/* * (C) Copyright 2002 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * SPDX-License-Identifier: GPL-2.0+ */ #include /* * Ethernet test * * The Serial Communication Controllers (SCC) listed in ctlr_list array below * are tested in the loopback ethernet mode. * The controllers are configured accordingly and several packets * are transmitted. The configurable test parameters are: * MIN_PACKET_LENGTH - minimum size of packet to transmit * MAX_PACKET_LENGTH - maximum size of packet to transmit * TEST_NUM - number of tests */ #include #if CONFIG_POST & CONFIG_SYS_POST_ETHER #if defined(CONFIG_8xx) #include #elif defined(CONFIG_MPC8260) #include #else #error "Apparently a bad configuration, please fix." #endif #include #include #include DECLARE_GLOBAL_DATA_PTR; #define MIN_PACKET_LENGTH 64 #define MAX_PACKET_LENGTH 256 #define TEST_NUM 1 #define CTLR_SCC 0 extern void spi_init_f (void); extern void spi_init_r (void); /* The list of controllers to test */ #if defined(CONFIG_MPC823) static int ctlr_list[][2] = { {CTLR_SCC, 1} }; #else static int ctlr_list[][2] = { }; #endif static struct { void (*init) (int index); void (*halt) (int index); int (*send) (int index, volatile void *packet, int length); int (*recv) (int index, void *packet, int length); } ctlr_proc[1]; static char *ctlr_name[1] = { "SCC" }; /* Ethernet Transmit and Receive Buffers */ #define DBUF_LENGTH 1520 #define TX_BUF_CNT 2 #define TOUT_LOOP 100 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; /* * SCC callbacks */ static void scc_init (int scc_index) { uchar ea[6]; static int proff[] = { PROFF_SCC1, PROFF_SCC2, PROFF_SCC3, PROFF_SCC4, }; static unsigned int cpm_cr[] = { CPM_CR_CH_SCC1, CPM_CR_CH_SCC2, CPM_CR_CH_SCC3, CPM_CR_CH_SCC4, }; int i; scc_enet_t *pram_ptr; volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; immr->im_cpm.cp_scc[scc_index].scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); pram_ptr = (scc_enet_t *) & (immr->im_cpm.cp_dparam[proff[scc_index]]); rxIdx = 0; txIdx = 0; rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + CPM_SCC_BASE); #if 0 #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; #else /* * SCC2 receive clock is BRG2 * SCC2 transmit clock is BRG3 */ immr->im_cpm.cp_brgc2 = 0x0001000C; immr->im_cpm.cp_brgc3 = 0x0001000C; immr->im_cpm.cp_sicr &= ~0x00003F00; immr->im_cpm.cp_sicr |= 0x00000a00; #endif /* 0 */ /* * 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) net_rx_packets[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[scc_index] << 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) */ eth_getenv_enetaddr("ethaddr", ea); 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]; 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[scc_index] << 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_index].scc_sccm = 0; /* * Clear Events in SCCE -- Clear bits by writing 1's */ immr->im_cpm.cp_scc[scc_index].scc_scce = ~(0x0); /* * Initialize GSMR High 32-Bits * Settings: Normal Mode */ immr->im_cpm.cp_scc[scc_index].scc_gsmrh = 0; /* * Initialize GSMR Low 32-Bits, but do not Enable Transmit/Receive * Settings: * TCI = Invert * TPL = 48 bits * TPP = Repeating 10's * LOOP = Loopback * MODE = Ethernet */ immr->im_cpm.cp_scc[scc_index].scc_gsmrl = (SCC_GSMRL_TCI | SCC_GSMRL_TPL_48 | SCC_GSMRL_TPP_10 | SCC_GSMRL_DIAG_LOOP | SCC_GSMRL_MODE_ENET); /* * Initialize the DSR -- see section 13.14.4 (pg. 513) v0.4 */ immr->im_cpm.cp_scc[scc_index].scc_dsr = 0xd555; /* * Initialize the PSMR * Settings: * CRC = 32-Bit CCITT * NIB = Begin searching for SFD 22 bits after RENA * LPB = Loopback Enable (Needed when FDE is set) */ immr->im_cpm.cp_scc[scc_index].scc_psmr = SCC_PSMR_ENCRC | SCC_PSMR_NIB22 | SCC_PSMR_LPB; /* * Set the ENT/ENR bits in the GSMR Low -- Enable Transmit/Receive */ immr->im_cpm.cp_scc[scc_index].scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT); } static void scc_halt (int scc_index) { volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; immr->im_cpm.cp_scc[scc_index].scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); immr->im_ioport.iop_pcso &= ~(PC_ENET_CLSN | PC_ENET_RENA); } static int scc_send (int index, volatile void *packet, int length) { int i, j = 0; 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"); i = (rtx->txbd[txIdx]. cbd_sc & BD_ENET_TX_STATS) /* return only status bits */ ; return i; } static int scc_recv (int index, void *packet, int max_length) { int length = -1; if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) { goto Done; /* nothing received */ } if (!(rtx->rxbd[rxIdx].cbd_sc & 0x003f)) { length = rtx->rxbd[rxIdx].cbd_datlen - 4; memcpy (packet, (void *)(net_rx_packets[rxIdx]), length < max_length ? length : max_length); } /* 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++; } Done: return length; } /* * Test routines */ static void packet_fill (char *packet, int length) { char c = (char) length; int i; packet[0] = 0xFF; packet[1] = 0xFF; packet[2] = 0xFF; packet[3] = 0xFF; packet[4] = 0xFF; packet[5] = 0xFF; for (i = 6; i < length; i++) { packet[i] = c++; } } static int packet_check (char *packet, int length) { char c = (char) length; int i; for (i = 6; i < length; i++) { if (packet[i] != c++) return -1; } return 0; } static int test_ctlr (int ctlr, int index) { int res = -1; char packet_send[MAX_PACKET_LENGTH]; char packet_recv[MAX_PACKET_LENGTH]; int length; int i; int l; ctlr_proc[ctlr].init (index); for (i = 0; i < TEST_NUM; i++) { for (l = MIN_PACKET_LENGTH; l <= MAX_PACKET_LENGTH; l++) { packet_fill (packet_send, l); ctlr_proc[ctlr].send (index, packet_send, l); length = ctlr_proc[ctlr].recv (index, packet_recv, MAX_PACKET_LENGTH); if (length != l || packet_check (packet_recv, length) < 0) { goto Done; } } } res = 0; Done: ctlr_proc[ctlr].halt (index); /* * SCC2 Ethernet parameter RAM space overlaps * the SPI parameter RAM space. So we need to restore * the SPI configuration after SCC2 ethernet test. */ #if defined(CONFIG_SPI) if (ctlr == CTLR_SCC && index == 1) { spi_init_f (); spi_init_r (); } #endif if (res != 0) { post_log ("ethernet %s%d test failed\n", ctlr_name[ctlr], index + 1); } return res; } int ether_post_test (int flags) { int res = 0; int i; ctlr_proc[CTLR_SCC].init = scc_init; ctlr_proc[CTLR_SCC].halt = scc_halt; ctlr_proc[CTLR_SCC].send = scc_send; ctlr_proc[CTLR_SCC].recv = scc_recv; for (i = 0; i < ARRAY_SIZE(ctlr_list); i++) { if (test_ctlr (ctlr_list[i][0], ctlr_list[i][1]) != 0) { res = -1; } } #if !defined(CONFIG_8xx_CONS_NONE) serial_reinit_all (); #endif return res; } #endif /* CONFIG_POST & CONFIG_SYS_POST_ETHER */