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 #if defined (CONFIG_440_GX)
179 int ppc_440x_eth_setup_bridge(int devnum, bd_t * bis)
182 unsigned long zmiifer;
183 unsigned long rmiifer;
185 mfsdr(sdr_pfc1, pfc1);
186 pfc1 = SDR0_PFC1_EPS_DECODE(pfc1);
193 zmiifer |= ZMII_FER_RMII << ZMII_FER_V(0);
194 zmiifer |= ZMII_FER_RMII << ZMII_FER_V(1);
195 zmiifer |= ZMII_FER_RMII << ZMII_FER_V(2);
196 zmiifer |= ZMII_FER_RMII << ZMII_FER_V(3);
197 bis->bi_phymode[0] = BI_PHYMODE_ZMII;
198 bis->bi_phymode[1] = BI_PHYMODE_ZMII;
199 bis->bi_phymode[2] = BI_PHYMODE_ZMII;
200 bis->bi_phymode[3] = BI_PHYMODE_ZMII;
203 zmiifer = ZMII_FER_SMII << ZMII_FER_V(0);
204 zmiifer = ZMII_FER_SMII << ZMII_FER_V(1);
205 zmiifer = ZMII_FER_SMII << ZMII_FER_V(2);
206 zmiifer = ZMII_FER_SMII << ZMII_FER_V(3);
207 bis->bi_phymode[0] = BI_PHYMODE_ZMII;
208 bis->bi_phymode[1] = BI_PHYMODE_ZMII;
209 bis->bi_phymode[2] = BI_PHYMODE_ZMII;
210 bis->bi_phymode[3] = BI_PHYMODE_ZMII;
213 zmiifer |= ZMII_FER_RMII << ZMII_FER_V(0);
214 rmiifer |= RGMII_FER_RGMII << RGMII_FER_V(2);
215 bis->bi_phymode[0] = BI_PHYMODE_ZMII;
216 bis->bi_phymode[1] = BI_PHYMODE_NONE;
217 bis->bi_phymode[2] = BI_PHYMODE_RGMII;
218 bis->bi_phymode[3] = BI_PHYMODE_NONE;
221 zmiifer |= ZMII_FER_SMII << ZMII_FER_V(0);
222 zmiifer |= ZMII_FER_SMII << ZMII_FER_V(1);
223 rmiifer |= RGMII_FER_RGMII << RGMII_FER_V (2);
224 rmiifer |= RGMII_FER_RGMII << RGMII_FER_V (3);
225 bis->bi_phymode[0] = BI_PHYMODE_ZMII;
226 bis->bi_phymode[1] = BI_PHYMODE_ZMII;
227 bis->bi_phymode[2] = BI_PHYMODE_RGMII;
228 bis->bi_phymode[3] = BI_PHYMODE_RGMII;
231 zmiifer |= ZMII_FER_SMII << ZMII_FER_V (0);
232 zmiifer |= ZMII_FER_SMII << ZMII_FER_V (1);
233 zmiifer |= ZMII_FER_SMII << ZMII_FER_V (2);
234 rmiifer |= RGMII_FER_RGMII << RGMII_FER_V(3);
235 bis->bi_phymode[0] = BI_PHYMODE_ZMII;
236 bis->bi_phymode[1] = BI_PHYMODE_ZMII;
237 bis->bi_phymode[2] = BI_PHYMODE_ZMII;
238 bis->bi_phymode[3] = BI_PHYMODE_RGMII;
241 zmiifer |= ZMII_FER_SMII << ZMII_FER_V (0);
242 zmiifer |= ZMII_FER_SMII << ZMII_FER_V (1);
243 rmiifer |= RGMII_FER_RGMII << RGMII_FER_V(2);
244 rmiifer |= RGMII_FER_RGMII << RGMII_FER_V(3);
245 bis->bi_phymode[0] = BI_PHYMODE_ZMII;
246 bis->bi_phymode[1] = BI_PHYMODE_ZMII;
247 bis->bi_phymode[2] = BI_PHYMODE_RGMII;
248 bis->bi_phymode[3] = BI_PHYMODE_RGMII;
252 zmiifer = ZMII_FER_MII << ZMII_FER_V(devnum);
254 bis->bi_phymode[0] = BI_PHYMODE_ZMII;
255 bis->bi_phymode[1] = BI_PHYMODE_ZMII;
256 bis->bi_phymode[2] = BI_PHYMODE_ZMII;
257 bis->bi_phymode[3] = BI_PHYMODE_ZMII;
261 /* Ensure we setup mdio for this devnum and ONLY this devnum */
262 zmiifer |= (ZMII_FER_MDI) << ZMII_FER_V(devnum);
264 out32 (ZMII_FER, zmiifer);
265 out32 (RGMII_FER, rmiifer);
272 static int ppc_440x_eth_init (struct eth_device *dev, bd_t * bis)
278 unsigned long duplex;
279 unsigned long failsafe;
281 unsigned short devnum;
