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[SK_BUFF]: Introduce skb_reset_mac_header(skb)
[linux-2.6/mini2440.git] / drivers / net / wan / pc300_drv.c
blobedbc55528be516ee5628b2b79d6ca85f2791b29b
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 *);
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 static int cpc_close(struct net_device *dev);
295
296 #ifdef CONFIG_PC300_MLPPP
297 void cpc_tty_init(pc300dev_t * dev);
298 void cpc_tty_unregister_service(pc300dev_t * pc300dev);
299 void cpc_tty_receive(pc300dev_t * pc300dev);
300 void cpc_tty_trigger_poll(pc300dev_t * pc300dev);
301 void cpc_tty_reset_var(void);
302 #endif
303
304 /************************/
305 /*** DMA Routines ***/
306 /************************/
307 static void tx_dma_buf_pt_init(pc300_t * card, int ch)
308 {
309 int i;
310 int ch_factor = ch * N_DMA_TX_BUF;
311 volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
312 + DMA_TX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
313
314 for (i = 0; i < N_DMA_TX_BUF; i++, ptdescr++) {
315 cpc_writel(&ptdescr->next, (uclong) (DMA_TX_BD_BASE +
316 (ch_factor + ((i + 1) & (N_DMA_TX_BUF - 1))) * sizeof(pcsca_bd_t)));
317 cpc_writel(&ptdescr->ptbuf,
318 (uclong) (DMA_TX_BASE + (ch_factor + i) * BD_DEF_LEN));
319 }
320 }
321
322 static void tx_dma_buf_init(pc300_t * card, int ch)
323 {
324 int i;
325 int ch_factor = ch * N_DMA_TX_BUF;
326 volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
327 + DMA_TX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
328
329 for (i = 0; i < N_DMA_TX_BUF; i++, ptdescr++) {
330 memset_io(ptdescr, 0, sizeof(pcsca_bd_t));
331 cpc_writew(&ptdescr->len, 0);
332 cpc_writeb(&ptdescr->status, DST_OSB);
333 }
334 tx_dma_buf_pt_init(card, ch);
335 }
336
337 static void rx_dma_buf_pt_init(pc300_t * card, int ch)
338 {
339 int i;
340 int ch_factor = ch * N_DMA_RX_BUF;
341 volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
342 + DMA_RX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
343
344 for (i = 0; i < N_DMA_RX_BUF; i++, ptdescr++) {
345 cpc_writel(&ptdescr->next, (uclong) (DMA_RX_BD_BASE +
346 (ch_factor + ((i + 1) & (N_DMA_RX_BUF - 1))) * sizeof(pcsca_bd_t)));
347 cpc_writel(&ptdescr->ptbuf,
348 (uclong) (DMA_RX_BASE + (ch_factor + i) * BD_DEF_LEN));
349 }
350 }
351
352 static void rx_dma_buf_init(pc300_t * card, int ch)
353 {
354 int i;
355 int ch_factor = ch * N_DMA_RX_BUF;
356 volatile pcsca_bd_t __iomem *ptdescr = (card->hw.rambase
357 + DMA_RX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
358
359 for (i = 0; i < N_DMA_RX_BUF; i++, ptdescr++) {
360 memset_io(ptdescr, 0, sizeof(pcsca_bd_t));
361 cpc_writew(&ptdescr->len, 0);
362 cpc_writeb(&ptdescr->status, 0);
363 }
364 rx_dma_buf_pt_init(card, ch);
365 }
366
367 static void tx_dma_buf_check(pc300_t * card, int ch)
368 {
369 volatile pcsca_bd_t __iomem *ptdescr;
370 int i;
371 ucshort first_bd = card->chan[ch].tx_first_bd;
372 ucshort next_bd = card->chan[ch].tx_next_bd;
373
374 printk("#CH%d: f_bd = %d(0x%08zx), n_bd = %d(0x%08zx)\n", ch,
375 first_bd, TX_BD_ADDR(ch, first_bd),
376 next_bd, TX_BD_ADDR(ch, next_bd));
377 for (i = first_bd,
378 ptdescr = (card->hw.rambase + TX_BD_ADDR(ch, first_bd));
379 i != ((next_bd + 1) & (N_DMA_TX_BUF - 1));
380 i = (i + 1) & (N_DMA_TX_BUF - 1),
381 ptdescr = (card->hw.rambase + TX_BD_ADDR(ch, i))) {
382 printk("\n CH%d TX%d: next=0x%x, ptbuf=0x%x, ST=0x%x, len=%d",
383 ch, i, cpc_readl(&ptdescr->next),
384 cpc_readl(&ptdescr->ptbuf),
385 cpc_readb(&ptdescr->status), cpc_readw(&ptdescr->len));
386 }
387 printk("\n");
388 }
389
390 #ifdef PC300_DEBUG_OTHER
391 /* Show all TX buffer descriptors */
392 static void tx1_dma_buf_check(pc300_t * card, int ch)
393 {
394 volatile pcsca_bd_t __iomem *ptdescr;
395 int i;
396 ucshort first_bd = card->chan[ch].tx_first_bd;
397 ucshort next_bd = card->chan[ch].tx_next_bd;
398 uclong scabase = card->hw.scabase;
399
400 printk ("\nnfree_tx_bd = %d \n", card->chan[ch].nfree_tx_bd);
401 printk("#CH%d: f_bd = %d(0x%08x), n_bd = %d(0x%08x)\n", ch,
402 first_bd, TX_BD_ADDR(ch, first_bd),
403 next_bd, TX_BD_ADDR(ch, next_bd));
404 printk("TX_CDA=0x%08x, TX_EDA=0x%08x\n",
405 cpc_readl(scabase + DTX_REG(CDAL, ch)),
406 cpc_readl(scabase + DTX_REG(EDAL, ch)));
407 for (i = 0; i < N_DMA_TX_BUF; i++) {
408 ptdescr = (card->hw.rambase + TX_BD_ADDR(ch, i));
409 printk("\n CH%d TX%d: next=0x%x, ptbuf=0x%x, ST=0x%x, len=%d",
410 ch, i, cpc_readl(&ptdescr->next),
411 cpc_readl(&ptdescr->ptbuf),
412 cpc_readb(&ptdescr->status), cpc_readw(&ptdescr->len));
413 }
414 printk("\n");
415 }
416 #endif
417
418 static void rx_dma_buf_check(pc300_t * card, int ch)
419 {
420 volatile pcsca_bd_t __iomem *ptdescr;
421 int i;
422 ucshort first_bd = card->chan[ch].rx_first_bd;
423 ucshort last_bd = card->chan[ch].rx_last_bd;
424 int ch_factor;
425
426 ch_factor = ch * N_DMA_RX_BUF;
427 printk("#CH%d: f_bd = %d, l_bd = %d\n", ch, first_bd, last_bd);
428 for (i = 0, ptdescr = (card->hw.rambase +
429 DMA_RX_BD_BASE + ch_factor * sizeof(pcsca_bd_t));
430 i < N_DMA_RX_BUF; i++, ptdescr++) {
431 if (cpc_readb(&ptdescr->status) & DST_OSB)
432 printk ("\n CH%d RX%d: next=0x%x, ptbuf=0x%x, ST=0x%x, len=%d",
433 ch, i, cpc_readl(&ptdescr->next),
434 cpc_readl(&ptdescr->ptbuf),
435 cpc_readb(&ptdescr->status),
436 cpc_readw(&ptdescr->len));
437 }
438 printk("\n");
439 }
440
441 static int dma_get_rx_frame_size(pc300_t * card, int ch)
442 {
443 volatile pcsca_bd_t __iomem *ptdescr;
444 ucshort first_bd = card->chan[ch].rx_first_bd;
445 int rcvd = 0;
446 volatile ucchar status;
447
448 ptdescr = (card->hw.rambase + RX_BD_ADDR(ch, first_bd));
449 while ((status = cpc_readb(&ptdescr->status)) & DST_OSB) {
450 rcvd += cpc_readw(&ptdescr->len);
451 first_bd = (first_bd + 1) & (N_DMA_RX_BUF - 1);
452 if ((status & DST_EOM) || (first_bd == card->chan[ch].rx_last_bd)) {
453 /* Return the size of a good frame or incomplete bad frame
454 * (dma_buf_read will clean the buffer descriptors in this case). */
455 return (rcvd);
456 }
457 ptdescr = (card->hw.rambase + cpc_readl(&ptdescr->next));
458 }
459 return (-1);
460 }
461
462 /*
463 * dma_buf_write: writes a frame to the Tx DMA buffers
464 * NOTE: this function writes one frame at a time.
465 */
466 static int dma_buf_write(pc300_t * card, int ch, ucchar * ptdata, int len)
467 {
468 int i, nchar;
469 volatile pcsca_bd_t __iomem *ptdescr;
470 int tosend = len;
471 ucchar nbuf = ((len - 1) / BD_DEF_LEN) + 1;
472
473 if (nbuf >= card->chan[ch].nfree_tx_bd) {
474 return -ENOMEM;
475 }
476
477 for (i = 0; i < nbuf; i++) {
478 ptdescr = (card->hw.rambase +
479 TX_BD_ADDR(ch, card->chan[ch].tx_next_bd));
480 nchar = cpc_min(BD_DEF_LEN, tosend);
481 if (cpc_readb(&ptdescr->status) & DST_OSB) {
482 memcpy_toio((card->hw.rambase + cpc_readl(&ptdescr->ptbuf)),
483 &ptdata[len - tosend], nchar);
484 cpc_writew(&ptdescr->len, nchar);
485 card->chan[ch].nfree_tx_bd--;
486 if ((i + 1) == nbuf) {
487 /* This must be the last BD to be used */
488 cpc_writeb(&ptdescr->status, DST_EOM);
489 } else {
490 cpc_writeb(&ptdescr->status, 0);
491 }
492 } else {
493 return -ENOMEM;
494 }
495 tosend -= nchar;
496 card->chan[ch].tx_next_bd =
497 (card->chan[ch].tx_next_bd + 1) & (N_DMA_TX_BUF - 1);
498 }
499 /* If it gets to here, it means we have sent the whole frame */
500 return 0;
501 }
502
503 /*
504 * dma_buf_read: reads a frame from the Rx DMA buffers
505 * NOTE: this function reads one frame at a time.
506 */
507 static int dma_buf_read(pc300_t * card, int ch, struct sk_buff *skb)
508 {
509 int nchar;
510 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
511 volatile pcsca_bd_t __iomem *ptdescr;
512 int rcvd = 0;
513 volatile ucchar status;
514
515 ptdescr = (card->hw.rambase +
516 RX_BD_ADDR(ch, chan->rx_first_bd));
517 while ((status = cpc_readb(&ptdescr->status)) & DST_OSB) {
518 nchar = cpc_readw(&ptdescr->len);
519 if ((status & (DST_OVR | DST_CRC | DST_RBIT | DST_SHRT | DST_ABT))
520 || (nchar > BD_DEF_LEN)) {
521
522 if (nchar > BD_DEF_LEN)
523 status |= DST_RBIT;
524 rcvd = -status;
525 /* Discard remaining descriptors used by the bad frame */
526 while (chan->rx_first_bd != chan->rx_last_bd) {
527 cpc_writeb(&ptdescr->status, 0);
528 chan->rx_first_bd = (chan->rx_first_bd+1) & (N_DMA_RX_BUF-1);
529 if (status & DST_EOM)
530 break;
531 ptdescr = (card->hw.rambase +
532 cpc_readl(&ptdescr->next));
533 status = cpc_readb(&ptdescr->status);
534 }
535 break;
536 }
537 if (nchar != 0) {
538 if (skb) {
539 memcpy_fromio(skb_put(skb, nchar),
540 (card->hw.rambase+cpc_readl(&ptdescr->ptbuf)),nchar);
541 }
542 rcvd += nchar;
543 }
544 cpc_writeb(&ptdescr->status, 0);
545 cpc_writeb(&ptdescr->len, 0);
546 chan->rx_first_bd = (chan->rx_first_bd + 1) & (N_DMA_RX_BUF - 1);
547
548 if (status & DST_EOM)
549 break;
550
551 ptdescr = (card->hw.rambase + cpc_readl(&ptdescr->next));
552 }
553
554 if (rcvd != 0) {
555 /* Update pointer */
556 chan->rx_last_bd = (chan->rx_first_bd - 1) & (N_DMA_RX_BUF - 1);
557 /* Update EDA */
558 cpc_writel(card->hw.scabase + DRX_REG(EDAL, ch),
559 RX_BD_ADDR(ch, chan->rx_last_bd));
560 }
561 return (rcvd);
562 }
563
564 static void tx_dma_stop(pc300_t * card, int ch)
565 {
566 void __iomem *scabase = card->hw.scabase;
567 ucchar drr_ena_bit = 1 << (5 + 2 * ch);
568 ucchar drr_rst_bit = 1 << (1 + 2 * ch);
569
570 /* Disable DMA */
571 cpc_writeb(scabase + DRR, drr_ena_bit);
572 cpc_writeb(scabase + DRR, drr_rst_bit & ~drr_ena_bit);
573 }
574
575 static void rx_dma_stop(pc300_t * card, int ch)
576 {
577 void __iomem *scabase = card->hw.scabase;
578 ucchar drr_ena_bit = 1 << (4 + 2 * ch);
579 ucchar drr_rst_bit = 1 << (2 * ch);
580
581 /* Disable DMA */
582 cpc_writeb(scabase + DRR, drr_ena_bit);
583 cpc_writeb(scabase + DRR, drr_rst_bit & ~drr_ena_bit);
584 }
585
586 static void rx_dma_start(pc300_t * card, int ch)
587 {
588 void __iomem *scabase = card->hw.scabase;
589 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
590
591 /* Start DMA */
592 cpc_writel(scabase + DRX_REG(CDAL, ch),
593 RX_BD_ADDR(ch, chan->rx_first_bd));
594 if (cpc_readl(scabase + DRX_REG(CDAL,ch)) !=
595 RX_BD_ADDR(ch, chan->rx_first_bd)) {
596 cpc_writel(scabase + DRX_REG(CDAL, ch),
597 RX_BD_ADDR(ch, chan->rx_first_bd));
598 }
599 cpc_writel(scabase + DRX_REG(EDAL, ch),
600 RX_BD_ADDR(ch, chan->rx_last_bd));
601 cpc_writew(scabase + DRX_REG(BFLL, ch), BD_DEF_LEN);
602 cpc_writeb(scabase + DSR_RX(ch), DSR_DE);
603 if (!(cpc_readb(scabase + DSR_RX(ch)) & DSR_DE)) {
604 cpc_writeb(scabase + DSR_RX(ch), DSR_DE);
605 }
606 }
607
608 /*************************/
609 /*** FALC Routines ***/
610 /*************************/
611 static void falc_issue_cmd(pc300_t * card, int ch, ucchar cmd)
612 {
613 void __iomem *falcbase = card->hw.falcbase;
614 unsigned long i = 0;
615
616 while (cpc_readb(falcbase + F_REG(SIS, ch)) & SIS_CEC) {
617 if (i++ >= PC300_FALC_MAXLOOP) {
618 printk("%s: FALC command locked(cmd=0x%x).\n",
619 card->chan[ch].d.name, cmd);
620 break;
621 }
622 }
623 cpc_writeb(falcbase + F_REG(CMDR, ch), cmd);
624 }
625
626 static void falc_intr_enable(pc300_t * card, int ch)
627 {
628 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
629 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
630 falc_t *pfalc = (falc_t *) & chan->falc;
631 void __iomem *falcbase = card->hw.falcbase;
632
633 /* Interrupt pins are open-drain */
634 cpc_writeb(falcbase + F_REG(IPC, ch),
635 cpc_readb(falcbase + F_REG(IPC, ch)) & ~IPC_IC0);
636 /* Conters updated each second */
637 cpc_writeb(falcbase + F_REG(FMR1, ch),
638 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_ECM);
639 /* Enable SEC and ES interrupts */
640 cpc_writeb(falcbase + F_REG(IMR3, ch),
641 cpc_readb(falcbase + F_REG(IMR3, ch)) & ~(IMR3_SEC | IMR3_ES));
642 if (conf->fr_mode == PC300_FR_UNFRAMED) {
643 cpc_writeb(falcbase + F_REG(IMR4, ch),
644 cpc_readb(falcbase + F_REG(IMR4, ch)) & ~(IMR4_LOS));
645 } else {
646 cpc_writeb(falcbase + F_REG(IMR4, ch),
647 cpc_readb(falcbase + F_REG(IMR4, ch)) &
648 ~(IMR4_LFA | IMR4_AIS | IMR4_LOS | IMR4_SLIP));
649 }
650 if (conf->media == IF_IFACE_T1) {
651 cpc_writeb(falcbase + F_REG(IMR3, ch),
652 cpc_readb(falcbase + F_REG(IMR3, ch)) & ~IMR3_LLBSC);
653 } else {
654 cpc_writeb(falcbase + F_REG(IPC, ch),
655 cpc_readb(falcbase + F_REG(IPC, ch)) | IPC_SCI);
656 if (conf->fr_mode == PC300_FR_UNFRAMED) {
657 cpc_writeb(falcbase + F_REG(IMR2, ch),
658 cpc_readb(falcbase + F_REG(IMR2, ch)) & ~(IMR2_LOS));
659 } else {
