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,
34 /* Ethernet chip registers.
36 #define SCBStatus 0 /* Rx/Command Unit Status *Word* */
37 #define SCBIntAckByte 1 /* Rx/Command Unit STAT/ACK byte */
38 #define SCBCmd 2 /* Rx/Command Unit Command *Word* */
39 #define SCBIntrCtlByte 3 /* Rx/Command Unit Intr.Control Byte */
40 #define SCBPointer 4 /* General purpose pointer. */
41 #define SCBPort 8 /* Misc. commands and operands. */
42 #define SCBflash 12 /* Flash memory control. */
43 #define SCBeeprom 14 /* EEPROM memory control. */
44 #define SCBCtrlMDI 16 /* MDI interface control. */
45 #define SCBEarlyRx 20 /* Early receive byte count. */
46 #define SCBGenControl 28 /* 82559 General Control Register */
47 #define SCBGenStatus 29 /* 82559 General Status register */
49 /* 82559 SCB status word defnitions
51 #define SCB_STATUS_CX 0x8000 /* CU finished command (transmit) */
52 #define SCB_STATUS_FR 0x4000 /* frame received */
53 #define SCB_STATUS_CNA 0x2000 /* CU left active state */
54 #define SCB_STATUS_RNR 0x1000 /* receiver left ready state */
55 #define SCB_STATUS_MDI 0x0800 /* MDI read/write cycle done */
56 #define SCB_STATUS_SWI 0x0400 /* software generated interrupt */
57 #define SCB_STATUS_FCP 0x0100 /* flow control pause interrupt */
59 #define SCB_INTACK_MASK 0xFD00 /* all the above */
61 #define SCB_INTACK_TX (SCB_STATUS_CX | SCB_STATUS_CNA)
62 #define SCB_INTACK_RX (SCB_STATUS_FR | SCB_STATUS_RNR)
64 /* System control block commands
68 #define CU_START 0x0010
69 #define CU_RESUME 0x0020
70 #define CU_STATSADDR 0x0040 /* Load Dump Statistics ctrs addr */
71 #define CU_SHOWSTATS 0x0050 /* Dump statistics counters. */
72 #define CU_ADDR_LOAD 0x0060 /* Base address to add to CU commands */
73 #define CU_DUMPSTATS 0x0070 /* Dump then reset stats counters. */
76 #define RUC_NOP 0x0000
77 #define RUC_START 0x0001
78 #define RUC_RESUME 0x0002
79 #define RUC_ABORT 0x0004
80 #define RUC_ADDR_LOAD 0x0006 /* (seems not to clear on acceptance) */
81 #define RUC_RESUMENR 0x0007
83 #define CU_CMD_MASK 0x00f0
84 #define RU_CMD_MASK 0x0007
86 #define SCB_M 0x0100 /* 0 = enable interrupt, 1 = disable */
87 #define SCB_SWI 0x0200 /* 1 - cause device to interrupt */
89 #define CU_STATUS_MASK 0x00C0
90 #define RU_STATUS_MASK 0x003C
92 #define RU_STATUS_IDLE (0<<2)
93 #define RU_STATUS_SUS (1<<2)
94 #define RU_STATUS_NORES (2<<2)
95 #define RU_STATUS_READY (4<<2)
96 #define RU_STATUS_NO_RBDS_SUS ((1<<2)|(8<<2))
97 #define RU_STATUS_NO_RBDS_NORES ((2<<2)|(8<<2))
98 #define RU_STATUS_NO_RBDS_READY ((4<<2)|(8<<2))
100 /* 82559 Port interface commands.
102 #define I82559_RESET 0x00000000 /* Software reset */
103 #define I82559_SELFTEST 0x00000001 /* 82559 Selftest command */
104 #define I82559_SELECTIVE_RESET 0x00000002
105 #define I82559_DUMP 0x00000003
106 #define I82559_DUMP_WAKEUP 0x00000007
108 /* 82559 Eeprom interface.
