1 /*-----------------------------------------------------------------------------+
3 * This source code has been made available to you by IBM on an AS-IS
4 * basis. Anyone receiving this source is licensed under IBM
5 * copyrights to use it in any way he or she deems fit, including
6 * copying it, modifying it, compiling it, and redistributing it either
7 * with or without modifications. No license under IBM patents or
8 * patent applications is to be implied by the copyright license.
10 * Any user of this software should understand that IBM cannot provide
11 * technical support for this software and will not be responsible for
12 * any consequences resulting from the use of this software.
14 * Any person who transfers this source code or any derivative work
15 * must include the IBM copyright notice, this paragraph, and the
16 * preceding two paragraphs in the transferred software.
18 * COPYRIGHT I B M CORPORATION 1995
19 * LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
20 *-----------------------------------------------------------------------------*/
21 /*-----------------------------------------------------------------------------+
23 * File Name: enetemac.c
25 * Function: Device driver for the ethernet EMAC3 macro on the 405GP.
31 * Date Description of Change BY
32 * --------- --------------------- ---
33 * 05-May-99 Created MKW
34 * 27-Jun-99 Clean up JWB
35 * 16-Jul-99 Added MAL error recovery and better IP packet handling MKW
36 * 29-Jul-99 Added Full duplex support MKW
37 * 06-Aug-99 Changed names for Mal CR reg MKW
38 * 23-Aug-99 Turned off SYE when running at 10Mbs MKW
39 * 24-Aug-99 Marked descriptor empty after call_xlc MKW
40 * 07-Sep-99 Set MAL RX buffer size reg to ENET_MAX_MTU_ALIGNED / 16 MCG
41 * to avoid chaining maximum sized packets. Push starting
42 * RX descriptor address up to the next cache line boundary.
43 * 16-Jan-00 Added support for booting with IP of 0x0 MKW
44 * 15-Mar-00 Updated enetInit() to enable broadcast addresses in the
45 * EMAC_RXM register. JWB
46 * 12-Mar-01 anne-sophie.harnois@nextream.fr
47 * - Variables are compatible with those already defined in
49 * - Receive buffer descriptor ring is used to send buffers
51 * - Info print about send/received/handled packet number if
52 * INFO_405_ENET is set
53 * 17-Apr-01 stefan.roese@esd-electronics.com
54 * - MAL reset in "eth_halt" included
55 * - Enet speed and duplex output now in one line
56 * 08-May-01 stefan.roese@esd-electronics.com
57 * - MAL error handling added (eth_init called again)
58 * 13-Nov-01 stefan.roese@esd-electronics.com
59 * - Set IST bit in EMAC_M1 reg upon 100MBit or full duplex
60 * 04-Jan-02 stefan.roese@esd-electronics.com
61 * - Wait for PHY auto negotiation to complete added
62 * 06-Feb-02 stefan.roese@esd-electronics.com
63 * - Bug fixed in waiting for auto negotiation to complete
64 * 26-Feb-02 stefan.roese@esd-electronics.com
65 * - rx and tx buffer descriptors now allocated (no fixed address
67 * 17-Jun-02 stefan.roese@esd-electronics.com
68 * - MAL error debug printf 'M' removed (rx de interrupt may
69 * occur upon many incoming packets with only 4 rx buffers).
70 *-----------------------------------------------------------------------------*
71 * 17-Nov-03 travis.sawyer@sandburst.com
72 * - ported from 405gp_enet.c to utilized upto 4 EMAC ports
73 * in the 440GX. This port should work with the 440GP
75 *-----------------------------------------------------------------------------*/
78 #if defined(CONFIG_440) && defined(CONFIG_NET_MULTI)
82 #include <asm/processor.h>
85 #include <440gx_enet.h>
92 #define EMAC_RESET_TIMEOUT 1000 /* 1000 ms reset timeout */
93 #define PHY_AUTONEGOTIATE_TIMEOUT 4000 /* 4000 ms autonegotiate timeout */
96 /* Ethernet Transmit and Receive Buffers */
98 * In the same way ENET_MAX_MTU and ENET_MAX_MTU_ALIGNED are set from
99 * PKTSIZE and PKTSIZE_ALIGN (include/net.h)
101 #define ENET_MAX_MTU PKTSIZE
102 #define ENET_MAX_MTU_ALIGNED PKTSIZE_ALIGN
105 /* define the number of channels implemented */
106 #define EMAC_RXCHL EMAC_NUM_DEV
107 #define EMAC_TXCHL EMAC_NUM_DEV
109 /*-----------------------------------------------------------------------------+
110 * Defines for MAL/EMAC interrupt conditions as reported in the UIC (Universal
111 * Interrupt Controller).
112 *-----------------------------------------------------------------------------*/
113 #define MAL_UIC_ERR ( UIC_MAL_SERR | UIC_MAL_TXDE | UIC_MAL_RXDE)
114 #define MAL_UIC_DEF (UIC_MAL_RXEOB | MAL_UIC_ERR)
115 #define EMAC_UIC_DEF UIC_ENET
119 #define BI_PHYMODE_NONE 0
120 #define BI_PHYMODE_ZMII 1
121 #define BI_PHYMODE_RGMII 2
123 /*-----------------------------------------------------------------------------+
124 * Global variables. TX and RX descriptors and buffers.
