1 /* -*- linux-c -*- */
2 /* $Id: 8253x.h,v 1.14 2002/02/10 22:17:25 martillo Exp $
3 * sab82532.h: Register Definitions for the Siemens SAB82532 DUSCC
4 *
5 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
6 *
7 * Modified Aug 1, 2000 Francois Wautier
8 * Modified for complete driver Joachim Martillo
9 */
10
11 /* Modifications:
12 * Copyright (C) 2001 By Joachim Martillo, Telford Tools, Inc.
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version
17 * 2 of the License, or (at your option) any later version.
18 *
19 **/
20
21 #ifndef _SAB82532_H
22 #define _SAB82532_H
23
24 #include <linux/types.h>
25 #include <linux/delay.h>
26 #include <linux/serial.h> /* need struct async_icount for ioctl */
27 #include <linux/netdevice.h>
28
29 #include "8253xioc.h"
30 #include "ring.h"
31
32 #define SAB8253X_MAX_TEC_DELAY 200000 /* 1 character time (at 50 baud) */
33 #define SAB8253X_MAX_CEC_DELAY 50000 /* 2.5 TX CLKs (at 50 baud) */
34
35 #define SERIAL_TYPE_SYNCTTY 3 /* check tty driver to make sure okay */
36 /* SERIAL_TYPE_NORMAL and SERIAL_TYPE_CALLOUT */
37 /* seem to be used by the tty driver */
38 /* only to print out a warning not to */
39 /* use callout devices - next version of */
40 /* the code, for now want to be able to */
41 /* maintain some of the structure of */
42 /* a 2.2.* driver for those that are */
43 /* running old kernels. */
44
45 #define READB(port, rreg) (*port->readbyte)(port,\
46 (unsigned char *)&(port->regs->async_read.rreg))
47 #define WRITEB(port, rreg, val) (*port->writebyte)(port,\
48 (unsigned char *)&(port->regs->async_write.rreg), val)
49 #ifdef DEFINE_VARIABLE
50 static unsigned char tmpval;
51 #endif
52 /* Used in the macro below -- don't create a variable called tmpval*/
53 #define SET_REG_BIT(port,rreg,bit)\
54 tmpval=(*port->readbyte)(port,\
55 (unsigned char *)&(port->regs->async_read.rreg));\
56 tmpval |= bit;\
57 (*port->writebyte)(port,\
58 (unsigned char *)&(port->regs->async_write.rreg), tmpval);
59 #define CLEAR_REG_BIT(port,rreg,bit)\
60 tmpval=(*port->readbyte)(port,\
61 (unsigned char *)&(port->regs->async_read.rreg));\
62 tmpval &= ~(bit);\
63 (*port->writebyte)(port,\
64 (unsigned char *)&(port->regs->async_write.rreg), tmpval);
65 #define MASK_REG_BIT(port,rreg,bit)\
66 tmpval=(*port->readbyte)(port,\
67 (unsigned char *)&(port->regs->async_read.rreg));\
68 tmpval &= bit;\
69 (*port->writebyte)(port,\
70 (unsigned char *)&(port->regs->async_write.rreg), tmpval);
71 #define READ_X_WRITEB(port,rreg,op,val)\
72 tmpval=(*port->readbyte)(port,\
73 (unsigned char *)&(port->regs->async_read.rreg));\
74 tmpval op= val;\
75 (*port->writebyte)(port,\
76 (unsigned char *)&(port->regs->async_write.rreg), tmpval);
77
78
79 struct sab82532_async_rd_regs
80 {
81 volatile unsigned char rfifo[0x20]; /* Receive FIFO */
82 volatile unsigned char star; /* Status Register */
83 volatile unsigned char rsta; /* actually an HDLC register */
84 volatile unsigned char mode; /* Mode Register */
85 volatile unsigned char timr; /* Timer Register */
86 volatile unsigned char xon; /* XON Character */
87 volatile unsigned char xoff; /* XOFF Character */
88 volatile unsigned char tcr; /* Termination Character Register */
89 volatile unsigned char dafo; /* Data Format */
90 volatile unsigned char rfc; /* RFIFO Control Register */
91 volatile unsigned char __pad2;
92 volatile unsigned char rbcl; /* Receive Byte Count Low */
93 volatile unsigned char rbch; /* Receive Byte Count High */
94 volatile unsigned char ccr0; /* Channel Configuration Register 0 */
95 volatile unsigned char ccr1; /* Channel Configuration Register 1 */
96 volatile unsigned char ccr2; /* Channel Configuration Register 2 */
97 volatile unsigned char ccr3; /* Channel Configuration Register 3 */
98 volatile unsigned char __pad3[4];
99 volatile unsigned char vstr; /* Version Status Register */
100 volatile unsigned char __pad4[3];
101 volatile unsigned char gis; /* Global Interrupt Status */
102 volatile unsigned char ipc; /* Interrupt Port Configuration */
103 volatile unsigned char isr0; /* Interrupt Status 0 */
104 volatile unsigned char isr1; /* Interrupt Status 1 */
105 volatile unsigned char pvr; /* Port Value Register */
106 volatile unsigned char pis; /* Port Interrupt Status */
107 volatile unsigned char pcr; /* Port Configuration Register */
108 volatile unsigned char ccr4; /* Channel Configuration Register 4 */
109 };
110
111 struct sab82532_async_wr_regs
112 {
113 unsigned char xfifo[0x20]; /* Transmit FIFO */
114 unsigned char cmdr; /* Command Register */
115 unsigned char __pad1;
116 unsigned char mode;
117 unsigned char timr;
118 unsigned char xon;
119 unsigned char xoff;
120 unsigned char tcr;
121 unsigned char dafo;
122 unsigned char rfc;
123 unsigned char __pad2;
124 unsigned char xbcl; /* Transmit Byte Count Low */
125 unsigned char xbch; /* Transmit Byte Count High */