282 unsigned short reg_short;
286 EMAC_440GX_HW_PST hw_p = dev->priv;
288 /* before doing anything, figure out if we have a MAC address */
290 if (memcmp (dev->enetaddr, "\0\0\0\0\0\0", 6) == 0)
293 /* Need to get the OPB frequency so we can access the PHY */
294 get_sys_info (&sysinfo);
298 mtmsr (msr & ~(MSR_EE)); /* disable interrupts */
300 devnum = hw_p->devnum;
305 * hw_p->stats.pkts_handled <= hw_p->stats.pkts_rx <= hw_p->stats.pkts_handled+PKTBUFSRX
306 * In the most cases hw_p->stats.pkts_handled = hw_p->stats.pkts_rx, but it
307 * is possible that new packets (without relationship with
308 * current transfer) have got the time to arrived before
309 * netloop calls eth_halt
311 printf ("About preceeding transfer (eth%d):\n"
312 "- Sent packet number %d\n"
313 "- Received packet number %d\n"
314 "- Handled packet number %d\n",
317 hw_p->stats.pkts_rx, hw_p->stats.pkts_handled);
319 hw_p->stats.pkts_tx = 0;
320 hw_p->stats.pkts_rx = 0;
321 hw_p->stats.pkts_handled = 0;
324 /* MAL Channel RESET */
325 /* 1st reset MAL channel */
326 /* Note: writing a 0 to a channel has no effect */
327 mtdcr (maltxcarr, (MAL_TXRX_CASR >> hw_p->devnum));
328 mtdcr (malrxcarr, (MAL_TXRX_CASR >> hw_p->devnum));
331 /* TBS: should have udelay and failsafe here */
334 while (mfdcr (maltxcasr) & (MAL_CR_MMSR >> hw_p->devnum)) {
335 udelay (1000); /* Delay 1 MS so as not to hammer the register */
342 hw_p->tx_err_index = 0; /* Transmit Error Index for tx_err_log */
343 hw_p->rx_err_index = 0; /* Receive Error Index for rx_err_log */
345 hw_p->rx_slot = 0; /* MAL Receive Slot */
346 hw_p->rx_i_index = 0; /* Receive Interrupt Queue Index */
347 hw_p->rx_u_index = 0; /* Receive User Queue Index */
349 hw_p->tx_slot = 0; /* MAL Transmit Slot */
350 hw_p->tx_i_index = 0; /* Transmit Interrupt Queue Index */
351 hw_p->tx_u_index = 0; /* Transmit User Queue Index */
354 /* NOTE: 440GX spec states that mode is mutually exclusive */
355 /* NOTE: Therefore, disable all other EMACS, since we handle */
356 /* NOTE: only one emac at a time */
361 #if defined(CONFIG_440_GX)
362 ethgroup = ppc_440x_eth_setup_bridge(devnum, bis);
364 if ((devnum == 0) || (devnum == 1)) {
365 out32 (ZMII_FER, (ZMII_FER_SMII | ZMII_FER_MDI) << ZMII_FER_V (devnum));
367 else { /* ((devnum == 2) || (devnum == 3)) */
368 out32 (ZMII_FER, ZMII_FER_MDI << ZMII_FER_V (devnum));
369 out32 (RGMII_FER, ((RGMII_FER_RGMII << RGMII_FER_V (2)) |
370 (RGMII_FER_RGMII << RGMII_FER_V (3))));
374 out32 (ZMII_SSR, ZMII_SSR_SP << ZMII_SSR_V(devnum));
375 __asm__ volatile ("eieio");
377 /* reset emac so we have access to the phy */
379 out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_SRST);
380 __asm__ volatile ("eieio");
383 while ((in32 (EMAC_M0 + hw_p->hw_addr) & (EMAC_M0_SRST)) && failsafe) {
388 /* Whack the M1 register */
390 mode_reg &= ~0x00000038;
