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-rw-r--r--cpu/mpc5xxx/fec.c1067
1 files changed, 0 insertions, 1067 deletions
diff --git a/cpu/mpc5xxx/fec.c b/cpu/mpc5xxx/fec.c
deleted file mode 100644
index bf804ee..0000000
--- a/cpu/mpc5xxx/fec.c
+++ /dev/null
@@ -1,1067 +0,0 @@
-/*
- * (C) Copyright 2003-2005
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * This file is based on mpc4200fec.c,
- * (C) Copyright Motorola, Inc., 2000
- */
-
-#include <common.h>
-#include <mpc5xxx.h>
-#include <malloc.h>
-#include <net.h>
-#include <miiphy.h>
-#include "sdma.h"
-#include "fec.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* #define DEBUG 0x28 */
-
-#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI) && \
- defined(CONFIG_MPC5xxx_FEC)
-
-#if !(defined(CONFIG_MII) || defined(CONFIG_CMD_MII))
-#error "CONFIG_MII has to be defined!"
-#endif
-
-#if (DEBUG & 0x60)
-static void tfifo_print(char *devname, mpc5xxx_fec_priv *fec);
-static void rfifo_print(char *devname, mpc5xxx_fec_priv *fec);
-#endif /* DEBUG */
-
-#if (DEBUG & 0x40)
-static uint32 local_crc32(char *string, unsigned int crc_value, int len);
-#endif
-
-typedef struct {
- uint8 data[1500]; /* actual data */
- int length; /* actual length */
- int used; /* buffer in use or not */
- uint8 head[16]; /* MAC header(6 + 6 + 2) + 2(aligned) */
-} NBUF;
-
-int fec5xxx_miiphy_read(char *devname, uint8 phyAddr, uint8 regAddr, uint16 * retVal);
-int fec5xxx_miiphy_write(char *devname, uint8 phyAddr, uint8 regAddr, uint16 data);
-
-/********************************************************************/
-#if (DEBUG & 0x2)
-static void mpc5xxx_fec_phydump (char *devname)
-{
- uint16 phyStatus, i;
- uint8 phyAddr = CONFIG_PHY_ADDR;
- uint8 reg_mask[] = {
-#if CONFIG_PHY_TYPE == 0x79c874 /* AMD Am79C874 */
- /* regs to print: 0...7, 16...19, 21, 23, 24 */
- 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
- 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
-#else
- /* regs to print: 0...8, 16...20 */
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
- 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-#endif
- };
-
- for (i = 0; i < 32; i++) {
- if (reg_mask[i]) {
- miiphy_read(devname, phyAddr, i, &phyStatus);
- printf("Mii reg %d: 0x%04x\n", i, phyStatus);
- }
- }
-}
-#endif
-
-/********************************************************************/
-static int mpc5xxx_fec_rbd_init(mpc5xxx_fec_priv *fec)
-{
- int ix;
- char *data;
- static int once = 0;
-
- for (ix = 0; ix < FEC_RBD_NUM; ix++) {
- if (!once) {
- data = (char *)malloc(FEC_MAX_PKT_SIZE);
- if (data == NULL) {
- printf ("RBD INIT FAILED\n");
- return -1;
- }
- fec->rbdBase[ix].dataPointer = (uint32)data;
- }
- fec->rbdBase[ix].status = FEC_RBD_EMPTY;
- fec->rbdBase[ix].dataLength = 0;
- }
- once ++;
-
- /*
- * have the last RBD to close the ring
- */
- fec->rbdBase[ix - 1].status |= FEC_RBD_WRAP;
- fec->rbdIndex = 0;
-
- return 0;
-}
-
-/********************************************************************/
-static void mpc5xxx_fec_tbd_init(mpc5xxx_fec_priv *fec)
-{
- int ix;
-
- for (ix = 0; ix < FEC_TBD_NUM; ix++) {
- fec->tbdBase[ix].status = 0;
- }
-
- /*
- * Have the last TBD to close the ring
- */
- fec->tbdBase[ix - 1].status |= FEC_TBD_WRAP;
-
- /*
- * Initialize some indices
- */
- fec->tbdIndex = 0;
- fec->usedTbdIndex = 0;
- fec->cleanTbdNum = FEC_TBD_NUM;
-}
-
-/********************************************************************/
-static void mpc5xxx_fec_rbd_clean(mpc5xxx_fec_priv *fec, volatile FEC_RBD * pRbd)
-{
- /*
- * Reset buffer descriptor as empty
- */
- if ((fec->rbdIndex) == (FEC_RBD_NUM - 1))
- pRbd->status = (FEC_RBD_WRAP | FEC_RBD_EMPTY);
- else
- pRbd->status = FEC_RBD_EMPTY;
-
- pRbd->dataLength = 0;
-
- /*
- * Now, we have an empty RxBD, restart the SmartDMA receive task
- */
- SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