110 #define EE_SHIFT_CLK 0x01 /* EEPROM shift clock. */
111 #define EE_CS 0x02 /* EEPROM chip select. */
112 #define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */
113 #define EE_WRITE_0 0x01
114 #define EE_WRITE_1 0x05
115 #define EE_DATA_READ 0x08 /* EEPROM chip data out. */
116 #define EE_ENB (0x4800 | EE_CS)
117 #define EE_CMD_BITS 3
118 #define EE_DATA_BITS 16
120 /* The EEPROM commands include the alway-set leading bit.
122 #define EE_EWENB_CMD (4 << addr_len)
123 #define EE_WRITE_CMD (5 << addr_len)
124 #define EE_READ_CMD (6 << addr_len)
125 #define EE_ERASE_CMD (7 << addr_len)
127 /* Receive frame descriptors.
131 volatile u16 control;
132 volatile u32 link; /* struct RxFD * */
133 volatile u32 rx_buf_addr; /* void * */
136 volatile u8 data[PKTSIZE_ALIGN];
139 #define RFD_STATUS_C 0x8000 /* completion of received frame */
140 #define RFD_STATUS_OK 0x2000 /* frame received with no errors */
142 #define RFD_CONTROL_EL 0x8000 /* 1=last RFD in RFA */
143 #define RFD_CONTROL_S 0x4000 /* 1=suspend RU after receiving frame */
144 #define RFD_CONTROL_H 0x0010 /* 1=RFD is a header RFD */
145 #define RFD_CONTROL_SF 0x0008 /* 0=simplified, 1=flexible mode */
147 #define RFD_COUNT_MASK 0x3fff
148 #define RFD_COUNT_F 0x4000
149 #define RFD_COUNT_EOF 0x8000
151 #define RFD_RX_CRC 0x0800 /* crc error */
152 #define RFD_RX_ALIGNMENT 0x0400 /* alignment error */
153 #define RFD_RX_RESOURCE 0x0200 /* out of space, no resources */
154 #define RFD_RX_DMA_OVER 0x0100 /* DMA overrun */
155 #define RFD_RX_SHORT 0x0080 /* short frame error */
156 #define RFD_RX_LENGTH 0x0020
157 #define RFD_RX_ERROR 0x0010 /* receive error */
158 #define RFD_RX_NO_ADR_MATCH 0x0004 /* no address match */
159 #define RFD_RX_IA_MATCH 0x0002 /* individual address does not match */
160 #define RFD_RX_TCO 0x0001 /* TCO indication */
162 /* Transmit frame descriptors
164 struct TxFD { /* Transmit frame descriptor set. */
166 volatile u16 command;
167 volatile u32 link; /* void * */
168 volatile u32 tx_desc_addr; /* Always points to the tx_buf_addr element. */
171 volatile u32 tx_buf_addr0; /* void *, frame to be transmitted. */
172 volatile s32 tx_buf_size0; /* Length of Tx frame. */
173 volatile u32 tx_buf_addr1; /* void *, frame to be transmitted. */
174 volatile s32 tx_buf_size1; /* Length of Tx frame. */
177 #define TxCB_CMD_TRANSMIT 0x0004 /* transmit command */
178 #define TxCB_CMD_SF 0x0008 /* 0=simplified, 1=flexible mode */
179 #define TxCB_CMD_NC 0x0010 /* 0=CRC insert by controller */
180 #define TxCB_CMD_I 0x2000 /* generate interrupt on completion */
181 #define TxCB_CMD_S 0x4000 /* suspend on completion */
182 #define TxCB_CMD_EL 0x8000 /* last command block in CBL */
184 #define TxCB_COUNT_MASK 0x3fff
185 #define TxCB_COUNT_EOF 0x8000
187 /* The Speedo3 Rx and Tx frame/buffer descriptors.
