2 * Fast Ethernet Controller (FEC) driver for Motorola MPC8xx.
3 * Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
5 * This version of the driver is specific to the FADS implementation,
6 * since the board contains control registers external to the processor
7 * for the control of the LevelOne LXT970 transceiver. The MPC860T manual
8 * describes connections using the internal parallel port I/O, which
9 * is basically all of Port D.
11 * Right now, I am very wasteful with the buffers. I allocate memory
12 * pages and then divide them into 2K frame buffers. This way I know I
13 * have buffers large enough to hold one frame within one buffer descriptor.
14 * Once I get this working, I will use 64 or 128 byte CPM buffers, which
15 * will be much more memory efficient and will easily handle lots of
18 * Much better multiple PHY support by Magnus Damm.
19 * Copyright (c) 2000 Ericsson Radio Systems AB.
21 * Support for FEC controller of ColdFire processors.
22 * Copyright (c) 2001-2005 Greg Ungerer (gerg@snapgear.com)
24 * Bug fixes and cleanup by Philippe De Muyter (phdm@macqel.be)
25 * Copyright (c) 2004-2006 Macq Electronique SA.
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/string.h>
31 #include <linux/ptrace.h>
32 #include <linux/errno.h>
33 #include <linux/ioport.h>
34 #include <linux/slab.h>
35 #include <linux/interrupt.h>
36 #include <linux/pci.h>
37 #include <linux/init.h>
38 #include <linux/delay.h>
39 #include <linux/netdevice.h>
40 #include <linux/etherdevice.h>
41 #include <linux/skbuff.h>
42 #include <linux/spinlock.h>
43 #include <linux/workqueue.h>
44 #include <linux/bitops.h>
47 #include <asm/uaccess.h>
49 #include <asm/pgtable.h>
50 #include <asm/cacheflush.h>
52 #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || \
53 defined(CONFIG_M5272) || defined(CONFIG_M528x) || \
54 defined(CONFIG_M520x) || defined(CONFIG_M532x)
55 #include <asm/coldfire.h>
56 #include <asm/mcfsim.h>
59 #include <asm/8xx_immap.h>
60 #include <asm/mpc8xx.h>
64 #if defined(CONFIG_FEC2)
65 #define FEC_MAX_PORTS 2
67 #define FEC_MAX_PORTS 1
71 * Define the fixed address of the FEC hardware.
73 static unsigned int fec_hw[] = {
74 #if defined(CONFIG_M5272)
76 #elif defined(CONFIG_M527x)
79 #elif defined(CONFIG_M523x) || defined(CONFIG_M528x)
81 #elif defined(CONFIG_M520x)
83 #elif defined(CONFIG_M532x)
84 (MCF_MBAR+0xfc030000),
86 &(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec),
90 static unsigned char fec_mac_default[] = {
91 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
95 * Some hardware gets it MAC address out of local flash memory.
96 * if this is non-zero then assume it is the address to get MAC from.
98 #if defined(CONFIG_NETtel)
99 #define FEC_FLASHMAC 0xf0006006
100 #elif defined(CONFIG_GILBARCONAP) || defined(CONFIG_SCALES)
101 #define FEC_FLASHMAC 0xf0006000
102 #elif defined(CONFIG_CANCam)
103 #define FEC_FLASHMAC 0xf0020000
104 #elif defined (CONFIG_M5272C3)
105 #define FEC_FLASHMAC (0xffe04000 + 4)
106 #elif defined(CONFIG_MOD5272)
107 #define FEC_FLASHMAC 0xffc0406b
109 #define FEC_FLASHMAC 0
112 /* Forward declarations of some structures to support different PHYs
117 void (*funct)(uint mii_reg, struct net_device *dev);
124 const phy_cmd_t *config;
125 const phy_cmd_t *startup;
126 const phy_cmd_t *ack_int;
127 const phy_cmd_t *shutdown;
130 /* The number of Tx and Rx buffers. These are allocated from the page
131 * pool. The code may assume these are power of two, so it it best
132 * to keep them that size.
133 * We don't need to allocate pages for the transmitter. We just use
134 * the skbuffer directly.
136 #define FEC_ENET_RX_PAGES 8
137 #define FEC_ENET_RX_FRSIZE 2048
138 #define FEC_ENET_RX_FRPPG (PAGE_SIZE / FEC_ENET_RX_FRSIZE)
139 #define RX_RING_SIZE (FEC_ENET_RX_FRPPG * FEC_ENET_RX_PAGES)
140 #define FEC_ENET_TX_FRSIZE 2048
141 #define FEC_ENET_TX_FRPPG (PAGE_SIZE / FEC_ENET_TX_FRSIZE)
142 #define TX_RING_SIZE 16 /* Must be power of two */
143 #define TX_RING_MOD_MASK 15 /* for this to work */
145 #if (((RX_RING_SIZE + TX_RING_SIZE) * 8) > PAGE_SIZE)
146 #error "FEC: descriptor ring size constants too large"
149 /* Interrupt events/masks.
151 #define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
152 #define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */
153 #define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */
154 #define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */
155 #define FEC_ENET_TXF ((uint)0x08000000) /* Full frame transmitted */
156 #define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */
157 #define FEC_ENET_RXF ((uint)0x02000000) /* Full frame received */
158 #define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */
159 #define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */
160 #define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */
162 /* The FEC stores dest/src/type, data, and checksum for receive packets.
164 #define PKT_MAXBUF_SIZE 1518
165 #define PKT_MINBUF_SIZE 64
166 #define PKT_MAXBLR_SIZE 1520
170 * The 5270/5271/5280/5282/532x RX control register also contains maximum frame
171 * size bits. Other FEC hardware does not, so we need to take that into
172 * account when setting it.
174 #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
175 defined(CONFIG_M520x) || defined(CONFIG_M532x)
176 #define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16)
178 #define OPT_FRAME_SIZE 0
181 /* The FEC buffer descriptors track the ring buffers. The rx_bd_base and
182 * tx_bd_base always point to the base of the buffer descriptors. The
183 * cur_rx and cur_tx point to the currently available buffer.
184 * The dirty_tx tracks the current buffer that is being sent by the
185 * controller. The cur_tx and dirty_tx are equal under both completely
186 * empty and completely full conditions. The empty/ready indicator in
187 * the buffer descriptor determines the actual condition.
189 struct fec_enet_private {
190 /* Hardware registers of the FEC device */
193 struct net_device *netdev;
195 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
196 unsigned char *tx_bounce[TX_RING_SIZE];
197 struct sk_buff* tx_skbuff[TX_RING_SIZE];
201 /* CPM dual port RAM relative addresses.
203 cbd_t *rx_bd_base; /* Address of Rx and Tx buffers. */
205 cbd_t *cur_rx, *cur_tx; /* The next free ring entry */
206 cbd_t *dirty_tx; /* The ring entries to be free()ed. */
207 struct net_device_stats stats;
215 phy_info_t const *phy;
216 struct work_struct phy_task;
219 uint mii_phy_task_queued;
230 static int fec_enet_open(struct net_device *dev);
231 static int fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev);
232 static void fec_enet_mii(struct net_device *dev);
233 static irqreturn_t fec_enet_interrupt(int irq, void * dev_id);
234 static void fec_enet_tx(struct net_device *dev);
235 static void fec_enet_rx(struct net_device *dev);
236 static int fec_enet_close(struct net_device *dev);
237 static struct net_device_stats *fec_enet_get_stats(struct net_device *dev);
238 static void set_multicast_list(struct net_device *dev);
239 static void fec_restart(struct net_device *dev, int duplex);
240 static void fec_stop(struct net_device *dev);
241 static void fec_set_mac_address(struct net_device *dev);
244 /* MII processing. We keep this as simple as possible. Requests are
245 * placed on the list (if there is room). When the request is finished
246 * by the MII, an optional function may be called.
248 typedef struct mii_list {
250 void (*mii_func)(uint val, struct net_device *dev);
251 struct mii_list *mii_next;
255 static mii_list_t mii_cmds[NMII];
256 static mii_list_t *mii_free;
257 static mii_list_t *mii_head;
258 static mii_list_t *mii_tail;
260 static int mii_queue(struct net_device *dev, int request,
261 void (*func)(uint, struct net_device *));
263 /* Make MII read/write commands for the FEC.
265 #define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18))
266 #define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | \
270 /* Transmitter timeout.
272 #define TX_TIMEOUT (2*HZ)
274 /* Register definitions for the PHY.
