| 1 | /*****************************************************************************/ |
| 2 | |
| 3 | /* |
| 4 | * stallion.c -- stallion multiport serial driver. |
| 5 | * |
| 6 | * Copyright (c) 1995-1996 Greg Ungerer (gerg@stallion.oz.au). |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. All advertising materials mentioning features or use of this software |
| 18 | * must display the following acknowledgement: |
| 19 | * This product includes software developed by Greg Ungerer. |
| 20 | * 4. Neither the name of the author nor the names of any co-contributors |
| 21 | * may be used to endorse or promote products derived from this software |
| 22 | * without specific prior written permission. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 34 | * SUCH DAMAGE. |
| 35 | * |
| 36 | * $FreeBSD: src/sys/i386/isa/stallion.c,v 1.39.2.2 2001/08/30 12:29:57 murray Exp $ |
| 37 | * $DragonFly: src/sys/dev/serial/stl/stallion.c,v 1.21 2006/09/10 01:26:37 dillon Exp $ |
| 38 | */ |
| 39 | |
| 40 | /*****************************************************************************/ |
| 41 | |
| 42 | #define TTYDEFCHARS 1 |
| 43 | |
| 44 | #include "use_pci.h" |
| 45 | #include "opt_compat.h" |
| 46 | |
| 47 | #include <sys/param.h> |
| 48 | #include <sys/systm.h> |
| 49 | #include <sys/kernel.h> |
| 50 | #include <sys/malloc.h> |
| 51 | #include <sys/tty.h> |
| 52 | #include <sys/proc.h> |
| 53 | #include <sys/conf.h> |
| 54 | #include <sys/fcntl.h> |
| 55 | #include <sys/thread2.h> |
| 56 | #include <bus/isa/i386/isa_device.h> |
| 57 | #include <i386/isa/ic/scd1400.h> |
| 58 | #include <i386/isa/ic/sc26198.h> |
| 59 | #include <machine/comstats.h> |
| 60 | |
| 61 | #if NPCI > 0 |
| 62 | #include <bus/pci/pcivar.h> |
| 63 | #include <bus/pci/pcireg.h> |
| 64 | #endif |
| 65 | |
| 66 | #undef STLDEBUG |
| 67 | |
| 68 | /*****************************************************************************/ |
| 69 | |
| 70 | /* |
| 71 | * Define the version level of the kernel - so we can compile in the |
| 72 | * appropriate bits of code. By default this will compile for a 2.1 |
| 73 | * level kernel. |
| 74 | */ |
| 75 | #define VFREEBSD 220 |
| 76 | |
| 77 | #if VFREEBSD >= 220 |
| 78 | #define STATIC static |
| 79 | #else |
| 80 | #define STATIC |
| 81 | #endif |
| 82 | |
| 83 | /*****************************************************************************/ |
| 84 | |
| 85 | /* |
| 86 | * Define different board types. At the moment I have only declared |
| 87 | * those boards that this driver supports. But I will use the standard |
| 88 | * "assigned" board numbers. In the future this driver will support |
| 89 | * some of the other Stallion boards. Currently supported boards are |
| 90 | * abbreviated as EIO = EasyIO and ECH = EasyConnection 8/32. |
| 91 | */ |
| 92 | #define BRD_EASYIO 20 |
| 93 | #define BRD_ECH 21 |
| 94 | #define BRD_ECHMC 22 |
| 95 | #define BRD_ECHPCI 26 |
| 96 | #define BRD_ECH64PCI 27 |
| 97 | #define BRD_EASYIOPCI 28 |
| 98 | |
| 99 | /* |
| 100 | * When using the BSD "config" stuff there is no easy way to specifiy |
| 101 | * a secondary IO address region. So it is hard wired here. Also the |
| 102 | * shared interrupt information is hard wired here... |
| 103 | */ |
| 104 | static unsigned int stl_ioshared = 0x280; |
| 105 | static unsigned int stl_irqshared = 0; |
| 106 | |
| 107 | /*****************************************************************************/ |
| 108 | |
| 109 | /* |
| 110 | * Define important driver limitations. |
| 111 | */ |
| 112 | #define STL_MAXBRDS 8 |
| 113 | #define STL_MAXPANELS 4 |
| 114 | #define STL_MAXBANKS 8 |
| 115 | #define STL_PORTSPERPANEL 16 |
| 116 | #define STL_PORTSPERBRD 64 |
| 117 | |
| 118 | /* |
| 119 | * Define the important minor number break down bits. These have been |
| 120 | * chosen to be "compatible" with the standard sio driver minor numbers. |
| 121 | * Extra high bits are used to distinguish between boards. |
| 122 | */ |
| 123 | #define STL_CALLOUTDEV 0x80 |
| 124 | #define STL_CTRLLOCK 0x40 |
| 125 | #define STL_CTRLINIT 0x20 |
| 126 | #define STL_CTRLDEV (STL_CTRLLOCK | STL_CTRLINIT) |
| 127 | |
| 128 | #define STL_MEMDEV 0x07000000 |
| 129 | |
| 130 | #define STL_DEFSPEED TTYDEF_SPEED |
| 131 | #define STL_DEFCFLAG (CS8 | CREAD | HUPCL) |
| 132 | |
| 133 | /* |
| 134 | * I haven't really decided (or measured) what buffer sizes give |
| 135 | * a good balance between performance and memory usage. These seem |
| 136 | * to work pretty well... |
| 137 | */ |
| 138 | #define STL_RXBUFSIZE 2048 |
| 139 | #define STL_TXBUFSIZE 2048 |
| 140 | |
| 141 | #define STL_TXBUFLOW (STL_TXBUFSIZE / 4) |
| 142 | #define STL_RXBUFHIGH (3 * STL_RXBUFSIZE / 4) |
| 143 | |
| 144 | /*****************************************************************************/ |
| 145 | |
| 146 | /* |
| 147 | * Define our local driver identity first. Set up stuff to deal with |
| 148 | * all the local structures required by a serial tty driver. |
| 149 | */ |
| 150 | static const char stl_drvname[] = "stl"; |
| 151 | static const char stl_longdrvname[] = "Stallion Multiport Serial Driver"; |
| 152 | static const char stl_drvversion[] = "2.0.0"; |
| 153 | static int stl_brdprobed[STL_MAXBRDS]; |
| 154 | |
| 155 | static int stl_nrbrds = 0; |
| 156 | static int stl_doingtimeout = 0; |
| 157 | static struct callout stl_poll_ch; |
| 158 | |
| 159 | static const char __file__[] = /*__FILE__*/ "stallion.c"; |
| 160 | |
| 161 | /* |
| 162 | * Define global stats structures. Not used often, and can be |
| 163 | * re-used for each stats call. |
| 164 | */ |
| 165 | static combrd_t stl_brdstats; |
| 166 | static comstats_t stl_comstats; |
| 167 | |
| 168 | /*****************************************************************************/ |
| 169 | |
| 170 | /* |
| 171 | * Define a set of structures to hold all the board/panel/port info |
| 172 | * for our ports. These will be dynamically allocated as required. |
| 173 | */ |
| 174 | |
| 175 | /* |
| 176 | * Define a ring queue structure for each port. This will hold the |
| 177 | * TX data waiting to be output. Characters are fed into this buffer |
| 178 | * from the line discipline (or even direct from user space!) and |
| 179 | * then fed into the UARTs during interrupts. Will use a clasic ring |
| 180 | * queue here for this. The good thing about this type of ring queue |
| 181 | * is that the head and tail pointers can be updated without interrupt |
| 182 | * protection - since "write" code only needs to change the head, and |
| 183 | * interrupt code only needs to change the tail. |
| 184 | */ |
| 185 | typedef struct { |
| 186 | char *buf; |
| 187 | char *endbuf; |
| 188 | char *head; |
| 189 | char *tail; |
| 190 | } stlrq_t; |
| 191 | |
| 192 | /* |
| 193 | * Port, panel and board structures to hold status info about each. |
| 194 | * The board structure contains pointers to structures for each panel |
| 195 | * connected to it, and in turn each panel structure contains pointers |
| 196 | * for each port structure for each port on that panel. Note that |
| 197 | * the port structure also contains the board and panel number that it |
| 198 | * is associated with, this makes it (fairly) easy to get back to the |
| 199 | * board/panel info for a port. Also note that the tty struct is at |
| 200 | * the top of the structure, this is important, since the code uses |
| 201 | * this fact to get the port struct pointer from the tty struct |
| 202 | * pointer! |
| 203 | */ |
| 204 | typedef struct stlport { |
| 205 | struct tty tty; |
| 206 | int portnr; |
| 207 | int panelnr; |
| 208 | int brdnr; |
| 209 | int ioaddr; |
| 210 | int uartaddr; |
| 211 | int pagenr; |
| 212 | int callout; |
| 213 | int brklen; |
| 214 | int dtrwait; |
| 215 | int dotimestamp; |
| 216 | int waitopens; |
| 217 | int hotchar; |
| 218 | void *uartp; |
| 219 | unsigned int state; |
| 220 | unsigned int hwid; |
| 221 | unsigned int sigs; |
| 222 | unsigned int rxignoremsk; |
| 223 | unsigned int rxmarkmsk; |
| 224 | unsigned int crenable; |
| 225 | unsigned int imr; |
| 226 | unsigned long clk; |
| 227 | struct termios initintios; |
| 228 | struct termios initouttios; |
| 229 | struct termios lockintios; |
| 230 | struct termios lockouttios; |
| 231 | struct timeval timestamp; |
| 232 | comstats_t stats; |
| 233 | stlrq_t tx; |
| 234 | stlrq_t rx; |
| 235 | stlrq_t rxstatus; |
| 236 | struct callout dtr_ch; |
| 237 | } stlport_t; |
| 238 | |
| 239 | typedef struct stlpanel { |
| 240 | int panelnr; |
| 241 | int brdnr; |
| 242 | int pagenr; |
| 243 | int nrports; |
| 244 | int iobase; |
| 245 | unsigned int hwid; |
| 246 | unsigned int ackmask; |
| 247 | void (*isr)(struct stlpanel *panelp, unsigned int iobase); |
| 248 | void *uartp; |
| 249 | stlport_t *ports[STL_PORTSPERPANEL]; |
| 250 | } stlpanel_t; |
| 251 | |
| 252 | typedef struct stlbrd { |
| 253 | int brdnr; |
| 254 | int brdtype; |
| 255 | int unitid; |
| 256 | int state; |
| 257 | int nrpanels; |
| 258 | int nrports; |
| 259 | int nrbnks; |
| 260 | int irq; |
| 261 | int irqtype; |
| 262 | unsigned int ioaddr1; |
| 263 | unsigned int ioaddr2; |
| 264 | unsigned int iostatus; |
| 265 | unsigned int ioctrl; |
| 266 | unsigned int ioctrlval; |
| 267 | unsigned int hwid; |
| 268 | unsigned long clk; |
| 269 | void (*isr)(struct stlbrd *brdp); |
| 270 | unsigned int bnkpageaddr[STL_MAXBANKS]; |
| 271 | unsigned int bnkstataddr[STL_MAXBANKS]; |
| 272 | stlpanel_t *bnk2panel[STL_MAXBANKS]; |
| 273 | stlpanel_t *panels[STL_MAXPANELS]; |
| 274 | stlport_t *ports[STL_PORTSPERBRD]; |
| 275 | } stlbrd_t; |
| 276 | |
| 277 | static stlbrd_t *stl_brds[STL_MAXBRDS]; |
| 278 | |
| 279 | /* |
| 280 | * Per board state flags. Used with the state field of the board struct. |
| 281 | * Not really much here yet! |
| 282 | */ |
| 283 | #define BRD_FOUND 0x1 |
| 284 | |
| 285 | /* |
| 286 | * Define the port structure state flags. These set of flags are |
| 287 | * modified at interrupt time - so setting and reseting them needs |
| 288 | * to be atomic. |
| 289 | */ |
| 290 | #define ASY_TXLOW 0x1 |
| 291 | #define ASY_RXDATA 0x2 |
| 292 | #define ASY_DCDCHANGE 0x4 |
| 293 | #define ASY_DTRWAIT 0x8 |
| 294 | #define ASY_RTSFLOW 0x10 |
| 295 | #define ASY_RTSFLOWMODE 0x20 |
| 296 | #define ASY_CTSFLOWMODE 0x40 |
| 297 | #define ASY_TXFLOWED 0x80 |
| 298 | #define ASY_TXBUSY 0x100 |
| 299 | #define ASY_TXEMPTY 0x200 |
| 300 | |
| 301 | #define ASY_ACTIVE (ASY_TXLOW | ASY_RXDATA | ASY_DCDCHANGE) |
| 302 | |
| 303 | /* |
| 304 | * Define an array of board names as printable strings. Handy for |
| 305 | * referencing boards when printing trace and stuff. |
| 306 | */ |
| 307 | static char *stl_brdnames[] = { |
| 308 | (char *) NULL, |
| 309 | (char *) NULL, |
| 310 | (char *) NULL, |
| 311 | (char *) NULL, |
| 312 | (char *) NULL, |
| 313 | (char *) NULL, |
| 314 | (char *) NULL, |
| 315 | (char *) NULL, |
| 316 | (char *) NULL, |
| 317 | (char *) NULL, |
| 318 | (char *) NULL, |
| 319 | (char *) NULL, |
| 320 | (char *) NULL, |
| 321 | (char *) NULL, |
| 322 | (char *) NULL, |
| 323 | (char *) NULL, |
| 324 | (char *) NULL, |
| 325 | (char *) NULL, |
| 326 | (char *) NULL, |
| 327 | (char *) NULL, |
| 328 | "EasyIO", |
| 329 | "EC8/32-AT", |
| 330 | "EC8/32-MC", |
| 331 | (char *) NULL, |
| 332 | (char *) NULL, |
| 333 | (char *) NULL, |
| 334 | "EC8/32-PCI", |
| 335 | "EC8/64-PCI", |
| 336 | "EasyIO-PCI", |
| 337 | }; |
| 338 | |
| 339 | /*****************************************************************************/ |
| 340 | |
| 341 | /* |
| 342 | * Hardware ID bits for the EasyIO and ECH boards. These defines apply |
| 343 | * to the directly accessable io ports of these boards (not the cd1400 |
| 344 | * uarts - they are in scd1400.h). |
| 345 | */ |
| 346 | #define EIO_8PORTRS 0x04 |
| 347 | #define EIO_4PORTRS 0x05 |
| 348 | #define EIO_8PORTDI 0x00 |
| 349 | #define EIO_8PORTM 0x06 |
| 350 | #define EIO_MK3 0x03 |
| 351 | #define EIO_IDBITMASK 0x07 |
| 352 | |
| 353 | #define EIO_BRDMASK 0xf0 |
| 354 | #define ID_BRD4 0x10 |
| 355 | #define ID_BRD8 0x20 |
| 356 | #define ID_BRD16 0x30 |
| 357 | |
| 358 | #define EIO_INTRPEND 0x08 |
| 359 | #define EIO_INTEDGE 0x00 |
| 360 | #define EIO_INTLEVEL 0x08 |
| 361 | |
| 362 | #define ECH_ID 0xa0 |
| 363 | #define ECH_IDBITMASK 0xe0 |
| 364 | #define ECH_BRDENABLE 0x08 |
| 365 | #define ECH_BRDDISABLE 0x00 |
| 366 | #define ECH_INTENABLE 0x01 |
| 367 | #define ECH_INTDISABLE 0x00 |
| 368 | #define ECH_INTLEVEL 0x02 |
| 369 | #define ECH_INTEDGE 0x00 |
| 370 | #define ECH_INTRPEND 0x01 |
| 371 | #define ECH_BRDRESET 0x01 |
| 372 | |
| 373 | #define ECHMC_INTENABLE 0x01 |
| 374 | #define ECHMC_BRDRESET 0x02 |
| 375 | |
| 376 | #define ECH_PNLSTATUS 2 |
| 377 | #define ECH_PNL16PORT 0x20 |
| 378 | #define ECH_PNLIDMASK 0x07 |
| 379 | #define ECH_PNLXPID 0x40 |
| 380 | #define ECH_PNLINTRPEND 0x80 |
| 381 | #define ECH_ADDR2MASK 0x1e0 |
| 382 | |
| 383 | #define EIO_CLK 25000000 |
| 384 | #define EIO_CLK8M 20000000 |
| 385 | #define ECH_CLK EIO_CLK |
| 386 | |
| 387 | /* |
| 388 | * Define the PCI vendor and device ID for Stallion PCI boards. |
| 389 | */ |
| 390 | #define STL_PCINSVENDID 0x100b |
| 391 | #define STL_PCINSDEVID 0xd001 |
| 392 | |
| 393 | #define STL_PCIVENDID 0x124d |
| 394 | #define STL_PCI32DEVID 0x0000 |
| 395 | #define STL_PCI64DEVID 0x0002 |
| 396 | #define STL_PCIEIODEVID 0x0003 |
| 397 | |
| 398 | #define STL_PCIBADCLASS 0x0101 |
| 399 | |
| 400 | typedef struct stlpcibrd { |
| 401 | unsigned short vendid; |
| 402 | unsigned short devid; |
| 403 | int brdtype; |
| 404 | } stlpcibrd_t; |
| 405 | |
| 406 | static stlpcibrd_t stl_pcibrds[] = { |
| 407 | { STL_PCIVENDID, STL_PCI64DEVID, BRD_ECH64PCI }, |
| 408 | { STL_PCIVENDID, STL_PCIEIODEVID, BRD_EASYIOPCI }, |
| 409 | { STL_PCIVENDID, STL_PCI32DEVID, BRD_ECHPCI }, |
| 410 | { STL_PCINSVENDID, STL_PCINSDEVID, BRD_ECHPCI }, |
| 411 | }; |
| 412 | |
| 413 | static int stl_nrpcibrds = sizeof(stl_pcibrds) / sizeof(stlpcibrd_t); |
| 414 | |
| 415 | /*****************************************************************************/ |
| 416 | |
| 417 | /* |
| 418 | * Define the vector mapping bits for the programmable interrupt board |
| 419 | * hardware. These bits encode the interrupt for the board to use - it |
| 420 | * is software selectable (except the EIO-8M). |
| 421 | */ |
| 422 | static unsigned char stl_vecmap[] = { |
| 423 | 0xff, 0xff, 0xff, 0x04, 0x06, 0x05, 0xff, 0x07, |
| 424 | 0xff, 0xff, 0x00, 0x02, 0x01, 0xff, 0xff, 0x03 |
| 425 | }; |
| 426 | |
| 427 | /* |
| 428 | * Set up enable and disable macros for the ECH boards. They require |
| 429 | * the secondary io address space to be activated and deactivated. |
| 430 | * This way all ECH boards can share their secondary io region. |
| 431 | * If this is an ECH-PCI board then also need to set the page pointer |
| 432 | * to point to the correct page. |
| 433 | */ |
| 434 | #define BRDENABLE(brdnr,pagenr) \ |
| 435 | if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \ |
| 436 | outb(stl_brds[(brdnr)]->ioctrl, \ |
| 437 | (stl_brds[(brdnr)]->ioctrlval | ECH_BRDENABLE));\ |
| 438 | else if (stl_brds[(brdnr)]->brdtype == BRD_ECHPCI) \ |
| 439 | outb(stl_brds[(brdnr)]->ioctrl, (pagenr)); |
| 440 | |
| 441 | #define BRDDISABLE(brdnr) \ |
| 442 | if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \ |
| 443 | outb(stl_brds[(brdnr)]->ioctrl, \ |
| 444 | (stl_brds[(brdnr)]->ioctrlval | ECH_BRDDISABLE)); |
| 445 | |
| 446 | /* |
| 447 | * Define some spare buffer space for un-wanted received characters. |
| 448 | */ |
| 449 | static char stl_unwanted[SC26198_RXFIFOSIZE]; |
| 450 | |
| 451 | /*****************************************************************************/ |
| 452 | |
| 453 | /* |
| 454 | * Define macros to extract a brd and port number from a minor number. |
| 455 | * This uses the extended minor number range in the upper 2 bytes of |
| 456 | * the device number. This gives us plenty of minor numbers to play |
| 457 | * with... |
| 458 | */ |
| 459 | #define MKDEV2BRD(m) ((minor(m) & 0x00700000) >> 20) |
| 460 | #define MKDEV2PORT(m) ((minor(m) & 0x1f) | ((minor(m) & 0x00010000) >> 11)) |
| 461 | |
| 462 | /* |
| 463 | * Define some handy local macros... |
| 464 | */ |
| 465 | #ifndef MIN |
| 466 | #define MIN(a,b) (((a) <= (b)) ? (a) : (b)) |
| 467 | #endif |
| 468 | |
| 469 | /*****************************************************************************/ |
| 470 | |
| 471 | /* |
| 472 | * Declare all those functions in this driver! First up is the set of |
| 473 | * externally visible functions. |
| 474 | */ |
| 475 | |
| 476 | static int stlprobe(struct isa_device *idp); |
| 477 | static int stlattach(struct isa_device *idp); |
| 478 | |
| 479 | STATIC d_open_t stlopen; |
| 480 | STATIC d_close_t stlclose; |
| 481 | STATIC d_ioctl_t stlioctl; |
| 482 | |
| 483 | /* |
| 484 | * Internal function prototypes. |
| 485 | */ |
| 486 | static stlport_t *stl_dev2port(cdev_t dev); |
| 487 | static int stl_findfreeunit(void); |
| 488 | static int stl_rawopen(stlport_t *portp); |
| 489 | static int stl_rawclose(stlport_t *portp); |
| 490 | static void stl_flush(stlport_t *portp, int flag); |
| 491 | static int stl_param(struct tty *tp, struct termios *tiosp); |
| 492 | static void stl_start(struct tty *tp); |
| 493 | static void stl_stop(struct tty *tp, int); |
| 494 | static void stl_ttyoptim(stlport_t *portp, struct termios *tiosp); |
| 495 | static void stl_dotimeout(void); |
| 496 | static void stl_poll(void *arg); |
| 497 | static void stl_rxprocess(stlport_t *portp); |
| 498 | static void stl_flowcontrol(stlport_t *portp, int hw, int sw); |
| 499 | static void stl_dtrwakeup(void *arg); |
| 500 | static int stl_brdinit(stlbrd_t *brdp); |
| 501 | static int stl_initeio(stlbrd_t *brdp); |
| 502 | static int stl_initech(stlbrd_t *brdp); |
| 503 | static int stl_initports(stlbrd_t *brdp, stlpanel_t *panelp); |
| 504 | static void stl_eiointr(stlbrd_t *brdp); |
| 505 | static void stl_echatintr(stlbrd_t *brdp); |
| 506 | static void stl_echmcaintr(stlbrd_t *brdp); |
| 507 | static void stl_echpciintr(stlbrd_t *brdp); |
| 508 | static void stl_echpci64intr(stlbrd_t *brdp); |
| 509 | static int stl_memioctl(cdev_t dev, unsigned long cmd, caddr_t data, |
| 510 | int flag); |
| 511 | static int stl_getbrdstats(caddr_t data); |
| 512 | static int stl_getportstats(stlport_t *portp, caddr_t data); |
| 513 | static int stl_clrportstats(stlport_t *portp, caddr_t data); |
| 514 | static stlport_t *stl_getport(int brdnr, int panelnr, int portnr); |
| 515 | static void stlintr(void *); |
| 516 | |
| 517 | #if NPCI > 0 |
| 518 | static const char *stlpciprobe(pcici_t tag, pcidi_t type); |
| 519 | static void stlpciattach(pcici_t tag, int unit); |
| 520 | static void stlpciintr(void * arg); |
| 521 | #endif |
| 522 | |
| 523 | /* |
| 524 | * CD1400 uart specific handling functions. |
| 525 | */ |
| 526 | static void stl_cd1400setreg(stlport_t *portp, int regnr, int value); |
| 527 | static int stl_cd1400getreg(stlport_t *portp, int regnr); |
| 528 | static int stl_cd1400updatereg(stlport_t *portp, int regnr, int value); |
| 529 | static int stl_cd1400panelinit(stlbrd_t *brdp, stlpanel_t *panelp); |
| 530 | static void stl_cd1400portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp); |
| 531 | static int stl_cd1400setport(stlport_t *portp, struct termios *tiosp); |
| 532 | static int stl_cd1400getsignals(stlport_t *portp); |
| 533 | static void stl_cd1400setsignals(stlport_t *portp, int dtr, int rts); |
| 534 | static void stl_cd1400ccrwait(stlport_t *portp); |
| 535 | static void stl_cd1400enablerxtx(stlport_t *portp, int rx, int tx); |
| 536 | static void stl_cd1400startrxtx(stlport_t *portp, int rx, int tx); |
| 537 | static void stl_cd1400disableintrs(stlport_t *portp); |
| 538 | static void stl_cd1400sendbreak(stlport_t *portp, long len); |
| 539 | static void stl_cd1400sendflow(stlport_t *portp, int hw, int sw); |
| 540 | static int stl_cd1400datastate(stlport_t *portp); |
| 541 | static void stl_cd1400flush(stlport_t *portp, int flag); |
| 542 | static __inline void stl_cd1400txisr(stlpanel_t *panelp, int ioaddr); |
| 543 | static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr); |
| 544 | static void stl_cd1400mdmisr(stlpanel_t *panelp, int ioaddr); |
| 545 | static void stl_cd1400eiointr(stlpanel_t *panelp, unsigned int iobase); |
| 546 | static void stl_cd1400echintr(stlpanel_t *panelp, unsigned int iobase); |
| 547 | |
| 548 | /* |
| 549 | * SC26198 uart specific handling functions. |
| 550 | */ |
| 551 | static void stl_sc26198setreg(stlport_t *portp, int regnr, int value); |
| 552 | static int stl_sc26198getreg(stlport_t *portp, int regnr); |
| 553 | static int stl_sc26198updatereg(stlport_t *portp, int regnr, int value); |
| 554 | static int stl_sc26198getglobreg(stlport_t *portp, int regnr); |
| 555 | static int stl_sc26198panelinit(stlbrd_t *brdp, stlpanel_t *panelp); |