391 if (sysinfo.freqOPB <= 50000000);
392 else if (sysinfo.freqOPB <= 66666667)
393 mode_reg |= EMAC_M1_OBCI_66;
394 else if (sysinfo.freqOPB <= 83333333)
395 mode_reg |= EMAC_M1_OBCI_83;
396 else if (sysinfo.freqOPB <= 100000000)
397 mode_reg |= EMAC_M1_OBCI_100;
399 mode_reg |= EMAC_M1_OBCI_GT100;
401 out32 (EMAC_M1 + hw_p->hw_addr, mode_reg);
404 /* wait for PHY to complete auto negotiation */
406 #ifndef CONFIG_CS8952_PHY
409 reg = CONFIG_PHY_ADDR;
412 reg = CONFIG_PHY1_ADDR;
414 #if defined (CONFIG_440_GX)
416 reg = CONFIG_PHY2_ADDR;
419 reg = CONFIG_PHY3_ADDR;
423 reg = CONFIG_PHY_ADDR;
427 bis->bi_phynum[devnum] = reg;
432 #if defined(CONFIG_440_GX)
433 #if defined(CONFIG_CIS8201_PHY)
435 * Cicada 8201 PHY needs to have an extended register whacked
438 if ( ((devnum == 2) || (devnum ==3)) && (4 == ethgroup) ) {
439 miiphy_write (reg, 23, 0x1200);
443 /* Start/Restart autonegotiation */
444 phy_setup_aneg (reg);
447 miiphy_read (reg, PHY_BMSR, ®_short);
450 * Wait if PHY is capable of autonegotiation and autonegotiation is not complete
452 if ((reg_short & PHY_BMSR_AUTN_ABLE)
453 && !(reg_short & PHY_BMSR_AUTN_COMP)) {
454 puts ("Waiting for PHY auto negotiation to complete");
456 while (!(reg_short & PHY_BMSR_AUTN_COMP)) {
460 if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
461 puts (" TIMEOUT !\n");
465 if ((i++ % 1000) == 0) {
468 udelay (1000); /* 1 ms */
469 miiphy_read (reg, PHY_BMSR, ®_short);
473 udelay (500000); /* another 500 ms (results in faster booting) */
476 speed = miiphy_speed (reg);
477 duplex = miiphy_duplex (reg);
479 if (hw_p->print_speed) {
480 hw_p->print_speed = 0;
481 printf ("ENET Speed is %d Mbps - %s duplex connection\n",
482 (int) speed, (duplex == HALF) ? "HALF" : "FULL");
485 /* Set ZMII/RGMII speed according to the phy link speed */
486 reg = in32 (ZMII_SSR);
487 if ( (speed == 100) || (speed == 1000) )
488 out32 (ZMII_SSR, reg | (ZMII_SSR_SP << ZMII_SSR_V (devnum)));
491 reg & (~(ZMII_SSR_SP << ZMII_SSR_V (devnum))));
493 if ((devnum == 2) || (devnum == 3)) {
495 reg = (RGMII_SSR_SP_1000MBPS << RGMII_SSR_V (devnum));
496 else if (speed == 100)
497 reg = (RGMII_SSR_SP_100MBPS << RGMII_SSR_V (devnum));
499 reg = (RGMII_SSR_SP_10MBPS << RGMII_SSR_V (devnum));
501 out32 (RGMII_SSR, reg);
504 /* set the Mal configuration reg */
505 /* Errata 1.12: MAL_1 -- Disable MAL bursting */
506 if (get_pvr () == PVR_440GP_RB)
508 MAL_CR_OPBBL | MAL_CR_LEA | MAL_CR_PLBLT_DEFAULT);
511 MAL_CR_PLBB | MAL_CR_OPBBL | MAL_CR_LEA |
512 MAL_CR_PLBLT_DEFAULT | MAL_CR_EOPIE | 0x00330000);
514 /* Free "old" buffers */
515 if (hw_p->alloc_tx_buf)
516 free (hw_p->alloc_tx_buf);
517 if (hw_p->alloc_rx_buf)
518 free (hw_p->alloc_rx_buf);
521 * Malloc MAL buffer desciptors, make sure they are
522 * aligned on cache line boundary size
523 * (401/403/IOP480 = 16, 405 = 32)
524 * and doesn't cross cache block boundaries.
