/* * (C) Copyright 2003 * Ingo Assmus <ingo.assmus@keymile.com> * * based on - Driver for MV64460X ethernet ports * Copyright (C) 2002 rabeeh@galileo.co.il * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ /* * mv_eth.c - header file for the polled mode GT ethernet driver */ #include <common.h> #include <net.h> #include <malloc.h> #include "mv_eth.h" /* enable Debug outputs */ #undef DEBUG_MV_ETH #ifdef DEBUG_MV_ETH #define DEBUG #define DP(x) x #else #define DP(x) #endif #undef MV64460_CHECKSUM_OFFLOAD /************************************************************************* ************************************************************************** ************************************************************************** * The first part is the high level driver of the gigE ethernet ports. * ************************************************************************** ************************************************************************** *************************************************************************/ /* Definition for configuring driver */ /* #define UPDATE_STATS_BY_SOFTWARE */ #undef MV64460_RX_QUEUE_FILL_ON_TASK /* Constants */ #define MAGIC_ETH_RUNNING 8031971 #define MV64460_INTERNAL_SRAM_SIZE _256K #define EXTRA_BYTES 32 #define WRAP ETH_HLEN + 2 + 4 + 16 #define BUFFER_MTU dev->mtu + WRAP #define INT_CAUSE_UNMASK_ALL 0x0007ffff #define INT_CAUSE_UNMASK_ALL_EXT 0x0011ffff #ifdef MV64460_RX_FILL_ON_TASK #define INT_CAUSE_MASK_ALL 0x00000000 #define INT_CAUSE_CHECK_BITS INT_CAUSE_UNMASK_ALL #define INT_CAUSE_CHECK_BITS_EXT INT_CAUSE_UNMASK_ALL_EXT #endif /* Read/Write to/from MV64460 internal registers */ #define MV_REG_READ(offset) my_le32_to_cpu(* (volatile unsigned int *) (INTERNAL_REG_BASE_ADDR + offset)) #define MV_REG_WRITE(offset,data) *(volatile unsigned int *) (INTERNAL_REG_BASE_ADDR + offset) = my_cpu_to_le32 (data) #define MV_SET_REG_BITS(regOffset,bits) ((*((volatile unsigned int*)((INTERNAL_REG_BASE_ADDR) + (regOffset)))) |= ((unsigned int)my_cpu_to_le32(bits))) #define MV_RESET_REG_BITS(regOffset,bits) ((*((volatile unsigned int*)((INTERNAL_REG_BASE_ADDR) + (regOffset)))) &= ~((unsigned int)my_cpu_to_le32(bits))) /* Static function declarations */ static int mv64460_eth_real_open (struct eth_device *eth); static int mv64460_eth_real_stop (struct eth_device *eth); static struct net_device_stats *mv64460_eth_get_stats (struct eth_device *dev); static void eth_port_init_mac_tables (ETH_PORT eth_port_num); static void mv64460_eth_update_stat (struct eth_device *dev); bool db64460_eth_start (struct eth_device *eth); unsigned int eth_read_mib_counter (ETH_PORT eth_port_num, unsigned int mib_offset); int mv64460_eth_receive (struct eth_device *dev); int mv64460_eth_xmit (struct eth_device *, volatile void *packet, int length); #ifndef UPDATE_STATS_BY_SOFTWARE static void mv64460_eth_print_stat (struct eth_device *dev); #endif /* Processes a received packet */ extern void NetReceive (volatile uchar *, int); extern unsigned int INTERNAL_REG_BASE_ADDR; /************************************************* *Helper functions - used inside the driver only * *************************************************/ #ifdef DEBUG_MV_ETH void print_globals (struct eth_device *dev) { printf ("Ethernet PRINT_Globals-Debug function\n"); printf ("Base Address for ETH_PORT_INFO: %08x\n", (unsigned int) dev->priv); printf ("Base Address for mv64460_eth_priv: %08x\n", (unsigned int) &(((ETH_PORT_INFO *) dev->priv)-> port_private)); printf ("GT Internal Base Address: %08x\n", INTERNAL_REG_BASE_ADDR); printf ("Base Address for TX-DESCs: %08x Number of allocated Buffers %d\n", (unsigned int) ((ETH_PORT_INFO *) dev->priv)->p_tx_desc_area_base[0], MV64460_TX_QUEUE_SIZE); printf ("Base Address for RX-DESCs: %08x Number of allocated Buffers %d\n", (unsigned int) ((ETH_PORT_INFO *) dev->priv)->p_rx_desc_area_base[0], MV64460_RX_QUEUE_SIZE); printf ("Base Address for RX-Buffer: %08x allocated Bytes %d\n", (unsigned int) ((ETH_PORT_INFO *) dev->priv)-> p_rx_buffer_base[0], (MV64460_RX_QUEUE_SIZE * MV64460_RX_BUFFER_SIZE) + 32); printf ("Base Address for TX-Buffer: %08x allocated Bytes %d\n", (unsigned int) ((ETH_PORT_INFO *) dev->priv)-> p_tx_buffer_base[0], (MV64460_TX_QUEUE_SIZE * MV64460_TX_BUFFER_SIZE) + 32); } #endif #define my_cpu_to_le32(x) my_le32_to_cpu((x)) unsigned long my_le32_to_cpu (unsigned long x) { return (((x & 0x000000ffU) << 24) | ((x & 0x0000ff00U) << 8) | ((x & 0x00ff0000U) >> 8) | ((x & 0xff000000U) >> 24)); } /********************************************************************** * mv64460_eth_print_phy_status * * Prints gigabit ethenret phy status * * Input : pointer to ethernet interface network device structure * Output : N/A **********************************************************************/ static void mv64460_eth_print_phy_status (struct eth_device *dev) { struct mv64460_eth_priv *port_private; unsigned int port_num; ETH_PORT_INFO *ethernet_private = (ETH_PORT_INFO *) dev->priv; unsigned int port_status, phy_reg_data; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; /* Check Link status on phy */ eth_port_read_smi_reg (port_num, 1, &phy_reg_data); if (!(phy_reg_data & 0x20)) { printf ("Ethernet port changed link status to DOWN\n"); } else { port_status = MV_REG_READ (MV64460_ETH_PORT_STATUS_REG (port_num)); printf ("Ethernet status port %d: Link up", port_num); printf (", %s", (port_status & BIT2) ? "Full Duplex" : "Half Duplex"); if (port_status & BIT4) printf (", Speed 1 Gbps"); else printf (", %s", (port_status & BIT5) ? "Speed 100 Mbps" : "Speed 10 Mbps"); printf ("\n"); } } /********************************************************************** * u-boot entry functions for mv64460_eth * **********************************************************************/ int db64460_eth_probe (struct eth_device *dev) { return ((int) db64460_eth_start (dev)); } int db64460_eth_poll (struct eth_device *dev) { return mv64460_eth_receive (dev); } int db64460_eth_transmit (struct eth_device *dev, volatile void *packet, int length) { mv64460_eth_xmit (dev, packet, length); return 0; } void db64460_eth_disable (struct eth_device *dev) { mv64460_eth_stop (dev); } void mv6446x_eth_initialize (bd_t * bis) { struct eth_device *dev; ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; int devnum, x, temp; char *s, *e, buf[64]; for (devnum = 0; devnum < MV_ETH_DEVS; devnum++) { dev = calloc (sizeof (*dev), 1); if (!dev) { printf ("%s: mv_enet%d allocation failure, %s\n", __FUNCTION__, devnum, "eth_device structure"); return; } /* must be less than NAMESIZE (16) */ sprintf (dev->name, "mv_enet%d", devnum); #ifdef DEBUG printf ("Initializing %s\n", dev->name); #endif /* Extract the MAC address from the environment */ switch (devnum) { case 0: s = "ethaddr"; break; case 1: s = "eth1addr"; break; case 2: s = "eth2addr"; break; default: /* this should never happen */ printf ("%s: Invalid device number %d\n", __FUNCTION__, devnum); return; } temp = getenv_r (s, buf, sizeof (buf)); s = (temp > 0) ? buf : NULL; #ifdef DEBUG printf ("Setting MAC %d to %s\n", devnum, s); #endif for (x = 0; x < 6; ++x) { dev->enetaddr[x] = s ? simple_strtoul (s, &e, 16) : 0; if (s) s = (*e) ? e + 1 : e; } /* ronen - set the MAC addr in the HW */ eth_port_uc_addr_set (devnum, dev->enetaddr, 0); dev->init = (void *) db64460_eth_probe; dev->halt = (void *) ethernet_phy_reset; dev->send = (void *) db64460_eth_transmit; dev->recv = (void *) db64460_eth_poll; ethernet_private = calloc (sizeof (*ethernet_private), 1); dev->priv = (void *)ethernet_private; if (!ethernet_private) { printf ("%s: %s allocation failure, %s\n", __FUNCTION__, dev->name, "Private Device Structure"); free (dev); return; } /* start with an zeroed ETH_PORT_INFO */ memset (ethernet_private, 0, sizeof (ETH_PORT_INFO)); memcpy (ethernet_private->port_mac_addr, dev->enetaddr, 6); /* set pointer to memory for stats data structure etc... */ port_private = calloc (sizeof (*ethernet_private), 1); ethernet_private->port_private = (void *)port_private; if (!port_private) { printf ("%s: %s allocation failure, %s\n", __FUNCTION__, dev->name, "Port Private Device Structure"); free (ethernet_private); free (dev); return; } port_private->stats = calloc (sizeof (struct net_device_stats), 1); if (!port_private->stats) { printf ("%s: %s allocation failure, %s\n", __FUNCTION__, dev->name, "Net stat Structure"); free (port_private); free (ethernet_private); free (dev); return; } memset (ethernet_private->port_private, 0, sizeof (struct mv64460_eth_priv)); switch (devnum) { case 0: ethernet_private->port_num = ETH_0; break; case 1: ethernet_private->port_num = ETH_1; break; case 2: ethernet_private->port_num = ETH_2; break; default: printf ("Invalid device number %d\n", devnum); break; }; port_private->port_num = devnum; /* * Read MIB counter on the GT in order to reset them, * then zero all the stats fields in memory */ mv64460_eth_update_stat (dev); memset (port_private->stats, 0, sizeof (struct net_device_stats)); /* Extract the MAC address from the environment */ switch (devnum) { case 0: s = "ethaddr"; break; case 1: s = "eth1addr"; break; case 2: s = "eth2addr"; break; default: /* this should never happen */ printf ("%s: Invalid device number %d\n", __FUNCTION__, devnum); return; } temp = getenv_r (s, buf, sizeof (buf)); s = (temp > 0) ? buf : NULL; #ifdef DEBUG printf ("Setting MAC %d to %s\n", devnum, s); #endif for (x = 0; x < 6; ++x) { dev->enetaddr[x] = s ? simple_strtoul (s, &e, 16) : 0; if (s) s = (*e) ? e + 1 : e; } DP (printf ("Allocating descriptor and buffer rings\n")); ethernet_private->p_rx_desc_area_base[0] = (ETH_RX_DESC *) memalign (16, RX_DESC_ALIGNED_SIZE * MV64460_RX_QUEUE_SIZE + 1); ethernet_private->p_tx_desc_area_base[0] = (ETH_TX_DESC *) memalign (16, TX_DESC_ALIGNED_SIZE * MV64460_TX_QUEUE_SIZE + 1); ethernet_private->p_rx_buffer_base[0] = (char *) memalign (16, MV64460_RX_QUEUE_SIZE * MV64460_TX_BUFFER_SIZE + 1); ethernet_private->p_tx_buffer_base[0] = (char *) memalign (16, MV64460_RX_QUEUE_SIZE * MV64460_TX_BUFFER_SIZE + 1); #ifdef DEBUG_MV_ETH /* DEBUG OUTPUT prints adresses of globals */ print_globals (dev); #endif eth_register (dev); } DP (printf ("%s: exit\n", __FUNCTION__)); } /********************************************************************** * mv64460_eth_open * * This function is called when openning the network device. The function * should initialize all the hardware, initialize cyclic Rx/Tx * descriptors chain and buffers and allocate an IRQ to the network * device. * * Input : a pointer to the network device structure * / / ronen - changed the output to match net/eth.c needs * Output : nonzero of success , zero if fails. * under construction **********************************************************************/ int mv64460_eth_open (struct eth_device *dev) { return (mv64460_eth_real_open (dev)); } /* Helper function for mv64460_eth_open */ static int mv64460_eth_real_open (struct eth_device *dev) { unsigned int queue; ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; unsigned int port_num; u32 port_status, phy_reg_data; ethernet_private = (ETH_PORT_INFO *) dev->priv; /* ronen - when we update the MAC env params we only update dev->enetaddr see ./net/eth.c eth_set_enetaddr() */ memcpy (ethernet_private->port_mac_addr, dev->enetaddr, 6); port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; /* Stop RX Queues */ MV_REG_WRITE (MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG (port_num), 0x0000ff00); /* Clear the ethernet port interrupts */ MV_REG_WRITE (MV64460_ETH_INTERRUPT_CAUSE_REG (port_num), 0); MV_REG_WRITE (MV64460_ETH_INTERRUPT_CAUSE_EXTEND_REG (port_num), 0); /* Unmask RX buffer and TX end interrupt */ MV_REG_WRITE (MV64460_ETH_INTERRUPT_MASK_REG (port_num), INT_CAUSE_UNMASK_ALL); /* Unmask phy and link status changes interrupts */ MV_REG_WRITE (MV64460_ETH_INTERRUPT_EXTEND_MASK_REG (port_num), INT_CAUSE_UNMASK_ALL_EXT); /* Set phy address of the port */ ethernet_private->port_phy_addr = 0x8 + port_num; /* Activate the DMA channels etc */ eth_port_init (ethernet_private); /* "Allocate" setup TX rings */ for (queue = 0; queue < MV64460_TX_QUEUE_NUM; queue++) { unsigned int size; port_private->tx_ring_size[queue] = MV64460_TX_QUEUE_SIZE; size = (port_private->tx_ring_size[queue] * TX_DESC_ALIGNED_SIZE); /*size = no of DESCs times DESC-size */ ethernet_private->tx_desc_area_size[queue] = size; /* first clear desc area completely */ memset ((void *) ethernet_private->p_tx_desc_area_base[queue], 0, ethernet_private->tx_desc_area_size[queue]); /* initialize tx desc ring with low level driver */ if (ether_init_tx_desc_ring (ethernet_private, ETH_Q0, port_private->tx_ring_size[queue], MV64460_TX_BUFFER_SIZE /* Each Buffer is 1600 Byte */ , (unsigned int) ethernet_private-> p_tx_desc_area_base[queue], (unsigned int) ethernet_private-> p_tx_buffer_base[queue]) == false) printf ("### Error initializing TX Ring\n"); } /* "Allocate" setup RX rings */ for (queue = 0; queue < MV64460_RX_QUEUE_NUM; queue++) { unsigned int size; /* Meantime RX Ring are fixed - but must be configurable by user */ port_private->rx_ring_size[queue] = MV64460_RX_QUEUE_SIZE; size = (port_private->rx_ring_size[queue] * RX_DESC_ALIGNED_SIZE); ethernet_private->rx_desc_area_size[queue] = size; /* first clear desc area completely */ memset ((void *) ethernet_private->p_rx_desc_area_base[queue], 0, ethernet_private->rx_desc_area_size[queue]); if ((ether_init_rx_desc_ring (ethernet_private, ETH_Q0, port_private->rx_ring_size[queue], MV64460_RX_BUFFER_SIZE /* Each Buffer is 1600 Byte */ , (unsigned int) ethernet_private-> p_rx_desc_area_base[queue], (unsigned int) ethernet_private-> p_rx_buffer_base[queue])) == false) printf ("### Error initializing RX Ring\n"); } eth_port_start (ethernet_private); /* Set maximum receive buffer to 9700 bytes */ MV_REG_WRITE (MV64460_ETH_PORT_SERIAL_CONTROL_REG (port_num), (0x5 << 17) | (MV_REG_READ (MV64460_ETH_PORT_SERIAL_CONTROL_REG (port_num)) & 0xfff1ffff)); /* * Set ethernet MTU for leaky bucket mechanism to 0 - this will * disable the leaky bucket mechanism . */ MV_REG_WRITE (MV64460_ETH_MAXIMUM_TRANSMIT_UNIT (port_num), 0); port_status = MV_REG_READ (MV64460_ETH_PORT_STATUS_REG (port_num)); /* Check Link status on phy */ eth_port_read_smi_reg (port_num, 1, &phy_reg_data); if (!(phy_reg_data & 0x20)) { /* Reset PHY */ if ((ethernet_phy_reset (port_num)) != true) { printf ("$$ Warnning: No link on port %d \n", port_num); return 0; } else { eth_port_read_smi_reg (port_num, 1, &phy_reg_data); if (!(phy_reg_data & 0x20)) { printf ("### Error: Phy is not active\n"); return 0; } } } else { mv64460_eth_print_phy_status (dev); } port_private->eth_running = MAGIC_ETH_RUNNING; return 1; } static int mv64460_eth_free_tx_rings (struct eth_device *dev) { unsigned int queue; ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; unsigned int port_num; volatile ETH_TX_DESC *p_tx_curr_desc; ethernet_private = (ETH_PORT_INFO *) dev->priv; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; /* Stop Tx Queues */ MV_REG_WRITE (MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG (port_num), 0x0000ff00); /* Free TX rings */ DP (printf ("Clearing previously allocated TX queues... ")); for (queue = 0; queue < MV64460_TX_QUEUE_NUM; queue++) { /* Free on TX rings */ for (p_tx_curr_desc = ethernet_private->p_tx_desc_area_base[queue]; ((unsigned int) p_tx_curr_desc <= (unsigned int) ethernet_private->p_tx_desc_area_base[queue] + ethernet_private->tx_desc_area_size[queue]); p_tx_curr_desc = (ETH_TX_DESC *) ((unsigned int) p_tx_curr_desc + TX_DESC_ALIGNED_SIZE)) { /* this is inside for loop */ if (p_tx_curr_desc->return_info != 0) { p_tx_curr_desc->return_info = 0; DP (printf ("freed\n")); } } DP (printf ("Done\n")); } return 0; } static int mv64460_eth_free_rx_rings (struct eth_device *dev) { unsigned int queue; ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; unsigned int port_num; volatile ETH_RX_DESC *p_rx_curr_desc; ethernet_private = (ETH_PORT_INFO *) dev->priv; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; /* Stop RX Queues */ MV_REG_WRITE (MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG (port_num), 0x0000ff00); /* Free RX rings */ DP (printf ("Clearing previously allocated RX queues... ")); for (queue = 0; queue < MV64460_RX_QUEUE_NUM; queue++) { /* Free preallocated skb's on RX rings */ for (p_rx_curr_desc = ethernet_private->p_rx_desc_area_base[queue]; (((unsigned int) p_rx_curr_desc < ((unsigned int) ethernet_private-> p_rx_desc_area_base[queue] + ethernet_private->rx_desc_area_size[queue]))); p_rx_curr_desc = (ETH_RX_DESC *) ((unsigned int) p_rx_curr_desc + RX_DESC_ALIGNED_SIZE)) { if (p_rx_curr_desc->return_info != 0) { p_rx_curr_desc->return_info = 0; DP (printf ("freed\n")); } } DP (printf ("Done\n")); } return 0; } /********************************************************************** * mv64460_eth_stop * * This function is used when closing the network device. * It updates the hardware, * release all memory that holds buffers and descriptors and release the IRQ. * Input : a pointer to the device structure * Output : zero if success , nonzero if fails *********************************************************************/ int mv64460_eth_stop (struct eth_device *dev) { ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; unsigned int port_num; ethernet_private = (ETH_PORT_INFO *) dev->priv; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; /* Disable all gigE address decoder */ MV_REG_WRITE (MV64460_ETH_BASE_ADDR_ENABLE_REG, 0x3f); DP (printf ("%s Ethernet stop called ... \n", __FUNCTION__)); mv64460_eth_real_stop (dev); return 0; }; /* Helper function for mv64460_eth_stop */ static int mv64460_eth_real_stop (struct eth_device *dev) { ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; unsigned int port_num; ethernet_private = (ETH_PORT_INFO *) dev->priv; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; mv64460_eth_free_tx_rings (dev); mv64460_eth_free_rx_rings (dev); eth_port_reset (ethernet_private->port_num); /* Disable ethernet port interrupts */ MV_REG_WRITE (MV64460_ETH_INTERRUPT_CAUSE_REG (port_num), 0); MV_REG_WRITE (MV64460_ETH_INTERRUPT_CAUSE_EXTEND_REG (port_num), 0); /* Mask RX buffer and TX end interrupt */ MV_REG_WRITE (MV64460_ETH_INTERRUPT_MASK_REG (port_num), 0); /* Mask phy and link status changes interrupts */ MV_REG_WRITE (MV64460_ETH_INTERRUPT_EXTEND_MASK_REG (port_num), 0); MV_RESET_REG_BITS (MV64460_CPU_INTERRUPT0_MASK_HIGH, BIT0 << port_num); /* Print Network statistics */ #ifndef UPDATE_STATS_BY_SOFTWARE /* * Print statistics (only if ethernet is running), * then zero all the stats fields in memory */ if (port_private->eth_running == MAGIC_ETH_RUNNING) { port_private->eth_running = 0; mv64460_eth_print_stat (dev); } memset (port_private->stats, 0, sizeof (struct net_device_stats)); #endif DP (printf ("\nEthernet stopped ... \n")); return 0; } /********************************************************************** * mv64460_eth_start_xmit * * This function is queues a packet in the Tx descriptor for * required port. * * Input : skb - a pointer to socket buffer * dev - a pointer to the required port * * Output : zero upon success **********************************************************************/ int mv64460_eth_xmit (struct eth_device *dev, volatile void *dataPtr, int dataSize) { ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; unsigned int port_num; PKT_INFO pkt_info; ETH_FUNC_RET_STATUS status; struct net_device_stats *stats; ETH_FUNC_RET_STATUS release_result; ethernet_private = (ETH_PORT_INFO *) dev->priv; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; stats = port_private->stats; /* Update packet info data structure */ pkt_info.cmd_sts = ETH_TX_FIRST_DESC | ETH_TX_LAST_DESC; /* DMA owned, first last */ pkt_info.byte_cnt = dataSize; pkt_info.buf_ptr = (unsigned int) dataPtr; pkt_info.return_info = 0; status = eth_port_send (ethernet_private, ETH_Q0, &pkt_info); if ((status == ETH_ERROR) || (status == ETH_QUEUE_FULL)) { printf ("Error on transmitting packet .."); if (status == ETH_QUEUE_FULL) printf ("ETH Queue is full. \n"); if (status == ETH_QUEUE_LAST_RESOURCE) printf ("ETH Queue: using last available resource. \n"); goto error; } /* Update statistics and start of transmittion time */ stats->tx_bytes += dataSize; stats->tx_packets++; /* Check if packet(s) is(are) transmitted correctly (release everything) */ do { release_result = eth_tx_return_desc (ethernet_private, ETH_Q0, &pkt_info); switch (release_result) { case ETH_OK: DP (printf ("descriptor released\n")); if (pkt_info.cmd_sts & BIT0) { printf ("Error in TX\n"); stats->tx_errors++; } break; case ETH_RETRY: DP (printf ("transmission still in process\n")); break; case ETH_ERROR: printf ("routine can not access Tx desc ring\n"); break; case ETH_END_OF_JOB: DP (printf ("the routine has nothing to release\n")); break; default: /* should not happen */ break; } } while (release_result == ETH_OK); return 0; /* success */ error: return 1; /* Failed - higher layers will free the skb */ } /********************************************************************** * mv64460_eth_receive * * This function is forward packets that are received from the port's * queues toward kernel core or FastRoute them to another interface. * * Input : dev - a pointer to the required interface * max - maximum number to receive (0 means unlimted) * * Output : number of served packets **********************************************************************/ int mv64460_eth_receive (struct eth_device *dev) { ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; unsigned int port_num; PKT_INFO pkt_info; struct net_device_stats *stats; ethernet_private = (ETH_PORT_INFO *) dev->priv; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; stats = port_private->stats; while ((eth_port_receive (ethernet_private, ETH_Q0, &pkt_info) == ETH_OK)) { #ifdef DEBUG_MV_ETH if (pkt_info.byte_cnt != 0) { printf ("%s: Received %d byte Packet @ 0x%x\n", __FUNCTION__, pkt_info.byte_cnt, pkt_info.buf_ptr); } #endif /* Update statistics. Note byte count includes 4 byte CRC count */ stats->rx_packets++; stats->rx_bytes += pkt_info.byte_cnt; /* * In case received a packet without first / last bits on OR the error * summary bit is on, the packets needs to be dropeed. */ if (((pkt_info. cmd_sts & (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) != (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) || (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)) { stats->rx_dropped++; printf ("Received packet spread on multiple descriptors\n"); /* Is this caused by an error ? */ if (pkt_info.cmd_sts & ETH_ERROR_SUMMARY) { stats->rx_errors++; } /* free these descriptors again without forwarding them to the higher layers */ pkt_info.buf_ptr &= ~0x7; /* realign buffer again */ pkt_info.byte_cnt = 0x0000; /* Reset Byte count */ if (eth_rx_return_buff (ethernet_private, ETH_Q0, &pkt_info) != ETH_OK) { printf ("Error while returning the RX Desc to Ring\n"); } else { DP (printf ("RX Desc returned to Ring\n")); } /* /free these descriptors again */ } else { /* !!! call higher layer processing */ #ifdef DEBUG_MV_ETH printf ("\nNow send it to upper layer protocols (NetReceive) ...