| 556 | static void stl_sc26198portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp); |
| 557 | static int stl_sc26198setport(stlport_t *portp, struct termios *tiosp); |
| 558 | static int stl_sc26198getsignals(stlport_t *portp); |
| 559 | static void stl_sc26198setsignals(stlport_t *portp, int dtr, int rts); |
| 560 | static void stl_sc26198enablerxtx(stlport_t *portp, int rx, int tx); |
| 561 | static void stl_sc26198startrxtx(stlport_t *portp, int rx, int tx); |
| 562 | static void stl_sc26198disableintrs(stlport_t *portp); |
| 563 | static void stl_sc26198sendbreak(stlport_t *portp, long len); |
| 564 | static void stl_sc26198sendflow(stlport_t *portp, int hw, int sw); |
| 565 | static int stl_sc26198datastate(stlport_t *portp); |
| 566 | static void stl_sc26198flush(stlport_t *portp, int flag); |
| 567 | static void stl_sc26198txunflow(stlport_t *portp); |
| 568 | static void stl_sc26198wait(stlport_t *portp); |
| 569 | static void stl_sc26198intr(stlpanel_t *panelp, unsigned int iobase); |
| 570 | static void stl_sc26198txisr(stlport_t *port); |
| 571 | static void stl_sc26198rxisr(stlport_t *port, unsigned int iack); |
| 572 | static void stl_sc26198rxgoodchars(stlport_t *portp); |
| 573 | static void stl_sc26198rxbadchars(stlport_t *portp); |
| 574 | static void stl_sc26198otherisr(stlport_t *port, unsigned int iack); |
| 575 | |
| 576 | /*****************************************************************************/ |
| 577 | |
| 578 | /* |
| 579 | * Generic UART support structure. |
| 580 | */ |
| 581 | typedef struct uart { |
| 582 | int (*panelinit)(stlbrd_t *brdp, stlpanel_t *panelp); |
| 583 | void (*portinit)(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp); |
| 584 | int (*setport)(stlport_t *portp, struct termios *tiosp); |
| 585 | int (*getsignals)(stlport_t *portp); |
| 586 | void (*setsignals)(stlport_t *portp, int dtr, int rts); |
| 587 | void (*enablerxtx)(stlport_t *portp, int rx, int tx); |
| 588 | void (*startrxtx)(stlport_t *portp, int rx, int tx); |
| 589 | void (*disableintrs)(stlport_t *portp); |
| 590 | void (*sendbreak)(stlport_t *portp, long len); |
| 591 | void (*sendflow)(stlport_t *portp, int hw, int sw); |
| 592 | void (*flush)(stlport_t *portp, int flag); |
| 593 | int (*datastate)(stlport_t *portp); |
| 594 | void (*intr)(stlpanel_t *panelp, unsigned int iobase); |
| 595 | } uart_t; |
| 596 | |
| 597 | /* |
| 598 | * Define some macros to make calling these functions nice and clean. |
| 599 | */ |
| 600 | #define stl_panelinit (* ((uart_t *) panelp->uartp)->panelinit) |
| 601 | #define stl_portinit (* ((uart_t *) portp->uartp)->portinit) |
| 602 | #define stl_setport (* ((uart_t *) portp->uartp)->setport) |
| 603 | #define stl_getsignals (* ((uart_t *) portp->uartp)->getsignals) |
| 604 | #define stl_setsignals (* ((uart_t *) portp->uartp)->setsignals) |
| 605 | #define stl_enablerxtx (* ((uart_t *) portp->uartp)->enablerxtx) |
| 606 | #define stl_startrxtx (* ((uart_t *) portp->uartp)->startrxtx) |
| 607 | #define stl_disableintrs (* ((uart_t *) portp->uartp)->disableintrs) |
| 608 | #define stl_sendbreak (* ((uart_t *) portp->uartp)->sendbreak) |
| 609 | #define stl_sendflow (* ((uart_t *) portp->uartp)->sendflow) |
| 610 | #define stl_uartflush (* ((uart_t *) portp->uartp)->flush) |
| 611 | #define stl_datastate (* ((uart_t *) portp->uartp)->datastate) |
| 612 | |
| 613 | /*****************************************************************************/ |
| 614 | |
| 615 | /* |
| 616 | * CD1400 UART specific data initialization. |
| 617 | */ |
| 618 | static uart_t stl_cd1400uart = { |
| 619 | stl_cd1400panelinit, |
| 620 | stl_cd1400portinit, |
| 621 | stl_cd1400setport, |
| 622 | stl_cd1400getsignals, |
| 623 | stl_cd1400setsignals, |
| 624 | stl_cd1400enablerxtx, |
| 625 | stl_cd1400startrxtx, |
| 626 | stl_cd1400disableintrs, |
| 627 | stl_cd1400sendbreak, |
| 628 | stl_cd1400sendflow, |
| 629 | stl_cd1400flush, |
| 630 | stl_cd1400datastate, |
| 631 | stl_cd1400eiointr |
| 632 | }; |
| 633 | |
| 634 | /* |
| 635 | * Define the offsets within the register bank of a cd1400 based panel. |
| 636 | * These io address offsets are common to the EasyIO board as well. |
| 637 | */ |
| 638 | #define EREG_ADDR 0 |
| 639 | #define EREG_DATA 4 |
| 640 | #define EREG_RXACK 5 |
| 641 | #define EREG_TXACK 6 |
| 642 | #define EREG_MDACK 7 |
| 643 | |
| 644 | #define EREG_BANKSIZE 8 |
| 645 | |
| 646 | #define CD1400_CLK 25000000 |
| 647 | #define CD1400_CLK8M 20000000 |
| 648 | |
| 649 | /* |
| 650 | * Define the cd1400 baud rate clocks. These are used when calculating |
| 651 | * what clock and divisor to use for the required baud rate. Also |
| 652 | * define the maximum baud rate allowed, and the default base baud. |
| 653 | */ |
| 654 | static int stl_cd1400clkdivs[] = { |
| 655 | CD1400_CLK0, CD1400_CLK1, CD1400_CLK2, CD1400_CLK3, CD1400_CLK4 |
| 656 | }; |
| 657 | |
| 658 | /* |
| 659 | * Define the maximum baud rate of the cd1400 devices. |
| 660 | */ |
| 661 | #define CD1400_MAXBAUD 230400 |
| 662 | |
| 663 | /*****************************************************************************/ |
| 664 | |
| 665 | /* |
| 666 | * SC26198 UART specific data initization. |
| 667 | */ |
| 668 | static uart_t stl_sc26198uart = { |
| 669 | stl_sc26198panelinit, |
| 670 | stl_sc26198portinit, |
| 671 | stl_sc26198setport, |
| 672 | stl_sc26198getsignals, |
| 673 | stl_sc26198setsignals, |
| 674 | stl_sc26198enablerxtx, |
| 675 | stl_sc26198startrxtx, |
| 676 | stl_sc26198disableintrs, |
| 677 | stl_sc26198sendbreak, |
| 678 | stl_sc26198sendflow, |
| 679 | stl_sc26198flush, |
| 680 | stl_sc26198datastate, |
| 681 | stl_sc26198intr |
| 682 | }; |
| 683 | |
| 684 | /* |
| 685 | * Define the offsets within the register bank of a sc26198 based panel. |
| 686 | */ |
| 687 | #define XP_DATA 0 |
| 688 | #define XP_ADDR 1 |
| 689 | #define XP_MODID 2 |
| 690 | #define XP_STATUS 2 |
| 691 | #define XP_IACK 3 |
| 692 | |
| 693 | #define XP_BANKSIZE 4 |
| 694 | |
| 695 | /* |
| 696 | * Define the sc26198 baud rate table. Offsets within the table |
| 697 | * represent the actual baud rate selector of sc26198 registers. |
| 698 | */ |
| 699 | static unsigned int sc26198_baudtable[] = { |
| 700 | 50, 75, 150, 200, 300, 450, 600, 900, 1200, 1800, 2400, 3600, |
| 701 | 4800, 7200, 9600, 14400, 19200, 28800, 38400, 57600, 115200, |
| 702 | 230400, 460800 |
| 703 | }; |
| 704 | |
| 705 | #define SC26198_NRBAUDS (sizeof(sc26198_baudtable) / sizeof(unsigned int)) |
| 706 | |
| 707 | /* |
| 708 | * Define the maximum baud rate of the sc26198 devices. |
| 709 | */ |
| 710 | #define SC26198_MAXBAUD 460800 |
| 711 | |
| 712 | /*****************************************************************************/ |
| 713 | |
| 714 | /* |
| 715 | * Declare the driver isa structure. |
| 716 | */ |
| 717 | struct isa_driver stldriver = { |
| 718 | stlprobe, stlattach, "stl" |
| 719 | }; |
| 720 | |
| 721 | /*****************************************************************************/ |
| 722 | |
| 723 | #if NPCI > 0 |
| 724 | |
| 725 | /* |
| 726 | * Declare the driver pci structure. |
| 727 | */ |
| 728 | static unsigned long stl_count; |
| 729 | |
| 730 | static struct pci_device stlpcidriver = { |
| 731 | "stl", |
| 732 | stlpciprobe, |
| 733 | stlpciattach, |
| 734 | &stl_count, |
| 735 | NULL, |
| 736 | }; |
| 737 | |
| 738 | COMPAT_PCI_DRIVER (stlpci, stlpcidriver); |
| 739 | |
| 740 | #endif |
| 741 | |
| 742 | /*****************************************************************************/ |
| 743 | |
| 744 | #if VFREEBSD >= 220 |
| 745 | |
| 746 | /* |
| 747 | * FreeBSD-2.2+ kernel linkage. |
| 748 | */ |
| 749 | |
| 750 | #define CDEV_MAJOR 72 |
| 751 | static struct dev_ops stl_ops = { |
| 752 | { "stl", CDEV_MAJOR, D_TTY | D_KQFILTER }, |
| 753 | .d_open = stlopen, |
| 754 | .d_close = stlclose, |
| 755 | .d_read = ttyread, |
| 756 | .d_write = ttywrite, |
| 757 | .d_ioctl = stlioctl, |
| 758 | .d_poll = ttypoll, |
| 759 | .d_kqfilter = ttykqfilter |
| 760 | }; |
| 761 | |
| 762 | static void stl_drvinit(void *unused) |
| 763 | { |
| 764 | } |
| 765 | |
| 766 | SYSINIT(sidev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,stl_drvinit,NULL) |
| 767 | |
| 768 | #endif |
| 769 | |
| 770 | /*****************************************************************************/ |
| 771 | |
| 772 | /* |
| 773 | * Probe for some type of EasyIO or EasyConnection 8/32 board at |
| 774 | * the supplied address. All we do is check if we can find the |
| 775 | * board ID for the board... (Note, PCI boards not checked here, |
| 776 | * they are done in the stlpciprobe() routine). |
| 777 | */ |
| 778 | |
| 779 | static int stlprobe(struct isa_device *idp) |
| 780 | { |
| 781 | unsigned int status; |
| 782 | |
| 783 | #if STLDEBUG |
| 784 | printf("stlprobe(idp=%x): unit=%d iobase=%x\n", (int) idp, |
| 785 | idp->id_unit, idp->id_iobase); |
| 786 | #endif |
| 787 | |
| 788 | if (idp->id_unit > STL_MAXBRDS) |
| 789 | return(0); |
| 790 | |
| 791 | status = inb(idp->id_iobase + 1); |
| 792 | if ((status & ECH_IDBITMASK) == ECH_ID) { |
| 793 | stl_brdprobed[idp->id_unit] = BRD_ECH; |
| 794 | return(1); |
| 795 | } |
| 796 | |
| 797 | status = inb(idp->id_iobase + 2); |
| 798 | switch (status & EIO_IDBITMASK) { |
| 799 | case EIO_8PORTRS: |
| 800 | case EIO_8PORTM: |
| 801 | case EIO_8PORTDI: |
| 802 | case EIO_4PORTRS: |
| 803 | case EIO_MK3: |
| 804 | stl_brdprobed[idp->id_unit] = BRD_EASYIO; |
| 805 | return(1); |
| 806 | default: |
| 807 | break; |
| 808 | } |
| 809 | |
| 810 | return(0); |
| 811 | } |
| 812 | |
| 813 | /*****************************************************************************/ |
| 814 | |
| 815 | /* |
| 816 | * Find an available internal board number (unit number). The problem |
| 817 | * is that the same unit numbers can be assigned to different boards |
| 818 | * detected during the ISA and PCI initialization phases. |
| 819 | */ |
| 820 | |
| 821 | static int stl_findfreeunit() |
| 822 | { |
| 823 | int i; |
| 824 | |
| 825 | for (i = 0; (i < STL_MAXBRDS); i++) |
| 826 | if (stl_brds[i] == (stlbrd_t *) NULL) |
| 827 | break; |
| 828 | return((i >= STL_MAXBRDS) ? -1 : i); |
| 829 | } |
| 830 | |
| 831 | /*****************************************************************************/ |
| 832 | |
| 833 | /* |
| 834 | * Allocate resources for and initialize the specified board. |
| 835 | */ |
| 836 | |
| 837 | static int stlattach(struct isa_device *idp) |
| 838 | { |
| 839 | stlbrd_t *brdp; |
| 840 | int boardnr, portnr, minor_dev; |
| 841 | |
| 842 | #if STLDEBUG |
| 843 | printf("stlattach(idp=%p): unit=%d iobase=%x\n", (void *) idp, |
| 844 | idp->id_unit, idp->id_iobase); |
| 845 | #endif |
| 846 | |
| 847 | /* idp->id_intr = (inthand2_t *)stlintr; */ |
| 848 | |
| 849 | brdp = kmalloc(sizeof(stlbrd_t), M_TTYS, M_WAITOK | M_ZERO); |
| 850 | |
| 851 | if ((brdp->brdnr = stl_findfreeunit()) < 0) { |
| 852 | printf("STALLION: too many boards found, max=%d\n", |
| 853 | STL_MAXBRDS); |
| 854 | return(0); |
| 855 | } |
| 856 | if (brdp->brdnr >= stl_nrbrds) |
| 857 | stl_nrbrds = brdp->brdnr + 1; |
| 858 | |
| 859 | brdp->unitid = idp->id_unit; |
| 860 | brdp->brdtype = stl_brdprobed[idp->id_unit]; |
| 861 | brdp->ioaddr1 = idp->id_iobase; |
| 862 | brdp->ioaddr2 = stl_ioshared; |
| 863 | brdp->irq = ffs(idp->id_irq) - 1; |
| 864 | brdp->irqtype = stl_irqshared; |
| 865 | stl_brdinit(brdp); |
| 866 | |
| 867 | /* register devices for DEVFS */ |
| 868 | boardnr = brdp->brdnr; |
| 869 | dev_ops_add(&stl_ops, 31, boardnr); |
| 870 | make_dev(&stl_ops, boardnr + 0x1000000, UID_ROOT, GID_WHEEL, |
| 871 | 0600, "staliomem%d", boardnr); |
| 872 | |
| 873 | for (portnr = 0, minor_dev = boardnr * 0x100000; |
| 874 | portnr < 32; portnr++, minor_dev++) { |
| 875 | /* hw ports */ |
| 876 | make_dev(&stl_ops, minor_dev, |
| 877 | UID_ROOT, GID_WHEEL, 0600, |
| 878 | "ttyE%d", portnr + (boardnr * 64)); |
| 879 | make_dev(&stl_ops, minor_dev + 32, |
| 880 | UID_ROOT, GID_WHEEL, 0600, |
| 881 | "ttyiE%d", portnr + (boardnr * 64)); |
| 882 | make_dev(&stl_ops, minor_dev + 64, |
| 883 | UID_ROOT, GID_WHEEL, 0600, |
| 884 | "ttylE%d", portnr + (boardnr * 64)); |
| 885 | make_dev(&stl_ops, minor_dev + 128, |
| 886 | UID_ROOT, GID_WHEEL, 0600, |
| 887 | "cue%d", portnr + (boardnr * 64)); |
| 888 | make_dev(&stl_ops, minor_dev + 160, |
| 889 | UID_ROOT, GID_WHEEL, 0600, |
| 890 | "cuie%d", portnr + (boardnr * 64)); |
| 891 | make_dev(&stl_ops, minor_dev + 192, |
| 892 | UID_ROOT, GID_WHEEL, 0600, |
| 893 | "cule%d", portnr + (boardnr * 64)); |
| 894 | |
| 895 | /* sw ports */ |
| 896 | make_dev(&stl_ops, minor_dev + 0x10000, |
| 897 | UID_ROOT, GID_WHEEL, 0600, |
| 898 | "ttyE%d", portnr + (boardnr * 64) + 32); |
| 899 | make_dev(&stl_ops, minor_dev + 32 + 0x10000, |
| 900 | UID_ROOT, GID_WHEEL, 0600, |
| 901 | "ttyiE%d", portnr + (boardnr * 64) + 32); |
| 902 | make_dev(&stl_ops, minor_dev + 64 + 0x10000, |
| 903 | UID_ROOT, GID_WHEEL, 0600, |
| 904 | "ttylE%d", portnr + (boardnr * 64) + 32); |
| 905 | make_dev(&stl_ops, minor_dev + 128 + 0x10000, |
| 906 | UID_ROOT, GID_WHEEL, 0600, |
| 907 | "cue%d", portnr + (boardnr * 64) + 32); |
| 908 | make_dev(&stl_ops, minor_dev + 160 + 0x10000, |
| 909 | UID_ROOT, GID_WHEEL, 0600, |
| 910 | "cuie%d", portnr + (boardnr * 64) + 32); |
| 911 | make_dev(&stl_ops, minor_dev + 192 + 0x10000, |
| 912 | UID_ROOT, GID_WHEEL, 0600, |
| 913 | "cule%d", portnr + (boardnr * 64) + 32); |
| 914 | } |
| 915 | boardnr = brdp->brdnr; |
| 916 | make_dev(&stl_ops, boardnr + 0x1000000, UID_ROOT, GID_WHEEL, |
| 917 | 0600, "staliomem%d", boardnr); |
| 918 | |
| 919 | for (portnr = 0, minor_dev = boardnr * 0x100000; |
| 920 | portnr < 32; portnr++, minor_dev++) { |
| 921 | /* hw ports */ |
| 922 | make_dev(&stl_ops, minor_dev, |
| 923 | UID_ROOT, GID_WHEEL, 0600, |
| 924 | "ttyE%d", portnr + (boardnr * 64)); |
| 925 | make_dev(&stl_ops, minor_dev + 32, |
| 926 | UID_ROOT, GID_WHEEL, 0600, |
| 927 | "ttyiE%d", portnr + (boardnr * 64)); |
| 928 | make_dev(&stl_ops, minor_dev + 64, |
| 929 | UID_ROOT, GID_WHEEL, 0600, |
| 930 | "ttylE%d", portnr + (boardnr * 64)); |
| 931 | make_dev(&stl_ops, minor_dev + 128, |
| 932 | UID_ROOT, GID_WHEEL, 0600, |
| 933 | "cue%d", portnr + (boardnr * 64)); |
| 934 | make_dev(&stl_ops, minor_dev + 160, |
| 935 | UID_ROOT, GID_WHEEL, 0600, |
| 936 | "cuie%d", portnr + (boardnr * 64)); |
| 937 | make_dev(&stl_ops, minor_dev + 192, |
| 938 | UID_ROOT, GID_WHEEL, 0600, |
| 939 | "cule%d", portnr + (boardnr * 64)); |
| 940 | |
| 941 | /* sw ports */ |
| 942 | make_dev(&stl_ops, minor_dev + 0x10000, |
| 943 | UID_ROOT, GID_WHEEL, 0600, |
| 944 | "ttyE%d", portnr + (boardnr * 64) + 32); |
| 945 | make_dev(&stl_ops, minor_dev + 32 + 0x10000, |
| 946 | UID_ROOT, GID_WHEEL, 0600, |
| 947 | "ttyiE%d", portnr + (boardnr * 64) + 32); |
| 948 | make_dev(&stl_ops, minor_dev + 64 + 0x10000, |
| 949 | UID_ROOT, GID_WHEEL, 0600, |
| 950 | "ttylE%d", portnr + (boardnr * 64) + 32); |
| 951 | make_dev(&stl_ops, minor_dev + 128 + 0x10000, |
| 952 | UID_ROOT, GID_WHEEL, 0600, |
| 953 | "cue%d", portnr + (boardnr * 64) + 32); |
| 954 | make_dev(&stl_ops, minor_dev + 160 + 0x10000, |
| 955 | UID_ROOT, GID_WHEEL, 0600, |
| 956 | "cuie%d", portnr + (boardnr * 64) + 32); |
| 957 | make_dev(&stl_ops, minor_dev + 192 + 0x10000, |
| 958 | UID_ROOT, GID_WHEEL, 0600, |
| 959 | "cule%d", portnr + (boardnr * 64) + 32); |
| 960 | } |
| 961 | |
| 962 | return(1); |
| 963 | } |
| 964 | |
| 965 | /*****************************************************************************/ |
| 966 | |
| 967 | #if NPCI > 0 |
| 968 | |
| 969 | /* |
| 970 | * Probe specifically for the PCI boards. We need to be a little |
| 971 | * carefull here, since it looks sort like a Nat Semi IDE chip... |
| 972 | */ |
| 973 | |
| 974 | static const char *stlpciprobe(pcici_t tag, pcidi_t type) |
| 975 | { |
| 976 | unsigned long class; |
| 977 | int i, brdtype; |
| 978 | |
| 979 | #if STLDEBUG |
| 980 | printf("stlpciprobe(tag=%x,type=%x)\n", (int) &tag, (int) type); |
| 981 | #endif |
| 982 | |
| 983 | brdtype = 0; |
| 984 | for (i = 0; (i < stl_nrpcibrds); i++) { |
| 985 | if (((type & 0xffff) == stl_pcibrds[i].vendid) && |
| 986 | (((type >> 16) & 0xffff) == stl_pcibrds[i].devid)) { |
| 987 | brdtype = stl_pcibrds[i].brdtype; |
| 988 | break; |
| 989 | } |
| 990 | } |
| 991 | |
| 992 | if (brdtype == 0) |
| 993 | return((char *) NULL); |
| 994 | |
| 995 | class = pci_conf_read(tag, PCI_CLASS_REG); |
| 996 | if ((class & PCI_CLASS_MASK) == PCI_CLASS_MASS_STORAGE) |
| 997 | return((char *) NULL); |
| 998 | |
| 999 | return(stl_brdnames[brdtype]); |
| 1000 | } |
| 1001 | |
| 1002 | /*****************************************************************************/ |
| 1003 | |
| 1004 | /* |
| 1005 | * Allocate resources for and initialize the specified PCI board. |
| 1006 | */ |
| 1007 | |
| 1008 | void stlpciattach(pcici_t tag, int unit) |
| 1009 | { |
| 1010 | stlbrd_t *brdp; |
| 1011 | unsigned int bar[4]; |
| 1012 | unsigned int id; |
| 1013 | int i; |
| 1014 | int boardnr, portnr, minor_dev; |
| 1015 | |
| 1016 | #if STLDEBUG |
| 1017 | printf("stlpciattach(tag=%x,unit=%x)\n", (int) &tag, unit); |
| 1018 | #endif |
| 1019 | |
| 1020 | brdp = kmalloc(sizeof(stlbrd_t), M_TTYS, M_WAITOK | M_ZERO); |
| 1021 | |
| 1022 | if ((unit < 0) || (unit > STL_MAXBRDS)) { |
| 1023 | printf("STALLION: bad PCI board unit number=%d\n", unit); |
| 1024 | return; |
| 1025 | } |
| 1026 | |
| 1027 | /* |
| 1028 | * Allocate us a new driver unique unit number. |
| 1029 | */ |
| 1030 | if ((brdp->brdnr = stl_findfreeunit()) < 0) { |
| 1031 | printf("STALLION: too many boards found, max=%d\n", |
| 1032 | STL_MAXBRDS); |
| 1033 | return; |
| 1034 | } |
| 1035 | if (brdp->brdnr >= stl_nrbrds) |
| 1036 | stl_nrbrds = brdp->brdnr + 1; |
| 1037 | |
| 1038 | /* |
| 1039 | * Determine what type of PCI board this is... |
| 1040 | */ |
| 1041 | id = (unsigned int) pci_conf_read(tag, 0x0); |
| 1042 | for (i = 0; (i < stl_nrpcibrds); i++) { |
| 1043 | if (((id & 0xffff) == stl_pcibrds[i].vendid) && |
| 1044 | (((id >> 16) & 0xffff) == stl_pcibrds[i].devid)) { |
| 1045 | brdp->brdtype = stl_pcibrds[i].brdtype; |
| 1046 | break; |
| 1047 | } |
| 1048 | } |
| 1049 | |
| 1050 | if (i >= stl_nrpcibrds) { |
| 1051 | printf("STALLION: probed PCI board unknown type=%x\n", id); |
| 1052 | return; |
| 1053 | } |
| 1054 | |
| 1055 | for (i = 0; (i < 4); i++) |
| 1056 | bar[i] = (unsigned int) pci_conf_read(tag, 0x10 + (i * 4)) & |
| 1057 | 0xfffc; |
| 1058 | |
| 1059 | switch (brdp->brdtype) { |
| 1060 | case BRD_ECH64PCI: |
| 1061 | brdp->ioaddr1 = bar[1]; |
| 1062 | brdp->ioaddr2 = bar[2]; |
| 1063 | break; |
| 1064 | case BRD_EASYIOPCI: |
| 1065 | brdp->ioaddr1 = bar[2]; |
| 1066 | brdp->ioaddr2 = bar[1]; |
| 1067 | break; |
| 1068 | case BRD_ECHPCI: |
| 1069 | brdp->ioaddr1 = bar[1]; |
| 1070 | brdp->ioaddr2 = bar[0]; |
| 1071 | break; |
| 1072 | default: |
| 1073 | printf("STALLION: unknown PCI board type=%d\n", brdp->brdtype); |
| 1074 | return; |
| 1075 | break; |
| 1076 | } |
| 1077 | |
| 1078 | brdp->unitid = brdp->brdnr; /* PCI units auto-assigned */ |
| 1079 | brdp->irq = ((int) pci_conf_read(tag, 0x3c)) & 0xff; |
| 1080 | brdp->irqtype = 0; |
| 1081 | if (pci_map_int(tag, stlpciintr, (void *) NULL) == 0) { |
| 1082 | printf("STALLION: failed to map interrupt irq=%d for unit=%d\n", |
| 1083 | brdp->irq, brdp->brdnr); |
| 1084 | return; |
| 1085 | } |
| 1086 | |
| 1087 | stl_brdinit(brdp); |
| 1088 | |
| 1089 | /* register devices for DEVFS */ |
| 1090 | boardnr = brdp->brdnr; |
| 1091 | make_dev(&stl_ops, boardnr + 0x1000000, UID_ROOT, GID_WHEEL, |
| 1092 | 0600, "staliomem%d", boardnr); |
| 1093 | |
| 1094 | for (portnr = 0, minor_dev = boardnr * 0x100000; |
| 1095 | portnr < 32; portnr++, minor_dev++) { |
| 1096 | /* hw ports */ |
| 1097 | make_dev(&stl_ops, minor_dev, |
| 1098 | UID_ROOT, GID_WHEEL, 0600, |
| 1099 | "ttyE%d", portnr + (boardnr * 64)); |
| 1100 | make_dev(&stl_ops, minor_dev + 32, |
| 1101 | UID_ROOT, GID_WHEEL, 0600, |
| 1102 | "ttyiE%d", portnr + (boardnr * 64)); |
| 1103 | make_dev(&stl_ops, minor_dev + 64, |
| 1104 | UID_ROOT, GID_WHEEL, 0600, |
| 1105 | "ttylE%d", portnr + (boardnr * 64)); |
| 1106 | make_dev(&stl_ops, minor_dev + 128, |
| 1107 | UID_ROOT, GID_WHEEL, 0600, |
| 1108 | "cue%d", portnr + (boardnr * 64)); |
| 1109 | make_dev(&stl_ops, minor_dev + 160, |
| 1110 | UID_ROOT, GID_WHEEL, 0600, |
| 1111 | "cuie%d", portnr + (boardnr * 64)); |
| 1112 | make_dev(&stl_ops, minor_dev + 192, |
| 1113 | UID_ROOT, GID_WHEEL, 0600, |
| 1114 | "cule%d", portnr + (boardnr * 64)); |
| 1115 | |
| 1116 | /* sw ports */ |
| 1117 | make_dev(&stl_ops, minor_dev + 0x10000, |
| 1118 | UID_ROOT, GID_WHEEL, 0600, |
| 1119 | "ttyE%d", portnr + (boardnr * 64) + 32); |
| 1120 | make_dev(&stl_ops, minor_dev + 32 + 0x10000, |
| 1121 | UID_ROOT, GID_WHEEL, 0600, |
