3 * Ingo Assmus <ingo.assmus@keymile.com>
5 * based on - Driver for MV64360X ethernet ports
6 * Copyright (C) 2002 rabeeh@galileo.co.il
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 * mv_eth.c - header file for the polled mode GT ethernet driver
36 /* enable Debug outputs */
47 #undef MV64360_CHECKSUM_OFFLOAD
48 /*************************************************************************
49 **************************************************************************
50 **************************************************************************
51 * The first part is the high level driver of the gigE ethernet ports. *
52 **************************************************************************
53 **************************************************************************
54 *************************************************************************/
56 /* Definition for configuring driver */
57 /* #define UPDATE_STATS_BY_SOFTWARE */
58 #undef MV64360_RX_QUEUE_FILL_ON_TASK
62 #define MAGIC_ETH_RUNNING 8031971
63 #define MV64360_INTERNAL_SRAM_SIZE _256K
64 #define EXTRA_BYTES 32
65 #define WRAP ETH_HLEN + 2 + 4 + 16
66 #define BUFFER_MTU dev->mtu + WRAP
67 #define INT_CAUSE_UNMASK_ALL 0x0007ffff
68 #define INT_CAUSE_UNMASK_ALL_EXT 0x0011ffff
69 #ifdef MV64360_RX_FILL_ON_TASK
70 #define INT_CAUSE_MASK_ALL 0x00000000
71 #define INT_CAUSE_CHECK_BITS INT_CAUSE_UNMASK_ALL
72 #define INT_CAUSE_CHECK_BITS_EXT INT_CAUSE_UNMASK_ALL_EXT
75 /* Read/Write to/from MV64360 internal registers */
76 #define MV_REG_READ(offset) my_le32_to_cpu(* (volatile unsigned int *) (INTERNAL_REG_BASE_ADDR + offset))
77 #define MV_REG_WRITE(offset,data) *(volatile unsigned int *) (INTERNAL_REG_BASE_ADDR + offset) = my_cpu_to_le32 (data)
78 #define MV_SET_REG_BITS(regOffset,bits) ((*((volatile unsigned int*)((INTERNAL_REG_BASE_ADDR) + (regOffset)))) |= ((unsigned int)my_cpu_to_le32(bits)))
79 #define MV_RESET_REG_BITS(regOffset,bits) ((*((volatile unsigned int*)((INTERNAL_REG_BASE_ADDR) + (regOffset)))) &= ~((unsigned int)my_cpu_to_le32(bits)))
81 /* Static function declarations */
82 static int mv64360_eth_real_open (struct eth_device *eth);
83 static int mv64360_eth_real_stop (struct eth_device *eth);
84 static struct net_device_stats *mv64360_eth_get_stats (struct eth_device
86 static void eth_port_init_mac_tables (ETH_PORT eth_port_num);
87 static void mv64360_eth_update_stat (struct eth_device *dev);
88 bool db64360_eth_start (struct eth_device *eth);
89 unsigned int eth_read_mib_counter (ETH_PORT eth_port_num,
90 unsigned int mib_offset);
91 int mv64360_eth_receive (struct eth_device *dev);
93 int mv64360_eth_xmit (struct eth_device *, volatile void *packet, int length);
95 #ifndef UPDATE_STATS_BY_SOFTWARE
96 static void mv64360_eth_print_stat (struct eth_device *dev);
99 extern unsigned int INTERNAL_REG_BASE_ADDR;
101 /*************************************************
102 *Helper functions - used inside the driver only *
103 *************************************************/
105 void print_globals (struct eth_device *dev)
107 printf ("Ethernet PRINT_Globals-Debug function\n");
108 printf ("Base Address for ETH_PORT_INFO: %08x\n",
109 (unsigned int) dev->priv);
110 printf ("Base Address for mv64360_eth_priv: %08x\n",
111 (unsigned int) &(((ETH_PORT_INFO *) dev->priv)->
114 printf ("GT Internal Base Address: %08x\n",
115 INTERNAL_REG_BASE_ADDR);
116 printf ("Base Address for TX-DESCs: %08x Number of allocated Buffers %d\n", (unsigned int) ((ETH_PORT_INFO *) dev->priv)->p_tx_desc_area_base[0], MV64360_TX_QUEUE_SIZE);
117 printf ("Base Address for RX-DESCs: %08x Number of allocated Buffers %d\n", (unsigned int) ((ETH_PORT_INFO *) dev->priv)->p_rx_desc_area_base[0], MV64360_RX_QUEUE_SIZE);
118 printf ("Base Address for RX-Buffer: %08x allocated Bytes %d\n",
119 (unsigned int) ((ETH_PORT_INFO *) dev->priv)->
121 (MV64360_RX_QUEUE_SIZE * MV64360_RX_BUFFER_SIZE) + 32);
122 printf ("Base Address for TX-Buffer: %08x allocated Bytes %d\n",
123 (unsigned int) ((ETH_PORT_INFO *) dev->priv)->
125 (MV64360_TX_QUEUE_SIZE * MV64360_TX_BUFFER_SIZE) + 32);
129 #define my_cpu_to_le32(x) my_le32_to_cpu((x))
131 unsigned long my_le32_to_cpu (unsigned long x)
133 return (((x & 0x000000ffU) << 24) |
134 ((x & 0x0000ff00U) << 8) |
135 ((x & 0x00ff0000U) >> 8) | ((x & 0xff000000U) >> 24));
139 /**********************************************************************
140 * mv64360_eth_print_phy_status
142 * Prints gigabit ethenret phy status
144 * Input : pointer to ethernet interface network device structure
146 **********************************************************************/
148 static void mv64360_eth_print_phy_status (struct eth_device *dev)
150 struct mv64360_eth_priv *port_private;
151 unsigned int port_num;
152 ETH_PORT_INFO *ethernet_private = (ETH_PORT_INFO *) dev->priv;
153 unsigned int port_status, phy_reg_data;
156 (struct mv64360_eth_priv *) ethernet_private->port_private;
157 port_num = port_private->port_num;
159 /* Check Link status on phy */
160 eth_port_read_smi_reg (port_num, 1, &phy_reg_data);
161 if (!(phy_reg_data & 0x20)) {
162 printf ("Ethernet port changed link status to DOWN\n");
165 MV_REG_READ (MV64360_ETH_PORT_STATUS_REG (port_num));
166 printf ("Ethernet status port %d: Link up", port_num);
168 (port_status & BIT2) ? "Full Duplex" : "Half Duplex");
169 if (port_status & BIT4)
170 printf (", Speed 1 Gbps");
173 (port_status & BIT5) ? "Speed 100 Mbps" :
179 /**********************************************************************
180 * u-boot entry functions for mv64360_eth
182 **********************************************************************/
183 int db64360_eth_probe (struct eth_device *dev)
185 return ((int) db64360_eth_start (dev));
188 int db64360_eth_poll (struct eth_device *dev)
190 return mv64360_eth_receive (dev);
193 int db64360_eth_transmit (struct eth_device *dev, volatile void *packet,
196 mv64360_eth_xmit (dev, packet, length);
200 void db64360_eth_disable (struct eth_device *dev)
202 mv64360_eth_stop (dev);
206 void mv6436x_eth_initialize (bd_t * bis)
208 struct eth_device *dev;
209 ETH_PORT_INFO *ethernet_private;
210 struct mv64360_eth_priv *port_private;
212 char *s, *e, buf[64];
214 for (devnum = 0; devnum < MV_ETH_DEVS; devnum++) {
215 dev = calloc (sizeof (*dev), 1);
217 printf ("%s: mv_enet%d allocation failure, %s\n",
218 __FUNCTION__, devnum, "eth_device structure");
222 /* must be less than sizeof(dev->name) */
223 sprintf (dev->name, "mv_enet%d", devnum);
226 printf ("Initializing %s\n", dev->name);
229 /* Extract the MAC address from the environment */
243 default: /* this should never happen */
244 printf ("%s: Invalid device number %d\n",
245 __FUNCTION__, devnum);
249 temp = getenv_f(s, buf, sizeof (buf));
250 s = (temp > 0) ? buf : NULL;
253 printf ("Setting MAC %d to %s\n", devnum, s);
255 for (x = 0; x < 6; ++x) {
256 dev->enetaddr[x] = s ? simple_strtoul (s, &e, 16) : 0;
258 s = (*e) ? e + 1 : e;
260 /* ronen - set the MAC addr in the HW */
261 eth_port_uc_addr_set (devnum, dev->enetaddr, 0);
263 dev->init = (void *) db64360_eth_probe;
264 dev->halt = (void *) ethernet_phy_reset;
265 dev->send = (void *) db64360_eth_transmit;
266 dev->recv = (void *) db64360_eth_poll;
268 ethernet_private = calloc (sizeof (*ethernet_private), 1);
269 dev->priv = (void *) ethernet_private;
271 if (!ethernet_private) {
272 printf ("%s: %s allocation failure, %s\n",
273 __FUNCTION__, dev->name,
274 "Private Device Structure");
278 /* start with an zeroed ETH_PORT_INFO */
279 memset (ethernet_private, 0, sizeof (ETH_PORT_INFO));
280 memcpy (ethernet_private->port_mac_addr, dev->enetaddr, 6);
282 /* set pointer to memory for stats data structure etc... */
283 port_private = calloc (sizeof (*ethernet_private), 1);
284 ethernet_private->port_private = (void *)port_private;
286 printf ("%s: %s allocation failure, %s\n",
287 __FUNCTION__, dev->name,
288 "Port Private Device Structure");
290 free (ethernet_private);
295 port_private->stats =
296 calloc (sizeof (struct net_device_stats), 1);
297 if (!port_private->stats) {
298 printf ("%s: %s allocation failure, %s\n",
299 __FUNCTION__, dev->name,
300 "Net stat Structure");
303 free (ethernet_private);
307 memset (ethernet_private->port_private, 0,
308 sizeof (struct mv64360_eth_priv));
311 ethernet_private->port_num = ETH_0;
314 ethernet_private->port_num = ETH_1;
317 ethernet_private->port_num = ETH_2;
320 printf ("Invalid device number %d\n", devnum);
324 port_private->port_num = devnum;
326 * Read MIB counter on the GT in order to reset them,
327 * then zero all the stats fields in memory
329 mv64360_eth_update_stat (dev);
330 memset (port_private->stats, 0,
331 sizeof (struct net_device_stats));
332 /* Extract the MAC address from the environment */
346 default: /* this should never happen */
347 printf ("%s: Invalid device number %d\n",
348 __FUNCTION__, devnum);
352 temp = getenv_f(s, buf, sizeof (buf));
353 s = (temp > 0) ? buf : NULL;
356 printf ("Setting MAC %d to %s\n", devnum, s);
358 for (x = 0; x < 6; ++x) {
359 dev->enetaddr[x] = s ? simple_strtoul (s, &e, 16) : 0;
361 s = (*e) ? e + 1 : e;
364 DP (printf ("Allocating descriptor and buffer rings\n"));
366 ethernet_private->p_rx_desc_area_base[0] =
367 (ETH_RX_DESC *) memalign (16,
368 RX_DESC_ALIGNED_SIZE *
369 MV64360_RX_QUEUE_SIZE + 1);
370 ethernet_private->p_tx_desc_area_base[0] =
371 (ETH_TX_DESC *) memalign (16,
372 TX_DESC_ALIGNED_SIZE *
373 MV64360_TX_QUEUE_SIZE + 1);
375 ethernet_private->p_rx_buffer_base[0] =
376 (char *) memalign (16,
377 MV64360_RX_QUEUE_SIZE *
378 MV64360_TX_BUFFER_SIZE + 1);
379 ethernet_private->p_tx_buffer_base[0] =
380 (char *) memalign (16,
381 MV64360_RX_QUEUE_SIZE *
382 MV64360_TX_BUFFER_SIZE + 1);
385 /* DEBUG OUTPUT prints adresses of globals */
391 DP (printf ("%s: exit\n", __FUNCTION__));
395 /**********************************************************************
398 * This function is called when openning the network device. The function
399 * should initialize all the hardware, initialize cyclic Rx/Tx
400 * descriptors chain and buffers and allocate an IRQ to the network
403 * Input : a pointer to the network device structure
404 * / / ronen - changed the output to match net/eth.c needs
405 * Output : nonzero of success , zero if fails.
