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authorPantelis Antoniou <pantelis.antoniou@gmail.com>2005-10-28 16:25:58 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-10-28 16:25:58 -0400
commit48257c4f168e5d040394aeca4d37b59f68e0d36b (patch)
tree7e553a6018862338d80fb5b0e4070a371a8fb001 /drivers/net
parentd8840ac907c7943bc7e196b11812adfa95cb28ef (diff)
Add fs_enet ethernet network driver, for several embedded platforms.
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/Kconfig1
-rw-r--r--drivers/net/Makefile3
-rw-r--r--drivers/net/fs_enet/Kconfig20
-rw-r--r--drivers/net/fs_enet/Makefile10
-rw-r--r--drivers/net/fs_enet/fs_enet-main.c1226
-rw-r--r--drivers/net/fs_enet/fs_enet-mii.c507
-rw-r--r--drivers/net/fs_enet/fs_enet.h245
-rw-r--r--drivers/net/fs_enet/mac-fcc.c578
-rw-r--r--drivers/net/fs_enet/mac-fec.c653
-rw-r--r--drivers/net/fs_enet/mac-scc.c524
-rw-r--r--drivers/net/fs_enet/mii-bitbang.c405
-rw-r--r--drivers/net/fs_enet/mii-fixed.c92
12 files changed, 4264 insertions, 0 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 814a93b8c903..27732fdeeea4 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -1775,6 +1775,7 @@ config NE_H8300
1775 controller on the Renesas H8/300 processor. 1775 controller on the Renesas H8/300 processor.
1776 1776
1777source "drivers/net/fec_8xx/Kconfig" 1777source "drivers/net/fec_8xx/Kconfig"
1778source "drivers/net/fs_enet/Kconfig"
1778 1779
1779endmenu 1780endmenu
1780 1781
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 1a84e0435f64..7c313cb341b8 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -203,3 +203,6 @@ obj-$(CONFIG_IRDA) += irda/
203obj-$(CONFIG_ETRAX_ETHERNET) += cris/ 203obj-$(CONFIG_ETRAX_ETHERNET) += cris/
204 204
205obj-$(CONFIG_NETCONSOLE) += netconsole.o 205obj-$(CONFIG_NETCONSOLE) += netconsole.o
206
207obj-$(CONFIG_FS_ENET) += fs_enet/
208
diff --git a/drivers/net/fs_enet/Kconfig b/drivers/net/fs_enet/Kconfig
new file mode 100644
index 000000000000..6aaee67dd4b7
--- /dev/null
+++ b/drivers/net/fs_enet/Kconfig
@@ -0,0 +1,20 @@
1config FS_ENET
2 tristate "Freescale Ethernet Driver"
3 depends on NET_ETHERNET && (CPM1 || CPM2)
4 select MII
5
6config FS_ENET_HAS_SCC
7 bool "Chip has an SCC usable for ethernet"
8 depends on FS_ENET && (CPM1 || CPM2)
9 default y
10
11config FS_ENET_HAS_FCC
12 bool "Chip has an FCC usable for ethernet"
13 depends on FS_ENET && CPM2
14 default y
15
16config FS_ENET_HAS_FEC
17 bool "Chip has an FEC usable for ethernet"
18 depends on FS_ENET && CPM1
19 default y
20
diff --git a/drivers/net/fs_enet/Makefile b/drivers/net/fs_enet/Makefile
new file mode 100644
index 000000000000..d6dd3f2fb43e
--- /dev/null
+++ b/drivers/net/fs_enet/Makefile
@@ -0,0 +1,10 @@
1#
2# Makefile for the Freescale Ethernet controllers
3#
4
5obj-$(CONFIG_FS_ENET) += fs_enet.o
6
7obj-$(CONFIG_8xx) += mac-fec.o mac-scc.o
8obj-$(CONFIG_8260) += mac-fcc.o
9
10fs_enet-objs := fs_enet-main.o fs_enet-mii.o mii-bitbang.o mii-fixed.o
diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c
new file mode 100644
index 000000000000..44fac7373289
--- /dev/null
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -0,0 +1,1226 @@
1/*
2 * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
3 *
4 * Copyright (c) 2003 Intracom S.A.
5 * by Pantelis Antoniou <panto@intracom.gr>
6 *
7 * 2005 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
9 *
10 * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com>
11 * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se>
12 *
13 * This file is licensed under the terms of the GNU General Public License
14 * version 2. This program is licensed "as is" without any warranty of any
15 * kind, whether express or implied.
16 */
17
18#include <linux/config.h>
19#include <linux/module.h>
20#include <linux/kernel.h>
21#include <linux/types.h>
22#include <linux/sched.h>
23#include <linux/string.h>
24#include <linux/ptrace.h>
25#include <linux/errno.h>
26#include <linux/ioport.h>
27#include <linux/slab.h>
28#include <linux/interrupt.h>
29#include <linux/pci.h>
30#include <linux/init.h>
31#include <linux/delay.h>
32#include <linux/netdevice.h>
33#include <linux/etherdevice.h>
34#include <linux/skbuff.h>
35#include <linux/spinlock.h>
36#include <linux/mii.h>
37#include <linux/ethtool.h>
38#include <linux/bitops.h>
39#include <linux/fs.h>
40
41#include <linux/vmalloc.h>
42#include <asm/pgtable.h>
43
44#include <asm/pgtable.h>
45#include <asm/irq.h>
46#include <asm/uaccess.h>
47
48#include "fs_enet.h"
49
50/*************************************************/
51
52static char version[] __devinitdata =
53 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")" "\n";
54
55MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>");
56MODULE_DESCRIPTION("Freescale Ethernet Driver");
57MODULE_LICENSE("GPL");
58MODULE_VERSION(DRV_MODULE_VERSION);
59
60MODULE_PARM(fs_enet_debug, "i");
61MODULE_PARM_DESC(fs_enet_debug,
62 "Freescale bitmapped debugging message enable value");
63
64int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */
65
66static void fs_set_multicast_list(struct net_device *dev)
67{
68 struct fs_enet_private *fep = netdev_priv(dev);
69
70 (*fep->ops->set_multicast_list)(dev);
71}
72
73/* NAPI receive function */
74static int fs_enet_rx_napi(struct net_device *dev, int *budget)
75{
76 struct fs_enet_private *fep = netdev_priv(dev);
77 const struct fs_platform_info *fpi = fep->fpi;
78 cbd_t *bdp;
79 struct sk_buff *skb, *skbn, *skbt;
80 int received = 0;
81 u16 pkt_len, sc;
82 int curidx;
83 int rx_work_limit = 0; /* pacify gcc */
84
85 rx_work_limit = min(dev->quota, *budget);
86
87 if (!netif_running(dev))
88 return 0;
89
90 /*
91 * First, grab all of the stats for the incoming packet.
92 * These get messed up if we get called due to a busy condition.
93 */
94 bdp = fep->cur_rx;
95
96 /* clear RX status bits for napi*/
97 (*fep->ops->napi_clear_rx_event)(dev);
98
99 while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
100
101 curidx = bdp - fep->rx_bd_base;
102
103 /*
104 * Since we have allocated space to hold a complete frame,
105 * the last indicator should be set.
106 */
107 if ((sc & BD_ENET_RX_LAST) == 0)
108 printk(KERN_WARNING DRV_MODULE_NAME
109 ": %s rcv is not +last\n",
110 dev->name);
111
112 /*
113 * Check for errors.
114 */
115 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
116 BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
117 fep->stats.rx_errors++;
118 /* Frame too long or too short. */
119 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
120 fep->stats.rx_length_errors++;
121 /* Frame alignment */
122 if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
123 fep->stats.rx_frame_errors++;
124 /* CRC Error */
125 if (sc & BD_ENET_RX_CR)
126 fep->stats.rx_crc_errors++;
127 /* FIFO overrun */
128 if (sc & BD_ENET_RX_OV)
129 fep->stats.rx_crc_errors++;
130
131 skb = fep->rx_skbuff[curidx];
132
133 dma_unmap_single(fep->dev, skb->data,
134 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
135 DMA_FROM_DEVICE);
136
137 skbn = skb;
138
139 } else {
140
141 /* napi, got packet but no quota */
142 if (--rx_work_limit < 0)
143 break;
144
145 skb = fep->rx_skbuff[curidx];
146
147 dma_unmap_single(fep->dev, skb->data,
148 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
149 DMA_FROM_DEVICE);
150
151 /*
152 * Process the incoming frame.
153 */
154 fep->stats.rx_packets++;
155 pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
156 fep->stats.rx_bytes += pkt_len + 4;
157
158 if (pkt_len <= fpi->rx_copybreak) {
159 /* +2 to make IP header L1 cache aligned */
160 skbn = dev_alloc_skb(pkt_len + 2);
161 if (skbn != NULL) {
162 skb_reserve(skbn, 2); /* align IP header */
163 memcpy(skbn->data, skb->data, pkt_len);
164 /* swap */
165 skbt = skb;
166 skb = skbn;
167 skbn = skbt;
168 }
169 } else
170 skbn = dev_alloc_skb(ENET_RX_FRSIZE);
171
172 if (skbn != NULL) {
173 skb->dev = dev;
174 skb_put(skb, pkt_len); /* Make room */
175 skb->protocol = eth_type_trans(skb, dev);
176 received++;
177 netif_receive_skb(skb);
178 } else {
179 printk(KERN_WARNING DRV_MODULE_NAME
180 ": %s Memory squeeze, dropping packet.\n",
181 dev->name);
182 fep->stats.rx_dropped++;
183 skbn = skb;
184 }
185 }
186
187 fep->rx_skbuff[curidx] = skbn;
188 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
189 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
190 DMA_FROM_DEVICE));
191 CBDW_DATLEN(bdp, 0);
192 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
193
194 /*
195 * Update BD pointer to next entry.
196 */
197 if ((sc & BD_ENET_RX_WRAP) == 0)
198 bdp++;
199 else
200 bdp = fep->rx_bd_base;
201
202 (*fep->ops->rx_bd_done)(dev);
203 }
204
205 fep->cur_rx = bdp;
206
207 dev->quota -= received;
208 *budget -= received;
209
210 if (rx_work_limit < 0)
211 return 1; /* not done */
212
213 /* done */
214 netif_rx_complete(dev);
215
216 (*fep->ops->napi_enable_rx)(dev);
217
218 return 0;
219}
220
221/* non NAPI receive function */
222static int fs_enet_rx_non_napi(struct net_device *dev)
223{
224 struct fs_enet_private *fep = netdev_priv(dev);
225 const struct fs_platform_info *fpi = fep->fpi;
226 cbd_t *bdp;
227 struct sk_buff *skb, *skbn, *skbt;
228 int received = 0;
229 u16 pkt_len, sc;
230 int curidx;
231 /*
232 * First, grab all of the stats for the incoming packet.
233 * These get messed up if we get called due to a busy condition.
234 */
235 bdp = fep->cur_rx;
236
237 while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
238
239 curidx = bdp - fep->rx_bd_base;
240
241 /*
242 * Since we have allocated space to hold a complete frame,
243 * the last indicator should be set.
244 */
245 if ((sc & BD_ENET_RX_LAST) == 0)
246 printk(KERN_WARNING DRV_MODULE_NAME
247 ": %s rcv is not +last\n",
248 dev->name);
249
250 /*
251 * Check for errors.
252 */
253 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
254 BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
255 fep->stats.rx_errors++;
256 /* Frame too long or too short. */
257 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
258 fep->stats.rx_length_errors++;
259 /* Frame alignment */
260 if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
261 fep->stats.rx_frame_errors++;
262 /* CRC Error */
263 if (sc & BD_ENET_RX_CR)
264 fep->stats.rx_crc_errors++;
265 /* FIFO overrun */
266 if (sc & BD_ENET_RX_OV)
267 fep->stats.rx_crc_errors++;
268
269 skb = fep->rx_skbuff[curidx];
270
271 dma_unmap_single(fep->dev, skb->data,
272 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
273 DMA_FROM_DEVICE);
274
275 skbn = skb;
276
277 } else {
278
279 skb = fep->rx_skbuff[curidx];
280
281 dma_unmap_single(fep->dev, skb->data,
282 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
283 DMA_FROM_DEVICE);
284
285 /*
286 * Process the incoming frame.
287 */
288 fep->stats.rx_packets++;
289 pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
290 fep->stats.rx_bytes += pkt_len + 4;
291
292 if (pkt_len <= fpi->rx_copybreak) {
293 /* +2 to make IP header L1 cache aligned */
294 skbn = dev_alloc_skb(pkt_len + 2);
295 if (skbn != NULL) {
296 skb_reserve(skbn, 2); /* align IP header */
297 memcpy(skbn->data, skb->data, pkt_len);
298 /* swap */
299 skbt = skb;
300 skb = skbn;
301 skbn = skbt;
302 }
303 } else
304 skbn = dev_alloc_skb(ENET_RX_FRSIZE);
305
306 if (skbn != NULL) {
307 skb->dev = dev;
308 skb_put(skb, pkt_len); /* Make room */
309 skb->protocol = eth_type_trans(skb, dev);
310 received++;
311 netif_rx(skb);
312 } else {
313 printk(KERN_WARNING DRV_MODULE_NAME
314 ": %s Memory squeeze, dropping packet.\n",
315 dev->name);
316 fep->stats.rx_dropped++;
317 skbn = skb;
318 }
319 }
320
321 fep->rx_skbuff[curidx] = skbn;
322 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
323 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
324 DMA_FROM_DEVICE));
325 CBDW_DATLEN(bdp, 0);
326 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
327
328 /*
329 * Update BD pointer to next entry.
330 */
331 if ((sc & BD_ENET_RX_WRAP) == 0)
332 bdp++;
333 else
334 bdp = fep->rx_bd_base;
335
336 (*fep->ops->rx_bd_done)(dev);
337 }
338
339 fep->cur_rx = bdp;
340
341 return 0;
342}
343
344static void fs_enet_tx(struct net_device *dev)
345{
346 struct fs_enet_private *fep = netdev_priv(dev);
347 cbd_t *bdp;
348 struct sk_buff *skb;
349 int dirtyidx, do_wake, do_restart;
350 u16 sc;
351
352 spin_lock(&fep->lock);
353 bdp = fep->dirty_tx;
354
355 do_wake = do_restart = 0;
356 while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) {
357
358 dirtyidx = bdp - fep->tx_bd_base;
359
360 if (fep->tx_free == fep->tx_ring)
361 break;
362
363 skb = fep->tx_skbuff[dirtyidx];
364
365 /*
366 * Check for errors.
367 */
368 if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
369 BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
370
371 if (sc & BD_ENET_TX_HB) /* No heartbeat */
372 fep->stats.tx_heartbeat_errors++;
373 if (sc & BD_ENET_TX_LC) /* Late collision */
374 fep->stats.tx_window_errors++;
375 if (sc & BD_ENET_TX_RL) /* Retrans limit */
376 fep->stats.tx_aborted_errors++;
377 if (sc & BD_ENET_TX_UN) /* Underrun */
378 fep->stats.tx_fifo_errors++;
379 if (sc & BD_ENET_TX_CSL) /* Carrier lost */
380 fep->stats.tx_carrier_errors++;
381
382 if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
383 fep->stats.tx_errors++;
384 do_restart = 1;
385 }
386 } else
387 fep->stats.tx_packets++;
388
389 if (sc & BD_ENET_TX_READY)
390 printk(KERN_WARNING DRV_MODULE_NAME
391 ": %s HEY! Enet xmit interrupt and TX_READY.\n",
392 dev->name);
393
394 /*
395 * Deferred means some collisions occurred during transmit,
396 * but we eventually sent the packet OK.
397 */
398 if (sc & BD_ENET_TX_DEF)
399 fep->stats.collisions++;
400
401 /* unmap */
402 dma_unmap_single(fep->dev, skb->data, skb->len, DMA_TO_DEVICE);
403
404 /*
405 * Free the sk buffer associated with this last transmit.
406 */
407 dev_kfree_skb_irq(skb);
408 fep->tx_skbuff[dirtyidx] = NULL;
409
410 /*
411 * Update pointer to next buffer descriptor to be transmitted.
412 */
413 if ((sc & BD_ENET_TX_WRAP) == 0)
414 bdp++;
415 else
416 bdp = fep->tx_bd_base;
417
418 /*
419 * Since we have freed up a buffer, the ring is no longer
420 * full.
421 */
422 if (!fep->tx_free++)
423 do_wake = 1;
424 }
425
426 fep->dirty_tx = bdp;
427
428 if (do_restart)
429 (*fep->ops->tx_restart)(dev);
430
431 spin_unlock(&fep->lock);
432
433 if (do_wake)
434 netif_wake_queue(dev);
435}
436
437/*
438 * The interrupt handler.
439 * This is called from the MPC core interrupt.
440 */
441static irqreturn_t
442fs_enet_interrupt(int irq, void *dev_id, struct pt_regs *regs)
443{
444 struct net_device *dev = dev_id;
445 struct fs_enet_private *fep;
446 const struct fs_platform_info *fpi;
447 u32 int_events;
448 u32 int_clr_events;
449 int nr, napi_ok;
450 int handled;
451
452 fep = netdev_priv(dev);
453 fpi = fep->fpi;
454
455 nr = 0;
456 while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) {
457
458 nr++;
459
460 int_clr_events = int_events;
461 if (fpi->use_napi)
462 int_clr_events &= ~fep->ev_napi_rx;
463
464 (*fep->ops->clear_int_events)(dev, int_clr_events);
465
466 if (int_events & fep->ev_err)
467 (*fep->ops->ev_error)(dev, int_events);
468
469 if (int_events & fep->ev_rx) {
470 if (!fpi->use_napi)
471 fs_enet_rx_non_napi(dev);
472 else {
473 napi_ok = netif_rx_schedule_prep(dev);
474
475 (*fep->ops->napi_disable_rx)(dev);
476 (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx);
477
478 /* NOTE: it is possible for FCCs in NAPI mode */
479 /* to submit a spurious interrupt while in poll */
480 if (napi_ok)
481 __netif_rx_schedule(dev);
482 }
483 }
484
485 if (int_events & fep->ev_tx)
486 fs_enet_tx(dev);
487 }
488
489 handled = nr > 0;
490 return IRQ_RETVAL(handled);
491}
492
493void fs_init_bds(struct net_device *dev)
494{
495 struct fs_enet_private *fep = netdev_priv(dev);
496 cbd_t *bdp;
497 struct sk_buff *skb;
498 int i;
499
500 fs_cleanup_bds(dev);
501
502 fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
503 fep->tx_free = fep->tx_ring;
504 fep->cur_rx = fep->rx_bd_base;
505
506 /*
507 * Initialize the receive buffer descriptors.
