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[mirror_ubuntu-artful-kernel.git] / drivers / net / wan / pc300_drv.c
1 #define USE_PCI_CLOCK
2 static char rcsid[] =
3 "Revision: 3.4.5 Date: 2002/03/07 ";
4
5 /*
6 * pc300.c Cyclades-PC300(tm) Driver.
7 *
8 * Author: Ivan Passos <ivan@cyclades.com>
9 * Maintainer: PC300 Maintainer <pc300@cyclades.com>
10 *
11 * Copyright: (c) 1999-2003 Cyclades Corp.
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
17 *
18 * Using tabstop = 4.
19 *
20 * $Log: pc300_drv.c,v $
21 * Revision 3.23 2002/03/20 13:58:40 henrique
22 * Fixed ortographic mistakes
23 *
24 * Revision 3.22 2002/03/13 16:56:56 henrique
25 * Take out the debug messages
26 *
27 * Revision 3.21 2002/03/07 14:17:09 henrique
28 * License data fixed
29 *
30 * Revision 3.20 2002/01/17 17:58:52 ivan
31 * Support for PC300-TE/M (PMC).
32 *
33 * Revision 3.19 2002/01/03 17:08:47 daniela
34 * Enables DMA reception when the SCA-II disables it improperly.
35 *
36 * Revision 3.18 2001/12/03 18:47:50 daniela
37 * Esthetic changes.
38 *
39 * Revision 3.17 2001/10/19 16:50:13 henrique
40 * Patch to kernel 2.4.12 and new generic hdlc.
41 *
42 * Revision 3.16 2001/10/16 15:12:31 regina
43 * clear statistics
44 *
45 * Revision 3.11 to 3.15 2001/10/11 20:26:04 daniela
46 * More DMA fixes for noisy lines.
47 * Return the size of bad frames in dma_get_rx_frame_size, so that the Rx buffer
48 * descriptors can be cleaned by dma_buf_read (called in cpc_net_rx).
49 * Renamed dma_start routine to rx_dma_start. Improved Rx statistics.
50 * Fixed BOF interrupt treatment. Created dma_start routine.
51 * Changed min and max to cpc_min and cpc_max.
52 *
53 * Revision 3.10 2001/08/06 12:01:51 regina
54 * Fixed problem in DSR_DE bit.
55 *
56 * Revision 3.9 2001/07/18 19:27:26 daniela
57 * Added some history comments.
58 *
59 * Revision 3.8 2001/07/12 13:11:19 regina
60 * bug fix - DCD-OFF in pc300 tty driver
61 *
62 * Revision 3.3 to 3.7 2001/07/06 15:00:20 daniela
63 * Removing kernel 2.4.3 and previous support.
64 * DMA transmission bug fix.
65 * MTU check in cpc_net_rx fixed.
66 * Boot messages reviewed.
67 * New configuration parameters (line code, CRC calculation and clock).
68 *
69 * Revision 3.2 2001/06/22 13:13:02 regina
70 * MLPPP implementation. Changed the header of message trace to include
71 * the device name. New format : "hdlcX[R/T]: ".
72 * Default configuration changed.
73 *
74 * Revision 3.1 2001/06/15 regina
75 * in cpc_queue_xmit, netif_stop_queue is called if don't have free descriptor
76 * upping major version number
77 *
78 * Revision 1.1.1.1 2001/06/13 20:25:04 daniela
79 * PC300 initial CVS version (3.4.0-pre1)
80 *
81 * Revision 3.0.1.2 2001/06/08 daniela
82 * Did some changes in the DMA programming implementation to avoid the
83 * occurrence of a SCA-II bug when CDA is accessed during a DMA transfer.
84 *
85 * Revision 3.0.1.1 2001/05/02 daniela
86 * Added kernel 2.4.3 support.
87 *
88 * Revision 3.0.1.0 2001/03/13 daniela, henrique
89 * Added Frame Relay Support.
90 * Driver now uses HDLC generic driver to provide protocol support.
91 *
92 * Revision 3.0.0.8 2001/03/02 daniela
93 * Fixed ram size detection.
94 * Changed SIOCGPC300CONF ioctl, to give hw information to pc300util.
95 *
96 * Revision 3.0.0.7 2001/02/23 daniela
97 * netif_stop_queue called before the SCA-II transmition commands in
98 * cpc_queue_xmit, and with interrupts disabled to avoid race conditions with
99 * transmition interrupts.
100 * Fixed falc_check_status for Unframed E1.
101 *
102 * Revision 3.0.0.6 2000/12/13 daniela
103 * Implemented pc300util support: trace, statistics, status and loopback
104 * tests for the PC300 TE boards.
105 *
106 * Revision 3.0.0.5 2000/12/12 ivan
107 * Added support for Unframed E1.
108 * Implemented monitor mode.
109 * Fixed DCD sensitivity on the second channel.
110 * Driver now complies with new PCI kernel architecture.
111 *
112 * Revision 3.0.0.4 2000/09/28 ivan
113 * Implemented DCD sensitivity.
114 * Moved hardware-specific open to the end of cpc_open, to avoid race
115 * conditions with early reception interrupts.
116 * Included code for [request|release]_mem_region().
117 * Changed location of pc300.h .
118 * Minor code revision (contrib. of Jeff Garzik).
119 *
120 * Revision 3.0.0.3 2000/07/03 ivan
121 * Previous bugfix for the framing errors with external clock made X21
122 * boards stop working. This version fixes it.
123 *
124 * Revision 3.0.0.2 2000/06/23 ivan
125 * Revisited cpc_queue_xmit to prevent race conditions on Tx DMA buffer
126 * handling when Tx timeouts occur.
127 * Revisited Rx statistics.
128 * Fixed a bug in the SCA-II programming that would cause framing errors
129 * when external clock was configured.
130 *
131 * Revision 3.0.0.1 2000/05/26 ivan
132 * Added logic in the SCA interrupt handler so that no board can monopolize
133 * the driver.
134 * Request PLX I/O region, although driver doesn't use it, to avoid
135 * problems with other drivers accessing it.
136 *
137 * Revision 3.0.0.0 2000/05/15 ivan
138 * Did some changes in the DMA programming implementation to avoid the
139 * occurrence of a SCA-II bug in the second channel.
140 * Implemented workaround for PLX9050 bug that would cause a system lockup
141 * in certain systems, depending on the MMIO addresses allocated to the
142 * board.
143 * Fixed the FALC chip programming to avoid synchronization problems in the
144 * second channel (TE only).
145 * Implemented a cleaner and faster Tx DMA descriptor cleanup procedure in
146 * cpc_queue_xmit().
147 * Changed the built-in driver implementation so that the driver can use the
148 * general 'hdlcN' naming convention instead of proprietary device names.
149 * Driver load messages are now device-centric, instead of board-centric.
150 * Dynamic allocation of net_device structures.
151 * Code is now compliant with the new module interface (module_[init|exit]).
152 * Make use of the PCI helper functions to access PCI resources.
153 *
154 * Revision 2.0.0.0 2000/04/15 ivan
155 * Added support for the PC300/TE boards (T1/FT1/E1/FE1).
156 *
157 * Revision 1.1.0.0 2000/02/28 ivan
158 * Major changes in the driver architecture.
159 * Softnet compliancy implemented.
160 * Driver now reports physical instead of virtual memory addresses.
161 * Added cpc_change_mtu function.
162 *
163 * Revision 1.0.0.0 1999/12/16 ivan
164 * First official release.
165 * Support for 1- and 2-channel boards (which use distinct PCI Device ID's).
166 * Support for monolythic installation (i.e., drv built into the kernel).
167 * X.25 additional checking when lapb_[dis]connect_request returns an error.
168 * SCA programming now covers X.21 as well.
169 *
170 * Revision 0.3.1.0 1999/11/18 ivan
171 * Made X.25 support configuration-dependent (as it depends on external
172 * modules to work).
173 * Changed X.25-specific function names to comply with adopted convention.
174 * Fixed typos in X.25 functions that would cause compile errors (Daniela).
175 * Fixed bug in ch_config that would disable interrupts on a previously
176 * enabled channel if the other channel on the same board was enabled later.
177 *
178 * Revision 0.3.0.0 1999/11/16 daniela
179 * X.25 support.
180 *
181 * Revision 0.2.3.0 1999/11/15 ivan
182 * Function cpc_ch_status now provides more detailed information.
183 * Added support for X.21 clock configuration.
184 * Changed TNR1 setting in order to prevent Tx FIFO overaccesses by the SCA.
185 * Now using PCI clock instead of internal oscillator clock for the SCA.
186 *
187 * Revision 0.2.2.0 1999/11/10 ivan
188 * Changed the *_dma_buf_check functions so that they would print only
189 * the useful info instead of the whole buffer descriptor bank.
190 * Fixed bug in cpc_queue_xmit that would eventually crash the system
191 * in case of a packet drop.
192 * Implemented TX underrun handling.
193 * Improved SCA fine tuning to boost up its performance.
194 *
195 * Revision 0.2.1.0 1999/11/03 ivan
196 * Added functions *dma_buf_pt_init to allow independent initialization
197 * of the next-descr. and DMA buffer pointers on the DMA descriptors.
198 * Kernel buffer release and tbusy clearing is now done in the interrupt
199 * handler.
200 * Fixed bug in cpc_open that would cause an interface reopen to fail.
201 * Added a protocol-specific code section in cpc_net_rx.
202 * Removed printk level defs (they might be added back after the beta phase).
203 *
204 * Revision 0.2.0.0 1999/10/28 ivan
205 * Revisited the code so that new protocols can be easily added / supported.
206 *
207 * Revision 0.1.0.1 1999/10/20 ivan
208 * Mostly "esthetic" changes.
209 *
210 * Revision 0.1.0.0 1999/10/11 ivan
211 * Initial version.
212 *
213 */
214
215 #include <linux/module.h>
216 #include <linux/kernel.h>
217 #include <linux/mm.h>
218 #include <linux/ioport.h>
219 #include <linux/pci.h>
220 #include <linux/errno.h>
221 #include <linux/string.h>
222 #include <linux/init.h>
223 #include <linux/delay.h>
224 #include <linux/net.h>
225 #include <linux/skbuff.h>
226 #include <linux/if_arp.h>
227 #include <linux/netdevice.h>
228 #include <linux/spinlock.h>
229 #include <linux/if.h>
230
231 #include <net/syncppp.h>
232 #include <net/arp.h>
233
234 #include <asm/io.h>
235 #include <asm/uaccess.h>
236
237 #include "pc300.h"
238
239 #define CPC_LOCK(card,flags) \
240 do { \
241 spin_lock_irqsave(&card->card_lock, flags); \
242 } while (0)
243
244 #define CPC_UNLOCK(card,flags) \
245 do { \
246 spin_unlock_irqrestore(&card->card_lock, flags); \
247 } while (0)
248
249 #undef PC300_DEBUG_PCI
250 #undef PC300_DEBUG_INTR
251 #undef PC300_DEBUG_TX
252 #undef PC300_DEBUG_RX
253 #undef PC300_DEBUG_OTHER
254
255 static struct pci_device_id cpc_pci_dev_id[] __devinitdata = {
256 /* PC300/RSV or PC300/X21, 2 chan */
257 {0x120e, 0x300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x300},
258 /* PC300/RSV or PC300/X21, 1 chan */
259 {0x120e, 0x301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x301},
260 /* PC300/TE, 2 chan */
261 {0x120e, 0x310, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x310},
262 /* PC300/TE, 1 chan */
263 {0x120e, 0x311, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x311},
264 /* PC300/TE-M, 2 chan */
265 {0x120e, 0x320, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x320},
266 /* PC300/TE-M, 1 chan */
267 {0x120e, 0x321, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0x321},
268 /* End of table */
269 {0,},
270 };
271 MODULE_DEVICE_TABLE(pci, cpc_pci_dev_id);
272
273 #ifndef cpc_min
274 #define cpc_min(a,b) (((a)<(b))?(a):(b))
275 #endif
276 #ifndef cpc_max
277 #define cpc_max(a,b) (((a)>(b))?(a):(b))
278 #endif
279
280 /* prototypes */
281 static void tx_dma_buf_pt_init(pc300_t *, int);
282 static void tx_dma_buf_init(pc300_t *, int);
283 static void rx_dma_buf_pt_init(pc300_t *, int);
284 static void rx_dma_buf_init(pc300_t *, int);
285 static void tx_dma_buf_check(pc300_t *, int);
286 static void rx_dma_buf_check(pc300_t *, int);
287 static irqreturn_t cpc_intr(int, void *, struct pt_regs *);
288 static struct net_device_stats *cpc_get_stats(struct net_device *);
289 static int clock_rate_calc(uclong, uclong, int *);
290 static uclong detect_ram(pc300_t *);
291 static void plx_init(pc300_t *);
292 static void cpc_trace(struct net_device *, struct sk_buff *, char);
293 static int cpc_attach(struct net_device *, unsigned short, unsigned short);
294
295 #ifdef CONFIG_PC300_MLPPP
296 void cpc_tty_init(pc300dev_t * dev);
297 void cpc_tty_unregister_service(pc300dev_t * pc300dev);
298 void cpc_tty_receive(pc300dev_t * pc300dev);
299 void cpc_tty_trigger_poll(pc300dev_t * pc300dev);
300 void cpc_tty_reset_var(void);
301 #endif
302
303 /************************/
304 /*** DMA Routines ***/
305 /************************/
306 static void tx_dma_buf_pt_init(pc300_t * card, int ch)
307 {
308 int i;
309 int ch_factor = ch * N_DMA_TX_BUF;
310 volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
311 + DMA_TX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
312
313 for (i = 0; i < N_DMA_TX_BUF; i++, ptdescr++) {
314 cpc_writel(&ptdescr->next, (uclong) (DMA_TX_BD_BASE +
315 (ch_factor + ((i + 1) & (N_DMA_TX_BUF - 1))) * sizeof(pcsca_bd_t)));
316 cpc_writel(&ptdescr->ptbuf,
317 (uclong) (DMA_TX_BASE + (ch_factor + i) * BD_DEF_LEN));
318 }
319 }
320
321 static void tx_dma_buf_init(pc300_t * card, int ch)
322 {
323 int i;
324 int ch_factor = ch * N_DMA_TX_BUF;
325 volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
326 + DMA_TX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
327
328 for (i = 0; i < N_DMA_TX_BUF; i++, ptdescr++) {
329 memset_io(ptdescr, 0, sizeof(pcsca_bd_t));
330 cpc_writew(&ptdescr->len, 0);
331 cpc_writeb(&ptdescr->status, DST_OSB);
332 }
333 tx_dma_buf_pt_init(card, ch);
334 }
335
336 static void rx_dma_buf_pt_init(pc300_t * card, int ch)
337 {
338 int i;
339 int ch_factor = ch * N_DMA_RX_BUF;
340 volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
341 + DMA_RX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
342
343 for (i = 0; i < N_DMA_RX_BUF; i++, ptdescr++) {
344 cpc_writel(&ptdescr->next, (uclong) (DMA_RX_BD_BASE +
345 (ch_factor + ((i + 1) & (N_DMA_RX_BUF - 1))) * sizeof(pcsca_bd_t)));
346 cpc_writel(&ptdescr->ptbuf,
347 (uclong) (DMA_RX_BASE + (ch_factor + i) * BD_DEF_LEN));
348 }
349 }
350
351 static void rx_dma_buf_init(pc300_t * card, int ch)
352 {
353 int i;
354 int ch_factor = ch * N_DMA_RX_BUF;
355 volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
356 + DMA_RX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
357
358 for (i = 0; i < N_DMA_RX_BUF; i++, ptdescr++) {
359 memset_io(ptdescr, 0, sizeof(pcsca_bd_t));
360 cpc_writew(&ptdescr->len, 0);
361 cpc_writeb(&ptdescr->status, 0);
362 }
363 rx_dma_buf_pt_init(card, ch);
364 }
365
366 static void tx_dma_buf_check(pc300_t * card, int ch)
367 {
368 volatile pcsca_bd_t __iomem *ptdescr;
369 int i;
370 ucshort first_bd = card->chan[ch].tx_first_bd;
371 ucshort next_bd = card->chan[ch].tx_next_bd;
372
373 printk("#CH%d: f_bd = %d(0x%08zx), n_bd = %d(0x%08zx)\n", ch,
374 first_bd, TX_BD_ADDR(ch, first_bd),
375 next_bd, TX_BD_ADDR(ch, next_bd));
376 for (i = first_bd,
377 ptdescr = (card->hw.rambase + TX_BD_ADDR(ch, first_bd));
378 i != ((next_bd + 1) & (N_DMA_TX_BUF - 1));
379 i = (i + 1) & (N_DMA_TX_BUF - 1),
380 ptdescr = (card->hw.rambase + TX_BD_ADDR(ch, i))) {
381 printk("\n CH%d TX%d: next=0x%x, ptbuf=0x%x, ST=0x%x, len=%d",
382 ch, i, cpc_readl(&ptdescr->next),
383 cpc_readl(&ptdescr->ptbuf),
384 cpc_readb(&ptdescr->status), cpc_readw(&ptdescr->len));
385 }
386 printk("\n");
387 }
388
389 #ifdef PC300_DEBUG_OTHER
390 /* Show all TX buffer descriptors */
391 static void tx1_dma_buf_check(pc300_t * card, int ch)
392 {
393 volatile pcsca_bd_t __iomem *ptdescr;
394 int i;
395 ucshort first_bd = card->chan[ch].tx_first_bd;
396 ucshort next_bd = card->chan[ch].tx_next_bd;
397 uclong scabase = card->hw.scabase;
398
399 printk ("\nnfree_tx_bd = %d \n", card->chan[ch].nfree_tx_bd);
400 printk("#CH%d: f_bd = %d(0x%08x), n_bd = %d(0x%08x)\n", ch,
401 first_bd, TX_BD_ADDR(ch, first_bd),
402 next_bd, TX_BD_ADDR(ch, next_bd));
403 printk("TX_CDA=0x%08x, TX_EDA=0x%08x\n",
404 cpc_readl(scabase + DTX_REG(CDAL, ch)),
405 cpc_readl(scabase + DTX_REG(EDAL, ch)));
406 for (i = 0; i < N_DMA_TX_BUF; i++) {
407 ptdescr = (card->hw.rambase + TX_BD_ADDR(ch, i));
408 printk("\n CH%d TX%d: next=0x%x, ptbuf=0x%x, ST=0x%x, len=%d",
409 ch, i, cpc_readl(&ptdescr->next),
410 cpc_readl(&ptdescr->ptbuf),
411 cpc_readb(&ptdescr->status), cpc_readw(&ptdescr->len));
412 }
413 printk("\n");
414 }
415 #endif
416
417 static void rx_dma_buf_check(pc300_t * card, int ch)
418 {
419 volatile pcsca_bd_t __iomem *ptdescr;
420 int i;
421 ucshort first_bd = card->chan[ch].rx_first_bd;
422 ucshort last_bd = card->chan[ch].rx_last_bd;
423 int ch_factor;
424
425 ch_factor = ch * N_DMA_RX_BUF;
426 printk("#CH%d: f_bd = %d, l_bd = %d\n", ch, first_bd, last_bd);
427 for (i = 0, ptdescr = (card->hw.rambase +
428 DMA_RX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
429 i < N_DMA_RX_BUF; i++, ptdescr++) {
430 if (cpc_readb(&ptdescr->status) & DST_OSB)
431 printk ("\n CH%d RX%d: next=0x%x, ptbuf=0x%x, ST=0x%x, len=%d",
432 ch, i, cpc_readl(&ptdescr->next),
433 cpc_readl(&ptdescr->ptbuf),
434 cpc_readb(&ptdescr->status),
435 cpc_readw(&ptdescr->len));
436 }
437 printk("\n");
438 }
439
440 int dma_get_rx_frame_size(pc300_t * card, int ch)
441 {
442 volatile pcsca_bd_t __iomem *ptdescr;
443 ucshort first_bd = card->chan[ch].rx_first_bd;
444 int rcvd = 0;
445 volatile ucchar status;
446
447 ptdescr = (card->hw.rambase + RX_BD_ADDR(ch, first_bd));
448 while ((status = cpc_readb(&ptdescr->status)) & DST_OSB) {
449 rcvd += cpc_readw(&ptdescr->len);
450 first_bd = (first_bd + 1) & (N_DMA_RX_BUF - 1);
451 if ((status & DST_EOM) || (first_bd == card->chan[ch].rx_last_bd)) {
452 /* Return the size of a good frame or incomplete bad frame
453 * (dma_buf_read will clean the buffer descriptors in this case). */
454 return (rcvd);
455 }
456 ptdescr = (card->hw.rambase + cpc_readl(&ptdescr->next));
457 }
458 return (-1);
459 }
460
461 /*
462 * dma_buf_write: writes a frame to the Tx DMA buffers
463 * NOTE: this function writes one frame at a time.
