3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) && \
33 defined(CONFIG_EEPRO100)
35 /* Ethernet chip registers.
37 #define SCBStatus 0 /* Rx/Command Unit Status *Word* */
38 #define SCBIntAckByte 1 /* Rx/Command Unit STAT/ACK byte */
39 #define SCBCmd 2 /* Rx/Command Unit Command *Word* */
40 #define SCBIntrCtlByte 3 /* Rx/Command Unit Intr.Control Byte */
41 #define SCBPointer 4 /* General purpose pointer. */
42 #define SCBPort 8 /* Misc. commands and operands. */
43 #define SCBflash 12 /* Flash memory control. */
44 #define SCBeeprom 14 /* EEPROM memory control. */
45 #define SCBCtrlMDI 16 /* MDI interface control. */
46 #define SCBEarlyRx 20 /* Early receive byte count. */
47 #define SCBGenControl 28 /* 82559 General Control Register */
48 #define SCBGenStatus 29 /* 82559 General Status register */
50 /* 82559 SCB status word defnitions
52 #define SCB_STATUS_CX 0x8000 /* CU finished command (transmit) */
53 #define SCB_STATUS_FR 0x4000 /* frame received */
54 #define SCB_STATUS_CNA 0x2000 /* CU left active state */
55 #define SCB_STATUS_RNR 0x1000 /* receiver left ready state */
56 #define SCB_STATUS_MDI 0x0800 /* MDI read/write cycle done */
57 #define SCB_STATUS_SWI 0x0400 /* software generated interrupt */
58 #define SCB_STATUS_FCP 0x0100 /* flow control pause interrupt */
60 #define SCB_INTACK_MASK 0xFD00 /* all the above */
62 #define SCB_INTACK_TX (SCB_STATUS_CX | SCB_STATUS_CNA)
63 #define SCB_INTACK_RX (SCB_STATUS_FR | SCB_STATUS_RNR)
65 /* System control block commands
69 #define CU_START 0x0010
70 #define CU_RESUME 0x0020
71 #define CU_STATSADDR 0x0040 /* Load Dump Statistics ctrs addr */
72 #define CU_SHOWSTATS 0x0050 /* Dump statistics counters. */
73 #define CU_ADDR_LOAD 0x0060 /* Base address to add to CU commands */
74 #define CU_DUMPSTATS 0x0070 /* Dump then reset stats counters. */
77 #define RUC_NOP 0x0000
78 #define RUC_START 0x0001
79 #define RUC_RESUME 0x0002
80 #define RUC_ABORT 0x0004
81 #define RUC_ADDR_LOAD 0x0006 /* (seems not to clear on acceptance) */
82 #define RUC_RESUMENR 0x0007
84 #define CU_CMD_MASK 0x00f0
85 #define RU_CMD_MASK 0x0007
87 #define SCB_M 0x0100 /* 0 = enable interrupt, 1 = disable */
88 #define SCB_SWI 0x0200 /* 1 - cause device to interrupt */
90 #define CU_STATUS_MASK 0x00C0
91 #define RU_STATUS_MASK 0x003C
93 #define RU_STATUS_IDLE (0<<2)
94 #define RU_STATUS_SUS (1<<2)
95 #define RU_STATUS_NORES (2<<2)
96 #define RU_STATUS_READY (4<<2)
97 #define RU_STATUS_NO_RBDS_SUS ((1<<2)|(8<<2))
98 #define RU_STATUS_NO_RBDS_NORES ((2<<2)|(8<<2))
99 #define RU_STATUS_NO_RBDS_READY ((4<<2)|(8<<2))
101 /* 82559 Port interface commands.
103 #define I82559_RESET 0x00000000 /* Software reset */
104 #define I82559_SELFTEST 0x00000001 /* 82559 Selftest command */
105 #define I82559_SELECTIVE_RESET 0x00000002
106 #define I82559_DUMP 0x00000003
107 #define I82559_DUMP_WAKEUP 0x00000007
109 /* 82559 Eeprom interface.