-
- /*
- * Increment BD count
- */
- fec->rbdIndex = (fec->rbdIndex + 1) % FEC_RBD_NUM;
-}
-
-/********************************************************************/
-static void mpc5xxx_fec_tbd_scrub(mpc5xxx_fec_priv *fec)
-{
- volatile FEC_TBD *pUsedTbd;
-
-#if (DEBUG & 0x1)
- printf ("tbd_scrub: fec->cleanTbdNum = %d, fec->usedTbdIndex = %d\n",
- fec->cleanTbdNum, fec->usedTbdIndex);
-#endif
-
- /*
- * process all the consumed TBDs
- */
- while (fec->cleanTbdNum < FEC_TBD_NUM) {
- pUsedTbd = &fec->tbdBase[fec->usedTbdIndex];
- if (pUsedTbd->status & FEC_TBD_READY) {
-#if (DEBUG & 0x20)
- printf("Cannot clean TBD %d, in use\n", fec->cleanTbdNum);
-#endif
- return;
- }
-
- /*
- * clean this buffer descriptor
- */
- if (fec->usedTbdIndex == (FEC_TBD_NUM - 1))
- pUsedTbd->status = FEC_TBD_WRAP;
- else
- pUsedTbd->status = 0;
-
- /*
- * update some indeces for a correct handling of the TBD ring
- */
- fec->cleanTbdNum++;
- fec->usedTbdIndex = (fec->usedTbdIndex + 1) % FEC_TBD_NUM;
- }
-}
-
-/********************************************************************/
-static void mpc5xxx_fec_set_hwaddr(mpc5xxx_fec_priv *fec, char *mac)
-{
- uint8 currByte; /* byte for which to compute the CRC */
- int byte; /* loop - counter */
- int bit; /* loop - counter */
- uint32 crc = 0xffffffff; /* initial value */
-
- /*
- * The algorithm used is the following:
- * we loop on each of the six bytes of the provided address,
- * and we compute the CRC by left-shifting the previous
- * value by one position, so that each bit in the current
- * byte of the address may contribute the calculation. If
- * the latter and the MSB in the CRC are different, then
- * the CRC value so computed is also ex-ored with the
- * "polynomium generator". The current byte of the address
- * is also shifted right by one bit at each iteration.
- * This is because the CRC generatore in hardware is implemented
- * as a shift-register with as many ex-ores as the radixes
- * in the polynomium. This suggests that we represent the
- * polynomiumm itself as a 32-bit constant.
- */
- for (byte = 0; byte < 6; byte++) {
- currByte = mac[byte];
- for (bit = 0; bit < 8; bit++) {
- if ((currByte & 0x01) ^ (crc & 0x01)) {
- crc >>= 1;
- crc = crc ^ 0xedb88320;
- } else {
- crc >>= 1;
- }
- currByte >>= 1;
- }
- }
-
- crc = crc >> 26;
-
- /*
- * Set individual hash table register
- */
- if (crc >= 32) {
- fec->eth->iaddr1 = (1 << (crc - 32));
- fec->eth->iaddr2 = 0;
- } else {
- fec->eth->iaddr1 = 0;
- fec->eth->iaddr2 = (1 << crc);
- }
-
- /*
- * Set physical address
- */
- fec->eth->paddr1 = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3];
- fec->eth->paddr2 = (mac[4] << 24) + (mac[5] << 16) + 0x8808;
-}
-
-/********************************************************************/
-static int mpc5xxx_fec_init(struct eth_device *dev, bd_t * bis)
-{
- mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
- struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
-
-#if (DEBUG & 0x1)
- printf ("mpc5xxx_fec_init... Begin\n");
-#endif
-
- /*
- * Initialize RxBD/TxBD rings
- */
- mpc5xxx_fec_rbd_init(fec);
- mpc5xxx_fec_tbd_init(fec);
-
- /*
- * Clear FEC-Lite interrupt event register(IEVENT)
- */
- fec->eth->ievent = 0xffffffff;
-
- /*
- * Set interrupt mask register
- */
- fec->eth->imask = 0x00000000;
-
- /*
- * Set FEC-Lite receive control register(R_CNTRL):
- */
- if (fec->xcv_type == SEVENWIRE) {
- /*
- * Frame length=1518; 7-wire mode
- */
- fec->eth->r_cntrl = 0x05ee0020; /*0x05ee0000;FIXME */
- } else {
- /*
- * Frame length=1518; MII mode;
- */
- fec->eth->r_cntrl = 0x05ee0024; /*0x05ee0004;FIXME */
- }
-
- fec->eth->x_cntrl = 0x00000000; /* half-duplex, heartbeat disabled */
- if (fec->xcv_type != SEVENWIRE) {
- /*
- * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
- * and do not drop the Preamble.
