for the Toshiba OBOE (or type-O or 701) |
| 6 | * FIR Chipset, also supports the DONAUOBOE (type-DO |
| 7 | * or d01) FIR chipset which as far as I know is |
| 8 | * register compatible. |
| 9 | * Documentation: http://libxg.free.fr/irda/lib-irda.html |
| 10 | * Status: Experimental. |
| 11 | * Author: James McKenzie <james@fishsoup.dhs.org> |
| 12 | * Created at: Sat May 8 12:35:27 1999 |
| 13 | * Modified: Paul Bristow <paul.bristow@technologist.com> |
| 14 | * Modified: Mon Nov 11 19:10:05 1999 |
| 15 | * Modified: James McKenzie <james@fishsoup.dhs.org> |
| 16 | * Modified: Thu Mar 16 12:49:00 2000 (Substantial rewrite) |
| 17 | * Modified: Sat Apr 29 00:23:03 2000 (Added DONAUOBOE support) |
| 18 | * Modified: Wed May 24 23:45:02 2000 (Fixed chipio_t structure) |
| 19 | * Modified: 2.13 Christian Gennerat <christian.gennerat@polytechnique.org> |
| 20 | * Modified: 2.13 dim jan 07 21:57:39 2001 (tested with kernel 2.4 & irnet/ppp) |
| 21 | * Modified: 2.14 Christian Gennerat <christian.gennerat@polytechnique.org> |
| 22 | * Modified: 2.14 lun fev 05 17:55:59 2001 (adapted to patch-2.4.1-pre8-irda1) |
| 23 | * Modified: 2.15 Martin Lucina <mato@kotelna.sk> |
| 24 | * Modified: 2.15 Fri Jun 21 20:40:59 2002 (sync with 2.4.18, substantial fixes) |
| 25 | * Modified: 2.16 Martin Lucina <mato@kotelna.sk> |
| 26 | * Modified: 2.16 Sat Jun 22 18:54:29 2002 (fix freeregion, default to verbose) |
| 27 | * Modified: 2.17 Christian Gennerat <christian.gennerat@polytechnique.org> |
| 28 | * Modified: 2.17 jeu sep 12 08:50:20 2002 (save_flags();cli(); replaced by spinlocks) |
| 29 | * Modified: 2.18 Christian Gennerat <christian.gennerat@polytechnique.org> |
| 30 | * Modified: 2.18 ven jan 10 03:14:16 2003 Change probe default options |
| 31 | * |
| 32 | * Copyright (c) 1999 James McKenzie, All Rights Reserved. |
| 33 | * |
| 34 | * This program is free software; you can redistribute it and/or |
| 35 | * modify it under the terms of the GNU General Public License as |
| 36 | * published by the Free Software Foundation; either version 2 of |
| 37 | * the License, or (at your option) any later version. |
| 38 | * |
| 39 | * Neither James McKenzie nor Cambridge University admit liability nor |
| 40 | * provide warranty for any of this software. This material is |
| 41 | * provided "AS-IS" and at no charge. |
| 42 | * |
| 43 | * Applicable Models : Libretto 100/110CT and many more. |
| 44 | * Toshiba refers to this chip as the type-O IR port, |
| 45 | * or the type-DO IR port. |
| 46 | * |
| 47 | ********************************************************************/ |
| 48 | |
| 49 | /* Look at toshoboe.h (currently in include/net/irda) for details of */ |
| 50 | /* Where to get documentation on the chip */ |
| 51 | |
| 52 | |
| 53 | static char *rcsid = |
| 54 | "$Id: donauboe.c V2.18 ven jan 10 03:14:16 2003$"; |
| 55 | |
| 56 | /* See below for a description of the logic in this driver */ |
| 57 | |
| 58 | /* User servicable parts */ |
| 59 | /* USE_PROBE Create the code which probes the chip and does a few tests */ |
| 60 | /* do_probe module parameter Enable this code */ |
| 61 | /* Probe code is very useful for understanding how the hardware works */ |
| 62 | /* Use it with various combinations of TT_LEN, RX_LEN */ |
| 63 | /* Strongly recomended, disable if the probe fails on your machine */ |
| 64 | /* and send me <james@fishsoup.dhs.org> the output of dmesg */ |
| 65 | #define USE_PROBE 1 |
| 66 | #undef USE_PROBE |
| 67 | |
| 68 | /* Trace Transmit ring, interrupts, Receive ring or not ? */ |
| 69 | #define PROBE_VERBOSE 1 |
| 70 | |
| 71 | /* Debug option, examine sent and received raw data */ |
| 72 | /* Irdadump is better, but does not see all packets. enable it if you want. */ |
| 73 | #undef DUMP_PACKETS |
| 74 | |
| 75 | /* MIR mode has not been tested. Some behaviour is different */ |
| 76 | /* Seems to work against an Ericsson R520 for me. -Martin */ |
| 77 | #define USE_MIR |
| 78 | |
| 79 | /* Schedule back to back hardware transmits wherever possible, otherwise */ |
| 80 | /* we need an interrupt for every frame, unset if oboe works for a bit and */ |
| 81 | /* then hangs */ |
| 82 | #define OPTIMIZE_TX |
| 83 | |
| 84 | /* Set the number of slots in the rings */ |
| 85 | /* If you get rx/tx fifo overflows at high bitrates, you can try increasing */ |
| 86 | /* these */ |
| 87 | |
| 88 | #define RING_SIZE (OBOE_RING_SIZE_RX8 | OBOE_RING_SIZE_TX8) |
| 89 | #define TX_SLOTS 8 |
| 90 | #define RX_SLOTS 8 |
| 91 | |
| 92 | |
| 93 | /* Less user servicable parts below here */ |
| 94 | |
| 95 | /* Test, Transmit and receive buffer sizes, adjust at your peril */ |
| 96 | /* remarks: nfs usually needs 1k blocks */ |
| 97 | /* remarks: in SIR mode, CRC is received, -> RX_LEN=TX_LEN+2 */ |
| 98 | /* remarks: test accepts large blocks. Standard is 0x80 */ |
| 99 | /* When TT_LEN > RX_LEN (SIR mode) data is stored in successive slots. */ |
| 100 | /* When 3 or more slots are needed for each test packet, */ |
| 101 | /* data received in the first slots is overwritten, even */ |
| 102 | /* if OBOE_CTL_RX_HW_OWNS is not set, without any error! */ |
| 103 | #define TT_LEN 0x80 |
| 104 | #define TX_LEN 0xc00 |
| 105 | #define RX_LEN 0xc04 |
| 106 | /* Real transmitted length (SIR mode) is about 14+(2%*TX_LEN) more */ |
| 107 | /* long than user-defined length (see async_wrap_skb) and is less then 4K */ |
| 108 | /* Real received length is (max RX_LEN) differs from user-defined */ |
| 109 | /* length only b the CRC (2 or 4 bytes) */ |
| 110 | #define BUF_SAFETY 0x7a |
| 111 | #define RX_BUF_SZ (RX_LEN) |
| 112 | #define TX_BUF_SZ (TX_LEN+BUF_SAFETY) |
| 113 | |
| 114 | |
| 115 | /* Logic of the netdev part of this driver */ |
| 116 | |
| 117 | /* The RX ring is filled with buffers, when a packet arrives */ |
| 118 | /* it is DMA'd into the buffer which is marked used and RxDone called */ |
| 119 | /* RxDone forms an skb (and checks the CRC if in SIR mode) and ships */ |
| 120 | /* the packet off upstairs */ |
| 121 | |
| 122 | /* The transmitter on the oboe chip can work in one of two modes */ |
| 123 | /* for each ring->tx[] the transmitter can either */ |
| 124 | /* a) transmit the packet, leave the trasmitter enabled and proceed to */ |
| 125 | /* the next ring */ |
| 126 | /* OR */ |
| 127 | /* b) transmit the packet, switch off the transmitter and issue TxDone */ |
| 128 | |
| 129 | /* All packets are entered into the ring in mode b), if the ring was */ |
| 130 | /* empty the transmitter is started. */ |
| 131 | |
| 132 | /* If OPTIMIZE_TX is defined then in TxDone if the ring contains */ |
| 133 | /* more than one packet, all but the last are set to mode a) [HOWEVER */ |
| 134 | /* the hardware may not notice this, this is why we start in mode b) ] */ |
| 135 | /* then restart the transmitter */ |
| 136 | |
| 137 | /* If OPTIMIZE_TX is not defined then we just restart the transmitter */ |
| 138 | /* if the ring isn't empty */ |
| 139 | |
| 140 | /* Speed changes are delayed until the TxRing is empty */ |
| 141 | /* mtt is handled by generating packets with bad CRCs, before the data */ |
| 142 | |
| 143 | /* TODO: */ |
| 144 | /* check the mtt works ok */ |
| 145 | /* finish the watchdog */ |
| 146 | |
| 147 | /* No user servicable parts below here */ |
| 148 | |
| 149 | #include <linux/module.h> |
| 150 | |
| 151 | #include <linux/kernel.h> |
| 152 | #include <linux/types.h> |
| 153 | #include <linux/skbuff.h> |
| 154 | #include <linux/netdevice.h> |
| 155 | #include <linux/ioport.h> |
| 156 | #include <linux/delay.h> |
| 157 | #include <linux/slab.h> |
| 158 | #include <linux/init.h> |
| 159 | #include <linux/pci.h> |