126 unsigned char ccr0;
127 unsigned char ccr1;
128 unsigned char ccr2;
129 unsigned char ccr3;
130 unsigned char tsax; /* Time-Slot Assignment Reg. Transmit */
131 unsigned char tsar; /* Time-Slot Assignment Reg. Receive */
132 unsigned char xccr; /* Transmit Channel Capacity Register */
133 unsigned char rccr; /* Receive Channel Capacity Register */
134 unsigned char bgr; /* Baud Rate Generator Register */
135 unsigned char tic; /* Transmit Immediate Character */
136 unsigned char mxn; /* Mask XON Character */
137 unsigned char mxf; /* Mask XOFF Character */
138 unsigned char iva; /* Interrupt Vector Address */
139 unsigned char ipc;
140 unsigned char imr0; /* Interrupt Mask Register 0 */
141 unsigned char imr1; /* Interrupt Mask Register 1 */
142 unsigned char pvr;
143 unsigned char pim; /* Port Interrupt Mask */
144 unsigned char pcr;
145 unsigned char ccr4;
146 };
147
148 struct sab82532_async_rw_regs
149 { /* Read/Write registers */
150 volatile unsigned char __pad1[0x20];
151 volatile unsigned char __pad2;
152 volatile unsigned char __pad3;
153 volatile unsigned char mode;
154 volatile unsigned char timr;
155 volatile unsigned char xon;
156 volatile unsigned char xoff;
157 volatile unsigned char tcr;
158 volatile unsigned char dafo;
159 volatile unsigned char rfc;
160 volatile unsigned char __pad4;
161 volatile unsigned char __pad5;
162 volatile unsigned char __pad6;
163 volatile unsigned char ccr0;
164 volatile unsigned char ccr1;
165 volatile unsigned char ccr2;
166 volatile unsigned char ccr3;
167 volatile unsigned char __pad7;
168 volatile unsigned char __pad8;
169 volatile unsigned char __pad9;
170 volatile unsigned char __pad10;
171 volatile unsigned char __pad11;
172 volatile unsigned char __pad12;
173 volatile unsigned char __pad13;
174 volatile unsigned char __pad14;
175 volatile unsigned char __pad15;
176 volatile unsigned char ipc;
177 volatile unsigned char __pad16;
178 volatile unsigned char __pad17;
179 volatile unsigned char pvr;
180 volatile unsigned char __pad18;
181 volatile unsigned char pcr;
182 volatile unsigned char ccr4;
183 };
184
185 union sab82532_async_regs
186 {
187 __volatile__ struct sab82532_async_rd_regs r;
188 __volatile__ struct sab82532_async_wr_regs w;
189 __volatile__ struct sab82532_async_rw_regs rw;
190 };
191
192 /* not really used yet */
193 struct sab82532_hdlc_rd_regs
194 {
195 volatile unsigned char rfifo[0x20]; /* Receive FIFO */
196 volatile unsigned char star; /* Status Register */
197 volatile unsigned char rsta;
198 volatile unsigned char mode; /* Mode Register */
199 volatile unsigned char timr; /* Timer Register */
200 volatile unsigned char xad1; /* Tx Address High 1 */
201 volatile unsigned char xad2; /* Tx Address High 2 */
202 volatile unsigned char __pad1[2];
203 volatile unsigned char ral1; /* Rx Address Low 1 */
204 volatile unsigned char rhcr; /* Received HDLC Control */
205 volatile unsigned char rbcl; /* Receive Byte Count Low */
206 volatile unsigned char rbch; /* Receive Byte Count High */
207 volatile unsigned char ccr0; /* Channel Configuration Register 0 */
208 volatile unsigned char ccr1; /* Channel Configuration Register 1 */
209 volatile unsigned char ccr2; /* Channel Configuration Register 2 */
210 volatile unsigned char ccr3; /* Channel Configuration Register 3 */
211 volatile unsigned char __pad2[4];
212 volatile unsigned char vstr; /* Version Status Register */
213 volatile unsigned char __pad3[3];
214 volatile unsigned char gis; /* Global Interrupt Status */
215 volatile unsigned char ipc; /* Interrupt Port Configuration */
216 volatile unsigned char isr0; /* Interrupt Status 0 */
217 volatile unsigned char isr1; /* Interrupt Status 1 */
218 volatile unsigned char pvr; /* Port Value Register */
219 volatile unsigned char pis; /* Port Interrupt Status */
220 volatile unsigned char pcr; /* Port Configuration Register */
221 volatile unsigned char ccr4; /* Channel Configuration Register 4 */
222 };
223
224 struct sab82532_hdlc_wr_regs
225 {
226 unsigned char xfifo[0x20]; /* Transmit FIFO */
227 unsigned char cmdr; /* Command Register */
228 unsigned char pre; /* Preamble */
229 unsigned char mode;
230 unsigned char timr;
231 unsigned char xad1; /* Tx Address High 1 */
232 unsigned char xad2; /* Tx Address High 2 */
233 unsigned char rah1; /* Rx Address High 1 */
234 unsigned char rah2; /* Rx Address High 2 */
235 unsigned char ral1; /* Rx Address Low 1 */
236 unsigned char ral2; /* Rx Address Low 2 */
237 unsigned char xbcl; /* Transmit Byte Count Low */
238 unsigned char xbch; /* Transmit Byte Count High */
239 unsigned char ccr0;
240 unsigned char ccr1;
241 unsigned char ccr2;
242 unsigned char ccr3;
243 unsigned char tsax; /* Time-Slot Assignment Reg. Transmit */
244 unsigned char tsar; /* Time-Slot Assignment Reg. Receive */
245 unsigned char xccr; /* Transmit Channel Capacity Register */