- */
- fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
- }
-
- /*
- * Set Opcode/Pause Duration Register
- */
- fec->eth->op_pause = 0x00010020; /*FIXME 0xffff0020; */
-
- /*
- * Set Rx FIFO alarm and granularity value
- */
- fec->eth->rfifo_cntrl = 0x0c000000
- | (fec->eth->rfifo_cntrl & ~0x0f000000);
- fec->eth->rfifo_alarm = 0x0000030c;
-#if (DEBUG & 0x22)
- if (fec->eth->rfifo_status & 0x00700000 ) {
- printf("mpc5xxx_fec_init() RFIFO error\n");
- }
-#endif
-
- /*
- * Set Tx FIFO granularity value
- */
- fec->eth->tfifo_cntrl = 0x0c000000
- | (fec->eth->tfifo_cntrl & ~0x0f000000);
-#if (DEBUG & 0x2)
- printf("tfifo_status: 0x%08x\n", fec->eth->tfifo_status);
- printf("tfifo_alarm: 0x%08x\n", fec->eth->tfifo_alarm);
-#endif
-
- /*
- * Set transmit fifo watermark register(X_WMRK), default = 64
- */
- fec->eth->tfifo_alarm = 0x00000080;
- fec->eth->x_wmrk = 0x2;
-
- /*
- * Set individual address filter for unicast address
- * and set physical address registers.
- */
- mpc5xxx_fec_set_hwaddr(fec, (char *)dev->enetaddr);
-
- /*
- * Set multicast address filter
- */
- fec->eth->gaddr1 = 0x00000000;
- fec->eth->gaddr2 = 0x00000000;
-
- /*
- * Turn ON cheater FSM: ????
- */
- fec->eth->xmit_fsm = 0x03000000;
-
-#if defined(CONFIG_MPC5200)
- /*
- * Turn off COMM bus prefetch in the MGT5200 BestComm. It doesn't
- * work w/ the current receive task.