| 160 | #include <linux/rtnetlink.h> |
| 161 | |
| 162 | #include <asm/system.h> |
| 163 | #include <asm/io.h> |
| 164 | |
| 165 | #include <net/irda/wrapper.h> |
| 166 | #include <net/irda/irda.h> |
| 167 | //#include <net/irda/irmod.h> |
| 168 | //#include <net/irda/irlap_frame.h> |
| 169 | #include <net/irda/irda_device.h> |
| 170 | #include <net/irda/crc.h> |
| 171 | |
| 172 | #include "donauboe.h" |
| 173 | |
| 174 | #define INB(port) inb_p(port) |
| 175 | #define OUTB(val,port) outb_p(val,port) |
| 176 | #define OUTBP(val,port) outb_p(val,port) |
| 177 | |
| 178 | #define PROMPT OUTB(OBOE_PROMPT_BIT,OBOE_PROMPT); |
| 179 | |
| 180 | #if PROBE_VERBOSE |
| 181 | #define PROBE_DEBUG(args...) (printk (args)) |
| 182 | #else |
| 183 | #define PROBE_DEBUG(args...) ; |
| 184 | #endif |
| 185 | |
| 186 | /* Set the DMA to be byte at a time */ |
| 187 | #define CONFIG0H_DMA_OFF OBOE_CONFIG0H_RCVANY |
| 188 | #define CONFIG0H_DMA_ON_NORX CONFIG0H_DMA_OFF| OBOE_CONFIG0H_ENDMAC |
| 189 | #define CONFIG0H_DMA_ON CONFIG0H_DMA_ON_NORX | OBOE_CONFIG0H_ENRX |
| 190 | |
| 191 | static struct pci_device_id toshoboe_pci_tbl[] = { |
| 192 | { PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_FIR701, PCI_ANY_ID, PCI_ANY_ID, }, |
| 193 | { PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_FIRD01, PCI_ANY_ID, PCI_ANY_ID, }, |
| 194 | { } /* Terminating entry */ |
| 195 | }; |
| 196 | MODULE_DEVICE_TABLE(pci, toshoboe_pci_tbl); |
| 197 | |
| 198 | #define DRIVER_NAME "toshoboe" |
| 199 | static char *driver_name = DRIVER_NAME; |
| 200 | |
| 201 | static int max_baud = 4000000; |
| 202 | #ifdef USE_PROBE |
| 203 | static int do_probe = 0; |
| 204 | #endif |
| 205 | |
| 206 | |
| 207 | /**********************************************************************/ |
| 208 | static int |
| 209 | toshoboe_checkfcs (unsigned char *buf, int len) |
| 210 | { |
| 211 | int i; |
| 212 | union |
| 213 | { |
| 214 | __u16 value; |
| 215 | __u8 bytes[2]; |
| 216 | } |
| 217 | fcs; |
| 218 | |
| 219 | fcs.value = INIT_FCS; |
| 220 | |
| 221 | for (i = 0; i < len; ++i) |
| 222 | fcs.value = irda_fcs (fcs.value, *(buf++)); |
| 223 | |
| 224 | return (fcs.value == GOOD_FCS); |
| 225 | } |
| 226 | |
| 227 | /***********************************************************************/ |
| 228 | /* Generic chip handling code */ |
| 229 | #ifdef DUMP_PACKETS |
| 230 | static unsigned char dump[50]; |
| 231 | static void |
| 232 | _dumpbufs (unsigned char *data, int len, char tete) |
| 233 | { |
| 234 | int i,j; |
| 235 | char head=tete; |
| 236 | for (i=0;i<len;i+=16) { |
| 237 | for (j=0;j<16 && i+j<len;j++) { sprintf(&dump[3*j],"%02x.",data[i+j]); } |
| 238 | dump [3*j]=0; |
| 239 | IRDA_DEBUG (2, "%c%s\n",head , dump); |
| 240 | head='+'; |
| 241 | } |
| 242 | } |
| 243 | #endif |
| 244 | |
| 245 | #ifdef USE_PROBE |
| 246 | /* Dump the registers */ |
| 247 | static void |
| 248 | toshoboe_dumpregs (struct toshoboe_cb *self) |
| 249 | { |
| 250 | __u32 ringbase; |
| 251 | |
| 252 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 253 | |
| 254 | ringbase = INB (OBOE_RING_BASE0) << 10; |
| 255 | ringbase |= INB (OBOE_RING_BASE1) << 18; |
| 256 | ringbase |= INB (OBOE_RING_BASE2) << 26; |
| 257 | |
| 258 | printk (KERN_ERR DRIVER_NAME ": Register dump:\n"); |
| 259 | printk (KERN_ERR "Interrupts: Tx:%d Rx:%d TxUnder:%d RxOver:%d Sip:%d\n", |
| 260 | self->int_tx, self->int_rx, self->int_txunder, self->int_rxover, |
| 261 | self->int_sip); |
| 262 | printk (KERN_ERR "RX %02x TX %02x RingBase %08x\n", |
| 263 | INB (OBOE_RXSLOT), INB (OBOE_TXSLOT), ringbase); |
| 264 | printk (KERN_ERR "RING_SIZE %02x IER %02x ISR %02x\n", |
| 265 | INB (OBOE_RING_SIZE), INB (OBOE_IER), INB (OBOE_ISR)); |
| 266 | printk (KERN_ERR "CONFIG1 %02x STATUS %02x\n", |
| 267 | INB (OBOE_CONFIG1), INB (OBOE_STATUS)); |
| 268 | printk (KERN_ERR "CONFIG0 %02x%02x ENABLE %02x%02x\n", |
| 269 | INB (OBOE_CONFIG0H), INB (OBOE_CONFIG0L), |
| 270 | INB (OBOE_ENABLEH), INB (OBOE_ENABLEL)); |
| 271 | printk (KERN_ERR "NEW_PCONFIG %02x%02x CURR_PCONFIG %02x%02x\n", |
| 272 | INB (OBOE_NEW_PCONFIGH), INB (OBOE_NEW_PCONFIGL), |
| 273 | INB (OBOE_CURR_PCONFIGH), INB (OBOE_CURR_PCONFIGL)); |
| 274 | printk (KERN_ERR "MAXLEN %02x%02x RXCOUNT %02x%02x\n", |
| 275 | INB (OBOE_MAXLENH), INB (OBOE_MAXLENL), |
| 276 | INB (OBOE_RXCOUNTL), INB (OBOE_RXCOUNTH)); |
| 277 | |
| 278 | if (self->ring) |
| 279 | { |
| 280 | int i; |
| 281 | ringbase = virt_to_bus (self->ring); |
| 282 | printk (KERN_ERR "Ring at %08x:\n", ringbase); |
| 283 | printk (KERN_ERR "RX:"); |
| 284 | for (i = 0; i < RX_SLOTS; ++i) |
| 285 | printk (" (%d,%02x)",self->ring->rx[i].len,self->ring->rx[i].control); |
| 286 | printk ("\n"); |
| 287 | printk (KERN_ERR "TX:"); |
| 288 | for (i = 0; i < RX_SLOTS; ++i) |
| 289 | printk (" (%d,%02x)",self->ring->tx[i].len,self->ring->tx[i].control); |
| 290 | printk ("\n"); |
| 291 | } |
| 292 | } |
| 293 | #endif |
| 294 | |
| 295 | /*Don't let the chip look at memory */ |
| 296 | static void |
| 297 | toshoboe_disablebm (struct toshoboe_cb *self) |
| 298 | { |
| 299 | __u8 command; |
| 300 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 301 | |
| 302 | pci_read_config_byte (self->pdev, PCI_COMMAND, &command); |
| 303 | command &= ~PCI_COMMAND_MASTER; |
| 304 | pci_write_config_byte (self->pdev, PCI_COMMAND, command); |
| 305 | |
| 306 | } |
| 307 | |
| 308 | /* Shutdown the chip and point the taskfile reg somewhere else */ |
| 309 | static void |
| 310 | toshoboe_stopchip (struct toshoboe_cb *self) |
| 311 | { |
| 312 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 313 | |
| 314 | /*Disable interrupts */ |
| 315 | OUTB (0x0, OBOE_IER); |
| 316 | /*Disable DMA, Disable Rx, Disable Tx */ |
| 317 | OUTB (CONFIG0H_DMA_OFF, OBOE_CONFIG0H); |
| 318 | /*Disable SIR MIR FIR, Tx and Rx */ |
| 319 | OUTB (0x00, OBOE_ENABLEH); |
| 320 | /*Point the ring somewhere safe */ |
| 321 | OUTB (0x3f, OBOE_RING_BASE2); |
| 322 | OUTB (0xff, OBOE_RING_BASE1); |
| 323 | OUTB (0xff, OBOE_RING_BASE0); |
| 324 | |
| 325 | OUTB (RX_LEN >> 8, OBOE_MAXLENH); |
| 326 | OUTB (RX_LEN & 0xff, OBOE_MAXLENL); |
| 327 | |
| 328 | /*Acknoledge any pending interrupts */ |
| 329 | OUTB (0xff, OBOE_ISR); |
| 330 | |
| 331 | /*Why */ |
| 332 | OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH); |
| 333 | |
| 334 | /*switch it off */ |
| 335 | OUTB (OBOE_CONFIG1_OFF, OBOE_CONFIG1); |
| 336 | |
| 337 | toshoboe_disablebm (self); |
| 338 | } |
| 339 | |
| 340 | /* Transmitter initialization */ |
| 341 | static void |
| 342 | toshoboe_start_DMA (struct toshoboe_cb *self, int opts) |
| 343 | { |
| 344 | OUTB (0x0, OBOE_ENABLEH); |
| 345 | OUTB (CONFIG0H_DMA_ON | opts, OBOE_CONFIG0H); |
| 346 | OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH); |
| 347 | PROMPT; |
| 348 | } |
| 349 | |
| 350 | /*Set the baud rate */ |
| 351 | static void |
| 352 | toshoboe_setbaud (struct toshoboe_cb *self) |
| 353 | { |
| 354 | __u16 pconfig = 0; |
| 355 | __u8 config0l = 0; |
| 356 | |
| 357 | IRDA_DEBUG (2, "%s(%d/%d)\n", __FUNCTION__, self->speed, self->io.speed); |
| 358 | |
| 359 | switch (self->speed) |
| 360 | { |
| 361 | case 2400: |
| 362 | case 4800: |
| 363 | case 9600: |
| 364 | case 19200: |
| 365 | case 38400: |
| 366 | case 57600: |
| 367 | case 115200: |
| 368 | #ifdef USE_MIR |
| 369 | case 1152000: |
| 370 | #endif |
| 371 | case 4000000: |
| 372 | break; |
| 373 | default: |
| 374 | |
| 375 | printk (KERN_ERR DRIVER_NAME ": switch to unsupported baudrate %d\n", |
| 376 | self->speed); |
| 377 | return; |
| 378 | } |
| 379 | |
| 380 | switch (self->speed) |
| 381 | { |
| 382 | /* For SIR the preamble is done by adding XBOFs */ |