246 unsigned char rccr; /* Receive Channel Capacity Register */
247 unsigned char bgr; /* Baud Rate Generator Register */
248 unsigned char rlcr; /* Rx Frame Length Check */
249 unsigned char aml; /* Address Mask Low */
250 unsigned char amh; /* Address Mask High */
251 unsigned char iva; /* Interrupt Vector Address */
252 unsigned char ipc;
253 unsigned char imr0; /* Interrupt Mask Register 0 */
254 unsigned char imr1; /* Interrupt Mask Register 1 */
255 unsigned char pvr;
256 unsigned char pim; /* Port Interrupt Mask */
257 unsigned char pcr;
258 unsigned char ccr4;
259 };
260
261 union sab82532_regs
262 {
263 __volatile__ struct sab82532_async_rd_regs async_read;
264 __volatile__ struct sab82532_async_wr_regs async_write;
265 __volatile__ struct sab82532_hdlc_rd_regs hdlc_read;
266 __volatile__ struct sab82532_hdlc_wr_regs hdlc_write;
267 };
268
269 /*
270 * Modem signal definition
271 */
272
273 typedef struct mctlsig
274 {
275 unsigned char *reg; /* chip register offset */
276 unsigned char inverted; /* interpret the results as inverted */
277 unsigned char mask; /* bit within that register */
278 unsigned char val; /* cached value */
279 unsigned int irq; /* address of correct isr register */
280 unsigned char irqmask; /* */
281 unsigned char cnst; /* A value that should always be set for
282 * this signal register */
283 } mctlsig_t, MCTLSIG;
284
285 union sab8253x_irq_status
286 {
287 unsigned int stat;
288 unsigned char images[4];
289 struct
290 {
291 unsigned char isr0;
292 unsigned char isr1;
293 unsigned char pis;
294 } sreg;
295 };
296 /* the following are deprecated */
297 /* older version of structure above */
298 /* used array*/
299 #define ISR0_IDX 0
300 #define ISR1_IDX 1
301 #define PIS_IDX 2
302
303 /*
304 * Each port has a structure like this associated to it.
305 * All the port are linked with the next fields
306 * All the port of one chip are linked with the next_by_chip
307 */
308
309 #define FUNCTION_NR 0
310 #define FUNCTION_AO 1
311 #define FUNCTION_NA 2
312 #define FUNCTION_UN 3
313
314 typedef struct sab_port
315 {
316 int magic;
317 union sab82532_regs *regs;
318 struct sab_chip *chip;
319 struct sab_board *board;
320 struct tty_struct *tty;
321 unsigned char *xmit_buf;
322 int xmit_head; /* put characters on write */
323 int xmit_tail; /* read from here -- in writeb or writefifo */
324 int xmit_cnt;
325
326 /*
327 * Various linked list pertinent to this link
328 */
329 struct sab_port * next;
330 struct sab_port * next_by_chip;
331 struct sab_port * next_by_board;
332 struct sab_port * next_by_cim;
333
334 struct net_device *dev;
335 struct net_device *next_dev;
336
337 struct fasync_struct * async_queue;
338 struct sk_buff_head *sab8253xbuflist; /* need to keep */
339 /* a list of all */
340 /* skbuffs so that */
341 /* we can guarantee */
342 /* freeing all when */
343 /* the PPC is stopped */
344 /* on close*/
345 struct sk_buff_head *sab8253xc_rcvbuflist; /* used for passing */
346 /* buffers from interrupt */
347 /* receive process*/
348
349
350 DCONTROL2 dcontrol2;
351 DCONTROL2 active2;
352 DCONTROL2 sabnext2;
353
354 int DoingInterrupt;
355 int irq;
356 int flags; /* suggested by serial.h
357 * but this driver is
358 * more general */
359 int syncflags;
360 int type; /* SAB82532/8 version */
361 unsigned int function;
362 int read_status_mask;
363 int ignore_status_mask;
364 int timeout;
365 int xmit_fifo_size;
366 int recv_fifo_size;
367 int custom_divisor;
368 unsigned long baud;
369 unsigned int ebrg;
370 unsigned int cec_timeout;
371 unsigned int tec_timeout;
372
373 int x_char;
374 int close_delay;
375 unsigned short closing_wait;
376 unsigned short closing_wait2;
377 int all_sent;
378 int is_console;
379 #define OPEN_NOT 0
380 #define OPEN_ASYNC 1
381 #define OPEN_SYNC 2
382 #define OPEN_BSC 3
383 #define OPEN_RAW 4
384 #define OPEN_SYNC_NET 5
385 #define OPEN_SYNC_CHAR 6
386 unsigned int open_type; /* Sync? Async?, int better for hw bps */
387 unsigned char interrupt_mask0;
388 unsigned char interrupt_mask1;
389 /* Modem signals */
390 mctlsig_t dtr;
391 mctlsig_t dsr;
392 mctlsig_t dcd;
393 mctlsig_t cts;
394 mctlsig_t rts;
395 mctlsig_t txclkdir; /* Direction of TxClk */
396 unsigned long custspeed; /* Custom speed */
397 unsigned long event;
398 unsigned long last_active;
399 int line;
400 int count;
401 int blocked_open;
402 long session;
403 long pgrp;
404 struct tq_struct tqueue;
405 struct tq_struct tqueue_hangup;
406 struct async_icount icount;
407 struct termios normal_termios;
408 struct termios callout_termios;
409 wait_queue_head_t open_wait;
410 wait_queue_head_t close_wait;
411 wait_queue_head_t delta_msr_wait;
412 wait_queue_head_t read_wait;
413 wait_queue_head_t write_wait;
414
415 /*
416 * Pointer to FIFO access routines. These are individualized
417 * by hardware because different hardware may have different
418 * ways to get to the FIFOs.