464 */
465 int dma_buf_write(pc300_t * card, int ch, ucchar * ptdata, int len)
466 {
467 int i, nchar;
468 volatile pcsca_bd_t __iomem *ptdescr;
469 int tosend = len;
470 ucchar nbuf = ((len - 1) / BD_DEF_LEN) + 1;
471
472 if (nbuf >= card->chan[ch].nfree_tx_bd) {
473 return -ENOMEM;
474 }
475
476 for (i = 0; i < nbuf; i++) {
477 ptdescr = (card->hw.rambase +
478 TX_BD_ADDR(ch, card->chan[ch].tx_next_bd));
479 nchar = cpc_min(BD_DEF_LEN, tosend);
480 if (cpc_readb(&ptdescr->status) & DST_OSB) {
481 memcpy_toio((card->hw.rambase + cpc_readl(&ptdescr->ptbuf)),
482 &ptdata[len - tosend], nchar);
483 cpc_writew(&ptdescr->len, nchar);
484 card->chan[ch].nfree_tx_bd--;
485 if ((i + 1) == nbuf) {
486 /* This must be the last BD to be used */
487 cpc_writeb(&ptdescr->status, DST_EOM);
488 } else {
489 cpc_writeb(&ptdescr->status, 0);
490 }
491 } else {
492 return -ENOMEM;
493 }
494 tosend -= nchar;
495 card->chan[ch].tx_next_bd =
496 (card->chan[ch].tx_next_bd + 1) & (N_DMA_TX_BUF - 1);
497 }
498 /* If it gets to here, it means we have sent the whole frame */
499 return 0;
500 }
501
502 /*
503 * dma_buf_read: reads a frame from the Rx DMA buffers
504 * NOTE: this function reads one frame at a time.
505 */
506 int dma_buf_read(pc300_t * card, int ch, struct sk_buff *skb)
507 {
508 int nchar;
509 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
510 volatile pcsca_bd_t __iomem *ptdescr;
511 int rcvd = 0;
512 volatile ucchar status;
513
514 ptdescr = (card->hw.rambase +
515 RX_BD_ADDR(ch, chan->rx_first_bd));
516 while ((status = cpc_readb(&ptdescr->status)) & DST_OSB) {
517 nchar = cpc_readw(&ptdescr->len);
518 if ((status & (DST_OVR | DST_CRC | DST_RBIT | DST_SHRT | DST_ABT))
519 || (nchar > BD_DEF_LEN)) {
520
521 if (nchar > BD_DEF_LEN)
522 status |= DST_RBIT;
523 rcvd = -status;
524 /* Discard remaining descriptors used by the bad frame */
525 while (chan->rx_first_bd != chan->rx_last_bd) {
526 cpc_writeb(&ptdescr->status, 0);
527 chan->rx_first_bd = (chan->rx_first_bd+1) & (N_DMA_RX_BUF-1);
528 if (status & DST_EOM)
529 break;
530 ptdescr = (card->hw.rambase +
531 cpc_readl(&ptdescr->next));
532 status = cpc_readb(&ptdescr->status);
533 }
534 break;
535 }
536 if (nchar != 0) {
537 if (skb) {
538 memcpy_fromio(skb_put(skb, nchar),
539 (card->hw.rambase+cpc_readl(&ptdescr->ptbuf)),nchar);
540 }
541 rcvd += nchar;
542 }
543 cpc_writeb(&ptdescr->status, 0);
544 cpc_writeb(&ptdescr->len, 0);
545 chan->rx_first_bd = (chan->rx_first_bd + 1) & (N_DMA_RX_BUF - 1);
546
547 if (status & DST_EOM)
548 break;
549
550 ptdescr = (card->hw.rambase + cpc_readl(&ptdescr->next));
551 }
552
553 if (rcvd != 0) {
554 /* Update pointer */
555 chan->rx_last_bd = (chan->rx_first_bd - 1) & (N_DMA_RX_BUF - 1);
556 /* Update EDA */
557 cpc_writel(card->hw.scabase + DRX_REG(EDAL, ch),
558 RX_BD_ADDR(ch, chan->rx_last_bd));
559 }
560 return (rcvd);
561 }
562
563 void tx_dma_stop(pc300_t * card, int ch)
564 {
565 void __iomem *scabase = card->hw.scabase;
566 ucchar drr_ena_bit = 1 << (5 + 2 * ch);
567 ucchar drr_rst_bit = 1 << (1 + 2 * ch);
568
569 /* Disable DMA */
570 cpc_writeb(scabase + DRR, drr_ena_bit);
571 cpc_writeb(scabase + DRR, drr_rst_bit & ~drr_ena_bit);
572 }
573
574 void rx_dma_stop(pc300_t * card, int ch)
575 {
576 void __iomem *scabase = card->hw.scabase;
577 ucchar drr_ena_bit = 1 << (4 + 2 * ch);
578 ucchar drr_rst_bit = 1 << (2 * ch);
579
580 /* Disable DMA */
581 cpc_writeb(scabase + DRR, drr_ena_bit);
582 cpc_writeb(scabase + DRR, drr_rst_bit & ~drr_ena_bit);
583 }
584
585 void rx_dma_start(pc300_t * card, int ch)
586 {
587 void __iomem *scabase = card->hw.scabase;
588 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
589
590 /* Start DMA */
591 cpc_writel(scabase + DRX_REG(CDAL, ch),
592 RX_BD_ADDR(ch, chan->rx_first_bd));
593 if (cpc_readl(scabase + DRX_REG(CDAL,ch)) !=
594 RX_BD_ADDR(ch, chan->rx_first_bd)) {
595 cpc_writel(scabase + DRX_REG(CDAL, ch),
596 RX_BD_ADDR(ch, chan->rx_first_bd));
597 }
598 cpc_writel(scabase + DRX_REG(EDAL, ch),
599 RX_BD_ADDR(ch, chan->rx_last_bd));
600 cpc_writew(scabase + DRX_REG(BFLL, ch), BD_DEF_LEN);
601 cpc_writeb(scabase + DSR_RX(ch), DSR_DE);
602 if (!(cpc_readb(scabase + DSR_RX(ch)) & DSR_DE)) {
603 cpc_writeb(scabase + DSR_RX(ch), DSR_DE);
604 }
605 }
606
607 /*************************/
608 /*** FALC Routines ***/
609 /*************************/
610 void falc_issue_cmd(pc300_t * card, int ch, ucchar cmd)
611 {
612 void __iomem *falcbase = card->hw.falcbase;
613 unsigned long i = 0;
614
615 while (cpc_readb(falcbase + F_REG(SIS, ch)) & SIS_CEC) {
616 if (i++ >= PC300_FALC_MAXLOOP) {
617 printk("%s: FALC command locked(cmd=0x%x).\n",
618 card->chan[ch].d.name, cmd);
619 break;
620 }
621 }
622 cpc_writeb(falcbase + F_REG(CMDR, ch), cmd);
623 }
624
625 void falc_intr_enable(pc300_t * card, int ch)
626 {
627 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
628 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
629 falc_t *pfalc = (falc_t *) & chan->falc;
630 void __iomem *falcbase = card->hw.falcbase;
631
632 /* Interrupt pins are open-drain */
633 cpc_writeb(falcbase + F_REG(IPC, ch),
634 cpc_readb(falcbase + F_REG(IPC, ch)) & ~IPC_IC0);
635 /* Conters updated each second */
636 cpc_writeb(falcbase + F_REG(FMR1, ch),
637 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_ECM);
638 /* Enable SEC and ES interrupts */
639 cpc_writeb(falcbase + F_REG(IMR3, ch),
640 cpc_readb(falcbase + F_REG(IMR3, ch)) & ~(IMR3_SEC | IMR3_ES));
641 if (conf->fr_mode == PC300_FR_UNFRAMED) {
642 cpc_writeb(falcbase + F_REG(IMR4, ch),
643 cpc_readb(falcbase + F_REG(IMR4, ch)) & ~(IMR4_LOS));
644 } else {
645 cpc_writeb(falcbase + F_REG(IMR4, ch),
646 cpc_readb(falcbase + F_REG(IMR4, ch)) &
647 ~(IMR4_LFA | IMR4_AIS | IMR4_LOS | IMR4_SLIP));
648 }
649 if (conf->media == IF_IFACE_T1) {
650 cpc_writeb(falcbase + F_REG(IMR3, ch),
651 cpc_readb(falcbase + F_REG(IMR3, ch)) & ~IMR3_LLBSC);
652 } else {
653 cpc_writeb(falcbase + F_REG(IPC, ch),
654 cpc_readb(falcbase + F_REG(IPC, ch)) | IPC_SCI);
655 if (conf->fr_mode == PC300_FR_UNFRAMED) {
656 cpc_writeb(falcbase + F_REG(IMR2, ch),
657 cpc_readb(falcbase + F_REG(IMR2, ch)) & ~(IMR2_LOS));
658 } else {
659 cpc_writeb(falcbase + F_REG(IMR2, ch),
660 cpc_readb(falcbase + F_REG(IMR2, ch)) &
661 ~(IMR2_FAR | IMR2_LFA | IMR2_AIS | IMR2_LOS));
662 if (pfalc->multiframe_mode) {
663 cpc_writeb(falcbase + F_REG(IMR2, ch),
664 cpc_readb(falcbase + F_REG(IMR2, ch)) &
665 ~(IMR2_T400MS | IMR2_MFAR));
666 } else {
667 cpc_writeb(falcbase + F_REG(IMR2, ch),
668 cpc_readb(falcbase + F_REG(IMR2, ch)) |
669 IMR2_T400MS | IMR2_MFAR);
670 }
671 }
672 }
673 }
674
675 void falc_open_timeslot(pc300_t * card, int ch, int timeslot)
676 {
677 void __iomem *falcbase = card->hw.falcbase;
678 ucchar tshf = card->chan[ch].falc.offset;
679
680 cpc_writeb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch),
681 cpc_readb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch)) &
682 ~(0x80 >> ((timeslot - tshf) & 0x07)));
683 cpc_writeb(falcbase + F_REG((TTR1 + timeslot / 8), ch),
684 cpc_readb(falcbase + F_REG((TTR1 + timeslot / 8), ch)) |
685 (0x80 >> (timeslot & 0x07)));
686 cpc_writeb(falcbase + F_REG((RTR1 + timeslot / 8), ch),
687 cpc_readb(falcbase + F_REG((RTR1 + timeslot / 8), ch)) |
688 (0x80 >> (timeslot & 0x07)));
689 }
690
691 void falc_close_timeslot(pc300_t * card, int ch, int timeslot)
692 {
693 void __iomem *falcbase = card->hw.falcbase;
694 ucchar tshf = card->chan[ch].falc.offset;
695
696 cpc_writeb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch),
697 cpc_readb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch)) |
698 (0x80 >> ((timeslot - tshf) & 0x07)));
699 cpc_writeb(falcbase + F_REG((TTR1 + timeslot / 8), ch),
700 cpc_readb(falcbase + F_REG((TTR1 + timeslot / 8), ch)) &
701 ~(0x80 >> (timeslot & 0x07)));
702 cpc_writeb(falcbase + F_REG((RTR1 + timeslot / 8), ch),
703 cpc_readb(falcbase + F_REG((RTR1 + timeslot / 8), ch)) &
704 ~(0x80 >> (timeslot & 0x07)));
705 }
706
707 void falc_close_all_timeslots(pc300_t * card, int ch)
708 {
709 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
710 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
711 void __iomem *falcbase = card->hw.falcbase;
712
713 cpc_writeb(falcbase + F_REG(ICB1, ch), 0xff);
714 cpc_writeb(falcbase + F_REG(TTR1, ch), 0);
715 cpc_writeb(falcbase + F_REG(RTR1, ch), 0);
716 cpc_writeb(falcbase + F_REG(ICB2, ch), 0xff);
717 cpc_writeb(falcbase + F_REG(TTR2, ch), 0);
718 cpc_writeb(falcbase + F_REG(RTR2, ch), 0);
719 cpc_writeb(falcbase + F_REG(ICB3, ch), 0xff);
720 cpc_writeb(falcbase + F_REG(TTR3, ch), 0);
721 cpc_writeb(falcbase + F_REG(RTR3, ch), 0);
722 if (conf->media == IF_IFACE_E1) {
723 cpc_writeb(falcbase + F_REG(ICB4, ch), 0xff);
724 cpc_writeb(falcbase + F_REG(TTR4, ch), 0);
725 cpc_writeb(falcbase + F_REG(RTR4, ch), 0);
726 }
727 }
728
729 void falc_open_all_timeslots(pc300_t * card, int ch)
730 {
731 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
732 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
733 void __iomem *falcbase = card->hw.falcbase;
734
735 cpc_writeb(falcbase + F_REG(ICB1, ch), 0);
736 if (conf->fr_mode == PC300_FR_UNFRAMED) {
737 cpc_writeb(falcbase + F_REG(TTR1, ch), 0xff);
738 cpc_writeb(falcbase + F_REG(RTR1, ch), 0xff);
739 } else {
740 /* Timeslot 0 is never enabled */
741 cpc_writeb(falcbase + F_REG(TTR1, ch), 0x7f);
742 cpc_writeb(falcbase + F_REG(RTR1, ch), 0x7f);
743 }
744 cpc_writeb(falcbase + F_REG(ICB2, ch), 0);
745 cpc_writeb(falcbase + F_REG(TTR2, ch), 0xff);
746 cpc_writeb(falcbase + F_REG(RTR2, ch), 0xff);
747 cpc_writeb(falcbase + F_REG(ICB3, ch), 0);
748 cpc_writeb(falcbase + F_REG(TTR3, ch), 0xff);
749 cpc_writeb(falcbase + F_REG(RTR3, ch), 0xff);
750 if (conf->media == IF_IFACE_E1) {
751 cpc_writeb(falcbase + F_REG(ICB4, ch), 0);
752 cpc_writeb(falcbase + F_REG(TTR4, ch), 0xff);
753 cpc_writeb(falcbase + F_REG(RTR4, ch), 0xff);
754 } else {
755 cpc_writeb(falcbase + F_REG(ICB4, ch), 0xff);
756 cpc_writeb(falcbase + F_REG(TTR4, ch), 0x80);
757 cpc_writeb(falcbase + F_REG(RTR4, ch), 0x80);
758 }
759 }
760
761 void falc_init_timeslot(pc300_t * card, int ch)
762 {
763 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
764 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
765 falc_t *pfalc = (falc_t *) & chan->falc;
766 int tslot;
767
768 for (tslot = 0; tslot < pfalc->num_channels; tslot++) {
769 if (conf->tslot_bitmap & (1 << tslot)) {
770 // Channel enabled
771 falc_open_timeslot(card, ch, tslot + 1);
772 } else {
773 // Channel disabled
774 falc_close_timeslot(card, ch, tslot + 1);
775 }
776 }
777 }
778
779 void falc_enable_comm(pc300_t * card, int ch)
780 {
781 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
782 falc_t *pfalc = (falc_t *) & chan->falc;
783
784 if (pfalc->full_bandwidth) {
785 falc_open_all_timeslots(card, ch);
786 } else {
787 falc_init_timeslot(card, ch);
788 }
789 // CTS/DCD ON
790 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
791 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) &
792 ~((CPLD_REG1_FALC_DCD | CPLD_REG1_FALC_CTS) << (2 * ch)));
793 }
794
795 void falc_disable_comm(pc300_t * card, int ch)
796 {
797 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
798 falc_t *pfalc = (falc_t *) & chan->falc;
799
800 if (pfalc->loop_active != 2) {
801 falc_close_all_timeslots(card, ch);
802 }
803 // CTS/DCD OFF
804 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
805 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
806 ((CPLD_REG1_FALC_DCD | CPLD_REG1_FALC_CTS) << (2 * ch)));
807 }
808
809 void falc_init_t1(pc300_t * card, int ch)
810 {
811 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
812 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
813 falc_t *pfalc = (falc_t *) & chan->falc;
814 void __iomem *falcbase = card->hw.falcbase;
815 ucchar dja = (ch ? (LIM2_DJA2 | LIM2_DJA1) : 0);
816
817 /* Switch to T1 mode (PCM 24) */
818 cpc_writeb(falcbase + F_REG(FMR1, ch), FMR1_PMOD);
819
820 /* Wait 20 us for setup */
821 udelay(20);
822
823 /* Transmit Buffer Size (1 frame) */
824 cpc_writeb(falcbase + F_REG(SIC1, ch), SIC1_XBS0);
825
826 /* Clock mode */
827 if (conf->phys_settings.clock_type == CLOCK_INT) { /* Master mode */
828 cpc_writeb(falcbase + F_REG(LIM0, ch),
829 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_MAS);
830 } else { /* Slave mode */
831 cpc_writeb(falcbase + F_REG(LIM0, ch),
832 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_MAS);
833 cpc_writeb(falcbase + F_REG(LOOP, ch),
834 cpc_readb(falcbase + F_REG(LOOP, ch)) & ~LOOP_RTM);
835 }
836
837 cpc_writeb(falcbase + F_REG(IPC, ch), IPC_SCI);
838 cpc_writeb(falcbase + F_REG(FMR0, ch),
839 cpc_readb(falcbase + F_REG(FMR0, ch)) &
840 ~(FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1));
841
842 switch (conf->lcode) {
843 case PC300_LC_AMI:
844 cpc_writeb(falcbase + F_REG(FMR0, ch),
845 cpc_readb(falcbase + F_REG(FMR0, ch)) |
846 FMR0_XC1 | FMR0_RC1);
847 /* Clear Channel register to ON for all channels */
848 cpc_writeb(falcbase + F_REG(CCB1, ch), 0xff);
849 cpc_writeb(falcbase + F_REG(CCB2, ch), 0xff);
850 cpc_writeb(falcbase + F_REG(CCB3, ch), 0xff);
851 break;
852
853 case PC300_LC_B8ZS:
854 cpc_writeb(falcbase + F_REG(FMR0, ch),
855 cpc_readb(falcbase + F_REG(FMR0, ch)) |
856 FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1);
857 break;
858
859 case PC300_LC_NRZ:
860 cpc_writeb(falcbase + F_REG(FMR0, ch),
861 cpc_readb(falcbase + F_REG(FMR0, ch)) | 0x00);
862 break;
863 }
864
865 cpc_writeb(falcbase + F_REG(LIM0, ch),
866 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_ELOS);
867 cpc_writeb(falcbase + F_REG(LIM0, ch),
868 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~(LIM0_SCL1 | LIM0_SCL0));
869 /* Set interface mode to 2 MBPS */
870 cpc_writeb(falcbase + F_REG(FMR1, ch),
871 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_IMOD);
872
873 switch (conf->fr_mode) {
874 case PC300_FR_ESF:
875 pfalc->multiframe_mode = 0;
876 cpc_writeb(falcbase + F_REG(FMR4, ch),
877 cpc_readb(falcbase + F_REG(FMR4, ch)) | FMR4_FM1);
878 cpc_writeb(falcbase + F_REG(FMR1, ch),
879 cpc_readb(falcbase + F_REG(FMR1, ch)) |
880 FMR1_CRC | FMR1_EDL);
881 cpc_writeb(falcbase + F_REG(XDL1, ch), 0);
882 cpc_writeb(falcbase + F_REG(XDL2, ch), 0);
883 cpc_writeb(falcbase + F_REG(XDL3, ch), 0);
884 cpc_writeb(falcbase + F_REG(FMR0, ch),
885 cpc_readb(falcbase + F_REG(FMR0, ch)) & ~FMR0_SRAF);
886 cpc_writeb(falcbase + F_REG(FMR2, ch),
887 cpc_readb(falcbase + F_REG(FMR2,ch)) | FMR2_MCSP | FMR2_SSP);
888 break;
889
890 case PC300_FR_D4:
891 pfalc->multiframe_mode = 1;
892 cpc_writeb(falcbase + F_REG(FMR4, ch),
893 cpc_readb(falcbase + F_REG(FMR4, ch)) &
894 ~(FMR4_FM1 | FMR4_FM0));
895 cpc_writeb(falcbase + F_REG(FMR0, ch),
896 cpc_readb(falcbase + F_REG(FMR0, ch)) | FMR0_SRAF);
897 cpc_writeb(falcbase + F_REG(FMR2, ch),
898 cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_SSP);
899 break;
900 }
901
902 /* Enable Automatic Resynchronization */
903 cpc_writeb(falcbase + F_REG(FMR4, ch),
904 cpc_readb(falcbase + F_REG(FMR4, ch)) | FMR4_AUTO);
905
906 /* Transmit Automatic Remote Alarm */
907 cpc_writeb(falcbase + F_REG(FMR2, ch),
908 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_AXRA);
909
910 /* Channel translation mode 1 : one to one */
911 cpc_writeb(falcbase + F_REG(FMR1, ch),
912 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_CTM);
913
914 /* No signaling */
915 cpc_writeb(falcbase + F_REG(FMR1, ch),
916 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_SIGM);
917 cpc_writeb(falcbase + F_REG(FMR5, ch),
918 cpc_readb(falcbase + F_REG(FMR5, ch)) &
919 ~(FMR5_EIBR | FMR5_SRS));
920 cpc_writeb(falcbase + F_REG(CCR1, ch), 0);
921
922 cpc_writeb(falcbase + F_REG(LIM1, ch),
923 cpc_readb(falcbase + F_REG(LIM1, ch)) | LIM1_RIL0 | LIM1_RIL1);
924
925 switch (conf->lbo) {
926 /* Provides proper Line Build Out */
927 case PC300_LBO_0_DB:
928 cpc_writeb(falcbase + F_REG(LIM2, ch), (LIM2_LOS1 | dja));
929 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x5a);
930 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x8f);
931 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
932 break;
933 case PC300_LBO_7_5_DB:
934 cpc_writeb(falcbase + F_REG(LIM2, ch), (0x40 | LIM2_LOS1 | dja));
935 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x11);
936 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x02);
937 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
938 break;
939 case PC300_LBO_15_DB:
940 cpc_writeb(falcbase + F_REG(LIM2, ch), (0x80 | LIM2_LOS1 | dja));
941 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x8e);
942 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x01);
943 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
944 break;
945 case PC300_LBO_22_5_DB:
946 cpc_writeb(falcbase + F_REG(LIM2, ch), (0xc0 | LIM2_LOS1 | dja));
947 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x09);
948 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x01);
949 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
