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- /*
- * drivers/net/mv643xx_eth.c - Driver for MV643XX ethernet ports
- * Copyright (C) 2002 Matthew Dharm <mdharm@momenco.com>
- *
- * Based on the 64360 driver from:
- * Copyright (C) 2002 rabeeh@galileo.co.il
- *
- * Copyright (C) 2003 PMC-Sierra, Inc.,
- * written by Manish Lachwani
- *
- * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org>
- *
- * Copyright (C) 2004-2006 MontaVista Software, Inc.
- * Dale Farnsworth <dale@farnsworth.org>
- *
- * Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com>
- * <sjhill@realitydiluted.com>
- *
- * 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.
- */
- #include <linux/init.h>
- #include <linux/dma-mapping.h>
- #include <linux/in.h>
- #include <linux/ip.h>
- #include <linux/tcp.h>
- #include <linux/udp.h>
- #include <linux/etherdevice.h>
- #include <linux/bitops.h>
- #include <linux/delay.h>
- #include <linux/ethtool.h>
- #include <linux/platform_device.h>
- #include <asm/io.h>
- #include <asm/types.h>
- #include <asm/pgtable.h>
- #include <asm/system.h>
- #include <asm/delay.h>
- #include "mv643xx_eth.h"
- /* Static function declarations */
- static void eth_port_uc_addr_get(struct net_device *dev,
- unsigned char *MacAddr);
- static void eth_port_set_multicast_list(struct net_device *);
- static void mv643xx_eth_port_enable_tx(unsigned int port_num,
- unsigned int queues);
- static void mv643xx_eth_port_enable_rx(unsigned int port_num,
- unsigned int queues);
- static unsigned int mv643xx_eth_port_disable_tx(unsigned int port_num);
- static unsigned int mv643xx_eth_port_disable_rx(unsigned int port_num);
- static int mv643xx_eth_open(struct net_device *);
- static int mv643xx_eth_stop(struct net_device *);
- static int mv643xx_eth_change_mtu(struct net_device *, int);
- static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *);
- static void eth_port_init_mac_tables(unsigned int eth_port_num);
- #ifdef MV643XX_NAPI
- static int mv643xx_poll(struct net_device *dev, int *budget);
- #endif
- static int ethernet_phy_get(unsigned int eth_port_num);
- static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr);
- static int ethernet_phy_detect(unsigned int eth_port_num);
- static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location);
- static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val);
- static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
- static const struct ethtool_ops mv643xx_ethtool_ops;
- static char mv643xx_driver_name[] = "mv643xx_eth";
- static char mv643xx_driver_version[] = "1.0";
- static void __iomem *mv643xx_eth_shared_base;
- /* used to protect MV643XX_ETH_SMI_REG, which is shared across ports */
- static DEFINE_SPINLOCK(mv643xx_eth_phy_lock);
- static inline u32 mv_read(int offset)
- {
- void __iomem *reg_base;
- reg_base = mv643xx_eth_shared_base - MV643XX_ETH_SHARED_REGS;
- return readl(reg_base + offset);
- }
- static inline void mv_write(int offset, u32 data)
- {
- void __iomem *reg_base;
- reg_base = mv643xx_eth_shared_base - MV643XX_ETH_SHARED_REGS;
- writel(data, reg_base + offset);
- }
- /*
- * Changes MTU (maximum transfer unit) of the gigabit ethenret port
- *
- * Input : pointer to ethernet interface network device structure
- * new mtu size
- * Output : 0 upon success, -EINVAL upon failure
- */
- static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
- {
- if ((new_mtu > 9500) || (new_mtu < 64))
- return -EINVAL;
- dev->mtu = new_mtu;
- /*
- * Stop then re-open the interface. This will allocate RX skb's with
- * the new MTU.
- * There is a possible danger that the open will not successed, due
- * to memory is full, which might fail the open function.
- */
- if (netif_running(dev)) {
- mv643xx_eth_stop(dev);
- if (mv643xx_eth_open(dev))
- printk(KERN_ERR
- "%s: Fatal error on opening device\n",
- dev->name);
- }
- return 0;
- }
- /*
- * mv643xx_eth_rx_refill_descs
- *
- * Fills / refills RX queue on a certain gigabit ethernet port
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
- static void mv643xx_eth_rx_refill_descs(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- struct pkt_info pkt_info;
- struct sk_buff *skb;
- int unaligned;
- while (mp->rx_desc_count < mp->rx_ring_size) {
- skb = dev_alloc_skb(ETH_RX_SKB_SIZE + dma_get_cache_alignment());
- if (!skb)
- break;
- mp->rx_desc_count++;
- unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
- if (unaligned)
- skb_reserve(skb, dma_get_cache_alignment() - unaligned);
- pkt_info.cmd_sts = ETH_RX_ENABLE_INTERRUPT;
- pkt_info.byte_cnt = ETH_RX_SKB_SIZE;
- pkt_info.buf_ptr = dma_map_single(NULL, skb->data,
- ETH_RX_SKB_SIZE, DMA_FROM_DEVICE);
- pkt_info.return_info = skb;
- if (eth_rx_return_buff(mp, &pkt_info) != ETH_OK) {
- printk(KERN_ERR
- "%s: Error allocating RX Ring\n", dev->name);
- break;
- }
- skb_reserve(skb, ETH_HW_IP_ALIGN);
- }
- /*
- * If RX ring is empty of SKB, set a timer to try allocating
- * again at a later time.
- */
- if (mp->rx_desc_count == 0) {
- printk(KERN_INFO "%s: Rx ring is empty\n", dev->name);
- mp->timeout.expires = jiffies + (HZ / 10); /* 100 mSec */
- add_timer(&mp->timeout);
- }
- }
- /*
- * mv643xx_eth_rx_refill_descs_timer_wrapper
- *
- * Timer routine to wake up RX queue filling task. This function is
- * used only in case the RX queue is empty, and all alloc_skb has
- * failed (due to out of memory event).
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
- static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data)
- {
- mv643xx_eth_rx_refill_descs((struct net_device *)data);
- }
- /*
- * mv643xx_eth_update_mac_address
- *
- * Update the MAC address of the port in the address table
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
- static void mv643xx_eth_update_mac_address(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- eth_port_init_mac_tables(port_num);
- eth_port_uc_addr_set(port_num, dev->dev_addr);
- }
- /*
- * mv643xx_eth_set_rx_mode
- *
- * Change from promiscuos to regular rx mode
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
- static void mv643xx_eth_set_rx_mode(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- u32 config_reg;
- config_reg = mv_read(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num));
- if (dev->flags & IFF_PROMISC)
- config_reg |= (u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
- else
- config_reg &= ~(u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
- mv_write(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num), config_reg);
- eth_port_set_multicast_list(dev);
- }
- /*
- * mv643xx_eth_set_mac_address
- *
- * Change the interface's mac address.
- * No special hardware thing should be done because interface is always
- * put in promiscuous mode.
- *
- * Input : pointer to ethernet interface network device structure and
- * a pointer to the designated entry to be added to the cache.
- * Output : zero upon success, negative upon failure
- */
- static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
- {
- int i;
- for (i = 0; i < 6; i++)
- /* +2 is for the offset of the HW addr type */
- dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
- mv643xx_eth_update_mac_address(dev);
- return 0;
- }
- /*
- * mv643xx_eth_tx_timeout
- *
- * Called upon a timeout on transmitting a packet
- *
- * Input : pointer to ethernet interface network device structure.
- * Output : N/A
- */
- static void mv643xx_eth_tx_timeout(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- printk(KERN_INFO "%s: TX timeout ", dev->name);
- /* Do the reset outside of interrupt context */
- schedule_work(&mp->tx_timeout_task);
- }
- /*
- * mv643xx_eth_tx_timeout_task
- *
- * Actual routine to reset the adapter when a timeout on Tx has occurred
- */
- static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly)
- {
- struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private,
- tx_timeout_task);
- struct net_device *dev = mp->mii.dev; /* yuck */
- if (!netif_running(dev))
- return;
- netif_stop_queue(dev);
- eth_port_reset(mp->port_num);
- eth_port_start(dev);
- if (mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
- }
- /**
- * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors
- *
- * If force is non-zero, frees uncompleted descriptors as well
- */
- int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- struct eth_tx_desc *desc;
- u32 cmd_sts;
- struct sk_buff *skb;
- unsigned long flags;
- int tx_index;
- dma_addr_t addr;
- int count;
- int released = 0;
- while (mp->tx_desc_count > 0) {
- spin_lock_irqsave(&mp->lock, flags);
- /* tx_desc_count might have changed before acquiring the lock */
- if (mp->tx_desc_count <= 0) {
- spin_unlock_irqrestore(&mp->lock, flags);
- return released;
- }
- tx_index = mp->tx_used_desc_q;
- desc = &mp->p_tx_desc_area[tx_index];
- cmd_sts = desc->cmd_sts;
- if (!force && (cmd_sts & ETH_BUFFER_OWNED_BY_DMA)) {
- spin_unlock_irqrestore(&mp->lock, flags);
- return released;
- }
- mp->tx_used_desc_q = (tx_index + 1) % mp->tx_ring_size;
- mp->tx_desc_count--;
- addr = desc->buf_ptr;
- count = desc->byte_cnt;
- skb = mp->tx_skb[tx_index];
- if (skb)
- mp->tx_skb[tx_index] = NULL;
- if (cmd_sts & ETH_ERROR_SUMMARY) {
- printk("%s: Error in TX\n", dev->name);
- mp->stats.tx_errors++;
- }
- spin_unlock_irqrestore(&mp->lock, flags);
- if (cmd_sts & ETH_TX_FIRST_DESC)
- dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
- else
- dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
- if (skb)
- dev_kfree_skb_irq(skb);
- released = 1;
- }
- return released;
- }
- static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- if (mv643xx_eth_free_tx_descs(dev, 0) &&
- mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
- }
- static void mv643xx_eth_free_all_tx_descs(struct net_device *dev)
- {
- mv643xx_eth_free_tx_descs(dev, 1);
- }
- /*
- * mv643xx_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
- */
- static int mv643xx_eth_receive_queue(struct net_device *dev, int budget)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- struct net_device_stats *stats = &mp->stats;
- unsigned int received_packets = 0;
- struct sk_buff *skb;
- struct pkt_info pkt_info;
- while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) {
- dma_unmap_single(NULL, pkt_info.buf_ptr, ETH_RX_SKB_SIZE,
- DMA_FROM_DEVICE);
- mp->rx_desc_count--;
- received_packets++;
- /*
- * Update statistics.