660 cpc_writeb(falcbase + F_REG(IMR2, ch),
661 cpc_readb(falcbase + F_REG(IMR2, ch)) &
662 ~(IMR2_FAR | IMR2_LFA | IMR2_AIS | IMR2_LOS));
663 if (pfalc->multiframe_mode) {
664 cpc_writeb(falcbase + F_REG(IMR2, ch),
665 cpc_readb(falcbase + F_REG(IMR2, ch)) &
666 ~(IMR2_T400MS | IMR2_MFAR));
667 } else {
668 cpc_writeb(falcbase + F_REG(IMR2, ch),
669 cpc_readb(falcbase + F_REG(IMR2, ch)) |
670 IMR2_T400MS | IMR2_MFAR);
671 }
672 }
673 }
674 }
675
676 static void falc_open_timeslot(pc300_t * card, int ch, int timeslot)
677 {
678 void __iomem *falcbase = card->hw.falcbase;
679 ucchar tshf = card->chan[ch].falc.offset;
680
681 cpc_writeb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch),
682 cpc_readb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch)) &
683 ~(0x80 >> ((timeslot - tshf) & 0x07)));
684 cpc_writeb(falcbase + F_REG((TTR1 + timeslot / 8), ch),
685 cpc_readb(falcbase + F_REG((TTR1 + timeslot / 8), ch)) |
686 (0x80 >> (timeslot & 0x07)));
687 cpc_writeb(falcbase + F_REG((RTR1 + timeslot / 8), ch),
688 cpc_readb(falcbase + F_REG((RTR1 + timeslot / 8), ch)) |
689 (0x80 >> (timeslot & 0x07)));
690 }
691
692 static void falc_close_timeslot(pc300_t * card, int ch, int timeslot)
693 {
694 void __iomem *falcbase = card->hw.falcbase;
695 ucchar tshf = card->chan[ch].falc.offset;
696
697 cpc_writeb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch),
698 cpc_readb(falcbase + F_REG((ICB1 + (timeslot - tshf) / 8), ch)) |
699 (0x80 >> ((timeslot - tshf) & 0x07)));
700 cpc_writeb(falcbase + F_REG((TTR1 + timeslot / 8), ch),
701 cpc_readb(falcbase + F_REG((TTR1 + timeslot / 8), ch)) &
702 ~(0x80 >> (timeslot & 0x07)));
703 cpc_writeb(falcbase + F_REG((RTR1 + timeslot / 8), ch),
704 cpc_readb(falcbase + F_REG((RTR1 + timeslot / 8), ch)) &
705 ~(0x80 >> (timeslot & 0x07)));
706 }
707
708 static void falc_close_all_timeslots(pc300_t * card, int ch)
709 {
710 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
711 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
712 void __iomem *falcbase = card->hw.falcbase;
713
714 cpc_writeb(falcbase + F_REG(ICB1, ch), 0xff);
715 cpc_writeb(falcbase + F_REG(TTR1, ch), 0);
716 cpc_writeb(falcbase + F_REG(RTR1, ch), 0);
717 cpc_writeb(falcbase + F_REG(ICB2, ch), 0xff);
718 cpc_writeb(falcbase + F_REG(TTR2, ch), 0);
719 cpc_writeb(falcbase + F_REG(RTR2, ch), 0);
720 cpc_writeb(falcbase + F_REG(ICB3, ch), 0xff);
721 cpc_writeb(falcbase + F_REG(TTR3, ch), 0);
722 cpc_writeb(falcbase + F_REG(RTR3, ch), 0);
723 if (conf->media == IF_IFACE_E1) {
724 cpc_writeb(falcbase + F_REG(ICB4, ch), 0xff);
725 cpc_writeb(falcbase + F_REG(TTR4, ch), 0);
726 cpc_writeb(falcbase + F_REG(RTR4, ch), 0);
727 }
728 }
729
730 static void falc_open_all_timeslots(pc300_t * card, int ch)
731 {
732 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
733 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
734 void __iomem *falcbase = card->hw.falcbase;
735
736 cpc_writeb(falcbase + F_REG(ICB1, ch), 0);
737 if (conf->fr_mode == PC300_FR_UNFRAMED) {
738 cpc_writeb(falcbase + F_REG(TTR1, ch), 0xff);
739 cpc_writeb(falcbase + F_REG(RTR1, ch), 0xff);
740 } else {
741 /* Timeslot 0 is never enabled */
742 cpc_writeb(falcbase + F_REG(TTR1, ch), 0x7f);
743 cpc_writeb(falcbase + F_REG(RTR1, ch), 0x7f);
744 }
745 cpc_writeb(falcbase + F_REG(ICB2, ch), 0);
746 cpc_writeb(falcbase + F_REG(TTR2, ch), 0xff);
747 cpc_writeb(falcbase + F_REG(RTR2, ch), 0xff);
748 cpc_writeb(falcbase + F_REG(ICB3, ch), 0);
749 cpc_writeb(falcbase + F_REG(TTR3, ch), 0xff);
750 cpc_writeb(falcbase + F_REG(RTR3, ch), 0xff);
751 if (conf->media == IF_IFACE_E1) {
752 cpc_writeb(falcbase + F_REG(ICB4, ch), 0);
753 cpc_writeb(falcbase + F_REG(TTR4, ch), 0xff);
754 cpc_writeb(falcbase + F_REG(RTR4, ch), 0xff);
755 } else {
756 cpc_writeb(falcbase + F_REG(ICB4, ch), 0xff);
757 cpc_writeb(falcbase + F_REG(TTR4, ch), 0x80);
758 cpc_writeb(falcbase + F_REG(RTR4, ch), 0x80);
759 }
760 }
761
762 static void falc_init_timeslot(pc300_t * card, int ch)
763 {
764 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
765 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
766 falc_t *pfalc = (falc_t *) & chan->falc;
767 int tslot;
768
769 for (tslot = 0; tslot < pfalc->num_channels; tslot++) {
770 if (conf->tslot_bitmap & (1 << tslot)) {
771 // Channel enabled
772 falc_open_timeslot(card, ch, tslot + 1);
773 } else {
774 // Channel disabled
775 falc_close_timeslot(card, ch, tslot + 1);
776 }
777 }
778 }
779
780 static void falc_enable_comm(pc300_t * card, int ch)
781 {
782 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
783 falc_t *pfalc = (falc_t *) & chan->falc;
784
785 if (pfalc->full_bandwidth) {
786 falc_open_all_timeslots(card, ch);
787 } else {
788 falc_init_timeslot(card, ch);
789 }
790 // CTS/DCD ON
791 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
792 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) &
793 ~((CPLD_REG1_FALC_DCD | CPLD_REG1_FALC_CTS) << (2 * ch)));
794 }
795
796 static void falc_disable_comm(pc300_t * card, int ch)
797 {
798 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
799 falc_t *pfalc = (falc_t *) & chan->falc;
800
801 if (pfalc->loop_active != 2) {
802 falc_close_all_timeslots(card, ch);
803 }
804 // CTS/DCD OFF
805 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
806 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
807 ((CPLD_REG1_FALC_DCD | CPLD_REG1_FALC_CTS) << (2 * ch)));
808 }
809
810 static void falc_init_t1(pc300_t * card, int ch)
811 {
812 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
813 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
814 falc_t *pfalc = (falc_t *) & chan->falc;
815 void __iomem *falcbase = card->hw.falcbase;
816 ucchar dja = (ch ? (LIM2_DJA2 | LIM2_DJA1) : 0);
817
818 /* Switch to T1 mode (PCM 24) */
819 cpc_writeb(falcbase + F_REG(FMR1, ch), FMR1_PMOD);
820
821 /* Wait 20 us for setup */
822 udelay(20);
823
824 /* Transmit Buffer Size (1 frame) */
825 cpc_writeb(falcbase + F_REG(SIC1, ch), SIC1_XBS0);
826
827 /* Clock mode */
828 if (conf->phys_settings.clock_type == CLOCK_INT) { /* Master mode */
829 cpc_writeb(falcbase + F_REG(LIM0, ch),
830 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_MAS);
831 } else { /* Slave mode */
832 cpc_writeb(falcbase + F_REG(LIM0, ch),
833 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_MAS);
834 cpc_writeb(falcbase + F_REG(LOOP, ch),
835 cpc_readb(falcbase + F_REG(LOOP, ch)) & ~LOOP_RTM);
836 }
837
838 cpc_writeb(falcbase + F_REG(IPC, ch), IPC_SCI);
839 cpc_writeb(falcbase + F_REG(FMR0, ch),
840 cpc_readb(falcbase + F_REG(FMR0, ch)) &
841 ~(FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1));
842
843 switch (conf->lcode) {
844 case PC300_LC_AMI:
845 cpc_writeb(falcbase + F_REG(FMR0, ch),
846 cpc_readb(falcbase + F_REG(FMR0, ch)) |
847 FMR0_XC1 | FMR0_RC1);
848 /* Clear Channel register to ON for all channels */
849 cpc_writeb(falcbase + F_REG(CCB1, ch), 0xff);
850 cpc_writeb(falcbase + F_REG(CCB2, ch), 0xff);
851 cpc_writeb(falcbase + F_REG(CCB3, ch), 0xff);
852 break;
853
854 case PC300_LC_B8ZS:
855 cpc_writeb(falcbase + F_REG(FMR0, ch),
856 cpc_readb(falcbase + F_REG(FMR0, ch)) |
857 FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1);
858 break;
859
860 case PC300_LC_NRZ:
861 cpc_writeb(falcbase + F_REG(FMR0, ch),
862 cpc_readb(falcbase + F_REG(FMR0, ch)) | 0x00);
863 break;
864 }
865
866 cpc_writeb(falcbase + F_REG(LIM0, ch),
867 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_ELOS);
868 cpc_writeb(falcbase + F_REG(LIM0, ch),
869 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~(LIM0_SCL1 | LIM0_SCL0));
870 /* Set interface mode to 2 MBPS */
871 cpc_writeb(falcbase + F_REG(FMR1, ch),
872 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_IMOD);
873
874 switch (conf->fr_mode) {
875 case PC300_FR_ESF:
876 pfalc->multiframe_mode = 0;
877 cpc_writeb(falcbase + F_REG(FMR4, ch),
878 cpc_readb(falcbase + F_REG(FMR4, ch)) | FMR4_FM1);
879 cpc_writeb(falcbase + F_REG(FMR1, ch),
880 cpc_readb(falcbase + F_REG(FMR1, ch)) |
881 FMR1_CRC | FMR1_EDL);
882 cpc_writeb(falcbase + F_REG(XDL1, ch), 0);
883 cpc_writeb(falcbase + F_REG(XDL2, ch), 0);
884 cpc_writeb(falcbase + F_REG(XDL3, ch), 0);
885 cpc_writeb(falcbase + F_REG(FMR0, ch),
886 cpc_readb(falcbase + F_REG(FMR0, ch)) & ~FMR0_SRAF);
887 cpc_writeb(falcbase + F_REG(FMR2, ch),
888 cpc_readb(falcbase + F_REG(FMR2,ch)) | FMR2_MCSP | FMR2_SSP);
889 break;
890
891 case PC300_FR_D4:
892 pfalc->multiframe_mode = 1;
893 cpc_writeb(falcbase + F_REG(FMR4, ch),
894 cpc_readb(falcbase + F_REG(FMR4, ch)) &
895 ~(FMR4_FM1 | FMR4_FM0));
896 cpc_writeb(falcbase + F_REG(FMR0, ch),
897 cpc_readb(falcbase + F_REG(FMR0, ch)) | FMR0_SRAF);
898 cpc_writeb(falcbase + F_REG(FMR2, ch),
899 cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_SSP);
900 break;
901 }
902
903 /* Enable Automatic Resynchronization */
904 cpc_writeb(falcbase + F_REG(FMR4, ch),
905 cpc_readb(falcbase + F_REG(FMR4, ch)) | FMR4_AUTO);
906
907 /* Transmit Automatic Remote Alarm */
908 cpc_writeb(falcbase + F_REG(FMR2, ch),
909 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_AXRA);
910
911 /* Channel translation mode 1 : one to one */
912 cpc_writeb(falcbase + F_REG(FMR1, ch),
913 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_CTM);
914
915 /* No signaling */
916 cpc_writeb(falcbase + F_REG(FMR1, ch),
917 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_SIGM);
918 cpc_writeb(falcbase + F_REG(FMR5, ch),
919 cpc_readb(falcbase + F_REG(FMR5, ch)) &
920 ~(FMR5_EIBR | FMR5_SRS));
921 cpc_writeb(falcbase + F_REG(CCR1, ch), 0);
922
923 cpc_writeb(falcbase + F_REG(LIM1, ch),
924 cpc_readb(falcbase + F_REG(LIM1, ch)) | LIM1_RIL0 | LIM1_RIL1);
925
926 switch (conf->lbo) {
927 /* Provides proper Line Build Out */
928 case PC300_LBO_0_DB:
929 cpc_writeb(falcbase + F_REG(LIM2, ch), (LIM2_LOS1 | dja));
930 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x5a);
931 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x8f);
932 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
933 break;
934 case PC300_LBO_7_5_DB:
935 cpc_writeb(falcbase + F_REG(LIM2, ch), (0x40 | LIM2_LOS1 | dja));
936 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x11);
937 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x02);
938 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
939 break;
940 case PC300_LBO_15_DB:
941 cpc_writeb(falcbase + F_REG(LIM2, ch), (0x80 | LIM2_LOS1 | dja));
942 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x8e);
943 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x01);
944 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
945 break;
946 case PC300_LBO_22_5_DB:
947 cpc_writeb(falcbase + F_REG(LIM2, ch), (0xc0 | LIM2_LOS1 | dja));
948 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x09);
949 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x01);
950 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x20);
951 break;
952 }
953
954 /* Transmit Clock-Slot Offset */
955 cpc_writeb(falcbase + F_REG(XC0, ch),
956 cpc_readb(falcbase + F_REG(XC0, ch)) | 0x01);
957 /* Transmit Time-slot Offset */
958 cpc_writeb(falcbase + F_REG(XC1, ch), 0x3e);
959 /* Receive Clock-Slot offset */
960 cpc_writeb(falcbase + F_REG(RC0, ch), 0x05);
961 /* Receive Time-slot offset */
962 cpc_writeb(falcbase + F_REG(RC1, ch), 0x00);
963
964 /* LOS Detection after 176 consecutive 0s */
965 cpc_writeb(falcbase + F_REG(PCDR, ch), 0x0a);
966 /* LOS Recovery after 22 ones in the time window of PCD */
967 cpc_writeb(falcbase + F_REG(PCRR, ch), 0x15);
968
969 cpc_writeb(falcbase + F_REG(IDLE, ch), 0x7f);
970
971 if (conf->fr_mode == PC300_FR_ESF_JAPAN) {
972 cpc_writeb(falcbase + F_REG(RC1, ch),
973 cpc_readb(falcbase + F_REG(RC1, ch)) | 0x80);
974 }
975
976 falc_close_all_timeslots(card, ch);
977 }
978
979 static void falc_init_e1(pc300_t * card, int ch)
980 {
981 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
982 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
983 falc_t *pfalc = (falc_t *) & chan->falc;
984 void __iomem *falcbase = card->hw.falcbase;
985 ucchar dja = (ch ? (LIM2_DJA2 | LIM2_DJA1) : 0);
986
987 /* Switch to E1 mode (PCM 30) */
988 cpc_writeb(falcbase + F_REG(FMR1, ch),
989 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_PMOD);
990
991 /* Clock mode */
992 if (conf->phys_settings.clock_type == CLOCK_INT) { /* Master mode */
993 cpc_writeb(falcbase + F_REG(LIM0, ch),
994 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_MAS);
