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. */
214 phy_info_t const *phy;
215 struct work_struct phy_task;
218 uint mii_phy_task_queued;
229 static int fec_enet_open(struct net_device *dev);
230 static int fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev);
231 static void fec_enet_mii(struct net_device *dev);
232 static irqreturn_t fec_enet_interrupt(int irq, void * dev_id);
233 static void fec_enet_tx(struct net_device *dev);
234 static void fec_enet_rx(struct net_device *dev);
235 static int fec_enet_close(struct net_device *dev);
236 static void set_multicast_list(struct net_device *dev);
237 static void fec_restart(struct net_device *dev, int duplex);
238 static void fec_stop(struct net_device *dev);
239 static void fec_set_mac_address(struct net_device *dev);
242 /* MII processing. We keep this as simple as possible. Requests are
243 * placed on the list (if there is room). When the request is finished
244 * by the MII, an optional function may be called.
246 typedef struct mii_list {
248 void (*mii_func)(uint val, struct net_device *dev);
249 struct mii_list *mii_next;
253 static mii_list_t mii_cmds[NMII];
254 static mii_list_t *mii_free;
255 static mii_list_t *mii_head;
256 static mii_list_t *mii_tail;
258 static int mii_queue(struct net_device *dev, int request,
259 void (*func)(uint, struct net_device *));
261 /* Make MII read/write commands for the FEC.
263 #define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18))
264 #define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | \
268 /* Transmitter timeout.
270 #define TX_TIMEOUT (2*HZ)
272 /* Register definitions for the PHY.
275 #define MII_REG_CR 0 /* Control Register */
276 #define MII_REG_SR 1 /* Status Register */
277 #define MII_REG_PHYIR1 2 /* PHY Identification Register 1 */
278 #define MII_REG_PHYIR2 3 /* PHY Identification Register 2 */
279 #define MII_REG_ANAR 4 /* A-N Advertisement Register */
280 #define MII_REG_ANLPAR 5 /* A-N Link Partner Ability Register */
281 #define MII_REG_ANER 6 /* A-N Expansion Register */
282 #define MII_REG_ANNPTR 7 /* A-N Next Page Transmit Register */
283 #define MII_REG_ANLPRNPR 8 /* A-N Link Partner Received Next Page Reg. */
285 /* values for phy_status */
287 #define PHY_CONF_ANE 0x0001 /* 1 auto-negotiation enabled */
288 #define PHY_CONF_LOOP 0x0002 /* 1 loopback mode enabled */
289 #define PHY_CONF_SPMASK 0x00f0 /* mask for speed */
290 #define PHY_CONF_10HDX 0x0010 /* 10 Mbit half duplex supported */
291 #define PHY_CONF_10FDX 0x0020 /* 10 Mbit full duplex supported */
292 #define PHY_CONF_100HDX 0x0040 /* 100 Mbit half duplex supported */
293 #define PHY_CONF_100FDX 0x0080 /* 100 Mbit full duplex supported */
295 #define PHY_STAT_LINK 0x0100 /* 1 up - 0 down */
296 #define PHY_STAT_FAULT 0x0200 /* 1 remote fault */
297 #define PHY_STAT_ANC 0x0400 /* 1 auto-negotiation complete */
298 #define PHY_STAT_SPMASK 0xf000 /* mask for speed */
299 #define PHY_STAT_10HDX 0x1000 /* 10 Mbit half duplex selected */
300 #define PHY_STAT_10FDX 0x2000 /* 10 Mbit full duplex selected */
301 #define PHY_STAT_100HDX 0x4000 /* 100 Mbit half duplex selected */
302 #define PHY_STAT_100FDX 0x8000 /* 100 Mbit full duplex selected */
306 fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
308 struct fec_enet_private *fep;
309 volatile fec_t *fecp;
311 unsigned short status;
313 fep = netdev_priv(dev);
314 fecp = (volatile fec_t*)dev->base_addr;
317 /* Link is down or autonegotiation is in progress. */
321 /* Fill in a Tx ring entry */
324 status = bdp->cbd_sc;
325 #ifndef final_version
326 if (status & BD_ENET_TX_READY) {
327 /* Ooops. All transmit buffers are full. Bail out.
328 * This should not happen, since dev->tbusy should be set.
330 printk("%s: tx queue full!.\n", dev->name);
335 /* Clear all of the status flags.
337 status &= ~BD_ENET_TX_STATS;
339 /* Set buffer length and buffer pointer.
341 bdp->cbd_bufaddr = __pa(skb->data);
342 bdp->cbd_datlen = skb->len;
345 * On some FEC implementations data must be aligned on
346 * 4-byte boundaries. Use bounce buffers to copy data
347 * and get it aligned. Ugh.
349 if (bdp->cbd_bufaddr & 0x3) {
351 index = bdp - fep->tx_bd_base;
352 memcpy(fep->tx_bounce[index], (void *) bdp->cbd_bufaddr, bdp->cbd_datlen);
353 bdp->cbd_bufaddr = __pa(fep->tx_bounce[index]);
358 fep->tx_skbuff[fep->skb_cur] = skb;
360 dev->stats.tx_bytes += skb->len;
361 fep->skb_cur = (fep->skb_cur+1) & TX_RING_MOD_MASK;
363 /* Push the data cache so the CPM does not get stale memory
366 flush_dcache_range((unsigned long)skb->data,
367 (unsigned long)skb->data + skb->len);
369 spin_lock_irq(&fep->lock);
371 /* Send it on its way. Tell FEC it's ready, interrupt when done,
372 * it's the last BD of the frame, and to put the CRC on the end.
375 status |= (BD_ENET_TX_READY | BD_ENET_TX_INTR
376 | BD_ENET_TX_LAST | BD_ENET_TX_TC);
377 bdp->cbd_sc = status;
379 dev->trans_start = jiffies;
381 /* Trigger transmission start */
382 fecp->fec_x_des_active = 0;
384 /* If this was the last BD in the ring, start at the beginning again.
386 if (status & BD_ENET_TX_WRAP) {
387 bdp = fep->tx_bd_base;
392 if (bdp == fep->dirty_tx) {
394 netif_stop_queue(dev);
397 fep->cur_tx = (cbd_t *)bdp;
399 spin_unlock_irq(&fep->lock);
405 fec_timeout(struct net_device *dev)
407 struct fec_enet_private *fep = netdev_priv(dev);
409 printk("%s: transmit timed out.\n", dev->name);
410 dev->stats.tx_errors++;
411 #ifndef final_version
416 printk("Ring data dump: cur_tx %lx%s, dirty_tx %lx cur_rx: %lx\n",
417 (unsigned long)fep->cur_tx, fep->tx_full ? " (full)" : "",
418 (unsigned long)fep->dirty_tx,
419 (unsigned long)fep->cur_rx);
421 bdp = fep->tx_bd_base;
422 printk(" tx: %u buffers\n", TX_RING_SIZE);
423 for (i = 0 ; i < TX_RING_SIZE; i++) {
424 printk(" %08x: %04x %04x %08x\n",
428 (int) bdp->cbd_bufaddr);
432 bdp = fep->rx_bd_base;
433 printk(" rx: %lu buffers\n", (unsigned long) RX_RING_SIZE);
434 for (i = 0 ; i < RX_RING_SIZE; i++) {
435 printk(" %08x: %04x %04x %08x\n",
439 (int) bdp->cbd_bufaddr);
444 fec_restart(dev, fep->full_duplex);
445 netif_wake_queue(dev);
448 /* The interrupt handler.
449 * This is called from the MPC core interrupt.
452 fec_enet_interrupt(int irq, void * dev_id)
454 struct net_device *dev = dev_id;
455 volatile fec_t *fecp;
459 fecp = (volatile fec_t*)dev->base_addr;
461 /* Get the interrupt events that caused us to be here.
463 while ((int_events = fecp->fec_ievent) != 0) {
464 fecp->fec_ievent = int_events;
466 /* Handle receive event in its own function.
468 if (int_events & FEC_ENET_RXF) {
473 /* Transmit OK, or non-fatal error. Update the buffer
474 descriptors. FEC handles all errors, we just discover
475 them as part of the transmit process.