| 1122 | "ttyiE%d", portnr + (boardnr * 64) + 32); |
| 1123 | make_dev(&stl_ops, minor_dev + 64 + 0x10000, |
| 1124 | UID_ROOT, GID_WHEEL, 0600, |
| 1125 | "ttylE%d", portnr + (boardnr * 64) + 32); |
| 1126 | make_dev(&stl_ops, minor_dev + 128 + 0x10000, |
| 1127 | UID_ROOT, GID_WHEEL, 0600, |
| 1128 | "cue%d", portnr + (boardnr * 64) + 32); |
| 1129 | make_dev(&stl_ops, minor_dev + 160 + 0x10000, |
| 1130 | UID_ROOT, GID_WHEEL, 0600, |
| 1131 | "cuie%d", portnr + (boardnr * 64) + 32); |
| 1132 | make_dev(&stl_ops, minor_dev + 192 + 0x10000, |
| 1133 | UID_ROOT, GID_WHEEL, 0600, |
| 1134 | "cule%d", portnr + (boardnr * 64) + 32); |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | #endif |
| 1139 | |
| 1140 | /*****************************************************************************/ |
| 1141 | |
| 1142 | STATIC int stlopen(struct dev_open_args *ap) |
| 1143 | { |
| 1144 | cdev_t dev = ap->a_head.a_dev; |
| 1145 | struct tty *tp; |
| 1146 | stlport_t *portp; |
| 1147 | int error, callout; |
| 1148 | |
| 1149 | #if STLDEBUG |
| 1150 | printf("stlopen(dev=%x,flag=%x,mode=%x,p=%x)\n", (int) dev, flag, |
| 1151 | mode, (int) p); |
| 1152 | #endif |
| 1153 | |
| 1154 | /* |
| 1155 | * Firstly check if the supplied device number is a valid device. |
| 1156 | */ |
| 1157 | if (minor(dev) & STL_MEMDEV) |
| 1158 | return(0); |
| 1159 | |
| 1160 | portp = stl_dev2port(dev); |
| 1161 | if (portp == (stlport_t *) NULL) |
| 1162 | return(ENXIO); |
| 1163 | if (minor(dev) & STL_CTRLDEV) |
| 1164 | return(0); |
| 1165 | tp = &portp->tty; |
| 1166 | dev->si_tty = tp; |
| 1167 | callout = minor(dev) & STL_CALLOUTDEV; |
| 1168 | error = 0; |
| 1169 | |
| 1170 | crit_enter(); |
| 1171 | |
| 1172 | stlopen_restart: |
| 1173 | /* |
| 1174 | * Wait here for the DTR drop timeout period to expire. |
| 1175 | */ |
| 1176 | while (portp->state & ASY_DTRWAIT) { |
| 1177 | error = tsleep(&portp->dtrwait, PCATCH, "stldtr", 0); |
| 1178 | if (error) |
| 1179 | goto stlopen_end; |
| 1180 | } |
| 1181 | |
| 1182 | /* |
| 1183 | * We have a valid device, so now we check if it is already open. |
| 1184 | * If not then initialize the port hardware and set up the tty |
| 1185 | * struct as required. |
| 1186 | */ |
| 1187 | if ((tp->t_state & TS_ISOPEN) == 0) { |
| 1188 | tp->t_oproc = stl_start; |
| 1189 | tp->t_stop = stl_stop; |
| 1190 | tp->t_param = stl_param; |
| 1191 | tp->t_dev = dev; |
| 1192 | tp->t_termios = callout ? portp->initouttios : |
| 1193 | portp->initintios; |
| 1194 | stl_rawopen(portp); |
| 1195 | ttsetwater(tp); |
| 1196 | if ((portp->sigs & TIOCM_CD) || callout) |
| 1197 | (*linesw[tp->t_line].l_modem)(tp, 1); |
| 1198 | } else { |
| 1199 | if (callout) { |
| 1200 | if (portp->callout == 0) { |
| 1201 | error = EBUSY; |
| 1202 | goto stlopen_end; |
| 1203 | } |
| 1204 | } else { |
| 1205 | if (portp->callout != 0) { |
| 1206 | if (ap->a_oflags & O_NONBLOCK) { |
| 1207 | error = EBUSY; |
| 1208 | goto stlopen_end; |
| 1209 | } |
| 1210 | error = tsleep(&portp->callout, |
| 1211 | PCATCH, "stlcall", 0); |
| 1212 | if (error) |
| 1213 | goto stlopen_end; |
| 1214 | goto stlopen_restart; |
| 1215 | } |
| 1216 | } |
| 1217 | if ((tp->t_state & TS_XCLUDE) && suser_cred(ap->a_cred, 0)) { |
| 1218 | error = EBUSY; |
| 1219 | goto stlopen_end; |
| 1220 | } |
| 1221 | } |
| 1222 | |
| 1223 | /* |
| 1224 | * If this port is not the callout device and we do not have carrier |
| 1225 | * then we need to sleep, waiting for it to be asserted. |
| 1226 | */ |
| 1227 | if (((tp->t_state & TS_CARR_ON) == 0) && !callout && |
| 1228 | ((tp->t_cflag & CLOCAL) == 0) && |
| 1229 | ((ap->a_oflags & O_NONBLOCK) == 0)) { |
| 1230 | portp->waitopens++; |
| 1231 | error = tsleep(TSA_CARR_ON(tp), PCATCH, "stldcd", 0); |
| 1232 | portp->waitopens--; |
| 1233 | if (error) |
| 1234 | goto stlopen_end; |
| 1235 | goto stlopen_restart; |
| 1236 | } |
| 1237 | |
| 1238 | /* |
| 1239 | * Open the line discipline. |
| 1240 | */ |
| 1241 | error = (*linesw[tp->t_line].l_open)(dev, tp); |
| 1242 | stl_ttyoptim(portp, &tp->t_termios); |
| 1243 | if ((tp->t_state & TS_ISOPEN) && callout) |
| 1244 | portp->callout = 1; |
| 1245 | |
| 1246 | /* |
| 1247 | * If for any reason we get to here and the port is not actually |
| 1248 | * open then close of the physical hardware - no point leaving it |
| 1249 | * active when the open failed... |
| 1250 | */ |
| 1251 | stlopen_end: |
| 1252 | crit_exit(); |
| 1253 | if (((tp->t_state & TS_ISOPEN) == 0) && (portp->waitopens == 0)) |
| 1254 | stl_rawclose(portp); |
| 1255 | |
| 1256 | return(error); |
| 1257 | } |
| 1258 | |
| 1259 | /*****************************************************************************/ |
| 1260 | |
| 1261 | STATIC int stlclose(struct dev_close_args *ap) |
| 1262 | { |
| 1263 | cdev_t dev = ap->a_head.a_dev; |
| 1264 | struct tty *tp; |
| 1265 | stlport_t *portp; |
| 1266 | |
| 1267 | #if STLDEBUG |
| 1268 | printf("stlclose(dev=%s,flag=%x,mode=%x,p=%p)\n", devtoname(dev), |
| 1269 | flag, mode, (void *) p); |
| 1270 | #endif |
| 1271 | |
| 1272 | if (minor(dev) & STL_MEMDEV) |
| 1273 | return(0); |
| 1274 | if (minor(dev) & STL_CTRLDEV) |
| 1275 | return(0); |
| 1276 | |
| 1277 | portp = stl_dev2port(dev); |
| 1278 | if (portp == (stlport_t *) NULL) |
| 1279 | return(ENXIO); |
| 1280 | tp = &portp->tty; |
| 1281 | |
| 1282 | crit_enter(); |
| 1283 | (*linesw[tp->t_line].l_close)(tp, ap->a_fflag); |
| 1284 | stl_ttyoptim(portp, &tp->t_termios); |
| 1285 | stl_rawclose(portp); |
| 1286 | ttyclose(tp); |
| 1287 | crit_exit(); |
| 1288 | return(0); |
| 1289 | } |
| 1290 | |
| 1291 | /*****************************************************************************/ |
| 1292 | |
| 1293 | #if VFREEBSD >= 220 |
| 1294 | |
| 1295 | STATIC void stl_stop(struct tty *tp, int rw) |
| 1296 | { |
| 1297 | #if STLDEBUG |
| 1298 | printf("stl_stop(tp=%x,rw=%x)\n", (int) tp, rw); |
| 1299 | #endif |
| 1300 | |
| 1301 | stl_flush((stlport_t *) tp, rw); |
| 1302 | } |
| 1303 | |
| 1304 | #else |
| 1305 | |
| 1306 | STATIC int stlstop(struct tty *tp, int rw) |
| 1307 | { |
| 1308 | #if STLDEBUG |
| 1309 | printf("stlstop(tp=%x,rw=%x)\n", (int) tp, rw); |
| 1310 | #endif |
| 1311 | |
| 1312 | stl_flush((stlport_t *) tp, rw); |
| 1313 | return(0); |
| 1314 | } |
| 1315 | |
| 1316 | #endif |
| 1317 | |
| 1318 | /*****************************************************************************/ |
| 1319 | |
| 1320 | STATIC int stlioctl(struct dev_ioctl_args *ap) |
| 1321 | { |
| 1322 | cdev_t dev = ap->a_head.a_dev; |
| 1323 | u_long cmd = ap->a_cmd; |
| 1324 | caddr_t data = ap->a_data; |
| 1325 | struct termios *newtios, *localtios; |
| 1326 | struct tty *tp; |
| 1327 | stlport_t *portp; |
| 1328 | int error, i; |
| 1329 | |
| 1330 | #if STLDEBUG |
| 1331 | printf("stlioctl(dev=%s,cmd=%lx,data=%p,flag=%x)\n", |
| 1332 | devtoname(dev), cmd, (void *) data, ap->a_fflag); |
| 1333 | #endif |
| 1334 | |
| 1335 | if (minor(dev) & STL_MEMDEV) |
| 1336 | return(stl_memioctl(dev, cmd, data, ap->a_fflag)); |
| 1337 | |
| 1338 | portp = stl_dev2port(dev); |
| 1339 | if (portp == (stlport_t *) NULL) |
| 1340 | return(ENODEV); |
| 1341 | tp = &portp->tty; |
| 1342 | error = 0; |
| 1343 | |
| 1344 | /* |
| 1345 | * First up handle ioctls on the control devices. |
| 1346 | */ |
| 1347 | if (minor(dev) & STL_CTRLDEV) { |
| 1348 | if ((minor(dev) & STL_CTRLDEV) == STL_CTRLINIT) |
| 1349 | localtios = (minor(dev) & STL_CALLOUTDEV) ? |
| 1350 | &portp->initouttios : &portp->initintios; |
| 1351 | else if ((minor(dev) & STL_CTRLDEV) == STL_CTRLLOCK) |
| 1352 | localtios = (minor(dev) & STL_CALLOUTDEV) ? |
| 1353 | &portp->lockouttios : &portp->lockintios; |
| 1354 | else |
| 1355 | return(ENODEV); |
| 1356 | |
| 1357 | switch (cmd) { |
| 1358 | case TIOCSETA: |
| 1359 | if ((error = suser_cred(ap->a_cred, 0)) == 0) |
| 1360 | *localtios = *((struct termios *) data); |
| 1361 | break; |
| 1362 | case TIOCGETA: |
| 1363 | *((struct termios *) data) = *localtios; |
| 1364 | break; |
| 1365 | case TIOCGETD: |
| 1366 | *((int *) data) = TTYDISC; |
| 1367 | break; |
| 1368 | case TIOCGWINSZ: |
| 1369 | bzero(data, sizeof(struct winsize)); |
| 1370 | break; |
| 1371 | default: |
| 1372 | error = ENOTTY; |
| 1373 | break; |
| 1374 | } |
| 1375 | return(error); |
| 1376 | } |
| 1377 | |
| 1378 | /* |
| 1379 | * Deal with 4.3 compatibility issues if we have too... |
| 1380 | */ |
| 1381 | #if defined(COMPAT_43) || defined(COMPAT_SUNOS) |
| 1382 | if (1) { |
| 1383 | struct termios tios; |
| 1384 | unsigned long oldcmd; |
| 1385 | |
| 1386 | tios = tp->t_termios; |
| 1387 | oldcmd = cmd; |
| 1388 | if ((error = ttsetcompat(tp, &cmd, data, &tios))) |
| 1389 | return(error); |
| 1390 | if (cmd != oldcmd) |
| 1391 | data = (caddr_t) &tios; |
| 1392 | } |
| 1393 | #endif |
| 1394 | |
| 1395 | /* |
| 1396 | * Carry out some pre-cmd processing work first... |
| 1397 | * Hmmm, not so sure we want this, disable for now... |
| 1398 | */ |
| 1399 | if ((cmd == TIOCSETA) || (cmd == TIOCSETAW) || (cmd == TIOCSETAF)) { |
| 1400 | newtios = (struct termios *) data; |
| 1401 | localtios = (minor(dev) & STL_CALLOUTDEV) ? |
| 1402 | &portp->lockouttios : &portp->lockintios; |
| 1403 | |
| 1404 | newtios->c_iflag = (tp->t_iflag & localtios->c_iflag) | |
| 1405 | (newtios->c_iflag & ~localtios->c_iflag); |
| 1406 | newtios->c_oflag = (tp->t_oflag & localtios->c_oflag) | |
| 1407 | (newtios->c_oflag & ~localtios->c_oflag); |
| 1408 | newtios->c_cflag = (tp->t_cflag & localtios->c_cflag) | |
| 1409 | (newtios->c_cflag & ~localtios->c_cflag); |
| 1410 | newtios->c_lflag = (tp->t_lflag & localtios->c_lflag) | |
| 1411 | (newtios->c_lflag & ~localtios->c_lflag); |
| 1412 | for (i = 0; (i < NCCS); i++) { |
| 1413 | if (localtios->c_cc[i] != 0) |
| 1414 | newtios->c_cc[i] = tp->t_cc[i]; |
| 1415 | } |
| 1416 | if (localtios->c_ispeed != 0) |
| 1417 | newtios->c_ispeed = tp->t_ispeed; |
| 1418 | if (localtios->c_ospeed != 0) |
| 1419 | newtios->c_ospeed = tp->t_ospeed; |
| 1420 | } |
| 1421 | |
| 1422 | /* |
| 1423 | * Call the line discipline and the common command processing to |
| 1424 | * process this command (if they can). |
| 1425 | */ |
| 1426 | error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, |
| 1427 | ap->a_fflag, ap->a_cred); |
| 1428 | if (error != ENOIOCTL) |
| 1429 | return(error); |
| 1430 | |
| 1431 | crit_enter(); |
| 1432 | error = ttioctl(tp, cmd, data, ap->a_fflag); |
| 1433 | stl_ttyoptim(portp, &tp->t_termios); |
| 1434 | if (error != ENOIOCTL) { |
| 1435 | crit_exit(); |
| 1436 | return(error); |
| 1437 | } |
| 1438 | |
| 1439 | error = 0; |
| 1440 | |
| 1441 | /* |
| 1442 | * Process local commands here. These are all commands that only we |
| 1443 | * can take care of (they all rely on actually doing something special |
| 1444 | * to the actual hardware). |
| 1445 | */ |
| 1446 | switch (cmd) { |
| 1447 | case TIOCSBRK: |
| 1448 | stl_sendbreak(portp, -1); |
| 1449 | break; |
| 1450 | case TIOCCBRK: |
| 1451 | stl_sendbreak(portp, -2); |
| 1452 | break; |
| 1453 | case TIOCSDTR: |
| 1454 | stl_setsignals(portp, 1, -1); |
| 1455 | break; |
| 1456 | case TIOCCDTR: |
| 1457 | stl_setsignals(portp, 0, -1); |
| 1458 | break; |
| 1459 | case TIOCMSET: |
| 1460 | i = *((int *) data); |
| 1461 | stl_setsignals(portp, ((i & TIOCM_DTR) ? 1 : 0), |
| 1462 | ((i & TIOCM_RTS) ? 1 : 0)); |
| 1463 | break; |
| 1464 | case TIOCMBIS: |
| 1465 | i = *((int *) data); |
| 1466 | stl_setsignals(portp, ((i & TIOCM_DTR) ? 1 : -1), |
| 1467 | ((i & TIOCM_RTS) ? 1 : -1)); |
| 1468 | break; |
| 1469 | case TIOCMBIC: |
| 1470 | i = *((int *) data); |
| 1471 | stl_setsignals(portp, ((i & TIOCM_DTR) ? 0 : -1), |
| 1472 | ((i & TIOCM_RTS) ? 0 : -1)); |
| 1473 | break; |
| 1474 | case TIOCMGET: |
| 1475 | *((int *) data) = (stl_getsignals(portp) | TIOCM_LE); |
| 1476 | break; |
| 1477 | case TIOCMSDTRWAIT: |
| 1478 | if ((error = suser_cred(ap->a_cred, 0)) == 0) |
| 1479 | portp->dtrwait = *((int *) data) * hz / 100; |
| 1480 | break; |
| 1481 | case TIOCMGDTRWAIT: |
| 1482 | *((int *) data) = portp->dtrwait * 100 / hz; |
| 1483 | break; |
| 1484 | case TIOCTIMESTAMP: |
| 1485 | portp->dotimestamp = 1; |
| 1486 | *((struct timeval *) data) = portp->timestamp; |
| 1487 | break; |
| 1488 | default: |
| 1489 | error = ENOTTY; |
| 1490 | break; |
| 1491 | } |
| 1492 | crit_exit(); |
| 1493 | |
| 1494 | return(error); |
| 1495 | } |
| 1496 | /*****************************************************************************/ |
| 1497 | |
| 1498 | /* |
| 1499 | * Convert the specified minor device number into a port struct |
| 1500 | * pointer. Return NULL if the device number is not a valid port. |
| 1501 | */ |
| 1502 | |
| 1503 | STATIC stlport_t *stl_dev2port(cdev_t dev) |
| 1504 | { |
| 1505 | stlbrd_t *brdp; |
| 1506 | |
| 1507 | brdp = stl_brds[MKDEV2BRD(dev)]; |
| 1508 | if (brdp == (stlbrd_t *) NULL) |
| 1509 | return((stlport_t *) NULL); |
| 1510 | return(brdp->ports[MKDEV2PORT(dev)]); |
| 1511 | } |
| 1512 | |
| 1513 | /*****************************************************************************/ |
| 1514 | |
| 1515 | /* |
| 1516 | * Initialize the port hardware. This involves enabling the transmitter |
| 1517 | * and receiver, setting the port configuration, and setting the initial |
| 1518 | * signal state. |
| 1519 | */ |
| 1520 | |
| 1521 | static int stl_rawopen(stlport_t *portp) |
| 1522 | { |
| 1523 | #if STLDEBUG |
| 1524 | printf("stl_rawopen(portp=%p): brdnr=%d panelnr=%d portnr=%d\n", |
| 1525 | (void *) portp, portp->brdnr, portp->panelnr, portp->portnr); |
| 1526 | #endif |
| 1527 | |
| 1528 | stl_setport(portp, &portp->tty.t_termios); |
| 1529 | portp->sigs = stl_getsignals(portp); |
| 1530 | stl_setsignals(portp, 1, 1); |
| 1531 | stl_enablerxtx(portp, 1, 1); |
| 1532 | stl_startrxtx(portp, 1, 0); |
| 1533 | return(0); |
| 1534 | } |
| 1535 | |
| 1536 | /*****************************************************************************/ |
| 1537 | |
| 1538 | /* |
| 1539 | * Shutdown the hardware of a port. Disable its transmitter and |
| 1540 | * receiver, and maybe drop signals if appropriate. |
| 1541 | */ |
| 1542 | |
| 1543 | static int stl_rawclose(stlport_t *portp) |
| 1544 | { |
| 1545 | struct tty *tp; |
| 1546 | |
| 1547 | #if STLDEBUG |
| 1548 | printf("stl_rawclose(portp=%p): brdnr=%d panelnr=%d portnr=%d\n", |
| 1549 | (void *) portp, portp->brdnr, portp->panelnr, portp->portnr); |
| 1550 | #endif |
| 1551 | |
| 1552 | tp = &portp->tty; |
| 1553 | stl_disableintrs(portp); |
| 1554 | stl_enablerxtx(portp, 0, 0); |
| 1555 | stl_flush(portp, (FWRITE | FREAD)); |
| 1556 | if (tp->t_cflag & HUPCL) { |
| 1557 | stl_setsignals(portp, 0, 0); |
| 1558 | if (portp->dtrwait != 0) { |
| 1559 | portp->state |= ASY_DTRWAIT; |
| 1560 | callout_reset(&portp->dtr_ch, portp->dtrwait, |
| 1561 | stl_dtrwakeup, portp); |
| 1562 | } |
| 1563 | } |
| 1564 | portp->callout = 0; |
| 1565 | portp->brklen = 0; |
| 1566 | portp->state &= ~(ASY_ACTIVE | ASY_RTSFLOW); |
| 1567 | wakeup(&portp->callout); |
| 1568 | wakeup(TSA_CARR_ON(tp)); |
| 1569 | return(0); |
| 1570 | } |
| 1571 | |
| 1572 | /*****************************************************************************/ |
| 1573 | |
| 1574 | /* |
| 1575 | * Clear the DTR waiting flag, and wake up any sleepers waiting for |
| 1576 | * DTR wait period to finish. |
| 1577 | */ |
| 1578 | |
| 1579 | static void stl_dtrwakeup(void *arg) |
| 1580 | { |
| 1581 | stlport_t *portp; |
| 1582 | |
| 1583 | portp = (stlport_t *) arg; |
| 1584 | portp->state &= ~ASY_DTRWAIT; |
| 1585 | wakeup(&portp->dtrwait); |
| 1586 | } |
| 1587 | |
| 1588 | /*****************************************************************************/ |
| 1589 | |
| 1590 | /* |
| 1591 | * Start (or continue) the transfer of TX data on this port. If the |
| 1592 | * port is not currently busy then load up the interrupt ring queue |
| 1593 | * buffer and kick of the transmitter. If the port is running low on |
| 1594 | * TX data then refill the ring queue. This routine is also used to |
| 1595 | * activate input flow control! |
| 1596 | */ |
| 1597 | |
| 1598 | static void stl_start(struct tty *tp) |
| 1599 | { |
| 1600 | stlport_t *portp; |
| 1601 | unsigned int len, stlen; |
| 1602 | char *head, *tail; |
| 1603 | int count; |
| 1604 | |
| 1605 | portp = (stlport_t *) tp; |
| 1606 | |
| 1607 | #if STLDEBUG |
| 1608 | printf("stl_start(tp=%x): brdnr=%d portnr=%d\n", (int) tp, |
| 1609 | portp->brdnr, portp->portnr); |
| 1610 | #endif |
| 1611 | |
| 1612 | crit_enter(); |
| 1613 | |
| 1614 | /* |
| 1615 | * Check if the ports input has been blocked, and take appropriate action. |
| 1616 | * Not very often do we really need to do anything, so make it quick. |
| 1617 | */ |
| 1618 | if (tp->t_state & TS_TBLOCK) { |
| 1619 | if ((portp->state & ASY_RTSFLOWMODE) && |
| 1620 | ((portp->state & ASY_RTSFLOW) == 0)) |
| 1621 | stl_flowcontrol(portp, 0, -1); |
| 1622 | } else { |
| 1623 | if (portp->state & ASY_RTSFLOW) |
| 1624 | stl_flowcontrol(portp, 1, -1); |
| 1625 | } |
| 1626 | |
| 1627 | #if VFREEBSD == 205 |
| 1628 | /* |
| 1629 | * Check if the output cooked clist buffers are near empty, wake up |
| 1630 | * the line discipline to fill it up. |
| 1631 | */ |
| 1632 | if (tp->t_outq.c_cc <= tp->t_lowat) { |
| 1633 | if (tp->t_state & TS_ASLEEP) { |
| 1634 | tp->t_state &= ~TS_ASLEEP; |
| 1635 | wakeup(&tp->t_outq); |
| 1636 | } |
| 1637 | selwakeup(&tp->t_wsel); |
| 1638 | } |
| 1639 | #endif |
| 1640 | |
| 1641 | if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) { |
| 1642 | crit_exit(); |
| 1643 | return; |
| 1644 | } |
| 1645 | |
| 1646 | /* |
| 1647 | * Copy data from the clists into the interrupt ring queue. This will |
| 1648 | * require at most 2 copys... What we do is calculate how many chars |
| 1649 | * can fit into the ring queue, and how many can fit in 1 copy. If after |
| 1650 | * the first copy there is still more room then do the second copy. |
| 1651 | * The beauty of this type of ring queue is that we do not need to |
| 1652 | * spl protect our-selves, since we only ever update the head pointer, |
| 1653 | * and the interrupt routine only ever updates the tail pointer. |
| 1654 | */ |
| 1655 | if (tp->t_outq.c_cc != 0) { |
| 1656 | head = portp->tx.head; |
| 1657 | tail = portp->tx.tail; |
| 1658 | if (head >= tail) { |
| 1659 | len = STL_TXBUFSIZE - (head - tail) - 1; |
| 1660 | stlen = portp->tx.endbuf - head; |
| 1661 | } else { |
| 1662 | len = tail - head - 1; |
| 1663 | stlen = len; |
| 1664 | } |
| 1665 | |
| 1666 | if (len > 0) { |
| 1667 | stlen = MIN(len, stlen); |
| 1668 | count = q_to_b(&tp->t_outq, head, stlen); |
| 1669 | len -= count; |
| 1670 | head += count; |
| 1671 | if (head >= portp->tx.endbuf) { |
| 1672 | head = portp->tx.buf; |
| 1673 | if (len > 0) { |
| 1674 | stlen = q_to_b(&tp->t_outq, head, len); |
| 1675 | head += stlen; |
| 1676 | count += stlen; |
| 1677 | } |
| 1678 | } |
| 1679 | portp->tx.head = head; |
| 1680 | if (count > 0) |
| 1681 | stl_startrxtx(portp, -1, 1); |
| 1682 | } |
| 1683 | |
| 1684 | /* |
| 1685 | * If we sent something, make sure we are called again. |
| 1686 | */ |
| 1687 | tp->t_state |= TS_BUSY; |
| 1688 | } |
| 1689 | |
| 1690 | #if VFREEBSD != 205 |
| 1691 | /* |
| 1692 | * Do any writer wakeups. |
| 1693 | */ |
| 1694 | ttwwakeup(tp); |
| 1695 | #endif |
| 1696 | |
| 1697 | crit_exit(); |
| 1698 | } |
| 1699 | |
| 1700 | /*****************************************************************************/ |
| 1701 | |
| 1702 | static void stl_flush(stlport_t *portp, int flag) |
| 1703 | { |
| 1704 | char *head, *tail; |
| 1705 | int len; |
| 1706 | |
| 1707 | #if STLDEBUG |
| 1708 | printf("stl_flush(portp=%x,flag=%x)\n", (int) portp, flag); |
| 1709 | #endif |
| 1710 | |
| 1711 | if (portp == (stlport_t *) NULL) |
| 1712 | return; |
| 1713 | |
| 1714 | crit_enter(); |
| 1715 | |
| 1716 | if (flag & FWRITE) { |
| 1717 | stl_uartflush(portp, FWRITE); |
| 1718 | portp->tx.tail = portp->tx.head; |
| 1719 | } |
| 1720 | |
| 1721 | /* |
| 1722 | * The only thing to watch out for when flushing the read side is |
| 1723 | * the RX status buffer. The interrupt code relys on the status |
| 1724 | * bytes as being zeroed all the time (it does not bother setting |
| 1725 | * a good char status to 0, it expects that it already will be). |
| 1726 | * We also need to un-flow the RX channel if flow control was |
| 1727 | * active. |
| 1728 | */ |
| 1729 | if (flag & FREAD) { |
| 1730 | head = portp->rx.head; |
| 1731 | tail = portp->rx.tail; |
| 1732 | if (head != tail) { |
| 1733 | if (head >= tail) { |
| 1734 | len = head - tail; |
| 1735 | } else { |
| 1736 | len = portp->rx.endbuf - tail; |
| 1737 | bzero(portp->rxstatus.buf, |
| 1738 | (head - portp->rx.buf)); |
| 1739 | } |
| 1740 | bzero((tail + STL_RXBUFSIZE), len); |
| 1741 | portp->rx.tail = head; |
| 1742 | } |
| 1743 | |
| 1744 | if ((portp->state & ASY_RTSFLOW) && |