508 */
509 for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
510 skb = dev_alloc_skb(ENET_RX_FRSIZE);
511 if (skb == NULL) {
512 printk(KERN_WARNING DRV_MODULE_NAME
513 ": %s Memory squeeze, unable to allocate skb\n",
514 dev->name);
515 break;
516 }
517 fep->rx_skbuff[i] = skb;
518 skb->dev = dev;
519 CBDW_BUFADDR(bdp,
520 dma_map_single(fep->dev, skb->data,
521 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
522 DMA_FROM_DEVICE));
523 CBDW_DATLEN(bdp, 0); /* zero */
524 CBDW_SC(bdp, BD_ENET_RX_EMPTY |
525 ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
526 }
527 /*
528 * if we failed, fillup remainder
529 */
530 for (; i < fep->rx_ring; i++, bdp++) {
531 fep->rx_skbuff[i] = NULL;
532 CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
533 }
534
535 /*
536 * ...and the same for transmit.
537 */
538 for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
539 fep->tx_skbuff[i] = NULL;
540 CBDW_BUFADDR(bdp, 0);
541 CBDW_DATLEN(bdp, 0);
542 CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
543 }
544}
545
546void fs_cleanup_bds(struct net_device *dev)
547{
548 struct fs_enet_private *fep = netdev_priv(dev);
549 struct sk_buff *skb;
550 int i;
551
552 /*
553 * Reset SKB transmit buffers.
554 */
555 for (i = 0; i < fep->tx_ring; i++) {
556 if ((skb = fep->tx_skbuff[i]) == NULL)
557 continue;
558
559 /* unmap */
560 dma_unmap_single(fep->dev, skb->data, skb->len, DMA_TO_DEVICE);
561
562 fep->tx_skbuff[i] = NULL;
563 dev_kfree_skb(skb);
564 }
565
566 /*
567 * Reset SKB receive buffers
568 */
569 for (i = 0; i < fep->rx_ring; i++) {
570 if ((skb = fep->rx_skbuff[i]) == NULL)
571 continue;
572
573 /* unmap */
574 dma_unmap_single(fep->dev, skb->data,
575 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
576 DMA_FROM_DEVICE);
577
578 fep->rx_skbuff[i] = NULL;
579
580 dev_kfree_skb(skb);
581 }
582}
583
584/**********************************************************************************/
585
586static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
587{
588 struct fs_enet_private *fep = netdev_priv(dev);
589 cbd_t *bdp;
590 int curidx;
591 u16 sc;
592 unsigned long flags;
593
594 spin_lock_irqsave(&fep->tx_lock, flags);
595
596 /*
597 * Fill in a Tx ring entry
598 */
599 bdp = fep->cur_tx;
600
601 if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) {
602 netif_stop_queue(dev);
603 spin_unlock_irqrestore(&fep->tx_lock, flags);
604
605 /*
606 * Ooops. All transmit buffers are full. Bail out.
607 * This should not happen, since the tx queue should be stopped.
608 */
609 printk(KERN_WARNING DRV_MODULE_NAME
610 ": %s tx queue full!.\n", dev->name);
611 return NETDEV_TX_BUSY;
612 }
613
614 curidx = bdp - fep->tx_bd_base;
615 /*
616 * Clear all of the status flags.
617 */
618 CBDC_SC(bdp, BD_ENET_TX_STATS);
619
620 /*
621 * Save skb pointer.
622 */
623 fep->tx_skbuff[curidx] = skb;
624
625 fep->stats.tx_bytes += skb->len;
626
627 /*
628 * Push the data cache so the CPM does not get stale memory data.
629 */
630 CBDW_BUFADDR(bdp, dma_map_single(fep->dev,
631 skb->data, skb->len, DMA_TO_DEVICE));
632 CBDW_DATLEN(bdp, skb->len);
633
634 dev->trans_start = jiffies;
635
636 /*
637 * If this was the last BD in the ring, start at the beginning again.
638 */
639 if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
640 fep->cur_tx++;
641 else
642 fep->cur_tx = fep->tx_bd_base;
643
644 if (!--fep->tx_free)
645 netif_stop_queue(dev);
646
647 /* Trigger transmission start */
648 sc = BD_ENET_TX_READY | BD_ENET_TX_INTR |
649 BD_ENET_TX_LAST | BD_ENET_TX_TC;
650
651 /* note that while FEC does not have this bit
652 * it marks it as available for software use
653 * yay for hw reuse :) */
654 if (skb->len <= 60)
655 sc |= BD_ENET_TX_PAD;
656 CBDS_SC(bdp, sc);
657
658 (*fep->ops->tx_kickstart)(dev);
659
660 spin_unlock_irqrestore(&fep->tx_lock, flags);
661
662 return NETDEV_TX_OK;
663}
664
665static int fs_request_irq(struct net_device *dev, int irq, const char *name,
666 irqreturn_t (*irqf)(int irq, void *dev_id, struct pt_regs *regs))
667{
668 struct fs_enet_private *fep = netdev_priv(dev);
669
670 (*fep->ops->pre_request_irq)(dev, irq);
671 return request_irq(irq, irqf, SA_SHIRQ, name, dev);
672}
673
674static void fs_free_irq(struct net_device *dev, int irq)
675{
676 struct fs_enet_private *fep = netdev_priv(dev);
677
678 free_irq(irq, dev);
679 (*fep->ops->post_free_irq)(dev, irq);
680}
681
682/**********************************************************************************/
683
684/* This interrupt occurs when the PHY detects a link change. */
685static irqreturn_t
686fs_mii_link_interrupt(int irq, void *dev_id, struct pt_regs *regs)
687{
688 struct net_device *dev = dev_id;
689 struct fs_enet_private *fep;
690 const struct fs_platform_info *fpi;
691
692 fep = netdev_priv(dev);
693 fpi = fep->fpi;
694
695 /*
696 * Acknowledge the interrupt if possible. If we have not
697 * found the PHY yet we can't process or acknowledge the
698 * interrupt now. Instead we ignore this interrupt for now,
699 * which we can do since it is edge triggered. It will be
700 * acknowledged later by fs_enet_open().
701 */
702 if (!fep->phy)
703 return IRQ_NONE;
704
705 fs_mii_ack_int(dev);
706 fs_mii_link_status_change_check(dev, 0);
707
708 return IRQ_HANDLED;
709}
710
711static void fs_timeout(struct net_device *dev)
712{
713 struct fs_enet_private *fep = netdev_priv(dev);
714 unsigned long flags;
715 int wake = 0;
716
717 fep->stats.tx_errors++;
718
719 spin_lock_irqsave(&fep->lock, flags);
720
721 if (dev->flags & IFF_UP) {
722 (*fep->ops->stop)(dev);
723 (*fep->ops->restart)(dev);
724 }
725
726 wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY);
727 spin_unlock_irqrestore(&fep->lock, flags);
728
729 if (wake)
730 netif_wake_queue(dev);
731}
732
733static int fs_enet_open(struct net_device *dev)
734{
735 struct fs_enet_private *fep = netdev_priv(dev);
736 const struct fs_platform_info *fpi = fep->fpi;
737 int r;
738
739 /* Install our interrupt handler. */
740 r = fs_request_irq(dev, fep->interrupt, "fs_enet-mac", fs_enet_interrupt);
741 if (r != 0) {
742 printk(KERN_ERR DRV_MODULE_NAME
743 ": %s Could not allocate FEC IRQ!", dev->name);
744 return -EINVAL;
745 }
746
747 /* Install our phy interrupt handler */
748 if (fpi->phy_irq != -1) {
749
750 r = fs_request_irq(dev, fpi->phy_irq, "fs_enet-phy", fs_mii_link_interrupt);
751 if (r != 0) {
752 printk(KERN_ERR DRV_MODULE_NAME
753 ": %s Could not allocate PHY IRQ!", dev->name);
754 fs_free_irq(dev, fep->interrupt);
755 return -EINVAL;
756 }
757 }
758
759 fs_mii_startup(dev);
760 netif_carrier_off(dev);
761 fs_mii_link_status_change_check(dev, 1);
762
763 return 0;
764}
765
766static int fs_enet_close(struct net_device *dev)
767{
768 struct fs_enet_private *fep = netdev_priv(dev);
769 const struct fs_platform_info *fpi = fep->fpi;
770 unsigned long flags;
771
772 netif_stop_queue(dev);
773 netif_carrier_off(dev);
774 fs_mii_shutdown(dev);
775
776 spin_lock_irqsave(&fep->lock, flags);
777 (*fep->ops->stop)(dev);
778 spin_unlock_irqrestore(&fep->lock, flags);
779
780 /* release any irqs */
781 if (fpi->phy_irq != -1)
782 fs_free_irq(dev, fpi->phy_irq);
783 fs_free_irq(dev, fep->interrupt);
784
785 return 0;
786}
787
788static struct net_device_stats *fs_enet_get_stats(struct net_device *dev)
789{
790 struct fs_enet_private *fep = netdev_priv(dev);
791 return &fep->stats;
792}
793
794/*************************************************************************/
795
796static void fs_get_drvinfo(struct net_device *dev,
797 struct ethtool_drvinfo *info)
798{
799 strcpy(info->driver, DRV_MODULE_NAME);
800 strcpy(info->version, DRV_MODULE_VERSION);
801}
802
803static int fs_get_regs_len(struct net_device *dev)
804{
805 struct fs_enet_private *fep = netdev_priv(dev);
806
807 return (*fep->ops->get_regs_len)(dev);
808}
809
810static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs,
811 void *p)
812{
813 struct fs_enet_private *fep = netdev_priv(dev);
814 unsigned long flags;
815 int r, len;
816
817 len = regs->len;
818
819 spin_lock_irqsave(&fep->lock, flags);
820 r = (*fep->ops->get_regs)(dev, p, &len);
821 spin_unlock_irqrestore(&fep->lock, flags);
822
823 if (r == 0)
824 regs->version = 0;
825}
826
827static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
828{
829 struct fs_enet_private *fep = netdev_priv(dev);
830 unsigned long flags;
831 int rc;
832
833 spin_lock_irqsave(&fep->lock, flags);
834 rc = mii_ethtool_gset(&fep->mii_if, cmd);
835 spin_unlock_irqrestore(&fep->lock, flags);
836
837 return rc;
838}
839
840static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
841{
842 struct fs_enet_private *fep = netdev_priv(dev);
843 unsigned long flags;
844 int rc;
845
846 spin_lock_irqsave(&fep->lock, flags);
847 rc = mii_ethtool_sset(&fep->mii_if, cmd);
848 spin_unlock_irqrestore(&fep->lock, flags);
849
850 return rc;
851}
852
853static int fs_nway_reset(struct net_device *dev)
854{
855 struct fs_enet_private *fep = netdev_priv(dev);
856 return mii_nway_restart(&fep->mii_if);
857}
858
859static u32 fs_get_msglevel(struct net_device *dev)
860{
861 struct fs_enet_private *fep = netdev_priv(dev);
862 return fep->msg_enable;
863}
864
865static void fs_set_msglevel(struct net_device *dev, u32 value)
866{
867 struct fs_enet_private *fep = netdev_priv(dev);
868 fep->msg_enable = value;
869}
870
871static struct ethtool_ops fs_ethtool_ops = {
872 .get_drvinfo = fs_get_drvinfo,
873 .get_regs_len = fs_get_regs_len,
874 .get_settings = fs_get_settings,
875 .set_settings = fs_set_settings,
876 .nway_reset = fs_nway_reset,
877 .get_link = ethtool_op_get_link,
878 .get_msglevel = fs_get_msglevel,
879 .set_msglevel = fs_set_msglevel,
880 .get_tx_csum = ethtool_op_get_tx_csum,
881 .set_tx_csum = ethtool_op_set_tx_csum, /* local! */
882 .get_sg = ethtool_op_get_sg,
883 .set_sg = ethtool_op_set_sg,
884 .get_regs = fs_get_regs,
885};
886
887static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
888{
889 struct fs_enet_private *fep = netdev_priv(dev);
890 struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data;
891 unsigned long flags;
892 int rc;
893
894 if (!netif_running(dev))
895 return -EINVAL;
896
897 spin_lock_irqsave(&fep->lock, flags);
898 rc = generic_mii_ioctl(&fep->mii_if, mii, cmd, NULL);
899 spin_unlock_irqrestore(&fep->lock, flags);
900 return rc;
901}
902
903extern int fs_mii_connect(struct net_device *dev);
904extern void fs_mii_disconnect(struct net_device *dev);
905
906static struct net_device *fs_init_instance(struct device *dev,
907 const struct fs_platform_info *fpi)
908{
909 struct net_device *ndev = NULL;
910 struct fs_enet_private *fep = NULL;
911 int privsize, i, r, err = 0, registered = 0;
912
913 /* guard */
914 if ((unsigned int)fpi->fs_no >= FS_MAX_INDEX)
915 return ERR_PTR(-EINVAL);
916
917 privsize = sizeof(*fep) + (sizeof(struct sk_buff **) *
918 (fpi->rx_ring + fpi->tx_ring));
919
920 ndev = alloc_etherdev(privsize);
921 if (!ndev) {
922 err = -ENOMEM;
923 goto err;
924 }
925 SET_MODULE_OWNER(ndev);
926
927 fep = netdev_priv(ndev);
928 memset(fep, 0, privsize); /* clear everything */
929
930 fep->dev = dev;
931 dev_set_drvdata(dev, ndev);
932 fep->fpi = fpi;
933 if (fpi->init_ioports)
934 fpi->init_ioports();
935
936#ifdef CONFIG_FS_ENET_HAS_FEC
937 if (fs_get_fec_index(fpi->fs_no) >= 0)
938 fep->ops = &fs_fec_ops;
939#endif
940
941#ifdef CONFIG_FS_ENET_HAS_SCC
942 if (fs_get_scc_index(fpi->fs_no) >=0 )
943 fep->ops = &fs_scc_ops;
944#endif
945
946#ifdef CONFIG_FS_ENET_HAS_FCC
947 if (fs_get_fcc_index(fpi->fs_no) >= 0)
948 fep->ops = &fs_fcc_ops;
949#endif
950
951 if (fep->ops == NULL) {
952 printk(KERN_ERR DRV_MODULE_NAME
953 ": %s No matching ops found (%d).\n",
954 ndev->name, fpi->fs_no);
955 err = -EINVAL;
956 goto err;
957 }
958
959 r = (*fep->ops->setup_data)(ndev);
960 if (r != 0) {
961 printk(KERN_ERR DRV_MODULE_NAME
962 ": %s setup_data failed\n",
963 ndev->name);
964 err = r;
965 goto err;
966 }
967
968 /* point rx_skbuff, tx_skbuff */
969 fep->rx_skbuff = (struct sk_buff **)&fep[1];
970 fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
971
972 /* init locks */
973 spin_lock_init(&fep->lock);
974 spin_lock_init(&fep->tx_lock);
975
976 /*
977 * Set the Ethernet address.
978 */
979 for (i = 0; i < 6; i++)
980 ndev->dev_addr[i] = fpi->macaddr[i];
981
982 r = (*fep->ops->allocate_bd)(ndev);
983
984 if (fep->ring_base == NULL) {
985 printk(KERN_ERR DRV_MODULE_NAME
986 ": %s buffer descriptor alloc failed (%d).\n", ndev->name, r);
987 err = r;
988 goto err;
989 }
990
991 /*
992 * Set receive and transmit descriptor base.
993 */
994 fep->rx_bd_base = fep->ring_base;
995 fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
996
997 /* initialize ring size variables */
998 fep->tx_ring = fpi->tx_ring;
999 fep->rx_ring = fpi->rx_ring;
1000
1001 /*
1002 * The FEC Ethernet specific entries in the device structure.