477 if (int_events & FEC_ENET_TXF) {
482 if (int_events & FEC_ENET_MII) {
488 return IRQ_RETVAL(handled);
493 fec_enet_tx(struct net_device *dev)
495 struct fec_enet_private *fep;
497 unsigned short status;
500 fep = netdev_priv(dev);
501 spin_lock(&fep->lock);
504 while (((status = bdp->cbd_sc) & BD_ENET_TX_READY) == 0) {
505 if (bdp == fep->cur_tx && fep->tx_full == 0) break;
507 skb = fep->tx_skbuff[fep->skb_dirty];
508 /* Check for errors. */
509 if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC |
510 BD_ENET_TX_RL | BD_ENET_TX_UN |
512 dev->stats.tx_errors++;
513 if (status & BD_ENET_TX_HB) /* No heartbeat */
514 dev->stats.tx_heartbeat_errors++;
515 if (status & BD_ENET_TX_LC) /* Late collision */
516 dev->stats.tx_window_errors++;
517 if (status & BD_ENET_TX_RL) /* Retrans limit */
518 dev->stats.tx_aborted_errors++;
519 if (status & BD_ENET_TX_UN) /* Underrun */
520 dev->stats.tx_fifo_errors++;
521 if (status & BD_ENET_TX_CSL) /* Carrier lost */
522 dev->stats.tx_carrier_errors++;
524 dev->stats.tx_packets++;
527 #ifndef final_version
528 if (status & BD_ENET_TX_READY)
529 printk("HEY! Enet xmit interrupt and TX_READY.\n");
531 /* Deferred means some collisions occurred during transmit,
532 * but we eventually sent the packet OK.
534 if (status & BD_ENET_TX_DEF)
535 dev->stats.collisions++;
537 /* Free the sk buffer associated with this last transmit.
539 dev_kfree_skb_any(skb);
540 fep->tx_skbuff[fep->skb_dirty] = NULL;
541 fep->skb_dirty = (fep->skb_dirty + 1) & TX_RING_MOD_MASK;
543 /* Update pointer to next buffer descriptor to be transmitted.
545 if (status & BD_ENET_TX_WRAP)
546 bdp = fep->tx_bd_base;
550 /* Since we have freed up a buffer, the ring is no longer
555 if (netif_queue_stopped(dev))
556 netif_wake_queue(dev);
559 fep->dirty_tx = (cbd_t *)bdp;
560 spin_unlock(&fep->lock);
564 /* During a receive, the cur_rx points to the current incoming buffer.
565 * When we update through the ring, if the next incoming buffer has
566 * not been given to the system, we just set the empty indicator,
567 * effectively tossing the packet.
570 fec_enet_rx(struct net_device *dev)
572 struct fec_enet_private *fep;
573 volatile fec_t *fecp;
575 unsigned short status;
584 fep = netdev_priv(dev);
585 fecp = (volatile fec_t*)dev->base_addr;
587 /* First, grab all of the stats for the incoming packet.
588 * These get messed up if we get called due to a busy condition.
592 while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) {
594 #ifndef final_version
595 /* Since we have allocated space to hold a complete frame,
596 * the last indicator should be set.
598 if ((status & BD_ENET_RX_LAST) == 0)
599 printk("FEC ENET: rcv is not +last\n");
603 goto rx_processing_done;
605 /* Check for errors. */
606 if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO |
607 BD_ENET_RX_CR | BD_ENET_RX_OV)) {
608 dev->stats.rx_errors++;
609 if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH)) {
610 /* Frame too long or too short. */
611 dev->stats.rx_length_errors++;
613 if (status & BD_ENET_RX_NO) /* Frame alignment */
614 dev->stats.rx_frame_errors++;
615 if (status & BD_ENET_RX_CR) /* CRC Error */
616 dev->stats.rx_crc_errors++;
617 if (status & BD_ENET_RX_OV) /* FIFO overrun */
618 dev->stats.rx_fifo_errors++;
621 /* Report late collisions as a frame error.
622 * On this error, the BD is closed, but we don't know what we
623 * have in the buffer. So, just drop this frame on the floor.
625 if (status & BD_ENET_RX_CL) {
626 dev->stats.rx_errors++;
627 dev->stats.rx_frame_errors++;
628 goto rx_processing_done;
631 /* Process the incoming frame.
633 dev->stats.rx_packets++;
634 pkt_len = bdp->cbd_datlen;
635 dev->stats.rx_bytes += pkt_len;
636 data = (__u8*)__va(bdp->cbd_bufaddr);
638 /* This does 16 byte alignment, exactly what we need.
639 * The packet length includes FCS, but we don't want to
640 * include that when passing upstream as it messes up
641 * bridging applications.
643 skb = dev_alloc_skb(pkt_len-4);
646 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
647 dev->stats.rx_dropped++;
649 skb_put(skb,pkt_len-4); /* Make room */
650 skb_copy_to_linear_data(skb, data, pkt_len-4);
651 skb->protocol=eth_type_trans(skb,dev);
656 /* Clear the status flags for this buffer.
658 status &= ~BD_ENET_RX_STATS;
660 /* Mark the buffer empty.
662 status |= BD_ENET_RX_EMPTY;
663 bdp->cbd_sc = status;
665 /* Update BD pointer to next entry.
667 if (status & BD_ENET_RX_WRAP)
668 bdp = fep->rx_bd_base;
673 /* Doing this here will keep the FEC running while we process
674 * incoming frames. On a heavily loaded network, we should be
675 * able to keep up at the expense of system resources.
677 fecp->fec_r_des_active = 0;
679 } /* while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) */
680 fep->cur_rx = (cbd_t *)bdp;
683 /* Doing this here will allow us to process all frames in the
684 * ring before the FEC is allowed to put more there. On a heavily
685 * loaded network, some frames may be lost. Unfortunately, this
686 * increases the interrupt overhead since we can potentially work
687 * our way back to the interrupt return only to come right back
690 fecp->fec_r_des_active = 0;
695 /* called from interrupt context */
697 fec_enet_mii(struct net_device *dev)
699 struct fec_enet_private *fep;
704 fep = netdev_priv(dev);
706 mii_reg = ep->fec_mii_data;
708 spin_lock(&fep->lock);
710 if ((mip = mii_head) == NULL) {
711 printk("MII and no head!\n");
715 if (mip->mii_func != NULL)
716 (*(mip->mii_func))(mii_reg, dev);
718 mii_head = mip->mii_next;
719 mip->mii_next = mii_free;
722 if ((mip = mii_head) != NULL)
723 ep->fec_mii_data = mip->mii_regval;
726 spin_unlock(&fep->lock);
730 mii_queue(struct net_device *dev, int regval, void (*func)(uint, struct net_device *))
732 struct fec_enet_private *fep;
737 /* Add PHY address to register command.
739 fep = netdev_priv(dev);
740 regval |= fep->phy_addr << 23;
744 spin_lock_irqsave(&fep->lock,flags);
746 if ((mip = mii_free) != NULL) {
747 mii_free = mip->mii_next;
748 mip->mii_regval = regval;
749 mip->mii_func = func;
750 mip->mii_next = NULL;
752 mii_tail->mii_next = mip;
755 mii_head = mii_tail = mip;
756 fep->hwp->fec_mii_data = regval;
762 spin_unlock_irqrestore(&fep->lock,flags);
767 static void mii_do_cmd(struct net_device *dev, const phy_cmd_t *c)
772 for (; c->mii_data != mk_mii_end; c++)
773 mii_queue(dev, c->mii_data, c->funct);
776 static void mii_parse_sr(uint mii_reg, struct net_device *dev)
778 struct fec_enet_private *fep = netdev_priv(dev);
779 volatile uint *s = &(fep->phy_status);
782 status = *s & ~(PHY_STAT_LINK | PHY_STAT_FAULT | PHY_STAT_ANC);
784 if (mii_reg & 0x0004)
785 status |= PHY_STAT_LINK;
786 if (mii_reg & 0x0010)
787 status |= PHY_STAT_FAULT;
788 if (mii_reg & 0x0020)
789 status |= PHY_STAT_ANC;
793 static void mii_parse_cr(uint mii_reg, struct net_device *dev)
795 struct fec_enet_private *fep = netdev_priv(dev);
796 volatile uint *s = &(fep->phy_status);
799 status = *s & ~(PHY_CONF_ANE | PHY_CONF_LOOP);
801 if (mii_reg & 0x1000)
802 status |= PHY_CONF_ANE;
803 if (mii_reg & 0x4000)
804 status |= PHY_CONF_LOOP;
808 static void mii_parse_anar(uint mii_reg, struct net_device *dev)
810 struct fec_enet_private *fep = netdev_priv(dev);
811 volatile uint *s = &(fep->phy_status);
814 status = *s & ~(PHY_CONF_SPMASK);
816 if (mii_reg & 0x0020)
817 status |= PHY_CONF_10HDX;
818 if (mii_reg & 0x0040)
819 status |= PHY_CONF_10FDX;
820 if (mii_reg & 0x0080)
821 status |= PHY_CONF_100HDX;
822 if (mii_reg & 0x00100)
823 status |= PHY_CONF_100FDX;
827 /* ------------------------------------------------------------------------- */
828 /* The Level one LXT970 is used by many boards */
830 #define MII_LXT970_MIRROR 16 /* Mirror register */
831 #define MII_LXT970_IER 17 /* Interrupt Enable Register */
832 #define MII_LXT970_ISR 18 /* Interrupt Status Register */
833 #define MII_LXT970_CONFIG 19 /* Configuration Register */
834 #define MII_LXT970_CSR 20 /* Chip Status Register */
836 static void mii_parse_lxt970_csr(uint mii_reg, struct net_device *dev)
838 struct fec_enet_private *fep = netdev_priv(dev);
839 volatile uint *s = &(fep->phy_status);
842 status = *s & ~(PHY_STAT_SPMASK);
843 if (mii_reg & 0x0800) {
844 if (mii_reg & 0x1000)
845 status |= PHY_STAT_100FDX;
847 status |= PHY_STAT_100HDX;
849 if (mii_reg & 0x1000)
850 status |= PHY_STAT_10FDX;
852 status |= PHY_STAT_10HDX;
857 static phy_cmd_t const phy_cmd_lxt970_config[] = {
858 { mk_mii_read(MII_REG_CR), mii_parse_cr },
859 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
862 static phy_cmd_t const phy_cmd_lxt970_startup[] = { /* enable interrupts */
863 { mk_mii_write(MII_LXT970_IER, 0x0002), NULL },
864 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
867 static phy_cmd_t const phy_cmd_lxt970_ack_int[] = {
868 /* read SR and ISR to acknowledge */
869 { mk_mii_read(MII_REG_SR), mii_parse_sr },
870 { mk_mii_read(MII_LXT970_ISR), NULL },
872 /* find out the current status */
873 { mk_mii_read(MII_LXT970_CSR), mii_parse_lxt970_csr },
876 static phy_cmd_t const phy_cmd_lxt970_shutdown[] = { /* disable interrupts */
877 { mk_mii_write(MII_LXT970_IER, 0x0000), NULL },
880 static phy_info_t const phy_info_lxt970 = {
883 .config = phy_cmd_lxt970_config,
884 .startup = phy_cmd_lxt970_startup,
885 .ack_int = phy_cmd_lxt970_ack_int,
886 .shutdown = phy_cmd_lxt970_shutdown
889 /* ------------------------------------------------------------------------- */
890 /* The Level one LXT971 is used on some of my custom boards */
892 /* register definitions for the 971 */
894 #define MII_LXT971_PCR 16 /* Port Control Register */
895 #define MII_LXT971_SR2 17 /* Status Register 2 */
896 #define MII_LXT971_IER 18 /* Interrupt Enable Register */
897 #define MII_LXT971_ISR 19 /* Interrupt Status Register */
898 #define MII_LXT971_LCR 20 /* LED Control Register */
899 #define MII_LXT971_TCR 30 /* Transmit Control Register */
902 * I had some nice ideas of running the MDIO faster...