| 383 | /* to the packet */ |
| 384 | /* set to filtered SIR mode, filter looks for BOF and EOF */ |
| 385 | case 2400: |
| 386 | pconfig |= 47 << OBOE_PCONFIG_BAUDSHIFT; |
| 387 | pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT; |
| 388 | break; |
| 389 | case 4800: |
| 390 | pconfig |= 23 << OBOE_PCONFIG_BAUDSHIFT; |
| 391 | pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT; |
| 392 | break; |
| 393 | case 9600: |
| 394 | pconfig |= 11 << OBOE_PCONFIG_BAUDSHIFT; |
| 395 | pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT; |
| 396 | break; |
| 397 | case 19200: |
| 398 | pconfig |= 5 << OBOE_PCONFIG_BAUDSHIFT; |
| 399 | pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT; |
| 400 | break; |
| 401 | case 38400: |
| 402 | pconfig |= 2 << OBOE_PCONFIG_BAUDSHIFT; |
| 403 | pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT; |
| 404 | break; |
| 405 | case 57600: |
| 406 | pconfig |= 1 << OBOE_PCONFIG_BAUDSHIFT; |
| 407 | pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT; |
| 408 | break; |
| 409 | case 115200: |
| 410 | pconfig |= 0 << OBOE_PCONFIG_BAUDSHIFT; |
| 411 | pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT; |
| 412 | break; |
| 413 | default: |
| 414 | /*Set to packet based reception */ |
| 415 | OUTB (RX_LEN >> 8, OBOE_MAXLENH); |
| 416 | OUTB (RX_LEN & 0xff, OBOE_MAXLENL); |
| 417 | break; |
| 418 | } |
| 419 | |
| 420 | switch (self->speed) |
| 421 | { |
| 422 | case 2400: |
| 423 | case 4800: |
| 424 | case 9600: |
| 425 | case 19200: |
| 426 | case 38400: |
| 427 | case 57600: |
| 428 | case 115200: |
| 429 | config0l = OBOE_CONFIG0L_ENSIR; |
| 430 | if (self->async) |
| 431 | { |
| 432 | /*Set to character based reception */ |
| 433 | /*System will lock if MAXLEN=0 */ |
| 434 | /*so have to be careful */ |
| 435 | OUTB (0x01, OBOE_MAXLENH); |
| 436 | OUTB (0x01, OBOE_MAXLENL); |
| 437 | OUTB (0x00, OBOE_MAXLENH); |
| 438 | } |
| 439 | else |
| 440 | { |
| 441 | /*Set to packet based reception */ |
| 442 | config0l |= OBOE_CONFIG0L_ENSIRF; |
| 443 | OUTB (RX_LEN >> 8, OBOE_MAXLENH); |
| 444 | OUTB (RX_LEN & 0xff, OBOE_MAXLENL); |
| 445 | } |
| 446 | break; |
| 447 | |
| 448 | #ifdef USE_MIR |
| 449 | /* MIR mode */ |
| 450 | /* Set for 16 bit CRC and enable MIR */ |
| 451 | /* Preamble now handled by the chip */ |
| 452 | case 1152000: |
| 453 | pconfig |= 0 << OBOE_PCONFIG_BAUDSHIFT; |
| 454 | pconfig |= 8 << OBOE_PCONFIG_WIDTHSHIFT; |
| 455 | pconfig |= 1 << OBOE_PCONFIG_PREAMBLESHIFT; |
| 456 | config0l = OBOE_CONFIG0L_CRC16 | OBOE_CONFIG0L_ENMIR; |
| 457 | break; |
| 458 | #endif |
| 459 | /* FIR mode */ |
| 460 | /* Set for 32 bit CRC and enable FIR */ |
| 461 | /* Preamble handled by the chip */ |
| 462 | case 4000000: |
| 463 | pconfig |= 0 << OBOE_PCONFIG_BAUDSHIFT; |
| 464 | /* Documentation says 14, but toshiba use 15 in their drivers */ |
| 465 | pconfig |= 15 << OBOE_PCONFIG_PREAMBLESHIFT; |
| 466 | config0l = OBOE_CONFIG0L_ENFIR; |
| 467 | break; |
| 468 | } |
| 469 | |
| 470 | /* Copy into new PHY config buffer */ |
| 471 | OUTBP (pconfig >> 8, OBOE_NEW_PCONFIGH); |
| 472 | OUTB (pconfig & 0xff, OBOE_NEW_PCONFIGL); |
| 473 | OUTB (config0l, OBOE_CONFIG0L); |
| 474 | |
| 475 | /* Now make OBOE copy from new PHY to current PHY */ |
| 476 | OUTB (0x0, OBOE_ENABLEH); |
| 477 | OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH); |
| 478 | PROMPT; |
| 479 | |
| 480 | /* speed change executed */ |
| 481 | self->new_speed = 0; |
| 482 | self->io.speed = self->speed; |
| 483 | } |
| 484 | |
| 485 | /*Let the chip look at memory */ |
| 486 | static void |
| 487 | toshoboe_enablebm (struct toshoboe_cb *self) |
| 488 | { |
| 489 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 490 | pci_set_master (self->pdev); |
| 491 | } |
| 492 | |
| 493 | /*setup the ring */ |
| 494 | static void |
| 495 | toshoboe_initring (struct toshoboe_cb *self) |
| 496 | { |
| 497 | int i; |
| 498 | |
| 499 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 500 | |
| 501 | for (i = 0; i < TX_SLOTS; ++i) |
| 502 | { |
| 503 | self->ring->tx[i].len = 0; |
| 504 | self->ring->tx[i].control = 0x00; |
| 505 | self->ring->tx[i].address = virt_to_bus (self->tx_bufs[i]); |
| 506 | } |
| 507 | |
| 508 | for (i = 0; i < RX_SLOTS; ++i) |
| 509 | { |
| 510 | self->ring->rx[i].len = RX_LEN; |
| 511 | self->ring->rx[i].len = 0; |
| 512 | self->ring->rx[i].address = virt_to_bus (self->rx_bufs[i]); |
| 513 | self->ring->rx[i].control = OBOE_CTL_RX_HW_OWNS; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | static void |
| 518 | toshoboe_resetptrs (struct toshoboe_cb *self) |
| 519 | { |
| 520 | /* Can reset pointers by twidling DMA */ |
| 521 | OUTB (0x0, OBOE_ENABLEH); |
| 522 | OUTBP (CONFIG0H_DMA_OFF, OBOE_CONFIG0H); |
| 523 | OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH); |
| 524 | |
| 525 | self->rxs = inb_p (OBOE_RXSLOT) & OBOE_SLOT_MASK; |
| 526 | self->txs = inb_p (OBOE_TXSLOT) & OBOE_SLOT_MASK; |
| 527 | } |
| 528 | |
| 529 | /* Called in locked state */ |
| 530 | static void |
| 531 | toshoboe_initptrs (struct toshoboe_cb *self) |
| 532 | { |
| 533 | |
| 534 | /* spin_lock_irqsave(self->spinlock, flags); */ |
| 535 | /* save_flags (flags); */ |
| 536 | |
| 537 | /* Can reset pointers by twidling DMA */ |
| 538 | toshoboe_resetptrs (self); |
| 539 | |
| 540 | OUTB (0x0, OBOE_ENABLEH); |
| 541 | OUTB (CONFIG0H_DMA_ON, OBOE_CONFIG0H); |
| 542 | OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH); |
| 543 | |
| 544 | self->txpending = 0; |
| 545 | |
| 546 | /* spin_unlock_irqrestore(self->spinlock, flags); */ |
| 547 | /* restore_flags (flags); */ |
| 548 | } |
| 549 | |
| 550 | /* Wake the chip up and get it looking at the rings */ |
| 551 | /* Called in locked state */ |
| 552 | static void |
| 553 | toshoboe_startchip (struct toshoboe_cb *self) |
| 554 | { |
| 555 | __u32 physaddr; |
| 556 | |
| 557 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 558 | |
| 559 | toshoboe_initring (self); |
| 560 | toshoboe_enablebm (self); |
| 561 | OUTBP (OBOE_CONFIG1_RESET, OBOE_CONFIG1); |
| 562 | OUTBP (OBOE_CONFIG1_ON, OBOE_CONFIG1); |
| 563 | |
| 564 | /* Stop the clocks */ |
| 565 | OUTB (0, OBOE_ENABLEH); |
| 566 | |
| 567 | /*Set size of rings */ |
| 568 | OUTB (RING_SIZE, OBOE_RING_SIZE); |
| 569 | |
| 570 | /*Acknoledge any pending interrupts */ |
| 571 | OUTB (0xff, OBOE_ISR); |
| 572 | |
| 573 | /*Enable ints */ |
| 574 | OUTB (OBOE_INT_TXDONE | OBOE_INT_RXDONE | |
| 575 | OBOE_INT_TXUNDER | OBOE_INT_RXOVER | OBOE_INT_SIP , OBOE_IER); |
| 576 | |
| 577 | /*Acknoledge any pending interrupts */ |
| 578 | OUTB (0xff, OBOE_ISR); |
| 579 | |
| 580 | /*Set the maximum packet length to 0xfff (4095) */ |
| 581 | OUTB (RX_LEN >> 8, OBOE_MAXLENH); |
| 582 | OUTB (RX_LEN & 0xff, OBOE_MAXLENL); |
| 583 | |
| 584 | /*Shutdown DMA */ |
| 585 | OUTB (CONFIG0H_DMA_OFF, OBOE_CONFIG0H); |
| 586 | |
| 587 | /*Find out where the rings live */ |
| 588 | physaddr = virt_to_bus (self->ring); |
| 589 | |
| 590 | IRDA_ASSERT ((physaddr & 0x3ff) == 0, |
| 591 | printk (KERN_ERR DRIVER_NAME "ring not correctly aligned\n"); |
| 592 | return;); |
| 593 | |
| 594 | OUTB ((physaddr >> 10) & 0xff, OBOE_RING_BASE0); |
| 595 | OUTB ((physaddr >> 18) & 0xff, OBOE_RING_BASE1); |
| 596 | OUTB ((physaddr >> 26) & 0x3f, OBOE_RING_BASE2); |
| 597 | |
| 598 | /*Enable DMA controler in byte mode and RX */ |
| 599 | OUTB (CONFIG0H_DMA_ON, OBOE_CONFIG0H); |
| 600 | |
| 601 | /* Start up the clocks */ |
| 602 | OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH); |
| 603 | |
| 604 | /*set to sensible speed */ |
| 605 | self->speed = 9600; |
| 606 | toshoboe_setbaud (self); |
| 607 | toshoboe_initptrs (self); |