| 1745 | ((portp->tty.t_state & TS_TBLOCK) == 0)) |
| 1746 | stl_flowcontrol(portp, 1, -1); |
| 1747 | } |
| 1748 | |
| 1749 | crit_exit(); |
| 1750 | } |
| 1751 | |
| 1752 | /*****************************************************************************/ |
| 1753 | |
| 1754 | /* |
| 1755 | * Interrupt handler for host based boards. Interrupts for all boards |
| 1756 | * are vectored through here. |
| 1757 | */ |
| 1758 | |
| 1759 | void stlintr(void *arg) |
| 1760 | { |
| 1761 | stlbrd_t *brdp; |
| 1762 | int i; |
| 1763 | |
| 1764 | #if STLDEBUG |
| 1765 | printf("stlintr(unit=%d)\n", (int)arg); |
| 1766 | #endif |
| 1767 | |
| 1768 | for (i = 0; (i < stl_nrbrds); i++) { |
| 1769 | if ((brdp = stl_brds[i]) == (stlbrd_t *) NULL) |
| 1770 | continue; |
| 1771 | if (brdp->state == 0) |
| 1772 | continue; |
| 1773 | (* brdp->isr)(brdp); |
| 1774 | } |
| 1775 | } |
| 1776 | |
| 1777 | /*****************************************************************************/ |
| 1778 | |
| 1779 | #if NPCI > 0 |
| 1780 | |
| 1781 | static void stlpciintr(void *arg) |
| 1782 | { |
| 1783 | stlintr((void *)0); |
| 1784 | } |
| 1785 | |
| 1786 | #endif |
| 1787 | |
| 1788 | /*****************************************************************************/ |
| 1789 | |
| 1790 | /* |
| 1791 | * Interrupt service routine for EasyIO boards. |
| 1792 | */ |
| 1793 | |
| 1794 | static void stl_eiointr(stlbrd_t *brdp) |
| 1795 | { |
| 1796 | stlpanel_t *panelp; |
| 1797 | int iobase; |
| 1798 | |
| 1799 | #if STLDEBUG |
| 1800 | printf("stl_eiointr(brdp=%p)\n", brdp); |
| 1801 | #endif |
| 1802 | |
| 1803 | panelp = (stlpanel_t *) brdp->panels[0]; |
| 1804 | iobase = panelp->iobase; |
| 1805 | while (inb(brdp->iostatus) & EIO_INTRPEND) |
| 1806 | (* panelp->isr)(panelp, iobase); |
| 1807 | } |
| 1808 | |
| 1809 | /* |
| 1810 | * Interrupt service routine for ECH-AT board types. |
| 1811 | */ |
| 1812 | |
| 1813 | static void stl_echatintr(stlbrd_t *brdp) |
| 1814 | { |
| 1815 | stlpanel_t *panelp; |
| 1816 | unsigned int ioaddr; |
| 1817 | int bnknr; |
| 1818 | |
| 1819 | outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDENABLE)); |
| 1820 | |
| 1821 | while (inb(brdp->iostatus) & ECH_INTRPEND) { |
| 1822 | for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) { |
| 1823 | ioaddr = brdp->bnkstataddr[bnknr]; |
| 1824 | if (inb(ioaddr) & ECH_PNLINTRPEND) { |
| 1825 | panelp = brdp->bnk2panel[bnknr]; |
| 1826 | (* panelp->isr)(panelp, (ioaddr & 0xfffc)); |
| 1827 | } |
| 1828 | } |
| 1829 | } |
| 1830 | |
| 1831 | outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDDISABLE)); |
| 1832 | } |
| 1833 | |
| 1834 | /*****************************************************************************/ |
| 1835 | |
| 1836 | /* |
| 1837 | * Interrupt service routine for ECH-MCA board types. |
| 1838 | */ |
| 1839 | |
| 1840 | static void stl_echmcaintr(stlbrd_t *brdp) |
| 1841 | { |
| 1842 | stlpanel_t *panelp; |
| 1843 | unsigned int ioaddr; |
| 1844 | int bnknr; |
| 1845 | |
| 1846 | while (inb(brdp->iostatus) & ECH_INTRPEND) { |
| 1847 | for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) { |
| 1848 | ioaddr = brdp->bnkstataddr[bnknr]; |
| 1849 | if (inb(ioaddr) & ECH_PNLINTRPEND) { |
| 1850 | panelp = brdp->bnk2panel[bnknr]; |
| 1851 | (* panelp->isr)(panelp, (ioaddr & 0xfffc)); |
| 1852 | } |
| 1853 | } |
| 1854 | } |
| 1855 | } |
| 1856 | |
| 1857 | /*****************************************************************************/ |
| 1858 | |
| 1859 | /* |
| 1860 | * Interrupt service routine for ECH-PCI board types. |
| 1861 | */ |
| 1862 | |
| 1863 | static void stl_echpciintr(stlbrd_t *brdp) |
| 1864 | { |
| 1865 | stlpanel_t *panelp; |
| 1866 | unsigned int ioaddr; |
| 1867 | int bnknr, recheck; |
| 1868 | |
| 1869 | #if STLDEBUG |
| 1870 | printf("stl_echpciintr(brdp=%x)\n", (int) brdp); |
| 1871 | #endif |
| 1872 | |
| 1873 | for (;;) { |
| 1874 | recheck = 0; |
| 1875 | for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) { |
| 1876 | outb(brdp->ioctrl, brdp->bnkpageaddr[bnknr]); |
| 1877 | ioaddr = brdp->bnkstataddr[bnknr]; |
| 1878 | if (inb(ioaddr) & ECH_PNLINTRPEND) { |
| 1879 | panelp = brdp->bnk2panel[bnknr]; |
| 1880 | (* panelp->isr)(panelp, (ioaddr & 0xfffc)); |
| 1881 | recheck++; |
| 1882 | } |
| 1883 | } |
| 1884 | if (! recheck) |
| 1885 | break; |
| 1886 | } |
| 1887 | } |
| 1888 | |
| 1889 | /*****************************************************************************/ |
| 1890 | |
| 1891 | /* |
| 1892 | * Interrupt service routine for EC8/64-PCI board types. |
| 1893 | */ |
| 1894 | |
| 1895 | static void stl_echpci64intr(stlbrd_t *brdp) |
| 1896 | { |
| 1897 | stlpanel_t *panelp; |
| 1898 | unsigned int ioaddr; |
| 1899 | int bnknr; |
| 1900 | |
| 1901 | #if STLDEBUG |
| 1902 | printf("stl_echpci64intr(brdp=%p)\n", brdp); |
| 1903 | #endif |
| 1904 | |
| 1905 | while (inb(brdp->ioctrl) & 0x1) { |
| 1906 | for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) { |
| 1907 | ioaddr = brdp->bnkstataddr[bnknr]; |
| 1908 | #if STLDEBUG |
| 1909 | printf(" --> ioaddr=%x status=%x(%x)\n", ioaddr, inb(ioaddr) & ECH_PNLINTRPEND, inb(ioaddr)); |
| 1910 | #endif |
| 1911 | if (inb(ioaddr) & ECH_PNLINTRPEND) { |
| 1912 | panelp = brdp->bnk2panel[bnknr]; |
| 1913 | (* panelp->isr)(panelp, (ioaddr & 0xfffc)); |
| 1914 | } |
| 1915 | } |
| 1916 | } |
| 1917 | } |
| 1918 | |
| 1919 | /*****************************************************************************/ |
| 1920 | |
| 1921 | /* |
| 1922 | * If we haven't scheduled a timeout then do it, some port needs high |
| 1923 | * level processing. |
| 1924 | */ |
| 1925 | |
| 1926 | static void stl_dotimeout() |
| 1927 | { |
| 1928 | #if STLDEBUG |
| 1929 | printf("stl_dotimeout()\n"); |
| 1930 | #endif |
| 1931 | if (stl_doingtimeout == 0) { |
| 1932 | if ((stl_poll_ch.c_flags & CALLOUT_DID_INIT) == 0) |
| 1933 | callout_init(&stl_poll_ch); |
| 1934 | callout_reset(&stl_poll_ch, 1, stl_poll, NULL); |
| 1935 | stl_doingtimeout++; |
| 1936 | } |
| 1937 | } |
| 1938 | |
| 1939 | /*****************************************************************************/ |
| 1940 | |
| 1941 | /* |
| 1942 | * Service "software" level processing. Too slow or painfull to be done |
| 1943 | * at real hardware interrupt time. This way we might also be able to |
| 1944 | * do some service on other waiting ports as well... |
| 1945 | */ |
| 1946 | |
| 1947 | static void stl_poll(void *arg) |
| 1948 | { |
| 1949 | stlbrd_t *brdp; |
| 1950 | stlport_t *portp; |
| 1951 | struct tty *tp; |
| 1952 | int brdnr, portnr, rearm; |
| 1953 | |
| 1954 | #if STLDEBUG |
| 1955 | printf("stl_poll()\n"); |
| 1956 | #endif |
| 1957 | |
| 1958 | stl_doingtimeout = 0; |
| 1959 | rearm = 0; |
| 1960 | |
| 1961 | crit_enter(); |
| 1962 | for (brdnr = 0; (brdnr < stl_nrbrds); brdnr++) { |
| 1963 | if ((brdp = stl_brds[brdnr]) == (stlbrd_t *) NULL) |
| 1964 | continue; |
| 1965 | for (portnr = 0; (portnr < brdp->nrports); portnr++) { |
| 1966 | if ((portp = brdp->ports[portnr]) == (stlport_t *) NULL) |
| 1967 | continue; |
| 1968 | if ((portp->state & ASY_ACTIVE) == 0) |
| 1969 | continue; |
| 1970 | tp = &portp->tty; |
| 1971 | |
| 1972 | if (portp->state & ASY_RXDATA) |
| 1973 | stl_rxprocess(portp); |
| 1974 | if (portp->state & ASY_DCDCHANGE) { |
| 1975 | portp->state &= ~ASY_DCDCHANGE; |
| 1976 | portp->sigs = stl_getsignals(portp); |
| 1977 | (*linesw[tp->t_line].l_modem)(tp, |
| 1978 | (portp->sigs & TIOCM_CD)); |
| 1979 | } |
| 1980 | if (portp->state & ASY_TXEMPTY) { |
| 1981 | if (stl_datastate(portp) == 0) { |
| 1982 | portp->state &= ~ASY_TXEMPTY; |
| 1983 | tp->t_state &= ~TS_BUSY; |
| 1984 | (*linesw[tp->t_line].l_start)(tp); |
| 1985 | } |
| 1986 | } |
| 1987 | if (portp->state & ASY_TXLOW) { |
| 1988 | portp->state &= ~ASY_TXLOW; |
| 1989 | (*linesw[tp->t_line].l_start)(tp); |
| 1990 | } |
| 1991 | |
| 1992 | if (portp->state & ASY_ACTIVE) |
| 1993 | rearm++; |
| 1994 | } |
| 1995 | } |
| 1996 | crit_exit(); |
| 1997 | |
| 1998 | if (rearm) |
| 1999 | stl_dotimeout(); |
| 2000 | } |
| 2001 | |
| 2002 | /*****************************************************************************/ |
| 2003 | |
| 2004 | /* |
| 2005 | * Process the RX data that has been buffered up in the RX ring queue. |
| 2006 | */ |
| 2007 | |
| 2008 | static void stl_rxprocess(stlport_t *portp) |
| 2009 | { |
| 2010 | struct tty *tp; |
| 2011 | unsigned int len, stlen, lostlen; |
| 2012 | char *head, *tail; |
| 2013 | char status; |
| 2014 | int ch; |
| 2015 | |
| 2016 | #if STLDEBUG |
| 2017 | printf("stl_rxprocess(portp=%x): brdnr=%d portnr=%d\n", (int) portp, |
| 2018 | portp->brdnr, portp->portnr); |
| 2019 | #endif |
| 2020 | |
| 2021 | tp = &portp->tty; |
| 2022 | portp->state &= ~ASY_RXDATA; |
| 2023 | |
| 2024 | if ((tp->t_state & TS_ISOPEN) == 0) { |
| 2025 | stl_flush(portp, FREAD); |
| 2026 | return; |
| 2027 | } |
| 2028 | |
| 2029 | /* |
| 2030 | * Calculate the amount of data in the RX ring queue. Also calculate |
| 2031 | * the largest single copy size... |
| 2032 | */ |
| 2033 | head = portp->rx.head; |
| 2034 | tail = portp->rx.tail; |
| 2035 | if (head >= tail) { |
| 2036 | len = head - tail; |
| 2037 | stlen = len; |
| 2038 | } else { |
| 2039 | len = STL_RXBUFSIZE - (tail - head); |
| 2040 | stlen = portp->rx.endbuf - tail; |
| 2041 | } |
| 2042 | |
| 2043 | if (tp->t_state & TS_CAN_BYPASS_L_RINT) { |
| 2044 | if (len > 0) { |
| 2045 | if (((tp->t_rawq.c_cc + len) >= TTYHOG) && |
| 2046 | ((portp->state & ASY_RTSFLOWMODE) || |
| 2047 | (tp->t_iflag & IXOFF)) && |
| 2048 | ((tp->t_state & TS_TBLOCK) == 0)) { |
| 2049 | ch = TTYHOG - tp->t_rawq.c_cc - 1; |
| 2050 | len = (ch > 0) ? ch : 0; |
| 2051 | stlen = MIN(stlen, len); |
| 2052 | ttyblock(tp); |
| 2053 | } |
| 2054 | lostlen = b_to_q(tail, stlen, &tp->t_rawq); |
| 2055 | tail += stlen; |
| 2056 | len -= stlen; |
| 2057 | if (tail >= portp->rx.endbuf) { |
| 2058 | tail = portp->rx.buf; |
| 2059 | lostlen += b_to_q(tail, len, &tp->t_rawq); |
| 2060 | tail += len; |
| 2061 | } |
| 2062 | portp->stats.rxlost += lostlen; |
| 2063 | ttwakeup(tp); |
| 2064 | portp->rx.tail = tail; |
| 2065 | } |
| 2066 | } else { |
| 2067 | while (portp->rx.tail != head) { |
| 2068 | ch = (unsigned char) *(portp->rx.tail); |
| 2069 | status = *(portp->rx.tail + STL_RXBUFSIZE); |
| 2070 | if (status) { |
| 2071 | *(portp->rx.tail + STL_RXBUFSIZE) = 0; |
| 2072 | if (status & ST_BREAK) |
| 2073 | ch |= TTY_BI; |
| 2074 | if (status & ST_FRAMING) |
| 2075 | ch |= TTY_FE; |
| 2076 | if (status & ST_PARITY) |
| 2077 | ch |= TTY_PE; |
| 2078 | if (status & ST_OVERRUN) |
| 2079 | ch |= TTY_OE; |
| 2080 | } |
| 2081 | (*linesw[tp->t_line].l_rint)(ch, tp); |
| 2082 | if (portp->rx.tail == head) |
| 2083 | break; |
| 2084 | |
| 2085 | if (++(portp->rx.tail) >= portp->rx.endbuf) |
| 2086 | portp->rx.tail = portp->rx.buf; |
| 2087 | } |
| 2088 | } |
| 2089 | |
| 2090 | if (head != portp->rx.tail) |
| 2091 | portp->state |= ASY_RXDATA; |
| 2092 | |
| 2093 | /* |
| 2094 | * If we were flow controled then maybe the buffer is low enough that |
| 2095 | * we can re-activate it. |
| 2096 | */ |
| 2097 | if ((portp->state & ASY_RTSFLOW) && ((tp->t_state & TS_TBLOCK) == 0)) |
| 2098 | stl_flowcontrol(portp, 1, -1); |
| 2099 | } |
| 2100 | |
| 2101 | /*****************************************************************************/ |
| 2102 | |
| 2103 | static int stl_param(struct tty *tp, struct termios *tiosp) |
| 2104 | { |
| 2105 | stlport_t *portp; |
| 2106 | |
| 2107 | portp = (stlport_t *) tp; |
| 2108 | if (portp == (stlport_t *) NULL) |
| 2109 | return(ENODEV); |
| 2110 | |
| 2111 | return(stl_setport(portp, tiosp)); |
| 2112 | } |
| 2113 | |
| 2114 | /*****************************************************************************/ |
| 2115 | |
| 2116 | /* |
| 2117 | * Action the flow control as required. The hw and sw args inform the |
| 2118 | * routine what flow control methods it should try. |
| 2119 | */ |
| 2120 | |
| 2121 | static void stl_flowcontrol(stlport_t *portp, int hw, int sw) |
| 2122 | { |
| 2123 | unsigned char *head, *tail; |
| 2124 | int len, hwflow; |
| 2125 | |
| 2126 | #if STLDEBUG |
| 2127 | printf("stl_flowcontrol(portp=%x,hw=%d,sw=%d)\n", (int) portp, hw, sw); |
| 2128 | #endif |
| 2129 | |
| 2130 | hwflow = -1; |
| 2131 | |
| 2132 | if (portp->state & ASY_RTSFLOWMODE) { |
| 2133 | if (hw == 0) { |
| 2134 | if ((portp->state & ASY_RTSFLOW) == 0) |
| 2135 | hwflow = 0; |
| 2136 | } else if (hw > 0) { |
| 2137 | if (portp->state & ASY_RTSFLOW) { |
| 2138 | head = portp->rx.head; |
| 2139 | tail = portp->rx.tail; |
| 2140 | len = (head >= tail) ? (head - tail) : |
| 2141 | (STL_RXBUFSIZE - (tail - head)); |
| 2142 | if (len < STL_RXBUFHIGH) |
| 2143 | hwflow = 1; |
| 2144 | } |
| 2145 | } |
| 2146 | } |
| 2147 | |
| 2148 | /* |
| 2149 | * We have worked out what to do, if anything. So now apply it to the |
| 2150 | * UART port. |
| 2151 | */ |
| 2152 | stl_sendflow(portp, hwflow, sw); |
| 2153 | } |
| 2154 | |
| 2155 | /*****************************************************************************/ |
| 2156 | |
| 2157 | /* |
| 2158 | * Enable l_rint processing bypass mode if tty modes allow it. |
| 2159 | */ |
| 2160 | |
| 2161 | static void stl_ttyoptim(stlport_t *portp, struct termios *tiosp) |
| 2162 | { |
| 2163 | struct tty *tp; |
| 2164 | |
| 2165 | tp = &portp->tty; |
| 2166 | if (((tiosp->c_iflag & |
| 2167 | (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP)) == 0) && |
| 2168 | (((tiosp->c_iflag & BRKINT) == 0) || (tiosp->c_iflag & IGNBRK)) && |
| 2169 | (((tiosp->c_iflag & PARMRK) == 0) || |
| 2170 | ((tiosp->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))) && |
| 2171 | ((tiosp->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) ==0) && |
| 2172 | (linesw[tp->t_line].l_rint == ttyinput)) |
| 2173 | tp->t_state |= TS_CAN_BYPASS_L_RINT; |
| 2174 | else |
| 2175 | tp->t_state &= ~TS_CAN_BYPASS_L_RINT; |
| 2176 | portp->hotchar = linesw[tp->t_line].l_hotchar; |
| 2177 | } |
| 2178 | |
| 2179 | /*****************************************************************************/ |
| 2180 | |
| 2181 | /* |
| 2182 | * Try and find and initialize all the ports on a panel. We don't care |
| 2183 | * what sort of board these ports are on - since the port io registers |
| 2184 | * are almost identical when dealing with ports. |
| 2185 | */ |
| 2186 | |
| 2187 | static int stl_initports(stlbrd_t *brdp, stlpanel_t *panelp) |
| 2188 | { |
| 2189 | stlport_t *portp; |
| 2190 | unsigned int chipmask; |
| 2191 | int i, j; |
| 2192 | |
| 2193 | #if STLDEBUG |
| 2194 | printf("stl_initports(panelp=%x)\n", (int) panelp); |
| 2195 | #endif |
| 2196 | |
| 2197 | chipmask = stl_panelinit(brdp, panelp); |
| 2198 | |
| 2199 | /* |
| 2200 | * All UART's are initialized if found. Now go through and setup |
| 2201 | * each ports data structures. Also initialize each individual |
| 2202 | * UART port. |
| 2203 | */ |
| 2204 | for (i = 0; (i < panelp->nrports); i++) { |
| 2205 | portp = kmalloc(sizeof(stlport_t), M_TTYS, M_WAITOK | M_ZERO); |
| 2206 | |
| 2207 | portp->portnr = i; |
| 2208 | portp->brdnr = panelp->brdnr; |
| 2209 | portp->panelnr = panelp->panelnr; |
| 2210 | portp->uartp = panelp->uartp; |
| 2211 | portp->clk = brdp->clk; |
| 2212 | panelp->ports[i] = portp; |
| 2213 | |
| 2214 | j = STL_TXBUFSIZE + (2 * STL_RXBUFSIZE); |
| 2215 | portp->tx.buf = kmalloc(j, M_TTYS, M_WAITOK); |
| 2216 | portp->tx.endbuf = portp->tx.buf + STL_TXBUFSIZE; |
| 2217 | portp->tx.head = portp->tx.buf; |
| 2218 | portp->tx.tail = portp->tx.buf; |
| 2219 | portp->rx.buf = portp->tx.buf + STL_TXBUFSIZE; |
| 2220 | portp->rx.endbuf = portp->rx.buf + STL_RXBUFSIZE; |
| 2221 | portp->rx.head = portp->rx.buf; |
| 2222 | portp->rx.tail = portp->rx.buf; |
| 2223 | portp->rxstatus.buf = portp->rx.buf + STL_RXBUFSIZE; |
| 2224 | portp->rxstatus.endbuf = portp->rxstatus.buf + STL_RXBUFSIZE; |
| 2225 | portp->rxstatus.head = portp->rxstatus.buf; |
| 2226 | portp->rxstatus.tail = portp->rxstatus.buf; |
| 2227 | bzero(portp->rxstatus.head, STL_RXBUFSIZE); |
| 2228 | |
| 2229 | portp->initintios.c_ispeed = STL_DEFSPEED; |
| 2230 | portp->initintios.c_ospeed = STL_DEFSPEED; |
| 2231 | portp->initintios.c_cflag = STL_DEFCFLAG; |
| 2232 | portp->initintios.c_iflag = 0; |
| 2233 | portp->initintios.c_oflag = 0; |
| 2234 | portp->initintios.c_lflag = 0; |
| 2235 | bcopy(&ttydefchars[0], &portp->initintios.c_cc[0], |
| 2236 | sizeof(portp->initintios.c_cc)); |
| 2237 | portp->initouttios = portp->initintios; |
| 2238 | portp->dtrwait = 3 * hz; |
| 2239 | callout_init(&portp->dtr_ch); |
| 2240 | |
| 2241 | stl_portinit(brdp, panelp, portp); |
| 2242 | } |
| 2243 | |
| 2244 | return(0); |
| 2245 | } |
| 2246 | |
| 2247 | /*****************************************************************************/ |
| 2248 | |
| 2249 | /* |
| 2250 | * Try to find and initialize an EasyIO board. |
| 2251 | */ |
| 2252 | |
| 2253 | static int stl_initeio(stlbrd_t *brdp) |
| 2254 | { |
| 2255 | stlpanel_t *panelp; |
| 2256 | unsigned int status; |
| 2257 | |
| 2258 | #if STLDEBUG |
| 2259 | printf("stl_initeio(brdp=%x)\n", (int) brdp); |
| 2260 | #endif |
| 2261 | |
| 2262 | brdp->ioctrl = brdp->ioaddr1 + 1; |
| 2263 | brdp->iostatus = brdp->ioaddr1 + 2; |
| 2264 | brdp->clk = EIO_CLK; |
| 2265 | brdp->isr = stl_eiointr; |
| 2266 | |
| 2267 | status = inb(brdp->iostatus); |
| 2268 | switch (status & EIO_IDBITMASK) { |
| 2269 | case EIO_8PORTM: |
| 2270 | brdp->clk = EIO_CLK8M; |
| 2271 | /* fall thru */ |
| 2272 | case EIO_8PORTRS: |
| 2273 | case EIO_8PORTDI: |
| 2274 | brdp->nrports = 8; |
| 2275 | break; |
| 2276 | case EIO_4PORTRS: |
| 2277 | brdp->nrports = 4; |
| 2278 | break; |
| 2279 | case EIO_MK3: |
| 2280 | switch (status & EIO_BRDMASK) { |
| 2281 | case ID_BRD4: |
| 2282 | brdp->nrports = 4; |
| 2283 | break; |
| 2284 | case ID_BRD8: |
| 2285 | brdp->nrports = 8; |
| 2286 | break; |
| 2287 | case ID_BRD16: |
| 2288 | brdp->nrports = 16; |
| 2289 | break; |
| 2290 | default: |
| 2291 | return(ENODEV); |
| 2292 | } |
| 2293 | brdp->ioctrl++; |
| 2294 | break; |
| 2295 | default: |
| 2296 | return(ENODEV); |
| 2297 | } |
| 2298 | |
| 2299 | if (brdp->brdtype == BRD_EASYIOPCI) { |
| 2300 | outb((brdp->ioaddr2 + 0x4c), 0x41); |
| 2301 | } else { |
| 2302 | /* |
| 2303 | * Check that the supplied IRQ is good and then use it to setup the |
| 2304 | * programmable interrupt bits on EIO board. Also set the edge/level |
| 2305 | * triggered interrupt bit. |
| 2306 | */ |
| 2307 | if ((brdp->irq < 0) || (brdp->irq > 15) || |
| 2308 | (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) { |
| 2309 | printf("STALLION: invalid irq=%d for brd=%d\n", |
| 2310 | brdp->irq, brdp->brdnr); |
| 2311 | return(EINVAL); |
| 2312 | } |
| 2313 | outb(brdp->ioctrl, (stl_vecmap[brdp->irq] | |
| 2314 | ((brdp->irqtype) ? EIO_INTLEVEL : EIO_INTEDGE))); |
| 2315 | } |
| 2316 | |
| 2317 | panelp = kmalloc(sizeof(stlpanel_t), M_TTYS, M_WAITOK | M_ZERO); |
| 2318 | panelp->brdnr = brdp->brdnr; |
| 2319 | panelp->panelnr = 0; |
| 2320 | panelp->nrports = brdp->nrports; |
| 2321 | panelp->iobase = brdp->ioaddr1; |
| 2322 | panelp->hwid = status; |
| 2323 | if ((status & EIO_IDBITMASK) == EIO_MK3) { |
| 2324 | panelp->uartp = (void *) &stl_sc26198uart; |
| 2325 | panelp->isr = stl_sc26198intr; |
| 2326 | } else { |
| 2327 | panelp->uartp = (void *) &stl_cd1400uart; |
| 2328 | panelp->isr = stl_cd1400eiointr; |
| 2329 | } |
| 2330 | brdp->panels[0] = panelp; |
| 2331 | brdp->nrpanels = 1; |
| 2332 | brdp->hwid = status; |
| 2333 | brdp->state |= BRD_FOUND; |
| 2334 | return(0); |
| 2335 | } |
| 2336 | |
| 2337 | /*****************************************************************************/ |
| 2338 | |
| 2339 | /* |
| 2340 | * Try to find an ECH board and initialize it. This code is capable of |
| 2341 | * dealing with all types of ECH board. |
| 2342 | */ |
| 2343 | |
| 2344 | static int stl_initech(stlbrd_t *brdp) |
| 2345 | { |
| 2346 | stlpanel_t *panelp; |
| 2347 | unsigned int status, nxtid; |
| 2348 | int panelnr, ioaddr, banknr, i; |
| 2349 | |
| 2350 | #if STLDEBUG |
| 2351 | printf("stl_initech(brdp=%x)\n", (int) brdp); |
| 2352 | #endif |
| 2353 | |
| 2354 | /* |
| 2355 | * Set up the initial board register contents for boards. This varys a |
| 2356 | * bit between the different board types. So we need to handle each |
| 2357 | * separately. Also do a check that the supplied IRQ is good. |
| 2358 | */ |
| 2359 | switch (brdp->brdtype) { |
| 2360 | |
| 2361 | case BRD_ECH: |
| 2362 | brdp->isr = stl_echatintr; |
| 2363 | brdp->ioctrl = brdp->ioaddr1 + 1; |
| 2364 | brdp->iostatus = brdp->ioaddr1 + 1; |
| 2365 | status = inb(brdp->iostatus); |
| 2366 | if ((status & ECH_IDBITMASK) != ECH_ID) |
| 2367 | return(ENODEV); |
| 2368 | brdp->hwid = status; |
| 2369 | |
| 2370 | if ((brdp->irq < 0) || (brdp->irq > 15) || |
