diff options
Diffstat (limited to 'arch/ppc/cpu/mpc8xx/scc.c')
-rw-r--r-- | arch/ppc/cpu/mpc8xx/scc.c | 572 |
1 files changed, 0 insertions, 572 deletions
diff --git a/arch/ppc/cpu/mpc8xx/scc.c b/arch/ppc/cpu/mpc8xx/scc.c deleted file mode 100644 index effb967..0000000 --- a/arch/ppc/cpu/mpc8xx/scc.c +++ /dev/null @@ -1,572 +0,0 @@ -/* - * File: scc.c - * Description: - * Basic ET HW initialization and packet RX/TX routines - * - * NOTE <<<IMPORTANT: PLEASE READ>>>: - * Do not cache Rx/Tx buffers! - */ - -/* - * MPC823 <-> MC68160 Connections: - * - * Setup MPC823 to work with MC68160 Enhanced Ethernet - * Serial Tranceiver as follows: - * - * MPC823 Signal MC68160 Comments - * ------ ------ ------- -------- - * PA-12 ETHTX --------> TX Eth. Port Transmit Data - * PB-18 E_TENA --------> TENA Eth. Transmit Port Enable - * PA-5 ETHTCK <-------- TCLK Eth. Port Transmit Clock - * PA-13 ETHRX <-------- RX Eth. Port Receive Data - * PC-8 E_RENA <-------- RENA Eth. Receive Enable - * PA-6 ETHRCK <-------- RCLK Eth. Port Receive Clock - * PC-9 E_CLSN <-------- CLSN Eth. Port Collision Indication - * - * FADS Board Signal MC68160 Comments - * ----------------- ------- -------- - * (BCSR1) ETHEN* --------> CS2 Eth. Port Enable - * (BSCR4) TPSQEL* --------> TPSQEL Twisted Pair Signal Quality Error Test Enable - * (BCSR4) TPFLDL* --------> TPFLDL Twisted Pair Full-Duplex - * (BCSR4) ETHLOOP --------> LOOP Eth. Port Diagnostic Loop-Back - * - */ - -#include <common.h> -#include <malloc.h> -#include <commproc.h> -#include <net.h> -#include <command.h> - -#if defined(CONFIG_CMD_NET) && defined(SCC_ENET) - -/* Ethernet Transmit and Receive Buffers */ -#define DBUF_LENGTH 1520 - -#define TX_BUF_CNT 2 - -#define TOUT_LOOP 10000 /* 10 ms to have a packet sent */ - -static char txbuf[DBUF_LENGTH]; - -static uint rxIdx; /* index of the current RX buffer */ -static uint txIdx; /* index of the current TX buffer */ - -/* - * SCC Ethernet Tx and Rx buffer descriptors allocated at the - * immr->udata_bd address on Dual-Port RAM - * Provide for Double Buffering - */ - -typedef volatile struct CommonBufferDescriptor { - cbd_t rxbd[PKTBUFSRX]; /* Rx BD */ - cbd_t txbd[TX_BUF_CNT]; /* Tx BD */ -} RTXBD; - -static RTXBD *rtx; - -static int scc_send(struct eth_device* dev, volatile void *packet, int length); -static int scc_recv(struct eth_device* dev); -static int scc_init (struct eth_device* dev, bd_t * bd); -static void scc_halt(struct eth_device* dev); - -int scc_initialize(bd_t *bis) -{ - struct eth_device* dev; - - dev = (struct eth_device*) malloc(sizeof *dev); - memset(dev, 0, sizeof *dev); - - sprintf(dev->name, "SCC ETHERNET"); - dev->iobase = 0; - dev->priv = 0; - dev->init = scc_init; - dev->halt = scc_halt; - dev->send = scc_send; - dev->recv = scc_recv; - - eth_register(dev); - - return 1; -} - -static int scc_send(struct eth_device* dev, volatile void *packet, int length) -{ - int i, j=0; -#if 0 - volatile char *in, *out; -#endif - - /* section 16.9.23.3 - * Wait for ready - */ -#if 0 - while (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY); - out = (char *)(rtx->txbd[txIdx].cbd_bufaddr); - in = packet; - for(i = 0; i < length; i++) { - *out++ = *in++; - } - rtx->txbd[txIdx].cbd_datlen = length; - rtx->txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST); - while (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) j++; - -#ifdef