407 **********************************************************************/
409 int mv64360_eth_open (struct eth_device *dev)
411 return (mv64360_eth_real_open (dev));
414 /* Helper function for mv64360_eth_open */
415 static int mv64360_eth_real_open (struct eth_device *dev)
419 ETH_PORT_INFO *ethernet_private;
420 struct mv64360_eth_priv *port_private;
421 unsigned int port_num;
424 ethernet_private = (ETH_PORT_INFO *) dev->priv;
425 /* ronen - when we update the MAC env params we only update dev->enetaddr
426 see ./net/eth.c eth_set_enetaddr() */
427 memcpy (ethernet_private->port_mac_addr, dev->enetaddr, 6);
430 (struct mv64360_eth_priv *) ethernet_private->port_private;
431 port_num = port_private->port_num;
434 MV_REG_WRITE (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG (port_num),
437 /* Clear the ethernet port interrupts */
438 MV_REG_WRITE (MV64360_ETH_INTERRUPT_CAUSE_REG (port_num), 0);
439 MV_REG_WRITE (MV64360_ETH_INTERRUPT_CAUSE_EXTEND_REG (port_num), 0);
441 /* Unmask RX buffer and TX end interrupt */
442 MV_REG_WRITE (MV64360_ETH_INTERRUPT_MASK_REG (port_num),
443 INT_CAUSE_UNMASK_ALL);
445 /* Unmask phy and link status changes interrupts */
446 MV_REG_WRITE (MV64360_ETH_INTERRUPT_EXTEND_MASK_REG (port_num),
447 INT_CAUSE_UNMASK_ALL_EXT);
449 /* Set phy address of the port */
450 ethernet_private->port_phy_addr = 0x8 + port_num;
452 /* Activate the DMA channels etc */
453 eth_port_init (ethernet_private);
456 /* "Allocate" setup TX rings */
458 for (queue = 0; queue < MV64360_TX_QUEUE_NUM; queue++) {
461 port_private->tx_ring_size[queue] = MV64360_TX_QUEUE_SIZE;
462 size = (port_private->tx_ring_size[queue] * TX_DESC_ALIGNED_SIZE); /*size = no of DESCs times DESC-size */
463 ethernet_private->tx_desc_area_size[queue] = size;
465 /* first clear desc area completely */
466 memset ((void *) ethernet_private->p_tx_desc_area_base[queue],
467 0, ethernet_private->tx_desc_area_size[queue]);
469 /* initialize tx desc ring with low level driver */
470 if (ether_init_tx_desc_ring
471 (ethernet_private, ETH_Q0,
472 port_private->tx_ring_size[queue],
473 MV64360_TX_BUFFER_SIZE /* Each Buffer is 1600 Byte */ ,
474 (unsigned int) ethernet_private->
475 p_tx_desc_area_base[queue],
476 (unsigned int) ethernet_private->
477 p_tx_buffer_base[queue]) == false)
478 printf ("### Error initializing TX Ring\n");
481 /* "Allocate" setup RX rings */
482 for (queue = 0; queue < MV64360_RX_QUEUE_NUM; queue++) {
485 /* Meantime RX Ring are fixed - but must be configurable by user */
486 port_private->rx_ring_size[queue] = MV64360_RX_QUEUE_SIZE;
487 size = (port_private->rx_ring_size[queue] *
488 RX_DESC_ALIGNED_SIZE);
489 ethernet_private->rx_desc_area_size[queue] = size;
491 /* first clear desc area completely */
492 memset ((void *) ethernet_private->p_rx_desc_area_base[queue],
493 0, ethernet_private->rx_desc_area_size[queue]);
494 if ((ether_init_rx_desc_ring
495 (ethernet_private, ETH_Q0,
496 port_private->rx_ring_size[queue],
497 MV64360_RX_BUFFER_SIZE /* Each Buffer is 1600 Byte */ ,
498 (unsigned int) ethernet_private->
499 p_rx_desc_area_base[queue],
500 (unsigned int) ethernet_private->
501 p_rx_buffer_base[queue])) == false)
502 printf ("### Error initializing RX Ring\n");
505 eth_port_start (ethernet_private);
507 /* Set maximum receive buffer to 9700 bytes */
508 MV_REG_WRITE (MV64360_ETH_PORT_SERIAL_CONTROL_REG (port_num),
511 (MV64360_ETH_PORT_SERIAL_CONTROL_REG (port_num))
515 * Set ethernet MTU for leaky bucket mechanism to 0 - this will
516 * disable the leaky bucket mechanism .
519 MV_REG_WRITE (MV64360_ETH_MAXIMUM_TRANSMIT_UNIT (port_num), 0);
520 MV_REG_READ (MV64360_ETH_PORT_STATUS_REG (port_num));
522 /* Check Link status on phy */
523 eth_port_read_smi_reg (port_num, 1, &phy_reg_data);
524 if (!(phy_reg_data & 0x20)) {
526 if ((ethernet_phy_reset (port_num)) != true) {
527 printf ("$$ Warnning: No link on port %d \n",
531 eth_port_read_smi_reg (port_num, 1, &phy_reg_data);
532 if (!(phy_reg_data & 0x20)) {
533 printf ("### Error: Phy is not active\n");
538 mv64360_eth_print_phy_status (dev);
540 port_private->eth_running = MAGIC_ETH_RUNNING;
545 static int mv64360_eth_free_tx_rings (struct eth_device *dev)
548 ETH_PORT_INFO *ethernet_private;
549 struct mv64360_eth_priv *port_private;
550 unsigned int port_num;
551 volatile ETH_TX_DESC *p_tx_curr_desc;
553 ethernet_private = (ETH_PORT_INFO *) dev->priv;
555 (struct mv64360_eth_priv *) ethernet_private->port_private;
556 port_num = port_private->port_num;
559 MV_REG_WRITE (MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG (port_num),
563 DP (printf ("Clearing previously allocated TX queues... "));
564 for (queue = 0; queue < MV64360_TX_QUEUE_NUM; queue++) {
565 /* Free on TX rings */
566 for (p_tx_curr_desc =
567 ethernet_private->p_tx_desc_area_base[queue];
568 ((unsigned int) p_tx_curr_desc <= (unsigned int)
569 ethernet_private->p_tx_desc_area_base[queue] +
570 ethernet_private->tx_desc_area_size[queue]);
572 (ETH_TX_DESC *) ((unsigned int) p_tx_curr_desc +
573 TX_DESC_ALIGNED_SIZE)) {
574 /* this is inside for loop */
575 if (p_tx_curr_desc->return_info != 0) {
576 p_tx_curr_desc->return_info = 0;
577 DP (printf ("freed\n"));
580 DP (printf ("Done\n"));
585 static int mv64360_eth_free_rx_rings (struct eth_device *dev)
588 ETH_PORT_INFO *ethernet_private;
589 struct mv64360_eth_priv *port_private;
590 unsigned int port_num;
591 volatile ETH_RX_DESC *p_rx_curr_desc;
593 ethernet_private = (ETH_PORT_INFO *) dev->priv;
595 (struct mv64360_eth_priv *) ethernet_private->port_private;
596 port_num = port_private->port_num;
600 MV_REG_WRITE (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG (port_num),
604 DP (printf ("Clearing previously allocated RX queues... "));
605 for (queue = 0; queue < MV64360_RX_QUEUE_NUM; queue++) {
606 /* Free preallocated skb's on RX rings */
607 for (p_rx_curr_desc =
608 ethernet_private->p_rx_desc_area_base[queue];
609 (((unsigned int) p_rx_curr_desc <
610 ((unsigned int) ethernet_private->
611 p_rx_desc_area_base[queue] +
612 ethernet_private->rx_desc_area_size[queue])));
614 (ETH_RX_DESC *) ((unsigned int) p_rx_curr_desc +
615 RX_DESC_ALIGNED_SIZE)) {
616 if (p_rx_curr_desc->return_info != 0) {
617 p_rx_curr_desc->return_info = 0;
618 DP (printf ("freed\n"));
621 DP (printf ("Done\n"));
626 /**********************************************************************
629 * This function is used when closing the network device.
630 * It updates the hardware,
631 * release all memory that holds buffers and descriptors and release the IRQ.
632 * Input : a pointer to the device structure
633 * Output : zero if success , nonzero if fails
634 *********************************************************************/
636 int mv64360_eth_stop (struct eth_device *dev)
638 /* Disable all gigE address decoder */
639 MV_REG_WRITE (MV64360_ETH_BASE_ADDR_ENABLE_REG, 0x3f);
640 DP (printf ("%s Ethernet stop called ... \n", __FUNCTION__));
641 mv64360_eth_real_stop (dev);
646 /* Helper function for mv64360_eth_stop */
648 static int mv64360_eth_real_stop (struct eth_device *dev)
650 ETH_PORT_INFO *ethernet_private;
651 struct mv64360_eth_priv *port_private;
652 unsigned int port_num;
654 ethernet_private = (ETH_PORT_INFO *) dev->priv;
656 (struct mv64360_eth_priv *) ethernet_private->port_private;
657 port_num = port_private->port_num;
660 mv64360_eth_free_tx_rings (dev);
661 mv64360_eth_free_rx_rings (dev);
663 eth_port_reset (ethernet_private->port_num);
664 /* Disable ethernet port interrupts */
665 MV_REG_WRITE (MV64360_ETH_INTERRUPT_CAUSE_REG (port_num), 0);
666 MV_REG_WRITE (MV64360_ETH_INTERRUPT_CAUSE_EXTEND_REG (port_num), 0);
667 /* Mask RX buffer and TX end interrupt */
668 MV_REG_WRITE (MV64360_ETH_INTERRUPT_MASK_REG (port_num), 0);
669 /* Mask phy and link status changes interrupts */
670 MV_REG_WRITE (MV64360_ETH_INTERRUPT_EXTEND_MASK_REG (port_num), 0);
671 MV_RESET_REG_BITS (MV64360_CPU_INTERRUPT0_MASK_HIGH,
673 /* Print Network statistics */
674 #ifndef UPDATE_STATS_BY_SOFTWARE
676 * Print statistics (only if ethernet is running),
677 * then zero all the stats fields in memory
679 if (port_private->eth_running == MAGIC_ETH_RUNNING) {
680 port_private->eth_running = 0;
681 mv64360_eth_print_stat (dev);
683 memset (port_private->stats, 0, sizeof (struct net_device_stats));
685 DP (printf ("\nEthernet stopped ... \n"));
690 /**********************************************************************
691 * mv64360_eth_start_xmit
693 * This function is queues a packet in the Tx descriptor for
696 * Input : skb - a pointer to socket buffer
697 * dev - a pointer to the required port
699 * Output : zero upon success
700 **********************************************************************/
702 int mv64360_eth_xmit (struct eth_device *dev, volatile void *dataPtr,
705 ETH_PORT_INFO *ethernet_private;
706 struct mv64360_eth_priv *port_private;
708 ETH_FUNC_RET_STATUS status;
709 struct net_device_stats *stats;
710 ETH_FUNC_RET_STATUS release_result;
712 ethernet_private = (ETH_PORT_INFO *) dev->priv;
714 (struct mv64360_eth_priv *) ethernet_private->port_private;
716 stats = port_private->stats;
718 /* Update packet info data structure */
719 pkt_info.cmd_sts = ETH_TX_FIRST_DESC | ETH_TX_LAST_DESC; /* DMA owned, first last */
720 pkt_info.byte_cnt = dataSize;
721 pkt_info.buf_ptr = (unsigned int) dataPtr;
722 pkt_info.return_info = 0;
724 status = eth_port_send (ethernet_private, ETH_Q0, &pkt_info);
725 if ((status == ETH_ERROR) || (status == ETH_QUEUE_FULL)) {
726 printf ("Error on transmitting packet ..");
727 if (status == ETH_QUEUE_FULL)
728 printf ("ETH Queue is full. \n");
729 if (status == ETH_QUEUE_LAST_RESOURCE)
730 printf ("ETH Queue: using last available resource. \n");
734 /* Update statistics and start of transmittion time */
735 stats->tx_bytes += dataSize;
738 /* Check if packet(s) is(are) transmitted correctly (release everything) */
741 eth_tx_return_desc (ethernet_private, ETH_Q0,
743 switch (release_result) {
745 DP (printf ("descriptor released\n"));
746 if (pkt_info.cmd_sts & BIT0) {
747 printf ("Error in TX\n");
753 DP (printf ("transmission still in process\n"));
757 printf ("routine can not access Tx desc ring\n");
761 DP (printf ("the routine has nothing to release\n"));
763 default: /* should not happen */
766 } while (release_result == ETH_OK);
769 return 0; /* success */
771 return 1; /* Failed - higher layers will free the skb */
774 /**********************************************************************
775 * mv64360_eth_receive
777 * This function is forward packets that are received from the port's
778 * queues toward kernel core or FastRoute them to another interface.
780 * Input : dev - a pointer to the required interface
781 * max - maximum number to receive (0 means unlimted)
783 * Output : number of served packets
784 **********************************************************************/
786 int mv64360_eth_receive (struct eth_device *dev)
788 ETH_PORT_INFO *ethernet_private;
789 struct mv64360_eth_priv *port_private;
791 struct net_device_stats *stats;
793 ethernet_private = (ETH_PORT_INFO *) dev->priv;
795 (struct mv64360_eth_priv *) ethernet_private->port_private;
796 stats = port_private->stats;
798 while ((eth_port_receive (ethernet_private, ETH_Q0, &pkt_info) ==
802 if (pkt_info.byte_cnt != 0) {
803 printf ("%s: Received %d byte Packet @ 0x%x\n",
804 __FUNCTION__, pkt_info.byte_cnt,
808 /* Update statistics. Note byte count includes 4 byte CRC count */
810 stats->rx_bytes += pkt_info.byte_cnt;
813 * In case received a packet without first / last bits on OR the error
814 * summary bit is on, the packets needs to be dropeed.