903 * The 971 should support 8MHz and I tried it, but things acted really
904 * weird, so 2.5 MHz ought to be enough for anyone...
907 static void mii_parse_lxt971_sr2(uint mii_reg, struct net_device *dev)
909 struct fec_enet_private *fep = netdev_priv(dev);
910 volatile uint *s = &(fep->phy_status);
913 status = *s & ~(PHY_STAT_SPMASK | PHY_STAT_LINK | PHY_STAT_ANC);
915 if (mii_reg & 0x0400) {
917 status |= PHY_STAT_LINK;
921 if (mii_reg & 0x0080)
922 status |= PHY_STAT_ANC;
923 if (mii_reg & 0x4000) {
924 if (mii_reg & 0x0200)
925 status |= PHY_STAT_100FDX;
927 status |= PHY_STAT_100HDX;
929 if (mii_reg & 0x0200)
930 status |= PHY_STAT_10FDX;
932 status |= PHY_STAT_10HDX;
934 if (mii_reg & 0x0008)
935 status |= PHY_STAT_FAULT;
940 static phy_cmd_t const phy_cmd_lxt971_config[] = {
941 /* limit to 10MBit because my prototype board
942 * doesn't work with 100. */
943 { mk_mii_read(MII_REG_CR), mii_parse_cr },
944 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
945 { mk_mii_read(MII_LXT971_SR2), mii_parse_lxt971_sr2 },
948 static phy_cmd_t const phy_cmd_lxt971_startup[] = { /* enable interrupts */
949 { mk_mii_write(MII_LXT971_IER, 0x00f2), NULL },
950 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
951 { mk_mii_write(MII_LXT971_LCR, 0xd422), NULL }, /* LED config */
952 /* Somehow does the 971 tell me that the link is down
953 * the first read after power-up.
954 * read here to get a valid value in ack_int */
955 { mk_mii_read(MII_REG_SR), mii_parse_sr },
958 static phy_cmd_t const phy_cmd_lxt971_ack_int[] = {
959 /* acknowledge the int before reading status ! */
960 { mk_mii_read(MII_LXT971_ISR), NULL },
961 /* find out the current status */
962 { mk_mii_read(MII_REG_SR), mii_parse_sr },
963 { mk_mii_read(MII_LXT971_SR2), mii_parse_lxt971_sr2 },
966 static phy_cmd_t const phy_cmd_lxt971_shutdown[] = { /* disable interrupts */
967 { mk_mii_write(MII_LXT971_IER, 0x0000), NULL },
970 static phy_info_t const phy_info_lxt971 = {
973 .config = phy_cmd_lxt971_config,
974 .startup = phy_cmd_lxt971_startup,
975 .ack_int = phy_cmd_lxt971_ack_int,
976 .shutdown = phy_cmd_lxt971_shutdown
979 /* ------------------------------------------------------------------------- */
980 /* The Quality Semiconductor QS6612 is used on the RPX CLLF */
982 /* register definitions */
984 #define MII_QS6612_MCR 17 /* Mode Control Register */
985 #define MII_QS6612_FTR 27 /* Factory Test Register */
986 #define MII_QS6612_MCO 28 /* Misc. Control Register */
987 #define MII_QS6612_ISR 29 /* Interrupt Source Register */
988 #define MII_QS6612_IMR 30 /* Interrupt Mask Register */
989 #define MII_QS6612_PCR 31 /* 100BaseTx PHY Control Reg. */
991 static void mii_parse_qs6612_pcr(uint mii_reg, struct net_device *dev)
993 struct fec_enet_private *fep = netdev_priv(dev);
994 volatile uint *s = &(fep->phy_status);
997 status = *s & ~(PHY_STAT_SPMASK);
999 switch((mii_reg >> 2) & 7) {
1000 case 1: status |= PHY_STAT_10HDX; break;
1001 case 2: status |= PHY_STAT_100HDX; break;
1002 case 5: status |= PHY_STAT_10FDX; break;
1003 case 6: status |= PHY_STAT_100FDX; break;
1009 static phy_cmd_t const phy_cmd_qs6612_config[] = {
1010 /* The PHY powers up isolated on the RPX,
1011 * so send a command to allow operation.