277 #define MII_REG_CR 0 /* Control Register */
278 #define MII_REG_SR 1 /* Status Register */
279 #define MII_REG_PHYIR1 2 /* PHY Identification Register 1 */
280 #define MII_REG_PHYIR2 3 /* PHY Identification Register 2 */
281 #define MII_REG_ANAR 4 /* A-N Advertisement Register */
282 #define MII_REG_ANLPAR 5 /* A-N Link Partner Ability Register */
283 #define MII_REG_ANER 6 /* A-N Expansion Register */
284 #define MII_REG_ANNPTR 7 /* A-N Next Page Transmit Register */
285 #define MII_REG_ANLPRNPR 8 /* A-N Link Partner Received Next Page Reg. */
287 /* values for phy_status */
289 #define PHY_CONF_ANE 0x0001 /* 1 auto-negotiation enabled */
290 #define PHY_CONF_LOOP 0x0002 /* 1 loopback mode enabled */
291 #define PHY_CONF_SPMASK 0x00f0 /* mask for speed */
292 #define PHY_CONF_10HDX 0x0010 /* 10 Mbit half duplex supported */
293 #define PHY_CONF_10FDX 0x0020 /* 10 Mbit full duplex supported */
294 #define PHY_CONF_100HDX 0x0040 /* 100 Mbit half duplex supported */
295 #define PHY_CONF_100FDX 0x0080 /* 100 Mbit full duplex supported */
297 #define PHY_STAT_LINK 0x0100 /* 1 up - 0 down */
298 #define PHY_STAT_FAULT 0x0200 /* 1 remote fault */
299 #define PHY_STAT_ANC 0x0400 /* 1 auto-negotiation complete */
300 #define PHY_STAT_SPMASK 0xf000 /* mask for speed */
301 #define PHY_STAT_10HDX 0x1000 /* 10 Mbit half duplex selected */
302 #define PHY_STAT_10FDX 0x2000 /* 10 Mbit full duplex selected */
303 #define PHY_STAT_100HDX 0x4000 /* 100 Mbit half duplex selected */
304 #define PHY_STAT_100FDX 0x8000 /* 100 Mbit full duplex selected */
308 fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
310 struct fec_enet_private *fep;
311 volatile fec_t *fecp;
313 unsigned short status;
315 fep = netdev_priv(dev);
316 fecp = (volatile fec_t*)dev->base_addr;
319 /* Link is down or autonegotiation is in progress. */
323 /* Fill in a Tx ring entry */
326 status = bdp->cbd_sc;
327 #ifndef final_version
328 if (status & BD_ENET_TX_READY) {
329 /* Ooops. All transmit buffers are full. Bail out.
330 * This should not happen, since dev->tbusy should be set.
332 printk("%s: tx queue full!.\n", dev->name);
337 /* Clear all of the status flags.
339 status &= ~BD_ENET_TX_STATS;
341 /* Set buffer length and buffer pointer.
343 bdp->cbd_bufaddr = __pa(skb->data);
344 bdp->cbd_datlen = skb->len;
347 * On some FEC implementations data must be aligned on
348 * 4-byte boundaries. Use bounce buffers to copy data
349 * and get it aligned. Ugh.
351 if (bdp->cbd_bufaddr & 0x3) {
353 index = bdp - fep->tx_bd_base;
354 memcpy(fep->tx_bounce[index], (void *) bdp->cbd_bufaddr, bdp->cbd_datlen);
355 bdp->cbd_bufaddr = __pa(fep->tx_bounce[index]);
360 fep->tx_skbuff[fep->skb_cur] = skb;
362 fep->stats.tx_bytes += skb->len;
363 fep->skb_cur = (fep->skb_cur+1) & TX_RING_MOD_MASK;
365 /* Push the data cache so the CPM does not get stale memory
368 flush_dcache_range((unsigned long)skb->data,
369 (unsigned long)skb->data + skb->len);
371 spin_lock_irq(&fep->lock);
373 /* Send it on its way. Tell FEC it's ready, interrupt when done,
374 * it's the last BD of the frame, and to put the CRC on the end.
377 status |= (BD_ENET_TX_READY | BD_ENET_TX_INTR
378 | BD_ENET_TX_LAST | BD_ENET_TX_TC);
379 bdp->cbd_sc = status;
381 dev->trans_start = jiffies;
383 /* Trigger transmission start */
384 fecp->fec_x_des_active = 0;
386 /* If this was the last BD in the ring, start at the beginning again.
388 if (status & BD_ENET_TX_WRAP) {
389 bdp = fep->tx_bd_base;
394 if (bdp == fep->dirty_tx) {
396 netif_stop_queue(dev);
399 fep->cur_tx = (cbd_t *)bdp;
401 spin_unlock_irq(&fep->lock);
407 fec_timeout(struct net_device *dev)
409 struct fec_enet_private *fep = netdev_priv(dev);
411 printk("%s: transmit timed out.\n", dev->name);
412 fep->stats.tx_errors++;
413 #ifndef final_version
418 printk("Ring data dump: cur_tx %lx%s, dirty_tx %lx cur_rx: %lx\n",
419 (unsigned long)fep->cur_tx, fep->tx_full ? " (full)" : "",
420 (unsigned long)fep->dirty_tx,
421 (unsigned long)fep->cur_rx);
423 bdp = fep->tx_bd_base;
424 printk(" tx: %u buffers\n", TX_RING_SIZE);
425 for (i = 0 ; i < TX_RING_SIZE; i++) {
426 printk(" %08x: %04x %04x %08x\n",
430 (int) bdp->cbd_bufaddr);
434 bdp = fep->rx_bd_base;
435 printk(" rx: %lu buffers\n", (unsigned long) RX_RING_SIZE);
436 for (i = 0 ; i < RX_RING_SIZE; i++) {
437 printk(" %08x: %04x %04x %08x\n",
441 (int) bdp->cbd_bufaddr);
446 fec_restart(dev, fep->full_duplex);
447 netif_wake_queue(dev);
450 /* The interrupt handler.
451 * This is called from the MPC core interrupt.
454 fec_enet_interrupt(int irq, void * dev_id)
456 struct net_device *dev = dev_id;
457 volatile fec_t *fecp;
461 fecp = (volatile fec_t*)dev->base_addr;
463 /* Get the interrupt events that caused us to be here.
465 while ((int_events = fecp->fec_ievent) != 0) {
466 fecp->fec_ievent = int_events;
468 /* Handle receive event in its own function.
470 if (int_events & FEC_ENET_RXF) {
475 /* Transmit OK, or non-fatal error. Update the buffer
476 descriptors. FEC handles all errors, we just discover
477 them as part of the transmit process.
479 if (int_events & FEC_ENET_TXF) {
484 if (int_events & FEC_ENET_MII) {
490 return IRQ_RETVAL(handled);
495 fec_enet_tx(struct net_device *dev)
497 struct fec_enet_private *fep;
499 unsigned short status;
502 fep = netdev_priv(dev);
503 spin_lock(&fep->lock);
506 while (((status = bdp->cbd_sc) & BD_ENET_TX_READY) == 0) {
507 if (bdp == fep->cur_tx && fep->tx_full == 0) break;
509 skb = fep->tx_skbuff[fep->skb_dirty];
510 /* Check for errors. */
511 if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC |
512 BD_ENET_TX_RL | BD_ENET_TX_UN |
514 fep->stats.tx_errors++;
515 if (status & BD_ENET_TX_HB) /* No heartbeat */
516 fep->stats.tx_heartbeat_errors++;
517 if (status & BD_ENET_TX_LC) /* Late collision */
518 fep->stats.tx_window_errors++;
519 if (status & BD_ENET_TX_RL) /* Retrans limit */
520 fep->stats.tx_aborted_errors++;
521 if (status & BD_ENET_TX_UN) /* Underrun */
522 fep->stats.tx_fifo_errors++;
523 if (status & BD_ENET_TX_CSL) /* Carrier lost */
524 fep->stats.tx_carrier_errors++;
526 fep->stats.tx_packets++;
529 #ifndef final_version
530 if (status & BD_ENET_TX_READY)
531 printk("HEY! Enet xmit interrupt and TX_READY.\n");
533 /* Deferred means some collisions occurred during transmit,
534 * but we eventually sent the packet OK.
536 if (status & BD_ENET_TX_DEF)
537 fep->stats.collisions++;
539 /* Free the sk buffer associated with this last transmit.
541 dev_kfree_skb_any(skb);
542 fep->tx_skbuff[fep->skb_dirty] = NULL;
543 fep->skb_dirty = (fep->skb_dirty + 1) & TX_RING_MOD_MASK;
545 /* Update pointer to next buffer descriptor to be transmitted.
547 if (status & BD_ENET_TX_WRAP)
548 bdp = fep->tx_bd_base;
552 /* Since we have freed up a buffer, the ring is no longer
557 if (netif_queue_stopped(dev))
558 netif_wake_queue(dev);
561 fep->dirty_tx = (cbd_t *)bdp;
562 spin_unlock(&fep->lock);
566 /* During a receive, the cur_rx points to the current incoming buffer.
567 * When we update through the ring, if the next incoming buffer has
568 * not been given to the system, we just set the empty indicator,
569 * effectively tossing the packet.
572 fec_enet_rx(struct net_device *dev)
574 struct fec_enet_private *fep;
575 volatile fec_t *fecp;
577 unsigned short status;
586 fep = netdev_priv(dev);
587 fecp = (volatile fec_t*)dev->base_addr;
589 /* First, grab all of the stats for the incoming packet.
590 * These get messed up if we get called due to a busy condition.
594 while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) {
596 #ifndef final_version
597 /* Since we have allocated space to hold a complete frame,
598 * the last indicator should be set.
600 if ((status & BD_ENET_RX_LAST) == 0)
601 printk("FEC ENET: rcv is not +last\n");
605 goto rx_processing_done;
607 /* Check for errors. */
608 if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO |
609 BD_ENET_RX_CR | BD_ENET_RX_OV)) {
610 fep->stats.rx_errors++;
611 if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH)) {
612 /* Frame too long or too short. */
613 fep->stats.rx_length_errors++;
615 if (status & BD_ENET_RX_NO) /* Frame alignment */
616 fep->stats.rx_frame_errors++;
617 if (status & BD_ENET_RX_CR) /* CRC Error */
618 fep->stats.rx_crc_errors++;
619 if (status & BD_ENET_RX_OV) /* FIFO overrun */
620 fep->stats.rx_fifo_errors++;
623 /* Report late collisions as a frame error.
624 * On this error, the BD is closed, but we don't know what we
625 * have in the buffer. So, just drop this frame on the floor.