817 cmd_sts & (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) !=
818 (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC))
819 || (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)) {
822 printf ("Received packet spread on multiple descriptors\n");
824 /* Is this caused by an error ? */
825 if (pkt_info.cmd_sts & ETH_ERROR_SUMMARY) {
829 /* free these descriptors again without forwarding them to the higher layers */
830 pkt_info.buf_ptr &= ~0x7; /* realign buffer again */
831 pkt_info.byte_cnt = 0x0000; /* Reset Byte count */
833 if (eth_rx_return_buff
834 (ethernet_private, ETH_Q0, &pkt_info) != ETH_OK) {
835 printf ("Error while returning the RX Desc to Ring\n");
837 DP (printf ("RX Desc returned to Ring\n"));
839 /* /free these descriptors again */
842 /* !!! call higher layer processing */
844 printf ("\nNow send it to upper layer protocols (NetReceive) ...\n");
846 /* let the upper layer handle the packet */
847 NetReceive ((uchar *) pkt_info.buf_ptr,
848 (int) pkt_info.byte_cnt);
850 /* **************************************************************** */
851 /* free descriptor */
852 pkt_info.buf_ptr &= ~0x7; /* realign buffer again */
853 pkt_info.byte_cnt = 0x0000; /* Reset Byte count */
855 ("RX: pkt_info.buf_ptr = %x\n",
857 if (eth_rx_return_buff
858 (ethernet_private, ETH_Q0, &pkt_info) != ETH_OK) {
859 printf ("Error while returning the RX Desc to Ring\n");
861 DP (printf ("RX Desc returned to Ring\n"));
864 /* **************************************************************** */
868 mv64360_eth_get_stats (dev); /* update statistics */
872 /**********************************************************************
873 * mv64360_eth_get_stats
875 * Returns a pointer to the interface statistics.
877 * Input : dev - a pointer to the required interface
879 * Output : a pointer to the interface's statistics
880 **********************************************************************/
882 static struct net_device_stats *mv64360_eth_get_stats (struct eth_device *dev)
884 ETH_PORT_INFO *ethernet_private;
885 struct mv64360_eth_priv *port_private;
887 ethernet_private = (ETH_PORT_INFO *) dev->priv;
889 (struct mv64360_eth_priv *) ethernet_private->port_private;
891 mv64360_eth_update_stat (dev);
893 return port_private->stats;
897 /**********************************************************************
898 * mv64360_eth_update_stat
900 * Update the statistics structure in the private data structure
902 * Input : pointer to ethernet interface network device structure
904 **********************************************************************/
906 static void mv64360_eth_update_stat (struct eth_device *dev)
908 ETH_PORT_INFO *ethernet_private;
909 struct mv64360_eth_priv *port_private;
910 struct net_device_stats *stats;
912 ethernet_private = (ETH_PORT_INFO *) dev->priv;
914 (struct mv64360_eth_priv *) ethernet_private->port_private;
915 stats = port_private->stats;
917 /* These are false updates */
918 stats->rx_packets += (unsigned long)
919 eth_read_mib_counter (ethernet_private->port_num,
920 ETH_MIB_GOOD_FRAMES_RECEIVED);
921 stats->tx_packets += (unsigned long)
922 eth_read_mib_counter (ethernet_private->port_num,
923 ETH_MIB_GOOD_FRAMES_SENT);
924 stats->rx_bytes += (unsigned long)
925 eth_read_mib_counter (ethernet_private->port_num,
926 ETH_MIB_GOOD_OCTETS_RECEIVED_LOW);
928 * Ideally this should be as follows -
930 * stats->rx_bytes += stats->rx_bytes +
931 * ((unsigned long) ethReadMibCounter (ethernet_private->port_num ,
932 * ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32);
934 * But the unsigned long in PowerPC and MIPS are 32bit. So the next read
935 * is just a dummy read for proper work of the GigE port
937 eth_read_mib_counter (ethernet_private->port_num,
938 ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH);
939 stats->tx_bytes += (unsigned long)
940 eth_read_mib_counter (ethernet_private->port_num,
941 ETH_MIB_GOOD_OCTETS_SENT_LOW);
942 eth_read_mib_counter (ethernet_private->port_num,
943 ETH_MIB_GOOD_OCTETS_SENT_HIGH);
944 stats->rx_errors += (unsigned long)
945 eth_read_mib_counter (ethernet_private->port_num,
946 ETH_MIB_MAC_RECEIVE_ERROR);
948 /* Rx dropped is for received packet with CRC error */
950 (unsigned long) eth_read_mib_counter (ethernet_private->
952 ETH_MIB_BAD_CRC_EVENT);
953 stats->multicast += (unsigned long)
954 eth_read_mib_counter (ethernet_private->port_num,
955 ETH_MIB_MULTICAST_FRAMES_RECEIVED);
957 (unsigned long) eth_read_mib_counter (ethernet_private->
960 (unsigned long) eth_read_mib_counter (ethernet_private->
962 ETH_MIB_LATE_COLLISION);
963 /* detailed rx errors */
964 stats->rx_length_errors +=
965 (unsigned long) eth_read_mib_counter (ethernet_private->
967 ETH_MIB_UNDERSIZE_RECEIVED)
969 (unsigned long) eth_read_mib_counter (ethernet_private->
971 ETH_MIB_OVERSIZE_RECEIVED);
972 /* detailed tx errors */
975 #ifndef UPDATE_STATS_BY_SOFTWARE
976 /**********************************************************************
977 * mv64360_eth_print_stat
979 * Update the statistics structure in the private data structure
981 * Input : pointer to ethernet interface network device structure
983 **********************************************************************/
985 static void mv64360_eth_print_stat (struct eth_device *dev)
987 ETH_PORT_INFO *ethernet_private;
988 struct mv64360_eth_priv *port_private;
989 struct net_device_stats *stats;
991 ethernet_private = (ETH_PORT_INFO *) dev->priv;
993 (struct mv64360_eth_priv *) ethernet_private->port_private;
994 stats = port_private->stats;
996 /* These are false updates */
997 printf ("\n### Network statistics: ###\n");
998 printf ("--------------------------\n");
999 printf (" Packets received: %ld\n", stats->rx_packets);
1000 printf (" Packets send: %ld\n", stats->tx_packets);
1001 printf (" Received bytes: %ld\n", stats->rx_bytes);
1002 printf (" Send bytes: %ld\n", stats->tx_bytes);
1003 if (stats->rx_errors != 0)
1004 printf (" Rx Errors: %ld\n",
1006 if (stats->rx_dropped != 0)
1007 printf (" Rx dropped (CRC Errors): %ld\n",
1009 if (stats->multicast != 0)
1010 printf (" Rx mulicast frames: %ld\n",
1012 if (stats->collisions != 0)
1013 printf (" No. of collisions: %ld\n",
1015 if (stats->rx_length_errors != 0)
1016 printf (" Rx length errors: %ld\n",
1017 stats->rx_length_errors);
1021 /**************************************************************************
1022 *network_start - Network Kick Off Routine UBoot
1025 **************************************************************************/
1027 bool db64360_eth_start (struct eth_device *dev)
1029 return (mv64360_eth_open (dev)); /* calls real open */
1032 /*************************************************************************
1033 **************************************************************************
1034 **************************************************************************
1035 * The second part is the low level driver of the gigE ethernet ports. *
1036 **************************************************************************
1037 **************************************************************************
1038 *************************************************************************/
1040 * based on Linux code
1041 * arch/powerpc/galileo/EVB64360/mv64360_eth.c - Driver for MV64360X ethernet ports
1042 * Copyright (C) 2002 rabeeh@galileo.co.il
1044 * This program is free software; you can redistribute it and/or
1045 * modify it under the terms of the GNU General Public License
1046 * as published by the Free Software Foundation; either version 2
1047 * of the License, or (at your option) any later version.
1049 * This program is distributed in the hope that it will be useful,
1050 * but WITHOUT ANY WARRANTY; without even the implied warranty of
1051 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1052 * GNU General Public License for more details.
1054 * You should have received a copy of the GNU General Public License
1055 * along with this program; if not, write to the Free Software
1056 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
1060 /********************************************************************************
1061 * Marvell's Gigabit Ethernet controller low level driver
1064 * This file introduce low level API to Marvell's Gigabit Ethernet
1065 * controller. This Gigabit Ethernet Controller driver API controls
1066 * 1) Operations (i.e. port init, start, reset etc').
1067 * 2) Data flow (i.e. port send, receive etc').
1068 * Each Gigabit Ethernet port is controlled via ETH_PORT_INFO
1070 * This struct includes user configuration information as well as
1071 * driver internal data needed for its operations.
1073 * Supported Features:
1074 * - This low level driver is OS independent. Allocating memory for
1075 * the descriptor rings and buffers are not within the scope of
1077 * - The user is free from Rx/Tx queue managing.
1078 * - This low level driver introduce functionality API that enable
1079 * the to operate Marvell's Gigabit Ethernet Controller in a
1081 * - Simple Gigabit Ethernet port operation API.
1082 * - Simple Gigabit Ethernet port data flow API.
1083 * - Data flow and operation API support per queue functionality.
1084 * - Support cached descriptors for better performance.
1085 * - Enable access to all four DRAM banks and internal SRAM memory
1087 * - PHY access and control API.
1088 * - Port control register configuration API.
1089 * - Full control over Unicast and Multicast MAC configurations.
1093 * Initialization phase
1094 * This phase complete the initialization of the ETH_PORT_INFO
1096 * User information regarding port configuration has to be set
1097 * prior to calling the port initialization routine. For example,
1098 * the user has to assign the port_phy_addr field which is board
1099 * depended parameter.
1100 * In this phase any port Tx/Rx activity is halted, MIB counters
1101 * are cleared, PHY address is set according to user parameter and
1102 * access to DRAM and internal SRAM memory spaces.
1104 * Driver ring initialization
1105 * Allocating memory for the descriptor rings and buffers is not
1106 * within the scope of this driver. Thus, the user is required to
1107 * allocate memory for the descriptors ring and buffers. Those
1108 * memory parameters are used by the Rx and Tx ring initialization
1109 * routines in order to curve the descriptor linked list in a form
1111 * Note: Pay special attention to alignment issues when using
1112 * cached descriptors/buffers. In this phase the driver store
1113 * information in the ETH_PORT_INFO struct regarding each queue
1117 * This phase prepares the Ethernet port for Rx and Tx activity.
1118 * It uses the information stored in the ETH_PORT_INFO struct to
1119 * initialize the various port registers.
1122 * All packet references to/from the driver are done using PKT_INFO
1124 * This struct is a unified struct used with Rx and Tx operations.
1125 * This way the user is not required to be familiar with neither
1126 * Tx nor Rx descriptors structures.
1127 * The driver's descriptors rings are management by indexes.
1128 * Those indexes controls the ring resources and used to indicate
1129 * a SW resource error:
1131 * This index points to the current available resource for use. For
1132 * example in Rx process this index will point to the descriptor
1133 * that will be passed to the user upon calling the receive routine.
1134 * In Tx process, this index will point to the descriptor
1135 * that will be assigned with the user packet info and transmitted.
1137 * This index points to the descriptor that need to restore its
1138 * resources. For example in Rx process, using the Rx buffer return
1139 * API will attach the buffer returned in packet info to the
1140 * descriptor pointed by 'used'. In Tx process, using the Tx
1141 * descriptor return will merely return the user packet info with
1142 * the command status of the transmitted buffer pointed by the
1143 * 'used' index. Nevertheless, it is essential to use this routine
1144 * to update the 'used' index.
1146 * This index supports Tx Scatter-Gather. It points to the first
1147 * descriptor of a packet assembled of multiple buffers. For example
1148 * when in middle of Such packet we have a Tx resource error the
1149 * 'curr' index get the value of 'first' to indicate that the ring
1150 * returned to its state before trying to transmit this packet.
1152 * Receive operation:
1153 * The eth_port_receive API set the packet information struct,
1154 * passed by the caller, with received information from the
1155 * 'current' SDMA descriptor.
1156 * It is the user responsibility to return this resource back
1157 * to the Rx descriptor ring to enable the reuse of this source.
1158 * Return Rx resource is done using the eth_rx_return_buff API.
1160 * Transmit operation:
1161 * The eth_port_send API supports Scatter-Gather which enables to
1162 * send a packet spanned over multiple buffers. This means that
1163 * for each packet info structure given by the user and put into
1164 * the Tx descriptors ring, will be transmitted only if the 'LAST'
1165 * bit will be set in the packet info command status field. This
1166 * API also consider restriction regarding buffer alignments and
1168 * The user must return a Tx resource after ensuring the buffer
1169 * has been transmitted to enable the Tx ring indexes to update.
1172 * This device is on-board. No jumper diagram is necessary.
1174 * EXTERNAL INTERFACE
1176 * Prior to calling the initialization routine eth_port_init() the user
1177 * must set the following fields under ETH_PORT_INFO struct:
1178 * port_num User Ethernet port number.
1179 * port_phy_addr User PHY address of Ethernet port.
1180 * port_mac_addr[6] User defined port MAC address.
1181 * port_config User port configuration value.
1182 * port_config_extend User port config extend value.
1183 * port_sdma_config User port SDMA config value.
1184 * port_serial_control User port serial control value.
1185 * *port_virt_to_phys () User function to cast virtual addr to CPU bus addr.
1186 * *port_private User scratch pad for user specific data structures.
1188 * This driver introduce a set of default values:
1189 * PORT_CONFIG_VALUE Default port configuration value
1190 * PORT_CONFIG_EXTEND_VALUE Default port extend configuration value
1191 * PORT_SDMA_CONFIG_VALUE Default sdma control value
1192 * PORT_SERIAL_CONTROL_VALUE Default port serial control value
1194 * This driver data flow is done using the PKT_INFO struct which is
1195 * a unified struct for Rx and Tx operations:
1196 * byte_cnt Tx/Rx descriptor buffer byte count.
1197 * l4i_chk CPU provided TCP Checksum. For Tx operation only.
1198 * cmd_sts Tx/Rx descriptor command status.
1199 * buf_ptr Tx/Rx descriptor buffer pointer.
1200 * return_info Tx/Rx user resource return information.
1203 * EXTERNAL SUPPORT REQUIREMENTS
1205 * This driver requires the following external support:
1207 * D_CACHE_FLUSH_LINE (address, address offset)
1209 * This macro applies assembly code to flush and invalidate cache
1211 * address - address base.
