diff options
Diffstat (limited to 'drivers/net/dc2114x.c')
| -rw-r--r-- | drivers/net/dc2114x.c | 771 |
1 files changed, 771 insertions, 0 deletions
diff --git a/drivers/net/dc2114x.c b/drivers/net/dc2114x.c new file mode 100644 index 0000000..d5275dc --- /dev/null +++ b/drivers/net/dc2114x.c @@ -0,0 +1,771 @@ +/* + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> + +#if defined(CONFIG_CMD_NET) \ + && defined(CONFIG_NET_MULTI) && defined(CONFIG_TULIP) + +#include <malloc.h> +#include <net.h> +#include <pci.h> + +#undef DEBUG_SROM +#undef DEBUG_SROM2 + +#undef UPDATE_SROM + +/* PCI Registers. + */ +#define PCI_CFDA_PSM 0x43 + +#define CFRV_RN 0x000000f0 /* Revision Number */ + +#define WAKEUP 0x00 /* Power Saving Wakeup */ +#define SLEEP 0x80 /* Power Saving Sleep Mode */ + +#define DC2114x_BRK 0x0020 /* CFRV break between DC21142 & DC21143 */ + +/* Ethernet chip registers. + */ +#define DE4X5_BMR 0x000 /* Bus Mode Register */ +#define DE4X5_TPD 0x008 /* Transmit Poll Demand Reg */ +#define DE4X5_RRBA 0x018 /* RX Ring Base Address Reg */ +#define DE4X5_TRBA 0x020 /* TX Ring Base Address Reg */ +#define DE4X5_STS 0x028 /* Status Register */ +#define DE4X5_OMR 0x030 /* Operation Mode Register */ +#define DE4X5_SICR 0x068 /* SIA Connectivity Register */ +#define DE4X5_APROM 0x048 /* Ethernet Address PROM */ + +/* Register bits. + */ +#define BMR_SWR 0x00000001 /* Software Reset */ +#define STS_TS 0x00700000 /* Transmit Process State */ +#define STS_RS 0x000e0000 /* Receive Process State */ +#define OMR_ST 0x00002000 /* Start/Stop Transmission Command */ +#define OMR_SR 0x00000002 /* Start/Stop Receive */ +#define OMR_PS 0x00040000 /* Port Select */ +#define OMR_SDP 0x02000000 /* SD Polarity - MUST BE ASSERTED */ +#define OMR_PM 0x00000080 /* Pass All Multicast */ + +/* Descriptor bits. + */ +#define R_OWN 0x80000000 /* Own Bit */ +#define RD_RER 0x02000000 /* Receive End Of Ring */ +#define RD_LS 0x00000100 /* Last Descriptor */ +#define RD_ES 0x00008000 /* Error Summary */ +#define TD_TER 0x02000000 /* Transmit End Of Ring */ +#define T_OWN 0x80000000 /* Own Bit */ +#define TD_LS 0x40000000 /* Last Segment */ +#define TD_FS 0x20000000 /* First Segment */ +#define TD_ES 0x00008000 /* Error Summary */ +#define TD_SET 0x08000000 /* Setup Packet */ + +/* The EEPROM commands include the alway-set leading bit. */ +#define SROM_WRITE_CMD 5 +#define SROM_READ_CMD 6 +#define SROM_ERASE_CMD 7 + +#define SROM_HWADD 0x0014 /* Hardware Address offset in SROM */ +#define SROM_RD 0x00004000 /* Read from Boot ROM */ +#define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */ +#define EE_WRITE_0 0x4801 +#define EE_WRITE_1 0x4805 +#define EE_DATA_READ 0x08 /* EEPROM chip data out. */ +#define SROM_SR 0x00000800 /* Select Serial ROM when set */ + +#define DT_IN 0x00000004 /* Serial Data In */ +#define DT_CLK 0x00000002 /* Serial ROM Clock */ +#define DT_CS 0x00000001 /* Serial ROM Chip