419 */
420
421 void (*readfifo)(struct sab_port *port,
422 unsigned char *buf,
423 u32 nbytes);
424 void (*writefifo)(struct sab_port *port);
425
426 /*
427 * Pointer to register access routines. These are individualized
428 * by hardware because different hardware may have different
429 * ways to get to the register.
430 */
431 unsigned char (*readbyte)(struct sab_port *port,
432 unsigned char *reg);
433 void (*writebyte)(struct sab_port *port,
434 unsigned char *reg,
435 unsigned char val);
436 u16 (*readword)(struct sab_port *port,
437 u16 *reg);
438 void (*writeword)(struct sab_port *port,
439 u16 *reg,
440 u16 val);
441
442 /*
443 * Pointer to protocol functions
444 *
445 */
446
447 unsigned int portno;
448 void (*receive_chars)(struct sab_port *port,
449 union sab8253x_irq_status *stat);
450 void (*transmit_chars)(struct sab_port *port,
451 union sab8253x_irq_status *stat);
452 void (*check_status)(struct sab_port *port,
453 union sab8253x_irq_status *stat);
454 unsigned int receive_test;
455 unsigned int transmit_test;
456 unsigned int check_status_test;
457 struct channelcontrol ccontrol;
458
459 unsigned int tx_full;
460 unsigned int rx_empty;
461 struct counters Counters;
462 struct net_device_stats stats;
463
464 /* collect statistics for netstat */
465 /* etc. those programs don't know */
466 /* about priorities*/
467
468 int msgbufindex;
469 char msgbuf[RXSIZE];
470 unsigned int buffergreedy;
471 unsigned int sigmode;
472 } sab_port_t, SAB_PORT;
473
474 /*
475 * per-parallel port structure
476 */
477
478 /* SAB82538 4 8-bits parallel ports
479 * To summarize the use of the parallel port:
480 * RS-232
481 * Parallel port A -- TxClkdir control (output) ports 0 - 7
482 * Parallel port B -- DTR (output) ports 0 - 7
483 * Parallel port C -- DSR (input) ports 0 - 7
484 * Parallel port D -- driver power down (output) drivers 0 - 3
485 *
486 * SAB82532 (Aurora) 1 8-bit parallel port
487 * To summarize the use of the parallel port:
488 * RS-232
489 * A B I/O descr
490 * P0 P4 output TxClk ctrl
491 * P1 P5 output DTR
492 * P2 P6 input DSR
493 * P3 P7 output 485 control
494 *
495 * Note that this new version of the driver
496 * does not support the SPARC motherboard ESCC2
497 *
498 * SAB82532 (Sun) 1 8-bit parallel port
499 * To summarize the use of the parallel port:
500 * RS-232
501 * A B I/O descr
502 * P0 P3 input DSR
503 * P1 P2 output DTR
504 * P5 P6 input ?
505 * P4 P7 output ?