189 struct descriptor { /* A generic descriptor. */
191 volatile u16 command;
192 volatile u32 link; /* struct descriptor * */
194 unsigned char params[0];
197 #define CONFIG_SYS_CMD_EL 0x8000
198 #define CONFIG_SYS_CMD_SUSPEND 0x4000
199 #define CONFIG_SYS_CMD_INT 0x2000
200 #define CONFIG_SYS_CMD_IAS 0x0001 /* individual address setup */
201 #define CONFIG_SYS_CMD_CONFIGURE 0x0002 /* configure */
203 #define CONFIG_SYS_STATUS_C 0x8000
204 #define CONFIG_SYS_STATUS_OK 0x2000
208 #define NUM_RX_DESC PKTBUFSRX
209 #define NUM_TX_DESC 1 /* Number of TX descriptors */
211 #define TOUT_LOOP 1000000
215 static struct RxFD rx_ring[NUM_RX_DESC]; /* RX descriptor ring */
216 static struct TxFD tx_ring[NUM_TX_DESC]; /* TX descriptor ring */
217 static int rx_next; /* RX descriptor ring pointer */
218 static int tx_next; /* TX descriptor ring pointer */
219 static int tx_threshold;
222 * The parameters for a CmdConfigure operation.
223 * There are so many options that it would be difficult to document
224 * each bit. We mostly use the default or recommended settings.
226 static const char i82557_config_cmd[] = {
227 22, 0x08, 0, 0, 0, 0, 0x32, 0x03, 1, /* 1=Use MII 0=Use AUI */
229 0xf2, 0x48, 0, 0x40, 0xf2, 0x80, /* 0x40=Force full-duplex */
232 static const char i82558_config_cmd[] = {
233 22, 0x08, 0, 1, 0, 0, 0x22, 0x03, 1, /* 1=Use MII 0=Use AUI */
234 0, 0x2E, 0, 0x60, 0x08, 0x88,
235 0x68, 0, 0x40, 0xf2, 0x84, /* Disable FC */
239 static void init_rx_ring (struct eth_device *dev);
240 static void purge_tx_ring (struct eth_device *dev);
242 static void read_hw_addr (struct eth_device *dev, bd_t * bis);
244 static int eepro100_init (struct eth_device *dev, bd_t * bis);
245 static int eepro100_send(struct eth_device *dev, void *packet, int length);
246 static int eepro100_recv (struct eth_device *dev);
247 static void eepro100_halt (struct eth_device *dev);
249 #if defined(CONFIG_E500) || defined(CONFIG_DB64360) || defined(CONFIG_DB64460)
250 #define bus_to_phys(a) (a)
251 #define phys_to_bus(a) (a)
253 #define bus_to_phys(a) pci_mem_to_phys((pci_dev_t)dev->priv, a)
254 #define phys_to_bus(a) pci_phys_to_mem((pci_dev_t)dev->priv, a)
257 static inline int INW (struct eth_device *dev, u_long addr)
259 return le16_to_cpu (*(volatile u16 *) (addr + dev->iobase));
262 static inline void OUTW (struct eth_device *dev, int command, u_long addr)
264 *(volatile u16 *) ((addr + dev->iobase)) = cpu_to_le16 (command);
267 static inline void OUTL (struct eth_device *dev, int command, u_long addr)
269 *(volatile u32 *) ((addr + dev->iobase)) = cpu_to_le32 (command);
272 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
273 static inline int INL (struct eth_device *dev, u_long addr)
275 return le32_to_cpu (*(volatile u32 *) (addr + dev->iobase));
278 static int get_phyreg (struct eth_device *dev, unsigned char addr,
279 unsigned char reg, unsigned short *value)
284 /* read requested data */
285 cmd = (2 << 26) | ((addr & 0x1f) << 21) | ((reg & 0x1f) << 16);
286 OUTL (dev, cmd, SCBCtrlMDI);
290 cmd = INL (dev, SCBCtrlMDI);
291 } while (!(cmd & (1 << 28)) && (--timeout));
296 *value = (unsigned short) (cmd & 0xffff);
301 static int set_phyreg (struct eth_device *dev, unsigned char addr,
302 unsigned char reg, unsigned short value)
307 /* write requested data */
308 cmd = (1 << 26) | ((addr & 0x1f) << 21) | ((reg & 0x1f) << 16);
309 OUTL (dev, cmd | value, SCBCtrlMDI);
311 while (!(INL (dev, SCBCtrlMDI) & (1 << 28)) && (--timeout))
320 /* Check if given phyaddr is valid, i.e. there is a PHY connected.