Select */ + +#define POLL_DEMAND 1 + +#ifdef CONFIG_TULIP_FIX_DAVICOM +#define RESET_DM9102(dev) {\ + unsigned long i;\ + i=INL(dev, 0x0);\ + udelay(1000);\ + OUTL(dev, i | BMR_SWR, DE4X5_BMR);\ + udelay(1000);\ +} +#else +#define RESET_DE4X5(dev) {\ + int i;\ + i=INL(dev, DE4X5_BMR);\ + udelay(1000);\ + OUTL(dev, i | BMR_SWR, DE4X5_BMR);\ + udelay(1000);\ + OUTL(dev, i, DE4X5_BMR);\ + udelay(1000);\ + for (i=0;i<5;i++) {INL(dev, DE4X5_BMR); udelay(10000);}\ + udelay(1000);\ +} +#endif + +#define START_DE4X5(dev) {\ + s32 omr; \ + omr = INL(dev, DE4X5_OMR);\ + omr |= OMR_ST | OMR_SR;\ + OUTL(dev, omr, DE4X5_OMR); /* Enable the TX and/or RX */\ +} + +#define STOP_DE4X5(dev) {\ + s32 omr; \ + omr = INL(dev, DE4X5_OMR);\ + omr &= ~(OMR_ST|OMR_SR);\ + OUTL(dev, omr, DE4X5_OMR); /* Disable the TX and/or RX */ \ +} + +#define NUM_RX_DESC PKTBUFSRX +#ifndef CONFIG_TULIP_FIX_DAVICOM + #define NUM_TX_DESC 1 /* Number of TX descriptors */ +#else + #define NUM_TX_DESC 4 +#endif +#define RX_BUFF_SZ PKTSIZE_ALIGN + +#define TOUT_LOOP 1000000 + +#define SETUP_FRAME_LEN 192 +#define ETH_ALEN 6 + +struct de4x5_desc { + volatile s32 status; + u32 des1; + u32 buf; + u32 next; +}; + +static struct de4x5_desc rx_ring[NUM_RX_DESC] __attribute__ ((aligned(32))); /* RX descriptor ring */ +static struct de4x5_desc tx_ring[NUM_TX_DESC] __attribute__ ((aligned(32))); /* TX descriptor ring */ +static int rx_new; /* RX descriptor ring pointer */ +static int tx_new; /* TX descriptor ring pointer */ + +static char rxRingSize; +static char txRingSize; + +#if defined(UPDATE_SROM) || !defined(CONFIG_TULIP_FIX_DAVICOM) +static void sendto_srom(struct eth_device* dev, u_int command, u_long addr); +static int getfrom_srom(struct eth_device* dev, u_long addr); +static int do_eeprom_cmd(struct eth_device *dev, u_long ioaddr,int cmd,int cmd_len); +static int do_read_eeprom(struct eth_device *dev,u_long ioaddr,int location,int addr_len); +#endif /* UPDATE_SROM || !CONFIG_TULIP_FIX_DAVICOM */ +#ifdef UPDATE_SROM +static int write_srom(struct eth_device *dev, u_long ioaddr, int index, int new_value); +static void update_srom(struct eth_device *dev, bd_t *bis); +#endif +#ifndef CONFIG_TULIP_FIX_DAVICOM +static int read_srom(struct eth_device *dev, u_long ioaddr, int index); +static void read_hw_addr(struct eth_device* dev, bd_t * bis); +#endif /* CONFIG_TULIP_FIX_DAVICOM */ +static void send_setup_frame(struct eth_device* dev, bd_t * bis); + +static int dc21x4x_init(struct eth_device* dev, bd_t* bis); +static int dc21x4x_send(struct eth_device* dev, volatile void *packet, int length); +static int dc21x4x_recv(struct eth_device* dev); +static void dc21x4x_halt(struct eth_device* dev); +#ifdef CONFIG_TULIP_SELECT_MEDIA +extern void dc21x4x_select_media(struct eth_device* dev); +#endif + +#if defined(CONFIG_E500) +#define phys_to_bus(a) (a) +#else +#define phys_to_bus(a) pci_phys_to_mem((pci_dev_t)dev->priv, a) +#endif + +static int INL(struct eth_device* dev, u_long addr) +{ + return le32_to_cpu(*(volatile u_long *)(addr + dev->iobase)); +} + +static void OUTL(struct eth_device* dev, int command, u_long addr) +{ + *(volatile u_long *)(addr + dev->iobase) = cpu_to_le32(command); +} + +static struct pci_device_id supported[] = { + { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST }, + { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21142 }, +#ifdef CONFIG_TULIP_FIX_DAVICOM + { PCI_VENDOR_ID_DAVICOM, PCI_DEVICE_ID_DAVICOM_DM9102A }, +#endif + { } +}; + +int dc21x4x_initialize(bd_t *bis) +{ + int idx=0; + int card_number = 0; + unsigned int cfrv; + unsigned char timer; + pci_dev_t devbusfn; + unsigned int iobase; + unsigned short status; + struct eth_device* dev; + + while(1) { + devbusfn = pci_find_devices(supported, idx++); + if (devbusfn == -1) { + break; + } + + /* Get the chip configuration revision register. */ + pci_read_config_dword(devbusfn, PCI_REVISION_ID, &cfrv); + +#ifndef CONFIG_TULIP_FIX_DAVICOM + if ((cfrv & CFRV_RN) < DC2114x_BRK ) { + printf("Error: The chip is not DC21143.\n"); + continue; + } +#endif + + pci_read_config_word(devbusfn, PCI_COMMAND, &status); + status |= +#ifdef CONFIG_TULIP_USE_IO + PCI_COMMAND_IO | +#else + PCI_COMMAND_MEMORY | +#endif + PCI_COMMAND_MASTER; + pci_write_config_word(devbusfn, PCI_COMMAND, status); + + pci_read_config_word(devbusfn, PCI_COMMAND, &status); + if (!(status & PCI_COMMAND_IO)) { + printf("Error: Can not enable I/O access.\n"); + continue; + } + + if (!(status & PCI_COMMAND_IO)) { + printf("Error: Can not enable I/O access.\n"); + continue; + } + + if (!(status & PCI_COMMAND_MASTER)) { + printf("Error: Can not enable Bus Mastering.\n"); + continue; + } + + /* Check the latency timer for values >= 0x60. */ + pci_read_config_byte(devbusfn, PCI_LATENCY_TIMER, &timer); + + if (timer < 0x60) { + pci_write_config_byte(devbusfn, PCI_LATENCY_TIMER, 0x60); + } + +#ifdef CONFIG_TULIP_USE_IO + /* read BAR for memory space access */ + pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_0, &iobase); + iobase &= PCI_BASE_ADDRESS_IO_MASK; +#else + /* read BAR for memory space access */ + pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_1, &iobase); + iobase &= PCI_BASE_ADDRESS_MEM_MASK; +#endif + debug ("dc21x4x: DEC 21142 PCI Device @0x%x\n", iobase); + + dev = (struct eth_device*) malloc(sizeof *dev); + +#ifdef CONFIG_TULIP_FIX_DAVICOM + sprintf(dev->name, "Davicom#%d", card_number); +#else + sprintf(dev->name, "dc21x4x#%d", card_number); +#endif + +#ifdef CONFIG_TULIP_USE_IO + dev->iobase = pci_io_to_phys(devbusfn, iobase); +#else + dev->iobase = pci_mem_to_phys(devbusfn, iobase); +#endif + dev->priv = (void*) devbusfn; + dev->init = dc21x4x_init; + dev->halt = dc21x4x_halt; + dev->send = dc21x4x_send; + dev->recv = dc21x4x_recv; + + /* Ensure we're not sleeping. */ + pci_write_config_byte(devbusfn, PCI_CFDA_PSM, WAKEUP); + + udelay(10 * 1000); + +#ifndef CONFIG_TULIP_FIX_DAVICOM + read_hw_addr(dev, bis); +#endif + eth_register(dev); + + card_number++; + } + + return card_number; +} + +static int dc21x4x_init(struct eth_device* dev, bd_t* bis) +{ + int i; + int devbusfn = (int) dev->priv; + + /* Ensure we're not sleeping. */ + pci_write_config_byte(devbusfn, PCI_CFDA_PSM, WAKEUP); + +#ifdef CONFIG_TULIP_FIX_DAVICOM + RESET_DM9102(dev); +#else + RESET_DE4X5(dev); +#endif + + if ((INL(dev, DE4X5_STS) & (STS_TS | STS_RS)) != 0) { + printf("Error: Cannot reset ethernet controller.\n"); + return 0; + } + +#ifdef CONFIG_TULIP_SELECT_MEDIA + dc21x4x_select_media(dev); +#else + OUTL(dev, OMR_SDP | OMR_PS | OMR_PM, DE4X5_OMR); +#endif + + for (i = 0; i < NUM_RX_DESC; i++) { + rx_ring[i].status = cpu_to_le32(R_OWN); + rx_ring[i].des1 = cpu_to_le32(RX_BUFF_SZ); + rx_ring[i].buf = cpu_to_le32(phys_to_bus((u32) NetRxPackets[i])); +#ifdef CONFIG_TULIP_FIX_DAVICOM + rx_ring[i].next = cpu_to_le32(phys_to_bus((u32) &rx_ring[(i+1) % NUM_RX_DESC])); +#else + rx_ring[i].next = 0; +#endif + } + + for (i=0; i < NUM_TX_DESC; i++) { + tx_ring[i].status = 0; + tx_ring[i].des1 = 0; + tx_ring[i].buf = 0; + +#ifdef CONFIG_TULIP_FIX_DAVICOM + tx_ring[i].next = cpu_to_le32(phys_to_bus((u32) &tx_ring[(i+1) % NUM_TX_DESC])); +#else + tx_ring[i].next = 0; +#endif + } + + rxRingSize = NUM_RX_DESC; + txRingSize = NUM_TX_DESC; + + /* Write the end of list marker to the descriptor lists. */ + rx_ring[rxRingSize - 1].des1 |= cpu_to_le32(RD_RER); + tx_ring[txRingSize - 1].des1 |= cpu_to_le32(TD_TER); + + /* Tell the adapter where the TX/RX rings are located. */ + OUTL(dev, phys_to_bus((u32) &rx_ring), DE4X5_RRBA); + OUTL(dev, phys_to_bus((u32) &tx_ring), DE4X5_TRBA); + + START_DE4X5(dev); + + tx_new = 0; + rx_new = 0; + + send_setup_frame(dev, bis); + + return 1; +} + +static int dc21x4x_send(struct eth_device* dev, volatile void *packet, int length) +{ + int status = -1; + int i; + + if (length <= 0) { + printf("%s: bad packet size: %d\n", dev->name, length); + goto Done; + } + + for(i = 0; tx_ring[tx_new].status & cpu_to_le32(T_OWN); i++) { + if (i >= TOUT_LOOP) { + printf("%s: tx error buffer not ready\n", dev->name); + goto Done; + } + } + + tx_ring[tx_new].buf = cpu_to_le32(phys_to_bus((u32) packet)); + tx_ring[tx_new].des1 = cpu_to_le32(TD_TER | TD_LS | TD_FS | length); + tx_ring[tx_new].status = cpu_to_le32(T_OWN); + + OUTL(dev, POLL_DEMAND, DE4X5_TPD); + + for(i = 0; tx_ring[tx_new].status & cpu_to_le32(T_OWN); i++) { + if (i >= TOUT_LOOP) { + printf(".