diff options
Diffstat (limited to 'cpu/ppc4xx/440gx_enet.c')
| -rw-r--r-- | cpu/ppc4xx/440gx_enet.c | 1144 |
1 files changed, 1144 insertions, 0 deletions
diff --git a/cpu/ppc4xx/440gx_enet.c b/cpu/ppc4xx/440gx_enet.c new file mode 100644 index 0000000..617a174 --- /dev/null +++ b/cpu/ppc4xx/440gx_enet.c @@ -0,0 +1,1144 @@ +/*-----------------------------------------------------------------------------+ + * + * This source code has been made available to you by IBM on an AS-IS + * basis. Anyone receiving this source is licensed under IBM + * copyrights to use it in any way he or she deems fit, including + * copying it, modifying it, compiling it, and redistributing it either + * with or without modifications. No license under IBM patents or + * patent applications is to be implied by the copyright license. + * + * Any user of this software should understand that IBM cannot provide + * technical support for this software and will not be responsible for + * any consequences resulting from the use of this software. + * + * Any person who transfers this source code or any derivative work + * must include the IBM copyright notice, this paragraph, and the + * preceding two paragraphs in the transferred software. + * + * COPYRIGHT I B M CORPORATION 1995 + * LICENSED MATERIAL - PROGRAM PROPERTY OF I B M + *-----------------------------------------------------------------------------*/ +/*-----------------------------------------------------------------------------+ + * + * File Name: enetemac.c + * + * Function: Device driver for the ethernet EMAC3 macro on the 405GP. + * + * Author: Mark Wisner + * + * Change Activity- + * + * Date Description of Change BY + * --------- --------------------- --- + * 05-May-99 Created MKW + * 27-Jun-99 Clean up JWB + * 16-Jul-99 Added MAL error recovery and better IP packet handling MKW + * 29-Jul-99 Added Full duplex support MKW + * 06-Aug-99 Changed names for Mal CR reg MKW + * 23-Aug-99 Turned off SYE when running at 10Mbs MKW + * 24-Aug-99 Marked descriptor empty after call_xlc MKW + * 07-Sep-99 Set MAL RX buffer size reg to ENET_MAX_MTU_ALIGNED / 16 MCG + * to avoid chaining maximum sized packets. Push starting + * RX descriptor address up to the next cache line boundary. + * 16-Jan-00 Added support for booting with IP of 0x0 MKW + * 15-Mar-00 Updated enetInit() to enable broadcast addresses in the + * EMAC_RXM register. JWB + * 12-Mar-01 anne-sophie.harnois@nextream.fr + * - Variables are compatible with those already defined in + * include/net.h + * - Receive buffer descriptor ring is used to send buffers + * to the user + * - Info print about send/received/handled packet number if + * INFO_405_ENET is set + * 17-Apr-01 stefan.roese@esd-electronics.com + * - MAL reset in "eth_halt" included + * - Enet speed and duplex output now in one line + * 08-May-01 stefan.roese@esd-electronics.com + * - MAL error handling added (eth_init called again) + * 13-Nov-01 stefan.roese@esd-electronics.com + * - Set IST bit in EMAC_M1 reg upon 100MBit or full duplex + * 04-Jan-02 stefan.roese@esd-electronics.com + * - Wait for PHY auto negotiation to complete added + * 06-Feb-02 stefan.roese@esd-electronics.com + * - Bug fixed in waiting for auto negotiation to complete + * 26-Feb-02 stefan.roese@esd-electronics.com + * - rx and tx buffer descriptors now allocated (no fixed address + * used anymore) + * 17-Jun-02 stefan.roese@esd-electronics.com + * - MAL error debug printf 'M' removed (rx de interrupt may + * occur upon many incoming packets with only 4 rx buffers). + *-----------------------------------------------------------------------------* + * 17-Nov-03 travis.sawyer@sandburst.com + * - ported from 405gp_enet.c to utilized upto 4 EMAC ports + * in the 440GX. This port should work with the 440GP + * (2 EMACs) also + *-----------------------------------------------------------------------------*/ + +#include <config.h> +#if defined(CONFIG_440) && defined(CONFIG_NET_MULTI) + +#include <common.h> +#include <net.h> +#include <asm/processor.h> +#include <ppc440.h> +#include <commproc.h> +#include <440gx_enet.h> +#include <405_mal.h> +#include <miiphy.h> +#include <malloc.h> +#include "vecnum.h" + + +#define EMAC_RESET_TIMEOUT 1000 /* 1000 ms reset timeout */ +#define PHY_AUTONEGOTIATE_TIMEOUT 4000 /* 4000 ms autonegotiate timeout */ + + +/* Ethernet Transmit and Receive Buffers */ +/* AS.HARNOIS + * In the same way ENET_MAX_MTU and ENET_MAX_MTU_ALIGNED are set from + * PKTSIZE and PKTSIZE_ALIGN (include/net.h) + */ +#define ENET_MAX_MTU PKTSIZE +#define ENET_MAX_MTU_ALIGNED PKTSIZE_ALIGN + + +/* define the number of channels implemented */ +#define EMAC_RXCHL EMAC_NUM_DEV +#define EMAC_TXCHL EMAC_NUM_DEV + +/*-----------------------------------------------------------------------------+ + * Defines for MAL/EMAC interrupt conditions as reported in the UIC (Universal + * Interrupt Controller). + *-----------------------------------------------------------------------------*/ +#define MAL_UIC_ERR ( UIC_MAL_SERR | UIC_MAL_TXDE | UIC_MAL_RXDE) +#define MAL_UIC_DEF (UIC_MAL_RXEOB | MAL_UIC_ERR) +#define EMAC_UIC_DEF UIC_ENET + +#undef INFO_440_ENET + +/*-----------------------------------------------------------------------------+ + * Global variables. TX and RX descriptors and buffers. + *-----------------------------------------------------------------------------*/ +/* IER globals */ +static uint32_t mal_ier; + +/*-----------------------------------------------------------------------------+ + * Prototypes and externals. + *-----------------------------------------------------------------------------*/ +static void enet_rcv (struct eth_device *dev, unsigned long malisr); + +int enetInt (struct eth_device *dev); +static void mal_err (struct eth_device *dev, unsigned long isr, + unsigned long uic, unsigned long maldef, + unsigned long mal_errr); +static void emac_err (struct eth_device *dev, unsigned long isr); + +/*-----------------------------------------------------------------------------+ +| ppc_440x_eth_halt +| Disable MAL channel, and EMACn +| +| ++-----------------------------------------------------------------------------*/ +static void ppc_440x_eth_halt (struct eth_device *dev) +{ + EMAC_440GX_HW_PST hw_p = dev->priv; + uint32_t failsafe = 10000; + + out32 (EMAC_IER + hw_p->hw_addr, 0x00000000); /* disable emac interrupts */ + + /* 1st reset MAL channel */ + /* Note: writing a 0 to a channel has no effect */ + mtdcr (maltxcarr, (MAL_CR_MMSR >> hw_p->devnum)); + mtdcr (malrxcarr, (MAL_CR_MMSR >> hw_p->devnum)); + + /* wait for reset */ + while (mfdcr (maltxcasr) & (MAL_CR_MMSR >> hw_p->devnum)) { + udelay (1000); /* Delay 1 MS so as not to hammer the register */ + failsafe--; + if (failsafe == 0) + break; + + } + + /* EMAC RESET */ + out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_SRST); + + hw_p->print_speed = 1; /* print speed message again next time */ + + return; +} + +extern int phy_setup_aneg (unsigned char addr); +extern int miiphy_reset (unsigned char addr); + +static int ppc_440x_eth_init (struct eth_device *dev, bd_t * bis) +{ + int i; + unsigned long reg; + unsigned long msr; + unsigned long speed; + unsigned long duplex; + unsigned long failsafe; + unsigned mode_reg; + unsigned short devnum; + unsigned short reg_short; + sys_info_t sysinfo; + + EMAC_440GX_HW_PST hw_p = dev->priv; + + /* before doing anything, figure out if we have a MAC address */ + /* if not, bail */ + if (memcmp (dev->enetaddr, "\0\0\0\0\0\0", 6) == 0) + return -1; + + /* Need to get the OPB frequency so we can access the PHY */ + get_sys_info (&sysinfo); + + + msr = mfmsr (); + mtmsr (msr & ~(MSR_EE)); /* disable interrupts */ + + devnum = hw_p->devnum; + +#ifdef INFO_440_ENET + /* AS.HARNOIS + * We should have : + * hw_p->stats.pkts_handled <= hw_p->stats.pkts_rx <= hw_p->stats.pkts_handled+PKTBUFSRX + * In the most cases hw_p->stats.pkts_handled = hw_p->stats.pkts_rx, but it + * is possible that new packets (without relationship with + * current transfer) have got the time to arrived before + * netloop calls eth_halt + */ + printf ("About preceeding transfer (eth%d):\n" + "- Sent packet number %d\n" + "- Received packet number %d\n" + "- Handled packet number %d\n", + hw_p->devnum, + hw_p->stats.pkts_tx, + hw_p->stats.pkts_rx, hw_p->stats.pkts_handled); + + hw_p->stats.pkts_tx = 0; + hw_p->stats.pkts_rx = 0; + hw_p->stats.pkts_handled = 0; +#endif + + /* MAL Channel RESET */ + /* 1st reset MAL channel */ + /* Note: writing a 0 to a channel has no effect */ + mtdcr (maltxcarr, (MAL_TXRX_CASR >> hw_p->devnum)); + mtdcr (malrxcarr, (MAL_TXRX_CASR >> hw_p->devnum)); + + /* wait for reset */ + /* TBS: should have udelay and failsafe here */ + failsafe = 10000; + /* wait for reset */ + while (mfdcr (maltxcasr) & (MAL_CR_MMSR >> hw_p->devnum)) { + udelay (1000); /* Delay 1 MS so as not to hammer the register */ + failsafe--; + if (failsafe == 0) + break; + + } + + hw_p->tx_err_index = 0; /* Transmit Error Index for tx_err_log */ + hw_p->rx_err_index = 0; /* Receive Error Index for rx_err_log */ + + hw_p->rx_slot = 0; /* MAL Receive Slot */ + hw_p->rx_i_index = 0; /* Receive Interrupt Queue Index */ + hw_p->rx_u_index = 0; /* Receive User Queue Index */ + + hw_p->tx_slot = 0; /* MAL Transmit Slot */ + hw_p->tx_i_index = 0; /* Transmit Interrupt Queue Index */ + hw_p->tx_u_index = 0; /* Transmit User Queue Index */ + + /* set RMII mode */ + /* NOTE: 440GX spec states that mode is mutually exclusive */ + /* NOTE: Therefore, disable all other EMACS, since we handle */ + /* NOTE: only one emac at a time */ + reg = 0; + out32 (ZMII_FER, 0); + udelay (100); + out32 (ZMII_FER, ZMII_FER_MDI << ZMII_FER_V (devnum)); + out32 (ZMII_SSR, 0x11110000); + /* reset emac so we have access to the phy */ + __asm__ volatile ("eieio"); + + out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_SRST); + __asm__ volatile ("eieio"); + + if ((devnum == 2) || (devnum == 3)) + out32 (RGMII_FER, ((RGMII_FER_RGMII << RGMII_FER_V (2)) | + (RGMII_FER_RGMII << RGMII_FER_V (3)))); + __asm__ volatile ("eieio"); + + failsafe = 1000; + while ((in32 (EMAC_M0 + hw_p->hw_addr) & (EMAC_M0_SRST)) && failsafe) { + udelay (1000); + failsafe--; + } + + /* Whack the M1 register */ + mode_reg = 0x0; + mode_reg &= ~0x00000038; + if (sysinfo.freqOPB <= 50000000); + else if (sysinfo.freqOPB <= 66666667) + mode_reg |= EMAC_M1_OBCI_66; + else if (sysinfo.freqOPB <= 83333333) + mode_reg |= EMAC_M1_OBCI_83; + else if (sysinfo.freqOPB <= 100000000) + mode_reg |= EMAC_M1_OBCI_100; + else + mode_reg |= EMAC_M1_OBCI_GT100; + + out32 (EMAC_M1 + hw_p->hw_addr, mode_reg); + + + /* wait for PHY to complete auto negotiation */ + reg_short = 0; +#ifndef CONFIG_CS8952_PHY + switch (devnum) { + case 0: + reg = CONFIG_PHY_ADDR; + break; + case 1: + reg = CONFIG_PHY1_ADDR; + break; +#if defined (CONFIG_440_GX) + case 2: + reg = CONFIG_PHY2_ADDR; + break; + case 3: + reg = CONFIG_PHY3_ADDR; + break; +#endif + default: + reg = CONFIG_PHY_ADDR; + break; + } + + /* Reset the phy */ + miiphy_reset (reg); + + /* Start/Restart autonegotiation */ +/* miiphy_write(reg, PHY_BMCR, 0x9340); */ + phy_setup_aneg (reg); + udelay (1000); + + miiphy_read (reg, PHY_BMSR, ®_short); + + /* + * Wait if PHY is able of autonegotiation and autonegotiation is not complete + */ + if ((reg_short & PHY_BMSR_AUTN_ABLE) + && !(reg_short & PHY_BMSR_AUTN_COMP)) { + puts ("Waiting for PHY auto negotiation to complete"); + i = 0; + while (!(reg_short & PHY_BMSR_AUTN_COMP)) { + /* + * Timeout reached ? + */ + if (i > PHY_AUTONEGOTIATE_TIMEOUT) { + puts (" TIMEOUT !\n"); + break; + } + + if ((i++ % 1000) == 0) { + putc ('.'); + } + udelay (1000); /* 1 ms */ + miiphy_read (reg, PHY_BMSR, ®_short); + + } + puts (" done\n"); + udelay (500000); /* another 500 ms (results in faster booting) */ + } +#endif + speed = miiphy_speed (reg); + duplex = miiphy_duplex (reg); + + if (hw_p->print_speed) { + hw_p->print_speed = 0; + printf ("ENET Speed is %d Mbps - %s duplex connection\n", + (int) speed, (duplex == HALF) ? "HALF" : "FULL"); + } + + /* Set ZMII/RGMII speed according to the phy link speed */ + reg = in32 (ZMII_SSR); + if (speed == 100) + out32 (ZMII_SSR, reg | (ZMII_SSR_SP << ZMII_SSR_V (devnum))); + else + out32 (ZMII_SSR, + reg & (~(ZMII_SSR_SP << ZMII_SSR_V (devnum)))); + + if ((devnum == 2) || (devnum == 3)) { + if (speed == 1000) + reg = (RGMII_SSR_SP_1000MBPS << RGMII_SSR_V (devnum)); + else if (speed == 100) + reg = (RGMII_SSR_SP_100MBPS << RGMII_SSR_V (devnum)); + else + reg = (RGMII_SSR_SP_10MBPS << RGMII_SSR_V (devnum)); + + out32 (RGMII_SSR, reg); + } + + /* set the Mal configuration reg */ + /* Errata 1.12: MAL_1 -- Disable MAL bursting */ + if (get_pvr () == PVR_440GP_RB) + mtdcr (malmcr, + MAL_CR_OPBBL | MAL_CR_LEA | MAL_CR_PLBLT_DEFAULT); + else + mtdcr (malmcr, + MAL_CR_PLBB | MAL_CR_OPBBL | MAL_CR_LEA | + MAL_CR_PLBLT_DEFAULT | MAL_CR_EOPIE | 0x00330000); + + /* Free "old" buffers */ + if (hw_p->alloc_tx_buf) + free (hw_p->alloc_tx_buf); + if (hw_p->alloc_rx_buf) + free (hw_p->alloc_rx_buf); + + /* + * Malloc MAL buffer desciptors, make sure they are + * aligned on cache line boundary size + * (401/403/IOP480 = 16, 405 = 32) + * and doesn't cross cache block boundaries. + */ + hw_p->alloc_tx_buf = + (mal_desc_t *) malloc ((sizeof (mal_desc_t) * NUM_TX_BUFF) + + ((2 * CFG_CACHELINE_SIZE) - 2)); + if (((int) hw_p->alloc_tx_buf & CACHELINE_MASK) != 0) { + hw_p->tx = + (mal_desc_t *) ((int) hw_p->alloc_tx_buf + + CFG_CACHELINE_SIZE - + ((int) hw_p-> + alloc_tx_buf & CACHELINE_MASK)); + } else { + hw_p->tx = hw_p->alloc_tx_buf; + } + + hw_p->alloc_rx_buf = + (mal_desc_t *) malloc ((sizeof (mal_desc_t) * NUM_RX_BUFF) + + ((2 * CFG_CACHELINE_SIZE) - 2)); + if (((int) hw_p->alloc_rx_buf & CACHELINE_MASK) != 0) { + hw_p->rx = + (mal_desc_t *) ((int) hw_p->alloc_rx_buf + + CFG_CACHELINE_SIZE - + ((int) hw_p-> + alloc_rx_buf & CACHELINE_MASK)); + } else { + hw_p->rx = hw_p->alloc_rx_buf; + } + + for (i = 0; i < NUM_TX_BUFF; i++) { + hw_p->tx[i].ctrl = 0; + hw_p->tx[i].data_len = 0; + if (hw_p->first_init == 0) + hw_p->txbuf_ptr = + (char *) malloc (ENET_MAX_MTU_ALIGNED); + hw_p->tx[i].data_ptr = hw_p->txbuf_ptr; + if ((NUM_TX_BUFF - 1) == i) + hw_p->tx[i].ctrl |= MAL_TX_CTRL_WRAP; + hw_p->tx_run[i] = -1; +#if 0 + printf ("TX_BUFF %d @ 0x%08lx\n", i, + (ulong) hw_p->tx[i].data_ptr); +#endif + } + + for (i = 0; i < NUM_RX_BUFF; i++) { + hw_p->rx[i].ctrl = 0; + hw_p->rx[i].data_len = 0; + /* rx[i].data_ptr = (char *) &rx_buff[i]; */ + hw_p->rx[i].data_ptr = (char *) NetRxPackets[i]; + if ((NUM_RX_BUFF - 1) == i) + hw_p->rx[i].ctrl |= MAL_RX_CTRL_WRAP; + hw_p->rx[i].ctrl |= MAL_RX_CTRL_EMPTY | MAL_RX_CTRL_INTR; + hw_p->rx_ready[i] = -1; +#if 0 + printf ("RX_BUFF %d @ 0x%08lx\n", i, (ulong) rx[i].data_ptr); +#endif + } + + reg = 0x00000000; + + reg |= dev->enetaddr[0]; /* set high address */ + reg = reg << 8; + reg |= dev->enetaddr[1]; + + out32 (EMAC_IAH + hw_p->hw_addr, reg); + + reg = 0x00000000; + reg |= dev->enetaddr[2]; /* set low address */ + reg = reg << 8; + reg |= dev->enetaddr[3]; + reg = reg << 8; + reg |= dev->enetaddr[4]; + reg = reg << 8; + reg |= dev->enetaddr[5]; + + out32 (EMAC_IAL + hw_p->hw_addr, reg); + + switch (devnum) { + case 1: + /* setup MAL tx & rx channel pointers */ + mtdcr (maltxbattr, 0x0); + mtdcr (maltxctp1r, hw_p->tx); + mtdcr (malrxbattr, 0x0); + mtdcr (malrxctp1r, hw_p->rx); + /* set RX buffer size */ + mtdcr (malrcbs1, ENET_MAX_MTU_ALIGNED / 16); + break; +#if defined (CONFIG_440_GX) + case 2: + /* setup MAL tx & rx channel pointers */ + mtdcr (maltxbattr, 0x0); + mtdcr (maltxctp2r, hw_p->tx); + mtdcr (malrxbattr, 0x0); + mtdcr (malrxctp2r, hw_p->rx); + /* set RX buffer size */ + mtdcr (malrcbs2, ENET_MAX_MTU_ALIGNED / 16); + break; + case 3: + /* setup MAL tx & rx channel pointers */ + mtdcr (maltxbattr, 0x0); + mtdcr (maltxctp3r, hw_p->tx); + mtdcr (malrxbattr, 0x0); + mtdcr (malrxctp3r, hw_p->rx); + /* set RX buffer size */ + mtdcr (malrcbs3, ENET_MAX_MTU_ALIGNED / 16); + break; +#endif /*CONFIG_440_GX */ + case 0: + default: + /* setup MAL tx & rx channel pointers */ + mtdcr (maltxbattr, 0x0); + mtdcr (maltxctp0r, hw_p->tx); + mtdcr (malrxbattr, 0x0); + mtdcr (malrxctp0r, hw_p->rx); + /* set RX buffer size */ + mtdcr (malrcbs0, ENET_MAX_MTU_ALIGNED / 16); + break; + } + + /* Enable MAL transmit and receive channels */ + mtdcr (maltxcasr, (MAL_TXRX_CASR >> hw_p->devnum)); + mtdcr (malrxcasr, (MAL_TXRX_CASR >> hw_p->devnum)); + + /* set transmit enable & receive enable */ + out32 (EMAC_M0 + hw_p->hw_addr, EMAC_M0_TXE | EMAC_M0_RXE); + + /* set receive fifo to 4k and tx fifo to 2k */ + mode_reg = in32 (EMAC_M1 + hw_p->hw_addr); + mode_reg |= EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K; + + /* set speed */ + /* TBS: do 1GbE */ + if (speed == _100BASET) + mode_reg = mode_reg | EMAC_M1_MF_100MBPS | EMAC_M1_IST; + else + mode_reg = mode_reg & ~0x00C00000; /* 10 MBPS */ + if (duplex == FULL) + mode_reg = mode_reg | 0x80000000 | EMAC_M1_IST; + + out32 (EMAC_M1 + hw_p->hw_addr, mode_reg); + + /* Enable broadcast and indvidual address */ + /* TBS: enabling runts as some misbehaved nics will send runts */ + out32 (EMAC_RXM + hw_p->hw_addr, EMAC_RMR_BAE | EMAC_RMR_IAE); + + /* we probably need to set the tx mode1 reg? maybe at tx time */ + + /* set transmit request threshold register */ + out32 (EMAC_TRTR + hw_p->hw_addr, 0x18000000); /* 256 byte threshold */ + + /* set receive low/high water mark register */ + /* 440GP has a 64 byte burst length */ + out32 (EMAC_RX_HI_LO_WMARK + hw_p->hw_addr, 0x80009000); + out32 (EMAC_TXM1 + hw_p->hw_addr, 0xf8640000); + + /* Set fifo limit entry in tx mode 0 */ + out32 (EMAC_TXM0 + hw_p->hw_addr, 0x00000003); + /* Frame gap set */ + out32 (EMAC_I_FRAME_GAP_REG + hw_p->hw_addr, 0x00000008); + + /* Set EMAC IER */ + hw_p->emac_ier = EMAC_ISR_PTLE | EMAC_ISR_BFCS | + EMAC_ISR_PTLE | EMAC_ISR_ORE | EMAC_ISR_IRE; + if (speed == _100BASET) + hw_p->emac_ier = hw_p->emac_ier | EMAC_ISR_SYE; + + out32 (EMAC_ISR + hw_p->hw_addr, 0xffffffff); /* clear pending interrupts */ + out32 (EMAC_IER + hw_p->hw_addr, hw_p->emac_ier); + + if (hw_p->first_init == 0) { + /* + * Connect interrupt service routines + */ + irq_install_handler (VECNUM_EWU0 + (hw_p->devnum * 2), + (interrupt_handler_t *) enetInt, dev); + irq_install_handler (VECNUM_ETH0 + (hw_p->devnum * 2), + (interrupt_handler_t *) enetInt, dev); + } +#if 0 /* done by irq_install_handler */ + /* set up interrupt handler */ + /* setup interrupt controller to take interrupts from the MAL & + EMAC */ + mtdcr (uicsr, 0xffffffff); /* clear pending interrupts */ + mtdcr (uicer, mfdcr (uicer) | MAL_UIC_DEF | EMAC_UIC_DEF); +#endif + + mtmsr (msr); /* enable interrupts again */ + + hw_p->bis = bis; + hw_p->first_init = 1; + + return (1); +} + + +static int ppc_440x_eth_send (struct eth_device *dev, volatile void *ptr, + int len) +{ + struct enet_frame *ef_ptr; + ulong time_start, time_now; + unsigned long temp_txm0; + EMAC_440GX_HW_PST hw_p = dev->priv; + + ef_ptr = (struct enet_frame *) ptr; + + /*-----------------------------------------------------------------------+ + * Copy in our address into the frame. + *-----------------------------------------------------------------------*/ + (void) memcpy (ef_ptr->source_addr, dev->enetaddr, ENET_ADDR_LENGTH); + + /*-----------------------------------------------------------------------+ + * If frame is too long or too short, modify length. + *-----------------------------------------------------------------------*/ + /* TBS: where does the fragment go???? */ + if (len > ENET_MAX_MTU) + len = ENET_MAX_MTU; + + /* memcpy ((void *) &tx_buff[tx_slot], (const void *) ptr, len); */ + memcpy ((void *) hw_p->txbuf_ptr, (const void *) ptr, len); + + /*-----------------------------------------------------------------------+ + * set TX Buffer busy, and send it + *-----------------------------------------------------------------------*/ + hw_p->tx[hw_p->tx_slot].ctrl = (MAL_TX_CTRL_LAST | + EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP) & + ~(EMAC_TX_CTRL_ISA | EMAC_TX_CTRL_RSA); + if ((NUM_TX_BUFF - 1) == hw_p->tx_slot) + hw_p->tx[hw_p->tx_slot].ctrl |= MAL_TX_CTRL_WRAP; + + hw_p->tx[hw_p->tx_slot].data_len = (short) len; + hw_p->tx[hw_p->tx_slot].ctrl |= MAL_TX_CTRL_READY; + + __asm__ volatile ("eieio"); + + out32 (EMAC_TXM0 + hw_p->hw_addr, + in32 (EMAC_TXM0 + hw_p->hw_addr) | EMAC_TXM0_GNP0); +#ifdef INFO_440_ENET + hw_p->stats.pkts_tx++; +#endif + + /*-----------------------------------------------------------------------+ + * poll unitl the packet is sent and then make sure it is OK + *-----------------------------------------------------------------------*/ + time_start = get_timer (0); + while (1) { + temp_txm0 = in32 (EMAC_TXM0 + hw_p->hw_addr); + /* loop until either TINT turns on or 3 seconds elapse */ + if ((temp_txm0 & EMAC_TXM0_GNP0) != 