3 * Ingo Assmus <ingo.assmus@keymile.com>
5 * based on - Driver for MV64360X ethernet ports
6 * Copyright (C) 2002 rabeeh@galileo.co.il
8 * SPDX-License-Identifier: GPL-2.0
12 * mv_eth.c - header file for the polled mode GT ethernet driver
20 /* enable Debug outputs */
31 #undef MV64360_CHECKSUM_OFFLOAD
32 /*************************************************************************
33 **************************************************************************
34 **************************************************************************
35 * The first part is the high level driver of the gigE ethernet ports. *
36 **************************************************************************
37 **************************************************************************
38 *************************************************************************/
40 /* Definition for configuring driver */
41 /* #define UPDATE_STATS_BY_SOFTWARE */
42 #undef MV64360_RX_QUEUE_FILL_ON_TASK
46 #define MAGIC_ETH_RUNNING 8031971
47 #define MV64360_INTERNAL_SRAM_SIZE _256K
48 #define EXTRA_BYTES 32
49 #define WRAP ETH_HLEN + 2 + 4 + 16
50 #define BUFFER_MTU dev->mtu + WRAP
51 #define INT_CAUSE_UNMASK_ALL 0x0007ffff
52 #define INT_CAUSE_UNMASK_ALL_EXT 0x0011ffff
53 #ifdef MV64360_RX_FILL_ON_TASK
54 #define INT_CAUSE_MASK_ALL 0x00000000
55 #define INT_CAUSE_CHECK_BITS INT_CAUSE_UNMASK_ALL
56 #define INT_CAUSE_CHECK_BITS_EXT INT_CAUSE_UNMASK_ALL_EXT
59 /* Read/Write to/from MV64360 internal registers */
60 #define MV_REG_READ(offset) my_le32_to_cpu(* (volatile unsigned int *) (INTERNAL_REG_BASE_ADDR + offset))
61 #define MV_REG_WRITE(offset,data) *(volatile unsigned int *) (INTERNAL_REG_BASE_ADDR + offset) = my_cpu_to_le32 (data)
62 #define MV_SET_REG_BITS(regOffset,bits) ((*((volatile unsigned int*)((INTERNAL_REG_BASE_ADDR) + (regOffset)))) |= ((unsigned int)my_cpu_to_le32(bits)))
63 #define MV_RESET_REG_BITS(regOffset,bits) ((*((volatile unsigned int*)((INTERNAL_REG_BASE_ADDR) + (regOffset)))) &= ~((unsigned int)my_cpu_to_le32(bits)))
65 /* Static function declarations */
66 static int mv64360_eth_real_open (struct eth_device *eth);
67 static int mv64360_eth_real_stop (struct eth_device *eth);
68 static struct net_device_stats *mv64360_eth_get_stats (struct eth_device
70 static void eth_port_init_mac_tables (ETH_PORT eth_port_num);
71 static void mv64360_eth_update_stat (struct eth_device *dev);
72 bool db64360_eth_start (struct eth_device *eth);
73 unsigned int eth_read_mib_counter (ETH_PORT eth_port_num,
74 unsigned int mib_offset);
75 int mv64360_eth_receive (struct eth_device *dev);
77 int mv64360_eth_xmit (struct eth_device *, volatile void *packet, int length);
79 #ifndef UPDATE_STATS_BY_SOFTWARE
80 static void mv64360_eth_print_stat (struct eth_device *dev);
83 extern unsigned int INTERNAL_REG_BASE_ADDR;
85 /*************************************************
86 *Helper functions - used inside the driver only *
87 *************************************************/
89 void print_globals (struct eth_device *dev)
91 printf ("Ethernet PRINT_Globals-Debug function\n");
92 printf ("Base Address for ETH_PORT_INFO: %08x\n",
93 (unsigned int) dev->priv);
94 printf ("Base Address for mv64360_eth_priv: %08x\n",
95 (unsigned int) &(((ETH_PORT_INFO *) dev->priv)->
98 printf ("GT Internal Base Address: %08x\n",
99 INTERNAL_REG_BASE_ADDR);
100 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);
101 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);
102 printf ("Base Address for RX-Buffer: %08x allocated Bytes %d\n",
103 (unsigned int) ((ETH_PORT_INFO *) dev->priv)->
105 (MV64360_RX_QUEUE_SIZE * MV64360_RX_BUFFER_SIZE) + 32);
106 printf ("Base Address for TX-Buffer: %08x allocated Bytes %d\n",
107 (unsigned int) ((ETH_PORT_INFO *) dev->priv)->
109 (MV64360_TX_QUEUE_SIZE * MV64360_TX_BUFFER_SIZE) + 32);
113 #define my_cpu_to_le32(x) my_le32_to_cpu((x))
115 unsigned long my_le32_to_cpu (unsigned long x)
117 return (((x & 0x000000ffU) << 24) |
118 ((x & 0x0000ff00U) << 8) |
119 ((x & 0x00ff0000U) >> 8) | ((x & 0xff000000U) >> 24));
123 /**********************************************************************
124 * mv64360_eth_print_phy_status
126 * Prints gigabit ethenret phy status
128 * Input : pointer to ethernet interface network device structure
130 **********************************************************************/
132 static void mv64360_eth_print_phy_status (struct eth_device *dev)
134 struct mv64360_eth_priv *port_private;
135 unsigned int port_num;
136 ETH_PORT_INFO *ethernet_private = (ETH_PORT_INFO *) dev->priv;
137 unsigned int port_status, phy_reg_data;
140 (struct mv64360_eth_priv *) ethernet_private->port_private;
141 port_num = port_private->port_num;
143 /* Check Link status on phy */
144 eth_port_read_smi_reg (port_num, 1, &phy_reg_data);
145 if (!(phy_reg_data & 0x20)) {
146 printf ("Ethernet port changed link status to DOWN\n");
149 MV_REG_READ (MV64360_ETH_PORT_STATUS_REG (port_num));
150 printf ("Ethernet status port %d: Link up", port_num);
152 (port_status & BIT2) ? "Full Duplex" : "Half Duplex");
153 if (port_status & BIT4)
154 printf (", Speed 1 Gbps");
157 (port_status & BIT5) ? "Speed 100 Mbps" :
163 /**********************************************************************
164 * u-boot entry functions for mv64360_eth
166 **********************************************************************/
167 int db64360_eth_probe (struct eth_device *dev)
169 return ((int) db64360_eth_start (dev));
172 int db64360_eth_poll (struct eth_device *dev)
174 return mv64360_eth_receive (dev);
177 int db64360_eth_transmit(struct eth_device *dev, void *packet, int length)
179 mv64360_eth_xmit (dev, packet, length);
183 void db64360_eth_disable (struct eth_device *dev)
185 mv64360_eth_stop (dev);
189 void mv6436x_eth_initialize (bd_t * bis)
191 struct eth_device *dev;
192 ETH_PORT_INFO *ethernet_private;
193 struct mv64360_eth_priv *port_private;
195 char *s, *e, buf[64];
197 for (devnum = 0; devnum < MV_ETH_DEVS; devnum++) {
198 dev = calloc (sizeof (*dev), 1);
200 printf ("%s: mv_enet%d allocation failure, %s\n",
201 __FUNCTION__, devnum, "eth_device structure");
205 /* must be less than sizeof(dev->name) */
206 sprintf (dev->name, "mv_enet%d", devnum);
209 printf ("Initializing %s\n", dev->name);
212 /* Extract the MAC address from the environment */
226 default: /* this should never happen */
227 printf ("%s: Invalid device number %d\n",
228 __FUNCTION__, devnum);
232 temp = getenv_f(s, buf, sizeof (buf));
233 s = (temp > 0) ? buf : NULL;
236 printf ("Setting MAC %d to %s\n", devnum, s);
238 for (x = 0; x < 6; ++x) {
239 dev->enetaddr[x] = s ? simple_strtoul (s, &e, 16) : 0;
241 s = (*e) ? e + 1 : e;
243 /* ronen - set the MAC addr in the HW */
244 eth_port_uc_addr_set (devnum, dev->enetaddr, 0);
246 dev->init = (void *) db64360_eth_probe;
247 dev->halt = (void *) ethernet_phy_reset;
248 dev->send = (void *) db64360_eth_transmit;
249 dev->recv = (void *) db64360_eth_poll;
252 calloc (sizeof (*ethernet_private), 1);
253 dev->priv = (void *) ethernet_private;
254 if (!ethernet_private) {
255 printf ("%s: %s allocation failure, %s\n",
256 __FUNCTION__, dev->name,
257 "Private Device Structure");
261 /* start with an zeroed ETH_PORT_INFO */
262 memset (ethernet_private, 0, sizeof (ETH_PORT_INFO));
263 memcpy (ethernet_private->port_mac_addr, dev->enetaddr, 6);
265 /* set pointer to memory for stats data structure etc... */
267 calloc (sizeof (*ethernet_private), 1);
268 ethernet_private->port_private = (void *)port_private;
270 printf ("%s: %s allocation failure, %s\n",
271 __FUNCTION__, dev->name,
272 "Port Private Device Structure");
274 free (ethernet_private);
279 port_private->stats =
280 calloc (sizeof (struct net_device_stats), 1);
281 if (!port_private->stats) {
282 printf ("%s: %s allocation failure, %s\n",
283 __FUNCTION__, dev->name,
284 "Net stat Structure");
287 free (ethernet_private);
291 memset (ethernet_private->port_private, 0,
292 sizeof (struct mv64360_eth_priv));
295 ethernet_private->port_num = ETH_0;
298 ethernet_private->port_num = ETH_1;
301 ethernet_private->port_num = ETH_2;
304 printf ("Invalid device number %d\n", devnum);
308 port_private->port_num = devnum;
310 * Read MIB counter on the GT in order to reset them,
311 * then zero all the stats fields in memory
313 mv64360_eth_update_stat (dev);
314 memset (port_private->stats, 0,
315 sizeof (struct net_device_stats));
316 /* Extract the MAC address from the environment */
330 default: /* this should never happen */
331 printf ("%s: Invalid device number %d\n",
332 __FUNCTION__, devnum);
336 temp = getenv_f(s, buf, sizeof (buf));
337 s = (temp > 0) ? buf : NULL;
340 printf ("Setting MAC %d to %s\n", devnum, s);
342 for (x = 0; x < 6; ++x) {
343 dev->enetaddr[x] = s ? simple_strtoul (s, &e, 16) : 0;
345 s = (*e) ? e + 1 : e;
348 DP (printf ("Allocating descriptor and buffer rings\n"));
350 ethernet_private->p_rx_desc_area_base[0] =
351 (ETH_RX_DESC *) memalign (16,
352 RX_DESC_ALIGNED_SIZE *
353 MV64360_RX_QUEUE_SIZE + 1);
354 ethernet_private->p_tx_desc_area_base[0] =
355 (ETH_TX_DESC *) memalign (16,
356 TX_DESC_ALIGNED_SIZE *
357 MV64360_TX_QUEUE_SIZE + 1);
359 ethernet_private->p_rx_buffer_base[0] =
360 (char *) memalign (16,
361 MV64360_RX_QUEUE_SIZE *
362 MV64360_TX_BUFFER_SIZE + 1);
363 ethernet_private->p_tx_buffer_base[0] =
364 (char *) memalign (16,
365 MV64360_RX_QUEUE_SIZE *
366 MV64360_TX_BUFFER_SIZE + 1);
369 /* DEBUG OUTPUT prints adresses of globals */
375 DP (printf ("%s: exit\n", __FUNCTION__));
379 /**********************************************************************
382 * This function is called when openning the network device. The function
383 * should initialize all the hardware, initialize cyclic Rx/Tx
384 * descriptors chain and buffers and allocate an IRQ to the network
387 * Input : a pointer to the network device structure
388 * / / ronen - changed the output to match net/eth.c needs
389 * Output : nonzero of success , zero if fails.