- */
- sdma->PtdCntrl |= 0x00000001;
-#endif
-
- /*
- * Set priority of different initiators
- */
- sdma->IPR0 = 7; /* always */
- sdma->IPR3 = 6; /* Eth RX */
- sdma->IPR4 = 5; /* Eth Tx */
-
- /*
- * Clear SmartDMA task interrupt pending bits
- */
- SDMA_CLEAR_IEVENT(FEC_RECV_TASK_NO);
-
- /*
- * Initialize SmartDMA parameters stored in SRAM
- */
- *(volatile int *)FEC_TBD_BASE = (int)fec->tbdBase;
- *(volatile int *)FEC_RBD_BASE = (int)fec->rbdBase;
- *(volatile int *)FEC_TBD_NEXT = (int)fec->tbdBase;
- *(volatile int *)FEC_RBD_NEXT = (int)fec->rbdBase;
-
- /*
- * Enable FEC-Lite controller
- */
- fec->eth->ecntrl |= 0x00000006;
-
-#if (DEBUG & 0x2)
- if (fec->xcv_type != SEVENWIRE)
- mpc5xxx_fec_phydump (dev->name);
-#endif
-
- /*
- * Enable SmartDMA receive task
- */
- SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
-
-#if (DEBUG & 0x1)
- printf("mpc5xxx_fec_init... Done \n");
-#endif
-
- return 1;
-}
-
-/********************************************************************/
-static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis)
-{
- mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
- const uint8 phyAddr = CONFIG_PHY_ADDR; /* Only one PHY */
-
-#if (DEBUG & 0x1)
- printf ("mpc5xxx_fec_init_phy... Begin\n");
-#endif
-
- /*
- * Initialize GPIO pins
- */
- if (fec->xcv_type == SEVENWIRE) {
- /* 10MBit with 7-wire operation */
-#if defined(CONFIG_TOTAL5200)
- /* 7-wire and USB2 on Ethernet */
- *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00030000;
-#else /* !CONFIG_TOTAL5200 */
- /* 7-wire only */
- *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00020000;
-#endif /* CONFIG_TOTAL5200 */
- } else {
- /* 100MBit with MD operation */
- *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00050000;
- }
-
- /*
- * Clear FEC-Lite interrupt event register(IEVENT)
- */
- fec->eth->ievent = 0xffffffff;
-
- /*
- * Set interrupt mask register
- */
- fec->eth->imask = 0x00000000;
-
-/*
- * In original Promess-provided code PHY initialization is disabled with the
- * following comment: "Phy initialization is DISABLED for now. There was a
- * problem with running 100 Mbps on PRO board". Thus we temporarily disable
- * PHY initialization for the Motion-PRO board, until a proper fix is found.
- */
-
- if (fec->xcv_type != SEVENWIRE) {
- /*
- * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
- * and do not drop the Preamble.
- */
- fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
- }
-
- if (fec->xcv_type != SEVENWIRE) {
- /*
- * Initialize PHY(LXT971A):
- *
- * Generally, on power up, the LXT971A reads its configuration
- * pins to check for forced operation, If not cofigured for
- * forced operation, it uses auto-negotiation/parallel detection
- * to automatically determine line operating conditions.
- * If the PHY device on the other side of the link supports
- * auto-negotiation, the LXT971A auto-negotiates with it
- * using Fast Link Pulse(FLP) Bursts. If the PHY partner does not
- * support auto-negotiation, the LXT971A automatically detects
- * the presence of either link pulses(10Mbps PHY) or Idle
- * symbols(100Mbps) and sets its operating conditions accordingly.
- *
- * When auto-negotiation is controlled by software, the following
- * steps are recommended.
- *
- * Note:
- * The physical address is dependent on hardware configuration.
- *
- */
- int timeout = 1;
- uint16 phyStatus;
-
- /*
- * Reset PHY, then delay 300ns
- */
- miiphy_write(dev->name, phyAddr, 0x0, 0x8000);
- udelay(1000);
-
-#if defined(CONFIG_UC101) || defined(CONFIG_MUCMC52)
- /* Set the LED configuration Register for the UC101