950 break;
951 }
952
953 /* Transmit Clock-Slot Offset */
954 cpc_writeb(falcbase + F_REG(XC0, ch),
955 cpc_readb(falcbase + F_REG(XC0, ch)) | 0x01);
956 /* Transmit Time-slot Offset */
957 cpc_writeb(falcbase + F_REG(XC1, ch), 0x3e);
958 /* Receive Clock-Slot offset */
959 cpc_writeb(falcbase + F_REG(RC0, ch), 0x05);
960 /* Receive Time-slot offset */
961 cpc_writeb(falcbase + F_REG(RC1, ch), 0x00);
962
963 /* LOS Detection after 176 consecutive 0s */
964 cpc_writeb(falcbase + F_REG(PCDR, ch), 0x0a);
965 /* LOS Recovery after 22 ones in the time window of PCD */
966 cpc_writeb(falcbase + F_REG(PCRR, ch), 0x15);
967
968 cpc_writeb(falcbase + F_REG(IDLE, ch), 0x7f);
969
970 if (conf->fr_mode == PC300_FR_ESF_JAPAN) {
971 cpc_writeb(falcbase + F_REG(RC1, ch),
972 cpc_readb(falcbase + F_REG(RC1, ch)) | 0x80);
973 }
974
975 falc_close_all_timeslots(card, ch);
976 }
977
978 void falc_init_e1(pc300_t * card, int ch)
979 {
980 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
981 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
982 falc_t *pfalc = (falc_t *) & chan->falc;
983 void __iomem *falcbase = card->hw.falcbase;
984 ucchar dja = (ch ? (LIM2_DJA2 | LIM2_DJA1) : 0);
985
986 /* Switch to E1 mode (PCM 30) */
987 cpc_writeb(falcbase + F_REG(FMR1, ch),
988 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_PMOD);
989
990 /* Clock mode */
991 if (conf->phys_settings.clock_type == CLOCK_INT) { /* Master mode */
992 cpc_writeb(falcbase + F_REG(LIM0, ch),
993 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_MAS);
994 } else { /* Slave mode */
995 cpc_writeb(falcbase + F_REG(LIM0, ch),
996 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_MAS);
997 }
998 cpc_writeb(falcbase + F_REG(LOOP, ch),
999 cpc_readb(falcbase + F_REG(LOOP, ch)) & ~LOOP_SFM);
1000
1001 cpc_writeb(falcbase + F_REG(IPC, ch), IPC_SCI);
1002 cpc_writeb(falcbase + F_REG(FMR0, ch),
1003 cpc_readb(falcbase + F_REG(FMR0, ch)) &
1004 ~(FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1));
1005
1006 switch (conf->lcode) {
1007 case PC300_LC_AMI:
1008 cpc_writeb(falcbase + F_REG(FMR0, ch),
1009 cpc_readb(falcbase + F_REG(FMR0, ch)) |
1010 FMR0_XC1 | FMR0_RC1);
1011 break;
1012
1013 case PC300_LC_HDB3:
1014 cpc_writeb(falcbase + F_REG(FMR0, ch),
1015 cpc_readb(falcbase + F_REG(FMR0, ch)) |
1016 FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1);
1017 break;
1018
1019 case PC300_LC_NRZ:
1020 break;
1021 }
1022
1023 cpc_writeb(falcbase + F_REG(LIM0, ch),
1024 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~(LIM0_SCL1 | LIM0_SCL0));
1025 /* Set interface mode to 2 MBPS */
1026 cpc_writeb(falcbase + F_REG(FMR1, ch),
1027 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_IMOD);
1028
1029 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x18);
1030 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x03);
1031 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x00);
1032
1033 switch (conf->fr_mode) {
1034 case PC300_FR_MF_CRC4:
1035 pfalc->multiframe_mode = 1;
1036 cpc_writeb(falcbase + F_REG(FMR1, ch),
1037 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_XFS);
1038 cpc_writeb(falcbase + F_REG(FMR2, ch),
1039 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_RFS1);
1040 cpc_writeb(falcbase + F_REG(FMR2, ch),
1041 cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_RFS0);
1042 cpc_writeb(falcbase + F_REG(FMR3, ch),
1043 cpc_readb(falcbase + F_REG(FMR3, ch)) & ~FMR3_EXTIW);
1044
1045 /* MultiFrame Resynchronization */
1046 cpc_writeb(falcbase + F_REG(FMR1, ch),
1047 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_MFCS);
1048
1049 /* Automatic Loss of Multiframe > 914 CRC errors */
1050 cpc_writeb(falcbase + F_REG(FMR2, ch),
1051 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_ALMF);
1052
1053 /* S1 and SI1/SI2 spare Bits set to 1 */
1054 cpc_writeb(falcbase + F_REG(XSP, ch),
1055 cpc_readb(falcbase + F_REG(XSP, ch)) & ~XSP_AXS);
1056 cpc_writeb(falcbase + F_REG(XSP, ch),
1057 cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_EBP);
1058 cpc_writeb(falcbase + F_REG(XSP, ch),
1059 cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_XS13 | XSP_XS15);
1060
1061 /* Automatic Force Resynchronization */
1062 cpc_writeb(falcbase + F_REG(FMR1, ch),
1063 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_AFR);
1064
1065 /* Transmit Automatic Remote Alarm */
1066 cpc_writeb(falcbase + F_REG(FMR2, ch),
1067 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_AXRA);
1068
1069 /* Transmit Spare Bits for National Use (Y, Sn, Sa) */
1070 cpc_writeb(falcbase + F_REG(XSW, ch),
1071 cpc_readb(falcbase + F_REG(XSW, ch)) |
1072 XSW_XY0 | XSW_XY1 | XSW_XY2 | XSW_XY3 | XSW_XY4);
1073 break;
1074
1075 case PC300_FR_MF_NON_CRC4:
1076 case PC300_FR_D4:
1077 pfalc->multiframe_mode = 0;
1078 cpc_writeb(falcbase + F_REG(FMR1, ch),
1079 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_XFS);
1080 cpc_writeb(falcbase + F_REG(FMR2, ch),
1081 cpc_readb(falcbase + F_REG(FMR2, ch)) &
1082 ~(FMR2_RFS1 | FMR2_RFS0));
1083 cpc_writeb(falcbase + F_REG(XSW, ch),
1084 cpc_readb(falcbase + F_REG(XSW, ch)) | XSW_XSIS);
1085 cpc_writeb(falcbase + F_REG(XSP, ch),
1086 cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_XSIF);
1087
1088 /* Automatic Force Resynchronization */
1089 cpc_writeb(falcbase + F_REG(FMR1, ch),
1090 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_AFR);
1091
1092 /* Transmit Automatic Remote Alarm */
1093 cpc_writeb(falcbase + F_REG(FMR2, ch),
1094 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_AXRA);
1095
1096 /* Transmit Spare Bits for National Use (Y, Sn, Sa) */
1097 cpc_writeb(falcbase + F_REG(XSW, ch),
1098 cpc_readb(falcbase + F_REG(XSW, ch)) |
1099 XSW_XY0 | XSW_XY1 | XSW_XY2 | XSW_XY3 | XSW_XY4);
1100 break;
1101
1102 case PC300_FR_UNFRAMED:
1103 pfalc->multiframe_mode = 0;
1104 cpc_writeb(falcbase + F_REG(FMR1, ch),
1105 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_XFS);
1106 cpc_writeb(falcbase + F_REG(FMR2, ch),
1107 cpc_readb(falcbase + F_REG(FMR2, ch)) &
1108 ~(FMR2_RFS1 | FMR2_RFS0));
1109 cpc_writeb(falcbase + F_REG(XSP, ch),
1110 cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_TT0);
1111 cpc_writeb(falcbase + F_REG(XSW, ch),
1112 cpc_readb(falcbase + F_REG(XSW, ch)) &
1113 ~(XSW_XTM|XSW_XY0|XSW_XY1|XSW_XY2|XSW_XY3|XSW_XY4));
1114 cpc_writeb(falcbase + F_REG(TSWM, ch), 0xff);
1115 cpc_writeb(falcbase + F_REG(FMR2, ch),
1116 cpc_readb(falcbase + F_REG(FMR2, ch)) |
1117 (FMR2_RTM | FMR2_DAIS));
1118 cpc_writeb(falcbase + F_REG(FMR2, ch),
1119 cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_AXRA);
1120 cpc_writeb(falcbase + F_REG(FMR1, ch),
1121 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_AFR);
1122 pfalc->sync = 1;
1123 cpc_writeb(falcbase + card->hw.cpld_reg2,
1124 cpc_readb(falcbase + card->hw.cpld_reg2) |
1125 (CPLD_REG2_FALC_LED2 << (2 * ch)));
1126 break;
1127 }
1128
1129 /* No signaling */
1130 cpc_writeb(falcbase + F_REG(XSP, ch),
1131 cpc_readb(falcbase + F_REG(XSP, ch)) & ~XSP_CASEN);
1132 cpc_writeb(falcbase + F_REG(CCR1, ch), 0);
1133
1134 cpc_writeb(falcbase + F_REG(LIM1, ch),
1135 cpc_readb(falcbase + F_REG(LIM1, ch)) | LIM1_RIL0 | LIM1_RIL1);
1136 cpc_writeb(falcbase + F_REG(LIM2, ch), (LIM2_LOS1 | dja));
1137
1138 /* Transmit Clock-Slot Offset */
1139 cpc_writeb(falcbase + F_REG(XC0, ch),
1140 cpc_readb(falcbase + F_REG(XC0, ch)) | 0x01);
1141 /* Transmit Time-slot Offset */
1142 cpc_writeb(falcbase + F_REG(XC1, ch), 0x3e);
1143 /* Receive Clock-Slot offset */
1144 cpc_writeb(falcbase + F_REG(RC0, ch), 0x05);
1145 /* Receive Time-slot offset */
1146 cpc_writeb(falcbase + F_REG(RC1, ch), 0x00);
1147
1148 /* LOS Detection after 176 consecutive 0s */
1149 cpc_writeb(falcbase + F_REG(PCDR, ch), 0x0a);
1150 /* LOS Recovery after 22 ones in the time window of PCD */
1151 cpc_writeb(falcbase + F_REG(PCRR, ch), 0x15);
1152
1153 cpc_writeb(falcbase + F_REG(IDLE, ch), 0x7f);
1154
1155 falc_close_all_timeslots(card, ch);
1156 }
1157
1158 void falc_init_hdlc(pc300_t * card, int ch)
1159 {
1160 void __iomem *falcbase = card->hw.falcbase;
1161 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1162 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1163
1164 /* Enable transparent data transfer */
1165 if (conf->fr_mode == PC300_FR_UNFRAMED) {
1166 cpc_writeb(falcbase + F_REG(MODE, ch), 0);
1167 } else {
1168 cpc_writeb(falcbase + F_REG(MODE, ch),
1169 cpc_readb(falcbase + F_REG(MODE, ch)) |
1170 (MODE_HRAC | MODE_MDS2));
1171 cpc_writeb(falcbase + F_REG(RAH2, ch), 0xff);
1172 cpc_writeb(falcbase + F_REG(RAH1, ch), 0xff);
1173 cpc_writeb(falcbase + F_REG(RAL2, ch), 0xff);
1174 cpc_writeb(falcbase + F_REG(RAL1, ch), 0xff);
1175 }
1176
1177 /* Tx/Rx reset */
1178 falc_issue_cmd(card, ch, CMDR_RRES | CMDR_XRES | CMDR_SRES);
1179
1180 /* Enable interrupt sources */
1181 falc_intr_enable(card, ch);
1182 }
1183
1184 void te_config(pc300_t * card, int ch)
1185 {
1186 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1187 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1188 falc_t *pfalc = (falc_t *) & chan->falc;
1189 void __iomem *falcbase = card->hw.falcbase;
1190 ucchar dummy;
1191 unsigned long flags;
1192
1193 memset(pfalc, 0, sizeof(falc_t));
1194 switch (conf->media) {
1195 case IF_IFACE_T1:
1196 pfalc->num_channels = NUM_OF_T1_CHANNELS;
1197 pfalc->offset = 1;
1198 break;
1199 case IF_IFACE_E1:
1200 pfalc->num_channels = NUM_OF_E1_CHANNELS;
1201 pfalc->offset = 0;
1202 break;
1203 }
1204 if (conf->tslot_bitmap == 0xffffffffUL)
1205 pfalc->full_bandwidth = 1;
1206 else
1207 pfalc->full_bandwidth = 0;
1208
1209 CPC_LOCK(card, flags);
1210 /* Reset the FALC chip */
1211 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
1212 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
1213 (CPLD_REG1_FALC_RESET << (2 * ch)));
1214 udelay(10000);
1215 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
1216 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) &
1217 ~(CPLD_REG1_FALC_RESET << (2 * ch)));
1218
1219 if (conf->media == IF_IFACE_T1) {
1220 falc_init_t1(card, ch);
1221 } else {
1222 falc_init_e1(card, ch);
1223 }
1224 falc_init_hdlc(card, ch);
1225 if (conf->rx_sens == PC300_RX_SENS_SH) {
1226 cpc_writeb(falcbase + F_REG(LIM0, ch),
1227 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_EQON);
1228 } else {
1229 cpc_writeb(falcbase + F_REG(LIM0, ch),
1230 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_EQON);
1231 }
1232 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
1233 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) |
1234 ((CPLD_REG2_FALC_TX_CLK | CPLD_REG2_FALC_RX_CLK) << (2 * ch)));
1235
1236 /* Clear all interrupt registers */
1237 dummy = cpc_readb(falcbase + F_REG(FISR0, ch)) +
1238 cpc_readb(falcbase + F_REG(FISR1, ch)) +
1239 cpc_readb(falcbase + F_REG(FISR2, ch)) +
1240 cpc_readb(falcbase + F_REG(FISR3, ch));
1241 CPC_UNLOCK(card, flags);
1242 }
1243
1244 void falc_check_status(pc300_t * card, int ch, unsigned char frs0)
1245 {
1246 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1247 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1248 falc_t *pfalc = (falc_t *) & chan->falc;
1249 void __iomem *falcbase = card->hw.falcbase;
1250
1251 /* Verify LOS */
1252 if (frs0 & FRS0_LOS) {
1253 if (!pfalc->red_alarm) {
1254 pfalc->red_alarm = 1;
1255 pfalc->los++;
1256 if (!pfalc->blue_alarm) {
1257 // EVENT_FALC_ABNORMAL
1258 if (conf->media == IF_IFACE_T1) {
1259 /* Disable this interrupt as it may otherwise interfere
1260 * with other working boards. */
1261 cpc_writeb(falcbase + F_REG(IMR0, ch),
1262 cpc_readb(falcbase + F_REG(IMR0, ch))
1263 | IMR0_PDEN);
1264 }
1265 falc_disable_comm(card, ch);
1266 // EVENT_FALC_ABNORMAL
1267 }
1268 }
1269 } else {
1270 if (pfalc->red_alarm) {
1271 pfalc->red_alarm = 0;
1272 pfalc->losr++;
1273 }
1274 }
1275
1276 if (conf->fr_mode != PC300_FR_UNFRAMED) {
1277 /* Verify AIS alarm */
1278 if (frs0 & FRS0_AIS) {
1279 if (!pfalc->blue_alarm) {
1280 pfalc->blue_alarm = 1;
1281 pfalc->ais++;
1282 // EVENT_AIS
1283 if (conf->media == IF_IFACE_T1) {
1284 /* Disable this interrupt as it may otherwise interfere with other working boards. */
1285 cpc_writeb(falcbase + F_REG(IMR0, ch),
1286 cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
1287 }
1288 falc_disable_comm(card, ch);
1289 // EVENT_AIS
1290 }
1291 } else {
1292 pfalc->blue_alarm = 0;
1293 }
1294
1295 /* Verify LFA */
1296 if (frs0 & FRS0_LFA) {
1297 if (!pfalc->loss_fa) {
1298 pfalc->loss_fa = 1;
1299 pfalc->lfa++;
1300 if (!pfalc->blue_alarm && !pfalc->red_alarm) {
1301 // EVENT_FALC_ABNORMAL
1302 if (conf->media == IF_IFACE_T1) {
1303 /* Disable this interrupt as it may otherwise
1304 * interfere with other working boards. */
1305 cpc_writeb(falcbase + F_REG(IMR0, ch),
1306 cpc_readb(falcbase + F_REG(IMR0, ch))
1307 | IMR0_PDEN);
1308 }
1309 falc_disable_comm(card, ch);
1310 // EVENT_FALC_ABNORMAL
1311 }
1312 }
1313 } else {
1314 if (pfalc->loss_fa) {
1315 pfalc->loss_fa = 0;
1316 pfalc->farec++;
1317 }
1318 }
1319
1320 /* Verify LMFA */
1321 if (pfalc->multiframe_mode && (frs0 & FRS0_LMFA)) {
1322 /* D4 or CRC4 frame mode */
1323 if (!pfalc->loss_mfa) {
1324 pfalc->loss_mfa = 1;
1325 pfalc->lmfa++;
1326 if (!pfalc->blue_alarm && !pfalc->red_alarm &&
1327 !pfalc->loss_fa) {
1328 // EVENT_FALC_ABNORMAL
1329 if (conf->media == IF_IFACE_T1) {
1330 /* Disable this interrupt as it may otherwise
1331 * interfere with other working boards. */
1332 cpc_writeb(falcbase + F_REG(IMR0, ch),
1333 cpc_readb(falcbase + F_REG(IMR0, ch))
1334 | IMR0_PDEN);
1335 }
1336 falc_disable_comm(card, ch);
1337 // EVENT_FALC_ABNORMAL
1338 }
1339 }
1340 } else {
1341 pfalc->loss_mfa = 0;
1342 }
1343
1344 /* Verify Remote Alarm */
1345 if (frs0 & FRS0_RRA) {
1346 if (!pfalc->yellow_alarm) {
1347 pfalc->yellow_alarm = 1;
1348 pfalc->rai++;
1349 if (pfalc->sync) {
1350 // EVENT_RAI
1351 falc_disable_comm(card, ch);
1352 // EVENT_RAI
1353 }
1354 }
1355 } else {
1356 pfalc->yellow_alarm = 0;
1357 }
1358 } /* if !PC300_UNFRAMED */
1359
1360 if (pfalc->red_alarm || pfalc->loss_fa ||
1361 pfalc->loss_mfa || pfalc->blue_alarm) {
1362 if (pfalc->sync) {
1363 pfalc->sync = 0;
1364 chan->d.line_off++;
1365 cpc_writeb(falcbase + card->hw.cpld_reg2,
1366 cpc_readb(falcbase + card->hw.cpld_reg2) &
1367 ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
1368 }
1369 } else {
1370 if (!pfalc->sync) {
1371 pfalc->sync = 1;
1372 chan->d.line_on++;
1373 cpc_writeb(falcbase + card->hw.cpld_reg2,
1374 cpc_readb(falcbase + card->hw.cpld_reg2) |
1375 (CPLD_REG2_FALC_LED2 << (2 * ch)));
1376 }
1377 }
1378
1379 if (pfalc->sync && !pfalc->yellow_alarm) {
1380 if (!pfalc->active) {
1381 // EVENT_FALC_NORMAL
1382 if (pfalc->loop_active) {
1383 return;
1384 }
1385 if (conf->media == IF_IFACE_T1) {
1386 cpc_writeb(falcbase + F_REG(IMR0, ch),
1387 cpc_readb(falcbase + F_REG(IMR0, ch)) & ~IMR0_PDEN);
1388 }
1389 falc_enable_comm(card, ch);
1390 // EVENT_FALC_NORMAL
1391 pfalc->active = 1;
1392 }
1393 } else {
1394 if (pfalc->active) {
1395 pfalc->active = 0;
1396 }
1397 }
1398 }
1399
1400 void falc_update_stats(pc300_t * card, int ch)
1401 {
1402 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1403 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1404 falc_t *pfalc = (falc_t *) & chan->falc;
1405 void __iomem *falcbase = card->hw.falcbase;
1406 ucshort counter;
1407
1408 counter = cpc_readb(falcbase + F_REG(FECL, ch));
1409 counter |= cpc_readb(falcbase + F_REG(FECH, ch)) << 8;
1410 pfalc->fec += counter;
1411
1412 counter = cpc_readb(falcbase + F_REG(CVCL, ch));
1413 counter |= cpc_readb(falcbase + F_REG(CVCH, ch)) << 8;
1414 pfalc->cvc += counter;
1415
1416 counter = cpc_readb(falcbase + F_REG(CECL, ch));
1417 counter |= cpc_readb(falcbase + F_REG(CECH, ch)) << 8;
1418 pfalc->cec += counter;
1419
1420 counter = cpc_readb(falcbase + F_REG(EBCL, ch));
1421 counter |= cpc_readb(falcbase + F_REG(EBCH, ch)) << 8;
1422 pfalc->ebc += counter;
1423
1424 if (cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_EPRM) {
1425 mdelay(10);
1426 counter = cpc_readb(falcbase + F_REG(BECL, ch));
1427 counter |= cpc_readb(falcbase + F_REG(BECH, ch)) << 8;
1428 pfalc->bec += counter;
1429
1430 if (((conf->media == IF_IFACE_T1) &&
1431 (cpc_readb(falcbase + F_REG(FRS1, ch)) & FRS1_LLBAD) &&
1432 (!(cpc_readb(falcbase + F_REG(FRS1, ch)) & FRS1_PDEN)))
1433 ||
1434 ((conf->media == IF_IFACE_E1) &&
1435 (cpc_readb(falcbase + F_REG(RSP, ch)) & RSP_LLBAD))) {
1436 pfalc->prbs = 2;
1437 } else {
1438 pfalc->prbs = 1;
1439 }
1440 }
1441 }
1442
1443 /*----------------------------------------------------------------------------
1444 * falc_remote_loop
1445 *----------------------------------------------------------------------------
1446 * Description: In the remote loopback mode the clock and data recovered
1447 * from the line inputs RL1/2 or RDIP/RDIN are routed back
1448 * to the line outputs XL1/2 or XDOP/XDON via the analog
1449 * transmitter. As in normal mode they are processsed by
1450 * the synchronizer and then sent to the system interface.