391 **********************************************************************/
393 int mv64360_eth_open (struct eth_device *dev)
395 return (mv64360_eth_real_open (dev));
398 /* Helper function for mv64360_eth_open */
399 static int mv64360_eth_real_open (struct eth_device *dev)
403 ETH_PORT_INFO *ethernet_private;
404 struct mv64360_eth_priv *port_private;
405 unsigned int port_num;
408 ethernet_private = (ETH_PORT_INFO *) dev->priv;
409 /* ronen - when we update the MAC env params we only update dev->enetaddr
410 see ./net/eth.c eth_set_enetaddr() */
411 memcpy (ethernet_private->port_mac_addr, dev->enetaddr, 6);
414 (struct mv64360_eth_priv *) ethernet_private->port_private;
415 port_num = port_private->port_num;
418 MV_REG_WRITE (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG (port_num),
421 /* Clear the ethernet port interrupts */
422 MV_REG_WRITE (MV64360_ETH_INTERRUPT_CAUSE_REG (port_num), 0);
423 MV_REG_WRITE (MV64360_ETH_INTERRUPT_CAUSE_EXTEND_REG (port_num), 0);
425 /* Unmask RX buffer and TX end interrupt */
426 MV_REG_WRITE (MV64360_ETH_INTERRUPT_MASK_REG (port_num),
427 INT_CAUSE_UNMASK_ALL);
429 /* Unmask phy and link status changes interrupts */
430 MV_REG_WRITE (MV64360_ETH_INTERRUPT_EXTEND_MASK_REG (port_num),
431 INT_CAUSE_UNMASK_ALL_EXT);
433 /* Set phy address of the port */
434 ethernet_private->port_phy_addr = 0x8 + port_num;
436 /* Activate the DMA channels etc */
437 eth_port_init (ethernet_private);
440 /* "Allocate" setup TX rings */
442 for (queue = 0; queue < MV64360_TX_QUEUE_NUM; queue++) {
445 port_private->tx_ring_size[queue] = MV64360_TX_QUEUE_SIZE;
446 size = (port_private->tx_ring_size[queue] * TX_DESC_ALIGNED_SIZE); /*size = no of DESCs times DESC-size */
447 ethernet_private->tx_desc_area_size[queue] = size;
449 /* first clear desc area completely */
450 memset ((void *) ethernet_private->p_tx_desc_area_base[queue],
451 0, ethernet_private->tx_desc_area_size[queue]);
453 /* initialize tx desc ring with low level driver */
454 if (ether_init_tx_desc_ring
455 (ethernet_private, ETH_Q0,
456 port_private->tx_ring_size[queue],
457 MV64360_TX_BUFFER_SIZE /* Each Buffer is 1600 Byte */ ,
458 (unsigned int) ethernet_private->
459 p_tx_desc_area_base[queue],
460 (unsigned int) ethernet_private->
461 p_tx_buffer_base[queue]) == false)
462 printf ("### Error initializing TX Ring\n");
465 /* "Allocate" setup RX rings */
466 for (queue = 0; queue < MV64360_RX_QUEUE_NUM; queue++) {
469 /* Meantime RX Ring are fixed - but must be configurable by user */
470 port_private->rx_ring_size[queue] = MV64360_RX_QUEUE_SIZE;
471 size = (port_private->rx_ring_size[queue] *
472 RX_DESC_ALIGNED_SIZE);
473 ethernet_private->rx_desc_area_size[queue] = size;
475 /* first clear desc area completely */
476 memset ((void *) ethernet_private->p_rx_desc_area_base[queue],
477 0, ethernet_private->rx_desc_area_size[queue]);
478 if ((ether_init_rx_desc_ring
479 (ethernet_private, ETH_Q0,
480 port_private->rx_ring_size[queue],
481 MV64360_RX_BUFFER_SIZE /* Each Buffer is 1600 Byte */ ,
482 (unsigned int) ethernet_private->
483 p_rx_desc_area_base[queue],
484 (unsigned int) ethernet_private->
485 p_rx_buffer_base[queue])) == false)
486 printf ("### Error initializing RX Ring\n");
489 eth_port_start (ethernet_private);
491 /* Set maximum receive buffer to 9700 bytes */
492 MV_REG_WRITE (MV64360_ETH_PORT_SERIAL_CONTROL_REG (port_num),
495 (MV64360_ETH_PORT_SERIAL_CONTROL_REG (port_num))
499 * Set ethernet MTU for leaky bucket mechanism to 0 - this will
500 * disable the leaky bucket mechanism .
503 MV_REG_WRITE (MV64360_ETH_MAXIMUM_TRANSMIT_UNIT (port_num), 0);
504 MV_REG_READ (MV64360_ETH_PORT_STATUS_REG (port_num));
506 /* Check Link status on phy */
507 eth_port_read_smi_reg (port_num, 1, &phy_reg_data);
508 if (!(phy_reg_data & 0x20)) {
510 if ((ethernet_phy_reset (port_num)) != true) {
511 printf ("$$ Warnning: No link on port %d \n",
515 eth_port_read_smi_reg (port_num, 1, &phy_reg_data);
516 if (!(phy_reg_data & 0x20)) {
517 printf ("### Error: Phy is not active\n");
522 mv64360_eth_print_phy_status (dev);
524 port_private->eth_running = MAGIC_ETH_RUNNING;
529 static int mv64360_eth_free_tx_rings (struct eth_device *dev)
532 ETH_PORT_INFO *ethernet_private;
533 struct mv64360_eth_priv *port_private;
534 unsigned int port_num;
535 volatile ETH_TX_DESC *p_tx_curr_desc;
537 ethernet_private = (ETH_PORT_INFO *) dev->priv;
539 (struct mv64360_eth_priv *) ethernet_private->port_private;
540 port_num = port_private->port_num;
543 MV_REG_WRITE (MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG (port_num),
547 DP (printf ("Clearing previously allocated TX queues... "));
548 for (queue = 0; queue < MV64360_TX_QUEUE_NUM; queue++) {
549 /* Free on TX rings */
550 for (p_tx_curr_desc =
551 ethernet_private->p_tx_desc_area_base[queue];
552 ((unsigned int) p_tx_curr_desc <= (unsigned int)
553 ethernet_private->p_tx_desc_area_base[queue] +
554 ethernet_private->tx_desc_area_size[queue]);
556 (ETH_TX_DESC *) ((unsigned int) p_tx_curr_desc +
557 TX_DESC_ALIGNED_SIZE)) {
558 /* this is inside for loop */
559 if (p_tx_curr_desc->return_info != 0) {
560 p_tx_curr_desc->return_info = 0;
561 DP (printf ("freed\n"));
564 DP (printf ("Done\n"));
569 static int mv64360_eth_free_rx_rings (struct eth_device *dev)
572 ETH_PORT_INFO *ethernet_private;
573 struct mv64360_eth_priv *port_private;
574 unsigned int port_num;
575 volatile ETH_RX_DESC *p_rx_curr_desc;
577 ethernet_private = (ETH_PORT_INFO *) dev->priv;
579 (struct mv64360_eth_priv *) ethernet_private->port_private;
580 port_num = port_private->port_num;
584 MV_REG_WRITE (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG (port_num),
588 DP (printf ("Clearing previously allocated RX queues... "));
589 for (queue = 0; queue < MV64360_RX_QUEUE_NUM; queue++) {
590 /* Free preallocated skb's on RX rings */
591 for (p_rx_curr_desc =
592 ethernet_private->p_rx_desc_area_base[queue];
593 (((unsigned int) p_rx_curr_desc <
594 ((unsigned int) ethernet_private->
595 p_rx_desc_area_base[queue] +
596 ethernet_private->rx_desc_area_size[queue])));
598 (ETH_RX_DESC *) ((unsigned int) p_rx_curr_desc +
599 RX_DESC_ALIGNED_SIZE)) {
600 if (p_rx_curr_desc->return_info != 0) {
601 p_rx_curr_desc->return_info = 0;
602 DP (printf ("freed\n"));
605 DP (printf ("Done\n"));
610 /**********************************************************************
613 * This function is used when closing the network device.
614 * It updates the hardware,
615 * release all memory that holds buffers and descriptors and release the IRQ.
616 * Input : a pointer to the device structure
617 * Output : zero if success , nonzero if fails
618 *********************************************************************/
620 int mv64360_eth_stop (struct eth_device *dev)
622 /* Disable all gigE address decoder */
623 MV_REG_WRITE (MV64360_ETH_BASE_ADDR_ENABLE_REG, 0x3f);
624 DP (printf ("%s Ethernet stop called ... \n", __FUNCTION__));
625 mv64360_eth_real_stop (dev);
630 /* Helper function for mv64360_eth_stop */
632 static int mv64360_eth_real_stop (struct eth_device *dev)
634 ETH_PORT_INFO *ethernet_private;
635 struct mv64360_eth_priv *port_private;
636 unsigned int port_num;
638 ethernet_private = (ETH_PORT_INFO *) dev->priv;
640 (struct mv64360_eth_priv *) ethernet_private->port_private;
641 port_num = port_private->port_num;
644 mv64360_eth_free_tx_rings (dev);
645 mv64360_eth_free_rx_rings (dev);
647 eth_port_reset (ethernet_private->port_num);
648 /* Disable ethernet port interrupts */
649 MV_REG_WRITE (MV64360_ETH_INTERRUPT_CAUSE_REG (port_num), 0);
650 MV_REG_WRITE (MV64360_ETH_INTERRUPT_CAUSE_EXTEND_REG (port_num), 0);
651 /* Mask RX buffer and TX end interrupt */
652 MV_REG_WRITE (MV64360_ETH_INTERRUPT_MASK_REG (port_num), 0);
653 /* Mask phy and link status changes interrupts */
654 MV_REG_WRITE (MV64360_ETH_INTERRUPT_EXTEND_MASK_REG (port_num), 0);
655 MV_RESET_REG_BITS (MV64360_CPU_INTERRUPT0_MASK_HIGH,
657 /* Print Network statistics */
658 #ifndef UPDATE_STATS_BY_SOFTWARE
660 * Print statistics (only if ethernet is running),
661 * then zero all the stats fields in memory
663 if (port_private->eth_running == MAGIC_ETH_RUNNING) {
664 port_private->eth_running = 0;
665 mv64360_eth_print_stat (dev);
667 memset (port_private->stats, 0, sizeof (struct net_device_stats));
669 DP (printf ("\nEthernet stopped ... \n"));
674 /**********************************************************************
675 * mv64360_eth_start_xmit
677 * This function is queues a packet in the Tx descriptor for
680 * Input : skb - a pointer to socket buffer
681 * dev - a pointer to the required port
683 * Output : zero upon success
684 **********************************************************************/
686 int mv64360_eth_xmit (struct eth_device *dev, volatile void *dataPtr,
689 ETH_PORT_INFO *ethernet_private;
690 struct mv64360_eth_priv *port_private;
692 ETH_FUNC_RET_STATUS status;
693 struct net_device_stats *stats;
694 ETH_FUNC_RET_STATUS release_result;
696 ethernet_private = (ETH_PORT_INFO *) dev->priv;
698 (struct mv64360_eth_priv *) ethernet_private->port_private;
700 stats = port_private->stats;
702 /* Update packet info data structure */
703 pkt_info.cmd_sts = ETH_TX_FIRST_DESC | ETH_TX_LAST_DESC; /* DMA owned, first last */
704 pkt_info.byte_cnt = dataSize;
705 pkt_info.buf_ptr = (unsigned int) dataPtr;
706 pkt_info.return_info = 0;
708 status = eth_port_send (ethernet_private, ETH_Q0, &pkt_info);
709 if ((status == ETH_ERROR) || (status == ETH_QUEUE_FULL)) {
710 printf ("Error on transmitting packet ..");
711 if (status == ETH_QUEUE_FULL)
712 printf ("ETH Queue is full. \n");
713 if (status == ETH_QUEUE_LAST_RESOURCE)
714 printf ("ETH Queue: using last available resource. \n");
718 /* Update statistics and start of transmittion time */
719 stats->tx_bytes += dataSize;
722 /* Check if packet(s) is(are) transmitted correctly (release everything) */
725 eth_tx_return_desc (ethernet_private, ETH_Q0,
727 switch (release_result) {
729 DP (printf ("descriptor released\n"));
730 if (pkt_info.cmd_sts & BIT0) {
731 printf ("Error in TX\n");
737 DP (printf ("transmission still in process\n"));
741 printf ("routine can not access Tx desc ring\n");
745 DP (printf ("the routine has nothing to release\n"));
747 default: /* should not happen */
750 } while (release_result == ETH_OK);
753 return 0; /* success */
755 return 1; /* Failed - higher layers will free the skb */
758 /**********************************************************************
759 * mv64360_eth_receive
761 * This function is forward packets that are received from the port's
762 * queues toward kernel core or FastRoute them to another interface.
764 * Input : dev - a pointer to the required interface
765 * max - maximum number to receive (0 means unlimted)
767 * Output : number of served packets
768 **********************************************************************/
770 int mv64360_eth_receive (struct eth_device *dev)
772 ETH_PORT_INFO *ethernet_private;
773 struct mv64360_eth_priv *port_private;
775 struct net_device_stats *stats;
778 ethernet_private = (ETH_PORT_INFO *) dev->priv;
780 (struct mv64360_eth_priv *) ethernet_private->port_private;
781 stats = port_private->stats;
783 while ((eth_port_receive (ethernet_private, ETH_Q0, &pkt_info) ==
787 if (pkt_info.byte_cnt != 0) {
788 printf ("%s: Received %d byte Packet @ 0x%x\n",
789 __FUNCTION__, pkt_info.byte_cnt,
793 /* Update statistics. Note byte count includes 4 byte CRC count */
795 stats->rx_bytes += pkt_info.byte_cnt;
798 * In case received a packet without first / last bits on OR the error
799 * summary bit is on, the packets needs to be dropeed.
802 cmd_sts & (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) !=
803 (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC))
804 || (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)) {
807 printf ("Received packet spread on multiple descriptors\n");
809 /* Is this caused by an error ? */
810 if (pkt_info.cmd_sts & ETH_ERROR_SUMMARY) {
814 /* free these descriptors again without forwarding them to the higher layers */
815 pkt_info.buf_ptr &= ~0x7; /* realign buffer again */
816 pkt_info.byte_cnt = 0x0000; /* Reset Byte count */
818 if (eth_rx_return_buff
819 (ethernet_private, ETH_Q0, &pkt_info) != ETH_OK) {
820 printf ("Error while returning the RX Desc to Ring\n");
822 DP (printf ("RX Desc returned to Ring\n"));
824 /* /free these descriptors again */
827 /* !!! call higher layer processing */
829 printf ("\nNow send it to upper layer protocols (NetReceive) ...\n");
831 /* let the upper layer handle the packet */
832 NetReceive ((uchar *) pkt_info.buf_ptr,
833 (int) pkt_info.byte_cnt);
835 /* **************************************************************** */
836 /* free descriptor */
837 pkt_info.buf_ptr &= ~0x7; /* realign buffer again */
838 pkt_info.byte_cnt = 0x0000; /* Reset Byte count */
840 ("RX: pkt_info.buf_ptr = %x\n",
842 if (eth_rx_return_buff
843 (ethernet_private, ETH_Q0, &pkt_info) != ETH_OK) {
844 printf ("Error while returning the RX Desc to Ring\n");
846 DP (printf ("RX Desc returned to Ring\n"));
849 /* **************************************************************** */
853 mv64360_eth_get_stats (dev); /* update statistics */
857 /**********************************************************************
858 * mv64360_eth_get_stats
860 * Returns a pointer to the interface statistics.