527 (mal_desc_t *) malloc ((sizeof (mal_desc_t) * NUM_TX_BUFF) +
528 ((2 * CFG_CACHELINE_SIZE) - 2));
529 if (((int) hw_p->alloc_tx_buf & CACHELINE_MASK) != 0) {
531 (mal_desc_t *) ((int) hw_p->alloc_tx_buf +
534 alloc_tx_buf & CACHELINE_MASK));
536 hw_p->tx = hw_p->alloc_tx_buf;
540 (mal_desc_t *) malloc ((sizeof (mal_desc_t) * NUM_RX_BUFF) +
541 ((2 * CFG_CACHELINE_SIZE) - 2));
542 if (((int) hw_p->alloc_rx_buf & CACHELINE_MASK) != 0) {
544 (mal_desc_t *) ((int) hw_p->alloc_rx_buf +
547 alloc_rx_buf & CACHELINE_MASK));
549 hw_p->rx = hw_p->alloc_rx_buf;
552 for (i = 0; i < NUM_TX_BUFF; i++) {
553 hw_p->tx[i].ctrl = 0;
554 hw_p->tx[i].data_len = 0;
555 if (hw_p->first_init == 0)
557 (char *) malloc (ENET_MAX_MTU_ALIGNED);
558 hw_p->tx[i].data_ptr = hw_p->txbuf_ptr;
559 if ((NUM_TX_BUFF - 1) == i)
560 hw_p->tx[i].ctrl |= MAL_TX_CTRL_WRAP;
561 hw_p->tx_run[i] = -1;
563 printf ("TX_BUFF %d @ 0x%08lx\n", i,
564 (ulong) hw_p->tx[i].data_ptr);
568 for (i = 0; i < NUM_RX_BUFF; i++) {
569 hw_p->rx[i].ctrl = 0;
570 hw_p->rx[i].data_len = 0;
571 /* rx[i].data_ptr = (char *) &rx_buff[i]; */
572 hw_p->rx[i].data_ptr = (char *) NetRxPackets[i];
573 if ((NUM_RX_BUFF - 1) == i)
574 hw_p->rx[i].ctrl |= MAL_RX_CTRL_WRAP;
575 hw_p->rx[i].ctrl |= MAL_RX_CTRL_EMPTY | MAL_RX_CTRL_INTR;
576 hw_p->rx_ready[i] = -1;
578 printf ("RX_BUFF %d @ 0x%08lx\n", i, (ulong) rx[i].data_ptr);
584 reg |= dev->enetaddr[0]; /* set high address */
586 reg |= dev->enetaddr[1];
588 out32 (EMAC_IAH + hw_p->hw_addr, reg);
591 reg |= dev->enetaddr[2]; /* set low address */
593 reg |= dev->enetaddr[3];
595 reg |= dev->enetaddr[4];
597 reg |= dev->enetaddr[5];
599 out32 (EMAC_IAL + hw_p->hw_addr, reg);
603 /* setup MAL tx & rx channel pointers */
604 mtdcr (maltxbattr, 0x0);
605 mtdcr (maltxctp1r, hw_p->tx);
606 mtdcr (malrxbattr, 0x0);
607 mtdcr (malrxctp1r, hw_p->rx);
608 /* set RX buffer size */
609 mtdcr (malrcbs1, ENET_MAX_MTU_ALIGNED / 16);
611 #if defined (CONFIG_440_GX)
613 /* setup MAL tx & rx channel pointers */
614 mtdcr (maltxbattr, 0x0);
615 mtdcr (maltxctp2r, hw_p->tx);
616 mtdcr (malrxbattr, 0x0);
617 mtdcr (malrxctp2r, hw_p->rx);
618 /* set RX buffer size */
619 mtdcr (malrcbs2, ENET_MAX_MTU_ALIGNED / 16);
622 /* setup MAL tx & rx channel pointers */
623 mtdcr (maltxbattr, 0x0);
624 mtdcr (maltxctp3r, hw_p->tx);
625 mtdcr (malrxbattr, 0x0);
626 mtdcr (malrxctp3r, hw_p->rx);
627 /* set RX buffer size */
628 mtdcr (malrcbs3, ENET_MAX_MTU_ALIGNED / 16);
630 #endif /*CONFIG_440_GX */
633 /* setup MAL tx & rx channel pointers */
634 mtdcr (maltxbattr, 0x0);
635 mtdcr (maltxctp0r, hw_p->tx);
636 mtdcr (malrxbattr, 0x0);
637 mtdcr (malrxctp0r, hw_p->rx);
638 /* set RX buffer size */
639 mtdcr (malrcbs0, ENET_MAX_MTU_ALIGNED / 16);
643 /* Enable MAL transmit and receive channels */
644 mtdcr (maltxcasr, (MAL_TXRX_CASR >> hw_p->devnum));
645 mtdcr (malrxcasr, (MAL_TXRX_CASR >> hw_p->devnum));
647 /* set transmit enable & receive enable */
648 out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_TXE | EMAC_M0_RXE);
650 /* set receive fifo to 4k and tx fifo to 2k */
651 mode_reg = in32 (EMAC_M1 + hw_p->hw_addr);
652 mode_reg |= EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K;
655 if (speed == _1000BASET)
656 mode_reg = mode_reg | EMAC_M1_MF_1000MBPS | EMAC_M1_IST;
657 else if (speed == _100BASET)
658 mode_reg = mode_reg | EMAC_M1_MF_100MBPS | EMAC_M1_IST;
660 mode_reg = mode_reg & ~0x00C00000; /* 10 MBPS */
662 mode_reg = mode_reg | 0x80000000 | EMAC_M1_IST;
664 out32 (EMAC_M1 + hw_p->hw_addr, mode_reg);
666 /* Enable broadcast and indvidual address */
667 /* TBS: enabling runts as some misbehaved nics will send runts */