0) { + /* transmit is done, so now check for errors + * If there is an error, an interrupt should + * happen when we return + */ + time_now = get_timer (0); + if ((time_now - time_start) > 3000) { + return (-1); + } + } else { + return (len); + } + } +} + + +int enetInt (struct eth_device *dev) +{ + int serviced; + int rc = -1; /* default to not us */ + unsigned long mal_isr; + unsigned long emac_isr = 0; + unsigned long mal_rx_eob; + unsigned long my_uic0msr, my_uic1msr; + +#if defined(CONFIG_440_GX) + unsigned long my_uic2msr; +#endif + EMAC_440GX_HW_PST hw_p; + + /* + * Because the mal is generic, we need to get the current + * eth device + */ + dev = eth_get_dev (); + + hw_p = dev->priv; + + + /* enter loop that stays in interrupt code until nothing to service */ + do { + serviced = 0; + + my_uic0msr = mfdcr (uic0msr); + my_uic1msr = mfdcr (uic1msr); +#if defined(CONFIG_440_GX) + my_uic2msr = mfdcr (uic2msr); +#endif + if (!(my_uic0msr & (UIC_MRE | UIC_MTE)) + && !(my_uic1msr & + (UIC_ETH0 | UIC_ETH1 | UIC_MS | UIC_MTDE | + UIC_MRDE))) { + /* not for us */ + return (rc); + } +#if defined (CONFIG_440_GX) + if (!(my_uic0msr & (UIC_MRE | UIC_MTE)) + && !(my_uic2msr & (UIC_ETH2 | UIC_ETH3))) { + /* not for us */ + return (rc); + } +#endif + /* get and clear controller status interrupts */ + /* look at Mal and EMAC interrupts */ + if ((my_uic0msr & (UIC_MRE | UIC_MTE)) + || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) { + /* we have a MAL interrupt */ + mal_isr = mfdcr (malesr); + /* look for mal error */ + if (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE)) { + mal_err (dev, mal_isr, my_uic0msr, + MAL_UIC_DEF, MAL_UIC_ERR); + serviced = 1; + rc = 0; + } + } + + /* port by port dispatch of emac interrupts */ + if (hw_p->devnum == 0) { + if (UIC_ETH0 & my_uic1msr) { /* look for EMAC errors */ + emac_isr = in32 (EMAC_ISR + hw_p->hw_addr); + if ((hw_p->emac_ier & emac_isr) != 0) { + emac_err (dev, emac_isr); + serviced = 1; + rc = 0; + } + } + if ((hw_p->emac_ier & emac_isr) + || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) { + mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */ + mtdcr (uic1sr, UIC_ETH0 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */ + return (rc); /* we had errors so get out */ + } + } + + if (hw_p->devnum == 1) { + if (UIC_ETH1 & my_uic1msr) { /* look for EMAC errors */ + emac_isr = in32 (EMAC_ISR + hw_p->hw_addr); + if ((hw_p->emac_ier & emac_isr) != 0) { + emac_err (dev, emac_isr); + serviced = 1; + rc = 0; + } + } + if ((hw_p->emac_ier & emac_isr) + || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) { + mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */ + mtdcr (uic1sr, UIC_ETH1 | UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */ + return (rc); /* we had errors so get out */ + } + } +#if defined (CONFIG_440_GX) + if (hw_p->devnum == 2) { + if (UIC_ETH2 & my_uic2msr) { /* look for EMAC errors */ + emac_isr = in32 (EMAC_ISR + hw_p->hw_addr); + if ((hw_p->emac_ier & emac_isr) != 0) { + emac_err (dev, emac_isr); + serviced = 1; + rc = 0; + } + } + if ((hw_p->emac_ier & emac_isr) + || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) { + mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */ + mtdcr (uic1sr, UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */ + mtdcr (uic2sr, UIC_ETH2); + return (rc); /* we had errors so get out */ + } + } + + if (hw_p->devnum == 3) { + if (UIC_ETH3 & my_uic2msr) { /* look for EMAC errors */ + emac_isr = in32 (EMAC_ISR + hw_p->hw_addr); + if ((hw_p->emac_ier & emac_isr) != 0) { + emac_err (dev, emac_isr); + serviced = 1; + rc = 0; + } + } + if ((hw_p->emac_ier & emac_isr) + || (my_uic1msr & (UIC_MS | UIC_MTDE | UIC_MRDE))) { + mtdcr (uic0sr, UIC_MRE | UIC_MTE); /* Clear */ + mtdcr (uic1sr, UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */ + mtdcr (uic2sr, UIC_ETH3); + return (rc); /* we had errors so get out */ + } + } +#endif /* CONFIG_440_GX */ + /* handle MAX TX EOB interrupt from a tx */ + if (my_uic0msr & UIC_MTE) { + mal_rx_eob = mfdcr (maltxeobisr); + mtdcr (maltxeobisr, mal_rx_eob); + mtdcr (uic0sr, UIC_MTE); + } + /* handle MAL RX EOB interupt from a receive */ + /* check for