1212 * address offset - address offset
1217 * This macro applies assembly code to flush the CPU pipeline.
1219 *******************************************************************************/
1223 /* SDMA command macros */
1224 #define ETH_ENABLE_TX_QUEUE(tx_queue, eth_port) \
1225 MV_REG_WRITE(MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG(eth_port), (1 << tx_queue))
1227 #define ETH_DISABLE_TX_QUEUE(tx_queue, eth_port) \
1228 MV_REG_WRITE(MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG(eth_port),\
1229 (1 << (8 + tx_queue)))
1231 #define ETH_ENABLE_RX_QUEUE(rx_queue, eth_port) \
1232 MV_REG_WRITE(MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG(eth_port), (1 << rx_queue))
1234 #define ETH_DISABLE_RX_QUEUE(rx_queue, eth_port) \
1235 MV_REG_WRITE(MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG(eth_port), (1 << (8 + rx_queue)))
1237 #define CURR_RFD_GET(p_curr_desc, queue) \
1238 ((p_curr_desc) = p_eth_port_ctrl->p_rx_curr_desc_q[queue])
1240 #define CURR_RFD_SET(p_curr_desc, queue) \
1241 (p_eth_port_ctrl->p_rx_curr_desc_q[queue] = (p_curr_desc))
1243 #define USED_RFD_GET(p_used_desc, queue) \
1244 ((p_used_desc) = p_eth_port_ctrl->p_rx_used_desc_q[queue])
1246 #define USED_RFD_SET(p_used_desc, queue)\
1247 (p_eth_port_ctrl->p_rx_used_desc_q[queue] = (p_used_desc))
1250 #define CURR_TFD_GET(p_curr_desc, queue) \
1251 ((p_curr_desc) = p_eth_port_ctrl->p_tx_curr_desc_q[queue])
1253 #define CURR_TFD_SET(p_curr_desc, queue) \
1254 (p_eth_port_ctrl->p_tx_curr_desc_q[queue] = (p_curr_desc))
1256 #define USED_TFD_GET(p_used_desc, queue) \
1257 ((p_used_desc) = p_eth_port_ctrl->p_tx_used_desc_q[queue])
1259 #define USED_TFD_SET(p_used_desc, queue) \
1260 (p_eth_port_ctrl->p_tx_used_desc_q[queue] = (p_used_desc))
1262 #define FIRST_TFD_GET(p_first_desc, queue) \
1263 ((p_first_desc) = p_eth_port_ctrl->p_tx_first_desc_q[queue])
1265 #define FIRST_TFD_SET(p_first_desc, queue) \
1266 (p_eth_port_ctrl->p_tx_first_desc_q[queue] = (p_first_desc))
1269 /* Macros that save access to desc in order to find next desc pointer */
1270 #define RX_NEXT_DESC_PTR(p_rx_desc, queue) (ETH_RX_DESC*)(((((unsigned int)p_rx_desc - (unsigned int)p_eth_port_ctrl->p_rx_desc_area_base[queue]) + RX_DESC_ALIGNED_SIZE) % p_eth_port_ctrl->rx_desc_area_size[queue]) + (unsigned int)p_eth_port_ctrl->p_rx_desc_area_base[queue])
1272 #define TX_NEXT_DESC_PTR(p_tx_desc, queue) (ETH_TX_DESC*)(((((unsigned int)p_tx_desc - (unsigned int)p_eth_port_ctrl->p_tx_desc_area_base[queue]) + TX_DESC_ALIGNED_SIZE) % p_eth_port_ctrl->tx_desc_area_size[queue]) + (unsigned int)p_eth_port_ctrl->p_tx_desc_area_base[queue])
1274 #define LINK_UP_TIMEOUT 100000
1275 #define PHY_BUSY_TIMEOUT 10000000
1280 static void ethernet_phy_set (ETH_PORT eth_port_num, int phy_addr);
1281 static int ethernet_phy_get (ETH_PORT eth_port_num);
1283 /* Ethernet Port routines */
1284 static void eth_set_access_control (ETH_PORT eth_port_num,
1285 ETH_WIN_PARAM * param);
1286 static bool eth_port_uc_addr (ETH_PORT eth_port_num, unsigned char uc_nibble,
1287 ETH_QUEUE queue, int option);
1289 static bool eth_port_smc_addr (ETH_PORT eth_port_num,
1290 unsigned char mc_byte,
1291 ETH_QUEUE queue, int option);
1292 static bool eth_port_omc_addr (ETH_PORT eth_port_num,
1294 ETH_QUEUE queue, int option);
1297 static void eth_b_copy (unsigned int src_addr, unsigned int dst_addr,
1300 void eth_dbg (ETH_PORT_INFO * p_eth_port_ctrl);
1303 typedef enum _memory_bank { BANK0, BANK1, BANK2, BANK3 } MEMORY_BANK;
1304 u32 mv_get_dram_bank_base_addr (MEMORY_BANK bank)
1307 u32 enable = MV_REG_READ (MV64360_BASE_ADDR_ENABLE);
1309 if (enable & (1 << bank))
1312 result = MV_REG_READ (MV64360_CS_0_BASE_ADDR);
1314 result = MV_REG_READ (MV64360_CS_1_BASE_ADDR);
1316 result = MV_REG_READ (MV64360_CS_2_BASE_ADDR);
1318 result = MV_REG_READ (MV64360_CS_3_BASE_ADDR);
1319 result &= 0x0000ffff;
1320 result = result << 16;
1324 u32 mv_get_dram_bank_size (MEMORY_BANK bank)
1327 u32 enable = MV_REG_READ (MV64360_BASE_ADDR_ENABLE);
1329 if (enable & (1 << bank))
1332 result = MV_REG_READ (MV64360_CS_0_SIZE);
1334 result = MV_REG_READ (MV64360_CS_1_SIZE);
1336 result = MV_REG_READ (MV64360_CS_2_SIZE);
1338 result = MV_REG_READ (MV64360_CS_3_SIZE);
1340 result &= 0x0000ffff;
1341 result = result << 16;
1345 u32 mv_get_internal_sram_base (void)
1349 result = MV_REG_READ (MV64360_INTEGRATED_SRAM_BASE_ADDR);
1350 result &= 0x0000ffff;
1351 result = result << 16;
1355 /*******************************************************************************
1356 * eth_port_init - Initialize the Ethernet port driver
1359 * This function prepares the ethernet port to start its activity:
1360 * 1) Completes the ethernet port driver struct initialization toward port
1362 * 2) Resets the device to a quiescent state in case of warm reboot.
1363 * 3) Enable SDMA access to all four DRAM banks as well as internal SRAM.
1364 * 4) Clean MAC tables. The reset status of those tables is unknown.
1365 * 5) Set PHY address.
1366 * Note: Call this routine prior to eth_port_start routine and after setting
1367 * user values in the user fields of Ethernet port control struct (i.e.
1371 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet port control struct
1379 *******************************************************************************/
1380 static void eth_port_init (ETH_PORT_INFO * p_eth_port_ctrl)
1383 ETH_WIN_PARAM win_param;
1385 p_eth_port_ctrl->port_config = PORT_CONFIG_VALUE;
1386 p_eth_port_ctrl->port_config_extend = PORT_CONFIG_EXTEND_VALUE;
1387 p_eth_port_ctrl->port_sdma_config = PORT_SDMA_CONFIG_VALUE;
1388 p_eth_port_ctrl->port_serial_control = PORT_SERIAL_CONTROL_VALUE;
1390 p_eth_port_ctrl->port_rx_queue_command = 0;
1391 p_eth_port_ctrl->port_tx_queue_command = 0;
1393 /* Zero out SW structs */
1394 for (queue = 0; queue < MAX_RX_QUEUE_NUM; queue++) {
1395 CURR_RFD_SET ((ETH_RX_DESC *) 0x00000000, queue);
1396 USED_RFD_SET ((ETH_RX_DESC *) 0x00000000, queue);
1397 p_eth_port_ctrl->rx_resource_err[queue] = false;
1400 for (queue = 0; queue < MAX_TX_QUEUE_NUM; queue++) {
1401 CURR_TFD_SET ((ETH_TX_DESC *) 0x00000000, queue);
1402 USED_TFD_SET ((ETH_TX_DESC *) 0x00000000, queue);
1403 FIRST_TFD_SET ((ETH_TX_DESC *) 0x00000000, queue);
1404 p_eth_port_ctrl->tx_resource_err[queue] = false;
1407 eth_port_reset (p_eth_port_ctrl->port_num);
1409 /* Set access parameters for DRAM bank 0 */
1410 win_param.win = ETH_WIN0; /* Use Ethernet window 0 */
1411 win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */
1412 win_param.attributes = EBAR_ATTR_DRAM_CS0; /* Enable DRAM bank */
1413 #ifndef CONFIG_NOT_COHERENT_CACHE
1414 win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB;
1416 win_param.high_addr = 0;
1418 win_param.base_addr = mv_get_dram_bank_base_addr (BANK0);
1419 win_param.size = mv_get_dram_bank_size (BANK0); /* Get bank size */
1420 if (win_param.size == 0)
1421 win_param.enable = 0;
1423 win_param.enable = 1; /* Enable the access */
1424 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1426 /* Set the access control for address window (EPAPR) READ & WRITE */
1427 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1429 /* Set access parameters for DRAM bank 1 */
1430 win_param.win = ETH_WIN1; /* Use Ethernet window 1 */
1431 win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */
1432 win_param.attributes = EBAR_ATTR_DRAM_CS1; /* Enable DRAM bank */
1433 #ifndef CONFIG_NOT_COHERENT_CACHE
1434 win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB;
1436 win_param.high_addr = 0;
1438 win_param.base_addr = mv_get_dram_bank_base_addr (BANK1);
1439 win_param.size = mv_get_dram_bank_size (BANK1); /* Get bank size */
1440 if (win_param.size == 0)
1441 win_param.enable = 0;
1443 win_param.enable = 1; /* Enable the access */
1444 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1446 /* Set the access control for address window (EPAPR) READ & WRITE */
1447 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1449 /* Set access parameters for DRAM bank 2 */
1450 win_param.win = ETH_WIN2; /* Use Ethernet window 2 */
1451 win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */
1452 win_param.attributes = EBAR_ATTR_DRAM_CS2; /* Enable DRAM bank */
1453 #ifndef CONFIG_NOT_COHERENT_CACHE
1454 win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB;
1456 win_param.high_addr = 0;
1458 win_param.base_addr = mv_get_dram_bank_base_addr (BANK2);
1459 win_param.size = mv_get_dram_bank_size (BANK2); /* Get bank size */
1460 if (win_param.size == 0)
1461 win_param.enable = 0;
1463 win_param.enable = 1; /* Enable the access */
1464 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1466 /* Set the access control for address window (EPAPR) READ & WRITE */
1467 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1469 /* Set access parameters for DRAM bank 3 */
1470 win_param.win = ETH_WIN3; /* Use Ethernet window 3 */
1471 win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */
1472 win_param.attributes = EBAR_ATTR_DRAM_CS3; /* Enable DRAM bank */
1473 #ifndef CONFIG_NOT_COHERENT_CACHE
1474 win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB;
1476 win_param.high_addr = 0;
1478 win_param.base_addr = mv_get_dram_bank_base_addr (BANK3);
1479 win_param.size = mv_get_dram_bank_size (BANK3); /* Get bank size */
1480 if (win_param.size == 0)
1481 win_param.enable = 0;
1483 win_param.enable = 1; /* Enable the access */
1484 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1486 /* Set the access control for address window (EPAPR) READ & WRITE */
1487 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1489 /* Set access parameters for Internal SRAM */
1490 win_param.win = ETH_WIN4; /* Use Ethernet window 0 */
1491 win_param.target = EBAR_TARGET_CBS; /* Target - Internal SRAM */
1492 win_param.attributes = EBAR_ATTR_CBS_SRAM | EBAR_ATTR_CBS_SRAM_BLOCK0;
1493 win_param.high_addr = 0;
1494 win_param.base_addr = mv_get_internal_sram_base (); /* Get base addr */
1495 win_param.size = MV64360_INTERNAL_SRAM_SIZE; /* Get bank size */
1496 win_param.enable = 1; /* Enable the access */
1497 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1499 /* Set the access control for address window (EPAPR) READ & WRITE */
1500 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1502 eth_port_init_mac_tables (p_eth_port_ctrl->port_num);
1504 ethernet_phy_set (p_eth_port_ctrl->port_num,
1505 p_eth_port_ctrl->port_phy_addr);
1511 /*******************************************************************************
1512 * eth_port_start - Start the Ethernet port activity.
1515 * This routine prepares the Ethernet port for Rx and Tx activity:
1516 * 1. Initialize Tx and Rx Current Descriptor Pointer for each queue that
1517 * has been initialized a descriptor's ring (using ether_init_tx_desc_ring
1518 * for Tx and ether_init_rx_desc_ring for Rx)
1519 * 2. Initialize and enable the Ethernet configuration port by writing to
1520 * the port's configuration and command registers.
1521 * 3. Initialize and enable the SDMA by writing to the SDMA's
1522 * configuration and command registers.
1523 * After completing these steps, the ethernet port SDMA can starts to
1524 * perform Rx and Tx activities.
1526 * Note: Each Rx and Tx queue descriptor's list must be initialized prior
1527 * to calling this function (use ether_init_tx_desc_ring for Tx queues and
1528 * ether_init_rx_desc_ring for Rx queues).