506 *
507 */
508 /* not sure how usefule */
509 typedef struct sabparport
510 {
511 /* cached values: */
512 unsigned char pp_pcr;
513 unsigned char pp_pim;
514 unsigned char pp_pvr;
515
516 /* register offsets: */
517 unsigned int pp_pcrreg;
518 unsigned int pp_pimreg;
519 unsigned int pp_pisreg;
520 unsigned int pp_pvrreg;
521 } sabparport_t, SABPARPORT;
522
523 #define ESCC2 2
524 #define ESCC8 8
525
526 /*
527 * Per-chip structure
528 */
529
530
531 typedef struct sab_chip
532 {
533 unsigned int chip_type;
534 struct sab_board *c_board; /* Parent board */
535 struct aura_cim *c_cim; /* if present */
536 unsigned char c_chipno; /* chip number */
537 unsigned char c_revision; /* the revision code from the VSTR */
538 unsigned char c_nports; /* number of ports per chip */
539 void *c_regs; /* base address for chip registers */
540 struct sab_port *c_portbase;
541 struct sab_chip *next; /* the next chip in the chip chain */
542 struct sab_chip *next_by_board; /* the next chip on the board */
543 struct sab_chip *next_by_cim;
544 void (*int_disable)(struct sab_chip* chip);
545 } sab_chip_t, SAB_CHIP;
546
547
548 /* Some useful facts */
549 #define SAB82532_REG_SIZE 0x40
550 #define SAB82538_REG_SIZE 0x40
551
552 /* RFIFO Status Byte */
553 #define SAB82532_RSTAT_PE 0x80
554 #define SAB82532_RSTAT_FE 0x40
555 #define SAB82532_RSTAT_PARITY 0x01
556
557 /* Status Register (STAR) */
558 #define SAB82532_STAR_XDOV 0x80
559 #define SAB82532_STAR_XFW 0x40
560 #define SAB82532_STAR_RFNE 0x20
561 #define SAB82532_STAR_FCS 0x10
562 #define SAB82532_STAR_TEC 0x08
563 #define SAB82532_STAR_RLI 0x08
564 #define SAB82532_STAR_CEC 0x04
565 #define SAB82532_STAR_CTS 0x02
566
567 /* Command Register (CMDR) */
568 #define SAB82532_CMDR_RMC 0x80
569 #define SAB82532_CMDR_RRES 0x40
570 #define SAB82532_CMDR_RHR 0x40
571 #define SAB82532_CMDR_RFRD 0x20
572 #define SAB82532_CMDR_STI 0x10
573 #define SAB82532_CMDR_XF 0x08
574 #define SAB82532_CMDR_XTF 0x08
575 #define SAB82532_CMDR_XME 0x02
576 #define SAB82532_CMDR_XRES 0x01
577
578 /* leaving them for reference */
579 /* they are now defined in 8253xioc.h*/
580 #if 0
581 /* Mode Register (MODE) */
582 #define SAB82532_MODE_TM0 0x80
583 #define SAB82532_MODE_FRTS 0x40
584 #define SAB82532_MODE_FCTS 0x20
585 #define SAB82532_MODE_FLON 0x10
586 #define SAB82532_MODE_TCPU 0x10
587 #define SAB82532_MODE_RAC 0x08
588 #define SAB82532_MODE_RTS 0x04
589 #define SAB82532_MODE_TRS 0x02
590 #define SAB82532_MODE_TLP 0x01
591 #endif
592
593 /* Receive Status Register (READ) */
594 #define SAB82532_RSTA_VFR 0x80
595 #define SAB82532_RSTA_RDO 0x40
596 #define SAB82532_RSTA_CRC 0x20
597 #define SAB82532_RSTA_RAB 0x10
598
599 /* Timer Register (TIMR) */
600 #define SAB82532_TIMR_CNT_MASK 0xe0
601 #define SAB82532_TIMR_VALUE_MASK 0x1f
602
603 /* Data Format (DAFO) */
604 #define SAB82532_DAFO_XBRK 0x40
605 #define SAB82532_DAFO_STOP 0x20
606 #define SAB82532_DAFO_PAR_SPACE 0x00
607 #define SAB82532_DAFO_PAR_ODD 0x08
608 #define SAB82532_DAFO_PAR_EVEN 0x10
609 #define SAB82532_DAFO_PAR_MARK 0x18
610 #define SAB82532_DAFO_PARE 0x04
611 #define SAB82532_DAFO_CHL8 0x00
612 #define SAB82532_DAFO_CHL7 0x01
613 #define SAB82532_DAFO_CHL6 0x02
614 #define SAB82532_DAFO_CHL5 0x03
615
616 /* RFIFO Control Register (RFC) */
617 #define SAB82532_RFC_DPS 0x40
618 #define SAB82532_RFC_DXS 0x20
619 #define SAB82532_RFC_RFDF 0x10
620 #define SAB82532_RFC_RFTH_1 0x00
621 #define SAB82532_RFC_RFTH_4 0x04
622 #define SAB82532_RFC_RFTH_16 0x08
623 #define SAB82532_RFC_RFTH_32 0x0c
624 #define SAB82532_RFC_TCDE 0x01
625
626 /* Received Byte Count High (RBCH) */
627 #define SAB82532_RBCH_DMA 0x80
628 #define SAB82532_RBCH_CAS 0x20
629 #define SAB82532_RBCH_OV 0x10
630 #define SAB82532_RBCH_HMSK 0x0F
631
632 /* Transmit Byte Count High (XBCH) */
633 #define SAB82532_XBCH_DMA 0x80