%s: tx buffer not ready\n", dev->name); + goto Done; + } + } + + if (le32_to_cpu(tx_ring[tx_new].status) & TD_ES) { +#if 0 /* test-only */ + printf("TX error status = 0x%08X\n", + le32_to_cpu(tx_ring[tx_new].status)); +#endif + tx_ring[tx_new].status = 0x0; + goto Done; + } + + status = length; + + Done: + tx_new = (tx_new+1) % NUM_TX_DESC; + return status; +} + +static int dc21x4x_recv(struct eth_device* dev) +{ + s32 status; + int length = 0; + + for ( ; ; ) { + status = (s32)le32_to_cpu(rx_ring[rx_new].status); + + if (status & R_OWN) { + break; + } + + if (status & RD_LS) { + /* Valid frame status. + */ + if (status & RD_ES) { + + /* There was an error. + */ + printf("RX error status = 0x%08X\n", status); + } else { + /* A valid frame received. + */ + length = (le32_to_cpu(rx_ring[rx_new].status) >> 16); + + /* Pass the packet up to the protocol + * layers. + */ + NetReceive(NetRxPackets[rx_new], length - 4); + } + + /* Change buffer ownership for this frame, back + * to the adapter. + */ + rx_ring[rx_new].status = cpu_to_le32(R_OWN); + } + + /* Update entry information. + */ + rx_new = (rx_new + 1) % rxRingSize; + } + + return length; +} + +static void dc21x4x_halt(struct eth_device* dev) +{ + int devbusfn = (int) dev->priv; + + STOP_DE4X5(dev); + OUTL(dev, 0, DE4X5_SICR); + + pci_write_config_byte(devbusfn, PCI_CFDA_PSM, SLEEP); +} + +static void send_setup_frame(struct eth_device* dev, bd_t *bis) +{ + int i; + char setup_frame[SETUP_FRAME_LEN]; + char *pa = &setup_frame[0]; + + memset(pa, 0xff, SETUP_FRAME_LEN); + + for (i = 0; i < ETH_ALEN; i++) { + *(pa + (i & 1)) = dev->enetaddr[i]; + if (i & 0x01) { + pa += 4; + } + } + + for(i = 0; tx_ring[tx_new].status & cpu_to_le32(T_OWN); i++) { + if (i >= TOUT_LOOP) { + printf("%s: tx error buffer not ready\n", dev->name); + goto Done; + } + } + + tx_ring[tx_new].buf = cpu_to_le32(phys_to_bus((u32) &setup_frame[0])); + tx_ring[tx_new].des1 = cpu_to_le32(TD_TER | TD_SET| SETUP_FRAME_LEN); + tx_ring[tx_new].status = cpu_to_le32(T_OWN); + + OUTL(dev, POLL_DEMAND, DE4X5_TPD); + + for(i = 0; tx_ring[tx_new].status & cpu_to_le32(T_OWN); i++) { + if (i >= TOUT_LOOP) { + printf("%s: tx buffer not ready\n", dev->name); + goto Done; + } + } + + if (le32_to_cpu(tx_ring[tx_new].status) != 0x7FFFFFFF) { + printf("TX error status2 = 0x%08X\n", le32_to_cpu(tx_ring[tx_new].status)); + } + tx_new = (tx_new+1) % NUM_TX_DESC; + +Done: + return; +} + +#if defined(UPDATE_SROM) || !defined(CONFIG_TULIP_FIX_DAVICOM) +/* SROM Read and write routines. + */ +static void +sendto_srom(struct eth_device* dev, u_int command, u_long addr) +{ + OUTL(dev, command, addr); + udelay(1); +} + +static int +getfrom_srom(struct eth_device* dev, u_long addr) +{ + s32 tmp; + + tmp = INL(dev, addr); + udelay(1); + + return tmp; +} + +/* Note: this routine returns extra data bits for size detection. */ +static int do_read_eeprom(struct eth_device *dev, u_long ioaddr, int location, int addr_len) +{ + int i; + unsigned retval = 0; + int read_cmd = location | (SROM_READ_CMD << addr_len); + + sendto_srom(dev, SROM_RD | SROM_SR, ioaddr); + sendto_srom(dev, SROM_RD | SROM_SR | DT_CS, ioaddr); + +#ifdef DEBUG_SROM + printf(" EEPROM read at %d ", location); +#endif + + /* Shift the read command bits out. */ + for (i = 4 + addr_len; i >= 0; i--) { + short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0; + sendto_srom(dev, SROM_RD | SROM_SR | DT_CS | dataval, ioaddr); + udelay(10); + sendto_srom(dev, SROM_RD | SROM_SR | DT_CS | dataval | DT_CLK, ioaddr); + udelay(10); +#ifdef DEBUG_SROM2 + printf("%X", getfrom_srom(dev, ioaddr) & 15); +#endif + retval = (retval << 1) | ((getfrom_srom(dev, ioaddr) & EE_DATA_READ) ? 