| 608 | } |
| 609 | |
| 610 | static void |
| 611 | toshoboe_isntstuck (struct toshoboe_cb *self) |
| 612 | { |
| 613 | } |
| 614 | |
| 615 | static void |
| 616 | toshoboe_checkstuck (struct toshoboe_cb *self) |
| 617 | { |
| 618 | unsigned long flags; |
| 619 | |
| 620 | if (0) |
| 621 | { |
| 622 | spin_lock_irqsave(&self->spinlock, flags); |
| 623 | |
| 624 | /* This will reset the chip completely */ |
| 625 | printk (KERN_ERR DRIVER_NAME ": Resetting chip\n"); |
| 626 | |
| 627 | toshoboe_stopchip (self); |
| 628 | toshoboe_startchip (self); |
| 629 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | /*Generate packet of about mtt us long */ |
| 634 | static int |
| 635 | toshoboe_makemttpacket (struct toshoboe_cb *self, void *buf, int mtt) |
| 636 | { |
| 637 | int xbofs; |
| 638 | |
| 639 | xbofs = ((int) (mtt/100)) * (int) (self->speed); |
| 640 | xbofs=xbofs/80000; /*Eight bits per byte, and mtt is in us*/ |
| 641 | xbofs++; |
| 642 | |
| 643 | IRDA_DEBUG (2, DRIVER_NAME |
| 644 | ": generated mtt of %d bytes for %d us at %d baud\n" |
| 645 | , xbofs,mtt,self->speed); |
| 646 | |
| 647 | if (xbofs > TX_LEN) |
| 648 | { |
| 649 | printk (KERN_ERR DRIVER_NAME ": wanted %d bytes MTT but TX_LEN is %d\n", |
| 650 | xbofs, TX_LEN); |
| 651 | xbofs = TX_LEN; |
| 652 | } |
| 653 | |
| 654 | /*xbofs will do for SIR, MIR and FIR,SIR mode doesn't generate a checksum anyway */ |
| 655 | memset (buf, XBOF, xbofs); |
| 656 | |
| 657 | return xbofs; |
| 658 | } |
| 659 | |
| 660 | static int toshoboe_invalid_dev(int irq) |
| 661 | { |
| 662 | printk (KERN_WARNING DRIVER_NAME ": irq %d for unknown device.\n", irq); |
| 663 | return 1; |
| 664 | } |
| 665 | |
| 666 | #ifdef USE_PROBE |
| 667 | /***********************************************************************/ |
| 668 | /* Probe code */ |
| 669 | |
| 670 | static void |
| 671 | toshoboe_dumptx (struct toshoboe_cb *self) |
| 672 | { |
| 673 | int i; |
| 674 | PROBE_DEBUG(KERN_WARNING "TX:"); |
| 675 | for (i = 0; i < RX_SLOTS; ++i) |
| 676 | PROBE_DEBUG(" (%d,%02x)",self->ring->tx[i].len,self->ring->tx[i].control); |
| 677 | PROBE_DEBUG(" [%d]\n",self->speed); |
| 678 | } |
| 679 | |
| 680 | static void |
| 681 | toshoboe_dumprx (struct toshoboe_cb *self, int score) |
| 682 | { |
| 683 | int i; |
| 684 | PROBE_DEBUG(" %d\nRX:",score); |
| 685 | for (i = 0; i < RX_SLOTS; ++i) |
| 686 | PROBE_DEBUG(" (%d,%02x)",self->ring->rx[i].len,self->ring->rx[i].control); |
| 687 | PROBE_DEBUG("\n"); |
| 688 | } |
| 689 | |
| 690 | static inline int |
| 691 | stuff_byte (__u8 byte, __u8 * buf) |
| 692 | { |
| 693 | switch (byte) |
| 694 | { |
| 695 | case BOF: /* FALLTHROUGH */ |
| 696 | case EOF: /* FALLTHROUGH */ |
| 697 | case CE: |
| 698 | /* Insert transparently coded */ |
| 699 | buf[0] = CE; /* Send link escape */ |
| 700 | buf[1] = byte ^ IRDA_TRANS; /* Complement bit 5 */ |
| 701 | return 2; |
| 702 | /* break; */ |
| 703 | default: |
| 704 | /* Non-special value, no transparency required */ |
| 705 | buf[0] = byte; |
| 706 | return 1; |
| 707 | /* break; */ |
| 708 | } |
| 709 | } |
| 710 | |
| 711 | static irqreturn_t |
| 712 | toshoboe_probeinterrupt (int irq, void *dev_id, struct pt_regs *regs) |
| 713 | { |
| 714 | struct toshoboe_cb *self = (struct toshoboe_cb *) dev_id; |
| 715 | __u8 irqstat; |
| 716 | |
| 717 | if (self == NULL && toshoboe_invalid_dev(irq)) |
| 718 | return IRQ_NONE; |
| 719 | |
| 720 | irqstat = INB (OBOE_ISR); |
| 721 | |
| 722 | /* was it us */ |
| 723 | if (!(irqstat & OBOE_INT_MASK)) |
| 724 | return IRQ_NONE; |
| 725 | |
| 726 | /* Ack all the interrupts */ |
| 727 | OUTB (irqstat, OBOE_ISR); |
| 728 | |
| 729 | if (irqstat & OBOE_INT_TXDONE) |
| 730 | { |
| 731 | int txp; |
| 732 | |
| 733 | self->int_tx++; |
| 734 | PROBE_DEBUG("T"); |
| 735 | |
| 736 | txp = INB (OBOE_TXSLOT) & OBOE_SLOT_MASK; |
| 737 | if (self->ring->tx[txp].control & OBOE_CTL_TX_HW_OWNS) |
| 738 | { |
| 739 | self->int_tx+=100; |
| 740 | PROBE_DEBUG("S"); |
| 741 | toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP); |
| 742 | } |
| 743 | } |
| 744 | |
| 745 | if (irqstat & OBOE_INT_RXDONE) { |
| 746 | self->int_rx++; |
| 747 | PROBE_DEBUG("R"); } |
| 748 | if (irqstat & OBOE_INT_TXUNDER) { |
| 749 | self->int_txunder++; |
| 750 | PROBE_DEBUG("U"); } |
| 751 | if (irqstat & OBOE_INT_RXOVER) { |
| 752 | self->int_rxover++; |
| 753 | PROBE_DEBUG("O"); } |
| 754 | if (irqstat & OBOE_INT_SIP) { |
| 755 | self->int_sip++; |
| 756 | PROBE_DEBUG("I"); } |
| 757 | return IRQ_HANDLED; |
| 758 | } |
| 759 | |
| 760 | static int |
| 761 | toshoboe_maketestpacket (unsigned char *buf, int badcrc, int fir) |
| 762 | { |
| 763 | int i; |
| 764 | int len = 0; |
| 765 | union |
| 766 | { |
| 767 | __u16 value; |
| 768 | __u8 bytes[2]; |
| 769 | } |
| 770 | fcs; |
| 771 | |
| 772 | if (fir) |
| 773 | { |
| 774 | memset (buf, 0, TT_LEN); |
| 775 | return (TT_LEN); |
| 776 | } |
| 777 | |
| 778 | fcs.value = INIT_FCS; |
| 779 | |
| 780 | memset (buf, XBOF, 10); |
| 781 | len += 10; |
| 782 | buf[len++] = BOF; |
| 783 | |
| 784 | for (i = 0; i < TT_LEN; ++i) |
| 785 | { |
| 786 | len += stuff_byte (i, buf + len); |
| 787 | fcs.value = irda_fcs (fcs.value, i); |
| 788 | } |
| 789 | |
| 790 | len += stuff_byte (fcs.bytes[0] ^ badcrc, buf + len); |
| 791 | len += stuff_byte (fcs.bytes[1] ^ badcrc, buf + len); |
| 792 | buf[len++] = EOF; |
| 793 | len++; |
| 794 | return len; |
| 795 | } |
| 796 | |
| 797 | static int |
| 798 | toshoboe_probefail (struct toshoboe_cb *self, char *msg) |
| 799 | { |
| 800 | printk (KERN_ERR DRIVER_NAME "probe(%d) failed %s\n",self-> speed, msg); |
| 801 | toshoboe_dumpregs (self); |
| 802 | toshoboe_stopchip (self); |
| 803 | free_irq (self->io.irq, (void *) self); |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | static int |
| 808 | toshoboe_numvalidrcvs (struct toshoboe_cb *self) |
| 809 | { |
| 810 | int i, ret = 0; |
| 811 | for (i = 0; i < RX_SLOTS; ++i) |
| 812 | if ((self->ring->rx[i].control & 0xe0) == 0) |
| 813 | ret++; |
| 814 | |
| 815 | return ret; |
| 816 | } |
| 817 | |
| 818 | static int |
| 819 | toshoboe_numrcvs (struct toshoboe_cb *self) |
| 820 | { |
| 821 | int i, ret = 0; |
| 822 | for (i = 0; i < RX_SLOTS; ++i) |
| 823 | if (!(self->ring->rx[i].control & OBOE_CTL_RX_HW_OWNS)) |
| 824 | ret++; |
| 825 | |
| 826 | return ret; |
| 827 | } |
| 828 | |
| 829 | static int |
| 830 | toshoboe_probe (struct toshoboe_cb *self) |
| 831 | { |
| 832 | int i, j, n; |
| 833 | #ifdef USE_MIR |
| 834 | int bauds[] = { 9600, 115200, 4000000, 1152000 }; |
| 835 | #else |
| 836 | int bauds[] = { 9600, 115200, 4000000 }; |
| 837 | #endif |
| 838 | unsigned long flags; |
| 839 | |
| 840 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 841 | |
| 842 | if (request_irq (self->io.irq, toshoboe_probeinterrupt, |
| 843 | self->io.irqflags, "toshoboe", (void *) self)) |
| 844 | { |
| 845 | printk (KERN_ERR DRIVER_NAME ": probe failed to allocate irq %d\n", |
| 846 | self->io.irq); |
| 847 | return 0; |
| 848 | } |
| 849 | |
| 850 | /* test 1: SIR filter and back to back */ |
| 851 | |
| 852 | for (j = 0; j < (sizeof (bauds) / sizeof (int)); ++j) |
| 853 | { |
| 854 | int fir = (j > 1); |
| 855 | toshoboe_stopchip (self); |
| 856 | |
| 857 | |
| 858 | spin_lock_irqsave(&self->spinlock, flags); |
| 859 | /*Address is already setup */ |
| 860 | toshoboe_startchip (self); |
| 861 | self->int_rx = self->int_tx = 0; |
| 862 | self->speed = bauds[j]; |
| 863 | toshoboe_setbaud (self); |
| 864 | toshoboe_initptrs (self); |
| 865 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 866 | |
| 867 | self->ring->tx[self->txs].control = |