1003 */
1004 ndev->open = fs_enet_open;
1005 ndev->hard_start_xmit = fs_enet_start_xmit;
1006 ndev->tx_timeout = fs_timeout;
1007 ndev->watchdog_timeo = 2 * HZ;
1008 ndev->stop = fs_enet_close;
1009 ndev->get_stats = fs_enet_get_stats;
1010 ndev->set_multicast_list = fs_set_multicast_list;
1011 if (fpi->use_napi) {
1012 ndev->poll = fs_enet_rx_napi;
1013 ndev->weight = fpi->napi_weight;
1014 }
1015 ndev->ethtool_ops = &fs_ethtool_ops;
1016 ndev->do_ioctl = fs_ioctl;
1017
1018 init_timer(&fep->phy_timer_list);
1019
1020 netif_carrier_off(ndev);
1021
1022 err = register_netdev(ndev);
1023 if (err != 0) {
1024 printk(KERN_ERR DRV_MODULE_NAME
1025 ": %s register_netdev failed.\n", ndev->name);
1026 goto err;
1027 }
1028 registered = 1;
1029
1030 err = fs_mii_connect(ndev);
1031 if (err != 0) {
1032 printk(KERN_ERR DRV_MODULE_NAME
1033 ": %s fs_mii_connect failed.\n", ndev->name);
1034 goto err;
1035 }
1036
1037 return ndev;
1038
1039 err:
1040 if (ndev != NULL) {
1041
1042 if (registered)
1043 unregister_netdev(ndev);
1044
1045 if (fep != NULL) {
1046 (*fep->ops->free_bd)(ndev);
1047 (*fep->ops->cleanup_data)(ndev);
1048 }
1049
1050 free_netdev(ndev);
1051 }
1052
1053 dev_set_drvdata(dev, NULL);
1054
1055 return ERR_PTR(err);
1056}
1057
1058static int fs_cleanup_instance(struct net_device *ndev)
1059{
1060 struct fs_enet_private *fep;
1061 const struct fs_platform_info *fpi;
1062 struct device *dev;
1063
1064 if (ndev == NULL)
1065 return -EINVAL;
1066
1067 fep = netdev_priv(ndev);
1068 if (fep == NULL)
1069 return -EINVAL;
1070
1071 fpi = fep->fpi;
1072
1073 fs_mii_disconnect(ndev);
1074
1075 unregister_netdev(ndev);
1076
1077 dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t),
1078 fep->ring_base, fep->ring_mem_addr);
1079
1080 /* reset it */
1081 (*fep->ops->cleanup_data)(ndev);
1082
1083 dev = fep->dev;
1084 if (dev != NULL) {
1085 dev_set_drvdata(dev, NULL);
1086 fep->dev = NULL;
1087 }
1088
1089 free_netdev(ndev);
1090
1091 return 0;
1092}
1093
1094/**************************************************************************************/
1095
1096/* handy pointer to the immap */
1097void *fs_enet_immap = NULL;
1098
1099static int setup_immap(void)
1100{
1101 phys_addr_t paddr = 0;
1102 unsigned long size = 0;
1103
1104#ifdef CONFIG_CPM1
1105 paddr = IMAP_ADDR;
1106 size = 0x10000; /* map 64K */
1107#endif
1108
1109#ifdef CONFIG_CPM2
1110 paddr = CPM_MAP_ADDR;
1111 size = 0x40000; /* map 256 K */
1112#endif
1113 fs_enet_immap = ioremap(paddr, size);
1114 if (fs_enet_immap == NULL)
1115 return -EBADF; /* XXX ahem; maybe just BUG_ON? */
1116
1117 return 0;
1118}
1119
1120static void cleanup_immap(void)
1121{
1122 if (fs_enet_immap != NULL) {
1123 iounmap(fs_enet_immap);
1124 fs_enet_immap = NULL;
1125 }
1126}
1127
1128/**************************************************************************************/
1129
1130static int __devinit fs_enet_probe(struct device *dev)
1131{
1132 struct net_device *ndev;
1133
1134 /* no fixup - no device */
1135 if (dev->platform_data == NULL) {
1136 printk(KERN_INFO "fs_enet: "
1137 "probe called with no platform data; "
1138 "remove unused devices\n");
1139 return -ENODEV;
1140 }
1141
1142 ndev = fs_init_instance(dev, dev->platform_data);
1143 if (IS_ERR(ndev))
1144 return PTR_ERR(ndev);
1145 return 0;
1146}
1147
1148static int fs_enet_remove(struct device *dev)
1149{
1150 return fs_cleanup_instance(dev_get_drvdata(dev));
1151}
1152
1153static struct device_driver fs_enet_fec_driver = {
1154 .name = "fsl-cpm-fec",
1155 .bus = &platform_bus_type,
1156 .probe = fs_enet_probe,
1157 .remove = fs_enet_remove,
1158#ifdef CONFIG_PM
1159/* .suspend = fs_enet_suspend, TODO */
1160/* .resume = fs_enet_resume, TODO */
1161#endif
1162};
1163
1164static struct device_driver fs_enet_scc_driver = {
1165 .name = "fsl-cpm-scc",
1166 .bus = &platform_bus_type,
1167 .probe = fs_enet_probe,
1168 .remove = fs_enet_remove,
1169#ifdef CONFIG_PM
1170/* .suspend = fs_enet_suspend, TODO */
1171/* .resume = fs_enet_resume, TODO */
1172#endif
1173};
1174
1175static struct device_driver fs_enet_fcc_driver = {
1176 .name = "fsl-cpm-fcc",
1177 .bus = &platform_bus_type,
1178 .probe = fs_enet_probe,
1179 .remove = fs_enet_remove,
1180#ifdef CONFIG_PM
1181/* .suspend = fs_enet_suspend, TODO */
1182/* .resume = fs_enet_resume, TODO */
1183#endif
1184};
1185
1186static int __init fs_init(void)
1187{
1188 int r;
1189
1190 printk(KERN_INFO
1191 "%s", version);
1192
1193 r = setup_immap();
1194 if (r != 0)
1195 return r;
1196 r = driver_register(&fs_enet_fec_driver);
1197 if (r != 0)
1198 goto err;
1199
1200 r = driver_register(&fs_enet_fcc_driver);
1201 if (r != 0)
1202 goto err;
1203
1204 r = driver_register(&fs_enet_scc_driver);
1205 if (r != 0)
1206 goto err;
1207
1208 return 0;
1209err:
1210 cleanup_immap();
1211 return r;
1212
1213}
1214
1215static void __exit fs_cleanup(void)
1216{
1217 driver_unregister(&fs_enet_fec_driver);
1218 driver_unregister(&fs_enet_fcc_driver);
1219 driver_unregister(&fs_enet_scc_driver);
1220 cleanup_immap();
1221}
1222
1223/**************************************************************************************/
1224
1225module_init(fs_init);
1226module_exit(fs_cleanup);
diff --git a/drivers/net/fs_enet/fs_enet-mii.c b/drivers/net/fs_enet/fs_enet-mii.c
new file mode 100644
index 000000000000..c6770377ef87
--- /dev/null
+++ b/drivers/net/fs_enet/fs_enet-mii.c
@@ -0,0 +1,507 @@
1/*
2 * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
3 *
4 * Copyright (c) 2003 Intracom S.A.
5 * by Pantelis Antoniou <panto@intracom.gr>
6 *
7 * 2005 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
9 *
10 * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com>
11 * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se>
12 *
13 * This file is licensed under the terms of the GNU General Public License
14 * version 2. This program is licensed "as is" without any warranty of any
15 * kind, whether express or implied.
16 */
17
18
19#include <linux/config.h>
20#include <linux/module.h>
21#include <linux/types.h>
22#include <linux/kernel.h>
23#include <linux/sched.h>
24#include <linux/string.h>
25#include <linux/ptrace.h>
26#include <linux/errno.h>
27#include <linux/ioport.h>
28#include <linux/slab.h>
29#include <linux/interrupt.h>
30#include <linux/pci.h>
31#include <linux/init.h>
32#include <linux/delay.h>
33#include <linux/netdevice.h>
34#include <linux/etherdevice.h>
35#include <linux/skbuff.h>
36#include <linux/spinlock.h>
37#include <linux/mii.h>
38#include <linux/ethtool.h>
39#include <linux/bitops.h>
40
41#include <asm/pgtable.h>
42#include <asm/irq.h>
43#include <asm/uaccess.h>
44
45#include "fs_enet.h"
46
47/*************************************************/
48
49/*
50 * Generic PHY support.
51 * Should work for all PHYs, but link change is detected by polling
52 */
53
54static void generic_timer_callback(unsigned long data)
55{
56 struct net_device *dev = (struct net_device *)data;
57 struct fs_enet_private *fep = netdev_priv(dev);
58
59 fep->phy_timer_list.expires = jiffies + HZ / 2;
60
61 add_timer(&fep->phy_timer_list);
62
63 fs_mii_link_status_change_check(dev, 0);
64}
65
66static void generic_startup(struct net_device *dev)
67{
68 struct fs_enet_private *fep = netdev_priv(dev);
69
70 fep->phy_timer_list.expires = jiffies + HZ / 2; /* every 500ms */
71 fep->phy_timer_list.data = (unsigned long)dev;
72 fep->phy_timer_list.function = generic_timer_callback;
73 add_timer(&fep->phy_timer_list);
74}
75
76static void generic_shutdown(struct net_device *dev)
77{
78 struct fs_enet_private *fep = netdev_priv(dev);
79
80 del_timer_sync(&fep->phy_timer_list);
81}
82
83/* ------------------------------------------------------------------------- */
84/* The Davicom DM9161 is used on the NETTA board */
85
86/* register definitions */
87
88#define MII_DM9161_ANAR 4 /* Aux. Config Register */
89#define MII_DM9161_ACR 16 /* Aux. Config Register */
90#define MII_DM9161_ACSR 17 /* Aux. Config/Status Register */
91#define MII_DM9161_10TCSR 18 /* 10BaseT Config/Status Reg. */
92#define MII_DM9161_INTR 21 /* Interrupt Register */
93#define MII_DM9161_RECR 22 /* Receive Error Counter Reg. */
94#define MII_DM9161_DISCR 23 /* Disconnect Counter Register */
95
96static void dm9161_startup(struct net_device *dev)
97{
98 struct fs_enet_private *fep = netdev_priv(dev);
99
100 fs_mii_write(dev, fep->mii_if.phy_id, MII_DM9161_INTR, 0x0000);
101 /* Start autonegotiation */
102 fs_mii_write(dev, fep->mii_if.phy_id, MII_BMCR, 0x1200);
103
104 set_current_state(TASK_UNINTERRUPTIBLE);
105 schedule_timeout(HZ*8);
106}
107
108static void dm9161_ack_int(struct net_device *dev)
109{
110 struct fs_enet_private *fep = netdev_priv(dev);
111
112 fs_mii_read(dev, fep->mii_if.phy_id, MII_DM9161_INTR);
113}
114
115static void dm9161_shutdown(struct net_device *dev)
116{
117 struct fs_enet_private *fep = netdev_priv(dev);
118
119 fs_mii_write(dev, fep->mii_if.phy_id, MII_DM9161_INTR, 0x0f00);
120}
121
122/**********************************************************************************/
123
124static const struct phy_info phy_info[] = {
125 {
126 .id = 0x00181b88,
127 .name = "DM9161",
128 .startup = dm9161_startup,
129 .ack_int = dm9161_ack_int,
130 .shutdown = dm9161_shutdown,
131 }, {
132 .id = 0,
133 .name = "GENERIC",
134 .startup = generic_startup,
135 .shutdown = generic_shutdown,
136 },
137};
138
139/**********************************************************************************/
140
141static int phy_id_detect(struct net_device *dev)
142{
143 struct fs_enet_private *fep = netdev_priv(dev);
144 const struct fs_platform_info *fpi = fep->fpi;
145 struct fs_enet_mii_bus *bus = fep->mii_bus;
146 int i, r, start, end, phytype, physubtype;
147 const struct phy_info *phy;
148 int phy_hwid, phy_id;
149
150 phy_hwid = -1;
151 fep->phy = NULL;
152
153 /* auto-detect? */
154 if (fpi->phy_addr == -1) {
155 start = 1;
156 end = 32;
157 } else { /* direct */
158 start = fpi->phy_addr;
159 end = start + 1;
160 }
161
162 for (phy_id = start; phy_id < end; phy_id++) {
163 /* skip already used phy addresses on this bus */
164 if (bus->usage_map & (1 << phy_id))
165 continue;
166 r = fs_mii_read(dev, phy_id, MII_PHYSID1);
167 if (r == -1 || (phytype = (r & 0xffff)) == 0xffff)
168 continue;
169 r = fs_mii_read(dev, phy_id, MII_PHYSID2);
170 if (r == -1 || (physubtype = (r & 0xffff)) == 0xffff)
171 continue;
172 phy_hwid = (phytype << 16) | physubtype;
173 if (phy_hwid != -1)
174 break;
175 }
176
177 if (phy_hwid == -1) {
178 printk(KERN_ERR DRV_MODULE_NAME
179 ": %s No PHY detected! range=0x%02x-0x%02x\n",
180 dev->name, start, end);
181 return -1;
182 }
183
184 for (i = 0, phy = phy_info; i < ARRAY_SIZE(phy_info); i++, phy++)
185 if (phy->id == (phy_hwid >> 4) || phy->id == 0)
186 break;
187
188 if (i >= ARRAY_SIZE(phy_info)) {
189 printk(KERN_ERR DRV_MODULE_NAME
190 ": %s PHY id 0x%08x is not supported!\n",
191 dev->name, phy_hwid);
192 return -1;
193 }
194
195 fep->phy = phy;
196
197 /* mark this address as used */
198 bus->usage_map |= (1 << phy_id);
199
200 printk(KERN_INFO DRV_MODULE_NAME
201 ": %s Phy @ 0x%x, type %s (0x%08x)%s\n",
202 dev->name, phy_id, fep->phy->name, phy_hwid,
203 fpi->phy_addr == -1 ? " (auto-detected)" : "");
204
205 return phy_id;
206}
207
208void fs_mii_startup(struct net_device *dev)
209{
210 struct fs_enet_private *fep = netdev_priv(dev);
211
212 if (fep->phy->startup)
213 (*fep->phy->startup) (dev);
214}
215
216void fs_mii_shutdown(struct net_device *dev)
217{
218 struct fs_enet_private *fep = netdev_priv(dev);
219
220 if (fep->phy->shutdown)
221 (*fep->phy->shutdown) (dev);
222}
223
224void fs_mii_ack_int(struct net_device *dev)
225{
226 struct fs_enet_private *fep = netdev_priv(dev);
227
228 if (fep->phy->ack_int)
229 (*fep->phy->ack_int) (dev);
230}
231
232#define MII_LINK 0x0001
233#define MII_HALF 0x0002
234#define MII_FULL 0x0004
235#define MII_BASE4 0x0008
236#define MII_10M 0x0010
237#define MII_100M 0x0020
238#define MII_1G 0x0040
239#define MII_10G 0x0080
240
241/* return full mii info at one gulp, with a usable form */
242static unsigned int mii_full_status(struct mii_if_info *mii)
243{
244 unsigned int status;
245 int bmsr, adv, lpa, neg;
246 struct fs_enet_private* fep = netdev_priv(mii->dev);
247
248 /* first, a dummy read, needed to latch some MII phys */
249 (void)mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);
250 bmsr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);
251
252 /* no link */
253 if ((bmsr & BMSR_LSTATUS) == 0)
254 return 0;
255
256 status = MII_LINK;
257
258 /* Lets look what ANEG says if it's supported - otherwize we shall
259 take the right values from the platform info*/
260 if(!mii->force_media) {
261 /* autoneg not completed; don't bother */
262 if ((bmsr & BMSR_ANEGCOMPLETE) == 0)
263 return 0;
264
265 adv = (*mii->mdio_read)(mii->dev, mii->phy_id, MII_ADVERTISE);
266 lpa = (*mii->mdio_read)(mii->dev, mii->phy_id, MII_LPA);
267
268 neg = lpa & adv;
269 } else {
270 neg = fep->fpi->bus_info->lpa;
271 }
272
273 if (neg & LPA_100FULL)
274 status |= MII_FULL | MII_100M;
275 else if (neg & LPA_100BASE4)
276 status |= MII_FULL | MII_BASE4 | MII_100M;
277 else if (neg & LPA_100HALF)
278 status |= MII_HALF | MII_100M;
279 else if (neg & LPA_10FULL)
280 status |= MII_FULL | MII_10M;
281 else
282 status |= MII_HALF | MII_10M;
283
284 return status;
285}
286
287void fs_mii_link_status_change_check(struct net_device *dev, int init_media)
288{
289 struct fs_enet_private *fep = netdev_priv(dev);
290 struct mii_if_info *mii = &fep->mii_if;
291 unsigned int mii_status;
292 int ok_to_print, link, duplex, speed;
293 unsigned long flags;
294
295 ok_to_print = netif_msg_link(fep);
296
297 mii_status = mii_full_status(mii);
298
299 if (!init_media && mii_status == fep->last_mii_status)
300 return;
301
302 fep->last_mii_status = mii_status;
303
304 link = !!(mii_status & MII_LINK);
305 duplex = !!(mii_status & MII_FULL);
306 speed = (mii_status & MII_100M) ? 100 : 10;
307
308 if (link == 0) {
309 netif_carrier_off(mii->dev);
310 netif_stop_queue(dev);
311 if (!init_media) {
312 spin_lock_irqsave(&fep->lock, flags);
313 (*fep->ops->stop)(dev);
314 spin_unlock_irqrestore(&fep->lock, flags);
315 }
316
317 if (ok_to_print)
318 printk(KERN_INFO "%s: link down\n", mii->dev->name);
319
320 } else {
321
322 mii->full_duplex = duplex;
323
324 netif_carrier_on(mii->dev);
325
326 spin_lock_irqsave(&fep->lock, flags);
327 fep->duplex = duplex;
328 fep->speed = speed;
329 (*fep->ops->restart)(dev);
330 spin_unlock_irqrestore(&fep->lock, flags);
331
332 netif_start_queue(dev);
333
334 if (ok_to_print)
335 printk(KERN_INFO "%s: link up, %dMbps, %s-duplex\n",
336 dev->name, speed, duplex ? "full" : "half");
337 }
338}
339
340/**********************************************************************************/
341
342int fs_mii_read(struct net_device *dev, int phy_id, int location)
343{
344 struct fs_enet_private *fep = netdev_priv(dev);
345 struct fs_enet_mii_bus *bus = fep->mii_bus;
346
347 unsigned long flags;
348 int ret;
349
350 spin_lock_irqsave(&bus->mii_lock, flags);
351 ret = (*bus->mii_read)(bus, phy_id, location);
352 spin_unlock_irqrestore(&bus->mii_lock, flags);
353
354 return ret;
355}
356
357void fs_mii_write(struct net_device *dev, int phy_id, int location, int value)
358{
359 struct fs_enet_private *fep = netdev_priv(dev);
360 struct fs_enet_mii_bus *bus = fep->mii_bus;
361 unsigned long flags;
362
363 spin_lock_irqsave(&bus->mii_lock, flags);
364 (*bus->mii_write)(bus, phy_id, location, value);
365 spin_unlock_irqrestore(&bus->mii_lock, flags);
366}
367
368/*****************************************************************************/
369
370/* list of all registered mii buses */
371static LIST_HEAD(fs_mii_bus_list);
372
373static struct fs_enet_mii_bus *lookup_bus(int method, int id)
374{
375 struct list_head *ptr;
376 struct fs_enet_mii_bus *bus;
377
378 list_for_each(ptr, &fs_mii_bus_list) {
379 bus = list_entry(ptr, struct fs_enet_mii_bus, list);
380 if (bus->bus_info->method == method &&
381 bus->bus_info->id == id)
382 return bus;
383 }
384 return NULL;
385}
386
387static struct fs_enet_mii_bus *create_bus(const struct fs_mii_bus_info *bi)
388{
389 struct fs_enet_mii_bus *bus;
390 int ret = 0;
391
392 bus = kmalloc(sizeof(*bus), GFP_KERNEL);
393 if (bus == NULL) {
394 ret = -ENOMEM;
395 goto err;
396 }
397 memset(bus, 0, sizeof(*bus));
398 spin_lock_init(&bus->mii_lock);
399 bus->bus_info = bi;
400 bus->refs = 0;
401 bus->usage_map = 0;
402
403 /* perform initialization */
404 switch (bi->method) {
405
406 case fsmii_fixed:
407 ret = fs_mii_fixed_init(bus);
408 if (ret != 0)
409 goto err;
410 break;
411
412 case fsmii_bitbang:
413 ret = fs_mii_bitbang_init(bus);
414 if (ret != 0)
415 goto err;
416 break;
417#ifdef CONFIG_FS_ENET_HAS_FEC
418 case fsmii_fec:
419 ret = fs_mii_fec_init(bus);
420 if (ret != 0)
421 goto err;
422 break;
423#endif
424 default:
425 ret = -EINVAL;
426 goto err;
427 }
428
429 list_add(&bus->list, &fs_mii_bus_list);
430
431 return bus;
432
433err:
434 if (bus)
435 kfree(bus);
436 return ERR_PTR(ret);
437}
438
439static void destroy_bus(struct fs_enet_mii_bus *bus)
440{
441 /* remove from bus list */
442 list_del(&bus->list);
443
444 /* nothing more needed */
445 kfree(bus);
446}
447
448int fs_mii_connect(struct net_device *dev)
449{
450 struct fs_enet_private *fep = netdev_priv(dev);
451 const struct fs_platform_info *fpi = fep->fpi;
452 struct fs_enet_mii_bus *bus = NULL;
453
454 /* check method validity */
455 switch (fpi->bus_info->method) {
456 case fsmii_fixed:
457 case fsmii_bitbang:
458 break;
459#ifdef CONFIG_FS_ENET_HAS_FEC
460 case fsmii_fec:
461 break;
462#endif
463 default:
464 printk(KERN_ERR DRV_MODULE_NAME
465 ": %s Unknown MII bus method (%d)!\n",
466 dev->name, fpi->bus_info->method);
467 return -EINVAL;
468 }
469
470 bus = lookup_bus(fpi->bus_info->method, fpi->bus_info->id);
471
472 /* if not found create new bus */
473 if (bus == NULL) {
474 bus = create_bus(fpi->bus_info);
475 if (IS_ERR(bus)) {
476 printk(KERN_ERR DRV_MODULE_NAME
477 ": %s MII bus creation failure!\n", dev->name);
478 return PTR_ERR(bus);
479 }
480 }
481
482 bus->refs++;
483
484 fep->mii_bus = bus;
485
486 fep->mii_if.dev = dev;
487 fep->mii_if.phy_id_mask = 0x1f;
488 fep->mii_if.reg_num_mask = 0x1f;
489 fep->mii_if.mdio_read = fs_mii_read;
490 fep->mii_if.mdio_write = fs_mii_write;
491 fep->mii_if.force_media = fpi->bus_info->disable_aneg;
492 fep->mii_if.phy_id = phy_id_detect(dev);
493
494 return 0;
495}
496
497void fs_mii_disconnect(struct net_device *dev)
498{
499 struct fs_enet_private *fep = netdev_priv(dev);
500 struct fs_enet_mii_bus *bus = NULL;
501
502 bus = fep->mii_bus;
503 fep->mii_bus = NULL;
504
505 if (--bus->refs <= 0)
506 destroy_bus(bus);
507}
diff --git a/drivers/net/fs_enet/fs_enet.h b/drivers/net/fs_enet/fs_enet.h
new file mode 100644
index 000000000000..1105543b9d88
--- /dev/null
+++ b/drivers/net/fs_enet/fs_enet.h
@@ -0,0 +1,245 @@
1#ifndef FS_ENET_H
2#define FS_ENET_H
3
4#include <linux/mii.h>
5#include <linux/netdevice.h>
6#include <linux/types.h>
7#include <linux/version.h>
8#include <linux/list.h>
9
10#include <linux/fs_enet_pd.h>
11
12#include <asm/dma-mapping.h>
13
14#ifdef CONFIG_CPM1
15#include <asm/commproc.h>
16#endif
17
18#ifdef CONFIG_CPM2
19#include <asm/cpm2.h>
20#endif
21
22/* hw driver ops */
23struct fs_ops {
24 int (*setup_data)(struct net_device *dev);
25 int (*allocate_bd)(struct net_device *dev);
26 void (*free_bd)(struct net_device *dev);
27 void (*cleanup_data)(struct net_device *dev);
28 void (*set_multicast_list)(struct net_device *dev);
29 void (*restart)(struct net_device *dev);
30 void (*stop)(struct net_device *dev);
31 void (*pre_request_irq)(struct net_device *dev, int irq);
32 void (*post_free_irq)(struct net_device *dev, int irq);
33 void (*napi_clear_rx_event)(struct net_device *dev);
34 void (*napi_enable_rx)(struct net_device *dev);
35 void (*napi_disable_rx)(struct net_device *dev);
36 void (*rx_bd_done)(struct net_device *dev);
37 void (*tx_kickstart)(struct net_device *dev);
38 u32 (*get_int_events)(struct net_device *dev);
39 void (*clear_int_events)(struct net_device *dev, u32 int_events);
40 void (*ev_error)(struct net_device *dev, u32 int_events);
41 int (*get_regs)(struct net_device *dev, void *p, int *sizep);
42 int (*get_regs_len)(struct net_device *dev);
43 void (*tx_restart)(struct net_device *dev);
44};
45
46struct phy_info {
47 unsigned int id;
48 const char *name;
49 void (*startup) (struct net_device * dev);
50 void (*shutdown) (struct net_device * dev);
51 void (*ack_int) (struct net_device * dev);
52};
53
54/* The FEC stores dest/src/type, data, and checksum for receive packets.