111 #define EE_SHIFT_CLK 0x01 /* EEPROM shift clock. */
112 #define EE_CS 0x02 /* EEPROM chip select. */
113 #define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */
114 #define EE_WRITE_0 0x01
115 #define EE_WRITE_1 0x05
116 #define EE_DATA_READ 0x08 /* EEPROM chip data out. */
117 #define EE_ENB (0x4800 | EE_CS)
118 #define EE_CMD_BITS 3
119 #define EE_DATA_BITS 16
121 /* The EEPROM commands include the alway-set leading bit.
123 #define EE_EWENB_CMD (4 << addr_len)
124 #define EE_WRITE_CMD (5 << addr_len)
125 #define EE_READ_CMD (6 << addr_len)
126 #define EE_ERASE_CMD (7 << addr_len)
128 /* Receive frame descriptors.
132 volatile u16 control;
133 volatile u32 link; /* struct RxFD * */
134 volatile u32 rx_buf_addr; /* void * */
137 volatile u8 data[PKTSIZE_ALIGN];
140 #define RFD_STATUS_C 0x8000 /* completion of received frame */
141 #define RFD_STATUS_OK 0x2000 /* frame received with no errors */
143 #define RFD_CONTROL_EL 0x8000 /* 1=last RFD in RFA */
144 #define RFD_CONTROL_S 0x4000 /* 1=suspend RU after receiving frame */
145 #define RFD_CONTROL_H 0x0010 /* 1=RFD is a header RFD */
146 #define RFD_CONTROL_SF 0x0008 /* 0=simplified, 1=flexible mode */
148 #define RFD_COUNT_MASK 0x3fff
149 #define RFD_COUNT_F 0x4000
150 #define RFD_COUNT_EOF 0x8000
152 #define RFD_RX_CRC 0x0800 /* crc error */
153 #define RFD_RX_ALIGNMENT 0x0400 /* alignment error */
154 #define RFD_RX_RESOURCE 0x0200 /* out of space, no resources */
155 #define RFD_RX_DMA_OVER 0x0100 /* DMA overrun */
156 #define RFD_RX_SHORT 0x0080 /* short frame error */
157 #define RFD_RX_LENGTH 0x0020
158 #define RFD_RX_ERROR 0x0010 /* receive error */
159 #define RFD_RX_NO_ADR_MATCH 0x0004 /* no address match */
160 #define RFD_RX_IA_MATCH 0x0002 /* individual address does not match */
161 #define RFD_RX_TCO 0x0001 /* TCO indication */
163 /* Transmit frame descriptors
165 struct TxFD { /* Transmit frame descriptor set. */
167 volatile u16 command;
168 volatile u32 link; /* void * */
169 volatile u32 tx_desc_addr; /* Always points to the tx_buf_addr element. */
172 volatile u32 tx_buf_addr0; /* void *, frame to be transmitted. */
173 volatile s32 tx_buf_size0; /* Length of Tx frame. */
174 volatile u32 tx_buf_addr1; /* void *, frame to be transmitted. */
175 volatile s32 tx_buf_size1; /* Length of Tx frame. */
178 #define TxCB_CMD_TRANSMIT 0x0004 /* transmit command */
179 #define TxCB_CMD_SF 0x0008 /* 0=simplified, 1=flexible mode */
180 #define TxCB_CMD_NC 0x0010 /* 0=CRC insert by controller */
181 #define TxCB_CMD_I 0x2000 /* generate interrupt on completion */
182 #define TxCB_CMD_S 0x4000 /* suspend on completion */
183 #define TxCB_CMD_EL 0x8000 /* last command block in CBL */
185 #define TxCB_COUNT_MASK 0x3fff
186 #define TxCB_COUNT_EOF 0x8000
188 /* The Speedo3 Rx and Tx frame/buffer descriptors.
190 struct descriptor { /* A generic descriptor. */
192 volatile u16 command;
193 volatile u32 link; /* struct descriptor * */
195 unsigned char params[0];
198 #define CFG_CMD_EL 0x8000
199 #define CFG_CMD_SUSPEND 0x4000
200 #define CFG_CMD_INT 0x2000
201 #define CFG_CMD_IAS 0x0001 /* individual address setup */
202 #define CFG_CMD_CONFIGURE 0x0002 /* configure */
204 #define CFG_STATUS_C 0x8000
205 #define CFG_STATUS_OK 0x2000
209 #define NUM_RX_DESC PKTBUFSRX
210 #define NUM_TX_DESC 1 /* Number of TX descriptors */
212 #define TOUT_LOOP 1000000
216 static struct RxFD rx_ring[NUM_RX_DESC]; /* RX descriptor ring */
217 static struct TxFD tx_ring[NUM_TX_DESC]; /* TX descriptor ring */
218 static int rx_next; /* RX descriptor ring pointer */
219 static int tx_next; /* TX descriptor ring pointer */
220 static int tx_threshold;
223 * The parameters for a CmdConfigure operation.