- and MUCMC52 Board */
- miiphy_write(dev->name, phyAddr, 0x14, 0x4122);
-#endif
- if (fec->xcv_type == MII10) {
- /*
- * Force 10Base-T, FDX operation
- */
-#if (DEBUG & 0x2)
- printf("Forcing 10 Mbps ethernet link... ");
-#endif
- miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
- /*
- miiphy_write(dev->name, fec, phyAddr, 0x0, 0x0100);
- */
- miiphy_write(dev->name, phyAddr, 0x0, 0x0180);
-
- timeout = 20;
- do { /* wait for link status to go down */
- udelay(10000);
- if ((timeout--) == 0) {
-#if (DEBUG & 0x2)
- printf("hmmm, should not have waited...");
-#endif
- break;
- }
- miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
-#if (DEBUG & 0x2)
- printf("=");
-#endif
- } while ((phyStatus & 0x0004)); /* !link up */
-
- timeout = 1000;
- do { /* wait for link status to come back up */
- udelay(10000);
- if ((timeout--) == 0) {
- printf("failed. Link is down.\n");
- break;
- }
- miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
-#if (DEBUG & 0x2)
- printf("+");
-#endif
- } while (!(phyStatus & 0x0004)); /* !link up */
-
-#if (DEBUG & 0x2)
- printf ("done.\n");
-#endif
- } else { /* MII100 */
- /*
- * Set the auto-negotiation advertisement register bits
- */
- miiphy_write(dev->name, phyAddr, 0x4, 0x01e1);
-
- /*
- * Set MDIO bit 0.12 = 1(&& bit 0.9=1?) to enable auto-negotiation
- */
- miiphy_write(dev->name, phyAddr, 0x0, 0x1200);
-
- /*
- * Wait for AN completion
- */
- timeout = 5000;
- do {
- udelay(1000);
-
- if ((timeout--) == 0) {
-#if (DEBUG & 0x2)
- printf("PHY auto neg 0 failed...\n");
-#endif
- return -1;
- }
-
- if (miiphy_read(dev->name, phyAddr, 0x1, &phyStatus) != 0) {
-#if (DEBUG & 0x2)
- printf("PHY auto neg 1 failed 0x%04x...\n", phyStatus);
-#endif
- return -1;
- }
- } while (!(phyStatus & 0x0004));
-
-#if (DEBUG & 0x2)
- printf("PHY auto neg complete! \n");
-#endif
- }
-
- }
-
-#if (DEBUG & 0x2)
- if (fec->xcv_type != SEVENWIRE)
- mpc5xxx_fec_phydump (dev->name);
-#endif
-
-
-#if (DEBUG & 0x1)
- printf("mpc5xxx_fec_init_phy... Done \n");
-#endif
-
- return 1;
-}
-
-/********************************************************************/
-static void mpc5xxx_fec_halt(struct eth_device *dev)
-{
-#if defined(CONFIG_MPC5200)
- struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
-#endif
- mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
- int counter = 0xffff;
-
-#if (DEBUG & 0x2)
- if (fec->xcv_type != SEVENWIRE)
- mpc5xxx_fec_phydump (dev->name);
-#endif
-
- /*
- * mask FEC chip interrupts
- */
- fec->eth->imask = 0;
-
- /*
- * issue graceful stop command to the FEC transmitter if necessary
- */
- fec->eth->x_cntrl |= 0x00000001;
-
- /*
- * wait for graceful stop to register
- */
- while ((counter--) && (!(fec->eth->ievent & 0x10000000))) ;
-
- /*
- * Disable SmartDMA tasks
- */
- SDMA_TASK_DISABLE (FEC_XMIT_TASK_NO);
- SDMA_TASK_DISABLE (FEC_RECV_TASK_NO);
-
-#if defined(CONFIG_MPC5200)
- /*
- * Turn on COMM bus prefetch in the MGT5200 BestComm after we're
- * done. It doesn't work w/ the current receive task.
- */
- sdma->PtdCntrl &= ~0x00000001;
-#endif
-
- /*
- * Disable the Ethernet Controller
- */
- fec->eth->ecntrl &= 0xfffffffd;
-
- /*
- * Clear FIFO status registers
- */
- fec->eth->rfifo_status &= 0x00700000;
- fec->eth->tfifo_status &= 0x00700000;
-
- fec->eth->reset_cntrl = 0x01000000;
-
- /*
- * Issue a reset command to the FEC chip
- */
- fec->eth->ecntrl |= 0x1;
-
- /*
- * wait at least 16 clock cycles
- */
- udelay(10);
-
-#if (DEBUG & 0x3)
- printf("Ethernet task stopped\n");
-#endif
-}
-
-#if (DEBUG & 0x60)
-/********************************************************************/
