diff options
Diffstat (limited to 'arch/ppc/cpu/mpc8220/fec.c')
| -rw-r--r-- | arch/ppc/cpu/mpc8220/fec.c | 1000 |
1 files changed, 0 insertions, 1000 deletions
diff --git a/arch/ppc/cpu/mpc8220/fec.c b/arch/ppc/cpu/mpc8220/fec.c deleted file mode 100644 index 992e0ff..0000000 --- a/arch/ppc/cpu/mpc8220/fec.c +++ /dev/null @@ -1,1000 +0,0 @@ -/* - * (C) Copyright 2003 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * This file is based on mpc4200fec.c, - * (C) Copyright Motorola, Inc., 2000 - */ - -#include <common.h> -#include <mpc8220.h> -#include <malloc.h> -#include <net.h> -#include <miiphy.h> -#include "dma.h" -#include "fec.h" - -#undef DEBUG -#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI) && \ - defined(CONFIG_MPC8220_FEC) - -#if !(defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) -#error "CONFIG_MII has to be defined!" -#endif - -#ifdef DEBUG -static void tfifo_print (char *devname, mpc8220_fec_priv * fec); -static void rfifo_print (char *devname, mpc8220_fec_priv * fec); -#endif /* DEBUG */ - -#ifdef DEBUG -static u32 local_crc32 (char *string, unsigned int crc_value, int len); -#endif - -typedef struct { - u8 data[1500]; /* actual data */ - int length; /* actual length */ - int used; /* buffer in use or not */ - u8 head[16]; /* MAC header(6 + 6 + 2) + 2(aligned) */ -} NBUF; - -int fec8220_miiphy_read (char *devname, u8 phyAddr, u8 regAddr, u16 * retVal); -int fec8220_miiphy_write (char *devname, u8 phyAddr, u8 regAddr, u16 data); - -/********************************************************************/ -#ifdef DEBUG -static void mpc8220_fec_phydump (char *devname) -{ - u16 phyStatus, i; - u8 phyAddr = CONFIG_PHY_ADDR; - u8 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 mpc8220_fec_rbd_init (mpc8220_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 = (u32) 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 mpc8220_fec_tbd_init (mpc8220_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 mpc8220_fec_rbd_clean (mpc8220_fec_priv * fec, 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 - */ - DMA_TASK_ENABLE (FEC_RECV_TASK_NO); - - /* - * Increment BD count - */ - fec->rbdIndex = (fec->rbdIndex + 1) % FEC_RBD_NUM; -} - -/********************************************************************/ -static void mpc8220_fec_tbd_scrub (mpc8220_fec_priv * fec) -{ - FEC_TBD *pUsedTbd; - -#ifdef DEBUG - 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) { -#ifdef DEBUG - 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 mpc8220_fec_set_hwaddr (mpc8220_fec_priv * fec, char *mac) -{ - u8 currByte; /* byte for which to compute the CRC */ - int byte; /* loop - counter */ - int bit; /* loop - counter */ - u32 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 mpc8220_fec_init (struct eth_device *dev, bd_t * bis) -{ - mpc8220_fec_priv *fec = (mpc8220_fec_priv *) dev->priv; - struct mpc8220_dma *dma = (struct mpc8220_dma *) MMAP_DMA; - const u8 phyAddr = CONFIG_PHY_ADDR; /* Only one PHY */ - -#ifdef DEBUG - printf ("mpc8220_fec_init... Begin\n"); -#endif - - /* - * Initialize RxBD/TxBD rings - */ - mpc8220_fec_rbd_init (fec); - mpc8220_fec_tbd_init (fec); - - /* - * Set up Pin Muxing for FEC 1 - */ - *(vu_long *) MMAP_PCFG = 0; - *(vu_long *) (MMAP_PCFG + 4) = 0; - /* - * 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. - */ - /* tbd - rtm */ - /*fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); */ - /* No MII for 7-wire mode */ - fec->eth->mii_speed = 0x00000030; - } - - /* - * Set Opcode/Pause Duration Register - */ - fec->eth->op_pause = 0x00010020; /*FIXME0xffff0020; */ - - /* - * Set Rx FIFO alarm and granularity value - */ - fec->eth->rfifo_cntrl = 0x0c000000; - fec->eth->rfifo_alarm = 0x0000030c; -#ifdef DEBUG - if (fec->eth->rfifo_status & 0x00700000) { - printf ("mpc8220_fec_init() RFIFO error\n"); - } -#endif - - /* - * Set Tx FIFO granularity value - */ - /*fec->eth->tfifo_cntrl = 0x0c000000; */ /*tbd - rtm */ - fec->eth->tfifo_cntrl = 0x0e000000; -#ifdef DEBUG - 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. - */ - mpc8220_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 1 -/*#if defined(CONFIG_MPC5200)*/ - /* - * Turn off COMM bus prefetch in the MGT5200 BestComm. It doesn't - * work w/ the current receive task. - */ - dma->PtdCntrl |= 0x00000001; -#endif - - /* - * Set priority of different initiators - */ - dma->IPR0 = 7; /* always */ - dma->IPR3 = 6; /* Eth RX */ - dma->IPR4 = 5; /* Eth Tx */ - - /* - * Clear SmartDMA task interrupt pending bits - */ - DMA_CLEAR_IEVENT (FEC_RECV_TASK_NO); - - /* - * Initialize SmartDMA parameters stored in SRAM - */ - *(int *) FEC_TBD_BASE = (int) fec->tbdBase; - *(int *) FEC_RBD_BASE = (int) fec->rbdBase; - *(int *) FEC_TBD_NEXT = (int) fec->tbdBase; - *(int *) FEC_RBD_NEXT = (int) fec->rbdBase; - - 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; - u16 phyStatus; - - /* - * Reset PHY, then delay 300ns - */ - miiphy_write (dev->name, phyAddr, 0x0, 0x8000); - udelay (1000); - - if (fec->xcv_type == MII10) { - /* - * Force 10Base-T, FDX operation - */ -#ifdef DEBUG - printf ("Forcing 10 Mbps ethernet link... "); -#endif - miiphy_read (dev->name, phyAddr, 0x1, &phyStatus); - /* - miiphy_write(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) { -#ifdef DEBUG - printf ("hmmm, should not have waited..."); -#endif - break; - } - miiphy_read (dev->name, phyAddr, 0x1, &phyStatus); -#ifdef DEBUG - 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); -#ifdef DEBUG - printf ("+"); -#endif - } while (!(phyStatus & 0x0004)); /* !link up */ - -#ifdef DEBUG - 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) { -#ifdef DEBUG - printf ("PHY auto neg 0 failed...\n"); -#endif - return -1; - } - - if (miiphy_read (dev->name, phyAddr, 0x1, &phyStatus) != - 0) { -#ifdef DEBUG - printf ("PHY auto neg 1 failed 0x%04x...\n", phyStatus); -#endif - return -1; - } - } while (!(phyStatus & 0x0004)); - -#ifdef DEBUG - printf ("PHY auto neg complete! \n"); -#endif - } - - } - - /* - * Enable FEC-Lite controller - */ - fec->eth->ecntrl |= 0x00000006; - -#ifdef DEBUG - if (fec->xcv_type != SEVENWIRE) - mpc8220_fec_phydump (dev->name); -#endif - - /* - * Enable SmartDMA receive task - */ - DMA_TASK_ENABLE (FEC_RECV_TASK_NO); - -#ifdef DEBUG - printf ("mpc8220_fec_init... Done \n"); -#endif - - return 1; -} - -/********************************************************************/ -static void mpc8220_fec_halt (struct eth_device *dev) -{ - mpc8220_fec_priv *fec = (mpc8220_fec_priv *) dev->priv; - int counter = 0xffff; - -#ifdef DEBUG - if (fec->xcv_type != SEVENWIRE) - mpc8220_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 - */ - DMA_TASK_DISABLE (FEC_XMIT_TASK_NO); - DMA_TASK_DISABLE (FEC_RECV_TASK_NO); - - /* - * 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); - -#ifdef DEBUG - printf ("Ethernet task stopped\n"); -#endif -} - -#ifdef DEBUG -/********************************************************************/ - -static void tfifo_print (char *devname, mpc8220_fec_priv * fec) -{ - u16 phyAddr = CONFIG_PHY_ADDR; - u16 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, mpc8220_fec_priv * fec) -{ - u16 phyAddr = CONFIG_PHY_ADDR; - u16 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 mpc8220_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. - */ - mpc8220_fec_priv *fec = (mpc8220_fec_priv *) dev->priv; - FEC_TBD *pTbd; - -#ifdef DEBUG - printf ("tbd status: 0x%04x\n", fec->tbdBase[0].status); - tfifo_print (dev->name, fec); -#endif - - /* - * Clear Tx BD ring at first - */ - mpc8220_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) { -#ifdef DEBUG - 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 = (u32) eth_data; - pTbd->status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY; - fec->tbdIndex = (fec->tbdIndex + 1) % FEC_TBD_NUM; - -#ifdef DEBUG - printf ("DMA_TASK_ENABLE, fec->tbdIndex = %d \n", fec->tbdIndex); -#endif - - /* - * Kick the MII i/f - */ - if (fec->xcv_type != SEVENWIRE) { - u16 phyStatus; - - miiphy_read (dev->name, 0, 0x1, &phyStatus); - } - - /* - * Enable SmartDMA transmit task - */ - -#ifdef DEBUG - tfifo_print (dev->name, fec); -#endif - - DMA_TASK_ENABLE (FEC_XMIT_TASK_NO); - -#ifdef DEBUG - tfifo_print (dev->name, fec); -#endif - -#ifdef DEBUG - printf ("+"); -#endif - - fec->cleanTbdNum -= 1; - -#ifdef DEBUG - printf ("smartDMA ethernet Tx task enabled\n"); -#endif - /* - * wait until frame is sent . - */ - while (pTbd->status & FEC_TBD_READY) { - udelay (10); -#ifdef DEBUG - printf ("TDB status = %04x\n", pTbd->status); -#endif - } - - return 0; -} - - -/********************************************************************/ -static int mpc8220_fec_recv (struct eth_device *dev) -{ - /* - * This command pulls one frame from the card - */ - mpc8220_fec_priv *fec = (mpc8220_fec_priv *) dev->priv; - FEC_RBD *pRbd = &fec->rbdBase[fec->rbdIndex]; - unsigned long ievent; - int frame_length, len = 0; - NBUF *frame; - -#ifdef DEBUG - printf ("mpc8220_fec_recv %d Start...\n", fec->rbdIndex); - 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 */ - mpc8220_fec_halt (dev); - mpc8220_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) { - mpc8220_fec_halt (dev); - fec->eth->x_cntrl &= ~0x00000001; - mpc8220_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 (0) - { - 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 ((volatile uchar *) pRbd->dataPointer, - frame_length); - len = frame_length; - } - /* - * Reset buffer descriptor as empty - */ - mpc8220_fec_rbd_clean (fec, pRbd); - } - DMA_CLEAR_IEVENT (FEC_RECV_TASK_NO); - return len; -} - - -/********************************************************************/ -int mpc8220_fec_initialize (bd_t * bis) -{ - mpc8220_fec_priv *fec; - -#ifdef CONFIG_HAS_ETH1 - mpc8220_fec_priv *fec2; -#endif - struct eth_device *dev; - char *tmp, *end; - char env_enetaddr[6]; - -#ifdef CONFIG_HAS_ETH1 - char env_enet1addr[6]; -#endif - int i; - - fec = (mpc8220_fec_priv *) malloc (sizeof (*fec)); - dev = (struct eth_device *) malloc (sizeof (*dev)); - memset (dev, 0, sizeof *dev); - - fec->eth = (ethernet_regs *) MMAP_FEC1; -#ifdef CONFIG_HAS_ETH1 - fec2 = (mpc8220_fec_priv *) malloc (sizeof (*fec)); - fec2->eth = (ethernet_regs *) MMAP_FEC2; -#endif - fec->tbdBase = (FEC_TBD *) FEC_BD_BASE; - fec->rbdBase = - (FEC_RBD *) (FEC_BD_BASE + FEC_TBD_NUM * sizeof (FEC_TBD)); - fec->xcv_type = MII100; - - dev->priv = (void *) fec; - dev->iobase = MMAP_FEC1; - dev->init = mpc8220_fec_init; - dev->halt = mpc8220_fec_halt; - dev->send = mpc8220_fec_send; - dev->recv = mpc8220_fec_recv; - - sprintf (dev->name, "FEC ETHERNET"); - eth_register (dev); - -#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) - miiphy_register (dev->name, - fec8220_miiphy_read, fec8220_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; - } - mpc8220_fec_set_hwaddr (fec, env_enetaddr); - } -#ifdef CONFIG_HAS_ETH1 - tmp = getenv ("eth1addr"); - if (tmp) { - for (i = 0; i < 6; i++) { - env_enet1addr[i] = - tmp ? simple_strtoul (tmp, &end, 16) : 0; - if (tmp) - tmp = (*end) ? end + 1 : end; - } - mpc8220_fec_set_hwaddr (fec2, env_enet1addr); - } -#endif - - return 1; -} - -/* MII-interface related functions */ -/********************************************************************/ -int fec8220_miiphy_read (char *devname, u8 phyAddr, u8 regAddr, u16 * retVal) -{ - ethernet_regs *eth = (ethernet_regs *) MMAP_FEC1; - u32 reg; /* convenient holder for the PHY register */ - u32 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) { -#ifdef DEBUG - 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 = (u16) eth->mii_data; - - return 0; -} - -/********************************************************************/ -int fec8220_miiphy_write (char *devname, u8 phyAddr, u8 regAddr, u16 data) -{ - ethernet_regs *eth = (ethernet_regs *) MMAP_FEC1; - u32 reg; /* convenient holder for the PHY register */ - u32 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) { -#ifdef DEBUG - printf ("Write MDIO failed...\n"); -#endif - return -1; - } - - /* - * clear MII interrupt bit - */ - eth->ievent = 0x00800000; - - return 0; -} - -#ifdef DEBUG -static u32 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_MPC8220_FEC */ |