634 #define SAB82532_XBCH_CAS 0x20
635 #define SAB82532_XBCH_XC 0x10
636
637 /* leaving them for reference */
638 /* they are now defined in 8253xioc.h*/
639 #if 0
640 /* Channel Configuration Register 0 (CCR0) */
641 #define SAB82532_CCR0_PU 0x80
642 #define SAB82532_CCR0_MCE 0x40
643 #define SAB82532_CCR0_SC_NRZ 0x00
644 #define SAB82532_CCR0_SC_NRZI 0x08
645 #define SAB82532_CCR0_SC_FM0 0x10
646 #define SAB82532_CCR0_SC_FM1 0x14
647 #define SAB82532_CCR0_SC_MANCH 0x18
648 #define SAB82532_CCR0_SM_HDLC 0x00
649 #define SAB82532_CCR0_SM_SDLC_LOOP 0x01
650 #define SAB82532_CCR0_SM_BISYNC 0x02
651 #define SAB82532_CCR0_SM_ASYNC 0x03
652
653 /* Channel Configuration Register 1 (CCR1) */
654 #define SAB82532_CCR1_SFLG 0x80
655 #define SAB82532_CCR1_ODS 0x10
656 #define SAB82532_CCR1_BCR 0x08
657 #define SAB82532_CCR1_IFF 0x08
658 #define SAB82532_CCR1_ITF 0x00
659 #define SAB82532_CCR1_CM_MASK 0x07
660
661 /* Channel Configuration Register 2 (CCR2) */
662 #define SAB82532_CCR2_SOC1 0x80
663 #define SAB82532_CCR2_SOC0 0x40
664 #define SAB82532_CCR2_BR9 0x80
665 #define SAB82532_CCR2_BR8 0x40
666 #define SAB82532_CCR2_BDF 0x20
667 #define SAB82532_CCR2_SSEL 0x10
668 #define SAB82532_CCR2_XCS0 0x20
669 #define SAB82532_CCR2_RCS0 0x10
670 #define SAB82532_CCR2_TOE 0x08
671 #define SAB82532_CCR2_RWX 0x04
672 #define SAB82532_CCR2_C32 0x02
673 #define SAB82532_CCR2_DIV 0x01
674
675 /* Channel Configuration Register 3 (CCR3) */
676 #define SAB82532_CCR3_PSD 0x01
677 #define SAB82532_CCR3_RCRC 0x04
678 #endif
679
680 /* Time Slot Assignment Register Transmit (TSAX) */
681 #define SAB82532_TSAX_TSNX_MASK 0xfc
682 #define SAB82532_TSAX_XCS2 0x02 /* see also CCR2 */
683 #define SAB82532_TSAX_XCS1 0x01
684
685 /* Time Slot Assignment Register Receive (TSAR) */
686 #define SAB82532_TSAR_TSNR_MASK 0xfc
687 #define SAB82532_TSAR_RCS2 0x02 /* see also CCR2 */
688 #define SAB82532_TSAR_RCS1 0x01
689
690 /* Version Status Register (VSTR) */
691 #define SAB85232_REG_VSTR 0x34
692 #define SAB82532_VSTR_CD 0x80
693 #define SAB82532_VSTR_DPLA 0x40
694 #define SAB82532_VSTR_VN_MASK 0x0f
695 #define SAB82532_VSTR_VN_1 0x00
696 #define SAB82532_VSTR_VN_2 0x01
697 #define SAB82532_VSTR_VN_3_2 0x02
698
699 /* Global Interrupt Status Register (GIS) */
700 #define SAB82532_GIS_PI 0x80
701 #define SAB82532_GIS_ISA1 0x08
702 #define SAB82532_GIS_ISA0 0x04
703 #define SAB82532_GIS_ISB1 0x02
704 #define SAB82532_GIS_ISB0 0x01
705 #define SAB82532_GIS_MASK 0x8f
706 #define SAB82538_GIS_PIA 0x80
707 #define SAB82538_GIS_PIB 0x40
708 #define SAB82538_GIS_PIC 0x20
709 #define SAB82538_GIS_PID 0x10
710 #define SAB82538_GIS_CII 0x08
711 #define SAB82538_GIS_CHNL_MASK 0x07
712 #define SAB82538_GIS_MASK 0x28 /* Port C and CII ! */
713
714 /* Interrupt Vector Address (IVA) */
715 #define SAB82532_REG_IVA 0x38
716 #define SAB82532_IVA_MASK 0xf1
717 #define SAB82538_IVA_ROT 0x02
718
719 /* Interrupt Port Configuration (IPC) */
720 #define SAB82532_REG_IPC 0x39
721 #define SAB82532_IPC_VIS 0x80
722 #define SAB82532_IPC_SLA1 0x10
723 #define SAB82532_IPC_SLA0 0x08
724 #define SAB82532_IPC_CASM 0x04
725 #define SAB82532_IPC_IC_OPEN_DRAIN 0x00
726 #define SAB82532_IPC_IC_ACT_LOW 0x01
727 #define SAB82532_IPC_IC_ACT_HIGH 0x03
728
729 /* Interrupt Status Register 0 (ISR0) */
730 #define SAB82532_ISR0_TCD 0x80
731 #define SAB82532_ISR0_RME 0x80
732 #define SAB82532_ISR0_TIME 0x40
733 #define SAB82532_ISR0_RFS 0x40
734 #define SAB82532_ISR0_PERR 0x20
735 #define SAB82532_ISR0_FERR 0x10
736 #define SAB82532_ISR0_PLLA 0x08
737 #define SAB82532_ISR0_CDSC 0x04
738 #define SAB82532_ISR0_RFO 0x02
739 #define SAB82532_ISR0_RPF 0x01
740
741 /* Interrupt Status Register 1 (ISR1) */
742 #define SAB82532_ISR1_BRK 0x80
743 #define SAB82532_ISR1_BRKT 0x40
744 #define SAB82532_ISR1_RDO 0x40
745 #define SAB82532_ISR1_ALLS 0x20