224 * There are so many options that it would be difficult to document
225 * each bit. We mostly use the default or recommended settings.
227 static const char i82557_config_cmd[] = {
228 22, 0x08, 0, 0, 0, 0, 0x32, 0x03, 1, /* 1=Use MII 0=Use AUI */
230 0xf2, 0x48, 0, 0x40, 0xf2, 0x80, /* 0x40=Force full-duplex */
233 static const char i82558_config_cmd[] = {
234 22, 0x08, 0, 1, 0, 0, 0x22, 0x03, 1, /* 1=Use MII 0=Use AUI */
235 0, 0x2E, 0, 0x60, 0x08, 0x88,
236 0x68, 0, 0x40, 0xf2, 0x84, /* Disable FC */
240 static void init_rx_ring (struct eth_device *dev);
241 static void purge_tx_ring (struct eth_device *dev);
243 static void read_hw_addr (struct eth_device *dev, bd_t * bis);
245 static int eepro100_init (struct eth_device *dev, bd_t * bis);
246 static int eepro100_send (struct eth_device *dev, volatile void *packet,
248 static int eepro100_recv (struct eth_device *dev);
249 static void eepro100_halt (struct eth_device *dev);
251 #define bus_to_phys(a) pci_mem_to_phys((pci_dev_t)dev->priv, a)
252 #define phys_to_bus(a) pci_phys_to_mem((pci_dev_t)dev->priv, a)
254 static inline int INW (struct eth_device *dev, u_long addr)
256 return le16_to_cpu (*(volatile u16 *) (addr + dev->iobase));
259 static inline void OUTW (struct eth_device *dev, int command, u_long addr)
261 *(volatile u16 *) ((addr + dev->iobase)) = cpu_to_le16 (command);
264 static inline void OUTL (struct eth_device *dev, int command, u_long addr)
266 *(volatile u32 *) ((addr + dev->iobase)) = cpu_to_le32 (command);
269 /* Wait for the chip get the command.
271 static int wait_for_eepro100 (struct eth_device *dev)
275 for (i = 0; INW (dev, SCBCmd) & (CU_CMD_MASK | RU_CMD_MASK); i++) {
276 if (i >= TOUT_LOOP) {
284 static struct pci_device_id supported[] = {
285 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82557},
286 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559},
287 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559ER},
291 int eepro100_initialize (bd_t * bis)
295 struct eth_device *dev;
302 if ((devno = pci_find_devices (supported, idx++)) < 0) {
306 pci_read_config_dword (devno, PCI_BASE_ADDRESS_0, &iobase);
310 printf ("eepro100: Intel i82559 PCI EtherExpressPro @0x%x\n",
314 pci_write_config_dword (devno,
316 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
318 /* Check if I/O accesses and Bus Mastering are enabled.
320 pci_read_config_dword (devno, PCI_COMMAND, &status);
321 if (!(status & PCI_COMMAND_MEMORY)) {
322 printf ("Error: Can not enable MEM access.\n");
326 if (!(status & PCI_COMMAND_MASTER)) {
327 printf ("Error: Can not enable Bus Mastering.\n");
331 dev = (struct eth_device *) malloc (sizeof *dev);
333 sprintf (dev->name, "i82559#%d", card_number);
334 dev->priv = (void *) devno; /* this have to come before bus_to_phys() */
335 dev->iobase = bus_to_phys (iobase);
336 dev->init = eepro100_init;
337 dev->halt = eepro100_halt;
338 dev->send = eepro100_send;
339 dev->recv = eepro100_recv;
345 /* Set the latency timer for value.