1451 *----------------------------------------------------------------------------
1452 */
1453 void falc_remote_loop(pc300_t * card, int ch, int loop_on)
1454 {
1455 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1456 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1457 falc_t *pfalc = (falc_t *) & chan->falc;
1458 void __iomem *falcbase = card->hw.falcbase;
1459
1460 if (loop_on) {
1461 // EVENT_FALC_ABNORMAL
1462 if (conf->media == IF_IFACE_T1) {
1463 /* Disable this interrupt as it may otherwise interfere with
1464 * other working boards. */
1465 cpc_writeb(falcbase + F_REG(IMR0, ch),
1466 cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
1467 }
1468 falc_disable_comm(card, ch);
1469 // EVENT_FALC_ABNORMAL
1470 cpc_writeb(falcbase + F_REG(LIM1, ch),
1471 cpc_readb(falcbase + F_REG(LIM1, ch)) | LIM1_RL);
1472 pfalc->loop_active = 1;
1473 } else {
1474 cpc_writeb(falcbase + F_REG(LIM1, ch),
1475 cpc_readb(falcbase + F_REG(LIM1, ch)) & ~LIM1_RL);
1476 pfalc->sync = 0;
1477 cpc_writeb(falcbase + card->hw.cpld_reg2,
1478 cpc_readb(falcbase + card->hw.cpld_reg2) &
1479 ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
1480 pfalc->active = 0;
1481 falc_issue_cmd(card, ch, CMDR_XRES);
1482 pfalc->loop_active = 0;
1483 }
1484 }
1485
1486 /*----------------------------------------------------------------------------
1487 * falc_local_loop
1488 *----------------------------------------------------------------------------
1489 * Description: The local loopback mode disconnects the receive lines
1490 * RL1/RL2 resp. RDIP/RDIN from the receiver. Instead of the
1491 * signals coming from the line the data provided by system
1492 * interface are routed through the analog receiver back to
1493 * the system interface. The unipolar bit stream will be
1494 * undisturbed transmitted on the line. Receiver and transmitter
1495 * coding must be identical.
1496 *----------------------------------------------------------------------------
1497 */
1498 void falc_local_loop(pc300_t * card, int ch, int loop_on)
1499 {
1500 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1501 falc_t *pfalc = (falc_t *) & chan->falc;
1502 void __iomem *falcbase = card->hw.falcbase;
1503
1504 if (loop_on) {
1505 cpc_writeb(falcbase + F_REG(LIM0, ch),
1506 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_LL);
1507 pfalc->loop_active = 1;
1508 } else {
1509 cpc_writeb(falcbase + F_REG(LIM0, ch),
1510 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_LL);
1511 pfalc->loop_active = 0;
1512 }
1513 }
1514
1515 /*----------------------------------------------------------------------------
1516 * falc_payload_loop
1517 *----------------------------------------------------------------------------
1518 * Description: This routine allows to enable/disable payload loopback.
1519 * When the payload loop is activated, the received 192 bits
1520 * of payload data will be looped back to the transmit
1521 * direction. The framing bits, CRC6 and DL bits are not
1522 * looped. They are originated by the FALC-LH transmitter.
1523 *----------------------------------------------------------------------------
1524 */
1525 void falc_payload_loop(pc300_t * card, int ch, int loop_on)
1526 {
1527 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1528 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1529 falc_t *pfalc = (falc_t *) & chan->falc;
1530 void __iomem *falcbase = card->hw.falcbase;
1531
1532 if (loop_on) {
1533 // EVENT_FALC_ABNORMAL
1534 if (conf->media == IF_IFACE_T1) {
1535 /* Disable this interrupt as it may otherwise interfere with
1536 * other working boards. */
1537 cpc_writeb(falcbase + F_REG(IMR0, ch),
1538 cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
1539 }
1540 falc_disable_comm(card, ch);
1541 // EVENT_FALC_ABNORMAL
1542 cpc_writeb(falcbase + F_REG(FMR2, ch),
1543 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_PLB);
1544 if (conf->media == IF_IFACE_T1) {
1545 cpc_writeb(falcbase + F_REG(FMR4, ch),
1546 cpc_readb(falcbase + F_REG(FMR4, ch)) | FMR4_TM);
1547 } else {
1548 cpc_writeb(falcbase + F_REG(FMR5, ch),
1549 cpc_readb(falcbase + F_REG(FMR5, ch)) | XSP_TT0);
1550 }
1551 falc_open_all_timeslots(card, ch);
1552 pfalc->loop_active = 2;
1553 } else {
1554 cpc_writeb(falcbase + F_REG(FMR2, ch),
1555 cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_PLB);
1556 if (conf->media == IF_IFACE_T1) {
1557 cpc_writeb(falcbase + F_REG(FMR4, ch),
1558 cpc_readb(falcbase + F_REG(FMR4, ch)) & ~FMR4_TM);
1559 } else {
1560 cpc_writeb(falcbase + F_REG(FMR5, ch),
1561 cpc_readb(falcbase + F_REG(FMR5, ch)) & ~XSP_TT0);
1562 }
1563 pfalc->sync = 0;
1564 cpc_writeb(falcbase + card->hw.cpld_reg2,
1565 cpc_readb(falcbase + card->hw.cpld_reg2) &
1566 ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
1567 pfalc->active = 0;
1568 falc_issue_cmd(card, ch, CMDR_XRES);
1569 pfalc->loop_active = 0;
1570 }
1571 }
1572
1573 /*----------------------------------------------------------------------------
1574 * turn_off_xlu
1575 *----------------------------------------------------------------------------
1576 * Description: Turns XLU bit off in the proper register
1577 *----------------------------------------------------------------------------
1578 */
1579 void turn_off_xlu(pc300_t * card, int ch)
1580 {
1581 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1582 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1583 void __iomem *falcbase = card->hw.falcbase;
1584
1585 if (conf->media == IF_IFACE_T1) {
1586 cpc_writeb(falcbase + F_REG(FMR5, ch),
1587 cpc_readb(falcbase + F_REG(FMR5, ch)) & ~FMR5_XLU);
1588 } else {
1589 cpc_writeb(falcbase + F_REG(FMR3, ch),
1590 cpc_readb(falcbase + F_REG(FMR3, ch)) & ~FMR3_XLU);
1591 }
1592 }
1593
1594 /*----------------------------------------------------------------------------
1595 * turn_off_xld
1596 *----------------------------------------------------------------------------
1597 * Description: Turns XLD bit off in the proper register
1598 *----------------------------------------------------------------------------
1599 */
1600 void turn_off_xld(pc300_t * card, int ch)
1601 {
1602 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1603 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1604 void __iomem *falcbase = card->hw.falcbase;
1605
1606 if (conf->media == IF_IFACE_T1) {
1607 cpc_writeb(falcbase + F_REG(FMR5, ch),
1608 cpc_readb(falcbase + F_REG(FMR5, ch)) & ~FMR5_XLD);
1609 } else {
1610 cpc_writeb(falcbase + F_REG(FMR3, ch),
1611 cpc_readb(falcbase + F_REG(FMR3, ch)) & ~FMR3_XLD);
1612 }
1613 }
1614
1615 /*----------------------------------------------------------------------------
1616 * falc_generate_loop_up_code
1617 *----------------------------------------------------------------------------
1618 * Description: This routine writes the proper FALC chip register in order
1619 * to generate a LOOP activation code over a T1/E1 line.
1620 *----------------------------------------------------------------------------
1621 */
1622 void falc_generate_loop_up_code(pc300_t * card, int ch)
1623 {
1624 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1625 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1626 falc_t *pfalc = (falc_t *) & chan->falc;
1627 void __iomem *falcbase = card->hw.falcbase;
1628
1629 if (conf->media == IF_IFACE_T1) {
1630 cpc_writeb(falcbase + F_REG(FMR5, ch),
1631 cpc_readb(falcbase + F_REG(FMR5, ch)) | FMR5_XLU);
1632 } else {
1633 cpc_writeb(falcbase + F_REG(FMR3, ch),
1634 cpc_readb(falcbase + F_REG(FMR3, ch)) | FMR3_XLU);
1635 }
1636 // EVENT_FALC_ABNORMAL
1637 if (conf->media == IF_IFACE_T1) {
1638 /* Disable this interrupt as it may otherwise interfere with
1639 * other working boards. */
1640 cpc_writeb(falcbase + F_REG(IMR0, ch),
1641 cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
1642 }
1643 falc_disable_comm(card, ch);
1644 // EVENT_FALC_ABNORMAL
1645 pfalc->loop_gen = 1;
1646 }
1647
1648 /*----------------------------------------------------------------------------
1649 * falc_generate_loop_down_code
1650 *----------------------------------------------------------------------------
1651 * Description: This routine writes the proper FALC chip register in order
1652 * to generate a LOOP deactivation code over a T1/E1 line.
1653 *----------------------------------------------------------------------------
1654 */
1655 void falc_generate_loop_down_code(pc300_t * card, int ch)
1656 {
1657 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1658 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1659 falc_t *pfalc = (falc_t *) & chan->falc;
1660 void __iomem *falcbase = card->hw.falcbase;
1661
1662 if (conf->media == IF_IFACE_T1) {
1663 cpc_writeb(falcbase + F_REG(FMR5, ch),
1664 cpc_readb(falcbase + F_REG(FMR5, ch)) | FMR5_XLD);
1665 } else {
1666 cpc_writeb(falcbase + F_REG(FMR3, ch),
1667 cpc_readb(falcbase + F_REG(FMR3, ch)) | FMR3_XLD);
1668 }
1669 pfalc->sync = 0;
1670 cpc_writeb(falcbase + card->hw.cpld_reg2,
1671 cpc_readb(falcbase + card->hw.cpld_reg2) &
1672 ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
1673 pfalc->active = 0;
1674 //? falc_issue_cmd(card, ch, CMDR_XRES);
1675 pfalc->loop_gen = 0;
1676 }
1677
1678 /*----------------------------------------------------------------------------
1679 * falc_pattern_test
1680 *----------------------------------------------------------------------------
1681 * Description: This routine generates a pattern code and checks
1682 * it on the reception side.
