diff options
Diffstat (limited to 'drivers/net/ne2000.c')
| -rw-r--r-- | drivers/net/ne2000.c | 719 |
1 files changed, 7 insertions, 712 deletions
diff --git a/drivers/net/ne2000.c b/drivers/net/ne2000.c index ec92485..ab5eec7 100644 --- a/drivers/net/ne2000.c +++ b/drivers/net/ne2000.c @@ -74,600 +74,11 @@ Add SNMP #include <common.h> #include <command.h> -#include <net.h> -#include <malloc.h> - -#define mdelay(n) udelay((n)*1000) -/* forward definition of function used for the uboot interface */ -void uboot_push_packet_len(int len); -void uboot_push_tx_done(int key, int val); - -/* - * Debugging details - * - * Set to perms of: - * 0 disables all debug output - * 1 for process debug output - * 2 for added data IO output: get_reg, put_reg - * 4 for packet allocation/free output - * 8 for only startup status, so we can tell we're installed OK - */ -#if 0 -#define DEBUG 0xf -#else -#define DEBUG 0 -#endif - -#if DEBUG & 1 -#define DEBUG_FUNCTION() do { printf("%s\n", __FUNCTION__); } while (0) -#define DEBUG_LINE() do { printf("%d\n", __LINE__); } while (0) -#define PRINTK(args...) printf(args) -#else -#define DEBUG_FUNCTION() do {} while(0) -#define DEBUG_LINE() do {} while(0) -#define PRINTK(args...) -#endif /* NE2000 base header file */ #include "ne2000_base.h" -#if defined(CONFIG_DRIVER_AX88796L) -/* AX88796L support */ -#include "ax88796.h" -#else -/* Basic NE2000 chip support */ -#include "ne2000.h" -#endif - -static dp83902a_priv_data_t nic; /* just one instance of the card supported */ - -static bool -dp83902a_init(void) -{ - dp83902a_priv_data_t *dp = &nic; - u8* base; -#if defined(NE2000_BASIC_INIT) - int i; -#endif - - DEBUG_FUNCTION(); - - base = dp->base; - if (!base) - return false; /* No device found */ - - DEBUG_LINE(); - -#if defined(NE2000_BASIC_INIT) - /* AX88796L doesn't need */ - /* Prepare ESA */ - DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE1); /* Select page 1 */ - /* Use the address from the serial EEPROM */ - for (i = 0; i < 6; i++) - DP_IN(base, DP_P1_PAR0+i, dp->esa[i]); - DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE0); /* Select page 0 */ - - printf("NE2000 - %s ESA: %02x:%02x:%02x:%02x:%02x:%02x\n", - "eeprom", - dp->esa[0], - dp->esa[1], - dp->esa[2], - dp->esa[3], - dp->esa[4], - dp->esa[5] ); - -#endif /* NE2000_BASIC_INIT */ - return true; -} - -static void -dp83902a_stop(void) -{ - dp83902a_priv_data_t *dp = &nic; - u8 *base = dp->base; - - DEBUG_FUNCTION(); - - DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_STOP); /* Brutal */ - DP_OUT(base, DP_ISR, 0xFF); /* Clear any pending interrupts */ - DP_OUT(base, DP_IMR, 0x00); /* Disable all interrupts */ - - dp->running = false; -} - -/* - * This function is called to "start up" the interface. It may be called - * multiple times, even when the hardware is already running. It will be - * called whenever something "hardware oriented" changes and should leave - * the hardware ready to send/receive packets. - */ -static void -dp83902a_start(u8 * enaddr) -{ - dp83902a_priv_data_t *dp = &nic; - u8 *base = dp->base; - int i; - - DEBUG_FUNCTION(); - - DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_STOP); /* Brutal */ - DP_OUT(base, DP_DCR, DP_DCR_INIT); - DP_OUT(base, DP_RBCH, 0); /* Remote byte count */ - DP_OUT(base, DP_RBCL, 