125 *-----------------------------------------------------------------------------*/
127 static uint32_t mal_ier;
129 /*-----------------------------------------------------------------------------+
130 * Prototypes and externals.
131 *-----------------------------------------------------------------------------*/
132 static void enet_rcv (struct eth_device *dev, unsigned long malisr);
134 int enetInt (struct eth_device *dev);
135 static void mal_err (struct eth_device *dev, unsigned long isr,
136 unsigned long uic, unsigned long maldef,
137 unsigned long mal_errr);
138 static void emac_err (struct eth_device *dev, unsigned long isr);
140 /*-----------------------------------------------------------------------------+
142 | Disable MAL channel, and EMACn
145 +-----------------------------------------------------------------------------*/
146 static void ppc_440x_eth_halt (struct eth_device *dev)
148 EMAC_440GX_HW_PST hw_p = dev->priv;
149 uint32_t failsafe = 10000;
151 out32 (EMAC_IER + hw_p->hw_addr, 0x00000000); /* disable emac interrupts */
153 /* 1st reset MAL channel */
154 /* Note: writing a 0 to a channel has no effect */
155 mtdcr (maltxcarr, (MAL_CR_MMSR >> hw_p->devnum));
156 mtdcr (malrxcarr, (MAL_CR_MMSR >> hw_p->devnum));
159 while (mfdcr (maltxcasr) & (MAL_CR_MMSR >> hw_p->devnum)) {
160 udelay (1000); /* Delay 1 MS so as not to hammer the register */
168 out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_SRST);
170 hw_p->print_speed = 1; /* print speed message again next time */
175 extern int phy_setup_aneg (unsigned char addr);
176 extern int miiphy_reset (unsigned char addr);
178 static int ppc_440x_eth_init (struct eth_device *dev, bd_t * bis)
184 unsigned long duplex;
185 unsigned long failsafe;
187 unsigned short devnum;
188 unsigned short reg_short;
190 #if defined (CONFIG_440_GX)
192 unsigned long zmiifer;
193 unsigned long rmiifer;
196 EMAC_440GX_HW_PST hw_p = dev->priv;
198 /* before doing anything, figure out if we have a MAC address */
200 if (memcmp (dev->enetaddr, "\0\0\0\0\0\0", 6) == 0)
203 /* Need to get the OPB frequency so we can access the PHY */
204 get_sys_info (&sysinfo);
208 mtmsr (msr & ~(MSR_EE)); /* disable interrupts */
210 devnum = hw_p->devnum;
215 * hw_p->stats.pkts_handled <= hw_p->stats.pkts_rx <= hw_p->stats.pkts_handled+PKTBUFSRX
216 * In the most cases hw_p->stats.pkts_handled = hw_p->stats.pkts_rx, but it
217 * is possible that new packets (without relationship with
218 * current transfer) have got the time to arrived before
219 * netloop calls eth_halt
221 printf ("About preceeding transfer (eth%d):\n"
222 "- Sent packet number %d\n"
223 "- Received packet number %d\n"
224 "- Handled packet number %d\n",
227 hw_p->stats.pkts_rx, hw_p->stats.pkts_handled);
229 hw_p->stats.pkts_tx = 0;
230 hw_p->stats.pkts_rx = 0;
231 hw_p->stats.pkts_handled = 0;
234 /* MAL Channel RESET */
235 /* 1st reset MAL channel */
236 /* Note: writing a 0 to a channel has no effect */
237 mtdcr (maltxcarr, (MAL_TXRX_CASR >> hw_p->devnum));
238 mtdcr (malrxcarr, (MAL_TXRX_CASR >> hw_p->devnum));
241 /* TBS: should have udelay and failsafe here */
244 while (mfdcr (maltxcasr) & (MAL_CR_MMSR >> hw_p->devnum)) {
245 udelay (1000); /* Delay 1 MS so as not to hammer the register */
252 hw_p->tx_err_index = 0; /* Transmit Error Index for tx_err_log */
253 hw_p->rx_err_index = 0; /* Receive Error Index for rx_err_log */
255 hw_p->rx_slot = 0; /* MAL Receive Slot */
256 hw_p->rx_i_index = 0; /* Receive Interrupt Queue Index */
257 hw_p->rx_u_index = 0; /* Receive User Queue Index */
259 hw_p->tx_slot = 0; /* MAL Transmit Slot */
260 hw_p->tx_i_index = 0; /* Transmit Interrupt Queue Index */
261 hw_p->tx_u_index = 0; /* Transmit User Queue Index */
264 /* NOTE: 440GX spec states that mode is mutually exclusive */
265 /* NOTE: Therefore, disable all other EMACS, since we handle */
266 /* NOTE: only one emac at a time */
271 #if defined(CONFIG_440_GX)
272 mfsdr(sdr_pfc1, pfc1);
273 pfc1 = SDR0_PFC1_EPS_DECODE(pfc1);
277 zmiifer = (ZMII_FER_MDI | ZMII_FER_RMII) << ZMII_FER_V(devnum);
281 zmiifer = (ZMII_FER_MDI | ZMII_FER_SMII) << ZMII_FER_V(devnum);
286 zmiifer = (ZMII_FER_MDI | ZMII_FER_RMII) << ZMII_FER_V(devnum);
288 } else if (devnum == 2) {
289 zmiifer = (ZMII_FER_MDI | ZMII_FER_RMII) << ZMII_FER_V(devnum);
290 rmiifer = RGMII_FER_RGMII << RGMII_FER_V(devnum);
291 } else { /* invalid case */