-
-static void tfifo_print(char *devname, mpc5xxx_fec_priv *fec)
-{
- uint16 phyAddr = CONFIG_PHY_ADDR;
- uint16 phyStatus;
-
- if ((fec->eth->tfifo_lrf_ptr != fec->eth->tfifo_lwf_ptr)
- || (fec->eth->tfifo_rdptr != fec->eth->tfifo_wrptr)) {
-
- miiphy_read(devname, phyAddr, 0x1, &phyStatus);
- printf("\nphyStatus: 0x%04x\n", phyStatus);
- printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
- printf("ievent: 0x%08x\n", fec->eth->ievent);
- printf("x_status: 0x%08x\n", fec->eth->x_status);
- printf("tfifo: status 0x%08x\n", fec->eth->tfifo_status);
-
- printf(" control 0x%08x\n", fec->eth->tfifo_cntrl);
- printf(" lrfp 0x%08x\n", fec->eth->tfifo_lrf_ptr);
- printf(" lwfp 0x%08x\n", fec->eth->tfifo_lwf_ptr);
- printf(" alarm 0x%08x\n", fec->eth->tfifo_alarm);
- printf(" readptr 0x%08x\n", fec->eth->tfifo_rdptr);
- printf(" writptr 0x%08x\n", fec->eth->tfifo_wrptr);
- }
-}
-
-static void rfifo_print(char *devname, mpc5xxx_fec_priv *fec)
-{
- uint16 phyAddr = CONFIG_PHY_ADDR;
- uint16 phyStatus;
-
- if ((fec->eth->rfifo_lrf_ptr != fec->eth->rfifo_lwf_ptr)
- || (fec->eth->rfifo_rdptr != fec->eth->rfifo_wrptr)) {
-
- miiphy_read(devname, phyAddr, 0x1, &phyStatus);
- printf("\nphyStatus: 0x%04x\n", phyStatus);
- printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
- printf("ievent: 0x%08x\n", fec->eth->ievent);
- printf("x_status: 0x%08x\n", fec->eth->x_status);
- printf("rfifo: status 0x%08x\n", fec->eth->rfifo_status);
-
- printf(" control 0x%08x\n", fec->eth->rfifo_cntrl);
- printf(" lrfp 0x%08x\n", fec->eth->rfifo_lrf_ptr);
- printf(" lwfp 0x%08x\n", fec->eth->rfifo_lwf_ptr);
- printf(" alarm 0x%08x\n", fec->eth->rfifo_alarm);
- printf(" readptr 0x%08x\n", fec->eth->rfifo_rdptr);
- printf(" writptr 0x%08x\n", fec->eth->rfifo_wrptr);
- }
-}
-#endif /* DEBUG */
-
-/********************************************************************/
-
-static int mpc5xxx_fec_send(struct eth_device *dev, volatile void *eth_data,
- int data_length)
-{
- /*
- * This routine transmits one frame. This routine only accepts
- * 6-byte Ethernet addresses.
- */
- mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
- volatile FEC_TBD *pTbd;
-
-#if (DEBUG & 0x20)
- printf("tbd status: 0x%04x\n", fec->tbdBase[0].status);
- tfifo_print(dev->name, fec);
-#endif
-
- /*
- * Clear Tx BD ring at first
- */
- mpc5xxx_fec_tbd_scrub(fec);
-
- /*
- * Check for valid length of data.
- */
- if ((data_length > 1500) || (data_length <= 0)) {
- return -1;
- }
-
- /*
- * Check the number of vacant TxBDs.
- */
- if (fec->cleanTbdNum < 1) {
-#if (DEBUG & 0x20)
- printf("No available TxBDs ...\n");
-#endif
- return -1;
- }
-
- /*
- * Get the first TxBD to send the mac header
- */
- pTbd = &fec->tbdBase[fec->tbdIndex];
- pTbd->dataLength = data_length;
- pTbd->dataPointer = (uint32)eth_data;
- pTbd->status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY;
- fec->tbdIndex = (fec->tbdIndex + 1) % FEC_TBD_NUM;
-
-#if (DEBUG & 0x100)
- printf("SDMA_TASK_ENABLE, fec->tbdIndex = %d \n", fec->tbdIndex);
-#endif
-
- /*
- * Kick the MII i/f
- */
- if (fec->xcv_type != SEVENWIRE) {
- uint16 phyStatus;
- miiphy_read(dev->name, 0, 0x1, &phyStatus);
- }
-
- /*
- * Enable SmartDMA transmit task
- */
-
-#if (DEBUG & 0x20)
- tfifo_print(dev->name, fec);
-#endif
- SDMA_TASK_ENABLE (FEC_XMIT_TASK_NO);
-#if (DEBUG & 0x20)
- tfifo_print(dev->name, fec);
-#endif
-#if (DEBUG & 0x8)
- printf( "+" );
-#endif
-
- fec->cleanTbdNum -= 1;
-
-#if (DEBUG & 0x129) && (DEBUG & 0x80000000)
- printf ("smartDMA ethernet Tx task enabled\n");
-#endif
- /*
- * wait until frame is sent .