- * Note byte count includes 4 byte CRC count
- */
- stats->rx_packets++;
- stats->rx_bytes += pkt_info.byte_cnt;
- skb = pkt_info.return_info;
- /*
- * 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++;
- if ((pkt_info.cmd_sts & (ETH_RX_FIRST_DESC |
- ETH_RX_LAST_DESC)) !=
- (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) {
- if (net_ratelimit())
- printk(KERN_ERR
- "%s: Received packet spread "
- "on multiple descriptors\n",
- dev->name);
- }
- if (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)
- stats->rx_errors++;
- dev_kfree_skb_irq(skb);
- } else {
- /*
- * The -4 is for the CRC in the trailer of the
- * received packet
- */
- skb_put(skb, pkt_info.byte_cnt - 4);
- skb->dev = dev;
- if (pkt_info.cmd_sts & ETH_LAYER_4_CHECKSUM_OK) {
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- skb->csum = htons(
- (pkt_info.cmd_sts & 0x0007fff8) >> 3);
- }
- skb->protocol = eth_type_trans(skb, dev);
- #ifdef MV643XX_NAPI
- netif_receive_skb(skb);
- #else
- netif_rx(skb);
- #endif
- }
- dev->last_rx = jiffies;
- }
- mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
- return received_packets;
- }
- /* Set the mv643xx port configuration register for the speed/duplex mode. */
- static void mv643xx_eth_update_pscr(struct net_device *dev,
- struct ethtool_cmd *ecmd)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- int port_num = mp->port_num;
- u32 o_pscr, n_pscr;
- unsigned int queues;
- o_pscr = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
- n_pscr = o_pscr;
- /* clear speed, duplex and rx buffer size fields */
- n_pscr &= ~(MV643XX_ETH_SET_MII_SPEED_TO_100 |
- MV643XX_ETH_SET_GMII_SPEED_TO_1000 |
- MV643XX_ETH_SET_FULL_DUPLEX_MODE |
- MV643XX_ETH_MAX_RX_PACKET_MASK);
- if (ecmd->duplex == DUPLEX_FULL)
- n_pscr |= MV643XX_ETH_SET_FULL_DUPLEX_MODE;
- if (ecmd->speed == SPEED_1000)
- n_pscr |= MV643XX_ETH_SET_GMII_SPEED_TO_1000 |
- MV643XX_ETH_MAX_RX_PACKET_9700BYTE;
- else {
- if (ecmd->speed == SPEED_100)
- n_pscr |= MV643XX_ETH_SET_MII_SPEED_TO_100;
- n_pscr |= MV643XX_ETH_MAX_RX_PACKET_1522BYTE;
- }
- if (n_pscr != o_pscr) {
- if ((o_pscr & MV643XX_ETH_SERIAL_PORT_ENABLE) == 0)
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
- n_pscr);
- else {
- queues = mv643xx_eth_port_disable_tx(port_num);
- o_pscr &= ~MV643XX_ETH_SERIAL_PORT_ENABLE;
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
- o_pscr);
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
- n_pscr);
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
- n_pscr);
- if (queues)
- mv643xx_eth_port_enable_tx(port_num, queues);
- }
- }
- }
- /*
- * mv643xx_eth_int_handler
- *
- * Main interrupt handler for the gigbit ethernet ports
- *
- * Input : irq - irq number (not used)
- * dev_id - a pointer to the required interface's data structure
- * regs - not used
- * Output : N/A
- */
- static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
- {
- struct net_device *dev = (struct net_device *)dev_id;
- struct mv643xx_private *mp = netdev_priv(dev);
- u32 eth_int_cause, eth_int_cause_ext = 0;
- unsigned int port_num = mp->port_num;
- /* Read interrupt cause registers */
- eth_int_cause = mv_read(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num)) &
- ETH_INT_UNMASK_ALL;
- if (eth_int_cause & ETH_INT_CAUSE_EXT) {
- eth_int_cause_ext = mv_read(
- MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num)) &
- ETH_INT_UNMASK_ALL_EXT;
- mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num),
- ~eth_int_cause_ext);
- }
- /* PHY status changed */
- if (eth_int_cause_ext & ETH_INT_CAUSE_PHY) {
- struct ethtool_cmd cmd;
- if (mii_link_ok(&mp->mii)) {
- mii_ethtool_gset(&mp->mii, &cmd);
- mv643xx_eth_update_pscr(dev, &cmd);
- mv643xx_eth_port_enable_tx(port_num,
- ETH_TX_QUEUES_ENABLED);
- if (!netif_carrier_ok(dev)) {
- netif_carrier_on(dev);
- if (mp->tx_ring_size - mp->tx_desc_count >=
- MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
- }
- } else if (netif_carrier_ok(dev)) {
- netif_stop_queue(dev);
- netif_carrier_off(dev);
- }
- }
- #ifdef MV643XX_NAPI
- if (eth_int_cause & ETH_INT_CAUSE_RX) {
- /* schedule the NAPI poll routine to maintain port */
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
- ETH_INT_MASK_ALL);
- /* wait for previous write to complete */
- mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
- netif_rx_schedule(dev);
- }
- #else
- if (eth_int_cause & ETH_INT_CAUSE_RX)
- mv643xx_eth_receive_queue(dev, INT_MAX);
- #endif
- if (eth_int_cause_ext & ETH_INT_CAUSE_TX)
- mv643xx_eth_free_completed_tx_descs(dev);
- /*
- * If no real interrupt occured, exit.
- * This can happen when using gigE interrupt coalescing mechanism.
- */
- if ((eth_int_cause == 0x0) && (eth_int_cause_ext == 0x0))
- return IRQ_NONE;
- return IRQ_HANDLED;
- }
- #ifdef MV643XX_COAL
- /*
- * 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:
- * unsigned int 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.
- *
- */
- static unsigned int eth_port_set_rx_coal(unsigned int eth_port_num,
- unsigned int t_clk, unsigned int delay)
- {
- unsigned int coal = ((t_clk / 1000000) * delay) / 64;
- /* Set RX Coalescing mechanism */
- mv_write(MV643XX_ETH_SDMA_CONFIG_REG(eth_port_num),
- ((coal & 0x3fff) << 8) |
- (mv_read(MV643XX_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:
- * unsigned int 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.
- *
- */
- static unsigned int eth_port_set_tx_coal(unsigned int eth_port_num,
- unsigned int t_clk, unsigned int delay)
- {
- unsigned int coal;
- coal = ((t_clk / 1000000) * delay) / 64;
- /* Set TX Coalescing mechanism */
- mv_write(MV643XX_ETH_TX_FIFO_URGENT_THRESHOLD_REG(eth_port_num),
- coal << 4);
- return coal;
- }
- /*
- * 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:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- *
- * OUTPUT:
- * The routine updates the Ethernet port control struct with information
- * regarding the Rx descriptors and buffers.
- *
- * RETURN:
- * None.
- */
- static void ether_init_rx_desc_ring(struct mv643xx_private *mp)
- {
- volatile struct eth_rx_desc *p_rx_desc;
- int rx_desc_num = mp->rx_ring_size;
- int i;
- /* initialize the next_desc_ptr links in the Rx descriptors ring */
- p_rx_desc = (struct eth_rx_desc *)mp->p_rx_desc_area;
- for (i = 0; i < rx_desc_num; i++) {
- p_rx_desc[i].next_desc_ptr = mp->rx_desc_dma +
- ((i + 1) % rx_desc_num) * sizeof(struct eth_rx_desc);
- }
- /* Save Rx desc pointer to driver struct. */
- mp->rx_curr_desc_q = 0;
- mp->rx_used_desc_q = 0;
- mp->rx_desc_area_size = rx_desc_num * sizeof(struct eth_rx_desc);
- }
- /*
- * 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:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- *
- * OUTPUT:
- * The routine updates the Ethernet port control struct with information
- * regarding the Tx descriptors and buffers.