321 * Do this by checking model value field from ID2 register.
323 static struct eth_device* verify_phyaddr (const char *devname,
326 struct eth_device *dev;
327 unsigned short value;
330 dev = eth_get_dev_by_name(devname);
332 printf("%s: no such device\n", devname);
336 /* read id2 register */
337 if (get_phyreg(dev, addr, MII_PHYSID2, &value) != 0) {
338 printf("%s: mii read timeout!\n", devname);
343 model = (unsigned char)((value >> 4) & 0x003f);
346 printf("%s: no PHY at address %d\n", devname, addr);
353 static int eepro100_miiphy_read(const char *devname, unsigned char addr,
354 unsigned char reg, unsigned short *value)
356 struct eth_device *dev;
358 dev = verify_phyaddr(devname, addr);
362 if (get_phyreg(dev, addr, reg, value) != 0) {
363 printf("%s: mii read timeout!\n", devname);
370 static int eepro100_miiphy_write(const char *devname, unsigned char addr,
371 unsigned char reg, unsigned short value)
373 struct eth_device *dev;
375 dev = verify_phyaddr(devname, addr);
379 if (set_phyreg(dev, addr, reg, value) != 0) {
380 printf("%s: mii write timeout!\n", devname);
389 /* Wait for the chip get the command.
391 static int wait_for_eepro100 (struct eth_device *dev)
395 for (i = 0; INW (dev, SCBCmd) & (CU_CMD_MASK | RU_CMD_MASK); i++) {
396 if (i >= TOUT_LOOP) {
404 static struct pci_device_id supported[] = {
405 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82557},
406 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559},
407 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559ER},
411 int eepro100_initialize (bd_t * bis)
415 struct eth_device *dev;
422 if ((devno = pci_find_devices (supported, idx++)) < 0) {
426 pci_read_config_dword (devno, PCI_BASE_ADDRESS_0, &iobase);
430 printf ("eepro100: Intel i82559 PCI EtherExpressPro @0x%x\n",
434 pci_write_config_dword (devno,
436 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
438 /* Check if I/O accesses and Bus Mastering are enabled.
440 pci_read_config_dword (devno, PCI_COMMAND, &status);
441 if (!(status & PCI_COMMAND_MEMORY)) {
442 printf ("Error: Can not enable MEM access.\n");
446 if (!(status & PCI_COMMAND_MASTER)) {
447 printf ("Error: Can not enable Bus Mastering.\n");
451 dev = (struct eth_device *) malloc (sizeof *dev);
453 printf("eepro100: Can not allocate memory\n");
456 memset(dev, 0, sizeof(*dev));
458 sprintf (dev->name, "i82559#%d", card_number);
459 dev->priv = (void *) devno; /* this have to come before bus_to_phys() */
460 dev->iobase = bus_to_phys (iobase);
461 dev->init = eepro100_init;
462 dev->halt = eepro100_halt;
463 dev->send = eepro100_send;
464 dev->recv = eepro100_recv;
468 #if defined (CONFIG_MII) || defined(CONFIG_CMD_MII)
469 /* register mii command access routines */
470 miiphy_register(dev->name,
471 eepro100_miiphy_read, eepro100_miiphy_write);
476 /* Set the latency timer for value.