746 #define SAB82532_ISR1_XOFF 0x10
747 #define SAB82532_ISR1_XDU 0x10
748 #define SAB82532_ISR1_TIN 0x08
749 #define SAB82532_ISR1_CSC 0x04
750 #define SAB82532_ISR1_XON 0x02
751 #define SAB82532_ISR1_XPR 0x01
752
753 /* Interrupt Mask Register 0 (IMR0) */
754 #define SAB82532_IMR0_TCD 0x80
755 #define SAB82532_IMR0_RME 0x80
756 #define SAB82532_IMR0_TIME 0x40
757 #define SAB82532_IMR0_RFS 0x40
758 #define SAB82532_IMR0_PERR 0x20
759 #define SAB82532_IMR0_RSC 0x20
760 #define SAB82532_IMR0_FERR 0x10
761 #define SAB82532_IMR0_PCE 0x10
762 #define SAB82532_IMR0_PLLA 0x08
763 #define SAB82532_IMR0_CDSC 0x04
764 #define SAB82532_IMR0_RFO 0x02
765 #define SAB82532_IMR0_RPF 0x01
766
767 /* Interrupt Mask Register 1 (IMR1) */
768 #define SAB82532_IMR1_BRK 0x80
769 #define SAB82532_IMR1_EOP 0x80
770 #define SAB82532_IMR1_BRKT 0x40
771 #define SAB82532_IMR1_RDO 0x40
772 #define SAB82532_IMR1_ALLS 0x20
773 #define SAB82532_IMR1_XOFF 0x10
774 #define SAB82532_IMR1_EXE 0x10
775 #define SAB82532_IMR1_TIN 0x08
776 #define SAB82532_IMR1_CSC 0x04
777 #define SAB82532_IMR1_XON 0x02
778 #define SAB82532_IMR1_XMR 0x02
779 #define SAB82532_IMR1_XPR 0x01
780
781 /* Port Value Register (PVR) */
782 #define SAB82532_REG_PVR 0x3c
783 #define SAB82538_REG_PVR_A 0x3c
784 #define SAB82538_REG_PVR_B 0xbc
785 #define SAB82538_REG_PVR_C 0x13c
786 #define SAB82538_REG_PVR_D 0x1bc
787
788 /* Port Value Register (PIM) */
789 #define SAB82532_REG_PIM 0x3d
790 #define SAB82538_REG_PIM_A 0x3d
791 #define SAB82538_REG_PIM_B 0xbd
792 #define SAB82538_REG_PIM_C 0x13d
793 #define SAB82538_REG_PIM_D 0x1bd
794 /* Port Value Register (PIS) */
795 #define SAB82532_REG_PIS 0x3d
796 #define SAB82538_REG_PIS_A 0x3d
797 #define SAB82538_REG_PIS_B 0xbd
798 #define SAB82538_REG_PIS_C 0x13d
799 #define SAB82538_REG_PIS_D 0x1bd
800
801 /* Port Value Register (PCR) */
802 #define SAB82532_REG_PCR 0x3e
803 #define SAB82538_REG_PCR_A 0x3e
804 #define SAB82538_REG_PCR_B 0xbe
805 #define SAB82538_REG_PCR_C 0x13e
806 #define SAB82538_REG_PCR_D 0x1be
807
808 /* leaving them for reference */
809 /* they are now defined in 8253xioc.h*/
810
811 #if 0
812 /* Channel Configuration Register 4 (CCR4) */
813 #define SAB82532_CCR4_MCK4 0x80/* needs to be set when board clock */
814 /* over 10 Mhz (?)*/
815 #define SAB82532_CCR4_EBRG 0x40
816 #define SAB82532_CCR4_TST1 0x20
817 #define SAB82532_CCR4_ICD 0x10
818 #endif
819
820
821 /* Port Interrupt Status Register (PIS) */
822 #define SAB82532_PIS_SYNC_B 0x08
823 #define SAB82532_PIS_DTR_B 0x04
824 #define SAB82532_PIS_DTR_A 0x02
825 #define SAB82532_PIS_SYNC_A 0x01
826
827
828 /* More things useful */
829 #define SAB_MAGIC 5977
830
831 /* When computing the baudrate, we "encode" it by multiplying
832 * the actual baudrate by 2. This way we can use 134.5
833 */
834 #define ENCODEBR(x) ((x)<<1)
835
836 /*
837 * Raise a modem signal y on port x, tmpval must exist! */
838 #define RAISE(xx,y) \
839 { \
840 unsigned char __tmpval__; \
841 __tmpval__= (xx)->readbyte((xx),(xx)->y.reg);\
842 if((xx)->y.inverted)\
843 __tmpval__ &= ~((xx)->y.mask);\
844 else\
845 __tmpval__ |= (xx)->y.mask;\
846 __tmpval__ |= (xx)->y.cnst;\
847 (xx)->y.val=1;\
848 (xx)->writebyte((xx),(xx)->y.reg,__tmpval__);\
849 }
850 /*
851 * Lower a modem signal y on port x, __tmpval__ must exist! */
852 #define LOWER(xx,y) \
853 {\
854 unsigned char __tmpval__; \
855 __tmpval__= (xx)->readbyte((xx),(xx)->y.reg);\
856 if((xx)->y.inverted)\
857 __tmpval__ |= (xx)->y.mask;\
858 else\
859 __tmpval__ &= ~((xx)->y.mask);\
860 __tmpval__ |= (xx)->y.cnst;\
861 (xx)->y.val=0;\
862 (xx)->writebyte((xx),(xx)->y.reg,__tmpval__);\
863 }
864
865 #define ISON(xx,y) \
866 ((xx)->y.inverted != (((xx)->readbyte((xx),(xx)->y.reg)&(xx)->y.mask) ==(xx)->y.mask) )
867 /*
868 * Now let's define all those functions we need else where.