EOB on valid channels */ + if (my_uic0msr & UIC_MRE) { + mal_rx_eob = mfdcr (malrxeobisr); + if ((mal_rx_eob & (0x80000000 >> hw_p->devnum)) != 0) { /* call emac routine for channel x */ + /* clear EOB + mtdcr(malrxeobisr, mal_rx_eob); */ + enet_rcv (dev, emac_isr); + /* indicate that we serviced an interrupt */ + serviced = 1; + rc = 0; + } + } + mtdcr (uic0sr, UIC_MRE); /* Clear */ + mtdcr (uic1sr, UIC_MS | UIC_MTDE | UIC_MRDE); /* Clear */ + switch (hw_p->devnum) { + case 0: + mtdcr (uic1sr, UIC_ETH0); + break; + case 1: + mtdcr (uic1sr, UIC_ETH1); + break; +#if defined (CONFIG_440_GX) + case 2: + mtdcr (uic2sr, UIC_ETH2); + break; + case 3: + mtdcr (uic2sr, UIC_ETH3); + break; +#endif /* CONFIG_440_GX */ + default: + break; + } + } while (serviced); + + return (rc); +} + +/*-----------------------------------------------------------------------------+ + * MAL Error Routine + *-----------------------------------------------------------------------------*/ +static void mal_err (struct eth_device *dev, unsigned long isr, + unsigned long uic, unsigned long maldef, + unsigned long mal_errr) +{ + EMAC_440GX_HW_PST hw_p = dev->priv; + + mtdcr (malesr, isr); /* clear interrupt */ + + /* clear DE interrupt */ + mtdcr (maltxdeir, 0xC0000000); + mtdcr (malrxdeir, 0x80000000); + +#ifdef INFO_440_ENET + printf ("\nMAL error occured.... ISR = %lx UIC = = %lx MAL_DEF = %lx MAL_ERR= %lx \n", isr, uic, maldef, mal_errr); +#endif + + eth_init (hw_p->bis); /* start again... */ +} + +/*-----------------------------------------------------------------------------+ + * EMAC Error Routine + *-----------------------------------------------------------------------------*/ +static void emac_err (struct eth_device *dev, unsigned long isr) +{ + EMAC_440GX_HW_PST hw_p = dev->priv; + + printf ("EMAC%d error occured.... ISR = %lx\n", hw_p->devnum, isr); + out32 (EMAC_ISR + hw_p->hw_addr, isr); +} + +/*-----------------------------------------------------------------------------+ + * enet_rcv() handles the ethernet receive data + *-----------------------------------------------------------------------------*/ +static void enet_rcv (struct eth_device *dev, unsigned long malisr) +{ + struct enet_frame *ef_ptr; + unsigned long data_len; + unsigned long rx_eob_isr; + EMAC_440GX_HW_PST hw_p = dev->priv; + + int handled = 0; + int i; + int loop_count = 0; + + rx_eob_isr = mfdcr (malrxeobisr); + if ((0x80000000 >> hw_p->devnum) & rx_eob_isr) { + /* clear EOB */ + mtdcr (malrxeobisr, rx_eob_isr); + + /* EMAC RX done */ + while (1) { /* do all */ + i = hw_p->rx_slot; + + if ((MAL_RX_CTRL_EMPTY & hw_p->rx[i].ctrl) + || (loop_count >= NUM_RX_BUFF)) + break; + loop_count++; + hw_p->rx_slot++; + if (NUM_RX_BUFF == hw_p->rx_slot) + hw_p->rx_slot = 0; + handled++; + data_len = (unsigned long) hw_p->rx[i].data_len; /* Get len */ + if (data_len) { + if (data_len > ENET_MAX_MTU) /* Check len */ + data_len = 0; + else { + if (EMAC_RX_ERRORS & hw_p->rx[i].ctrl) { /* Check Errors */ + data_len = 0; + hw_p->stats.rx_err_log[hw_p-> + rx_err_index] + = hw_p->rx[i].ctrl; + hw_p->rx_err_index++; + if (hw_p->rx_err_index == + MAX_ERR_LOG) + hw_p->rx_err_index = + 0; + } /* emac_erros */ + } /* data_len < max mtu */ + } /* if data_len */ + if (!data_len) { /* no data */ + hw_p->rx[i].ctrl |= MAL_RX_CTRL_EMPTY; /* Free Recv Buffer */ + + hw_p->stats.data_len_err++; /* Error at Rx */ + } + + /* !data_len */ + /* AS.HARNOIS */ + /* Check if user has already eaten buffer */ + /* if not => ERROR */ + else if (hw_p->rx_ready[hw_p->rx_i_index] != -1) { + if (hw_p->is_receiving) + printf ("ERROR : Receive buffers are full!