ET_DEBUG - printf("cycles: %d status: %x\n", j, rtx->txbd[txIdx].cbd_sc); -#endif - i = (rtx->txbd[txIdx++].cbd_sc & BD_ENET_TX_STATS) /* return only status bits */; - - /* wrap around buffer index when necessary */ - if (txIdx >= TX_BUF_CNT) txIdx = 0; -#endif - - while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) { - udelay (1); /* will also trigger Wd if needed */ - j++; - } - if (j>=TOUT_LOOP) printf("TX not ready\n"); - rtx->txbd[txIdx].cbd_bufaddr = (uint)packet; - rtx->txbd[txIdx].cbd_datlen = length; - rtx->txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST |BD_ENET_TX_WRAP); - while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) { - udelay (1); /* will also trigger Wd if needed */ - j++; - } - if (j>=TOUT_LOOP) printf("TX timeout\n"); -#ifdef ET_DEBUG - printf("cycles: %d status: %x\n", j, rtx->txbd[txIdx].cbd_sc); -#endif - i = (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS) /* return only status bits */; - return i; -} - -static int scc_recv (struct eth_device *dev) -{ - int length; - - for (;;) { - /* section 16.9.23.2 */ - if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) { - length = -1; - break; /* nothing received - leave for() loop */ - } - - length = rtx->rxbd[rxIdx].cbd_datlen; - - if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) { -#ifdef ET_DEBUG - printf ("err: %x\n", rtx->rxbd[rxIdx].cbd_sc); -#endif - } else { - /* Pass the packet up to the protocol layers. */ - NetReceive (NetRxPackets[rxIdx], length - 4); - } - - - /* Give the buffer back to the SCC. */ - rtx->rxbd[rxIdx].cbd_datlen = 0; - - /* wrap around buffer index when necessary */ - if ((rxIdx + 1) >= PKTBUFSRX) { - rtx->rxbd[PKTBUFSRX - 1].cbd_sc = - (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY); - rxIdx = 0; - } else { - rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY; - rxIdx++; - } - } - return length; -} - -/************************************************************** - * - * SCC Ethernet Initialization Routine - * - *************************************************************/ - -static int scc_init (struct eth_device *dev, bd_t * bis) -{ - - int i; - scc_enet_t *pram_ptr; - - volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - -#if defined(CONFIG_LWMON) - reset_phy(); -#endif - -#ifdef CONFIG_FADS -#if defined(CONFIG_MPC86xADS) || defined(CONFIG_MPC860T) - /* The MPC86xADS/FADS860T don't use the MODEM_EN or DATA_VOICE signals. */ - *((uint *) BCSR4) &= ~BCSR4_ETHLOOP; - *((uint *) BCSR4) |= BCSR4_TFPLDL | BCSR4_TPSQEL; - *((uint *) BCSR1) &= ~BCSR1_ETHEN; -#else - *((uint *) BCSR4) &= ~(BCSR4_ETHLOOP | BCSR4_MODEM_EN); - *((uint *) BCSR4) |= BCSR4_TFPLDL | BCSR4_TPSQEL | BCSR4_DATA_VOICE; - *((uint *) BCSR1) &= ~BCSR1_ETHEN; -#endif -#endif - - pram_ptr = (scc_enet_t *) & (immr->im_cpm.cp_dparam[PROFF_ENET]); - - rxIdx = 0; - txIdx = 0; - - if (!rtx) { -#ifdef CONFIG_SYS_ALLOC_DPRAM - rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + - dpram_alloc_align (sizeof (RTXBD), 8)); -#else - rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + CPM_SCC_BASE); -#endif - } - -#if (defined(PA_ENET_RXD) && defined(PA_ENET_TXD)) - /* Configure port A pins for Txd and Rxd. - */ - immr->im_ioport.iop_papar |= (PA_ENET_RXD | PA_ENET_TXD); - immr->im_ioport.iop_padir &= ~(PA_ENET_RXD | PA_ENET_TXD); - immr->im_ioport.iop_paodr &= ~PA_ENET_TXD; -#elif (defined(PB_ENET_RXD) && defined(PB_ENET_TXD)) - /* Configure port B pins for Txd and Rxd. - */ - immr->im_cpm.cp_pbpar |= (PB_ENET_RXD | PB_ENET_TXD); - immr->im_cpm.cp_pbdir &= ~(PB_ENET_RXD | PB_ENET_TXD); - immr->im_cpm.cp_pbodr &= ~PB_ENET_TXD; -#else -#error Configuration Error: exactly ONE of PA_ENET_[RT]XD, PB_ENET_[RT]XD must be defined -#endif - -#if defined(PC_ENET_LBK) - /* Configure port C pins to disable External Loopback - */ - immr->im_ioport.iop_pcpar &= ~PC_ENET_LBK; - immr->im_ioport.iop_pcdir |= PC_ENET_LBK; - immr->im_ioport.iop_pcso &= ~PC_ENET_LBK; - immr->im_ioport.iop_pcdat &= ~PC_ENET_LBK; /* Disable Loopback */ -#endif /* PC_ENET_LBK */ - - /* Configure port C pins to enable CLSN and RENA. - */ - immr->im_ioport.iop_pcpar &= ~(PC_ENET_CLSN | PC_ENET_RENA); - immr->im_ioport.iop_pcdir &= ~(PC_ENET_CLSN | PC_ENET_RENA); - immr->im_ioport.iop_pcso |= (PC_ENET_CLSN | PC_ENET_RENA); - - /* Configure port A for TCLK and RCLK. - */ - immr->im_ioport.iop_papar |= (PA_ENET_TCLK | PA_ENET_RCLK); - immr->im_ioport.iop_padir &= ~(PA_ENET_TCLK | PA_ENET_RCLK); - - /* - * Configure Serial Interface clock routing -- see section 16.7.5.3 - * First, clear all SCC bits to zero, then set the ones we want. - */ - - immr->im_cpm.cp_sicr &= ~SICR_ENET_MASK; - immr->im_cpm.cp_sicr |= SICR_ENET_CLKRT; - - - /* - * Initialize SDCR -- see section 16.9.23.7 - * SDMA configuration register - */ - immr->im_siu_conf.sc_sdcr = 0x01; - - - /* - * Setup SCC Ethernet Parameter RAM - */ - - pram_ptr->sen_genscc.scc_rfcr = 0x18; /* Normal Operation and Mot byte ordering */ - pram_ptr->sen_genscc.scc_tfcr = 0x18; /* Mot byte ordering, Normal access */ - - pram_ptr->sen_genscc.scc_mrblr = DBUF_LENGTH; /* max. ET package len 1520 */ - - pram_ptr->sen_genscc.scc_rbase = (unsigned int) (&rtx->rxbd[0]); /* Set RXBD tbl start at Dual Port */ - pram_ptr->sen_genscc.scc_tbase = (unsigned int) (&rtx->txbd[0]); /* Set TXBD tbl start at Dual Port */ - - /* - * Setup Receiver Buffer Descriptors (13.14.24.18) - * Settings: - * Empty, Wrap - */ - - for (i = 0; i < PKTBUFSRX; i++) { - rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY; - rtx->rxbd[i].cbd_datlen = 0; /* Reset */ - rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i]; - } - - rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP; - - /* - * Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19) - * Settings: - * Add PADs to Short FRAMES, Wrap, Last, Tx CRC - */ - - for (i = 0; i < TX_BUF_CNT; i++) { - rtx->txbd[i].cbd_sc = - (BD_ENET_TX_PAD | BD_ENET_TX_LAST | BD_ENET_TX_TC); - rtx->txbd[i].cbd_datlen = 0; /* Reset */ - rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]); - } - - rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP; - - /* - * Enter Command: Initialize Rx Params for SCC - */ - - do { /* Spin until ready to issue command */ - __asm__ ("eieio"); - } while (immr->im_cpm.cp_cpcr & CPM_CR_FLG); - /* Issue command */ - immr->im_cpm.cp_cpcr = - ((CPM_CR_INIT_RX << 8) | (CPM_CR_ENET << 4) | CPM_CR_FLG); - do { /* Spin until command processed */ - __asm__ ("eieio"); - } while (immr->im_cpm.cp_cpcr & CPM_CR_FLG); - - /* - * Ethernet Specific Parameter RAM - * see table 13-16, pg. 660, - * pg. 681 (example with suggested settings) - */ - - pram_ptr->sen_cpres = ~(0x0); /* Preset CRC */ - pram_ptr->sen_cmask = 0xdebb20e3; /* Constant Mask for CRC */ - pram_ptr->sen_crcec = 0x0; /* Error Counter CRC (unused) */ - pram_ptr->sen_alec = 0x0; /* Alignment Error Counter (unused) */ - pram_ptr->sen_disfc = 0x0; /* Discard Frame Counter (unused) */ - pram_ptr->sen_pads = 0x8888; /* Short Frame PAD Characters */ - - pram_ptr->sen_retlim = 15; /* Retry Limit Threshold */ - pram_ptr->sen_maxflr = 1518; /* MAX Frame Length Register */ - pram_ptr->sen_minflr = 64; /* MIN Frame Length Register */ - - pram_ptr->sen_maxd1 = DBUF_LENGTH; /* MAX DMA1 Length Register */ - pram_ptr->sen_maxd2 = DBUF_LENGTH; /* MAX DMA2 Length Register */ - - pram_ptr->sen_gaddr1 = 0x0; /* Group Address Filter 1 (unused) */ - pram_ptr->sen_gaddr2 = 0x0; /* Group Address Filter 2 (unused) */ - pram_ptr->sen_gaddr3 = 0x0; /* Group Address Filter 3 (unused) */ - pram_ptr->sen_gaddr4 = 0x0; /* Group Address Filter 4 (unused) */ - -#define ea eth_get_dev()->enetaddr - pram_ptr->sen_paddrh = (ea[5] << 8) + ea[4]; - pram_ptr->sen_paddrm = (ea[3] << 8) + ea[2]; - pram_ptr->sen_paddrl = (ea[1] << 8) + ea[0]; -#undef ea - - pram_ptr->sen_pper = 0x0; /* Persistence (unused) */ - pram_ptr->sen_iaddr1 = 0x0; /* Individual Address Filter 1 (unused) */ - pram_ptr->sen_iaddr2 = 0x0; /* Individual Address Filter 2 (unused) */ - pram_ptr->sen_iaddr3 = 0x0; /* Individual Address Filter 3 (unused) */ - pram_ptr->sen_iaddr4 = 0x0; /* Individual Address Filter 4 (unused) */ - pram_ptr->sen_taddrh = 0x0; /* Tmp Address (MSB) (unused) */ - pram_ptr->sen_taddrm = 0x0; /* Tmp Address (unused) */ - pram_ptr->sen_taddrl = 0x0; /* Tmp Address (LSB) (unused) */ - - /* - * Enter Command: Initialize Tx Params for SCC - */ - - do { /* Spin until ready to issue command */ - __asm__ ("eieio"); - } while (immr->im_cpm.cp_cpcr & CPM_CR_FLG); - /* Issue command */ - immr->im_cpm.cp_cpcr = - ((CPM_CR_INIT_TX << 8) | (CPM_CR_ENET << 4) | CPM_CR_FLG); - do { /* Spin until command processed */ - __asm__ ("eieio"); - } while (immr->im_cpm.cp_cpcr & CPM_CR_FLG); - - /* - * Mask all Events in SCCM - we use polling mode - */ - immr->im_cpm.cp_scc[SCC_ENET].scc_sccm = 0; - - /* - * Clear Events in SCCE -- Clear bits by writing 1's - */ - - immr->im_cpm.cp_scc[SCC_ENET].scc_scce = ~(0x0); - - - /* - * Initialize GSMR High 32-Bits - * Settings: Normal Mode - */ - - immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrh = 0; - - /* - * Initialize GSMR Low 32-Bits, but do not Enable Transmit/Receive - * Settings: - * TCI = Invert - * TPL = 48 bits - * TPP = Repeating 10's - * MODE = Ethernet - */ - - immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl = (SCC_GSMRL_TCI | - SCC_GSMRL_TPL_48 | - SCC_GSMRL_TPP_10 | - SCC_GSMRL_MODE_ENET); - - /* - * Initialize the DSR -- see section 13.14.4 (pg. 513) v0.4 - */ - - immr->im_cpm.cp_scc[SCC_ENET].scc_dsr = 0xd555; - - /* - * Initialize the PSMR - * Settings: - * CRC = 32-Bit CCITT - * NIB = Begin searching for SFD 22 bits after RENA - * FDE = Full Duplex Enable - * LPB = Loopback Enable (Needed when FDE is set) - * BRO = Reject broadcast packets - * PROMISCOUS = Catch all packets regardless of dest. MAC adress - */ - immr->im_cpm.cp_scc[SCC_ENET].scc_psmr = SCC_PSMR_ENCRC | - SCC_PSMR_NIB22 | -#if defined(CONFIG_SCC_ENET_FULL_DUPLEX) - SCC_PSMR_FDE | SCC_PSMR_LPB | -#endif -#if defined(CONFIG_SCC_ENET_NO_BROADCAST) - SCC_PSMR_BRO | -#endif -#if defined(CONFIG_SCC_ENET_PROMISCOUS) - SCC_PSMR_PRO | -#endif - 0; - - /* - * Configure Ethernet TENA Signal - */ - -#if (defined(PC_ENET_TENA) && !defined(PB_ENET_TENA)) - immr->im_ioport.iop_pcpar |= PC_ENET_TENA; - immr->im_ioport.iop_pcdir &= ~PC_ENET_TENA; -#elif (defined(PB_ENET_TENA) && !defined(PC_ENET_TENA)) - immr->im_cpm.cp_pbpar |= PB_ENET_TENA; - immr->im_cpm.cp_pbdir |= PB_ENET_TENA; -#else -#error Configuration Error: exactly ONE of PB_ENET_TENA, PC_ENET_TENA must be defined -#endif - -#if defined(CONFIG_ADS) && defined(CONFIG_MPC860) - /* - * Port C is used to control the PHY,MC68160. - */ - immr->im_ioport.iop_pcdir |= - (PC_ENET_ETHLOOP | PC_ENET_TPFLDL | PC_ENET_TPSQEL); - - immr->im_ioport.iop_pcdat |= PC_ENET_TPFLDL; - immr->im_ioport.iop_pcdat &= ~(PC_ENET_ETHLOOP | PC_ENET_TPSQEL); - *((uint *) BCSR1) &= ~BCSR1_ETHEN; -#endif /* MPC860ADS */ - -#if defined(CONFIG_AMX860) - /* - * Port B is used to control the PHY,MC68160. - */ - immr->im_cpm.cp_pbdir |= - (PB_ENET_ETHLOOP | PB_ENET_TPFLDL | PB_ENET_TPSQEL); - - immr->im_cpm.cp_pbdat |= PB_ENET_TPFLDL; - immr->im_cpm.cp_pbdat &= ~(PB_ENET_ETHLOOP | PB_ENET_TPSQEL); - - immr->im_ioport.iop_pddir |= PD_ENET_ETH_EN; - immr->im_ioport.iop_pddat &= ~PD_ENET_ETH_EN; -#endif /* AMX860 */ - -#ifdef CONFIG_RPXCLASSIC - *((uchar *) BCSR0) &= ~BCSR0_ETHLPBK; - *((uchar *) BCSR0) |= (BCSR0_ETHEN | BCSR0_COLTEST | BCSR0_FULLDPLX); -#endif - -#ifdef CONFIG_RPXLITE - *((uchar *) BCSR0) |= BCSR0_ETHEN; -#endif - -#if defined(CONFIG_QS860T) - /* - * PB27=FDE-, set output low for full duplex - * PB26=Link Test Enable, normally high output - */ - immr->im_cpm.cp_pbdir |= 0x00000030; - immr->im_cpm.cp_pbdat |= 0x00000020; - immr->im_cpm.cp_pbdat &= ~0x00000010; -#endif /* QS860T */ - -#ifdef CONFIG_MBX - board_ether_init (); -#endif - -#if defined(CONFIG_NETVIA) -#if defined(PA_ENET_PDN) - immr->im_ioport.iop_papar &= ~PA_ENET_PDN; - immr->im_ioport.iop_padir |= PA_ENET_PDN; - immr->im_ioport.iop_padat |= PA_ENET_PDN; -#elif defined(PB_ENET_PDN) - immr->im_cpm.cp_pbpar &= ~PB_ENET_PDN; - immr->im_cpm.cp_pbdir |= PB_ENET_PDN; - immr->im_cpm.cp_pbdat |= PB_ENET_PDN; -#elif defined(PC_ENET_PDN) - immr->im_ioport.iop_pcpar &= ~PC_ENET_PDN; - immr->im_ioport.iop_pcdir |= PC_ENET_PDN; - immr->im_ioport.iop_pcdat |= PC_ENET_PDN; -#elif defined(PD_ENET_PDN) - immr->im_ioport.iop_pdpar &= ~PD_ENET_PDN; - immr->im_ioport.iop_pddir |= PD_ENET_PDN; - immr->im_ioport.iop_pddat |= PD_ENET_PDN; -#endif -#endif - - /* - * Set the ENT/ENR bits in the GSMR Low -- Enable Transmit/Receive - */ - - immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl |= - (SCC_GSMRL_ENR | SCC_GSMRL_ENT); - - /* - * Work around transmit problem with first eth packet - */ -#if defined (CONFIG_FADS) - udelay (10000); /* wait 10 ms */ -#elif defined (CONFIG_AMX860) || defined(CONFIG_RPXCLASSIC) - udelay (100000); /* wait 100 ms */ -#endif - - return 1; -} - - -static void scc_halt (struct eth_device *dev) -{ - volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - - immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl &= - ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); - - immr->im_ioport.iop_pcso &= ~(PC_ENET_CLSN | PC_ENET_RENA); -} - -#if 0 -void restart (void) -{ - volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - - immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl |= - (SCC_GSMRL_ENR | SCC_GSMRL_ENT); -} -#endif -#endif |