| 2371 | (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) { |
| 2372 | printf("STALLION: invalid irq=%d for brd=%d\n", |
| 2373 | brdp->irq, brdp->brdnr); |
| 2374 | return(EINVAL); |
| 2375 | } |
| 2376 | status = ((brdp->ioaddr2 & ECH_ADDR2MASK) >> 1); |
| 2377 | status |= (stl_vecmap[brdp->irq] << 1); |
| 2378 | outb(brdp->ioaddr1, (status | ECH_BRDRESET)); |
| 2379 | brdp->ioctrlval = ECH_INTENABLE | |
| 2380 | ((brdp->irqtype) ? ECH_INTLEVEL : ECH_INTEDGE); |
| 2381 | outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDENABLE)); |
| 2382 | outb(brdp->ioaddr1, status); |
| 2383 | break; |
| 2384 | |
| 2385 | case BRD_ECHMC: |
| 2386 | brdp->isr = stl_echmcaintr; |
| 2387 | brdp->ioctrl = brdp->ioaddr1 + 0x20; |
| 2388 | brdp->iostatus = brdp->ioctrl; |
| 2389 | status = inb(brdp->iostatus); |
| 2390 | if ((status & ECH_IDBITMASK) != ECH_ID) |
| 2391 | return(ENODEV); |
| 2392 | brdp->hwid = status; |
| 2393 | |
| 2394 | if ((brdp->irq < 0) || (brdp->irq > 15) || |
| 2395 | (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) { |
| 2396 | printf("STALLION: invalid irq=%d for brd=%d\n", |
| 2397 | brdp->irq, brdp->brdnr); |
| 2398 | return(EINVAL); |
| 2399 | } |
| 2400 | outb(brdp->ioctrl, ECHMC_BRDRESET); |
| 2401 | outb(brdp->ioctrl, ECHMC_INTENABLE); |
| 2402 | break; |
| 2403 | |
| 2404 | case BRD_ECHPCI: |
| 2405 | brdp->isr = stl_echpciintr; |
| 2406 | brdp->ioctrl = brdp->ioaddr1 + 2; |
| 2407 | break; |
| 2408 | |
| 2409 | case BRD_ECH64PCI: |
| 2410 | brdp->isr = stl_echpci64intr; |
| 2411 | brdp->ioctrl = brdp->ioaddr2 + 0x40; |
| 2412 | outb((brdp->ioaddr1 + 0x4c), 0x43); |
| 2413 | break; |
| 2414 | |
| 2415 | default: |
| 2416 | printf("STALLION: unknown board type=%d\n", brdp->brdtype); |
| 2417 | break; |
| 2418 | } |
| 2419 | |
| 2420 | brdp->clk = ECH_CLK; |
| 2421 | |
| 2422 | /* |
| 2423 | * Scan through the secondary io address space looking for panels. |
| 2424 | * As we find'em allocate and initialize panel structures for each. |
| 2425 | */ |
| 2426 | ioaddr = brdp->ioaddr2; |
| 2427 | panelnr = 0; |
| 2428 | nxtid = 0; |
| 2429 | banknr = 0; |
| 2430 | |
| 2431 | for (i = 0; (i < STL_MAXPANELS); i++) { |
| 2432 | if (brdp->brdtype == BRD_ECHPCI) { |
| 2433 | outb(brdp->ioctrl, nxtid); |
| 2434 | ioaddr = brdp->ioaddr2; |
| 2435 | } |
| 2436 | status = inb(ioaddr + ECH_PNLSTATUS); |
| 2437 | if ((status & ECH_PNLIDMASK) != nxtid) |
| 2438 | break; |
| 2439 | panelp = kmalloc(sizeof(stlpanel_t), M_TTYS, M_WAITOK | M_ZERO); |
| 2440 | panelp->brdnr = brdp->brdnr; |
| 2441 | panelp->panelnr = panelnr; |
| 2442 | panelp->iobase = ioaddr; |
| 2443 | panelp->pagenr = nxtid; |
| 2444 | panelp->hwid = status; |
| 2445 | brdp->bnk2panel[banknr] = panelp; |
| 2446 | brdp->bnkpageaddr[banknr] = nxtid; |
| 2447 | brdp->bnkstataddr[banknr++] = ioaddr + ECH_PNLSTATUS; |
| 2448 | |
| 2449 | if (status & ECH_PNLXPID) { |
| 2450 | panelp->uartp = (void *) &stl_sc26198uart; |
| 2451 | panelp->isr = stl_sc26198intr; |
| 2452 | if (status & ECH_PNL16PORT) { |
| 2453 | panelp->nrports = 16; |
| 2454 | brdp->bnk2panel[banknr] = panelp; |
| 2455 | brdp->bnkpageaddr[banknr] = nxtid; |
| 2456 | brdp->bnkstataddr[banknr++] = ioaddr + 4 + |
| 2457 | ECH_PNLSTATUS; |
| 2458 | } else { |
| 2459 | panelp->nrports = 8; |
| 2460 | } |
| 2461 | } else { |
| 2462 | panelp->uartp = (void *) &stl_cd1400uart; |
| 2463 | panelp->isr = stl_cd1400echintr; |
| 2464 | if (status & ECH_PNL16PORT) { |
| 2465 | panelp->nrports = 16; |
| 2466 | panelp->ackmask = 0x80; |
| 2467 | if (brdp->brdtype != BRD_ECHPCI) |
| 2468 | ioaddr += EREG_BANKSIZE; |
| 2469 | brdp->bnk2panel[banknr] = panelp; |
| 2470 | brdp->bnkpageaddr[banknr] = ++nxtid; |
| 2471 | brdp->bnkstataddr[banknr++] = ioaddr + |
| 2472 | ECH_PNLSTATUS; |
| 2473 | } else { |
| 2474 | panelp->nrports = 8; |
| 2475 | panelp->ackmask = 0xc0; |
| 2476 | } |
| 2477 | } |
| 2478 | |
| 2479 | nxtid++; |
| 2480 | ioaddr += EREG_BANKSIZE; |
| 2481 | brdp->nrports += panelp->nrports; |
| 2482 | brdp->panels[panelnr++] = panelp; |
| 2483 | if ((brdp->brdtype == BRD_ECH) || (brdp->brdtype == BRD_ECHMC)){ |
| 2484 | if (ioaddr >= (brdp->ioaddr2 + 0x20)) { |
| 2485 | printf("STALLION: too many ports attached " |
| 2486 | "to board %d, remove last module\n", |
| 2487 | brdp->brdnr); |
| 2488 | break; |
| 2489 | } |
| 2490 | } |
| 2491 | } |
| 2492 | |
| 2493 | brdp->nrpanels = panelnr; |
| 2494 | brdp->nrbnks = banknr; |
| 2495 | if (brdp->brdtype == BRD_ECH) |
| 2496 | outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDDISABLE)); |
| 2497 | |
| 2498 | brdp->state |= BRD_FOUND; |
| 2499 | return(0); |
| 2500 | } |
| 2501 | |
| 2502 | /*****************************************************************************/ |
| 2503 | |
| 2504 | /* |
| 2505 | * Initialize and configure the specified board. This firstly probes |
| 2506 | * for the board, if it is found then the board is initialized and |
| 2507 | * then all its ports are initialized as well. |
| 2508 | */ |
| 2509 | |
| 2510 | static int stl_brdinit(stlbrd_t *brdp) |
| 2511 | { |
| 2512 | stlpanel_t *panelp; |
| 2513 | int i, j, k; |
| 2514 | |
| 2515 | #if STLDEBUG |
| 2516 | printf("stl_brdinit(brdp=%x): unit=%d type=%d io1=%x io2=%x irq=%d\n", |
| 2517 | (int) brdp, brdp->brdnr, brdp->brdtype, brdp->ioaddr1, |
| 2518 | brdp->ioaddr2, brdp->irq); |
| 2519 | #endif |
| 2520 | |
| 2521 | switch (brdp->brdtype) { |
| 2522 | case BRD_EASYIO: |
| 2523 | case BRD_EASYIOPCI: |
| 2524 | stl_initeio(brdp); |
| 2525 | break; |
| 2526 | case BRD_ECH: |
| 2527 | case BRD_ECHMC: |
| 2528 | case BRD_ECHPCI: |
| 2529 | case BRD_ECH64PCI: |
| 2530 | stl_initech(brdp); |
| 2531 | break; |
| 2532 | default: |
| 2533 | printf("STALLION: unit=%d is unknown board type=%d\n", |
| 2534 | brdp->brdnr, brdp->brdtype); |
| 2535 | return(ENODEV); |
| 2536 | } |
| 2537 | |
| 2538 | stl_brds[brdp->brdnr] = brdp; |
| 2539 | if ((brdp->state & BRD_FOUND) == 0) { |
| 2540 | #if 0 |
| 2541 | printf("STALLION: %s board not found, unit=%d io=%x irq=%d\n", |
| 2542 | stl_brdnames[brdp->brdtype], brdp->brdnr, |
| 2543 | brdp->ioaddr1, brdp->irq); |
| 2544 | #endif |
| 2545 | return(ENODEV); |
| 2546 | } |
| 2547 | |
| 2548 | for (i = 0, k = 0; (i < STL_MAXPANELS); i++) { |
| 2549 | panelp = brdp->panels[i]; |
| 2550 | if (panelp != (stlpanel_t *) NULL) { |
| 2551 | stl_initports(brdp, panelp); |
| 2552 | for (j = 0; (j < panelp->nrports); j++) |
| 2553 | brdp->ports[k++] = panelp->ports[j]; |
| 2554 | } |
| 2555 | } |
| 2556 | |
| 2557 | printf("stl%d: %s (driver version %s) unit=%d nrpanels=%d nrports=%d\n", |
| 2558 | brdp->unitid, stl_brdnames[brdp->brdtype], stl_drvversion, |
| 2559 | brdp->brdnr, brdp->nrpanels, brdp->nrports); |
| 2560 | return(0); |
| 2561 | } |
| 2562 | |
| 2563 | /*****************************************************************************/ |
| 2564 | |
| 2565 | /* |
| 2566 | * Return the board stats structure to user app. |
| 2567 | */ |
| 2568 | |
| 2569 | static int stl_getbrdstats(caddr_t data) |
| 2570 | { |
| 2571 | stlbrd_t *brdp; |
| 2572 | stlpanel_t *panelp; |
| 2573 | int i; |
| 2574 | |
| 2575 | stl_brdstats = *((combrd_t *) data); |
| 2576 | if (stl_brdstats.brd >= STL_MAXBRDS) |
| 2577 | return(-ENODEV); |
| 2578 | brdp = stl_brds[stl_brdstats.brd]; |
| 2579 | if (brdp == (stlbrd_t *) NULL) |
| 2580 | return(-ENODEV); |
| 2581 | |
| 2582 | bzero(&stl_brdstats, sizeof(combrd_t)); |
| 2583 | stl_brdstats.brd = brdp->brdnr; |
| 2584 | stl_brdstats.type = brdp->brdtype; |
| 2585 | stl_brdstats.hwid = brdp->hwid; |
| 2586 | stl_brdstats.state = brdp->state; |
| 2587 | stl_brdstats.ioaddr = brdp->ioaddr1; |
| 2588 | stl_brdstats.ioaddr2 = brdp->ioaddr2; |
| 2589 | stl_brdstats.irq = brdp->irq; |
| 2590 | stl_brdstats.nrpanels = brdp->nrpanels; |
| 2591 | stl_brdstats.nrports = brdp->nrports; |
| 2592 | for (i = 0; (i < brdp->nrpanels); i++) { |
| 2593 | panelp = brdp->panels[i]; |
| 2594 | stl_brdstats.panels[i].panel = i; |
| 2595 | stl_brdstats.panels[i].hwid = panelp->hwid; |
| 2596 | stl_brdstats.panels[i].nrports = panelp->nrports; |
| 2597 | } |
| 2598 | |
| 2599 | *((combrd_t *) data) = stl_brdstats; |
| 2600 | return(0); |
| 2601 | } |
| 2602 | |
| 2603 | /*****************************************************************************/ |
| 2604 | |
| 2605 | /* |
| 2606 | * Resolve the referenced port number into a port struct pointer. |
| 2607 | */ |
| 2608 | |
| 2609 | static stlport_t *stl_getport(int brdnr, int panelnr, int portnr) |
| 2610 | { |
| 2611 | stlbrd_t *brdp; |
| 2612 | stlpanel_t *panelp; |
| 2613 | |
| 2614 | if ((brdnr < 0) || (brdnr >= STL_MAXBRDS)) |
| 2615 | return((stlport_t *) NULL); |
| 2616 | brdp = stl_brds[brdnr]; |
| 2617 | if (brdp == (stlbrd_t *) NULL) |
| 2618 | return((stlport_t *) NULL); |
| 2619 | if ((panelnr < 0) || (panelnr >= brdp->nrpanels)) |
| 2620 | return((stlport_t *) NULL); |
| 2621 | panelp = brdp->panels[panelnr]; |
| 2622 | if (panelp == (stlpanel_t *) NULL) |
| 2623 | return((stlport_t *) NULL); |
| 2624 | if ((portnr < 0) || (portnr >= panelp->nrports)) |
| 2625 | return((stlport_t *) NULL); |
| 2626 | return(panelp->ports[portnr]); |
| 2627 | } |
| 2628 | |
| 2629 | /*****************************************************************************/ |
| 2630 | |
| 2631 | /* |
| 2632 | * Return the port stats structure to user app. A NULL port struct |
| 2633 | * pointer passed in means that we need to find out from the app |
| 2634 | * what port to get stats for (used through board control device). |
| 2635 | */ |
| 2636 | |
| 2637 | static int stl_getportstats(stlport_t *portp, caddr_t data) |
| 2638 | { |
| 2639 | unsigned char *head, *tail; |
| 2640 | |
| 2641 | if (portp == (stlport_t *) NULL) { |
| 2642 | stl_comstats = *((comstats_t *) data); |
| 2643 | portp = stl_getport(stl_comstats.brd, stl_comstats.panel, |
| 2644 | stl_comstats.port); |
| 2645 | if (portp == (stlport_t *) NULL) |
| 2646 | return(-ENODEV); |
| 2647 | } |
| 2648 | |
| 2649 | portp->stats.state = portp->state; |
| 2650 | /*portp->stats.flags = portp->flags;*/ |
| 2651 | portp->stats.hwid = portp->hwid; |
| 2652 | portp->stats.ttystate = portp->tty.t_state; |
| 2653 | portp->stats.cflags = portp->tty.t_cflag; |
| 2654 | portp->stats.iflags = portp->tty.t_iflag; |
| 2655 | portp->stats.oflags = portp->tty.t_oflag; |
| 2656 | portp->stats.lflags = portp->tty.t_lflag; |
| 2657 | |
| 2658 | head = portp->tx.head; |
| 2659 | tail = portp->tx.tail; |
| 2660 | portp->stats.txbuffered = ((head >= tail) ? (head - tail) : |
| 2661 | (STL_TXBUFSIZE - (tail - head))); |
| 2662 | |
| 2663 | head = portp->rx.head; |
| 2664 | tail = portp->rx.tail; |
| 2665 | portp->stats.rxbuffered = (head >= tail) ? (head - tail) : |
| 2666 | (STL_RXBUFSIZE - (tail - head)); |
| 2667 | |
| 2668 | portp->stats.signals = (unsigned long) stl_getsignals(portp); |
| 2669 | |
| 2670 | *((comstats_t *) data) = portp->stats; |
| 2671 | return(0); |
| 2672 | } |
| 2673 | |
| 2674 | /*****************************************************************************/ |
| 2675 | |
| 2676 | /* |
| 2677 | * Clear the port stats structure. We also return it zeroed out... |
| 2678 | */ |
| 2679 | |
| 2680 | static int stl_clrportstats(stlport_t *portp, caddr_t data) |
| 2681 | { |
| 2682 | if (portp == (stlport_t *) NULL) { |
| 2683 | stl_comstats = *((comstats_t *) data); |
| 2684 | portp = stl_getport(stl_comstats.brd, stl_comstats.panel, |
| 2685 | stl_comstats.port); |
| 2686 | if (portp == (stlport_t *) NULL) |
| 2687 | return(ENODEV); |
| 2688 | } |
| 2689 | |
| 2690 | bzero(&portp->stats, sizeof(comstats_t)); |
| 2691 | portp->stats.brd = portp->brdnr; |
| 2692 | portp->stats.panel = portp->panelnr; |
| 2693 | portp->stats.port = portp->portnr; |
| 2694 | *((comstats_t *) data) = stl_comstats; |
| 2695 | return(0); |
| 2696 | } |
| 2697 | |
| 2698 | /*****************************************************************************/ |
| 2699 | |
| 2700 | /* |
| 2701 | * The "staliomem" device is used for stats collection in this driver. |
| 2702 | */ |
| 2703 | |
| 2704 | static int stl_memioctl(cdev_t dev, unsigned long cmd, caddr_t data, int flag) |
| 2705 | { |
| 2706 | int rc; |
| 2707 | |
| 2708 | #if STLDEBUG |
| 2709 | printf("stl_memioctl(dev=%s,cmd=%lx,data=%p,flag=%x)\n", |
| 2710 | devtoname(dev), cmd, (void *) data, flag); |
| 2711 | #endif |
| 2712 | |
| 2713 | rc = 0; |
| 2714 | |
| 2715 | switch (cmd) { |
| 2716 | case COM_GETPORTSTATS: |
| 2717 | rc = stl_getportstats((stlport_t *) NULL, data); |
| 2718 | break; |
| 2719 | case COM_CLRPORTSTATS: |
| 2720 | rc = stl_clrportstats((stlport_t *) NULL, data); |
| 2721 | break; |
| 2722 | case COM_GETBRDSTATS: |
| 2723 | rc = stl_getbrdstats(data); |
| 2724 | break; |
| 2725 | default: |
| 2726 | rc = ENOTTY; |
| 2727 | break; |
| 2728 | } |
| 2729 | |
| 2730 | return(rc); |
| 2731 | } |
| 2732 | |
| 2733 | /*****************************************************************************/ |
| 2734 | |
| 2735 | /*****************************************************************************/ |
| 2736 | /* CD1400 UART CODE */ |
| 2737 | /*****************************************************************************/ |
| 2738 | |
| 2739 | /* |
| 2740 | * These functions get/set/update the registers of the cd1400 UARTs. |
| 2741 | * Access to the cd1400 registers is via an address/data io port pair. |
| 2742 | */ |
| 2743 | |
| 2744 | static int stl_cd1400getreg(stlport_t *portp, int regnr) |
| 2745 | { |
| 2746 | outb(portp->ioaddr, (regnr + portp->uartaddr)); |
| 2747 | return(inb(portp->ioaddr + EREG_DATA)); |
| 2748 | } |
| 2749 | |
| 2750 | /*****************************************************************************/ |
| 2751 | |
| 2752 | static void stl_cd1400setreg(stlport_t *portp, int regnr, int value) |
| 2753 | { |
| 2754 | outb(portp->ioaddr, (regnr + portp->uartaddr)); |
| 2755 | outb((portp->ioaddr + EREG_DATA), value); |
| 2756 | } |
| 2757 | |
| 2758 | /*****************************************************************************/ |
| 2759 | |
| 2760 | static int stl_cd1400updatereg(stlport_t *portp, int regnr, int value) |
| 2761 | { |
| 2762 | outb(portp->ioaddr, (regnr + portp->uartaddr)); |
| 2763 | if (inb(portp->ioaddr + EREG_DATA) != value) { |
| 2764 | outb((portp->ioaddr + EREG_DATA), value); |
| 2765 | return(1); |
| 2766 | } |
| 2767 | return(0); |
| 2768 | } |
| 2769 | |
| 2770 | /*****************************************************************************/ |
| 2771 | |
| 2772 | static void stl_cd1400flush(stlport_t *portp, int flag) |
| 2773 | { |
| 2774 | |
| 2775 | #if STLDEBUG |
| 2776 | printf("stl_cd1400flush(portp=%x,flag=%x)\n", (int) portp, flag); |
| 2777 | #endif |
| 2778 | |
| 2779 | if (portp == (stlport_t *) NULL) |
| 2780 | return; |
| 2781 | |
| 2782 | crit_enter(); |
| 2783 | |
| 2784 | if (flag & FWRITE) { |
| 2785 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 2786 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); |
| 2787 | stl_cd1400ccrwait(portp); |
| 2788 | stl_cd1400setreg(portp, CCR, CCR_TXFLUSHFIFO); |
| 2789 | stl_cd1400ccrwait(portp); |
| 2790 | BRDDISABLE(portp->brdnr); |
| 2791 | } |
| 2792 | |
| 2793 | if (flag & FREAD) { |
| 2794 | /* Hmmm */ |
| 2795 | } |
| 2796 | |
| 2797 | crit_exit(); |
| 2798 | } |
| 2799 | |
| 2800 | /*****************************************************************************/ |
| 2801 | |
| 2802 | static void stl_cd1400ccrwait(stlport_t *portp) |
| 2803 | { |
| 2804 | int i; |
| 2805 | |
| 2806 | for (i = 0; (i < CCR_MAXWAIT); i++) { |
| 2807 | if (stl_cd1400getreg(portp, CCR) == 0) |
| 2808 | return; |
| 2809 | } |
| 2810 | |
| 2811 | printf("stl%d: cd1400 device not responding, panel=%d port=%d\n", |
| 2812 | portp->brdnr, portp->panelnr, portp->portnr); |
| 2813 | } |
| 2814 | |
| 2815 | /*****************************************************************************/ |
| 2816 | |
| 2817 | /* |
| 2818 | * Transmit interrupt handler. This has gotta be fast! Handling TX |
| 2819 | * chars is pretty simple, stuff as many as possible from the TX buffer |
| 2820 | * into the cd1400 FIFO. Must also handle TX breaks here, since they |
| 2821 | * are embedded as commands in the data stream. Oh no, had to use a goto! |
| 2822 | */ |
| 2823 | |
| 2824 | static __inline void stl_cd1400txisr(stlpanel_t *panelp, int ioaddr) |
| 2825 | { |
| 2826 | struct tty *tp; |
| 2827 | stlport_t *portp; |
| 2828 | unsigned char ioack, srer; |
| 2829 | char *head, *tail; |
| 2830 | int len, stlen; |
| 2831 | |
| 2832 | #if STLDEBUG |
| 2833 | printf("stl_cd1400txisr(panelp=%x,ioaddr=%x)\n", (int) panelp, ioaddr); |
| 2834 | #endif |
| 2835 | |
| 2836 | ioack = inb(ioaddr + EREG_TXACK); |
| 2837 | if (((ioack & panelp->ackmask) != 0) || |
| 2838 | ((ioack & ACK_TYPMASK) != ACK_TYPTX)) { |
| 2839 | printf("STALLION: bad TX interrupt ack value=%x\n", |
| 2840 | ioack); |
| 2841 | return; |
| 2842 | } |
| 2843 | portp = panelp->ports[(ioack >> 3)]; |
| 2844 | tp = &portp->tty; |
| 2845 | |
| 2846 | /* |
| 2847 | * Unfortunately we need to handle breaks in the data stream, since |
| 2848 | * this is the only way to generate them on the cd1400. Do it now if |
| 2849 | * a break is to be sent. Some special cases here: brklen is -1 then |
| 2850 | * start sending an un-timed break, if brklen is -2 then stop sending |
| 2851 | * an un-timed break, if brklen is -3 then we have just sent an |
| 2852 | * un-timed break and do not want any data to go out, if brklen is -4 |
| 2853 | * then a break has just completed so clean up the port settings. |
| 2854 | */ |
| 2855 | if (portp->brklen != 0) { |
| 2856 | if (portp->brklen >= -1) { |
| 2857 | outb(ioaddr, (TDR + portp->uartaddr)); |
| 2858 | outb((ioaddr + EREG_DATA), ETC_CMD); |
| 2859 | outb((ioaddr + EREG_DATA), ETC_STARTBREAK); |
| 2860 | if (portp->brklen > 0) { |
| 2861 | outb((ioaddr + EREG_DATA), ETC_CMD); |
| 2862 | outb((ioaddr + EREG_DATA), ETC_DELAY); |
| 2863 | outb((ioaddr + EREG_DATA), portp->brklen); |
| 2864 | outb((ioaddr + EREG_DATA), ETC_CMD); |
| 2865 | outb((ioaddr + EREG_DATA), ETC_STOPBREAK); |
| 2866 | portp->brklen = -4; |
| 2867 | } else { |
| 2868 | portp->brklen = -3; |
| 2869 | } |
| 2870 | } else if (portp->brklen == -2) { |
| 2871 | outb(ioaddr, (TDR + portp->uartaddr)); |
| 2872 | outb((ioaddr + EREG_DATA), ETC_CMD); |
| 2873 | outb((ioaddr + EREG_DATA), ETC_STOPBREAK); |
| 2874 | portp->brklen = -4; |
| 2875 | } else if (portp->brklen == -3) { |
| 2876 | outb(ioaddr, (SRER + portp->uartaddr)); |
| 2877 | srer = inb(ioaddr + EREG_DATA); |
| 2878 | srer &= ~(SRER_TXDATA | SRER_TXEMPTY); |
| 2879 | outb((ioaddr + EREG_DATA), srer); |
| 2880 | } else { |
| 2881 | outb(ioaddr, (COR2 + portp->uartaddr)); |
| 2882 | outb((ioaddr + EREG_DATA), |
| 2883 | (inb(ioaddr + EREG_DATA) & ~COR2_ETC)); |
| 2884 | portp->brklen = 0; |
| 2885 | } |
| 2886 | goto stl_txalldone; |
| 2887 | } |
| 2888 | |
| 2889 | head = portp->tx.head; |
| 2890 | tail = portp->tx.tail; |
| 2891 | len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head)); |
| 2892 | if ((len == 0) || ((len < STL_TXBUFLOW) && |
| 2893 | ((portp->state & ASY_TXLOW) == 0))) { |
| 2894 | portp->state |= ASY_TXLOW; |
| 2895 | stl_dotimeout(); |
| 2896 | } |
| 2897 | |
| 2898 | if (len == 0) { |
| 2899 | outb(ioaddr, (SRER + portp->uartaddr)); |
| 2900 | srer = inb(ioaddr + EREG_DATA); |
| 2901 | if (srer & SRER_TXDATA) { |
| 2902 | srer = (srer & ~SRER_TXDATA) | SRER_TXEMPTY; |
| 2903 | } else { |
| 2904 | srer &= ~(SRER_TXDATA | SRER_TXEMPTY); |
| 2905 | portp->state |= ASY_TXEMPTY; |
| 2906 | portp->state &= ~ASY_TXBUSY; |
| 2907 | } |
| 2908 | outb((ioaddr + EREG_DATA), srer); |
| 2909 | } else { |
| 2910 | len = MIN(len, CD1400_TXFIFOSIZE); |
| 2911 | portp->stats.txtotal += len; |
| 2912 | stlen = MIN(len, (portp->tx.endbuf - tail)); |
| 2913 | outb(ioaddr, (TDR + portp->uartaddr)); |
| 2914 | outsb((ioaddr + EREG_DATA), tail, stlen); |
| 2915 | len -= stlen; |
| 2916 | tail += stlen; |
| 2917 | if (tail >= portp->tx.endbuf) |
| 2918 | tail = portp->tx.buf; |
| 2919 | if (len > 0) { |
| 2920 | outsb((ioaddr + EREG_DATA), tail, len); |
| 2921 | tail += len; |
| 2922 | } |
| 2923 | portp->tx.tail = tail; |
| 2924 | } |
| 2925 | |
| 2926 | stl_txalldone: |
| 2927 | outb(ioaddr, (EOSRR + portp->uartaddr)); |
| 2928 | outb((ioaddr + EREG_DATA), 0); |
| 2929 | } |
| 2930 | |
| 2931 | /*****************************************************************************/ |
| 2932 | |
| 2933 | /* |
| 2934 | * Receive character interrupt handler. Determine if we have good chars |
| 2935 | * or bad chars and then process appropriately. |
| 2936 | */ |
| 2937 | |
| 2938 | static __inline void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr) |
| 2939 | { |
| 2940 | stlport_t *portp; |
| 2941 | struct tty *tp; |
| 2942 | unsigned int ioack, len, buflen, stlen; |
| 2943 | unsigned char status; |
| 2944 | char ch; |
| 2945 | char *head, *tail; |