- */
- while (pTbd->status & FEC_TBD_READY) {
- udelay(10);
-#if (DEBUG & 0x8)
- printf ("TDB status = %04x\n", pTbd->status);
-#endif
- }
-
- return 0;
-}
-
-
-/********************************************************************/
-static int mpc5xxx_fec_recv(struct eth_device *dev)
-{
- /*
- * This command pulls one frame from the card
- */
- mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
- volatile FEC_RBD *pRbd = &fec->rbdBase[fec->rbdIndex];
- unsigned long ievent;
- int frame_length, len = 0;
- NBUF *frame;
- uchar buff[FEC_MAX_PKT_SIZE];
-
-#if (DEBUG & 0x1)
- printf ("mpc5xxx_fec_recv %d Start...\n", fec->rbdIndex);
-#endif
-#if (DEBUG & 0x8)
- printf( "-" );
-#endif
-
- /*
- * Check if any critical events have happened
- */
- ievent = fec->eth->ievent;
- fec->eth->ievent = ievent;
- if (ievent & 0x20060000) {
- /* BABT, Rx/Tx FIFO errors */
- mpc5xxx_fec_halt(dev);
- mpc5xxx_fec_init(dev, NULL);
- return 0;
- }
- if (ievent & 0x80000000) {
- /* Heartbeat error */
- fec->eth->x_cntrl |= 0x00000001;
- }
- if (ievent & 0x10000000) {
- /* Graceful stop complete */
- if (fec->eth->x_cntrl & 0x00000001) {
- mpc5xxx_fec_halt(dev);
- fec->eth->x_cntrl &= ~0x00000001;
- mpc5xxx_fec_init(dev, NULL);
- }
- }
-
- if (!(pRbd->status & FEC_RBD_EMPTY)) {
- if ((pRbd->status & FEC_RBD_LAST) && !(pRbd->status & FEC_RBD_ERR) &&
- ((pRbd->dataLength - 4) > 14)) {
-
- /*
- * Get buffer address and size
- */
- frame = (NBUF *)pRbd->dataPointer;
- frame_length = pRbd->dataLength - 4;
-
-#if (DEBUG & 0x20)
- {
- int i;
- printf("recv data hdr:");
- for (i = 0; i < 14; i++)
- printf("%x ", *(frame->head + i));
- printf("\n");
- }
-#endif
- /*
- * Fill the buffer and pass it to upper layers
- */
- memcpy(buff, frame->head, 14);
- memcpy(buff + 14, frame->data, frame_length);
- NetReceive(buff, frame_length);
- len = frame_length;
- }
- /*
- * Reset buffer descriptor as empty
- */
- mpc5xxx_fec_rbd_clean(fec, pRbd);
- }
- SDMA_CLEAR_IEVENT (FEC_RECV_TASK_NO);
- return len;
-}
-
-
-/********************************************************************/
-int mpc5xxx_fec_initialize(bd_t * bis)
-{
- mpc5xxx_fec_priv *fec;
- struct eth_device *dev;
- char *tmp, *end;
- char env_enetaddr[6];
- int i;
-
- fec = (mpc5xxx_fec_priv *)malloc(sizeof(*fec));
- dev = (struct eth_device *)malloc(sizeof(*dev));
- memset(dev, 0, sizeof *dev);
-
- fec->eth = (ethernet_regs *)MPC5XXX_FEC;
- fec->tbdBase = (FEC_TBD *)FEC_BD_BASE;
- fec->rbdBase = (FEC_RBD *)(FEC_BD_BASE + FEC_TBD_NUM * sizeof(FEC_TBD));
-#if defined(CONFIG_CANMB) || \
- defined(CONFIG_CM5200) || \
- defined(CONFIG_HMI1001) || \
- defined(CONFIG_ICECUBE) || \
- defined(CONFIG_INKA4X0) || \
- defined(CONFIG_JUPITER) || \
- defined(CONFIG_MCC200) || \
- defined(CONFIG_MOTIONPRO) || \
- defined(CONFIG_MUCMC52) || \
- defined(CONFIG_O2DNT) || \
- defined(CONFIG_PM520) || \
- defined(CONFIG_TOP5200) || \
- defined(CONFIG_TQM5200) || \
- defined(CONFIG_UC101) || \
- defined(CONFIG_V38B) || \
- defined(CONFIG_MUNICES)
-# ifndef CONFIG_FEC_10MBIT
- fec->xcv_type = MII100;
-# else
- fec->xcv_type = MII10;
-# endif
-#elif defined(CONFIG_TOTAL5200)
- fec->xcv_type = SEVENWIRE;
-#else
-#error fec->xcv_type not initialized.