55 */
56#define MAX_MTU 1508 /* Allow fullsized pppoe packets over VLAN */
57#define MIN_MTU 46 /* this is data size */
58#define CRC_LEN 4
59
60#define PKT_MAXBUF_SIZE (MAX_MTU+ETH_HLEN+CRC_LEN)
61#define PKT_MINBUF_SIZE (MIN_MTU+ETH_HLEN+CRC_LEN)
62
63/* Must be a multiple of 32 (to cover both FEC & FCC) */
64#define PKT_MAXBLR_SIZE ((PKT_MAXBUF_SIZE + 31) & ~31)
65/* This is needed so that invalidate_xxx wont invalidate too much */
66#define ENET_RX_FRSIZE L1_CACHE_ALIGN(PKT_MAXBUF_SIZE)
67
68struct fs_enet_mii_bus {
69 struct list_head list;
70 spinlock_t mii_lock;
71 const struct fs_mii_bus_info *bus_info;
72 int refs;
73 u32 usage_map;
74
75 int (*mii_read)(struct fs_enet_mii_bus *bus,
76 int phy_id, int location);
77
78 void (*mii_write)(struct fs_enet_mii_bus *bus,
79 int phy_id, int location, int value);
80
81 union {
82 struct {
83 unsigned int mii_speed;
84 void *fecp;
85 } fec;
86
87 struct {
88 /* note that the actual port size may */
89 /* be different; cpm(s) handle it OK */
90 u8 mdio_msk;
91 u8 *mdio_dir;
92 u8 *mdio_dat;
93 u8 mdc_msk;
94 u8 *mdc_dir;
95 u8 *mdc_dat;
96 } bitbang;
97
98 struct {
99 u16 lpa;
100 } fixed;
101 };
102};
103
104int fs_mii_bitbang_init(struct fs_enet_mii_bus *bus);
105int fs_mii_fixed_init(struct fs_enet_mii_bus *bus);
106int fs_mii_fec_init(struct fs_enet_mii_bus *bus);
107
108struct fs_enet_private {
109 struct device *dev; /* pointer back to the device (must be initialized first) */
110 spinlock_t lock; /* during all ops except TX pckt processing */
111 spinlock_t tx_lock; /* during fs_start_xmit and fs_tx */
112 const struct fs_platform_info *fpi;
113 const struct fs_ops *ops;
114 int rx_ring, tx_ring;
115 dma_addr_t ring_mem_addr;
116 void *ring_base;
117 struct sk_buff **rx_skbuff;
118 struct sk_buff **tx_skbuff;
119 cbd_t *rx_bd_base; /* Address of Rx and Tx buffers. */
120 cbd_t *tx_bd_base;
121 cbd_t *dirty_tx; /* ring entries to be free()ed. */
122 cbd_t *cur_rx;
123 cbd_t *cur_tx;
124 int tx_free;
125 struct net_device_stats stats;
126 struct timer_list phy_timer_list;
127 const struct phy_info *phy;
128 u32 msg_enable;
129 struct mii_if_info mii_if;
130 unsigned int last_mii_status;
131 struct fs_enet_mii_bus *mii_bus;
132 int interrupt;
133
134 int duplex, speed; /* current settings */
135
136 /* event masks */
137 u32 ev_napi_rx; /* mask of NAPI rx events */
138 u32 ev_rx; /* rx event mask */
139 u32 ev_tx; /* tx event mask */
140 u32 ev_err; /* error event mask */
141
142 u16 bd_rx_empty; /* mask of BD rx empty */
143 u16 bd_rx_err; /* mask of BD rx errors */
144
145 union {
146 struct {
147 int idx; /* FEC1 = 0, FEC2 = 1 */
148 void *fecp; /* hw registers */
149 u32 hthi, htlo; /* state for multicast */
150 } fec;
151
152 struct {
153 int idx; /* FCC1-3 = 0-2 */
154 void *fccp; /* hw registers */
155 void *ep; /* parameter ram */
156 void *fcccp; /* hw registers cont. */
157 void *mem; /* FCC DPRAM */
158 u32 gaddrh, gaddrl; /* group address */
159 } fcc;
160
161 struct {
162 int idx; /* FEC1 = 0, FEC2 = 1 */
163 void *sccp; /* hw registers */
164 void *ep; /* parameter ram */
165 u32 hthi, htlo; /* state for multicast */
166 } scc;
167
168 };
169};
170
171/***************************************************************************/
172
173int fs_mii_read(struct net_device *dev, int phy_id, int location);
174void fs_mii_write(struct net_device *dev, int phy_id, int location, int value);
175
176void fs_mii_startup(struct net_device *dev);
177void fs_mii_shutdown(struct net_device *dev);
178void fs_mii_ack_int(struct net_device *dev);
179
180void fs_mii_link_status_change_check(struct net_device *dev, int init_media);
181
182void fs_init_bds(struct net_device *dev);
183void fs_cleanup_bds(struct net_device *dev);
184
185/***************************************************************************/
186
187#define DRV_MODULE_NAME "fs_enet"
188#define PFX DRV_MODULE_NAME ": "
189#define DRV_MODULE_VERSION "1.0"
190#define DRV_MODULE_RELDATE "Aug 8, 2005"
191
192/***************************************************************************/
193
194int fs_enet_platform_init(void);
195void fs_enet_platform_cleanup(void);
196
197/***************************************************************************/
198
199/* buffer descriptor access macros */
200
201/* access macros */
202#if defined(CONFIG_CPM1)
203/* for a a CPM1 __raw_xxx's are sufficient */
204#define __cbd_out32(addr, x) __raw_writel(x, addr)
205#define __cbd_out16(addr, x) __raw_writew(x, addr)
206#define __cbd_in32(addr) __raw_readl(addr)
207#define __cbd_in16(addr) __raw_readw(addr)
208#else
209/* for others play it safe */
210#define __cbd_out32(addr, x) out_be32(addr, x)
211#define __cbd_out16(addr, x) out_be16(addr, x)
212#define __cbd_in32(addr) in_be32(addr)
213#define __cbd_in16(addr) in_be16(addr)
214#endif
215
216/* write */
217#define CBDW_SC(_cbd, _sc) __cbd_out16(&(_cbd)->cbd_sc, (_sc))
218#define CBDW_DATLEN(_cbd, _datlen) __cbd_out16(&(_cbd)->cbd_datlen, (_datlen))
219#define CBDW_BUFADDR(_cbd, _bufaddr) __cbd_out32(&(_cbd)->cbd_bufaddr, (_bufaddr))
220
221/* read */
222#define CBDR_SC(_cbd) __cbd_in16(&(_cbd)->cbd_sc)
223#define CBDR_DATLEN(_cbd) __cbd_in16(&(_cbd)->cbd_datlen)
224#define CBDR_BUFADDR(_cbd) __cbd_in32(&(_cbd)->cbd_bufaddr)
225
226/* set bits */
227#define CBDS_SC(_cbd, _sc) CBDW_SC(_cbd, CBDR_SC(_cbd) | (_sc))
228
229/* clear bits */
230#define CBDC_SC(_cbd, _sc) CBDW_SC(_cbd, CBDR_SC(_cbd) & ~(_sc))
231
232/*******************************************************************/
233
234extern const struct fs_ops fs_fec_ops;
235extern const struct fs_ops fs_fcc_ops;
236extern const struct fs_ops fs_scc_ops;
237
238/*******************************************************************/
239
240/* handy pointer to the immap */
241extern void *fs_enet_immap;
242
243/*******************************************************************/
244
245#endif
diff --git a/drivers/net/fs_enet/mac-fcc.c b/drivers/net/fs_enet/mac-fcc.c
new file mode 100644
index 000000000000..a940b96433c7
--- /dev/null
+++ b/drivers/net/fs_enet/mac-fcc.c
@@ -0,0 +1,578 @@
1/*
2 * FCC driver for Motorola MPC82xx (PQ2).
3 *
4 * Copyright (c) 2003 Intracom S.A.
5 * by Pantelis Antoniou <panto@intracom.gr>
6 *
7 * 2005 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
9 *
10 * This file is licensed under the terms of the GNU General Public License
11 * version 2. This program is licensed "as is" without any warranty of any
12 * kind, whether express or implied.
13 */
14
15#include <linux/config.h>
16#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/types.h>
19#include <linux/sched.h>
20#include <linux/string.h>
21#include <linux/ptrace.h>
22#include <linux/errno.h>
23#include <linux/ioport.h>
24#include <linux/slab.h>
25#include <linux/interrupt.h>
26#include <linux/pci.h>
27#include <linux/init.h>
28#include <linux/delay.h>
29#include <linux/netdevice.h>
30#include <linux/etherdevice.h>
31#include <linux/skbuff.h>
32#include <linux/spinlock.h>
33#include <linux/mii.h>
34#include <linux/ethtool.h>
35#include <linux/bitops.h>
36#include <linux/fs.h>
37
38#include <asm/immap_cpm2.h>
39#include <asm/mpc8260.h>
40#include <asm/cpm2.h>
41
42#include <asm/pgtable.h>
43#include <asm/irq.h>
44#include <asm/uaccess.h>
45
46#include "fs_enet.h"
47
48/*************************************************/
49
50/* FCC access macros */
51
52#define __fcc_out32(addr, x) out_be32((unsigned *)addr, x)
53#define __fcc_out16(addr, x) out_be16((unsigned short *)addr, x)
54#define __fcc_out8(addr, x) out_8((unsigned char *)addr, x)
55#define __fcc_in32(addr) in_be32((unsigned *)addr)
56#define __fcc_in16(addr) in_be16((unsigned short *)addr)
57#define __fcc_in8(addr) in_8((unsigned char *)addr)
58
59/* parameter space */
60
61/* write, read, set bits, clear bits */
62#define W32(_p, _m, _v) __fcc_out32(&(_p)->_m, (_v))
63#define R32(_p, _m) __fcc_in32(&(_p)->_m)
64#define S32(_p, _m, _v) W32(_p, _m, R32(_p, _m) | (_v))
65#define C32(_p, _m, _v) W32(_p, _m, R32(_p, _m) & ~(_v))
66
67#define W16(_p, _m, _v) __fcc_out16(&(_p)->_m, (_v))
68#define R16(_p, _m) __fcc_in16(&(_p)->_m)
69#define S16(_p, _m, _v) W16(_p, _m, R16(_p, _m) | (_v))
70#define C16(_p, _m, _v) W16(_p, _m, R16(_p, _m) & ~(_v))
71
72#define W8(_p, _m, _v) __fcc_out8(&(_p)->_m, (_v))
73#define R8(_p, _m) __fcc_in8(&(_p)->_m)
74#define S8(_p, _m, _v) W8(_p, _m, R8(_p, _m) | (_v))
75#define C8(_p, _m, _v) W8(_p, _m, R8(_p, _m) & ~(_v))
76
77/*************************************************/
78
79#define FCC_MAX_MULTICAST_ADDRS 64
80
81#define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18))
82#define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | (VAL & 0xffff))
83#define mk_mii_end 0
84
85#define MAX_CR_CMD_LOOPS 10000
86
87static inline int fcc_cr_cmd(struct fs_enet_private *fep, u32 mcn, u32 op)
88{
89 const struct fs_platform_info *fpi = fep->fpi;
90
91 cpm2_map_t *immap = fs_enet_immap;
92 cpm_cpm2_t *cpmp = &immap->im_cpm;
93 u32 v;
94 int i;
95
96 /* Currently I don't know what feature call will look like. But
97 I guess there'd be something like do_cpm_cmd() which will require page & sblock */
98 v = mk_cr_cmd(fpi->cp_page, fpi->cp_block, mcn, op);
99 W32(cpmp, cp_cpcr, v | CPM_CR_FLG);
100 for (i = 0; i < MAX_CR_CMD_LOOPS; i++)
101 if ((R32(cpmp, cp_cpcr) & CPM_CR_FLG) == 0)
102 break;
103
104 if (i >= MAX_CR_CMD_LOOPS) {
105 printk(KERN_ERR "%s(): Not able to issue CPM command\n",
106 __FUNCTION__);
107 return 1;
108 }
109
110 return 0;
111}
112
113static int do_pd_setup(struct fs_enet_private *fep)
114{
115 struct platform_device *pdev = to_platform_device(fep->dev);
116 struct resource *r;
117
118 /* Fill out IRQ field */
119 fep->interrupt = platform_get_irq(pdev, 0);
120
121 /* Attach the memory for the FCC Parameter RAM */
122 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fcc_pram");
123 fep->fcc.ep = (void *)r->start;
124
125 if (fep->fcc.ep == NULL)
126 return -EINVAL;
127
128 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fcc_regs");
129 fep->fcc.fccp = (void *)r->start;
130
131 if (fep->fcc.fccp == NULL)
132 return -EINVAL;
133
134 fep->fcc.fcccp = (void *)fep->fpi->fcc_regs_c;
135
136 if (fep->fcc.fcccp == NULL)
137 return -EINVAL;
138
139 return 0;
140}
141
142#define FCC_NAPI_RX_EVENT_MSK (FCC_ENET_RXF | FCC_ENET_RXB)
143#define FCC_RX_EVENT (FCC_ENET_RXF)
144#define FCC_TX_EVENT (FCC_ENET_TXB)
145#define FCC_ERR_EVENT_MSK (FCC_ENET_TXE | FCC_ENET_BSY)
146
147static int setup_data(struct net_device *dev)
148{
149 struct fs_enet_private *fep = netdev_priv(dev);
150 const struct fs_platform_info *fpi = fep->fpi;
151
152 fep->fcc.idx = fs_get_fcc_index(fpi->fs_no);
153 if ((unsigned int)fep->fcc.idx >= 3) /* max 3 FCCs */
154 return -EINVAL;
155
156 fep->fcc.mem = (void *)fpi->mem_offset;
157
158 if (do_pd_setup(fep) != 0)
159 return -EINVAL;
160
161 fep->ev_napi_rx = FCC_NAPI_RX_EVENT_MSK;
162 fep->ev_rx = FCC_RX_EVENT;
163 fep->ev_tx = FCC_TX_EVENT;
164 fep->ev_err = FCC_ERR_EVENT_MSK;
165
166 return 0;
167}
168
169static int allocate_bd(struct net_device *dev)
170{
171 struct fs_enet_private *fep = netdev_priv(dev);
172 const struct fs_platform_info *fpi = fep->fpi;
173
174 fep->ring_base = dma_alloc_coherent(fep->dev,
175 (fpi->tx_ring + fpi->rx_ring) *
176 sizeof(cbd_t), &fep->ring_mem_addr,
177 GFP_KERNEL);
178 if (fep->ring_base == NULL)
179 return -ENOMEM;
180
181 return 0;
182}
183
184static void free_bd(struct net_device *dev)
185{
186 struct fs_enet_private *fep = netdev_priv(dev);
187 const struct fs_platform_info *fpi = fep->fpi;
188
189 if (fep->ring_base)
190 dma_free_coherent(fep->dev,
191 (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t),
192 fep->ring_base, fep->ring_mem_addr);
193}
194
195static void cleanup_data(struct net_device *dev)
196{
197 /* nothing */
198}
199
200static void set_promiscuous_mode(struct net_device *dev)
201{
202 struct fs_enet_private *fep = netdev_priv(dev);
203 fcc_t *fccp = fep->fcc.fccp;
204
205 S32(fccp, fcc_fpsmr, FCC_PSMR_PRO);
206}
207
208static void set_multicast_start(struct net_device *dev)
209{
210 struct fs_enet_private *fep = netdev_priv(dev);
211 fcc_enet_t *ep = fep->fcc.ep;
212
213 W32(ep, fen_gaddrh, 0);
214 W32(ep, fen_gaddrl, 0);
215}
216
217static void set_multicast_one(struct net_device *dev, const u8 *mac)
218{
219 struct fs_enet_private *fep = netdev_priv(dev);
220 fcc_enet_t *ep = fep->fcc.ep;
221 u16 taddrh, taddrm, taddrl;
222
223 taddrh = ((u16)mac[5] << 8) | mac[4];
224 taddrm = ((u16)mac[3] << 8) | mac[2];
225 taddrl = ((u16)mac[1] << 8) | mac[0];
226
227 W16(ep, fen_taddrh, taddrh);
228 W16(ep, fen_taddrm, taddrm);
229 W16(ep, fen_taddrl, taddrl);
230 fcc_cr_cmd(fep, 0x0C, CPM_CR_SET_GADDR);
231}
232
233static void set_multicast_finish(struct net_device *dev)
234{
235 struct fs_enet_private *fep = netdev_priv(dev);
236 fcc_t *fccp = fep->fcc.fccp;
237 fcc_enet_t *ep = fep->fcc.ep;
238
239 /* clear promiscuous always */
240 C32(fccp, fcc_fpsmr, FCC_PSMR_PRO);
241
242 /* if all multi or too many multicasts; just enable all */
243 if ((dev->flags & IFF_ALLMULTI) != 0 ||
244 dev->mc_count > FCC_MAX_MULTICAST_ADDRS) {
245
246 W32(ep, fen_gaddrh, 0xffffffff);
247 W32(ep, fen_gaddrl, 0xffffffff);
248 }
249
250 /* read back */
251 fep->fcc.gaddrh = R32(ep, fen_gaddrh);
252 fep->fcc.gaddrl = R32(ep, fen_gaddrl);
253}
254
255static void set_multicast_list(struct net_device *dev)
256{
257 struct dev_mc_list *pmc;
258
259 if ((dev->flags & IFF_PROMISC) == 0) {
260 set_multicast_start(dev);
261 for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next)
262 set_multicast_one(dev, pmc->dmi_addr);
263 set_multicast_finish(dev);
264 } else
265 set_promiscuous_mode(dev);
266}
267
268static void restart(struct net_device *dev)
269{
270 struct fs_enet_private *fep = netdev_priv(dev);
271 const struct fs_platform_info *fpi = fep->fpi;
272 fcc_t *fccp = fep->fcc.fccp;
273 fcc_c_t *fcccp = fep->fcc.fcccp;
274 fcc_enet_t *ep = fep->fcc.ep;
275 dma_addr_t rx_bd_base_phys, tx_bd_base_phys;
276 u16 paddrh, paddrm, paddrl;
277 u16 mem_addr;
278 const unsigned char *mac;
279 int i;
280
281 C32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT);
282
283 /* clear everything (slow & steady does it) */
284 for (i = 0; i < sizeof(*ep); i++)
285 __fcc_out8((char *)ep + i, 0);
286
287 /* get physical address */
288 rx_bd_base_phys = fep->ring_mem_addr;
289 tx_bd_base_phys = rx_bd_base_phys + sizeof(cbd_t) * fpi->rx_ring;
290
291 /* point to bds */
292 W32(ep, fen_genfcc.fcc_rbase, rx_bd_base_phys);
293 W32(ep, fen_genfcc.fcc_tbase, tx_bd_base_phys);
294
295 /* Set maximum bytes per receive buffer.