| 2946 | |
| 2947 | #if STLDEBUG |
| 2948 | printf("stl_cd1400rxisr(panelp=%x,ioaddr=%x)\n", (int) panelp, ioaddr); |
| 2949 | #endif |
| 2950 | |
| 2951 | ioack = inb(ioaddr + EREG_RXACK); |
| 2952 | if ((ioack & panelp->ackmask) != 0) { |
| 2953 | printf("STALLION: bad RX interrupt ack value=%x\n", ioack); |
| 2954 | return; |
| 2955 | } |
| 2956 | portp = panelp->ports[(ioack >> 3)]; |
| 2957 | tp = &portp->tty; |
| 2958 | |
| 2959 | /* |
| 2960 | * First up, calculate how much room there is in the RX ring queue. |
| 2961 | * We also want to keep track of the longest possible copy length, |
| 2962 | * this has to allow for the wrapping of the ring queue. |
| 2963 | */ |
| 2964 | head = portp->rx.head; |
| 2965 | tail = portp->rx.tail; |
| 2966 | if (head >= tail) { |
| 2967 | buflen = STL_RXBUFSIZE - (head - tail) - 1; |
| 2968 | stlen = portp->rx.endbuf - head; |
| 2969 | } else { |
| 2970 | buflen = tail - head - 1; |
| 2971 | stlen = buflen; |
| 2972 | } |
| 2973 | |
| 2974 | /* |
| 2975 | * Check if the input buffer is near full. If so then we should take |
| 2976 | * some flow control action... It is very easy to do hardware and |
| 2977 | * software flow control from here since we have the port selected on |
| 2978 | * the UART. |
| 2979 | */ |
| 2980 | if (buflen <= (STL_RXBUFSIZE - STL_RXBUFHIGH)) { |
| 2981 | if (((portp->state & ASY_RTSFLOW) == 0) && |
| 2982 | (portp->state & ASY_RTSFLOWMODE)) { |
| 2983 | portp->state |= ASY_RTSFLOW; |
| 2984 | stl_cd1400setreg(portp, MCOR1, |
| 2985 | (stl_cd1400getreg(portp, MCOR1) & 0xf0)); |
| 2986 | stl_cd1400setreg(portp, MSVR2, 0); |
| 2987 | portp->stats.rxrtsoff++; |
| 2988 | } |
| 2989 | } |
| 2990 | |
| 2991 | /* |
| 2992 | * OK we are set, process good data... If the RX ring queue is full |
| 2993 | * just chuck the chars - don't leave them in the UART. |
| 2994 | */ |
| 2995 | if ((ioack & ACK_TYPMASK) == ACK_TYPRXGOOD) { |
| 2996 | outb(ioaddr, (RDCR + portp->uartaddr)); |
| 2997 | len = inb(ioaddr + EREG_DATA); |
| 2998 | if (buflen == 0) { |
| 2999 | outb(ioaddr, (RDSR + portp->uartaddr)); |
| 3000 | insb((ioaddr + EREG_DATA), &stl_unwanted[0], len); |
| 3001 | portp->stats.rxlost += len; |
| 3002 | portp->stats.rxtotal += len; |
| 3003 | } else { |
| 3004 | len = MIN(len, buflen); |
| 3005 | portp->stats.rxtotal += len; |
| 3006 | stlen = MIN(len, stlen); |
| 3007 | if (len > 0) { |
| 3008 | outb(ioaddr, (RDSR + portp->uartaddr)); |
| 3009 | insb((ioaddr + EREG_DATA), head, stlen); |
| 3010 | head += stlen; |
| 3011 | if (head >= portp->rx.endbuf) { |
| 3012 | head = portp->rx.buf; |
| 3013 | len -= stlen; |
| 3014 | insb((ioaddr + EREG_DATA), head, len); |
| 3015 | head += len; |
| 3016 | } |
| 3017 | } |
| 3018 | } |
| 3019 | } else if ((ioack & ACK_TYPMASK) == ACK_TYPRXBAD) { |
| 3020 | outb(ioaddr, (RDSR + portp->uartaddr)); |
| 3021 | status = inb(ioaddr + EREG_DATA); |
| 3022 | ch = inb(ioaddr + EREG_DATA); |
| 3023 | if (status & ST_BREAK) |
| 3024 | portp->stats.rxbreaks++; |
| 3025 | if (status & ST_FRAMING) |
| 3026 | portp->stats.rxframing++; |
| 3027 | if (status & ST_PARITY) |
| 3028 | portp->stats.rxparity++; |
| 3029 | if (status & ST_OVERRUN) |
| 3030 | portp->stats.rxoverrun++; |
| 3031 | if (status & ST_SCHARMASK) { |
| 3032 | if ((status & ST_SCHARMASK) == ST_SCHAR1) |
| 3033 | portp->stats.txxon++; |
| 3034 | if ((status & ST_SCHARMASK) == ST_SCHAR2) |
| 3035 | portp->stats.txxoff++; |
| 3036 | goto stl_rxalldone; |
| 3037 | } |
| 3038 | if ((portp->rxignoremsk & status) == 0) { |
| 3039 | if ((tp->t_state & TS_CAN_BYPASS_L_RINT) && |
| 3040 | ((status & ST_FRAMING) || |
| 3041 | ((status & ST_PARITY) && (tp->t_iflag & INPCK)))) |
| 3042 | ch = 0; |
| 3043 | if ((portp->rxmarkmsk & status) == 0) |
| 3044 | status = 0; |
| 3045 | *(head + STL_RXBUFSIZE) = status; |
| 3046 | *head++ = ch; |
| 3047 | if (head >= portp->rx.endbuf) |
| 3048 | head = portp->rx.buf; |
| 3049 | } |
| 3050 | } else { |
| 3051 | printf("STALLION: bad RX interrupt ack value=%x\n", ioack); |
| 3052 | return; |
| 3053 | } |
| 3054 | |
| 3055 | portp->rx.head = head; |
| 3056 | portp->state |= ASY_RXDATA; |
| 3057 | stl_dotimeout(); |
| 3058 | |
| 3059 | stl_rxalldone: |
| 3060 | outb(ioaddr, (EOSRR + portp->uartaddr)); |
| 3061 | outb((ioaddr + EREG_DATA), 0); |
| 3062 | } |
| 3063 | |
| 3064 | /*****************************************************************************/ |
| 3065 | |
| 3066 | /* |
| 3067 | * Modem interrupt handler. The is called when the modem signal line |
| 3068 | * (DCD) has changed state. |
| 3069 | */ |
| 3070 | |
| 3071 | static __inline void stl_cd1400mdmisr(stlpanel_t *panelp, int ioaddr) |
| 3072 | { |
| 3073 | stlport_t *portp; |
| 3074 | unsigned int ioack; |
| 3075 | unsigned char misr; |
| 3076 | |
| 3077 | #if STLDEBUG |
| 3078 | printf("stl_cd1400mdmisr(panelp=%x,ioaddr=%x)\n", (int) panelp, ioaddr); |
| 3079 | #endif |
| 3080 | |
| 3081 | ioack = inb(ioaddr + EREG_MDACK); |
| 3082 | if (((ioack & panelp->ackmask) != 0) || |
| 3083 | ((ioack & ACK_TYPMASK) != ACK_TYPMDM)) { |
| 3084 | printf("STALLION: bad MODEM interrupt ack value=%x\n", ioack); |
| 3085 | return; |
| 3086 | } |
| 3087 | portp = panelp->ports[(ioack >> 3)]; |
| 3088 | |
| 3089 | outb(ioaddr, (MISR + portp->uartaddr)); |
| 3090 | misr = inb(ioaddr + EREG_DATA); |
| 3091 | if (misr & MISR_DCD) { |
| 3092 | portp->state |= ASY_DCDCHANGE; |
| 3093 | portp->stats.modem++; |
| 3094 | stl_dotimeout(); |
| 3095 | } |
| 3096 | |
| 3097 | outb(ioaddr, (EOSRR + portp->uartaddr)); |
| 3098 | outb((ioaddr + EREG_DATA), 0); |
| 3099 | } |
| 3100 | |
| 3101 | /*****************************************************************************/ |
| 3102 | |
| 3103 | /* |
| 3104 | * Interrupt service routine for cd1400 EasyIO boards. |
| 3105 | */ |
| 3106 | |
| 3107 | static void stl_cd1400eiointr(stlpanel_t *panelp, unsigned int iobase) |
| 3108 | { |
| 3109 | unsigned char svrtype; |
| 3110 | |
| 3111 | #if STLDEBUG |
| 3112 | printf("stl_cd1400eiointr(panelp=%x,iobase=%x)\n", (int) panelp, |
| 3113 | iobase); |
| 3114 | #endif |
| 3115 | |
| 3116 | outb(iobase, SVRR); |
| 3117 | svrtype = inb(iobase + EREG_DATA); |
| 3118 | if (panelp->nrports > 4) { |
| 3119 | outb(iobase, (SVRR + 0x80)); |
| 3120 | svrtype |= inb(iobase + EREG_DATA); |
| 3121 | } |
| 3122 | #if STLDEBUG |
| 3123 | printf("stl_cd1400eiointr(panelp=%x,iobase=%x): svrr=%x\n", (int) panelp, iobase, svrtype); |
| 3124 | #endif |
| 3125 | |
| 3126 | if (svrtype & SVRR_RX) |
| 3127 | stl_cd1400rxisr(panelp, iobase); |
| 3128 | else if (svrtype & SVRR_TX) |
| 3129 | stl_cd1400txisr(panelp, iobase); |
| 3130 | else if (svrtype & SVRR_MDM) |
| 3131 | stl_cd1400mdmisr(panelp, iobase); |
| 3132 | } |
| 3133 | |
| 3134 | /*****************************************************************************/ |
| 3135 | |
| 3136 | /* |
| 3137 | * Interrupt service routine for cd1400 panels. |
| 3138 | */ |
| 3139 | |
| 3140 | static void stl_cd1400echintr(stlpanel_t *panelp, unsigned int iobase) |
| 3141 | { |
| 3142 | unsigned char svrtype; |
| 3143 | |
| 3144 | #if STLDEBUG |
| 3145 | printf("stl_cd1400echintr(panelp=%x,iobase=%x)\n", (int) panelp, |
| 3146 | iobase); |
| 3147 | #endif |
| 3148 | |
| 3149 | outb(iobase, SVRR); |
| 3150 | svrtype = inb(iobase + EREG_DATA); |
| 3151 | outb(iobase, (SVRR + 0x80)); |
| 3152 | svrtype |= inb(iobase + EREG_DATA); |
| 3153 | if (svrtype & SVRR_RX) |
| 3154 | stl_cd1400rxisr(panelp, iobase); |
| 3155 | else if (svrtype & SVRR_TX) |
| 3156 | stl_cd1400txisr(panelp, iobase); |
| 3157 | else if (svrtype & SVRR_MDM) |
| 3158 | stl_cd1400mdmisr(panelp, iobase); |
| 3159 | } |
| 3160 | |
| 3161 | /*****************************************************************************/ |
| 3162 | |
| 3163 | /* |
| 3164 | * Set up the cd1400 registers for a port based on the termios port |
| 3165 | * settings. |
| 3166 | */ |
| 3167 | |
| 3168 | static int stl_cd1400setport(stlport_t *portp, struct termios *tiosp) |
| 3169 | { |
| 3170 | unsigned int clkdiv; |
| 3171 | unsigned char cor1, cor2, cor3; |
| 3172 | unsigned char cor4, cor5, ccr; |
| 3173 | unsigned char srer, sreron, sreroff; |
| 3174 | unsigned char mcor1, mcor2, rtpr; |
| 3175 | unsigned char clk, div; |
| 3176 | |
| 3177 | #if STLDEBUG |
| 3178 | printf("stl_cd1400setport(portp=%x,tiosp=%x): brdnr=%d portnr=%d\n", |
| 3179 | (int) portp, (int) tiosp, portp->brdnr, portp->portnr); |
| 3180 | #endif |
| 3181 | |
| 3182 | cor1 = 0; |
| 3183 | cor2 = 0; |
| 3184 | cor3 = 0; |
| 3185 | cor4 = 0; |
| 3186 | cor5 = 0; |
| 3187 | ccr = 0; |
| 3188 | rtpr = 0; |
| 3189 | clk = 0; |
| 3190 | div = 0; |
| 3191 | mcor1 = 0; |
| 3192 | mcor2 = 0; |
| 3193 | sreron = 0; |
| 3194 | sreroff = 0; |
| 3195 | |
| 3196 | /* |
| 3197 | * Set up the RX char ignore mask with those RX error types we |
| 3198 | * can ignore. We could have used some special modes of the cd1400 |
| 3199 | * UART to help, but it is better this way because we can keep stats |
| 3200 | * on the number of each type of RX exception event. |
| 3201 | */ |
| 3202 | portp->rxignoremsk = 0; |
| 3203 | if (tiosp->c_iflag & IGNPAR) |
| 3204 | portp->rxignoremsk |= (ST_PARITY | ST_FRAMING | ST_OVERRUN); |
| 3205 | if (tiosp->c_iflag & IGNBRK) |
| 3206 | portp->rxignoremsk |= ST_BREAK; |
| 3207 | |
| 3208 | portp->rxmarkmsk = ST_OVERRUN; |
| 3209 | if (tiosp->c_iflag & (INPCK | PARMRK)) |
| 3210 | portp->rxmarkmsk |= (ST_PARITY | ST_FRAMING); |
| 3211 | if (tiosp->c_iflag & BRKINT) |
| 3212 | portp->rxmarkmsk |= ST_BREAK; |
| 3213 | |
| 3214 | /* |
| 3215 | * Go through the char size, parity and stop bits and set all the |
| 3216 | * option registers appropriately. |
| 3217 | */ |
| 3218 | switch (tiosp->c_cflag & CSIZE) { |
| 3219 | case CS5: |
| 3220 | cor1 |= COR1_CHL5; |
| 3221 | break; |
| 3222 | case CS6: |
| 3223 | cor1 |= COR1_CHL6; |
| 3224 | break; |
| 3225 | case CS7: |
| 3226 | cor1 |= COR1_CHL7; |
| 3227 | break; |
| 3228 | default: |
| 3229 | cor1 |= COR1_CHL8; |
| 3230 | break; |
| 3231 | } |
| 3232 | |
| 3233 | if (tiosp->c_cflag & CSTOPB) |
| 3234 | cor1 |= COR1_STOP2; |
| 3235 | else |
| 3236 | cor1 |= COR1_STOP1; |
| 3237 | |
| 3238 | if (tiosp->c_cflag & PARENB) { |
| 3239 | if (tiosp->c_cflag & PARODD) |
| 3240 | cor1 |= (COR1_PARENB | COR1_PARODD); |
| 3241 | else |
| 3242 | cor1 |= (COR1_PARENB | COR1_PAREVEN); |
| 3243 | } else { |
| 3244 | cor1 |= COR1_PARNONE; |
| 3245 | } |
| 3246 | |
| 3247 | /* |
| 3248 | * Set the RX FIFO threshold at 6 chars. This gives a bit of breathing |
| 3249 | * space for hardware flow control and the like. This should be set to |
| 3250 | * VMIN. Also here we will set the RX data timeout to 10ms - this should |
| 3251 | * really be based on VTIME... |
| 3252 | */ |
| 3253 | cor3 |= FIFO_RXTHRESHOLD; |
| 3254 | rtpr = 2; |
| 3255 | |
| 3256 | /* |
| 3257 | * Calculate the baud rate timers. For now we will just assume that |
| 3258 | * the input and output baud are the same. Could have used a baud |
| 3259 | * table here, but this way we can generate virtually any baud rate |
| 3260 | * we like! |
| 3261 | */ |
| 3262 | if (tiosp->c_ispeed == 0) |
| 3263 | tiosp->c_ispeed = tiosp->c_ospeed; |
| 3264 | if ((tiosp->c_ospeed < 0) || (tiosp->c_ospeed > CD1400_MAXBAUD)) |
| 3265 | return(EINVAL); |
| 3266 | |
| 3267 | if (tiosp->c_ospeed > 0) { |
| 3268 | for (clk = 0; (clk < CD1400_NUMCLKS); clk++) { |
| 3269 | clkdiv = ((portp->clk / stl_cd1400clkdivs[clk]) / |
| 3270 | tiosp->c_ospeed); |
| 3271 | if (clkdiv < 0x100) |
| 3272 | break; |
| 3273 | } |
| 3274 | div = (unsigned char) clkdiv; |
| 3275 | } |
| 3276 | |
| 3277 | /* |
| 3278 | * Check what form of modem signaling is required and set it up. |
| 3279 | */ |
| 3280 | if ((tiosp->c_cflag & CLOCAL) == 0) { |
| 3281 | mcor1 |= MCOR1_DCD; |
| 3282 | mcor2 |= MCOR2_DCD; |
| 3283 | sreron |= SRER_MODEM; |
| 3284 | } |
| 3285 | |
| 3286 | /* |
| 3287 | * Setup cd1400 enhanced modes if we can. In particular we want to |
| 3288 | * handle as much of the flow control as possbile automatically. As |
| 3289 | * well as saving a few CPU cycles it will also greatly improve flow |
| 3290 | * control reliablilty. |
| 3291 | */ |
| 3292 | if (tiosp->c_iflag & IXON) { |
| 3293 | cor2 |= COR2_TXIBE; |
| 3294 | cor3 |= COR3_SCD12; |
| 3295 | if (tiosp->c_iflag & IXANY) |
| 3296 | cor2 |= COR2_IXM; |
| 3297 | } |
| 3298 | |
| 3299 | if (tiosp->c_cflag & CCTS_OFLOW) |
| 3300 | cor2 |= COR2_CTSAE; |
| 3301 | if (tiosp->c_cflag & CRTS_IFLOW) |
| 3302 | mcor1 |= FIFO_RTSTHRESHOLD; |
| 3303 | |
| 3304 | /* |
| 3305 | * All cd1400 register values calculated so go through and set them |
| 3306 | * all up. |
| 3307 | */ |
| 3308 | #if STLDEBUG |
| 3309 | printf("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", portp->portnr, |
| 3310 | portp->panelnr, portp->brdnr); |
| 3311 | printf(" cor1=%x cor2=%x cor3=%x cor4=%x cor5=%x\n", cor1, cor2, |
| 3312 | cor3, cor4, cor5); |
| 3313 | printf(" mcor1=%x mcor2=%x rtpr=%x sreron=%x sreroff=%x\n", |
| 3314 | mcor1, mcor2, rtpr, sreron, sreroff); |
| 3315 | printf(" tcor=%x tbpr=%x rcor=%x rbpr=%x\n", clk, div, clk, div); |
| 3316 | printf(" schr1=%x schr2=%x schr3=%x schr4=%x\n", |
| 3317 | tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP], tiosp->c_cc[VSTART], |
| 3318 | tiosp->c_cc[VSTOP]); |
| 3319 | #endif |
| 3320 | |
| 3321 | crit_enter(); |
| 3322 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3323 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3)); |
| 3324 | srer = stl_cd1400getreg(portp, SRER); |
| 3325 | stl_cd1400setreg(portp, SRER, 0); |
| 3326 | ccr += stl_cd1400updatereg(portp, COR1, cor1); |
| 3327 | ccr += stl_cd1400updatereg(portp, COR2, cor2); |
| 3328 | ccr += stl_cd1400updatereg(portp, COR3, cor3); |
| 3329 | if (ccr) { |
| 3330 | stl_cd1400ccrwait(portp); |
| 3331 | stl_cd1400setreg(portp, CCR, CCR_CORCHANGE); |
| 3332 | } |
| 3333 | stl_cd1400setreg(portp, COR4, cor4); |
| 3334 | stl_cd1400setreg(portp, COR5, cor5); |
| 3335 | stl_cd1400setreg(portp, MCOR1, mcor1); |
| 3336 | stl_cd1400setreg(portp, MCOR2, mcor2); |
| 3337 | if (tiosp->c_ospeed == 0) { |
| 3338 | stl_cd1400setreg(portp, MSVR1, 0); |
| 3339 | } else { |
| 3340 | stl_cd1400setreg(portp, MSVR1, MSVR1_DTR); |
| 3341 | stl_cd1400setreg(portp, TCOR, clk); |
| 3342 | stl_cd1400setreg(portp, TBPR, div); |
| 3343 | stl_cd1400setreg(portp, RCOR, clk); |
| 3344 | stl_cd1400setreg(portp, RBPR, div); |
| 3345 | } |
| 3346 | stl_cd1400setreg(portp, SCHR1, tiosp->c_cc[VSTART]); |
| 3347 | stl_cd1400setreg(portp, SCHR2, tiosp->c_cc[VSTOP]); |
| 3348 | stl_cd1400setreg(portp, SCHR3, tiosp->c_cc[VSTART]); |
| 3349 | stl_cd1400setreg(portp, SCHR4, tiosp->c_cc[VSTOP]); |
| 3350 | stl_cd1400setreg(portp, RTPR, rtpr); |
| 3351 | mcor1 = stl_cd1400getreg(portp, MSVR1); |
| 3352 | if (mcor1 & MSVR1_DCD) |
| 3353 | portp->sigs |= TIOCM_CD; |
| 3354 | else |
| 3355 | portp->sigs &= ~TIOCM_CD; |
| 3356 | stl_cd1400setreg(portp, SRER, ((srer & ~sreroff) | sreron)); |
| 3357 | BRDDISABLE(portp->brdnr); |
| 3358 | portp->state &= ~(ASY_RTSFLOWMODE | ASY_CTSFLOWMODE); |
| 3359 | portp->state |= ((tiosp->c_cflag & CRTS_IFLOW) ? ASY_RTSFLOWMODE : 0); |
| 3360 | portp->state |= ((tiosp->c_cflag & CCTS_OFLOW) ? ASY_CTSFLOWMODE : 0); |
| 3361 | stl_ttyoptim(portp, tiosp); |
| 3362 | crit_exit(); |
| 3363 | |
| 3364 | return(0); |
| 3365 | } |
| 3366 | |
| 3367 | /*****************************************************************************/ |
| 3368 | |
| 3369 | /* |
| 3370 | * Action the flow control as required. The hw and sw args inform the |
| 3371 | * routine what flow control methods it should try. |
| 3372 | */ |
| 3373 | |
| 3374 | static void stl_cd1400sendflow(stlport_t *portp, int hw, int sw) |
| 3375 | { |
| 3376 | |
| 3377 | #if STLDEBUG |
| 3378 | printf("stl_cd1400sendflow(portp=%x,hw=%d,sw=%d)\n", |
| 3379 | (int) portp, hw, sw); |
| 3380 | #endif |
| 3381 | |
| 3382 | crit_enter(); |
| 3383 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3384 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); |
| 3385 | |
| 3386 | if (sw >= 0) { |
| 3387 | stl_cd1400ccrwait(portp); |
| 3388 | if (sw) { |
| 3389 | stl_cd1400setreg(portp, CCR, CCR_SENDSCHR2); |
| 3390 | portp->stats.rxxoff++; |
| 3391 | } else { |
| 3392 | stl_cd1400setreg(portp, CCR, CCR_SENDSCHR1); |
| 3393 | portp->stats.rxxon++; |
| 3394 | } |
| 3395 | stl_cd1400ccrwait(portp); |
| 3396 | } |
| 3397 | |
| 3398 | if (hw == 0) { |
| 3399 | portp->state |= ASY_RTSFLOW; |
| 3400 | stl_cd1400setreg(portp, MCOR1, |
| 3401 | (stl_cd1400getreg(portp, MCOR1) & 0xf0)); |
| 3402 | stl_cd1400setreg(portp, MSVR2, 0); |
| 3403 | portp->stats.rxrtsoff++; |
| 3404 | } else if (hw > 0) { |
| 3405 | portp->state &= ~ASY_RTSFLOW; |
| 3406 | stl_cd1400setreg(portp, MSVR2, MSVR2_RTS); |
| 3407 | stl_cd1400setreg(portp, MCOR1, |
| 3408 | (stl_cd1400getreg(portp, MCOR1) | FIFO_RTSTHRESHOLD)); |
| 3409 | portp->stats.rxrtson++; |
| 3410 | } |
| 3411 | |
| 3412 | BRDDISABLE(portp->brdnr); |
| 3413 | crit_exit(); |
| 3414 | } |
| 3415 | |
| 3416 | /*****************************************************************************/ |
| 3417 | |
| 3418 | /* |
| 3419 | * Return the current state of data flow on this port. This is only |
| 3420 | * really interresting when determining if data has fully completed |
| 3421 | * transmission or not... This is easy for the cd1400, it accurately |
| 3422 | * maintains the busy port flag. |
| 3423 | */ |
| 3424 | |
| 3425 | static int stl_cd1400datastate(stlport_t *portp) |
| 3426 | { |
| 3427 | #if STLDEBUG |
| 3428 | printf("stl_cd1400datastate(portp=%x)\n", (int) portp); |
| 3429 | #endif |
| 3430 | |
| 3431 | if (portp == (stlport_t *) NULL) |
| 3432 | return(0); |
| 3433 | |
| 3434 | return((portp->state & ASY_TXBUSY) ? 1 : 0); |
| 3435 | } |
| 3436 | |
| 3437 | /*****************************************************************************/ |
| 3438 | |
| 3439 | /* |
| 3440 | * Set the state of the DTR and RTS signals. Got to do some extra |
| 3441 | * work here to deal hardware flow control. |
| 3442 | */ |
| 3443 | |
| 3444 | static void stl_cd1400setsignals(stlport_t *portp, int dtr, int rts) |
| 3445 | { |
| 3446 | unsigned char msvr1, msvr2; |
| 3447 | |
| 3448 | #if STLDEBUG |
| 3449 | printf("stl_cd1400setsignals(portp=%x,dtr=%d,rts=%d)\n", (int) portp, |
| 3450 | dtr, rts); |
| 3451 | #endif |
| 3452 | |
| 3453 | msvr1 = 0; |
| 3454 | msvr2 = 0; |
| 3455 | if (dtr > 0) |
| 3456 | msvr1 = MSVR1_DTR; |
| 3457 | if (rts > 0) |
| 3458 | msvr2 = MSVR2_RTS; |
| 3459 | |
| 3460 | crit_enter(); |
| 3461 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3462 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); |
| 3463 | if (rts >= 0) { |
| 3464 | if (portp->tty.t_cflag & CRTS_IFLOW) { |
| 3465 | if (rts == 0) { |
| 3466 | stl_cd1400setreg(portp, MCOR1, |
| 3467 | (stl_cd1400getreg(portp, MCOR1) & 0xf0)); |
| 3468 | portp->stats.rxrtsoff++; |
| 3469 | } else { |
| 3470 | stl_cd1400setreg(portp, MCOR1, |
| 3471 | (stl_cd1400getreg(portp, MCOR1) | |
| 3472 | FIFO_RTSTHRESHOLD)); |
| 3473 | portp->stats.rxrtson++; |
| 3474 | } |
| 3475 | } |
| 3476 | stl_cd1400setreg(portp, MSVR2, msvr2); |
| 3477 | } |
| 3478 | if (dtr >= 0) |
| 3479 | stl_cd1400setreg(portp, MSVR1, msvr1); |
| 3480 | BRDDISABLE(portp->brdnr); |
| 3481 | crit_exit(); |
| 3482 | } |
| 3483 | |
| 3484 | /*****************************************************************************/ |
| 3485 | |
| 3486 | /* |
| 3487 | * Get the state of the signals. |
| 3488 | */ |
| 3489 | |
| 3490 | static int stl_cd1400getsignals(stlport_t *portp) |
| 3491 | { |
| 3492 | unsigned char msvr1, msvr2; |
| 3493 | int sigs; |
| 3494 | |
| 3495 | #if STLDEBUG |
| 3496 | printf("stl_cd1400getsignals(portp=%x)\n", (int) portp); |
| 3497 | #endif |
| 3498 | |
| 3499 | crit_enter(); |
| 3500 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3501 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3)); |
| 3502 | msvr1 = stl_cd1400getreg(portp, MSVR1); |
| 3503 | msvr2 = stl_cd1400getreg(portp, MSVR2); |
| 3504 | BRDDISABLE(portp->brdnr); |
| 3505 | crit_exit(); |
| 3506 | |
| 3507 | sigs = 0; |
| 3508 | sigs |= (msvr1 & MSVR1_DCD) ? TIOCM_CD : 0; |
| 3509 | sigs |= (msvr1 & MSVR1_CTS) ? TIOCM_CTS : 0; |
| 3510 | sigs |= (msvr1 & MSVR1_DTR) ? TIOCM_DTR : 0; |
| 3511 | sigs |= (msvr2 & MSVR2_RTS) ? TIOCM_RTS : 0; |
| 3512 | #if 0 |
| 3513 | sigs |= (msvr1 & MSVR1_RI) ? TIOCM_RI : 0; |
| 3514 | sigs |= (msvr1 & MSVR1_DSR) ? TIOCM_DSR : 0; |
| 3515 | #else |
| 3516 | sigs |= TIOCM_DSR; |
| 3517 | #endif |
| 3518 | return(sigs); |
| 3519 | } |
| 3520 | |
| 3521 | /*****************************************************************************/ |
| 3522 | |
| 3523 | /* |
| 3524 | * Enable or disable the Transmitter and/or Receiver. |
| 3525 | */ |
| 3526 | |
| 3527 | static void stl_cd1400enablerxtx(stlport_t *portp, int rx, int tx) |
| 3528 | { |
| 3529 | unsigned char ccr; |