| 868 | /* (FIR only) OBOE_CTL_TX_SIP needed for switching to next slot */ |
| 869 | /* MIR: all received data is stored in one slot */ |
| 870 | (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX |
| 871 | : OBOE_CTL_TX_HW_OWNS ; |
| 872 | self->ring->tx[self->txs].len = |
| 873 | toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir); |
| 874 | self->txs++; |
| 875 | self->txs %= TX_SLOTS; |
| 876 | |
| 877 | self->ring->tx[self->txs].control = |
| 878 | (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_SIP |
| 879 | : OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX ; |
| 880 | self->ring->tx[self->txs].len = |
| 881 | toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir); |
| 882 | self->txs++; |
| 883 | self->txs %= TX_SLOTS; |
| 884 | |
| 885 | self->ring->tx[self->txs].control = |
| 886 | (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX |
| 887 | : OBOE_CTL_TX_HW_OWNS ; |
| 888 | self->ring->tx[self->txs].len = |
| 889 | toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir); |
| 890 | self->txs++; |
| 891 | self->txs %= TX_SLOTS; |
| 892 | |
| 893 | self->ring->tx[self->txs].control = |
| 894 | (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX |
| 895 | | OBOE_CTL_TX_SIP | OBOE_CTL_TX_BAD_CRC |
| 896 | : OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX ; |
| 897 | self->ring->tx[self->txs].len = |
| 898 | toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir); |
| 899 | self->txs++; |
| 900 | self->txs %= TX_SLOTS; |
| 901 | |
| 902 | toshoboe_dumptx (self); |
| 903 | /* Turn on TX and RX and loopback */ |
| 904 | toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP); |
| 905 | |
| 906 | i = 0; |
| 907 | n = fir ? 1 : 4; |
| 908 | while (toshoboe_numvalidrcvs (self) != n) |
| 909 | { |
| 910 | if (i > 4800) |
| 911 | return toshoboe_probefail (self, "filter test"); |
| 912 | udelay ((9600*(TT_LEN+16))/self->speed); |
| 913 | i++; |
| 914 | } |
| 915 | |
| 916 | n = fir ? 203 : 102; |
| 917 | while ((toshoboe_numrcvs(self) != self->int_rx) || (self->int_tx != n)) |
| 918 | { |
| 919 | if (i > 4800) |
| 920 | return toshoboe_probefail (self, "interrupt test"); |
| 921 | udelay ((9600*(TT_LEN+16))/self->speed); |
| 922 | i++; |
| 923 | } |
| 924 | toshoboe_dumprx (self,i); |
| 925 | |
| 926 | } |
| 927 | |
| 928 | /* test 2: SIR in char at a time */ |
| 929 | |
| 930 | toshoboe_stopchip (self); |
| 931 | self->int_rx = self->int_tx = 0; |
| 932 | |
| 933 | spin_lock_irqsave(&self->spinlock, flags); |
| 934 | toshoboe_startchip (self); |
| 935 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 936 | |
| 937 | self->async = 1; |
| 938 | self->speed = 115200; |
| 939 | toshoboe_setbaud (self); |
| 940 | self->ring->tx[self->txs].control = |
| 941 | OBOE_CTL_TX_RTCENTX | OBOE_CTL_TX_HW_OWNS; |
| 942 | self->ring->tx[self->txs].len = 4; |
| 943 | |
| 944 | ((unsigned char *) self->tx_bufs[self->txs])[0] = 'f'; |
| 945 | ((unsigned char *) self->tx_bufs[self->txs])[1] = 'i'; |
| 946 | ((unsigned char *) self->tx_bufs[self->txs])[2] = 's'; |
| 947 | ((unsigned char *) self->tx_bufs[self->txs])[3] = 'h'; |
| 948 | toshoboe_dumptx (self); |
| 949 | toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP); |
| 950 | |
| 951 | i = 0; |
| 952 | while (toshoboe_numvalidrcvs (self) != 4) |
| 953 | { |
| 954 | if (i > 100) |
| 955 | return toshoboe_probefail (self, "Async test"); |
| 956 | udelay (100); |
| 957 | i++; |
| 958 | } |
| 959 | |
| 960 | while ((toshoboe_numrcvs (self) != self->int_rx) || (self->int_tx != 1)) |
| 961 | { |
| 962 | if (i > 100) |
| 963 | return toshoboe_probefail (self, "Async interrupt test"); |
| 964 | udelay (100); |
| 965 | i++; |
| 966 | } |
| 967 | toshoboe_dumprx (self,i); |
| 968 | |
| 969 | self->async = 0; |
| 970 | self->speed = 9600; |
| 971 | toshoboe_setbaud (self); |
| 972 | toshoboe_stopchip (self); |
| 973 | |
| 974 | free_irq (self->io.irq, (void *) self); |
| 975 | |
| 976 | printk (KERN_WARNING DRIVER_NAME ": Self test passed ok\n"); |
| 977 | |
| 978 | return 1; |
| 979 | } |
| 980 | #endif |
| 981 | |
| 982 | /******************************************************************/ |
| 983 | /* Netdev style code */ |
| 984 | |
| 985 | /* Transmit something */ |
| 986 | static int |
| 987 | toshoboe_hard_xmit (struct sk_buff *skb, struct net_device *dev) |
| 988 | { |
| 989 | struct toshoboe_cb *self; |
| 990 | __s32 speed; |
| 991 | int mtt, len, ctl; |
| 992 | unsigned long flags; |
| 993 | struct irda_skb_cb *cb = (struct irda_skb_cb *) skb->cb; |
| 994 | |
| 995 | self = (struct toshoboe_cb *) dev->priv; |
| 996 | |
| 997 | IRDA_ASSERT (self != NULL, return 0; ); |
| 998 | |
| 999 | IRDA_DEBUG (1, "%s.tx:%x(%x)%x\n", __FUNCTION__ |
| 1000 | ,skb->len,self->txpending,INB (OBOE_ENABLEH)); |
| 1001 | if (!cb->magic) { |
| 1002 | IRDA_DEBUG (2, "%s.Not IrLAP:%x\n", __FUNCTION__, cb->magic); |
| 1003 | #ifdef DUMP_PACKETS |
| 1004 | _dumpbufs(skb->data,skb->len,'>'); |
| 1005 | #endif |
| 1006 | } |
| 1007 | |
| 1008 | /* change speed pending, wait for its execution */ |
| 1009 | if (self->new_speed) |
| 1010 | return -EBUSY; |
| 1011 | |
| 1012 | /* device stopped (apm) wait for restart */ |
| 1013 | if (self->stopped) |
| 1014 | return -EBUSY; |
| 1015 | |
| 1016 | toshoboe_checkstuck (self); |
| 1017 | |
| 1018 | dev->trans_start = jiffies; |
| 1019 | |
| 1020 | /* Check if we need to change the speed */ |
| 1021 | /* But not now. Wait after transmission if mtt not required */ |
| 1022 | speed=irda_get_next_speed(skb); |
| 1023 | if ((speed != self->io.speed) && (speed != -1)) |
| 1024 | { |
| 1025 | spin_lock_irqsave(&self->spinlock, flags); |
| 1026 | |
| 1027 | if (self->txpending || skb->len) |
| 1028 | { |
| 1029 | self->new_speed = speed; |
| 1030 | IRDA_DEBUG (1, "%s: Queued TxDone scheduled speed change %d\n" , |
| 1031 | __FUNCTION__, speed); |
| 1032 | /* if no data, that's all! */ |
| 1033 | if (!skb->len) |
| 1034 | { |
| 1035 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1036 | dev_kfree_skb (skb); |
| 1037 | return 0; |
| 1038 | } |
| 1039 | /* True packet, go on, but */ |
| 1040 | /* do not accept anything before change speed execution */ |
| 1041 | netif_stop_queue(dev); |
| 1042 | /* ready to process TxDone interrupt */ |
| 1043 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1044 | } |
| 1045 | else |
| 1046 | { |
| 1047 | /* idle and no data, change speed now */ |
| 1048 | self->speed = speed; |
| 1049 | toshoboe_setbaud (self); |
| 1050 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1051 | dev_kfree_skb (skb); |
| 1052 | return 0; |
| 1053 | } |
| 1054 | |
| 1055 | } |
| 1056 | |
| 1057 | if ((mtt = irda_get_mtt(skb))) |
| 1058 | { |
| 1059 | /* This is fair since the queue should be empty anyway */ |
| 1060 | spin_lock_irqsave(&self->spinlock, flags); |
| 1061 | |
| 1062 | if (self->txpending) |
| 1063 | { |
| 1064 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1065 | return -EBUSY; |
| 1066 | } |
| 1067 | |
| 1068 | /* If in SIR mode we need to generate a string of XBOFs */ |
| 1069 | /* In MIR and FIR we need to generate a string of data */ |
| 1070 | /* which we will add a wrong checksum to */ |
| 1071 | |
| 1072 | mtt = toshoboe_makemttpacket (self, self->tx_bufs[self->txs], mtt); |
| 1073 | IRDA_DEBUG (1, "%s.mtt:%x(%x)%d\n", __FUNCTION__ |
| 1074 | ,skb->len,mtt,self->txpending); |
| 1075 | if (mtt) |
| 1076 | { |
| 1077 | self->ring->tx[self->txs].len = mtt & 0xfff; |
| 1078 | |
| 1079 | ctl = OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX; |
| 1080 | if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_FIRON) |
| 1081 | { |
| 1082 | ctl |= OBOE_CTL_TX_BAD_CRC | OBOE_CTL_TX_SIP ; |
| 1083 | } |