\n"); #endif /* let the upper layer handle the packet */ NetReceive ((uchar *) pkt_info.buf_ptr, (int) pkt_info.byte_cnt); /* **************************************************************** */ /* free descriptor */ pkt_info.buf_ptr &= ~0x7; /* realign buffer again */ pkt_info.byte_cnt = 0x0000; /* Reset Byte count */ DP (printf ("RX: pkt_info.buf_ptr = %x\n", pkt_info.buf_ptr)); if (eth_rx_return_buff (ethernet_private, ETH_Q0, &pkt_info) != ETH_OK) { printf ("Error while returning the RX Desc to Ring\n"); } else { DP (printf ("RX Desc returned to Ring\n")); } /* **************************************************************** */ } } mv64460_eth_get_stats (dev); /* update statistics */ return 1; } /********************************************************************** * mv64460_eth_get_stats * * Returns a pointer to the interface statistics. * * Input : dev - a pointer to the required interface * * Output : a pointer to the interface's statistics **********************************************************************/ static struct net_device_stats *mv64460_eth_get_stats (struct eth_device *dev) { ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; unsigned int port_num; ethernet_private = (ETH_PORT_INFO *) dev->priv; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; mv64460_eth_update_stat (dev); return port_private->stats; } /********************************************************************** * mv64460_eth_update_stat * * Update the statistics structure in the private data structure * * Input : pointer to ethernet interface network device structure * Output : N/A **********************************************************************/ static void mv64460_eth_update_stat (struct eth_device *dev) { ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; struct net_device_stats *stats; unsigned int port_num; volatile unsigned int dummy; ethernet_private = (ETH_PORT_INFO *) dev->priv; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; stats = port_private->stats; /* These are false updates */ stats->rx_packets += (unsigned long) eth_read_mib_counter (ethernet_private->port_num, ETH_MIB_GOOD_FRAMES_RECEIVED); stats->tx_packets += (unsigned long) eth_read_mib_counter (ethernet_private->port_num, ETH_MIB_GOOD_FRAMES_SENT); stats->rx_bytes += (unsigned long) eth_read_mib_counter (ethernet_private->port_num, ETH_MIB_GOOD_OCTETS_RECEIVED_LOW); /* * Ideally this should be as follows - * * stats->rx_bytes += stats->rx_bytes + * ((unsigned long) ethReadMibCounter (ethernet_private->port_num , * ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32); * * But the unsigned long in PowerPC and MIPS are 32bit. So the next read * is just a dummy read for proper work of the GigE port */ dummy = eth_read_mib_counter (ethernet_private->port_num, ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH); stats->tx_bytes += (unsigned long) eth_read_mib_counter (ethernet_private->port_num, ETH_MIB_GOOD_OCTETS_SENT_LOW); dummy = eth_read_mib_counter (ethernet_private->port_num, ETH_MIB_GOOD_OCTETS_SENT_HIGH); stats->rx_errors += (unsigned long) eth_read_mib_counter (ethernet_private->port_num, ETH_MIB_MAC_RECEIVE_ERROR); /* Rx dropped is for received packet with CRC error */ stats->rx_dropped += (unsigned long) eth_read_mib_counter (ethernet_private-> port_num, ETH_MIB_BAD_CRC_EVENT); stats->multicast += (unsigned long) eth_read_mib_counter (ethernet_private->port_num, ETH_MIB_MULTICAST_FRAMES_RECEIVED); stats->collisions += (unsigned long) eth_read_mib_counter (ethernet_private-> port_num, ETH_MIB_COLLISION) + (unsigned long) eth_read_mib_counter (ethernet_private-> port_num, ETH_MIB_LATE_COLLISION); /* detailed rx errors */ stats->rx_length_errors += (unsigned long) eth_read_mib_counter (ethernet_private-> port_num, ETH_MIB_UNDERSIZE_RECEIVED) + (unsigned long) eth_read_mib_counter (ethernet_private-> port_num, ETH_MIB_OVERSIZE_RECEIVED); /* detailed tx errors */ } #ifndef UPDATE_STATS_BY_SOFTWARE /********************************************************************** * mv64460_eth_print_stat * * Update the statistics structure in the private data structure * * Input : pointer to ethernet interface network device structure * Output : N/A **********************************************************************/ static void mv64460_eth_print_stat (struct eth_device *dev) { ETH_PORT_INFO *ethernet_private; struct mv64460_eth_priv *port_private; struct net_device_stats *stats; unsigned int port_num; ethernet_private = (ETH_PORT_INFO *) dev->priv; port_private = (struct mv64460_eth_priv *) ethernet_private->port_private; port_num = port_private->port_num; stats = port_private->stats; /* These are false updates */ printf ("\n### Network statistics: ###\n"); printf ("--------------------------\n"); printf (" Packets received: %ld\n", stats->rx_packets); printf (" Packets send: %ld\n", stats->tx_packets); printf (" Received bytes: %ld\n", stats->rx_bytes); printf (" Send bytes: %ld\n", stats->tx_bytes); if (stats->rx_errors != 0) printf (" Rx Errors: %ld\n", stats->rx_errors); if (stats->rx_dropped != 0) printf (" Rx dropped (CRC Errors): %ld\n", stats->rx_dropped); if (stats->multicast != 0) printf (" Rx mulicast frames: %ld\n", stats->multicast); if (stats->collisions != 0) printf (" No. of collisions: %ld\n", stats->collisions); if (stats->rx_length_errors != 0) printf (" Rx length errors: %ld\n", stats->rx_length_errors); } #endif /************************************************************************** *network_start - Network Kick Off Routine UBoot *Inputs : *Outputs : **************************************************************************/ bool db64460_eth_start (struct eth_device *dev) { return (mv64460_eth_open (dev)); /* calls real open */ } /************************************************************************* ************************************************************************** ************************************************************************** * The second part is the low level driver of the gigE ethernet ports. * ************************************************************************** ************************************************************************** *************************************************************************/ /* * based on Linux code * arch/ppc/galileo/EVB64460/mv64460_eth.c - Driver for MV64460X ethernet ports * Copyright (C) 2002 rabeeh@galileo.co.il * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * */ /******************************************************************************** * Marvell's Gigabit Ethernet controller low level driver * * DESCRIPTION: * This file introduce low level API to Marvell's Gigabit Ethernet * controller. This Gigabit Ethernet Controller driver API controls * 1) Operations (i.e. port init, start, reset etc'). * 2) Data flow (i.e. port send, receive etc'). * Each Gigabit Ethernet port is controlled via ETH_PORT_INFO * struct. * This struct includes user configuration information as well as * driver internal data needed for its operations. * * Supported Features: * - This low level driver is OS independent. Allocating memory for * the descriptor rings and buffers are not within the scope of * this driver. * - The user is free from Rx/Tx queue managing. * - This low level driver introduce functionality API that enable * the to operate Marvell's Gigabit Ethernet Controller in a * convenient way. * - Simple Gigabit Ethernet port operation API. * - Simple Gigabit Ethernet port data flow API. * - Data flow and operation API support per queue functionality. * - Support cached descriptors for better performance. * - Enable access to all four DRAM banks and internal SRAM memory * spaces. * - PHY access and control API. * - Port control register configuration API. * - Full control over Unicast and Multicast MAC configurations. * * Operation flow: * * Initialization phase * This phase complete the initialization of the ETH_PORT_INFO * struct. * User information regarding port configuration has to be set * prior to calling the port initialization routine. For example, * the user has to assign the port_phy_addr field which is board * depended parameter. * In this phase any port Tx/Rx activity is halted, MIB counters * are cleared, PHY address is set according to user parameter and * access to DRAM and internal SRAM memory spaces. * * Driver ring initialization * Allocating memory for the descriptor rings and buffers is not * within the scope of this driver. Thus, the user is required to * allocate memory for the descriptors ring and buffers. Those * memory parameters are used by the Rx and Tx ring initialization * routines in order to curve the descriptor linked list in a form * of a ring. * Note: Pay special attention to alignment issues when using * cached descriptors/buffers. In this phase the driver store * information in the ETH_PORT_INFO struct regarding each queue * ring. * * Driver start * This phase prepares the Ethernet port for Rx and Tx activity. * It uses the information stored in the ETH_PORT_INFO struct to * initialize the various port registers. * * Data flow: * All packet references to/from the driver are done using PKT_INFO * struct. * This struct is a unified struct used with Rx and Tx operations. * This way the user is not required to be familiar with neither * Tx nor Rx descriptors structures. * The driver's descriptors rings are management by indexes. * Those indexes controls the ring resources and used to indicate * a SW resource error: * 'current' * This index points to the current available resource for use. For * example in Rx process this index will point to the descriptor * that will be passed to the user upon calling the receive routine. * In Tx process, this index will point to the descriptor * that will be assigned with the user packet info and transmitted. * 'used' * This index points to the descriptor that need to restore its * resources. For example in Rx process, using the Rx buffer return * API will attach the buffer returned in packet info to the * descriptor pointed by 'used'. In Tx process, using the Tx * descriptor return will merely return the user packet info with * the command status of the transmitted buffer pointed by the * 'used' index. Nevertheless, it is essential to use this routine * to update the 'used' index. * 'first' * This index supports Tx Scatter-Gather. It points to the first * descriptor of a packet assembled of multiple buffers. For example * when in middle of Such packet we have a Tx resource error the * 'curr' index get the value of 'first' to indicate that the ring * returned to its state before trying to transmit this packet. * * Receive operation: * The eth_port_receive API set the packet information struct, * passed by the caller, with received information from the * 'current' SDMA descriptor. * It is the user responsibility to return this resource back * to the Rx descriptor ring to enable the reuse of this source. * Return Rx resource is done using the eth_rx_return_buff API. * * Transmit operation: * The eth_port_send API supports Scatter-Gather which enables to * send a packet spanned over multiple buffers. This means that * for each packet info structure given by the user and put into * the Tx descriptors ring, will be transmitted only if the 'LAST' * bit will be set in the packet info command status field. This * API also consider restriction regarding buffer alignments and * sizes. * The user must return a Tx resource after ensuring the buffer * has been transmitted to enable the Tx ring indexes to update. * * BOARD LAYOUT * This device is on-board. No jumper diagram is necessary. * * EXTERNAL INTERFACE * * Prior to calling the initialization routine eth_port_init() the user * must set the following fields under ETH_PORT_INFO struct: * port_num User Ethernet port number. * port_phy_addr User PHY address of Ethernet port. * port_mac_addr[6] User defined port MAC address. * port_config User port configuration value. * port_config_extend User port config extend value. * port_sdma_config User port SDMA config value. * port_serial_control User port serial control value. * *port_virt_to_phys () User function to cast virtual addr to CPU bus addr. * *port_private User scratch pad for user specific data structures. * * This driver introduce a set of default values: * PORT_CONFIG_VALUE Default port configuration value * PORT_CONFIG_EXTEND_VALUE Default port extend configuration value * PORT_SDMA_CONFIG_VALUE Default sdma control value * PORT_SERIAL_CONTROL_VALUE Default port serial control value * * This driver data flow is done using the PKT_INFO struct which is * a unified struct for Rx and Tx operations: * byte_cnt Tx/Rx descriptor buffer byte count. * l4i_chk CPU provided TCP Checksum. For Tx operation only. * cmd_sts Tx/Rx descriptor command status. * buf_ptr Tx/Rx descriptor buffer pointer. * return_info Tx/Rx user resource return information. * * * EXTERNAL SUPPORT REQUIREMENTS * * This driver requires the following external support: * * D_CACHE_FLUSH_LINE (address, address offset) * * This macro applies assembly code to flush and invalidate cache * line. * address - address base. * address offset - address offset * * * CPU_PIPE_FLUSH * * This macro applies