478 pci_write_config_byte (devno, PCI_LATENCY_TIMER, 0x20);
482 read_hw_addr (dev, bis);
489 static int eepro100_init (struct eth_device *dev, bd_t * bis)
493 struct descriptor *ias_cmd, *cfg_cmd;
495 /* Reset the ethernet controller
497 OUTL (dev, I82559_SELECTIVE_RESET, SCBPort);
500 OUTL (dev, I82559_RESET, SCBPort);
503 if (!wait_for_eepro100 (dev)) {
504 printf ("Error: Can not reset ethernet controller.\n");
507 OUTL (dev, 0, SCBPointer);
508 OUTW (dev, SCB_M | RUC_ADDR_LOAD, SCBCmd);
510 if (!wait_for_eepro100 (dev)) {
511 printf ("Error: Can not reset ethernet controller.\n");
514 OUTL (dev, 0, SCBPointer);
515 OUTW (dev, SCB_M | CU_ADDR_LOAD, SCBCmd);
517 /* Initialize Rx and Tx rings.
522 /* Tell the adapter where the RX ring is located.
524 if (!wait_for_eepro100 (dev)) {
525 printf ("Error: Can not reset ethernet controller.\n");
529 OUTL (dev, phys_to_bus ((u32) & rx_ring[rx_next]), SCBPointer);
530 OUTW (dev, SCB_M | RUC_START, SCBCmd);
532 /* Send the Configure frame */
534 tx_next = ((tx_next + 1) % NUM_TX_DESC);
536 cfg_cmd = (struct descriptor *) &tx_ring[tx_cur];
537 cfg_cmd->command = cpu_to_le16 ((CONFIG_SYS_CMD_SUSPEND | CONFIG_SYS_CMD_CONFIGURE));
539 cfg_cmd->link = cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_next]));
541 memcpy (cfg_cmd->params, i82558_config_cmd,
542 sizeof (i82558_config_cmd));
544 if (!wait_for_eepro100 (dev)) {
545 printf ("Error---CONFIG_SYS_CMD_CONFIGURE: Can not reset ethernet controller.\n");
549 OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
550 OUTW (dev, SCB_M | CU_START, SCBCmd);
553 !(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_C);
555 if (i >= TOUT_LOOP) {
556 printf ("%s: Tx error buffer not ready\n", dev->name);
561 if (!(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_OK)) {
562 printf ("TX error status = 0x%08X\n",
563 le16_to_cpu (tx_ring[tx_cur].status));
567 /* Send the Individual Address Setup frame
570 tx_next = ((tx_next + 1) % NUM_TX_DESC);
572 ias_cmd = (struct descriptor *) &tx_ring[tx_cur];
573 ias_cmd->command = cpu_to_le16 ((CONFIG_SYS_CMD_SUSPEND | CONFIG_SYS_CMD_IAS));
575 ias_cmd->link = cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_next]));
577 memcpy (ias_cmd->params, dev->enetaddr, 6);
579 /* Tell the adapter where the TX ring is located.
581 if (!wait_for_eepro100 (dev)) {
582 printf ("Error: Can not reset ethernet controller.\n");
586 OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
587 OUTW (dev, SCB_M | CU_START, SCBCmd);
589 for (i = 0; !(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_C);
591 if (i >= TOUT_LOOP) {
592 printf ("%s: Tx error buffer not ready\n",
598 if (!(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_OK)) {
599 printf ("TX error status = 0x%08X\n",
600 le16_to_cpu (tx_ring[tx_cur].status));
610 static int eepro100_send(struct eth_device *dev, void *packet, int length)
616 printf ("%s: bad packet size: %d\n", dev->name, length);
621 tx_next = (tx_next + 1) % NUM_TX_DESC;
623 tx_ring[tx_cur].command = cpu_to_le16 ( TxCB_CMD_TRANSMIT |
627 tx_ring[tx_cur].status = 0;
628 tx_ring[tx_cur].count = cpu_to_le32 (tx_threshold);
629 tx_ring[tx_cur].link =
630 cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_next]));
631 tx_ring[tx_cur].tx_desc_addr =
632 cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_cur].tx_buf_addr0));
633 tx_ring[tx_cur].tx_buf_addr0 =
634 cpu_to_le32 (phys_to_bus ((u_long) packet));
635 tx_ring[tx_cur].tx_buf_size0 = cpu_to_le32 (length);
637 if (!wait_for_eepro100 (dev)) {
638 printf ("%s: Tx error ethernet controller not ready.\n",
645 OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
646 OUTW (dev, SCB_M | CU_START, SCBCmd);
648 for (i = 0; !(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_C);
650 if (i >= TOUT_LOOP) {
651 printf ("%s: Tx error buffer not ready\n", dev->name);
656 if (!(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_OK)) {
657 printf ("TX error status = 0x%08X\n",
658 le16_to_cpu (tx_ring[tx_cur].status));
668 static int eepro100_recv (struct eth_device *dev)
671 int rx_prev, length = 0;
673 stat = INW (dev, SCBStatus);
674 OUTW (dev, stat & SCB_STATUS_RNR, SCBStatus);
677 status = le16_to_cpu (rx_ring[rx_next].status);
679 if (!(status & RFD_STATUS_C)) {
683 /* Valid frame status.