862 * Input : dev - a pointer to the required interface
864 * Output : a pointer to the interface's statistics
865 **********************************************************************/
867 static struct net_device_stats *mv64360_eth_get_stats (struct eth_device *dev)
869 ETH_PORT_INFO *ethernet_private;
870 struct mv64360_eth_priv *port_private;
872 ethernet_private = (ETH_PORT_INFO *) dev->priv;
874 (struct mv64360_eth_priv *) ethernet_private->port_private;
876 mv64360_eth_update_stat (dev);
878 return port_private->stats;
882 /**********************************************************************
883 * mv64360_eth_update_stat
885 * Update the statistics structure in the private data structure
887 * Input : pointer to ethernet interface network device structure
889 **********************************************************************/
891 static void mv64360_eth_update_stat (struct eth_device *dev)
893 ETH_PORT_INFO *ethernet_private;
894 struct mv64360_eth_priv *port_private;
895 struct net_device_stats *stats;
897 ethernet_private = (ETH_PORT_INFO *) dev->priv;
899 (struct mv64360_eth_priv *) ethernet_private->port_private;
900 stats = port_private->stats;
902 /* These are false updates */
903 stats->rx_packets += (unsigned long)
904 eth_read_mib_counter (ethernet_private->port_num,
905 ETH_MIB_GOOD_FRAMES_RECEIVED);
906 stats->tx_packets += (unsigned long)
907 eth_read_mib_counter (ethernet_private->port_num,
908 ETH_MIB_GOOD_FRAMES_SENT);
909 stats->rx_bytes += (unsigned long)
910 eth_read_mib_counter (ethernet_private->port_num,
911 ETH_MIB_GOOD_OCTETS_RECEIVED_LOW);
913 * Ideally this should be as follows -
915 * stats->rx_bytes += stats->rx_bytes +
916 * ((unsigned long) ethReadMibCounter (ethernet_private->port_num ,
917 * ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32);
919 * But the unsigned long in PowerPC and MIPS are 32bit. So the next read
920 * is just a dummy read for proper work of the GigE port
922 (void)eth_read_mib_counter (ethernet_private->port_num,
923 ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH);
924 stats->tx_bytes += (unsigned long)
925 eth_read_mib_counter (ethernet_private->port_num,
926 ETH_MIB_GOOD_OCTETS_SENT_LOW);
927 (void)eth_read_mib_counter (ethernet_private->port_num,
928 ETH_MIB_GOOD_OCTETS_SENT_HIGH);
929 stats->rx_errors += (unsigned long)
930 eth_read_mib_counter (ethernet_private->port_num,
931 ETH_MIB_MAC_RECEIVE_ERROR);
933 /* Rx dropped is for received packet with CRC error */
935 (unsigned long) eth_read_mib_counter (ethernet_private->
937 ETH_MIB_BAD_CRC_EVENT);
938 stats->multicast += (unsigned long)
939 eth_read_mib_counter (ethernet_private->port_num,
940 ETH_MIB_MULTICAST_FRAMES_RECEIVED);
942 (unsigned long) eth_read_mib_counter (ethernet_private->
945 (unsigned long) eth_read_mib_counter (ethernet_private->
947 ETH_MIB_LATE_COLLISION);
948 /* detailed rx errors */
949 stats->rx_length_errors +=
950 (unsigned long) eth_read_mib_counter (ethernet_private->
952 ETH_MIB_UNDERSIZE_RECEIVED)
954 (unsigned long) eth_read_mib_counter (ethernet_private->
956 ETH_MIB_OVERSIZE_RECEIVED);
957 /* detailed tx errors */
960 #ifndef UPDATE_STATS_BY_SOFTWARE
961 /**********************************************************************
962 * mv64360_eth_print_stat
964 * Update the statistics structure in the private data structure
966 * Input : pointer to ethernet interface network device structure
968 **********************************************************************/
970 static void mv64360_eth_print_stat (struct eth_device *dev)
972 ETH_PORT_INFO *ethernet_private;
973 struct mv64360_eth_priv *port_private;
974 struct net_device_stats *stats;
976 ethernet_private = (ETH_PORT_INFO *) dev->priv;
978 (struct mv64360_eth_priv *) ethernet_private->port_private;
979 stats = port_private->stats;
981 /* These are false updates */
982 printf ("\n### Network statistics: ###\n");
983 printf ("--------------------------\n");
984 printf (" Packets received: %ld\n", stats->rx_packets);
985 printf (" Packets send: %ld\n", stats->tx_packets);
986 printf (" Received bytes: %ld\n", stats->rx_bytes);
987 printf (" Send bytes: %ld\n", stats->tx_bytes);
988 if (stats->rx_errors != 0)
989 printf (" Rx Errors: %ld\n",
991 if (stats->rx_dropped != 0)
992 printf (" Rx dropped (CRC Errors): %ld\n",
994 if (stats->multicast != 0)
995 printf (" Rx mulicast frames: %ld\n",
997 if (stats->collisions != 0)
998 printf (" No. of collisions: %ld\n",
1000 if (stats->rx_length_errors != 0)
1001 printf (" Rx length errors: %ld\n",
1002 stats->rx_length_errors);
1006 /**************************************************************************
1007 *network_start - Network Kick Off Routine UBoot
1010 **************************************************************************/
1012 bool db64360_eth_start (struct eth_device *dev)
1014 return (mv64360_eth_open (dev)); /* calls real open */
1017 /*************************************************************************
1018 **************************************************************************
1019 **************************************************************************
1020 * The second part is the low level driver of the gigE ethernet ports. *
1021 **************************************************************************
1022 **************************************************************************
1023 *************************************************************************/
1025 * based on Linux code
1026 * arch/powerpc/galileo/EVB64360/mv64360_eth.c - Driver for MV64360X ethernet ports
1027 * Copyright (C) 2002 rabeeh@galileo.co.il
1030 /********************************************************************************
1031 * Marvell's Gigabit Ethernet controller low level driver
1034 * This file introduce low level API to Marvell's Gigabit Ethernet
1035 * controller. This Gigabit Ethernet Controller driver API controls
1036 * 1) Operations (i.e. port init, start, reset etc').
1037 * 2) Data flow (i.e. port send, receive etc').
1038 * Each Gigabit Ethernet port is controlled via ETH_PORT_INFO
1040 * This struct includes user configuration information as well as
1041 * driver internal data needed for its operations.
1043 * Supported Features:
1044 * - This low level driver is OS independent. Allocating memory for
1045 * the descriptor rings and buffers are not within the scope of
1047 * - The user is free from Rx/Tx queue managing.
1048 * - This low level driver introduce functionality API that enable
1049 * the to operate Marvell's Gigabit Ethernet Controller in a
1051 * - Simple Gigabit Ethernet port operation API.
1052 * - Simple Gigabit Ethernet port data flow API.
1053 * - Data flow and operation API support per queue functionality.
1054 * - Support cached descriptors for better performance.
1055 * - Enable access to all four DRAM banks and internal SRAM memory
1057 * - PHY access and control API.
1058 * - Port control register configuration API.
1059 * - Full control over Unicast and Multicast MAC configurations.
1063 * Initialization phase
1064 * This phase complete the initialization of the ETH_PORT_INFO
1066 * User information regarding port configuration has to be set
1067 * prior to calling the port initialization routine. For example,
1068 * the user has to assign the port_phy_addr field which is board
1069 * depended parameter.
1070 * In this phase any port Tx/Rx activity is halted, MIB counters
1071 * are cleared, PHY address is set according to user parameter and
1072 * access to DRAM and internal SRAM memory spaces.
1074 * Driver ring initialization
1075 * Allocating memory for the descriptor rings and buffers is not
1076 * within the scope of this driver. Thus, the user is required to
1077 * allocate memory for the descriptors ring and buffers. Those
1078 * memory parameters are used by the Rx and Tx ring initialization
1079 * routines in order to curve the descriptor linked list in a form
1081 * Note: Pay special attention to alignment issues when using
1082 * cached descriptors/buffers. In this phase the driver store
1083 * information in the ETH_PORT_INFO struct regarding each queue
1087 * This phase prepares the Ethernet port for Rx and Tx activity.
1088 * It uses the information stored in the ETH_PORT_INFO struct to
1089 * initialize the various port registers.
1092 * All packet references to/from the driver are done using PKT_INFO
1094 * This struct is a unified struct used with Rx and Tx operations.
1095 * This way the user is not required to be familiar with neither
1096 * Tx nor Rx descriptors structures.
1097 * The driver's descriptors rings are management by indexes.
1098 * Those indexes controls the ring resources and used to indicate
1099 * a SW resource error:
1101 * This index points to the current available resource for use. For
1102 * example in Rx process this index will point to the descriptor
1103 * that will be passed to the user upon calling the receive routine.
1104 * In Tx process, this index will point to the descriptor
1105 * that will be assigned with the user packet info and transmitted.
1107 * This index points to the descriptor that need to restore its
1108 * resources. For example in Rx process, using the Rx buffer return
1109 * API will attach the buffer returned in packet info to the
1110 * descriptor pointed by 'used'. In Tx process, using the Tx
1111 * descriptor return will merely return the user packet info with
1112 * the command status of the transmitted buffer pointed by the
1113 * 'used' index. Nevertheless, it is essential to use this routine
1114 * to update the 'used' index.
1116 * This index supports Tx Scatter-Gather. It points to the first
1117 * descriptor of a packet assembled of multiple buffers. For example
1118 * when in middle of Such packet we have a Tx resource error the
1119 * 'curr' index get the value of 'first' to indicate that the ring
1120 * returned to its state before trying to transmit this packet.
1122 * Receive operation:
1123 * The eth_port_receive API set the packet information struct,
1124 * passed by the caller, with received information from the
1125 * 'current' SDMA descriptor.
1126 * It is the user responsibility to return this resource back
1127 * to the Rx descriptor ring to enable the reuse of this source.
1128 * Return Rx resource is done using the eth_rx_return_buff API.
1130 * Transmit operation:
1131 * The eth_port_send API supports Scatter-Gather which enables to
1132 * send a packet spanned over multiple buffers. This means that
1133 * for each packet info structure given by the user and put into
1134 * the Tx descriptors ring, will be transmitted only if the 'LAST'
1135 * bit will be set in the packet info command status field. This
1136 * API also consider restriction regarding buffer alignments and
1138 * The user must return a Tx resource after ensuring the buffer
1139 * has been transmitted to enable the Tx ring indexes to update.
1142 * This device is on-board. No jumper diagram is necessary.
1144 * EXTERNAL INTERFACE
1146 * Prior to calling the initialization routine eth_port_init() the user
1147 * must set the following fields under ETH_PORT_INFO struct:
1148 * port_num User Ethernet port number.
1149 * port_phy_addr User PHY address of Ethernet port.
1150 * port_mac_addr[6] User defined port MAC address.
1151 * port_config User port configuration value.
1152 * port_config_extend User port config extend value.
1153 * port_sdma_config User port SDMA config value.
1154 * port_serial_control User port serial control value.
1155 * *port_virt_to_phys () User function to cast virtual addr to CPU bus addr.
1156 * *port_private User scratch pad for user specific data structures.
1158 * This driver introduce a set of default values:
1159 * PORT_CONFIG_VALUE Default port configuration value
1160 * PORT_CONFIG_EXTEND_VALUE Default port extend configuration value
1161 * PORT_SDMA_CONFIG_VALUE Default sdma control value
1162 * PORT_SERIAL_CONTROL_VALUE Default port serial control value
1164 * This driver data flow is done using the PKT_INFO struct which is
1165 * a unified struct for Rx and Tx operations:
1166 * byte_cnt Tx/Rx descriptor buffer byte count.
1167 * l4i_chk CPU provided TCP Checksum. For Tx operation only.
1168 * cmd_sts Tx/Rx descriptor command status.
1169 * buf_ptr Tx/Rx descriptor buffer pointer.
1170 * return_info Tx/Rx user resource return information.
1173 * EXTERNAL SUPPORT REQUIREMENTS
1175 * This driver requires the following external support:
1177 * D_CACHE_FLUSH_LINE (address, address offset)
1179 * This macro applies assembly code to flush and invalidate cache
1181 * address - address base.
1182 * address offset - address offset
1187 * This macro applies assembly code to flush the CPU pipeline.