1531 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet port control struct
1534 * Ethernet port is ready to receive and transmit.
1537 * false if the port PHY is not up.
1540 *******************************************************************************/
1541 static bool eth_port_start (ETH_PORT_INFO * p_eth_port_ctrl)
1544 volatile ETH_TX_DESC *p_tx_curr_desc;
1545 volatile ETH_RX_DESC *p_rx_curr_desc;
1546 unsigned int phy_reg_data;
1547 ETH_PORT eth_port_num = p_eth_port_ctrl->port_num;
1550 /* Assignment of Tx CTRP of given queue */
1551 for (queue = 0; queue < MAX_TX_QUEUE_NUM; queue++) {
1552 CURR_TFD_GET (p_tx_curr_desc, queue);
1553 MV_REG_WRITE ((MV64360_ETH_TX_CURRENT_QUEUE_DESC_PTR_0
1556 ((unsigned int) p_tx_curr_desc));
1560 /* Assignment of Rx CRDP of given queue */
1561 for (queue = 0; queue < MAX_RX_QUEUE_NUM; queue++) {
1562 CURR_RFD_GET (p_rx_curr_desc, queue);
1563 MV_REG_WRITE ((MV64360_ETH_RX_CURRENT_QUEUE_DESC_PTR_0
1566 ((unsigned int) p_rx_curr_desc));
1568 if (p_rx_curr_desc != NULL)
1569 /* Add the assigned Ethernet address to the port's address table */
1570 eth_port_uc_addr_set (p_eth_port_ctrl->port_num,
1571 p_eth_port_ctrl->port_mac_addr,
1575 /* Assign port configuration and command. */
1576 MV_REG_WRITE (MV64360_ETH_PORT_CONFIG_REG (eth_port_num),
1577 p_eth_port_ctrl->port_config);
1579 MV_REG_WRITE (MV64360_ETH_PORT_CONFIG_EXTEND_REG (eth_port_num),
1580 p_eth_port_ctrl->port_config_extend);
1582 MV_REG_WRITE (MV64360_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num),
1583 p_eth_port_ctrl->port_serial_control);
1585 MV_SET_REG_BITS (MV64360_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num),
1586 ETH_SERIAL_PORT_ENABLE);
1588 /* Assign port SDMA configuration */
1589 MV_REG_WRITE (MV64360_ETH_SDMA_CONFIG_REG (eth_port_num),
1590 p_eth_port_ctrl->port_sdma_config);
1592 MV_REG_WRITE (MV64360_ETH_TX_QUEUE_0_TOKEN_BUCKET_COUNT
1593 (eth_port_num), 0x3fffffff);
1594 MV_REG_WRITE (MV64360_ETH_TX_QUEUE_0_TOKEN_BUCKET_CONFIG
1595 (eth_port_num), 0x03fffcff);
1596 /* Turn off the port/queue bandwidth limitation */
1597 MV_REG_WRITE (MV64360_ETH_MAXIMUM_TRANSMIT_UNIT (eth_port_num), 0x0);
1599 /* Enable port Rx. */
1600 MV_REG_WRITE (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG (eth_port_num),
1601 p_eth_port_ctrl->port_rx_queue_command);
1603 /* Check if link is up */
1604 eth_port_read_smi_reg (eth_port_num, 1, &phy_reg_data);
1606 if (!(phy_reg_data & 0x20))
1612 /*******************************************************************************
1613 * eth_port_uc_addr_set - This function Set the port Unicast address.
1616 * This function Set the port Ethernet MAC address.
1619 * ETH_PORT eth_port_num Port number.
1620 * char * p_addr Address to be set
1621 * ETH_QUEUE queue Rx queue number for this MAC address.
1624 * Set MAC address low and high registers. also calls eth_port_uc_addr()
1625 * To set the unicast table with the proper information.
1630 *******************************************************************************/
1631 static void eth_port_uc_addr_set (ETH_PORT eth_port_num,
1632 unsigned char *p_addr, ETH_QUEUE queue)
1637 mac_l = (p_addr[4] << 8) | (p_addr[5]);
1638 mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) |
1639 (p_addr[2] << 8) | (p_addr[3] << 0);
1641 MV_REG_WRITE (MV64360_ETH_MAC_ADDR_LOW (eth_port_num), mac_l);
1642 MV_REG_WRITE (MV64360_ETH_MAC_ADDR_HIGH (eth_port_num), mac_h);
1644 /* Accept frames of this address */
1645 eth_port_uc_addr (eth_port_num, p_addr[5], queue, ACCEPT_MAC_ADDR);
1650 /*******************************************************************************
1651 * eth_port_uc_addr - This function Set the port unicast address table
1654 * This function locates the proper entry in the Unicast table for the
1655 * specified MAC nibble and sets its properties according to function
1659 * ETH_PORT eth_port_num Port number.
1660 * unsigned char uc_nibble Unicast MAC Address last nibble.
1661 * ETH_QUEUE queue Rx queue number for this MAC address.
1662 * int option 0 = Add, 1 = remove address.
1665 * This function add/removes MAC addresses from the port unicast address
1669 * true is output succeeded.
1670 * false if option parameter is invalid.
1672 *******************************************************************************/
1673 static bool eth_port_uc_addr (ETH_PORT eth_port_num,
1674 unsigned char uc_nibble,
1675 ETH_QUEUE queue, int option)
1677 unsigned int unicast_reg;
1678 unsigned int tbl_offset;
1679 unsigned int reg_offset;
1681 /* Locate the Unicast table entry */
1682 uc_nibble = (0xf & uc_nibble);
1683 tbl_offset = (uc_nibble / 4) * 4; /* Register offset from unicast table base */
1684 reg_offset = uc_nibble % 4; /* Entry offset within the above register */
1687 case REJECT_MAC_ADDR:
1688 /* Clear accepts frame bit at specified unicast DA table entry */
1690 MV_REG_READ ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
1694 unicast_reg &= (0x0E << (8 * reg_offset));
1696 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
1698 + tbl_offset), unicast_reg);
1701 case ACCEPT_MAC_ADDR:
1702 /* Set accepts frame bit at unicast DA filter table entry */
1704 MV_REG_READ ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
1708 unicast_reg |= ((0x01 | queue) << (8 * reg_offset));
1710 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
1712 + tbl_offset), unicast_reg);
1723 /*******************************************************************************
1724 * eth_port_mc_addr - Multicast address settings.
1727 * This API controls the MV device MAC multicast support.
1728 * The MV device supports multicast using two tables:
1729 * 1) Special Multicast Table for MAC addresses of the form
1730 * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_fF).
1731 * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
1732 * Table entries in the DA-Filter table.
1733 * In this case, the function calls eth_port_smc_addr() routine to set the
1734 * Special Multicast Table.
1735 * 2) Other Multicast Table for multicast of another type. A CRC-8bit
1736 * is used as an index to the Other Multicast Table entries in the
1738 * In this case, the function calculates the CRC-8bit value and calls
1739 * eth_port_omc_addr() routine to set the Other Multicast Table.
1741 * ETH_PORT eth_port_num Port number.
1742 * unsigned char *p_addr Unicast MAC Address.
1743 * ETH_QUEUE queue Rx queue number for this MAC address.
1744 * int option 0 = Add, 1 = remove address.
1750 * true is output succeeded.
1751 * false if add_address_table_entry( ) failed.
1753 *******************************************************************************/
1754 static void eth_port_mc_addr (ETH_PORT eth_port_num,
1755 unsigned char *p_addr,
1756 ETH_QUEUE queue, int option)
1760 unsigned char crc_result = 0;
1766 if ((p_addr[0] == 0x01) &&
1767 (p_addr[1] == 0x00) &&
1768 (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00))
1770 eth_port_smc_addr (eth_port_num, p_addr[5], queue, option);
1772 /* Calculate CRC-8 out of the given address */
1773 mac_h = (p_addr[0] << 8) | (p_addr[1]);
1774 mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) |
1775 (p_addr[4] << 8) | (p_addr[5] << 0);
1777 for (i = 0; i < 32; i++)
1778 mac_array[i] = (mac_l >> i) & 0x1;
1779 for (i = 32; i < 48; i++)
1780 mac_array[i] = (mac_h >> (i - 32)) & 0x1;
1783 crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^
1784 mac_array[39] ^ mac_array[35] ^ mac_array[34] ^
1785 mac_array[31] ^ mac_array[30] ^ mac_array[28] ^
1786 mac_array[23] ^ mac_array[21] ^ mac_array[19] ^
1787 mac_array[18] ^ mac_array[16] ^ mac_array[14] ^
1788 mac_array[12] ^ mac_array[8] ^ mac_array[7] ^
1789 mac_array[6] ^ mac_array[0];
1791 crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^
1792 mac_array[43] ^ mac_array[41] ^ mac_array[39] ^
1793 mac_array[36] ^ mac_array[34] ^ mac_array[32] ^
1794 mac_array[30] ^ mac_array[29] ^ mac_array[28] ^
1795 mac_array[24] ^ mac_array[23] ^ mac_array[22] ^
1796 mac_array[21] ^ mac_array[20] ^ mac_array[18] ^
1797 mac_array[17] ^ mac_array[16] ^ mac_array[15] ^
1798 mac_array[14] ^ mac_array[13] ^ mac_array[12] ^
1799 mac_array[9] ^ mac_array[6] ^ mac_array[1] ^
1802 crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^
1803 mac_array[43] ^ mac_array[42] ^ mac_array[39] ^
1804 mac_array[37] ^ mac_array[34] ^ mac_array[33] ^
1805 mac_array[29] ^ mac_array[28] ^ mac_array[25] ^
1806 mac_array[24] ^ mac_array[22] ^ mac_array[17] ^
1807 mac_array[15] ^ mac_array[13] ^ mac_array[12] ^
1808 mac_array[10] ^ mac_array[8] ^ mac_array[6] ^
1809 mac_array[2] ^ mac_array[1] ^ mac_array[0];
1811 crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^
1812 mac_array[43] ^ mac_array[40] ^ mac_array[38] ^
1813 mac_array[35] ^ mac_array[34] ^ mac_array[30] ^
1814 mac_array[29] ^ mac_array[26] ^ mac_array[25] ^
1815 mac_array[23] ^ mac_array[18] ^ mac_array[16] ^
1816 mac_array[14] ^ mac_array[13] ^ mac_array[11] ^
1817 mac_array[9] ^ mac_array[7] ^ mac_array[3] ^
1818 mac_array[2] ^ mac_array[1];
1820 crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^
1821 mac_array[41] ^ mac_array[39] ^ mac_array[36] ^
1822 mac_array[35] ^ mac_array[31] ^ mac_array[30] ^
1823 mac_array[27] ^ mac_array[26] ^ mac_array[24] ^
1824 mac_array[19] ^ mac_array[17] ^ mac_array[15] ^
1825 mac_array[14] ^ mac_array[12] ^ mac_array[10] ^
1826 mac_array[8] ^ mac_array[4] ^ mac_array[3] ^
1829 crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^
1830 mac_array[42] ^ mac_array[40] ^ mac_array[37] ^
1831 mac_array[36] ^ mac_array[32] ^ mac_array[31] ^
1832 mac_array[28] ^ mac_array[27] ^ mac_array[25] ^
1833 mac_array[20] ^ mac_array[18] ^ mac_array[16] ^
1834 mac_array[15] ^ mac_array[13] ^ mac_array[11] ^
1835 mac_array[9] ^ mac_array[5] ^ mac_array[4] ^
1838 crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^
1839 mac_array[41] ^ mac_array[38] ^ mac_array[37] ^
1840 mac_array[33] ^ mac_array[32] ^ mac_array[29] ^
1841 mac_array[28] ^ mac_array[26] ^ mac_array[21] ^
1842 mac_array[19] ^ mac_array[17] ^ mac_array[16] ^
1843 mac_array[14] ^ mac_array[12] ^ mac_array[10] ^
1844 mac_array[6] ^ mac_array[5] ^ mac_array[4];
1846 crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^
1847 mac_array[39] ^ mac_array[38] ^ mac_array[34] ^
1848 mac_array[33] ^ mac_array[30] ^ mac_array[29] ^
1849 mac_array[27] ^ mac_array[22] ^ mac_array[20] ^
1850 mac_array[18] ^ mac_array[17] ^ mac_array[15] ^
1851 mac_array[13] ^ mac_array[11] ^ mac_array[7] ^
1852 mac_array[6] ^ mac_array[5];
1854 for (i = 0; i < 8; i++)
1855 crc_result = crc_result | (crc[i] << i);
1857 eth_port_omc_addr (eth_port_num, crc_result, queue, option);
1862 /*******************************************************************************
1863 * eth_port_smc_addr - Special Multicast address settings.
1866 * This routine controls the MV device special MAC multicast support.
1867 * The Special Multicast Table for MAC addresses supports MAC of the form
1868 * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_fF).
1869 * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
1870 * Table entries in the DA-Filter table.
1871 * This function set the Special Multicast Table appropriate entry
1872 * according to the argument given.
1875 * ETH_PORT eth_port_num Port number.
1876 * unsigned char mc_byte Multicast addr last byte (MAC DA[7:0] bits).
1877 * ETH_QUEUE queue Rx queue number for this MAC address.
1878 * int option 0 = Add, 1 = remove address.
1884 * true is output succeeded.
1885 * false if option parameter is invalid.