297 if ((devnum == 0) || (devnum == 1)) {
298 zmiifer = (ZMII_FER_MDI | ZMII_FER_SMII) << ZMII_FER_V (devnum);
300 } else { /* ((devnum == 2) || (devnum == 3)) */
301 zmiifer = (ZMII_FER_MDI/* | ZMII_FER_RMII */) << ZMII_FER_V (devnum);
302 rmiifer = RGMII_FER_RGMII << RGMII_FER_V (devnum);
306 if ((devnum == 0) || (devnum == 1) || (devnum == 2)) {
307 zmiifer = (ZMII_FER_MDI | ZMII_FER_SMII) << ZMII_FER_V (devnum);
310 zmiifer = (ZMII_FER_MDI | ZMII_FER_RMII) << ZMII_FER_V(devnum);
311 rmiifer = RGMII_FER_RGMII << RGMII_FER_V(devnum);
315 if ((devnum == 0) || (devnum == 1)) {
316 zmiifer = (ZMII_FER_MDI | ZMII_FER_SMII) << ZMII_FER_V (devnum);
319 zmiifer = (ZMII_FER_MDI | ZMII_FER_RMII) << ZMII_FER_V(devnum);
320 rmiifer = RGMII_FER_RGMII << RGMII_FER_V(devnum);
325 zmiifer = (ZMII_FER_MDI | ZMII_FER_MII) << ZMII_FER_V(devnum);
330 out32 (ZMII_FER, zmiifer);
331 out32 (RGMII_FER, rmiifer);
333 if ((devnum == 0) || (devnum == 1)) {
334 out32 (ZMII_FER, (ZMII_FER_SMII | ZMII_FER_MDI) << ZMII_FER_V (devnum));
336 else { /* ((devnum == 2) || (devnum == 3)) */
337 out32 (ZMII_FER, ZMII_FER_MDI << ZMII_FER_V (devnum));
338 out32 (RGMII_FER, ((RGMII_FER_RGMII << RGMII_FER_V (2)) |
339 (RGMII_FER_RGMII << RGMII_FER_V (3))));
342 out32 (ZMII_SSR, ZMII_SSR_SP << ZMII_SSR_V(devnum));
343 __asm__ volatile ("eieio");
345 /* reset emac so we have access to the phy */
347 out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_SRST);
348 __asm__ volatile ("eieio");
351 while ((in32 (EMAC_M0 + hw_p->hw_addr) & (EMAC_M0_SRST)) && failsafe) {
356 /* Whack the M1 register */
358 mode_reg &= ~0x00000038;
359 if (sysinfo.freqOPB <= 50000000);
360 else if (sysinfo.freqOPB <= 66666667)
361 mode_reg |= EMAC_M1_OBCI_66;
362 else if (sysinfo.freqOPB <= 83333333)
363 mode_reg |= EMAC_M1_OBCI_83;
364 else if (sysinfo.freqOPB <= 100000000)
365 mode_reg |= EMAC_M1_OBCI_100;
367 mode_reg |= EMAC_M1_OBCI_GT100;
369 out32 (EMAC_M1 + hw_p->hw_addr, mode_reg);
372 /* wait for PHY to complete auto negotiation */
374 #ifndef CONFIG_CS8952_PHY
377 reg = CONFIG_PHY_ADDR;
380 reg = CONFIG_PHY1_ADDR;
382 #if defined (CONFIG_440_GX)
384 reg = CONFIG_PHY2_ADDR;
387 reg = CONFIG_PHY3_ADDR;
391 reg = CONFIG_PHY_ADDR;
395 bis->bi_phynum[devnum] = reg;
400 #if defined(CONFIG_CIS8201_PHY)
402 * Cicada 8201 PHY needs to have an extended register whacked
405 if ( ((devnum == 2) || (devnum ==3)) && (4 == pfc1) ) {
406 miiphy_write (reg, 23, 0x1200);
410 /* Start/Restart autonegotiation */
411 phy_setup_aneg (reg);
414 miiphy_read (reg, PHY_BMSR, ®_short);
417 * Wait if PHY is capable of autonegotiation and autonegotiation is not complete
419 if ((reg_short & PHY_BMSR_AUTN_ABLE)
420 && !(reg_short & PHY_BMSR_AUTN_COMP)) {
421 puts ("Waiting for PHY auto negotiation to complete");
423 while (!(reg_short & PHY_BMSR_AUTN_COMP)) {
427 if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
428 puts (" TIMEOUT !\n");
432 if ((i++ % 1000) == 0) {
435 udelay (1000); /* 1 ms */
436 miiphy_read (reg, PHY_BMSR, ®_short);
440 udelay (500000); /* another 500 ms (results in faster booting) */
443 speed = miiphy_speed (reg);
444 duplex = miiphy_duplex (reg);
446 if (hw_p->print_speed) {
447 hw_p->print_speed = 0;
448 printf ("ENET Speed is %d Mbps - %s duplex connection\n",
449 (int) speed, (duplex == HALF) ? "HALF" : "FULL");
452 /* Set ZMII/RGMII speed according to the phy link speed */
453 reg = in32 (ZMII_SSR);
455 out32 (ZMII_SSR, reg | (ZMII_SSR_SP << ZMII_SSR_V (devnum)));
458 reg & (~(ZMII_SSR_SP << ZMII_SSR_V (devnum))));
460 if ((devnum == 2) || (devnum == 3)) {
462 reg = (RGMII_SSR_SP_1000MBPS << RGMII_SSR_V (devnum));
463 else if (speed == 100)
464 reg = (RGMII_SSR_SP_100MBPS << RGMII_SSR_V (devnum));
466 reg = (RGMII_SSR_SP_10MBPS << RGMII_SSR_V (devnum));
468 out32 (RGMII_SSR, reg);
471 /* set the Mal configuration reg */
472 /* Errata 1.12: MAL_1 -- Disable MAL bursting */
473 if (get_pvr () == PVR_440GP_RB)
475 MAL_CR_OPBBL | MAL_CR_LEA | MAL_CR_PLBLT_DEFAULT);
478 MAL_CR_PLBB | MAL_CR_OPBBL | MAL_CR_LEA |
479 MAL_CR_PLBLT_DEFAULT | MAL_CR_EOPIE | 0x00330000);
481 /* Free "old" buffers */
482 if (hw_p->alloc_tx_buf)
483 free (hw_p->alloc_tx_buf);
484 if (hw_p->alloc_rx_buf)
485 free (hw_p->alloc_rx_buf);
488 * Malloc MAL buffer desciptors, make sure they are
489 * aligned on cache line boundary size
490 * (401/403/IOP480 = 16, 405 = 32)
491 * and doesn't cross cache block boundaries.