1189 *******************************************************************************/
1193 /* SDMA command macros */
1194 #define ETH_ENABLE_TX_QUEUE(tx_queue, eth_port) \
1195 MV_REG_WRITE(MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG(eth_port), (1 << tx_queue))
1197 #define ETH_DISABLE_TX_QUEUE(tx_queue, eth_port) \
1198 MV_REG_WRITE(MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG(eth_port),\
1199 (1 << (8 + tx_queue)))
1201 #define ETH_ENABLE_RX_QUEUE(rx_queue, eth_port) \
1202 MV_REG_WRITE(MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG(eth_port), (1 << rx_queue))
1204 #define ETH_DISABLE_RX_QUEUE(rx_queue, eth_port) \
1205 MV_REG_WRITE(MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG(eth_port), (1 << (8 + rx_queue)))
1207 #define CURR_RFD_GET(p_curr_desc, queue) \
1208 ((p_curr_desc) = p_eth_port_ctrl->p_rx_curr_desc_q[queue])
1210 #define CURR_RFD_SET(p_curr_desc, queue) \
1211 (p_eth_port_ctrl->p_rx_curr_desc_q[queue] = (p_curr_desc))
1213 #define USED_RFD_GET(p_used_desc, queue) \
1214 ((p_used_desc) = p_eth_port_ctrl->p_rx_used_desc_q[queue])
1216 #define USED_RFD_SET(p_used_desc, queue)\
1217 (p_eth_port_ctrl->p_rx_used_desc_q[queue] = (p_used_desc))
1220 #define CURR_TFD_GET(p_curr_desc, queue) \
1221 ((p_curr_desc) = p_eth_port_ctrl->p_tx_curr_desc_q[queue])
1223 #define CURR_TFD_SET(p_curr_desc, queue) \
1224 (p_eth_port_ctrl->p_tx_curr_desc_q[queue] = (p_curr_desc))
1226 #define USED_TFD_GET(p_used_desc, queue) \
1227 ((p_used_desc) = p_eth_port_ctrl->p_tx_used_desc_q[queue])
1229 #define USED_TFD_SET(p_used_desc, queue) \
1230 (p_eth_port_ctrl->p_tx_used_desc_q[queue] = (p_used_desc))
1232 #define FIRST_TFD_GET(p_first_desc, queue) \
1233 ((p_first_desc) = p_eth_port_ctrl->p_tx_first_desc_q[queue])
1235 #define FIRST_TFD_SET(p_first_desc, queue) \
1236 (p_eth_port_ctrl->p_tx_first_desc_q[queue] = (p_first_desc))
1239 /* Macros that save access to desc in order to find next desc pointer */
1240 #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])
1242 #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])
1244 #define LINK_UP_TIMEOUT 100000
1245 #define PHY_BUSY_TIMEOUT 10000000
1250 static void ethernet_phy_set (ETH_PORT eth_port_num, int phy_addr);
1251 static int ethernet_phy_get (ETH_PORT eth_port_num);
1253 /* Ethernet Port routines */
1254 static void eth_set_access_control (ETH_PORT eth_port_num,
1255 ETH_WIN_PARAM * param);
1256 static bool eth_port_uc_addr (ETH_PORT eth_port_num, unsigned char uc_nibble,
1257 ETH_QUEUE queue, int option);
1259 static bool eth_port_smc_addr (ETH_PORT eth_port_num,
1260 unsigned char mc_byte,
1261 ETH_QUEUE queue, int option);
1262 static bool eth_port_omc_addr (ETH_PORT eth_port_num,
1264 ETH_QUEUE queue, int option);
1267 static void eth_b_copy (unsigned int src_addr, unsigned int dst_addr,
1270 void eth_dbg (ETH_PORT_INFO * p_eth_port_ctrl);
1273 typedef enum _memory_bank { BANK0, BANK1, BANK2, BANK3 } MEMORY_BANK;
1274 u32 mv_get_dram_bank_base_addr (MEMORY_BANK bank)
1277 u32 enable = MV_REG_READ (MV64360_BASE_ADDR_ENABLE);
1279 if (enable & (1 << bank))
1282 result = MV_REG_READ (MV64360_CS_0_BASE_ADDR);
1284 result = MV_REG_READ (MV64360_CS_1_BASE_ADDR);
1286 result = MV_REG_READ (MV64360_CS_2_BASE_ADDR);
1288 result = MV_REG_READ (MV64360_CS_3_BASE_ADDR);
1289 result &= 0x0000ffff;
1290 result = result << 16;
1294 u32 mv_get_dram_bank_size (MEMORY_BANK bank)
1297 u32 enable = MV_REG_READ (MV64360_BASE_ADDR_ENABLE);
1299 if (enable & (1 << bank))
1302 result = MV_REG_READ (MV64360_CS_0_SIZE);
1304 result = MV_REG_READ (MV64360_CS_1_SIZE);
1306 result = MV_REG_READ (MV64360_CS_2_SIZE);
1308 result = MV_REG_READ (MV64360_CS_3_SIZE);
1310 result &= 0x0000ffff;
1311 result = result << 16;
1315 u32 mv_get_internal_sram_base (void)
1319 result = MV_REG_READ (MV64360_INTEGRATED_SRAM_BASE_ADDR);
1320 result &= 0x0000ffff;
1321 result = result << 16;
1325 /*******************************************************************************
1326 * eth_port_init - Initialize the Ethernet port driver
1329 * This function prepares the ethernet port to start its activity:
1330 * 1) Completes the ethernet port driver struct initialization toward port
1332 * 2) Resets the device to a quiescent state in case of warm reboot.
1333 * 3) Enable SDMA access to all four DRAM banks as well as internal SRAM.
1334 * 4) Clean MAC tables. The reset status of those tables is unknown.
1335 * 5) Set PHY address.
1336 * Note: Call this routine prior to eth_port_start routine and after setting
1337 * user values in the user fields of Ethernet port control struct (i.e.
1341 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet port control struct
1349 *******************************************************************************/
1350 static void eth_port_init (ETH_PORT_INFO * p_eth_port_ctrl)
1353 ETH_WIN_PARAM win_param;
1355 p_eth_port_ctrl->port_config = PORT_CONFIG_VALUE;
1356 p_eth_port_ctrl->port_config_extend = PORT_CONFIG_EXTEND_VALUE;
1357 p_eth_port_ctrl->port_sdma_config = PORT_SDMA_CONFIG_VALUE;
1358 p_eth_port_ctrl->port_serial_control = PORT_SERIAL_CONTROL_VALUE;
1360 p_eth_port_ctrl->port_rx_queue_command = 0;
1361 p_eth_port_ctrl->port_tx_queue_command = 0;
1363 /* Zero out SW structs */
1364 for (queue = 0; queue < MAX_RX_QUEUE_NUM; queue++) {
1365 CURR_RFD_SET ((ETH_RX_DESC *) 0x00000000, queue);
1366 USED_RFD_SET ((ETH_RX_DESC *) 0x00000000, queue);
1367 p_eth_port_ctrl->rx_resource_err[queue] = false;
1370 for (queue = 0; queue < MAX_TX_QUEUE_NUM; queue++) {
1371 CURR_TFD_SET ((ETH_TX_DESC *) 0x00000000, queue);
1372 USED_TFD_SET ((ETH_TX_DESC *) 0x00000000, queue);
1373 FIRST_TFD_SET ((ETH_TX_DESC *) 0x00000000, queue);
1374 p_eth_port_ctrl->tx_resource_err[queue] = false;
1377 eth_port_reset (p_eth_port_ctrl->port_num);
1379 /* Set access parameters for DRAM bank 0 */
1380 win_param.win = ETH_WIN0; /* Use Ethernet window 0 */
1381 win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */
1382 win_param.attributes = EBAR_ATTR_DRAM_CS0; /* Enable DRAM bank */
1383 #ifndef CONFIG_NOT_COHERENT_CACHE
1384 win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB;
1386 win_param.high_addr = 0;
1388 win_param.base_addr = mv_get_dram_bank_base_addr (BANK0);
1389 win_param.size = mv_get_dram_bank_size (BANK0); /* Get bank size */
1390 if (win_param.size == 0)
1391 win_param.enable = 0;
1393 win_param.enable = 1; /* Enable the access */
1394 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1396 /* Set the access control for address window (EPAPR) READ & WRITE */
1397 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1399 /* Set access parameters for DRAM bank 1 */
1400 win_param.win = ETH_WIN1; /* Use Ethernet window 1 */
1401 win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */
1402 win_param.attributes = EBAR_ATTR_DRAM_CS1; /* Enable DRAM bank */
1403 #ifndef CONFIG_NOT_COHERENT_CACHE
1404 win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB;
1406 win_param.high_addr = 0;
1408 win_param.base_addr = mv_get_dram_bank_base_addr (BANK1);
1409 win_param.size = mv_get_dram_bank_size (BANK1); /* Get bank size */
1410 if (win_param.size == 0)
1411 win_param.enable = 0;
1413 win_param.enable = 1; /* Enable the access */
1414 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1416 /* Set the access control for address window (EPAPR) READ & WRITE */
1417 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1419 /* Set access parameters for DRAM bank 2 */
1420 win_param.win = ETH_WIN2; /* Use Ethernet window 2 */
1421 win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */
1422 win_param.attributes = EBAR_ATTR_DRAM_CS2; /* Enable DRAM bank */
1423 #ifndef CONFIG_NOT_COHERENT_CACHE
1424 win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB;
1426 win_param.high_addr = 0;
1428 win_param.base_addr = mv_get_dram_bank_base_addr (BANK2);
1429 win_param.size = mv_get_dram_bank_size (BANK2); /* Get bank size */
1430 if (win_param.size == 0)
1431 win_param.enable = 0;
1433 win_param.enable = 1; /* Enable the access */
1434 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1436 /* Set the access control for address window (EPAPR) READ & WRITE */
1437 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1439 /* Set access parameters for DRAM bank 3 */
1440 win_param.win = ETH_WIN3; /* Use Ethernet window 3 */
1441 win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */
1442 win_param.attributes = EBAR_ATTR_DRAM_CS3; /* Enable DRAM bank */
1443 #ifndef CONFIG_NOT_COHERENT_CACHE
1444 win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB;
1446 win_param.high_addr = 0;
1448 win_param.base_addr = mv_get_dram_bank_base_addr (BANK3);
1449 win_param.size = mv_get_dram_bank_size (BANK3); /* Get bank size */
1450 if (win_param.size == 0)
1451 win_param.enable = 0;
1453 win_param.enable = 1; /* Enable the access */
1454 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1456 /* Set the access control for address window (EPAPR) READ & WRITE */
1457 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1459 /* Set access parameters for Internal SRAM */
1460 win_param.win = ETH_WIN4; /* Use Ethernet window 0 */
1461 win_param.target = EBAR_TARGET_CBS; /* Target - Internal SRAM */
1462 win_param.attributes = EBAR_ATTR_CBS_SRAM | EBAR_ATTR_CBS_SRAM_BLOCK0;
1463 win_param.high_addr = 0;
1464 win_param.base_addr = mv_get_internal_sram_base (); /* Get base addr */
1465 win_param.size = MV64360_INTERNAL_SRAM_SIZE; /* Get bank size */
1466 win_param.enable = 1; /* Enable the access */
1467 win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */
1469 /* Set the access control for address window (EPAPR) READ & WRITE */
1470 eth_set_access_control (p_eth_port_ctrl->port_num, &win_param);
1472 eth_port_init_mac_tables (p_eth_port_ctrl->port_num);
1474 ethernet_phy_set (p_eth_port_ctrl->port_num,
1475 p_eth_port_ctrl->port_phy_addr);
1481 /*******************************************************************************
1482 * eth_port_start - Start the Ethernet port activity.
1485 * This routine prepares the Ethernet port for Rx and Tx activity:
1486 * 1. Initialize Tx and Rx Current Descriptor Pointer for each queue that
1487 * has been initialized a descriptor's ring (using ether_init_tx_desc_ring
1488 * for Tx and ether_init_rx_desc_ring for Rx)
1489 * 2. Initialize and enable the Ethernet configuration port by writing to
1490 * the port's configuration and command registers.
1491 * 3. Initialize and enable the SDMA by writing to the SDMA's
1492 * configuration and command registers.
1493 * After completing these steps, the ethernet port SDMA can starts to
1494 * perform Rx and Tx activities.
1496 * Note: Each Rx and Tx queue descriptor's list must be initialized prior
1497 * to calling this function (use ether_init_tx_desc_ring for Tx queues and
1498 * ether_init_rx_desc_ring for Rx queues).
1501 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet port control struct
1504 * Ethernet port is ready to receive and transmit.
1507 * false if the port PHY is not up.