296 * It must be a multiple of 32.
297 */
298 W16(ep, fen_genfcc.fcc_mrblr, PKT_MAXBLR_SIZE);
299
300 W32(ep, fen_genfcc.fcc_rstate, (CPMFCR_GBL | CPMFCR_EB) << 24);
301 W32(ep, fen_genfcc.fcc_tstate, (CPMFCR_GBL | CPMFCR_EB) << 24);
302
303 /* Allocate space in the reserved FCC area of DPRAM for the
304 * internal buffers. No one uses this space (yet), so we
305 * can do this. Later, we will add resource management for
306 * this area.
307 */
308
309 mem_addr = (u32) fep->fcc.mem; /* de-fixup dpram offset */
310
311 W16(ep, fen_genfcc.fcc_riptr, (mem_addr & 0xffff));
312 W16(ep, fen_genfcc.fcc_tiptr, ((mem_addr + 32) & 0xffff));
313 W16(ep, fen_padptr, mem_addr + 64);
314
315 /* fill with special symbol... */
316 memset(fep->fcc.mem + fpi->dpram_offset + 64, 0x88, 32);
317
318 W32(ep, fen_genfcc.fcc_rbptr, 0);
319 W32(ep, fen_genfcc.fcc_tbptr, 0);
320 W32(ep, fen_genfcc.fcc_rcrc, 0);
321 W32(ep, fen_genfcc.fcc_tcrc, 0);
322 W16(ep, fen_genfcc.fcc_res1, 0);
323 W32(ep, fen_genfcc.fcc_res2, 0);
324
325 /* no CAM */
326 W32(ep, fen_camptr, 0);
327
328 /* Set CRC preset and mask */
329 W32(ep, fen_cmask, 0xdebb20e3);
330 W32(ep, fen_cpres, 0xffffffff);
331
332 W32(ep, fen_crcec, 0); /* CRC Error counter */
333 W32(ep, fen_alec, 0); /* alignment error counter */
334 W32(ep, fen_disfc, 0); /* discard frame counter */
335 W16(ep, fen_retlim, 15); /* Retry limit threshold */
336 W16(ep, fen_pper, 0); /* Normal persistence */
337
338 /* set group address */
339 W32(ep, fen_gaddrh, fep->fcc.gaddrh);
340 W32(ep, fen_gaddrl, fep->fcc.gaddrh);
341
342 /* Clear hash filter tables */
343 W32(ep, fen_iaddrh, 0);
344 W32(ep, fen_iaddrl, 0);
345
346 /* Clear the Out-of-sequence TxBD */
347 W16(ep, fen_tfcstat, 0);
348 W16(ep, fen_tfclen, 0);
349 W32(ep, fen_tfcptr, 0);
350
351 W16(ep, fen_mflr, PKT_MAXBUF_SIZE); /* maximum frame length register */
352 W16(ep, fen_minflr, PKT_MINBUF_SIZE); /* minimum frame length register */
353
354 /* set address */
355 mac = dev->dev_addr;
356 paddrh = ((u16)mac[5] << 8) | mac[4];
357 paddrm = ((u16)mac[3] << 8) | mac[2];
358 paddrl = ((u16)mac[1] << 8) | mac[0];
359
360 W16(ep, fen_paddrh, paddrh);
361 W16(ep, fen_paddrm, paddrm);
362 W16(ep, fen_paddrl, paddrl);
363
364 W16(ep, fen_taddrh, 0);
365 W16(ep, fen_taddrm, 0);
366 W16(ep, fen_taddrl, 0);
367
368 W16(ep, fen_maxd1, 1520); /* maximum DMA1 length */
369 W16(ep, fen_maxd2, 1520); /* maximum DMA2 length */
370
371 /* Clear stat counters, in case we ever enable RMON */
372 W32(ep, fen_octc, 0);
373 W32(ep, fen_colc, 0);
374 W32(ep, fen_broc, 0);
375 W32(ep, fen_mulc, 0);
376 W32(ep, fen_uspc, 0);
377 W32(ep, fen_frgc, 0);
378 W32(ep, fen_ospc, 0);
379 W32(ep, fen_jbrc, 0);
380 W32(ep, fen_p64c, 0);
381 W32(ep, fen_p65c, 0);
382 W32(ep, fen_p128c, 0);
383 W32(ep, fen_p256c, 0);
384 W32(ep, fen_p512c, 0);
385 W32(ep, fen_p1024c, 0);
386
387 W16(ep, fen_rfthr, 0); /* Suggested by manual */
388 W16(ep, fen_rfcnt, 0);
389 W16(ep, fen_cftype, 0);
390
391 fs_init_bds(dev);
392
393 /* adjust to speed (for RMII mode) */
394 if (fpi->use_rmii) {
395 if (fep->speed == 100)
396 C8(fcccp, fcc_gfemr, 0x20);
397 else
398 S8(fcccp, fcc_gfemr, 0x20);
399 }
400
401 fcc_cr_cmd(fep, 0x0c, CPM_CR_INIT_TRX);
402
403 /* clear events */
404 W16(fccp, fcc_fcce, 0xffff);
405
406 /* Enable interrupts we wish to service */
407 W16(fccp, fcc_fccm, FCC_ENET_TXE | FCC_ENET_RXF | FCC_ENET_TXB);
408
409 /* Set GFMR to enable Ethernet operating mode */
410 W32(fccp, fcc_gfmr, FCC_GFMR_TCI | FCC_GFMR_MODE_ENET);
411
412 /* set sync/delimiters */
413 W16(fccp, fcc_fdsr, 0xd555);
414
415 W32(fccp, fcc_fpsmr, FCC_PSMR_ENCRC);
416
417 if (fpi->use_rmii)
418 S32(fccp, fcc_fpsmr, FCC_PSMR_RMII);
419
420 /* adjust to duplex mode */
421 if (fep->duplex)
422 S32(fccp, fcc_fpsmr, FCC_PSMR_FDE | FCC_PSMR_LPB);
423 else
424 C32(fccp, fcc_fpsmr, FCC_PSMR_FDE | FCC_PSMR_LPB);
425
426 S32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT);
427}
428
429static void stop(struct net_device *dev)
430{
431 struct fs_enet_private *fep = netdev_priv(dev);
432 fcc_t *fccp = fep->fcc.fccp;
433
434 /* stop ethernet */
435 C32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT);
436
437 /* clear events */
438 W16(fccp, fcc_fcce, 0xffff);
439
440 /* clear interrupt mask */
441 W16(fccp, fcc_fccm, 0);
442
443 fs_cleanup_bds(dev);
444}
445
446static void pre_request_irq(struct net_device *dev, int irq)
447{
448 /* nothing */
449}
450
451static void post_free_irq(struct net_device *dev, int irq)
452{
453 /* nothing */
454}
455
456static void napi_clear_rx_event(struct net_device *dev)
457{
458 struct fs_enet_private *fep = netdev_priv(dev);
459 fcc_t *fccp = fep->fcc.fccp;
460
461 W16(fccp, fcc_fcce, FCC_NAPI_RX_EVENT_MSK);
462}
463
464static void napi_enable_rx(struct net_device *dev)
465{
466 struct fs_enet_private *fep = netdev_priv(dev);
467 fcc_t *fccp = fep->fcc.fccp;
468
469 S16(fccp, fcc_fccm, FCC_NAPI_RX_EVENT_MSK);
470}
471
472static void napi_disable_rx(struct net_device *dev)
473{
474 struct fs_enet_private *fep = netdev_priv(dev);
475 fcc_t *fccp = fep->fcc.fccp;
476
477 C16(fccp, fcc_fccm, FCC_NAPI_RX_EVENT_MSK);
478}
479
480static void rx_bd_done(struct net_device *dev)
481{
482 /* nothing */
483}
484
485static void tx_kickstart(struct net_device *dev)
486{
487 /* nothing */
488}
489
490static u32 get_int_events(struct net_device *dev)
491{
492 struct fs_enet_private *fep = netdev_priv(dev);
493 fcc_t *fccp = fep->fcc.fccp;
494
495 return (u32)R16(fccp, fcc_fcce);
496}
497
498static void clear_int_events(struct net_device *dev, u32 int_events)
499{
500 struct fs_enet_private *fep = netdev_priv(dev);
501 fcc_t *fccp = fep->fcc.fccp;
502
503 W16(fccp, fcc_fcce, int_events & 0xffff);
504}
505
506static void ev_error(struct net_device *dev, u32 int_events)
507{
508 printk(KERN_WARNING DRV_MODULE_NAME
509 ": %s FS_ENET ERROR(s) 0x%x\n", dev->name, int_events);
510}
511
512int get_regs(struct net_device *dev, void *p, int *sizep)
513{
514 struct fs_enet_private *fep = netdev_priv(dev);
515
516 if (*sizep < sizeof(fcc_t) + sizeof(fcc_c_t) + sizeof(fcc_enet_t))
517 return -EINVAL;
518
519 memcpy_fromio(p, fep->fcc.fccp, sizeof(fcc_t));
520 p = (char *)p + sizeof(fcc_t);
521
522 memcpy_fromio(p, fep->fcc.fcccp, sizeof(fcc_c_t));
523 p = (char *)p + sizeof(fcc_c_t);
524
525 memcpy_fromio(p, fep->fcc.ep, sizeof(fcc_enet_t));
526
527 return 0;
528}
529
530int get_regs_len(struct net_device *dev)
531{
532 return sizeof(fcc_t) + sizeof(fcc_c_t) + sizeof(fcc_enet_t);
533}
534
535/* Some transmit errors cause the transmitter to shut
536 * down. We now issue a restart transmit. Since the
537 * errors close the BD and update the pointers, the restart
538 * _should_ pick up without having to reset any of our
539 * pointers either. Also, To workaround 8260 device erratum
540 * CPM37, we must disable and then re-enable the transmitter
541 * following a Late Collision, Underrun, or Retry Limit error.
542 */
543void tx_restart(struct net_device *dev)
544{
545 struct fs_enet_private *fep = netdev_priv(dev);
546 fcc_t *fccp = fep->fcc.fccp;
547
548 C32(fccp, fcc_gfmr, FCC_GFMR_ENT);
549 udelay(10);
550 S32(fccp, fcc_gfmr, FCC_GFMR_ENT);
551
552 fcc_cr_cmd(fep, 0x0C, CPM_CR_RESTART_TX);
553}
554
555/*************************************************************************/
556
557const struct fs_ops fs_fcc_ops = {
558 .setup_data = setup_data,
559 .cleanup_data = cleanup_data,
560 .set_multicast_list = set_multicast_list,
561 .restart = restart,
562 .stop = stop,
563 .pre_request_irq = pre_request_irq,
564 .post_free_irq = post_free_irq,
565 .napi_clear_rx_event = napi_clear_rx_event,
566 .napi_enable_rx = napi_enable_rx,
567 .napi_disable_rx = napi_disable_rx,
568 .rx_bd_done = rx_bd_done,
569 .tx_kickstart = tx_kickstart,
570 .get_int_events = get_int_events,
571 .clear_int_events = clear_int_events,
572 .ev_error = ev_error,
573 .get_regs = get_regs,
574 .get_regs_len = get_regs_len,
575 .tx_restart = tx_restart,
576 .allocate_bd = allocate_bd,
577 .free_bd = free_bd,
578};
diff --git a/drivers/net/fs_enet/mac-fec.c b/drivers/net/fs_enet/mac-fec.c
new file mode 100644
index 000000000000..5ef4e845a387
--- /dev/null
+++ b/drivers/net/fs_enet/mac-fec.c
@@ -0,0 +1,653 @@
1/*
2 * Freescale Ethernet controllers
3 *
4 * Copyright (c) 2005 Intracom S.A.
5 * by Pantelis Antoniou <panto@intracom.gr>
6 *
7 * 2005 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
9 *
10 * This file is licensed under the terms of the GNU General Public License
11 * version 2. This program is licensed "as is" without any warranty of any
12 * kind, whether express or implied.
13 */
14
15#include <linux/config.h>
16#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/types.h>
19#include <linux/sched.h>
20#include <linux/string.h>
21#include <linux/ptrace.h>
22#include <linux/errno.h>
23#include <linux/ioport.h>
24#include <linux/slab.h>
25#include <linux/interrupt.h>
26#include <linux/pci.h>
27#include <linux/init.h>
28#include <linux/delay.h>
29#include <linux/netdevice.h>
30#include <linux/etherdevice.h>
31#include <linux/skbuff.h>
32#include <linux/spinlock.h>
33#include <linux/mii.h>
34#include <linux/ethtool.h>
35#include <linux/bitops.h>
36#include <linux/fs.h>
37
38#include <asm/irq.h>
39#include <asm/uaccess.h>
40
41#ifdef CONFIG_8xx
42#include <asm/8xx_immap.h>
43#include <asm/pgtable.h>
44#include <asm/mpc8xx.h>
45#include <asm/commproc.h>
46#endif
47
48#include "fs_enet.h"
49
50/*************************************************/
51
52#if defined(CONFIG_CPM1)
53/* for a CPM1 __raw_xxx's are sufficient */
54#define __fs_out32(addr, x) __raw_writel(x, addr)
55#define __fs_out16(addr, x) __raw_writew(x, addr)
56#define __fs_in32(addr) __raw_readl(addr)
57#define __fs_in16(addr) __raw_readw(addr)
58#else
59/* for others play it safe */
60#define __fs_out32(addr, x) out_be32(addr, x)
61#define __fs_out16(addr, x) out_be16(addr, x)
62#define __fs_in32(addr) in_be32(addr)
63#define __fs_in16(addr) in_be16(addr)
64#endif
65
66/* write */
67#define FW(_fecp, _reg, _v) __fs_out32(&(_fecp)->fec_ ## _reg, (_v))
68
69/* read */
70#define FR(_fecp, _reg) __fs_in32(&(_fecp)->fec_ ## _reg)
71
72/* set bits */
73#define FS(_fecp, _reg, _v) FW(_fecp, _reg, FR(_fecp, _reg) | (_v))
74
75/* clear bits */
76#define FC(_fecp, _reg, _v) FW(_fecp, _reg, FR(_fecp, _reg) & ~(_v))
77
78
79/* CRC polynomium used by the FEC for the multicast group filtering */
80#define FEC_CRC_POLY 0x04C11DB7
81
82#define FEC_MAX_MULTICAST_ADDRS 64
83
84/* Interrupt events/masks.