-#endif
-
- dev->priv = (void *)fec;
- dev->iobase = MPC5XXX_FEC;
- dev->init = mpc5xxx_fec_init;
- dev->halt = mpc5xxx_fec_halt;
- dev->send = mpc5xxx_fec_send;
- dev->recv = mpc5xxx_fec_recv;
-
- sprintf(dev->name, "FEC ETHERNET");
- eth_register(dev);
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
- miiphy_register (dev->name,
- fec5xxx_miiphy_read, fec5xxx_miiphy_write);
-#endif
-
- /*
- * Try to set the mac address now. The fec mac address is
- * a garbage after reset. When not using fec for booting
- * the Linux fec driver will try to work with this garbage.
- */
- tmp = getenv("ethaddr");
- if (tmp) {
- for (i=0; i<6; i++) {
- env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
- if (tmp)
- tmp = (*end) ? end+1 : end;
- }
- mpc5xxx_fec_set_hwaddr(fec, env_enetaddr);
- }
-
- mpc5xxx_fec_init_phy(dev, bis);
-
- return 1;
-}
-
-/* MII-interface related functions */
-/********************************************************************/
-int fec5xxx_miiphy_read(char *devname, uint8 phyAddr, uint8 regAddr, uint16 * retVal)
-{
- ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
- uint32 reg; /* convenient holder for the PHY register */
- uint32 phy; /* convenient holder for the PHY */
- int timeout = 0xffff;
-
- /*
- * reading from any PHY's register is done by properly
- * programming the FEC's MII data register.
- */
- reg = regAddr << FEC_MII_DATA_RA_SHIFT;
- phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
-
- eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_RD | FEC_MII_DATA_TA | phy | reg);
-
- /*
- * wait for the related interrupt
- */
- while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
-
- if (timeout == 0) {
-#if (DEBUG & 0x2)
- printf ("Read MDIO failed...\n");
-#endif
- return -1;
- }
-
- /*
- * clear mii interrupt bit
- */
- eth->ievent = 0x00800000;
-
- /*
- * it's now safe to read the PHY's register
- */
- *retVal = (uint16) eth->mii_data;
-
- return 0;
-}
-
-/********************************************************************/
-int fec5xxx_miiphy_write(char *devname, uint8 phyAddr, uint8 regAddr, uint16 data)
-{
- ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
- uint32 reg; /* convenient holder for the PHY register */
- uint32 phy; /* convenient holder for the PHY */
- int timeout = 0xffff;
-
- reg = regAddr << FEC_MII_DATA_RA_SHIFT;
- phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
-
- eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_WR |
- FEC_MII_DATA_TA | phy | reg | data);
-
- /*
- * wait for the MII interrupt
- */
- while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
-
- if (timeout == 0) {
-#if (DEBUG & 0x2)
- printf ("Write MDIO failed...\n");
-#endif
- return -1;
- }
-
- /*
- * clear MII interrupt bit
- */
- eth->ievent = 0x00800000;
-
- return 0;
-}
-
-#if (DEBUG & 0x40)
-static uint32 local_crc32(char *string, unsigned int crc_value, int len)
-{
- int i;
- char c;
- unsigned int crc, count;
-
- /*
- * crc32 algorithm
- */
- /*
- * crc = 0xffffffff; * The initialized value should be 0xffffffff
- */
- crc = crc_value;
-
- for (i = len; --i >= 0;) {
- c = *string++;
- for (count = 0; count < 8; count++) {
- if ((c & 0x01) ^ (crc & 0x01)) {
- crc >>= 1;
- crc = crc ^ 0xedb88320;
- } else {
- crc >>= 1;
- }
- c >>= 1;
- }
- }
-
- /*
- * In big endian system, do byte swaping for crc value
- */
- /**/ return crc;
-}
-#endif /* DEBUG */
-
-#endif /* CONFIG_MPC5xxx_FEC */