995 } else { /* Slave mode */
996 cpc_writeb(falcbase + F_REG(LIM0, ch),
997 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_MAS);
998 }
999 cpc_writeb(falcbase + F_REG(LOOP, ch),
1000 cpc_readb(falcbase + F_REG(LOOP, ch)) & ~LOOP_SFM);
1001
1002 cpc_writeb(falcbase + F_REG(IPC, ch), IPC_SCI);
1003 cpc_writeb(falcbase + F_REG(FMR0, ch),
1004 cpc_readb(falcbase + F_REG(FMR0, ch)) &
1005 ~(FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1));
1006
1007 switch (conf->lcode) {
1008 case PC300_LC_AMI:
1009 cpc_writeb(falcbase + F_REG(FMR0, ch),
1010 cpc_readb(falcbase + F_REG(FMR0, ch)) |
1011 FMR0_XC1 | FMR0_RC1);
1012 break;
1013
1014 case PC300_LC_HDB3:
1015 cpc_writeb(falcbase + F_REG(FMR0, ch),
1016 cpc_readb(falcbase + F_REG(FMR0, ch)) |
1017 FMR0_XC0 | FMR0_XC1 | FMR0_RC0 | FMR0_RC1);
1018 break;
1019
1020 case PC300_LC_NRZ:
1021 break;
1022 }
1023
1024 cpc_writeb(falcbase + F_REG(LIM0, ch),
1025 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~(LIM0_SCL1 | LIM0_SCL0));
1026 /* Set interface mode to 2 MBPS */
1027 cpc_writeb(falcbase + F_REG(FMR1, ch),
1028 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_IMOD);
1029
1030 cpc_writeb(falcbase + F_REG(XPM0, ch), 0x18);
1031 cpc_writeb(falcbase + F_REG(XPM1, ch), 0x03);
1032 cpc_writeb(falcbase + F_REG(XPM2, ch), 0x00);
1033
1034 switch (conf->fr_mode) {
1035 case PC300_FR_MF_CRC4:
1036 pfalc->multiframe_mode = 1;
1037 cpc_writeb(falcbase + F_REG(FMR1, ch),
1038 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_XFS);
1039 cpc_writeb(falcbase + F_REG(FMR2, ch),
1040 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_RFS1);
1041 cpc_writeb(falcbase + F_REG(FMR2, ch),
1042 cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_RFS0);
1043 cpc_writeb(falcbase + F_REG(FMR3, ch),
1044 cpc_readb(falcbase + F_REG(FMR3, ch)) & ~FMR3_EXTIW);
1045
1046 /* MultiFrame Resynchronization */
1047 cpc_writeb(falcbase + F_REG(FMR1, ch),
1048 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_MFCS);
1049
1050 /* Automatic Loss of Multiframe > 914 CRC errors */
1051 cpc_writeb(falcbase + F_REG(FMR2, ch),
1052 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_ALMF);
1053
1054 /* S1 and SI1/SI2 spare Bits set to 1 */
1055 cpc_writeb(falcbase + F_REG(XSP, ch),
1056 cpc_readb(falcbase + F_REG(XSP, ch)) & ~XSP_AXS);
1057 cpc_writeb(falcbase + F_REG(XSP, ch),
1058 cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_EBP);
1059 cpc_writeb(falcbase + F_REG(XSP, ch),
1060 cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_XS13 | XSP_XS15);
1061
1062 /* Automatic Force Resynchronization */
1063 cpc_writeb(falcbase + F_REG(FMR1, ch),
1064 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_AFR);
1065
1066 /* Transmit Automatic Remote Alarm */
1067 cpc_writeb(falcbase + F_REG(FMR2, ch),
1068 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_AXRA);
1069
1070 /* Transmit Spare Bits for National Use (Y, Sn, Sa) */
1071 cpc_writeb(falcbase + F_REG(XSW, ch),
1072 cpc_readb(falcbase + F_REG(XSW, ch)) |
1073 XSW_XY0 | XSW_XY1 | XSW_XY2 | XSW_XY3 | XSW_XY4);
1074 break;
1075
1076 case PC300_FR_MF_NON_CRC4:
1077 case PC300_FR_D4:
1078 pfalc->multiframe_mode = 0;
1079 cpc_writeb(falcbase + F_REG(FMR1, ch),
1080 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_XFS);
1081 cpc_writeb(falcbase + F_REG(FMR2, ch),
1082 cpc_readb(falcbase + F_REG(FMR2, ch)) &
1083 ~(FMR2_RFS1 | FMR2_RFS0));
1084 cpc_writeb(falcbase + F_REG(XSW, ch),
1085 cpc_readb(falcbase + F_REG(XSW, ch)) | XSW_XSIS);
1086 cpc_writeb(falcbase + F_REG(XSP, ch),
1087 cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_XSIF);
1088
1089 /* Automatic Force Resynchronization */
1090 cpc_writeb(falcbase + F_REG(FMR1, ch),
1091 cpc_readb(falcbase + F_REG(FMR1, ch)) | FMR1_AFR);
1092
1093 /* Transmit Automatic Remote Alarm */
1094 cpc_writeb(falcbase + F_REG(FMR2, ch),
1095 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_AXRA);
1096
1097 /* Transmit Spare Bits for National Use (Y, Sn, Sa) */
1098 cpc_writeb(falcbase + F_REG(XSW, ch),
1099 cpc_readb(falcbase + F_REG(XSW, ch)) |
1100 XSW_XY0 | XSW_XY1 | XSW_XY2 | XSW_XY3 | XSW_XY4);
1101 break;
1102
1103 case PC300_FR_UNFRAMED:
1104 pfalc->multiframe_mode = 0;
1105 cpc_writeb(falcbase + F_REG(FMR1, ch),
1106 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_XFS);
1107 cpc_writeb(falcbase + F_REG(FMR2, ch),
1108 cpc_readb(falcbase + F_REG(FMR2, ch)) &
1109 ~(FMR2_RFS1 | FMR2_RFS0));
1110 cpc_writeb(falcbase + F_REG(XSP, ch),
1111 cpc_readb(falcbase + F_REG(XSP, ch)) | XSP_TT0);
1112 cpc_writeb(falcbase + F_REG(XSW, ch),
1113 cpc_readb(falcbase + F_REG(XSW, ch)) &
1114 ~(XSW_XTM|XSW_XY0|XSW_XY1|XSW_XY2|XSW_XY3|XSW_XY4));
1115 cpc_writeb(falcbase + F_REG(TSWM, ch), 0xff);
1116 cpc_writeb(falcbase + F_REG(FMR2, ch),
1117 cpc_readb(falcbase + F_REG(FMR2, ch)) |
1118 (FMR2_RTM | FMR2_DAIS));
1119 cpc_writeb(falcbase + F_REG(FMR2, ch),
1120 cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_AXRA);
1121 cpc_writeb(falcbase + F_REG(FMR1, ch),
1122 cpc_readb(falcbase + F_REG(FMR1, ch)) & ~FMR1_AFR);
1123 pfalc->sync = 1;
1124 cpc_writeb(falcbase + card->hw.cpld_reg2,
1125 cpc_readb(falcbase + card->hw.cpld_reg2) |
1126 (CPLD_REG2_FALC_LED2 << (2 * ch)));
1127 break;
1128 }
1129
1130 /* No signaling */
1131 cpc_writeb(falcbase + F_REG(XSP, ch),
1132 cpc_readb(falcbase + F_REG(XSP, ch)) & ~XSP_CASEN);
1133 cpc_writeb(falcbase + F_REG(CCR1, ch), 0);
1134
1135 cpc_writeb(falcbase + F_REG(LIM1, ch),
1136 cpc_readb(falcbase + F_REG(LIM1, ch)) | LIM1_RIL0 | LIM1_RIL1);
1137 cpc_writeb(falcbase + F_REG(LIM2, ch), (LIM2_LOS1 | dja));
1138
1139 /* Transmit Clock-Slot Offset */
1140 cpc_writeb(falcbase + F_REG(XC0, ch),
1141 cpc_readb(falcbase + F_REG(XC0, ch)) | 0x01);
1142 /* Transmit Time-slot Offset */
1143 cpc_writeb(falcbase + F_REG(XC1, ch), 0x3e);
1144 /* Receive Clock-Slot offset */
1145 cpc_writeb(falcbase + F_REG(RC0, ch), 0x05);
1146 /* Receive Time-slot offset */
1147 cpc_writeb(falcbase + F_REG(RC1, ch), 0x00);
1148
1149 /* LOS Detection after 176 consecutive 0s */
1150 cpc_writeb(falcbase + F_REG(PCDR, ch), 0x0a);
1151 /* LOS Recovery after 22 ones in the time window of PCD */
1152 cpc_writeb(falcbase + F_REG(PCRR, ch), 0x15);
1153
1154 cpc_writeb(falcbase + F_REG(IDLE, ch), 0x7f);
1155
1156 falc_close_all_timeslots(card, ch);
1157 }
1158
1159 static void falc_init_hdlc(pc300_t * card, int ch)
1160 {
1161 void __iomem *falcbase = card->hw.falcbase;
1162 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1163 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1164
1165 /* Enable transparent data transfer */
1166 if (conf->fr_mode == PC300_FR_UNFRAMED) {
1167 cpc_writeb(falcbase + F_REG(MODE, ch), 0);
1168 } else {
1169 cpc_writeb(falcbase + F_REG(MODE, ch),
1170 cpc_readb(falcbase + F_REG(MODE, ch)) |
1171 (MODE_HRAC | MODE_MDS2));
1172 cpc_writeb(falcbase + F_REG(RAH2, ch), 0xff);
1173 cpc_writeb(falcbase + F_REG(RAH1, ch), 0xff);
1174 cpc_writeb(falcbase + F_REG(RAL2, ch), 0xff);
1175 cpc_writeb(falcbase + F_REG(RAL1, ch), 0xff);
1176 }
1177
1178 /* Tx/Rx reset */
1179 falc_issue_cmd(card, ch, CMDR_RRES | CMDR_XRES | CMDR_SRES);
1180
1181 /* Enable interrupt sources */
1182 falc_intr_enable(card, ch);
1183 }
1184
1185 static void te_config(pc300_t * card, int ch)
1186 {
1187 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1188 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1189 falc_t *pfalc = (falc_t *) & chan->falc;
1190 void __iomem *falcbase = card->hw.falcbase;
1191 ucchar dummy;
1192 unsigned long flags;
1193
1194 memset(pfalc, 0, sizeof(falc_t));
1195 switch (conf->media) {
1196 case IF_IFACE_T1:
1197 pfalc->num_channels = NUM_OF_T1_CHANNELS;
1198 pfalc->offset = 1;
1199 break;
1200 case IF_IFACE_E1:
1201 pfalc->num_channels = NUM_OF_E1_CHANNELS;
1202 pfalc->offset = 0;
1203 break;
1204 }
1205 if (conf->tslot_bitmap == 0xffffffffUL)
1206 pfalc->full_bandwidth = 1;
1207 else
1208 pfalc->full_bandwidth = 0;
1209
1210 CPC_LOCK(card, flags);
1211 /* Reset the FALC chip */
1212 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
1213 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
1214 (CPLD_REG1_FALC_RESET << (2 * ch)));
1215 udelay(10000);
1216 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
1217 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) &
1218 ~(CPLD_REG1_FALC_RESET << (2 * ch)));
1219
1220 if (conf->media == IF_IFACE_T1) {
1221 falc_init_t1(card, ch);
1222 } else {
1223 falc_init_e1(card, ch);
1224 }
1225 falc_init_hdlc(card, ch);
1226 if (conf->rx_sens == PC300_RX_SENS_SH) {
1227 cpc_writeb(falcbase + F_REG(LIM0, ch),
1228 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_EQON);
1229 } else {
1230 cpc_writeb(falcbase + F_REG(LIM0, ch),
1231 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_EQON);
1232 }
1233 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
1234 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) |
1235 ((CPLD_REG2_FALC_TX_CLK | CPLD_REG2_FALC_RX_CLK) << (2 * ch)));
1236
1237 /* Clear all interrupt registers */
1238 dummy = cpc_readb(falcbase + F_REG(FISR0, ch)) +
1239 cpc_readb(falcbase + F_REG(FISR1, ch)) +
1240 cpc_readb(falcbase + F_REG(FISR2, ch)) +
1241 cpc_readb(falcbase + F_REG(FISR3, ch));
1242 CPC_UNLOCK(card, flags);
1243 }
1244
1245 static void falc_check_status(pc300_t * card, int ch, unsigned char frs0)
1246 {
1247 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1248 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1249 falc_t *pfalc = (falc_t *) & chan->falc;
1250 void __iomem *falcbase = card->hw.falcbase;
1251
1252 /* Verify LOS */
1253 if (frs0 & FRS0_LOS) {
1254 if (!pfalc->red_alarm) {
1255 pfalc->red_alarm = 1;
1256 pfalc->los++;
1257 if (!pfalc->blue_alarm) {
1258 // EVENT_FALC_ABNORMAL
1259 if (conf->media == IF_IFACE_T1) {
1260 /* Disable this interrupt as it may otherwise interfere
1261 * with other working boards. */
1262 cpc_writeb(falcbase + F_REG(IMR0, ch),
1263 cpc_readb(falcbase + F_REG(IMR0, ch))
1264 | IMR0_PDEN);
1265 }
1266 falc_disable_comm(card, ch);
1267 // EVENT_FALC_ABNORMAL
1268 }
1269 }
1270 } else {
1271 if (pfalc->red_alarm) {
1272 pfalc->red_alarm = 0;
1273 pfalc->losr++;
1274 }
1275 }
1276
1277 if (conf->fr_mode != PC300_FR_UNFRAMED) {
1278 /* Verify AIS alarm */
1279 if (frs0 & FRS0_AIS) {
1280 if (!pfalc->blue_alarm) {
1281 pfalc->blue_alarm = 1;
1282 pfalc->ais++;
1283 // EVENT_AIS
1284 if (conf->media == IF_IFACE_T1) {
1285 /* Disable this interrupt as it may otherwise interfere with other working boards. */
1286 cpc_writeb(falcbase + F_REG(IMR0, ch),
1287 cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
1288 }
1289 falc_disable_comm(card, ch);
1290 // EVENT_AIS
1291 }
1292 } else {
1293 pfalc->blue_alarm = 0;
1294 }
1295
1296 /* Verify LFA */
1297 if (frs0 & FRS0_LFA) {
1298 if (!pfalc->loss_fa) {
1299 pfalc->loss_fa = 1;
1300 pfalc->lfa++;
1301 if (!pfalc->blue_alarm && !pfalc->red_alarm) {
1302 // EVENT_FALC_ABNORMAL
1303 if (conf->media == IF_IFACE_T1) {
1304 /* Disable this interrupt as it may otherwise
1305 * interfere with other working boards. */
1306 cpc_writeb(falcbase + F_REG(IMR0, ch),
1307 cpc_readb(falcbase + F_REG(IMR0, ch))
1308 | IMR0_PDEN);
1309 }
1310 falc_disable_comm(card, ch);
1311 // EVENT_FALC_ABNORMAL
1312 }
1313 }
1314 } else {
1315 if (pfalc->loss_fa) {
1316 pfalc->loss_fa = 0;
1317 pfalc->farec++;
1318 }
1319 }
1320
1321 /* Verify LMFA */
1322 if (pfalc->multiframe_mode && (frs0 & FRS0_LMFA)) {
1323 /* D4 or CRC4 frame mode */
1324 if (!pfalc->loss_mfa) {
1325 pfalc->loss_mfa = 1;
1326 pfalc->lmfa++;
1327 if (!pfalc->blue_alarm && !pfalc->red_alarm &&
1328 !pfalc->loss_fa) {
1329 // EVENT_FALC_ABNORMAL
1330 if (conf->media == IF_IFACE_T1) {
1331 /* Disable this interrupt as it may otherwise
1332 * interfere with other working boards. */
1333 cpc_writeb(falcbase + F_REG(IMR0, ch),
1334 cpc_readb(falcbase + F_REG(IMR0, ch))
1335 | IMR0_PDEN);
1336 }
1337 falc_disable_comm(card, ch);
1338 // EVENT_FALC_ABNORMAL
1339 }
1340 }
1341 } else {
1342 pfalc->loss_mfa = 0;
1343 }
1344
1345 /* Verify Remote Alarm */
1346 if (frs0 & FRS0_RRA) {
1347 if (!pfalc->yellow_alarm) {
1348 pfalc->yellow_alarm = 1;
1349 pfalc->rai++;
1350 if (pfalc->sync) {
1351 // EVENT_RAI
1352 falc_disable_comm(card, ch);
1353 // EVENT_RAI
1354 }
1355 }
1356 } else {
1357 pfalc->yellow_alarm = 0;
1358 }
1359 } /* if !PC300_UNFRAMED */
1360
1361 if (pfalc->red_alarm || pfalc->loss_fa ||