85*/
86#define FEC_ENET_HBERR 0x80000000U /* Heartbeat error */
87#define FEC_ENET_BABR 0x40000000U /* Babbling receiver */
88#define FEC_ENET_BABT 0x20000000U /* Babbling transmitter */
89#define FEC_ENET_GRA 0x10000000U /* Graceful stop complete */
90#define FEC_ENET_TXF 0x08000000U /* Full frame transmitted */
91#define FEC_ENET_TXB 0x04000000U /* A buffer was transmitted */
92#define FEC_ENET_RXF 0x02000000U /* Full frame received */
93#define FEC_ENET_RXB 0x01000000U /* A buffer was received */
94#define FEC_ENET_MII 0x00800000U /* MII interrupt */
95#define FEC_ENET_EBERR 0x00400000U /* SDMA bus error */
96
97#define FEC_ECNTRL_PINMUX 0x00000004
98#define FEC_ECNTRL_ETHER_EN 0x00000002
99#define FEC_ECNTRL_RESET 0x00000001
100
101#define FEC_RCNTRL_BC_REJ 0x00000010
102#define FEC_RCNTRL_PROM 0x00000008
103#define FEC_RCNTRL_MII_MODE 0x00000004
104#define FEC_RCNTRL_DRT 0x00000002
105#define FEC_RCNTRL_LOOP 0x00000001
106
107#define FEC_TCNTRL_FDEN 0x00000004
108#define FEC_TCNTRL_HBC 0x00000002
109#define FEC_TCNTRL_GTS 0x00000001
110
111
112/* Make MII read/write commands for the FEC.
113*/
114#define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18))
115#define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | (VAL & 0xffff))
116#define mk_mii_end 0
117
118#define FEC_MII_LOOPS 10000
119
120/*
121 * Delay to wait for FEC reset command to complete (in us)
122 */
123#define FEC_RESET_DELAY 50
124
125static int whack_reset(fec_t * fecp)
126{
127 int i;
128
129 FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET);
130 for (i = 0; i < FEC_RESET_DELAY; i++) {
131 if ((FR(fecp, ecntrl) & FEC_ECNTRL_RESET) == 0)
132 return 0; /* OK */
133 udelay(1);
134 }
135
136 return -1;
137}
138
139static int do_pd_setup(struct fs_enet_private *fep)
140{
141 struct platform_device *pdev = to_platform_device(fep->dev);
142 struct resource *r;
143
144 /* Fill out IRQ field */
145 fep->interrupt = platform_get_irq_byname(pdev,"interrupt");
146
147 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
148 fep->fec.fecp =(void*)r->start;
149
150 if(fep->fec.fecp == NULL)
151 return -EINVAL;
152
153 return 0;
154
155}
156
157#define FEC_NAPI_RX_EVENT_MSK (FEC_ENET_RXF | FEC_ENET_RXB)
158#define FEC_RX_EVENT (FEC_ENET_RXF)
159#define FEC_TX_EVENT (FEC_ENET_TXF)
160#define FEC_ERR_EVENT_MSK (FEC_ENET_HBERR | FEC_ENET_BABR | \
161 FEC_ENET_BABT | FEC_ENET_EBERR)
162
163static int setup_data(struct net_device *dev)
164{
165 struct fs_enet_private *fep = netdev_priv(dev);
166
167 if (do_pd_setup(fep) != 0)
168 return -EINVAL;
169
170 fep->fec.hthi = 0;
171 fep->fec.htlo = 0;
172
173 fep->ev_napi_rx = FEC_NAPI_RX_EVENT_MSK;
174 fep->ev_rx = FEC_RX_EVENT;
175 fep->ev_tx = FEC_TX_EVENT;
176 fep->ev_err = FEC_ERR_EVENT_MSK;
177
178 return 0;
179}
180
181static int allocate_bd(struct net_device *dev)
182{
183 struct fs_enet_private *fep = netdev_priv(dev);
184 const struct fs_platform_info *fpi = fep->fpi;
185
186 fep->ring_base = dma_alloc_coherent(fep->dev,
187 (fpi->tx_ring + fpi->rx_ring) *
188 sizeof(cbd_t), &fep->ring_mem_addr,
189 GFP_KERNEL);
190 if (fep->ring_base == NULL)
191 return -ENOMEM;
192
193 return 0;
194}
195
196static void free_bd(struct net_device *dev)
197{
198 struct fs_enet_private *fep = netdev_priv(dev);
199 const struct fs_platform_info *fpi = fep->fpi;
200
201 if(fep->ring_base)
202 dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring)
203 * sizeof(cbd_t),
204 fep->ring_base,
205 fep->ring_mem_addr);
206}
207
208static void cleanup_data(struct net_device *dev)
209{
210 /* nothing */
211}
212
213static void set_promiscuous_mode(struct net_device *dev)
214{
215 struct fs_enet_private *fep = netdev_priv(dev);
216 fec_t *fecp = fep->fec.fecp;
217
218 FS(fecp, r_cntrl, FEC_RCNTRL_PROM);
219}
220
221static void set_multicast_start(struct net_device *dev)
222{
223 struct fs_enet_private *fep = netdev_priv(dev);
224
225 fep->fec.hthi = 0;
226 fep->fec.htlo = 0;
227}
228
229static void set_multicast_one(struct net_device *dev, const u8 *mac)
230{
231 struct fs_enet_private *fep = netdev_priv(dev);
232 int temp, hash_index, i, j;
233 u32 crc, csrVal;
234 u8 byte, msb;
235
236 crc = 0xffffffff;
237 for (i = 0; i < 6; i++) {
238 byte = mac[i];
239 for (j = 0; j < 8; j++) {
240 msb = crc >> 31;
241 crc <<= 1;
242 if (msb ^ (byte & 0x1))
243 crc ^= FEC_CRC_POLY;
244 byte >>= 1;
245 }
246 }
247
248 temp = (crc & 0x3f) >> 1;
249 hash_index = ((temp & 0x01) << 4) |
250 ((temp & 0x02) << 2) |
251 ((temp & 0x04)) |
252 ((temp & 0x08) >> 2) |
253 ((temp & 0x10) >> 4);
254 csrVal = 1 << hash_index;
255 if (crc & 1)
256 fep->fec.hthi |= csrVal;
257 else
258 fep->fec.htlo |= csrVal;
259}
260
261static void set_multicast_finish(struct net_device *dev)
262{
263 struct fs_enet_private *fep = netdev_priv(dev);
264 fec_t *fecp = fep->fec.fecp;
265
266 /* if all multi or too many multicasts; just enable all */
267 if ((dev->flags & IFF_ALLMULTI) != 0 ||
268 dev->mc_count > FEC_MAX_MULTICAST_ADDRS) {
269 fep->fec.hthi = 0xffffffffU;
270 fep->fec.htlo = 0xffffffffU;
271 }
272
273 FC(fecp, r_cntrl, FEC_RCNTRL_PROM);
274 FW(fecp, hash_table_high, fep->fec.hthi);
275 FW(fecp, hash_table_low, fep->fec.htlo);
276}
277
278static void set_multicast_list(struct net_device *dev)
279{
280 struct dev_mc_list *pmc;
281
282 if ((dev->flags & IFF_PROMISC) == 0) {
283 set_multicast_start(dev);
284 for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next)
285 set_multicast_one(dev, pmc->dmi_addr);
286 set_multicast_finish(dev);
287 } else
288 set_promiscuous_mode(dev);
289}
290
291static void restart(struct net_device *dev)
292{
293#ifdef CONFIG_DUET
294 immap_t *immap = fs_enet_immap;
295 u32 cptr;
296#endif
297 struct fs_enet_private *fep = netdev_priv(dev);
298 fec_t *fecp = fep->fec.fecp;
299 const struct fs_platform_info *fpi = fep->fpi;
300 dma_addr_t rx_bd_base_phys, tx_bd_base_phys;
301 int r;
302 u32 addrhi, addrlo;
303
304 r = whack_reset(fep->fec.fecp);
305 if (r != 0)
306 printk(KERN_ERR DRV_MODULE_NAME
307 ": %s FEC Reset FAILED!\n", dev->name);
308
309 /*
310 * Set station address.
311 */
312 addrhi = ((u32) dev->dev_addr[0] << 24) |
313 ((u32) dev->dev_addr[1] << 16) |
314 ((u32) dev->dev_addr[2] << 8) |
315 (u32) dev->dev_addr[3];
316 addrlo = ((u32) dev->dev_addr[4] << 24) |
317 ((u32) dev->dev_addr[5] << 16);
318 FW(fecp, addr_low, addrhi);
319 FW(fecp, addr_high, addrlo);
320
321 /*
322 * Reset all multicast.
323 */
324 FW(fecp, hash_table_high, fep->fec.hthi);
325 FW(fecp, hash_table_low, fep->fec.htlo);
326
327 /*
328 * Set maximum receive buffer size.
329 */
330 FW(fecp, r_buff_size, PKT_MAXBLR_SIZE);
331 FW(fecp, r_hash, PKT_MAXBUF_SIZE);
332
333 /* get physical address */
334 rx_bd_base_phys = fep->ring_mem_addr;
335 tx_bd_base_phys = rx_bd_base_phys + sizeof(cbd_t) * fpi->rx_ring;
336
337 /*
338 * Set receive and transmit descriptor base.
339 */
340 FW(fecp, r_des_start, rx_bd_base_phys);
341 FW(fecp, x_des_start, tx_bd_base_phys);
342
343 fs_init_bds(dev);
344
345 /*
346 * Enable big endian and don't care about SDMA FC.
347 */
348 FW(fecp, fun_code, 0x78000000);
349
350 /*
351 * Set MII speed.
352 */
353 FW(fecp, mii_speed, fep->mii_bus->fec.mii_speed);
354
355 /*
356 * Clear any outstanding interrupt.
357 */
358 FW(fecp, ievent, 0xffc0);
359 FW(fecp, ivec, (fep->interrupt / 2) << 29);
360
361
362 /*
363 * adjust to speed (only for DUET & RMII)
364 */
365#ifdef CONFIG_DUET
366 if (fpi->use_rmii) {
367 cptr = in_be32(&immap->im_cpm.cp_cptr);
368 switch (fs_get_fec_index(fpi->fs_no)) {
369 case 0:
370 cptr |= 0x100;
371 if (fep->speed == 10)
372 cptr |= 0x0000010;
373 else if (fep->speed == 100)
374 cptr &= ~0x0000010;
375 break;
376 case 1:
377 cptr |= 0x80;
378 if (fep->speed == 10)
379 cptr |= 0x0000008;
380 else if (fep->speed == 100)
381 cptr &= ~0x0000008;
382 break;
383 default:
384 BUG(); /* should never happen */
385 break;
386 }
387 out_be32(&immap->im_cpm.cp_cptr, cptr);
388 }
389#endif
390
391 FW(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */
392 /*
393 * adjust to duplex mode
394 */
395 if (fep->duplex) {
396 FC(fecp, r_cntrl, FEC_RCNTRL_DRT);
397 FS(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD enable */
398 } else {
399 FS(fecp, r_cntrl, FEC_RCNTRL_DRT);
400 FC(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD disable */
401 }
402
403 /*
404 * Enable interrupts we wish to service.
405 */
406 FW(fecp, imask, FEC_ENET_TXF | FEC_ENET_TXB |
407 FEC_ENET_RXF | FEC_ENET_RXB);
408
409 /*
410 * And last, enable the transmit and receive processing.
411 */
412 FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN);
413 FW(fecp, r_des_active, 0x01000000);
414}
415
416static void stop(struct net_device *dev)
417{
418 struct fs_enet_private *fep = netdev_priv(dev);
419 fec_t *fecp = fep->fec.fecp;
420 struct fs_enet_mii_bus *bus = fep->mii_bus;
421 const struct fs_mii_bus_info *bi = bus->bus_info;
422 int i;
423
424 if ((FR(fecp, ecntrl) & FEC_ECNTRL_ETHER_EN) == 0)
425 return; /* already down */
426
427 FW(fecp, x_cntrl, 0x01); /* Graceful transmit stop */
428 for (i = 0; ((FR(fecp, ievent) & 0x10000000) == 0) &&
429 i < FEC_RESET_DELAY; i++)
430 udelay(1);
431
432 if (i == FEC_RESET_DELAY)
433 printk(KERN_WARNING DRV_MODULE_NAME
434 ": %s FEC timeout on graceful transmit stop\n",
435 dev->name);
436 /*
437 * Disable FEC. Let only MII interrupts.
438 */
439 FW(fecp, imask, 0);
440 FC(fecp, ecntrl, FEC_ECNTRL_ETHER_EN);
441
442 fs_cleanup_bds(dev);
443
444 /* shut down FEC1? that's where the mii bus is */
445 if (fep->fec.idx == 0 && bus->refs > 1 && bi->method == fsmii_fec) {
446 FS(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */
447 FS(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN);
448 FW(fecp, ievent, FEC_ENET_MII);
449 FW(fecp, mii_speed, bus->fec.mii_speed);
450 }
451}
452
453static void pre_request_irq(struct net_device *dev, int irq)
454{
455 immap_t *immap = fs_enet_immap;
456 u32 siel;
457
458 /* SIU interrupt */
459 if (irq >= SIU_IRQ0 && irq < SIU_LEVEL7) {
460
461 siel = in_be32(&immap->im_siu_conf.sc_siel);
462 if ((irq & 1) == 0)
463 siel |= (0x80000000 >> irq);
464 else
465 siel &= ~(0x80000000 >> (irq & ~1));
466 out_be32(&immap->im_siu_conf.sc_siel, siel);
467 }
468}
469
470static void post_free_irq(struct net_device *dev, int irq)
471{
472 /* nothing */
473}
474
475static void napi_clear_rx_event(struct net_device *dev)
476{
477 struct fs_enet_private *fep = netdev_priv(dev);
478 fec_t *fecp = fep->fec.fecp;
479
480 FW(fecp, ievent, FEC_NAPI_RX_EVENT_MSK);
481}
482
483static void napi_enable_rx(struct net_device *dev)
484{
485 struct fs_enet_private *fep = netdev_priv(dev);
486 fec_t *fecp = fep->fec.fecp;
487
488 FS(fecp, imask, FEC_NAPI_RX_EVENT_MSK);
489}
490
491static void napi_disable_rx(struct net_device *dev)
492{
493 struct fs_enet_private *fep = netdev_priv(dev);
494 fec_t *fecp = fep->fec.fecp;
495
496 FC(fecp, imask, FEC_NAPI_RX_EVENT_MSK);
497}
498
499static void rx_bd_done(struct net_device *dev)
500{
501 struct fs_enet_private *fep = netdev_priv(dev);
502 fec_t *fecp = fep->fec.fecp;
503
504 FW(fecp, r_des_active, 0x01000000);
505}
506
507static void tx_kickstart(struct net_device *dev)
508{
509 struct fs_enet_private *fep = netdev_priv(dev);
510 fec_t *fecp = fep->fec.fecp;
511
512 FW(fecp, x_des_active, 0x01000000);
513}
514
515static u32 get_int_events(struct net_device *dev)
516{
517 struct fs_enet_private *fep = netdev_priv(dev);
518 fec_t *fecp = fep->fec.fecp;
519
520 return FR(fecp, ievent) & FR(fecp, imask);
521}
522
523static void clear_int_events(struct net_device *dev, u32 int_events)
524{
525 struct fs_enet_private *fep = netdev_priv(dev);
526 fec_t *fecp = fep->fec.fecp;
527
528 FW(fecp, ievent, int_events);
529}
530
531static void ev_error(struct net_device *dev, u32 int_events)
532{
533 printk(KERN_WARNING DRV_MODULE_NAME
534 ": %s FEC ERROR(s) 0x%x\n", dev->name, int_events);
535}
536
537int get_regs(struct net_device *dev, void *p, int *sizep)
538{
539 struct fs_enet_private *fep = netdev_priv(dev);
540
541 if (*sizep < sizeof(fec_t))
542 return -EINVAL;
543
544 memcpy_fromio(p, fep->fec.fecp, sizeof(fec_t));
545
546 return 0;
547}
548
549int get_regs_len(struct net_device *dev)
550{
551 return sizeof(fec_t);
552}
553
554void tx_restart(struct net_device *dev)
555{
556 /* nothing */
557}
558
559/*************************************************************************/
560
561const struct fs_ops fs_fec_ops = {
562 .setup_data = setup_data,
563 .cleanup_data = cleanup_data,
564 .set_multicast_list = set_multicast_list,
565 .restart = restart,
566 .stop = stop,
567 .pre_request_irq = pre_request_irq,
568 .post_free_irq = post_free_irq,
569 .napi_clear_rx_event = napi_clear_rx_event,
570 .napi_enable_rx = napi_enable_rx,
571 .napi_disable_rx = napi_disable_rx,
572 .rx_bd_done = rx_bd_done,
573 .tx_kickstart = tx_kickstart,
574 .get_int_events = get_int_events,
575 .clear_int_events = clear_int_events,
576 .ev_error = ev_error,
577 .get_regs = get_regs,
578 .get_regs_len = get_regs_len,
579 .tx_restart = tx_restart,
580 .allocate_bd = allocate_bd,
581 .free_bd = free_bd,
582};
583
584/***********************************************************************/
585
586static int mii_read(struct fs_enet_mii_bus *bus, int phy_id, int location)
587{
588 fec_t *fecp = bus->fec.fecp;
589 int i, ret = -1;
590
591 if ((FR(fecp, r_cntrl) & FEC_RCNTRL_MII_MODE) == 0)
592 BUG();
593
594 /* Add PHY address to register command. */
595 FW(fecp, mii_data, (phy_id << 23) | mk_mii_read(location));
596
597 for (i = 0; i < FEC_MII_LOOPS; i++)
598 if ((FR(fecp, ievent) & FEC_ENET_MII) != 0)
599 break;
600
601 if (i < FEC_MII_LOOPS) {
602 FW(fecp, ievent, FEC_ENET_MII);
603 ret = FR(fecp, mii_data) & 0xffff;
604 }
605
606 return ret;
607}
608
609static void mii_write(struct fs_enet_mii_bus *bus, int phy_id, int location, int value)
610{
611 fec_t *fecp = bus->fec.fecp;
612 int i;
613
614 /* this must never happen */
615 if ((FR(fecp, r_cntrl) & FEC_RCNTRL_MII_MODE) == 0)
616 BUG();
617
618 /* Add PHY address to register command. */
619 FW(fecp, mii_data, (phy_id << 23) | mk_mii_write(location, value));
620
621 for (i = 0; i < FEC_MII_LOOPS; i++)
622 if ((FR(fecp, ievent) & FEC_ENET_MII) != 0)
623 break;
624
625 if (i < FEC_MII_LOOPS)
626 FW(fecp, ievent, FEC_ENET_MII);
627}
628
629int fs_mii_fec_init(struct fs_enet_mii_bus *bus)
630{
631 bd_t *bd = (bd_t *)__res;
632 const struct fs_mii_bus_info *bi = bus->bus_info;
633 fec_t *fecp;
634
635 if (bi->id != 0)
636 return -1;
637
638 bus->fec.fecp = &((immap_t *)fs_enet_immap)->im_cpm.cp_fec;
639 bus->fec.mii_speed = ((((bd->bi_intfreq + 4999999) / 2500000) / 2)
640 & 0x3F) << 1;
641
642 fecp = bus->fec.fecp;
643
644 FS(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */
645 FS(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN);
646 FW(fecp, ievent, FEC_ENET_MII);
647 FW(fecp, mii_speed, bus->fec.mii_speed);
648
649 bus->mii_read = mii_read;
650 bus->mii_write = mii_write;
651
652 return 0;
653}
diff --git a/drivers/net/fs_enet/mac-scc.c b/drivers/net/fs_enet/mac-scc.c
new file mode 100644
index 000000000000..d8c6e9cadcf5
--- /dev/null
+++ b/drivers/net/fs_enet/mac-scc.c
@@ -0,0 +1,524 @@
1/*
2 * Ethernet on Serial Communications Controller (SCC) driver for Motorola MPC8xx and MPC82xx.