1887 *******************************************************************************/
1888 static bool eth_port_smc_addr (ETH_PORT eth_port_num,
1889 unsigned char mc_byte,
1890 ETH_QUEUE queue, int option)
1892 unsigned int smc_table_reg;
1893 unsigned int tbl_offset;
1894 unsigned int reg_offset;
1896 /* Locate the SMC table entry */
1897 tbl_offset = (mc_byte / 4) * 4; /* Register offset from SMC table base */
1898 reg_offset = mc_byte % 4; /* Entry offset within the above register */
1902 case REJECT_MAC_ADDR:
1903 /* Clear accepts frame bit at specified Special DA table entry */
1905 MV_REG_READ ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset));
1906 smc_table_reg &= (0x0E << (8 * reg_offset));
1908 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), smc_table_reg);
1911 case ACCEPT_MAC_ADDR:
1912 /* Set accepts frame bit at specified Special DA table entry */
1914 MV_REG_READ ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset));
1915 smc_table_reg |= ((0x01 | queue) << (8 * reg_offset));
1917 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), smc_table_reg);
1926 /*******************************************************************************
1927 * eth_port_omc_addr - Multicast address settings.
1930 * This routine controls the MV device Other MAC multicast support.
1931 * The Other Multicast Table is used for multicast of another type.
1932 * A CRC-8bit is used as an index to the Other Multicast Table entries
1933 * in the DA-Filter table.
1934 * The function gets the CRC-8bit value from the calling routine and
1935 * set the Other Multicast Table appropriate entry according to the
1936 * CRC-8 argument given.
1939 * ETH_PORT eth_port_num Port number.
1940 * unsigned char crc8 A CRC-8bit (Polynomial: x^8+x^2+x^1+1).
1941 * ETH_QUEUE queue Rx queue number for this MAC address.
1942 * int option 0 = Add, 1 = remove address.
1948 * true is output succeeded.
1949 * false if option parameter is invalid.
1951 *******************************************************************************/
1952 static bool eth_port_omc_addr (ETH_PORT eth_port_num,
1954 ETH_QUEUE queue, int option)
1956 unsigned int omc_table_reg;
1957 unsigned int tbl_offset;
1958 unsigned int reg_offset;
1960 /* Locate the OMC table entry */
1961 tbl_offset = (crc8 / 4) * 4; /* Register offset from OMC table base */
1962 reg_offset = crc8 % 4; /* Entry offset within the above register */
1966 case REJECT_MAC_ADDR:
1967 /* Clear accepts frame bit at specified Other DA table entry */
1969 MV_REG_READ ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset));
1970 omc_table_reg &= (0x0E << (8 * reg_offset));
1972 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), omc_table_reg);
1975 case ACCEPT_MAC_ADDR:
1976 /* Set accepts frame bit at specified Other DA table entry */
1978 MV_REG_READ ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset));
1979 omc_table_reg |= ((0x01 | queue) << (8 * reg_offset));
1981 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), omc_table_reg);
1991 /*******************************************************************************
1992 * eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables
1995 * Go through all the DA filter tables (Unicast, Special Multicast & Other
1996 * Multicast) and set each entry to 0.
1999 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2002 * Multicast and Unicast packets are rejected.
2007 *******************************************************************************/
2008 static void eth_port_init_mac_tables (ETH_PORT eth_port_num)
2012 /* Clear DA filter unicast table (Ex_dFUT) */
2013 for (table_index = 0; table_index <= 0xC; table_index += 4)
2014 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
2015 (eth_port_num) + table_index), 0);
2017 for (table_index = 0; table_index <= 0xFC; table_index += 4) {
2018 /* Clear DA filter special multicast table (Ex_dFSMT) */
2019 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + table_index), 0);
2020 /* Clear DA filter other multicast table (Ex_dFOMT) */
2021 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + table_index), 0);
2025 /*******************************************************************************
2026 * eth_clear_mib_counters - Clear all MIB counters
2029 * This function clears all MIB counters of a specific ethernet port.
2030 * A read from the MIB counter will reset the counter.
2033 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2036 * After reading all MIB counters, the counters resets.
2039 * MIB counter value.
2041 *******************************************************************************/
2042 static void eth_clear_mib_counters (ETH_PORT eth_port_num)
2046 /* Perform dummy reads from MIB counters */
2047 for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION;
2049 MV_REG_READ((MV64360_ETH_MIB_COUNTERS_BASE(eth_port_num) + i));
2054 /*******************************************************************************
2055 * eth_read_mib_counter - Read a MIB counter
2058 * This function reads a MIB counter of a specific ethernet port.
2059 * NOTE - If read from ETH_MIB_GOOD_OCTETS_RECEIVED_LOW, then the
2060 * following read must be from ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH
2061 * register. The same applies for ETH_MIB_GOOD_OCTETS_SENT_LOW and
2062 * ETH_MIB_GOOD_OCTETS_SENT_HIGH
2065 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2066 * unsigned int mib_offset MIB counter offset (use ETH_MIB_... macros).
2069 * After reading the MIB counter, the counter resets.
2072 * MIB counter value.
2074 *******************************************************************************/
2075 unsigned int eth_read_mib_counter (ETH_PORT eth_port_num,
2076 unsigned int mib_offset)
2078 return (MV_REG_READ (MV64360_ETH_MIB_COUNTERS_BASE (eth_port_num)
2082 /*******************************************************************************
2083 * ethernet_phy_set - Set the ethernet port PHY address.
2086 * This routine set the ethernet port PHY address according to given
2090 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2093 * Set PHY Address Register with given PHY address parameter.
2098 *******************************************************************************/
2099 static void ethernet_phy_set (ETH_PORT eth_port_num, int phy_addr)
2101 unsigned int reg_data;
2103 reg_data = MV_REG_READ (MV64360_ETH_PHY_ADDR_REG);
2105 reg_data &= ~(0x1F << (5 * eth_port_num));
2106 reg_data |= (phy_addr << (5 * eth_port_num));
2108 MV_REG_WRITE (MV64360_ETH_PHY_ADDR_REG, reg_data);
2113 /*******************************************************************************
2114 * ethernet_phy_get - Get the ethernet port PHY address.
2117 * This routine returns the given ethernet port PHY address.
2120 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2128 *******************************************************************************/
2129 static int ethernet_phy_get (ETH_PORT eth_port_num)
2131 unsigned int reg_data;
2133 reg_data = MV_REG_READ (MV64360_ETH_PHY_ADDR_REG);
2135 return ((reg_data >> (5 * eth_port_num)) & 0x1f);
2138 /*******************************************************************************
2139 * ethernet_phy_reset - Reset Ethernet port PHY.
2142 * This routine utilize the SMI interface to reset the ethernet port PHY.
2143 * The routine waits until the link is up again or link up is timeout.
2146 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2149 * The ethernet port PHY renew its link.
2154 *******************************************************************************/
2155 static bool ethernet_phy_reset (ETH_PORT eth_port_num)
2157 unsigned int time_out = 50;
2158 unsigned int phy_reg_data;
2161 eth_port_read_smi_reg (eth_port_num, 0, &phy_reg_data);
2162 phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */
2163 eth_port_write_smi_reg (eth_port_num, 0, phy_reg_data);
2165 /* Poll on the PHY LINK */
2167 eth_port_read_smi_reg (eth_port_num, 1, &phy_reg_data);
2169 if (time_out-- == 0)
2172 while (!(phy_reg_data & 0x20));
2177 /*******************************************************************************
2178 * eth_port_reset - Reset Ethernet port
2181 * This routine resets the chip by aborting any SDMA engine activity and
2182 * clearing the MIB counters. The Receiver and the Transmit unit are in
2183 * idle state after this command is performed and the port is disabled.
2186 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2189 * Channel activity is halted.
2194 *******************************************************************************/
2195 static void eth_port_reset (ETH_PORT eth_port_num)
2197 unsigned int reg_data;
2199 /* Stop Tx port activity. Check port Tx activity. */
2201 MV_REG_READ (MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG
2204 if (reg_data & 0xFF) {
2205 /* Issue stop command for active channels only */
2206 MV_REG_WRITE (MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG
2207 (eth_port_num), (reg_data << 8));
2209 /* Wait for all Tx activity to terminate. */
2211 /* Check port cause register that all Tx queues are stopped */
2214 (MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG
2217 while (reg_data & 0xFF);
2220 /* Stop Rx port activity. Check port Rx activity. */
2222 MV_REG_READ (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG
2225 if (reg_data & 0xFF) {
2226 /* Issue stop command for active channels only */
2227 MV_REG_WRITE (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG
2228 (eth_port_num), (reg_data << 8));
2230 /* Wait for all Rx activity to terminate. */
2232 /* Check port cause register that all Rx queues are stopped */
2235 (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG
2238 while (reg_data & 0xFF);
2242 /* Clear all MIB counters */
2243 eth_clear_mib_counters (eth_port_num);
2245 /* Reset the Enable bit in the Configuration Register */
2247 MV_REG_READ (MV64360_ETH_PORT_SERIAL_CONTROL_REG
2249 reg_data &= ~ETH_SERIAL_PORT_ENABLE;
2250 MV_REG_WRITE (MV64360_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num),
2256 #if 0 /* Not needed here */
2257 /*******************************************************************************
2258 * ethernet_set_config_reg - Set specified bits in configuration register.
2261 * This function sets specified bits in the given ethernet
2262 * configuration register.
2265 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2266 * unsigned int value 32 bit value.
2269 * The set bits in the value parameter are set in the configuration
2275 *******************************************************************************/
2276 static void ethernet_set_config_reg (ETH_PORT eth_port_num,
2279 unsigned int eth_config_reg;
2282 MV_REG_READ (MV64360_ETH_PORT_CONFIG_REG (eth_port_num));
2283 eth_config_reg |= value;
2284 MV_REG_WRITE (MV64360_ETH_PORT_CONFIG_REG (eth_port_num),
2292 /*******************************************************************************
2293 * ethernet_reset_config_reg - Reset specified bits in configuration register.
2296 * This function resets specified bits in the given Ethernet
2297 * configuration register.
2300 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2301 * unsigned int value 32 bit value.
2304 * The set bits in the value parameter are reset in the configuration
2310 *******************************************************************************/
2311 static void ethernet_reset_config_reg (ETH_PORT eth_port_num,
2314 unsigned int eth_config_reg;
2316 eth_config_reg = MV_REG_READ (MV64360_ETH_PORT_CONFIG_EXTEND_REG
2318 eth_config_reg &= ~value;
2319 MV_REG_WRITE (MV64360_ETH_PORT_CONFIG_EXTEND_REG (eth_port_num),
2326 #if 0 /* Not needed here */
2327 /*******************************************************************************
2328 * ethernet_get_config_reg - Get the port configuration register
2331 * This function returns the configuration register value of the given
2335 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2341 * Port configuration register value.
2343 *******************************************************************************/
2344 static unsigned int ethernet_get_config_reg (ETH_PORT eth_port_num)
2346 unsigned int eth_config_reg;
2348 eth_config_reg = MV_REG_READ (MV64360_ETH_PORT_CONFIG_EXTEND_REG
2350 return eth_config_reg;
2355 /*******************************************************************************
2356 * eth_port_read_smi_reg - Read PHY registers
2359 * This routine utilize the SMI interface to interact with the PHY in
2360 * order to perform PHY register read.
2363 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2364 * unsigned int phy_reg PHY register address offset.
2365 * unsigned int *value Register value buffer.
2368 * Write the value of a specified PHY register into given buffer.
2371 * false if the PHY is busy or read data is not in valid state.
2374 *******************************************************************************/
2375 static bool eth_port_read_smi_reg (ETH_PORT eth_port_num,
2376 unsigned int phy_reg, unsigned int *value)
2378 unsigned int reg_value;
2379 unsigned int time_out = PHY_BUSY_TIMEOUT;
2382 phy_addr = ethernet_phy_get (eth_port_num);
2383 /* printf(" Phy-Port %d has addess %d \n",eth_port_num, phy_addr );*/
2385 /* first check that it is not busy */
2387 reg_value = MV_REG_READ (MV64360_ETH_SMI_REG);
2388 if (time_out-- == 0) {
2392 while (reg_value & ETH_SMI_BUSY);
2396 MV_REG_WRITE (MV64360_ETH_SMI_REG,
2397 (phy_addr << 16) | (phy_reg << 21) |
2398 ETH_SMI_OPCODE_READ);
2400 time_out = PHY_BUSY_TIMEOUT; /* initialize the time out var again */
2403 reg_value = MV_REG_READ (MV64360_ETH_SMI_REG);
2404 if (time_out-- == 0) {
2408 while ((reg_value & ETH_SMI_READ_VALID) != ETH_SMI_READ_VALID); /* Bit set equ operation done */
2410 /* Wait for the data to update in the SMI register */
2411 #define PHY_UPDATE_TIMEOUT 10000
2412 for (time_out = 0; time_out < PHY_UPDATE_TIMEOUT; time_out++);
2414 reg_value = MV_REG_READ (MV64360_ETH_SMI_REG);
2416 *value = reg_value & 0xffff;
2421 /*******************************************************************************
2422 * eth_port_write_smi_reg - Write to PHY registers
2425 * This routine utilize the SMI interface to interact with the PHY in
2426 * order to perform writes to PHY registers.
2429 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2430 * unsigned int phy_reg PHY register address offset.
2431 * unsigned int value Register value.
2434 * Write the given value to the specified PHY register.
2437 * false if the PHY is busy.