1362 pfalc->loss_mfa || pfalc->blue_alarm) {
1363 if (pfalc->sync) {
1364 pfalc->sync = 0;
1365 chan->d.line_off++;
1366 cpc_writeb(falcbase + card->hw.cpld_reg2,
1367 cpc_readb(falcbase + card->hw.cpld_reg2) &
1368 ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
1369 }
1370 } else {
1371 if (!pfalc->sync) {
1372 pfalc->sync = 1;
1373 chan->d.line_on++;
1374 cpc_writeb(falcbase + card->hw.cpld_reg2,
1375 cpc_readb(falcbase + card->hw.cpld_reg2) |
1376 (CPLD_REG2_FALC_LED2 << (2 * ch)));
1377 }
1378 }
1379
1380 if (pfalc->sync && !pfalc->yellow_alarm) {
1381 if (!pfalc->active) {
1382 // EVENT_FALC_NORMAL
1383 if (pfalc->loop_active) {
1384 return;
1385 }
1386 if (conf->media == IF_IFACE_T1) {
1387 cpc_writeb(falcbase + F_REG(IMR0, ch),
1388 cpc_readb(falcbase + F_REG(IMR0, ch)) & ~IMR0_PDEN);
1389 }
1390 falc_enable_comm(card, ch);
1391 // EVENT_FALC_NORMAL
1392 pfalc->active = 1;
1393 }
1394 } else {
1395 if (pfalc->active) {
1396 pfalc->active = 0;
1397 }
1398 }
1399 }
1400
1401 static void falc_update_stats(pc300_t * card, int ch)
1402 {
1403 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1404 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1405 falc_t *pfalc = (falc_t *) & chan->falc;
1406 void __iomem *falcbase = card->hw.falcbase;
1407 ucshort counter;
1408
1409 counter = cpc_readb(falcbase + F_REG(FECL, ch));
1410 counter |= cpc_readb(falcbase + F_REG(FECH, ch)) << 8;
1411 pfalc->fec += counter;
1412
1413 counter = cpc_readb(falcbase + F_REG(CVCL, ch));
1414 counter |= cpc_readb(falcbase + F_REG(CVCH, ch)) << 8;
1415 pfalc->cvc += counter;
1416
1417 counter = cpc_readb(falcbase + F_REG(CECL, ch));
1418 counter |= cpc_readb(falcbase + F_REG(CECH, ch)) << 8;
1419 pfalc->cec += counter;
1420
1421 counter = cpc_readb(falcbase + F_REG(EBCL, ch));
1422 counter |= cpc_readb(falcbase + F_REG(EBCH, ch)) << 8;
1423 pfalc->ebc += counter;
1424
1425 if (cpc_readb(falcbase + F_REG(LCR1, ch)) & LCR1_EPRM) {
1426 mdelay(10);
1427 counter = cpc_readb(falcbase + F_REG(BECL, ch));
1428 counter |= cpc_readb(falcbase + F_REG(BECH, ch)) << 8;
1429 pfalc->bec += counter;
1430
1431 if (((conf->media == IF_IFACE_T1) &&
1432 (cpc_readb(falcbase + F_REG(FRS1, ch)) & FRS1_LLBAD) &&
1433 (!(cpc_readb(falcbase + F_REG(FRS1, ch)) & FRS1_PDEN)))
1434 ||
1435 ((conf->media == IF_IFACE_E1) &&
1436 (cpc_readb(falcbase + F_REG(RSP, ch)) & RSP_LLBAD))) {
1437 pfalc->prbs = 2;
1438 } else {
1439 pfalc->prbs = 1;
1440 }
1441 }
1442 }
1443
1444 /*----------------------------------------------------------------------------
1445 * falc_remote_loop
1446 *----------------------------------------------------------------------------
1447 * Description: In the remote loopback mode the clock and data recovered
1448 * from the line inputs RL1/2 or RDIP/RDIN are routed back
1449 * to the line outputs XL1/2 or XDOP/XDON via the analog
1450 * transmitter. As in normal mode they are processsed by
1451 * the synchronizer and then sent to the system interface.
1452 *----------------------------------------------------------------------------
1453 */
1454 static void falc_remote_loop(pc300_t * card, int ch, int loop_on)
1455 {
1456 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1457 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1458 falc_t *pfalc = (falc_t *) & chan->falc;
1459 void __iomem *falcbase = card->hw.falcbase;
1460
1461 if (loop_on) {
1462 // EVENT_FALC_ABNORMAL
1463 if (conf->media == IF_IFACE_T1) {
1464 /* Disable this interrupt as it may otherwise interfere with
1465 * other working boards. */
1466 cpc_writeb(falcbase + F_REG(IMR0, ch),
1467 cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
1468 }
1469 falc_disable_comm(card, ch);
1470 // EVENT_FALC_ABNORMAL
1471 cpc_writeb(falcbase + F_REG(LIM1, ch),
1472 cpc_readb(falcbase + F_REG(LIM1, ch)) | LIM1_RL);
1473 pfalc->loop_active = 1;
1474 } else {
1475 cpc_writeb(falcbase + F_REG(LIM1, ch),
1476 cpc_readb(falcbase + F_REG(LIM1, ch)) & ~LIM1_RL);
1477 pfalc->sync = 0;
1478 cpc_writeb(falcbase + card->hw.cpld_reg2,
1479 cpc_readb(falcbase + card->hw.cpld_reg2) &
1480 ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
1481 pfalc->active = 0;
1482 falc_issue_cmd(card, ch, CMDR_XRES);
1483 pfalc->loop_active = 0;
1484 }
1485 }
1486
1487 /*----------------------------------------------------------------------------
1488 * falc_local_loop
1489 *----------------------------------------------------------------------------
1490 * Description: The local loopback mode disconnects the receive lines
1491 * RL1/RL2 resp. RDIP/RDIN from the receiver. Instead of the
1492 * signals coming from the line the data provided by system
1493 * interface are routed through the analog receiver back to
1494 * the system interface. The unipolar bit stream will be
1495 * undisturbed transmitted on the line. Receiver and transmitter
1496 * coding must be identical.
1497 *----------------------------------------------------------------------------
1498 */
1499 static void falc_local_loop(pc300_t * card, int ch, int loop_on)
1500 {
1501 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1502 falc_t *pfalc = (falc_t *) & chan->falc;
1503 void __iomem *falcbase = card->hw.falcbase;
1504
1505 if (loop_on) {
1506 cpc_writeb(falcbase + F_REG(LIM0, ch),
1507 cpc_readb(falcbase + F_REG(LIM0, ch)) | LIM0_LL);
1508 pfalc->loop_active = 1;
1509 } else {
1510 cpc_writeb(falcbase + F_REG(LIM0, ch),
1511 cpc_readb(falcbase + F_REG(LIM0, ch)) & ~LIM0_LL);
1512 pfalc->loop_active = 0;
1513 }
1514 }
1515
1516 /*----------------------------------------------------------------------------
1517 * falc_payload_loop
1518 *----------------------------------------------------------------------------
1519 * Description: This routine allows to enable/disable payload loopback.
1520 * When the payload loop is activated, the received 192 bits
1521 * of payload data will be looped back to the transmit
1522 * direction. The framing bits, CRC6 and DL bits are not
1523 * looped. They are originated by the FALC-LH transmitter.
1524 *----------------------------------------------------------------------------
1525 */
1526 static void falc_payload_loop(pc300_t * card, int ch, int loop_on)
1527 {
1528 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1529 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1530 falc_t *pfalc = (falc_t *) & chan->falc;
1531 void __iomem *falcbase = card->hw.falcbase;
1532
1533 if (loop_on) {
1534 // EVENT_FALC_ABNORMAL
1535 if (conf->media == IF_IFACE_T1) {
1536 /* Disable this interrupt as it may otherwise interfere with
1537 * other working boards. */
1538 cpc_writeb(falcbase + F_REG(IMR0, ch),
1539 cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
1540 }
1541 falc_disable_comm(card, ch);
1542 // EVENT_FALC_ABNORMAL
1543 cpc_writeb(falcbase + F_REG(FMR2, ch),
1544 cpc_readb(falcbase + F_REG(FMR2, ch)) | FMR2_PLB);
1545 if (conf->media == IF_IFACE_T1) {
1546 cpc_writeb(falcbase + F_REG(FMR4, ch),
1547 cpc_readb(falcbase + F_REG(FMR4, ch)) | FMR4_TM);
1548 } else {
1549 cpc_writeb(falcbase + F_REG(FMR5, ch),
1550 cpc_readb(falcbase + F_REG(FMR5, ch)) | XSP_TT0);
1551 }
1552 falc_open_all_timeslots(card, ch);
1553 pfalc->loop_active = 2;
1554 } else {
1555 cpc_writeb(falcbase + F_REG(FMR2, ch),
1556 cpc_readb(falcbase + F_REG(FMR2, ch)) & ~FMR2_PLB);
1557 if (conf->media == IF_IFACE_T1) {
1558 cpc_writeb(falcbase + F_REG(FMR4, ch),
1559 cpc_readb(falcbase + F_REG(FMR4, ch)) & ~FMR4_TM);
1560 } else {
1561 cpc_writeb(falcbase + F_REG(FMR5, ch),
1562 cpc_readb(falcbase + F_REG(FMR5, ch)) & ~XSP_TT0);
1563 }
1564 pfalc->sync = 0;
1565 cpc_writeb(falcbase + card->hw.cpld_reg2,
1566 cpc_readb(falcbase + card->hw.cpld_reg2) &
1567 ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
1568 pfalc->active = 0;
1569 falc_issue_cmd(card, ch, CMDR_XRES);
1570 pfalc->loop_active = 0;
1571 }
1572 }
1573
1574 /*----------------------------------------------------------------------------
1575 * turn_off_xlu
1576 *----------------------------------------------------------------------------
1577 * Description: Turns XLU bit off in the proper register
1578 *----------------------------------------------------------------------------
1579 */
1580 static void turn_off_xlu(pc300_t * card, int ch)
1581 {
1582 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1583 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1584 void __iomem *falcbase = card->hw.falcbase;
1585
1586 if (conf->media == IF_IFACE_T1) {
1587 cpc_writeb(falcbase + F_REG(FMR5, ch),
1588 cpc_readb(falcbase + F_REG(FMR5, ch)) & ~FMR5_XLU);
1589 } else {
1590 cpc_writeb(falcbase + F_REG(FMR3, ch),
1591 cpc_readb(falcbase + F_REG(FMR3, ch)) & ~FMR3_XLU);
1592 }
1593 }
1594
1595 /*----------------------------------------------------------------------------
1596 * turn_off_xld
1597 *----------------------------------------------------------------------------
1598 * Description: Turns XLD bit off in the proper register
1599 *----------------------------------------------------------------------------
1600 */
1601 static void turn_off_xld(pc300_t * card, int ch)
1602 {
1603 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1604 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1605 void __iomem *falcbase = card->hw.falcbase;
1606
1607 if (conf->media == IF_IFACE_T1) {
1608 cpc_writeb(falcbase + F_REG(FMR5, ch),
1609 cpc_readb(falcbase + F_REG(FMR5, ch)) & ~FMR5_XLD);
1610 } else {
1611 cpc_writeb(falcbase + F_REG(FMR3, ch),
1612 cpc_readb(falcbase + F_REG(FMR3, ch)) & ~FMR3_XLD);
1613 }
1614 }
1615
1616 /*----------------------------------------------------------------------------
1617 * falc_generate_loop_up_code
1618 *----------------------------------------------------------------------------
1619 * Description: This routine writes the proper FALC chip register in order
1620 * to generate a LOOP activation code over a T1/E1 line.
1621 *----------------------------------------------------------------------------
1622 */
1623 static void falc_generate_loop_up_code(pc300_t * card, int ch)
1624 {
1625 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1626 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1627 falc_t *pfalc = (falc_t *) & chan->falc;
1628 void __iomem *falcbase = card->hw.falcbase;
1629
1630 if (conf->media == IF_IFACE_T1) {
1631 cpc_writeb(falcbase + F_REG(FMR5, ch),
1632 cpc_readb(falcbase + F_REG(FMR5, ch)) | FMR5_XLU);
1633 } else {
1634 cpc_writeb(falcbase + F_REG(FMR3, ch),
1635 cpc_readb(falcbase + F_REG(FMR3, ch)) | FMR3_XLU);
1636 }
1637 // EVENT_FALC_ABNORMAL
1638 if (conf->media == IF_IFACE_T1) {
1639 /* Disable this interrupt as it may otherwise interfere with
1640 * other working boards. */
1641 cpc_writeb(falcbase + F_REG(IMR0, ch),
1642 cpc_readb(falcbase + F_REG(IMR0, ch)) | IMR0_PDEN);
1643 }
1644 falc_disable_comm(card, ch);
1645 // EVENT_FALC_ABNORMAL
1646 pfalc->loop_gen = 1;
1647 }
1648
1649 /*----------------------------------------------------------------------------
1650 * falc_generate_loop_down_code
1651 *----------------------------------------------------------------------------
1652 * Description: This routine writes the proper FALC chip register in order
1653 * to generate a LOOP deactivation code over a T1/E1 line.
1654 *----------------------------------------------------------------------------
1655 */
1656 static void falc_generate_loop_down_code(pc300_t * card, int ch)
1657 {
1658 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1659 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1660 falc_t *pfalc = (falc_t *) & chan->falc;
1661 void __iomem *falcbase = card->hw.falcbase;
1662
1663 if (conf->media == IF_IFACE_T1) {
1664 cpc_writeb(falcbase + F_REG(FMR5, ch),
1665 cpc_readb(falcbase + F_REG(FMR5, ch)) | FMR5_XLD);
1666 } else {
1667 cpc_writeb(falcbase + F_REG(FMR3, ch),
1668 cpc_readb(falcbase + F_REG(FMR3, ch)) | FMR3_XLD);
1669 }
1670 pfalc->sync = 0;
1671 cpc_writeb(falcbase + card->hw.cpld_reg2,
1672 cpc_readb(falcbase + card->hw.cpld_reg2) &
1673 ~(CPLD_REG2_FALC_LED2 << (2 * ch)));
1674 pfalc->active = 0;
1675 //? falc_issue_cmd(card, ch, CMDR_XRES);
1676 pfalc->loop_gen = 0;
1677 }
1678
1679 /*----------------------------------------------------------------------------
1680 * falc_pattern_test
1681 *----------------------------------------------------------------------------
1682 * Description: This routine generates a pattern code and checks
1683 * it on the reception side.