1 : 0); + } + + sendto_srom(dev, SROM_RD | SROM_SR | DT_CS, ioaddr); + +#ifdef DEBUG_SROM2 + printf(" :%X:", getfrom_srom(dev, ioaddr) & 15); +#endif + + for (i = 16; i > 0; i--) { + sendto_srom(dev, SROM_RD | SROM_SR | DT_CS | DT_CLK, ioaddr); + udelay(10); +#ifdef DEBUG_SROM2 + printf("%X", getfrom_srom(dev, ioaddr) & 15); +#endif + retval = (retval << 1) | ((getfrom_srom(dev, ioaddr) & EE_DATA_READ) ? 1 : 0); + sendto_srom(dev, SROM_RD | SROM_SR | DT_CS, ioaddr); + udelay(10); + } + + /* Terminate the EEPROM access. */ + sendto_srom(dev, SROM_RD | SROM_SR, ioaddr); + +#ifdef DEBUG_SROM2 + printf(" EEPROM value at %d is %5.5x.\n", location, retval); +#endif + + return retval; +} +#endif /* UPDATE_SROM || !CONFIG_TULIP_FIX_DAVICOM */ + +/* This executes a generic EEPROM command, typically a write or write + * enable. It returns the data output from the EEPROM, and thus may + * also be used for reads. + */ +#if defined(UPDATE_SROM) || !defined(CONFIG_TULIP_FIX_DAVICOM) +static int do_eeprom_cmd(struct eth_device *dev, u_long ioaddr, int cmd, int cmd_len) +{ + unsigned retval = 0; + +#ifdef DEBUG_SROM + printf(" EEPROM op 0x%x: ", cmd); +#endif + + sendto_srom(dev,SROM_RD | SROM_SR | DT_CS | DT_CLK, ioaddr); + + /* Shift the command bits out. */ + do { + short dataval = (cmd & (1 << cmd_len)) ? EE_WRITE_1 : EE_WRITE_0; + sendto_srom(dev,dataval, ioaddr); + udelay(10); + +#ifdef DEBUG_SROM2 + printf("%X", getfrom_srom(dev,ioaddr) & 15); +#endif + + sendto_srom(dev,dataval | DT_CLK, ioaddr); + udelay(10); + retval = (retval << 1) | ((getfrom_srom(dev,ioaddr) & EE_DATA_READ) ? 1 : 0); + } while (--cmd_len >= 0); + sendto_srom(dev,SROM_RD | SROM_SR | DT_CS, ioaddr); + + /* Terminate the EEPROM access. */ + sendto_srom(dev,SROM_RD | SROM_SR, ioaddr); + +#ifdef DEBUG_SROM + printf(" EEPROM result is 0x%5.5x.\n", retval); +#endif + + return retval; +} +#endif /* UPDATE_SROM || !CONFIG_TULIP_FIX_DAVICOM */ + +#ifndef CONFIG_TULIP_FIX_DAVICOM +static int read_srom(struct eth_device *dev, u_long ioaddr, int index) +{ + int ee_addr_size = do_read_eeprom(dev, ioaddr, 0xff, 8) & 0x40000 ? 8 : 6; + + return do_eeprom_cmd(dev, ioaddr, + (((SROM_READ_CMD << ee_addr_size) | index) << 16) + | 0xffff, 3 + ee_addr_size + 16); +} +#endif /* CONFIG_TULIP_FIX_DAVICOM */ + +#ifdef UPDATE_SROM +static int write_srom(struct eth_device *dev, u_long ioaddr, int index, int new_value) +{ + int ee_addr_size = do_read_eeprom(dev, ioaddr, 0xff, 8) & 0x40000 ? 8 : 6; + int i; + unsigned short newval; + + udelay(10*1000); /* test-only */ + +#ifdef DEBUG_SROM + printf("ee_addr_size=%d.