- *
- * RETURN:
- * None.
- */
- static void ether_init_tx_desc_ring(struct mv643xx_private *mp)
- {
- int tx_desc_num = mp->tx_ring_size;
- struct eth_tx_desc *p_tx_desc;
- int i;
- /* Initialize the next_desc_ptr links in the Tx descriptors ring */
- p_tx_desc = (struct eth_tx_desc *)mp->p_tx_desc_area;
- for (i = 0; i < tx_desc_num; i++) {
- p_tx_desc[i].next_desc_ptr = mp->tx_desc_dma +
- ((i + 1) % tx_desc_num) * sizeof(struct eth_tx_desc);
- }
- mp->tx_curr_desc_q = 0;
- mp->tx_used_desc_q = 0;
- mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc);
- }
- static int mv643xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- int err;
- spin_lock_irq(&mp->lock);
- err = mii_ethtool_sset(&mp->mii, cmd);
- spin_unlock_irq(&mp->lock);
- return err;
- }
- static int mv643xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- int err;
- spin_lock_irq(&mp->lock);
- err = mii_ethtool_gset(&mp->mii, cmd);
- spin_unlock_irq(&mp->lock);
- /* The PHY may support 1000baseT_Half, but the mv643xx does not */
- cmd->supported &= ~SUPPORTED_1000baseT_Half;
- cmd->advertising &= ~ADVERTISED_1000baseT_Half;
- return err;
- }
- /*
- * mv643xx_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
- *
- * Output : zero of success , nonzero if fails.
- */
- static int mv643xx_eth_open(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- unsigned int size;
- int err;
- /* Clear any pending ethernet port interrupts */
- mv_write(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num), 0);
- mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
- /* wait for previous write to complete */
- mv_read (MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num));
- err = request_irq(dev->irq, mv643xx_eth_int_handler,
- IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev);
- if (err) {
- printk(KERN_ERR "Can not assign IRQ number to MV643XX_eth%d\n",
- port_num);
- return -EAGAIN;
- }
- eth_port_init(mp);
- memset(&mp->timeout, 0, sizeof(struct timer_list));
- mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper;
- mp->timeout.data = (unsigned long)dev;
- /* Allocate RX and TX skb rings */
- mp->rx_skb = kmalloc(sizeof(*mp->rx_skb) * mp->rx_ring_size,
- GFP_KERNEL);
- if (!mp->rx_skb) {
- printk(KERN_ERR "%s: Cannot allocate Rx skb ring\n", dev->name);
- err = -ENOMEM;
- goto out_free_irq;
- }
- mp->tx_skb = kmalloc(sizeof(*mp->tx_skb) * mp->tx_ring_size,
- GFP_KERNEL);
- if (!mp->tx_skb) {
- printk(KERN_ERR "%s: Cannot allocate Tx skb ring\n", dev->name);
- err = -ENOMEM;
- goto out_free_rx_skb;
- }
- /* Allocate TX ring */
- mp->tx_desc_count = 0;
- size = mp->tx_ring_size * sizeof(struct eth_tx_desc);
- mp->tx_desc_area_size = size;
- if (mp->tx_sram_size) {
- mp->p_tx_desc_area = ioremap(mp->tx_sram_addr,
- mp->tx_sram_size);
- mp->tx_desc_dma = mp->tx_sram_addr;
- } else
- mp->p_tx_desc_area = dma_alloc_coherent(NULL, size,
- &mp->tx_desc_dma,
- GFP_KERNEL);
- if (!mp->p_tx_desc_area) {
- printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n",
- dev->name, size);
- err = -ENOMEM;
- goto out_free_tx_skb;
- }
- BUG_ON((u32) mp->p_tx_desc_area & 0xf); /* check 16-byte alignment */
- memset((void *)mp->p_tx_desc_area, 0, mp->tx_desc_area_size);
- ether_init_tx_desc_ring(mp);
- /* Allocate RX ring */
- mp->rx_desc_count = 0;
- size = mp->rx_ring_size * sizeof(struct eth_rx_desc);
- mp->rx_desc_area_size = size;
- if (mp->rx_sram_size) {
- mp->p_rx_desc_area = ioremap(mp->rx_sram_addr,
- mp->rx_sram_size);
- mp->rx_desc_dma = mp->rx_sram_addr;
- } else
- mp->p_rx_desc_area = dma_alloc_coherent(NULL, size,
- &mp->rx_desc_dma,
- GFP_KERNEL);
- if (!mp->p_rx_desc_area) {
- printk(KERN_ERR "%s: Cannot allocate Rx ring (size %d bytes)\n",
- dev->name, size);
- printk(KERN_ERR "%s: Freeing previously allocated TX queues...",
- dev->name);
- if (mp->rx_sram_size)
- iounmap(mp->p_tx_desc_area);
- else
- dma_free_coherent(NULL, mp->tx_desc_area_size,
- mp->p_tx_desc_area, mp->tx_desc_dma);
- err = -ENOMEM;
- goto out_free_tx_skb;
- }
- memset((void *)mp->p_rx_desc_area, 0, size);
- ether_init_rx_desc_ring(mp);
- mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
- eth_port_start(dev);
- /* Interrupt Coalescing */
- #ifdef MV643XX_COAL
- mp->rx_int_coal =
- eth_port_set_rx_coal(port_num, 133000000, MV643XX_RX_COAL);
- #endif
- mp->tx_int_coal =
- eth_port_set_tx_coal(port_num, 133000000, MV643XX_TX_COAL);
- /* Unmask phy and link status changes interrupts */
- mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num),
- ETH_INT_UNMASK_ALL_EXT);
- /* Unmask RX buffer and TX end interrupt */
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
- return 0;
- out_free_tx_skb:
- kfree(mp->tx_skb);
- out_free_rx_skb:
- kfree(mp->rx_skb);
- out_free_irq:
- free_irq(dev->irq, dev);
- return err;
- }
- static void mv643xx_eth_free_tx_rings(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- /* Stop Tx Queues */
- mv643xx_eth_port_disable_tx(mp->port_num);
- /* Free outstanding skb's on TX ring */
- mv643xx_eth_free_all_tx_descs(dev);
- BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q);
- /* Free TX ring */
- if (mp->tx_sram_size)
- iounmap(mp->p_tx_desc_area);
- else
- dma_free_coherent(NULL, mp->tx_desc_area_size,
- mp->p_tx_desc_area, mp->tx_desc_dma);
- }
- static void mv643xx_eth_free_rx_rings(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- int curr;
- /* Stop RX Queues */
- mv643xx_eth_port_disable_rx(port_num);
- /* Free preallocated skb's on RX rings */
- for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) {
- if (mp->rx_skb[curr]) {
- dev_kfree_skb(mp->rx_skb[curr]);
- mp->rx_desc_count--;
- }
- }
- if (mp->rx_desc_count)
- printk(KERN_ERR
- "%s: Error in freeing Rx Ring. %d skb's still"
- " stuck in RX Ring - ignoring them\n", dev->name,
- mp->rx_desc_count);
- /* Free RX ring */
- if (mp->rx_sram_size)
- iounmap(mp->p_rx_desc_area);
- else
- dma_free_coherent(NULL, mp->rx_desc_area_size,
- mp->p_rx_desc_area, mp->rx_desc_dma);
- }
- /*
- * mv643xx_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
- */
- static int mv643xx_eth_stop(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- /* Mask all interrupts on ethernet port */
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
- /* wait for previous write to complete */
- mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
- #ifdef MV643XX_NAPI
- netif_poll_disable(dev);
- #endif
- netif_carrier_off(dev);
- netif_stop_queue(dev);
- eth_port_reset(mp->port_num);
- mv643xx_eth_free_tx_rings(dev);
- mv643xx_eth_free_rx_rings(dev);
- #ifdef MV643XX_NAPI
- netif_poll_enable(dev);
- #endif
- free_irq(dev->irq, dev);
- return 0;
- }
- #ifdef MV643XX_NAPI
- /*
- * mv643xx_poll
- *
- * This function is used in case of NAPI
- */
- static int mv643xx_poll(struct net_device *dev, int *budget)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- int done = 1, orig_budget, work_done;
- unsigned int port_num = mp->port_num;
- #ifdef MV643XX_TX_FAST_REFILL
- if (++mp->tx_clean_threshold > 5) {
- mv643xx_eth_free_completed_tx_descs(dev);
- mp->tx_clean_threshold = 0;
- }
- #endif
- if ((mv_read(MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_0(port_num)))
- != (u32) mp->rx_used_desc_q) {
- orig_budget = *budget;
- if (orig_budget > dev->quota)
- orig_budget = dev->quota;
- work_done = mv643xx_eth_receive_queue(dev, orig_budget);
- *budget -= work_done;
- dev->quota -= work_done;
- if (work_done >= orig_budget)
- done = 0;
- }
- if (done) {
- netif_rx_complete(dev);
- mv_write(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num), 0);
- mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
- ETH_INT_UNMASK_ALL);
- }
- return done ? 0 : 1;
- }
- #endif
- /**
- * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments
- *
- * Hardware can't handle unaligned fragments smaller than 9 bytes.