494 (mal_desc_t *) malloc ((sizeof (mal_desc_t) * NUM_TX_BUFF) +
495 ((2 * CFG_CACHELINE_SIZE) - 2));
496 if (((int) hw_p->alloc_tx_buf & CACHELINE_MASK) != 0) {
498 (mal_desc_t *) ((int) hw_p->alloc_tx_buf +
501 alloc_tx_buf & CACHELINE_MASK));
503 hw_p->tx = hw_p->alloc_tx_buf;
507 (mal_desc_t *) malloc ((sizeof (mal_desc_t) * NUM_RX_BUFF) +
508 ((2 * CFG_CACHELINE_SIZE) - 2));
509 if (((int) hw_p->alloc_rx_buf & CACHELINE_MASK) != 0) {
511 (mal_desc_t *) ((int) hw_p->alloc_rx_buf +
514 alloc_rx_buf & CACHELINE_MASK));
516 hw_p->rx = hw_p->alloc_rx_buf;
519 for (i = 0; i < NUM_TX_BUFF; i++) {
520 hw_p->tx[i].ctrl = 0;
521 hw_p->tx[i].data_len = 0;
522 if (hw_p->first_init == 0)
524 (char *) malloc (ENET_MAX_MTU_ALIGNED);
525 hw_p->tx[i].data_ptr = hw_p->txbuf_ptr;
526 if ((NUM_TX_BUFF - 1) == i)
527 hw_p->tx[i].ctrl |= MAL_TX_CTRL_WRAP;
528 hw_p->tx_run[i] = -1;
530 printf ("TX_BUFF %d @ 0x%08lx\n", i,
531 (ulong) hw_p->tx[i].data_ptr);
535 for (i = 0; i < NUM_RX_BUFF; i++) {
536 hw_p->rx[i].ctrl = 0;
537 hw_p->rx[i].data_len = 0;
538 /* rx[i].data_ptr = (char *) &rx_buff[i]; */
539 hw_p->rx[i].data_ptr = (char *) NetRxPackets[i];
540 if ((NUM_RX_BUFF - 1) == i)
541 hw_p->rx[i].ctrl |= MAL_RX_CTRL_WRAP;
542 hw_p->rx[i].ctrl |= MAL_RX_CTRL_EMPTY | MAL_RX_CTRL_INTR;
543 hw_p->rx_ready[i] = -1;
545 printf ("RX_BUFF %d @ 0x%08lx\n", i, (ulong) rx[i].data_ptr);
551 reg |= dev->enetaddr[0]; /* set high address */
553 reg |= dev->enetaddr[1];
555 out32 (EMAC_IAH + hw_p->hw_addr, reg);
558 reg |= dev->enetaddr[2]; /* set low address */
560 reg |= dev->enetaddr[3];
562 reg |= dev->enetaddr[4];
564 reg |= dev->enetaddr[5];
566 out32 (EMAC_IAL + hw_p->hw_addr, reg);
570 /* setup MAL tx & rx channel pointers */
571 mtdcr (maltxbattr, 0x0);
572 mtdcr (maltxctp1r, hw_p->tx);
573 mtdcr (malrxbattr, 0x0);
574 mtdcr (malrxctp1r, hw_p->rx);
575 /* set RX buffer size */
576 mtdcr (malrcbs1, ENET_MAX_MTU_ALIGNED / 16);
578 #if defined (CONFIG_440_GX)
580 /* setup MAL tx & rx channel pointers */
581 mtdcr (maltxbattr, 0x0);
582 mtdcr (maltxctp2r, hw_p->tx);
583 mtdcr (malrxbattr, 0x0);
584 mtdcr (malrxctp2r, hw_p->rx);
585 /* set RX buffer size */
586 mtdcr (malrcbs2, ENET_MAX_MTU_ALIGNED / 16);
589 /* setup MAL tx & rx channel pointers */
590 mtdcr (maltxbattr, 0x0);
591 mtdcr (maltxctp3r, hw_p->tx);
592 mtdcr (malrxbattr, 0x0);
593 mtdcr (malrxctp3r, hw_p->rx);
594 /* set RX buffer size */
595 mtdcr (malrcbs3, ENET_MAX_MTU_ALIGNED / 16);
597 #endif /*CONFIG_440_GX */
600 /* setup MAL tx & rx channel pointers */
601 mtdcr (maltxbattr, 0x0);
602 mtdcr (maltxctp0r, hw_p->tx);
603 mtdcr (malrxbattr, 0x0);
604 mtdcr (malrxctp0r, hw_p->rx);
605 /* set RX buffer size */
606 mtdcr (malrcbs0, ENET_MAX_MTU_ALIGNED / 16);