| 3530 | |
| 3531 | #if STLDEBUG |
| 3532 | printf("stl_cd1400enablerxtx(portp=%x,rx=%d,tx=%d)\n", |
| 3533 | (int) portp, rx, tx); |
| 3534 | #endif |
| 3535 | |
| 3536 | ccr = 0; |
| 3537 | if (tx == 0) |
| 3538 | ccr |= CCR_TXDISABLE; |
| 3539 | else if (tx > 0) |
| 3540 | ccr |= CCR_TXENABLE; |
| 3541 | if (rx == 0) |
| 3542 | ccr |= CCR_RXDISABLE; |
| 3543 | else if (rx > 0) |
| 3544 | ccr |= CCR_RXENABLE; |
| 3545 | |
| 3546 | crit_enter(); |
| 3547 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3548 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); |
| 3549 | stl_cd1400ccrwait(portp); |
| 3550 | stl_cd1400setreg(portp, CCR, ccr); |
| 3551 | stl_cd1400ccrwait(portp); |
| 3552 | BRDDISABLE(portp->brdnr); |
| 3553 | crit_exit(); |
| 3554 | } |
| 3555 | |
| 3556 | /*****************************************************************************/ |
| 3557 | |
| 3558 | /* |
| 3559 | * Start or stop the Transmitter and/or Receiver. |
| 3560 | */ |
| 3561 | |
| 3562 | static void stl_cd1400startrxtx(stlport_t *portp, int rx, int tx) |
| 3563 | { |
| 3564 | unsigned char sreron, sreroff; |
| 3565 | |
| 3566 | #if STLDEBUG |
| 3567 | printf("stl_cd1400startrxtx(portp=%x,rx=%d,tx=%d)\n", |
| 3568 | (int) portp, rx, tx); |
| 3569 | #endif |
| 3570 | |
| 3571 | sreron = 0; |
| 3572 | sreroff = 0; |
| 3573 | if (tx == 0) |
| 3574 | sreroff |= (SRER_TXDATA | SRER_TXEMPTY); |
| 3575 | else if (tx == 1) |
| 3576 | sreron |= SRER_TXDATA; |
| 3577 | else if (tx >= 2) |
| 3578 | sreron |= SRER_TXEMPTY; |
| 3579 | if (rx == 0) |
| 3580 | sreroff |= SRER_RXDATA; |
| 3581 | else if (rx > 0) |
| 3582 | sreron |= SRER_RXDATA; |
| 3583 | |
| 3584 | crit_enter(); |
| 3585 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3586 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3)); |
| 3587 | stl_cd1400setreg(portp, SRER, |
| 3588 | ((stl_cd1400getreg(portp, SRER) & ~sreroff) | sreron)); |
| 3589 | BRDDISABLE(portp->brdnr); |
| 3590 | if (tx > 0) { |
| 3591 | portp->state |= ASY_TXBUSY; |
| 3592 | portp->tty.t_state |= TS_BUSY; |
| 3593 | } |
| 3594 | crit_exit(); |
| 3595 | } |
| 3596 | |
| 3597 | /*****************************************************************************/ |
| 3598 | |
| 3599 | /* |
| 3600 | * Disable all interrupts from this port. |
| 3601 | */ |
| 3602 | |
| 3603 | static void stl_cd1400disableintrs(stlport_t *portp) |
| 3604 | { |
| 3605 | |
| 3606 | #if STLDEBUG |
| 3607 | printf("stl_cd1400disableintrs(portp=%x)\n", (int) portp); |
| 3608 | #endif |
| 3609 | |
| 3610 | crit_enter(); |
| 3611 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3612 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3)); |
| 3613 | stl_cd1400setreg(portp, SRER, 0); |
| 3614 | BRDDISABLE(portp->brdnr); |
| 3615 | crit_exit(); |
| 3616 | } |
| 3617 | |
| 3618 | /*****************************************************************************/ |
| 3619 | |
| 3620 | static void stl_cd1400sendbreak(stlport_t *portp, long len) |
| 3621 | { |
| 3622 | |
| 3623 | #if STLDEBUG |
| 3624 | printf("stl_cd1400sendbreak(portp=%x,len=%d)\n", (int) portp, |
| 3625 | (int) len); |
| 3626 | #endif |
| 3627 | |
| 3628 | crit_enter(); |
| 3629 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3630 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3)); |
| 3631 | stl_cd1400setreg(portp, COR2, |
| 3632 | (stl_cd1400getreg(portp, COR2) | COR2_ETC)); |
| 3633 | stl_cd1400setreg(portp, SRER, |
| 3634 | ((stl_cd1400getreg(portp, SRER) & ~SRER_TXDATA) | |
| 3635 | SRER_TXEMPTY)); |
| 3636 | BRDDISABLE(portp->brdnr); |
| 3637 | if (len > 0) { |
| 3638 | len = len / 5; |
| 3639 | portp->brklen = (len > 255) ? 255 : len; |
| 3640 | } else { |
| 3641 | portp->brklen = len; |
| 3642 | } |
| 3643 | crit_exit(); |
| 3644 | portp->stats.txbreaks++; |
| 3645 | } |
| 3646 | |
| 3647 | /*****************************************************************************/ |
| 3648 | |
| 3649 | /* |
| 3650 | * Try and find and initialize all the ports on a panel. We don't care |
| 3651 | * what sort of board these ports are on - since the port io registers |
| 3652 | * are almost identical when dealing with ports. |
| 3653 | */ |
| 3654 | |
| 3655 | static void stl_cd1400portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp) |
| 3656 | { |
| 3657 | #if STLDEBUG |
| 3658 | printf("stl_cd1400portinit(brdp=%x,panelp=%x,portp=%x)\n", |
| 3659 | (int) brdp, (int) panelp, (int) portp); |
| 3660 | #endif |
| 3661 | |
| 3662 | if ((brdp == (stlbrd_t *) NULL) || (panelp == (stlpanel_t *) NULL) || |
| 3663 | (portp == (stlport_t *) NULL)) |
| 3664 | return; |
| 3665 | |
| 3666 | portp->ioaddr = panelp->iobase + (((brdp->brdtype == BRD_ECHPCI) || |
| 3667 | (portp->portnr < 8)) ? 0 : EREG_BANKSIZE); |
| 3668 | portp->uartaddr = (portp->portnr & 0x04) << 5; |
| 3669 | portp->pagenr = panelp->pagenr + (portp->portnr >> 3); |
| 3670 | |
| 3671 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3672 | stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3)); |
| 3673 | stl_cd1400setreg(portp, LIVR, (portp->portnr << 3)); |
| 3674 | portp->hwid = stl_cd1400getreg(portp, GFRCR); |
| 3675 | BRDDISABLE(portp->brdnr); |
| 3676 | } |
| 3677 | |
| 3678 | /*****************************************************************************/ |
| 3679 | |
| 3680 | /* |
| 3681 | * Inbitialize the UARTs in a panel. We don't care what sort of board |
| 3682 | * these ports are on - since the port io registers are almost |
| 3683 | * identical when dealing with ports. |
| 3684 | */ |
| 3685 | |
| 3686 | static int stl_cd1400panelinit(stlbrd_t *brdp, stlpanel_t *panelp) |
| 3687 | { |
| 3688 | unsigned int gfrcr; |
| 3689 | int chipmask, i, j; |
| 3690 | int nrchips, uartaddr, ioaddr; |
| 3691 | |
| 3692 | #if STLDEBUG |
| 3693 | printf("stl_cd1400panelinit(brdp=%x,panelp=%x)\n", (int) brdp, |
| 3694 | (int) panelp); |
| 3695 | #endif |
| 3696 | |
| 3697 | BRDENABLE(panelp->brdnr, panelp->pagenr); |
| 3698 | |
| 3699 | /* |
| 3700 | * Check that each chip is present and started up OK. |
| 3701 | */ |
| 3702 | chipmask = 0; |
| 3703 | nrchips = panelp->nrports / CD1400_PORTS; |
| 3704 | for (i = 0; (i < nrchips); i++) { |
| 3705 | if (brdp->brdtype == BRD_ECHPCI) { |
| 3706 | outb((panelp->pagenr + (i >> 1)), brdp->ioctrl); |
| 3707 | ioaddr = panelp->iobase; |
| 3708 | } else { |
| 3709 | ioaddr = panelp->iobase + (EREG_BANKSIZE * (i >> 1)); |
| 3710 | } |
| 3711 | uartaddr = (i & 0x01) ? 0x080 : 0; |
| 3712 | outb(ioaddr, (GFRCR + uartaddr)); |
| 3713 | outb((ioaddr + EREG_DATA), 0); |
| 3714 | outb(ioaddr, (CCR + uartaddr)); |
| 3715 | outb((ioaddr + EREG_DATA), CCR_RESETFULL); |
| 3716 | outb((ioaddr + EREG_DATA), CCR_RESETFULL); |
| 3717 | outb(ioaddr, (GFRCR + uartaddr)); |
| 3718 | for (j = 0; (j < CCR_MAXWAIT); j++) { |
| 3719 | if ((gfrcr = inb(ioaddr + EREG_DATA)) != 0) |
| 3720 | break; |
| 3721 | } |
| 3722 | if ((j >= CCR_MAXWAIT) || (gfrcr < 0x40) || (gfrcr > 0x60)) { |
| 3723 | printf("STALLION: cd1400 not responding, " |
| 3724 | "board=%d panel=%d chip=%d\n", panelp->brdnr, |
| 3725 | panelp->panelnr, i); |
| 3726 | continue; |
| 3727 | } |
| 3728 | chipmask |= (0x1 << i); |
| 3729 | outb(ioaddr, (PPR + uartaddr)); |
| 3730 | outb((ioaddr + EREG_DATA), PPR_SCALAR); |
| 3731 | } |
| 3732 | |
| 3733 | |
| 3734 | BRDDISABLE(panelp->brdnr); |
| 3735 | return(chipmask); |
| 3736 | } |
| 3737 | |
| 3738 | /*****************************************************************************/ |
| 3739 | /* SC26198 HARDWARE FUNCTIONS */ |
| 3740 | /*****************************************************************************/ |
| 3741 | |
| 3742 | /* |
| 3743 | * These functions get/set/update the registers of the sc26198 UARTs. |
| 3744 | * Access to the sc26198 registers is via an address/data io port pair. |
| 3745 | * (Maybe should make this inline...) |
| 3746 | */ |
| 3747 | |
| 3748 | static int stl_sc26198getreg(stlport_t *portp, int regnr) |
| 3749 | { |
| 3750 | outb((portp->ioaddr + XP_ADDR), (regnr | portp->uartaddr)); |
| 3751 | return(inb(portp->ioaddr + XP_DATA)); |
| 3752 | } |
| 3753 | |
| 3754 | static void stl_sc26198setreg(stlport_t *portp, int regnr, int value) |
| 3755 | { |
| 3756 | outb((portp->ioaddr + XP_ADDR), (regnr | portp->uartaddr)); |
| 3757 | outb((portp->ioaddr + XP_DATA), value); |
| 3758 | } |
| 3759 | |
| 3760 | static int stl_sc26198updatereg(stlport_t *portp, int regnr, int value) |
| 3761 | { |
| 3762 | outb((portp->ioaddr + XP_ADDR), (regnr | portp->uartaddr)); |
| 3763 | if (inb(portp->ioaddr + XP_DATA) != value) { |
| 3764 | outb((portp->ioaddr + XP_DATA), value); |
| 3765 | return(1); |
| 3766 | } |
| 3767 | return(0); |
| 3768 | } |
| 3769 | |
| 3770 | /*****************************************************************************/ |
| 3771 | |
| 3772 | /* |
| 3773 | * Functions to get and set the sc26198 global registers. |
| 3774 | */ |
| 3775 | |
| 3776 | static int stl_sc26198getglobreg(stlport_t *portp, int regnr) |
| 3777 | { |
| 3778 | outb((portp->ioaddr + XP_ADDR), regnr); |
| 3779 | return(inb(portp->ioaddr + XP_DATA)); |
| 3780 | } |
| 3781 | |
| 3782 | #if 0 |
| 3783 | static void stl_sc26198setglobreg(stlport_t *portp, int regnr, int value) |
| 3784 | { |
| 3785 | outb((portp->ioaddr + XP_ADDR), regnr); |
| 3786 | outb((portp->ioaddr + XP_DATA), value); |
| 3787 | } |
| 3788 | #endif |
| 3789 | |
| 3790 | /*****************************************************************************/ |
| 3791 | |
| 3792 | /* |
| 3793 | * Inbitialize the UARTs in a panel. We don't care what sort of board |
| 3794 | * these ports are on - since the port io registers are almost |
| 3795 | * identical when dealing with ports. |
| 3796 | */ |
| 3797 | |
| 3798 | static int stl_sc26198panelinit(stlbrd_t *brdp, stlpanel_t *panelp) |
| 3799 | { |
| 3800 | int chipmask, i; |
| 3801 | int nrchips, ioaddr; |
| 3802 | |
| 3803 | #if STLDEBUG |
| 3804 | printf("stl_sc26198panelinit(brdp=%x,panelp=%x)\n", (int) brdp, |
| 3805 | (int) panelp); |
| 3806 | #endif |
| 3807 | |
| 3808 | BRDENABLE(panelp->brdnr, panelp->pagenr); |
| 3809 | |
| 3810 | /* |
| 3811 | * Check that each chip is present and started up OK. |
| 3812 | */ |
| 3813 | chipmask = 0; |
| 3814 | nrchips = (panelp->nrports + 4) / SC26198_PORTS; |
| 3815 | if (brdp->brdtype == BRD_ECHPCI) |
| 3816 | outb(brdp->ioctrl, panelp->pagenr); |
| 3817 | |
| 3818 | for (i = 0; (i < nrchips); i++) { |
| 3819 | ioaddr = panelp->iobase + (i * 4); |
| 3820 | outb((ioaddr + XP_ADDR), SCCR); |
| 3821 | outb((ioaddr + XP_DATA), CR_RESETALL); |
| 3822 | outb((ioaddr + XP_ADDR), TSTR); |
| 3823 | if (inb(ioaddr + XP_DATA) != 0) { |
| 3824 | printf("STALLION: sc26198 not responding, " |
| 3825 | "board=%d panel=%d chip=%d\n", panelp->brdnr, |
| 3826 | panelp->panelnr, i); |
| 3827 | continue; |
| 3828 | } |
| 3829 | chipmask |= (0x1 << i); |
| 3830 | outb((ioaddr + XP_ADDR), GCCR); |
| 3831 | outb((ioaddr + XP_DATA), GCCR_IVRTYPCHANACK); |
| 3832 | outb((ioaddr + XP_ADDR), WDTRCR); |
| 3833 | outb((ioaddr + XP_DATA), 0xff); |
| 3834 | } |
| 3835 | |
| 3836 | BRDDISABLE(panelp->brdnr); |
| 3837 | return(chipmask); |
| 3838 | } |
| 3839 | |
| 3840 | /*****************************************************************************/ |
| 3841 | |
| 3842 | /* |
| 3843 | * Initialize hardware specific port registers. |
| 3844 | */ |
| 3845 | |
| 3846 | static void stl_sc26198portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp) |
| 3847 | { |
| 3848 | #if STLDEBUG |
| 3849 | printf("stl_sc26198portinit(brdp=%x,panelp=%x,portp=%x)\n", |
| 3850 | (int) brdp, (int) panelp, (int) portp); |
| 3851 | #endif |
| 3852 | |
| 3853 | if ((brdp == (stlbrd_t *) NULL) || (panelp == (stlpanel_t *) NULL) || |
| 3854 | (portp == (stlport_t *) NULL)) |
| 3855 | return; |
| 3856 | |
| 3857 | portp->ioaddr = panelp->iobase + ((portp->portnr < 8) ? 0 : 4); |
| 3858 | portp->uartaddr = (portp->portnr & 0x07) << 4; |
| 3859 | portp->pagenr = panelp->pagenr; |
| 3860 | portp->hwid = 0x1; |
| 3861 | |
| 3862 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 3863 | stl_sc26198setreg(portp, IOPCR, IOPCR_SETSIGS); |
| 3864 | BRDDISABLE(portp->brdnr); |
| 3865 | } |
| 3866 | |
| 3867 | /*****************************************************************************/ |
| 3868 | |
| 3869 | /* |
| 3870 | * Set up the sc26198 registers for a port based on the termios port |
| 3871 | * settings. |
| 3872 | */ |
| 3873 | |
| 3874 | static int stl_sc26198setport(stlport_t *portp, struct termios *tiosp) |
| 3875 | { |
| 3876 | unsigned char mr0, mr1, mr2, clk; |
| 3877 | unsigned char imron, imroff, iopr, ipr; |
| 3878 | |
| 3879 | #if STLDEBUG |
| 3880 | printf("stl_sc26198setport(portp=%x,tiosp=%x): brdnr=%d portnr=%d\n", |
| 3881 | (int) portp, (int) tiosp, portp->brdnr, portp->portnr); |
| 3882 | #endif |
| 3883 | |
| 3884 | mr0 = 0; |
| 3885 | mr1 = 0; |
| 3886 | mr2 = 0; |
| 3887 | clk = 0; |
| 3888 | iopr = 0; |
| 3889 | imron = 0; |
| 3890 | imroff = 0; |
| 3891 | |
| 3892 | /* |
| 3893 | * Set up the RX char ignore mask with those RX error types we |
| 3894 | * can ignore. |
| 3895 | */ |
| 3896 | portp->rxignoremsk = 0; |
| 3897 | if (tiosp->c_iflag & IGNPAR) |
| 3898 | portp->rxignoremsk |= (SR_RXPARITY | SR_RXFRAMING | |
| 3899 | SR_RXOVERRUN); |
| 3900 | if (tiosp->c_iflag & IGNBRK) |
| 3901 | portp->rxignoremsk |= SR_RXBREAK; |
| 3902 | |
| 3903 | portp->rxmarkmsk = SR_RXOVERRUN; |
| 3904 | if (tiosp->c_iflag & (INPCK | PARMRK)) |
| 3905 | portp->rxmarkmsk |= (SR_RXPARITY | SR_RXFRAMING); |
| 3906 | if (tiosp->c_iflag & BRKINT) |
| 3907 | portp->rxmarkmsk |= SR_RXBREAK; |
| 3908 | |
| 3909 | /* |
| 3910 | * Go through the char size, parity and stop bits and set all the |
| 3911 | * option registers appropriately. |
| 3912 | */ |
| 3913 | switch (tiosp->c_cflag & CSIZE) { |
| 3914 | case CS5: |
| 3915 | mr1 |= MR1_CS5; |
| 3916 | break; |
| 3917 | case CS6: |
| 3918 | mr1 |= MR1_CS6; |
| 3919 | break; |
| 3920 | case CS7: |
| 3921 | mr1 |= MR1_CS7; |
| 3922 | break; |
| 3923 | default: |
| 3924 | mr1 |= MR1_CS8; |
| 3925 | break; |
| 3926 | } |
| 3927 | |
| 3928 | if (tiosp->c_cflag & CSTOPB) |
| 3929 | mr2 |= MR2_STOP2; |
| 3930 | else |
| 3931 | mr2 |= MR2_STOP1; |
| 3932 | |
| 3933 | if (tiosp->c_cflag & PARENB) { |
| 3934 | if (tiosp->c_cflag & PARODD) |
| 3935 | mr1 |= (MR1_PARENB | MR1_PARODD); |
| 3936 | else |
| 3937 | mr1 |= (MR1_PARENB | MR1_PAREVEN); |
| 3938 | } else { |
| 3939 | mr1 |= MR1_PARNONE; |
| 3940 | } |
| 3941 | |
| 3942 | mr1 |= MR1_ERRBLOCK; |
| 3943 | |
| 3944 | /* |
| 3945 | * Set the RX FIFO threshold at 8 chars. This gives a bit of breathing |
| 3946 | * space for hardware flow control and the like. This should be set to |
| 3947 | * VMIN. |
| 3948 | */ |
| 3949 | mr2 |= MR2_RXFIFOHALF; |
| 3950 | |
| 3951 | /* |
| 3952 | * Calculate the baud rate timers. For now we will just assume that |
| 3953 | * the input and output baud are the same. The sc26198 has a fixed |
| 3954 | * baud rate table, so only discrete baud rates possible. |
| 3955 | */ |
| 3956 | if (tiosp->c_ispeed == 0) |
| 3957 | tiosp->c_ispeed = tiosp->c_ospeed; |
| 3958 | if ((tiosp->c_ospeed < 0) || (tiosp->c_ospeed > SC26198_MAXBAUD)) |
| 3959 | return(EINVAL); |
| 3960 | |
| 3961 | if (tiosp->c_ospeed > 0) { |
| 3962 | for (clk = 0; (clk < SC26198_NRBAUDS); clk++) { |
| 3963 | if (tiosp->c_ospeed <= sc26198_baudtable[clk]) |
| 3964 | break; |
| 3965 | } |
| 3966 | } |
| 3967 | |
| 3968 | /* |
| 3969 | * Check what form of modem signaling is required and set it up. |
| 3970 | */ |
| 3971 | if ((tiosp->c_cflag & CLOCAL) == 0) { |
| 3972 | iopr |= IOPR_DCDCOS; |
| 3973 | imron |= IR_IOPORT; |
| 3974 | } |
| 3975 | |
| 3976 | /* |
| 3977 | * Setup sc26198 enhanced modes if we can. In particular we want to |
| 3978 | * handle as much of the flow control as possible automatically. As |
| 3979 | * well as saving a few CPU cycles it will also greatly improve flow |
| 3980 | * control reliability. |
| 3981 | */ |
| 3982 | if (tiosp->c_iflag & IXON) { |
| 3983 | mr0 |= MR0_SWFTX | MR0_SWFT; |
| 3984 | imron |= IR_XONXOFF; |
| 3985 | } else { |
| 3986 | imroff |= IR_XONXOFF; |
| 3987 | } |
| 3988 | #if 0 |
| 3989 | if (tiosp->c_iflag & IXOFF) |
| 3990 | mr0 |= MR0_SWFRX; |
| 3991 | #endif |
| 3992 | |
| 3993 | if (tiosp->c_cflag & CCTS_OFLOW) |
| 3994 | mr2 |= MR2_AUTOCTS; |
| 3995 | if (tiosp->c_cflag & CRTS_IFLOW) |
| 3996 | mr1 |= MR1_AUTORTS; |
| 3997 | |
| 3998 | /* |
| 3999 | * All sc26198 register values calculated so go through and set |
| 4000 | * them all up. |
| 4001 | */ |
| 4002 | |
| 4003 | #if STLDEBUG |
| 4004 | printf("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", portp->portnr, |
| 4005 | portp->panelnr, portp->brdnr); |
| 4006 | printf(" mr0=%x mr1=%x mr2=%x clk=%x\n", mr0, mr1, mr2, clk); |
| 4007 | printf(" iopr=%x imron=%x imroff=%x\n", iopr, imron, imroff); |
| 4008 | printf(" schr1=%x schr2=%x schr3=%x schr4=%x\n", |
| 4009 | tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP], |
| 4010 | tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP]); |
| 4011 | #endif |
| 4012 | |
| 4013 | crit_enter(); |
| 4014 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4015 | stl_sc26198setreg(portp, IMR, 0); |
| 4016 | stl_sc26198updatereg(portp, MR0, mr0); |
| 4017 | stl_sc26198updatereg(portp, MR1, mr1); |
| 4018 | stl_sc26198setreg(portp, SCCR, CR_RXERRBLOCK); |
| 4019 | stl_sc26198updatereg(portp, MR2, mr2); |
| 4020 | iopr = (stl_sc26198getreg(portp, IOPIOR) & ~IPR_CHANGEMASK) | iopr; |
| 4021 | if (tiosp->c_ospeed == 0) { |
| 4022 | iopr &= ~IPR_DTR; |
| 4023 | } else { |
| 4024 | iopr |= IPR_DTR; |
| 4025 | stl_sc26198setreg(portp, TXCSR, clk); |
| 4026 | stl_sc26198setreg(portp, RXCSR, clk); |
| 4027 | } |
| 4028 | stl_sc26198updatereg(portp, IOPIOR, iopr); |
| 4029 | stl_sc26198setreg(portp, XONCR, tiosp->c_cc[VSTART]); |
| 4030 | stl_sc26198setreg(portp, XOFFCR, tiosp->c_cc[VSTOP]); |
| 4031 | ipr = stl_sc26198getreg(portp, IPR); |
| 4032 | if (ipr & IPR_DCD) |
| 4033 | portp->sigs &= ~TIOCM_CD; |
| 4034 | else |
| 4035 | portp->sigs |= TIOCM_CD; |
| 4036 | portp->imr = (portp->imr & ~imroff) | imron; |
| 4037 | stl_sc26198setreg(portp, IMR, portp->imr); |
| 4038 | BRDDISABLE(portp->brdnr); |
| 4039 | portp->state &= ~(ASY_RTSFLOWMODE | ASY_CTSFLOWMODE); |
| 4040 | portp->state |= ((tiosp->c_cflag & CRTS_IFLOW) ? ASY_RTSFLOWMODE : 0); |
| 4041 | portp->state |= ((tiosp->c_cflag & CCTS_OFLOW) ? ASY_CTSFLOWMODE : 0); |
| 4042 | stl_ttyoptim(portp, tiosp); |
| 4043 | crit_exit(); |
| 4044 | |
| 4045 | return(0); |
| 4046 | } |
| 4047 | |
| 4048 | /*****************************************************************************/ |
| 4049 | |
| 4050 | /* |
| 4051 | * Set the state of the DTR and RTS signals. |
| 4052 | */ |
| 4053 | |
| 4054 | static void stl_sc26198setsignals(stlport_t *portp, int dtr, int rts) |
| 4055 | { |
| 4056 | unsigned char iopioron, iopioroff; |
| 4057 | |
| 4058 | #if STLDEBUG |
| 4059 | printf("stl_sc26198setsignals(portp=%x,dtr=%d,rts=%d)\n", |
| 4060 | (int) portp, dtr, rts); |
| 4061 | #endif |
| 4062 | |
| 4063 | iopioron = 0; |
| 4064 | iopioroff = 0; |
| 4065 | if (dtr == 0) |
| 4066 | iopioroff |= IPR_DTR; |
| 4067 | else if (dtr > 0) |
| 4068 | iopioron |= IPR_DTR; |
| 4069 | if (rts == 0) |
| 4070 | iopioroff |= IPR_RTS; |
| 4071 | else if (rts > 0) |
| 4072 | iopioron |= IPR_RTS; |
| 4073 | |
| 4074 | crit_enter(); |
| 4075 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4076 | if ((rts >= 0) && (portp->tty.t_cflag & CRTS_IFLOW)) { |
| 4077 | if (rts == 0) { |
| 4078 | stl_sc26198setreg(portp, MR1, |
| 4079 | (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS)); |
| 4080 | portp->stats.rxrtsoff++; |
| 4081 | } else { |
| 4082 | stl_sc26198setreg(portp, MR1, |
| 4083 | (stl_sc26198getreg(portp, MR1) | MR1_AUTORTS)); |
| 4084 | portp->stats.rxrtson++; |
| 4085 | } |
| 4086 | } |
| 4087 | stl_sc26198setreg(portp, IOPIOR, |
| 4088 | ((stl_sc26198getreg(portp, IOPIOR) & ~iopioroff) | iopioron)); |
| 4089 | BRDDISABLE(portp->brdnr); |
| 4090 | crit_exit(); |
| 4091 | } |
| 4092 | |
| 4093 | /*****************************************************************************/ |
| 4094 | |
| 4095 | /* |
| 4096 | * Return the state of the signals. |
| 4097 | */ |
| 4098 | |
| 4099 | static int stl_sc26198getsignals(stlport_t *portp) |
| 4100 | { |
| 4101 | unsigned char ipr; |
| 4102 | int sigs; |
| 4103 | |
| 4104 | #if STLDEBUG |
| 4105 | printf("stl_sc26198getsignals(portp=%x)\n", (int) portp); |
| 4106 | #endif |
| 4107 | |
| 4108 | crit_enter(); |
| 4109 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4110 | ipr = stl_sc26198getreg(portp, IPR); |
| 4111 | BRDDISABLE(portp->brdnr); |
| 4112 | crit_exit(); |
| 4113 | |
| 4114 | sigs = TIOCM_DSR; |
| 4115 | sigs |= (ipr & IPR_DCD) ? 0 : TIOCM_CD; |
| 4116 | sigs |= (ipr & IPR_CTS) ? 0 : TIOCM_CTS; |
| 4117 | sigs |= (ipr & IPR_DTR) ? 0: TIOCM_DTR; |