1683 *----------------------------------------------------------------------------
1684 */
1685 void falc_pattern_test(pc300_t * card, int ch, unsigned int activate)
1686 {
1687 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1688 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1689 falc_t *pfalc = (falc_t *) & chan->falc;
1690 void __iomem *falcbase = card->hw.falcbase;
1691
1692 if (activate) {
1693 pfalc->prbs = 1;
1694 pfalc->bec = 0;
1695 if (conf->media == IF_IFACE_T1) {
1696 /* Disable local loop activation/deactivation detect */
1697 cpc_writeb(falcbase + F_REG(IMR3, ch),
1698 cpc_readb(falcbase + F_REG(IMR3, ch)) | IMR3_LLBSC);
1699 } else {
1700 /* Disable local loop activation/deactivation detect */
1701 cpc_writeb(falcbase + F_REG(IMR1, ch),
1702 cpc_readb(falcbase + F_REG(IMR1, ch)) | IMR1_LLBSC);
1703 }
1704 /* Activates generation and monitoring of PRBS
1705 * (Pseudo Random Bit Sequence) */
1706 cpc_writeb(falcbase + F_REG(LCR1, ch),
1707 cpc_readb(falcbase + F_REG(LCR1, ch)) | LCR1_EPRM | LCR1_XPRBS);
1708 } else {
1709 pfalc->prbs = 0;
1710 /* Deactivates generation and monitoring of PRBS
1711 * (Pseudo Random Bit Sequence) */
1712 cpc_writeb(falcbase + F_REG(LCR1, ch),
1713 cpc_readb(falcbase+F_REG(LCR1,ch)) & ~(LCR1_EPRM | LCR1_XPRBS));
1714 if (conf->media == IF_IFACE_T1) {
1715 /* Enable local loop activation/deactivation detect */
1716 cpc_writeb(falcbase + F_REG(IMR3, ch),
1717 cpc_readb(falcbase + F_REG(IMR3, ch)) & ~IMR3_LLBSC);
1718 } else {
1719 /* Enable local loop activation/deactivation detect */
1720 cpc_writeb(falcbase + F_REG(IMR1, ch),
1721 cpc_readb(falcbase + F_REG(IMR1, ch)) & ~IMR1_LLBSC);
1722 }
1723 }
1724 }
1725
1726 /*----------------------------------------------------------------------------
1727 * falc_pattern_test_error
1728 *----------------------------------------------------------------------------
1729 * Description: This routine returns the bit error counter value
1730 *----------------------------------------------------------------------------
1731 */
1732 ucshort falc_pattern_test_error(pc300_t * card, int ch)
1733 {
1734 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1735 falc_t *pfalc = (falc_t *) & chan->falc;
1736
1737 return (pfalc->bec);
1738 }
1739
1740 /**********************************/
1741 /*** Net Interface Routines ***/
1742 /**********************************/
1743
1744 static void
1745 cpc_trace(struct net_device *dev, struct sk_buff *skb_main, char rx_tx)
1746 {
1747 struct sk_buff *skb;
1748
1749 if ((skb = dev_alloc_skb(10 + skb_main->len)) == NULL) {
1750 printk("%s: out of memory\n", dev->name);
1751 return;
1752 }
1753 skb_put(skb, 10 + skb_main->len);
1754
1755 skb->dev = dev;
1756 skb->protocol = htons(ETH_P_CUST);
1757 skb->mac.raw = skb->data;
1758 skb->pkt_type = PACKET_HOST;
1759 skb->len = 10 + skb_main->len;
1760
1761 memcpy(skb->data, dev->name, 5);
1762 skb->data[5] = '[';
1763 skb->data[6] = rx_tx;
1764 skb->data[7] = ']';
1765 skb->data[8] = ':';
1766 skb->data[9] = ' ';
1767 memcpy(&skb->data[10], skb_main->data, skb_main->len);
1768
1769 netif_rx(skb);
1770 }
1771
1772 void cpc_tx_timeout(struct net_device *dev)
1773 {
1774 pc300dev_t *d = (pc300dev_t *) dev->priv;
1775 pc300ch_t *chan = (pc300ch_t *) d->chan;
1776 pc300_t *card = (pc300_t *) chan->card;
1777 struct net_device_stats *stats = hdlc_stats(dev);
1778 int ch = chan->channel;
1779 unsigned long flags;
1780 ucchar ilar;
1781
1782 stats->tx_errors++;
1783 stats->tx_aborted_errors++;
1784 CPC_LOCK(card, flags);
1785 if ((ilar = cpc_readb(card->hw.scabase + ILAR)) != 0) {
1786 printk("%s: ILAR=0x%x\n", dev->name, ilar);
1787 cpc_writeb(card->hw.scabase + ILAR, ilar);
1788 cpc_writeb(card->hw.scabase + DMER, 0x80);
1789 }
1790 if (card->hw.type == PC300_TE) {
1791 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
1792 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
1793 ~(CPLD_REG2_FALC_LED1 << (2 * ch)));
1794 }
1795 dev->trans_start = jiffies;
1796 CPC_UNLOCK(card, flags);
1797 netif_wake_queue(dev);
1798 }
1799
1800 int cpc_queue_xmit(struct sk_buff *skb, struct net_device *dev)
1801 {
1802 pc300dev_t *d = (pc300dev_t *) dev->priv;
1803 pc300ch_t *chan = (pc300ch_t *) d->chan;
1804 pc300_t *card = (pc300_t *) chan->card;
1805 struct net_device_stats *stats = hdlc_stats(dev);
1806 int ch = chan->channel;
1807 unsigned long flags;
1808 #ifdef PC300_DEBUG_TX
1809 int i;
1810 #endif
1811
1812 if (chan->conf.monitor) {
1813 /* In monitor mode no Tx is done: ignore packet */
1814 dev_kfree_skb(skb);
1815 return 0;
1816 } else if (!netif_carrier_ok(dev)) {
1817 /* DCD must be OFF: drop packet */
1818 dev_kfree_skb(skb);
1819 stats->tx_errors++;
1820 stats->tx_carrier_errors++;
1821 return 0;
1822 } else if (cpc_readb(card->hw.scabase + M_REG(ST3, ch)) & ST3_DCD) {
1823 printk("%s: DCD is OFF. Going administrative down.\n", dev->name);
1824 stats->tx_errors++;
1825 stats->tx_carrier_errors++;
1826 dev_kfree_skb(skb);
1827 netif_carrier_off(dev);
1828 CPC_LOCK(card, flags);
1829 cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_TX_BUF_CLR);
1830 if (card->hw.type == PC300_TE) {
1831 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
1832 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
1833 ~(CPLD_REG2_FALC_LED1 << (2 * ch)));
1834 }
1835 CPC_UNLOCK(card, flags);
1836 netif_wake_queue(dev);
1837 return 0;
1838 }
1839
1840 /* Write buffer to DMA buffers */
1841 if (dma_buf_write(card, ch, (ucchar *) skb->data, skb->len) != 0) {
1842 // printk("%s: write error. Dropping TX packet.\n", dev->name);
1843 netif_stop_queue(dev);
1844 dev_kfree_skb(skb);
1845 stats->tx_errors++;
1846 stats->tx_dropped++;
1847 return 0;
1848 }
1849 #ifdef PC300_DEBUG_TX
1850 printk("%s T:", dev->name);
1851 for (i = 0; i < skb->len; i++)
1852 printk(" %02x", *(skb->data + i));
1853 printk("\n");
1854 #endif
1855
1856 if (d->trace_on) {
1857 cpc_trace(dev, skb, 'T');
1858 }
1859 dev->trans_start = jiffies;
1860
1861 /* Start transmission */
1862 CPC_LOCK(card, flags);
1863 /* verify if it has more than one free descriptor */
1864 if (card->chan[ch].nfree_tx_bd <= 1) {
1865 /* don't have so stop the queue */
1866 netif_stop_queue(dev);
1867 }
1868 cpc_writel(card->hw.scabase + DTX_REG(EDAL, ch),
1869 TX_BD_ADDR(ch, chan->tx_next_bd));
1870 cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_TX_ENA);
1871 cpc_writeb(card->hw.scabase + DSR_TX(ch), DSR_DE);
1872 if (card->hw.type == PC300_TE) {
1873 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
1874 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) |
1875 (CPLD_REG2_FALC_LED1 << (2 * ch)));
1876 }
1877 CPC_UNLOCK(card, flags);
1878 dev_kfree_skb(skb);
1879
1880 return 0;
1881 }
1882
1883 void cpc_net_rx(struct net_device *dev)
1884 {
1885 pc300dev_t *d = (pc300dev_t *) dev->priv;
1886 pc300ch_t *chan = (pc300ch_t *) d->chan;
1887 pc300_t *card = (pc300_t *) chan->card;
1888 struct net_device_stats *stats = hdlc_stats(dev);
1889 int ch = chan->channel;
1890 #ifdef PC300_DEBUG_RX
1891 int i;
1892 #endif
1893 int rxb;
1894 struct sk_buff *skb;
1895
1896 while (1) {
1897 if ((rxb = dma_get_rx_frame_size(card, ch)) == -1)
1898 return;
1899
1900 if (!netif_carrier_ok(dev)) {
1901 /* DCD must be OFF: drop packet */
1902 printk("%s : DCD is OFF - drop %d rx bytes\n", dev->name, rxb);
1903 skb = NULL;
1904 } else {
1905 if (rxb > (dev->mtu + 40)) { /* add headers */
1906 printk("%s : MTU exceeded %d\n", dev->name, rxb);
1907 skb = NULL;
1908 } else {
1909 skb = dev_alloc_skb(rxb);
1910 if (skb == NULL) {
1911 printk("%s: Memory squeeze!!\n", dev->name);
1912 return;
1913 }
1914 skb->dev = dev;
1915 }
1916 }
1917
1918 if (((rxb = dma_buf_read(card, ch, skb)) <= 0) || (skb == NULL)) {
1919 #ifdef PC300_DEBUG_RX
1920 printk("%s: rxb = %x\n", dev->name, rxb);
1921 #endif
1922 if ((skb == NULL) && (rxb > 0)) {
1923 /* rxb > dev->mtu */
1924 stats->rx_errors++;
1925 stats->rx_length_errors++;
1926 continue;
1927 }
1928
1929 if (rxb < 0) { /* Invalid frame */
1930 rxb = -rxb;
1931 if (rxb & DST_OVR) {
1932 stats->rx_errors++;
1933 stats->rx_fifo_errors++;
1934 }
1935 if (rxb & DST_CRC) {
1936 stats->rx_errors++;
1937 stats->rx_crc_errors++;
1938 }
1939 if (rxb & (DST_RBIT | DST_SHRT | DST_ABT)) {
1940 stats->rx_errors++;
1941 stats->rx_frame_errors++;
1942 }
1943 }
1944 if (skb) {
1945 dev_kfree_skb_irq(skb);
1946 }
1947 continue;
1948 }
1949
1950 stats->rx_bytes += rxb;
1951
1952 #ifdef PC300_DEBUG_RX
1953 printk("%s R:", dev->name);
1954 for (i = 0; i < skb->len; i++)
1955 printk(" %02x", *(skb->data + i));
1956 printk("\n");
1957 #endif
1958 if (d->trace_on) {
1959 cpc_trace(dev, skb, 'R');
1960 }
1961 stats->rx_packets++;
1962 skb->protocol = hdlc_type_trans(skb, dev);
1963 netif_rx(skb);
1964 }
1965 }
1966
1967 /************************************/
1968 /*** PC300 Interrupt Routines ***/
1969 /************************************/
1970 static void sca_tx_intr(pc300dev_t *dev)
1971 {
1972 pc300ch_t *chan = (pc300ch_t *)dev->chan;
1973 pc300_t *card = (pc300_t *)chan->card;
1974 int ch = chan->channel;
1975 volatile pcsca_bd_t __iomem * ptdescr;
1976 struct net_device_stats *stats = hdlc_stats(dev->dev);
1977
1978 /* Clean up descriptors from previous transmission */
1979 ptdescr = (card->hw.rambase +
1980 TX_BD_ADDR(ch,chan->tx_first_bd));
1981 while ((cpc_readl(card->hw.scabase + DTX_REG(CDAL,ch)) !=
1982 TX_BD_ADDR(ch,chan->tx_first_bd)) &&
1983 (cpc_readb(&ptdescr->status) & DST_OSB)) {
1984 stats->tx_packets++;
1985 stats->tx_bytes += cpc_readw(&ptdescr->len);
1986 cpc_writeb(&ptdescr->status, DST_OSB);
1987 cpc_writew(&ptdescr->len, 0);
1988 chan->nfree_tx_bd++;
1989 chan->tx_first_bd = (chan->tx_first_bd + 1) & (N_DMA_TX_BUF - 1);
1990 ptdescr = (card->hw.rambase + TX_BD_ADDR(ch,chan->tx_first_bd));
1991 }
1992
1993 #ifdef CONFIG_PC300_MLPPP
1994 if (chan->conf.proto == PC300_PROTO_MLPPP) {
1995 cpc_tty_trigger_poll(dev);
1996 } else {
1997 #endif
1998 /* Tell the upper layer we are ready to transmit more packets */
1999 netif_wake_queue(dev->dev);
2000 #ifdef CONFIG_PC300_MLPPP
2001 }
2002 #endif
2003 }
2004
2005 static void sca_intr(pc300_t * card)
2006 {
2007 void __iomem *scabase = card->hw.scabase;
2008 volatile uclong status;
2009 int ch;
2010 int intr_count = 0;
2011 unsigned char dsr_rx;
2012
2013 while ((status = cpc_readl(scabase + ISR0)) != 0) {
2014 for (ch = 0; ch < card->hw.nchan; ch++) {
2015 pc300ch_t *chan = &card->chan[ch];
2016 pc300dev_t *d = &chan->d;
2017 struct net_device *dev = d->dev;
2018 hdlc_device *hdlc = dev_to_hdlc(dev);
2019
2020 spin_lock(&card->card_lock);
2021
2022 /**** Reception ****/
2023 if (status & IR0_DRX((IR0_DMIA | IR0_DMIB), ch)) {
2024 ucchar drx_stat = cpc_readb(scabase + DSR_RX(ch));
2025
2026 /* Clear RX interrupts */
2027 cpc_writeb(scabase + DSR_RX(ch), drx_stat | DSR_DWE);
2028
2029 #ifdef PC300_DEBUG_INTR
2030 printk ("sca_intr: RX intr chan[%d] (st=0x%08lx, dsr=0x%02x)\n",
2031 ch, status, drx_stat);
2032 #endif
2033 if (status & IR0_DRX(IR0_DMIA, ch)) {
2034 if (drx_stat & DSR_BOF) {
2035 #ifdef CONFIG_PC300_MLPPP
2036 if (chan->conf.proto == PC300_PROTO_MLPPP) {
2037 /* verify if driver is TTY */
2038 if ((cpc_readb(scabase + DSR_RX(ch)) & DSR_DE)) {
2039 rx_dma_stop(card, ch);
2040 }
2041 cpc_tty_receive(d);
2042 rx_dma_start(card, ch);
2043 } else
2044 #endif
2045 {
2046 if ((cpc_readb(scabase + DSR_RX(ch)) & DSR_DE)) {
2047 rx_dma_stop(card, ch);
2048 }
2049 cpc_net_rx(dev);
2050 /* Discard invalid frames */
2051 hdlc->stats.rx_errors++;
2052 hdlc->stats.rx_over_errors++;
2053 chan->rx_first_bd = 0;
2054 chan->rx_last_bd = N_DMA_RX_BUF - 1;
2055 rx_dma_start(card, ch);
2056 }
2057 }
2058 }
2059 if (status & IR0_DRX(IR0_DMIB, ch)) {
2060 if (drx_stat & DSR_EOM) {
2061 if (card->hw.type == PC300_TE) {
2062 cpc_writeb(card->hw.falcbase +
2063 card->hw.cpld_reg2,
2064 cpc_readb (card->hw.falcbase +
2065 card->hw.cpld_reg2) |
2066 (CPLD_REG2_FALC_LED1 << (2 * ch)));
2067 }
2068 #ifdef CONFIG_PC300_MLPPP
2069 if (chan->conf.proto == PC300_PROTO_MLPPP) {
2070 /* verify if driver is TTY */
2071 cpc_tty_receive(d);
2072 } else {
2073 cpc_net_rx(dev);
2074 }
2075 #else
2076 cpc_net_rx(dev);
2077 #endif
2078 if (card->hw.type == PC300_TE) {
2079 cpc_writeb(card->hw.falcbase +
2080 card->hw.cpld_reg2,
2081 cpc_readb (card->hw.falcbase +
2082 card->hw.cpld_reg2) &
2083 ~ (CPLD_REG2_FALC_LED1 << (2 * ch)));
2084 }
2085 }
2086 }
2087 if (!(dsr_rx = cpc_readb(scabase + DSR_RX(ch)) & DSR_DE)) {
2088 #ifdef PC300_DEBUG_INTR
2089 printk("%s: RX intr chan[%d] (st=0x%08lx, dsr=0x%02x, dsr2=0x%02x)\n",
2090 dev->name, ch, status, drx_stat, dsr_rx);
2091 #endif
2092 cpc_writeb(scabase + DSR_RX(ch), (dsr_rx | DSR_DE) & 0xfe);
2093 }
2094 }
2095
2096 /**** Transmission ****/
2097 if (status & IR0_DTX((IR0_EFT | IR0_DMIA | IR0_DMIB), ch)) {
2098 ucchar dtx_stat = cpc_readb(scabase + DSR_TX(ch));
2099
2100 /* Clear TX interrupts */
2101 cpc_writeb(scabase + DSR_TX(ch), dtx_stat | DSR_DWE);
2102
2103 #ifdef PC300_DEBUG_INTR
2104 printk ("sca_intr: TX intr chan[%d] (st=0x%08lx, dsr=0x%02x)\n",
2105 ch, status, dtx_stat);
2106 #endif
2107 if (status & IR0_DTX(IR0_EFT, ch)) {
2108 if (dtx_stat & DSR_UDRF) {
2109 if (cpc_readb (scabase + M_REG(TBN, ch)) != 0) {
2110 cpc_writeb(scabase + M_REG(CMD,ch), CMD_TX_BUF_CLR);
2111 }
2112 if (card->hw.type == PC300_TE) {
2113 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
2114 cpc_readb (card->hw.falcbase +
2115 card->hw.cpld_reg2) &
2116 ~ (CPLD_REG2_FALC_LED1 << (2 * ch)));
2117 }
2118 hdlc->stats.tx_errors++;
2119 hdlc->stats.tx_fifo_errors++;
2120 sca_tx_intr(d);
2121 }
2122 }
2123 if (status & IR0_DTX(IR0_DMIA, ch)) {
2124 if (dtx_stat & DSR_BOF) {
2125 }
2126 }
2127 if (status & IR0_DTX(IR0_DMIB, ch)) {
2128 if (dtx_stat & DSR_EOM) {
2129 if (card->hw.type == PC300_TE) {
2130 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
2131 cpc_readb (card->hw.falcbase +
2132 card->hw.cpld_reg2) &
2133 ~ (CPLD_REG2_FALC_LED1 << (2 * ch)));
2134 }
2135 sca_tx_intr(d);
2136 }
2137 }
2138 }
2139
2140 /**** MSCI ****/
2141 if (status & IR0_M(IR0_RXINTA, ch)) {
2142 ucchar st1 = cpc_readb(scabase + M_REG(ST1, ch));
2143
2144 /* Clear MSCI interrupts */
2145 cpc_writeb(scabase + M_REG(ST1, ch), st1);
2146
2147 #ifdef PC300_DEBUG_INTR
2148 printk("sca_intr: MSCI intr chan[%d] (st=0x%08lx, st1=0x%02x)\n",
2149 ch, status, st1);
2150 #endif
2151 if (st1 & ST1_CDCD) { /* DCD changed */
2152 if (cpc_readb(scabase + M_REG(ST3, ch)) & ST3_DCD) {
2153 printk ("%s: DCD is OFF. Going administrative down.\n",
2154 dev->name);
2155 #ifdef CONFIG_PC300_MLPPP
2156 if (chan->conf.proto != PC300_PROTO_MLPPP) {
2157 netif_carrier_off(dev);
2158 }
2159 #else
2160 netif_carrier_off(dev);
2161
2162 #endif
2163 card->chan[ch].d.line_off++;
2164 } else { /* DCD = 1 */
2165 printk ("%s: DCD is ON. Going administrative up.\n",
2166 dev->name);
2167 #ifdef CONFIG_PC300_MLPPP
2168 if (chan->conf.proto != PC300_PROTO_MLPPP)
2169 /* verify if driver is not TTY */
2170 #endif
2171 netif_carrier_on(dev);
2172 card->chan[ch].d.line_on++;
2173 }
2174 }
2175 }
2176 spin_unlock(&card->card_lock);
2177 }
2178 if (++intr_count == 10)
2179 /* Too much work at this board. Force exit */
2180 break;
2181 }
2182 }
2183
2184 static void falc_t1_loop_detection(pc300_t * card, int ch, ucchar frs1)
2185 {
2186 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