- * This helper function detects that case.
- */
- static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
- {
- unsigned int frag;
- skb_frag_t *fragp;
- for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- fragp = &skb_shinfo(skb)->frags[frag];
- if (fragp->size <= 8 && fragp->page_offset & 0x7)
- return 1;
- }
- return 0;
- }
- /**
- * eth_alloc_tx_desc_index - return the index of the next available tx desc
- */
- static int eth_alloc_tx_desc_index(struct mv643xx_private *mp)
- {
- int tx_desc_curr;
- BUG_ON(mp->tx_desc_count >= mp->tx_ring_size);
- tx_desc_curr = mp->tx_curr_desc_q;
- mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size;
- BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q);
- return tx_desc_curr;
- }
- /**
- * eth_tx_fill_frag_descs - fill tx hw descriptors for an skb's fragments.
- *
- * Ensure the data for each fragment to be transmitted is mapped properly,
- * then fill in descriptors in the tx hw queue.
- */
- static void eth_tx_fill_frag_descs(struct mv643xx_private *mp,
- struct sk_buff *skb)
- {
- int frag;
- int tx_index;
- struct eth_tx_desc *desc;
- for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
- tx_index = eth_alloc_tx_desc_index(mp);
- desc = &mp->p_tx_desc_area[tx_index];
- desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA;
- /* Last Frag enables interrupt and frees the skb */
- if (frag == (skb_shinfo(skb)->nr_frags - 1)) {
- desc->cmd_sts |= ETH_ZERO_PADDING |
- ETH_TX_LAST_DESC |
- ETH_TX_ENABLE_INTERRUPT;
- mp->tx_skb[tx_index] = skb;
- } else
- mp->tx_skb[tx_index] = NULL;
- desc = &mp->p_tx_desc_area[tx_index];
- desc->l4i_chk = 0;
- desc->byte_cnt = this_frag->size;
- desc->buf_ptr = dma_map_page(NULL, this_frag->page,
- this_frag->page_offset,
- this_frag->size,
- DMA_TO_DEVICE);
- }
- }
- /**
- * eth_tx_submit_descs_for_skb - submit data from an skb to the tx hw
- *
- * Ensure the data for an skb to be transmitted is mapped properly,
- * then fill in descriptors in the tx hw queue and start the hardware.
- */
- static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp,
- struct sk_buff *skb)
- {
- int tx_index;
- struct eth_tx_desc *desc;
- u32 cmd_sts;
- int length;
- int nr_frags = skb_shinfo(skb)->nr_frags;
- cmd_sts = ETH_TX_FIRST_DESC | ETH_GEN_CRC | ETH_BUFFER_OWNED_BY_DMA;
- tx_index = eth_alloc_tx_desc_index(mp);
- desc = &mp->p_tx_desc_area[tx_index];
- if (nr_frags) {
- eth_tx_fill_frag_descs(mp, skb);
- length = skb_headlen(skb);
- mp->tx_skb[tx_index] = NULL;
- } else {
- cmd_sts |= ETH_ZERO_PADDING |
- ETH_TX_LAST_DESC |
- ETH_TX_ENABLE_INTERRUPT;
- length = skb->len;
- mp->tx_skb[tx_index] = skb;
- }
- desc->byte_cnt = length;
- desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- BUG_ON(skb->protocol != ETH_P_IP);
- cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM |
- ETH_GEN_IP_V_4_CHECKSUM |
- skb->nh.iph->ihl << ETH_TX_IHL_SHIFT;
- switch (skb->nh.iph->protocol) {
- case IPPROTO_UDP:
- cmd_sts |= ETH_UDP_FRAME;
- desc->l4i_chk = skb->h.uh->check;
- break;
- case IPPROTO_TCP:
- desc->l4i_chk = skb->h.th->check;
- break;
- default:
- BUG();
- }
- } else {
- /* Errata BTS #50, IHL must be 5 if no HW checksum */
- cmd_sts |= 5 << ETH_TX_IHL_SHIFT;
- desc->l4i_chk = 0;
- }
- /* ensure all other descriptors are written before first cmd_sts */
- wmb();
- desc->cmd_sts = cmd_sts;
- /* ensure all descriptors are written before poking hardware */
- wmb();
- mv643xx_eth_port_enable_tx(mp->port_num, ETH_TX_QUEUES_ENABLED);
- mp->tx_desc_count += nr_frags + 1;
- }
- /**
- * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission
- *
- */
- static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- struct net_device_stats *stats = &mp->stats;
- unsigned long flags;
- BUG_ON(netif_queue_stopped(dev));
- BUG_ON(skb == NULL);
- if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) {
- printk(KERN_ERR "%s: transmit with queue full\n", dev->name);
- netif_stop_queue(dev);
- return 1;
- }
- if (has_tiny_unaligned_frags(skb)) {
- if (__skb_linearize(skb)) {
- stats->tx_dropped++;
- printk(KERN_DEBUG "%s: failed to linearize tiny "
- "unaligned fragment\n", dev->name);
- return 1;
- }
- }
- spin_lock_irqsave(&mp->lock, flags);
- eth_tx_submit_descs_for_skb(mp, skb);
- stats->tx_bytes = skb->len;
- stats->tx_packets++;
- dev->trans_start = jiffies;
- if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB)
- netif_stop_queue(dev);
- spin_unlock_irqrestore(&mp->lock, flags);
- return 0; /* success */
- }
- /*
- * mv643xx_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 *mv643xx_eth_get_stats(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- return &mp->stats;
- }
- #ifdef CONFIG_NET_POLL_CONTROLLER
- static void mv643xx_netpoll(struct net_device *netdev)
- {
- struct mv643xx_private *mp = netdev_priv(netdev);
- int port_num = mp->port_num;
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
- /* wait for previous write to complete */
- mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
- mv643xx_eth_int_handler(netdev->irq, netdev);
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
- }
- #endif
- static void mv643xx_init_ethtool_cmd(struct net_device *dev, int phy_address,
- int speed, int duplex,
- struct ethtool_cmd *cmd)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- memset(cmd, 0, sizeof(*cmd));
- cmd->port = PORT_MII;
- cmd->transceiver = XCVR_INTERNAL;
- cmd->phy_address = phy_address;
- if (speed == 0) {
- cmd->autoneg = AUTONEG_ENABLE;
- /* mii lib checks, but doesn't use speed on AUTONEG_ENABLE */
- cmd->speed = SPEED_100;
- cmd->advertising = ADVERTISED_10baseT_Half |
- ADVERTISED_10baseT_Full |
- ADVERTISED_100baseT_Half |
- ADVERTISED_100baseT_Full;
- if (mp->mii.supports_gmii)
- cmd->advertising |= ADVERTISED_1000baseT_Full;
- } else {
- cmd->autoneg = AUTONEG_DISABLE;
- cmd->speed = speed;
- cmd->duplex = duplex;
- }
- }
- /*/
- * mv643xx_eth_probe
- *
- * First function called after registering the network device.