assembly code to flush the CPU pipeline. * *******************************************************************************/ /* includes */ /* defines */ /* SDMA command macros */ #define ETH_ENABLE_TX_QUEUE(tx_queue, eth_port) \ MV_REG_WRITE(MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG(eth_port), (1 << tx_queue)) #define ETH_DISABLE_TX_QUEUE(tx_queue, eth_port) \ MV_REG_WRITE(MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG(eth_port),\ (1 << (8 + tx_queue))) #define ETH_ENABLE_RX_QUEUE(rx_queue, eth_port) \ MV_REG_WRITE(MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG(eth_port), (1 << rx_queue)) #define ETH_DISABLE_RX_QUEUE(rx_queue, eth_port) \ MV_REG_WRITE(MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG(eth_port), (1 << (8 + rx_queue))) #define CURR_RFD_GET(p_curr_desc, queue) \ ((p_curr_desc) = p_eth_port_ctrl->p_rx_curr_desc_q[queue]) #define CURR_RFD_SET(p_curr_desc, queue) \ (p_eth_port_ctrl->p_rx_curr_desc_q[queue] = (p_curr_desc)) #define USED_RFD_GET(p_used_desc, queue) \ ((p_used_desc) = p_eth_port_ctrl->p_rx_used_desc_q[queue]) #define USED_RFD_SET(p_used_desc, queue)\ (p_eth_port_ctrl->p_rx_used_desc_q[queue] = (p_used_desc)) #define CURR_TFD_GET(p_curr_desc, queue) \ ((p_curr_desc) = p_eth_port_ctrl->p_tx_curr_desc_q[queue]) #define CURR_TFD_SET(p_curr_desc, queue) \ (p_eth_port_ctrl->p_tx_curr_desc_q[queue] = (p_curr_desc)) #define USED_TFD_GET(p_used_desc, queue) \ ((p_used_desc) = p_eth_port_ctrl->p_tx_used_desc_q[queue]) #define USED_TFD_SET(p_used_desc, queue) \ (p_eth_port_ctrl->p_tx_used_desc_q[queue] = (p_used_desc)) #define FIRST_TFD_GET(p_first_desc, queue) \ ((p_first_desc) = p_eth_port_ctrl->p_tx_first_desc_q[queue]) #define FIRST_TFD_SET(p_first_desc, queue) \ (p_eth_port_ctrl->p_tx_first_desc_q[queue] = (p_first_desc)) /* Macros that save access to desc in order to find next desc pointer */ #define RX_NEXT_DESC_PTR(p_rx_desc, queue) (ETH_RX_DESC*)(((((unsigned int)p_rx_desc - (unsigned int)p_eth_port_ctrl->p_rx_desc_area_base[queue]) + RX_DESC_ALIGNED_SIZE) % p_eth_port_ctrl->rx_desc_area_size[queue]) + (unsigned int)p_eth_port_ctrl->p_rx_desc_area_base[queue]) #define TX_NEXT_DESC_PTR(p_tx_desc, queue) (ETH_TX_DESC*)(((((unsigned int)p_tx_desc - (unsigned int)p_eth_port_ctrl->p_tx_desc_area_base[queue]) + TX_DESC_ALIGNED_SIZE) % p_eth_port_ctrl->tx_desc_area_size[queue]) + (unsigned int)p_eth_port_ctrl->p_tx_desc_area_base[queue]) #define LINK_UP_TIMEOUT 100000 #define PHY_BUSY_TIMEOUT 10000000 /* locals */ /* PHY routines */ static void ethernet_phy_set (ETH_PORT eth_port_num, int phy_addr); static int ethernet_phy_get (ETH_PORT eth_port_num); /* Ethernet Port routines */ static void eth_set_access_control (ETH_PORT eth_port_num, ETH_WIN_PARAM * param); static bool eth_port_uc_addr (ETH_PORT eth_port_num, unsigned char uc_nibble, ETH_QUEUE queue, int option); #if 0 /* FIXME */ static bool eth_port_smc_addr (ETH_PORT eth_port_num, unsigned char mc_byte, ETH_QUEUE queue, int option); static bool eth_port_omc_addr (ETH_PORT eth_port_num, unsigned char crc8, ETH_QUEUE queue, int option); #endif static void eth_b_copy (unsigned int src_addr, unsigned int dst_addr, int byte_count); void eth_dbg (ETH_PORT_INFO * p_eth_port_ctrl); typedef enum _memory_bank { BANK0, BANK1, BANK2, BANK3 } MEMORY_BANK; u32 mv_get_dram_bank_base_addr (MEMORY_BANK bank) { u32 result = 0; u32 enable = MV_REG_READ (MV64460_BASE_ADDR_ENABLE); if (enable & (1 << bank)) return 0; if (bank == BANK0) result = MV_REG_READ (MV64460_CS_0_BASE_ADDR); if (bank == BANK1) result = MV_REG_READ (MV64460_CS_1_BASE_ADDR); if (bank == BANK2) result = MV_REG_READ (MV64460_CS_2_BASE_ADDR); if (bank == BANK3) result = MV_REG_READ (MV64460_CS_3_BASE_ADDR); result &= 0x0000ffff; result = result << 16; return result; } u32 mv_get_dram_bank_size (MEMORY_BANK bank) { u32 result = 0; u32 enable = MV_REG_READ (MV64460_BASE_ADDR_ENABLE); if (enable & (1 << bank)) return 0; if (bank == BANK0) result = MV_REG_READ (MV64460_CS_0_SIZE); if (bank == BANK1) result = MV_REG_READ (MV64460_CS_1_SIZE); if (bank == BANK2) result = MV_REG_READ (MV64460_CS_2_SIZE); if (bank == BANK3) result = MV_REG_READ (MV64460_CS_3_SIZE); result += 1; result &= 0x0000ffff; result = result << 16; return result; } u32 mv_get_internal_sram_base (void) { u32 result; result = MV_REG_READ (MV64460_INTEGRATED_SRAM_BASE_ADDR); result &= 0x0000ffff; result = result << 16; return result; } /******************************************************************************* * eth_port_init - Initialize the Ethernet port driver * * DESCRIPTION: * This function prepares the ethernet port to start its activity: * 1) Completes the ethernet port driver struct initialization toward port * start routine. * 2) Resets the device to a quiescent state in case of warm reboot. * 3) Enable SDMA access to all four DRAM banks as well as internal SRAM. * 4) Clean MAC tables. The reset status of those tables is unknown. * 5) Set PHY address. * Note: Call this routine prior to eth_port_start routine and after setting * user values in the user fields of Ethernet port control struct (i.e. * port_phy_addr). * * INPUT: * ETH_PORT_INFO *p_eth_port_ctrl Ethernet port control struct * * OUTPUT: * See description. * * RETURN: * None. * *******************************************************************************/ static void eth_port_init (ETH_PORT_INFO * p_eth_port_ctrl) { int queue; ETH_WIN_PARAM win_param; p_eth_port_ctrl->port_config = PORT_CONFIG_VALUE; p_eth_port_ctrl->port_config_extend = PORT_CONFIG_EXTEND_VALUE; p_eth_port_ctrl->port_sdma_config = PORT_SDMA_CONFIG_VALUE; p_eth_port_ctrl->port_serial_control = PORT_SERIAL_CONTROL_VALUE; p_eth_port_ctrl->port_rx_queue_command = 0; p_eth_port_ctrl->port_tx_queue_command = 0; /* Zero out SW structs */ for (queue = 0; queue < MAX_RX_QUEUE_NUM; queue++) { CURR_RFD_SET ((ETH_RX_DESC *) 0x00000000, queue); USED_RFD_SET ((ETH_RX_DESC *) 0x00000000, queue); p_eth_port_ctrl->rx_resource_err[queue] = false; } for (queue = 0; queue < MAX_TX_QUEUE_NUM; queue++) { CURR_TFD_SET ((ETH_TX_DESC *) 0x00000000, queue); USED_TFD_SET ((ETH_TX_DESC *) 0x00000000, queue); FIRST_TFD_SET ((ETH_TX_DESC *) 0x00000000, queue); p_eth_port_ctrl->tx_resource_err[queue] = false; } eth_port_reset (p_eth_port_ctrl->port_num); /* Set access parameters for DRAM bank 0 */ win_param.win = ETH_WIN0; /* Use Ethernet window 0 */ win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */ win_param.attributes = EBAR_ATTR_DRAM_CS0; /* Enable DRAM bank */ #ifndef CONFIG_NOT_COHERENT_CACHE win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB; #endif win_param.high_addr = 0; /* Get bank base */ win_param.base_addr = mv_get_dram_bank_base_addr (BANK0); win_param.size = mv_get_dram_bank_size (BANK0); /* Get bank size */ if (win_param.size == 0) win_param.enable = 0; else win_param.enable = 1; /* Enable the access */ win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */ /* Set the access control for address window (EPAPR) READ & WRITE */ eth_set_access_control (p_eth_port_ctrl->port_num, &win_param); /* Set access parameters for DRAM bank 1 */ win_param.win = ETH_WIN1; /* Use Ethernet window 1 */ win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */ win_param.attributes = EBAR_ATTR_DRAM_CS1; /* Enable DRAM bank */ #ifndef CONFIG_NOT_COHERENT_CACHE win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB; #endif win_param.high_addr = 0; /* Get bank base */ win_param.base_addr = mv_get_dram_bank_base_addr (BANK1); win_param.size = mv_get_dram_bank_size (BANK1); /* Get bank size */ if (win_param.size == 0) win_param.enable = 0; else win_param.enable = 1; /* Enable the access */ win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */ /* Set the access control for address window (EPAPR) READ & WRITE */ eth_set_access_control (p_eth_port_ctrl->port_num, &win_param); /* Set access parameters for DRAM bank 2 */ win_param.win = ETH_WIN2; /* Use Ethernet window 2 */ win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */ win_param.attributes = EBAR_ATTR_DRAM_CS2; /* Enable DRAM bank */ #ifndef CONFIG_NOT_COHERENT_CACHE win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB; #endif win_param.high_addr = 0; /* Get bank base */ win_param.base_addr = mv_get_dram_bank_base_addr (BANK2); win_param.size = mv_get_dram_bank_size (BANK2); /* Get bank size */ if (win_param.size == 0) win_param.enable = 0; else win_param.enable = 1; /* Enable the access */ win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */ /* Set the access control for address window (EPAPR) READ & WRITE */ eth_set_access_control (p_eth_port_ctrl->port_num, &win_param); /* Set access parameters for DRAM bank 3 */ win_param.win = ETH_WIN3; /* Use Ethernet window 3 */ win_param.target = ETH_TARGET_DRAM; /* Window target - DDR */ win_param.attributes = EBAR_ATTR_DRAM_CS3; /* Enable DRAM bank */ #ifndef CONFIG_NOT_COHERENT_CACHE win_param.attributes |= EBAR_ATTR_DRAM_CACHE_COHERENCY_WB; #endif win_param.high_addr = 0; /* Get bank base */ win_param.base_addr = mv_get_dram_bank_base_addr (BANK3); win_param.size = mv_get_dram_bank_size (BANK3); /* Get bank size */ if (win_param.size == 0) win_param.enable = 0; else win_param.enable = 1; /* Enable the access */ win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */ /* Set the access control for address window (EPAPR) READ & WRITE */ eth_set_access_control (p_eth_port_ctrl->port_num, &win_param); /* Set access parameters for Internal SRAM */ win_param.win = ETH_WIN4; /* Use Ethernet window 0 */ win_param.target = EBAR_TARGET_CBS; /* Target - Internal SRAM */ win_param.attributes = EBAR_ATTR_CBS_SRAM | EBAR_ATTR_CBS_SRAM_BLOCK0; win_param.high_addr = 0; win_param.base_addr = mv_get_internal_sram_base (); /* Get base addr */ win_param.size = MV64460_INTERNAL_SRAM_SIZE; /* Get bank size */ win_param.enable = 1; /* Enable the access */ win_param.access_ctrl = EWIN_ACCESS_FULL; /* Enable full access */ /* Set the access control for address window (EPAPR) READ & WRITE */ eth_set_access_control (p_eth_port_ctrl->port_num, &win_param); eth_port_init_mac_tables (p_eth_port_ctrl->port_num); ethernet_phy_set (p_eth_port_ctrl->port_num, p_eth_port_ctrl->port_phy_addr); return; } /******************************************************************************* * eth_port_start - Start the Ethernet port activity. * * DESCRIPTION: * This routine prepares the Ethernet port for Rx and Tx activity: * 1. Initialize Tx and Rx Current Descriptor Pointer for each queue that * has been initialized a descriptor's ring (using ether_init_tx_desc_ring * for Tx and ether_init_rx_desc_ring for Rx) * 2. Initialize and enable the Ethernet configuration port by writing to * the port's configuration and command registers. * 3. Initialize and enable the SDMA by writing to the SDMA's * configuration and command registers. * After completing these steps, the ethernet port SDMA can starts to * perform Rx and Tx activities. * * Note: Each Rx and Tx queue descriptor's list must be initialized prior * to calling this function (use ether_init_tx_desc_ring for Tx queues and * ether_init_rx_desc_ring for Rx queues). * * INPUT: * ETH_PORT_INFO *p_eth_port_ctrl Ethernet port control struct * * OUTPUT: * Ethernet port is ready to receive and transmit. * * RETURN: * false if the port PHY is not up. * true otherwise. * *******************************************************************************/ static bool eth_port_start (ETH_PORT_INFO * p_eth_port_ctrl) { int queue; volatile ETH_TX_DESC *p_tx_curr_desc; volatile ETH_RX_DESC *p_rx_curr_desc; unsigned int phy_reg_data; ETH_PORT eth_port_num = p_eth_port_ctrl->port_num; /* Assignment of Tx CTRP of given queue */ for (queue = 0; queue < MAX_TX_QUEUE_NUM; queue++) { CURR_TFD_GET (p_tx_curr_desc, queue); MV_REG_WRITE ((MV64460_ETH_TX_CURRENT_QUEUE_DESC_PTR_0 (eth_port_num) + (4 * queue)), ((unsigned int) p_tx_curr_desc)); } /* Assignment of Rx CRDP of given queue */ for (queue = 0; queue < MAX_RX_QUEUE_NUM; queue++) { CURR_RFD_GET (p_rx_curr_desc, queue); MV_REG_WRITE ((MV64460_ETH_RX_CURRENT_QUEUE_DESC_PTR_0 (eth_port_num) + (4 * queue)), ((unsigned int) p_rx_curr_desc)); if (p_rx_curr_desc != NULL) /* Add the assigned Ethernet address to the port's address table */ eth_port_uc_addr_set (p_eth_port_ctrl->port_num, p_eth_port_ctrl->port_mac_addr, queue); } /* Assign port configuration and command. */ MV_REG_WRITE (MV64460_ETH_PORT_CONFIG_REG (eth_port_num), p_eth_port_ctrl->port_config); MV_REG_WRITE (MV64460_ETH_PORT_CONFIG_EXTEND_REG (eth_port_num), p_eth_port_ctrl->port_config_extend); MV_REG_WRITE (MV64460_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num), p_eth_port_ctrl->port_serial_control); MV_SET_REG_BITS (MV64460_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num), ETH_SERIAL_PORT_ENABLE); /* Assign port SDMA configuration */ MV_REG_WRITE (MV64460_ETH_SDMA_CONFIG_REG (eth_port_num), p_eth_port_ctrl->port_sdma_config); MV_REG_WRITE (MV64460_ETH_TX_QUEUE_0_TOKEN_BUCKET_COUNT (eth_port_num), 0x3fffffff); MV_REG_WRITE (MV64460_ETH_TX_QUEUE_0_TOKEN_BUCKET_CONFIG (eth_port_num), 0x03fffcff); /* Turn off the port/queue bandwidth limitation */ MV_REG_WRITE (MV64460_ETH_MAXIMUM_TRANSMIT_UNIT (eth_port_num), 0x0); /* Enable port Rx. */ MV_REG_WRITE (MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG (eth_port_num), p_eth_port_ctrl->port_rx_queue_command); /* Check if link is up */ eth_port_read_smi_reg (eth_port_num, 1, &phy_reg_data); if (!