610 /* Enable MAL transmit and receive channels */
611 mtdcr (maltxcasr, (MAL_TXRX_CASR >> hw_p->devnum));
612 mtdcr (malrxcasr, (MAL_TXRX_CASR >> hw_p->devnum));
614 /* set transmit enable & receive enable */
615 out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_TXE | EMAC_M0_RXE);
617 /* set receive fifo to 4k and tx fifo to 2k */
618 mode_reg = in32 (EMAC_M1 + hw_p->hw_addr);
619 mode_reg |= EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K;
623 if (speed == _100BASET)
624 mode_reg = mode_reg | EMAC_M1_MF_100MBPS | EMAC_M1_IST;
626 mode_reg = mode_reg & ~0x00C00000; /* 10 MBPS */
628 mode_reg = mode_reg | 0x80000000 | EMAC_M1_IST;
630 out32 (EMAC_M1 + hw_p->hw_addr, mode_reg);
632 /* Enable broadcast and indvidual address */
633 /* TBS: enabling runts as some misbehaved nics will send runts */
634 out32 (EMAC_RXM + hw_p->hw_addr, EMAC_RMR_BAE | EMAC_RMR_IAE);
636 /* we probably need to set the tx mode1 reg? maybe at tx time */
638 /* set transmit request threshold register */
639 out32 (EMAC_TRTR + hw_p->hw_addr, 0x18000000); /* 256 byte threshold */
641 /* set receive low/high water mark register */
642 /* 440GP has a 64 byte burst length */
643 out32 (EMAC_RX_HI_LO_WMARK + hw_p->hw_addr, 0x80009000);
644 out32 (EMAC_TXM1 + hw_p->hw_addr, 0xf8640000);
646 /* Set fifo limit entry in tx mode 0 */
647 out32 (EMAC_TXM0 + hw_p->hw_addr, 0x00000003);
649 out32 (EMAC_I_FRAME_GAP_REG + hw_p->hw_addr, 0x00000008);
652 hw_p->emac_ier = EMAC_ISR_PTLE | EMAC_ISR_BFCS |
653 EMAC_ISR_PTLE | EMAC_ISR_ORE | EMAC_ISR_IRE;
654 if (speed == _100BASET)
655 hw_p->emac_ier = hw_p->emac_ier | EMAC_ISR_SYE;
657 out32 (EMAC_ISR + hw_p->hw_addr, 0xffffffff); /* clear pending interrupts */
658 out32 (EMAC_IER + hw_p->hw_addr, hw_p->emac_ier);
660 if (hw_p->first_init == 0) {
662 * Connect interrupt service routines
664 irq_install_handler (VECNUM_EWU0 + (hw_p->devnum * 2),
665 (interrupt_handler_t *) enetInt, dev);
666 irq_install_handler (VECNUM_ETH0 + (hw_p->devnum * 2),
667 (interrupt_handler_t *) enetInt, dev);
670 mtmsr (msr); /* enable interrupts again */
673 hw_p->first_init = 1;
679 static int ppc_440x_eth_send (struct eth_device *dev, volatile void *ptr,
682 struct enet_frame *ef_ptr;
683 ulong time_start, time_now;
684 unsigned long temp_txm0;
685 EMAC_440GX_HW_PST hw_p = dev->priv;
687 ef_ptr = (struct enet_frame *) ptr;
689 /*-----------------------------------------------------------------------+
690 * Copy in our address into the frame.
691 *-----------------------------------------------------------------------*/
692 (void) memcpy (ef_ptr->source_addr, dev->enetaddr, ENET_ADDR_LENGTH);
694 /*-----------------------------------------------------------------------+
695 * If frame is too long or too short, modify length.