- * It's purpose is to initialize the device as an ethernet device,
- * fill the ethernet device structure with pointers * to functions,
- * and set the MAC address of the interface
- *
- * Input : struct device *
- * Output : -ENOMEM if failed , 0 if success
- */
- static int mv643xx_eth_probe(struct platform_device *pdev)
- {
- struct mv643xx_eth_platform_data *pd;
- int port_num;
- struct mv643xx_private *mp;
- struct net_device *dev;
- u8 *p;
- struct resource *res;
- int err;
- struct ethtool_cmd cmd;
- int duplex = DUPLEX_HALF;
- int speed = 0; /* default to auto-negotiation */
- pd = pdev->dev.platform_data;
- if (pd == NULL) {
- printk(KERN_ERR "No mv643xx_eth_platform_data\n");
- return -ENODEV;
- }
- dev = alloc_etherdev(sizeof(struct mv643xx_private));
- if (!dev)
- return -ENOMEM;
- platform_set_drvdata(pdev, dev);
- mp = netdev_priv(dev);
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- BUG_ON(!res);
- dev->irq = res->start;
- dev->open = mv643xx_eth_open;
- dev->stop = mv643xx_eth_stop;
- dev->hard_start_xmit = mv643xx_eth_start_xmit;
- dev->get_stats = mv643xx_eth_get_stats;
- dev->set_mac_address = mv643xx_eth_set_mac_address;
- dev->set_multicast_list = mv643xx_eth_set_rx_mode;
- /* No need to Tx Timeout */
- dev->tx_timeout = mv643xx_eth_tx_timeout;
- #ifdef MV643XX_NAPI
- dev->poll = mv643xx_poll;
- dev->weight = 64;
- #endif
- #ifdef CONFIG_NET_POLL_CONTROLLER
- dev->poll_controller = mv643xx_netpoll;
- #endif
- dev->watchdog_timeo = 2 * HZ;
- dev->tx_queue_len = mp->tx_ring_size;
- dev->base_addr = 0;
- dev->change_mtu = mv643xx_eth_change_mtu;
- dev->do_ioctl = mv643xx_eth_do_ioctl;
- SET_ETHTOOL_OPS(dev, &mv643xx_ethtool_ops);
- #ifdef MV643XX_CHECKSUM_OFFLOAD_TX
- #ifdef MAX_SKB_FRAGS
- /*
- * Zero copy can only work if we use Discovery II memory. Else, we will
- * have to map the buffers to ISA memory which is only 16 MB
- */
- dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
- #endif
- #endif
- /* Configure the timeout task */
- INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task);
- spin_lock_init(&mp->lock);
- port_num = mp->port_num = pd->port_number;
- /* set default config values */
- eth_port_uc_addr_get(dev, dev->dev_addr);
- mp->rx_ring_size = MV643XX_ETH_PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
- mp->tx_ring_size = MV643XX_ETH_PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
- if (is_valid_ether_addr(pd->mac_addr))
- memcpy(dev->dev_addr, pd->mac_addr, 6);
- if (pd->phy_addr || pd->force_phy_addr)
- ethernet_phy_set(port_num, pd->phy_addr);
- if (pd->rx_queue_size)
- mp->rx_ring_size = pd->rx_queue_size;
- if (pd->tx_queue_size)
- mp->tx_ring_size = pd->tx_queue_size;
- if (pd->tx_sram_size) {
- mp->tx_sram_size = pd->tx_sram_size;
- mp->tx_sram_addr = pd->tx_sram_addr;
- }
- if (pd->rx_sram_size) {
- mp->rx_sram_size = pd->rx_sram_size;
- mp->rx_sram_addr = pd->rx_sram_addr;
- }
- duplex = pd->duplex;
- speed = pd->speed;
- /* Hook up MII support for ethtool */
- mp->mii.dev = dev;
- mp->mii.mdio_read = mv643xx_mdio_read;
- mp->mii.mdio_write = mv643xx_mdio_write;
- mp->mii.phy_id = ethernet_phy_get(port_num);
- mp->mii.phy_id_mask = 0x3f;
- mp->mii.reg_num_mask = 0x1f;
- err = ethernet_phy_detect(port_num);
- if (err) {
- pr_debug("MV643xx ethernet port %d: "
- "No PHY detected at addr %d\n",
- port_num, ethernet_phy_get(port_num));
- goto out;
- }
- ethernet_phy_reset(port_num);
- mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
- mv643xx_init_ethtool_cmd(dev, mp->mii.phy_id, speed, duplex, &cmd);
- mv643xx_eth_update_pscr(dev, &cmd);
- mv643xx_set_settings(dev, &cmd);
- SET_MODULE_OWNER(dev);
- SET_NETDEV_DEV(dev, &pdev->dev);
- err = register_netdev(dev);
- if (err)
- goto out;
- p = dev->dev_addr;
- printk(KERN_NOTICE
- "%s: port %d with MAC address %02x:%02x:%02x:%02x:%02x:%02x\n",
- dev->name, port_num, p[0], p[1], p[2], p[3], p[4], p[5]);
- if (dev->features & NETIF_F_SG)
- printk(KERN_NOTICE "%s: Scatter Gather Enabled\n", dev->name);
- if (dev->features & NETIF_F_IP_CSUM)
- printk(KERN_NOTICE "%s: TX TCP/IP Checksumming Supported\n",
- dev->name);
- #ifdef MV643XX_CHECKSUM_OFFLOAD_TX
- printk(KERN_NOTICE "%s: RX TCP/UDP Checksum Offload ON \n", dev->name);
- #endif
- #ifdef MV643XX_COAL
- printk(KERN_NOTICE "%s: TX and RX Interrupt Coalescing ON \n",
- dev->name);
- #endif
- #ifdef MV643XX_NAPI
- printk(KERN_NOTICE "%s: RX NAPI Enabled \n", dev->name);
- #endif
- if (mp->tx_sram_size > 0)
- printk(KERN_NOTICE "%s: Using SRAM\n", dev->name);
- return 0;
- out:
- free_netdev(dev);
- return err;
- }
- static int mv643xx_eth_remove(struct platform_device *pdev)
- {
- struct net_device *dev = platform_get_drvdata(pdev);
- unregister_netdev(dev);
- flush_scheduled_work();
- free_netdev(dev);
- platform_set_drvdata(pdev, NULL);
- return 0;
- }
- static int mv643xx_eth_shared_probe(struct platform_device *pdev)
- {
- struct resource *res;
- printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL)
- return -ENODEV;
- mv643xx_eth_shared_base = ioremap(res->start,
- MV643XX_ETH_SHARED_REGS_SIZE);
- if (mv643xx_eth_shared_base == NULL)
- return -ENOMEM;
- return 0;
- }
- static int mv643xx_eth_shared_remove(struct platform_device *pdev)
- {
- iounmap(mv643xx_eth_shared_base);
- mv643xx_eth_shared_base = NULL;
- return 0;
- }
- static void mv643xx_eth_shutdown(struct platform_device *pdev)
- {
- struct net_device *dev = platform_get_drvdata(pdev);
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- /* Mask all interrupts on ethernet port */
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), 0);
- mv_read (MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
- eth_port_reset(port_num);
- }
- static struct platform_driver mv643xx_eth_driver = {
- .probe = mv643xx_eth_probe,
- .remove = mv643xx_eth_remove,
- .shutdown = mv643xx_eth_shutdown,
- .driver = {
- .name = MV643XX_ETH_NAME,
- },
- };
- static struct platform_driver mv643xx_eth_shared_driver = {
- .probe = mv643xx_eth_shared_probe,
- .remove = mv643xx_eth_shared_remove,
- .driver = {
- .name = MV643XX_ETH_SHARED_NAME,
- },
- };
- /*
- * mv643xx_init_module
- *
- * Registers the network drivers into the Linux kernel
- *
- * Input : N/A
- *
- * Output : N/A
- */
- static int __init mv643xx_init_module(void)
- {
- int rc;
- rc = platform_driver_register(&mv643xx_eth_shared_driver);
- if (!rc) {
- rc = platform_driver_register(&mv643xx_eth_driver);
- if (rc)
- platform_driver_unregister(&mv643xx_eth_shared_driver);
- }
- return rc;
- }
- /*
- * mv643xx_cleanup_module
- *
- * Registers the network drivers into the Linux kernel
- *
- * Input : N/A
- *
- * Output : N/A
- */
- static void __exit mv643xx_cleanup_module(void)
- {
- platform_driver_unregister(&mv643xx_eth_driver);
- platform_driver_unregister(&mv643xx_eth_shared_driver);
- }
- module_init(mv643xx_init_module);
- module_exit(mv643xx_cleanup_module);
- MODULE_LICENSE("GPL");
- MODULE_AUTHOR( "Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani"
- " and Dale Farnsworth");
- MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
- /*
- * The second part is the low level driver of the gigE ethernet ports.
- */
- /*
- * 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
- * struct mv643xx_private.
- * 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 the
- * mv643xx_private struct.
- * User information regarding port configuration has to be set
- * prior to calling the port initialization routine.
- *
- * 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 mv643xx_private 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 mv643xx_private struct to
- * initialize the various port registers.
- *
- * Data flow:
- * All packet references to/from the driver are done using
- * struct pkt_info.
- * 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.
- *
- * Prior to calling the initialization routine eth_port_init() the user
- * must set the following fields under mv643xx_private struct:
- * port_num User Ethernet port number.
- * 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.
- *
- * This driver data flow is done using the struct pkt_info 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.
- */
- /* PHY routines */
- static int ethernet_phy_get(unsigned int eth_port_num);
- static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr);
- /* Ethernet Port routines */
- static void eth_port_set_filter_table_entry(int table, unsigned char entry);
- /*
- * 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.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet port control struct
- *
- * OUTPUT:
- * See description.
- *
- * RETURN:
- * None.
- */
- static void eth_port_init(struct mv643xx_private *mp)
- {
- mp->rx_resource_err = 0;
- eth_port_reset(mp->port_num);
- eth_port_init_mac_tables(mp->port_num);
- }
- /*
- * 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:
- * dev - a pointer to the required interface
- *
- * OUTPUT:
- * Ethernet port is ready to receive and transmit.
- *
- * RETURN:
- * None.