2440 *******************************************************************************/
2441 static bool eth_port_write_smi_reg (ETH_PORT eth_port_num,
2442 unsigned int phy_reg, unsigned int value)
2444 unsigned int reg_value;
2445 unsigned int time_out = PHY_BUSY_TIMEOUT;
2448 phy_addr = ethernet_phy_get (eth_port_num);
2450 /* first check that it is not busy */
2452 reg_value = MV_REG_READ (MV64360_ETH_SMI_REG);
2453 if (time_out-- == 0) {
2457 while (reg_value & ETH_SMI_BUSY);
2460 MV_REG_WRITE (MV64360_ETH_SMI_REG,
2461 (phy_addr << 16) | (phy_reg << 21) |
2462 ETH_SMI_OPCODE_WRITE | (value & 0xffff));
2466 /*******************************************************************************
2467 * eth_set_access_control - Config address decode parameters for Ethernet unit
2470 * This function configures the address decode parameters for the Gigabit
2471 * Ethernet Controller according the given parameters struct.
2474 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2475 * ETH_WIN_PARAM *param Address decode parameter struct.
2478 * An access window is opened using the given access parameters.
2483 *******************************************************************************/
2484 static void eth_set_access_control (ETH_PORT eth_port_num,
2485 ETH_WIN_PARAM * param)
2487 unsigned int access_prot_reg;
2489 /* Set access control register */
2490 access_prot_reg = MV_REG_READ (MV64360_ETH_ACCESS_PROTECTION_REG
2492 access_prot_reg &= (~(3 << (param->win * 2))); /* clear window permission */
2493 access_prot_reg |= (param->access_ctrl << (param->win * 2));
2494 MV_REG_WRITE (MV64360_ETH_ACCESS_PROTECTION_REG (eth_port_num),
2497 /* Set window Size reg (SR) */
2498 MV_REG_WRITE ((MV64360_ETH_SIZE_REG_0 +
2499 (ETH_SIZE_REG_GAP * param->win)),
2500 (((param->size / 0x10000) - 1) << 16));
2502 /* Set window Base address reg (BA) */
2503 MV_REG_WRITE ((MV64360_ETH_BAR_0 + (ETH_BAR_GAP * param->win)),
2504 (param->target | param->attributes | param->base_addr));
2505 /* High address remap reg (HARR) */
2507 MV_REG_WRITE ((MV64360_ETH_HIGH_ADDR_REMAP_REG_0 +
2508 (ETH_HIGH_ADDR_REMAP_REG_GAP * param->win)),
2511 /* Base address enable reg (BARER) */
2512 if (param->enable == 1)
2513 MV_RESET_REG_BITS (MV64360_ETH_BASE_ADDR_ENABLE_REG,
2516 MV_SET_REG_BITS (MV64360_ETH_BASE_ADDR_ENABLE_REG,
2520 /*******************************************************************************
2521 * ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
2524 * This function prepares a Rx chained list of descriptors and packet
2525 * buffers in a form of a ring. The routine must be called after port
2526 * initialization routine and before port start routine.
2527 * The Ethernet SDMA engine uses CPU bus addresses to access the various
2528 * devices in the system (i.e. DRAM). This function uses the ethernet
2529 * struct 'virtual to physical' routine (set by the user) to set the ring
2530 * with physical addresses.
2533 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2534 * ETH_QUEUE rx_queue Number of Rx queue.
2535 * int rx_desc_num Number of Rx descriptors
2536 * int rx_buff_size Size of Rx buffer
2537 * unsigned int rx_desc_base_addr Rx descriptors memory area base addr.
2538 * unsigned int rx_buff_base_addr Rx buffer memory area base addr.
2541 * The routine updates the Ethernet port control struct with information
2542 * regarding the Rx descriptors and buffers.
2545 * false if the given descriptors memory area is not aligned according to
2546 * Ethernet SDMA specifications.
2549 *******************************************************************************/
2550 static bool ether_init_rx_desc_ring (ETH_PORT_INFO * p_eth_port_ctrl,
2554 unsigned int rx_desc_base_addr,
2555 unsigned int rx_buff_base_addr)
2557 ETH_RX_DESC *p_rx_desc;
2558 ETH_RX_DESC *p_rx_prev_desc; /* pointer to link with the last descriptor */
2559 unsigned int buffer_addr;
2560 int ix; /* a counter */
2563 p_rx_desc = (ETH_RX_DESC *) rx_desc_base_addr;
2564 p_rx_prev_desc = p_rx_desc;
2565 buffer_addr = rx_buff_base_addr;
2567 /* Rx desc Must be 4LW aligned (i.e. Descriptor_Address[3:0]=0000). */
2568 if (rx_buff_base_addr & 0xF)
2571 /* Rx buffers are limited to 64K bytes and Minimum size is 8 bytes */
2572 if ((rx_buff_size < 8) || (rx_buff_size > RX_BUFFER_MAX_SIZE))
2575 /* Rx buffers must be 64-bit aligned. */
2576 if ((rx_buff_base_addr + rx_buff_size) & 0x7)
2579 /* initialize the Rx descriptors ring */
2580 for (ix = 0; ix < rx_desc_num; ix++) {
2581 p_rx_desc->buf_size = rx_buff_size;
2582 p_rx_desc->byte_cnt = 0x0000;
2583 p_rx_desc->cmd_sts =
2584 ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
2585 p_rx_desc->next_desc_ptr =
2586 ((unsigned int) p_rx_desc) + RX_DESC_ALIGNED_SIZE;
2587 p_rx_desc->buf_ptr = buffer_addr;
2588 p_rx_desc->return_info = 0x00000000;
2589 D_CACHE_FLUSH_LINE (p_rx_desc, 0);
2590 buffer_addr += rx_buff_size;
2591 p_rx_prev_desc = p_rx_desc;
2592 p_rx_desc = (ETH_RX_DESC *)
2593 ((unsigned int) p_rx_desc + RX_DESC_ALIGNED_SIZE);
2596 /* Closing Rx descriptors ring */
2597 p_rx_prev_desc->next_desc_ptr = (rx_desc_base_addr);
2598 D_CACHE_FLUSH_LINE (p_rx_prev_desc, 0);
2600 /* Save Rx desc pointer to driver struct. */
2601 CURR_RFD_SET ((ETH_RX_DESC *) rx_desc_base_addr, rx_queue);
2602 USED_RFD_SET ((ETH_RX_DESC *) rx_desc_base_addr, rx_queue);
2604 p_eth_port_ctrl->p_rx_desc_area_base[rx_queue] =
2605 (ETH_RX_DESC *) rx_desc_base_addr;
2606 p_eth_port_ctrl->rx_desc_area_size[rx_queue] =
2607 rx_desc_num * RX_DESC_ALIGNED_SIZE;
2609 p_eth_port_ctrl->port_rx_queue_command |= (1 << rx_queue);
2614 /*******************************************************************************
2615 * ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory.
2618 * This function prepares a Tx chained list of descriptors and packet
2619 * buffers in a form of a ring. The routine must be called after port
2620 * initialization routine and before port start routine.
2621 * The Ethernet SDMA engine uses CPU bus addresses to access the various
2622 * devices in the system (i.e. DRAM). This function uses the ethernet
2623 * struct 'virtual to physical' routine (set by the user) to set the ring
2624 * with physical addresses.
2627 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2628 * ETH_QUEUE tx_queue Number of Tx queue.
2629 * int tx_desc_num Number of Tx descriptors
2630 * int tx_buff_size Size of Tx buffer
2631 * unsigned int tx_desc_base_addr Tx descriptors memory area base addr.
2632 * unsigned int tx_buff_base_addr Tx buffer memory area base addr.
2635 * The routine updates the Ethernet port control struct with information
2636 * regarding the Tx descriptors and buffers.
2639 * false if the given descriptors memory area is not aligned according to
2640 * Ethernet SDMA specifications.
2643 *******************************************************************************/
2644 static bool ether_init_tx_desc_ring (ETH_PORT_INFO * p_eth_port_ctrl,
2648 unsigned int tx_desc_base_addr,
2649 unsigned int tx_buff_base_addr)
2652 ETH_TX_DESC *p_tx_desc;
2653 ETH_TX_DESC *p_tx_prev_desc;
2654 unsigned int buffer_addr;
2655 int ix; /* a counter */
2658 /* save the first desc pointer to link with the last descriptor */
2659 p_tx_desc = (ETH_TX_DESC *) tx_desc_base_addr;
2660 p_tx_prev_desc = p_tx_desc;
2661 buffer_addr = tx_buff_base_addr;
2663 /* Tx desc Must be 4LW aligned (i.e. Descriptor_Address[3:0]=0000). */
2664 if (tx_buff_base_addr & 0xF)
2667 /* Tx buffers are limited to 64K bytes and Minimum size is 8 bytes */
2668 if ((tx_buff_size > TX_BUFFER_MAX_SIZE)
2669 || (tx_buff_size < TX_BUFFER_MIN_SIZE))
2672 /* Initialize the Tx descriptors ring */
2673 for (ix = 0; ix < tx_desc_num; ix++) {
2674 p_tx_desc->byte_cnt = 0x0000;
2675 p_tx_desc->l4i_chk = 0x0000;
2676 p_tx_desc->cmd_sts = 0x00000000;
2677 p_tx_desc->next_desc_ptr =
2678 ((unsigned int) p_tx_desc) + TX_DESC_ALIGNED_SIZE;
2680 p_tx_desc->buf_ptr = buffer_addr;
2681 p_tx_desc->return_info = 0x00000000;
2682 D_CACHE_FLUSH_LINE (p_tx_desc, 0);
2683 buffer_addr += tx_buff_size;
2684 p_tx_prev_desc = p_tx_desc;
2685 p_tx_desc = (ETH_TX_DESC *)
2686 ((unsigned int) p_tx_desc + TX_DESC_ALIGNED_SIZE);
2689 /* Closing Tx descriptors ring */
2690 p_tx_prev_desc->next_desc_ptr = tx_desc_base_addr;
2691 D_CACHE_FLUSH_LINE (p_tx_prev_desc, 0);
2692 /* Set Tx desc pointer in driver struct. */
2693 CURR_TFD_SET ((ETH_TX_DESC *) tx_desc_base_addr, tx_queue);
2694 USED_TFD_SET ((ETH_TX_DESC *) tx_desc_base_addr, tx_queue);
2696 /* Init Tx ring base and size parameters */
2697 p_eth_port_ctrl->p_tx_desc_area_base[tx_queue] =
2698 (ETH_TX_DESC *) tx_desc_base_addr;
2699 p_eth_port_ctrl->tx_desc_area_size[tx_queue] =
2700 (tx_desc_num * TX_DESC_ALIGNED_SIZE);
2702 /* Add the queue to the list of Tx queues of this port */
2703 p_eth_port_ctrl->port_tx_queue_command |= (1 << tx_queue);
2708 /*******************************************************************************
2709 * eth_port_send - Send an Ethernet packet
2712 * This routine send a given packet described by p_pktinfo parameter. It
2713 * supports transmitting of a packet spaned over multiple buffers. The
2714 * routine updates 'curr' and 'first' indexes according to the packet
2715 * segment passed to the routine. In case the packet segment is first,
2716 * the 'first' index is update. In any case, the 'curr' index is updated.
2717 * If the routine get into Tx resource error it assigns 'curr' index as
2718 * 'first'. This way the function can abort Tx process of multiple
2719 * descriptors per packet.
2722 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2723 * ETH_QUEUE tx_queue Number of Tx queue.
2724 * PKT_INFO *p_pkt_info User packet buffer.
2727 * Tx ring 'curr' and 'first' indexes are updated.
2730 * ETH_QUEUE_FULL in case of Tx resource error.
2731 * ETH_ERROR in case the routine can not access Tx desc ring.
2732 * ETH_QUEUE_LAST_RESOURCE if the routine uses the last Tx resource.