0); - DP_OUT(base, DP_RCR, DP_RCR_MON); /* Accept no packets */ - DP_OUT(base, DP_TCR, DP_TCR_LOCAL); /* Transmitter [virtually] off */ - DP_OUT(base, DP_TPSR, dp->tx_buf1); /* Transmitter start page */ - dp->tx1 = dp->tx2 = 0; - dp->tx_next = dp->tx_buf1; - dp->tx_started = false; - dp->running = true; - DP_OUT(base, DP_PSTART, dp->rx_buf_start); /* Receive ring start page */ - DP_OUT(base, DP_BNDRY, dp->rx_buf_end - 1); /* Receive ring boundary */ - DP_OUT(base, DP_PSTOP, dp->rx_buf_end); /* Receive ring end page */ - dp->rx_next = dp->rx_buf_start - 1; - dp->running = true; - DP_OUT(base, DP_ISR, 0xFF); /* Clear any pending interrupts */ - DP_OUT(base, DP_IMR, DP_IMR_All); /* Enable all interrupts */ - DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE1 | DP_CR_STOP); /* Select page 1 */ - DP_OUT(base, DP_P1_CURP, dp->rx_buf_start); /* Current page - next free page for Rx */ - dp->running = true; - for (i = 0; i < ETHER_ADDR_LEN; i++) { - /* FIXME */ - /*((vu_short*)( base + ((DP_P1_PAR0 + i) * 2) + - * 0x1400)) = enaddr[i];*/ - DP_OUT(base, DP_P1_PAR0+i, enaddr[i]); - } - /* Enable and start device */ - DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); - DP_OUT(base, DP_TCR, DP_TCR_NORMAL); /* Normal transmit operations */ - DP_OUT(base, DP_RCR, DP_RCR_AB); /* Accept broadcast, no errors, no multicast */ - dp->running = true; -} - -/* - * This routine is called to start the transmitter. It is split out from the - * data handling routine so it may be called either when data becomes first - * available or when an Tx interrupt occurs - */ - -static void -dp83902a_start_xmit(int start_page, int len) -{ - dp83902a_priv_data_t *dp = (dp83902a_priv_data_t *) &nic; - u8 *base = dp->base; - - DEBUG_FUNCTION(); - -#if DEBUG & 1 - printf("Tx pkt %d len %d\n", start_page, len); - if (dp->tx_started) - printf("TX already started?!?\n"); -#endif - - DP_OUT(base, DP_ISR, (DP_ISR_TxP | DP_ISR_TxE)); - DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); - DP_OUT(base, DP_TBCL, len & 0xFF); - DP_OUT(base, DP_TBCH, len >> 8); - DP_OUT(base, DP_TPSR, start_page); - DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_TXPKT | DP_CR_START); - - dp->tx_started = true; -} - -/* - * This routine is called to send data to the hardware. It is known a-priori - * that there is free buffer space (dp->tx_next). - */ -static void -dp83902a_send(u8 *data, int total_len, u32 key) -{ - struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; - u8 *base = dp->base; - int len, start_page, pkt_len, i, isr; -#if DEBUG & 4 - int dx; -#endif - - DEBUG_FUNCTION(); - - len = pkt_len = total_len; - if (pkt_len < IEEE_8023_MIN_FRAME) - pkt_len = IEEE_8023_MIN_FRAME; - - start_page = dp->tx_next; - if (dp->tx_next == dp->tx_buf1) { - dp->tx1 = start_page; - dp->tx1_len = pkt_len; - dp->tx1_key = key; - dp->tx_next = dp->tx_buf2; - } else { - dp->tx2 = start_page; - dp->tx2_len = pkt_len; - dp->tx2_key = key; - dp->tx_next = dp->tx_buf1; - } - -#if DEBUG & 5 - printf("TX prep page %d len %d\n", start_page, pkt_len); -#endif - - DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */ - { - /* - * Dummy read. The manual sez something slightly different, - * but the code is extended a bit to do what Hitachi's monitor - * does (i.e., also read data). - */ - - u16 tmp; - int len = 1; - - DP_OUT(base, DP_RSAL, 0x100 - len); - DP_OUT(base, DP_RSAH, (start_page - 1) & 0xff); - DP_OUT(base, DP_RBCL, len); - DP_OUT(base, DP_RBCH, 0); - DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_RDMA | DP_CR_START); - DP_IN_DATA(dp->data, tmp); - } - -#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_TX_DMA - /* - * Stall for a bit before continuing to work around random data - * corruption problems on some platforms. - */ - CYGACC_CALL_IF_DELAY_US(1); -#endif - - /* Send data to device buffer(s) */ - DP_OUT(base, DP_RSAL, 0); - DP_OUT(base, DP_RSAH, start_page); - DP_OUT(base, DP_RBCL, pkt_len & 0xFF); - DP_OUT(base, DP_RBCH, pkt_len >> 8); - DP_OUT(base, DP_CR, DP_CR_WDMA | DP_CR_START); - - /* Put data into buffer */ -#if DEBUG & 4 - printf(" sg buf %08lx len %08x\n ", (u32)data, len); - dx = 0; -#endif - while (len > 0) { -#if DEBUG & 4 - printf(" %02x", *data); - if (0 == (++dx % 16)) printf("\n "); -#endif - - DP_OUT_DATA(dp->data, *data++); - len--; - } -#if DEBUG & 4 - printf("\n"); -#endif - if (total_len < pkt_len) { -#if DEBUG & 4 - printf(" + %d bytes of padding\n", pkt_len - total_len); -#endif - /* Padding to 802.3 length was required */ - for (i = total_len; i < pkt_len;) { - i++; - DP_OUT_DATA(dp->data, 0); - } - } - -#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_TX_DMA - /* - * After last data write, delay for a bit before accessing the - * device again, or we may get random data corruption in the last - * datum (on some platforms). - */ - CYGACC_CALL_IF_DELAY_US(1); -#endif - - /* Wait for DMA to complete */ - do { - DP_IN(base, DP_ISR, isr); - } while ((isr & DP_ISR_RDC) == 0); - - /* Then disable DMA */ - DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); - - /* Start transmit if not already going */ - if (!dp->tx_started) { - if (start_page == dp->tx1) { - dp->tx_int = 1; /* Expecting interrupt from BUF1 */ - } else { - dp->tx_int = 2; /* Expecting interrupt from BUF2 */ - } - dp83902a_start_xmit(start_page, pkt_len); - } -} - -/* - * This function is called when a packet has been received. It's job is - * to prepare to unload the packet from the hardware. Once the length of - * the packet is known, the upper layer of the driver can be told. When - * the upper layer is ready to unload the packet, the internal function - * 'dp83902a_recv' will be called to actually fetch it from the hardware. - */ -static void -dp83902a_RxEvent(void) -{ - struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; - u8 *base = dp->base; - u8 rsr; - u8 rcv_hdr[4]; - int i, len, pkt, cur; - - DEBUG_FUNCTION(); - - DP_IN(base, DP_RSR, rsr); - while (true) { - /* Read incoming packet header */ - DP_OUT(base, DP_CR, DP_CR_PAGE1 | DP_CR_NODMA | DP_CR_START); - DP_IN(base, DP_P1_CURP, cur); - DP_OUT(base, DP_P1_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); - DP_IN(base, DP_BNDRY, pkt); - - pkt += 1; - if (pkt == dp->rx_buf_end) - pkt = dp->rx_buf_start; - - if (pkt == cur) { - break; - } - DP_OUT(base, DP_RBCL, sizeof(rcv_hdr)); - DP_OUT(base, DP_RBCH, 0); - DP_OUT(base, DP_RSAL, 0); - DP_OUT(base, DP_RSAH, pkt); - if (dp->rx_next == pkt) { - if (cur == dp->rx_buf_start) - DP_OUT(base, DP_BNDRY, dp->rx_buf_end - 1); - else - DP_OUT(base, DP_BNDRY, cur - 1); /* Update