627 if (status & BD_ENET_RX_CL) {
628 fep->stats.rx_errors++;
629 fep->stats.rx_frame_errors++;
630 goto rx_processing_done;
633 /* Process the incoming frame.
635 fep->stats.rx_packets++;
636 pkt_len = bdp->cbd_datlen;
637 fep->stats.rx_bytes += pkt_len;
638 data = (__u8*)__va(bdp->cbd_bufaddr);
640 /* This does 16 byte alignment, exactly what we need.
641 * The packet length includes FCS, but we don't want to
642 * include that when passing upstream as it messes up
643 * bridging applications.
645 skb = dev_alloc_skb(pkt_len-4);
648 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
649 fep->stats.rx_dropped++;
651 skb_put(skb,pkt_len-4); /* Make room */
652 skb_copy_to_linear_data(skb, data, pkt_len-4);
653 skb->protocol=eth_type_trans(skb,dev);
658 /* Clear the status flags for this buffer.
660 status &= ~BD_ENET_RX_STATS;
662 /* Mark the buffer empty.
664 status |= BD_ENET_RX_EMPTY;
665 bdp->cbd_sc = status;
667 /* Update BD pointer to next entry.
669 if (status & BD_ENET_RX_WRAP)
670 bdp = fep->rx_bd_base;
675 /* Doing this here will keep the FEC running while we process
676 * incoming frames. On a heavily loaded network, we should be
677 * able to keep up at the expense of system resources.
679 fecp->fec_r_des_active = 0;
681 } /* while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) */
682 fep->cur_rx = (cbd_t *)bdp;
685 /* Doing this here will allow us to process all frames in the
686 * ring before the FEC is allowed to put more there. On a heavily
687 * loaded network, some frames may be lost. Unfortunately, this
688 * increases the interrupt overhead since we can potentially work
689 * our way back to the interrupt return only to come right back
692 fecp->fec_r_des_active = 0;
697 /* called from interrupt context */
699 fec_enet_mii(struct net_device *dev)
701 struct fec_enet_private *fep;
706 fep = netdev_priv(dev);
708 mii_reg = ep->fec_mii_data;
710 spin_lock(&fep->lock);
712 if ((mip = mii_head) == NULL) {
713 printk("MII and no head!\n");
717 if (mip->mii_func != NULL)
718 (*(mip->mii_func))(mii_reg, dev);
720 mii_head = mip->mii_next;
721 mip->mii_next = mii_free;
724 if ((mip = mii_head) != NULL)
725 ep->fec_mii_data = mip->mii_regval;
728 spin_unlock(&fep->lock);
732 mii_queue(struct net_device *dev, int regval, void (*func)(uint, struct net_device *))
734 struct fec_enet_private *fep;
739 /* Add PHY address to register command.
741 fep = netdev_priv(dev);
742 regval |= fep->phy_addr << 23;
746 spin_lock_irqsave(&fep->lock,flags);
748 if ((mip = mii_free) != NULL) {
749 mii_free = mip->mii_next;
750 mip->mii_regval = regval;
751 mip->mii_func = func;
752 mip->mii_next = NULL;
754 mii_tail->mii_next = mip;
758 mii_head = mii_tail = mip;
759 fep->hwp->fec_mii_data = regval;
766 spin_unlock_irqrestore(&fep->lock,flags);
771 static void mii_do_cmd(struct net_device *dev, const phy_cmd_t *c)
778 for(k = 0; (c+k)->mii_data != mk_mii_end; k++) {
779 mii_queue(dev, (c+k)->mii_data, (c+k)->funct);
783 static void mii_parse_sr(uint mii_reg, struct net_device *dev)
785 struct fec_enet_private *fep = netdev_priv(dev);
786 volatile uint *s = &(fep->phy_status);
789 status = *s & ~(PHY_STAT_LINK | PHY_STAT_FAULT | PHY_STAT_ANC);
791 if (mii_reg & 0x0004)
792 status |= PHY_STAT_LINK;
793 if (mii_reg & 0x0010)
794 status |= PHY_STAT_FAULT;
795 if (mii_reg & 0x0020)
796 status |= PHY_STAT_ANC;
801 static void mii_parse_cr(uint mii_reg, struct net_device *dev)
803 struct fec_enet_private *fep = netdev_priv(dev);
804 volatile uint *s = &(fep->phy_status);
807 status = *s & ~(PHY_CONF_ANE | PHY_CONF_LOOP);
809 if (mii_reg & 0x1000)
810 status |= PHY_CONF_ANE;
811 if (mii_reg & 0x4000)
812 status |= PHY_CONF_LOOP;
816 static void mii_parse_anar(uint mii_reg, struct net_device *dev)
818 struct fec_enet_private *fep = netdev_priv(dev);
819 volatile uint *s = &(fep->phy_status);
822 status = *s & ~(PHY_CONF_SPMASK);
824 if (mii_reg & 0x0020)
825 status |= PHY_CONF_10HDX;
826 if (mii_reg & 0x0040)
827 status |= PHY_CONF_10FDX;
828 if (mii_reg & 0x0080)
829 status |= PHY_CONF_100HDX;
830 if (mii_reg & 0x00100)
831 status |= PHY_CONF_100FDX;
835 /* ------------------------------------------------------------------------- */
836 /* The Level one LXT970 is used by many boards */
838 #define MII_LXT970_MIRROR 16 /* Mirror register */
839 #define MII_LXT970_IER 17 /* Interrupt Enable Register */
840 #define MII_LXT970_ISR 18 /* Interrupt Status Register */
841 #define MII_LXT970_CONFIG 19 /* Configuration Register */
842 #define MII_LXT970_CSR 20 /* Chip Status Register */
844 static void mii_parse_lxt970_csr(uint mii_reg, struct net_device *dev)
846 struct fec_enet_private *fep = netdev_priv(dev);
847 volatile uint *s = &(fep->phy_status);
850 status = *s & ~(PHY_STAT_SPMASK);
851 if (mii_reg & 0x0800) {
852 if (mii_reg & 0x1000)
853 status |= PHY_STAT_100FDX;
855 status |= PHY_STAT_100HDX;
857 if (mii_reg & 0x1000)
858 status |= PHY_STAT_10FDX;
860 status |= PHY_STAT_10HDX;
865 static phy_cmd_t const phy_cmd_lxt970_config[] = {
866 { mk_mii_read(MII_REG_CR), mii_parse_cr },
867 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
870 static phy_cmd_t const phy_cmd_lxt970_startup[] = { /* enable interrupts */
871 { mk_mii_write(MII_LXT970_IER, 0x0002), NULL },
872 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
875 static phy_cmd_t const phy_cmd_lxt970_ack_int[] = {
876 /* read SR and ISR to acknowledge */
877 { mk_mii_read(MII_REG_SR), mii_parse_sr },
878 { mk_mii_read(MII_LXT970_ISR), NULL },
880 /* find out the current status */
881 { mk_mii_read(MII_LXT970_CSR), mii_parse_lxt970_csr },
884 static phy_cmd_t const phy_cmd_lxt970_shutdown[] = { /* disable interrupts */
885 { mk_mii_write(MII_LXT970_IER, 0x0000), NULL },
888 static phy_info_t const phy_info_lxt970 = {
891 .config = phy_cmd_lxt970_config,
892 .startup = phy_cmd_lxt970_startup,
893 .ack_int = phy_cmd_lxt970_ack_int,
894 .shutdown = phy_cmd_lxt970_shutdown
897 /* ------------------------------------------------------------------------- */
898 /* The Level one LXT971 is used on some of my custom boards */
900 /* register definitions for the 971 */
902 #define MII_LXT971_PCR 16 /* Port Control Register */
903 #define MII_LXT971_SR2 17 /* Status Register 2 */
904 #define MII_LXT971_IER 18 /* Interrupt Enable Register */
905 #define MII_LXT971_ISR 19 /* Interrupt Status Register */
906 #define MII_LXT971_LCR 20 /* LED Control Register */
907 #define MII_LXT971_TCR 30 /* Transmit Control Register */
910 * I had some nice ideas of running the MDIO faster...
911 * The 971 should support 8MHz and I tried it, but things acted really
912 * weird, so 2.5 MHz ought to be enough for anyone...
915 static void mii_parse_lxt971_sr2(uint mii_reg, struct net_device *dev)
917 struct fec_enet_private *fep = netdev_priv(dev);
918 volatile uint *s = &(fep->phy_status);
921 status = *s & ~(PHY_STAT_SPMASK | PHY_STAT_LINK | PHY_STAT_ANC);
923 if (mii_reg & 0x0400) {
925 status |= PHY_STAT_LINK;
929 if (mii_reg & 0x0080)
930 status |= PHY_STAT_ANC;
931 if (mii_reg & 0x4000) {
932 if (mii_reg & 0x0200)
933 status |= PHY_STAT_100FDX;
935 status |= PHY_STAT_100HDX;
937 if (mii_reg & 0x0200)
938 status |= PHY_STAT_10FDX;
940 status |= PHY_STAT_10HDX;
942 if (mii_reg & 0x0008)
943 status |= PHY_STAT_FAULT;
948 static phy_cmd_t const phy_cmd_lxt971_config[] = {
949 /* limit to 10MBit because my prototype board
950 * doesn't work with 100. */
951 { mk_mii_read(MII_REG_CR), mii_parse_cr },
952 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
953 { mk_mii_read(MII_LXT971_SR2), mii_parse_lxt971_sr2 },
956 static phy_cmd_t const phy_cmd_lxt971_startup[] = { /* enable interrupts */
957 { mk_mii_write(MII_LXT971_IER, 0x00f2), NULL },
958 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
959 { mk_mii_write(MII_LXT971_LCR, 0xd422), NULL }, /* LED config */
960 /* Somehow does the 971 tell me that the link is down
961 * the first read after power-up.