| 1084 | #ifdef USE_MIR |
| 1085 | else if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_MIRON) |
| 1086 | { |
| 1087 | ctl |= OBOE_CTL_TX_BAD_CRC; |
| 1088 | } |
| 1089 | #endif |
| 1090 | self->ring->tx[self->txs].control = ctl; |
| 1091 | |
| 1092 | OUTB (0x0, OBOE_ENABLEH); |
| 1093 | /* It is only a timer. Do not send mtt packet outside! */ |
| 1094 | toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP); |
| 1095 | |
| 1096 | self->txpending++; |
| 1097 | |
| 1098 | self->txs++; |
| 1099 | self->txs %= TX_SLOTS; |
| 1100 | |
| 1101 | } |
| 1102 | else |
| 1103 | { |
| 1104 | printk(KERN_ERR DRIVER_NAME ": problem with mtt packet - ignored\n"); |
| 1105 | } |
| 1106 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1107 | } |
| 1108 | |
| 1109 | #ifdef DUMP_PACKETS |
| 1110 | dumpbufs(skb->data,skb->len,'>'); |
| 1111 | #endif |
| 1112 | |
| 1113 | spin_lock_irqsave(&self->spinlock, flags); |
| 1114 | |
| 1115 | if (self->ring->tx[self->txs].control & OBOE_CTL_TX_HW_OWNS) |
| 1116 | { |
| 1117 | IRDA_DEBUG (0, "%s.ful:%x(%x)%x\n", __FUNCTION__ |
| 1118 | ,skb->len, self->ring->tx[self->txs].control, self->txpending); |
| 1119 | toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX); |
| 1120 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1121 | return -EBUSY; |
| 1122 | } |
| 1123 | |
| 1124 | if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_SIRON) |
| 1125 | { |
| 1126 | len = async_wrap_skb (skb, self->tx_bufs[self->txs], TX_BUF_SZ); |
| 1127 | } |
| 1128 | else |
| 1129 | { |
| 1130 | len = skb->len; |
| 1131 | memcpy (self->tx_bufs[self->txs], skb->data, len); |
| 1132 | } |
| 1133 | self->ring->tx[self->txs].len = len & 0x0fff; |
| 1134 | |
| 1135 | /*Sometimes the HW doesn't see us assert RTCENTX in the interrupt code */ |
| 1136 | /*later this plays safe, we garuntee the last packet to be transmitted */ |
| 1137 | /*has RTCENTX set */ |
| 1138 | |
| 1139 | ctl = OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX; |
| 1140 | if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_FIRON) |
| 1141 | { |
| 1142 | ctl |= OBOE_CTL_TX_SIP ; |
| 1143 | } |
| 1144 | self->ring->tx[self->txs].control = ctl; |
| 1145 | |
| 1146 | /* If transmitter is idle start in one-shot mode */ |
| 1147 | |
| 1148 | if (!self->txpending) |
| 1149 | toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX); |
| 1150 | |
| 1151 | self->txpending++; |
| 1152 | |
| 1153 | self->txs++; |
| 1154 | self->txs %= TX_SLOTS; |
| 1155 | |
| 1156 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1157 | dev_kfree_skb (skb); |
| 1158 | |
| 1159 | return 0; |
| 1160 | } |
| 1161 | |
| 1162 | /*interrupt handler */ |
| 1163 | static irqreturn_t |
| 1164 | toshoboe_interrupt (int irq, void *dev_id, struct pt_regs *regs) |
| 1165 | { |
| 1166 | struct toshoboe_cb *self = (struct toshoboe_cb *) dev_id; |
| 1167 | __u8 irqstat; |
| 1168 | struct sk_buff *skb = NULL; |
| 1169 | |
| 1170 | if (self == NULL && toshoboe_invalid_dev(irq)) |
| 1171 | return IRQ_NONE; |
| 1172 | |
| 1173 | irqstat = INB (OBOE_ISR); |
| 1174 | |
| 1175 | /* was it us */ |
| 1176 | if (!(irqstat & OBOE_INT_MASK)) |
| 1177 | return IRQ_NONE; |
| 1178 | |
| 1179 | /* Ack all the interrupts */ |
| 1180 | OUTB (irqstat, OBOE_ISR); |
| 1181 | |
| 1182 | toshoboe_isntstuck (self); |
| 1183 | |
| 1184 | /* Txdone */ |
| 1185 | if (irqstat & OBOE_INT_TXDONE) |
| 1186 | { |
| 1187 | int txp, txpc; |
| 1188 | int i; |
| 1189 | |
| 1190 | txp = self->txpending; |
| 1191 | self->txpending = 0; |
| 1192 | |
| 1193 | for (i = 0; i < TX_SLOTS; ++i) |
| 1194 | { |
| 1195 | if (self->ring->tx[i].control & OBOE_CTL_TX_HW_OWNS) |
| 1196 | self->txpending++; |
| 1197 | } |
| 1198 | IRDA_DEBUG (1, "%s.txd(%x)%x/%x\n", __FUNCTION__ |
| 1199 | ,irqstat,txp,self->txpending); |
| 1200 | |
| 1201 | txp = INB (OBOE_TXSLOT) & OBOE_SLOT_MASK; |
| 1202 | |
| 1203 | /* Got anything queued ? start it together */ |
| 1204 | if (self->ring->tx[txp].control & OBOE_CTL_TX_HW_OWNS) |
| 1205 | { |
| 1206 | txpc = txp; |
| 1207 | #ifdef OPTIMIZE_TX |
| 1208 | while (self->ring->tx[txpc].control & OBOE_CTL_TX_HW_OWNS) |
| 1209 | { |
| 1210 | txp = txpc; |
| 1211 | txpc++; |
| 1212 | txpc %= TX_SLOTS; |
| 1213 | self->stats.tx_packets++; |
| 1214 | if (self->ring->tx[txpc].control & OBOE_CTL_TX_HW_OWNS) |
| 1215 | self->ring->tx[txp].control &= ~OBOE_CTL_TX_RTCENTX; |
| 1216 | } |
| 1217 | self->stats.tx_packets--; |
| 1218 | #else |
| 1219 | self->stats.tx_packets++; |
| 1220 | #endif |
| 1221 | toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX); |
| 1222 | } |
| 1223 | |
| 1224 | if ((!self->txpending) && (self->new_speed)) |
| 1225 | { |
| 1226 | self->speed = self->new_speed; |
| 1227 | IRDA_DEBUG (1, "%s: Executed TxDone scheduled speed change %d\n", |
| 1228 | __FUNCTION__, self->speed); |
| 1229 | toshoboe_setbaud (self); |
| 1230 | } |
| 1231 | |
| 1232 | /* Tell network layer that we want more frames */ |
| 1233 | if (!self->new_speed) |
| 1234 | netif_wake_queue(self->netdev); |
| 1235 | } |
| 1236 | |
| 1237 | if (irqstat & OBOE_INT_RXDONE) |
| 1238 | { |
| 1239 | while (!(self->ring->rx[self->rxs].control & OBOE_CTL_RX_HW_OWNS)) |
| 1240 | { |
| 1241 | int len = self->ring->rx[self->rxs].len; |
| 1242 | skb = NULL; |
| 1243 | IRDA_DEBUG (3, "%s.rcv:%x(%x)\n", __FUNCTION__ |
| 1244 | ,len,self->ring->rx[self->rxs].control); |
| 1245 | |
| 1246 | #ifdef DUMP_PACKETS |
| 1247 | dumpbufs(self->rx_bufs[self->rxs],len,'<'); |
| 1248 | #endif |
| 1249 | |
| 1250 | if (self->ring->rx[self->rxs].control == 0) |
| 1251 | { |
| 1252 | __u8 enable = INB (OBOE_ENABLEH); |
| 1253 | |
| 1254 | /* In SIR mode we need to check the CRC as this */ |
| 1255 | /* hasn't been done by the hardware */ |
| 1256 | if (enable & OBOE_ENABLEH_SIRON) |
| 1257 | { |
| 1258 | if (!toshoboe_checkfcs (self->rx_bufs[self->rxs], len)) |
| 1259 | len = 0; |
| 1260 | /*Trim off the CRC */ |
| 1261 | if (len > 1) |
| 1262 | len -= 2; |
| 1263 | else |
| 1264 | len = 0; |
| 1265 | IRDA_DEBUG (1, "%s.SIR:%x(%x)\n", __FUNCTION__, len,enable); |
| 1266 | } |
| 1267 | |
| 1268 | #ifdef USE_MIR |
| 1269 | else if (enable & OBOE_ENABLEH_MIRON) |
| 1270 | { |
| 1271 | if (len > 1) |
| 1272 | len -= 2; |
| 1273 | else |
| 1274 | len = 0; |
| 1275 | IRDA_DEBUG (2, "%s.MIR:%x(%x)\n", __FUNCTION__, len,enable); |
| 1276 | } |
| 1277 | #endif |
| 1278 | else if (enable & OBOE_ENABLEH_FIRON) |
| 1279 | { |
| 1280 | if (len > 3) |
| 1281 | len -= 4; /*FIXME: check this */ |
| 1282 | else |
| 1283 | len = 0; |
| 1284 | IRDA_DEBUG (1, "%s.FIR:%x(%x)\n", __FUNCTION__, len,enable); |
| 1285 | } |
| 1286 | else |
| 1287 | IRDA_DEBUG (0, "%s.?IR:%x(%x)\n", __FUNCTION__, len,enable); |
| 1288 | |
| 1289 | if (len) |
| 1290 | { |
| 1291 | skb = dev_alloc_skb (len + 1); |
| 1292 | if (skb) |
| 1293 | { |
| 1294 | skb_reserve (skb, 1); |
| 1295 | |
| 1296 | skb_put (skb, len); |
| 1297 | memcpy (skb->data, self->rx_bufs[self->rxs], len); |
| 1298 | |
| 1299 | self->stats.rx_packets++; |
| 1300 | skb->dev = self->netdev; |
| 1301 | skb->mac.raw = skb->data; |
| 1302 | skb->protocol = htons (ETH_P_IRDA); |
| 1303 | } |
| 1304 | else |
| 1305 | { |
| 1306 | printk (KERN_INFO |
| 1307 | "%s(), memory squeeze, dropping frame.\n", |
| 1308 | __FUNCTION__); |
| 1309 | } |
| 1310 | } |
| 1311 | } |
| 1312 | else |
| 1313 | { |
| 1314 | /* TODO: =========================================== */ |
| 1315 | /* if OBOE_CTL_RX_LENGTH, our buffers are too small */ |
| 1316 | /* (MIR or FIR) data is lost. */ |
| 1317 | /* (SIR) data is splitted in several slots. */ |
| 1318 | /* we have to join all the received buffers received */ |