2735 *******************************************************************************/
2736 static ETH_FUNC_RET_STATUS eth_port_send (ETH_PORT_INFO * p_eth_port_ctrl,
2738 PKT_INFO * p_pkt_info)
2740 volatile ETH_TX_DESC *p_tx_desc_first;
2741 volatile ETH_TX_DESC *p_tx_desc_curr;
2742 volatile ETH_TX_DESC *p_tx_next_desc_curr;
2743 volatile ETH_TX_DESC *p_tx_desc_used;
2744 unsigned int command_status;
2746 /* Do not process Tx ring in case of Tx ring resource error */
2747 if (p_eth_port_ctrl->tx_resource_err[tx_queue] == true)
2748 return ETH_QUEUE_FULL;
2750 /* Get the Tx Desc ring indexes */
2751 CURR_TFD_GET (p_tx_desc_curr, tx_queue);
2752 USED_TFD_GET (p_tx_desc_used, tx_queue);
2754 if (p_tx_desc_curr == NULL)
2757 /* The following parameters are used to save readings from memory */
2758 p_tx_next_desc_curr = TX_NEXT_DESC_PTR (p_tx_desc_curr, tx_queue);
2759 command_status = p_pkt_info->cmd_sts | ETH_ZERO_PADDING | ETH_GEN_CRC;
2761 if (command_status & (ETH_TX_FIRST_DESC)) {
2762 /* Update first desc */
2763 FIRST_TFD_SET (p_tx_desc_curr, tx_queue);
2764 p_tx_desc_first = p_tx_desc_curr;
2766 FIRST_TFD_GET (p_tx_desc_first, tx_queue);
2767 command_status |= ETH_BUFFER_OWNED_BY_DMA;
2770 /* Buffers with a payload smaller than 8 bytes must be aligned to 64-bit */
2771 /* boundary. We use the memory allocated for Tx descriptor. This memory */
2772 /* located in TX_BUF_OFFSET_IN_DESC offset within the Tx descriptor. */
2773 if (p_pkt_info->byte_cnt <= 8) {
2774 printf ("You have failed in the < 8 bytes errata - fixme\n"); /* RABEEH - TBD */
2777 p_tx_desc_curr->buf_ptr =
2778 (unsigned int) p_tx_desc_curr + TX_BUF_OFFSET_IN_DESC;
2779 eth_b_copy (p_pkt_info->buf_ptr, p_tx_desc_curr->buf_ptr,
2780 p_pkt_info->byte_cnt);
2782 p_tx_desc_curr->buf_ptr = p_pkt_info->buf_ptr;
2784 p_tx_desc_curr->byte_cnt = p_pkt_info->byte_cnt;
2785 p_tx_desc_curr->return_info = p_pkt_info->return_info;
2787 if (p_pkt_info->cmd_sts & (ETH_TX_LAST_DESC)) {
2788 /* Set last desc with DMA ownership and interrupt enable. */
2789 p_tx_desc_curr->cmd_sts = command_status |
2790 ETH_BUFFER_OWNED_BY_DMA | ETH_TX_ENABLE_INTERRUPT;
2792 if (p_tx_desc_curr != p_tx_desc_first)
2793 p_tx_desc_first->cmd_sts |= ETH_BUFFER_OWNED_BY_DMA;
2795 /* Flush CPU pipe */
2797 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_curr, 0);
2798 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_first, 0);
2801 /* Apply send command */
2802 ETH_ENABLE_TX_QUEUE (tx_queue, p_eth_port_ctrl->port_num);
2804 /* Finish Tx packet. Update first desc in case of Tx resource error */
2805 p_tx_desc_first = p_tx_next_desc_curr;
2806 FIRST_TFD_SET (p_tx_desc_first, tx_queue);
2809 p_tx_desc_curr->cmd_sts = command_status;
2810 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_curr, 0);
2813 /* Check for ring index overlap in the Tx desc ring */
2814 if (p_tx_next_desc_curr == p_tx_desc_used) {
2815 /* Update the current descriptor */
2816 CURR_TFD_SET (p_tx_desc_first, tx_queue);
2818 p_eth_port_ctrl->tx_resource_err[tx_queue] = true;
2819 return ETH_QUEUE_LAST_RESOURCE;
2821 /* Update the current descriptor */
2822 CURR_TFD_SET (p_tx_next_desc_curr, tx_queue);
2827 /*******************************************************************************
2828 * eth_tx_return_desc - Free all used Tx descriptors
2831 * This routine returns the transmitted packet information to the caller.
2832 * It uses the 'first' index to support Tx desc return in case a transmit
2833 * of a packet spanned over multiple buffer still in process.
2834 * In case the Tx queue was in "resource error" condition, where there are
2835 * no available Tx resources, the function resets the resource error flag.
2838 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2839 * ETH_QUEUE tx_queue Number of Tx queue.
2840 * PKT_INFO *p_pkt_info User packet buffer.
2843 * Tx ring 'first' and 'used' indexes are updated.
2846 * ETH_ERROR in case the routine can not access Tx desc ring.
2847 * ETH_RETRY in case there is transmission in process.
2848 * ETH_END_OF_JOB if the routine has nothing to release.
2851 *******************************************************************************/
2852 static ETH_FUNC_RET_STATUS eth_tx_return_desc (ETH_PORT_INFO *
2855 PKT_INFO * p_pkt_info)
2857 volatile ETH_TX_DESC *p_tx_desc_used = NULL;
2858 volatile ETH_TX_DESC *p_tx_desc_first = NULL;
2859 unsigned int command_status;
2862 /* Get the Tx Desc ring indexes */
2863 USED_TFD_GET (p_tx_desc_used, tx_queue);
2864 FIRST_TFD_GET (p_tx_desc_first, tx_queue);
2868 if (p_tx_desc_used == NULL)
2871 command_status = p_tx_desc_used->cmd_sts;
2873 /* Still transmitting... */
2874 if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
2875 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_used, 0);
2879 /* Stop release. About to overlap the current available Tx descriptor */
2880 if ((p_tx_desc_used == p_tx_desc_first) &&
2881 (p_eth_port_ctrl->tx_resource_err[tx_queue] == false)) {
2882 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_used, 0);
2883 return ETH_END_OF_JOB;
2886 /* Pass the packet information to the caller */
2887 p_pkt_info->cmd_sts = command_status;
2888 p_pkt_info->return_info = p_tx_desc_used->return_info;
2889 p_tx_desc_used->return_info = 0;
2891 /* Update the next descriptor to release. */
2892 USED_TFD_SET (TX_NEXT_DESC_PTR (p_tx_desc_used, tx_queue), tx_queue);
2894 /* Any Tx return cancels the Tx resource error status */
2895 if (p_eth_port_ctrl->tx_resource_err[tx_queue] == true)
2896 p_eth_port_ctrl->tx_resource_err[tx_queue] = false;
2898 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_used, 0);
2904 /*******************************************************************************
2905 * eth_port_receive - Get received information from Rx ring.
2908 * This routine returns the received data to the caller. There is no
2909 * data copying during routine operation. All information is returned
2910 * using pointer to packet information struct passed from the caller.
2911 * If the routine exhausts Rx ring resources then the resource error flag
2915 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2916 * ETH_QUEUE rx_queue Number of Rx queue.
2917 * PKT_INFO *p_pkt_info User packet buffer.
2920 * Rx ring current and used indexes are updated.
2923 * ETH_ERROR in case the routine can not access Rx desc ring.
2924 * ETH_QUEUE_FULL if Rx ring resources are exhausted.
2925 * ETH_END_OF_JOB if there is no received data.
2928 *******************************************************************************/
2929 static ETH_FUNC_RET_STATUS eth_port_receive (ETH_PORT_INFO * p_eth_port_ctrl,
2931 PKT_INFO * p_pkt_info)
2933 volatile ETH_RX_DESC *p_rx_curr_desc;
2934 volatile ETH_RX_DESC *p_rx_next_curr_desc;
2935 volatile ETH_RX_DESC *p_rx_used_desc;
2936 unsigned int command_status;
2938 /* Do not process Rx ring in case of Rx ring resource error */
2939 if (p_eth_port_ctrl->rx_resource_err[rx_queue] == true) {
2940 printf ("\nRx Queue is full ...\n");
2941 return ETH_QUEUE_FULL;
2944 /* Get the Rx Desc ring 'curr and 'used' indexes */
2945 CURR_RFD_GET (p_rx_curr_desc, rx_queue);
2946 USED_RFD_GET (p_rx_used_desc, rx_queue);
2949 if (p_rx_curr_desc == NULL)
2952 /* The following parameters are used to save readings from memory */
2953 p_rx_next_curr_desc = RX_NEXT_DESC_PTR (p_rx_curr_desc, rx_queue);
2954 command_status = p_rx_curr_desc->cmd_sts;
2956 /* Nothing to receive... */
2957 if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
2958 /* DP(printf("Rx: command_status: %08x\n", command_status)); */
2959 D_CACHE_FLUSH_LINE ((unsigned int) p_rx_curr_desc, 0);
2960 /* DP(printf("\nETH_END_OF_JOB ...\n"));*/
2961 return ETH_END_OF_JOB;
2964 p_pkt_info->byte_cnt = (p_rx_curr_desc->byte_cnt) - RX_BUF_OFFSET;
2965 p_pkt_info->cmd_sts = command_status;
2966 p_pkt_info->buf_ptr = (p_rx_curr_desc->buf_ptr) + RX_BUF_OFFSET;
2967 p_pkt_info->return_info = p_rx_curr_desc->return_info;
2968 p_pkt_info->l4i_chk = p_rx_curr_desc->buf_size; /* IP fragment indicator */
2970 /* Clean the return info field to indicate that the packet has been */
2971 /* moved to the upper layers */
2972 p_rx_curr_desc->return_info = 0;
2974 /* Update 'curr' in data structure */
2975 CURR_RFD_SET (p_rx_next_curr_desc, rx_queue);
2977 /* Rx descriptors resource exhausted. Set the Rx ring resource error flag */
2978 if (p_rx_next_curr_desc == p_rx_used_desc)
2979 p_eth_port_ctrl->rx_resource_err[rx_queue] = true;
2981 D_CACHE_FLUSH_LINE ((unsigned int) p_rx_curr_desc, 0);
2986 /*******************************************************************************
2987 * eth_rx_return_buff - Returns a Rx buffer back to the Rx ring.
2990 * This routine returns a Rx buffer back to the Rx ring. It retrieves the
2991 * next 'used' descriptor and attached the returned buffer to it.
2992 * In case the Rx ring was in "resource error" condition, where there are
2993 * no available Rx resources, the function resets the resource error flag.
2996 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2997 * ETH_QUEUE rx_queue Number of Rx queue.
2998 * PKT_INFO *p_pkt_info Information on the returned buffer.
3001 * New available Rx resource in Rx descriptor ring.
3004 * ETH_ERROR in case the routine can not access Rx desc ring.
3007 *******************************************************************************/
3008 static ETH_FUNC_RET_STATUS eth_rx_return_buff (ETH_PORT_INFO *
3011 PKT_INFO * p_pkt_info)
3013 volatile ETH_RX_DESC *p_used_rx_desc; /* Where to return Rx resource */
3015 /* Get 'used' Rx descriptor */
3016 USED_RFD_GET (p_used_rx_desc, rx_queue);
3019 if (p_used_rx_desc == NULL)
3022 p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr;
3023 p_used_rx_desc->return_info = p_pkt_info->return_info;
3024 p_used_rx_desc->byte_cnt = p_pkt_info->byte_cnt;
3025 p_used_rx_desc->buf_size = MV64360_RX_BUFFER_SIZE; /* Reset Buffer size */
3027 /* Flush the write pipe */
3030 /* Return the descriptor to DMA ownership */
3031 p_used_rx_desc->cmd_sts =
3032 ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
3034 /* Flush descriptor and CPU pipe */
3035 D_CACHE_FLUSH_LINE ((unsigned int) p_used_rx_desc, 0);
3038 /* Move the used descriptor pointer to the next descriptor */
3039 USED_RFD_SET (RX_NEXT_DESC_PTR (p_used_rx_desc, rx_queue), rx_queue);
3041 /* Any Rx return cancels the Rx resource error status */
3042 if (p_eth_port_ctrl->rx_resource_err[rx_queue] == true)
3043 p_eth_port_ctrl->rx_resource_err[rx_queue] = false;
3048 /*******************************************************************************
3049 * eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path
3052 * This routine sets the RX coalescing interrupt mechanism parameter.
3053 * This parameter is a timeout counter, that counts in 64 t_clk
3054 * chunks ; that when timeout event occurs a maskable interrupt
3056 * The parameter is calculated using the tClk of the MV-643xx chip
3057 * , and the required delay of the interrupt in usec.
3060 * ETH_PORT eth_port_num Ethernet port number
3061 * unsigned int t_clk t_clk of the MV-643xx chip in HZ units
3062 * unsigned int delay Delay in usec
3065 * Interrupt coalescing mechanism value is set in MV-643xx chip.
3068 * The interrupt coalescing value set in the gigE port.
3070 *******************************************************************************/
3072 static unsigned int eth_port_set_rx_coal (ETH_PORT eth_port_num,
3078 coal = ((t_clk / 1000000) * delay) / 64;
3079 /* Set RX Coalescing mechanism */
3080 MV_REG_WRITE (MV64360_ETH_SDMA_CONFIG_REG (eth_port_num),
3081 ((coal & 0x3fff) << 8) |
3083 (MV64360_ETH_SDMA_CONFIG_REG (eth_port_num))
3089 /*******************************************************************************
3090 * eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path
3093 * This routine sets the TX coalescing interrupt mechanism parameter.
3094 * This parameter is a timeout counter, that counts in 64 t_clk
3095 * chunks ; that when timeout event occurs a maskable interrupt
3097 * The parameter is calculated using the t_cLK frequency of the
3098 * MV-643xx chip and the required delay in the interrupt in uSec
3101 * ETH_PORT eth_port_num Ethernet port number
3102 * unsigned int t_clk t_clk of the MV-643xx chip in HZ units
3103 * unsigned int delay Delay in uSeconds
3106 * Interrupt coalescing mechanism value is set in MV-643xx chip.
3109 * The interrupt coalescing value set in the gigE port.
3111 *******************************************************************************/
3113 static unsigned int eth_port_set_tx_coal (ETH_PORT eth_port_num,
3119 coal = ((t_clk / 1000000) * delay) / 64;
3120 /* Set TX Coalescing mechanism */
3121 MV_REG_WRITE (MV64360_ETH_TX_FIFO_URGENT_THRESHOLD_REG (eth_port_num),
3127 /*******************************************************************************
3128 * eth_b_copy - Copy bytes from source to destination
3131 * This function supports the eight bytes limitation on Tx buffer size.
3132 * The routine will zero eight bytes starting from the destination address
3133 * followed by copying bytes from the source address to the destination.
3136 * unsigned int src_addr 32 bit source address.
3137 * unsigned int dst_addr 32 bit destination address.
3138 * int byte_count Number of bytes to copy.
3146 *******************************************************************************/
3147 static void eth_b_copy (unsigned int src_addr, unsigned int dst_addr,
3150 /* Zero the dst_addr area */
3151 *(unsigned int *) dst_addr = 0x0;
3153 while (byte_count != 0) {
3154 *(char *) dst_addr = *(char *) src_addr;