(phy_reg_data & 0x20)) return false; return true; } /******************************************************************************* * eth_port_uc_addr_set - This function Set the port Unicast address. * * DESCRIPTION: * This function Set the port Ethernet MAC address. * * INPUT: * ETH_PORT eth_port_num Port number. * char * p_addr Address to be set * ETH_QUEUE queue Rx queue number for this MAC address. * * OUTPUT: * Set MAC address low and high registers. also calls eth_port_uc_addr() * To set the unicast table with the proper information. * * RETURN: * N/A. * *******************************************************************************/ static void eth_port_uc_addr_set (ETH_PORT eth_port_num, unsigned char *p_addr, ETH_QUEUE queue) { unsigned int mac_h; unsigned int mac_l; mac_l = (p_addr[4] << 8) | (p_addr[5]); mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) | (p_addr[3] << 0); MV_REG_WRITE (MV64460_ETH_MAC_ADDR_LOW (eth_port_num), mac_l); MV_REG_WRITE (MV64460_ETH_MAC_ADDR_HIGH (eth_port_num), mac_h); /* Accept frames of this address */ eth_port_uc_addr (eth_port_num, p_addr[5], queue, ACCEPT_MAC_ADDR); return; } /******************************************************************************* * eth_port_uc_addr - This function Set the port unicast address table * * DESCRIPTION: * This function locates the proper entry in the Unicast table for the * specified MAC nibble and sets its properties according to function * parameters. * * INPUT: * ETH_PORT eth_port_num Port number. * unsigned char uc_nibble Unicast MAC Address last nibble. * ETH_QUEUE queue Rx queue number for this MAC address. * int option 0 = Add, 1 = remove address. * * OUTPUT: * This function add/removes MAC addresses from the port unicast address * table. * * RETURN: * true is output succeeded. * false if option parameter is invalid. * *******************************************************************************/ static bool eth_port_uc_addr (ETH_PORT eth_port_num, unsigned char uc_nibble, ETH_QUEUE queue, int option) { unsigned int unicast_reg; unsigned int tbl_offset; unsigned int reg_offset; /* Locate the Unicast table entry */ uc_nibble = (0xf & uc_nibble); tbl_offset = (uc_nibble / 4) * 4; /* Register offset from unicast table base */ reg_offset = uc_nibble % 4; /* Entry offset within the above register */ switch (option) { case REJECT_MAC_ADDR: /* Clear accepts frame bit at specified unicast DA table entry */ unicast_reg = MV_REG_READ ((MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE (eth_port_num) + tbl_offset)); unicast_reg &= (0x0E << (8 * reg_offset)); MV_REG_WRITE ((MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE (eth_port_num) + tbl_offset), unicast_reg); break; case ACCEPT_MAC_ADDR: /* Set accepts frame bit at unicast DA filter table entry */ unicast_reg = MV_REG_READ ((MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE (eth_port_num) + tbl_offset)); unicast_reg |= ((0x01 | queue) << (8 * reg_offset)); MV_REG_WRITE ((MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE (eth_port_num) + tbl_offset), unicast_reg); break; default: return false; } return true; } #if 0 /* FIXME */ /******************************************************************************* * eth_port_mc_addr - Multicast address settings. * * DESCRIPTION: * This API controls the MV device MAC multicast support. * The MV device supports multicast using two tables: * 1) Special Multicast Table for MAC addresses of the form * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_fF). * The MAC DA[7:0] bits are used as a pointer to the Special Multicast * Table entries in the DA-Filter table. * In this case, the function calls eth_port_smc_addr() routine to set the * Special Multicast Table. * 2) Other Multicast Table for multicast of another type. A CRC-8bit * is used as an index to the Other Multicast Table entries in the * DA-Filter table. * In this case, the function calculates the CRC-8bit value and calls * eth_port_omc_addr() routine to set the Other Multicast Table. * INPUT: * ETH_PORT eth_port_num Port number. * unsigned char *p_addr Unicast MAC Address. * ETH_QUEUE queue Rx queue number for this MAC address. * int option 0 = Add, 1 = remove address. * * OUTPUT: * See description. * * RETURN: * true is output succeeded. * false if add_address_table_entry( ) failed. * *******************************************************************************/ static void eth_port_mc_addr (ETH_PORT eth_port_num, unsigned char *p_addr, ETH_QUEUE queue, int option) { unsigned int mac_h; unsigned int mac_l; unsigned char crc_result = 0; int mac_array[48]; int crc[8]; int i; if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) && (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) eth_port_smc_addr (eth_port_num, p_addr[5], queue, option); else { /* Calculate CRC-8 out of the given address */ mac_h = (p_addr[0] << 8) | (p_addr[1]); mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) | (p_addr[4] << 8) | (p_addr[5] << 0); for (i = 0; i < 32; i++) mac_array[i] = (mac_l >> i) & 0x1; for (i = 32; i < 48; i++) mac_array[i] = (mac_h >> (i - 32)) & 0x1; crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^ mac_array[39] ^ mac_array[35] ^ mac_array[34] ^ mac_array[31] ^ mac_array[30] ^ mac_array[28] ^ mac_array[23] ^ mac_array[21] ^ mac_array[19] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^ mac_array[8] ^ mac_array[7] ^ mac_array[6] ^ mac_array[0]; crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^ mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[34] ^ mac_array[32] ^ mac_array[30] ^ mac_array[29] ^ mac_array[28] ^ mac_array[24] ^ mac_array[23] ^ mac_array[22] ^ mac_array[21] ^ mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[16] ^ mac_array[15] ^ mac_array[14] ^ mac_array[13] ^ mac_array[12] ^ mac_array[9] ^ mac_array[6] ^ mac_array[1] ^ mac_array[0]; crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^ mac_array[43] ^ mac_array[42] ^ mac_array[39] ^ mac_array[37] ^ mac_array[34] ^ mac_array[33] ^ mac_array[29] ^ mac_array[28] ^ mac_array[25] ^ mac_array[24] ^ mac_array[22] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[6] ^ mac_array[2] ^ mac_array[1] ^ mac_array[0]; crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^ mac_array[40] ^ mac_array[38] ^ mac_array[35] ^ mac_array[34] ^ mac_array[30] ^ mac_array[29] ^ mac_array[26] ^ mac_array[25] ^ mac_array[23] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[7] ^ mac_array[3] ^ mac_array[2] ^ mac_array[1]; crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[35] ^ mac_array[31] ^ mac_array[30] ^ mac_array[27] ^ mac_array[26] ^ mac_array[24] ^ mac_array[19] ^ mac_array[17] ^ mac_array[15] ^ mac_array[14] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[4] ^ mac_array[3] ^ mac_array[2]; crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^ mac_array[42] ^ mac_array[40] ^ mac_array[37] ^ mac_array[36] ^ mac_array[32] ^ mac_array[31] ^ mac_array[28] ^ mac_array[27] ^ mac_array[25] ^ mac_array[20] ^ mac_array[18] ^ mac_array[16] ^ mac_array[15] ^ mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[5] ^ mac_array[4] ^ mac_array[3]; crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^ mac_array[41] ^ mac_array[38] ^ mac_array[37] ^ mac_array[33] ^ mac_array[32] ^ mac_array[29] ^ mac_array[28] ^ mac_array[26] ^ mac_array[21] ^ mac_array[19] ^ mac_array[17] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^ mac_array[10] ^ mac_array[6] ^ mac_array[5] ^ mac_array[4]; crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^ mac_array[39] ^ mac_array[38] ^ mac_array[34] ^ mac_array[33] ^ mac_array[30] ^ mac_array[29] ^ mac_array[27] ^ mac_array[22] ^ mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^ mac_array[11] ^ mac_array[7] ^ mac_array[6] ^ mac_array[5]; for (i = 0; i < 8; i++) crc_result = crc_result | (crc[i] << i); eth_port_omc_addr (eth_port_num, crc_result, queue, option); } return; } /******************************************************************************* * eth_port_smc_addr - Special Multicast address settings. * * DESCRIPTION: * This routine controls the MV device special MAC multicast support. * The Special Multicast Table for MAC addresses supports MAC of the form * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_fF). * The MAC DA[7:0] bits are used as a pointer to the Special Multicast * Table entries in the DA-Filter table. * This function set the Special Multicast Table appropriate entry * according to the argument given. * * INPUT: * ETH_PORT eth_port_num Port number. * unsigned char mc_byte Multicast addr last byte (MAC DA[7:0] bits). * ETH_QUEUE queue Rx queue number for this MAC address. * int option 0 = Add, 1 = remove address. * * OUTPUT: * See description. * * RETURN: * true is output succeeded. * false if option parameter is invalid. * *******************************************************************************/ static bool eth_port_smc_addr (ETH_PORT eth_port_num, unsigned char mc_byte, ETH_QUEUE queue, int option) { unsigned int smc_table_reg; unsigned int tbl_offset; unsigned int reg_offset; /* Locate the SMC table entry */ tbl_offset = (mc_byte / 4) * 4; /* Register offset from SMC table base */ reg_offset = mc_byte % 4; /* Entry offset within the above register */ queue &= 0x7; switch (option) { case REJECT_MAC_ADDR: /* Clear accepts frame bit at specified Special DA table entry */ smc_table_reg = MV_REG_READ ((MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset)); smc_table_reg &= (0x0E << (8 * reg_offset)); MV_REG_WRITE ((MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), smc_table_reg); break; case ACCEPT_MAC_ADDR: /* Set accepts frame bit at specified Special DA table entry */ smc_table_reg = MV_REG_READ ((MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset)); smc_table_reg |= ((0x01 | queue) << (8 * reg_offset)); MV_REG_WRITE ((MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), smc_table_reg); break; default: return false; } return true; } /******************************************************************************* * eth_port_omc_addr - Multicast address settings. * * DESCRIPTION: * This routine controls the MV device Other MAC multicast support. * The Other Multicast Table is used for multicast of another type. * A CRC-8bit is used as an index to the Other Multicast Table entries * in the DA-Filter table. * The function gets the CRC-8bit value from the calling routine and * set the Other Multicast Table appropriate entry according to the * CRC-8 argument given. * * INPUT: * ETH_PORT eth_port_num Port number. * unsigned char crc8 A CRC-8bit (Polynomial: x^8+x^2+x^1+1). * ETH_QUEUE queue Rx queue number for this MAC address. * int option 0 = Add, 1 = remove address. * * OUTPUT: * See description. * * RETURN: * true is output succeeded. * false if option parameter is invalid. * *******************************************************************************/ static bool eth_port_omc_addr (ETH_PORT eth_port_num, unsigned char crc8, ETH_QUEUE queue, int option) { unsigned int omc_table_reg; unsigned int tbl_offset; unsigned int reg_offset; /* Locate the OMC table entry */ tbl_offset = (crc8 / 4) * 4; /* Register offset from OMC table base */ reg_offset = crc8 % 4; /* Entry offset within the above register */ queue &= 0x7; switch (option) { case REJECT_MAC_ADDR: /* Clear accepts frame bit at specified Other DA table entry */ omc_table_reg = MV_REG_READ ((MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset)); omc_table_reg &= (0x0E << (8 * reg_offset)); MV_REG_WRITE ((MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), omc_table_reg); break; case ACCEPT_MAC_ADDR: /* Set accepts frame bit at specified Other DA table entry */ omc_table_reg = MV_REG_READ ((MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset)); omc_table_reg |= ((0x01 | queue) << (8 * reg_offset)); MV_REG_WRITE ((MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + tbl_offset), omc_table_reg); break; default: return false; } return true; } #endif /******************************************************************************* * eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables * * DESCRIPTION: * Go through all the DA filter tables (Unicast, Special Multicast & Other * Multicast) and set each entry to 0. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * * OUTPUT: * Multicast and Unicast packets are rejected. * * RETURN: * None. * *******************************************************************************/ static void eth_port_init_mac_tables (ETH_PORT eth_port_num) { int table_index; /* Clear DA filter unicast table (Ex_dFUT) */ for (table_index = 0; table_index <= 0xC; table_index += 4) MV_REG_WRITE ((MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE (eth_port_num) + table_index), 0); for (table_index = 0; table_index <= 0xFC; table_index += 4) { /* Clear DA filter special multicast table (Ex_dFSMT) */ MV_REG_WRITE ((MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE (eth_port_num) + table_index), 0); /* Clear DA filter other multicast table (Ex_dFOMT) */ MV_REG_WRITE ((MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE (eth_port_num) + table_index), 0); } } /******************************************************************************* * eth_clear_mib_counters - Clear all MIB counters * * DESCRIPTION: * This function clears all MIB counters of a specific ethernet port. * A read from the MIB counter will reset the counter. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * * OUTPUT: * After reading all MIB counters, the counters resets. * * RETURN: * MIB counter value. * *******************************************************************************/ static void eth_clear_mib_counters (ETH_PORT eth_port_num) { int i; unsigned int dummy; /* Perform dummy reads from MIB counters */ for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION; i += 4) dummy = MV_REG_READ ((MV64460_ETH_MIB_COUNTERS_BASE (eth_port_num) + i)); return; } /******************************************************************************* * eth_read_mib_counter - Read a MIB counter * * DESCRIPTION: * This function reads a MIB counter of a specific ethernet port. * NOTE - If read from ETH_MIB_GOOD_OCTETS_RECEIVED_LOW, then the * following read must be from ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH * register. The same applies for ETH_MIB_GOOD_OCTETS_SENT_LOW and * ETH_MIB_GOOD_OCTETS_SENT_HIGH * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * unsigned int mib_offset MIB counter offset (use ETH_MIB_... macros). * * OUTPUT: * After reading the MIB counter, the counter resets. * * RETURN: * MIB counter value. * *******************************************************************************/ unsigned int eth_read_mib_counter (ETH_PORT eth_port_num, unsigned int mib_offset) { return (MV_REG_READ (MV64460_ETH_MIB_COUNTERS_BASE (eth_port_num) + mib_offset)); } /******************************************************************************* * ethernet_phy_set - Set the ethernet port PHY address. * * DESCRIPTION: * This routine set the ethernet port PHY address according to given * parameter. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * * OUTPUT: * Set PHY Address Register with given PHY address parameter. * * RETURN: * None. * *******************************************************************************/ static void ethernet_phy_set (ETH_PORT eth_port_num, int phy_addr) { unsigned int reg_data; reg_data = MV_REG_READ (MV64460_ETH_PHY_ADDR_REG); reg_data &= ~(0x1F << (5 * eth_port_num)); reg_data |= (phy_addr << (5 * eth_port_num)); MV_REG_WRITE (MV64460_ETH_PHY_ADDR_REG, reg_data); return; } /******************************************************************************* * ethernet_phy_get - Get the ethernet port PHY address. * * DESCRIPTION: * This routine returns the given ethernet port PHY address. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * * OUTPUT: * None. * * RETURN: * PHY address. * *******************************************************************************/ static int ethernet_phy_get (ETH_PORT eth_port_num) { unsigned int reg_data; reg_data = MV_REG_READ (MV64460_ETH_PHY_ADDR_REG); return ((reg_data >> (5 * eth_port_num)) & 0x1f); } /******************************************************************************* * ethernet_phy_reset - Reset Ethernet port PHY. * * DESCRIPTION: * This routine utilize the SMI interface to reset the ethernet port PHY. * The routine waits until the link is up again or link up is timeout. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * * OUTPUT: * The ethernet port PHY renew its link. * * RETURN: * None. * *******************************************************************************/ static bool ethernet_phy_reset (ETH_PORT eth_port_num) { unsigned int time_out = 50; unsigned int phy_reg_data; /* Reset the PHY */ eth_port_read_smi_reg (eth_port_num, 0, &phy_reg_data); phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */ eth_port_write_smi_reg (eth_port_num, 0, phy_reg_data); /* Poll on the PHY LINK */ do { eth_port_read_smi_reg (eth_port_num, 1, &phy_reg_data); if (time_out-- == 0) return false; } while (!(phy_reg_data & 0x20)); return true; } /******************************************************************************* * eth_port_reset - Reset Ethernet port * * DESCRIPTION: * This routine resets the chip by aborting any SDMA engine activity and * clearing the MIB counters. The Receiver and the Transmit unit are in * idle state after this command is performed and the port is disabled. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * * OUTPUT: * Channel activity is halted. * * RETURN: * None. * *******************************************************************************/ static void eth_port_reset (ETH_PORT eth_port_num) { unsigned int reg_data; /* Stop Tx port activity. Check port Tx activity. */ reg_data = MV_REG_READ (MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG (eth_port_num)); if (reg_data & 0xFF) { /* Issue stop command for active channels only */ MV_REG_WRITE (MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG (eth_port_num), (reg_data << 8)); /* Wait for all Tx activity to terminate. */ do { /* Check port cause register that all Tx queues are stopped */ reg_data = MV_REG_READ (MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG (eth_port_num)); } while (reg_data & 0xFF); } /* Stop Rx port activity. Check port Rx activity. */ reg_data = MV_REG_READ (MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG (eth_port_num)); if (reg_data & 0xFF) { /* Issue stop command for active channels only */ MV_REG_WRITE (MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG (eth_port_num), (reg_data << 8)); /* Wait for all Rx activity to terminate. */ do { /* Check port cause register that all Rx queues are stopped */ reg_data = MV_REG_READ (MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG (eth_port_num)); } while (reg_data & 0xFF); } /* Clear all MIB counters */ eth_clear_mib_counters (eth_port_num); /* Reset the Enable bit in the Configuration Register */ reg_data = MV_REG_READ (MV64460_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num)); reg_data &= ~ETH_SERIAL_PORT_ENABLE; MV_REG_WRITE (MV64460_ETH_PORT_SERIAL_CONTROL_REG (eth_port_num), reg_data); return; } #if 0 /* Not needed here */ /******************************************************************************* * ethernet_set_config_reg - Set specified bits in configuration register. * * DESCRIPTION: * This function sets specified bits in the given ethernet * configuration register. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * unsigned int value 32 bit value. * * OUTPUT: * The set bits in the value parameter are set in the configuration * register. * * RETURN: * None. * *******************************************************************************/ static void ethernet_set_config_reg (ETH_PORT eth_port_num, unsigned int value) { unsigned int eth_config_reg; eth_config_reg = MV_REG_READ (MV64460_ETH_PORT_CONFIG_REG (eth_port_num)); eth_config_reg |= value; MV_REG_WRITE (MV64460_ETH_PORT_CONFIG_REG (eth_port_num), eth_config_reg); return; } #endif #if 0 /* FIXME */ /******************************************************************************* * ethernet_reset_config_reg - Reset specified bits in configuration register. * * DESCRIPTION: * This function resets specified bits in the given Ethernet * configuration register. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * unsigned int value 32 bit value. * * OUTPUT: * The set bits in the value parameter are reset in the configuration * register. * * RETURN: * None. * *******************************************************************************/ static void ethernet_reset_config_reg (ETH_PORT eth_port_num, unsigned int value) { unsigned int eth_config_reg; eth_config_reg = MV_REG_READ (MV64460_ETH_PORT_CONFIG_EXTEND_REG (eth_port_num)); eth_config_reg &= ~value; MV_REG_WRITE (MV64460_ETH_PORT_CONFIG_EXTEND_REG (eth_port_num), eth_config_reg); return; } #endif #if 0 /* Not needed here */ /******************************************************************************* * ethernet_get_config_reg - Get the port configuration register * * DESCRIPTION: * This function returns the configuration register value of the given * ethernet port. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * * OUTPUT: * None. * * RETURN: * Port configuration register value. * *******************************************************************************/ static unsigned int ethernet_get_config_reg (ETH_PORT eth_port_num) { unsigned int eth_config_reg; eth_config_reg = MV_REG_READ (MV64460_ETH_PORT_CONFIG_EXTEND_REG (eth_port_num)); return eth_config_reg; } #endif /******************************************************************************* * eth_port_read_smi_reg - Read PHY registers * * DESCRIPTION: * This routine utilize the SMI interface to interact with the PHY in * order to perform PHY register read. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * unsigned int phy_reg PHY register address offset. * unsigned int *value Register value buffer. * * OUTPUT: * Write the value of a specified PHY register into given buffer. * * RETURN: * false if the PHY is busy or read data is not in valid state. * true otherwise. * *******************************************************************************/ static bool eth_port_read_smi_reg (ETH_PORT eth_port_num, unsigned int phy_reg, unsigned int *value) { unsigned int reg_value; unsigned int time_out = PHY_BUSY_TIMEOUT; int phy_addr; phy_addr = ethernet_phy_get (eth_port_num); /* printf(" Phy-Port %d has addess %d \n",eth_port_num, phy_addr );*/ /* first check that it is not busy */ do { reg_value = MV_REG_READ (MV64460_ETH_SMI_REG); if (time_out-- == 0) { return false; } } while (reg_value & ETH_SMI_BUSY); /* not busy */ MV_REG_WRITE (MV64460_ETH_SMI_REG, (phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_READ); time_out = PHY_BUSY_TIMEOUT; /* initialize the time out var again */ do { reg_value = MV_REG_READ (MV64460_ETH_SMI_REG); if (time_out-- == 0) { return false; } } while ((reg_value & ETH_SMI_READ_VALID) != ETH_SMI_READ_VALID); /* Bit set equ operation done */ /* Wait for the data to update in the SMI register */ #define PHY_UPDATE_TIMEOUT 10000 for (time_out = 0; time_out < PHY_UPDATE_TIMEOUT; time_out++); reg_value = MV_REG_READ (MV64460_ETH_SMI_REG); *value = reg_value & 0xffff; return true; } /******************************************************************************* * eth_port_write_smi_reg - Write to PHY registers * * DESCRIPTION: * This routine utilize the SMI interface to interact with the PHY in * order to perform writes to PHY registers. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * unsigned int phy_reg PHY register address offset. * unsigned int value Register value. * * OUTPUT: * Write the given value to the specified PHY register. * * RETURN: * false if the PHY is busy. * true otherwise. * *******************************************************************************/ static bool eth_port_write_smi_reg (ETH_PORT eth_port_num, unsigned int phy_reg, unsigned int value) { unsigned int reg_value; unsigned int time_out = PHY_BUSY_TIMEOUT; int phy_addr; phy_addr = ethernet_phy_get (eth_port_num); /* first check that it is not busy */ do { reg_value = MV_REG_READ (MV64460_ETH_SMI_REG); if (time_out-- == 0) { return false; } } while (reg_value & ETH_SMI_BUSY); /* not busy */ MV_REG_WRITE (MV64460_ETH_SMI_REG, (phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_WRITE | (value & 0xffff)); return true; } /******************************************************************************* * eth_set_access_control - Config address decode parameters for Ethernet unit * * DESCRIPTION: * This function configures the address decode parameters for the Gigabit * Ethernet Controller according the given parameters struct. * * INPUT: * ETH_PORT eth_port_num Ethernet Port number. See ETH_PORT enum. * ETH_WIN_PARAM *param Address decode parameter struct. * * OUTPUT: * An access window is opened using the given access parameters. * * RETURN: * None. * *******************************************************************************/ static void eth_set_access_control (ETH_PORT eth_port_num, ETH_WIN_PARAM * param) { unsigned int access_prot_reg; /* Set access control register */ access_prot_reg = MV_REG_READ (MV64460_ETH_ACCESS_PROTECTION_REG (eth_port_num)); access_prot_reg &= (~(3 << (param->win * 2))); /* clear window permission */ access_prot_reg |= (param->access_ctrl << (param->win * 2)); MV_REG_WRITE (MV64460_ETH_ACCESS_PROTECTION_REG (eth_port_num), access_prot_reg); /* Set window Size reg (SR) */ MV_REG_WRITE ((MV64460_ETH_SIZE_REG_0 + (ETH_SIZE_REG_GAP * param->win)), (((param->size / 0x10000) - 1) << 16)); /* Set window Base address reg (BA) */ MV_REG_WRITE ((MV64460_ETH_BAR_0 + (ETH_BAR_GAP * param->win)), (param->target | param->attributes | param->base_addr)); /* High address remap reg (HARR) */ if (param->win < 4) MV_REG_WRITE ((MV64460_ETH_HIGH_ADDR_REMAP_REG_0 + (ETH_HIGH_ADDR_REMAP_REG_GAP * param->win)), param->high_addr); /* Base address enable reg (BARER) */ if (param->enable == 1) MV_RESET_REG_BITS (MV64460_ETH_BASE_ADDR_ENABLE_REG, (1 << param->win)); else MV_SET_REG_BITS (MV64460_ETH_BASE_ADDR_ENABLE_REG, (1 << param->win)); } /******************************************************************************* * ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory. * * DESCRIPTION: * This function prepares a Rx chained list of descriptors and packet * buffers in a form of a ring. The routine must be called after port * initialization routine and before port start routine. * The Ethernet SDMA engine uses CPU bus addresses to access the various * devices in the system (i.e. DRAM). This function uses the ethernet * struct 'virtual to physical' routine (set by the user) to set the ring * with physical addresses. * * INPUT: * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct. * ETH_QUEUE rx_queue Number of Rx queue. * int rx_desc_num Number of Rx descriptors * int rx_buff_size Size of Rx buffer * unsigned int rx_desc_base_addr Rx descriptors memory area base addr. * unsigned int rx_buff_base_addr Rx buffer memory area base addr. * * OUTPUT: * The routine updates the Ethernet port control struct with information * regarding the Rx descriptors and buffers. * * RETURN: * false if the given descriptors memory area is not aligned according to * Ethernet SDMA specifications. * true otherwise. * *******************************************************************************/ static bool ether_init_rx_desc_ring (ETH_PORT_INFO * p_eth_port_ctrl, ETH_QUEUE rx_queue, int rx_desc_num, int rx_buff_size, unsigned int rx_desc_base_addr, unsigned int rx_buff_base_addr) { ETH_RX_DESC *p_rx_desc; ETH_RX_DESC *p_rx_prev_desc; /* pointer to link with the last descriptor */ unsigned int buffer_addr; int ix; /* a counter */ p_rx_desc = (ETH_RX_DESC *) rx_desc_base_addr; p_rx_prev_desc = p_rx_desc; buffer_addr = rx_buff_base_addr; /* Rx desc Must be 4LW aligned (i.e. Descriptor_Address[3:0]=0000). */ if (rx_buff_base_addr & 0xF) return false; /* Rx buffers are limited to 64K bytes and Minimum size is 8 bytes */ if ((rx_buff_size < 8) || (rx_buff_size > RX_BUFFER_MAX_SIZE)) return false; /* Rx buffers must be 64-bit aligned. */ if ((rx_buff_base_addr + rx_buff_size) & 0x7) return false; /* initialize the Rx descriptors ring */ for (ix = 0; ix < rx_desc_num; ix++) { p_rx_desc->buf_size = rx_buff_size; p_rx_desc->byte_cnt = 0x0000; p_rx_desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT; p_rx_desc->next_desc_ptr = ((unsigned int) p_rx_desc) + RX_DESC_ALIGNED_SIZE; p_rx_desc->buf_ptr = buffer_addr; p_rx_desc->return_info = 0x00000000; D_CACHE_FLUSH_LINE (p_rx_desc, 0); buffer_addr += rx_buff_size; p_rx_prev_desc = p_rx_desc; p_rx_desc = (ETH_RX_DESC *) ((unsigned int) p_rx_desc + RX_DESC_ALIGNED_SIZE); } /* Closing Rx descriptors ring */ p_rx_prev_desc->next_desc_ptr = (rx_desc_base_addr); D_CACHE_FLUSH_LINE (p_rx_prev_desc, 0); /* Save Rx desc pointer to driver struct. */ CURR_RFD_SET ((ETH_RX_DESC *) rx_desc_base_addr, rx_queue); USED_RFD_SET ((ETH_RX_DESC *) rx_desc_base_addr, rx_queue); p_eth_port_ctrl->p_rx_desc_area_base[rx_queue] = (ETH_RX_DESC *) rx_desc_base_addr; p_eth_port_ctrl->rx_desc_area_size[rx_queue] = rx_desc_num * RX_DESC_ALIGNED_SIZE; p_eth_port_ctrl->port_rx_queue_command |= (1 << rx_queue); return true; } /******************************************************************************* * ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory. * * DESCRIPTION: * This function prepares a Tx chained list of descriptors and packet * buffers in a form of a ring. The routine must be called after port * initialization routine and before port start routine. * The Ethernet SDMA engine uses CPU bus addresses to access the various * devices in the system (i.e. DRAM). This function uses the ethernet * struct 'virtual to physical' routine (set by the user) to set the ring * with physical addresses. * * INPUT: * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct. * ETH_QUEUE tx_queue Number of Tx queue. * int tx_desc_num Number of Tx descriptors * int tx_buff_size Size of Tx buffer * unsigned int tx_desc_base_addr Tx descriptors memory area base addr. * unsigned int tx_buff_base_addr Tx buffer memory area base addr. * * OUTPUT: * The routine updates the Ethernet port control struct with information * regarding the Tx descriptors and buffers. * * RETURN: * false if the given descriptors memory area is not aligned according to * Ethernet SDMA specifications. * true otherwise. * *******************************************************************************/ static bool ether_init_tx_desc_ring (ETH_PORT_INFO * p_eth_port_ctrl, ETH_QUEUE tx_queue, int tx_desc_num, int tx_buff_size, unsigned int tx_desc_base_addr, unsigned int tx_buff_base_addr) { ETH_TX_DESC *p_tx_desc; ETH_TX_DESC *p_tx_prev_desc; unsigned int buffer_addr; int ix; /* a counter */ /* save the first desc pointer to link with the last descriptor */ p_tx_desc = (ETH_TX_DESC *) tx_desc_base_addr; p_tx_prev_desc = p_tx_desc; buffer_addr = tx_buff_base_addr; /* Tx desc Must be 4LW aligned (i.e. Descriptor_Address[3:0]=0000). */ if (tx_buff_base_addr & 0xF) return false; /* Tx buffers are limited to 64K bytes and Minimum size is 8 bytes */ if ((tx_buff_size > TX_BUFFER_MAX_SIZE) || (tx_buff_size < TX_BUFFER_MIN_SIZE)) return false; /* Initialize the Tx descriptors ring */ for (ix = 0; ix < tx_desc_num; ix++) { p_tx_desc->byte_cnt = 0x0000; p_tx_desc->l4i_chk = 0x0000; p_tx_desc->cmd_sts = 0x00000000; p_tx_desc->next_desc_ptr = ((unsigned int) p_tx_desc) + TX_DESC_ALIGNED_SIZE; p_tx_desc->buf_ptr = buffer_addr; p_tx_desc->return_info = 0x00000000; D_CACHE_FLUSH_LINE (p_tx_desc, 0); buffer_addr += tx_buff_size; p_tx_prev_desc = p_tx_desc; p_tx_desc = (ETH_TX_DESC *) ((unsigned int) p_tx_desc + TX_DESC_ALIGNED_SIZE); } /* Closing Tx descriptors ring */ p_tx_prev_desc->next_desc_ptr = tx_desc_base_addr; D_CACHE_FLUSH_LINE (p_tx_prev_desc, 0); /* Set Tx desc pointer in driver struct. */ CURR_TFD_SET ((ETH_TX_DESC *) tx_desc_base_addr, tx_queue); USED_TFD_SET ((ETH_TX_DESC *) tx_desc_base_addr, tx_queue); /* Init Tx ring base and size parameters */ p_eth_port_ctrl->p_tx_desc_area_base[tx_queue] = (ETH_TX_DESC *) tx_desc_base_addr; p_eth_port_ctrl->tx_desc_area_size[tx_queue] = (tx_desc_num * TX_DESC_ALIGNED_SIZE); /* Add the queue to the list of Tx queues of this port */ p_eth_port_ctrl->port_tx_queue_command |= (1 << tx_queue); return true; } /******************************************************************************* * eth_port_send - Send an Ethernet packet * * DESCRIPTION: * This routine send a given packet described by p_pktinfo parameter. It * supports transmitting of a packet spaned over multiple buffers. The * routine updates 'curr' and 'first' indexes according to the packet * segment passed to the routine. In case the packet segment is first, * the 'first' index is update. In any case, the 'curr' index is updated. * If the routine get into Tx resource error it assigns 'curr' index as * 'first'. This way the function can abort Tx process of multiple * descriptors per packet. * * INPUT: * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct. * ETH_QUEUE tx_queue Number of Tx queue. * PKT_INFO *p_pkt_info User packet buffer. * * OUTPUT: * Tx ring 'curr' and 'first' indexes are updated. * * RETURN: * ETH_QUEUE_FULL in case of Tx resource error. * ETH_ERROR in case the routine can not access Tx desc ring. * ETH_QUEUE_LAST_RESOURCE if the routine uses the last Tx resource. * ETH_OK otherwise. * *******************************************************************************/ static ETH_FUNC_RET_STATUS eth_port_send (ETH_PORT_INFO * p_eth_port_ctrl, ETH_QUEUE tx_queue, PKT_INFO * p_pkt_info) { volatile ETH_TX_DESC *p_tx_desc_first; volatile ETH_TX_DESC *p_tx_desc_curr; volatile ETH_TX_DESC *p_tx_next_desc_curr; volatile ETH_TX_DESC *p_tx_desc_used; unsigned int command_status; /* Do not process Tx ring in case of Tx ring resource error */ if (p_eth_port_ctrl->tx_resource_err[tx_queue] == true) return ETH_QUEUE_FULL; /* Get the Tx Desc ring indexes */ CURR_TFD_GET (p_tx_desc_curr, tx_queue); USED_TFD_GET (p_tx_desc_used, tx_queue); if (p_tx_desc_curr == NULL) return ETH_ERROR; /* The following parameters are used to save readings from memory */ p_tx_next_desc_curr = TX_NEXT_DESC_PTR (p_tx_desc_curr, tx_queue); command_status = p_pkt_info->cmd_sts | ETH_ZERO_PADDING | ETH_GEN_CRC; if (command_status & (ETH_TX_FIRST_DESC)) { /* Update first desc */ FIRST_TFD_SET (p_tx_desc_curr, tx_queue); p_tx_desc_first = p_tx_desc_curr; } else { FIRST_TFD_GET (p_tx_desc_first, tx_queue); command_status |= ETH_BUFFER_OWNED_BY_DMA; } /* Buffers with a payload smaller than 8 bytes must be aligned to 64-bit */ /* boundary. We use the memory allocated for Tx descriptor. This memory */ /* located in TX_BUF_OFFSET_IN_DESC offset within the Tx descriptor. */ if (p_pkt_info->byte_cnt <= 8) { printf ("You have failed in the < 8 bytes errata - fixme\n"); /* RABEEH - TBD */ return ETH_ERROR; p_tx_desc_curr->buf_ptr = (unsigned int) p_tx_desc_curr + TX_BUF_OFFSET_IN_DESC; eth_b_copy (p_pkt_info->buf_ptr, p_tx_desc_curr->buf_ptr, p_pkt_info->byte_cnt); } else p_tx_desc_curr->buf_ptr = p_pkt_info->buf_ptr; p_tx_desc_curr->byte_cnt = p_pkt_info->byte_cnt; p_tx_desc_curr->return_info = p_pkt_info->return_info; if (p_pkt_info->cmd_sts & (ETH_TX_LAST_DESC)) { /* Set last desc with DMA ownership and interrupt enable. */ p_tx_desc_curr->cmd_sts = command_status | ETH_BUFFER_OWNED_BY_DMA | ETH_TX_ENABLE_INTERRUPT; if (p_tx_desc_curr != p_tx_desc_first) p_tx_desc_first->cmd_sts |= ETH_BUFFER_OWNED_BY_DMA; /* Flush CPU pipe */ D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_curr, 0); D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_first, 0); CPU_PIPE_FLUSH; /* Apply send command */ ETH_ENABLE_TX_QUEUE (tx_queue, p_eth_port_ctrl->port_num); /* Finish Tx packet. Update first desc in case of Tx resource error */ p_tx_desc_first = p_tx_next_desc_curr; FIRST_TFD_SET (p_tx_desc_first, tx_queue); } else { p_tx_desc_curr->cmd_sts = command_status; D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_curr, 0); } /* Check for ring index overlap in the Tx desc ring */ if (p_tx_next_desc_curr == p_tx_desc_used) { /* Update the current descriptor */ CURR_TFD_SET (p_tx_desc_first, tx_queue); p_eth_port_ctrl->tx_resource_err[tx_queue] = true; return ETH_QUEUE_LAST_RESOURCE; } else { /* Update the current descriptor */ CURR_TFD_SET (p_tx_next_desc_curr, tx_queue); return ETH_OK; } } /******************************************************************************* * eth_tx_return_desc - Free all used Tx descriptors * * DESCRIPTION: * This routine returns the transmitted packet information to the caller. * It uses the 'first' index to support Tx desc return in case a transmit * of a packet spanned over multiple buffer still in process. * In case the Tx queue was in "resource error" condition, where there are * no available Tx resources, the function resets the resource error flag. * * INPUT: * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct. * ETH_QUEUE tx_queue Number of Tx queue. * PKT_INFO *p_pkt_info User packet buffer. * * OUTPUT: * Tx ring 'first' and 'used' indexes are updated. * * RETURN: * ETH_ERROR in case the routine can not access Tx desc ring. * ETH_RETRY in case there is transmission in process. * ETH_END_OF_JOB if the routine has nothing to release. * ETH_OK otherwise. * *******************************************************************************/ static ETH_FUNC_RET_STATUS eth_tx_return_desc (ETH_PORT_INFO * p_eth_port_ctrl, ETH_QUEUE tx_queue, PKT_INFO * p_pkt_info) { volatile ETH_TX_DESC *p_tx_desc_used = NULL; volatile ETH_TX_DESC *p_tx_desc_first = NULL; unsigned int command_status; /* Get the Tx Desc ring indexes */ USED_TFD_GET (p_tx_desc_used, tx_queue); FIRST_TFD_GET (p_tx_desc_first, tx_queue); /* Sanity check */ if (p_tx_desc_used == NULL) return ETH_ERROR; command_status = p_tx_desc_used->cmd_sts; /* Still transmitting... */ if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) { D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_used, 0); return ETH_RETRY; } /* Stop release. About to overlap the current available Tx descriptor */ if ((p_tx_desc_used == p_tx_desc_first) && (p_eth_port_ctrl->tx_resource_err[tx_queue] == false)) { D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_used, 0); return ETH_END_OF_JOB; } /* Pass the packet information to the caller */ p_pkt_info->cmd_sts = command_status; p_pkt_info->return_info = p_tx_desc_used->return_info; p_tx_desc_used->return_info = 0; /* Update the next descriptor to release. */ USED_TFD_SET (TX_NEXT_DESC_PTR (p_tx_desc_used, tx_queue), tx_queue); /* Any Tx return cancels the Tx resource error status */ if (p_eth_port_ctrl->tx_resource_err[tx_queue] == true) p_eth_port_ctrl->tx_resource_err[tx_queue] = false; D_CACHE_FLUSH_LINE ((unsigned int) p_tx_desc_used, 0); return ETH_OK; } /******************************************************************************* * eth_port_receive - Get received information from Rx ring. * * DESCRIPTION: * This routine returns the received data to the caller. There is no * data copying during routine operation. All information is returned * using pointer to packet information struct passed from the caller. * If the routine exhausts Rx ring resources then the resource error flag * is set. * * INPUT: * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct. * ETH_QUEUE rx_queue Number of Rx queue. * PKT_INFO *p_pkt_info User packet buffer. * * OUTPUT: * Rx ring current and used indexes are updated. * * RETURN: * ETH_ERROR in case the routine can not access Rx desc ring. * ETH_QUEUE_FULL if Rx ring resources are exhausted. * ETH_END_OF_JOB if there is no received data. * ETH_OK otherwise. * *******************************************************************************/ static ETH_FUNC_RET_STATUS eth_port_receive (ETH_PORT_INFO * p_eth_port_ctrl, ETH_QUEUE rx_queue, PKT_INFO * p_pkt_info) { volatile ETH_RX_DESC *p_rx_curr_desc; volatile ETH_RX_DESC *p_rx_next_curr_desc; volatile ETH_RX_DESC *p_rx_used_desc; unsigned int command_status; /* Do not process Rx ring in case of Rx ring resource error */ if (p_eth_port_ctrl->rx_resource_err[rx_queue] == true) { printf ("\nRx Queue is full ...\n"); return ETH_QUEUE_FULL; } /* Get the Rx Desc ring 'curr and 'used' indexes */ CURR_RFD_GET (p_rx_curr_desc, rx_queue); USED_RFD_GET (p_rx_used_desc, rx_queue); /* Sanity check */ if (p_rx_curr_desc == NULL) return ETH_ERROR; /* The following parameters are used to save readings from memory */ p_rx_next_curr_desc = RX_NEXT_DESC_PTR (p_rx_curr_desc, rx_queue); command_status = p_rx_curr_desc->cmd_sts; /* Nothing to receive... */ if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) { /* DP(printf("Rx: command_status: %08x\n", command_status)); */ D_CACHE_FLUSH_LINE ((unsigned int) p_rx_curr_desc, 0); /* DP(printf("\nETH_END_OF_JOB ...\n"));*/ return ETH_END_OF_JOB; } p_pkt_info->byte_cnt = (p_rx_curr_desc->byte_cnt) - RX_BUF_OFFSET; p_pkt_info->cmd_sts = command_status; p_pkt_info->buf_ptr = (p_rx_curr_desc->buf_ptr) + RX_BUF_OFFSET; p_pkt_info->return_info = p_rx_curr_desc->return_info; p_pkt_info->l4i_chk = p_rx_curr_desc->buf_size; /* IP fragment indicator */ /* Clean the return info field to indicate that the packet has been */ /* moved to the upper layers */ p_rx_curr_desc->return_info = 0; /* Update 'curr' in data structure */ CURR_RFD_SET (p_rx_next_curr_desc, rx_queue); /* Rx descriptors resource exhausted. Set the Rx ring resource error flag */ if (p_rx_next_curr_desc == p_rx_used_desc) p_eth_port_ctrl->rx_resource_err[rx_queue] = true; D_CACHE_FLUSH_LINE ((unsigned int) p_rx_curr_desc, 0); CPU_PIPE_FLUSH; return ETH_OK; } /******************************************************************************* * eth_rx_return_buff - Returns a Rx buffer back to the Rx ring. * * DESCRIPTION: * This routine returns a Rx buffer back to the Rx ring. It retrieves the * next 'used' descriptor and attached the returned buffer to it. * In case the Rx ring was in "resource error" condition, where there are * no available Rx resources, the function resets the resource error flag. * * INPUT: * ETH_PORT_INFO *p_eth_port_ctrl Ethernet Port Control srtuct. * ETH_QUEUE rx_queue Number of Rx queue. * PKT_INFO *p_pkt_info Information on the returned buffer. * * OUTPUT: * New available Rx resource in Rx descriptor ring. * * RETURN: * ETH_ERROR in case the routine can not access Rx desc ring. * ETH_OK otherwise. * *******************************************************************************/ static ETH_FUNC_RET_STATUS eth_rx_return_buff (ETH_PORT_INFO * p_eth_port_ctrl, ETH_QUEUE rx_queue, PKT_INFO * p_pkt_info) { volatile ETH_RX_DESC *p_used_rx_desc; /* Where to return Rx resource */ /* Get 'used' Rx descriptor */ USED_RFD_GET (p_used_rx_desc, rx_queue); /* Sanity check */ if (p_used_rx_desc == NULL) return ETH_ERROR; p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr; p_used_rx_desc->return_info = p_pkt_info->return_info; p_used_rx_desc->byte_cnt = p_pkt_info->byte_cnt; p_used_rx_desc->buf_size = MV64460_RX_BUFFER_SIZE; /* Reset Buffer size */ /* Flush the write pipe */ CPU_PIPE_FLUSH; /* Return the descriptor to DMA ownership */ p_used_rx_desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT; /* Flush descriptor and CPU pipe */ D_CACHE_FLUSH_LINE ((unsigned int) p_used_rx_desc, 0); CPU_PIPE_FLUSH; /* Move the used descriptor pointer to the next descriptor */ USED_RFD_SET (RX_NEXT_DESC_PTR (p_used_rx_desc, rx_queue), rx_queue); /* Any Rx return cancels the Rx resource error status */ if (p_eth_port_ctrl->rx_resource_err[rx_queue] == true) p_eth_port_ctrl->rx_resource_err[rx_queue] = false; return ETH_OK; } /******************************************************************************* * eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path * * DESCRIPTION: * This routine sets the RX coalescing interrupt mechanism parameter. * This parameter is a timeout counter, that counts in 64 t_clk * chunks ; that when timeout event occurs a maskable interrupt * occurs. * The parameter is calculated using the tClk of the MV-643xx chip * , and the required delay of the interrupt in usec. * * INPUT: * ETH_PORT eth_port_num Ethernet port number * unsigned int t_clk t_clk of the MV-643xx chip in HZ units * unsigned int delay Delay in usec * * OUTPUT: * Interrupt coalescing mechanism value is set in MV-643xx chip. * * RETURN: * The interrupt coalescing value set in the gigE port. * *******************************************************************************/ #if 0 /* FIXME */ static unsigned int eth_port_set_rx_coal (ETH_PORT eth_port_num, unsigned int t_clk, unsigned int delay) { unsigned int coal; coal = ((t_clk / 1000000) * delay) / 64; /* Set RX Coalescing mechanism */ MV_REG_WRITE (MV64460_ETH_SDMA_CONFIG_REG (eth_port_num), ((coal & 0x3fff) << 8) | (MV_REG_READ (MV64460_ETH_SDMA_CONFIG_REG (eth_port_num)) & 0xffc000ff)); return coal; } #endif /******************************************************************************* * eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path * * DESCRIPTION: * This routine sets the TX coalescing interrupt mechanism parameter. * This parameter is a timeout counter, that counts in 64 t_clk * chunks ; that when timeout event occurs a maskable interrupt * occurs. * The parameter is calculated using the t_cLK frequency of the * MV-643xx chip and the required delay in the interrupt in uSec * * INPUT: * ETH_PORT eth_port_num Ethernet port number * unsigned int t_clk t_clk of the MV-643xx chip in HZ units * unsigned int delay Delay in uSeconds * * OUTPUT: * Interrupt coalescing mechanism value is set in MV-643xx chip. * * RETURN: * The interrupt coalescing value set in the gigE port. * *******************************************************************************/ #if 0 /* FIXME */ static unsigned int eth_port_set_tx_coal (ETH_PORT eth_port_num, unsigned int t_clk, unsigned int delay) { unsigned int coal; coal = ((t_clk / 1000000) * delay) / 64; /* Set TX Coalescing mechanism */ MV_REG_WRITE (MV64460_ETH_TX_FIFO_URGENT_THRESHOLD_REG (eth_port_num), coal << 4); return coal; } #endif /******************************************************************************* * eth_b_copy - Copy bytes from source to destination * * DESCRIPTION: * This function supports the eight bytes limitation on Tx buffer size. * The routine will zero eight bytes starting from the destination address * followed by copying bytes from the source address to the destination. * * INPUT: * unsigned int src_addr 32 bit source address. * unsigned int dst_addr 32 bit destination address. * int byte_count Number of bytes to copy. * * OUTPUT: * See description. * * RETURN: * None. * *******************************************************************************/ static void eth_b_copy (unsigned int src_addr, unsigned int dst_addr, int byte_count) { /* Zero the dst_addr area */ *(unsigned int *) dst_addr = 0x0; while (byte_count != 0) { *(char *) dst_addr = *(char *) src_addr; dst_addr++; src_addr++; byte_count--; } }