1510 *******************************************************************************/
1511 static bool eth_port_start (ETH_PORT_INFO * p_eth_port_ctrl)
1514 volatile ETH_TX_DESC *p_tx_curr_desc;
1515 volatile ETH_RX_DESC *p_rx_curr_desc;
1516 unsigned int phy_reg_data;
1517 ETH_PORT eth_port_num = p_eth_port_ctrl->port_num;
1520 /* Assignment of Tx CTRP of given queue */
1521 for (queue = 0; queue < MAX_TX_QUEUE_NUM; queue++) {
1522 CURR_TFD_GET (p_tx_curr_desc, queue);
1523 MV_REG_WRITE ((MV64360_ETH_TX_CURRENT_QUEUE_DESC_PTR_0
1526 ((unsigned int) p_tx_curr_desc));
1530 /* Assignment of Rx CRDP of given queue */
1531 for (queue = 0; queue < MAX_RX_QUEUE_NUM; queue++) {
1532 CURR_RFD_GET (p_rx_curr_desc, queue);
1533 MV_REG_WRITE ((MV64360_ETH_RX_CURRENT_QUEUE_DESC_PTR_0
1536 ((unsigned int) p_rx_curr_desc));
1538 if (p_rx_curr_desc != NULL)
1539 /* Add the assigned Ethernet address to the port's address table */
1540 eth_port_uc_addr_set (p_eth_port_ctrl->port_num,
1541 p_eth_port_ctrl->port_mac_addr,
1545 /* Assign port configuration and command. */
1546 MV_REG_WRITE (MV64360_ETH_PORT_CONFIG_REG (eth_port_num),
1547 p_eth_port_ctrl->port_config);
1549 MV_REG_WRITE (MV64360_ETH_PORT_CONFIG_EXTEND_REG (eth_port_num),
1550 p_eth_port_ctrl->port_config_extend);
1552 MV_REG_WRITE (MV64360_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num),
1553 p_eth_port_ctrl->port_serial_control);
1555 MV_SET_REG_BITS (MV64360_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num),
1556 ETH_SERIAL_PORT_ENABLE);
1558 /* Assign port SDMA configuration */
1559 MV_REG_WRITE (MV64360_ETH_SDMA_CONFIG_REG (eth_port_num),
1560 p_eth_port_ctrl->port_sdma_config);
1562 MV_REG_WRITE (MV64360_ETH_TX_QUEUE_0_TOKEN_BUCKET_COUNT
1563 (eth_port_num), 0x3fffffff);
1564 MV_REG_WRITE (MV64360_ETH_TX_QUEUE_0_TOKEN_BUCKET_CONFIG
1565 (eth_port_num), 0x03fffcff);
1566 /* Turn off the port/queue bandwidth limitation */
1567 MV_REG_WRITE (MV64360_ETH_MAXIMUM_TRANSMIT_UNIT (eth_port_num), 0x0);
1569 /* Enable port Rx. */
1570 MV_REG_WRITE (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG (eth_port_num),
1571 p_eth_port_ctrl->port_rx_queue_command);
1573 /* Check if link is up */
1574 eth_port_read_smi_reg (eth_port_num, 1, &phy_reg_data);
1576 if (!(phy_reg_data & 0x20))
1582 /*******************************************************************************
1583 * eth_port_uc_addr_set - This function Set the port Unicast address.
1586 * This function Set the port Ethernet MAC address.
1589 * ETH_PORT eth_port_num Port number.
1590 * char * p_addr Address to be set
1591 * ETH_QUEUE queue Rx queue number for this MAC address.
1594 * Set MAC address low and high registers. also calls eth_port_uc_addr()
1595 * To set the unicast table with the proper information.
1600 *******************************************************************************/
1601 static void eth_port_uc_addr_set (ETH_PORT eth_port_num,
1602 unsigned char *p_addr, ETH_QUEUE queue)
1607 mac_l = (p_addr[4] << 8) | (p_addr[5]);
1608 mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) |
1609 (p_addr[2] << 8) | (p_addr[3] << 0);
1611 MV_REG_WRITE (MV64360_ETH_MAC_ADDR_LOW (eth_port_num), mac_l);
1612 MV_REG_WRITE (MV64360_ETH_MAC_ADDR_HIGH (eth_port_num), mac_h);
1614 /* Accept frames of this address */
1615 eth_port_uc_addr (eth_port_num, p_addr[5], queue, ACCEPT_MAC_ADDR);
1620 /*******************************************************************************
1621 * eth_port_uc_addr - This function Set the port unicast address table
1624 * This function locates the proper entry in the Unicast table for the
1625 * specified MAC nibble and sets its properties according to function
1629 * ETH_PORT eth_port_num Port number.
1630 * unsigned char uc_nibble Unicast MAC Address last nibble.
1631 * ETH_QUEUE queue Rx queue number for this MAC address.
1632 * int option 0 = Add, 1 = remove address.
1635 * This function add/removes MAC addresses from the port unicast address
1639 * true is output succeeded.
1640 * false if option parameter is invalid.
1642 *******************************************************************************/
1643 static bool eth_port_uc_addr (ETH_PORT eth_port_num,
1644 unsigned char uc_nibble,
1645 ETH_QUEUE queue, int option)
1647 unsigned int unicast_reg;
1648 unsigned int tbl_offset;
1649 unsigned int reg_offset;
1651 /* Locate the Unicast table entry */
1652 uc_nibble = (0xf & uc_nibble);
1653 tbl_offset = (uc_nibble / 4) * 4; /* Register offset from unicast table base */
1654 reg_offset = uc_nibble % 4; /* Entry offset within the above register */
1657 case REJECT_MAC_ADDR:
1658 /* Clear accepts frame bit at specified unicast DA table entry */
1660 MV_REG_READ ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
1664 unicast_reg &= (0x0E << (8 * reg_offset));
1666 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
1668 + tbl_offset), unicast_reg);
1671 case ACCEPT_MAC_ADDR:
1672 /* Set accepts frame bit at unicast DA filter table entry */
1674 MV_REG_READ ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
1678 unicast_reg |= ((0x01 | queue) << (8 * reg_offset));
1680 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
1682 + tbl_offset), unicast_reg);
1693 /*******************************************************************************
1694 * eth_port_mc_addr - Multicast address settings.
1697 * This API controls the MV device MAC multicast support.
1698 * The MV device supports multicast using two tables:
1699 * 1) Special Multicast Table for MAC addresses of the form
1700 * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_fF).
1701 * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
1702 * Table entries in the DA-Filter table.
1703 * In this case, the function calls eth_port_smc_addr() routine to set the
1704 * Special Multicast Table.
1705 * 2) Other Multicast Table for multicast of another type. A CRC-8bit
1706 * is used as an index to the Other Multicast Table entries in the
1708 * In this case, the function calculates the CRC-8bit value and calls
1709 * eth_port_omc_addr() routine to set the Other Multicast Table.
1711 * ETH_PORT eth_port_num Port number.
1712 * unsigned char *p_addr Unicast MAC Address.
1713 * ETH_QUEUE queue Rx queue number for this MAC address.
1714 * int option 0 = Add, 1 = remove address.
1720 * true is output succeeded.
1721 * false if add_address_table_entry( ) failed.
1723 *******************************************************************************/
1724 static void eth_port_mc_addr (ETH_PORT eth_port_num,
1725 unsigned char *p_addr,
1726 ETH_QUEUE queue, int option)
1730 unsigned char crc_result = 0;
1736 if ((p_addr[0] == 0x01) &&
1737 (p_addr[1] == 0x00) &&
1738 (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00))
1740 eth_port_smc_addr (eth_port_num, p_addr[5], queue, option);
1742 /* Calculate CRC-8 out of the given address */
1743 mac_h = (p_addr[0] << 8) | (p_addr[1]);
1744 mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) |
1745 (p_addr[4] << 8) | (p_addr[5] << 0);
1747 for (i = 0; i < 32; i++)
1748 mac_array[i] = (mac_l >> i) & 0x1;
1749 for (i = 32; i < 48; i++)
1750 mac_array[i] = (mac_h >> (i - 32)) & 0x1;
1753 crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^
1754 mac_array[39] ^ mac_array[35] ^ mac_array[34] ^
1755 mac_array[31] ^ mac_array[30] ^ mac_array[28] ^
1756 mac_array[23] ^ mac_array[21] ^ mac_array[19] ^
1757 mac_array[18] ^ mac_array[16] ^ mac_array[14] ^
1758 mac_array[12] ^ mac_array[8] ^ mac_array[7] ^
1759 mac_array[6] ^ mac_array[0];
1761 crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^
1762 mac_array[43] ^ mac_array[41] ^ mac_array[39] ^
1763 mac_array[36] ^ mac_array[34] ^ mac_array[32] ^
1764 mac_array[30] ^ mac_array[29] ^ mac_array[28] ^
1765 mac_array[24] ^ mac_array[23] ^ mac_array[22] ^
1766 mac_array[21] ^ mac_array[20] ^ mac_array[18] ^
1767 mac_array[17] ^ mac_array[16] ^ mac_array[15] ^
1768 mac_array[14] ^ mac_array[13] ^ mac_array[12] ^
1769 mac_array[9] ^ mac_array[6] ^ mac_array[1] ^
1772 crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^
1773 mac_array[43] ^ mac_array[42] ^ mac_array[39] ^
1774 mac_array[37] ^ mac_array[34] ^ mac_array[33] ^
1775 mac_array[29] ^ mac_array[28] ^ mac_array[25] ^
1776 mac_array[24] ^ mac_array[22] ^ mac_array[17] ^
1777 mac_array[15] ^ mac_array[13] ^ mac_array[12] ^
1778 mac_array[10] ^ mac_array[8] ^ mac_array[6] ^
1779 mac_array[2] ^ mac_array[1] ^ mac_array[0];
1781 crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^
1782 mac_array[43] ^ mac_array[40] ^ mac_array[38] ^
1783 mac_array[35] ^ mac_array[34] ^ mac_array[30] ^
1784 mac_array[29] ^ mac_array[26] ^ mac_array[25] ^
1785 mac_array[23] ^ mac_array[18] ^ mac_array[16] ^
1786 mac_array[14] ^ mac_array[13] ^ mac_array[11] ^
1787 mac_array[9] ^ mac_array[7] ^ mac_array[3] ^
1788 mac_array[2] ^ mac_array[1];
1790 crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^
1791 mac_array[41] ^ mac_array[39] ^ mac_array[36] ^
1792 mac_array[35] ^ mac_array[31] ^ mac_array[30] ^
1793 mac_array[27] ^ mac_array[26] ^ mac_array[24] ^
1794 mac_array[19] ^ mac_array[17] ^ mac_array[15] ^
1795 mac_array[14] ^ mac_array[12] ^ mac_array[10] ^
1796 mac_array[8] ^ mac_array[4] ^ mac_array[3] ^
1799 crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^
1800 mac_array[42] ^ mac_array[40] ^ mac_array[37] ^
1801 mac_array[36] ^ mac_array[32] ^ mac_array[31] ^
1802 mac_array[28] ^ mac_array[27] ^ mac_array[25] ^
1803 mac_array[20] ^ mac_array[18] ^ mac_array[16] ^
1804 mac_array[15] ^ mac_array[13] ^ mac_array[11] ^
1805 mac_array[9] ^ mac_array[5] ^ mac_array[4] ^
1808 crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^
1809 mac_array[41] ^ mac_array[38] ^ mac_array[37] ^
1810 mac_array[33] ^ mac_array[32] ^ mac_array[29] ^
1811 mac_array[28] ^ mac_array[26] ^ mac_array[21] ^
1812 mac_array[19] ^ mac_array[17] ^ mac_array[16] ^
1813 mac_array[14] ^ mac_array[12] ^ mac_array[10] ^
1814 mac_array[6] ^ mac_array[5] ^ mac_array[4];
1816 crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^
1817 mac_array[39] ^ mac_array[38] ^ mac_array[34] ^
1818 mac_array[33] ^ mac_array[30] ^ mac_array[29] ^
1819 mac_array[27] ^ mac_array[22] ^ mac_array[20] ^
1820 mac_array[18] ^ mac_array[17] ^ mac_array[15] ^
1821 mac_array[13] ^ mac_array[11] ^ mac_array[7] ^
1822 mac_array[6] ^ mac_array[5];
1824 for (i = 0; i < 8; i++)
1825 crc_result = crc_result | (crc[i] << i);
1827 eth_port_omc_addr (eth_port_num, crc_result, queue, option);
1832 /*******************************************************************************
1833 * eth_port_smc_addr - Special Multicast address settings.
1836 * This routine controls the MV device special MAC multicast support.
1837 * The Special Multicast Table for MAC addresses supports MAC of the form
1838 * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_fF).
1839 * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
1840 * Table entries in the DA-Filter table.
1841 * This function set the Special Multicast Table appropriate entry
1842 * according to the argument given.
1845 * ETH_PORT eth_port_num Port number.
1846 * unsigned char mc_byte Multicast addr last byte (MAC DA[7:0] bits).
1847 * ETH_QUEUE queue Rx queue number for this MAC address.
1848 * int option 0 = Add, 1 = remove address.
1854 * true is output succeeded.
1855 * false if option parameter is invalid.
1857 *******************************************************************************/
1858 static bool eth_port_smc_addr (ETH_PORT eth_port_num,
1859 unsigned char mc_byte,
1860 ETH_QUEUE queue, int option)
1862 unsigned int smc_table_reg;
1863 unsigned int tbl_offset;
1864 unsigned int reg_offset;
1866 /* Locate the SMC table entry */
1867 tbl_offset = (mc_byte / 4) * 4; /* Register offset from SMC table base */
1868 reg_offset = mc_byte % 4; /* Entry offset within the above register */
1872 case REJECT_MAC_ADDR:
1873 /* Clear accepts frame bit at specified Special DA table entry */
1875 MV_REG_READ ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset));
1876 smc_table_reg &= (0x0E << (8 * reg_offset));
1878 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), smc_table_reg);
1881 case ACCEPT_MAC_ADDR:
1882 /* Set accepts frame bit at specified Special DA table entry */
1884 MV_REG_READ ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset));
1885 smc_table_reg |= ((0x01 | queue) << (8 * reg_offset));
1887 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), smc_table_reg);
1896 /*******************************************************************************
1897 * eth_port_omc_addr - Multicast address settings.