685 if ((status & RFD_STATUS_OK)) {
686 /* A valid frame received.
688 length = le32_to_cpu (rx_ring[rx_next].count) & 0x3fff;
690 /* Pass the packet up to the protocol
693 NetReceive((u8 *)rx_ring[rx_next].data, length);
695 /* There was an error.
697 printf ("RX error status = 0x%08X\n", status);
700 rx_ring[rx_next].control = cpu_to_le16 (RFD_CONTROL_S);
701 rx_ring[rx_next].status = 0;
702 rx_ring[rx_next].count = cpu_to_le32 (PKTSIZE_ALIGN << 16);
704 rx_prev = (rx_next + NUM_RX_DESC - 1) % NUM_RX_DESC;
705 rx_ring[rx_prev].control = 0;
707 /* Update entry information.
709 rx_next = (rx_next + 1) % NUM_RX_DESC;
712 if (stat & SCB_STATUS_RNR) {
714 printf ("%s: Receiver is not ready, restart it !\n", dev->name);
716 /* Reinitialize Rx ring.
720 if (!wait_for_eepro100 (dev)) {
721 printf ("Error: Can not restart ethernet controller.\n");
725 OUTL (dev, phys_to_bus ((u32) & rx_ring[rx_next]), SCBPointer);
726 OUTW (dev, SCB_M | RUC_START, SCBCmd);
733 static void eepro100_halt (struct eth_device *dev)
735 /* Reset the ethernet controller
737 OUTL (dev, I82559_SELECTIVE_RESET, SCBPort);
740 OUTL (dev, I82559_RESET, SCBPort);
743 if (!wait_for_eepro100 (dev)) {
744 printf ("Error: Can not reset ethernet controller.\n");
747 OUTL (dev, 0, SCBPointer);
748 OUTW (dev, SCB_M | RUC_ADDR_LOAD, SCBCmd);
750 if (!wait_for_eepro100 (dev)) {
751 printf ("Error: Can not reset ethernet controller.\n");
754 OUTL (dev, 0, SCBPointer);
755 OUTW (dev, SCB_M | CU_ADDR_LOAD, SCBCmd);
763 static int read_eeprom (struct eth_device *dev, int location, int addr_len)
765 unsigned short retval = 0;
766 int read_cmd = location | EE_READ_CMD;
769 OUTW (dev, EE_ENB & ~EE_CS, SCBeeprom);
770 OUTW (dev, EE_ENB, SCBeeprom);
772 /* Shift the read command bits out. */
773 for (i = 12; i >= 0; i--) {
774 short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
776 OUTW (dev, EE_ENB | dataval, SCBeeprom);
778 OUTW (dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
781 OUTW (dev, EE_ENB, SCBeeprom);
783 for (i = 15; i >= 0; i--) {
784 OUTW (dev, EE_ENB | EE_SHIFT_CLK, SCBeeprom);
786 retval = (retval << 1) |
787 ((INW (dev, SCBeeprom) & EE_DATA_READ) ? 1 : 0);
788 OUTW (dev, EE_ENB, SCBeeprom);
792 /* Terminate the EEPROM access. */
793 OUTW (dev, EE_ENB & ~EE_CS, SCBeeprom);
797 #ifdef CONFIG_EEPRO100_SROM_WRITE
798 int eepro100_write_eeprom (struct eth_device* dev, int location, int addr_len, unsigned short data)
800 unsigned short dataval;
801 int enable_cmd = 0x3f | EE_EWENB_CMD;
802 int write_cmd = location | EE_WRITE_CMD;
804 unsigned long datalong, tmplong;
806 OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
808 OUTW(dev, EE_ENB, SCBeeprom);
810 /* Shift the enable command bits out. */