2187 falc_t *pfalc = (falc_t *) & chan->falc;
2188 void __iomem *falcbase = card->hw.falcbase;
2189
2190 if (((cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_XPRBS) == 0) &&
2191 !pfalc->loop_gen) {
2192 if (frs1 & FRS1_LLBDD) {
2193 // A Line Loop Back Deactivation signal detected
2194 if (pfalc->loop_active) {
2195 falc_remote_loop(card, ch, 0);
2196 }
2197 } else {
2198 if ((frs1 & FRS1_LLBAD) &&
2199 ((cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_EPRM) == 0)) {
2200 // A Line Loop Back Activation signal detected
2201 if (!pfalc->loop_active) {
2202 falc_remote_loop(card, ch, 1);
2203 }
2204 }
2205 }
2206 }
2207 }
2208
2209 static void falc_e1_loop_detection(pc300_t * card, int ch, ucchar rsp)
2210 {
2211 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
2212 falc_t *pfalc = (falc_t *) & chan->falc;
2213 void __iomem *falcbase = card->hw.falcbase;
2214
2215 if (((cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_XPRBS) == 0) &&
2216 !pfalc->loop_gen) {
2217 if (rsp & RSP_LLBDD) {
2218 // A Line Loop Back Deactivation signal detected
2219 if (pfalc->loop_active) {
2220 falc_remote_loop(card, ch, 0);
2221 }
2222 } else {
2223 if ((rsp & RSP_LLBAD) &&
2224 ((cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_EPRM) == 0)) {
2225 // A Line Loop Back Activation signal detected
2226 if (!pfalc->loop_active) {
2227 falc_remote_loop(card, ch, 1);
2228 }
2229 }
2230 }
2231 }
2232 }
2233
2234 static void falc_t1_intr(pc300_t * card, int ch)
2235 {
2236 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
2237 falc_t *pfalc = (falc_t *) & chan->falc;
2238 void __iomem *falcbase = card->hw.falcbase;
2239 ucchar isr0, isr3, gis;
2240 ucchar dummy;
2241
2242 while ((gis = cpc_readb(falcbase + F_REG(GIS, ch))) != 0) {
2243 if (gis & GIS_ISR0) {
2244 isr0 = cpc_readb(falcbase + F_REG(FISR0, ch));
2245 if (isr0 & FISR0_PDEN) {
2246 /* Read the bit to clear the situation */
2247 if (cpc_readb(falcbase + F_REG(FRS1, ch)) &
2248 FRS1_PDEN) {
2249 pfalc->pden++;
2250 }
2251 }
2252 }
2253
2254 if (gis & GIS_ISR1) {
2255 dummy = cpc_readb(falcbase + F_REG(FISR1, ch));
2256 }
2257
2258 if (gis & GIS_ISR2) {
2259 dummy = cpc_readb(falcbase + F_REG(FISR2, ch));
2260 }
2261
2262 if (gis & GIS_ISR3) {
2263 isr3 = cpc_readb(falcbase + F_REG(FISR3, ch));
2264 if (isr3 & FISR3_SEC) {
2265 pfalc->sec++;
2266 falc_update_stats(card, ch);
2267 falc_check_status(card, ch,
2268 cpc_readb(falcbase + F_REG(FRS0, ch)));
2269 }
2270 if (isr3 & FISR3_ES) {
2271 pfalc->es++;
2272 }
2273 if (isr3 & FISR3_LLBSC) {
2274 falc_t1_loop_detection(card, ch,
2275 cpc_readb(falcbase + F_REG(FRS1, ch)));
2276 }
2277 }
2278 }
2279 }
2280
2281 static void falc_e1_intr(pc300_t * card, int ch)
2282 {
2283 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
2284 falc_t *pfalc = (falc_t *) & chan->falc;
2285 void __iomem *falcbase = card->hw.falcbase;
2286 ucchar isr1, isr2, isr3, gis, rsp;
2287 ucchar dummy;
2288
2289 while ((gis = cpc_readb(falcbase + F_REG(GIS, ch))) != 0) {
2290 rsp = cpc_readb(falcbase + F_REG(RSP, ch));
2291
2292 if (gis & GIS_ISR0) {
2293 dummy = cpc_readb(falcbase + F_REG(FISR0, ch));
2294 }
2295 if (gis & GIS_ISR1) {
2296 isr1 = cpc_readb(falcbase + F_REG(FISR1, ch));
2297 if (isr1 & FISR1_XMB) {
2298 if ((pfalc->xmb_cause & 2)
2299 && pfalc->multiframe_mode) {
2300 if (cpc_readb (falcbase + F_REG(FRS0, ch)) &
2301 (FRS0_LOS | FRS0_AIS | FRS0_LFA)) {
2302 cpc_writeb(falcbase + F_REG(XSP, ch),
2303 cpc_readb(falcbase + F_REG(XSP, ch))
2304 & ~XSP_AXS);
2305 } else {
2306 cpc_writeb(falcbase + F_REG(XSP, ch),
2307 cpc_readb(falcbase + F_REG(XSP, ch))
2308 | XSP_AXS);
2309 }
2310 }
2311 pfalc->xmb_cause = 0;
2312 cpc_writeb(falcbase + F_REG(IMR1, ch),
2313 cpc_readb(falcbase + F_REG(IMR1, ch)) | IMR1_XMB);
2314 }
2315 if (isr1 & FISR1_LLBSC) {
2316 falc_e1_loop_detection(card, ch, rsp);
2317 }
2318 }
2319 if (gis & GIS_ISR2) {
2320 isr2 = cpc_readb(falcbase + F_REG(FISR2, ch));
2321 if (isr2 & FISR2_T400MS) {
2322 cpc_writeb(falcbase + F_REG(XSW, ch),
2323 cpc_readb(falcbase + F_REG(XSW, ch)) | XSW_XRA);
2324 }
2325 if (isr2 & FISR2_MFAR) {
2326 cpc_writeb(falcbase + F_REG(XSW, ch),
2327 cpc_readb(falcbase + F_REG(XSW, ch)) & ~XSW_XRA);
2328 }
2329 if (isr2 & (FISR2_FAR | FISR2_LFA | FISR2_AIS | FISR2_LOS)) {
2330 pfalc->xmb_cause |= 2;
2331 cpc_writeb(falcbase + F_REG(IMR1, ch),
2332 cpc_readb(falcbase + F_REG(IMR1, ch)) & ~IMR1_XMB);
2333 }
2334 }
2335 if (gis & GIS_ISR3) {
2336 isr3 = cpc_readb(falcbase + F_REG(FISR3, ch));
2337 if (isr3 & FISR3_SEC) {
2338 pfalc->sec++;
2339 falc_update_stats(card, ch);
2340 falc_check_status(card, ch,
2341 cpc_readb(falcbase + F_REG(FRS0, ch)));
2342 }
2343 if (isr3 & FISR3_ES) {
2344 pfalc->es++;
2345 }
2346 }
2347 }
2348 }
2349
2350 static void falc_intr(pc300_t * card)
2351 {
2352 int ch;
2353
2354 for (ch = 0; ch < card->hw.nchan; ch++) {
2355 pc300ch_t *chan = &card->chan[ch];
2356 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
2357
2358 if (conf->media == IF_IFACE_T1) {
2359 falc_t1_intr(card, ch);
2360 } else {
2361 falc_e1_intr(card, ch);
2362 }
2363 }
2364 }
2365
2366 static irqreturn_t cpc_intr(int irq, void *dev_id, struct pt_regs *regs)
2367 {
2368 pc300_t *card;
2369 volatile ucchar plx_status;
2370
2371 if ((card = (pc300_t *) dev_id) == 0) {
2372 #ifdef PC300_DEBUG_INTR
2373 printk("cpc_intr: spurious intr %d\n", irq);
2374 #endif
2375 return IRQ_NONE; /* spurious intr */
2376 }
2377
2378 if (card->hw.rambase == 0) {
2379 #ifdef PC300_DEBUG_INTR
2380 printk("cpc_intr: spurious intr2 %d\n", irq);
2381 #endif
2382 return IRQ_NONE; /* spurious intr */
2383 }
2384
2385 switch (card->hw.type) {
2386 case PC300_RSV:
2387 case PC300_X21:
2388 sca_intr(card);
2389 break;
2390
2391 case PC300_TE:
2392 while ( (plx_status = (cpc_readb(card->hw.plxbase + card->hw.intctl_reg) &
2393 (PLX_9050_LINT1_STATUS | PLX_9050_LINT2_STATUS))) != 0) {
2394 if (plx_status & PLX_9050_LINT1_STATUS) { /* SCA Interrupt */
2395 sca_intr(card);
2396 }
2397 if (plx_status & PLX_9050_LINT2_STATUS) { /* FALC Interrupt */
2398 falc_intr(card);
2399 }
2400 }
2401 break;
2402 }
2403 return IRQ_HANDLED;
2404 }
2405
2406 void cpc_sca_status(pc300_t * card, int ch)
2407 {
2408 ucchar ilar;
2409 void __iomem *scabase = card->hw.scabase;
2410 unsigned long flags;
2411
2412 tx_dma_buf_check(card, ch);
2413 rx_dma_buf_check(card, ch);
2414 ilar = cpc_readb(scabase + ILAR);
2415 printk ("ILAR=0x%02x, WCRL=0x%02x, PCR=0x%02x, BTCR=0x%02x, BOLR=0x%02x\n",
2416 ilar, cpc_readb(scabase + WCRL), cpc_readb(scabase + PCR),
2417 cpc_readb(scabase + BTCR), cpc_readb(scabase + BOLR));
2418 printk("TX_CDA=0x%08x, TX_EDA=0x%08x\n",
2419 cpc_readl(scabase + DTX_REG(CDAL, ch)),
2420 cpc_readl(scabase + DTX_REG(EDAL, ch)));
2421 printk("RX_CDA=0x%08x, RX_EDA=0x%08x, BFL=0x%04x\n",
2422 cpc_readl(scabase + DRX_REG(CDAL, ch)),
2423 cpc_readl(scabase + DRX_REG(EDAL, ch)),
2424 cpc_readw(scabase + DRX_REG(BFLL, ch)));
2425 printk("DMER=0x%02x, DSR_TX=0x%02x, DSR_RX=0x%02x\n",
2426 cpc_readb(scabase + DMER), cpc_readb(scabase + DSR_TX(ch)),
2427 cpc_readb(scabase + DSR_RX(ch)));
2428 printk("DMR_TX=0x%02x, DMR_RX=0x%02x, DIR_TX=0x%02x, DIR_RX=0x%02x\n",
2429 cpc_readb(scabase + DMR_TX(ch)), cpc_readb(scabase + DMR_RX(ch)),
2430 cpc_readb(scabase + DIR_TX(ch)),
2431 cpc_readb(scabase + DIR_RX(ch)));
2432 printk("DCR_TX=0x%02x, DCR_RX=0x%02x, FCT_TX=0x%02x, FCT_RX=0x%02x\n",
2433 cpc_readb(scabase + DCR_TX(ch)), cpc_readb(scabase + DCR_RX(ch)),
2434 cpc_readb(scabase + FCT_TX(ch)),
2435 cpc_readb(scabase + FCT_RX(ch)));
2436 printk("MD0=0x%02x, MD1=0x%02x, MD2=0x%02x, MD3=0x%02x, IDL=0x%02x\n",
2437 cpc_readb(scabase + M_REG(MD0, ch)),
2438 cpc_readb(scabase + M_REG(MD1, ch)),
2439 cpc_readb(scabase + M_REG(MD2, ch)),
2440 cpc_readb(scabase + M_REG(MD3, ch)),
2441 cpc_readb(scabase + M_REG(IDL, ch)));
2442 printk("CMD=0x%02x, SA0=0x%02x, SA1=0x%02x, TFN=0x%02x, CTL=0x%02x\n",
2443 cpc_readb(scabase + M_REG(CMD, ch)),
2444 cpc_readb(scabase + M_REG(SA0, ch)),
2445 cpc_readb(scabase + M_REG(SA1, ch)),
2446 cpc_readb(scabase + M_REG(TFN, ch)),
2447 cpc_readb(scabase + M_REG(CTL, ch)));
2448 printk("ST0=0x%02x, ST1=0x%02x, ST2=0x%02x, ST3=0x%02x, ST4=0x%02x\n",
2449 cpc_readb(scabase + M_REG(ST0, ch)),
2450 cpc_readb(scabase + M_REG(ST1, ch)),
2451 cpc_readb(scabase + M_REG(ST2, ch)),
2452 cpc_readb(scabase + M_REG(ST3, ch)),
2453 cpc_readb(scabase + M_REG(ST4, ch)));
2454 printk ("CST0=0x%02x, CST1=0x%02x, CST2=0x%02x, CST3=0x%02x, FST=0x%02x\n",
2455 cpc_readb(scabase + M_REG(CST0, ch)),
2456 cpc_readb(scabase + M_REG(CST1, ch)),
2457 cpc_readb(scabase + M_REG(CST2, ch)),
2458 cpc_readb(scabase + M_REG(CST3, ch)),
2459 cpc_readb(scabase + M_REG(FST, ch)));
2460 printk("TRC0=0x%02x, TRC1=0x%02x, RRC=0x%02x, TBN=0x%02x, RBN=0x%02x\n",
2461 cpc_readb(scabase + M_REG(TRC0, ch)),
2462 cpc_readb(scabase + M_REG(TRC1, ch)),
2463 cpc_readb(scabase + M_REG(RRC, ch)),
2464 cpc_readb(scabase + M_REG(TBN, ch)),
2465 cpc_readb(scabase + M_REG(RBN, ch)));
2466 printk("TFS=0x%02x, TNR0=0x%02x, TNR1=0x%02x, RNR=0x%02x\n",
2467 cpc_readb(scabase + M_REG(TFS, ch)),
2468 cpc_readb(scabase + M_REG(TNR0, ch)),
2469 cpc_readb(scabase + M_REG(TNR1, ch)),
2470 cpc_readb(scabase + M_REG(RNR, ch)));
2471 printk("TCR=0x%02x, RCR=0x%02x, TNR1=0x%02x, RNR=0x%02x\n",
2472 cpc_readb(scabase + M_REG(TCR, ch)),
2473 cpc_readb(scabase + M_REG(RCR, ch)),
2474 cpc_readb(scabase + M_REG(TNR1, ch)),
2475 cpc_readb(scabase + M_REG(RNR, ch)));
2476 printk("TXS=0x%02x, RXS=0x%02x, EXS=0x%02x, TMCT=0x%02x, TMCR=0x%02x\n",
2477 cpc_readb(scabase + M_REG(TXS, ch)),
2478 cpc_readb(scabase + M_REG(RXS, ch)),
2479 cpc_readb(scabase + M_REG(EXS, ch)),
2480 cpc_readb(scabase + M_REG(TMCT, ch)),
2481 cpc_readb(scabase + M_REG(TMCR, ch)));
2482 printk("IE0=0x%02x, IE1=0x%02x, IE2=0x%02x, IE4=0x%02x, FIE=0x%02x\n",
2483 cpc_readb(scabase + M_REG(IE0, ch)),
2484 cpc_readb(scabase + M_REG(IE1, ch)),
2485 cpc_readb(scabase + M_REG(IE2, ch)),
2486 cpc_readb(scabase + M_REG(IE4, ch)),
2487 cpc_readb(scabase + M_REG(FIE, ch)));
2488 printk("IER0=0x%08x\n", cpc_readl(scabase + IER0));
2489
2490 if (ilar != 0) {
2491 CPC_LOCK(card, flags);
2492 cpc_writeb(scabase + ILAR, ilar);
2493 cpc_writeb(scabase + DMER, 0x80);
2494 CPC_UNLOCK(card, flags);
2495 }
2496 }
2497
2498 void cpc_falc_status(pc300_t * card, int ch)
2499 {
2500 pc300ch_t *chan = &card->chan[ch];
2501 falc_t *pfalc = (falc_t *) & chan->falc;
2502 unsigned long flags;
2503
2504 CPC_LOCK(card, flags);
2505 printk("CH%d: %s %s %d channels\n",
2506 ch, (pfalc->sync ? "SYNC" : ""), (pfalc->active ? "ACTIVE" : ""),
2507 pfalc->num_channels);
2508
2509 printk(" pden=%d, los=%d, losr=%d, lfa=%d, farec=%d\n",
2510 pfalc->pden, pfalc->los, pfalc->losr, pfalc->lfa, pfalc->farec);
2511 printk(" lmfa=%d, ais=%d, sec=%d, es=%d, rai=%d\n",
2512 pfalc->lmfa, pfalc->ais, pfalc->sec, pfalc->es, pfalc->rai);
2513 printk(" bec=%d, fec=%d, cvc=%d, cec=%d, ebc=%d\n",
2514 pfalc->bec, pfalc->fec, pfalc->cvc, pfalc->cec, pfalc->ebc);
2515
2516 printk("\n");
2517 printk(" STATUS: %s %s %s %s %s %s\n",
2518 (pfalc->red_alarm ? "RED" : ""),
2519 (pfalc->blue_alarm ? "BLU" : ""),
2520 (pfalc->yellow_alarm ? "YEL" : ""),
2521 (pfalc->loss_fa ? "LFA" : ""),
2522 (pfalc->loss_mfa ? "LMF" : ""), (pfalc->prbs ? "PRB" : ""));
2523 CPC_UNLOCK(card, flags);
2524 }
2525
2526 int cpc_change_mtu(struct net_device *dev, int new_mtu)
2527 {
2528 if ((new_mtu < 128) || (new_mtu > PC300_DEF_MTU))
2529 return -EINVAL;
2530 dev->mtu = new_mtu;
2531 return 0;
2532 }
2533
2534 int cpc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2535 {
2536 hdlc_device *hdlc = dev_to_hdlc(dev);
2537 pc300dev_t *d = (pc300dev_t *) dev->priv;
2538 pc300ch_t *chan = (pc300ch_t *) d->chan;
2539 pc300_t *card = (pc300_t *) chan->card;
2540 pc300conf_t conf_aux;
2541 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
2542 int ch = chan->channel;
2543 void __user *arg = ifr->ifr_data;
2544 struct if_settings *settings = &ifr->ifr_settings;
2545 void __iomem *scabase = card->hw.scabase;
2546
2547 if (!capable(CAP_NET_ADMIN))
2548 return -EPERM;
2549
2550 switch (cmd) {
2551 case SIOCGPC300CONF:
2552 #ifdef CONFIG_PC300_MLPPP
2553 if (conf->proto != PC300_PROTO_MLPPP) {
2554 conf->proto = hdlc->proto.id;
2555 }
2556 #else
2557 conf->proto = hdlc->proto.id;
2558 #endif
2559 memcpy(&conf_aux.conf, conf, sizeof(pc300chconf_t));
2560 memcpy(&conf_aux.hw, &card->hw, sizeof(pc300hw_t));
2561 if (!arg ||
2562 copy_to_user(arg, &conf_aux, sizeof(pc300conf_t)))
2563 return -EINVAL;
2564 return 0;
2565 case SIOCSPC300CONF:
2566 if (!capable(CAP_NET_ADMIN))
2567 return -EPERM;
2568 if (!arg ||
2569 copy_from_user(&conf_aux.conf, arg, sizeof(pc300chconf_t)))
2570 return -EINVAL;
2571 if (card->hw.cpld_id < 0x02 &&
2572 conf_aux.conf.fr_mode == PC300_FR_UNFRAMED) {
2573 /* CPLD_ID < 0x02 doesn't support Unframed E1 */
2574 return -EINVAL;
2575 }
2576 #ifdef CONFIG_PC300_MLPPP
2577 if (conf_aux.conf.proto == PC300_PROTO_MLPPP) {
2578 if (conf->proto != PC300_PROTO_MLPPP) {
2579 memcpy(conf, &conf_aux.conf, sizeof(pc300chconf_t));
2580 cpc_tty_init(d); /* init TTY driver */
2581 }
2582 } else {
2583 if (conf_aux.conf.proto == 0xffff) {
2584 if (conf->proto == PC300_PROTO_MLPPP){
2585 /* ifdown interface */
2586 cpc_close(dev);
2587 }
2588 } else {
2589 memcpy(conf, &conf_aux.conf, sizeof(pc300chconf_t));
2590 hdlc->proto.id = conf->proto;
2591 }
2592 }
2593 #else
2594 memcpy(conf, &conf_aux.conf, sizeof(pc300chconf_t));
2595 hdlc->proto.id = conf->proto;
2596 #endif
2597 return 0;
2598 case SIOCGPC300STATUS:
2599 cpc_sca_status(card, ch);
2600 return 0;
2601 case SIOCGPC300FALCSTATUS:
2602 cpc_falc_status(card, ch);
2603 return 0;
2604
2605 case SIOCGPC300UTILSTATS:
2606 {
2607 if (!arg) { /* clear statistics */
2608 memset(&hdlc->stats, 0, sizeof(struct net_device_stats));
2609 if (card->hw.type == PC300_TE) {
2610 memset(&chan->falc, 0, sizeof(falc_t));
2611 }
2612 } else {
2613 pc300stats_t pc300stats;
2614
2615 memset(&pc300stats, 0, sizeof(pc300stats_t));
2616 pc300stats.hw_type = card->hw.type;
2617 pc300stats.line_on = card->chan[ch].d.line_on;
2618 pc300stats.line_off = card->chan[ch].d.line_off;
2619 memcpy(&pc300stats.gen_stats, &hdlc->stats,
2620 sizeof(struct net_device_stats));
2621 if (card->hw.type == PC300_TE)
2622 memcpy(&pc300stats.te_stats,&chan->falc,sizeof(falc_t));
2623 if (copy_to_user(arg, &pc300stats, sizeof(pc300stats_t)))
2624 return -EFAULT;
2625 }
2626 return 0;
2627 }
2628
2629 case SIOCGPC300UTILSTATUS:
2630 {
2631 struct pc300status pc300status;
2632
2633 pc300status.hw_type = card->hw.type;
2634 if (card->hw.type == PC300_TE) {
2635 pc300status.te_status.sync = chan->falc.sync;
2636 pc300status.te_status.red_alarm = chan->falc.red_alarm;
2637 pc300status.te_status.blue_alarm = chan->falc.blue_alarm;
2638 pc300status.te_status.loss_fa = chan->falc.loss_fa;
2639 pc300status.te_status.yellow_alarm =chan->falc.yellow_alarm;
2640 pc300status.te_status.loss_mfa = chan->falc.loss_mfa;
2641 pc300status.te_status.prbs = chan->falc.prbs;
2642 } else {
2643 pc300status.gen_status.dcd =
2644 !(cpc_readb (scabase + M_REG(ST3, ch)) & ST3_DCD);
2645 pc300status.gen_status.cts =
2646 !(cpc_readb (scabase + M_REG(ST3, ch)) & ST3_CTS);
2647 pc300status.gen_status.rts =
2648 !(cpc_readb (scabase + M_REG(CTL, ch)) & CTL_RTS);
2649 pc300status.gen_status.dtr =
2650 !(cpc_readb (scabase + M_REG(CTL, ch)) & CTL_DTR);