962 * read here to get a valid value in ack_int */
963 { mk_mii_read(MII_REG_SR), mii_parse_sr },
966 static phy_cmd_t const phy_cmd_lxt971_ack_int[] = {
967 /* acknowledge the int before reading status ! */
968 { mk_mii_read(MII_LXT971_ISR), NULL },
969 /* find out the current status */
970 { mk_mii_read(MII_REG_SR), mii_parse_sr },
971 { mk_mii_read(MII_LXT971_SR2), mii_parse_lxt971_sr2 },
974 static phy_cmd_t const phy_cmd_lxt971_shutdown[] = { /* disable interrupts */
975 { mk_mii_write(MII_LXT971_IER, 0x0000), NULL },
978 static phy_info_t const phy_info_lxt971 = {
981 .config = phy_cmd_lxt971_config,
982 .startup = phy_cmd_lxt971_startup,
983 .ack_int = phy_cmd_lxt971_ack_int,
984 .shutdown = phy_cmd_lxt971_shutdown
987 /* ------------------------------------------------------------------------- */
988 /* The Quality Semiconductor QS6612 is used on the RPX CLLF */
990 /* register definitions */
992 #define MII_QS6612_MCR 17 /* Mode Control Register */
993 #define MII_QS6612_FTR 27 /* Factory Test Register */
994 #define MII_QS6612_MCO 28 /* Misc. Control Register */
995 #define MII_QS6612_ISR 29 /* Interrupt Source Register */
996 #define MII_QS6612_IMR 30 /* Interrupt Mask Register */
997 #define MII_QS6612_PCR 31 /* 100BaseTx PHY Control Reg. */
999 static void mii_parse_qs6612_pcr(uint mii_reg, struct net_device *dev)
1001 struct fec_enet_private *fep = netdev_priv(dev);
1002 volatile uint *s = &(fep->phy_status);
1005 status = *s & ~(PHY_STAT_SPMASK);
1007 switch((mii_reg >> 2) & 7) {
1008 case 1: status |= PHY_STAT_10HDX; break;
1009 case 2: status |= PHY_STAT_100HDX; break;
1010 case 5: status |= PHY_STAT_10FDX; break;
1011 case 6: status |= PHY_STAT_100FDX; break;
1017 static phy_cmd_t const phy_cmd_qs6612_config[] = {
1018 /* The PHY powers up isolated on the RPX,
1019 * so send a command to allow operation.
1021 { mk_mii_write(MII_QS6612_PCR, 0x0dc0), NULL },
1023 /* parse cr and anar to get some info */
1024 { mk_mii_read(MII_REG_CR), mii_parse_cr },
1025 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
1028 static phy_cmd_t const phy_cmd_qs6612_startup[] = { /* enable interrupts */
1029 { mk_mii_write(MII_QS6612_IMR, 0x003a), NULL },
1030 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
1033 static phy_cmd_t const phy_cmd_qs6612_ack_int[] = {
1034 /* we need to read ISR, SR and ANER to acknowledge */
1035 { mk_mii_read(MII_QS6612_ISR), NULL },
1036 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1037 { mk_mii_read(MII_REG_ANER), NULL },
1039 /* read pcr to get info */
1040 { mk_mii_read(MII_QS6612_PCR), mii_parse_qs6612_pcr },
1043 static phy_cmd_t const phy_cmd_qs6612_shutdown[] = { /* disable interrupts */
1044 { mk_mii_write(MII_QS6612_IMR, 0x0000), NULL },
1047 static phy_info_t const phy_info_qs6612 = {
1050 .config = phy_cmd_qs6612_config,
1051 .startup = phy_cmd_qs6612_startup,
1052 .ack_int = phy_cmd_qs6612_ack_int,
1053 .shutdown = phy_cmd_qs6612_shutdown
1056 /* ------------------------------------------------------------------------- */
1057 /* AMD AM79C874 phy */
1059 /* register definitions for the 874 */
1061 #define MII_AM79C874_MFR 16 /* Miscellaneous Feature Register */
1062 #define MII_AM79C874_ICSR 17 /* Interrupt/Status Register */
1063 #define MII_AM79C874_DR 18 /* Diagnostic Register */
1064 #define MII_AM79C874_PMLR 19 /* Power and Loopback Register */
1065 #define MII_AM79C874_MCR 21 /* ModeControl Register */
1066 #define MII_AM79C874_DC 23 /* Disconnect Counter */
1067 #define MII_AM79C874_REC 24 /* Recieve Error Counter */
1069 static void mii_parse_am79c874_dr(uint mii_reg, struct net_device *dev)
1071 struct fec_enet_private *fep = netdev_priv(dev);
1072 volatile uint *s = &(fep->phy_status);
1075 status = *s & ~(PHY_STAT_SPMASK | PHY_STAT_ANC);
1077 if (mii_reg & 0x0080)
1078 status |= PHY_STAT_ANC;
1079 if (mii_reg & 0x0400)
1080 status |= ((mii_reg & 0x0800) ? PHY_STAT_100FDX : PHY_STAT_100HDX);
1082 status |= ((mii_reg & 0x0800) ? PHY_STAT_10FDX : PHY_STAT_10HDX);
1087 static phy_cmd_t const phy_cmd_am79c874_config[] = {
1088 { mk_mii_read(MII_REG_CR), mii_parse_cr },
1089 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
1090 { mk_mii_read(MII_AM79C874_DR), mii_parse_am79c874_dr },
1093 static phy_cmd_t const phy_cmd_am79c874_startup[] = { /* enable interrupts */
1094 { mk_mii_write(MII_AM79C874_ICSR, 0xff00), NULL },
1095 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
1096 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1099 static phy_cmd_t const phy_cmd_am79c874_ack_int[] = {
1100 /* find out the current status */
1101 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1102 { mk_mii_read(MII_AM79C874_DR), mii_parse_am79c874_dr },
1103 /* we only need to read ISR to acknowledge */
1104 { mk_mii_read(MII_AM79C874_ICSR), NULL },
1107 static phy_cmd_t const phy_cmd_am79c874_shutdown[] = { /* disable interrupts */
1108 { mk_mii_write(MII_AM79C874_ICSR, 0x0000), NULL },
1111 static phy_info_t const phy_info_am79c874 = {
1114 .config = phy_cmd_am79c874_config,
1115 .startup = phy_cmd_am79c874_startup,
1116 .ack_int = phy_cmd_am79c874_ack_int,
1117 .shutdown = phy_cmd_am79c874_shutdown
1121 /* ------------------------------------------------------------------------- */
1122 /* Kendin KS8721BL phy */
1124 /* register definitions for the 8721 */
1126 #define MII_KS8721BL_RXERCR 21
1127 #define MII_KS8721BL_ICSR 22
1128 #define MII_KS8721BL_PHYCR 31
1130 static phy_cmd_t const phy_cmd_ks8721bl_config[] = {
1131 { mk_mii_read(MII_REG_CR), mii_parse_cr },
1132 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
1135 static phy_cmd_t const phy_cmd_ks8721bl_startup[] = { /* enable interrupts */
1136 { mk_mii_write(MII_KS8721BL_ICSR, 0xff00), NULL },
1137 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
1138 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1141 static phy_cmd_t const phy_cmd_ks8721bl_ack_int[] = {
1142 /* find out the current status */
1143 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1144 /* we only need to read ISR to acknowledge */
1145 { mk_mii_read(MII_KS8721BL_ICSR), NULL },
1148 static phy_cmd_t const phy_cmd_ks8721bl_shutdown[] = { /* disable interrupts */
1149 { mk_mii_write(MII_KS8721BL_ICSR, 0x0000), NULL },
1152 static phy_info_t const phy_info_ks8721bl = {
1155 .config = phy_cmd_ks8721bl_config,
1156 .startup = phy_cmd_ks8721bl_startup,
1157 .ack_int = phy_cmd_ks8721bl_ack_int,
1158 .shutdown = phy_cmd_ks8721bl_shutdown
1161 /* ------------------------------------------------------------------------- */
1162 /* register definitions for the DP83848 */
1164 #define MII_DP8384X_PHYSTST 16 /* PHY Status Register */
1166 static void mii_parse_dp8384x_sr2(uint mii_reg, struct net_device *dev)
1168 struct fec_enet_private *fep = dev->priv;
1169 volatile uint *s = &(fep->phy_status);
1171 *s &= ~(PHY_STAT_SPMASK | PHY_STAT_LINK | PHY_STAT_ANC);
1174 if (mii_reg & 0x0001) {
1176 *s |= PHY_STAT_LINK;
1179 /* Status of link */
1180 if (mii_reg & 0x0010) /* Autonegotioation complete */
1182 if (mii_reg & 0x0002) { /* 10MBps? */
1183 if (mii_reg & 0x0004) /* Full Duplex? */
1184 *s |= PHY_STAT_10FDX;
1186 *s |= PHY_STAT_10HDX;
1187 } else { /* 100 Mbps? */
1188 if (mii_reg & 0x0004) /* Full Duplex? */
1189 *s |= PHY_STAT_100FDX;
1191 *s |= PHY_STAT_100HDX;
1193 if (mii_reg & 0x0008)
1194 *s |= PHY_STAT_FAULT;
1197 static phy_info_t phy_info_dp83848= {
1201 (const phy_cmd_t []) { /* config */
1202 { mk_mii_read(MII_REG_CR), mii_parse_cr },
1203 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
1204 { mk_mii_read(MII_DP8384X_PHYSTST), mii_parse_dp8384x_sr2 },
1207 (const phy_cmd_t []) { /* startup - enable interrupts */
1208 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
1209 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1212 (const phy_cmd_t []) { /* ack_int - never happens, no interrupt */
1215 (const phy_cmd_t []) { /* shutdown */
1220 /* ------------------------------------------------------------------------- */
1222 static phy_info_t const * const phy_info[] = {
1232 /* ------------------------------------------------------------------------- */
1233 #if !defined(CONFIG_M532x)
1234 #ifdef CONFIG_RPXCLASSIC
1236 mii_link_interrupt(void *dev_id);
1239 mii_link_interrupt(int irq, void * dev_id);
1243 #if defined(CONFIG_M5272)
1246 * Code specific to Coldfire 5272 setup.