\n"); + break; + } else { + hw_p->stats.rx_frames++; + hw_p->stats.rx += data_len; + ef_ptr = (struct enet_frame *) hw_p->rx[i]. + data_ptr; +#ifdef INFO_440_ENET + hw_p->stats.pkts_rx++; +#endif + /* AS.HARNOIS + * use ring buffer + */ + hw_p->rx_ready[hw_p->rx_i_index] = i; + hw_p->rx_i_index++; + if (NUM_RX_BUFF == hw_p->rx_i_index) + hw_p->rx_i_index = 0; + + /* printf("X"); /|* test-only *|/ */ + + /* AS.HARNOIS + * free receive buffer only when + * buffer has been handled (eth_rx) + rx[i].ctrl |= MAL_RX_CTRL_EMPTY; + */ + } /* if data_len */ + } /* while */ + } /* if EMACK_RXCHL */ +} + + +static int ppc_440x_eth_rx (struct eth_device *dev) +{ + int length; + int user_index; + unsigned long msr; + EMAC_440GX_HW_PST hw_p = dev->priv; + + hw_p->is_receiving = 1; /* tell driver */ + + for (;;) { + /* AS.HARNOIS + * use ring buffer and + * get index from rx buffer desciptor queue + */ + user_index = hw_p->rx_ready[hw_p->rx_u_index]; + if (user_index == -1) { + length = -1; + break; /* nothing received - leave for() loop */ + } + + msr = mfmsr (); + mtmsr (msr & ~(MSR_EE)); + + length = hw_p->rx[user_index].data_len; + + /* Pass the packet up to the protocol layers. */ + /* NetReceive(NetRxPackets[rxIdx], length - 4); */ + /* NetReceive(NetRxPackets[i], length); */ + NetReceive (NetRxPackets[user_index], length - 4); + /* Free Recv Buffer */ + hw_p->rx[user_index].ctrl |= MAL_RX_CTRL_EMPTY; + /* Free rx buffer descriptor queue */ + hw_p->rx_ready[hw_p->rx_u_index] = -1; + hw_p->rx_u_index++; + if (NUM_RX_BUFF == hw_p->rx_u_index) + hw_p->rx_u_index = 0; + +#ifdef INFO_440_ENET + hw_p->stats.pkts_handled++; +#endif + + mtmsr (msr); /* Enable IRQ's */ + } + + hw_p->is_receiving = 0; /* tell driver */ + + return length; +} + +int ppc_440x_eth_initialize (bd_t * bis) +{ + static int virgin = 0; + unsigned long pfc1; + struct eth_device *dev; + int eth_num = 0; + + EMAC_440GX_HW_PST hw = NULL; + + mfsdr (sdr_pfc1, pfc1); + pfc1 &= ~(0x01e00000); + pfc1 |= 0x01200000; + mtsdr (sdr_pfc1, pfc1); + + for (eth_num = 0; eth_num < EMAC_NUM_DEV; eth_num++) { + + /* See if we can actually bring up the interface, otherwise, skip it */ + switch (eth_num) { + case 0: + if (memcmp (bis->bi_enetaddr, "\0\0\0\0\0\0", 6) == 0) + continue; + break; + case 1: + if (memcmp (bis->bi_enet1addr, "\0\0\0\0\0\0", 6) == + 0) + continue; + break; + case 2: + if (memcmp (bis->bi_enet2addr, "\0\0\0\0\0\0", 6) == + 0) + continue; + break; + case 3: + if (memcmp (bis->bi_enet3addr, "\0\0\0\0\0\0", 6) == + 0) + continue; + break; + default: + if (memcmp (bis->bi_enetaddr, "\0\0\0\0\0\0", 6) == 0) + continue; + break; + } + + /* Allocate device structure */ + dev = (struct eth_device *) malloc (sizeof (*dev)); + if (dev == NULL) { + printf (__FUNCTION__ + ": Cannot allocate eth_device %d\n", eth_num); + return (-1); + } + + /* Allocate our private use data */ + hw = (EMAC_440GX_HW_PST) malloc (sizeof (*hw)); + if (hw == NULL) { + printf (__FUNCTION__ + ": Cannot allocate private hw data for eth_device %d", + eth_num); + free (dev); + return (-1); + } + + switch (eth_num) { + case 0: + hw->hw_addr = 0; + memcpy (dev->enetaddr, bis->bi_enetaddr, 6); + break; + case 1: + hw->hw_addr = 0x100; + memcpy (dev->enetaddr, bis->bi_enet1addr, 6); + break; + case 2: + hw->hw_addr = 0x400; + memcpy (dev->enetaddr, bis->bi_enet2addr, 6); + break; + case 3: + hw->hw_addr = 0x600; + memcpy (dev->enetaddr, bis->bi_enet3addr, 6); + break; + default: + hw->hw_addr = 0; + memcpy (dev->enetaddr, bis->bi_enetaddr, 6); + break; + } + + hw->devnum = eth_num; + + sprintf (dev->name, "ppc_440x_eth%d", eth_num); + dev->priv = (void *) hw; + dev->init = ppc_440x_eth_init; + dev->halt = ppc_440x_eth_halt; + dev->send = ppc_440x_eth_send; + dev->recv = ppc_440x_eth_rx; + + if (0 == virgin) { + /* set the MAL IER ??? names may change with new spec ??? */ + mal_ier = + MAL_IER_DE | MAL_IER_NE | MAL_IER_TE | + MAL_IER_OPBE | MAL_IER_PLBE; + mtdcr (malesr, 0xffffffff); /* clear pending interrupts */ + mtdcr (maltxdeir, 0xffffffff); /* clear pending interrupts */ + mtdcr (malrxdeir, 0xffffffff); /* clear pending interrupts */ + mtdcr (malier, mal_ier); + + /* install MAL interrupt handler */ + irq_install_handler (VECNUM_MS, + (interrupt_handler_t *) enetInt, + dev); + irq_install_handler (VECNUM_MTE, + (interrupt_handler_t *) enetInt, + dev); + irq_install_handler (VECNUM_MRE, + (interrupt_handler_t *) enetInt, + dev); + irq_install_handler (VECNUM_TXDE, + (interrupt_handler_t *) enetInt, + dev); + irq_install_handler (VECNUM_RXDE, + (interrupt_handler_t *) enetInt, + dev); + virgin = 1; + } + + eth_register (dev); + + } /* end for each supported device */ + return (1); +} +#endif /* CONFIG_440 && CONFIG_NET_MULTI */ |