2651 /* There is no DSR in HD64572 */
2652 }
2653 if (!arg
2654 || copy_to_user(arg, &pc300status, sizeof(pc300status_t)))
2655 return -EINVAL;
2656 return 0;
2657 }
2658
2659 case SIOCSPC300TRACE:
2660 /* Sets/resets a trace_flag for the respective device */
2661 if (!arg || copy_from_user(&d->trace_on, arg,sizeof(unsigned char)))
2662 return -EINVAL;
2663 return 0;
2664
2665 case SIOCSPC300LOOPBACK:
2666 {
2667 struct pc300loopback pc300loop;
2668
2669 /* TE boards only */
2670 if (card->hw.type != PC300_TE)
2671 return -EINVAL;
2672
2673 if (!arg ||
2674 copy_from_user(&pc300loop, arg, sizeof(pc300loopback_t)))
2675 return -EINVAL;
2676 switch (pc300loop.loop_type) {
2677 case PC300LOCLOOP: /* Turn the local loop on/off */
2678 falc_local_loop(card, ch, pc300loop.loop_on);
2679 return 0;
2680
2681 case PC300REMLOOP: /* Turn the remote loop on/off */
2682 falc_remote_loop(card, ch, pc300loop.loop_on);
2683 return 0;
2684
2685 case PC300PAYLOADLOOP: /* Turn the payload loop on/off */
2686 falc_payload_loop(card, ch, pc300loop.loop_on);
2687 return 0;
2688
2689 case PC300GENLOOPUP: /* Generate loop UP */
2690 if (pc300loop.loop_on) {
2691 falc_generate_loop_up_code (card, ch);
2692 } else {
2693 turn_off_xlu(card, ch);
2694 }
2695 return 0;
2696
2697 case PC300GENLOOPDOWN: /* Generate loop DOWN */
2698 if (pc300loop.loop_on) {
2699 falc_generate_loop_down_code (card, ch);
2700 } else {
2701 turn_off_xld(card, ch);
2702 }
2703 return 0;
2704
2705 default:
2706 return -EINVAL;
2707 }
2708 }
2709
2710 case SIOCSPC300PATTERNTEST:
2711 /* Turn the pattern test on/off and show the errors counter */
2712 {
2713 struct pc300patterntst pc300patrntst;
2714
2715 /* TE boards only */
2716 if (card->hw.type != PC300_TE)
2717 return -EINVAL;
2718
2719 if (card->hw.cpld_id < 0x02) {
2720 /* CPLD_ID < 0x02 doesn't support pattern test */
2721 return -EINVAL;
2722 }
2723
2724 if (!arg ||
2725 copy_from_user(&pc300patrntst,arg,sizeof(pc300patterntst_t)))
2726 return -EINVAL;
2727 if (pc300patrntst.patrntst_on == 2) {
2728 if (chan->falc.prbs == 0) {
2729 falc_pattern_test(card, ch, 1);
2730 }
2731 pc300patrntst.num_errors =
2732 falc_pattern_test_error(card, ch);
2733 if (!arg
2734 || copy_to_user(arg, &pc300patrntst,
2735 sizeof (pc300patterntst_t)))
2736 return -EINVAL;
2737 } else {
2738 falc_pattern_test(card, ch, pc300patrntst.patrntst_on);
2739 }
2740 return 0;
2741 }
2742
2743 case SIOCWANDEV:
2744 switch (ifr->ifr_settings.type) {
2745 case IF_GET_IFACE:
2746 {
2747 const size_t size = sizeof(sync_serial_settings);
2748 ifr->ifr_settings.type = conf->media;
2749 if (ifr->ifr_settings.size < size) {
2750 /* data size wanted */
2751 ifr->ifr_settings.size = size;
2752 return -ENOBUFS;
2753 }
2754
2755 if (copy_to_user(settings->ifs_ifsu.sync,
2756 &conf->phys_settings, size)) {
2757 return -EFAULT;
2758 }
2759 return 0;
2760 }
2761
2762 case IF_IFACE_V35:
2763 case IF_IFACE_V24:
2764 case IF_IFACE_X21:
2765 {
2766 const size_t size = sizeof(sync_serial_settings);
2767
2768 if (!capable(CAP_NET_ADMIN)) {
2769 return -EPERM;
2770 }
2771 /* incorrect data len? */
2772 if (ifr->ifr_settings.size != size) {
2773 return -ENOBUFS;
2774 }
2775
2776 if (copy_from_user(&conf->phys_settings,
2777 settings->ifs_ifsu.sync, size)) {
2778 return -EFAULT;
2779 }
2780
2781 if (conf->phys_settings.loopback) {
2782 cpc_writeb(card->hw.scabase + M_REG(MD2, ch),
2783 cpc_readb(card->hw.scabase + M_REG(MD2, ch)) |
2784 MD2_LOOP_MIR);
2785 }
2786 conf->media = ifr->ifr_settings.type;
2787 return 0;
2788 }
2789
2790 case IF_IFACE_T1:
2791 case IF_IFACE_E1:
2792 {
2793 const size_t te_size = sizeof(te1_settings);
2794 const size_t size = sizeof(sync_serial_settings);
2795
2796 if (!capable(CAP_NET_ADMIN)) {
2797 return -EPERM;
2798 }
2799
2800 /* incorrect data len? */
2801 if (ifr->ifr_settings.size != te_size) {
2802 return -ENOBUFS;
2803 }
2804
2805 if (copy_from_user(&conf->phys_settings,
2806 settings->ifs_ifsu.te1, size)) {
2807 return -EFAULT;
2808 }/* Ignoring HDLC slot_map for a while */
2809
2810 if (conf->phys_settings.loopback) {
2811 cpc_writeb(card->hw.scabase + M_REG(MD2, ch),
2812 cpc_readb(card->hw.scabase + M_REG(MD2, ch)) |
2813 MD2_LOOP_MIR);
2814 }
2815 conf->media = ifr->ifr_settings.type;
2816 return 0;
2817 }
2818 default:
2819 return hdlc_ioctl(dev, ifr, cmd);
2820 }
2821
2822 default:
2823 return hdlc_ioctl(dev, ifr, cmd);
2824 }
2825 }
2826
2827 static struct net_device_stats *cpc_get_stats(struct net_device *dev)
2828 {
2829 return hdlc_stats(dev);
2830 }
2831
2832 static int clock_rate_calc(uclong rate, uclong clock, int *br_io)
2833 {
2834 int br, tc;
2835 int br_pwr, error;
2836
2837 if (rate == 0)
2838 return (0);
2839
2840 for (br = 0, br_pwr = 1; br <= 9; br++, br_pwr <<= 1) {
2841 if ((tc = clock / br_pwr / rate) <= 0xff) {
2842 *br_io = br;
2843 break;
2844 }
2845 }
2846
2847 if (tc <= 0xff) {
2848 error = ((rate - (clock / br_pwr / rate)) / rate) * 1000;
2849 /* Errors bigger than +/- 1% won't be tolerated */
2850 if (error < -10 || error > 10)
2851 return (-1);
2852 else
2853 return (tc);
2854 } else {
2855 return (-1);
2856 }
2857 }
2858
2859 int ch_config(pc300dev_t * d)
2860 {
2861 pc300ch_t *chan = (pc300ch_t *) d->chan;
2862 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
2863 pc300_t *card = (pc300_t *) chan->card;
2864 void __iomem *scabase = card->hw.scabase;
2865 void __iomem *plxbase = card->hw.plxbase;
2866 int ch = chan->channel;
2867 uclong clkrate = chan->conf.phys_settings.clock_rate;
2868 uclong clktype = chan->conf.phys_settings.clock_type;
2869 ucshort encoding = chan->conf.proto_settings.encoding;
2870 ucshort parity = chan->conf.proto_settings.parity;
2871 int tmc, br;
2872 ucchar md0, md2;
2873
2874 /* Reset the channel */
2875 cpc_writeb(scabase + M_REG(CMD, ch), CMD_CH_RST);
2876
2877 /* Configure the SCA registers */
2878 switch (parity) {
2879 case PARITY_NONE:
2880 md0 = MD0_BIT_SYNC;
2881 break;
2882 case PARITY_CRC16_PR0:
2883 md0 = MD0_CRC16_0|MD0_CRCC0|MD0_BIT_SYNC;
2884 break;
2885 case PARITY_CRC16_PR1:
2886 md0 = MD0_CRC16_1|MD0_CRCC0|MD0_BIT_SYNC;
2887 break;
2888 case PARITY_CRC32_PR1_CCITT:
2889 md0 = MD0_CRC32|MD0_CRCC0|MD0_BIT_SYNC;
2890 break;
2891 case PARITY_CRC16_PR1_CCITT:
2892 default:
2893 md0 = MD0_CRC_CCITT|MD0_CRCC0|MD0_BIT_SYNC;
2894 break;
2895 }
2896 switch (encoding) {
2897 case ENCODING_NRZI:
2898 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_NRZI;
2899 break;
2900 case ENCODING_FM_MARK: /* FM1 */
2901 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_FM|MD2_FM1;
2902 break;
2903 case ENCODING_FM_SPACE: /* FM0 */
2904 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_FM|MD2_FM0;
2905 break;
2906 case ENCODING_MANCHESTER: /* It's not working... */
2907 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_FM|MD2_MANCH;
2908 break;
2909 case ENCODING_NRZ:
2910 default:
2911 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_NRZ;
2912 break;
2913 }
2914 cpc_writeb(scabase + M_REG(MD0, ch), md0);
2915 cpc_writeb(scabase + M_REG(MD1, ch), 0);
2916 cpc_writeb(scabase + M_REG(MD2, ch), md2);
2917 cpc_writeb(scabase + M_REG(IDL, ch), 0x7e);
2918 cpc_writeb(scabase + M_REG(CTL, ch), CTL_URSKP | CTL_IDLC);
2919
2920 /* Configure HW media */
2921 switch (card->hw.type) {
2922 case PC300_RSV:
2923 if (conf->media == IF_IFACE_V35) {
2924 cpc_writel((plxbase + card->hw.gpioc_reg),
2925 cpc_readl(plxbase + card->hw.gpioc_reg) | PC300_CHMEDIA_MASK(ch));
2926 } else {
2927 cpc_writel((plxbase + card->hw.gpioc_reg),
2928 cpc_readl(plxbase + card->hw.gpioc_reg) & ~PC300_CHMEDIA_MASK(ch));
2929 }
2930 break;
2931
2932 case PC300_X21:
2933 break;
2934
2935 case PC300_TE:
2936 te_config(card, ch);
2937 break;
2938 }
2939
2940 switch (card->hw.type) {
2941 case PC300_RSV:
2942 case PC300_X21:
2943 if (clktype == CLOCK_INT || clktype == CLOCK_TXINT) {
2944 /* Calculate the clkrate parameters */
2945 tmc = clock_rate_calc(clkrate, card->hw.clock, &br);
2946 cpc_writeb(scabase + M_REG(TMCT, ch), tmc);
2947 cpc_writeb(scabase + M_REG(TXS, ch),
2948 (TXS_DTRXC | TXS_IBRG | br));
2949 if (clktype == CLOCK_INT) {
2950 cpc_writeb(scabase + M_REG(TMCR, ch), tmc);
2951 cpc_writeb(scabase + M_REG(RXS, ch),
2952 (RXS_IBRG | br));
2953 } else {
2954 cpc_writeb(scabase + M_REG(TMCR, ch), 1);
2955 cpc_writeb(scabase + M_REG(RXS, ch), 0);
2956 }
2957 if (card->hw.type == PC300_X21) {
2958 cpc_writeb(scabase + M_REG(GPO, ch), 1);
2959 cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1 | EXS_RES1);
2960 } else {
2961 cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1);
2962 }
2963 } else {
2964 cpc_writeb(scabase + M_REG(TMCT, ch), 1);
2965 if (clktype == CLOCK_EXT) {
2966 cpc_writeb(scabase + M_REG(TXS, ch),
2967 TXS_DTRXC);
2968 } else {
2969 cpc_writeb(scabase + M_REG(TXS, ch),
2970 TXS_DTRXC|TXS_RCLK);
2971 }
2972 cpc_writeb(scabase + M_REG(TMCR, ch), 1);
2973 cpc_writeb(scabase + M_REG(RXS, ch), 0);
2974 if (card->hw.type == PC300_X21) {
2975 cpc_writeb(scabase + M_REG(GPO, ch), 0);
2976 cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1 | EXS_RES1);
2977 } else {
2978 cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1);
2979 }
2980 }
2981 break;
2982
2983 case PC300_TE:
2984 /* SCA always receives clock from the FALC chip */
2985 cpc_writeb(scabase + M_REG(TMCT, ch), 1);
2986 cpc_writeb(scabase + M_REG(TXS, ch), 0);
2987 cpc_writeb(scabase + M_REG(TMCR, ch), 1);
2988 cpc_writeb(scabase + M_REG(RXS, ch), 0);
2989 cpc_writeb(scabase + M_REG(EXS, ch), 0);
2990 break;
2991 }
2992
2993 /* Enable Interrupts */
2994 cpc_writel(scabase + IER0,
2995 cpc_readl(scabase + IER0) |
2996 IR0_M(IR0_RXINTA, ch) |
2997 IR0_DRX(IR0_EFT | IR0_DMIA | IR0_DMIB, ch) |
2998 IR0_DTX(IR0_EFT | IR0_DMIA | IR0_DMIB, ch));
2999 cpc_writeb(scabase + M_REG(IE0, ch),
3000 cpc_readl(scabase + M_REG(IE0, ch)) | IE0_RXINTA);
3001 cpc_writeb(scabase + M_REG(IE1, ch),
3002 cpc_readl(scabase + M_REG(IE1, ch)) | IE1_CDCD);
3003
3004 return 0;
3005 }
3006
3007 int rx_config(pc300dev_t * d)
3008 {
3009 pc300ch_t *chan = (pc300ch_t *) d->chan;
3010 pc300_t *card = (pc300_t *) chan->card;
3011 void __iomem *scabase = card->hw.scabase;
3012 int ch = chan->channel;
3013
3014 cpc_writeb(scabase + DSR_RX(ch), 0);
3015
3016 /* General RX settings */
3017 cpc_writeb(scabase + M_REG(RRC, ch), 0);
3018 cpc_writeb(scabase + M_REG(RNR, ch), 16);
3019
3020 /* Enable reception */
3021 cpc_writeb(scabase + M_REG(CMD, ch), CMD_RX_CRC_INIT);
3022 cpc_writeb(scabase + M_REG(CMD, ch), CMD_RX_ENA);
3023
3024 /* Initialize DMA stuff */
3025 chan->rx_first_bd = 0;
3026 chan->rx_last_bd = N_DMA_RX_BUF - 1;
3027 rx_dma_buf_init(card, ch);
3028 cpc_writeb(scabase + DCR_RX(ch), DCR_FCT_CLR);
3029 cpc_writeb(scabase + DMR_RX(ch), (DMR_TMOD | DMR_NF));
3030 cpc_writeb(scabase + DIR_RX(ch), (DIR_EOM | DIR_BOF));
3031
3032 /* Start DMA */
3033 rx_dma_start(card, ch);
3034
3035 return 0;
3036 }
3037
3038 int tx_config(pc300dev_t * d)
3039 {
3040 pc300ch_t *chan = (pc300ch_t *) d->chan;
3041 pc300_t *card = (pc300_t *) chan->card;
3042 void __iomem *scabase = card->hw.scabase;
3043 int ch = chan->channel;
3044
3045 cpc_writeb(scabase + DSR_TX(ch), 0);
3046
3047 /* General TX settings */
3048 cpc_writeb(scabase + M_REG(TRC0, ch), 0);
3049 cpc_writeb(scabase + M_REG(TFS, ch), 32);
3050 cpc_writeb(scabase + M_REG(TNR0, ch), 20);
3051 cpc_writeb(scabase + M_REG(TNR1, ch), 48);
3052 cpc_writeb(scabase + M_REG(TCR, ch), 8);
3053
3054 /* Enable transmission */
3055 cpc_writeb(scabase + M_REG(CMD, ch), CMD_TX_CRC_INIT);
3056
3057 /* Initialize DMA stuff */
3058 chan->tx_first_bd = 0;
3059 chan->tx_next_bd = 0;
3060 tx_dma_buf_init(card, ch);
3061 cpc_writeb(scabase + DCR_TX(ch), DCR_FCT_CLR);
3062 cpc_writeb(scabase + DMR_TX(ch), (DMR_TMOD | DMR_NF));
3063 cpc_writeb(scabase + DIR_TX(ch), (DIR_EOM | DIR_BOF | DIR_UDRF));
3064 cpc_writel(scabase + DTX_REG(CDAL, ch), TX_BD_ADDR(ch, chan->tx_first_bd));
3065 cpc_writel(scabase + DTX_REG(EDAL, ch), TX_BD_ADDR(ch, chan->tx_next_bd));
3066
3067 return 0;
3068 }
3069
3070 static int cpc_attach(struct net_device *dev, unsigned short encoding,
3071 unsigned short parity)
3072 {
3073 pc300dev_t *d = (pc300dev_t *)dev->priv;
3074 pc300ch_t *chan = (pc300ch_t *)d->chan;
3075 pc300_t *card = (pc300_t *)chan->card;
3076 pc300chconf_t *conf = (pc300chconf_t *)&chan->conf;
3077
3078 if (card->hw.type == PC300_TE) {
3079 if (encoding != ENCODING_NRZ && encoding != ENCODING_NRZI) {
3080 return -EINVAL;
3081 }
3082 } else {
3083 if (encoding != ENCODING_NRZ && encoding != ENCODING_NRZI &&
3084 encoding != ENCODING_FM_MARK && encoding != ENCODING_FM_SPACE) {
3085 /* Driver doesn't support ENCODING_MANCHESTER yet */
3086 return -EINVAL;
3087 }
3088 }
3089
3090 if (parity != PARITY_NONE && parity != PARITY_CRC16_PR0 &&
3091 parity != PARITY_CRC16_PR1 && parity != PARITY_CRC32_PR1_CCITT &&
3092 parity != PARITY_CRC16_PR1_CCITT) {
3093 return -EINVAL;
3094 }
3095
3096 conf->proto_settings.encoding = encoding;
3097 conf->proto_settings.parity = parity;
3098 return 0;
3099 }
3100
3101 void cpc_opench(pc300dev_t * d)
3102 {
3103 pc300ch_t *chan = (pc300ch_t *) d->chan;
3104 pc300_t *card = (pc300_t *) chan->card;
3105 int ch = chan->channel;
3106 void __iomem *scabase = card->hw.scabase;
3107
3108 ch_config(d);
3109
3110 rx_config(d);
3111
3112 tx_config(d);
3113
3114 /* Assert RTS and DTR */
3115 cpc_writeb(scabase + M_REG(CTL, ch),
3116 cpc_readb(scabase + M_REG(CTL, ch)) & ~(CTL_RTS | CTL_DTR));
3117 }
3118
3119 void cpc_closech(pc300dev_t * d)
3120 {
3121 pc300ch_t *chan = (pc300ch_t *) d->chan;
3122 pc300_t *card = (pc300_t *) chan->card;
3123 falc_t *pfalc = (falc_t *) & chan->falc;
3124 int ch = chan->channel;
3125
3126 cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_CH_RST);
3127 rx_dma_stop(card, ch);
3128 tx_dma_stop(card, ch);
3129
3130 if (card->hw.type == PC300_TE) {
3131 memset(pfalc, 0, sizeof(falc_t));
3132 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
3133 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
3134 ~((CPLD_REG2_FALC_TX_CLK | CPLD_REG2_FALC_RX_CLK |
3135 CPLD_REG2_FALC_LED2) << (2 * ch)));
3136 /* Reset the FALC chip */
3137 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
3138 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
3139 (CPLD_REG1_FALC_RESET << (2 * ch)));
3140 udelay(10000);
3141 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
3142 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) &
3143 ~(CPLD_REG1_FALC_RESET << (2 * ch)));
3144 }
3145 }
3146
3147 int cpc_open(struct net_device *dev)
3148 {
3149 hdlc_device *hdlc = dev_to_hdlc(dev);
3150 pc300dev_t *d = (pc300dev_t *) dev->priv;
3151 struct ifreq ifr;
3152 int result;
3153
3154 #ifdef PC300_DEBUG_OTHER
3155 printk("pc300: cpc_open");
3156 #endif
3157
3158 if (hdlc->proto.id == IF_PROTO_PPP) {
3159 d->if_ptr = &hdlc->state.ppp.pppdev;
3160 }
3161
3162 result = hdlc_open(dev);
3163 if (hdlc->proto.id == IF_PROTO_PPP) {
3164 dev->priv = d;
3165 }
3166 if (result) {
3167 return result;
3168 }
3169
3170 sprintf(ifr.ifr_name, "%s", dev->name);
3171 cpc_opench(d);
3172 netif_start_queue(dev);
3173 return 0;
3174 }
3175
3176 int cpc_close(struct net_device *dev)
3177 {
3178 hdlc_device *hdlc = dev_to_hdlc(dev);
3179 pc300dev_t *d = (pc300dev_t *) dev->priv;
3180 pc300ch_t *chan = (pc300ch_t *) d->chan;
3181 pc300_t *card = (pc300_t *) chan->card;
3182 unsigned long flags;