1248 static void __inline__ fec_request_intrs(struct net_device *dev)
1250 volatile unsigned long *icrp;
1251 static const struct idesc {
1254 irq_handler_t handler;
1256 { "fec(RX)", 86, fec_enet_interrupt },
1257 { "fec(TX)", 87, fec_enet_interrupt },
1258 { "fec(OTHER)", 88, fec_enet_interrupt },
1259 { "fec(MII)", 66, mii_link_interrupt },
1263 /* Setup interrupt handlers. */
1264 for (idp = id; idp->name; idp++) {
1265 if (request_irq(idp->irq, idp->handler, 0, idp->name, dev) != 0)
1266 printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, idp->irq);
1269 /* Unmask interrupt at ColdFire 5272 SIM */
1270 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR3);
1272 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
1276 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1278 volatile fec_t *fecp;
1281 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
1282 fecp->fec_x_cntrl = 0x00;
1285 * Set MII speed to 2.5 MHz
1286 * See 5272 manual section 11.5.8: MSCR
1288 fep->phy_speed = ((((MCF_CLK / 4) / (2500000 / 10)) + 5) / 10) * 2;
1289 fecp->fec_mii_speed = fep->phy_speed;
1291 fec_restart(dev, 0);
1294 static void __inline__ fec_get_mac(struct net_device *dev)
1296 struct fec_enet_private *fep = netdev_priv(dev);
1297 volatile fec_t *fecp;
1298 unsigned char *iap, tmpaddr[ETH_ALEN];
1304 * Get MAC address from FLASH.
1305 * If it is all 1's or 0's, use the default.
1307 iap = (unsigned char *)FEC_FLASHMAC;
1308 if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
1309 (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
1310 iap = fec_mac_default;
1311 if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
1312 (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
1313 iap = fec_mac_default;
1315 *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
1316 *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
1320 memcpy(dev->dev_addr, iap, ETH_ALEN);
1322 /* Adjust MAC if using default MAC address */
1323 if (iap == fec_mac_default)
1324 dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
1327 static void __inline__ fec_enable_phy_intr(void)
1331 static void __inline__ fec_disable_phy_intr(void)
1333 volatile unsigned long *icrp;
1334 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
1338 static void __inline__ fec_phy_ack_intr(void)
1340 volatile unsigned long *icrp;
1341 /* Acknowledge the interrupt */
1342 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
1346 static void __inline__ fec_localhw_setup(void)
1351 * Do not need to make region uncached on 5272.
1353 static void __inline__ fec_uncache(unsigned long addr)
1357 /* ------------------------------------------------------------------------- */
1359 #elif defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
1362 * Code specific to Coldfire 5230/5231/5232/5234/5235,
1363 * the 5270/5271/5274/5275 and 5280/5282 setups.
1365 static void __inline__ fec_request_intrs(struct net_device *dev)
1367 struct fec_enet_private *fep;
1369 static const struct idesc {
1375 { "fec(TXFIFO)", 25 },
1376 { "fec(TXCR)", 26 },
1381 { "fec(HBERR)", 31 },
1383 { "fec(EBERR)", 33 },
1384 { "fec(BABT)", 34 },
1385 { "fec(BABR)", 35 },
1389 fep = netdev_priv(dev);
1390 b = (fep->index) ? 128 : 64;
1392 /* Setup interrupt handlers. */
1393 for (idp = id; idp->name; idp++) {
1394 if (request_irq(b+idp->irq, fec_enet_interrupt, 0, idp->name, dev) != 0)
1395 printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, b+idp->irq);
1398 /* Unmask interrupts at ColdFire 5280/5282 interrupt controller */
1400 volatile unsigned char *icrp;
1401 volatile unsigned long *imrp;
1404 b = (fep->index) ? MCFICM_INTC1 : MCFICM_INTC0;
1405 icrp = (volatile unsigned char *) (MCF_IPSBAR + b +
1407 for (i = 23, ilip = 0x28; (i < 36); i++)
1410 imrp = (volatile unsigned long *) (MCF_IPSBAR + b +
1412 *imrp &= ~0x0000000f;
1413 imrp = (volatile unsigned long *) (MCF_IPSBAR + b +
1415 *imrp &= ~0xff800001;
1418 #if defined(CONFIG_M528x)
1419 /* Set up gpio outputs for MII lines */
1421 volatile u16 *gpio_paspar;
1422 volatile u8 *gpio_pehlpar;
1424 gpio_paspar = (volatile u16 *) (MCF_IPSBAR + 0x100056);
1425 gpio_pehlpar = (volatile u16 *) (MCF_IPSBAR + 0x100058);
1426 *gpio_paspar |= 0x0f00;
1427 *gpio_pehlpar = 0xc0;
1431 #if defined(CONFIG_M527x)
1432 /* Set up gpio outputs for MII lines */
1434 volatile u8 *gpio_par_fec;
1435 volatile u16 *gpio_par_feci2c;
1437 gpio_par_feci2c = (volatile u16 *)(MCF_IPSBAR + 0x100082);
1438 /* Set up gpio outputs for FEC0 MII lines */
1439 gpio_par_fec = (volatile u8 *)(MCF_IPSBAR + 0x100078);
1441 *gpio_par_feci2c |= 0x0f00;
1442 *gpio_par_fec |= 0xc0;
1444 #if defined(CONFIG_FEC2)
1445 /* Set up gpio outputs for FEC1 MII lines */
1446 gpio_par_fec = (volatile u8 *)(MCF_IPSBAR + 0x100079);
1448 *gpio_par_feci2c |= 0x00a0;
1449 *gpio_par_fec |= 0xc0;
1450 #endif /* CONFIG_FEC2 */
1452 #endif /* CONFIG_M527x */
1455 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1457 volatile fec_t *fecp;
1460 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
1461 fecp->fec_x_cntrl = 0x00;
1464 * Set MII speed to 2.5 MHz
1465 * See 5282 manual section 17.5.4.7: MSCR
1467 fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
1468 fecp->fec_mii_speed = fep->phy_speed;
1470 fec_restart(dev, 0);
1473 static void __inline__ fec_get_mac(struct net_device *dev)
1475 struct fec_enet_private *fep = netdev_priv(dev);
1476 volatile fec_t *fecp;
1477 unsigned char *iap, tmpaddr[ETH_ALEN];
1483 * Get MAC address from FLASH.
1484 * If it is all 1's or 0's, use the default.
1487 if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
1488 (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
1489 iap = fec_mac_default;
1490 if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
1491 (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
1492 iap = fec_mac_default;
1494 *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
1495 *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
1499 memcpy(dev->dev_addr, iap, ETH_ALEN);
1501 /* Adjust MAC if using default MAC address */
1502 if (iap == fec_mac_default)
1503 dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
1506 static void __inline__ fec_enable_phy_intr(void)
1510 static void __inline__ fec_disable_phy_intr(void)
1514 static void __inline__ fec_phy_ack_intr(void)
1518 static void __inline__ fec_localhw_setup(void)
1523 * Do not need to make region uncached on 5272.
1525 static void __inline__ fec_uncache(unsigned long addr)
1529 /* ------------------------------------------------------------------------- */
1531 #elif defined(CONFIG_M520x)
1534 * Code specific to Coldfire 520x
1536 static void __inline__ fec_request_intrs(struct net_device *dev)
1538 struct fec_enet_private *fep;
1540 static const struct idesc {
1546 { "fec(TXFIFO)", 25 },
1547 { "fec(TXCR)", 26 },
1552 { "fec(HBERR)", 31 },
1554 { "fec(EBERR)", 33 },
1555 { "fec(BABT)", 34 },
1556 { "fec(BABR)", 35 },
1560 fep = netdev_priv(dev);
1563 /* Setup interrupt handlers. */
1564 for (idp = id; idp->name; idp++) {
1565 if (request_irq(b+idp->irq,fec_enet_interrupt,0,idp->name,dev)!=0)
1566 printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, b+idp->irq);
1569 /* Unmask interrupts at ColdFire interrupt controller */
1571 volatile unsigned char *icrp;
1572 volatile unsigned long *imrp;
1574 icrp = (volatile unsigned char *) (MCF_IPSBAR + MCFICM_INTC0 +
1576 for (b = 36; (b < 49); b++)
1578 imrp = (volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 +
1580 *imrp &= ~0x0001FFF0;
1582 *(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FEC) |= 0xf0;
1583 *(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C) |= 0x0f;
1586 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1588 volatile fec_t *fecp;
1591 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
1592 fecp->fec_x_cntrl = 0x00;
1595 * Set MII speed to 2.5 MHz
1596 * See 5282 manual section 17.5.4.7: MSCR
1598 fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
1599 fecp->fec_mii_speed = fep->phy_speed;
1601 fec_restart(dev, 0);
1604 static void __inline__ fec_get_mac(struct net_device *dev)
1606 struct fec_enet_private *fep = netdev_priv(dev);
1607 volatile fec_t *fecp;
1608 unsigned char *iap, tmpaddr[ETH_ALEN];
1614 * Get MAC address from FLASH.