347 pci_write_config_byte (devno, PCI_LATENCY_TIMER, 0x20);
351 read_hw_addr (dev, bis);
358 static int eepro100_init (struct eth_device *dev, bd_t * bis)
362 struct descriptor *ias_cmd, *cfg_cmd;
364 /* Reset the ethernet controller
366 OUTL (dev, I82559_SELECTIVE_RESET, SCBPort);
369 OUTL (dev, I82559_RESET, SCBPort);
372 if (!wait_for_eepro100 (dev)) {
373 printf ("Error: Can not reset ethernet controller.\n");
376 OUTL (dev, 0, SCBPointer);
377 OUTW (dev, SCB_M | RUC_ADDR_LOAD, SCBCmd);
379 if (!wait_for_eepro100 (dev)) {
380 printf ("Error: Can not reset ethernet controller.\n");
383 OUTL (dev, 0, SCBPointer);
384 OUTW (dev, SCB_M | CU_ADDR_LOAD, SCBCmd);
386 /* Initialize Rx and Tx rings.
391 /* Tell the adapter where the RX ring is located.
393 if (!wait_for_eepro100 (dev)) {
394 printf ("Error: Can not reset ethernet controller.\n");
398 OUTL (dev, phys_to_bus ((u32) & rx_ring[rx_next]), SCBPointer);
399 OUTW (dev, SCB_M | RUC_START, SCBCmd);
401 /* Send the Configure frame */
403 tx_next = ((tx_next + 1) % NUM_TX_DESC);
405 cfg_cmd = (struct descriptor *) &tx_ring[tx_cur];
406 cfg_cmd->command = cpu_to_le16 ((CFG_CMD_SUSPEND | CFG_CMD_CONFIGURE));
408 cfg_cmd->link = cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_next]));
410 memcpy (cfg_cmd->params, i82558_config_cmd,
411 sizeof (i82558_config_cmd));
413 if (!wait_for_eepro100 (dev)) {
414 printf ("Error---CFG_CMD_CONFIGURE: Can not reset ethernet controller.\n");
418 OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
419 OUTW (dev, SCB_M | CU_START, SCBCmd);
422 !(le16_to_cpu (tx_ring[tx_cur].status) & CFG_STATUS_C);
424 if (i >= TOUT_LOOP) {
425 printf ("%s: Tx error buffer not ready\n", dev->name);
430 if (!(le16_to_cpu (tx_ring[tx_cur].status) & CFG_STATUS_OK)) {
431 printf ("TX error status = 0x%08X\n",
432 le16_to_cpu (tx_ring[tx_cur].status));
436 /* Send the Individual Address Setup frame
439 tx_next = ((tx_next + 1) % NUM_TX_DESC);
441 ias_cmd = (struct descriptor *) &tx_ring[tx_cur];
442 ias_cmd->command = cpu_to_le16 ((CFG_CMD_SUSPEND | CFG_CMD_IAS));
444 ias_cmd->link = cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_next]));
446 memcpy (ias_cmd->params, dev->enetaddr, 6);
448 /* Tell the adapter where the TX ring is located.
450 if (!wait_for_eepro100 (dev)) {
451 printf ("Error: Can not reset ethernet controller.\n");
455 OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
456 OUTW (dev, SCB_M | CU_START, SCBCmd);
458 for (i = 0; !(le16_to_cpu (tx_ring[tx_cur].status) & CFG_STATUS_C);
460 if (i >= TOUT_LOOP) {
461 printf ("%s: Tx error buffer not ready\n",
467 if (!(le16_to_cpu (tx_ring[tx_cur].status) & CFG_STATUS_OK)) {
468 printf ("TX error status = 0x%08X\n",
469 le16_to_cpu (tx_ring[tx_cur].status));
479 static int eepro100_send (struct eth_device *dev, volatile void *packet, int length)
485 printf ("%s: bad packet size: %d\n", dev->name, length);
490 tx_next = (tx_next + 1) % NUM_TX_DESC;
492 tx_ring[tx_cur].command = cpu_to_le16 ( TxCB_CMD_TRANSMIT |
496 tx_ring[tx_cur].status = 0;
497 tx_ring[tx_cur].count = cpu_to_le32 (tx_threshold);
498 tx_ring[tx_cur].link =
499 cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_next]));
500 tx_ring[tx_cur].tx_desc_addr =