696 *-----------------------------------------------------------------------*/
697 /* TBS: where does the fragment go???? */
698 if (len > ENET_MAX_MTU)
701 /* memcpy ((void *) &tx_buff[tx_slot], (const void *) ptr, len); */
702 memcpy ((void *) hw_p->txbuf_ptr, (const void *) ptr, len);
704 /*-----------------------------------------------------------------------+
705 * set TX Buffer busy, and send it
706 *-----------------------------------------------------------------------*/
707 hw_p->tx[hw_p->tx_slot].ctrl = (MAL_TX_CTRL_LAST |
708 EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP) &
709 ~(EMAC_TX_CTRL_ISA | EMAC_TX_CTRL_RSA);
710 if ((NUM_TX_BUFF - 1) == hw_p->tx_slot)
711 hw_p->tx[hw_p->tx_slot].ctrl |= MAL_TX_CTRL_WRAP;
713 hw_p->tx[hw_p->tx_slot].data_len = (short) len;
714 hw_p->tx[hw_p->tx_slot].ctrl |= MAL_TX_CTRL_READY;
716 __asm__ volatile ("eieio");
718 out32 (EMAC_TXM0 + hw_p->hw_addr,
719 in32 (EMAC_TXM0 + hw_p->hw_addr) | EMAC_TXM0_GNP0);
721 hw_p->stats.pkts_tx++;
724 /*-----------------------------------------------------------------------+
725 * poll unitl the packet is sent and then make sure it is OK
726 *-----------------------------------------------------------------------*/
727 time_start = get_timer (0);
729 temp_txm0 = in32 (EMAC_TXM0 + hw_p->hw_addr);
730 /* loop until either TINT turns on or 3 seconds elapse */
731 if ((temp_txm0 & EMAC_TXM0_GNP0) != 0) {
732 /* transmit is done, so now check for errors
733 * If there is an error, an interrupt should
734 * happen when we return
736 time_now = get_timer (0);
737 if ((time_now - time_start) > 3000) {
747 int enetInt (struct eth_device *dev)
750 int rc = -1; /* default to not us */
751 unsigned long mal_isr;
752 unsigned long emac_isr = 0;
753 unsigned long mal_rx_eob;
754 unsigned long my_uic0msr, my_uic1msr;
756 #if defined(CONFIG_440_GX)
757 unsigned long my_uic2msr;
759 EMAC_440GX_HW_PST hw_p;
762 * Because the mal is generic, we need to get the current
765 dev = eth_get_dev ();
770 /* enter loop that stays in interrupt code until nothing to service */
774 my_uic0msr = mfdcr (uic0msr);
775 my_uic1msr = mfdcr (uic1msr);
776 #if defined(CONFIG_440_GX)
777 my_uic2msr = mfdcr (uic2msr);
779 if (!(my_uic0msr & (UIC_MRE | UIC_MTE))
781 (UIC_ETH0 | UIC_ETH1 | UIC_MS | UIC_MTDE |
786 #if defined (CONFIG_440_GX)
787 if (!(my_uic0msr & (UIC_MRE | UIC_MTE))
788 && !(my_uic2msr & (UIC_ETH2 | UIC_ETH3))) {
793 /* get and clear controller status interrupts */
794 /* look at Mal and EMAC interrupts */
795 if ((my_uic0msr & (UIC_MRE | UIC_MTE))
796 || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
797 /* we have a MAL interrupt */
798 mal_isr = mfdcr (malesr);
799 /* look for mal error */
800 if (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE)) {
801 mal_err (dev, mal_isr, my_uic0msr,
802 MAL_UIC_DEF, MAL_UIC_ERR);
808 /* port by port dispatch of emac interrupts */
809 if (hw_p->devnum == 0) {
810 if (UIC_ETH0 & my_uic1msr) { /* look for EMAC errors */
811 emac_isr = in32 (EMAC_ISR + hw_p->hw_addr);
812 if ((hw_p->emac_ier & emac_isr) != 0) {
813 emac_err (dev, emac_isr);
818 if ((hw_p->emac_ier & emac_isr)
819 || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
820 mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */
821 mtdcr (uic1sr, UIC_ETH0 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
822 return (rc); /* we had errors so get out */
826 if (hw_p->devnum == 1) {
827 if (UIC_ETH1 & my_uic1msr) { /* look for EMAC errors */
828 emac_isr = in32 (EMAC_ISR + hw_p->hw_addr);
829 if ((hw_p->emac_ier & emac_isr) != 0) {
830 emac_err (dev, emac_isr);
835 if ((hw_p->emac_ier & emac_isr)
836 || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
837 mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */
838 mtdcr (uic1sr, UIC_ETH1 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
839 return (rc); /* we had errors so get out */
842 #if defined (CONFIG_440_GX)
843 if (hw_p->devnum == 2) {
844 if (UIC_ETH2 & my_uic2msr) { /* look for EMAC errors */
845 emac_isr = in32 (EMAC_ISR + hw_p->hw_addr);
846 if ((hw_p->emac_ier & emac_isr) != 0) {
847 emac_err (dev, emac_isr);
852 if ((hw_p->emac_ier & emac_isr)
853 || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