1900 * This routine controls the MV device Other MAC multicast support.
1901 * The Other Multicast Table is used for multicast of another type.
1902 * A CRC-8bit is used as an index to the Other Multicast Table entries
1903 * in the DA-Filter table.
1904 * The function gets the CRC-8bit value from the calling routine and
1905 * set the Other Multicast Table appropriate entry according to the
1906 * CRC-8 argument given.
1909 * ETH_PORT eth_port_num Port number.
1910 * unsigned char crc8 A CRC-8bit (Polynomial: x^8+x^2+x^1+1).
1911 * ETH_QUEUE queue Rx queue number for this MAC address.
1912 * int option 0 = Add, 1 = remove address.
1918 * true is output succeeded.
1919 * false if option parameter is invalid.
1921 *******************************************************************************/
1922 static bool eth_port_omc_addr (ETH_PORT eth_port_num,
1924 ETH_QUEUE queue, int option)
1926 unsigned int omc_table_reg;
1927 unsigned int tbl_offset;
1928 unsigned int reg_offset;
1930 /* Locate the OMC table entry */
1931 tbl_offset = (crc8 / 4) * 4; /* Register offset from OMC table base */
1932 reg_offset = crc8 % 4; /* Entry offset within the above register */
1936 case REJECT_MAC_ADDR:
1937 /* Clear accepts frame bit at specified Other DA table entry */
1939 MV_REG_READ ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset));
1940 omc_table_reg &= (0x0E << (8 * reg_offset));
1942 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), omc_table_reg);
1945 case ACCEPT_MAC_ADDR:
1946 /* Set accepts frame bit at specified Other DA table entry */
1948 MV_REG_READ ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset));
1949 omc_table_reg |= ((0x01 | queue) << (8 * reg_offset));
1951 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), omc_table_reg);
1961 /*******************************************************************************
1962 * eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables
1965 * Go through all the DA filter tables (Unicast, Special Multicast & Other
1966 * Multicast) and set each entry to 0.
1969 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
1972 * Multicast and Unicast packets are rejected.
1977 *******************************************************************************/
1978 static void eth_port_init_mac_tables (ETH_PORT eth_port_num)
1982 /* Clear DA filter unicast table (Ex_dFUT) */
1983 for (table_index = 0; table_index <= 0xC; table_index += 4)
1984 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_UNICAST_TABLE_BASE
1985 (eth_port_num) + table_index), 0);
1987 for (table_index = 0; table_index <= 0xFC; table_index += 4) {
1988 /* Clear DA filter special multicast table (Ex_dFSMT) */
1989 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + table_index), 0);
1990 /* Clear DA filter other multicast table (Ex_dFOMT) */
1991 MV_REG_WRITE ((MV64360_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + table_index), 0);
1995 /*******************************************************************************
1996 * eth_clear_mib_counters - Clear all MIB counters
1999 * This function clears all MIB counters of a specific ethernet port.
2000 * A read from the MIB counter will reset the counter.
2003 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2006 * After reading all MIB counters, the counters resets.
2009 * MIB counter value.
2011 *******************************************************************************/
2012 static void eth_clear_mib_counters (ETH_PORT eth_port_num)
2016 /* Perform dummy reads from MIB counters */
2017 for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION;
2019 (void)MV_REG_READ ((MV64360_ETH_MIB_COUNTERS_BASE
2020 (eth_port_num) + i));
2026 /*******************************************************************************
2027 * eth_read_mib_counter - Read a MIB counter
2030 * This function reads a MIB counter of a specific ethernet port.
2031 * NOTE - If read from ETH_MIB_GOOD_OCTETS_RECEIVED_LOW, then the
2032 * following read must be from ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH
2033 * register. The same applies for ETH_MIB_GOOD_OCTETS_SENT_LOW and
2034 * ETH_MIB_GOOD_OCTETS_SENT_HIGH
2037 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2038 * unsigned int mib_offset MIB counter offset (use ETH_MIB_... macros).
2041 * After reading the MIB counter, the counter resets.
2044 * MIB counter value.
2046 *******************************************************************************/
2047 unsigned int eth_read_mib_counter (ETH_PORT eth_port_num,
2048 unsigned int mib_offset)
2050 return (MV_REG_READ (MV64360_ETH_MIB_COUNTERS_BASE (eth_port_num)
2054 /*******************************************************************************
2055 * ethernet_phy_set - Set the ethernet port PHY address.
2058 * This routine set the ethernet port PHY address according to given
2062 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2065 * Set PHY Address Register with given PHY address parameter.
2070 *******************************************************************************/
2071 static void ethernet_phy_set (ETH_PORT eth_port_num, int phy_addr)
2073 unsigned int reg_data;
2075 reg_data = MV_REG_READ (MV64360_ETH_PHY_ADDR_REG);
2077 reg_data &= ~(0x1F << (5 * eth_port_num));
2078 reg_data |= (phy_addr << (5 * eth_port_num));
2080 MV_REG_WRITE (MV64360_ETH_PHY_ADDR_REG, reg_data);
2085 /*******************************************************************************
2086 * ethernet_phy_get - Get the ethernet port PHY address.
2089 * This routine returns the given ethernet port PHY address.
2092 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2100 *******************************************************************************/
2101 static int ethernet_phy_get (ETH_PORT eth_port_num)
2103 unsigned int reg_data;
2105 reg_data = MV_REG_READ (MV64360_ETH_PHY_ADDR_REG);
2107 return ((reg_data >> (5 * eth_port_num)) & 0x1f);
2110 /*******************************************************************************
2111 * ethernet_phy_reset - Reset Ethernet port PHY.
2114 * This routine utilize the SMI interface to reset the ethernet port PHY.
2115 * The routine waits until the link is up again or link up is timeout.
2118 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2121 * The ethernet port PHY renew its link.
2126 *******************************************************************************/
2127 static bool ethernet_phy_reset (ETH_PORT eth_port_num)
2129 unsigned int time_out = 50;
2130 unsigned int phy_reg_data;
2133 eth_port_read_smi_reg (eth_port_num, 0, &phy_reg_data);
2134 phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */
2135 eth_port_write_smi_reg (eth_port_num, 0, phy_reg_data);
2137 /* Poll on the PHY LINK */
2139 eth_port_read_smi_reg (eth_port_num, 1, &phy_reg_data);
2141 if (time_out-- == 0)
2144 while (!(phy_reg_data & 0x20));
2149 /*******************************************************************************
2150 * eth_port_reset - Reset Ethernet port
2153 * This routine resets the chip by aborting any SDMA engine activity and
2154 * clearing the MIB counters. The Receiver and the Transmit unit are in
2155 * idle state after this command is performed and the port is disabled.
2158 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2161 * Channel activity is halted.
2166 *******************************************************************************/
2167 static void eth_port_reset (ETH_PORT eth_port_num)
2169 unsigned int reg_data;
2171 /* Stop Tx port activity. Check port Tx activity. */
2173 MV_REG_READ (MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG
2176 if (reg_data & 0xFF) {
2177 /* Issue stop command for active channels only */
2178 MV_REG_WRITE (MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG
2179 (eth_port_num), (reg_data << 8));
2181 /* Wait for all Tx activity to terminate. */
2183 /* Check port cause register that all Tx queues are stopped */
2186 (MV64360_ETH_TRANSMIT_QUEUE_COMMAND_REG
2189 while (reg_data & 0xFF);
2192 /* Stop Rx port activity. Check port Rx activity. */
2194 MV_REG_READ (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG
2197 if (reg_data & 0xFF) {
2198 /* Issue stop command for active channels only */
2199 MV_REG_WRITE (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG
2200 (eth_port_num), (reg_data << 8));
2202 /* Wait for all Rx activity to terminate. */
2204 /* Check port cause register that all Rx queues are stopped */
2207 (MV64360_ETH_RECEIVE_QUEUE_COMMAND_REG
2210 while (reg_data & 0xFF);
2214 /* Clear all MIB counters */
2215 eth_clear_mib_counters (eth_port_num);
2217 /* Reset the Enable bit in the Configuration Register */
2219 MV_REG_READ (MV64360_ETH_PORT_SERIAL_CONTROL_REG
2221 reg_data &= ~ETH_SERIAL_PORT_ENABLE;
2222 MV_REG_WRITE (MV64360_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num),
2228 #if 0 /* Not needed here */
2229 /*******************************************************************************
2230 * ethernet_set_config_reg - Set specified bits in configuration register.
2233 * This function sets specified bits in the given ethernet
2234 * configuration register.
2237 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2238 * unsigned int value 32 bit value.
2241 * The set bits in the value parameter are set in the configuration
2247 *******************************************************************************/
2248 static void ethernet_set_config_reg (ETH_PORT eth_port_num,
2251 unsigned int eth_config_reg;
2254 MV_REG_READ (MV64360_ETH_PORT_CONFIG_REG (eth_port_num));
2255 eth_config_reg |= value;
2256 MV_REG_WRITE (MV64360_ETH_PORT_CONFIG_REG (eth_port_num),
2264 /*******************************************************************************
2265 * ethernet_reset_config_reg - Reset specified bits in configuration register.
2268 * This function resets specified bits in the given Ethernet
2269 * configuration register.
2272 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2273 * unsigned int value 32 bit value.
2276 * The set bits in the value parameter are reset in the configuration
2282 *******************************************************************************/
2283 static void ethernet_reset_config_reg (ETH_PORT eth_port_num,
2286 unsigned int eth_config_reg;
2288 eth_config_reg = MV_REG_READ (MV64360_ETH_PORT_CONFIG_EXTEND_REG
2290 eth_config_reg &= ~value;
2291 MV_REG_WRITE (MV64360_ETH_PORT_CONFIG_EXTEND_REG (eth_port_num),
2298 #if 0 /* Not needed here */
2299 /*******************************************************************************
2300 * ethernet_get_config_reg - Get the port configuration register
2303 * This function returns the configuration register value of the given
2307 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2313 * Port configuration register value.
2315 *******************************************************************************/
2316 static unsigned int ethernet_get_config_reg (ETH_PORT eth_port_num)
2318 unsigned int eth_config_reg;
2320 eth_config_reg = MV_REG_READ (MV64360_ETH_PORT_CONFIG_EXTEND_REG
2322 return eth_config_reg;
2327 /*******************************************************************************
2328 * eth_port_read_smi_reg - Read PHY registers
2331 * This routine utilize the SMI interface to interact with the PHY in
2332 * order to perform PHY register read.
2335 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2336 * unsigned int phy_reg PHY register address offset.
2337 * unsigned int *value Register value buffer.
2340 * Write the value of a specified PHY register into given buffer.
2343 * false if the PHY is busy or read data is not in valid state.
2346 *******************************************************************************/
2347 static bool eth_port_read_smi_reg (ETH_PORT eth_port_num,
2348 unsigned int phy_reg, unsigned int *value)
2350 unsigned int reg_value;
2351 unsigned int time_out = PHY_BUSY_TIMEOUT;
2354 phy_addr = ethernet_phy_get (eth_port_num);
2355 /* printf(" Phy-Port %d has addess %d \n",eth_port_num, phy_addr );*/
2357 /* first check that it is not busy */
2359 reg_value = MV_REG_READ (MV64360_ETH_SMI_REG);
2360 if (time_out-- == 0) {
2364 while (reg_value & ETH_SMI_BUSY);
2368 MV_REG_WRITE (MV64360_ETH_SMI_REG,
2369 (phy_addr << 16) | (phy_reg << 21) |
2370 ETH_SMI_OPCODE_READ);
2372 time_out = PHY_BUSY_TIMEOUT; /* initialize the time out var again */
2375 reg_value = MV_REG_READ (MV64360_ETH_SMI_REG);
2376 if (time_out-- == 0) {
2380 while ((reg_value & ETH_SMI_READ_VALID) != ETH_SMI_READ_VALID); /* Bit set equ operation done */
2382 /* Wait for the data to update in the SMI register */
2383 #define PHY_UPDATE_TIMEOUT 10000
2384 for (time_out = 0; time_out < PHY_UPDATE_TIMEOUT; time_out++);
2386 reg_value = MV_REG_READ (MV64360_ETH_SMI_REG);
2388 *value = reg_value & 0xffff;
2393 /*******************************************************************************
2394 * eth_port_write_smi_reg - Write to PHY registers
2397 * This routine utilize the SMI interface to interact with the PHY in
2398 * order to perform writes to PHY registers.
2401 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2402 * unsigned int phy_reg PHY register address offset.
2403 * unsigned int value Register value.
2406 * Write the given value to the specified PHY register.
2409 * false if the PHY is busy.
2412 *******************************************************************************/
2413 static bool eth_port_write_smi_reg (ETH_PORT eth_port_num,
2414 unsigned int phy_reg, unsigned int value)
2416 unsigned int reg_value;
2417 unsigned int time_out = PHY_BUSY_TIMEOUT;
2420 phy_addr = ethernet_phy_get (eth_port_num);
2422 /* first check that it is not busy */
2424 reg_value = MV_REG_READ (MV64360_ETH_SMI_REG);
2425 if (time_out-- == 0) {
2429 while (reg_value & ETH_SMI_BUSY);
2432 MV_REG_WRITE (MV64360_ETH_SMI_REG,
2433 (phy_addr << 16) | (phy_reg << 21) |
2434 ETH_SMI_OPCODE_WRITE | (value & 0xffff));
2438 /*******************************************************************************
2439 * eth_set_access_control - Config address decode parameters for Ethernet unit
2442 * This function configures the address decode parameters for the Gigabit
2443 * Ethernet Controller according the given parameters struct.