- */
- static void eth_port_start(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- int tx_curr_desc, rx_curr_desc;
- u32 pscr;
- struct ethtool_cmd ethtool_cmd;
- /* Assignment of Tx CTRP of given queue */
- tx_curr_desc = mp->tx_curr_desc_q;
- mv_write(MV643XX_ETH_TX_CURRENT_QUEUE_DESC_PTR_0(port_num),
- (u32)((struct eth_tx_desc *)mp->tx_desc_dma + tx_curr_desc));
- /* Assignment of Rx CRDP of given queue */
- rx_curr_desc = mp->rx_curr_desc_q;
- mv_write(MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_0(port_num),
- (u32)((struct eth_rx_desc *)mp->rx_desc_dma + rx_curr_desc));
- /* Add the assigned Ethernet address to the port's address table */
- eth_port_uc_addr_set(port_num, dev->dev_addr);
- /* Assign port configuration and command. */
- mv_write(MV643XX_ETH_PORT_CONFIG_REG(port_num),
- MV643XX_ETH_PORT_CONFIG_DEFAULT_VALUE);
- mv_write(MV643XX_ETH_PORT_CONFIG_EXTEND_REG(port_num),
- MV643XX_ETH_PORT_CONFIG_EXTEND_DEFAULT_VALUE);
- pscr = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
- pscr &= ~(MV643XX_ETH_SERIAL_PORT_ENABLE | MV643XX_ETH_FORCE_LINK_PASS);
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
- pscr |= MV643XX_ETH_DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
- MV643XX_ETH_DISABLE_AUTO_NEG_SPEED_GMII |
- MV643XX_ETH_DISABLE_AUTO_NEG_FOR_DUPLX |
- MV643XX_ETH_DO_NOT_FORCE_LINK_FAIL |
- MV643XX_ETH_SERIAL_PORT_CONTROL_RESERVED;
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
- pscr |= MV643XX_ETH_SERIAL_PORT_ENABLE;
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
- /* Assign port SDMA configuration */
- mv_write(MV643XX_ETH_SDMA_CONFIG_REG(port_num),
- MV643XX_ETH_PORT_SDMA_CONFIG_DEFAULT_VALUE);
- /* Enable port Rx. */
- mv643xx_eth_port_enable_rx(port_num, ETH_RX_QUEUES_ENABLED);
- /* Disable port bandwidth limits by clearing MTU register */
- mv_write(MV643XX_ETH_MAXIMUM_TRANSMIT_UNIT(port_num), 0);
- /* save phy settings across reset */
- mv643xx_get_settings(dev, ðtool_cmd);
- ethernet_phy_reset(mp->port_num);
- mv643xx_set_settings(dev, ðtool_cmd);
- }
- /*
- * eth_port_uc_addr_set - This function Set the port Unicast address.
- *
- * DESCRIPTION:
- * This function Set the port Ethernet MAC address.
- *
- * INPUT:
- * unsigned int eth_port_num Port number.
- * char * p_addr Address to be set
- *
- * OUTPUT:
- * Set MAC address low and high registers. also calls
- * eth_port_set_filter_table_entry() to set the unicast
- * table with the proper information.
- *
- * RETURN:
- * N/A.
- *
- */
- static void eth_port_uc_addr_set(unsigned int eth_port_num,
- unsigned char *p_addr)
- {
- unsigned int mac_h;
- unsigned int mac_l;
- int table;
- 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_write(MV643XX_ETH_MAC_ADDR_LOW(eth_port_num), mac_l);
- mv_write(MV643XX_ETH_MAC_ADDR_HIGH(eth_port_num), mac_h);
- /* Accept frames of this address */
- table = MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE(eth_port_num);
- eth_port_set_filter_table_entry(table, p_addr[5] & 0x0f);
- }
- /*
- * eth_port_uc_addr_get - This function retrieves the port Unicast address
- * (MAC address) from the ethernet hw registers.
- *
- * DESCRIPTION:
- * This function retrieves the port Ethernet MAC address.
- *
- * INPUT:
- * unsigned int eth_port_num Port number.
- * char *MacAddr pointer where the MAC address is stored
- *
- * OUTPUT:
- * Copy the MAC address to the location pointed to by MacAddr
- *
- * RETURN:
- * N/A.
- *
- */
- static void eth_port_uc_addr_get(struct net_device *dev, unsigned char *p_addr)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int mac_h;
- unsigned int mac_l;
- mac_h = mv_read(MV643XX_ETH_MAC_ADDR_HIGH(mp->port_num));
- mac_l = mv_read(MV643XX_ETH_MAC_ADDR_LOW(mp->port_num));
- p_addr[0] = (mac_h >> 24) & 0xff;
- p_addr[1] = (mac_h >> 16) & 0xff;
- p_addr[2] = (mac_h >> 8) & 0xff;
- p_addr[3] = mac_h & 0xff;
- p_addr[4] = (mac_l >> 8) & 0xff;
- p_addr[5] = mac_l & 0xff;
- }
- /*
- * The entries in each table are indexed by a hash of a packet's MAC
- * address. One bit in each entry determines whether the packet is
- * accepted. There are 4 entries (each 8 bits wide) in each register
- * of the table. The bits in each entry are defined as follows:
- * 0 Accept=1, Drop=0
- * 3-1 Queue (ETH_Q0=0)
- * 7-4 Reserved = 0;
- */
- static void eth_port_set_filter_table_entry(int table, unsigned char entry)
- {
- unsigned int table_reg;
- unsigned int tbl_offset;
- unsigned int reg_offset;
- tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */
- reg_offset = entry % 4; /* Entry offset within the register */
- /* Set "accepts frame bit" at specified table entry */
- table_reg = mv_read(table + tbl_offset);
- table_reg |= 0x01 << (8 * reg_offset);
- mv_write(table + tbl_offset, table_reg);
- }
- /*
- * eth_port_mc_addr - Multicast address settings.
- *
- * 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.
- * 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. This function calculates the CRC-8bit value.
- * In either case, eth_port_set_filter_table_entry() is then called
- * to set to set the actual table entry.
- */
- static void eth_port_mc_addr(unsigned int eth_port_num, unsigned char *p_addr)
- {
- unsigned int mac_h;
- unsigned int mac_l;
- unsigned char crc_result = 0;
- int table;
- 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)) {
- table = MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
- (eth_port_num);
- eth_port_set_filter_table_entry(table, p_addr[5]);
- return;
- }
- /* 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);
- table = MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num);
- eth_port_set_filter_table_entry(table, crc_result);
- }
- /*
- * Set the entire multicast list based on dev->mc_list.
- */
- static void eth_port_set_multicast_list(struct net_device *dev)
- {
- struct dev_mc_list *mc_list;
- int i;
- int table_index;
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int eth_port_num = mp->port_num;
- /* If the device is in promiscuous mode or in all multicast mode,
- * we will fully populate both multicast tables with accept.
- * This is guaranteed to yield a match on all multicast addresses...
- */
- if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI)) {
- for (table_index = 0; table_index <= 0xFC; table_index += 4) {
- /* Set all entries in DA filter special multicast
- * table (Ex_dFSMT)
- * Set for ETH_Q0 for now
- * Bits
- * 0 Accept=1, Drop=0
- * 3-1 Queue ETH_Q0=0
- * 7-4 Reserved = 0;
- */
- mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
- /* Set all entries in DA filter other multicast
- * table (Ex_dFOMT)
- * Set for ETH_Q0 for now
- * Bits
- * 0 Accept=1, Drop=0
- * 3-1 Queue ETH_Q0=0
- * 7-4 Reserved = 0;
- */
- mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
- }
- return;
- }
- /* We will clear out multicast tables every time we get the list.
- * Then add the entire new list...
- */
- for (table_index = 0; table_index <= 0xFC; table_index += 4) {
- /* Clear DA filter special multicast table (Ex_dFSMT) */
- mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index, 0);
- /* Clear DA filter other multicast table (Ex_dFOMT) */
- mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index, 0);
- }
- /* Get pointer to net_device multicast list and add each one... */
- for (i = 0, mc_list = dev->mc_list;
- (i < 256) && (mc_list != NULL) && (i < dev->mc_count);
- i++, mc_list = mc_list->next)
- if (mc_list->dmi_addrlen == 6)
- eth_port_mc_addr(eth_port_num, mc_list->dmi_addr);
- }
- /*
- * 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:
- * unsigned int eth_port_num Ethernet Port number.
- *
- * OUTPUT:
- * Multicast and Unicast packets are rejected.
- *
- * RETURN:
- * None.
- */
- static void eth_port_init_mac_tables(unsigned int eth_port_num)
- {
- int table_index;
- /* Clear DA filter unicast table (Ex_dFUT) */
- for (table_index = 0; table_index <= 0xC; table_index += 4)
- mv_write(MV643XX_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_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index, 0);
- /* Clear DA filter other multicast table (Ex_dFOMT) */
- mv_write(MV643XX_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:
- * unsigned int eth_port_num Ethernet Port number.
- *
- * OUTPUT:
- * After reading all MIB counters, the counters resets.
- *
- * RETURN:
- * MIB counter value.
- *
- */
- static void eth_clear_mib_counters(unsigned int eth_port_num)
- {
- int i;
- /* Perform dummy reads from MIB counters */
- for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION;
- i += 4)
- mv_read(MV643XX_ETH_MIB_COUNTERS_BASE(eth_port_num) + i);
- }
- static inline u32 read_mib(struct mv643xx_private *mp, int offset)
- {
- return mv_read(MV643XX_ETH_MIB_COUNTERS_BASE(mp->port_num) + offset);
- }
- static void eth_update_mib_counters(struct mv643xx_private *mp)
- {
- struct mv643xx_mib_counters *p = &mp->mib_counters;
- int offset;
- p->good_octets_received +=
- read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_LOW);
- p->good_octets_received +=
- (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32;
- for (offset = ETH_MIB_BAD_OCTETS_RECEIVED;
- offset <= ETH_MIB_FRAMES_1024_TO_MAX_OCTETS;
- offset += 4)
- *(u32 *)((char *)p + offset) += read_mib(mp, offset);
- p->good_octets_sent += read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_LOW);
- p->good_octets_sent +=
- (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_HIGH) << 32;
- for (offset = ETH_MIB_GOOD_FRAMES_SENT;
- offset <= ETH_MIB_LATE_COLLISION;
- offset += 4)
- *(u32 *)((char *)p + offset) += read_mib(mp, offset);
- }
- /*
- * ethernet_phy_detect - Detect whether a phy is present
- *
- * DESCRIPTION:
- * This function tests whether there is a PHY present on
- * the specified port.