| 4118 | sigs |= (ipr & IPR_RTS) ? 0: TIOCM_RTS; |
| 4119 | return(sigs); |
| 4120 | } |
| 4121 | |
| 4122 | /*****************************************************************************/ |
| 4123 | |
| 4124 | /* |
| 4125 | * Enable/Disable the Transmitter and/or Receiver. |
| 4126 | */ |
| 4127 | |
| 4128 | static void stl_sc26198enablerxtx(stlport_t *portp, int rx, int tx) |
| 4129 | { |
| 4130 | unsigned char ccr; |
| 4131 | |
| 4132 | #if STLDEBUG |
| 4133 | printf("stl_sc26198enablerxtx(portp=%x,rx=%d,tx=%d)\n", |
| 4134 | (int) portp, rx, tx); |
| 4135 | #endif |
| 4136 | |
| 4137 | ccr = portp->crenable; |
| 4138 | if (tx == 0) |
| 4139 | ccr &= ~CR_TXENABLE; |
| 4140 | else if (tx > 0) |
| 4141 | ccr |= CR_TXENABLE; |
| 4142 | if (rx == 0) |
| 4143 | ccr &= ~CR_RXENABLE; |
| 4144 | else if (rx > 0) |
| 4145 | ccr |= CR_RXENABLE; |
| 4146 | |
| 4147 | crit_enter(); |
| 4148 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4149 | stl_sc26198setreg(portp, SCCR, ccr); |
| 4150 | BRDDISABLE(portp->brdnr); |
| 4151 | portp->crenable = ccr; |
| 4152 | crit_exit(); |
| 4153 | } |
| 4154 | |
| 4155 | /*****************************************************************************/ |
| 4156 | |
| 4157 | /* |
| 4158 | * Start/stop the Transmitter and/or Receiver. |
| 4159 | */ |
| 4160 | |
| 4161 | static void stl_sc26198startrxtx(stlport_t *portp, int rx, int tx) |
| 4162 | { |
| 4163 | unsigned char imr; |
| 4164 | |
| 4165 | #if STLDEBUG |
| 4166 | printf("stl_sc26198startrxtx(portp=%x,rx=%d,tx=%d)\n", |
| 4167 | (int) portp, rx, tx); |
| 4168 | #endif |
| 4169 | |
| 4170 | imr = portp->imr; |
| 4171 | if (tx == 0) |
| 4172 | imr &= ~IR_TXRDY; |
| 4173 | else if (tx == 1) |
| 4174 | imr |= IR_TXRDY; |
| 4175 | if (rx == 0) |
| 4176 | imr &= ~(IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG); |
| 4177 | else if (rx > 0) |
| 4178 | imr |= IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG; |
| 4179 | |
| 4180 | crit_enter(); |
| 4181 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4182 | stl_sc26198setreg(portp, IMR, imr); |
| 4183 | BRDDISABLE(portp->brdnr); |
| 4184 | portp->imr = imr; |
| 4185 | if (tx > 0) { |
| 4186 | portp->state |= ASY_TXBUSY; |
| 4187 | portp->tty.t_state |= TS_BUSY; |
| 4188 | } |
| 4189 | crit_exit(); |
| 4190 | } |
| 4191 | |
| 4192 | /*****************************************************************************/ |
| 4193 | |
| 4194 | /* |
| 4195 | * Disable all interrupts from this port. |
| 4196 | */ |
| 4197 | |
| 4198 | static void stl_sc26198disableintrs(stlport_t *portp) |
| 4199 | { |
| 4200 | |
| 4201 | #if STLDEBUG |
| 4202 | printf("stl_sc26198disableintrs(portp=%x)\n", (int) portp); |
| 4203 | #endif |
| 4204 | |
| 4205 | crit_enter(); |
| 4206 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4207 | portp->imr = 0; |
| 4208 | stl_sc26198setreg(portp, IMR, 0); |
| 4209 | BRDDISABLE(portp->brdnr); |
| 4210 | crit_exit(); |
| 4211 | } |
| 4212 | |
| 4213 | /*****************************************************************************/ |
| 4214 | |
| 4215 | static void stl_sc26198sendbreak(stlport_t *portp, long len) |
| 4216 | { |
| 4217 | |
| 4218 | #if STLDEBUG |
| 4219 | printf("stl_sc26198sendbreak(portp=%x,len=%d)\n", |
| 4220 | (int) portp, (int) len); |
| 4221 | #endif |
| 4222 | |
| 4223 | crit_enter(); |
| 4224 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4225 | if (len == -1) { |
| 4226 | stl_sc26198setreg(portp, SCCR, CR_TXSTARTBREAK); |
| 4227 | portp->stats.txbreaks++; |
| 4228 | } else { |
| 4229 | stl_sc26198setreg(portp, SCCR, CR_TXSTOPBREAK); |
| 4230 | } |
| 4231 | BRDDISABLE(portp->brdnr); |
| 4232 | crit_exit(); |
| 4233 | } |
| 4234 | |
| 4235 | /*****************************************************************************/ |
| 4236 | |
| 4237 | /* |
| 4238 | * Take flow control actions... |
| 4239 | */ |
| 4240 | |
| 4241 | static void stl_sc26198sendflow(stlport_t *portp, int hw, int sw) |
| 4242 | { |
| 4243 | unsigned char mr0; |
| 4244 | |
| 4245 | #if STLDEBUG |
| 4246 | printf("stl_sc26198sendflow(portp=%x,hw=%d,sw=%d)\n", |
| 4247 | (int) portp, hw, sw); |
| 4248 | #endif |
| 4249 | |
| 4250 | if (portp == (stlport_t *) NULL) |
| 4251 | return; |
| 4252 | |
| 4253 | crit_enter(); |
| 4254 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4255 | |
| 4256 | if (sw >= 0) { |
| 4257 | mr0 = stl_sc26198getreg(portp, MR0); |
| 4258 | stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); |
| 4259 | if (sw > 0) { |
| 4260 | stl_sc26198setreg(portp, SCCR, CR_TXSENDXOFF); |
| 4261 | mr0 &= ~MR0_SWFRX; |
| 4262 | portp->stats.rxxoff++; |
| 4263 | } else { |
| 4264 | stl_sc26198setreg(portp, SCCR, CR_TXSENDXON); |
| 4265 | mr0 |= MR0_SWFRX; |
| 4266 | portp->stats.rxxon++; |
| 4267 | } |
| 4268 | stl_sc26198wait(portp); |
| 4269 | stl_sc26198setreg(portp, MR0, mr0); |
| 4270 | } |
| 4271 | |
| 4272 | if (hw == 0) { |
| 4273 | portp->state |= ASY_RTSFLOW; |
| 4274 | stl_sc26198setreg(portp, MR1, |
| 4275 | (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS)); |
| 4276 | stl_sc26198setreg(portp, IOPIOR, |
| 4277 | (stl_sc26198getreg(portp, IOPIOR) & ~IOPR_RTS)); |
| 4278 | portp->stats.rxrtsoff++; |
| 4279 | } else if (hw > 0) { |
| 4280 | portp->state &= ~ASY_RTSFLOW; |
| 4281 | stl_sc26198setreg(portp, MR1, |
| 4282 | (stl_sc26198getreg(portp, MR1) | MR1_AUTORTS)); |
| 4283 | stl_sc26198setreg(portp, IOPIOR, |
| 4284 | (stl_sc26198getreg(portp, IOPIOR) | IOPR_RTS)); |
| 4285 | portp->stats.rxrtson++; |
| 4286 | } |
| 4287 | |
| 4288 | BRDDISABLE(portp->brdnr); |
| 4289 | crit_exit(); |
| 4290 | } |
| 4291 | |
| 4292 | /*****************************************************************************/ |
| 4293 | |
| 4294 | /* |
| 4295 | * Return the current state of data flow on this port. This is only |
| 4296 | * really interresting when determining if data has fully completed |
| 4297 | * transmission or not... The sc26198 interrupt scheme cannot |
| 4298 | * determine when all data has actually drained, so we need to |
| 4299 | * check the port statusy register to be sure. |
| 4300 | */ |
| 4301 | |
| 4302 | static int stl_sc26198datastate(stlport_t *portp) |
| 4303 | { |
| 4304 | unsigned char sr; |
| 4305 | |
| 4306 | #if STLDEBUG |
| 4307 | printf("stl_sc26198datastate(portp=%x)\n", (int) portp); |
| 4308 | #endif |
| 4309 | |
| 4310 | if (portp == (stlport_t *) NULL) |
| 4311 | return(0); |
| 4312 | if (portp->state & ASY_TXBUSY) |
| 4313 | return(1); |
| 4314 | |
| 4315 | crit_enter(); |
| 4316 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4317 | sr = stl_sc26198getreg(portp, SR); |
| 4318 | BRDDISABLE(portp->brdnr); |
| 4319 | crit_exit(); |
| 4320 | |
| 4321 | return((sr & SR_TXEMPTY) ? 0 : 1); |
| 4322 | } |
| 4323 | |
| 4324 | /*****************************************************************************/ |
| 4325 | |
| 4326 | static void stl_sc26198flush(stlport_t *portp, int flag) |
| 4327 | { |
| 4328 | |
| 4329 | #if STLDEBUG |
| 4330 | printf("stl_sc26198flush(portp=%x,flag=%x)\n", (int) portp, flag); |
| 4331 | #endif |
| 4332 | |
| 4333 | if (portp == (stlport_t *) NULL) |
| 4334 | return; |
| 4335 | |
| 4336 | crit_enter(); |
| 4337 | BRDENABLE(portp->brdnr, portp->pagenr); |
| 4338 | if (flag & FWRITE) { |
| 4339 | stl_sc26198setreg(portp, SCCR, CR_TXRESET); |
| 4340 | stl_sc26198setreg(portp, SCCR, portp->crenable); |
| 4341 | } |
| 4342 | if (flag & FREAD) { |
| 4343 | while (stl_sc26198getreg(portp, SR) & SR_RXRDY) |
| 4344 | stl_sc26198getreg(portp, RXFIFO); |
| 4345 | } |
| 4346 | BRDDISABLE(portp->brdnr); |
| 4347 | crit_exit(); |
| 4348 | } |
| 4349 | |
| 4350 | /*****************************************************************************/ |
| 4351 | |
| 4352 | /* |
| 4353 | * If we are TX flow controlled and in IXANY mode then we may |
| 4354 | * need to unflow control here. We gotta do this because of the |
| 4355 | * automatic flow control modes of the sc26198 - which downs't |
| 4356 | * support any concept of an IXANY mode. |
| 4357 | */ |
| 4358 | |
| 4359 | static void stl_sc26198txunflow(stlport_t *portp) |
| 4360 | { |
| 4361 | unsigned char mr0; |
| 4362 | |
| 4363 | mr0 = stl_sc26198getreg(portp, MR0); |
| 4364 | stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); |
| 4365 | stl_sc26198setreg(portp, SCCR, CR_HOSTXON); |
| 4366 | stl_sc26198setreg(portp, MR0, mr0); |
| 4367 | portp->state &= ~ASY_TXFLOWED; |
| 4368 | } |
| 4369 | |
| 4370 | /*****************************************************************************/ |
| 4371 | |
| 4372 | /* |
| 4373 | * Delay for a small amount of time, to give the sc26198 a chance |
| 4374 | * to process a command... |
| 4375 | */ |
| 4376 | |
| 4377 | static void stl_sc26198wait(stlport_t *portp) |
| 4378 | { |
| 4379 | int i; |
| 4380 | |
| 4381 | #if STLDEBUG |
| 4382 | printf("stl_sc26198wait(portp=%x)\n", (int) portp); |
| 4383 | #endif |
| 4384 | |
| 4385 | if (portp == (stlport_t *) NULL) |
| 4386 | return; |
| 4387 | |
| 4388 | for (i = 0; (i < 20); i++) |
| 4389 | stl_sc26198getglobreg(portp, TSTR); |
| 4390 | } |
| 4391 | |
| 4392 | /*****************************************************************************/ |
| 4393 | |
| 4394 | /* |
| 4395 | * Transmit interrupt handler. This has gotta be fast! Handling TX |
| 4396 | * chars is pretty simple, stuff as many as possible from the TX buffer |
| 4397 | * into the sc26198 FIFO. |
| 4398 | */ |
| 4399 | |
| 4400 | static __inline void stl_sc26198txisr(stlport_t *portp) |
| 4401 | { |
| 4402 | unsigned int ioaddr; |
| 4403 | unsigned char mr0; |
| 4404 | char *head, *tail; |
| 4405 | int len, stlen; |
| 4406 | |
| 4407 | #if STLDEBUG |
| 4408 | printf("stl_sc26198txisr(portp=%x)\n", (int) portp); |
| 4409 | #endif |
| 4410 | |
| 4411 | ioaddr = portp->ioaddr; |
| 4412 | |
| 4413 | head = portp->tx.head; |
| 4414 | tail = portp->tx.tail; |
| 4415 | len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head)); |
| 4416 | if ((len == 0) || ((len < STL_TXBUFLOW) && |
| 4417 | ((portp->state & ASY_TXLOW) == 0))) { |
| 4418 | portp->state |= ASY_TXLOW; |
| 4419 | stl_dotimeout(); |
| 4420 | } |
| 4421 | |
| 4422 | if (len == 0) { |
| 4423 | outb((ioaddr + XP_ADDR), (MR0 | portp->uartaddr)); |
| 4424 | mr0 = inb(ioaddr + XP_DATA); |
| 4425 | if ((mr0 & MR0_TXMASK) == MR0_TXEMPTY) { |
| 4426 | portp->imr &= ~IR_TXRDY; |
| 4427 | outb((ioaddr + XP_ADDR), (IMR | portp->uartaddr)); |
| 4428 | outb((ioaddr + XP_DATA), portp->imr); |
| 4429 | portp->state |= ASY_TXEMPTY; |
| 4430 | portp->state &= ~ASY_TXBUSY; |
| 4431 | } else { |
| 4432 | mr0 |= ((mr0 & ~MR0_TXMASK) | MR0_TXEMPTY); |
| 4433 | outb((ioaddr + XP_DATA), mr0); |
| 4434 | } |
| 4435 | } else { |
| 4436 | len = MIN(len, SC26198_TXFIFOSIZE); |
| 4437 | portp->stats.txtotal += len; |
| 4438 | stlen = MIN(len, (portp->tx.endbuf - tail)); |
| 4439 | outb((ioaddr + XP_ADDR), GTXFIFO); |
| 4440 | outsb((ioaddr + XP_DATA), tail, stlen); |
| 4441 | len -= stlen; |
| 4442 | tail += stlen; |
| 4443 | if (tail >= portp->tx.endbuf) |
| 4444 | tail = portp->tx.buf; |
| 4445 | if (len > 0) { |
| 4446 | outsb((ioaddr + XP_DATA), tail, len); |
| 4447 | tail += len; |
| 4448 | } |
| 4449 | portp->tx.tail = tail; |
| 4450 | } |
| 4451 | } |
| 4452 | |
| 4453 | /*****************************************************************************/ |
| 4454 | |
| 4455 | /* |
| 4456 | * Receive character interrupt handler. Determine if we have good chars |
| 4457 | * or bad chars and then process appropriately. Good chars are easy |
| 4458 | * just shove the lot into the RX buffer and set all status byte to 0. |
| 4459 | * If a bad RX char then process as required. This routine needs to be |
| 4460 | * fast! |
| 4461 | */ |
| 4462 | |
| 4463 | static __inline void stl_sc26198rxisr(stlport_t *portp, unsigned int iack) |
| 4464 | { |
| 4465 | #if STLDEBUG |
| 4466 | printf("stl_sc26198rxisr(portp=%x,iack=%x)\n", (int) portp, iack); |
| 4467 | #endif |
| 4468 | |
| 4469 | if ((iack & IVR_TYPEMASK) == IVR_RXDATA) |
| 4470 | stl_sc26198rxgoodchars(portp); |
| 4471 | else |
| 4472 | stl_sc26198rxbadchars(portp); |
| 4473 | |
| 4474 | /* |
| 4475 | * If we are TX flow controlled and in IXANY mode then we may need |
| 4476 | * to unflow control here. We gotta do this because of the automatic |
| 4477 | * flow control modes of the sc26198. |
| 4478 | */ |
| 4479 | if ((portp->state & ASY_TXFLOWED) && (portp->tty.t_iflag & IXANY)) |
| 4480 | stl_sc26198txunflow(portp); |
| 4481 | } |
| 4482 | |
| 4483 | /*****************************************************************************/ |
| 4484 | |
| 4485 | /* |
| 4486 | * Process the good received characters from RX FIFO. |
| 4487 | */ |
| 4488 | |
| 4489 | static void stl_sc26198rxgoodchars(stlport_t *portp) |
| 4490 | { |
| 4491 | unsigned int ioaddr, len, buflen, stlen; |
| 4492 | char *head, *tail; |
| 4493 | |
| 4494 | #if STLDEBUG |
| 4495 | printf("stl_sc26198rxgoodchars(port=%x)\n", (int) portp); |
| 4496 | #endif |
| 4497 | |
| 4498 | ioaddr = portp->ioaddr; |
| 4499 | |
| 4500 | /* |
| 4501 | * First up, calculate how much room there is in the RX ring queue. |
| 4502 | * We also want to keep track of the longest possible copy length, |
| 4503 | * this has to allow for the wrapping of the ring queue. |
| 4504 | */ |
| 4505 | head = portp->rx.head; |
| 4506 | tail = portp->rx.tail; |
| 4507 | if (head >= tail) { |
| 4508 | buflen = STL_RXBUFSIZE - (head - tail) - 1; |
| 4509 | stlen = portp->rx.endbuf - head; |
| 4510 | } else { |
| 4511 | buflen = tail - head - 1; |
| 4512 | stlen = buflen; |
| 4513 | } |
| 4514 | |
| 4515 | /* |
| 4516 | * Check if the input buffer is near full. If so then we should take |
| 4517 | * some flow control action... It is very easy to do hardware and |
| 4518 | * software flow control from here since we have the port selected on |
| 4519 | * the UART. |
| 4520 | */ |
| 4521 | if (buflen <= (STL_RXBUFSIZE - STL_RXBUFHIGH)) { |
| 4522 | if (((portp->state & ASY_RTSFLOW) == 0) && |
| 4523 | (portp->state & ASY_RTSFLOWMODE)) { |
| 4524 | portp->state |= ASY_RTSFLOW; |
| 4525 | stl_sc26198setreg(portp, MR1, |
| 4526 | (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS)); |
| 4527 | stl_sc26198setreg(portp, IOPIOR, |
| 4528 | (stl_sc26198getreg(portp, IOPIOR) & ~IOPR_RTS)); |
| 4529 | portp->stats.rxrtsoff++; |
| 4530 | } |
| 4531 | } |
| 4532 | |
| 4533 | /* |
| 4534 | * OK we are set, process good data... If the RX ring queue is full |
| 4535 | * just chuck the chars - don't leave them in the UART. |
| 4536 | */ |
| 4537 | outb((ioaddr + XP_ADDR), GIBCR); |
| 4538 | len = inb(ioaddr + XP_DATA) + 1; |
| 4539 | if (buflen == 0) { |
| 4540 | outb((ioaddr + XP_ADDR), GRXFIFO); |
| 4541 | insb((ioaddr + XP_DATA), &stl_unwanted[0], len); |
| 4542 | portp->stats.rxlost += len; |
| 4543 | portp->stats.rxtotal += len; |
| 4544 | } else { |
| 4545 | len = MIN(len, buflen); |
| 4546 | portp->stats.rxtotal += len; |
| 4547 | stlen = MIN(len, stlen); |
| 4548 | if (len > 0) { |
| 4549 | outb((ioaddr + XP_ADDR), GRXFIFO); |
| 4550 | insb((ioaddr + XP_DATA), head, stlen); |
| 4551 | head += stlen; |
| 4552 | if (head >= portp->rx.endbuf) { |
| 4553 | head = portp->rx.buf; |
| 4554 | len -= stlen; |
| 4555 | insb((ioaddr + XP_DATA), head, len); |
| 4556 | head += len; |
| 4557 | } |
| 4558 | } |
| 4559 | } |
| 4560 | |
| 4561 | portp->rx.head = head; |
| 4562 | portp->state |= ASY_RXDATA; |
| 4563 | stl_dotimeout(); |
| 4564 | } |
| 4565 | |
| 4566 | /*****************************************************************************/ |
| 4567 | |
| 4568 | /* |
| 4569 | * Process all characters in the RX FIFO of the UART. Check all char |
| 4570 | * status bytes as well, and process as required. We need to check |
| 4571 | * all bytes in the FIFO, in case some more enter the FIFO while we |
| 4572 | * are here. To get the exact character error type we need to switch |
| 4573 | * into CHAR error mode (that is why we need to make sure we empty |
| 4574 | * the FIFO). |
| 4575 | */ |
| 4576 | |
| 4577 | static void stl_sc26198rxbadchars(stlport_t *portp) |
| 4578 | { |
| 4579 | unsigned char mr1; |
| 4580 | unsigned int status; |
| 4581 | char *head, *tail; |
| 4582 | char ch; |
| 4583 | int len; |
| 4584 | |
| 4585 | /* |
| 4586 | * First up, calculate how much room there is in the RX ring queue. |
| 4587 | * We also want to keep track of the longest possible copy length, |
| 4588 | * this has to allow for the wrapping of the ring queue. |
| 4589 | */ |
| 4590 | head = portp->rx.head; |
| 4591 | tail = portp->rx.tail; |
| 4592 | len = (head >= tail) ? (STL_RXBUFSIZE - (head - tail) - 1) : |
| 4593 | (tail - head - 1); |
| 4594 | |
| 4595 | /* |
| 4596 | * To get the precise error type for each character we must switch |
| 4597 | * back into CHAR error mode. |
| 4598 | */ |
| 4599 | mr1 = stl_sc26198getreg(portp, MR1); |
| 4600 | stl_sc26198setreg(portp, MR1, (mr1 & ~MR1_ERRBLOCK)); |
| 4601 | |
| 4602 | while ((status = stl_sc26198getreg(portp, SR)) & SR_RXRDY) { |
| 4603 | stl_sc26198setreg(portp, SCCR, CR_CLEARRXERR); |
| 4604 | ch = stl_sc26198getreg(portp, RXFIFO); |
| 4605 | |
| 4606 | if (status & SR_RXBREAK) |
| 4607 | portp->stats.rxbreaks++; |
| 4608 | if (status & SR_RXFRAMING) |
| 4609 | portp->stats.rxframing++; |
| 4610 | if (status & SR_RXPARITY) |
| 4611 | portp->stats.rxparity++; |
| 4612 | if (status & SR_RXOVERRUN) |
| 4613 | portp->stats.rxoverrun++; |
| 4614 | if ((portp->rxignoremsk & status) == 0) { |
| 4615 | if ((portp->tty.t_state & TS_CAN_BYPASS_L_RINT) && |
| 4616 | ((status & SR_RXFRAMING) || |
| 4617 | ((status & SR_RXPARITY) && |
| 4618 | (portp->tty.t_iflag & INPCK)))) |
| 4619 | ch = 0; |
| 4620 | if ((portp->rxmarkmsk & status) == 0) |
| 4621 | status = 0; |
| 4622 | if (len > 0) { |
| 4623 | *(head + STL_RXBUFSIZE) = status; |
| 4624 | *head++ = ch; |
| 4625 | if (head >= portp->rx.endbuf) |
| 4626 | head = portp->rx.buf; |
| 4627 | len--; |
| 4628 | } |
| 4629 | } |
| 4630 | } |
| 4631 | |
| 4632 | /* |
| 4633 | * To get correct interrupt class we must switch back into BLOCK |
| 4634 | * error mode. |
| 4635 | */ |
| 4636 | stl_sc26198setreg(portp, MR1, mr1); |
| 4637 | |
| 4638 | portp->rx.head = head; |
| 4639 | portp->state |= ASY_RXDATA; |
| 4640 | stl_dotimeout(); |
| 4641 | } |
| 4642 | |
| 4643 | /*****************************************************************************/ |
| 4644 | |
| 4645 | /* |
| 4646 | * Other interrupt handler. This includes modem signals, flow |
| 4647 | * control actions, etc. |
| 4648 | */ |
| 4649 | |
| 4650 | static void stl_sc26198otherisr(stlport_t *portp, unsigned int iack) |
| 4651 | { |
| 4652 | unsigned char cir, ipr, xisr; |
| 4653 | |
| 4654 | #if STLDEBUG |
| 4655 | printf("stl_sc26198otherisr(portp=%x,iack=%x)\n", (int) portp, iack); |
| 4656 | #endif |
| 4657 | |
| 4658 | cir = stl_sc26198getglobreg(portp, CIR); |
| 4659 | |
| 4660 | switch (cir & CIR_SUBTYPEMASK) { |
| 4661 | case CIR_SUBCOS: |
| 4662 | ipr = stl_sc26198getreg(portp, IPR); |
| 4663 | if (ipr & IPR_DCDCHANGE) { |
| 4664 | portp->state |= ASY_DCDCHANGE; |
| 4665 | portp->stats.modem++; |
| 4666 | stl_dotimeout(); |
| 4667 | } |
| 4668 | break; |
| 4669 | case CIR_SUBXONXOFF: |
| 4670 | xisr = stl_sc26198getreg(portp, XISR); |
| 4671 | if (xisr & XISR_RXXONGOT) { |
| 4672 | portp->state |= ASY_TXFLOWED; |
| 4673 | portp->stats.txxoff++; |
| 4674 | } |
| 4675 | if (xisr & XISR_RXXOFFGOT) { |
| 4676 | portp->state &= ~ASY_TXFLOWED; |
| 4677 | portp->stats.txxon++; |
| 4678 | } |
| 4679 | break; |
| 4680 | case CIR_SUBBREAK: |
| 4681 | stl_sc26198setreg(portp, SCCR, CR_BREAKRESET); |
| 4682 | stl_sc26198rxbadchars(portp); |
| 4683 | break; |
| 4684 | default: |
| 4685 | break; |
| 4686 | } |
| 4687 | } |
| 4688 | |
| 4689 | /*****************************************************************************/ |
| 4690 | |
| 4691 | /* |
| 4692 | * Interrupt service routine for sc26198 panels. |
| 4693 | */ |
| 4694 | |
| 4695 | static void stl_sc26198intr(stlpanel_t *panelp, unsigned int iobase) |
| 4696 | { |
| 4697 | stlport_t *portp; |
| 4698 | unsigned int iack; |
| 4699 | |
| 4700 | /* |
| 4701 | * Work around bug in sc26198 chip... Cannot have A6 address |
| 4702 | * line of UART high, else iack will be returned as 0. |
| 4703 | */ |
| 4704 | outb((iobase + 1), 0); |
| 4705 | |
| 4706 | iack = inb(iobase + XP_IACK); |
| 4707 | #if STLDEBUG |
| 4708 | printf("stl_sc26198intr(panelp=%p,iobase=%x): iack=%x\n", panelp, iobase, iack); |
| 4709 | #endif |
| 4710 | portp = panelp->ports[(iack & IVR_CHANMASK) + ((iobase & 0x4) << 1)]; |
| 4711 | |
| 4712 | if (iack & IVR_RXDATA) |
| 4713 | stl_sc26198rxisr(portp, iack); |
| 4714 | else if (iack & IVR_TXDATA) |
| 4715 | stl_sc26198txisr(portp); |
| 4716 | else |
| 4717 | stl_sc26198otherisr(portp, iack); |
| 4718 | } |
| 4719 | |
| 4720 | /*****************************************************************************/ |