2446 * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum.
2447 * ETH_WIN_PARAM *param Address decode parameter struct.
2450 * An access window is opened using the given access parameters.
2455 *******************************************************************************/
2456 static void eth_set_access_control (ETH_PORT eth_port_num,
2457 ETH_WIN_PARAM * param)
2459 unsigned int access_prot_reg;
2461 /* Set access control register */
2462 access_prot_reg = MV_REG_READ (MV64360_ETH_ACCESS_PROTECTION_REG
2464 access_prot_reg &= (~(3 << (param->win * 2))); /* clear window permission */
2465 access_prot_reg |= (param->access_ctrl << (param->win * 2));
2466 MV_REG_WRITE (MV64360_ETH_ACCESS_PROTECTION_REG (eth_port_num),
2469 /* Set window Size reg (SR) */
2470 MV_REG_WRITE ((MV64360_ETH_SIZE_REG_0 +
2471 (ETH_SIZE_REG_GAP * param->win)),
2472 (((param->size / 0x10000) - 1) << 16));
2474 /* Set window Base address reg (BA) */
2475 MV_REG_WRITE ((MV64360_ETH_BAR_0 + (ETH_BAR_GAP * param->win)),
2476 (param->target | param->attributes | param->base_addr));
2477 /* High address remap reg (HARR) */
2479 MV_REG_WRITE ((MV64360_ETH_HIGH_ADDR_REMAP_REG_0 +
2480 (ETH_HIGH_ADDR_REMAP_REG_GAP * param->win)),
2483 /* Base address enable reg (BARER) */
2484 if (param->enable == 1)
2485 MV_RESET_REG_BITS (MV64360_ETH_BASE_ADDR_ENABLE_REG,
2488 MV_SET_REG_BITS (MV64360_ETH_BASE_ADDR_ENABLE_REG,
2492 /*******************************************************************************
2493 * ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
2496 * This function prepares a Rx chained list of descriptors and packet
2497 * buffers in a form of a ring. The routine must be called after port
2498 * initialization routine and before port start routine.
2499 * The Ethernet SDMA engine uses CPU bus addresses to access the various
2500 * devices in the system (i.e. DRAM). This function uses the ethernet
2501 * struct 'virtual to physical' routine (set by the user) to set the ring
2502 * with physical addresses.
2505 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2506 * ETH_QUEUE rx_queue Number of Rx queue.
2507 * int rx_desc_num Number of Rx descriptors
2508 * int rx_buff_size Size of Rx buffer
2509 * unsigned int rx_desc_base_addr Rx descriptors memory area base addr.
2510 * unsigned int rx_buff_base_addr Rx buffer memory area base addr.
2513 * The routine updates the Ethernet port control struct with information
2514 * regarding the Rx descriptors and buffers.
2517 * false if the given descriptors memory area is not aligned according to
2518 * Ethernet SDMA specifications.
2521 *******************************************************************************/
2522 static bool ether_init_rx_desc_ring (ETH_PORT_INFO * p_eth_port_ctrl,
2526 unsigned int rx_desc_base_addr,
2527 unsigned int rx_buff_base_addr)
2529 ETH_RX_DESC *p_rx_desc;
2530 ETH_RX_DESC *p_rx_prev_desc; /* pointer to link with the last descriptor */
2531 unsigned int buffer_addr;
2532 int ix; /* a counter */
2535 p_rx_desc = (ETH_RX_DESC *) rx_desc_base_addr;
2536 p_rx_prev_desc = p_rx_desc;
2537 buffer_addr = rx_buff_base_addr;
2539 /* Rx desc Must be 4LW aligned (i.e. Descriptor_Address[3:0]=0000). */
2540 if (rx_buff_base_addr & 0xF)
2543 /* Rx buffers are limited to 64K bytes and Minimum size is 8 bytes */
2544 if ((rx_buff_size < 8) || (rx_buff_size > RX_BUFFER_MAX_SIZE))
2547 /* Rx buffers must be 64-bit aligned. */
2548 if ((rx_buff_base_addr + rx_buff_size) & 0x7)
2551 /* initialize the Rx descriptors ring */
2552 for (ix = 0; ix < rx_desc_num; ix++) {
2553 p_rx_desc->buf_size = rx_buff_size;
2554 p_rx_desc->byte_cnt = 0x0000;
2555 p_rx_desc->cmd_sts =
2556 ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
2557 p_rx_desc->next_desc_ptr =
2558 ((unsigned int) p_rx_desc) + RX_DESC_ALIGNED_SIZE;
2559 p_rx_desc->buf_ptr = buffer_addr;
2560 p_rx_desc->return_info = 0x00000000;
2561 D_CACHE_FLUSH_LINE (p_rx_desc, 0);
2562 buffer_addr += rx_buff_size;
2563 p_rx_prev_desc = p_rx_desc;
2564 p_rx_desc = (ETH_RX_DESC *)
2565 ((unsigned int) p_rx_desc + RX_DESC_ALIGNED_SIZE);
2568 /* Closing Rx descriptors ring */
2569 p_rx_prev_desc->next_desc_ptr = (rx_desc_base_addr);
2570 D_CACHE_FLUSH_LINE (p_rx_prev_desc, 0);
2572 /* Save Rx desc pointer to driver struct. */
2573 CURR_RFD_SET ((ETH_RX_DESC *) rx_desc_base_addr, rx_queue);
2574 USED_RFD_SET ((ETH_RX_DESC *) rx_desc_base_addr, rx_queue);
2576 p_eth_port_ctrl->p_rx_desc_area_base[rx_queue] =
2577 (ETH_RX_DESC *) rx_desc_base_addr;
2578 p_eth_port_ctrl->rx_desc_area_size[rx_queue] =
2579 rx_desc_num * RX_DESC_ALIGNED_SIZE;
2581 p_eth_port_ctrl->port_rx_queue_command |= (1 << rx_queue);
2586 /*******************************************************************************
2587 * ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory.
2590 * This function prepares a Tx chained list of descriptors and packet
2591 * buffers in a form of a ring. The routine must be called after port
2592 * initialization routine and before port start routine.
2593 * The Ethernet SDMA engine uses CPU bus addresses to access the various
2594 * devices in the system (i.e. DRAM). This function uses the ethernet
2595 * struct 'virtual to physical' routine (set by the user) to set the ring
2596 * with physical addresses.
2599 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2600 * ETH_QUEUE tx_queue Number of Tx queue.
2601 * int tx_desc_num Number of Tx descriptors
2602 * int tx_buff_size Size of Tx buffer
2603 * unsigned int tx_desc_base_addr Tx descriptors memory area base addr.
2604 * unsigned int tx_buff_base_addr Tx buffer memory area base addr.
2607 * The routine updates the Ethernet port control struct with information
2608 * regarding the Tx descriptors and buffers.
2611 * false if the given descriptors memory area is not aligned according to
2612 * Ethernet SDMA specifications.
2615 *******************************************************************************/
2616 static bool ether_init_tx_desc_ring (ETH_PORT_INFO * p_eth_port_ctrl,
2620 unsigned int tx_desc_base_addr,
2621 unsigned int tx_buff_base_addr)
2624 ETH_TX_DESC *p_tx_desc;
2625 ETH_TX_DESC *p_tx_prev_desc;
2626 unsigned int buffer_addr;
2627 int ix; /* a counter */
2630 /* save the first desc pointer to link with the last descriptor */
2631 p_tx_desc = (ETH_TX_DESC *) tx_desc_base_addr;
2632 p_tx_prev_desc = p_tx_desc;
2633 buffer_addr = tx_buff_base_addr;
2635 /* Tx desc Must be 4LW aligned (i.e. Descriptor_Address[3:0]=0000). */
2636 if (tx_buff_base_addr & 0xF)
2639 /* Tx buffers are limited to 64K bytes and Minimum size is 8 bytes */
2640 if ((tx_buff_size > TX_BUFFER_MAX_SIZE)
2641 || (tx_buff_size < TX_BUFFER_MIN_SIZE))
2644 /* Initialize the Tx descriptors ring */
2645 for (ix = 0; ix < tx_desc_num; ix++) {
2646 p_tx_desc->byte_cnt = 0x0000;
2647 p_tx_desc->l4i_chk = 0x0000;
2648 p_tx_desc->cmd_sts = 0x00000000;
2649 p_tx_desc->next_desc_ptr =
2650 ((unsigned int) p_tx_desc) + TX_DESC_ALIGNED_SIZE;
2652 p_tx_desc->buf_ptr = buffer_addr;
2653 p_tx_desc->return_info = 0x00000000;
2654 D_CACHE_FLUSH_LINE (p_tx_desc, 0);
2655 buffer_addr += tx_buff_size;
2656 p_tx_prev_desc = p_tx_desc;
2657 p_tx_desc = (ETH_TX_DESC *)
2658 ((unsigned int) p_tx_desc + TX_DESC_ALIGNED_SIZE);
2661 /* Closing Tx descriptors ring */
2662 p_tx_prev_desc->next_desc_ptr = tx_desc_base_addr;
2663 D_CACHE_FLUSH_LINE (p_tx_prev_desc, 0);
2664 /* Set Tx desc pointer in driver struct. */
2665 CURR_TFD_SET ((ETH_TX_DESC *) tx_desc_base_addr, tx_queue);
2666 USED_TFD_SET ((ETH_TX_DESC *) tx_desc_base_addr, tx_queue);
2668 /* Init Tx ring base and size parameters */
2669 p_eth_port_ctrl->p_tx_desc_area_base[tx_queue] =
2670 (ETH_TX_DESC *) tx_desc_base_addr;
2671 p_eth_port_ctrl->tx_desc_area_size[tx_queue] =
2672 (tx_desc_num * TX_DESC_ALIGNED_SIZE);
2674 /* Add the queue to the list of Tx queues of this port */
2675 p_eth_port_ctrl->port_tx_queue_command |= (1 << tx_queue);
2680 /*******************************************************************************
2681 * eth_port_send - Send an Ethernet packet
2684 * This routine send a given packet described by p_pktinfo parameter. It
2685 * supports transmitting of a packet spaned over multiple buffers. The
2686 * routine updates 'curr' and 'first' indexes according to the packet
2687 * segment passed to the routine. In case the packet segment is first,
2688 * the 'first' index is update. In any case, the 'curr' index is updated.
2689 * If the routine get into Tx resource error it assigns 'curr' index as
2690 * 'first'. This way the function can abort Tx process of multiple
2691 * descriptors per packet.
2694 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2695 * ETH_QUEUE tx_queue Number of Tx queue.
2696 * PKT_INFO *p_pkt_info User packet buffer.
2699 * Tx ring 'curr' and 'first' indexes are updated.
2702 * ETH_QUEUE_FULL in case of Tx resource error.
2703 * ETH_ERROR in case the routine can not access Tx desc ring.
2704 * ETH_QUEUE_LAST_RESOURCE if the routine uses the last Tx resource.