3 *
4 * Copyright (c) 2003 Intracom S.A.
5 * by Pantelis Antoniou <panto@intracom.gr>
6 *
7 * 2005 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
9 *
10 * This file is licensed under the terms of the GNU General Public License
11 * version 2. This program is licensed "as is" without any warranty of any
12 * kind, whether express or implied.
13 */
14
15#include <linux/config.h>
16#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/types.h>
19#include <linux/sched.h>
20#include <linux/string.h>
21#include <linux/ptrace.h>
22#include <linux/errno.h>
23#include <linux/ioport.h>
24#include <linux/slab.h>
25#include <linux/interrupt.h>
26#include <linux/pci.h>
27#include <linux/init.h>
28#include <linux/delay.h>
29#include <linux/netdevice.h>
30#include <linux/etherdevice.h>
31#include <linux/skbuff.h>
32#include <linux/spinlock.h>
33#include <linux/mii.h>
34#include <linux/ethtool.h>
35#include <linux/bitops.h>
36#include <linux/fs.h>
37
38#include <asm/irq.h>
39#include <asm/uaccess.h>
40
41#ifdef CONFIG_8xx
42#include <asm/8xx_immap.h>
43#include <asm/pgtable.h>
44#include <asm/mpc8xx.h>
45#include <asm/commproc.h>
46#endif
47
48#include "fs_enet.h"
49
50/*************************************************/
51
52#if defined(CONFIG_CPM1)
53/* for a 8xx __raw_xxx's are sufficient */
54#define __fs_out32(addr, x) __raw_writel(x, addr)
55#define __fs_out16(addr, x) __raw_writew(x, addr)
56#define __fs_out8(addr, x) __raw_writeb(x, addr)
57#define __fs_in32(addr) __raw_readl(addr)
58#define __fs_in16(addr) __raw_readw(addr)
59#define __fs_in8(addr) __raw_readb(addr)
60#else
61/* for others play it safe */
62#define __fs_out32(addr, x) out_be32(addr, x)
63#define __fs_out16(addr, x) out_be16(addr, x)
64#define __fs_in32(addr) in_be32(addr)
65#define __fs_in16(addr) in_be16(addr)
66#endif
67
68/* write, read, set bits, clear bits */
69#define W32(_p, _m, _v) __fs_out32(&(_p)->_m, (_v))
70#define R32(_p, _m) __fs_in32(&(_p)->_m)
71#define S32(_p, _m, _v) W32(_p, _m, R32(_p, _m) | (_v))
72#define C32(_p, _m, _v) W32(_p, _m, R32(_p, _m) & ~(_v))
73
74#define W16(_p, _m, _v) __fs_out16(&(_p)->_m, (_v))
75#define R16(_p, _m) __fs_in16(&(_p)->_m)
76#define S16(_p, _m, _v) W16(_p, _m, R16(_p, _m) | (_v))
77#define C16(_p, _m, _v) W16(_p, _m, R16(_p, _m) & ~(_v))
78
79#define W8(_p, _m, _v) __fs_out8(&(_p)->_m, (_v))
80#define R8(_p, _m) __fs_in8(&(_p)->_m)
81#define S8(_p, _m, _v) W8(_p, _m, R8(_p, _m) | (_v))
82#define C8(_p, _m, _v) W8(_p, _m, R8(_p, _m) & ~(_v))
83
84#define SCC_MAX_MULTICAST_ADDRS 64
85
86/*
87 * Delay to wait for SCC reset command to complete (in us)
88 */
89#define SCC_RESET_DELAY 50
90#define MAX_CR_CMD_LOOPS 10000
91
92static inline int scc_cr_cmd(struct fs_enet_private *fep, u32 op)
93{
94 cpm8xx_t *cpmp = &((immap_t *)fs_enet_immap)->im_cpm;
95 u32 v, ch;
96 int i = 0;
97
98 ch = fep->scc.idx << 2;
99 v = mk_cr_cmd(ch, op);
100 W16(cpmp, cp_cpcr, v | CPM_CR_FLG);
101 for (i = 0; i < MAX_CR_CMD_LOOPS; i++)
102 if ((R16(cpmp, cp_cpcr) & CPM_CR_FLG) == 0)
103 break;
104
105 if (i >= MAX_CR_CMD_LOOPS) {
106 printk(KERN_ERR "%s(): Not able to issue CPM command\n",
107 __FUNCTION__);
108 return 1;
109 }
110 return 0;
111}
112
113static int do_pd_setup(struct fs_enet_private *fep)
114{
115 struct platform_device *pdev = to_platform_device(fep->dev);
116 struct resource *r;
117
118 /* Fill out IRQ field */
119 fep->interrupt = platform_get_irq_byname(pdev, "interrupt");
120
121 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
122 fep->scc.sccp = (void *)r->start;
123
124 if (fep->scc.sccp == NULL)
125 return -EINVAL;
126
127 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pram");
128 fep->scc.ep = (void *)r->start;
129
130 if (fep->scc.ep == NULL)
131 return -EINVAL;
132
133 return 0;
134}
135
136#define SCC_NAPI_RX_EVENT_MSK (SCCE_ENET_RXF | SCCE_ENET_RXB)
137#define SCC_RX_EVENT (SCCE_ENET_RXF)
138#define SCC_TX_EVENT (SCCE_ENET_TXB)
139#define SCC_ERR_EVENT_MSK (SCCE_ENET_TXE | SCCE_ENET_BSY)
140
141static int setup_data(struct net_device *dev)
142{
143 struct fs_enet_private *fep = netdev_priv(dev);
144 const struct fs_platform_info *fpi = fep->fpi;
145
146 fep->scc.idx = fs_get_scc_index(fpi->fs_no);
147 if ((unsigned int)fep->fcc.idx > 4) /* max 4 SCCs */
148 return -EINVAL;
149
150 do_pd_setup(fep);
151
152 fep->scc.hthi = 0;
153 fep->scc.htlo = 0;
154
155 fep->ev_napi_rx = SCC_NAPI_RX_EVENT_MSK;
156 fep->ev_rx = SCC_RX_EVENT;
157 fep->ev_tx = SCC_TX_EVENT;
158 fep->ev_err = SCC_ERR_EVENT_MSK;
159
160 return 0;
161}
162
163static int allocate_bd(struct net_device *dev)
164{
165 struct fs_enet_private *fep = netdev_priv(dev);
166 const struct fs_platform_info *fpi = fep->fpi;
167
168 fep->ring_mem_addr = cpm_dpalloc((fpi->tx_ring + fpi->rx_ring) *
169 sizeof(cbd_t), 8);
170 if (IS_DPERR(fep->ring_mem_addr))
171 return -ENOMEM;
172
173 fep->ring_base = cpm_dpram_addr(fep->ring_mem_addr);
174
175 return 0;
176}
177
178static void free_bd(struct net_device *dev)
179{
180 struct fs_enet_private *fep = netdev_priv(dev);
181
182 if (fep->ring_base)
183 cpm_dpfree(fep->ring_mem_addr);
184}
185
186static void cleanup_data(struct net_device *dev)
187{
188 /* nothing */
189}
190
191static void set_promiscuous_mode(struct net_device *dev)
192{
193 struct fs_enet_private *fep = netdev_priv(dev);
194 scc_t *sccp = fep->scc.sccp;
195
196 S16(sccp, scc_psmr, SCC_PSMR_PRO);
197}
198
199static void set_multicast_start(struct net_device *dev)
200{
201 struct fs_enet_private *fep = netdev_priv(dev);
202 scc_enet_t *ep = fep->scc.ep;
203
204 W16(ep, sen_gaddr1, 0);
205 W16(ep, sen_gaddr2, 0);
206 W16(ep, sen_gaddr3, 0);
207 W16(ep, sen_gaddr4, 0);
208}
209
210static void set_multicast_one(struct net_device *dev, const u8 * mac)
211{
212 struct fs_enet_private *fep = netdev_priv(dev);
213 scc_enet_t *ep = fep->scc.ep;
214 u16 taddrh, taddrm, taddrl;
215
216 taddrh = ((u16) mac[5] << 8) | mac[4];
217 taddrm = ((u16) mac[3] << 8) | mac[2];
218 taddrl = ((u16) mac[1] << 8) | mac[0];
219
220 W16(ep, sen_taddrh, taddrh);
221 W16(ep, sen_taddrm, taddrm);
222 W16(ep, sen_taddrl, taddrl);
223 scc_cr_cmd(fep, CPM_CR_SET_GADDR);
224}
225
226static void set_multicast_finish(struct net_device *dev)
227{
228 struct fs_enet_private *fep = netdev_priv(dev);
229 scc_t *sccp = fep->scc.sccp;
230 scc_enet_t *ep = fep->scc.ep;
231
232 /* clear promiscuous always */
233 C16(sccp, scc_psmr, SCC_PSMR_PRO);
234
235 /* if all multi or too many multicasts; just enable all */
236 if ((dev->flags & IFF_ALLMULTI) != 0 ||
237 dev->mc_count > SCC_MAX_MULTICAST_ADDRS) {
238
239 W16(ep, sen_gaddr1, 0xffff);
240 W16(ep, sen_gaddr2, 0xffff);
241 W16(ep, sen_gaddr3, 0xffff);
242 W16(ep, sen_gaddr4, 0xffff);
243 }
244}
245
246static void set_multicast_list(struct net_device *dev)
247{
248 struct dev_mc_list *pmc;
249
250 if ((dev->flags & IFF_PROMISC) == 0) {
251 set_multicast_start(dev);
252 for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next)
253 set_multicast_one(dev, pmc->dmi_addr);
254 set_multicast_finish(dev);
255 } else
256 set_promiscuous_mode(dev);
257}
258
259/*
260 * This function is called to start or restart the FEC during a link
261 * change. This only happens when switching between half and full
262 * duplex.
263 */
264static void restart(struct net_device *dev)
265{
266 struct fs_enet_private *fep = netdev_priv(dev);
267 scc_t *sccp = fep->scc.sccp;
268 scc_enet_t *ep = fep->scc.ep;
269 const struct fs_platform_info *fpi = fep->fpi;
270 u16 paddrh, paddrm, paddrl;
271 const unsigned char *mac;
272 int i;
273
274 C32(sccp, scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT);
275
276 /* clear everything (slow & steady does it) */
277 for (i = 0; i < sizeof(*ep); i++)
278 __fs_out8((char *)ep + i, 0);
279
280 /* point to bds */
281 W16(ep, sen_genscc.scc_rbase, fep->ring_mem_addr);
282 W16(ep, sen_genscc.scc_tbase,
283 fep->ring_mem_addr + sizeof(cbd_t) * fpi->rx_ring);
284
285 /* Initialize function code registers for big-endian.
286 */
287 W8(ep, sen_genscc.scc_rfcr, SCC_EB);
288 W8(ep, sen_genscc.scc_tfcr, SCC_EB);
289
290 /* Set maximum bytes per receive buffer.
291 * This appears to be an Ethernet frame size, not the buffer
292 * fragment size. It must be a multiple of four.
293 */
294 W16(ep, sen_genscc.scc_mrblr, 0x5f0);
295
296 /* Set CRC preset and mask.
297 */
298 W32(ep, sen_cpres, 0xffffffff);
299 W32(ep, sen_cmask, 0xdebb20e3);
300
301 W32(ep, sen_crcec, 0); /* CRC Error counter */
302 W32(ep, sen_alec, 0); /* alignment error counter */
303 W32(ep, sen_disfc, 0); /* discard frame counter */
304
305 W16(ep, sen_pads, 0x8888); /* Tx short frame pad character */
306 W16(ep, sen_retlim, 15); /* Retry limit threshold */
307
308 W16(ep, sen_maxflr, 0x5ee); /* maximum frame length register */
309
310 W16(ep, sen_minflr, PKT_MINBUF_SIZE); /* minimum frame length register */
311
312 W16(ep, sen_maxd1, 0x000005f0); /* maximum DMA1 length */
313 W16(ep, sen_maxd2, 0x000005f0); /* maximum DMA2 length */
314
315 /* Clear hash tables.
316 */
317 W16(ep, sen_gaddr1, 0);
318 W16(ep, sen_gaddr2, 0);
319 W16(ep, sen_gaddr3, 0);
320 W16(ep, sen_gaddr4, 0);
321 W16(ep, sen_iaddr1, 0);
322 W16(ep, sen_iaddr2, 0);
323 W16(ep, sen_iaddr3, 0);
324 W16(ep, sen_iaddr4, 0);
325
326 /* set address
327 */
328 mac = dev->dev_addr;
329 paddrh = ((u16) mac[5] << 8) | mac[4];
330 paddrm = ((u16) mac[3] << 8) | mac[2];
331 paddrl = ((u16) mac[1] << 8) | mac[0];
332
333 W16(ep, sen_paddrh, paddrh);
334 W16(ep, sen_paddrm, paddrm);
335 W16(ep, sen_paddrl, paddrl);
336
337 W16(ep, sen_pper, 0);
338 W16(ep, sen_taddrl, 0);
339 W16(ep, sen_taddrm, 0);
340 W16(ep, sen_taddrh, 0);
341
342 fs_init_bds(dev);
343
344 scc_cr_cmd(fep, CPM_CR_INIT_TRX);
345
346 W16(sccp, scc_scce, 0xffff);
347
348 /* Enable interrupts we wish to service.
349 */
350 W16(sccp, scc_sccm, SCCE_ENET_TXE | SCCE_ENET_RXF | SCCE_ENET_TXB);
351
352 /* Set GSMR_H to enable all normal operating modes.
353 * Set GSMR_L to enable Ethernet to MC68160.
354 */
355 W32(sccp, scc_gsmrh, 0);
356 W32(sccp, scc_gsmrl,
357 SCC_GSMRL_TCI | SCC_GSMRL_TPL_48 | SCC_GSMRL_TPP_10 |
358 SCC_GSMRL_MODE_ENET);
359
360 /* Set sync/delimiters.
361 */
362 W16(sccp, scc_dsr, 0xd555);
363
364 /* Set processing mode. Use Ethernet CRC, catch broadcast, and
365 * start frame search 22 bit times after RENA.