869 *
870 * This should probably be reorganized
871 */
872 extern void sab8253x_setup_ttydriver(void);
873 extern int finish_sab8253x_setup_ttydriver(void);
874 extern void sab8253x_setup_ttyport(struct sab_port *port);
875 extern void sab8253x_cleanup_ttydriver(void);
876 extern void sab8253x_start_txS(struct sab_port *port);
877
sab8253x_serial_paranoia_check(struct sab_port * port,kdev_t device,const char * routine)878 static int inline sab8253x_serial_paranoia_check(struct sab_port *port,
879 kdev_t device, const char *routine)
880 {
881 #ifdef SERIAL_PARANOIA_CHECK
882 static const char *badmagic =
883 "Warning: bad magic number for serial struct (%s) in %s\n";
884 static const char *badinfo =
885 "Warning: null sab8253x for (%s) in %s\n";
886
887 if (!port)
888 {
889 printk(badinfo, kdevname(device), routine);
890 return 1;
891 }
892 if (port->magic != SAB_MAGIC)
893 {
894 printk(badmagic, kdevname(device), routine);
895 return 1;
896 }
897 #endif
898 return 0;
899 }
900
sab8253x_cec_wait(struct sab_port * port)901 static void inline sab8253x_cec_wait(struct sab_port *port)
902 {
903 int timeout = port->cec_timeout;
904
905 #if 1 /* seems to work for 82532s */
906 while ((READB(port, star) & SAB82532_STAR_CEC) && --timeout)
907 {
908 udelay(1);
909 }
910 #else
911 if (READB(port,star) & SAB82532_STAR_CEC)
912 {
913 udelay(1);
914 }
915 #endif
916 }
917
918 extern void sab8253x_transmit_charsS(struct sab_port *port, union sab8253x_irq_status *stat);
919 extern void sab8253x_flush_charsS(struct tty_struct *tty);
920 extern void sab8253x_set_termiosS(struct tty_struct *tty, struct termios *old_termios);
921 extern void sab8253x_stopS(struct tty_struct *tty);
922 extern void sab8253x_startS(struct tty_struct *tty);
923 extern void sab8253x_send_xcharS(struct tty_struct *tty, char ch);
924 extern void sab8253x_transmit_charsN(struct sab_port *port,
925 union sab8253x_irq_status *stat);
926 extern SAB_PORT *AuraPortRoot;
927
928 #define MAX_SAB8253X_RCV_QUEUE_LEN 50
929
930 struct ebrg_struct
931 {
932 int baud;
933 int n;
934 int m;
935 };
936
937 extern task_queue tq_8253x_serial;
938
939 extern int sab8253x_openS(struct tty_struct *tty, struct file * filp);
940 extern void sab8253x_closeS(struct tty_struct *tty, struct file * filp);
941 extern int sab8253x_writeS(struct tty_struct * tty, int from_user,
942 const unsigned char *buf, int count);
943 extern void sab8253x_throttleS(struct tty_struct * tty);
944 extern void sab8253x_unthrottleS(struct tty_struct * tty);
945 extern void sab8253x_hangupS(struct tty_struct *tty);
946 extern void sab8253x_breakS(struct tty_struct *tty, int break_state);
947 extern void Sab8253xCleanUpTransceiveN(SAB_PORT* priv);
948
949 /* used for running routines in the */
950 /* soft int part of the driver */
951 /* at one time the flip buffer routines */
952 /* seem to have been too time consuming */
953 /* to invoke in the hardware interrupt */
954 /* routing -- I am not so sure there is */
955 /* a problem with modern processor and */
956 /* memory speeds, but maybe there is a */
957 /* requirement that certain tty routines */
958 /* not be executed with ints turned off.*/
959
sab8253x_sched_event(struct sab_port * port,int event)960 static void inline sab8253x_sched_event(struct sab_port *port, int event)
961 {
962 port->event |= 1 << event;
963 queue_task(&port->tqueue, &tq_8253x_serial);
964 mark_bh(AURORA_BH);
965 }
966
967 extern unsigned int
968 sab8253x_baud(sab_port_t *port, unsigned long encbaud,
969 unsigned char *bgr, unsigned char *ccr2,
970 unsigned char *ccr4, unsigned long *truebaudp);
971 extern void Sab8253xFreeAllReceiveListSKBUFFS(SAB_PORT* priv);
972 extern int Sab8253xSetUpLists(SAB_PORT *priv);
973 extern int Sab8253xCountTransmitDescriptors(SAB_PORT *port);
974 extern int Sab8253xCountTransmit(SAB_PORT *port);
975 extern void sab8253x_init_lineS(struct sab_port *port);
976 extern void sab8253x_init_lineS(struct sab_port *port);
977 extern int getccr2configS(struct sab_port *port);
978 extern void sab8253x_change_speedN(struct sab_port *port);
979 extern void sab8253x_shutdownN(struct sab_port *port);
980 extern int sab8253x_startupN(struct sab_port *port);
981 extern int sab8253x_block_til_ready(struct tty_struct *tty, struct file * filp,
982 struct sab_port *port);
983 extern void sab8253x_wait_until_sent(struct tty_struct *tty, int timeout);
984 extern void sab8253x_flush_buffer(struct tty_struct *tty);
985 extern void aura_sp502_program(SAB_PORT *port, unsigned int index);
986 #endif
987