1684 *----------------------------------------------------------------------------
1685 */
1686 static void falc_pattern_test(pc300_t * card, int ch, unsigned int activate)
1687 {
1688 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1689 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
1690 falc_t *pfalc = (falc_t *) & chan->falc;
1691 void __iomem *falcbase = card->hw.falcbase;
1692
1693 if (activate) {
1694 pfalc->prbs = 1;
1695 pfalc->bec = 0;
1696 if (conf->media == IF_IFACE_T1) {
1697 /* Disable local loop activation/deactivation detect */
1698 cpc_writeb(falcbase + F_REG(IMR3, ch),
1699 cpc_readb(falcbase + F_REG(IMR3, ch)) | IMR3_LLBSC);
1700 } else {
1701 /* Disable local loop activation/deactivation detect */
1702 cpc_writeb(falcbase + F_REG(IMR1, ch),
1703 cpc_readb(falcbase + F_REG(IMR1, ch)) | IMR1_LLBSC);
1704 }
1705 /* Activates generation and monitoring of PRBS
1706 * (Pseudo Random Bit Sequence) */
1707 cpc_writeb(falcbase + F_REG(LCR1, ch),
1708 cpc_readb(falcbase + F_REG(LCR1, ch)) | LCR1_EPRM | LCR1_XPRBS);
1709 } else {
1710 pfalc->prbs = 0;
1711 /* Deactivates generation and monitoring of PRBS
1712 * (Pseudo Random Bit Sequence) */
1713 cpc_writeb(falcbase + F_REG(LCR1, ch),
1714 cpc_readb(falcbase+F_REG(LCR1,ch)) & ~(LCR1_EPRM | LCR1_XPRBS));
1715 if (conf->media == IF_IFACE_T1) {
1716 /* Enable local loop activation/deactivation detect */
1717 cpc_writeb(falcbase + F_REG(IMR3, ch),
1718 cpc_readb(falcbase + F_REG(IMR3, ch)) & ~IMR3_LLBSC);
1719 } else {
1720 /* Enable local loop activation/deactivation detect */
1721 cpc_writeb(falcbase + F_REG(IMR1, ch),
1722 cpc_readb(falcbase + F_REG(IMR1, ch)) & ~IMR1_LLBSC);
1723 }
1724 }
1725 }
1726
1727 /*----------------------------------------------------------------------------
1728 * falc_pattern_test_error
1729 *----------------------------------------------------------------------------
1730 * Description: This routine returns the bit error counter value
1731 *----------------------------------------------------------------------------
1732 */
1733 static ucshort falc_pattern_test_error(pc300_t * card, int ch)
1734 {
1735 pc300ch_t *chan = (pc300ch_t *) & card->chan[ch];
1736 falc_t *pfalc = (falc_t *) & chan->falc;
1737
1738 return (pfalc->bec);
1739 }
1740
1741 /**********************************/
1742 /*** Net Interface Routines ***/
1743 /**********************************/
1744
1745 static void
1746 cpc_trace(struct net_device *dev, struct sk_buff *skb_main, char rx_tx)
1747 {
1748 struct sk_buff *skb;
1749
1750 if ((skb = dev_alloc_skb(10 + skb_main->len)) == NULL) {
1751 printk("%s: out of memory\n", dev->name);
1752 return;
1753 }
1754 skb_put(skb, 10 + skb_main->len);
1755
1756 skb->dev = dev;
1757 skb->protocol = htons(ETH_P_CUST);
1758 skb_reset_mac_header(skb);
1759 skb->pkt_type = PACKET_HOST;
1760 skb->len = 10 + skb_main->len;
1761
1762 memcpy(skb->data, dev->name, 5);
1763 skb->data[5] = '[';
1764 skb->data[6] = rx_tx;
1765 skb->data[7] = ']';
1766 skb->data[8] = ':';
1767 skb->data[9] = ' ';
1768 memcpy(&skb->data[10], skb_main->data, skb_main->len);
1769
1770 netif_rx(skb);
1771 }
1772
1773 static void cpc_tx_timeout(struct net_device *dev)
1774 {
1775 pc300dev_t *d = (pc300dev_t *) dev->priv;
1776 pc300ch_t *chan = (pc300ch_t *) d->chan;
1777 pc300_t *card = (pc300_t *) chan->card;
1778 struct net_device_stats *stats = hdlc_stats(dev);
1779 int ch = chan->channel;
1780 unsigned long flags;
1781 ucchar ilar;
1782
1783 stats->tx_errors++;
1784 stats->tx_aborted_errors++;
1785 CPC_LOCK(card, flags);
1786 if ((ilar = cpc_readb(card->hw.scabase + ILAR)) != 0) {
1787 printk("%s: ILAR=0x%x\n", dev->name, ilar);
1788 cpc_writeb(card->hw.scabase + ILAR, ilar);
1789 cpc_writeb(card->hw.scabase + DMER, 0x80);
1790 }
1791 if (card->hw.type == PC300_TE) {
1792 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
1793 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
1794 ~(CPLD_REG2_FALC_LED1 << (2 * ch)));
1795 }
1796 dev->trans_start = jiffies;
1797 CPC_UNLOCK(card, flags);
1798 netif_wake_queue(dev);
1799 }
1800
1801 static int cpc_queue_xmit(struct sk_buff *skb, struct net_device *dev)
1802 {
1803 pc300dev_t *d = (pc300dev_t *) dev->priv;
1804 pc300ch_t *chan = (pc300ch_t *) d->chan;
1805 pc300_t *card = (pc300_t *) chan->card;
1806 struct net_device_stats *stats = hdlc_stats(dev);
1807 int ch = chan->channel;
1808 unsigned long flags;
1809 #ifdef PC300_DEBUG_TX
1810 int i;
1811 #endif
1812
1813 if (chan->conf.monitor) {
1814 /* In monitor mode no Tx is done: ignore packet */
1815 dev_kfree_skb(skb);
1816 return 0;
1817 } else if (!netif_carrier_ok(dev)) {
1818 /* DCD must be OFF: drop packet */
1819 dev_kfree_skb(skb);
1820 stats->tx_errors++;
1821 stats->tx_carrier_errors++;
1822 return 0;
1823 } else if (cpc_readb(card->hw.scabase + M_REG(ST3, ch)) & ST3_DCD) {
1824 printk("%s: DCD is OFF. Going administrative down.\n", dev->name);
1825 stats->tx_errors++;
1826 stats->tx_carrier_errors++;
1827 dev_kfree_skb(skb);
1828 netif_carrier_off(dev);
1829 CPC_LOCK(card, flags);
1830 cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_TX_BUF_CLR);
1831 if (card->hw.type == PC300_TE) {
1832 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
1833 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
1834 ~(CPLD_REG2_FALC_LED1 << (2 * ch)));
1835 }
1836 CPC_UNLOCK(card, flags);
1837 netif_wake_queue(dev);
1838 return 0;
1839 }
1840
1841 /* Write buffer to DMA buffers */
1842 if (dma_buf_write(card, ch, (ucchar *) skb->data, skb->len) != 0) {
1843 // printk("%s: write error. Dropping TX packet.\n", dev->name);
1844 netif_stop_queue(dev);
1845 dev_kfree_skb(skb);
1846 stats->tx_errors++;
1847 stats->tx_dropped++;
1848 return 0;
1849 }
1850 #ifdef PC300_DEBUG_TX
1851 printk("%s T:", dev->name);
1852 for (i = 0; i < skb->len; i++)
1853 printk(" %02x", *(skb->data + i));
1854 printk("\n");
1855 #endif
1856
1857 if (d->trace_on) {
1858 cpc_trace(dev, skb, 'T');
1859 }
1860 dev->trans_start = jiffies;
1861
1862 /* Start transmission */
1863 CPC_LOCK(card, flags);
1864 /* verify if it has more than one free descriptor */
1865 if (card->chan[ch].nfree_tx_bd <= 1) {
1866 /* don't have so stop the queue */
1867 netif_stop_queue(dev);
1868 }
1869 cpc_writel(card->hw.scabase + DTX_REG(EDAL, ch),
1870 TX_BD_ADDR(ch, chan->tx_next_bd));
1871 cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_TX_ENA);
1872 cpc_writeb(card->hw.scabase + DSR_TX(ch), DSR_DE);
1873 if (card->hw.type == PC300_TE) {
1874 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
1875 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) |
1876 (CPLD_REG2_FALC_LED1 << (2 * ch)));
1877 }
1878 CPC_UNLOCK(card, flags);
1879 dev_kfree_skb(skb);
1880
1881 return 0;
1882 }
1883
1884 static void cpc_net_rx(struct net_device *dev)
1885 {
1886 pc300dev_t *d = (pc300dev_t *) dev->priv;
1887 pc300ch_t *chan = (pc300ch_t *) d->chan;
1888 pc300_t *card = (pc300_t *) chan->card;
1889 struct net_device_stats *stats = hdlc_stats(dev);
1890 int ch = chan->channel;
1891 #ifdef PC300_DEBUG_RX
1892 int i;
1893 #endif
1894 int rxb;
1895 struct sk_buff *skb;
1896
1897 while (1) {
1898 if ((rxb = dma_get_rx_frame_size(card, ch)) == -1)
1899 return;
1900
1901 if (!netif_carrier_ok(dev)) {
1902 /* DCD must be OFF: drop packet */
1903 printk("%s : DCD is OFF - drop %d rx bytes\n", dev->name, rxb);
1904 skb = NULL;
1905 } else {
1906 if (rxb > (dev->mtu + 40)) { /* add headers */
1907 printk("%s : MTU exceeded %d\n", dev->name, rxb);
1908 skb = NULL;
1909 } else {
1910 skb = dev_alloc_skb(rxb);
1911 if (skb == NULL) {
1912 printk("%s: Memory squeeze!!\n", dev->name);
1913 return;
1914 }
1915 skb->dev = dev;
1916 }
1917 }
1918
1919 if (((rxb = dma_buf_read(card, ch, skb)) <= 0) || (skb == NULL)) {
1920 #ifdef PC300_DEBUG_RX
1921 printk("%s: rxb = %x\n", dev->name, rxb);
1922 #endif
1923 if ((skb == NULL) && (rxb > 0)) {
1924 /* rxb > dev->mtu */
1925 stats->rx_errors++;
1926 stats->rx_length_errors++;
1927 continue;
1928 }
1929
1930 if (rxb < 0) { /* Invalid frame */
1931 rxb = -rxb;
1932 if (rxb & DST_OVR) {
1933 stats->rx_errors++;
1934 stats->rx_fifo_errors++;
1935 }
1936 if (rxb & DST_CRC) {
1937 stats->rx_errors++;
1938 stats->rx_crc_errors++;
1939 }
1940 if (rxb & (DST_RBIT | DST_SHRT | DST_ABT)) {
1941 stats->rx_errors++;
1942 stats->rx_frame_errors++;
1943 }
1944 }
1945 if (skb) {
1946 dev_kfree_skb_irq(skb);
1947 }
1948 continue;
1949 }
1950
1951 stats->rx_bytes += rxb;
1952
1953 #ifdef PC300_DEBUG_RX
1954 printk("%s R:", dev->name);
1955 for (i = 0; i < skb->len; i++)
1956 printk(" %02x", *(skb->data + i));
1957 printk("\n");
1958 #endif
1959 if (d->trace_on) {
1960 cpc_trace(dev, skb, 'R');
1961 }
1962 stats->rx_packets++;
1963 skb->protocol = hdlc_type_trans(skb, dev);
1964 netif_rx(skb);
1965 }
1966 }
1967
1968 /************************************/
1969 /*** PC300 Interrupt Routines ***/
1970 /************************************/
1971 static void sca_tx_intr(pc300dev_t *dev)
1972 {
1973 pc300ch_t *chan = (pc300ch_t *)dev->chan;
1974 pc300_t *card = (pc300_t *)chan->card;
1975 int ch = chan->channel;
1976 volatile pcsca_bd_t __iomem * ptdescr;
1977 struct net_device_stats *stats = hdlc_stats(dev->dev);
1978
1979 /* Clean up descriptors from previous transmission */
1980 ptdescr = (card->hw.rambase +
1981 TX_BD_ADDR(ch,chan->tx_first_bd));
1982 while ((cpc_readl(card->hw.scabase + DTX_REG(CDAL,ch)) !=
1983 TX_BD_ADDR(ch,chan->tx_first_bd)) &&
1984 (cpc_readb(&ptdescr->status) & DST_OSB)) {
1985 stats->tx_packets++;
1986 stats->tx_bytes += cpc_readw(&ptdescr->len);
1987 cpc_writeb(&ptdescr->status, DST_OSB);
1988 cpc_writew(&ptdescr->len, 0);
1989 chan->nfree_tx_bd++;
1990 chan->tx_first_bd = (chan->tx_first_bd + 1) & (N_DMA_TX_BUF - 1);
1991 ptdescr = (card->hw.rambase + TX_BD_ADDR(ch,chan->tx_first_bd));
1992 }
1993
1994 #ifdef CONFIG_PC300_MLPPP
1995 if (chan->conf.proto == PC300_PROTO_MLPPP) {
1996 cpc_tty_trigger_poll(dev);
1997 } else {
1998 #endif
1999 /* Tell the upper layer we are ready to transmit more packets */
2000 netif_wake_queue(dev->dev);
2001 #ifdef CONFIG_PC300_MLPPP
2002 }
2003 #endif
2004 }
2005
2006 static void sca_intr(pc300_t * card)
2007 {
2008 void __iomem *scabase = card->hw.scabase;
2009 volatile uclong status;
2010 int ch;
2011 int intr_count = 0;
2012 unsigned char dsr_rx;
2013
2014 while ((status = cpc_readl(scabase + ISR0)) != 0) {
2015 for (ch = 0; ch < card->hw.nchan; ch++) {
2016 pc300ch_t *chan = &card->chan[ch];
2017 pc300dev_t *d = &chan->d;
2018 struct net_device *dev = d->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(dev)->rx_errors++;
2052 hdlc_stats(dev)->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(dev)->tx_errors++;
2119 hdlc_stats(dev)->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)
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 static 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 static 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 static 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 static int cpc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2535 {
2536 pc300dev_t *d = (pc300dev_t *) dev->priv;
2537 pc300ch_t *chan = (pc300ch_t *) d->chan;
2538 pc300_t *card = (pc300_t *) chan->card;
2539 pc300conf_t conf_aux;
2540 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
2541 int ch = chan->channel;
2542 void __user *arg = ifr->ifr_data;
2543 struct if_settings *settings = &ifr->ifr_settings;
2544 void __iomem *scabase = card->hw.scabase;