366 */
367 W16(sccp, scc_psmr, SCC_PSMR_ENCRC | SCC_PSMR_NIB22);
368
369 /* Set full duplex mode if needed */
370 if (fep->duplex)
371 S16(sccp, scc_psmr, SCC_PSMR_LPB | SCC_PSMR_FDE);
372
373 S32(sccp, scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT);
374}
375
376static void stop(struct net_device *dev)
377{
378 struct fs_enet_private *fep = netdev_priv(dev);
379 scc_t *sccp = fep->scc.sccp;
380 int i;
381
382 for (i = 0; (R16(sccp, scc_sccm) == 0) && i < SCC_RESET_DELAY; i++)
383 udelay(1);
384
385 if (i == SCC_RESET_DELAY)
386 printk(KERN_WARNING DRV_MODULE_NAME
387 ": %s SCC timeout on graceful transmit stop\n",
388 dev->name);
389
390 W16(sccp, scc_sccm, 0);
391 C32(sccp, scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT);
392
393 fs_cleanup_bds(dev);
394}
395
396static void pre_request_irq(struct net_device *dev, int irq)
397{
398 immap_t *immap = fs_enet_immap;
399 u32 siel;
400
401 /* SIU interrupt */
402 if (irq >= SIU_IRQ0 && irq < SIU_LEVEL7) {
403
404 siel = in_be32(&immap->im_siu_conf.sc_siel);
405 if ((irq & 1) == 0)
406 siel |= (0x80000000 >> irq);
407 else
408 siel &= ~(0x80000000 >> (irq & ~1));
409 out_be32(&immap->im_siu_conf.sc_siel, siel);
410 }
411}
412
413static void post_free_irq(struct net_device *dev, int irq)
414{
415 /* nothing */
416}
417
418static void napi_clear_rx_event(struct net_device *dev)
419{
420 struct fs_enet_private *fep = netdev_priv(dev);
421 scc_t *sccp = fep->scc.sccp;
422
423 W16(sccp, scc_scce, SCC_NAPI_RX_EVENT_MSK);
424}
425
426static void napi_enable_rx(struct net_device *dev)
427{
428 struct fs_enet_private *fep = netdev_priv(dev);
429 scc_t *sccp = fep->scc.sccp;
430
431 S16(sccp, scc_sccm, SCC_NAPI_RX_EVENT_MSK);
432}
433
434static void napi_disable_rx(struct net_device *dev)
435{
436 struct fs_enet_private *fep = netdev_priv(dev);
437 scc_t *sccp = fep->scc.sccp;
438
439 C16(sccp, scc_sccm, SCC_NAPI_RX_EVENT_MSK);
440}
441
442static void rx_bd_done(struct net_device *dev)
443{
444 /* nothing */
445}
446
447static void tx_kickstart(struct net_device *dev)
448{
449 /* nothing */
450}
451
452static u32 get_int_events(struct net_device *dev)
453{
454 struct fs_enet_private *fep = netdev_priv(dev);
455 scc_t *sccp = fep->scc.sccp;
456
457 return (u32) R16(sccp, scc_scce);
458}
459
460static void clear_int_events(struct net_device *dev, u32 int_events)
461{
462 struct fs_enet_private *fep = netdev_priv(dev);
463 scc_t *sccp = fep->scc.sccp;
464
465 W16(sccp, scc_scce, int_events & 0xffff);
466}
467
468static void ev_error(struct net_device *dev, u32 int_events)
469{
470 printk(KERN_WARNING DRV_MODULE_NAME
471 ": %s SCC ERROR(s) 0x%x\n", dev->name, int_events);
472}
473
474static int get_regs(struct net_device *dev, void *p, int *sizep)
475{
476 struct fs_enet_private *fep = netdev_priv(dev);
477
478 if (*sizep < sizeof(scc_t) + sizeof(scc_enet_t))
479 return -EINVAL;
480
481 memcpy_fromio(p, fep->scc.sccp, sizeof(scc_t));
482 p = (char *)p + sizeof(scc_t);
483
484 memcpy_fromio(p, fep->scc.ep, sizeof(scc_enet_t));
485
486 return 0;
487}
488
489static int get_regs_len(struct net_device *dev)
490{
491 return sizeof(scc_t) + sizeof(scc_enet_t);
492}
493
494static void tx_restart(struct net_device *dev)
495{
496 struct fs_enet_private *fep = netdev_priv(dev);
497
498 scc_cr_cmd(fep, CPM_CR_RESTART_TX);
499}
500
501/*************************************************************************/
502
503const struct fs_ops fs_scc_ops = {
504 .setup_data = setup_data,
505 .cleanup_data = cleanup_data,
506 .set_multicast_list = set_multicast_list,
507 .restart = restart,
508 .stop = stop,
509 .pre_request_irq = pre_request_irq,
510 .post_free_irq = post_free_irq,
511 .napi_clear_rx_event = napi_clear_rx_event,
512 .napi_enable_rx = napi_enable_rx,
513 .napi_disable_rx = napi_disable_rx,
514 .rx_bd_done = rx_bd_done,
515 .tx_kickstart = tx_kickstart,
516 .get_int_events = get_int_events,
517 .clear_int_events = clear_int_events,
518 .ev_error = ev_error,
519 .get_regs = get_regs,
520 .get_regs_len = get_regs_len,
521 .tx_restart = tx_restart,
522 .allocate_bd = allocate_bd,
523 .free_bd = free_bd,
524};
diff --git a/drivers/net/fs_enet/mii-bitbang.c b/drivers/net/fs_enet/mii-bitbang.c
new file mode 100644
index 000000000000..24a5e2e23d18
--- /dev/null
+++ b/drivers/net/fs_enet/mii-bitbang.c
@@ -0,0 +1,405 @@
1/*
2 * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
3 *
4 * Copyright (c) 2003 Intracom S.A.
5 * by Pantelis Antoniou <panto@intracom.gr>
6 *
7 * 2005 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
9 *
10 * This file is licensed under the terms of the GNU General Public License
11 * version 2. This program is licensed "as is" without any warranty of any
12 * kind, whether express or implied.
13 */
14
15
16#include <linux/config.h>
17#include <linux/module.h>
18#include <linux/types.h>
19#include <linux/kernel.h>
20#include <linux/sched.h>
21#include <linux/string.h>
22#include <linux/ptrace.h>
23#include <linux/errno.h>
24#include <linux/ioport.h>
25#include <linux/slab.h>
26#include <linux/interrupt.h>
27#include <linux/pci.h>
28#include <linux/init.h>
29#include <linux/delay.h>
30#include <linux/netdevice.h>
31#include <linux/etherdevice.h>
32#include <linux/skbuff.h>
33#include <linux/spinlock.h>
34#include <linux/mii.h>
35#include <linux/ethtool.h>
36#include <linux/bitops.h>
37
38#include <asm/pgtable.h>
39#include <asm/irq.h>
40#include <asm/uaccess.h>
41
42#include "fs_enet.h"
43
44#ifdef CONFIG_8xx
45static int bitbang_prep_bit(u8 **dirp, u8 **datp, u8 *mskp, int port, int bit)
46{
47 immap_t *im = (immap_t *)fs_enet_immap;
48 void *dir, *dat, *ppar;
49 int adv;
50 u8 msk;
51
52 switch (port) {
53 case fsiop_porta:
54 dir = &im->im_ioport.iop_padir;
55 dat = &im->im_ioport.iop_padat;
56 ppar = &im->im_ioport.iop_papar;
57 break;
58
59 case fsiop_portb:
60 dir = &im->im_cpm.cp_pbdir;
61 dat = &im->im_cpm.cp_pbdat;
62 ppar = &im->im_cpm.cp_pbpar;
63 break;
64
65 case fsiop_portc:
66 dir = &im->im_ioport.iop_pcdir;
67 dat = &im->im_ioport.iop_pcdat;
68 ppar = &im->im_ioport.iop_pcpar;
69 break;
70
71 case fsiop_portd:
72 dir = &im->im_ioport.iop_pddir;
73 dat = &im->im_ioport.iop_pddat;
74 ppar = &im->im_ioport.iop_pdpar;
75 break;
76
77 case fsiop_porte:
78 dir = &im->im_cpm.cp_pedir;
79 dat = &im->im_cpm.cp_pedat;
80 ppar = &im->im_cpm.cp_pepar;
81 break;
82
83 default:
84 printk(KERN_ERR DRV_MODULE_NAME
85 "Illegal port value %d!\n", port);
86 return -EINVAL;
87 }
88
89 adv = bit >> 3;
90 dir = (char *)dir + adv;
91 dat = (char *)dat + adv;
92 ppar = (char *)ppar + adv;
93
94 msk = 1 << (7 - (bit & 7));
95 if ((in_8(ppar) & msk) != 0) {
96 printk(KERN_ERR DRV_MODULE_NAME
97 "pin %d on port %d is not general purpose!\n", bit, port);
98 return -EINVAL;
99 }
100
101 *dirp = dir;
102 *datp = dat;
103 *mskp = msk;
104
105 return 0;
106}
107#endif
108
109#ifdef CONFIG_8260
110static int bitbang_prep_bit(u8 **dirp, u8 **datp, u8 *mskp, int port, int bit)
111{
112 iop_cpm2_t *io = &((cpm2_map_t *)fs_enet_immap)->im_ioport;
113 void *dir, *dat, *ppar;
114 int adv;
115 u8 msk;
116
117 switch (port) {
118 case fsiop_porta:
119 dir = &io->iop_pdira;
120 dat = &io->iop_pdata;
121 ppar = &io->iop_ppara;
122 break;
123
124 case fsiop_portb:
125 dir = &io->iop_pdirb;
126 dat = &io->iop_pdatb;
127 ppar = &io->iop_pparb;
128 break;
129
130 case fsiop_portc:
131 dir = &io->iop_pdirc;
132 dat = &io->iop_pdatc;
133 ppar = &io->iop_pparc;
134 break;
135
136 case fsiop_portd:
137 dir = &io->iop_pdird;
138 dat = &io->iop_pdatd;
139 ppar = &io->iop_ppard;
140 break;
141
142 default:
143 printk(KERN_ERR DRV_MODULE_NAME
144 "Illegal port value %d!\n", port);
145 return -EINVAL;
146 }
147
148 adv = bit >> 3;
149 dir = (char *)dir + adv;
150 dat = (char *)dat + adv;
151 ppar = (char *)ppar + adv;
152
153 msk = 1 << (7 - (bit & 7));
154 if ((in_8(ppar) & msk) != 0) {
155 printk(KERN_ERR DRV_MODULE_NAME
156 "pin %d on port %d is not general purpose!\n", bit, port);
157 return -EINVAL;
158 }
159
160 *dirp = dir;
161 *datp = dat;
162 *mskp = msk;
163
164 return 0;
165}
166#endif
167
168static inline void bb_set(u8 *p, u8 m)
169{
170 out_8(p, in_8(p) | m);
171}
172
173static inline void bb_clr(u8 *p, u8 m)
174{
175 out_8(p, in_8(p) & ~m);
176}
177
178static inline int bb_read(u8 *p, u8 m)
179{
180 return (in_8(p) & m) != 0;
181}
182
183static inline void mdio_active(struct fs_enet_mii_bus *bus)
184{
185 bb_set(bus->bitbang.mdio_dir, bus->bitbang.mdio_msk);
186}
187
188static inline void mdio_tristate(struct fs_enet_mii_bus *bus)
189{
190 bb_clr(bus->bitbang.mdio_dir, bus->bitbang.mdio_msk);
191}
192
193static inline int mdio_read(struct fs_enet_mii_bus *bus)
194{
195 return bb_read(bus->bitbang.mdio_dat, bus->bitbang.mdio_msk);
196}
197
198static inline void mdio(struct fs_enet_mii_bus *bus, int what)
199{
200 if (what)
201 bb_set(bus->bitbang.mdio_dat, bus->bitbang.mdio_msk);
202 else
203 bb_clr(bus->bitbang.mdio_dat, bus->bitbang.mdio_msk);
204}
205
206static inline void mdc(struct fs_enet_mii_bus *bus, int what)
207{
208 if (what)
209 bb_set(bus->bitbang.mdc_dat, bus->bitbang.mdc_msk);
210 else
211 bb_clr(bus->bitbang.mdc_dat, bus->bitbang.mdc_msk);
212}
213
214static inline void mii_delay(struct fs_enet_mii_bus *bus)
215{
216 udelay(bus->bus_info->i.bitbang.delay);
217}
218
219/* Utility to send the preamble, address, and register (common to read and write). */
220static void bitbang_pre(struct fs_enet_mii_bus *bus, int read, u8 addr, u8 reg)
221{
222 int j;
223
224 /*
225 * Send a 32 bit preamble ('1's) with an extra '1' bit for good measure.
226 * The IEEE spec says this is a PHY optional requirement. The AMD
227 * 79C874 requires one after power up and one after a MII communications
228 * error. This means that we are doing more preambles than we need,
229 * but it is safer and will be much more robust.
230 */
231
232 mdio_active(bus);
233 mdio(bus, 1);
234 for (j = 0; j < 32; j++) {
235 mdc(bus, 0);
236 mii_delay(bus);
237 mdc(bus, 1);
238 mii_delay(bus);
239 }
240
241 /* send the start bit (01) and the read opcode (10) or write (10) */
242 mdc(bus, 0);
243 mdio(bus, 0);
244 mii_delay(bus);
245 mdc(bus, 1);
246 mii_delay(bus);
247 mdc(bus, 0);
248 mdio(bus, 1);
249 mii_delay(bus);
250 mdc(bus, 1);
251 mii_delay(bus);
252 mdc(bus, 0);
253 mdio(bus, read);
254 mii_delay(bus);
255 mdc(bus, 1);
256 mii_delay(bus);
257 mdc(bus, 0);
258 mdio(bus, !read);
259 mii_delay(bus);
260 mdc(bus, 1);
261 mii_delay(bus);
262
263 /* send the PHY address */
264 for (j = 0; j < 5; j++) {
265 mdc(bus, 0);
266 mdio(bus, (addr & 0x10) != 0);
267 mii_delay(bus);
268 mdc(bus, 1);
269 mii_delay(bus);
270 addr <<= 1;
271 }
272
273 /* send the register address */
274 for (j = 0; j < 5; j++) {
275 mdc(bus, 0);
276 mdio(bus, (reg & 0x10) != 0);
277 mii_delay(bus);
278 mdc(bus, 1);
279 mii_delay(bus);
280 reg <<= 1;
281 }
282}
283
284static int mii_read(struct fs_enet_mii_bus *bus, int phy_id, int location)
285{
286 u16 rdreg;
287 int ret, j;
288 u8 addr = phy_id & 0xff;
289 u8 reg = location & 0xff;
290
291 bitbang_pre(bus, 1, addr, reg);
292
293 /* tri-state our MDIO I/O pin so we can read */
294 mdc(bus, 0);
295 mdio_tristate(bus);
296 mii_delay(bus);
297 mdc(bus, 1);
298 mii_delay(bus);
299
300 /* check the turnaround bit: the PHY should be driving it to zero */
301 if (mdio_read(bus) != 0) {
302 /* PHY didn't drive TA low */
303 for (j = 0; j < 32; j++) {
304 mdc(bus, 0);
305 mii_delay(bus);
306 mdc(bus, 1);
307 mii_delay(bus);
308 }
309 ret = -1;
310 goto out;
311 }
312
313 mdc(bus, 0);
314 mii_delay(bus);
315
316 /* read 16 bits of register data, MSB first */
317 rdreg = 0;
318 for (j = 0; j < 16; j++) {
319 mdc(bus, 1);
320 mii_delay(bus);
321 rdreg <<= 1;
322 rdreg |= mdio_read(bus);
323 mdc(bus, 0);
324 mii_delay(bus);
325 }
326
327 mdc(bus, 1);
328 mii_delay(bus);
329 mdc(bus, 0);
330 mii_delay(bus);
331 mdc(bus, 1);
332 mii_delay(bus);
333
334 ret = rdreg;
335out:
336 return ret;
337}
338
339static void mii_write(struct fs_enet_mii_bus *bus, int phy_id, int location, int val)
340{
341 int j;
342 u8 addr = phy_id & 0xff;
343 u8 reg = location & 0xff;
344 u16 value = val & 0xffff;
345
346 bitbang_pre(bus, 0, addr, reg);
347
348 /* send the turnaround (10) */
349 mdc(bus, 0);
350 mdio(bus, 1);
351 mii_delay(bus);
352 mdc(bus, 1);
353 mii_delay(bus);
354 mdc(bus, 0);
355 mdio(bus, 0);
356 mii_delay(bus);
357 mdc(bus, 1);
358 mii_delay(bus);
359
360 /* write 16 bits of register data, MSB first */
361 for (j = 0; j < 16; j++) {
362 mdc(bus, 0);
363 mdio(bus, (value & 0x8000) != 0);
364 mii_delay(bus);
365 mdc(bus, 1);
366 mii_delay(bus);
367 value <<= 1;
368 }
369
370 /*
371 * Tri-state the MDIO line.
372 */
373 mdio_tristate(bus);
374 mdc(bus, 0);
375 mii_delay(bus);
376 mdc(bus, 1);
377 mii_delay(bus);
378}
379
380int fs_mii_bitbang_init(struct fs_enet_mii_bus *bus)
381{
382 const struct fs_mii_bus_info *bi = bus->bus_info;
383 int r;
384
385 r = bitbang_prep_bit(&bus->bitbang.mdio_dir,
386 &bus->bitbang.mdio_dat,
387 &bus->bitbang.mdio_msk,
388 bi->i.bitbang.mdio_port,
389 bi->i.bitbang.mdio_bit);
390 if (r != 0)
391 return r;
392
393 r = bitbang_prep_bit(&bus->bitbang.mdc_dir,
394 &bus->bitbang.mdc_dat,
395 &bus->bitbang.mdc_msk,
396 bi->i.bitbang.mdc_port,
397 bi->i.bitbang.mdc_bit);
398 if (r != 0)
399 return r;
400
401 bus->mii_read = mii_read;
402 bus->mii_write = mii_write;
403
404 return 0;
405}
diff --git a/drivers/net/fs_enet/mii-fixed.c b/drivers/net/fs_enet/mii-fixed.c
new file mode 100644
index 000000000000..b3e192d612e5
--- /dev/null
+++ b/drivers/net/fs_enet/mii-fixed.c
@@ -0,0 +1,92 @@
1/*
2 * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
3 *
4 * Copyright (c) 2003 Intracom S.A.
5 * by Pantelis Antoniou <panto@intracom.gr>
6 *
7 * 2005 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
9 *
10 * This file is licensed under the terms of the GNU General Public License
11 * version 2. This program is licensed "as is" without any warranty of any
12 * kind, whether express or implied.
13 */
14
15
16#include <linux/config.h>
17#include <linux/module.h>
18#include <linux/types.h>
19#include <linux/kernel.h>
20#include <linux/sched.h>
21#include <linux/string.h>
22#include <linux/ptrace.h>
23#include <linux/errno.h>
24#include <linux/ioport.h>
25#include <linux/slab.h>
26#include <linux/interrupt.h>
27#include <linux/pci.h>
28#include <linux/init.h>
29#include <linux/delay.h>
30#include <linux/netdevice.h>
31#include <linux/etherdevice.h>
32#include <linux/skbuff.h>
33#include <linux/spinlock.h>
34#include <linux/mii.h>
35#include <linux/ethtool.h>
36#include <linux/bitops.h>
37
38#include <asm/pgtable.h>
39#include <asm/irq.h>
40#include <asm/uaccess.h>
41
42#include "fs_enet.h"
43
44static const u16 mii_regs[7] = {
45 0x3100,
46 0x786d,
47 0x0fff,
48 0x0fff,
49 0x01e1,
50 0x45e1,
51 0x0003,
52};
53
54static int mii_read(struct fs_enet_mii_bus *bus, int phy_id, int location)
55{
56 int ret = 0;
57
58 if ((unsigned int)location >= ARRAY_SIZE(mii_regs))
59 return -1;
60
61 if (location != 5)
62 ret = mii_regs[location];
63 else
64 ret = bus->fixed.lpa;
65
66 return ret;
67}
68
69static void mii_write(struct fs_enet_mii_bus *bus, int phy_id, int location, int val)
70{
71 /* do nothing */
72}
73
74int fs_mii_fixed_init(struct fs_enet_mii_bus *bus)
75{
76 const struct fs_mii_bus_info *bi = bus->bus_info;
77
78 bus->fixed.lpa = 0x45e1; /* default 100Mb, full duplex */
79
80 /* if speed is fixed at 10Mb, remove 100Mb modes */
81 if (bi->i.fixed.speed == 10)
82 bus->fixed.lpa &= ~LPA_100;
83
84 /* if duplex is half, remove full duplex modes */
85 if (bi->i.fixed.duplex == 0)
86 bus->fixed.lpa &= ~LPA_DUPLEX;
87
88 bus->mii_read = mii_read;
89 bus->mii_write = mii_write;
90
91 return 0;
92}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-08 14:01:03 -0500