- *
- * INPUT:
- * unsigned int eth_port_num Ethernet Port number.
- *
- * OUTPUT:
- * None
- *
- * RETURN:
- * 0 on success
- * -ENODEV on failure
- *
- */
- static int ethernet_phy_detect(unsigned int port_num)
- {
- unsigned int phy_reg_data0;
- int auto_neg;
- eth_port_read_smi_reg(port_num, 0, &phy_reg_data0);
- auto_neg = phy_reg_data0 & 0x1000;
- phy_reg_data0 ^= 0x1000; /* invert auto_neg */
- eth_port_write_smi_reg(port_num, 0, phy_reg_data0);
- eth_port_read_smi_reg(port_num, 0, &phy_reg_data0);
- if ((phy_reg_data0 & 0x1000) == auto_neg)
- return -ENODEV; /* change didn't take */
- phy_reg_data0 ^= 0x1000;
- eth_port_write_smi_reg(port_num, 0, phy_reg_data0);
- return 0;
- }
- /*
- * ethernet_phy_get - Get the ethernet port PHY address.
- *
- * DESCRIPTION:
- * This routine returns the given ethernet port PHY address.
- *
- * INPUT:
- * unsigned int eth_port_num Ethernet Port number.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * PHY address.
- *
- */
- static int ethernet_phy_get(unsigned int eth_port_num)
- {
- unsigned int reg_data;
- reg_data = mv_read(MV643XX_ETH_PHY_ADDR_REG);
- return ((reg_data >> (5 * eth_port_num)) & 0x1f);
- }
- /*
- * ethernet_phy_set - Set the ethernet port PHY address.
- *
- * DESCRIPTION:
- * This routine sets the given ethernet port PHY address.
- *
- * INPUT:
- * unsigned int eth_port_num Ethernet Port number.
- * int phy_addr PHY address.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * None.
- *
- */
- static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr)
- {
- u32 reg_data;
- int addr_shift = 5 * eth_port_num;
- reg_data = mv_read(MV643XX_ETH_PHY_ADDR_REG);
- reg_data &= ~(0x1f << addr_shift);
- reg_data |= (phy_addr & 0x1f) << addr_shift;
- mv_write(MV643XX_ETH_PHY_ADDR_REG, reg_data);
- }
- /*
- * ethernet_phy_reset - Reset Ethernet port PHY.
- *
- * DESCRIPTION:
- * This routine utilizes the SMI interface to reset the ethernet port PHY.
- *
- * INPUT:
- * unsigned int eth_port_num Ethernet Port number.
- *
- * OUTPUT:
- * The PHY is reset.
- *
- * RETURN:
- * None.
- *
- */
- static void ethernet_phy_reset(unsigned int eth_port_num)
- {
- 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);
- /* wait for PHY to come out of reset */
- do {
- udelay(1);
- eth_port_read_smi_reg(eth_port_num, 0, &phy_reg_data);
- } while (phy_reg_data & 0x8000);
- }
- static void mv643xx_eth_port_enable_tx(unsigned int port_num,
- unsigned int queues)
- {
- mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num), queues);
- }
- static void mv643xx_eth_port_enable_rx(unsigned int port_num,
- unsigned int queues)
- {
- mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num), queues);
- }
- static unsigned int mv643xx_eth_port_disable_tx(unsigned int port_num)
- {
- u32 queues;
- /* Stop Tx port activity. Check port Tx activity. */
- queues = mv_read(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num))
- & 0xFF;
- if (queues) {
- /* Issue stop command for active queues only */
- mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num),
- (queues << 8));
- /* Wait for all Tx activity to terminate. */
- /* Check port cause register that all Tx queues are stopped */
- while (mv_read(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num))
- & 0xFF)
- udelay(PHY_WAIT_MICRO_SECONDS);
- /* Wait for Tx FIFO to empty */
- while (mv_read(MV643XX_ETH_PORT_STATUS_REG(port_num)) &
- ETH_PORT_TX_FIFO_EMPTY)
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
- return queues;
- }
- static unsigned int mv643xx_eth_port_disable_rx(unsigned int port_num)
- {
- u32 queues;
- /* Stop Rx port activity. Check port Rx activity. */
- queues = mv_read(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num))
- & 0xFF;
- if (queues) {
- /* Issue stop command for active queues only */
- mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num),
- (queues << 8));
- /* Wait for all Rx activity to terminate. */
- /* Check port cause register that all Rx queues are stopped */
- while (mv_read(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num))
- & 0xFF)
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
- return queues;
- }
- /*
- * 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:
- * unsigned int eth_port_num Ethernet Port number.
- *
- * OUTPUT:
- * Channel activity is halted.
- *
- * RETURN:
- * None.
- *
- */
- static void eth_port_reset(unsigned int port_num)
- {
- unsigned int reg_data;
- mv643xx_eth_port_disable_tx(port_num);
- mv643xx_eth_port_disable_rx(port_num);
- /* Clear all MIB counters */
- eth_clear_mib_counters(port_num);
- /* Reset the Enable bit in the Configuration Register */
- reg_data = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
- reg_data &= ~(MV643XX_ETH_SERIAL_PORT_ENABLE |
- MV643XX_ETH_DO_NOT_FORCE_LINK_FAIL |
- MV643XX_ETH_FORCE_LINK_PASS);
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), reg_data);
- }
- /*
- * 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:
- * unsigned int port_num Ethernet Port number.
- * 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 void eth_port_read_smi_reg(unsigned int port_num,
- unsigned int phy_reg, unsigned int *value)
- {
- int phy_addr = ethernet_phy_get(port_num);
- unsigned long flags;
- int i;
- /* the SMI register is a shared resource */
- spin_lock_irqsave(&mv643xx_eth_phy_lock, flags);
- /* wait for the SMI register to become available */
- for (i = 0; mv_read(MV643XX_ETH_SMI_REG) & ETH_SMI_BUSY; i++) {
- if (i == PHY_WAIT_ITERATIONS) {
- printk("mv643xx PHY busy timeout, port %d\n", port_num);
- goto out;
- }
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
- mv_write(MV643XX_ETH_SMI_REG,
- (phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_READ);
- /* now wait for the data to be valid */
- for (i = 0; !(mv_read(MV643XX_ETH_SMI_REG) & ETH_SMI_READ_VALID); i++) {
- if (i == PHY_WAIT_ITERATIONS) {
- printk("mv643xx PHY read timeout, port %d\n", port_num);
- goto out;
- }
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
- *value = mv_read(MV643XX_ETH_SMI_REG) & 0xffff;
- out:
- spin_unlock_irqrestore(&mv643xx_eth_phy_lock, flags);
- }
- /*
- * 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:
- * unsigned int eth_port_num Ethernet Port number.
- * 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 void eth_port_write_smi_reg(unsigned int eth_port_num,
- unsigned int phy_reg, unsigned int value)
- {
- int phy_addr;
- int i;
- unsigned long flags;
- phy_addr = ethernet_phy_get(eth_port_num);
- /* the SMI register is a shared resource */
- spin_lock_irqsave(&mv643xx_eth_phy_lock, flags);
- /* wait for the SMI register to become available */
- for (i = 0; mv_read(MV643XX_ETH_SMI_REG) & ETH_SMI_BUSY; i++) {
- if (i == PHY_WAIT_ITERATIONS) {
- printk("mv643xx PHY busy timeout, port %d\n",
- eth_port_num);
- goto out;
- }
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
- mv_write(MV643XX_ETH_SMI_REG, (phy_addr << 16) | (phy_reg << 21) |
- ETH_SMI_OPCODE_WRITE | (value & 0xffff));
- out:
- spin_unlock_irqrestore(&mv643xx_eth_phy_lock, flags);
- }
- /*
- * Wrappers for MII support library.