2545
2546 if (!capable(CAP_NET_ADMIN))
2547 return -EPERM;
2548
2549 switch (cmd) {
2550 case SIOCGPC300CONF:
2551 #ifdef CONFIG_PC300_MLPPP
2552 if (conf->proto != PC300_PROTO_MLPPP) {
2553 conf->proto = /* FIXME hdlc->proto.id */ 0;
2554 }
2555 #else
2556 conf->proto = /* FIXME hdlc->proto.id */ 0;
2557 #endif
2558 memcpy(&conf_aux.conf, conf, sizeof(pc300chconf_t));
2559 memcpy(&conf_aux.hw, &card->hw, sizeof(pc300hw_t));
2560 if (!arg ||
2561 copy_to_user(arg, &conf_aux, sizeof(pc300conf_t)))
2562 return -EINVAL;
2563 return 0;
2564 case SIOCSPC300CONF:
2565 if (!capable(CAP_NET_ADMIN))
2566 return -EPERM;
2567 if (!arg ||
2568 copy_from_user(&conf_aux.conf, arg, sizeof(pc300chconf_t)))
2569 return -EINVAL;
2570 if (card->hw.cpld_id < 0x02 &&
2571 conf_aux.conf.fr_mode == PC300_FR_UNFRAMED) {
2572 /* CPLD_ID < 0x02 doesn't support Unframed E1 */
2573 return -EINVAL;
2574 }
2575 #ifdef CONFIG_PC300_MLPPP
2576 if (conf_aux.conf.proto == PC300_PROTO_MLPPP) {
2577 if (conf->proto != PC300_PROTO_MLPPP) {
2578 memcpy(conf, &conf_aux.conf, sizeof(pc300chconf_t));
2579 cpc_tty_init(d); /* init TTY driver */
2580 }
2581 } else {
2582 if (conf_aux.conf.proto == 0xffff) {
2583 if (conf->proto == PC300_PROTO_MLPPP){
2584 /* ifdown interface */
2585 cpc_close(dev);
2586 }
2587 } else {
2588 memcpy(conf, &conf_aux.conf, sizeof(pc300chconf_t));
2589 /* FIXME hdlc->proto.id = conf->proto; */
2590 }
2591 }
2592 #else
2593 memcpy(conf, &conf_aux.conf, sizeof(pc300chconf_t));
2594 /* FIXME hdlc->proto.id = conf->proto; */
2595 #endif
2596 return 0;
2597 case SIOCGPC300STATUS:
2598 cpc_sca_status(card, ch);
2599 return 0;
2600 case SIOCGPC300FALCSTATUS:
2601 cpc_falc_status(card, ch);
2602 return 0;
2603
2604 case SIOCGPC300UTILSTATS:
2605 {
2606 if (!arg) { /* clear statistics */
2607 memset(hdlc_stats(dev), 0, sizeof(struct net_device_stats));
2608 if (card->hw.type == PC300_TE) {
2609 memset(&chan->falc, 0, sizeof(falc_t));
2610 }
2611 } else {
2612 pc300stats_t pc300stats;
2613
2614 memset(&pc300stats, 0, sizeof(pc300stats_t));
2615 pc300stats.hw_type = card->hw.type;
2616 pc300stats.line_on = card->chan[ch].d.line_on;
2617 pc300stats.line_off = card->chan[ch].d.line_off;
2618 memcpy(&pc300stats.gen_stats, hdlc_stats(dev),
2619 sizeof(struct net_device_stats));
2620 if (card->hw.type == PC300_TE)
2621 memcpy(&pc300stats.te_stats,&chan->falc,sizeof(falc_t));
2622 if (copy_to_user(arg, &pc300stats, sizeof(pc300stats_t)))
2623 return -EFAULT;
2624 }
2625 return 0;
2626 }
2627
2628 case SIOCGPC300UTILSTATUS:
2629 {
2630 struct pc300status pc300status;
2631
2632 pc300status.hw_type = card->hw.type;
2633 if (card->hw.type == PC300_TE) {
2634 pc300status.te_status.sync = chan->falc.sync;
2635 pc300status.te_status.red_alarm = chan->falc.red_alarm;
2636 pc300status.te_status.blue_alarm = chan->falc.blue_alarm;
2637 pc300status.te_status.loss_fa = chan->falc.loss_fa;
2638 pc300status.te_status.yellow_alarm =chan->falc.yellow_alarm;
2639 pc300status.te_status.loss_mfa = chan->falc.loss_mfa;
2640 pc300status.te_status.prbs = chan->falc.prbs;
2641 } else {
2642 pc300status.gen_status.dcd =
2643 !(cpc_readb (scabase + M_REG(ST3, ch)) & ST3_DCD);
2644 pc300status.gen_status.cts =
2645 !(cpc_readb (scabase + M_REG(ST3, ch)) & ST3_CTS);
2646 pc300status.gen_status.rts =
2647 !(cpc_readb (scabase + M_REG(CTL, ch)) & CTL_RTS);
2648 pc300status.gen_status.dtr =
2649 !(cpc_readb (scabase + M_REG(CTL, ch)) & CTL_DTR);
2650 /* There is no DSR in HD64572 */
2651 }
2652 if (!arg
2653 || copy_to_user(arg, &pc300status, sizeof(pc300status_t)))
2654 return -EINVAL;
2655 return 0;
2656 }
2657
2658 case SIOCSPC300TRACE:
2659 /* Sets/resets a trace_flag for the respective device */
2660 if (!arg || copy_from_user(&d->trace_on, arg,sizeof(unsigned char)))
2661 return -EINVAL;
2662 return 0;
2663
2664 case SIOCSPC300LOOPBACK:
2665 {
2666 struct pc300loopback pc300loop;
2667
2668 /* TE boards only */
2669 if (card->hw.type != PC300_TE)
2670 return -EINVAL;
2671
2672 if (!arg ||
2673 copy_from_user(&pc300loop, arg, sizeof(pc300loopback_t)))
2674 return -EINVAL;
2675 switch (pc300loop.loop_type) {
2676 case PC300LOCLOOP: /* Turn the local loop on/off */
2677 falc_local_loop(card, ch, pc300loop.loop_on);
2678 return 0;
2679
2680 case PC300REMLOOP: /* Turn the remote loop on/off */
2681 falc_remote_loop(card, ch, pc300loop.loop_on);
2682 return 0;
2683
2684 case PC300PAYLOADLOOP: /* Turn the payload loop on/off */
2685 falc_payload_loop(card, ch, pc300loop.loop_on);
2686 return 0;
2687
2688 case PC300GENLOOPUP: /* Generate loop UP */
2689 if (pc300loop.loop_on) {
2690 falc_generate_loop_up_code (card, ch);
2691 } else {
2692 turn_off_xlu(card, ch);
2693 }
2694 return 0;
2695
2696 case PC300GENLOOPDOWN: /* Generate loop DOWN */
2697 if (pc300loop.loop_on) {
2698 falc_generate_loop_down_code (card, ch);
2699 } else {
2700 turn_off_xld(card, ch);
2701 }
2702 return 0;
2703
2704 default:
2705 return -EINVAL;
2706 }
2707 }
2708
2709 case SIOCSPC300PATTERNTEST:
2710 /* Turn the pattern test on/off and show the errors counter */
2711 {
2712 struct pc300patterntst pc300patrntst;
2713
2714 /* TE boards only */
2715 if (card->hw.type != PC300_TE)
2716 return -EINVAL;
2717
2718 if (card->hw.cpld_id < 0x02) {
2719 /* CPLD_ID < 0x02 doesn't support pattern test */
2720 return -EINVAL;
2721 }
2722
2723 if (!arg ||
2724 copy_from_user(&pc300patrntst,arg,sizeof(pc300patterntst_t)))
2725 return -EINVAL;
2726 if (pc300patrntst.patrntst_on == 2) {
2727 if (chan->falc.prbs == 0) {
2728 falc_pattern_test(card, ch, 1);
2729 }
2730 pc300patrntst.num_errors =
2731 falc_pattern_test_error(card, ch);
2732 if (!arg
2733 || copy_to_user(arg, &pc300patrntst,
2734 sizeof (pc300patterntst_t)))
2735 return -EINVAL;
2736 } else {
2737 falc_pattern_test(card, ch, pc300patrntst.patrntst_on);
2738 }
2739 return 0;
2740 }
2741
2742 case SIOCWANDEV:
2743 switch (ifr->ifr_settings.type) {
2744 case IF_GET_IFACE:
2745 {
2746 const size_t size = sizeof(sync_serial_settings);
2747 ifr->ifr_settings.type = conf->media;
2748 if (ifr->ifr_settings.size < size) {
2749 /* data size wanted */
2750 ifr->ifr_settings.size = size;
2751 return -ENOBUFS;
2752 }
2753
2754 if (copy_to_user(settings->ifs_ifsu.sync,
2755 &conf->phys_settings, size)) {
2756 return -EFAULT;
2757 }
2758 return 0;
2759 }
2760
2761 case IF_IFACE_V35:
2762 case IF_IFACE_V24:
2763 case IF_IFACE_X21:
2764 {
2765 const size_t size = sizeof(sync_serial_settings);
2766
2767 if (!capable(CAP_NET_ADMIN)) {
2768 return -EPERM;
2769 }
2770 /* incorrect data len? */
2771 if (ifr->ifr_settings.size != size) {
2772 return -ENOBUFS;
2773 }
2774
2775 if (copy_from_user(&conf->phys_settings,
2776 settings->ifs_ifsu.sync, size)) {
2777 return -EFAULT;
2778 }
2779
2780 if (conf->phys_settings.loopback) {
2781 cpc_writeb(card->hw.scabase + M_REG(MD2, ch),
2782 cpc_readb(card->hw.scabase + M_REG(MD2, ch)) |
2783 MD2_LOOP_MIR);
2784 }
2785 conf->media = ifr->ifr_settings.type;
2786 return 0;
2787 }
2788
2789 case IF_IFACE_T1:
2790 case IF_IFACE_E1:
2791 {
2792 const size_t te_size = sizeof(te1_settings);
2793 const size_t size = sizeof(sync_serial_settings);
2794
2795 if (!capable(CAP_NET_ADMIN)) {
2796 return -EPERM;
2797 }
2798
2799 /* incorrect data len? */
2800 if (ifr->ifr_settings.size != te_size) {
2801 return -ENOBUFS;
2802 }
2803
2804 if (copy_from_user(&conf->phys_settings,
2805 settings->ifs_ifsu.te1, size)) {
2806 return -EFAULT;
2807 }/* Ignoring HDLC slot_map for a while */
2808
2809 if (conf->phys_settings.loopback) {
2810 cpc_writeb(card->hw.scabase + M_REG(MD2, ch),
2811 cpc_readb(card->hw.scabase + M_REG(MD2, ch)) |
2812 MD2_LOOP_MIR);
2813 }
2814 conf->media = ifr->ifr_settings.type;
2815 return 0;
2816 }
2817 default:
2818 return hdlc_ioctl(dev, ifr, cmd);
2819 }
2820
2821 default:
2822 return hdlc_ioctl(dev, ifr, cmd);
2823 }
2824 }
2825
2826 static struct net_device_stats *cpc_get_stats(struct net_device *dev)
2827 {
2828 return hdlc_stats(dev);
2829 }
2830
2831 static int clock_rate_calc(uclong rate, uclong clock, int *br_io)
2832 {
2833 int br, tc;
2834 int br_pwr, error;
2835
2836 if (rate == 0)
2837 return (0);
2838
2839 for (br = 0, br_pwr = 1; br <= 9; br++, br_pwr <<= 1) {
2840 if ((tc = clock / br_pwr / rate) <= 0xff) {
2841 *br_io = br;
2842 break;
2843 }
2844 }
2845
2846 if (tc <= 0xff) {
2847 error = ((rate - (clock / br_pwr / rate)) / rate) * 1000;
2848 /* Errors bigger than +/- 1% won't be tolerated */
2849 if (error < -10 || error > 10)
2850 return (-1);
2851 else
2852 return (tc);
2853 } else {
2854 return (-1);
2855 }
2856 }
2857
2858 static int ch_config(pc300dev_t * d)
2859 {
2860 pc300ch_t *chan = (pc300ch_t *) d->chan;
2861 pc300chconf_t *conf = (pc300chconf_t *) & chan->conf;
2862 pc300_t *card = (pc300_t *) chan->card;
2863 void __iomem *scabase = card->hw.scabase;
2864 void __iomem *plxbase = card->hw.plxbase;
2865 int ch = chan->channel;
2866 uclong clkrate = chan->conf.phys_settings.clock_rate;
2867 uclong clktype = chan->conf.phys_settings.clock_type;
2868 ucshort encoding = chan->conf.proto_settings.encoding;
2869 ucshort parity = chan->conf.proto_settings.parity;
2870 ucchar md0, md2;
2871
2872 /* Reset the channel */
2873 cpc_writeb(scabase + M_REG(CMD, ch), CMD_CH_RST);
2874
2875 /* Configure the SCA registers */
2876 switch (parity) {
2877 case PARITY_NONE:
2878 md0 = MD0_BIT_SYNC;
2879 break;
2880 case PARITY_CRC16_PR0:
2881 md0 = MD0_CRC16_0|MD0_CRCC0|MD0_BIT_SYNC;
2882 break;
2883 case PARITY_CRC16_PR1:
2884 md0 = MD0_CRC16_1|MD0_CRCC0|MD0_BIT_SYNC;
2885 break;
2886 case PARITY_CRC32_PR1_CCITT:
2887 md0 = MD0_CRC32|MD0_CRCC0|MD0_BIT_SYNC;
2888 break;
2889 case PARITY_CRC16_PR1_CCITT:
2890 default:
2891 md0 = MD0_CRC_CCITT|MD0_CRCC0|MD0_BIT_SYNC;
2892 break;
2893 }
2894 switch (encoding) {
2895 case ENCODING_NRZI:
2896 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_NRZI;
2897 break;
2898 case ENCODING_FM_MARK: /* FM1 */
2899 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_FM|MD2_FM1;
2900 break;
2901 case ENCODING_FM_SPACE: /* FM0 */
2902 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_FM|MD2_FM0;
2903 break;
2904 case ENCODING_MANCHESTER: /* It's not working... */
2905 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_FM|MD2_MANCH;
2906 break;
2907 case ENCODING_NRZ:
2908 default:
2909 md2 = MD2_F_DUPLEX|MD2_ADPLL_X8|MD2_NRZ;
2910 break;
2911 }
2912 cpc_writeb(scabase + M_REG(MD0, ch), md0);
2913 cpc_writeb(scabase + M_REG(MD1, ch), 0);
2914 cpc_writeb(scabase + M_REG(MD2, ch), md2);
2915 cpc_writeb(scabase + M_REG(IDL, ch), 0x7e);
2916 cpc_writeb(scabase + M_REG(CTL, ch), CTL_URSKP | CTL_IDLC);
2917
2918 /* Configure HW media */
2919 switch (card->hw.type) {
2920 case PC300_RSV:
2921 if (conf->media == IF_IFACE_V35) {
2922 cpc_writel((plxbase + card->hw.gpioc_reg),
2923 cpc_readl(plxbase + card->hw.gpioc_reg) | PC300_CHMEDIA_MASK(ch));
2924 } else {
2925 cpc_writel((plxbase + card->hw.gpioc_reg),
2926 cpc_readl(plxbase + card->hw.gpioc_reg) & ~PC300_CHMEDIA_MASK(ch));
2927 }
2928 break;
2929
2930 case PC300_X21:
2931 break;
2932
2933 case PC300_TE:
2934 te_config(card, ch);
2935 break;
2936 }
2937
2938 switch (card->hw.type) {
2939 case PC300_RSV:
2940 case PC300_X21:
2941 if (clktype == CLOCK_INT || clktype == CLOCK_TXINT) {
2942 int tmc, br;
2943
2944 /* Calculate the clkrate parameters */
2945 tmc = clock_rate_calc(clkrate, card->hw.clock, &br);
2946 if (tmc < 0)
2947 return -EIO;
2948 cpc_writeb(scabase + M_REG(TMCT, ch), tmc);