1615 * If it is all 1's or 0's, use the default.
1618 if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
1619 (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
1620 iap = fec_mac_default;
1621 if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
1622 (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
1623 iap = fec_mac_default;
1625 *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
1626 *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
1630 memcpy(dev->dev_addr, iap, ETH_ALEN);
1632 /* Adjust MAC if using default MAC address */
1633 if (iap == fec_mac_default)
1634 dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
1637 static void __inline__ fec_enable_phy_intr(void)
1641 static void __inline__ fec_disable_phy_intr(void)
1645 static void __inline__ fec_phy_ack_intr(void)
1649 static void __inline__ fec_localhw_setup(void)
1653 static void __inline__ fec_uncache(unsigned long addr)
1657 /* ------------------------------------------------------------------------- */
1659 #elif defined(CONFIG_M532x)
1661 * Code specific for M532x
1663 static void __inline__ fec_request_intrs(struct net_device *dev)
1665 struct fec_enet_private *fep;
1667 static const struct idesc {
1673 { "fec(TXFIFO)", 38 },
1674 { "fec(TXCR)", 39 },
1679 { "fec(HBERR)", 44 },
1681 { "fec(EBERR)", 46 },
1682 { "fec(BABT)", 47 },
1683 { "fec(BABR)", 48 },
1687 fep = netdev_priv(dev);
1688 b = (fep->index) ? 128 : 64;
1690 /* Setup interrupt handlers. */
1691 for (idp = id; idp->name; idp++) {
1692 if (request_irq(b+idp->irq,fec_enet_interrupt,0,idp->name,dev)!=0)
1693 printk("FEC: Could not allocate %s IRQ(%d)!\n",
1694 idp->name, b+idp->irq);
1697 /* Unmask interrupts */
1698 MCF_INTC0_ICR36 = 0x2;
1699 MCF_INTC0_ICR37 = 0x2;
1700 MCF_INTC0_ICR38 = 0x2;
1701 MCF_INTC0_ICR39 = 0x2;
1702 MCF_INTC0_ICR40 = 0x2;
1703 MCF_INTC0_ICR41 = 0x2;
1704 MCF_INTC0_ICR42 = 0x2;
1705 MCF_INTC0_ICR43 = 0x2;
1706 MCF_INTC0_ICR44 = 0x2;
1707 MCF_INTC0_ICR45 = 0x2;
1708 MCF_INTC0_ICR46 = 0x2;
1709 MCF_INTC0_ICR47 = 0x2;
1710 MCF_INTC0_ICR48 = 0x2;
1712 MCF_INTC0_IMRH &= ~(
1713 MCF_INTC_IMRH_INT_MASK36 |
1714 MCF_INTC_IMRH_INT_MASK37 |
1715 MCF_INTC_IMRH_INT_MASK38 |
1716 MCF_INTC_IMRH_INT_MASK39 |
1717 MCF_INTC_IMRH_INT_MASK40 |
1718 MCF_INTC_IMRH_INT_MASK41 |
1719 MCF_INTC_IMRH_INT_MASK42 |
1720 MCF_INTC_IMRH_INT_MASK43 |
1721 MCF_INTC_IMRH_INT_MASK44 |
1722 MCF_INTC_IMRH_INT_MASK45 |
1723 MCF_INTC_IMRH_INT_MASK46 |
1724 MCF_INTC_IMRH_INT_MASK47 |
1725 MCF_INTC_IMRH_INT_MASK48 );
1727 /* Set up gpio outputs for MII lines */
1728 MCF_GPIO_PAR_FECI2C |= (0 |
1729 MCF_GPIO_PAR_FECI2C_PAR_MDC_EMDC |
1730 MCF_GPIO_PAR_FECI2C_PAR_MDIO_EMDIO);
1731 MCF_GPIO_PAR_FEC = (0 |
1732 MCF_GPIO_PAR_FEC_PAR_FEC_7W_FEC |
1733 MCF_GPIO_PAR_FEC_PAR_FEC_MII_FEC);
1736 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1738 volatile fec_t *fecp;
1741 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
1742 fecp->fec_x_cntrl = 0x00;
1745 * Set MII speed to 2.5 MHz
1747 fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
1748 fecp->fec_mii_speed = fep->phy_speed;
1750 fec_restart(dev, 0);
1753 static void __inline__ fec_get_mac(struct net_device *dev)
1755 struct fec_enet_private *fep = netdev_priv(dev);
1756 volatile fec_t *fecp;
1757 unsigned char *iap, tmpaddr[ETH_ALEN];
1763 * Get MAC address from FLASH.
1764 * If it is all 1's or 0's, use the default.
1767 if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
1768 (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
1769 iap = fec_mac_default;
1770 if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
1771 (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
1772 iap = fec_mac_default;
1774 *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
1775 *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
1779 memcpy(dev->dev_addr, iap, ETH_ALEN);
1781 /* Adjust MAC if using default MAC address */
1782 if (iap == fec_mac_default)
1783 dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
1786 static void __inline__ fec_enable_phy_intr(void)
1790 static void __inline__ fec_disable_phy_intr(void)
1794 static void __inline__ fec_phy_ack_intr(void)
1798 static void __inline__ fec_localhw_setup(void)
1803 * Do not need to make region uncached on 532x.
1805 static void __inline__ fec_uncache(unsigned long addr)
1809 /* ------------------------------------------------------------------------- */
1815 * Code specific to the MPC860T setup.
1817 static void __inline__ fec_request_intrs(struct net_device *dev)
1819 volatile immap_t *immap;
1821 immap = (immap_t *)IMAP_ADDR; /* pointer to internal registers */
1823 if (request_8xxirq(FEC_INTERRUPT, fec_enet_interrupt, 0, "fec", dev) != 0)
1824 panic("Could not allocate FEC IRQ!");
1826 #ifdef CONFIG_RPXCLASSIC
1827 /* Make Port C, bit 15 an input that causes interrupts.
1829 immap->im_ioport.iop_pcpar &= ~0x0001;
1830 immap->im_ioport.iop_pcdir &= ~0x0001;
1831 immap->im_ioport.iop_pcso &= ~0x0001;
1832 immap->im_ioport.iop_pcint |= 0x0001;
1833 cpm_install_handler(CPMVEC_PIO_PC15, mii_link_interrupt, dev);
1835 /* Make LEDS reflect Link status.
1837 *((uint *) RPX_CSR_ADDR) &= ~BCSR2_FETHLEDMODE;
1840 if (request_8xxirq(SIU_IRQ2, mii_link_interrupt, 0, "mii", dev) != 0)
1841 panic("Could not allocate MII IRQ!");
1845 static void __inline__ fec_get_mac(struct net_device *dev)
1850 memcpy(dev->dev_addr, bd->bi_enetaddr, ETH_ALEN);
1852 #ifdef CONFIG_RPXCLASSIC
1853 /* The Embedded Planet boards have only one MAC address in
1854 * the EEPROM, but can have two Ethernet ports. For the
1855 * FEC port, we create another address by setting one of
1856 * the address bits above something that would have (up to
1857 * now) been allocated.
1859 dev->dev_adrd[3] |= 0x80;
1863 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1865 extern uint _get_IMMR(void);
1866 volatile immap_t *immap;
1867 volatile fec_t *fecp;
1870 immap = (immap_t *)IMAP_ADDR; /* pointer to internal registers */
1872 /* Configure all of port D for MII.
1874 immap->im_ioport.iop_pdpar = 0x1fff;
1876 /* Bits moved from Rev. D onward.
1878 if ((_get_IMMR() & 0xffff) < 0x0501)
1879 immap->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */
1881 immap->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */
1883 /* Set MII speed to 2.5 MHz
1885 fecp->fec_mii_speed = fep->phy_speed =
1886 ((bd->bi_busfreq * 1000000) / 2500000) & 0x7e;
1889 static void __inline__ fec_enable_phy_intr(void)
1891 volatile fec_t *fecp;
1895 /* Enable MII command finished interrupt
1897 fecp->fec_ivec = (FEC_INTERRUPT/2) << 29;
1900 static void __inline__ fec_disable_phy_intr(void)
1904 static void __inline__ fec_phy_ack_intr(void)
1908 static void __inline__ fec_localhw_setup(void)
1910 volatile fec_t *fecp;
1913 fecp->fec_r_hash = PKT_MAXBUF_SIZE;
1914 /* Enable big endian and don't care about SDMA FC.
1916 fecp->fec_fun_code = 0x78000000;
1919 static void __inline__ fec_uncache(unsigned long addr)
1922 pte = va_to_pte(mem_addr);
1923 pte_val(*pte) |= _PAGE_NO_CACHE;
1924 flush_tlb_page(init_mm.mmap, mem_addr);
1929 /* ------------------------------------------------------------------------- */
1931 static void mii_display_status(struct net_device *dev)
1933 struct fec_enet_private *fep = netdev_priv(dev);
1934 volatile uint *s = &(fep->phy_status);
1936 if (!fep->link && !fep->old_link) {
1937 /* Link is still down - don't print anything */
1941 printk("%s: status: ", dev->name);
1944 printk("link down");
1948 switch(*s & PHY_STAT_SPMASK) {
1949 case PHY_STAT_100FDX: printk(", 100MBit Full Duplex"); break;
1950 case PHY_STAT_100HDX: printk(", 100MBit Half Duplex"); break;
1951 case PHY_STAT_10FDX: printk(", 10MBit Full Duplex"); break;
1952 case PHY_STAT_10HDX: printk(", 10MBit Half Duplex"); break;
1954 printk(", Unknown speed/duplex");
1957 if (*s & PHY_STAT_ANC)
1958 printk(", auto-negotiation complete");
1961 if (*s & PHY_STAT_FAULT)
1962 printk(", remote fault");
1967 static void mii_display_config(struct work_struct *work)
1969 struct fec_enet_private *fep = container_of(work, struct fec_enet_private, phy_task);
1970 struct net_device *dev = fep->netdev;
1971 uint status = fep->phy_status;
1974 ** When we get here, phy_task is already removed from
1975 ** the workqueue. It is thus safe to allow to reuse it.