668 out32 (EMAC_RXM + hw_p->hw_addr, EMAC_RMR_BAE | EMAC_RMR_IAE);
670 /* we probably need to set the tx mode1 reg? maybe at tx time */
672 /* set transmit request threshold register */
673 out32 (EMAC_TRTR + hw_p->hw_addr, 0x18000000); /* 256 byte threshold */
675 /* set receive low/high water mark register */
676 /* 440GP has a 64 byte burst length */
677 out32 (EMAC_RX_HI_LO_WMARK + hw_p->hw_addr, 0x80009000);
678 out32 (EMAC_TXM1 + hw_p->hw_addr, 0xf8640000);
680 /* Set fifo limit entry in tx mode 0 */
681 out32 (EMAC_TXM0 + hw_p->hw_addr, 0x00000003);
683 out32 (EMAC_I_FRAME_GAP_REG + hw_p->hw_addr, 0x00000008);
686 hw_p->emac_ier = EMAC_ISR_PTLE | EMAC_ISR_BFCS |
687 EMAC_ISR_PTLE | EMAC_ISR_ORE | EMAC_ISR_IRE;
688 if (speed == _100BASET)
689 hw_p->emac_ier = hw_p->emac_ier | EMAC_ISR_SYE;
691 out32 (EMAC_ISR + hw_p->hw_addr, 0xffffffff); /* clear pending interrupts */
692 out32 (EMAC_IER + hw_p->hw_addr, hw_p->emac_ier);
694 if (hw_p->first_init == 0) {
696 * Connect interrupt service routines
698 irq_install_handler (VECNUM_EWU0 + (hw_p->devnum * 2),
699 (interrupt_handler_t *) enetInt, dev);
700 irq_install_handler (VECNUM_ETH0 + (hw_p->devnum * 2),
701 (interrupt_handler_t *) enetInt, dev);
704 mtmsr (msr); /* enable interrupts again */
707 hw_p->first_init = 1;
713 static int ppc_440x_eth_send (struct eth_device *dev, volatile void *ptr,
716 struct enet_frame *ef_ptr;
717 ulong time_start, time_now;
718 unsigned long temp_txm0;
719 EMAC_440GX_HW_PST hw_p = dev->priv;
721 ef_ptr = (struct enet_frame *) ptr;
723 /*-----------------------------------------------------------------------+
724 * Copy in our address into the frame.
725 *-----------------------------------------------------------------------*/
726 (void) memcpy (ef_ptr->source_addr, dev->enetaddr, ENET_ADDR_LENGTH);
728 /*-----------------------------------------------------------------------+
729 * If frame is too long or too short, modify length.
730 *-----------------------------------------------------------------------*/
731 /* TBS: where does the fragment go???? */
732 if (len > ENET_MAX_MTU)
735 /* memcpy ((void *) &tx_buff[tx_slot], (const void *) ptr, len); */
736 memcpy ((void *) hw_p->txbuf_ptr, (const void *) ptr, len);
738 /*-----------------------------------------------------------------------+
739 * set TX Buffer busy, and send it
740 *-----------------------------------------------------------------------*/
741 hw_p->tx[hw_p->tx_slot].ctrl = (MAL_TX_CTRL_LAST |
742 EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP) &
743 ~(EMAC_TX_CTRL_ISA | EMAC_TX_CTRL_RSA);
744 if ((NUM_TX_BUFF - 1) == hw_p->tx_slot)
745 hw_p->tx[hw_p->tx_slot].ctrl |= MAL_TX_CTRL_WRAP;
747 hw_p->tx[hw_p->tx_slot].data_len = (short) len;
748 hw_p->tx[hw_p->tx_slot].ctrl |= MAL_TX_CTRL_READY;
750 __asm__ volatile ("eieio");
752 out32 (EMAC_TXM0 + hw_p->hw_addr,
753 in32 (EMAC_TXM0 + hw_p->hw_addr) | EMAC_TXM0_GNP0);
755 hw_p->stats.pkts_tx++;
758 /*-----------------------------------------------------------------------+
759 * poll unitl the packet is sent and then make sure it is OK
760 *-----------------------------------------------------------------------*/
761 time_start = get_timer (0);
763 temp_txm0 = in32 (EMAC_TXM0 + hw_p->hw_addr);
764 /* loop until either TINT turns on or 3 seconds elapse */
765 if ((temp_txm0 & EMAC_TXM0_GNP0) != 0) {
766 /* transmit is done, so now check for errors
767 * If there is an error, an interrupt should
768 * happen when we return
770 time_now = get_timer (0);
771 if ((time_now - time_start) > 3000) {
781 int enetInt (struct eth_device *dev)
784 int rc = -1; /* default to not us */
785 unsigned long mal_isr;