2949 cpc_writeb(scabase + M_REG(TXS, ch),
2950 (TXS_DTRXC | TXS_IBRG | br));
2951 if (clktype == CLOCK_INT) {
2952 cpc_writeb(scabase + M_REG(TMCR, ch), tmc);
2953 cpc_writeb(scabase + M_REG(RXS, ch),
2954 (RXS_IBRG | br));
2955 } else {
2956 cpc_writeb(scabase + M_REG(TMCR, ch), 1);
2957 cpc_writeb(scabase + M_REG(RXS, ch), 0);
2958 }
2959 if (card->hw.type == PC300_X21) {
2960 cpc_writeb(scabase + M_REG(GPO, ch), 1);
2961 cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1 | EXS_RES1);
2962 } else {
2963 cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1);
2964 }
2965 } else {
2966 cpc_writeb(scabase + M_REG(TMCT, ch), 1);
2967 if (clktype == CLOCK_EXT) {
2968 cpc_writeb(scabase + M_REG(TXS, ch),
2969 TXS_DTRXC);
2970 } else {
2971 cpc_writeb(scabase + M_REG(TXS, ch),
2972 TXS_DTRXC|TXS_RCLK);
2973 }
2974 cpc_writeb(scabase + M_REG(TMCR, ch), 1);
2975 cpc_writeb(scabase + M_REG(RXS, ch), 0);
2976 if (card->hw.type == PC300_X21) {
2977 cpc_writeb(scabase + M_REG(GPO, ch), 0);
2978 cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1 | EXS_RES1);
2979 } else {
2980 cpc_writeb(scabase + M_REG(EXS, ch), EXS_TES1);
2981 }
2982 }
2983 break;
2984
2985 case PC300_TE:
2986 /* SCA always receives clock from the FALC chip */
2987 cpc_writeb(scabase + M_REG(TMCT, ch), 1);
2988 cpc_writeb(scabase + M_REG(TXS, ch), 0);
2989 cpc_writeb(scabase + M_REG(TMCR, ch), 1);
2990 cpc_writeb(scabase + M_REG(RXS, ch), 0);
2991 cpc_writeb(scabase + M_REG(EXS, ch), 0);
2992 break;
2993 }
2994
2995 /* Enable Interrupts */
2996 cpc_writel(scabase + IER0,
2997 cpc_readl(scabase + IER0) |
2998 IR0_M(IR0_RXINTA, ch) |
2999 IR0_DRX(IR0_EFT | IR0_DMIA | IR0_DMIB, ch) |
3000 IR0_DTX(IR0_EFT | IR0_DMIA | IR0_DMIB, ch));
3001 cpc_writeb(scabase + M_REG(IE0, ch),
3002 cpc_readl(scabase + M_REG(IE0, ch)) | IE0_RXINTA);
3003 cpc_writeb(scabase + M_REG(IE1, ch),
3004 cpc_readl(scabase + M_REG(IE1, ch)) | IE1_CDCD);
3005
3006 return 0;
3007 }
3008
3009 static int rx_config(pc300dev_t * d)
3010 {
3011 pc300ch_t *chan = (pc300ch_t *) d->chan;
3012 pc300_t *card = (pc300_t *) chan->card;
3013 void __iomem *scabase = card->hw.scabase;
3014 int ch = chan->channel;
3015
3016 cpc_writeb(scabase + DSR_RX(ch), 0);
3017
3018 /* General RX settings */
3019 cpc_writeb(scabase + M_REG(RRC, ch), 0);
3020 cpc_writeb(scabase + M_REG(RNR, ch), 16);
3021
3022 /* Enable reception */
3023 cpc_writeb(scabase + M_REG(CMD, ch), CMD_RX_CRC_INIT);
3024 cpc_writeb(scabase + M_REG(CMD, ch), CMD_RX_ENA);
3025
3026 /* Initialize DMA stuff */
3027 chan->rx_first_bd = 0;
3028 chan->rx_last_bd = N_DMA_RX_BUF - 1;
3029 rx_dma_buf_init(card, ch);
3030 cpc_writeb(scabase + DCR_RX(ch), DCR_FCT_CLR);
3031 cpc_writeb(scabase + DMR_RX(ch), (DMR_TMOD | DMR_NF));
3032 cpc_writeb(scabase + DIR_RX(ch), (DIR_EOM | DIR_BOF));
3033
3034 /* Start DMA */
3035 rx_dma_start(card, ch);
3036
3037 return 0;
3038 }
3039
3040 static int tx_config(pc300dev_t * d)
3041 {
3042 pc300ch_t *chan = (pc300ch_t *) d->chan;
3043 pc300_t *card = (pc300_t *) chan->card;
3044 void __iomem *scabase = card->hw.scabase;
3045 int ch = chan->channel;
3046
3047 cpc_writeb(scabase + DSR_TX(ch), 0);
3048
3049 /* General TX settings */
3050 cpc_writeb(scabase + M_REG(TRC0, ch), 0);
3051 cpc_writeb(scabase + M_REG(TFS, ch), 32);
3052 cpc_writeb(scabase + M_REG(TNR0, ch), 20);
3053 cpc_writeb(scabase + M_REG(TNR1, ch), 48);
3054 cpc_writeb(scabase + M_REG(TCR, ch), 8);
3055
3056 /* Enable transmission */
3057 cpc_writeb(scabase + M_REG(CMD, ch), CMD_TX_CRC_INIT);
3058
3059 /* Initialize DMA stuff */
3060 chan->tx_first_bd = 0;
3061 chan->tx_next_bd = 0;
3062 tx_dma_buf_init(card, ch);
3063 cpc_writeb(scabase + DCR_TX(ch), DCR_FCT_CLR);
3064 cpc_writeb(scabase + DMR_TX(ch), (DMR_TMOD | DMR_NF));
3065 cpc_writeb(scabase + DIR_TX(ch), (DIR_EOM | DIR_BOF | DIR_UDRF));
3066 cpc_writel(scabase + DTX_REG(CDAL, ch), TX_BD_ADDR(ch, chan->tx_first_bd));
3067 cpc_writel(scabase + DTX_REG(EDAL, ch), TX_BD_ADDR(ch, chan->tx_next_bd));
3068
3069 return 0;
3070 }
3071
3072 static int cpc_attach(struct net_device *dev, unsigned short encoding,
3073 unsigned short parity)
3074 {
3075 pc300dev_t *d = (pc300dev_t *)dev->priv;
3076 pc300ch_t *chan = (pc300ch_t *)d->chan;
3077 pc300_t *card = (pc300_t *)chan->card;
3078 pc300chconf_t *conf = (pc300chconf_t *)&chan->conf;
3079
3080 if (card->hw.type == PC300_TE) {
3081 if (encoding != ENCODING_NRZ && encoding != ENCODING_NRZI) {
3082 return -EINVAL;
3083 }
3084 } else {
3085 if (encoding != ENCODING_NRZ && encoding != ENCODING_NRZI &&
3086 encoding != ENCODING_FM_MARK && encoding != ENCODING_FM_SPACE) {
3087 /* Driver doesn't support ENCODING_MANCHESTER yet */
3088 return -EINVAL;
3089 }
3090 }
3091
3092 if (parity != PARITY_NONE && parity != PARITY_CRC16_PR0 &&
3093 parity != PARITY_CRC16_PR1 && parity != PARITY_CRC32_PR1_CCITT &&
3094 parity != PARITY_CRC16_PR1_CCITT) {
3095 return -EINVAL;
3096 }
3097
3098 conf->proto_settings.encoding = encoding;
3099 conf->proto_settings.parity = parity;
3100 return 0;
3101 }
3102
3103 static int cpc_opench(pc300dev_t * d)
3104 {
3105 pc300ch_t *chan = (pc300ch_t *) d->chan;
3106 pc300_t *card = (pc300_t *) chan->card;
3107 int ch = chan->channel, rc;
3108 void __iomem *scabase = card->hw.scabase;
3109
3110 rc = ch_config(d);
3111 if (rc)
3112 return rc;
3113
3114 rx_config(d);
3115
3116 tx_config(d);
3117
3118 /* Assert RTS and DTR */
3119 cpc_writeb(scabase + M_REG(CTL, ch),
3120 cpc_readb(scabase + M_REG(CTL, ch)) & ~(CTL_RTS | CTL_DTR));
3121
3122 return 0;
3123 }
3124
3125 static void cpc_closech(pc300dev_t * d)
3126 {
3127 pc300ch_t *chan = (pc300ch_t *) d->chan;
3128 pc300_t *card = (pc300_t *) chan->card;
3129 falc_t *pfalc = (falc_t *) & chan->falc;
3130 int ch = chan->channel;
3131
3132 cpc_writeb(card->hw.scabase + M_REG(CMD, ch), CMD_CH_RST);
3133 rx_dma_stop(card, ch);
3134 tx_dma_stop(card, ch);
3135
3136 if (card->hw.type == PC300_TE) {
3137 memset(pfalc, 0, sizeof(falc_t));
3138 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg2,
3139 cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) &
3140 ~((CPLD_REG2_FALC_TX_CLK | CPLD_REG2_FALC_RX_CLK |
3141 CPLD_REG2_FALC_LED2) << (2 * ch)));
3142 /* Reset the FALC chip */
3143 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
3144 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
3145 (CPLD_REG1_FALC_RESET << (2 * ch)));
3146 udelay(10000);
3147 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
3148 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) &
3149 ~(CPLD_REG1_FALC_RESET << (2 * ch)));
3150 }
3151 }
3152
3153 int cpc_open(struct net_device *dev)
3154 {
3155 pc300dev_t *d = (pc300dev_t *) dev->priv;
3156 struct ifreq ifr;
3157 int result;
3158
3159 #ifdef PC300_DEBUG_OTHER
3160 printk("pc300: cpc_open");
3161 #endif
3162
3163 #ifdef FIXME
3164 if (hdlc->proto.id == IF_PROTO_PPP) {
3165 d->if_ptr = &hdlc->state.ppp.pppdev;
3166 }
3167 #endif
3168
3169 result = hdlc_open(dev);
3170 if (/* FIXME hdlc->proto.id == IF_PROTO_PPP*/ 0) {
3171 dev->priv = d;
3172 }
3173 if (result) {
3174 return result;
3175 }
3176
3177 sprintf(ifr.ifr_name, "%s", dev->name);
3178 result = cpc_opench(d);
3179 if (result)
3180 goto err_out;
3181
3182 netif_start_queue(dev);
3183 return 0;
3184
3185 err_out:
3186 hdlc_close(dev);
3187 return result;
3188 }
3189
3190 static int cpc_close(struct net_device *dev)
3191 {
3192 pc300dev_t *d = (pc300dev_t *) dev->priv;
3193 pc300ch_t *chan = (pc300ch_t *) d->chan;
3194 pc300_t *card = (pc300_t *) chan->card;
3195 unsigned long flags;
3196
3197 #ifdef PC300_DEBUG_OTHER
3198 printk("pc300: cpc_close");
3199 #endif
3200
3201 netif_stop_queue(dev);
3202
3203 CPC_LOCK(card, flags);
3204 cpc_closech(d);
3205 CPC_UNLOCK(card, flags);
3206
3207 hdlc_close(dev);
3208 if (/* FIXME hdlc->proto.id == IF_PROTO_PPP*/ 0) {
3209 d->if_ptr = NULL;
3210 }
3211 #ifdef CONFIG_PC300_MLPPP
3212 if (chan->conf.proto == PC300_PROTO_MLPPP) {
3213 cpc_tty_unregister_service(d);
3214 chan->conf.proto = 0xffff;
3215 }
3216 #endif
3217
3218 return 0;
3219 }
3220
3221 static uclong detect_ram(pc300_t * card)
3222 {
3223 uclong i;
3224 ucchar data;
3225 void __iomem *rambase = card->hw.rambase;
3226
3227 card->hw.ramsize = PC300_RAMSIZE;
3228 /* Let's find out how much RAM is present on this board */
3229 for (i = 0; i < card->hw.ramsize; i++) {
3230 data = (ucchar) (i & 0xff);
3231 cpc_writeb(rambase + i, data);
3232 if (cpc_readb(rambase + i) != data) {
3233 break;
3234 }
3235 }
3236 return (i);
3237 }
3238
3239 static void plx_init(pc300_t * card)
3240 {
3241 struct RUNTIME_9050 __iomem *plx_ctl = card->hw.plxbase;
3242
3243 /* Reset PLX */
3244 cpc_writel(&plx_ctl->init_ctrl,
3245 cpc_readl(&plx_ctl->init_ctrl) | 0x40000000);
3246 udelay(10000L);
3247 cpc_writel(&plx_ctl->init_ctrl,
3248 cpc_readl(&plx_ctl->init_ctrl) & ~0x40000000);
3249
3250 /* Reload Config. Registers from EEPROM */
3251 cpc_writel(&plx_ctl->init_ctrl,
3252 cpc_readl(&plx_ctl->init_ctrl) | 0x20000000);
3253 udelay(10000L);
3254 cpc_writel(&plx_ctl->init_ctrl,
3255 cpc_readl(&plx_ctl->init_ctrl) & ~0x20000000);
3256
3257 }
3258
3259 static inline void show_version(void)
3260 {
3261 char *rcsvers, *rcsdate, *tmp;
3262
3263 rcsvers = strchr(rcsid, ' ');
3264 rcsvers++;
3265 tmp = strchr(rcsvers, ' ');
3266 *tmp++ = '\0';
3267 rcsdate = strchr(tmp, ' ');
3268 rcsdate++;
3269 tmp = strrchr(rcsdate, ' ');
3270 *tmp = '\0';
3271 printk(KERN_INFO "Cyclades-PC300 driver %s %s (built %s %s)\n",
3272 rcsvers, rcsdate, __DATE__, __TIME__);
3273 } /* show_version */
3274
3275 static void cpc_init_card(pc300_t * card)
3276 {
3277 int i, devcount = 0;
3278 static int board_nbr = 1;
3279
3280 /* Enable interrupts on the PCI bridge */
3281 plx_init(card);
3282 cpc_writew(card->hw.plxbase + card->hw.intctl_reg,
3283 cpc_readw(card->hw.plxbase + card->hw.intctl_reg) | 0x0040);
3284
3285 #ifdef USE_PCI_CLOCK
3286 /* Set board clock to PCI clock */
3287 cpc_writel(card->hw.plxbase + card->hw.gpioc_reg,
3288 cpc_readl(card->hw.plxbase + card->hw.gpioc_reg) | 0x00000004UL);
3289 card->hw.clock = PC300_PCI_CLOCK;
3290 #else
3291 /* Set board clock to internal oscillator clock */
3292 cpc_writel(card->hw.plxbase + card->hw.gpioc_reg,
3293 cpc_readl(card->hw.plxbase + card->hw.gpioc_reg) & ~0x00000004UL);
3294 card->hw.clock = PC300_OSC_CLOCK;
3295 #endif
3296
3297 /* Detect actual on-board RAM size */
3298 card->hw.ramsize = detect_ram(card);
3299
3300 /* Set Global SCA-II registers */
3301 cpc_writeb(card->hw.scabase + PCR, PCR_PR2);
3302 cpc_writeb(card->hw.scabase + BTCR, 0x10);
3303 cpc_writeb(card->hw.scabase + WCRL, 0);
3304 cpc_writeb(card->hw.scabase + DMER, 0x80);
3305
3306 if (card->hw.type == PC300_TE) {
3307 ucchar reg1;
3308
3309 /* Check CPLD version */
3310 reg1 = cpc_readb(card->hw.falcbase + CPLD_REG1);
3311 cpc_writeb(card->hw.falcbase + CPLD_REG1, (reg1 + 0x5a));
3312 if (cpc_readb(card->hw.falcbase + CPLD_REG1) == reg1) {
3313 /* New CPLD */
3314 card->hw.cpld_id = cpc_readb(card->hw.falcbase + CPLD_ID_REG);
3315 card->hw.cpld_reg1 = CPLD_V2_REG1;
3316 card->hw.cpld_reg2 = CPLD_V2_REG2;
3317 } else {
3318 /* old CPLD */
3319 card->hw.cpld_id = 0;
3320 card->hw.cpld_reg1 = CPLD_REG1;
3321 card->hw.cpld_reg2 = CPLD_REG2;
3322 cpc_writeb(card->hw.falcbase + CPLD_REG1, reg1);
3323 }
3324
3325 /* Enable the board's global clock */
3326 cpc_writeb(card->hw.falcbase + card->hw.cpld_reg1,
3327 cpc_readb(card->hw.falcbase + card->hw.cpld_reg1) |
3328 CPLD_REG1_GLOBAL_CLK);
3329
3330 }
3331