854 mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */
855 mtdcr (uic1sr, UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
856 mtdcr (uic2sr, UIC_ETH2);
857 return (rc); /* we had errors so get out */
861 if (hw_p->devnum == 3) {
862 if (UIC_ETH3 & my_uic2msr) { /* look for EMAC errors */
863 emac_isr = in32 (EMAC_ISR + hw_p->hw_addr);
864 if ((hw_p->emac_ier & emac_isr) != 0) {
865 emac_err (dev, emac_isr);
870 if ((hw_p->emac_ier & emac_isr)
871 || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
872 mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */
873 mtdcr (uic1sr, UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
874 mtdcr (uic2sr, UIC_ETH3);
875 return (rc); /* we had errors so get out */
878 #endif /* CONFIG_440_GX */
879 /* handle MAX TX EOB interrupt from a tx */
880 if (my_uic0msr & UIC_MTE) {
881 mal_rx_eob = mfdcr (maltxeobisr);
882 mtdcr (maltxeobisr, mal_rx_eob);
883 mtdcr (uic0sr, UIC_MTE);
885 /* handle MAL RX EOB interupt from a receive */
886 /* check for EOB on valid channels */
887 if (my_uic0msr & UIC_MRE) {
888 mal_rx_eob = mfdcr (malrxeobisr);
889 if ((mal_rx_eob & (0x80000000 >> hw_p->devnum)) != 0) { /* call emac routine for channel x */
891 mtdcr(malrxeobisr, mal_rx_eob); */
892 enet_rcv (dev, emac_isr);
893 /* indicate that we serviced an interrupt */
898 mtdcr (uic0sr, UIC_MRE); /* Clear */
899 mtdcr (uic1sr, UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
900 switch (hw_p->devnum) {
902 mtdcr (uic1sr, UIC_ETH0);
905 mtdcr (uic1sr, UIC_ETH1);
907 #if defined (CONFIG_440_GX)
909 mtdcr (uic2sr, UIC_ETH2);
912 mtdcr (uic2sr, UIC_ETH3);
914 #endif /* CONFIG_440_GX */
923 /*-----------------------------------------------------------------------------+
925 *-----------------------------------------------------------------------------*/
926 static void mal_err (struct eth_device *dev, unsigned long isr,
927 unsigned long uic, unsigned long maldef,
928 unsigned long mal_errr)
930 EMAC_440GX_HW_PST hw_p = dev->priv;
932 mtdcr (malesr, isr); /* clear interrupt */
934 /* clear DE interrupt */
935 mtdcr (maltxdeir, 0xC0000000);
936 mtdcr (malrxdeir, 0x80000000);
939 printf ("\nMAL error occured.... ISR = %lx UIC = = %lx MAL_DEF = %lx MAL_ERR= %lx \n", isr, uic, maldef, mal_errr);
942 eth_init (hw_p->bis); /* start again... */
945 /*-----------------------------------------------------------------------------+
947 *-----------------------------------------------------------------------------*/
948 static void emac_err (struct eth_device *dev, unsigned long isr)
950 EMAC_440GX_HW_PST hw_p = dev->priv;
952 printf ("EMAC%d error occured.... ISR = %lx\n", hw_p->devnum, isr);
953 out32 (EMAC_ISR + hw_p->hw_addr, isr);
956 /*-----------------------------------------------------------------------------+
957 * enet_rcv() handles the ethernet receive data
958 *-----------------------------------------------------------------------------*/
959 static void enet_rcv (struct eth_device *dev, unsigned long malisr)
961 struct enet_frame *ef_ptr;
962 unsigned long data_len;
963 unsigned long rx_eob_isr;
964 EMAC_440GX_HW_PST hw_p = dev->priv;
970 rx_eob_isr = mfdcr (malrxeobisr);
971 if ((0x80000000 >> hw_p->devnum) & rx_eob_isr) {
973 mtdcr (malrxeobisr, rx_eob_isr);
976 while (1) { /* do all */
979 if ((MAL_RX_CTRL_EMPTY & hw_p->rx[i].ctrl)
980 || (loop_count >= NUM_RX_BUFF))
984 if (NUM_RX_BUFF == hw_p->rx_slot)
987 data_len = (unsigned long) hw_p->rx[i].data_len; /* Get len */
989 if (data_len > ENET_MAX_MTU) /* Check len */
992 if (EMAC_RX_ERRORS & hw_p->rx[i].ctrl) { /* Check Errors */
994 hw_p->stats.rx_err_log[hw_p->
997 hw_p->rx_err_index++;
998 if (hw_p->rx_err_index ==
1000 hw_p->rx_err_index =
1003 } /* data_len < max mtu */
1005 if (!data_len) { /* no data */
1006 hw_p->rx[i].ctrl |= MAL_RX_CTRL_EMPTY; /* Free Recv Buffer */
1008 hw_p->stats.data_len_err++; /* Error at Rx */
1013 /* Check if user has already eaten buffer */
1014 /* if not => ERROR */
1015 else if (hw_p->rx_ready[hw_p->rx_i_index] != -1) {
1016 if (hw_p->is_receiving)
1017 printf ("ERROR : Receive buffers are full!\n");
1020 hw_p->stats.rx_frames++;
1021 hw_p->stats.rx += data_len;
1022 ef_ptr = (struct enet_frame *) hw_p->rx[i].