786 unsigned long emac_isr = 0;
787 unsigned long mal_rx_eob;
788 unsigned long my_uic0msr, my_uic1msr;
790 #if defined(CONFIG_440_GX)
791 unsigned long my_uic2msr;
793 EMAC_440GX_HW_PST hw_p;
796 * Because the mal is generic, we need to get the current
799 dev = eth_get_dev ();
804 /* enter loop that stays in interrupt code until nothing to service */
808 my_uic0msr = mfdcr (uic0msr);
809 my_uic1msr = mfdcr (uic1msr);
810 #if defined(CONFIG_440_GX)
811 my_uic2msr = mfdcr (uic2msr);
813 if (!(my_uic0msr & (UIC_MRE | UIC_MTE))
815 (UIC_ETH0 | UIC_ETH1 | UIC_MS | UIC_MTDE |
820 #if defined (CONFIG_440_GX)
821 if (!(my_uic0msr & (UIC_MRE | UIC_MTE))
822 && !(my_uic2msr & (UIC_ETH2 | UIC_ETH3))) {
827 /* get and clear controller status interrupts */
828 /* look at Mal and EMAC interrupts */
829 if ((my_uic0msr & (UIC_MRE | UIC_MTE))
830 || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
831 /* we have a MAL interrupt */
832 mal_isr = mfdcr (malesr);
833 /* look for mal error */
834 if (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE)) {
835 mal_err (dev, mal_isr, my_uic0msr,
836 MAL_UIC_DEF, MAL_UIC_ERR);
842 /* port by port dispatch of emac interrupts */
843 if (hw_p->devnum == 0) {
844 if (UIC_ETH0 & my_uic1msr) { /* 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_ETH0 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
856 return (rc); /* we had errors so get out */
860 if (hw_p->devnum == 1) {
861 if (UIC_ETH1 & my_uic1msr) { /* look for EMAC errors */
862 emac_isr = in32 (EMAC_ISR + hw_p->hw_addr);
863 if ((hw_p->emac_ier & emac_isr) != 0) {
864 emac_err (dev, emac_isr);
869 if ((hw_p->emac_ier & emac_isr)
870 || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
871 mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */
872 mtdcr (uic1sr, UIC_ETH1 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
873 return (rc); /* we had errors so get out */
876 #if defined (CONFIG_440_GX)
877 if (hw_p->devnum == 2) {
878 if (UIC_ETH2 & my_uic2msr) { /* look for EMAC errors */
879 emac_isr = in32 (EMAC_ISR + hw_p->hw_addr);
880 if ((hw_p->emac_ier & emac_isr) != 0) {
881 emac_err (dev, emac_isr);
886 if ((hw_p->emac_ier & emac_isr)
887 || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
888 mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */
889 mtdcr (uic1sr, UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
890 mtdcr (uic2sr, UIC_ETH2);
891 return (rc); /* we had errors so get out */
895 if (hw_p->devnum == 3) {
896 if (UIC_ETH3 & my_uic2msr) { /* look for EMAC errors */
897 emac_isr = in32 (EMAC_ISR + hw_p->hw_addr);
898 if ((hw_p->emac_ier & emac_isr) != 0) {
899 emac_err (dev, emac_isr);
904 if ((hw_p->emac_ier & emac_isr)
905 || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) {
906 mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */
907 mtdcr (uic1sr, UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
908 mtdcr (uic2sr, UIC_ETH3);
909 return (rc); /* we had errors so get out */
912 #endif /* CONFIG_440_GX */
913 /* handle MAX TX EOB interrupt from a tx */
914 if (my_uic0msr & UIC_MTE) {
915 mal_rx_eob = mfdcr (maltxeobisr);
916 mtdcr (maltxeobisr, mal_rx_eob);
917 mtdcr (uic0sr, UIC_MTE);
919 /* handle MAL RX EOB interupt from a receive */
920 /* check for EOB on valid channels */
921 if (my_uic0msr & UIC_MRE) {
922 mal_rx_eob = mfdcr (malrxeobisr);
923 if ((mal_rx_eob & (0x80000000 >> hw_p->devnum)) != 0) { /* call emac routine for channel x */
925 mtdcr(malrxeobisr, mal_rx_eob); */
926 enet_rcv (dev, emac_isr);
927 /* indicate that we serviced an interrupt */
932 mtdcr (uic0sr, UIC_MRE); /* Clear */