1977 fep->mii_phy_task_queued = 0;
1978 printk("%s: config: auto-negotiation ", dev->name);
1980 if (status & PHY_CONF_ANE)
1985 if (status & PHY_CONF_100FDX)
1987 if (status & PHY_CONF_100HDX)
1989 if (status & PHY_CONF_10FDX)
1991 if (status & PHY_CONF_10HDX)
1993 if (!(status & PHY_CONF_SPMASK))
1994 printk(", No speed/duplex selected?");
1996 if (status & PHY_CONF_LOOP)
1997 printk(", loopback enabled");
2001 fep->sequence_done = 1;
2004 static void mii_relink(struct work_struct *work)
2006 struct fec_enet_private *fep = container_of(work, struct fec_enet_private, phy_task);
2007 struct net_device *dev = fep->netdev;
2011 ** When we get here, phy_task is already removed from
2012 ** the workqueue. It is thus safe to allow to reuse it.
2014 fep->mii_phy_task_queued = 0;
2015 fep->link = (fep->phy_status & PHY_STAT_LINK) ? 1 : 0;
2016 mii_display_status(dev);
2017 fep->old_link = fep->link;
2022 & (PHY_STAT_100FDX | PHY_STAT_10FDX))
2024 fec_restart(dev, duplex);
2030 enable_irq(fep->mii_irq);
2035 /* mii_queue_relink is called in interrupt context from mii_link_interrupt */
2036 static void mii_queue_relink(uint mii_reg, struct net_device *dev)
2038 struct fec_enet_private *fep = netdev_priv(dev);
2041 ** We cannot queue phy_task twice in the workqueue. It
2042 ** would cause an endless loop in the workqueue.
2043 ** Fortunately, if the last mii_relink entry has not yet been
2044 ** executed now, it will do the job for the current interrupt,
2045 ** which is just what we want.
2047 if (fep->mii_phy_task_queued)
2050 fep->mii_phy_task_queued = 1;
2051 INIT_WORK(&fep->phy_task, mii_relink);
2052 schedule_work(&fep->phy_task);
2055 /* mii_queue_config is called in interrupt context from fec_enet_mii */
2056 static void mii_queue_config(uint mii_reg, struct net_device *dev)
2058 struct fec_enet_private *fep = netdev_priv(dev);
2060 if (fep->mii_phy_task_queued)
2063 fep->mii_phy_task_queued = 1;
2064 INIT_WORK(&fep->phy_task, mii_display_config);
2065 schedule_work(&fep->phy_task);
2068 phy_cmd_t const phy_cmd_relink[] = {
2069 { mk_mii_read(MII_REG_CR), mii_queue_relink },
2072 phy_cmd_t const phy_cmd_config[] = {
2073 { mk_mii_read(MII_REG_CR), mii_queue_config },
2077 /* Read remainder of PHY ID.
2080 mii_discover_phy3(uint mii_reg, struct net_device *dev)
2082 struct fec_enet_private *fep;
2085 fep = netdev_priv(dev);
2086 fep->phy_id |= (mii_reg & 0xffff);
2087 printk("fec: PHY @ 0x%x, ID 0x%08x", fep->phy_addr, fep->phy_id);
2089 for(i = 0; phy_info[i]; i++) {
2090 if(phy_info[i]->id == (fep->phy_id >> 4))
2095 printk(" -- %s\n", phy_info[i]->name);
2097 printk(" -- unknown PHY!\n");
2099 fep->phy = phy_info[i];
2100 fep->phy_id_done = 1;
2103 /* Scan all of the MII PHY addresses looking for someone to respond
2104 * with a valid ID. This usually happens quickly.
2107 mii_discover_phy(uint mii_reg, struct net_device *dev)
2109 struct fec_enet_private *fep;
2110 volatile fec_t *fecp;
2113 fep = netdev_priv(dev);
2116 if (fep->phy_addr < 32) {
2117 if ((phytype = (mii_reg & 0xffff)) != 0xffff && phytype != 0) {
2119 /* Got first part of ID, now get remainder.
2121 fep->phy_id = phytype << 16;
2122 mii_queue(dev, mk_mii_read(MII_REG_PHYIR2),
2127 mii_queue(dev, mk_mii_read(MII_REG_PHYIR1),
2131 printk("FEC: No PHY device found.\n");
2132 /* Disable external MII interface */
2133 fecp->fec_mii_speed = fep->phy_speed = 0;
2134 fec_disable_phy_intr();
2138 /* This interrupt occurs when the PHY detects a link change.
2140 #ifdef CONFIG_RPXCLASSIC
2142 mii_link_interrupt(void *dev_id)
2145 mii_link_interrupt(int irq, void * dev_id)
2148 struct net_device *dev = dev_id;
2149 struct fec_enet_private *fep = netdev_priv(dev);
2154 disable_irq(fep->mii_irq); /* disable now, enable later */
2157 mii_do_cmd(dev, fep->phy->ack_int);
2158 mii_do_cmd(dev, phy_cmd_relink); /* restart and display status */
2164 fec_enet_open(struct net_device *dev)
2166 struct fec_enet_private *fep = netdev_priv(dev);
2168 /* I should reset the ring buffers here, but I don't yet know
2169 * a simple way to do that.
2171 fec_set_mac_address(dev);
2173 fep->sequence_done = 0;
2177 mii_do_cmd(dev, fep->phy->ack_int);
2178 mii_do_cmd(dev, fep->phy->config);
2179 mii_do_cmd(dev, phy_cmd_config); /* display configuration */
2181 /* Poll until the PHY tells us its configuration
2183 * Request is initiated by mii_do_cmd above, but answer
2184 * comes by interrupt.
2185 * This should take about 25 usec per register at 2.5 MHz,
2186 * and we read approximately 5 registers.
2188 while(!fep->sequence_done)
2191 mii_do_cmd(dev, fep->phy->startup);
2193 /* Set the initial link state to true. A lot of hardware
2194 * based on this device does not implement a PHY interrupt,
2195 * so we are never notified of link change.
2199 fep->link = 1; /* lets just try it and see */
2200 /* no phy, go full duplex, it's most likely a hub chip */
2201 fec_restart(dev, 1);
2204 netif_start_queue(dev);
2206 return 0; /* Success */
2210 fec_enet_close(struct net_device *dev)
2212 struct fec_enet_private *fep = netdev_priv(dev);
2214 /* Don't know what to do yet.
2217 netif_stop_queue(dev);
2223 static struct net_device_stats *fec_enet_get_stats(struct net_device *dev)
2225 struct fec_enet_private *fep = netdev_priv(dev);
2230 /* Set or clear the multicast filter for this adaptor.
2231 * Skeleton taken from sunlance driver.
2232 * The CPM Ethernet implementation allows Multicast as well as individual
2233 * MAC address filtering. Some of the drivers check to make sure it is
2234 * a group multicast address, and discard those that are not. I guess I
2235 * will do the same for now, but just remove the test if you want
2236 * individual filtering as well (do the upper net layers want or support
2237 * this kind of feature?).
2240 #define HASH_BITS 6 /* #bits in hash */
2241 #define CRC32_POLY 0xEDB88320
2243 static void set_multicast_list(struct net_device *dev)
2245 struct fec_enet_private *fep;
2247 struct dev_mc_list *dmi;
2248 unsigned int i, j, bit, data, crc;
2251 fep = netdev_priv(dev);
2254 if (dev->flags&IFF_PROMISC) {
2255 ep->fec_r_cntrl |= 0x0008;
2258 ep->fec_r_cntrl &= ~0x0008;
2260 if (dev->flags & IFF_ALLMULTI) {
2261 /* Catch all multicast addresses, so set the
2262 * filter to all 1's.
2264 ep->fec_hash_table_high = 0xffffffff;
2265 ep->fec_hash_table_low = 0xffffffff;
2267 /* Clear filter and add the addresses in hash register.
2269 ep->fec_hash_table_high = 0;
2270 ep->fec_hash_table_low = 0;
2274 for (j = 0; j < dev->mc_count; j++, dmi = dmi->next)
2276 /* Only support group multicast for now.
2278 if (!(dmi->dmi_addr[0] & 1))
2281 /* calculate crc32 value of mac address
2285 for (i = 0; i < dmi->dmi_addrlen; i++)
2287 data = dmi->dmi_addr[i];
2288 for (bit = 0; bit < 8; bit++, data >>= 1)
2291 (((crc ^ data) & 1) ? CRC32_POLY : 0);
2295 /* only upper 6 bits (HASH_BITS) are used
2296 which point to specific bit in he hash registers
2298 hash = (crc >> (32 - HASH_BITS)) & 0x3f;
2301 ep->fec_hash_table_high |= 1 << (hash - 32);
2303 ep->fec_hash_table_low |= 1 << hash;
2309 /* Set a MAC change in hardware.