501 cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_cur].tx_buf_addr0));
502 tx_ring[tx_cur].tx_buf_addr0 =
503 cpu_to_le32 (phys_to_bus ((u_long) packet));
504 tx_ring[tx_cur].tx_buf_size0 = cpu_to_le32 (length);
506 if (!wait_for_eepro100 (dev)) {
507 printf ("%s: Tx error ethernet controller not ready.\n",
514 OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
515 OUTW (dev, SCB_M | CU_START, SCBCmd);
517 for (i = 0; !(le16_to_cpu (tx_ring[tx_cur].status) & CFG_STATUS_C);
519 if (i >= TOUT_LOOP) {
520 printf ("%s: Tx error buffer not ready\n", dev->name);
525 if (!(le16_to_cpu (tx_ring[tx_cur].status) & CFG_STATUS_OK)) {
526 printf ("TX error status = 0x%08X\n",
527 le16_to_cpu (tx_ring[tx_cur].status));
537 static int eepro100_recv (struct eth_device *dev)
540 int rx_prev, length = 0;
542 stat = INW (dev, SCBStatus);
543 OUTW (dev, stat & SCB_STATUS_RNR, SCBStatus);
546 status = le16_to_cpu (rx_ring[rx_next].status);
548 if (!(status & RFD_STATUS_C)) {
552 /* Valid frame status.
554 if ((status & RFD_STATUS_OK)) {
555 /* A valid frame received.
557 length = le32_to_cpu (rx_ring[rx_next].count) & 0x3fff;
559 /* Pass the packet up to the protocol
562 NetReceive (rx_ring[rx_next].data, length);
564 /* There was an error.
566 printf ("RX error status = 0x%08X\n", status);
569 rx_ring[rx_next].control = cpu_to_le16 (RFD_CONTROL_S);
570 rx_ring[rx_next].status = 0;
571 rx_ring[rx_next].count = cpu_to_le32 (PKTSIZE_ALIGN << 16);
573 rx_prev = (rx_next + NUM_RX_DESC - 1) % NUM_RX_DESC;
574 rx_ring[rx_prev].control = 0;
576 /* Update entry information.
578 rx_next = (rx_next + 1) % NUM_RX_DESC;
581 if (stat & SCB_STATUS_RNR) {
583 printf ("%s: Receiver is not ready, restart it !\n", dev->name);
585 /* Reinitialize Rx ring.
589 if (!wait_for_eepro100 (dev)) {
590 printf ("Error: Can not restart ethernet controller.\n");
594 OUTL (dev, phys_to_bus ((u32) & rx_ring[rx_next]), SCBPointer);
595 OUTW (dev, SCB_M | RUC_START, SCBCmd);
602 static void eepro100_halt (struct eth_device *dev)
604 /* Reset the ethernet controller
606 OUTL (dev, I82559_SELECTIVE_RESET, SCBPort);
609 OUTL (dev, I82559_RESET, SCBPort);
612 if (!wait_for_eepro100 (dev)) {
613 printf ("Error: Can not reset ethernet controller.\n");
616 OUTL (dev, 0, SCBPointer);
617 OUTW (dev, SCB_M | RUC_ADDR_LOAD, SCBCmd);
619 if (!wait_for_eepro100 (dev)) {
620 printf ("Error: Can not reset ethernet controller.\n");
623 OUTL (dev, 0, SCBPointer);
624 OUTW (dev, SCB_M | CU_ADDR_LOAD, SCBCmd);
632 static int read_eeprom (struct eth_device *dev, int location, int addr_len)
634 unsigned short retval = 0;
635 int read_cmd = location | EE_READ_CMD;
638 OUTW (dev, EE_ENB & ~EE_CS, SCBeeprom);
639 OUTW (dev, EE_ENB, SCBeeprom);
641 /* Shift the read command bits out. */
642 for (i = 12; i >= 0; i--) {
643 short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
645 OUTW (dev, EE_ENB | dataval, SCBeeprom);
647 OUTW (dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
650 OUTW (dev, EE_ENB, SCBeeprom);
652 for (i = 15; i >= 0; i--) {
653 OUTW (dev, EE_ENB | EE_SHIFT_CLK, SCBeeprom);
655 retval = (retval << 1) |
656 ((INW (dev, SCBeeprom) & EE_DATA_READ) ? 1 : 0);
657 OUTW (dev, EE_ENB, SCBeeprom);