1024 #ifdef INFO_440_ENET
1025 hw_p->stats.pkts_rx++;
1030 hw_p->rx_ready[hw_p->rx_i_index] = i;
1032 if (NUM_RX_BUFF == hw_p->rx_i_index)
1033 hw_p->rx_i_index = 0;
1035 /* printf("X"); /|* test-only *|/ */
1038 * free receive buffer only when
1039 * buffer has been handled (eth_rx)
1040 rx[i].ctrl |= MAL_RX_CTRL_EMPTY;
1044 } /* if EMACK_RXCHL */
1048 static int ppc_440x_eth_rx (struct eth_device *dev)
1053 EMAC_440GX_HW_PST hw_p = dev->priv;
1055 hw_p->is_receiving = 1; /* tell driver */
1059 * use ring buffer and
1060 * get index from rx buffer desciptor queue
1062 user_index = hw_p->rx_ready[hw_p->rx_u_index];
1063 if (user_index == -1) {
1065 break; /* nothing received - leave for() loop */
1069 mtmsr (msr & ~(MSR_EE));
1071 length = hw_p->rx[user_index].data_len;
1073 /* Pass the packet up to the protocol layers. */
1074 /* NetReceive(NetRxPackets[rxIdx], length - 4); */
1075 /* NetReceive(NetRxPackets[i], length); */
1076 NetReceive (NetRxPackets[user_index], length - 4);
1077 /* Free Recv Buffer */
1078 hw_p->rx[user_index].ctrl |= MAL_RX_CTRL_EMPTY;
1079 /* Free rx buffer descriptor queue */
1080 hw_p->rx_ready[hw_p->rx_u_index] = -1;
1082 if (NUM_RX_BUFF == hw_p->rx_u_index)
1083 hw_p->rx_u_index = 0;
1085 #ifdef INFO_440_ENET
1086 hw_p->stats.pkts_handled++;
1089 mtmsr (msr); /* Enable IRQ's */
1092 hw_p->is_receiving = 0; /* tell driver */
1097 int ppc_440x_eth_initialize (bd_t * bis)
1099 static int virgin = 0;
1101 struct eth_device *dev;
1104 EMAC_440GX_HW_PST hw = NULL;
1106 mfsdr (sdr_pfc1, pfc1);
1107 pfc1 &= ~(0x01e00000);
1109 mtsdr (sdr_pfc1, pfc1);
1110 /* set phy num and mode */
1111 bis->bi_phynum[0] = CONFIG_PHY_ADDR;
1112 bis->bi_phynum[1] = CONFIG_PHY1_ADDR;
1113 bis->bi_phynum[2] = CONFIG_PHY2_ADDR;
1114 bis->bi_phynum[3] = CONFIG_PHY3_ADDR;
1115 bis->bi_phymode[0] = 0;
1116 bis->bi_phymode[1] = 0;
1117 bis->bi_phymode[2] = 2;
1118 bis->bi_phymode[3] = 2;
1120 for (eth_num = 0; eth_num < EMAC_NUM_DEV; eth_num++) {
1122 /* See if we can actually bring up the interface, otherwise, skip it */
1125 if (memcmp (bis->bi_enetaddr, "\0\0\0\0\0\0", 6) == 0) {
1126 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1131 if (memcmp (bis->bi_enet1addr, "\0\0\0\0\0\0", 6) == 0) {
1132 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1137 if (memcmp (bis->bi_enet2addr, "\0\0\0\0\0\0", 6) == 0) {
1138 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1143 if (memcmp (bis->bi_enet3addr, "\0\0\0\0\0\0", 6) == 0) {
1144 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1149 if (memcmp (bis->bi_enetaddr, "\0\0\0\0\0\0", 6) == 0) {
1150 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1156 /* Allocate device structure */
1157 dev = (struct eth_device *) malloc (sizeof (*dev));
1159 printf ("ppc_440x_eth_initialize: "
1160 "Cannot allocate eth_device %d\n", eth_num);
1164 /* Allocate our private use data */
1165 hw = (EMAC_440GX_HW_PST) malloc (sizeof (*hw));
1167 printf ("ppc_440x_eth_initialize: "
1168 "Cannot allocate private hw data for eth_device %d",
1177 memcpy (dev->enetaddr, bis->bi_enetaddr, 6);
1180 hw->hw_addr = 0x100;
1181 memcpy (dev->enetaddr, bis->bi_enet1addr, 6);
1184 hw->hw_addr = 0x400;
1185 memcpy (dev->enetaddr, bis->bi_enet2addr, 6);
1188 hw->hw_addr = 0x600;
1189 memcpy (dev->enetaddr, bis->bi_enet3addr, 6);
1193 memcpy (dev->enetaddr, bis->bi_enetaddr, 6);
1197 hw->devnum = eth_num;
1199 sprintf (dev->name, "ppc_440x_eth%d", eth_num);
1200 dev->priv = (void *) hw;
1201 dev->init = ppc_440x_eth_init;
1202 dev->halt = ppc_440x_eth_halt;
1203 dev->send = ppc_440x_eth_send;
1204 dev->recv = ppc_440x_eth_rx;
1207 /* set the MAL IER ??? names may change with new spec ??? */
1209 MAL_IER_DE | MAL_IER_NE | MAL_IER_TE |
1210 MAL_IER_OPBE | MAL_IER_PLBE;
1211 mtdcr (malesr, 0xffffffff); /* clear pending interrupts */
1212 mtdcr (maltxdeir, 0xffffffff); /* clear pending interrupts */
1213 mtdcr (malrxdeir, 0xffffffff); /* clear pending interrupts */
1214 mtdcr (malier, mal_ier);
1216 /* install MAL interrupt handler */
1217 irq_install_handler (VECNUM_MS,
1218 (interrupt_handler_t *) enetInt,
1220 irq_install_handler (VECNUM_MTE,
1221 (interrupt_handler_t *) enetInt,
1223 irq_install_handler (VECNUM_MRE,
1224 (interrupt_handler_t *) enetInt,
1226 irq_install_handler (VECNUM_TXDE,
1227 (interrupt_handler_t *) enetInt,
1229 irq_install_handler (VECNUM_RXDE,
1230 (interrupt_handler_t *) enetInt,
1237 } /* end for each supported device */
1240 #endif /* CONFIG_440 && CONFIG_NET_MULTI */