3183
3184 #ifdef PC300_DEBUG_OTHER
3185 printk("pc300: cpc_close");
3186 #endif
3187
3188 netif_stop_queue(dev);
3189
3190 CPC_LOCK(card, flags);
3191 cpc_closech(d);
3192 CPC_UNLOCK(card, flags);
3193
3194 hdlc_close(dev);
3195 if (hdlc->proto.id == IF_PROTO_PPP) {
3196 d->if_ptr = NULL;
3197 }
3198 #ifdef CONFIG_PC300_MLPPP
3199 if (chan->conf.proto == PC300_PROTO_MLPPP) {
3200 cpc_tty_unregister_service(d);
3201 chan->conf.proto = 0xffff;
3202 }
3203 #endif
3204
3205 return 0;
3206 }
3207
3208 static uclong detect_ram(pc300_t * card)
3209 {
3210 uclong i;
3211 ucchar data;
3212 void __iomem *rambase = card->hw.rambase;
3213
3214 card->hw.ramsize = PC300_RAMSIZE;
3215 /* Let's find out how much RAM is present on this board */
3216 for (i = 0; i < card->hw.ramsize; i++) {
3217 data = (ucchar) (i & 0xff);
3218 cpc_writeb(rambase + i, data);
3219 if (cpc_readb(rambase + i) != data) {
3220 break;
3221 }
3222 }
3223 return (i);
3224 }
3225
3226 static void plx_init(pc300_t * card)
3227 {
3228 struct RUNTIME_9050 __iomem *plx_ctl = card->hw.plxbase;
3229
3230 /* Reset PLX */
3231 cpc_writel(&plx_ctl->init_ctrl,
3232 cpc_readl(&plx_ctl->init_ctrl) | 0x40000000);
3233 udelay(10000L);
3234 cpc_writel(&plx_ctl->init_ctrl,
3235 cpc_readl(&plx_ctl->init_ctrl) & ~0x40000000);
3236
3237 /* Reload Config. Registers from EEPROM */
3238 cpc_writel(&plx_ctl->init_ctrl,
3239 cpc_readl(&plx_ctl->init_ctrl) | 0x20000000);
3240 udelay(10000L);
3241 cpc_writel(&plx_ctl->init_ctrl,
3242 cpc_readl(&plx_ctl->init_ctrl) & ~0x20000000);
3243
3244 }
3245
3246 static inline void show_version(void)
3247 {
3248 char *rcsvers, *rcsdate, *tmp;
3249
3250 rcsvers = strchr(rcsid, ' ');
3251 rcsvers++;
3252 tmp = strchr(rcsvers, ' ');
3253 *tmp++ = '\0';
3254 rcsdate = strchr(tmp, ' ');
3255 rcsdate++;
3256 tmp = strrchr(rcsdate, ' ');
3257 *tmp = '\0';
3258 printk(KERN_INFO "Cyclades-PC300 driver %s %s (built %s %s)\n",
3259 rcsvers, rcsdate, __DATE__, __TIME__);
3260 } /* show_version */
3261
3262 static void cpc_init_card(pc300_t * card)
3263 {
3264 int i, devcount = 0;
3265 static int board_nbr = 1;
3266
3267 /* Enable interrupts on the PCI bridge */
3268 plx_init(card);
3269 cpc_writew(card->hw.plxbase + card->hw.intctl_reg,
3270 cpc_readw(card->hw.plxbase + card->hw.intctl_reg) | 0x0040);
3271
3272 #ifdef USE_PCI_CLOCK
3273 /* Set board clock to PCI clock */
3274 cpc_writel(card->hw.plxbase + card->hw.gpioc_reg,
3275 cpc_readl(card->hw.plxbase + card->hw.gpioc_reg) | 0x00000004UL);
3276 card->hw.clock = PC300_PCI_CLOCK;
3277 #else
3278 /* Set board clock to internal oscillator clock */
3279 cpc_writel(card->hw.plxbase + card->hw.gpioc_reg,
3280 cpc_readl(card->hw.plxbase + card->hw.gpioc_reg) & ~0x00000004UL);
3281 card->hw.clock = PC300_OSC_CLOCK;
3282 #endif
3283
3284 /* Detect actual on-board RAM size */
3285 card->hw.ramsize = detect_ram(card);
3286
3287 /* Set Global SCA-II registers */
3288 cpc_writeb(card->hw.scabase + PCR, PCR_PR2);
3289 cpc_writeb(card->hw.scabase + BTCR, 0x10);
3290 cpc_writeb(card->hw.scabase + WCRL, 0);
3291 cpc_writeb(card->hw.scabase + DMER, 0x80);
3292
3293 if (card->hw.type == PC300_TE) {
3294 ucchar reg1;
3295
3296 /* Check CPLD version */
3297 reg1 = cpc_readb(card->hw.falcbase + CPLD_REG1);
3298 cpc_writeb(card->hw.falcbase + CPLD_REG1, (reg1 + 0x5a));
3299 if (cpc_readb(card->hw.falcbase + CPLD_REG1) == reg1) {
3300 /* New CPLD */
3301 card->hw.cpld_id = cpc_readb(card->hw.falcbase + CPLD_ID_REG);
3302 card->hw.cpld_reg1 = CPLD_V2_REG1;
3303 card->hw.cpld_reg2 = CPLD_V2_REG2;
3304 } else {
3305 /* old CPLD */
3306 card->hw.cpld_id = 0;
3307 card->hw.cpld_reg1 = CPLD_REG1;
3308 card->hw.cpld_reg2 = CPLD_REG2;
3309 cpc_writeb(card->hw.falcbase + CPLD_REG1, reg1);
3310 }
3311
3312 /* Enable the board's global clock */
3313 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
3314 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
3315 CPLD_REG1_GLOBAL_CLK);
3316
3317 }
3318
3319 for (i = 0; i < card->hw.nchan; i++) {
3320 pc300ch_t *chan = &card->chan[i];
3321 pc300dev_t *d = &chan->d;
3322 hdlc_device *hdlc;
3323 struct net_device *dev;
3324
3325 chan->card = card;
3326 chan->channel = i;
3327 chan->conf.phys_settings.clock_rate = 0;
3328 chan->conf.phys_settings.clock_type = CLOCK_EXT;
3329 chan->conf.proto_settings.encoding = ENCODING_NRZ;
3330 chan->conf.proto_settings.parity = PARITY_CRC16_PR1_CCITT;
3331 switch (card->hw.type) {
3332 case PC300_TE:
3333 chan->conf.media = IF_IFACE_T1;
3334 chan->conf.lcode = PC300_LC_B8ZS;
3335 chan->conf.fr_mode = PC300_FR_ESF;
3336 chan->conf.lbo = PC300_LBO_0_DB;
3337 chan->conf.rx_sens = PC300_RX_SENS_SH;
3338 chan->conf.tslot_bitmap = 0xffffffffUL;
3339 break;
3340
3341 case PC300_X21:
3342 chan->conf.media = IF_IFACE_X21;
3343 break;
3344
3345 case PC300_RSV:
3346 default:
3347 chan->conf.media = IF_IFACE_V35;
3348 break;
3349 }
3350 chan->conf.proto = IF_PROTO_PPP;
3351 chan->tx_first_bd = 0;
3352 chan->tx_next_bd = 0;
3353 chan->rx_first_bd = 0;
3354 chan->rx_last_bd = N_DMA_RX_BUF - 1;
3355 chan->nfree_tx_bd = N_DMA_TX_BUF;
3356
3357 d->chan = chan;
3358 d->tx_skb = NULL;
3359 d->trace_on = 0;
3360 d->line_on = 0;
3361 d->line_off = 0;
3362
3363 dev = alloc_hdlcdev(NULL);
3364 if (dev == NULL)
3365 continue;
3366
3367 hdlc = dev_to_hdlc(dev);
3368 hdlc->xmit = cpc_queue_xmit;
3369 hdlc->attach = cpc_attach;
3370 d->dev = dev;
3371 dev->mem_start = card->hw.ramphys;
3372 dev->mem_end = card->hw.ramphys + card->hw.ramsize - 1;
3373 dev->irq = card->hw.irq;
3374 dev->init = NULL;
3375 dev->tx_queue_len = PC300_TX_QUEUE_LEN;
3376 dev->mtu = PC300_DEF_MTU;
3377
3378 dev->open = cpc_open;
3379 dev->stop = cpc_close;
3380 dev->tx_timeout = cpc_tx_timeout;
3381 dev->watchdog_timeo = PC300_TX_TIMEOUT;
3382 dev->get_stats = cpc_get_stats;
3383 dev->set_multicast_list = NULL;
3384 dev->set_mac_address = NULL;
3385 dev->change_mtu = cpc_change_mtu;
3386 dev->do_ioctl = cpc_ioctl;
3387
3388 if (register_hdlc_device(dev) == 0) {
3389 dev->priv = d; /* We need 'priv', hdlc doesn't */
3390 printk("%s: Cyclades-PC300/", dev->name);
3391 switch (card->hw.type) {
3392 case PC300_TE:
3393 if (card->hw.bus == PC300_PMC) {
3394 printk("TE-M");
3395 } else {
3396 printk("TE ");
3397 }
3398 break;
3399
3400 case PC300_X21:
3401 printk("X21 ");
3402 break;
3403
3404 case PC300_RSV:
3405 default:
3406 printk("RSV ");
3407 break;
3408 }
3409 printk (" #%d, %dKB of RAM at 0x%08x, IRQ%d, channel %d.\n",
3410 board_nbr, card->hw.ramsize / 1024,
3411 card->hw.ramphys, card->hw.irq, i + 1);
3412 devcount++;
3413 } else {
3414 printk ("Dev%d on card(0x%08x): unable to allocate i/f name.\n",
3415 i + 1, card->hw.ramphys);
3416 free_netdev(dev);
3417 continue;
3418 }
3419 }
3420 spin_lock_init(&card->card_lock);
3421
3422 board_nbr++;
3423 }
3424
3425 static int __devinit
3426 cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
3427 {
3428 static int first_time = 1;
3429 ucchar cpc_rev_id;
3430 int err = 0, eeprom_outdated = 0;
3431 ucshort device_id;
3432 pc300_t *card;
3433
3434 if (first_time) {
3435 first_time = 0;
3436 show_version();
3437 #ifdef CONFIG_PC300_MLPPP
3438 cpc_tty_reset_var();
3439 #endif
3440 }
3441
3442 card = (pc300_t *) kmalloc(sizeof(pc300_t), GFP_KERNEL);
3443 if (card == NULL) {
3444 printk("PC300 found at RAM 0x%08lx, "
3445 "but could not allocate card structure.\n",
3446 pci_resource_start(pdev, 3));
3447 return -ENOMEM;
3448 }
3449 memset(card, 0, sizeof(pc300_t));
3450
3451 /* read PCI configuration area */
3452 device_id = ent->device;
3453 card->hw.irq = pdev->irq;
3454 card->hw.iophys = pci_resource_start(pdev, 1);
3455 card->hw.iosize = pci_resource_len(pdev, 1);
3456 card->hw.scaphys = pci_resource_start(pdev, 2);
3457 card->hw.scasize = pci_resource_len(pdev, 2);
3458 card->hw.ramphys = pci_resource_start(pdev, 3);
3459 card->hw.alloc_ramsize = pci_resource_len(pdev, 3);
3460 card->hw.falcphys = pci_resource_start(pdev, 4);
3461 card->hw.falcsize = pci_resource_len(pdev, 4);
3462 card->hw.plxphys = pci_resource_start(pdev, 5);
3463 card->hw.plxsize = pci_resource_len(pdev, 5);
3464 pci_read_config_byte(pdev, PCI_REVISION_ID, &cpc_rev_id);
3465
3466 switch (device_id) {
3467 case PCI_DEVICE_ID_PC300_RX_1:
3468 case PCI_DEVICE_ID_PC300_TE_1:
3469 case PCI_DEVICE_ID_PC300_TE_M_1:
3470 card->hw.nchan = 1;
3471 break;
3472
3473 case PCI_DEVICE_ID_PC300_RX_2:
3474 case PCI_DEVICE_ID_PC300_TE_2:
3475 case PCI_DEVICE_ID_PC300_TE_M_2:
3476 default:
3477 card->hw.nchan = PC300_MAXCHAN;
3478 break;
3479 }
3480 #ifdef PC300_DEBUG_PCI
3481 printk("cpc (bus=0x0%x,pci_id=0x%x,", pdev->bus->number, pdev->devfn);
3482 printk("rev_id=%d) IRQ%d\n", cpc_rev_id, card->hw.irq);
3483 printk("cpc:found ramaddr=0x%08lx plxaddr=0x%08lx "
3484 "ctladdr=0x%08lx falcaddr=0x%08lx\n",
3485 card->hw.ramphys, card->hw.plxphys, card->hw.scaphys,
3486 card->hw.falcphys);
3487 #endif
3488 /* Although we don't use this I/O region, we should
3489 * request it from the kernel anyway, to avoid problems
3490 * with other drivers accessing it. */
3491 if (!request_region(card->hw.iophys, card->hw.iosize, "PLX Registers")) {
3492 /* In case we can't allocate it, warn user */
3493 printk("WARNING: couldn't allocate I/O region for PC300 board "
3494 "at 0x%08x!\n", card->hw.ramphys);
3495 }
3496
3497 if (card->hw.plxphys) {
3498 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, card->hw.plxphys);
3499 } else {
3500 eeprom_outdated = 1;
3501 card->hw.plxphys = pci_resource_start(pdev, 0);
3502 card->hw.plxsize = pci_resource_len(pdev, 0);
3503 }
3504
3505 if (!request_mem_region(card->hw.plxphys, card->hw.plxsize,
3506 "PLX Registers")) {
3507 printk("PC300 found at RAM 0x%08x, "
3508 "but could not allocate PLX mem region.\n",
3509 card->hw.ramphys);
3510 err = -ENODEV;
3511 goto err_release_io;
3512 }
3513 if (!request_mem_region(card->hw.ramphys, card->hw.alloc_ramsize,
3514 "On-board RAM")) {
3515 printk("PC300 found at RAM 0x%08x, "
3516 "but could not allocate RAM mem region.\n",
3517 card->hw.ramphys);
3518 err = -ENODEV;
3519 goto err_release_plx;
3520 }
3521 if (!request_mem_region(card->hw.scaphys, card->hw.scasize,
3522 "SCA-II Registers")) {
3523 printk("PC300 found at RAM 0x%08x, "
3524 "but could not allocate SCA mem region.\n",
3525 card->hw.ramphys);
3526 err = -ENODEV;
3527 goto err_release_ram;
3528 }
3529
3530 if ((err = pci_enable_device(pdev)) != 0)
3531 goto err_release_sca;
3532
3533 card->hw.plxbase = ioremap(card->hw.plxphys, card->hw.plxsize);
3534 card->hw.rambase = ioremap(card->hw.ramphys, card->hw.alloc_ramsize);
3535 card->hw.scabase = ioremap(card->hw.scaphys, card->hw.scasize);
3536 switch (device_id) {
3537 case PCI_DEVICE_ID_PC300_TE_1:
3538 case PCI_DEVICE_ID_PC300_TE_2:
3539 case PCI_DEVICE_ID_PC300_TE_M_1:
3540 case PCI_DEVICE_ID_PC300_TE_M_2:
3541 request_mem_region(card->hw.falcphys, card->hw.falcsize,
3542 "FALC Registers");
3543 card->hw.falcbase = ioremap(card->hw.falcphys, card->hw.falcsize);
3544 break;
3545
3546 case PCI_DEVICE_ID_PC300_RX_1:
3547 case PCI_DEVICE_ID_PC300_RX_2:
3548 default:
3549 card->hw.falcbase = NULL;
3550 break;
3551 }
3552
3553 #ifdef PC300_DEBUG_PCI
3554 printk("cpc: relocate ramaddr=0x%08lx plxaddr=0x%08lx "
3555 "ctladdr=0x%08lx falcaddr=0x%08lx\n",
3556 card->hw.rambase, card->hw.plxbase, card->hw.scabase,
3557 card->hw.falcbase);
3558 #endif
3559
3560 /* Set PCI drv pointer to the card structure */
3561 pci_set_drvdata(pdev, card);
3562
3563 /* Set board type */
3564 switch (device_id) {
3565 case PCI_DEVICE_ID_PC300_TE_1:
3566 case PCI_DEVICE_ID_PC300_TE_2:
3567 case PCI_DEVICE_ID_PC300_TE_M_1:
3568 case PCI_DEVICE_ID_PC300_TE_M_2:
3569 card->hw.type = PC300_TE;
3570
3571 if ((device_id == PCI_DEVICE_ID_PC300_TE_M_1) ||
3572 (device_id == PCI_DEVICE_ID_PC300_TE_M_2)) {
3573 card->hw.bus = PC300_PMC;
3574 /* Set PLX register offsets */
3575 card->hw.gpioc_reg = 0x54;
3576 card->hw.intctl_reg = 0x4c;
3577 } else {
3578 card->hw.bus = PC300_PCI;
3579 /* Set PLX register offsets */
3580 card->hw.gpioc_reg = 0x50;
3581 card->hw.intctl_reg = 0x4c;
3582 }
3583 break;
3584
3585 case PCI_DEVICE_ID_PC300_RX_1:
3586 case PCI_DEVICE_ID_PC300_RX_2:
3587 default:
3588 card->hw.bus = PC300_PCI;
3589 /* Set PLX register offsets */
3590 card->hw.gpioc_reg = 0x50;
3591 card->hw.intctl_reg = 0x4c;
3592
3593 if ((cpc_readl(card->hw.plxbase + card->hw.gpioc_reg) & PC300_CTYPE_MASK)) {
3594 card->hw.type = PC300_X21;
3595 } else {
3596 card->hw.type = PC300_RSV;
3597 }
3598 break;
3599 }
3600
3601 /* Allocate IRQ */
3602 if (request_irq(card->hw.irq, cpc_intr, SA_SHIRQ, "Cyclades-PC300", card)) {
3603 printk ("PC300 found at RAM 0x%08x, but could not allocate IRQ%d.\n",
3604 card->hw.ramphys, card->hw.irq);
3605 goto err_io_unmap;
3606 }
3607
3608 cpc_init_card(card);
3609
3610 if (eeprom_outdated)
3611 printk("WARNING: PC300 with outdated EEPROM.\n");
3612 return 0;
3613
3614 err_io_unmap:
3615 iounmap(card->hw.plxbase);
3616 iounmap(card->hw.scabase);
3617 iounmap(card->hw.rambase);
3618 if (card->hw.type == PC300_TE) {
3619 iounmap(card->hw.falcbase);
3620 release_mem_region(card->hw.falcphys, card->hw.falcsize);
3621 }
3622 err_release_sca:
3623 release_mem_region(card->hw.scaphys, card->hw.scasize);
3624 err_release_ram:
3625 release_mem_region(card->hw.ramphys, card->hw.alloc_ramsize);
3626 err_release_plx:
3627 release_mem_region(card->hw.plxphys, card->hw.plxsize);
3628 err_release_io:
3629 release_region(card->hw.iophys, card->hw.iosize);
3630 kfree(card);
3631 return -ENODEV;
3632 }
3633
3634 static void __devexit cpc_remove_one(struct pci_dev *pdev)
3635 {
3636 pc300_t *card = pci_get_drvdata(pdev);
3637
3638 if (card->hw.rambase != 0) {
3639 int i;
3640
3641 /* Disable interrupts on the PCI bridge */
3642 cpc_writew(card->hw.plxbase + card->hw.intctl_reg,
3643 cpc_readw(card->hw.plxbase + card->hw.intctl_reg) & ~(0x0040));
3644
3645 for (i = 0; i < card->hw.nchan; i++) {
3646 unregister_hdlc_device(card->chan[i].d.dev);
3647 }
3648 iounmap(card->hw.plxbase);
3649 iounmap(card->hw.scabase);
3650 iounmap(card->hw.rambase);
3651 release_mem_region(card->hw.plxphys, card->hw.plxsize);
3652 release_mem_region(card->hw.ramphys, card->hw.alloc_ramsize);
3653 release_mem_region(card->hw.scaphys, card->hw.scasize);
3654 release_region(card->hw.iophys, card->hw.iosize);
3655 if (card->hw.type == PC300_TE) {
3656 iounmap(card->hw.falcbase);
3657 release_mem_region(card->hw.falcphys, card->hw.falcsize);
3658 }
3659 for (i = 0; i < card->hw.nchan; i++)
3660 if (card->chan[i].d.dev)
3661 free_netdev(card->chan[i].d.dev);
3662 if (card->hw.irq)
3663 free_irq(card->hw.irq, card);
3664 kfree(card);
3665 }
3666 }
3667
3668 static struct pci_driver cpc_driver = {
3669 .name = "pc300",
3670 .id_table = cpc_pci_dev_id,
3671 .probe = cpc_init_one,
3672 .remove = __devexit_p(cpc_remove_one),
3673 };
3674
3675 static int __init cpc_init(void)
3676 {
3677 return pci_module_init(&cpc_driver);
3678 }
3679
3680 static void __exit cpc_cleanup_module(void)
3681 {
3682 pci_unregister_driver(&cpc_driver);
3683 }
3684
3685 module_init(cpc_init);
3686 module_exit(cpc_cleanup_module);
3687
3688 MODULE_DESCRIPTION("Cyclades-PC300 cards driver");
3689 MODULE_AUTHOR( "Author: Ivan Passos <ivan@cyclades.com>\r\n"
3690 "Maintainer: PC300 Maintainer <pc300@cyclades.com");
3691 MODULE_LICENSE("GPL");
3692
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