1013 { mk_mii_write(MII_QS6612_PCR, 0x0dc0), NULL },
1015 /* parse cr and anar to get some info */
1016 { mk_mii_read(MII_REG_CR), mii_parse_cr },
1017 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
1020 static phy_cmd_t const phy_cmd_qs6612_startup[] = { /* enable interrupts */
1021 { mk_mii_write(MII_QS6612_IMR, 0x003a), NULL },
1022 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
1025 static phy_cmd_t const phy_cmd_qs6612_ack_int[] = {
1026 /* we need to read ISR, SR and ANER to acknowledge */
1027 { mk_mii_read(MII_QS6612_ISR), NULL },
1028 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1029 { mk_mii_read(MII_REG_ANER), NULL },
1031 /* read pcr to get info */
1032 { mk_mii_read(MII_QS6612_PCR), mii_parse_qs6612_pcr },
1035 static phy_cmd_t const phy_cmd_qs6612_shutdown[] = { /* disable interrupts */
1036 { mk_mii_write(MII_QS6612_IMR, 0x0000), NULL },
1039 static phy_info_t const phy_info_qs6612 = {
1042 .config = phy_cmd_qs6612_config,
1043 .startup = phy_cmd_qs6612_startup,
1044 .ack_int = phy_cmd_qs6612_ack_int,
1045 .shutdown = phy_cmd_qs6612_shutdown
1048 /* ------------------------------------------------------------------------- */
1049 /* AMD AM79C874 phy */
1051 /* register definitions for the 874 */
1053 #define MII_AM79C874_MFR 16 /* Miscellaneous Feature Register */
1054 #define MII_AM79C874_ICSR 17 /* Interrupt/Status Register */
1055 #define MII_AM79C874_DR 18 /* Diagnostic Register */
1056 #define MII_AM79C874_PMLR 19 /* Power and Loopback Register */
1057 #define MII_AM79C874_MCR 21 /* ModeControl Register */
1058 #define MII_AM79C874_DC 23 /* Disconnect Counter */
1059 #define MII_AM79C874_REC 24 /* Recieve Error Counter */
1061 static void mii_parse_am79c874_dr(uint mii_reg, struct net_device *dev)
1063 struct fec_enet_private *fep = netdev_priv(dev);
1064 volatile uint *s = &(fep->phy_status);
1067 status = *s & ~(PHY_STAT_SPMASK | PHY_STAT_ANC);
1069 if (mii_reg & 0x0080)
1070 status |= PHY_STAT_ANC;
1071 if (mii_reg & 0x0400)
1072 status |= ((mii_reg & 0x0800) ? PHY_STAT_100FDX : PHY_STAT_100HDX);
1074 status |= ((mii_reg & 0x0800) ? PHY_STAT_10FDX : PHY_STAT_10HDX);
1079 static phy_cmd_t const phy_cmd_am79c874_config[] = {
1080 { mk_mii_read(MII_REG_CR), mii_parse_cr },
1081 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
1082 { mk_mii_read(MII_AM79C874_DR), mii_parse_am79c874_dr },
1085 static phy_cmd_t const phy_cmd_am79c874_startup[] = { /* enable interrupts */
1086 { mk_mii_write(MII_AM79C874_ICSR, 0xff00), NULL },
1087 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
1088 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1091 static phy_cmd_t const phy_cmd_am79c874_ack_int[] = {
1092 /* find out the current status */
1093 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1094 { mk_mii_read(MII_AM79C874_DR), mii_parse_am79c874_dr },
1095 /* we only need to read ISR to acknowledge */
1096 { mk_mii_read(MII_AM79C874_ICSR), NULL },
1099 static phy_cmd_t const phy_cmd_am79c874_shutdown[] = { /* disable interrupts */
1100 { mk_mii_write(MII_AM79C874_ICSR, 0x0000), NULL },
1103 static phy_info_t const phy_info_am79c874 = {
1106 .config = phy_cmd_am79c874_config,
1107 .startup = phy_cmd_am79c874_startup,
1108 .ack_int = phy_cmd_am79c874_ack_int,
1109 .shutdown = phy_cmd_am79c874_shutdown
1113 /* ------------------------------------------------------------------------- */
1114 /* Kendin KS8721BL phy */
1116 /* register definitions for the 8721 */
1118 #define MII_KS8721BL_RXERCR 21
1119 #define MII_KS8721BL_ICSR 22
1120 #define MII_KS8721BL_PHYCR 31
1122 static phy_cmd_t const phy_cmd_ks8721bl_config[] = {
1123 { mk_mii_read(MII_REG_CR), mii_parse_cr },
1124 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
1127 static phy_cmd_t const phy_cmd_ks8721bl_startup[] = { /* enable interrupts */
1128 { mk_mii_write(MII_KS8721BL_ICSR, 0xff00), NULL },
1129 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
1130 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1133 static phy_cmd_t const phy_cmd_ks8721bl_ack_int[] = {
1134 /* find out the current status */
1135 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1136 /* we only need to read ISR to acknowledge */
1137 { mk_mii_read(MII_KS8721BL_ICSR), NULL },
1140 static phy_cmd_t const phy_cmd_ks8721bl_shutdown[] = { /* disable interrupts */
1141 { mk_mii_write(MII_KS8721BL_ICSR, 0x0000), NULL },
1144 static phy_info_t const phy_info_ks8721bl = {
1147 .config = phy_cmd_ks8721bl_config,
1148 .startup = phy_cmd_ks8721bl_startup,
1149 .ack_int = phy_cmd_ks8721bl_ack_int,
1150 .shutdown = phy_cmd_ks8721bl_shutdown
1153 /* ------------------------------------------------------------------------- */
1154 /* register definitions for the DP83848 */
1156 #define MII_DP8384X_PHYSTST 16 /* PHY Status Register */
1158 static void mii_parse_dp8384x_sr2(uint mii_reg, struct net_device *dev)
1160 struct fec_enet_private *fep = dev->priv;
1161 volatile uint *s = &(fep->phy_status);
1163 *s &= ~(PHY_STAT_SPMASK | PHY_STAT_LINK | PHY_STAT_ANC);
1166 if (mii_reg & 0x0001) {
1168 *s |= PHY_STAT_LINK;
1171 /* Status of link */
1172 if (mii_reg & 0x0010) /* Autonegotioation complete */
1174 if (mii_reg & 0x0002) { /* 10MBps? */
1175 if (mii_reg & 0x0004) /* Full Duplex? */
1176 *s |= PHY_STAT_10FDX;
1178 *s |= PHY_STAT_10HDX;
1179 } else { /* 100 Mbps? */
1180 if (mii_reg & 0x0004) /* Full Duplex? */
1181 *s |= PHY_STAT_100FDX;
1183 *s |= PHY_STAT_100HDX;
1185 if (mii_reg & 0x0008)
1186 *s |= PHY_STAT_FAULT;
1189 static phy_info_t phy_info_dp83848= {
1193 (const phy_cmd_t []) { /* config */
1194 { mk_mii_read(MII_REG_CR), mii_parse_cr },
1195 { mk_mii_read(MII_REG_ANAR), mii_parse_anar },
1196 { mk_mii_read(MII_DP8384X_PHYSTST), mii_parse_dp8384x_sr2 },
1199 (const phy_cmd_t []) { /* startup - enable interrupts */
1200 { mk_mii_write(MII_REG_CR, 0x1200), NULL }, /* autonegotiate */
1201 { mk_mii_read(MII_REG_SR), mii_parse_sr },
1204 (const phy_cmd_t []) { /* ack_int - never happens, no interrupt */
1207 (const phy_cmd_t []) { /* shutdown */
1212 /* ------------------------------------------------------------------------- */
1214 static phy_info_t const * const phy_info[] = {
1224 /* ------------------------------------------------------------------------- */
1225 #if !defined(CONFIG_M532x)
1226 #ifdef CONFIG_RPXCLASSIC
1228 mii_link_interrupt(void *dev_id);
1231 mii_link_interrupt(int irq, void * dev_id);
1235 #if defined(CONFIG_M5272)
1237 * Code specific to Coldfire 5272 setup.
1239 static void __inline__ fec_request_intrs(struct net_device *dev)
1241 volatile unsigned long *icrp;
1242 static const struct idesc {
1245 irq_handler_t handler;
1247 { "fec(RX)", 86, fec_enet_interrupt },
1248 { "fec(TX)", 87, fec_enet_interrupt },
1249 { "fec(OTHER)", 88, fec_enet_interrupt },
1250 { "fec(MII)", 66, mii_link_interrupt },
1254 /* Setup interrupt handlers. */
1255 for (idp = id; idp->name; idp++) {
1256 if (request_irq(idp->irq, idp->handler, IRQF_DISABLED, idp->name, dev) != 0)
1257 printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, idp->irq);
1260 /* Unmask interrupt at ColdFire 5272 SIM */
1261 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR3);
1263 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
1267 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1269 volatile fec_t *fecp;
1272 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
1273 fecp->fec_x_cntrl = 0x00;
1276 * Set MII speed to 2.5 MHz
1277 * See 5272 manual section 11.5.8: MSCR
1279 fep->phy_speed = ((((MCF_CLK / 4) / (2500000 / 10)) + 5) / 10) * 2;
1280 fecp->fec_mii_speed = fep->phy_speed;
1282 fec_restart(dev, 0);
1285 static void __inline__ fec_get_mac(struct net_device *dev)
1287 struct fec_enet_private *fep = netdev_priv(dev);
1288 volatile fec_t *fecp;
1289 unsigned char *iap, tmpaddr[ETH_ALEN];
1295 * Get MAC address from FLASH.
1296 * If it is all 1's or 0's, use the default.
1298 iap = (unsigned char *)FEC_FLASHMAC;
1299 if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
1300 (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
1301 iap = fec_mac_default;
1302 if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
1303 (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
1304 iap = fec_mac_default;
1306 *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
1307 *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
1311 memcpy(dev->dev_addr, iap, ETH_ALEN);
1313 /* Adjust MAC if using default MAC address */
1314 if (iap == fec_mac_default)
1315 dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
1318 static void __inline__ fec_enable_phy_intr(void)
1322 static void __inline__ fec_disable_phy_intr(void)
1324 volatile unsigned long *icrp;
1325 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
1329 static void __inline__ fec_phy_ack_intr(void)
1331 volatile unsigned long *icrp;
1332 /* Acknowledge the interrupt */
1333 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
1337 static void __inline__ fec_localhw_setup(void)
1342 * Do not need to make region uncached on 5272.
1344 static void __inline__ fec_uncache(unsigned long addr)
1348 /* ------------------------------------------------------------------------- */
1350 #elif defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
1353 * Code specific to Coldfire 5230/5231/5232/5234/5235,
1354 * the 5270/5271/5274/5275 and 5280/5282 setups.