| 1319 | /*in a large buffer before checking CRC. */ |
| 1320 | IRDA_DEBUG (0, "%s.err:%x(%x)\n", __FUNCTION__ |
| 1321 | ,len,self->ring->rx[self->rxs].control); |
| 1322 | } |
| 1323 | |
| 1324 | self->ring->rx[self->rxs].len = 0x0; |
| 1325 | self->ring->rx[self->rxs].control = OBOE_CTL_RX_HW_OWNS; |
| 1326 | |
| 1327 | self->rxs++; |
| 1328 | self->rxs %= RX_SLOTS; |
| 1329 | |
| 1330 | if (skb) |
| 1331 | netif_rx (skb); |
| 1332 | |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | if (irqstat & OBOE_INT_TXUNDER) |
| 1337 | { |
| 1338 | printk (KERN_WARNING DRIVER_NAME ": tx fifo underflow\n"); |
| 1339 | } |
| 1340 | if (irqstat & OBOE_INT_RXOVER) |
| 1341 | { |
| 1342 | printk (KERN_WARNING DRIVER_NAME ": rx fifo overflow\n"); |
| 1343 | } |
| 1344 | /* This must be useful for something... */ |
| 1345 | if (irqstat & OBOE_INT_SIP) |
| 1346 | { |
| 1347 | self->int_sip++; |
| 1348 | IRDA_DEBUG (1, "%s.sip:%x(%x)%x\n", __FUNCTION__ |
| 1349 | ,self->int_sip,irqstat,self->txpending); |
| 1350 | } |
| 1351 | return IRQ_HANDLED; |
| 1352 | } |
| 1353 | |
| 1354 | |
| 1355 | static int |
| 1356 | toshoboe_net_open (struct net_device *dev) |
| 1357 | { |
| 1358 | struct toshoboe_cb *self; |
| 1359 | unsigned long flags; |
| 1360 | |
| 1361 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 1362 | |
| 1363 | IRDA_ASSERT (dev != NULL, return -1; ); |
| 1364 | self = (struct toshoboe_cb *) dev->priv; |
| 1365 | |
| 1366 | IRDA_ASSERT (self != NULL, return 0; ); |
| 1367 | |
| 1368 | if (self->async) |
| 1369 | return -EBUSY; |
| 1370 | |
| 1371 | if (self->stopped) |
| 1372 | return 0; |
| 1373 | |
| 1374 | if (request_irq (self->io.irq, toshoboe_interrupt, |
| 1375 | SA_SHIRQ | SA_INTERRUPT, dev->name, (void *) self)) |
| 1376 | { |
| 1377 | return -EAGAIN; |
| 1378 | } |
| 1379 | |
| 1380 | spin_lock_irqsave(&self->spinlock, flags); |
| 1381 | toshoboe_startchip (self); |
| 1382 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1383 | |
| 1384 | /* Ready to play! */ |
| 1385 | netif_start_queue(dev); |
| 1386 | |
| 1387 | /* |
| 1388 | * Open new IrLAP layer instance, now that everything should be |
| 1389 | * initialized properly |
| 1390 | */ |
| 1391 | self->irlap = irlap_open (dev, &self->qos, driver_name); |
| 1392 | |
| 1393 | self->irdad = 1; |
| 1394 | |
| 1395 | return 0; |
| 1396 | } |
| 1397 | |
| 1398 | static int |
| 1399 | toshoboe_net_close (struct net_device *dev) |
| 1400 | { |
| 1401 | struct toshoboe_cb *self; |
| 1402 | |
| 1403 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 1404 | |
| 1405 | IRDA_ASSERT (dev != NULL, return -1; ); |
| 1406 | self = (struct toshoboe_cb *) dev->priv; |
| 1407 | |
| 1408 | /* Stop device */ |
| 1409 | netif_stop_queue(dev); |
| 1410 | |
| 1411 | /* Stop and remove instance of IrLAP */ |
| 1412 | if (self->irlap) |
| 1413 | irlap_close (self->irlap); |
| 1414 | self->irlap = NULL; |
| 1415 | |
| 1416 | self->irdad = 0; |
| 1417 | |
| 1418 | free_irq (self->io.irq, (void *) self); |
| 1419 | |
| 1420 | if (!self->stopped) |
| 1421 | { |
| 1422 | toshoboe_stopchip (self); |
| 1423 | } |
| 1424 | |
| 1425 | return 0; |
| 1426 | } |
| 1427 | |
| 1428 | /* |
| 1429 | * Function toshoboe_net_ioctl (dev, rq, cmd) |
| 1430 | * |
| 1431 | * Process IOCTL commands for this device |
| 1432 | * |
| 1433 | */ |
| 1434 | static int |
| 1435 | toshoboe_net_ioctl (struct net_device *dev, struct ifreq *rq, int cmd) |
| 1436 | { |
| 1437 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 1438 | struct toshoboe_cb *self; |
| 1439 | unsigned long flags; |
| 1440 | int ret = 0; |
| 1441 | |
| 1442 | IRDA_ASSERT (dev != NULL, return -1; ); |
| 1443 | |
| 1444 | self = dev->priv; |
| 1445 | |
| 1446 | IRDA_ASSERT (self != NULL, return -1; ); |
| 1447 | |
| 1448 | IRDA_DEBUG (5, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__, dev->name, cmd); |
| 1449 | |
| 1450 | /* Disable interrupts & save flags */ |
| 1451 | spin_lock_irqsave(&self->spinlock, flags); |
| 1452 | |
| 1453 | switch (cmd) |
| 1454 | { |
| 1455 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
| 1456 | /* This function will also be used by IrLAP to change the |
| 1457 | * speed, so we still must allow for speed change within |
| 1458 | * interrupt context. |
| 1459 | */ |
| 1460 | IRDA_DEBUG (1, "%s(BANDWIDTH), %s, (%X/%ld\n", __FUNCTION__ |
| 1461 | ,dev->name, INB (OBOE_STATUS), irq->ifr_baudrate ); |
Andrew Morton | ac7c98e | 2005-11-08 09:41:13 -0800 | [diff] [blame] | 1462 | if (!in_interrupt () && !capable (CAP_NET_ADMIN)) { |
| 1463 | ret = -EPERM; |
| 1464 | goto out; |
| 1465 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | |
| 1467 | /* self->speed=irq->ifr_baudrate; */ |
| 1468 | /* toshoboe_setbaud(self); */ |
| 1469 | /* Just change speed once - inserted by Paul Bristow */ |
| 1470 | self->new_speed = irq->ifr_baudrate; |
| 1471 | break; |
| 1472 | case SIOCSMEDIABUSY: /* Set media busy */ |
| 1473 | IRDA_DEBUG (1, "%s(MEDIABUSY), %s, (%X/%x)\n", __FUNCTION__ |
| 1474 | ,dev->name, INB (OBOE_STATUS), capable (CAP_NET_ADMIN) ); |
Andrew Morton | ac7c98e | 2005-11-08 09:41:13 -0800 | [diff] [blame] | 1475 | if (!capable (CAP_NET_ADMIN)) { |
| 1476 | ret = -EPERM; |
| 1477 | goto out; |
| 1478 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | irda_device_set_media_busy (self->netdev, TRUE); |
| 1480 | break; |
| 1481 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
| 1482 | irq->ifr_receiving = (INB (OBOE_STATUS) & OBOE_STATUS_RXBUSY) ? 1 : 0; |
| 1483 | IRDA_DEBUG (3, "%s(RECEIVING), %s, (%X/%x)\n", __FUNCTION__ |
| 1484 | ,dev->name, INB (OBOE_STATUS), irq->ifr_receiving ); |
| 1485 | break; |
| 1486 | default: |
| 1487 | IRDA_DEBUG (1, "%s(?), %s, (cmd=0x%X)\n", __FUNCTION__, dev->name, cmd); |
| 1488 | ret = -EOPNOTSUPP; |
| 1489 | } |
Andrew Morton | ac7c98e | 2005-11-08 09:41:13 -0800 | [diff] [blame] | 1490 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1492 | return ret; |
| 1493 | |
| 1494 | } |
| 1495 | |
| 1496 | MODULE_DESCRIPTION("Toshiba OBOE IrDA Device Driver"); |
| 1497 | MODULE_AUTHOR("James McKenzie <james@fishsoup.dhs.org>"); |
| 1498 | MODULE_LICENSE("GPL"); |
| 1499 | |
| 1500 | module_param (max_baud, int, 0); |
| 1501 | MODULE_PARM_DESC(max_baud, "Maximum baud rate"); |
| 1502 | |
| 1503 | #ifdef USE_PROBE |
| 1504 | module_param (do_probe, bool, 0); |
| 1505 | MODULE_PARM_DESC(do_probe, "Enable/disable chip probing and self-test"); |
| 1506 | #endif |
| 1507 | |
| 1508 | static void |
| 1509 | toshoboe_close (struct pci_dev *pci_dev) |
| 1510 | { |
| 1511 | int i; |
| 1512 | struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev); |
| 1513 | |
| 1514 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 1515 | |
| 1516 | IRDA_ASSERT (self != NULL, return; ); |
| 1517 | |
| 1518 | if (!self->stopped) |
| 1519 | { |
| 1520 | toshoboe_stopchip (self); |
| 1521 | } |
| 1522 | |
| 1523 | release_region (self->io.fir_base, self->io.fir_ext); |
| 1524 | |
| 1525 | for (i = 0; i < TX_SLOTS; ++i) |
| 1526 | { |
| 1527 | kfree (self->tx_bufs[i]); |
| 1528 | self->tx_bufs[i] = NULL; |
| 1529 | } |
| 1530 | |
| 1531 | for (i = 0; i < RX_SLOTS; ++i) |
| 1532 | { |
| 1533 | kfree (self->rx_bufs[i]); |
| 1534 | self->rx_bufs[i] = NULL; |
| 1535 | } |
| 1536 | |
| 1537 | unregister_netdev(self->netdev); |
| 1538 | |
| 1539 | kfree (self->ringbuf); |
| 1540 | self->ringbuf = NULL; |
| 1541 | self->ring = NULL; |
| 1542 | |
| 1543 | free_netdev(self->netdev); |
| 1544 | } |
| 1545 | |
| 1546 | static int |
| 1547 | toshoboe_open (struct pci_dev *pci_dev, const struct pci_device_id *pdid) |
| 1548 | { |
| 1549 | struct toshoboe_cb *self; |
| 1550 | struct net_device *dev; |
| 1551 | int i = 0; |