\n", ee_addr_size); + printf("Writing new entry 0x%4.4x to offset %d.\n", new_value, index); +#endif + + /* Enable programming modes. */ + do_eeprom_cmd(dev, ioaddr, (0x4f << (ee_addr_size-4)), 3+ee_addr_size); + + /* Do the actual write. */ + do_eeprom_cmd(dev, ioaddr, + (((SROM_WRITE_CMD<<ee_addr_size)|index) << 16) | new_value, + 3 + ee_addr_size + 16); + + /* Poll for write finished. */ + sendto_srom(dev, SROM_RD | SROM_SR | DT_CS, ioaddr); + for (i = 0; i < 10000; i++) /* Typical 2000 ticks */ + if (getfrom_srom(dev, ioaddr) & EE_DATA_READ) + break; + +#ifdef DEBUG_SROM + printf(" Write finished after %d ticks.\n", i); +#endif + + /* Disable programming. */ + do_eeprom_cmd(dev, ioaddr, (0x40 << (ee_addr_size-4)), 3 + ee_addr_size); + + /* And read the result. */ + newval = do_eeprom_cmd(dev, ioaddr, + (((SROM_READ_CMD<<ee_addr_size)|index) << 16) + | 0xffff, 3 + ee_addr_size + 16); +#ifdef DEBUG_SROM + printf(" New value at offset %d is %4.4x.\n", index, newval); +#endif + return 1; +} +#endif + +#ifndef CONFIG_TULIP_FIX_DAVICOM +static void read_hw_addr(struct eth_device *dev, bd_t *bis) +{ + u_short tmp, *p = (u_short *)(&dev->enetaddr[0]); + int i, j = 0; + + for (i = 0; i < (ETH_ALEN >> 1); i++) { + tmp = read_srom(dev, DE4X5_APROM, ((SROM_HWADD >> 1) + i)); + *p = le16_to_cpu(tmp); + j += *p++; + } + + if ((j == 0) || (j == 0x2fffd)) { + memset (dev->enetaddr, 0, ETH_ALEN); + debug ("Warning: can't read HW address from SROM.\n"); + goto Done; + } + + return; + +Done: +#ifdef UPDATE_SROM + update_srom(dev, bis); +#endif + return; +} +#endif /* CONFIG_TULIP_FIX_DAVICOM */ + +#ifdef UPDATE_SROM +static void update_srom(struct eth_device *dev, bd_t *bis) +{ + int i; + static unsigned short eeprom[0x40] = { + 0x140b, 0x6610, 0x0000, 0x0000, /* 00 */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 04 */ + 0x00a3, 0x0103, 0x0000, 0x0000, /* 08 */ + 0x0000, 0x1f00, 0x0000, 0x0000, /* 0c */ + 0x0108, 0x038d, 0x0000, 0x0000, /* 10 */ + 0xe078, 0x0001, 0x0040, 0x0018, /* 14 */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 18 */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 1c */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 20 */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 2c */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 30 */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 34 */ + 0x0000, 0x0000, 0x0000, 0x0000, /* 38 */ + 0x0000, 0x0000, 0x0000, 0x4e07, /* 3c */ + }; + + /* Ethernet Addr... */ + eeprom[0x0a] = ((bis->bi_enetaddr[1] & 0xff) << 8) | (bis->bi_enetaddr[0] & 0xff); + eeprom[0x0b] = ((bis->bi_enetaddr[3] & 0xff) << 8) | (bis->bi_enetaddr[2] & 0xff); + eeprom[0x0c] = ((bis->bi_enetaddr[5] & 0xff) << 8) | (bis->bi_enetaddr[4] & 0xff); + + for (i=0; i<0x40; i++) + { + write_srom(dev, DE4X5_APROM, i, eeprom[i]); + } +} +#endif /* UPDATE_SROM */ + +#endif |