1356 static void __inline__ fec_request_intrs(struct net_device *dev)
1358 struct fec_enet_private *fep;
1360 static const struct idesc {
1366 { "fec(TXFIFO)", 25 },
1367 { "fec(TXCR)", 26 },
1372 { "fec(HBERR)", 31 },
1374 { "fec(EBERR)", 33 },
1375 { "fec(BABT)", 34 },
1376 { "fec(BABR)", 35 },
1380 fep = netdev_priv(dev);
1381 b = (fep->index) ? 128 : 64;
1383 /* Setup interrupt handlers. */
1384 for (idp = id; idp->name; idp++) {
1385 if (request_irq(b+idp->irq, fec_enet_interrupt, IRQF_DISABLED, idp->name, dev) != 0)
1386 printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, b+idp->irq);
1389 /* Unmask interrupts at ColdFire 5280/5282 interrupt controller */
1391 volatile unsigned char *icrp;
1392 volatile unsigned long *imrp;
1395 b = (fep->index) ? MCFICM_INTC1 : MCFICM_INTC0;
1396 icrp = (volatile unsigned char *) (MCF_IPSBAR + b +
1398 for (i = 23, ilip = 0x28; (i < 36); i++)
1401 imrp = (volatile unsigned long *) (MCF_IPSBAR + b +
1403 *imrp &= ~0x0000000f;
1404 imrp = (volatile unsigned long *) (MCF_IPSBAR + b +
1406 *imrp &= ~0xff800001;
1409 #if defined(CONFIG_M528x)
1410 /* Set up gpio outputs for MII lines */
1412 volatile u16 *gpio_paspar;
1413 volatile u8 *gpio_pehlpar;
1415 gpio_paspar = (volatile u16 *) (MCF_IPSBAR + 0x100056);
1416 gpio_pehlpar = (volatile u16 *) (MCF_IPSBAR + 0x100058);
1417 *gpio_paspar |= 0x0f00;
1418 *gpio_pehlpar = 0xc0;
1422 #if defined(CONFIG_M527x)
1423 /* Set up gpio outputs for MII lines */
1425 volatile u8 *gpio_par_fec;
1426 volatile u16 *gpio_par_feci2c;
1428 gpio_par_feci2c = (volatile u16 *)(MCF_IPSBAR + 0x100082);
1429 /* Set up gpio outputs for FEC0 MII lines */
1430 gpio_par_fec = (volatile u8 *)(MCF_IPSBAR + 0x100078);
1432 *gpio_par_feci2c |= 0x0f00;
1433 *gpio_par_fec |= 0xc0;
1435 #if defined(CONFIG_FEC2)
1436 /* Set up gpio outputs for FEC1 MII lines */
1437 gpio_par_fec = (volatile u8 *)(MCF_IPSBAR + 0x100079);
1439 *gpio_par_feci2c |= 0x00a0;
1440 *gpio_par_fec |= 0xc0;
1441 #endif /* CONFIG_FEC2 */
1443 #endif /* CONFIG_M527x */
1446 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1448 volatile fec_t *fecp;
1451 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
1452 fecp->fec_x_cntrl = 0x00;
1455 * Set MII speed to 2.5 MHz
1456 * See 5282 manual section 17.5.4.7: MSCR
1458 fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
1459 fecp->fec_mii_speed = fep->phy_speed;
1461 fec_restart(dev, 0);
1464 static void __inline__ fec_get_mac(struct net_device *dev)
1466 struct fec_enet_private *fep = netdev_priv(dev);
1467 volatile fec_t *fecp;
1468 unsigned char *iap, tmpaddr[ETH_ALEN];
1474 * Get MAC address from FLASH.
1475 * If it is all 1's or 0's, use the default.
1478 if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
1479 (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
1480 iap = fec_mac_default;
1481 if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
1482 (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
1483 iap = fec_mac_default;
1485 *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
1486 *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
1490 memcpy(dev->dev_addr, iap, ETH_ALEN);
1492 /* Adjust MAC if using default MAC address */
1493 if (iap == fec_mac_default)
1494 dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
1497 static void __inline__ fec_enable_phy_intr(void)
1501 static void __inline__ fec_disable_phy_intr(void)
1505 static void __inline__ fec_phy_ack_intr(void)
1509 static void __inline__ fec_localhw_setup(void)
1514 * Do not need to make region uncached on 5272.
1516 static void __inline__ fec_uncache(unsigned long addr)
1520 /* ------------------------------------------------------------------------- */
1522 #elif defined(CONFIG_M520x)
1525 * Code specific to Coldfire 520x
1527 static void __inline__ fec_request_intrs(struct net_device *dev)
1529 struct fec_enet_private *fep;
1531 static const struct idesc {
1537 { "fec(TXFIFO)", 25 },
1538 { "fec(TXCR)", 26 },
1543 { "fec(HBERR)", 31 },
1545 { "fec(EBERR)", 33 },
1546 { "fec(BABT)", 34 },
1547 { "fec(BABR)", 35 },
1551 fep = netdev_priv(dev);
1554 /* Setup interrupt handlers. */
1555 for (idp = id; idp->name; idp++) {
1556 if (request_irq(b+idp->irq, fec_enet_interrupt, IRQF_DISABLED, idp->name,dev) != 0)
1557 printk("FEC: Could not allocate %s IRQ(%d)!\n", idp->name, b+idp->irq);
1560 /* Unmask interrupts at ColdFire interrupt controller */
1562 volatile unsigned char *icrp;
1563 volatile unsigned long *imrp;
1565 icrp = (volatile unsigned char *) (MCF_IPSBAR + MCFICM_INTC0 +
1567 for (b = 36; (b < 49); b++)
1569 imrp = (volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 +
1571 *imrp &= ~0x0001FFF0;
1573 *(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FEC) |= 0xf0;
1574 *(volatile unsigned char *)(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C) |= 0x0f;
1577 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1579 volatile fec_t *fecp;
1582 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
1583 fecp->fec_x_cntrl = 0x00;
1586 * Set MII speed to 2.5 MHz
1587 * See 5282 manual section 17.5.4.7: MSCR
1589 fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
1590 fecp->fec_mii_speed = fep->phy_speed;
1592 fec_restart(dev, 0);
1595 static void __inline__ fec_get_mac(struct net_device *dev)
1597 struct fec_enet_private *fep = netdev_priv(dev);
1598 volatile fec_t *fecp;
1599 unsigned char *iap, tmpaddr[ETH_ALEN];
1605 * Get MAC address from FLASH.
1606 * If it is all 1's or 0's, use the default.