- */
- static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location)
- {
- int val;
- struct mv643xx_private *mp = netdev_priv(dev);
- eth_port_read_smi_reg(mp->port_num, location, &val);
- return val;
- }
- static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- eth_port_write_smi_reg(mp->port_num, location, val);
- }
- /*
- * 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:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- * struct 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(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info)
- {
- int rx_next_curr_desc, rx_curr_desc, rx_used_desc;
- volatile struct eth_rx_desc *p_rx_desc;
- unsigned int command_status;
- unsigned long flags;
- /* Do not process Rx ring in case of Rx ring resource error */
- if (mp->rx_resource_err)
- return ETH_QUEUE_FULL;
- spin_lock_irqsave(&mp->lock, flags);
- /* Get the Rx Desc ring 'curr and 'used' indexes */
- rx_curr_desc = mp->rx_curr_desc_q;
- rx_used_desc = mp->rx_used_desc_q;
- p_rx_desc = &mp->p_rx_desc_area[rx_curr_desc];
- /* The following parameters are used to save readings from memory */
- command_status = p_rx_desc->cmd_sts;
- rmb();
- /* Nothing to receive... */
- if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
- spin_unlock_irqrestore(&mp->lock, flags);
- return ETH_END_OF_JOB;
- }
- p_pkt_info->byte_cnt = (p_rx_desc->byte_cnt) - RX_BUF_OFFSET;
- p_pkt_info->cmd_sts = command_status;
- p_pkt_info->buf_ptr = (p_rx_desc->buf_ptr) + RX_BUF_OFFSET;
- p_pkt_info->return_info = mp->rx_skb[rx_curr_desc];
- p_pkt_info->l4i_chk = p_rx_desc->buf_size;
- /*
- * Clean the return info field to indicate that the
- * packet has been moved to the upper layers
- */
- mp->rx_skb[rx_curr_desc] = NULL;
- /* Update current index in data structure */
- rx_next_curr_desc = (rx_curr_desc + 1) % mp->rx_ring_size;
- mp->rx_curr_desc_q = rx_next_curr_desc;
- /* Rx descriptors exhausted. Set the Rx ring resource error flag */
- if (rx_next_curr_desc == rx_used_desc)
- mp->rx_resource_err = 1;
- spin_unlock_irqrestore(&mp->lock, flags);
- 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:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- * struct pkt_info *p_pkt_info Information on 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(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info)
- {
- int used_rx_desc; /* Where to return Rx resource */
- volatile struct eth_rx_desc *p_used_rx_desc;
- unsigned long flags;
- spin_lock_irqsave(&mp->lock, flags);
- /* Get 'used' Rx descriptor */
- used_rx_desc = mp->rx_used_desc_q;
- p_used_rx_desc = &mp->p_rx_desc_area[used_rx_desc];
- p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr;
- p_used_rx_desc->buf_size = p_pkt_info->byte_cnt;
- mp->rx_skb[used_rx_desc] = p_pkt_info->return_info;
- /* Flush the write pipe */
- /* Return the descriptor to DMA ownership */
- wmb();
- p_used_rx_desc->cmd_sts =
- ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
- wmb();
- /* Move the used descriptor pointer to the next descriptor */
- mp->rx_used_desc_q = (used_rx_desc + 1) % mp->rx_ring_size;
- /* Any Rx return cancels the Rx resource error status */
- mp->rx_resource_err = 0;
- spin_unlock_irqrestore(&mp->lock, flags);
- return ETH_OK;
- }
- /************* Begin ethtool support *************************/
- struct mv643xx_stats {
- char stat_string[ETH_GSTRING_LEN];
- int sizeof_stat;
- int stat_offset;
- };
- #define MV643XX_STAT(m) sizeof(((struct mv643xx_private *)0)->m), \
- offsetof(struct mv643xx_private, m)
- static const struct mv643xx_stats mv643xx_gstrings_stats[] = {
- { "rx_packets", MV643XX_STAT(stats.rx_packets) },
- { "tx_packets", MV643XX_STAT(stats.tx_packets) },
- { "rx_bytes", MV643XX_STAT(stats.rx_bytes) },
- { "tx_bytes", MV643XX_STAT(stats.tx_bytes) },
- { "rx_errors", MV643XX_STAT(stats.rx_errors) },
- { "tx_errors", MV643XX_STAT(stats.tx_errors) },
- { "rx_dropped", MV643XX_STAT(stats.rx_dropped) },
- { "tx_dropped", MV643XX_STAT(stats.tx_dropped) },
- { "good_octets_received", MV643XX_STAT(mib_counters.good_octets_received) },
- { "bad_octets_received", MV643XX_STAT(mib_counters.bad_octets_received) },
- { "internal_mac_transmit_err", MV643XX_STAT(mib_counters.internal_mac_transmit_err) },
- { "good_frames_received", MV643XX_STAT(mib_counters.good_frames_received) },
- { "bad_frames_received", MV643XX_STAT(mib_counters.bad_frames_received) },
- { "broadcast_frames_received", MV643XX_STAT(mib_counters.broadcast_frames_received) },
- { "multicast_frames_received", MV643XX_STAT(mib_counters.multicast_frames_received) },
- { "frames_64_octets", MV643XX_STAT(mib_counters.frames_64_octets) },
- { "frames_65_to_127_octets", MV643XX_STAT(mib_counters.frames_65_to_127_octets) },
- { "frames_128_to_255_octets", MV643XX_STAT(mib_counters.frames_128_to_255_octets) },
- { "frames_256_to_511_octets", MV643XX_STAT(mib_counters.frames_256_to_511_octets) },
- { "frames_512_to_1023_octets", MV643XX_STAT(mib_counters.frames_512_to_1023_octets) },
- { "frames_1024_to_max_octets", MV643XX_STAT(mib_counters.frames_1024_to_max_octets) },
- { "good_octets_sent", MV643XX_STAT(mib_counters.good_octets_sent) },
- { "good_frames_sent", MV643XX_STAT(mib_counters.good_frames_sent) },
- { "excessive_collision", MV643XX_STAT(mib_counters.excessive_collision) },
- { "multicast_frames_sent", MV643XX_STAT(mib_counters.multicast_frames_sent) },
- { "broadcast_frames_sent", MV643XX_STAT(mib_counters.broadcast_frames_sent) },
- { "unrec_mac_control_received", MV643XX_STAT(mib_counters.unrec_mac_control_received) },
- { "fc_sent", MV643XX_STAT(mib_counters.fc_sent) },
- { "good_fc_received", MV643XX_STAT(mib_counters.good_fc_received) },
- { "bad_fc_received", MV643XX_STAT(mib_counters.bad_fc_received) },
- { "undersize_received", MV643XX_STAT(mib_counters.undersize_received) },
- { "fragments_received", MV643XX_STAT(mib_counters.fragments_received) },
- { "oversize_received", MV643XX_STAT(mib_counters.oversize_received) },
- { "jabber_received", MV643XX_STAT(mib_counters.jabber_received) },
- { "mac_receive_error", MV643XX_STAT(mib_counters.mac_receive_error) },
- { "bad_crc_event", MV643XX_STAT(mib_counters.bad_crc_event) },
- { "collision", MV643XX_STAT(mib_counters.collision) },
- { "late_collision", MV643XX_STAT(mib_counters.late_collision) },
- };
- #define MV643XX_STATS_LEN \
- sizeof(mv643xx_gstrings_stats) / sizeof(struct mv643xx_stats)
- static void mv643xx_get_drvinfo(struct net_device *netdev,
- struct ethtool_drvinfo *drvinfo)
- {
- strncpy(drvinfo->driver, mv643xx_driver_name, 32);
- strncpy(drvinfo->version, mv643xx_driver_version, 32);
- strncpy(drvinfo->fw_version, "N/A", 32);
- strncpy(drvinfo->bus_info, "mv643xx", 32);
- drvinfo->n_stats = MV643XX_STATS_LEN;
- }
- static int mv643xx_get_stats_count(struct net_device *netdev)
- {
- return MV643XX_STATS_LEN;
- }
- static void mv643xx_get_ethtool_stats(struct net_device *netdev,
- struct ethtool_stats *stats, uint64_t *data)
- {
- struct mv643xx_private *mp = netdev->priv;
- int i;
- eth_update_mib_counters(mp);
- for (i = 0; i < MV643XX_STATS_LEN; i++) {
- char *p = (char *)mp+mv643xx_gstrings_stats[i].stat_offset;
- data[i] = (mv643xx_gstrings_stats[i].sizeof_stat ==
- sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p;
- }
- }
- static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset,
- uint8_t *data)
- {
- int i;
- switch(stringset) {
- case ETH_SS_STATS:
- for (i=0; i < MV643XX_STATS_LEN; i++) {
- memcpy(data + i * ETH_GSTRING_LEN,
- mv643xx_gstrings_stats[i].stat_string,
- ETH_GSTRING_LEN);
- }
- break;
- }
- }
- static u32 mv643xx_eth_get_link(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- return mii_link_ok(&mp->mii);
- }
- static int mv643xx_eth_nway_restart(struct net_device *dev)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- return mii_nway_restart(&mp->mii);
- }
- static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
- {
- struct mv643xx_private *mp = netdev_priv(dev);
- return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
- }
- static const struct ethtool_ops mv643xx_ethtool_ops = {
- .get_settings = mv643xx_get_settings,
- .set_settings = mv643xx_set_settings,
- .get_drvinfo = mv643xx_get_drvinfo,
- .get_link = mv643xx_eth_get_link,
- .get_sg = ethtool_op_get_sg,
- .set_sg = ethtool_op_set_sg,
- .get_stats_count = mv643xx_get_stats_count,
- .get_ethtool_stats = mv643xx_get_ethtool_stats,
- .get_strings = mv643xx_get_strings,
- .get_stats_count = mv643xx_get_stats_count,
- .get_ethtool_stats = mv643xx_get_ethtool_stats,
- .nway_reset = mv643xx_eth_nway_restart,
- };
- /************* End ethtool support *************************/
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