811 for (i = (addr_len+EE_CMD_BITS-1); i >= 0; i--)
813 dataval = (enable_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
814 OUTW(dev, EE_ENB | dataval, SCBeeprom);
816 OUTW(dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
820 OUTW(dev, EE_ENB, SCBeeprom);
822 OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
824 OUTW(dev, EE_ENB, SCBeeprom);
827 /* Shift the write command bits out. */
828 for (i = (addr_len+EE_CMD_BITS-1); i >= 0; i--)
830 dataval = (write_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
831 OUTW(dev, EE_ENB | dataval, SCBeeprom);
833 OUTW(dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
838 datalong= (unsigned long) ((((data) & 0x00ff) << 8) | ( (data) >> 8));
840 for (i = 0; i< EE_DATA_BITS; i++)
842 /* Extract and move data bit to bit DI */
843 dataval = ((datalong & 0x8000)>>13) ? EE_DATA_WRITE : 0;
845 OUTW(dev, EE_ENB | dataval, SCBeeprom);
847 OUTW(dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
849 OUTW(dev, EE_ENB | dataval, SCBeeprom);
852 datalong = datalong << 1; /* Adjust significant data bit*/
855 /* Finish up command (toggle CS) */
856 OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
857 udelay(1); /* delay for more than 250 ns */
858 OUTW(dev, EE_ENB, SCBeeprom);
860 /* Wait for programming ready (D0 = 1) */
864 dataval = INW(dev, SCBeeprom);
865 if (dataval & EE_DATA_READ)
873 printf ("Write i82559 eeprom timed out (100 ms waiting for data ready.\n");
877 /* Terminate the EEPROM access. */
878 OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
884 static void init_rx_ring (struct eth_device *dev)
888 for (i = 0; i < NUM_RX_DESC; i++) {
889 rx_ring[i].status = 0;
891 (i == NUM_RX_DESC - 1) ? cpu_to_le16 (RFD_CONTROL_S) : 0;
893 cpu_to_le32 (phys_to_bus
894 ((u32) & rx_ring[(i + 1) % NUM_RX_DESC]));
895 rx_ring[i].rx_buf_addr = 0xffffffff;
896 rx_ring[i].count = cpu_to_le32 (PKTSIZE_ALIGN << 16);
902 static void purge_tx_ring (struct eth_device *dev)
907 tx_threshold = 0x01208000;
909 for (i = 0; i < NUM_TX_DESC; i++) {
910 tx_ring[i].status = 0;
911 tx_ring[i].command = 0;
913 tx_ring[i].tx_desc_addr = 0;
914 tx_ring[i].count = 0;
916 tx_ring[i].tx_buf_addr0 = 0;
917 tx_ring[i].tx_buf_size0 = 0;
918 tx_ring[i].tx_buf_addr1 = 0;
919 tx_ring[i].tx_buf_size1 = 0;
923 static void read_hw_addr (struct eth_device *dev, bd_t * bis)
927 int addr_len = read_eeprom (dev, 0, 6) == 0xffff ? 8 : 6;
929 for (j = 0, i = 0; i < 0x40; i++) {
930 u16 value = read_eeprom (dev, i, addr_len);
934 dev->enetaddr[j++] = value;
935 dev->enetaddr[j++] = value >> 8;
940 memset (dev->enetaddr, 0, ETH_ALEN);
942 printf ("%s: Invalid EEPROM checksum %#4.4x, "
943 "check settings before activating this device!\n",