1609 if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
1610 (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
1611 iap = fec_mac_default;
1612 if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
1613 (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
1614 iap = fec_mac_default;
1616 *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
1617 *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
1621 memcpy(dev->dev_addr, iap, ETH_ALEN);
1623 /* Adjust MAC if using default MAC address */
1624 if (iap == fec_mac_default)
1625 dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
1628 static void __inline__ fec_enable_phy_intr(void)
1632 static void __inline__ fec_disable_phy_intr(void)
1636 static void __inline__ fec_phy_ack_intr(void)
1640 static void __inline__ fec_localhw_setup(void)
1644 static void __inline__ fec_uncache(unsigned long addr)
1648 /* ------------------------------------------------------------------------- */
1650 #elif defined(CONFIG_M532x)
1652 * Code specific for M532x
1654 static void __inline__ fec_request_intrs(struct net_device *dev)
1656 struct fec_enet_private *fep;
1658 static const struct idesc {
1664 { "fec(TXFIFO)", 38 },
1665 { "fec(TXCR)", 39 },
1670 { "fec(HBERR)", 44 },
1672 { "fec(EBERR)", 46 },
1673 { "fec(BABT)", 47 },
1674 { "fec(BABR)", 48 },
1678 fep = netdev_priv(dev);
1679 b = (fep->index) ? 128 : 64;
1681 /* Setup interrupt handlers. */
1682 for (idp = id; idp->name; idp++) {
1683 if (request_irq(b+idp->irq, fec_enet_interrupt, IRQF_DISABLED, idp->name,dev) != 0)
1684 printk("FEC: Could not allocate %s IRQ(%d)!\n",
1685 idp->name, b+idp->irq);
1688 /* Unmask interrupts */
1689 MCF_INTC0_ICR36 = 0x2;
1690 MCF_INTC0_ICR37 = 0x2;
1691 MCF_INTC0_ICR38 = 0x2;
1692 MCF_INTC0_ICR39 = 0x2;
1693 MCF_INTC0_ICR40 = 0x2;
1694 MCF_INTC0_ICR41 = 0x2;
1695 MCF_INTC0_ICR42 = 0x2;
1696 MCF_INTC0_ICR43 = 0x2;
1697 MCF_INTC0_ICR44 = 0x2;
1698 MCF_INTC0_ICR45 = 0x2;
1699 MCF_INTC0_ICR46 = 0x2;
1700 MCF_INTC0_ICR47 = 0x2;
1701 MCF_INTC0_ICR48 = 0x2;
1703 MCF_INTC0_IMRH &= ~(
1704 MCF_INTC_IMRH_INT_MASK36 |
1705 MCF_INTC_IMRH_INT_MASK37 |
1706 MCF_INTC_IMRH_INT_MASK38 |
1707 MCF_INTC_IMRH_INT_MASK39 |
1708 MCF_INTC_IMRH_INT_MASK40 |
1709 MCF_INTC_IMRH_INT_MASK41 |
1710 MCF_INTC_IMRH_INT_MASK42 |
1711 MCF_INTC_IMRH_INT_MASK43 |
1712 MCF_INTC_IMRH_INT_MASK44 |
1713 MCF_INTC_IMRH_INT_MASK45 |
1714 MCF_INTC_IMRH_INT_MASK46 |
1715 MCF_INTC_IMRH_INT_MASK47 |
1716 MCF_INTC_IMRH_INT_MASK48 );
1718 /* Set up gpio outputs for MII lines */
1719 MCF_GPIO_PAR_FECI2C |= (0 |
1720 MCF_GPIO_PAR_FECI2C_PAR_MDC_EMDC |
1721 MCF_GPIO_PAR_FECI2C_PAR_MDIO_EMDIO);
1722 MCF_GPIO_PAR_FEC = (0 |
1723 MCF_GPIO_PAR_FEC_PAR_FEC_7W_FEC |
1724 MCF_GPIO_PAR_FEC_PAR_FEC_MII_FEC);
1727 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1729 volatile fec_t *fecp;
1732 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;
1733 fecp->fec_x_cntrl = 0x00;
1736 * Set MII speed to 2.5 MHz
1738 fep->phy_speed = ((((MCF_CLK / 2) / (2500000 / 10)) + 5) / 10) * 2;
1739 fecp->fec_mii_speed = fep->phy_speed;
1741 fec_restart(dev, 0);
1744 static void __inline__ fec_get_mac(struct net_device *dev)
1746 struct fec_enet_private *fep = netdev_priv(dev);
1747 volatile fec_t *fecp;
1748 unsigned char *iap, tmpaddr[ETH_ALEN];
1754 * Get MAC address from FLASH.
1755 * If it is all 1's or 0's, use the default.
1758 if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
1759 (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
1760 iap = fec_mac_default;
1761 if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
1762 (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
1763 iap = fec_mac_default;
1765 *((unsigned long *) &tmpaddr[0]) = fecp->fec_addr_low;
1766 *((unsigned short *) &tmpaddr[4]) = (fecp->fec_addr_high >> 16);
1770 memcpy(dev->dev_addr, iap, ETH_ALEN);
1772 /* Adjust MAC if using default MAC address */
1773 if (iap == fec_mac_default)
1774 dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;
1777 static void __inline__ fec_enable_phy_intr(void)
1781 static void __inline__ fec_disable_phy_intr(void)
1785 static void __inline__ fec_phy_ack_intr(void)
1789 static void __inline__ fec_localhw_setup(void)
1794 * Do not need to make region uncached on 532x.
1796 static void __inline__ fec_uncache(unsigned long addr)
1800 /* ------------------------------------------------------------------------- */
1806 * Code specific to the MPC860T setup.
1808 static void __inline__ fec_request_intrs(struct net_device *dev)
1810 volatile immap_t *immap;
1812 immap = (immap_t *)IMAP_ADDR; /* pointer to internal registers */
1814 if (request_8xxirq(FEC_INTERRUPT, fec_enet_interrupt, 0, "fec", dev) != 0)
1815 panic("Could not allocate FEC IRQ!");
1817 #ifdef CONFIG_RPXCLASSIC
1818 /* Make Port C, bit 15 an input that causes interrupts.
1820 immap->im_ioport.iop_pcpar &= ~0x0001;
1821 immap->im_ioport.iop_pcdir &= ~0x0001;
1822 immap->im_ioport.iop_pcso &= ~0x0001;
1823 immap->im_ioport.iop_pcint |= 0x0001;
1824 cpm_install_handler(CPMVEC_PIO_PC15, mii_link_interrupt, dev);
1826 /* Make LEDS reflect Link status.
1828 *((uint *) RPX_CSR_ADDR) &= ~BCSR2_FETHLEDMODE;
1831 if (request_8xxirq(SIU_IRQ2, mii_link_interrupt, 0, "mii", dev) != 0)
1832 panic("Could not allocate MII IRQ!");
1836 static void __inline__ fec_get_mac(struct net_device *dev)
1841 memcpy(dev->dev_addr, bd->bi_enetaddr, ETH_ALEN);
1843 #ifdef CONFIG_RPXCLASSIC
1844 /* The Embedded Planet boards have only one MAC address in
1845 * the EEPROM, but can have two Ethernet ports. For the
1846 * FEC port, we create another address by setting one of
1847 * the address bits above something that would have (up to
1848 * now) been allocated.
1850 dev->dev_adrd[3] |= 0x80;
1854 static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
1856 extern uint _get_IMMR(void);
1857 volatile immap_t *immap;
1858 volatile fec_t *fecp;
1861 immap = (immap_t *)IMAP_ADDR; /* pointer to internal registers */
1863 /* Configure all of port D for MII.
1865 immap->im_ioport.iop_pdpar = 0x1fff;
1867 /* Bits moved from Rev. D onward.
1869 if ((_get_IMMR() & 0xffff) < 0x0501)
1870 immap->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */
1872 immap->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */
1874 /* Set MII speed to 2.5 MHz
1876 fecp->fec_mii_speed = fep->phy_speed =
1877 ((bd->bi_busfreq * 1000000) / 2500000) & 0x7e;
1880 static void __inline__ fec_enable_phy_intr(void)
1882 volatile fec_t *fecp;
1886 /* Enable MII command finished interrupt
1888 fecp->fec_ivec = (FEC_INTERRUPT/2) << 29;
1891 static void __inline__ fec_disable_phy_intr(void)
1895 static void __inline__ fec_phy_ack_intr(void)
1899 static void __inline__ fec_localhw_setup(void)
1901 volatile fec_t *fecp;
1904 fecp->fec_r_hash = PKT_MAXBUF_SIZE;
1905 /* Enable big endian and don't care about SDMA FC.
1907 fecp->fec_fun_code = 0x78000000;
1910 static void __inline__ fec_uncache(unsigned long addr)
1913 pte = va_to_pte(mem_addr);
1914 pte_val(*pte) |= _PAGE_NO_CACHE;
1915 flush_tlb_page(init_mm.mmap, mem_addr);
1920 /* ------------------------------------------------------------------------- */
1922 static void mii_display_status(struct net_device *dev)
1924 struct fec_enet_private *fep = netdev_priv(dev);
1925 volatile uint *s = &(fep->phy_status);
1927 if (!fep->link && !fep->old_link) {
1928 /* Link is still down - don't print anything */
1932 printk("%s: status: ", dev->name);
1935 printk("link down");
1939 switch(*s & PHY_STAT_SPMASK) {
1940 case PHY_STAT_100FDX: printk(", 100MBit Full Duplex"); break;
1941 case PHY_STAT_100HDX: printk(", 100MBit Half Duplex"); break;
1942 case PHY_STAT_10FDX: printk(", 10MBit Full Duplex"); break;
1943 case PHY_STAT_10HDX: printk(", 10MBit Half Duplex"); break;
1945 printk(", Unknown speed/duplex");
1948 if (*s & PHY_STAT_ANC)
1949 printk(", auto-negotiation complete");
1952 if (*s & PHY_STAT_FAULT)
1953 printk(", remote fault");
1958 static void mii_display_config(struct work_struct *work)
1960 struct fec_enet_private *fep = container_of(work, struct fec_enet_private, phy_task);
1961 struct net_device *dev = fep->netdev;
1962 uint status = fep->phy_status;
1965 ** When we get here, phy_task is already removed from
1966 ** the workqueue. It is thus safe to allow to reuse it.
1968 fep->mii_phy_task_queued = 0;
1969 printk("%s: config: auto-negotiation ", dev->name);
1971 if (status & PHY_CONF_ANE)
1976 if (status & PHY_CONF_100FDX)
1978 if (status & PHY_CONF_100HDX)
1980 if (status & PHY_CONF_10FDX)
1982 if (status & PHY_CONF_10HDX)
1984 if (!(status & PHY_CONF_SPMASK))
1985 printk(", No speed/duplex selected?");
1987 if (status & PHY_CONF_LOOP)
1988 printk(", loopback enabled");
1992 fep->sequence_done = 1;
1995 static void mii_relink(struct work_struct *work)
1997 struct fec_enet_private *fep = container_of(work, struct fec_enet_private, phy_task);
1998 struct net_device *dev = fep->netdev;
2002 ** When we get here, phy_task is already removed from
2003 ** the workqueue. It is thus safe to allow to reuse it.