pointer */ - return; - } - dp->rx_next = pkt; - DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */ - DP_OUT(base, DP_CR, DP_CR_RDMA | DP_CR_START); -#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_RX_DMA - CYGACC_CALL_IF_DELAY_US(10); -#endif - - /* read header (get data size)*/ - for (i = 0; i < sizeof(rcv_hdr);) { - DP_IN_DATA(dp->data, rcv_hdr[i++]); - } - -#if DEBUG & 5 - printf("rx hdr %02x %02x %02x %02x\n", - rcv_hdr[0], rcv_hdr[1], rcv_hdr[2], rcv_hdr[3]); -#endif - len = ((rcv_hdr[3] << 8) | rcv_hdr[2]) - sizeof(rcv_hdr); - - /* data read */ - uboot_push_packet_len(len); - - if (rcv_hdr[1] == dp->rx_buf_start) - DP_OUT(base, DP_BNDRY, dp->rx_buf_end - 1); - else - DP_OUT(base, DP_BNDRY, rcv_hdr[1] - 1); /* Update pointer */ - } -} - -/* - * This function is called as a result of the "eth_drv_recv()" call above. - * It's job is to actually fetch data for a packet from the hardware once - * memory buffers have been allocated for the packet. Note that the buffers - * may come in pieces, using a scatter-gather list. This allows for more - * efficient processing in the upper layers of the stack. - */ -static void -dp83902a_recv(u8 *data, int len) -{ - struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; - u8 *base = dp->base; - int i, mlen; - u8 saved_char = 0; - bool saved; -#if DEBUG & 4 - int dx; -#endif - - DEBUG_FUNCTION(); - -#if DEBUG & 5 - printf("Rx packet %d length %d\n", dp->rx_next, len); -#endif - - /* Read incoming packet data */ - DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); - DP_OUT(base, DP_RBCL, len & 0xFF); - DP_OUT(base, DP_RBCH, len >> 8); - DP_OUT(base, DP_RSAL, 4); /* Past header */ - DP_OUT(base, DP_RSAH, dp->rx_next); - DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */ - DP_OUT(base, DP_CR, DP_CR_RDMA | DP_CR_START); -#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_RX_DMA - CYGACC_CALL_IF_DELAY_US(10); -#endif - - saved = false; - for (i = 0; i < 1; i++) { - if (data) { - mlen = len; -#if DEBUG & 4 - printf(" sg buf %08lx len %08x \n", (u32) data, mlen); - dx = 0; -#endif - while (0 < mlen) { - /* Saved byte from previous loop? */ - if (saved) { - *data++ = saved_char; - mlen--; - saved = false; - continue; - } - - { - u8 tmp; - DP_IN_DATA(dp->data, tmp); -#if DEBUG & 4 - printf(" %02x", tmp); - if (0 == (++dx % 16)) printf("\n "); -#endif - *data++ = tmp;; - mlen--; - } - } -#if DEBUG & 4 - printf("\n"); -#endif - } - } -} - -static void -dp83902a_TxEvent(void) -{ - struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; - u8 *base = dp->base; - u8 tsr; - u32 key; - - DEBUG_FUNCTION(); - - DP_IN(base, DP_TSR, tsr); - if (dp->tx_int == 1) { - key = dp->tx1_key; - dp->tx1 = 0; - } else { - key = dp->tx2_key; - dp->tx2 = 0; - } - /* Start next packet if one is ready */ - dp->tx_started = false; - if (dp->tx1) { - dp83902a_start_xmit(dp->tx1, dp->tx1_len); - dp->tx_int = 1; - } else if (dp->tx2) { - dp83902a_start_xmit(dp->tx2, dp->tx2_len); - dp->tx_int = 2; - } else { - dp->tx_int = 0; - } - /* Tell higher level we sent this packet */ - uboot_push_tx_done(key, 0); -} - -/* - * Read the tally counters to clear them. Called in response to a CNT - * interrupt. - */ -static void -dp83902a_ClearCounters(void) -{ - struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; - u8 *base = dp->base; - u8 cnt1, cnt2, cnt3; - - DP_IN(base, DP_FER, cnt1); - DP_IN(base, DP_CER, cnt2); - DP_IN(base, DP_MISSED, cnt3); - DP_OUT(base, DP_ISR, DP_ISR_CNT); -} - -/* - * Deal with an overflow condition. This code follows the procedure set - * out in section 7.0 of the datasheet. - */ -static void -dp83902a_Overflow(void) -{ - struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *)&nic; - u8 *base = dp->base; - u8 isr; - - /* Issue a stop command and wait 1.6ms for it to complete. */ - DP_OUT(base, DP_CR, DP_CR_STOP | DP_CR_NODMA); - CYGACC_CALL_IF_DELAY_US(1600); - - /* Clear the remote byte counter registers. */ - DP_OUT(base, DP_RBCL, 0); - DP_OUT(base, DP_RBCH, 0); - - /* Enter loopback mode while we clear the buffer. */ - DP_OUT(base, DP_TCR, DP_TCR_LOCAL); - DP_OUT(base, DP_CR, DP_CR_START | DP_CR_NODMA); - - /* - * Read in as many packets as we can and acknowledge any and receive - * interrupts. Since the buffer has overflowed, a receive event of - * some kind will have occured. - */ - dp83902a_RxEvent(); - DP_OUT(base, DP_ISR, DP_ISR_RxP|DP_ISR_RxE); - - /* Clear the overflow condition and leave loopback mode. */ - DP_OUT(base, DP_ISR, DP_ISR_OFLW); - DP_OUT(base, DP_TCR, DP_TCR_NORMAL); - - /* - * If a transmit command was issued, but no transmit event has occured, - * restart it here. - */ - DP_IN(base, DP_ISR, isr); - if (dp->tx_started && !(isr & (DP_ISR_TxP|DP_ISR_TxE))) { - DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_TXPKT | DP_CR_START); - } -} - -static void -dp83902a_poll(void) -{ - struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; - u8 *base = dp->base; - u8 isr; - - DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE0 | DP_CR_START); - DP_IN(base, DP_ISR, isr); - while (0 != isr) { - /* - * The CNT interrupt triggers when the MSB of one of the error - * counters is set. We don't much care about these counters, but - * we should read their values to reset them. - */ - if (isr & DP_ISR_CNT) { - dp83902a_ClearCounters(); - } - /* - * Check for overflow. It's a special case, since there's a - * particular procedure that must be followed to get back into - * a running state.a - */ - if (isr & DP_ISR_OFLW) { - dp83902a_Overflow(); - } else { - /* - * Other kinds of interrupts can be acknowledged simply by - * clearing the relevant bits of the ISR. Do that now, then - * handle the interrupts we care about. - */ - DP_OUT(base, DP_ISR, isr); /* Clear set bits */ - if (!dp->running) break; /* Is this necessary? */ - /* - * Check for tx_started on TX event since these may happen - * spuriously it seems. - */ - if (isr & (DP_ISR_TxP|DP_ISR_TxE) && dp->tx_started) { - dp83902a_TxEvent(); - } - if (isr & (DP_ISR_RxP|DP_ISR_RxE)) { - dp83902a_RxEvent(); - } - } - DP_IN(base, DP_ISR, isr); - } -} - +#define mdelay(n) udelay((n)*1000) /* find prom (taken from pc_net_cs.c from Linux) */ #include "8390.h" @@ -763,18 +174,16 @@ static hw_info_t hw_info[] = { #define PCNET_RESET 0x1f /* Issue a read to reset, a write to clear. */ #define PCNET_MISC 0x18 /* For IBM CCAE and Socket EA cards */ -static void pcnet_reset_8390(void) +static void pcnet_reset_8390(u8* addr) { int i, r; - PRINTK("nic base is %lx\n", nic.base); - n2k_outb(E8390_NODMA + E8390_PAGE0+E8390_STOP, E8390_CMD); - PRINTK("cmd (at %lx) is %x\n", nic.base + E8390_CMD, n2k_inb(E8390_CMD)); + PRINTK("cmd (at %lx) is %x\n", addr + E8390_CMD, n2k_inb(E8390_CMD)); n2k_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, E8390_CMD); - PRINTK("cmd (at %lx) is %x\n", nic.base + E8390_CMD, n2k_inb(E8390_CMD)); + PRINTK("cmd (at %lx) is %x\n", addr + E8390_CMD, n2k_inb(E8390_CMD)); n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD); - PRINTK("cmd (at %lx) is %x\n", nic.base + E8390_CMD, n2k_inb(E8390_CMD)); + PRINTK("cmd (at %lx) is %x\n", addr + E8390_CMD, n2k_inb(E8390_CMD)); n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD); n2k_outb(n2k_inb(PCNET_RESET), PCNET_RESET); @@ -791,8 +200,7 @@ static void pcnet_reset_8390(void) printf("pcnet_reset_8390() did not complete.\n"); } /* pcnet_reset_8390 */ -int get_prom(u8* mac_addr) __attribute__ ((weak, alias ("__get_prom"))); -int __get_prom(u8* mac_addr) +int get_prom(u8* mac_addr, u8* base_addr) { u8 prom[32]; int i, j; @@ -816,7 +224,7 @@ int __get_prom(u8* mac_addr) PRINTK ("trying to get MAC via prom reading\n"); - pcnet_reset_8390 (); + pcnet_reset_8390 (base_addr); mdelay (10); @@ -849,116 +257,3 @@ int __get_prom(u8* mac_addr) } return 0; } - -/* U-boot specific routines */ -static u8 *pbuf = NULL; - -static int pkey = -1; -static int initialized = 0; - -void uboot_push_packet_len(int len) { - PRINTK("pushed len = %d\n", len); - if (len >= 2000) { - printf("NE2000: packet too big\n"); - return; - } - dp83902a_recv(&pbuf[0], len); - - /*Just pass it to the upper layer*/ - NetReceive(&pbuf[0], len); -} - -void uboot_push_tx_done(int key, int val) { - PRINTK("pushed key = %d\n", key); - pkey = key; -} - -int eth_init(bd_t *bd) { - int r; - u8 dev_addr[6]; - char ethaddr[20]; - - PRINTK("### eth_init\n"); - - if (!pbuf) { - pbuf = malloc(2000); - if (!pbuf) { - printf("Cannot allocate rx buffer\n"); - return -1; - } - } - -#ifdef CONFIG_DRIVER_NE2000_CCR - { - vu_char *p = (vu_char *) CONFIG_DRIVER_NE2000_CCR; - - PRINTK("CCR before is %x\n", *p); - *p = CONFIG_DRIVER_NE2000_VAL; - PRINTK("CCR after is %x\n", *p); - } -#endif - - nic.base = (u8 *) CONFIG_DRIVER_NE2000_BASE; - - r = get_prom(dev_addr); - if (!r) - return -1; - - sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X", - dev_addr[0], dev_addr[1], - dev_addr[2], dev_addr[3], - dev_addr[4], dev_addr[5]) ; - PRINTK("Set environment from HW MAC addr = \"%s\"\n", ethaddr); - setenv ("ethaddr", ethaddr); - - nic.data = nic.base + DP_DATA; - nic.tx_buf1 = START_PG; - nic.tx_buf2 = START_PG2; - nic.rx_buf_start = RX_START; - nic.rx_buf_end = RX_END; - - if (dp83902a_init() == false) - return -1; - - dp83902a_start(dev_addr); - initialized = 1; - - return 0; -} - -void eth_halt() { - - PRINTK("### eth_halt\n"); - if(initialized) - dp83902a_stop(); - initialized = 0; -} - -int eth_rx() { - dp83902a_poll(); - return 1; -} - -int eth_send(volatile void *packet, int length) { - int tmo; - - PRINTK("### eth_send\n"); - - pkey = -1; - - dp83902a_send((u8 *) packet, length, 666); - tmo = get_timer (0) + TOUT * CFG_HZ; - while(1) { - dp83902a_poll(); - if (pkey != -1) { - PRINTK("Packet sucesfully sent\n"); - return 0; - } - if (get_timer (0) >= tmo) { - printf("transmission error (timoeut)\n"); - return 0; - } - - } - return 0; -} |