| 1552 | int ok = 0; |
| 1553 | int err; |
| 1554 | |
| 1555 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 1556 | |
| 1557 | if ((err=pci_enable_device(pci_dev))) |
| 1558 | return err; |
| 1559 | |
| 1560 | dev = alloc_irdadev(sizeof (struct toshoboe_cb)); |
| 1561 | if (dev == NULL) |
| 1562 | { |
| 1563 | printk (KERN_ERR DRIVER_NAME ": can't allocate memory for " |
| 1564 | "IrDA control block\n"); |
| 1565 | return -ENOMEM; |
| 1566 | } |
| 1567 | |
| 1568 | self = dev->priv; |
| 1569 | self->netdev = dev; |
| 1570 | self->pdev = pci_dev; |
| 1571 | self->base = pci_resource_start(pci_dev,0); |
| 1572 | |
| 1573 | self->io.fir_base = self->base; |
| 1574 | self->io.fir_ext = OBOE_IO_EXTENT; |
| 1575 | self->io.irq = pci_dev->irq; |
| 1576 | self->io.irqflags = SA_SHIRQ | SA_INTERRUPT; |
| 1577 | |
| 1578 | self->speed = self->io.speed = 9600; |
| 1579 | self->async = 0; |
| 1580 | |
| 1581 | /* Lock the port that we need */ |
| 1582 | if (NULL==request_region (self->io.fir_base, self->io.fir_ext, driver_name)) |
| 1583 | { |
| 1584 | printk (KERN_ERR DRIVER_NAME ": can't get iobase of 0x%03x\n" |
| 1585 | ,self->io.fir_base); |
| 1586 | err = -EBUSY; |
| 1587 | goto freeself; |
| 1588 | } |
| 1589 | |
| 1590 | spin_lock_init(&self->spinlock); |
| 1591 | |
| 1592 | irda_init_max_qos_capabilies (&self->qos); |
| 1593 | self->qos.baud_rate.bits = 0; |
| 1594 | |
| 1595 | if (max_baud >= 2400) |
| 1596 | self->qos.baud_rate.bits |= IR_2400; |
| 1597 | /*if (max_baud>=4800) idev->qos.baud_rate.bits|=IR_4800; */ |
| 1598 | if (max_baud >= 9600) |
| 1599 | self->qos.baud_rate.bits |= IR_9600; |
| 1600 | if (max_baud >= 19200) |
| 1601 | self->qos.baud_rate.bits |= IR_19200; |
| 1602 | if (max_baud >= 115200) |
| 1603 | self->qos.baud_rate.bits |= IR_115200; |
| 1604 | #ifdef USE_MIR |
| 1605 | if (max_baud >= 1152000) |
| 1606 | { |
| 1607 | self->qos.baud_rate.bits |= IR_1152000; |
| 1608 | } |
| 1609 | #endif |
| 1610 | if (max_baud >= 4000000) |
| 1611 | { |
| 1612 | self->qos.baud_rate.bits |= (IR_4000000 << 8); |
| 1613 | } |
| 1614 | |
| 1615 | /*FIXME: work this out... */ |
| 1616 | self->qos.min_turn_time.bits = 0xff; |
| 1617 | |
| 1618 | irda_qos_bits_to_value (&self->qos); |
| 1619 | |
| 1620 | /* Allocate twice the size to guarantee alignment */ |
| 1621 | self->ringbuf = (void *) kmalloc (OBOE_RING_LEN << 1, GFP_KERNEL); |
| 1622 | if (!self->ringbuf) |
| 1623 | { |
| 1624 | printk (KERN_ERR DRIVER_NAME ": can't allocate DMA buffers\n"); |
| 1625 | err = -ENOMEM; |
| 1626 | goto freeregion; |
| 1627 | } |
| 1628 | |
| 1629 | #if (BITS_PER_LONG == 64) |
| 1630 | #error broken on 64-bit: casts pointer to 32-bit, and then back to pointer. |
| 1631 | #endif |
| 1632 | |
| 1633 | /*We need to align the taskfile on a taskfile size boundary */ |
| 1634 | { |
| 1635 | unsigned long addr; |
| 1636 | |
| 1637 | addr = (__u32) self->ringbuf; |
| 1638 | addr &= ~(OBOE_RING_LEN - 1); |
| 1639 | addr += OBOE_RING_LEN; |
| 1640 | self->ring = (struct OboeRing *) addr; |
| 1641 | } |
| 1642 | |
| 1643 | memset (self->ring, 0, OBOE_RING_LEN); |
| 1644 | self->io.mem_base = (__u32) self->ring; |
| 1645 | |
| 1646 | ok = 1; |
| 1647 | for (i = 0; i < TX_SLOTS; ++i) |
| 1648 | { |
| 1649 | self->tx_bufs[i] = kmalloc (TX_BUF_SZ, GFP_KERNEL); |
| 1650 | if (!self->tx_bufs[i]) |
| 1651 | ok = 0; |
| 1652 | } |
| 1653 | |
| 1654 | for (i = 0; i < RX_SLOTS; ++i) |
| 1655 | { |
| 1656 | self->rx_bufs[i] = kmalloc (RX_BUF_SZ, GFP_KERNEL); |
| 1657 | if (!self->rx_bufs[i]) |
| 1658 | ok = 0; |
| 1659 | } |
| 1660 | |
| 1661 | if (!ok) |
| 1662 | { |
| 1663 | printk (KERN_ERR DRIVER_NAME ": can't allocate rx/tx buffers\n"); |
| 1664 | err = -ENOMEM; |
| 1665 | goto freebufs; |
| 1666 | } |
| 1667 | |
| 1668 | |
| 1669 | #ifdef USE_PROBE |
| 1670 | if (do_probe) |
| 1671 | if (!toshoboe_probe (self)) |
| 1672 | { |
| 1673 | err = -ENODEV; |
| 1674 | goto freebufs; |
| 1675 | } |
| 1676 | #endif |
| 1677 | |
| 1678 | SET_MODULE_OWNER(dev); |
| 1679 | SET_NETDEV_DEV(dev, &pci_dev->dev); |
| 1680 | dev->hard_start_xmit = toshoboe_hard_xmit; |
| 1681 | dev->open = toshoboe_net_open; |
| 1682 | dev->stop = toshoboe_net_close; |
| 1683 | dev->do_ioctl = toshoboe_net_ioctl; |
| 1684 | |
| 1685 | err = register_netdev(dev); |
| 1686 | if (err) |
| 1687 | { |
| 1688 | printk (KERN_ERR DRIVER_NAME ": register_netdev() failed\n"); |
| 1689 | err = -ENOMEM; |
| 1690 | goto freebufs; |
| 1691 | } |
| 1692 | printk (KERN_INFO "IrDA: Registered device %s\n", dev->name); |
| 1693 | |
| 1694 | pci_set_drvdata(pci_dev,self); |
| 1695 | |
| 1696 | printk (KERN_INFO DRIVER_NAME ": Using multiple tasks, version %s\n", rcsid); |
| 1697 | |
| 1698 | return 0; |
| 1699 | |
| 1700 | freebufs: |
| 1701 | for (i = 0; i < TX_SLOTS; ++i) |
Jesper Juhl | b4558ea | 2005-10-28 16:53:13 -0400 | [diff] [blame] | 1702 | kfree (self->tx_bufs[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1703 | for (i = 0; i < RX_SLOTS; ++i) |
Jesper Juhl | b4558ea | 2005-10-28 16:53:13 -0400 | [diff] [blame] | 1704 | kfree (self->rx_bufs[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | kfree(self->ringbuf); |
| 1706 | |
| 1707 | freeregion: |
| 1708 | release_region (self->io.fir_base, self->io.fir_ext); |
| 1709 | |
| 1710 | freeself: |
| 1711 | free_netdev(dev); |
| 1712 | |
| 1713 | return err; |
| 1714 | } |
| 1715 | |
| 1716 | static int |
| 1717 | toshoboe_gotosleep (struct pci_dev *pci_dev, pm_message_t crap) |
| 1718 | { |
| 1719 | struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev); |
| 1720 | unsigned long flags; |
| 1721 | int i = 10; |
| 1722 | |
| 1723 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 1724 | |
| 1725 | if (!self || self->stopped) |
| 1726 | return 0; |
| 1727 | |
| 1728 | if ((!self->irdad) && (!self->async)) |
| 1729 | return 0; |
| 1730 | |
| 1731 | /* Flush all packets */ |
| 1732 | while ((i--) && (self->txpending)) |
| 1733 | udelay (10000); |
| 1734 | |
| 1735 | spin_lock_irqsave(&self->spinlock, flags); |
| 1736 | |
| 1737 | toshoboe_stopchip (self); |
| 1738 | self->stopped = 1; |
| 1739 | self->txpending = 0; |
| 1740 | |
| 1741 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1742 | return 0; |
| 1743 | } |
| 1744 | |
| 1745 | static int |
| 1746 | toshoboe_wakeup (struct pci_dev *pci_dev) |
| 1747 | { |
| 1748 | struct toshoboe_cb *self = (struct toshoboe_cb*)pci_get_drvdata(pci_dev); |
| 1749 | unsigned long flags; |
| 1750 | |
| 1751 | IRDA_DEBUG (4, "%s()\n", __FUNCTION__); |
| 1752 | |
| 1753 | if (!self || !self->stopped) |
| 1754 | return 0; |
| 1755 | |
| 1756 | if ((!self->irdad) && (!self->async)) |
| 1757 | return 0; |
| 1758 | |
| 1759 | spin_lock_irqsave(&self->spinlock, flags); |
| 1760 | |
| 1761 | toshoboe_startchip (self); |
| 1762 | self->stopped = 0; |
| 1763 | |
| 1764 | netif_wake_queue(self->netdev); |
| 1765 | spin_unlock_irqrestore(&self->spinlock, flags); |
| 1766 | return 0; |
| 1767 | } |
| 1768 | |
| 1769 | static struct pci_driver donauboe_pci_driver = { |
| 1770 | .name = "donauboe", |
| 1771 | .id_table = toshoboe_pci_tbl, |
| 1772 | .probe = toshoboe_open, |
| 1773 | .remove = toshoboe_close, |
| 1774 | .suspend = toshoboe_gotosleep, |
| 1775 | .resume = toshoboe_wakeup |
| 1776 | }; |
| 1777 | |
| 1778 | static int __init |
| 1779 | donauboe_init (void) |
| 1780 | { |
| 1781 | return pci_module_init(&donauboe_pci_driver); |
| 1782 | } |
| 1783 | |
| 1784 | static void __exit |
| 1785 | donauboe_cleanup (void) |
| 1786 | { |
| 1787 | pci_unregister_driver(&donauboe_pci_driver); |
| 1788 | } |
| 1789 | |
| 1790 | module_init(donauboe_init); |
| 1791 | module_exit(donauboe_cleanup); |