2005 fep->mii_phy_task_queued = 0;
2006 fep->link = (fep->phy_status & PHY_STAT_LINK) ? 1 : 0;
2007 mii_display_status(dev);
2008 fep->old_link = fep->link;
2013 & (PHY_STAT_100FDX | PHY_STAT_10FDX))
2015 fec_restart(dev, duplex);
2020 enable_irq(fep->mii_irq);
2025 /* mii_queue_relink is called in interrupt context from mii_link_interrupt */
2026 static void mii_queue_relink(uint mii_reg, struct net_device *dev)
2028 struct fec_enet_private *fep = netdev_priv(dev);
2031 ** We cannot queue phy_task twice in the workqueue. It
2032 ** would cause an endless loop in the workqueue.
2033 ** Fortunately, if the last mii_relink entry has not yet been
2034 ** executed now, it will do the job for the current interrupt,
2035 ** which is just what we want.
2037 if (fep->mii_phy_task_queued)
2040 fep->mii_phy_task_queued = 1;
2041 INIT_WORK(&fep->phy_task, mii_relink);
2042 schedule_work(&fep->phy_task);
2045 /* mii_queue_config is called in interrupt context from fec_enet_mii */
2046 static void mii_queue_config(uint mii_reg, struct net_device *dev)
2048 struct fec_enet_private *fep = netdev_priv(dev);
2050 if (fep->mii_phy_task_queued)
2053 fep->mii_phy_task_queued = 1;
2054 INIT_WORK(&fep->phy_task, mii_display_config);
2055 schedule_work(&fep->phy_task);
2058 phy_cmd_t const phy_cmd_relink[] = {
2059 { mk_mii_read(MII_REG_CR), mii_queue_relink },
2062 phy_cmd_t const phy_cmd_config[] = {
2063 { mk_mii_read(MII_REG_CR), mii_queue_config },
2067 /* Read remainder of PHY ID.
2070 mii_discover_phy3(uint mii_reg, struct net_device *dev)
2072 struct fec_enet_private *fep;
2075 fep = netdev_priv(dev);
2076 fep->phy_id |= (mii_reg & 0xffff);
2077 printk("fec: PHY @ 0x%x, ID 0x%08x", fep->phy_addr, fep->phy_id);
2079 for(i = 0; phy_info[i]; i++) {
2080 if(phy_info[i]->id == (fep->phy_id >> 4))
2085 printk(" -- %s\n", phy_info[i]->name);
2087 printk(" -- unknown PHY!\n");
2089 fep->phy = phy_info[i];
2090 fep->phy_id_done = 1;
2093 /* Scan all of the MII PHY addresses looking for someone to respond
2094 * with a valid ID. This usually happens quickly.
2097 mii_discover_phy(uint mii_reg, struct net_device *dev)
2099 struct fec_enet_private *fep;
2100 volatile fec_t *fecp;
2103 fep = netdev_priv(dev);
2106 if (fep->phy_addr < 32) {
2107 if ((phytype = (mii_reg & 0xffff)) != 0xffff && phytype != 0) {
2109 /* Got first part of ID, now get remainder.
2111 fep->phy_id = phytype << 16;
2112 mii_queue(dev, mk_mii_read(MII_REG_PHYIR2),
2116 mii_queue(dev, mk_mii_read(MII_REG_PHYIR1),
2120 printk("FEC: No PHY device found.\n");
2121 /* Disable external MII interface */
2122 fecp->fec_mii_speed = fep->phy_speed = 0;
2123 fec_disable_phy_intr();
2127 /* This interrupt occurs when the PHY detects a link change.
2129 #ifdef CONFIG_RPXCLASSIC
2131 mii_link_interrupt(void *dev_id)
2134 mii_link_interrupt(int irq, void * dev_id)
2137 struct net_device *dev = dev_id;
2138 struct fec_enet_private *fep = netdev_priv(dev);
2143 disable_irq(fep->mii_irq); /* disable now, enable later */
2146 mii_do_cmd(dev, fep->phy->ack_int);
2147 mii_do_cmd(dev, phy_cmd_relink); /* restart and display status */
2153 fec_enet_open(struct net_device *dev)
2155 struct fec_enet_private *fep = netdev_priv(dev);
2157 /* I should reset the ring buffers here, but I don't yet know
2158 * a simple way to do that.
2160 fec_set_mac_address(dev);
2162 fep->sequence_done = 0;
2166 mii_do_cmd(dev, fep->phy->ack_int);
2167 mii_do_cmd(dev, fep->phy->config);
2168 mii_do_cmd(dev, phy_cmd_config); /* display configuration */
2170 /* Poll until the PHY tells us its configuration
2172 * Request is initiated by mii_do_cmd above, but answer
2173 * comes by interrupt.
2174 * This should take about 25 usec per register at 2.5 MHz,
2175 * and we read approximately 5 registers.
2177 while(!fep->sequence_done)
2180 mii_do_cmd(dev, fep->phy->startup);
2182 /* Set the initial link state to true. A lot of hardware
2183 * based on this device does not implement a PHY interrupt,
2184 * so we are never notified of link change.
2188 fep->link = 1; /* lets just try it and see */
2189 /* no phy, go full duplex, it's most likely a hub chip */
2190 fec_restart(dev, 1);
2193 netif_start_queue(dev);
2195 return 0; /* Success */
2199 fec_enet_close(struct net_device *dev)
2201 struct fec_enet_private *fep = netdev_priv(dev);
2203 /* Don't know what to do yet.
2206 netif_stop_queue(dev);
2212 /* Set or clear the multicast filter for this adaptor.
2213 * Skeleton taken from sunlance driver.
2214 * The CPM Ethernet implementation allows Multicast as well as individual
2215 * MAC address filtering. Some of the drivers check to make sure it is
2216 * a group multicast address, and discard those that are not. I guess I
2217 * will do the same for now, but just remove the test if you want
2218 * individual filtering as well (do the upper net layers want or support
2219 * this kind of feature?).
2222 #define HASH_BITS 6 /* #bits in hash */
2223 #define CRC32_POLY 0xEDB88320
2225 static void set_multicast_list(struct net_device *dev)
2227 struct fec_enet_private *fep;
2229 struct dev_mc_list *dmi;
2230 unsigned int i, j, bit, data, crc;
2233 fep = netdev_priv(dev);
2236 if (dev->flags&IFF_PROMISC) {
2237 ep->fec_r_cntrl |= 0x0008;
2240 ep->fec_r_cntrl &= ~0x0008;
2242 if (dev->flags & IFF_ALLMULTI) {
2243 /* Catch all multicast addresses, so set the
2244 * filter to all 1's.
2246 ep->fec_hash_table_high = 0xffffffff;
2247 ep->fec_hash_table_low = 0xffffffff;
2249 /* Clear filter and add the addresses in hash register.
2251 ep->fec_hash_table_high = 0;
2252 ep->fec_hash_table_low = 0;
2256 for (j = 0; j < dev->mc_count; j++, dmi = dmi->next)
2258 /* Only support group multicast for now.
2260 if (!(dmi->dmi_addr[0] & 1))
2263 /* calculate crc32 value of mac address
2267 for (i = 0; i < dmi->dmi_addrlen; i++)
2269 data = dmi->dmi_addr[i];
2270 for (bit = 0; bit < 8; bit++, data >>= 1)
2273 (((crc ^ data) & 1) ? CRC32_POLY : 0);
2277 /* only upper 6 bits (HASH_BITS) are used
2278 which point to specific bit in he hash registers
2280 hash = (crc >> (32 - HASH_BITS)) & 0x3f;
2283 ep->fec_hash_table_high |= 1 << (hash - 32);
2285 ep->fec_hash_table_low |= 1 << hash;
2291 /* Set a MAC change in hardware.
2294 fec_set_mac_address(struct net_device *dev)
2296 volatile fec_t *fecp;
2298 fecp = ((struct fec_enet_private *)netdev_priv(dev))->hwp;
2300 /* Set station address. */
2301 fecp->fec_addr_low = dev->dev_addr[3] | (dev->dev_addr[2] << 8) |
2302 (dev->dev_addr[1] << 16) | (dev->dev_addr[0] << 24);
2303 fecp->fec_addr_high = (dev->dev_addr[5] << 16) |
2304 (dev->dev_addr[4] << 24);
2308 /* Initialize the FEC Ethernet on 860T (or ColdFire 5272).
2311 * XXX: We need to clean up on failure exits here.