661 /* Terminate the EEPROM access. */
662 OUTW (dev, EE_ENB & ~EE_CS, SCBeeprom);
666 #ifdef CONFIG_EEPRO100_SROM_WRITE
667 int eepro100_write_eeprom (struct eth_device* dev, int location, int addr_len, unsigned short data)
669 unsigned short dataval;
670 int enable_cmd = 0x3f | EE_EWENB_CMD;
671 int write_cmd = location | EE_WRITE_CMD;
673 unsigned long datalong, tmplong;
675 OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
677 OUTW(dev, EE_ENB, SCBeeprom);
679 /* Shift the enable command bits out. */
680 for (i = (addr_len+EE_CMD_BITS-1); i >= 0; i--)
682 dataval = (enable_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
683 OUTW(dev, EE_ENB | dataval, SCBeeprom);
685 OUTW(dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
689 OUTW(dev, EE_ENB, SCBeeprom);
691 OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
693 OUTW(dev, EE_ENB, SCBeeprom);
696 /* Shift the write command bits out. */
697 for (i = (addr_len+EE_CMD_BITS-1); i >= 0; i--)
699 dataval = (write_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
700 OUTW(dev, EE_ENB | dataval, SCBeeprom);
702 OUTW(dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
707 datalong= (unsigned long) ((((data) & 0x00ff) << 8) | ( (data) >> 8));
709 for (i = 0; i< EE_DATA_BITS; i++)
711 /* Extract and move data bit to bit DI */
712 dataval = ((datalong & 0x8000)>>13) ? EE_DATA_WRITE : 0;
714 OUTW(dev, EE_ENB | dataval, SCBeeprom);
716 OUTW(dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
718 OUTW(dev, EE_ENB | dataval, SCBeeprom);
721 datalong = datalong << 1; /* Adjust significant data bit*/
724 /* Finish up command (toggle CS) */
725 OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
726 udelay(1); /* delay for more than 250 ns */
727 OUTW(dev, EE_ENB, SCBeeprom);
729 /* Wait for programming ready (D0 = 1) */
733 dataval = INW(dev, SCBeeprom);
734 if (dataval & EE_DATA_READ)
742 printf ("Write i82559 eeprom timed out (100 ms waiting for data ready.\n");
746 /* Terminate the EEPROM access. */
747 OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
753 static void init_rx_ring (struct eth_device *dev)
757 for (i = 0; i < NUM_RX_DESC; i++) {
758 rx_ring[i].status = 0;
760 (i == NUM_RX_DESC - 1) ? cpu_to_le16 (RFD_CONTROL_S) : 0;
762 cpu_to_le32 (phys_to_bus
763 ((u32) & rx_ring[(i + 1) % NUM_RX_DESC]));
764 rx_ring[i].rx_buf_addr = 0xffffffff;
765 rx_ring[i].count = cpu_to_le32 (PKTSIZE_ALIGN << 16);
771 static void purge_tx_ring (struct eth_device *dev)
776 tx_threshold = 0x01208000;
778 for (i = 0; i < NUM_TX_DESC; i++) {
779 tx_ring[i].status = 0;
780 tx_ring[i].command = 0;
782 tx_ring[i].tx_desc_addr = 0;
783 tx_ring[i].count = 0;
785 tx_ring[i].tx_buf_addr0 = 0;
786 tx_ring[i].tx_buf_size0 = 0;
787 tx_ring[i].tx_buf_addr1 = 0;
788 tx_ring[i].tx_buf_size1 = 0;
792 static void read_hw_addr (struct eth_device *dev, bd_t * bis)
797 int addr_len = read_eeprom (dev, 0, 6) == 0xffff ? 8 : 6;
799 for (j = 0, i = 0; i < 0x40; i++) {
800 u16 value = read_eeprom (dev, i, addr_len);
805 dev->enetaddr[j++] = value;
806 dev->enetaddr[j++] = value >> 8;
811 memset (dev->enetaddr, 0, ETH_ALEN);
813 printf ("%s: Invalid EEPROM checksum %#4.4x, "
814 "check settings before activating this device!\n",