2312 fec_set_mac_address(struct net_device *dev)
2314 volatile fec_t *fecp;
2316 fecp = ((struct fec_enet_private *)netdev_priv(dev))->hwp;
2318 /* Set station address. */
2319 fecp->fec_addr_low = dev->dev_addr[3] | (dev->dev_addr[2] << 8) |
2320 (dev->dev_addr[1] << 16) | (dev->dev_addr[0] << 24);
2321 fecp->fec_addr_high = (dev->dev_addr[5] << 16) |
2322 (dev->dev_addr[4] << 24);
2326 /* Initialize the FEC Ethernet on 860T (or ColdFire 5272).
2329 * XXX: We need to clean up on failure exits here.
2331 int __init fec_enet_init(struct net_device *dev)
2333 struct fec_enet_private *fep = netdev_priv(dev);
2334 unsigned long mem_addr;
2335 volatile cbd_t *bdp;
2337 volatile fec_t *fecp;
2339 static int index = 0;
2341 /* Only allow us to be probed once. */
2342 if (index >= FEC_MAX_PORTS)
2345 /* Allocate memory for buffer descriptors.
2347 mem_addr = __get_free_page(GFP_KERNEL);
2348 if (mem_addr == 0) {
2349 printk("FEC: allocate descriptor memory failed?\n");
2353 /* Create an Ethernet device instance.
2355 fecp = (volatile fec_t *) fec_hw[index];
2361 /* Whack a reset. We should wait for this.
2363 fecp->fec_ecntrl = 1;
2366 /* Set the Ethernet address. If using multiple Enets on the 8xx,
2367 * this needs some work to get unique addresses.
2369 * This is our default MAC address unless the user changes
2370 * it via eth_mac_addr (our dev->set_mac_addr handler).
2374 cbd_base = (cbd_t *)mem_addr;
2375 /* XXX: missing check for allocation failure */
2377 fec_uncache(mem_addr);
2379 /* Set receive and transmit descriptor base.
2381 fep->rx_bd_base = cbd_base;
2382 fep->tx_bd_base = cbd_base + RX_RING_SIZE;
2384 fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
2385 fep->cur_rx = fep->rx_bd_base;
2387 fep->skb_cur = fep->skb_dirty = 0;
2389 /* Initialize the receive buffer descriptors.
2391 bdp = fep->rx_bd_base;
2392 for (i=0; i<FEC_ENET_RX_PAGES; i++) {
2396 mem_addr = __get_free_page(GFP_KERNEL);
2397 /* XXX: missing check for allocation failure */
2399 fec_uncache(mem_addr);
2401 /* Initialize the BD for every fragment in the page.
2403 for (j=0; j<FEC_ENET_RX_FRPPG; j++) {
2404 bdp->cbd_sc = BD_ENET_RX_EMPTY;
2405 bdp->cbd_bufaddr = __pa(mem_addr);
2406 mem_addr += FEC_ENET_RX_FRSIZE;
2411 /* Set the last buffer to wrap.
2414 bdp->cbd_sc |= BD_SC_WRAP;
2416 /* ...and the same for transmmit.
2418 bdp = fep->tx_bd_base;
2419 for (i=0, j=FEC_ENET_TX_FRPPG; i<TX_RING_SIZE; i++) {
2420 if (j >= FEC_ENET_TX_FRPPG) {
2421 mem_addr = __get_free_page(GFP_KERNEL);
2424 mem_addr += FEC_ENET_TX_FRSIZE;
2427 fep->tx_bounce[i] = (unsigned char *) mem_addr;
2429 /* Initialize the BD for every fragment in the page.
2432 bdp->cbd_bufaddr = 0;
2436 /* Set the last buffer to wrap.
2439 bdp->cbd_sc |= BD_SC_WRAP;
2441 /* Set receive and transmit descriptor base.
2443 fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base));
2444 fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base));
2446 /* Install our interrupt handlers. This varies depending on
2449 fec_request_intrs(dev);
2451 fecp->fec_hash_table_high = 0;
2452 fecp->fec_hash_table_low = 0;
2453 fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
2454 fecp->fec_ecntrl = 2;
2455 fecp->fec_r_des_active = 0;
2457 dev->base_addr = (unsigned long)fecp;
2459 /* The FEC Ethernet specific entries in the device structure. */
2460 dev->open = fec_enet_open;
2461 dev->hard_start_xmit = fec_enet_start_xmit;
2462 dev->tx_timeout = fec_timeout;
2463 dev->watchdog_timeo = TX_TIMEOUT;
2464 dev->stop = fec_enet_close;
2465 dev->get_stats = fec_enet_get_stats;
2466 dev->set_multicast_list = set_multicast_list;
2468 for (i=0; i<NMII-1; i++)
2469 mii_cmds[i].mii_next = &mii_cmds[i+1];
2470 mii_free = mii_cmds;
2472 /* setup MII interface */
2473 fec_set_mii(dev, fep);
2475 /* Clear and enable interrupts */
2476 fecp->fec_ievent = 0xffc00000;
2477 fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB |
2478 FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII);
2480 /* Queue up command to detect the PHY and initialize the
2481 * remainder of the interface.
2483 fep->phy_id_done = 0;
2485 mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), mii_discover_phy);
2491 /* This function is called to start or restart the FEC during a link
2492 * change. This only happens when switching between half and full
2496 fec_restart(struct net_device *dev, int duplex)
2498 struct fec_enet_private *fep;
2499 volatile cbd_t *bdp;
2500 volatile fec_t *fecp;
2503 fep = netdev_priv(dev);
2506 /* Whack a reset. We should wait for this.
2508 fecp->fec_ecntrl = 1;
2511 /* Clear any outstanding interrupt.
2513 fecp->fec_ievent = 0xffc00000;
2514 fec_enable_phy_intr();
2516 /* Set station address.
2518 fec_set_mac_address(dev);
2520 /* Reset all multicast.
2522 fecp->fec_hash_table_high = 0;
2523 fecp->fec_hash_table_low = 0;
2525 /* Set maximum receive buffer size.
2527 fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
2529 fec_localhw_setup();
2531 /* Set receive and transmit descriptor base.
2533 fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base));
2534 fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base));
2536 fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
2537 fep->cur_rx = fep->rx_bd_base;
2539 /* Reset SKB transmit buffers.
2541 fep->skb_cur = fep->skb_dirty = 0;
2542 for (i=0; i<=TX_RING_MOD_MASK; i++) {
2543 if (fep->tx_skbuff[i] != NULL) {
2544 dev_kfree_skb_any(fep->tx_skbuff[i]);
2545 fep->tx_skbuff[i] = NULL;
2549 /* Initialize the receive buffer descriptors.
2551 bdp = fep->rx_bd_base;
2552 for (i=0; i<RX_RING_SIZE; i++) {
2554 /* Initialize the BD for every fragment in the page.
2556 bdp->cbd_sc = BD_ENET_RX_EMPTY;
2560 /* Set the last buffer to wrap.
2563 bdp->cbd_sc |= BD_SC_WRAP;
2565 /* ...and the same for transmmit.
2567 bdp = fep->tx_bd_base;
2568 for (i=0; i<TX_RING_SIZE; i++) {
2570 /* Initialize the BD for every fragment in the page.
2573 bdp->cbd_bufaddr = 0;
2577 /* Set the last buffer to wrap.
2580 bdp->cbd_sc |= BD_SC_WRAP;
2585 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;/* MII enable */
2586 fecp->fec_x_cntrl = 0x04; /* FD enable */
2589 /* MII enable|No Rcv on Xmit */
2590 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x06;
2591 fecp->fec_x_cntrl = 0x00;
2593 fep->full_duplex = duplex;
2597 fecp->fec_mii_speed = fep->phy_speed;
2599 /* And last, enable the transmit and receive processing.
2601 fecp->fec_ecntrl = 2;
2602 fecp->fec_r_des_active = 0;
2604 /* Enable interrupts we wish to service.
2606 fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB |
2607 FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII);
2611 fec_stop(struct net_device *dev)
2613 volatile fec_t *fecp;
2614 struct fec_enet_private *fep;
2616 fep = netdev_priv(dev);
2620 ** We cannot expect a graceful transmit stop without link !!!
2624 fecp->fec_x_cntrl = 0x01; /* Graceful transmit stop */
2626 if (!(fecp->fec_ievent & FEC_ENET_GRA))
2627 printk("fec_stop : Graceful transmit stop did not complete !\n");
2630 /* Whack a reset. We should wait for this.
2632 fecp->fec_ecntrl = 1;
2635 /* Clear outstanding MII command interrupts.
2637 fecp->fec_ievent = FEC_ENET_MII;
2638 fec_enable_phy_intr();
2640 fecp->fec_imask = FEC_ENET_MII;
2641 fecp->fec_mii_speed = fep->phy_speed;
2644 static int __init fec_enet_module_init(void)
2646 struct net_device *dev;
2649 printk("FEC ENET Version 0.2\n");
2651 for (i = 0; (i < FEC_MAX_PORTS); i++) {
2652 dev = alloc_etherdev(sizeof(struct fec_enet_private));
2655 err = fec_enet_init(dev);
2660 if (register_netdev(dev) != 0) {
2661 /* XXX: missing cleanup here */
2666 printk("%s: ethernet ", dev->name);
2667 for (j = 0; (j < 5); j++)
2668 printk("%02x:", dev->dev_addr[j]);
2669 printk("%02x\n", dev->dev_addr[5]);
2674 module_init(fec_enet_module_init);
2676 MODULE_LICENSE("GPL");