2313 int __init fec_enet_init(struct net_device *dev)
2315 struct fec_enet_private *fep = netdev_priv(dev);
2316 unsigned long mem_addr;
2317 volatile cbd_t *bdp;
2319 volatile fec_t *fecp;
2321 static int index = 0;
2323 /* Only allow us to be probed once. */
2324 if (index >= FEC_MAX_PORTS)
2327 /* Allocate memory for buffer descriptors.
2329 mem_addr = __get_free_page(GFP_KERNEL);
2330 if (mem_addr == 0) {
2331 printk("FEC: allocate descriptor memory failed?\n");
2335 /* Create an Ethernet device instance.
2337 fecp = (volatile fec_t *) fec_hw[index];
2343 /* Whack a reset. We should wait for this.
2345 fecp->fec_ecntrl = 1;
2348 /* Set the Ethernet address. If using multiple Enets on the 8xx,
2349 * this needs some work to get unique addresses.
2351 * This is our default MAC address unless the user changes
2352 * it via eth_mac_addr (our dev->set_mac_addr handler).
2356 cbd_base = (cbd_t *)mem_addr;
2357 /* XXX: missing check for allocation failure */
2359 fec_uncache(mem_addr);
2361 /* Set receive and transmit descriptor base.
2363 fep->rx_bd_base = cbd_base;
2364 fep->tx_bd_base = cbd_base + RX_RING_SIZE;
2366 fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
2367 fep->cur_rx = fep->rx_bd_base;
2369 fep->skb_cur = fep->skb_dirty = 0;
2371 /* Initialize the receive buffer descriptors.
2373 bdp = fep->rx_bd_base;
2374 for (i=0; i<FEC_ENET_RX_PAGES; i++) {
2378 mem_addr = __get_free_page(GFP_KERNEL);
2379 /* XXX: missing check for allocation failure */
2381 fec_uncache(mem_addr);
2383 /* Initialize the BD for every fragment in the page.
2385 for (j=0; j<FEC_ENET_RX_FRPPG; j++) {
2386 bdp->cbd_sc = BD_ENET_RX_EMPTY;
2387 bdp->cbd_bufaddr = __pa(mem_addr);
2388 mem_addr += FEC_ENET_RX_FRSIZE;
2393 /* Set the last buffer to wrap.
2396 bdp->cbd_sc |= BD_SC_WRAP;
2398 /* ...and the same for transmmit.
2400 bdp = fep->tx_bd_base;
2401 for (i=0, j=FEC_ENET_TX_FRPPG; i<TX_RING_SIZE; i++) {
2402 if (j >= FEC_ENET_TX_FRPPG) {
2403 mem_addr = __get_free_page(GFP_KERNEL);
2406 mem_addr += FEC_ENET_TX_FRSIZE;
2409 fep->tx_bounce[i] = (unsigned char *) mem_addr;
2411 /* Initialize the BD for every fragment in the page.
2414 bdp->cbd_bufaddr = 0;
2418 /* Set the last buffer to wrap.
2421 bdp->cbd_sc |= BD_SC_WRAP;
2423 /* Set receive and transmit descriptor base.
2425 fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base));
2426 fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base));
2428 /* Install our interrupt handlers. This varies depending on
2431 fec_request_intrs(dev);
2433 fecp->fec_hash_table_high = 0;
2434 fecp->fec_hash_table_low = 0;
2435 fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
2436 fecp->fec_ecntrl = 2;
2437 fecp->fec_r_des_active = 0;
2439 dev->base_addr = (unsigned long)fecp;
2441 /* The FEC Ethernet specific entries in the device structure. */
2442 dev->open = fec_enet_open;
2443 dev->hard_start_xmit = fec_enet_start_xmit;
2444 dev->tx_timeout = fec_timeout;
2445 dev->watchdog_timeo = TX_TIMEOUT;
2446 dev->stop = fec_enet_close;
2447 dev->set_multicast_list = set_multicast_list;
2449 for (i=0; i<NMII-1; i++)
2450 mii_cmds[i].mii_next = &mii_cmds[i+1];
2451 mii_free = mii_cmds;
2453 /* setup MII interface */
2454 fec_set_mii(dev, fep);
2456 /* Clear and enable interrupts */
2457 fecp->fec_ievent = 0xffc00000;
2458 fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB |
2459 FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII);
2461 /* Queue up command to detect the PHY and initialize the
2462 * remainder of the interface.
2464 fep->phy_id_done = 0;
2466 mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), mii_discover_phy);
2472 /* This function is called to start or restart the FEC during a link
2473 * change. This only happens when switching between half and full
2477 fec_restart(struct net_device *dev, int duplex)
2479 struct fec_enet_private *fep;
2480 volatile cbd_t *bdp;
2481 volatile fec_t *fecp;
2484 fep = netdev_priv(dev);
2487 /* Whack a reset. We should wait for this.
2489 fecp->fec_ecntrl = 1;
2492 /* Clear any outstanding interrupt.
2494 fecp->fec_ievent = 0xffc00000;
2495 fec_enable_phy_intr();
2497 /* Set station address.
2499 fec_set_mac_address(dev);
2501 /* Reset all multicast.
2503 fecp->fec_hash_table_high = 0;
2504 fecp->fec_hash_table_low = 0;
2506 /* Set maximum receive buffer size.
2508 fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
2510 fec_localhw_setup();
2512 /* Set receive and transmit descriptor base.
2514 fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base));
2515 fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base));
2517 fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
2518 fep->cur_rx = fep->rx_bd_base;
2520 /* Reset SKB transmit buffers.
2522 fep->skb_cur = fep->skb_dirty = 0;
2523 for (i=0; i<=TX_RING_MOD_MASK; i++) {
2524 if (fep->tx_skbuff[i] != NULL) {
2525 dev_kfree_skb_any(fep->tx_skbuff[i]);
2526 fep->tx_skbuff[i] = NULL;
2530 /* Initialize the receive buffer descriptors.
2532 bdp = fep->rx_bd_base;
2533 for (i=0; i<RX_RING_SIZE; i++) {
2535 /* Initialize the BD for every fragment in the page.
2537 bdp->cbd_sc = BD_ENET_RX_EMPTY;
2541 /* Set the last buffer to wrap.
2544 bdp->cbd_sc |= BD_SC_WRAP;
2546 /* ...and the same for transmmit.
2548 bdp = fep->tx_bd_base;
2549 for (i=0; i<TX_RING_SIZE; i++) {
2551 /* Initialize the BD for every fragment in the page.
2554 bdp->cbd_bufaddr = 0;
2558 /* Set the last buffer to wrap.
2561 bdp->cbd_sc |= BD_SC_WRAP;
2566 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04;/* MII enable */
2567 fecp->fec_x_cntrl = 0x04; /* FD enable */
2569 /* MII enable|No Rcv on Xmit */
2570 fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x06;
2571 fecp->fec_x_cntrl = 0x00;
2573 fep->full_duplex = duplex;
2577 fecp->fec_mii_speed = fep->phy_speed;
2579 /* And last, enable the transmit and receive processing.
2581 fecp->fec_ecntrl = 2;
2582 fecp->fec_r_des_active = 0;
2584 /* Enable interrupts we wish to service.
2586 fecp->fec_imask = (FEC_ENET_TXF | FEC_ENET_TXB |
2587 FEC_ENET_RXF | FEC_ENET_RXB | FEC_ENET_MII);
2591 fec_stop(struct net_device *dev)
2593 volatile fec_t *fecp;
2594 struct fec_enet_private *fep;
2596 fep = netdev_priv(dev);
2600 ** We cannot expect a graceful transmit stop without link !!!
2604 fecp->fec_x_cntrl = 0x01; /* Graceful transmit stop */
2606 if (!(fecp->fec_ievent & FEC_ENET_GRA))
2607 printk("fec_stop : Graceful transmit stop did not complete !\n");
2610 /* Whack a reset. We should wait for this.
2612 fecp->fec_ecntrl = 1;
2615 /* Clear outstanding MII command interrupts.
2617 fecp->fec_ievent = FEC_ENET_MII;
2618 fec_enable_phy_intr();
2620 fecp->fec_imask = FEC_ENET_MII;
2621 fecp->fec_mii_speed = fep->phy_speed;
2624 static int __init fec_enet_module_init(void)
2626 struct net_device *dev;
2628 DECLARE_MAC_BUF(mac);
2630 printk("FEC ENET Version 0.2\n");
2632 for (i = 0; (i < FEC_MAX_PORTS); i++) {
2633 dev = alloc_etherdev(sizeof(struct fec_enet_private));
2636 err = fec_enet_init(dev);
2641 if (register_netdev(dev) != 0) {
2642 /* XXX: missing cleanup here */
2647 printk("%s: ethernet %s\n",
2648 dev->name, print_mac(mac, dev->dev_addr));
2653 module_init(fec_enet_module_init);
2655 MODULE_LICENSE("GPL");