933 mtdcr (uic1sr, UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */
934 switch (hw_p->devnum) {
936 mtdcr (uic1sr, UIC_ETH0);
939 mtdcr (uic1sr, UIC_ETH1);
941 #if defined (CONFIG_440_GX)
943 mtdcr (uic2sr, UIC_ETH2);
946 mtdcr (uic2sr, UIC_ETH3);
948 #endif /* CONFIG_440_GX */
957 /*-----------------------------------------------------------------------------+
959 *-----------------------------------------------------------------------------*/
960 static void mal_err (struct eth_device *dev, unsigned long isr,
961 unsigned long uic, unsigned long maldef,
962 unsigned long mal_errr)
964 EMAC_440GX_HW_PST hw_p = dev->priv;
966 mtdcr (malesr, isr); /* clear interrupt */
968 /* clear DE interrupt */
969 mtdcr (maltxdeir, 0xC0000000);
970 mtdcr (malrxdeir, 0x80000000);
973 printf ("\nMAL error occured.... ISR = %lx UIC = = %lx MAL_DEF = %lx MAL_ERR= %lx \n", isr, uic, maldef, mal_errr);
976 eth_init (hw_p->bis); /* start again... */
979 /*-----------------------------------------------------------------------------+
981 *-----------------------------------------------------------------------------*/
982 static void emac_err (struct eth_device *dev, unsigned long isr)
984 EMAC_440GX_HW_PST hw_p = dev->priv;
986 printf ("EMAC%d error occured.... ISR = %lx\n", hw_p->devnum, isr);
987 out32 (EMAC_ISR + hw_p->hw_addr, isr);
990 /*-----------------------------------------------------------------------------+
991 * enet_rcv() handles the ethernet receive data
992 *-----------------------------------------------------------------------------*/
993 static void enet_rcv (struct eth_device *dev, unsigned long malisr)
995 struct enet_frame *ef_ptr;
996 unsigned long data_len;
997 unsigned long rx_eob_isr;
998 EMAC_440GX_HW_PST hw_p = dev->priv;
1004 rx_eob_isr = mfdcr (malrxeobisr);
1005 if ((0x80000000 >> hw_p->devnum) & rx_eob_isr) {
1007 mtdcr (malrxeobisr, rx_eob_isr);
1010 while (1) { /* do all */
1013 if ((MAL_RX_CTRL_EMPTY & hw_p->rx[i].ctrl)
1014 || (loop_count >= NUM_RX_BUFF))
1018 if (NUM_RX_BUFF == hw_p->rx_slot)
1021 data_len = (unsigned long) hw_p->rx[i].data_len; /* Get len */
1023 if (data_len > ENET_MAX_MTU) /* Check len */
1026 if (EMAC_RX_ERRORS & hw_p->rx[i].ctrl) { /* Check Errors */
1028 hw_p->stats.rx_err_log[hw_p->
1031 hw_p->rx_err_index++;
1032 if (hw_p->rx_err_index ==
1034 hw_p->rx_err_index =
1037 } /* data_len < max mtu */
1039 if (!data_len) { /* no data */
1040 hw_p->rx[i].ctrl |= MAL_RX_CTRL_EMPTY; /* Free Recv Buffer */
1042 hw_p->stats.data_len_err++; /* Error at Rx */
1047 /* Check if user has already eaten buffer */
1048 /* if not => ERROR */
1049 else if (hw_p->rx_ready[hw_p->rx_i_index] != -1) {
1050 if (hw_p->is_receiving)
1051 printf ("ERROR : Receive buffers are full!\n");
1054 hw_p->stats.rx_frames++;
1055 hw_p->stats.rx += data_len;
1056 ef_ptr = (struct enet_frame *) hw_p->rx[i].
1058 #ifdef INFO_440_ENET
1059 hw_p->stats.pkts_rx++;
1064 hw_p->rx_ready[hw_p->rx_i_index] = i;
1066 if (NUM_RX_BUFF == hw_p->rx_i_index)
1067 hw_p->rx_i_index = 0;
1069 /* printf("X"); /|* test-only *|/ */
1072 * free receive buffer only when
1073 * buffer has been handled (eth_rx)
1074 rx[i].ctrl |= MAL_RX_CTRL_EMPTY;
1078 } /* if EMACK_RXCHL */
1082 static int ppc_440x_eth_rx (struct eth_device *dev)
1087 EMAC_440GX_HW_PST hw_p = dev->priv;
1089 hw_p->is_receiving = 1; /* tell driver */
1093 * use ring buffer and
1094 * get index from rx buffer desciptor queue
1096 user_index = hw_p->rx_ready[hw_p->rx_u_index];
1097 if (user_index == -1) {
1099 break; /* nothing received - leave for() loop */
1103 mtmsr (msr & ~(MSR_EE));
1105 length = hw_p->rx[user_index].data_len;
1107 /* Pass the packet up to the protocol layers. */