3332 for (i = 0; i < card->hw.nchan; i++) {
3333 pc300ch_t *chan = &card->chan[i];
3334 pc300dev_t *d = &chan->d;
3335 hdlc_device *hdlc;
3336 struct net_device *dev;
3337
3338 chan->card = card;
3339 chan->channel = i;
3340 chan->conf.phys_settings.clock_rate = 0;
3341 chan->conf.phys_settings.clock_type = CLOCK_EXT;
3342 chan->conf.proto_settings.encoding = ENCODING_NRZ;
3343 chan->conf.proto_settings.parity = PARITY_CRC16_PR1_CCITT;
3344 switch (card->hw.type) {
3345 case PC300_TE:
3346 chan->conf.media = IF_IFACE_T1;
3347 chan->conf.lcode = PC300_LC_B8ZS;
3348 chan->conf.fr_mode = PC300_FR_ESF;
3349 chan->conf.lbo = PC300_LBO_0_DB;
3350 chan->conf.rx_sens = PC300_RX_SENS_SH;
3351 chan->conf.tslot_bitmap = 0xffffffffUL;
3352 break;
3353
3354 case PC300_X21:
3355 chan->conf.media = IF_IFACE_X21;
3356 break;
3357
3358 case PC300_RSV:
3359 default:
3360 chan->conf.media = IF_IFACE_V35;
3361 break;
3362 }
3363 chan->conf.proto = IF_PROTO_PPP;
3364 chan->tx_first_bd = 0;
3365 chan->tx_next_bd = 0;
3366 chan->rx_first_bd = 0;
3367 chan->rx_last_bd = N_DMA_RX_BUF - 1;
3368 chan->nfree_tx_bd = N_DMA_TX_BUF;
3369
3370 d->chan = chan;
3371 d->tx_skb = NULL;
3372 d->trace_on = 0;
3373 d->line_on = 0;
3374 d->line_off = 0;
3375
3376 dev = alloc_hdlcdev(NULL);
3377 if (dev == NULL)
3378 continue;
3379
3380 hdlc = dev_to_hdlc(dev);
3381 hdlc->xmit = cpc_queue_xmit;
3382 hdlc->attach = cpc_attach;
3383 d->dev = dev;
3384 dev->mem_start = card->hw.ramphys;
3385 dev->mem_end = card->hw.ramphys + card->hw.ramsize - 1;
3386 dev->irq = card->hw.irq;
3387 dev->init = NULL;
3388 dev->tx_queue_len = PC300_TX_QUEUE_LEN;
3389 dev->mtu = PC300_DEF_MTU;
3390
3391 dev->open = cpc_open;
3392 dev->stop = cpc_close;
3393 dev->tx_timeout = cpc_tx_timeout;
3394 dev->watchdog_timeo = PC300_TX_TIMEOUT;
3395 dev->get_stats = cpc_get_stats;
3396 dev->set_multicast_list = NULL;
3397 dev->set_mac_address = NULL;
3398 dev->change_mtu = cpc_change_mtu;
3399 dev->do_ioctl = cpc_ioctl;
3400
3401 if (register_hdlc_device(dev) == 0) {
3402 dev->priv = d; /* We need 'priv', hdlc doesn't */
3403 printk("%s: Cyclades-PC300/", dev->name);
3404 switch (card->hw.type) {
3405 case PC300_TE:
3406 if (card->hw.bus == PC300_PMC) {
3407 printk("TE-M");
3408 } else {
3409 printk("TE ");
3410 }
3411 break;
3412
3413 case PC300_X21:
3414 printk("X21 ");
3415 break;
3416
3417 case PC300_RSV:
3418 default:
3419 printk("RSV ");
3420 break;
3421 }
3422 printk (" #%d, %dKB of RAM at 0x%08x, IRQ%d, channel %d.\n",
3423 board_nbr, card->hw.ramsize / 1024,
3424 card->hw.ramphys, card->hw.irq, i + 1);
3425 devcount++;
3426 } else {
3427 printk ("Dev%d on card(0x%08x): unable to allocate i/f name.\n",
3428 i + 1, card->hw.ramphys);
3429 free_netdev(dev);
3430 continue;
3431 }
3432 }
3433 spin_lock_init(&card->card_lock);
3434
3435 board_nbr++;
3436 }
3437
3438 static int __devinit
3439 cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
3440 {
3441 static int first_time = 1;
3442 ucchar cpc_rev_id;
3443 int err, eeprom_outdated = 0;
3444 ucshort device_id;
3445 pc300_t *card;
3446
3447 if (first_time) {
3448 first_time = 0;
3449 show_version();
3450 #ifdef CONFIG_PC300_MLPPP
3451 cpc_tty_reset_var();
3452 #endif
3453 }
3454
3455 if ((err = pci_enable_device(pdev)) < 0)
3456 return err;
3457
3458 card = kmalloc(sizeof(pc300_t), GFP_KERNEL);
3459 if (card == NULL) {
3460 printk("PC300 found at RAM 0x%016llx, "
3461 "but could not allocate card structure.\n",
3462 (unsigned long long)pci_resource_start(pdev, 3));
3463 err = -ENOMEM;
3464 goto err_disable_dev;
3465 }
3466 memset(card, 0, sizeof(pc300_t));
3467
3468 err = -ENODEV;
3469
3470 /* read PCI configuration area */
3471 device_id = ent->device;
3472 card->hw.irq = pdev->irq;
3473 card->hw.iophys = pci_resource_start(pdev, 1);
3474 card->hw.iosize = pci_resource_len(pdev, 1);
3475 card->hw.scaphys = pci_resource_start(pdev, 2);
3476 card->hw.scasize = pci_resource_len(pdev, 2);
3477 card->hw.ramphys = pci_resource_start(pdev, 3);
3478 card->hw.alloc_ramsize = pci_resource_len(pdev, 3);
3479 card->hw.falcphys = pci_resource_start(pdev, 4);
3480 card->hw.falcsize = pci_resource_len(pdev, 4);
3481 card->hw.plxphys = pci_resource_start(pdev, 5);
3482 card->hw.plxsize = pci_resource_len(pdev, 5);
3483 pci_read_config_byte(pdev, PCI_REVISION_ID, &cpc_rev_id);
3484
3485 switch (device_id) {
3486 case PCI_DEVICE_ID_PC300_RX_1:
3487 case PCI_DEVICE_ID_PC300_TE_1:
3488 case PCI_DEVICE_ID_PC300_TE_M_1:
3489 card->hw.nchan = 1;
3490 break;
3491
3492 case PCI_DEVICE_ID_PC300_RX_2:
3493 case PCI_DEVICE_ID_PC300_TE_2:
3494 case PCI_DEVICE_ID_PC300_TE_M_2:
3495 default:
3496 card->hw.nchan = PC300_MAXCHAN;
3497 break;
3498 }
3499 #ifdef PC300_DEBUG_PCI
3500 printk("cpc (bus=0x0%x,pci_id=0x%x,", pdev->bus->number, pdev->devfn);
3501 printk("rev_id=%d) IRQ%d\n", cpc_rev_id, card->hw.irq);
3502 printk("cpc:found ramaddr=0x%08lx plxaddr=0x%08lx "
3503 "ctladdr=0x%08lx falcaddr=0x%08lx\n",
3504 card->hw.ramphys, card->hw.plxphys, card->hw.scaphys,
3505 card->hw.falcphys);
3506 #endif
3507 /* Although we don't use this I/O region, we should
3508 * request it from the kernel anyway, to avoid problems
3509 * with other drivers accessing it. */
3510 if (!request_region(card->hw.iophys, card->hw.iosize, "PLX Registers")) {
3511 /* In case we can't allocate it, warn user */
3512 printk("WARNING: couldn't allocate I/O region for PC300 board "
3513 "at 0x%08x!\n", card->hw.ramphys);
3514 }
3515
3516 if (card->hw.plxphys) {
3517 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, card->hw.plxphys);
3518 } else {
3519 eeprom_outdated = 1;
3520 card->hw.plxphys = pci_resource_start(pdev, 0);
3521 card->hw.plxsize = pci_resource_len(pdev, 0);
3522 }
3523
3524 if (!request_mem_region(card->hw.plxphys, card->hw.plxsize,
3525 "PLX Registers")) {
3526 printk("PC300 found at RAM 0x%08x, "
3527 "but could not allocate PLX mem region.\n",
3528 card->hw.ramphys);
3529 goto err_release_io;
3530 }
3531 if (!request_mem_region(card->hw.ramphys, card->hw.alloc_ramsize,
3532 "On-board RAM")) {
3533 printk("PC300 found at RAM 0x%08x, "
3534 "but could not allocate RAM mem region.\n",
3535 card->hw.ramphys);
3536 goto err_release_plx;
3537 }
3538 if (!request_mem_region(card->hw.scaphys, card->hw.scasize,
3539 "SCA-II Registers")) {
3540 printk("PC300 found at RAM 0x%08x, "
3541 "but could not allocate SCA mem region.\n",
3542 card->hw.ramphys);
3543 goto err_release_ram;
3544 }
3545
3546 card->hw.plxbase = ioremap(card->hw.plxphys, card->hw.plxsize);
3547 card->hw.rambase = ioremap(card->hw.ramphys, card->hw.alloc_ramsize);
3548 card->hw.scabase = ioremap(card->hw.scaphys, card->hw.scasize);
3549 switch (device_id) {
3550 case PCI_DEVICE_ID_PC300_TE_1:
3551 case PCI_DEVICE_ID_PC300_TE_2:
3552 case PCI_DEVICE_ID_PC300_TE_M_1:
3553 case PCI_DEVICE_ID_PC300_TE_M_2:
3554 request_mem_region(card->hw.falcphys, card->hw.falcsize,
3555 "FALC Registers");
3556 card->hw.falcbase = ioremap(card->hw.falcphys, card->hw.falcsize);
3557 break;
3558
3559 case PCI_DEVICE_ID_PC300_RX_1:
3560 case PCI_DEVICE_ID_PC300_RX_2:
3561 default:
3562 card->hw.falcbase = NULL;
3563 break;
3564 }
3565
3566 #ifdef PC300_DEBUG_PCI
3567 printk("cpc: relocate ramaddr=0x%08lx plxaddr=0x%08lx "
3568 "ctladdr=0x%08lx falcaddr=0x%08lx\n",
3569 card->hw.rambase, card->hw.plxbase, card->hw.scabase,
3570 card->hw.falcbase);
3571 #endif
3572
3573 /* Set PCI drv pointer to the card structure */
3574 pci_set_drvdata(pdev, card);
3575
3576 /* Set board type */
3577 switch (device_id) {
3578 case PCI_DEVICE_ID_PC300_TE_1:
3579 case PCI_DEVICE_ID_PC300_TE_2:
3580 case PCI_DEVICE_ID_PC300_TE_M_1:
3581 case PCI_DEVICE_ID_PC300_TE_M_2:
3582 card->hw.type = PC300_TE;
3583
3584 if ((device_id == PCI_DEVICE_ID_PC300_TE_M_1) ||
3585 (device_id == PCI_DEVICE_ID_PC300_TE_M_2)) {
3586 card->hw.bus = PC300_PMC;
3587 /* Set PLX register offsets */
3588 card->hw.gpioc_reg = 0x54;
3589 card->hw.intctl_reg = 0x4c;
3590 } else {
3591 card->hw.bus = PC300_PCI;
3592 /* Set PLX register offsets */
3593 card->hw.gpioc_reg = 0x50;
3594 card->hw.intctl_reg = 0x4c;
3595 }
3596 break;
3597
3598 case PCI_DEVICE_ID_PC300_RX_1:
3599 case PCI_DEVICE_ID_PC300_RX_2:
3600 default:
3601 card->hw.bus = PC300_PCI;
3602 /* Set PLX register offsets */
3603 card->hw.gpioc_reg = 0x50;
3604 card->hw.intctl_reg = 0x4c;
3605
3606 if ((cpc_readl(card->hw.plxbase + card->hw.gpioc_reg) & PC300_CTYPE_MASK)) {
3607 card->hw.type = PC300_X21;
3608 } else {
3609 card->hw.type = PC300_RSV;
3610 }
3611 break;
3612 }
3613
3614 /* Allocate IRQ */
3615 if (request_irq(card->hw.irq, cpc_intr, IRQF_SHARED, "Cyclades-PC300", card)) {
3616 printk ("PC300 found at RAM 0x%08x, but could not allocate IRQ%d.\n",
3617 card->hw.ramphys, card->hw.irq);
3618 goto err_io_unmap;
3619 }
3620
3621 cpc_init_card(card);
3622
3623 if (eeprom_outdated)
3624 printk("WARNING: PC300 with outdated EEPROM.\n");
3625 return 0;
3626
3627 err_io_unmap:
3628 iounmap(card->hw.plxbase);
3629 iounmap(card->hw.scabase);
3630 iounmap(card->hw.rambase);
3631 if (card->hw.type == PC300_TE) {
3632 iounmap(card->hw.falcbase);
3633 release_mem_region(card->hw.falcphys, card->hw.falcsize);
3634 }
3635 release_mem_region(card->hw.scaphys, card->hw.scasize);
3636 err_release_ram:
3637 release_mem_region(card->hw.ramphys, card->hw.alloc_ramsize);
3638 err_release_plx:
3639 release_mem_region(card->hw.plxphys, card->hw.plxsize);
3640 err_release_io:
3641 release_region(card->hw.iophys, card->hw.iosize);
3642 kfree(card);
3643 err_disable_dev:
3644 pci_disable_device(pdev);
3645 return err;
3646 }
3647
3648 static void __devexit cpc_remove_one(struct pci_dev *pdev)
3649 {
3650 pc300_t *card = pci_get_drvdata(pdev);
3651
3652 if (card->hw.rambase != 0) {
3653 int i;
3654
3655 /* Disable interrupts on the PCI bridge */
3656 cpc_writew(card->hw.plxbase + card->hw.intctl_reg,
3657 cpc_readw(card->hw.plxbase + card->hw.intctl_reg) & ~(0x0040));
3658
3659 for (i = 0; i < card->hw.nchan; i++) {
3660 unregister_hdlc_device(card->chan[i].d.dev);
3661 }
3662 iounmap(card->hw.plxbase);
3663 iounmap(card->hw.scabase);
3664 iounmap(card->hw.rambase);
3665 release_mem_region(card->hw.plxphys, card->hw.plxsize);
3666 release_mem_region(card->hw.ramphys, card->hw.alloc_ramsize);
3667 release_mem_region(card->hw.scaphys, card->hw.scasize);
3668 release_region(card->hw.iophys, card->hw.iosize);
3669 if (card->hw.type == PC300_TE) {
3670 iounmap(card->hw.falcbase);
3671 release_mem_region(card->hw.falcphys, card->hw.falcsize);
3672 }
3673 for (i = 0; i < card->hw.nchan; i++)
3674 if (card->chan[i].d.dev)
3675 free_netdev(card->chan[i].d.dev);
3676 if (card->hw.irq)
3677 free_irq(card->hw.irq, card);
3678 kfree(card);
3679 pci_disable_device(pdev);
3680 }
3681 }
3682
3683 static struct pci_driver cpc_driver = {
3684 .name = "pc300",
3685 .id_table = cpc_pci_dev_id,
3686 .probe = cpc_init_one,
3687 .remove = __devexit_p(cpc_remove_one),
3688 };
3689
3690 static int __init cpc_init(void)
3691 {
3692 return pci_register_driver(&cpc_driver);
3693 }
3694
3695 static void __exit cpc_cleanup_module(void)
3696 {
3697 pci_unregister_driver(&cpc_driver);
3698 }
3699
3700 module_init(cpc_init);
3701 module_exit(cpc_cleanup_module);
3702
3703 MODULE_DESCRIPTION("Cyclades-PC300 cards driver");
3704 MODULE_AUTHOR( "Author: Ivan Passos <ivan@cyclades.com>\r\n"
3705 "Maintainer: PC300 Maintainer <pc300@cyclades.com");
3706 MODULE_LICENSE("GPL");
3707
Support for the Chinese Samsung S3C2440 based development boards