2707 *******************************************************************************/
2708 static ETH_FUNC_RET_STATUS eth_port_send (ETH_PORT_INFO * p_eth_port_ctrl,
2710 PKT_INFO * p_pkt_info)
2712 volatile ETH_TX_DESC *p_tx_desc_first;
2713 volatile ETH_TX_DESC *p_tx_desc_curr;
2714 volatile ETH_TX_DESC *p_tx_next_desc_curr;
2715 volatile ETH_TX_DESC *p_tx_desc_used;
2716 unsigned int command_status;
2718 /* Do not process Tx ring in case of Tx ring resource error */
2719 if (p_eth_port_ctrl->tx_resource_err[tx_queue] == true)
2720 return ETH_QUEUE_FULL;
2722 /* Get the Tx Desc ring indexes */
2723 CURR_TFD_GET (p_tx_desc_curr, tx_queue);
2724 USED_TFD_GET (p_tx_desc_used, tx_queue);
2726 if (p_tx_desc_curr == NULL)
2729 /* The following parameters are used to save readings from memory */
2730 p_tx_next_desc_curr = TX_NEXT_DESC_PTR (p_tx_desc_curr, tx_queue);
2731 command_status = p_pkt_info->cmd_sts | ETH_ZERO_PADDING | ETH_GEN_CRC;
2733 if (command_status & (ETH_TX_FIRST_DESC)) {
2734 /* Update first desc */
2735 FIRST_TFD_SET (p_tx_desc_curr, tx_queue);
2736 p_tx_desc_first = p_tx_desc_curr;
2738 FIRST_TFD_GET (p_tx_desc_first, tx_queue);
2739 command_status |= ETH_BUFFER_OWNED_BY_DMA;
2742 /* Buffers with a payload smaller than 8 bytes must be aligned to 64-bit */
2743 /* boundary. We use the memory allocated for Tx descriptor. This memory */
2744 /* located in TX_BUF_OFFSET_IN_DESC offset within the Tx descriptor. */
2745 if (p_pkt_info->byte_cnt <= 8) {
2746 printf ("You have failed in the < 8 bytes errata - fixme\n"); /* RABEEH - TBD */
2749 p_tx_desc_curr->buf_ptr =
2750 (unsigned int) p_tx_desc_curr + TX_BUF_OFFSET_IN_DESC;
2751 eth_b_copy (p_pkt_info->buf_ptr, p_tx_desc_curr->buf_ptr,
2752 p_pkt_info->byte_cnt);
2754 p_tx_desc_curr->buf_ptr = p_pkt_info->buf_ptr;
2756 p_tx_desc_curr->byte_cnt = p_pkt_info->byte_cnt;
2757 p_tx_desc_curr->return_info = p_pkt_info->return_info;
2759 if (p_pkt_info->cmd_sts & (ETH_TX_LAST_DESC)) {
2760 /* Set last desc with DMA ownership and interrupt enable. */
2761 p_tx_desc_curr->cmd_sts = command_status |
2762 ETH_BUFFER_OWNED_BY_DMA | ETH_TX_ENABLE_INTERRUPT;
2764 if (p_tx_desc_curr != p_tx_desc_first)
2765 p_tx_desc_first->cmd_sts |= ETH_BUFFER_OWNED_BY_DMA;
2767 /* Flush CPU pipe */
2769 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_curr, 0);
2770 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_first, 0);
2773 /* Apply send command */
2774 ETH_ENABLE_TX_QUEUE (tx_queue, p_eth_port_ctrl->port_num);
2776 /* Finish Tx packet. Update first desc in case of Tx resource error */
2777 p_tx_desc_first = p_tx_next_desc_curr;
2778 FIRST_TFD_SET (p_tx_desc_first, tx_queue);
2781 p_tx_desc_curr->cmd_sts = command_status;
2782 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_curr, 0);
2785 /* Check for ring index overlap in the Tx desc ring */
2786 if (p_tx_next_desc_curr == p_tx_desc_used) {
2787 /* Update the current descriptor */
2788 CURR_TFD_SET (p_tx_desc_first, tx_queue);
2790 p_eth_port_ctrl->tx_resource_err[tx_queue] = true;
2791 return ETH_QUEUE_LAST_RESOURCE;
2793 /* Update the current descriptor */
2794 CURR_TFD_SET (p_tx_next_desc_curr, tx_queue);
2799 /*******************************************************************************
2800 * eth_tx_return_desc - Free all used Tx descriptors
2803 * This routine returns the transmitted packet information to the caller.
2804 * It uses the 'first' index to support Tx desc return in case a transmit
2805 * of a packet spanned over multiple buffer still in process.
2806 * In case the Tx queue was in "resource error" condition, where there are
2807 * no available Tx resources, the function resets the resource error flag.
2810 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2811 * ETH_QUEUE tx_queue Number of Tx queue.
2812 * PKT_INFO *p_pkt_info User packet buffer.
2815 * Tx ring 'first' and 'used' indexes are updated.
2818 * ETH_ERROR in case the routine can not access Tx desc ring.
2819 * ETH_RETRY in case there is transmission in process.
2820 * ETH_END_OF_JOB if the routine has nothing to release.
2823 *******************************************************************************/
2824 static ETH_FUNC_RET_STATUS eth_tx_return_desc (ETH_PORT_INFO *
2827 PKT_INFO * p_pkt_info)
2829 volatile ETH_TX_DESC *p_tx_desc_used = NULL;
2830 volatile ETH_TX_DESC *p_tx_desc_first = NULL;
2831 unsigned int command_status;
2834 /* Get the Tx Desc ring indexes */
2835 USED_TFD_GET (p_tx_desc_used, tx_queue);
2836 FIRST_TFD_GET (p_tx_desc_first, tx_queue);
2840 if (p_tx_desc_used == NULL)
2843 command_status = p_tx_desc_used->cmd_sts;
2845 /* Still transmitting... */
2846 if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
2847 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_used, 0);
2851 /* Stop release. About to overlap the current available Tx descriptor */
2852 if ((p_tx_desc_used == p_tx_desc_first) &&
2853 (p_eth_port_ctrl->tx_resource_err[tx_queue] == false)) {
2854 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_used, 0);
2855 return ETH_END_OF_JOB;
2858 /* Pass the packet information to the caller */
2859 p_pkt_info->cmd_sts = command_status;
2860 p_pkt_info->return_info = p_tx_desc_used->return_info;
2861 p_tx_desc_used->return_info = 0;
2863 /* Update the next descriptor to release. */
2864 USED_TFD_SET (TX_NEXT_DESC_PTR (p_tx_desc_used, tx_queue), tx_queue);
2866 /* Any Tx return cancels the Tx resource error status */
2867 if (p_eth_port_ctrl->tx_resource_err[tx_queue] == true)
2868 p_eth_port_ctrl->tx_resource_err[tx_queue] = false;
2870 D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_used, 0);
2876 /*******************************************************************************
2877 * eth_port_receive - Get received information from Rx ring.
2880 * This routine returns the received data to the caller. There is no
2881 * data copying during routine operation. All information is returned
2882 * using pointer to packet information struct passed from the caller.
2883 * If the routine exhausts Rx ring resources then the resource error flag
2887 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2888 * ETH_QUEUE rx_queue Number of Rx queue.
2889 * PKT_INFO *p_pkt_info User packet buffer.
2892 * Rx ring current and used indexes are updated.
2895 * ETH_ERROR in case the routine can not access Rx desc ring.
2896 * ETH_QUEUE_FULL if Rx ring resources are exhausted.
2897 * ETH_END_OF_JOB if there is no received data.
2900 *******************************************************************************/
2901 static ETH_FUNC_RET_STATUS eth_port_receive (ETH_PORT_INFO * p_eth_port_ctrl,
2903 PKT_INFO * p_pkt_info)
2905 volatile ETH_RX_DESC *p_rx_curr_desc;
2906 volatile ETH_RX_DESC *p_rx_next_curr_desc;
2907 volatile ETH_RX_DESC *p_rx_used_desc;
2908 unsigned int command_status;
2910 /* Do not process Rx ring in case of Rx ring resource error */
2911 if (p_eth_port_ctrl->rx_resource_err[rx_queue] == true) {
2912 printf ("\nRx Queue is full ...\n");
2913 return ETH_QUEUE_FULL;
2916 /* Get the Rx Desc ring 'curr and 'used' indexes */
2917 CURR_RFD_GET (p_rx_curr_desc, rx_queue);
2918 USED_RFD_GET (p_rx_used_desc, rx_queue);
2921 if (p_rx_curr_desc == NULL)
2924 /* The following parameters are used to save readings from memory */
2925 p_rx_next_curr_desc = RX_NEXT_DESC_PTR (p_rx_curr_desc, rx_queue);
2926 command_status = p_rx_curr_desc->cmd_sts;
2928 /* Nothing to receive... */
2929 if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
2930 /* DP(printf("Rx: command_status: %08x\n", command_status)); */
2931 D_CACHE_FLUSH_LINE ((unsigned int) p_rx_curr_desc, 0);
2932 /* DP(printf("\nETH_END_OF_JOB ...\n"));*/
2933 return ETH_END_OF_JOB;
2936 p_pkt_info->byte_cnt = (p_rx_curr_desc->byte_cnt) - RX_BUF_OFFSET;
2937 p_pkt_info->cmd_sts = command_status;
2938 p_pkt_info->buf_ptr = (p_rx_curr_desc->buf_ptr) + RX_BUF_OFFSET;
2939 p_pkt_info->return_info = p_rx_curr_desc->return_info;
2940 p_pkt_info->l4i_chk = p_rx_curr_desc->buf_size; /* IP fragment indicator */
2942 /* Clean the return info field to indicate that the packet has been */
2943 /* moved to the upper layers */
2944 p_rx_curr_desc->return_info = 0;
2946 /* Update 'curr' in data structure */
2947 CURR_RFD_SET (p_rx_next_curr_desc, rx_queue);
2949 /* Rx descriptors resource exhausted. Set the Rx ring resource error flag */
2950 if (p_rx_next_curr_desc == p_rx_used_desc)
2951 p_eth_port_ctrl->rx_resource_err[rx_queue] = true;
2953 D_CACHE_FLUSH_LINE ((unsigned int) p_rx_curr_desc, 0);
2958 /*******************************************************************************
2959 * eth_rx_return_buff - Returns a Rx buffer back to the Rx ring.
2962 * This routine returns a Rx buffer back to the Rx ring. It retrieves the
2963 * next 'used' descriptor and attached the returned buffer to it.
2964 * In case the Rx ring was in "resource error" condition, where there are
2965 * no available Rx resources, the function resets the resource error flag.
2968 * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct.
2969 * ETH_QUEUE rx_queue Number of Rx queue.
2970 * PKT_INFO *p_pkt_info Information on the returned buffer.
2973 * New available Rx resource in Rx descriptor ring.
2976 * ETH_ERROR in case the routine can not access Rx desc ring.
2979 *******************************************************************************/
2980 static ETH_FUNC_RET_STATUS eth_rx_return_buff (ETH_PORT_INFO *
2983 PKT_INFO * p_pkt_info)
2985 volatile ETH_RX_DESC *p_used_rx_desc; /* Where to return Rx resource */
2987 /* Get 'used' Rx descriptor */
2988 USED_RFD_GET (p_used_rx_desc, rx_queue);
2991 if (p_used_rx_desc == NULL)
2994 p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr;
2995 p_used_rx_desc->return_info = p_pkt_info->return_info;
2996 p_used_rx_desc->byte_cnt = p_pkt_info->byte_cnt;
2997 p_used_rx_desc->buf_size = MV64360_RX_BUFFER_SIZE; /* Reset Buffer size */
2999 /* Flush the write pipe */
3002 /* Return the descriptor to DMA ownership */
3003 p_used_rx_desc->cmd_sts =
3004 ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
3006 /* Flush descriptor and CPU pipe */
3007 D_CACHE_FLUSH_LINE ((unsigned int) p_used_rx_desc, 0);
3010 /* Move the used descriptor pointer to the next descriptor */
3011 USED_RFD_SET (RX_NEXT_DESC_PTR (p_used_rx_desc, rx_queue), rx_queue);
3013 /* Any Rx return cancels the Rx resource error status */
3014 if (p_eth_port_ctrl->rx_resource_err[rx_queue] == true)
3015 p_eth_port_ctrl->rx_resource_err[rx_queue] = false;
3020 /*******************************************************************************
3021 * eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path
3024 * This routine sets the RX coalescing interrupt mechanism parameter.
3025 * This parameter is a timeout counter, that counts in 64 t_clk
3026 * chunks ; that when timeout event occurs a maskable interrupt
3028 * The parameter is calculated using the tClk of the MV-643xx chip
3029 * , and the required delay of the interrupt in usec.
3032 * ETH_PORT eth_port_num Ethernet port number
3033 * unsigned int t_clk t_clk of the MV-643xx chip in HZ units
3034 * unsigned int delay Delay in usec
3037 * Interrupt coalescing mechanism value is set in MV-643xx chip.
3040 * The interrupt coalescing value set in the gigE port.
3042 *******************************************************************************/
3044 static unsigned int eth_port_set_rx_coal (ETH_PORT eth_port_num,
3050 coal = ((t_clk / 1000000) * delay) / 64;
3051 /* Set RX Coalescing mechanism */
3052 MV_REG_WRITE (MV64360_ETH_SDMA_CONFIG_REG (eth_port_num),
3053 ((coal & 0x3fff) << 8) |
3055 (MV64360_ETH_SDMA_CONFIG_REG (eth_port_num))
3061 /*******************************************************************************
3062 * eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path
3065 * This routine sets the TX coalescing interrupt mechanism parameter.
3066 * This parameter is a timeout counter, that counts in 64 t_clk
3067 * chunks ; that when timeout event occurs a maskable interrupt
3069 * The parameter is calculated using the t_cLK frequency of the
3070 * MV-643xx chip and the required delay in the interrupt in uSec
3073 * ETH_PORT eth_port_num Ethernet port number
3074 * unsigned int t_clk t_clk of the MV-643xx chip in HZ units
3075 * unsigned int delay Delay in uSeconds
3078 * Interrupt coalescing mechanism value is set in MV-643xx chip.
3081 * The interrupt coalescing value set in the gigE port.
3083 *******************************************************************************/
3085 static unsigned int eth_port_set_tx_coal (ETH_PORT eth_port_num,
3091 coal = ((t_clk / 1000000) * delay) / 64;
3092 /* Set TX Coalescing mechanism */
3093 MV_REG_WRITE (MV64360_ETH_TX_FIFO_URGENT_THRESHOLD_REG (eth_port_num),
3099 /*******************************************************************************
3100 * eth_b_copy - Copy bytes from source to destination
3103 * This function supports the eight bytes limitation on Tx buffer size.
3104 * The routine will zero eight bytes starting from the destination address
3105 * followed by copying bytes from the source address to the destination.
3108 * unsigned int src_addr 32 bit source address.
3109 * unsigned int dst_addr 32 bit destination address.
3110 * int byte_count Number of bytes to copy.
3118 *******************************************************************************/
3119 static void eth_b_copy (unsigned int src_addr, unsigned int dst_addr,
3122 /* Zero the dst_addr area */
3123 *(unsigned int *) dst_addr = 0x0;
3125 while (byte_count != 0) {
3126 *(char *) dst_addr = *(char *) src_addr;