1108 /* NetReceive(NetRxPackets[rxIdx], length - 4); */
1109 /* NetReceive(NetRxPackets[i], length); */
1110 NetReceive (NetRxPackets[user_index], length - 4);
1111 /* Free Recv Buffer */
1112 hw_p->rx[user_index].ctrl |= MAL_RX_CTRL_EMPTY;
1113 /* Free rx buffer descriptor queue */
1114 hw_p->rx_ready[hw_p->rx_u_index] = -1;
1116 if (NUM_RX_BUFF == hw_p->rx_u_index)
1117 hw_p->rx_u_index = 0;
1119 #ifdef INFO_440_ENET
1120 hw_p->stats.pkts_handled++;
1123 mtmsr (msr); /* Enable IRQ's */
1126 hw_p->is_receiving = 0; /* tell driver */
1131 int ppc_440x_eth_initialize (bd_t * bis)
1133 static int virgin = 0;
1135 struct eth_device *dev;
1138 EMAC_440GX_HW_PST hw = NULL;
1140 mfsdr (sdr_pfc1, pfc1);
1141 pfc1 &= ~(0x01e00000);
1143 mtsdr (sdr_pfc1, pfc1);
1144 /* set phy num and mode */
1145 bis->bi_phynum[0] = CONFIG_PHY_ADDR;
1146 bis->bi_phynum[1] = CONFIG_PHY1_ADDR;
1147 bis->bi_phynum[2] = CONFIG_PHY2_ADDR;
1148 bis->bi_phynum[3] = CONFIG_PHY3_ADDR;
1149 bis->bi_phymode[0] = 0;
1150 bis->bi_phymode[1] = 0;
1151 bis->bi_phymode[2] = 2;
1152 bis->bi_phymode[3] = 2;
1154 for (eth_num = 0; eth_num < EMAC_NUM_DEV; eth_num++) {
1156 /* See if we can actually bring up the interface, otherwise, skip it */
1159 if (memcmp (bis->bi_enetaddr, "\0\0\0\0\0\0", 6) == 0) {
1160 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1165 if (memcmp (bis->bi_enet1addr, "\0\0\0\0\0\0", 6) == 0) {
1166 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1171 if (memcmp (bis->bi_enet2addr, "\0\0\0\0\0\0", 6) == 0) {
1172 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1177 if (memcmp (bis->bi_enet3addr, "\0\0\0\0\0\0", 6) == 0) {
1178 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1183 if (memcmp (bis->bi_enetaddr, "\0\0\0\0\0\0", 6) == 0) {
1184 bis->bi_phymode[eth_num] = BI_PHYMODE_NONE;
1190 /* Allocate device structure */
1191 dev = (struct eth_device *) malloc (sizeof (*dev));
1193 printf ("ppc_440x_eth_initialize: "
1194 "Cannot allocate eth_device %d\n", eth_num);
1198 /* Allocate our private use data */
1199 hw = (EMAC_440GX_HW_PST) malloc (sizeof (*hw));
1201 printf ("ppc_440x_eth_initialize: "
1202 "Cannot allocate private hw data for eth_device %d",
1211 memcpy (dev->enetaddr, bis->bi_enetaddr, 6);
1214 hw->hw_addr = 0x100;
1215 memcpy (dev->enetaddr, bis->bi_enet1addr, 6);
1218 hw->hw_addr = 0x400;
1219 memcpy (dev->enetaddr, bis->bi_enet2addr, 6);
1222 hw->hw_addr = 0x600;
1223 memcpy (dev->enetaddr, bis->bi_enet3addr, 6);
1227 memcpy (dev->enetaddr, bis->bi_enetaddr, 6);
1231 hw->devnum = eth_num;
1233 sprintf (dev->name, "ppc_440x_eth%d", eth_num);
1234 dev->priv = (void *) hw;
1235 dev->init = ppc_440x_eth_init;
1236 dev->halt = ppc_440x_eth_halt;
1237 dev->send = ppc_440x_eth_send;
1238 dev->recv = ppc_440x_eth_rx;
1241 /* set the MAL IER ??? names may change with new spec ??? */
1243 MAL_IER_DE | MAL_IER_NE | MAL_IER_TE |
1244 MAL_IER_OPBE | MAL_IER_PLBE;
1245 mtdcr (malesr, 0xffffffff); /* clear pending interrupts */
1246 mtdcr (maltxdeir, 0xffffffff); /* clear pending interrupts */
1247 mtdcr (malrxdeir, 0xffffffff); /* clear pending interrupts */
1248 mtdcr (malier, mal_ier);
1250 /* install MAL interrupt handler */
1251 irq_install_handler (VECNUM_MS,
1252 (interrupt_handler_t *) enetInt,
1254 irq_install_handler (VECNUM_MTE,
1255 (interrupt_handler_t *) enetInt,
1257 irq_install_handler (VECNUM_MRE,
1258 (interrupt_handler_t *) enetInt,
1260 irq_install_handler (VECNUM_TXDE,
1261 (interrupt_handler_t *) enetInt,
1263 irq_install_handler (VECNUM_RXDE,
1264 (interrupt_handler_t *) enetInt,
1271 } /* end for each supported device */
1274 #endif /* CONFIG_440 && CONFIG_NET_MULTI */