| /********************************************************************** |
| * Author: Cavium Networks |
| * |
| * Contact: support@caviumnetworks.com |
| * This file is part of the OCTEON SDK |
| * |
| * Copyright (c) 2003-2007 Cavium Networks |
| * |
| * This file is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License, Version 2, as |
| * published by the Free Software Foundation. |
| * |
| * This file is distributed in the hope that it will be useful, but |
| * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty |
| * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or |
| * NONINFRINGEMENT. See the GNU General Public License for more |
| * details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this file; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * or visit http://www.gnu.org/licenses/. |
| * |
| * This file may also be available under a different license from Cavium. |
| * Contact Cavium Networks for more information |
| **********************************************************************/ |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/phy.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| |
| #include <net/dst.h> |
| |
| #include <asm/octeon/octeon.h> |
| |
| #include "ethernet-defines.h" |
| #include "octeon-ethernet.h" |
| #include "ethernet-mem.h" |
| #include "ethernet-rx.h" |
| #include "ethernet-tx.h" |
| #include "ethernet-mdio.h" |
| #include "ethernet-util.h" |
| |
| #include <asm/octeon/cvmx-pip.h> |
| #include <asm/octeon/cvmx-pko.h> |
| #include <asm/octeon/cvmx-fau.h> |
| #include <asm/octeon/cvmx-ipd.h> |
| #include <asm/octeon/cvmx-helper.h> |
| |
| #include <asm/octeon/cvmx-gmxx-defs.h> |
| #include <asm/octeon/cvmx-smix-defs.h> |
| |
| #if defined(CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS) \ |
| && CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS |
| int num_packet_buffers = CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS; |
| #else |
| int num_packet_buffers = 1024; |
| #endif |
| module_param(num_packet_buffers, int, 0444); |
| MODULE_PARM_DESC(num_packet_buffers, "\n" |
| "\tNumber of packet buffers to allocate and store in the\n" |
| "\tFPA. By default, 1024 packet buffers are used unless\n" |
| "\tCONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS is defined."); |
| |
| int pow_receive_group = 15; |
| module_param(pow_receive_group, int, 0444); |
| MODULE_PARM_DESC(pow_receive_group, "\n" |
| "\tPOW group to receive packets from. All ethernet hardware\n" |
| "\twill be configured to send incomming packets to this POW\n" |
| "\tgroup. Also any other software can submit packets to this\n" |
| "\tgroup for the kernel to process."); |
| |
| int pow_send_group = -1; |
| module_param(pow_send_group, int, 0644); |
| MODULE_PARM_DESC(pow_send_group, "\n" |
| "\tPOW group to send packets to other software on. This\n" |
| "\tcontrols the creation of the virtual device pow0.\n" |
| "\talways_use_pow also depends on this value."); |
| |
| int always_use_pow; |
| module_param(always_use_pow, int, 0444); |
| MODULE_PARM_DESC(always_use_pow, "\n" |
| "\tWhen set, always send to the pow group. This will cause\n" |
| "\tpackets sent to real ethernet devices to be sent to the\n" |
| "\tPOW group instead of the hardware. Unless some other\n" |
| "\tapplication changes the config, packets will still be\n" |
| "\treceived from the low level hardware. Use this option\n" |
| "\tto allow a CVMX app to intercept all packets from the\n" |
| "\tlinux kernel. You must specify pow_send_group along with\n" |
| "\tthis option."); |
| |
| char pow_send_list[128] = ""; |
| module_param_string(pow_send_list, pow_send_list, sizeof(pow_send_list), 0444); |
| MODULE_PARM_DESC(pow_send_list, "\n" |
| "\tComma separated list of ethernet devices that should use the\n" |
| "\tPOW for transmit instead of the actual ethernet hardware. This\n" |
| "\tis a per port version of always_use_pow. always_use_pow takes\n" |
| "\tprecedence over this list. For example, setting this to\n" |
| "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n" |
| "\tusing the pow_send_group."); |
| |
| int max_rx_cpus = -1; |
| module_param(max_rx_cpus, int, 0444); |
| MODULE_PARM_DESC(max_rx_cpus, "\n" |
| "\t\tThe maximum number of CPUs to use for packet reception.\n" |
| "\t\tUse -1 to use all available CPUs."); |
| |
| int rx_napi_weight = 32; |
| module_param(rx_napi_weight, int, 0444); |
| MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter."); |
| |
| /* |
| * The offset from mac_addr_base that should be used for the next port |
| * that is configured. By convention, if any mgmt ports exist on the |
| * chip, they get the first mac addresses, The ports controlled by |
| * this driver are numbered sequencially following any mgmt addresses |
| * that may exist. |
| */ |
| static unsigned int cvm_oct_mac_addr_offset; |
| |
| /** |
| * cvm_oct_poll_queue - Workqueue for polling operations. |
| */ |
| struct workqueue_struct *cvm_oct_poll_queue; |
| |
| /** |
| * cvm_oct_poll_queue_stopping - flag to indicate polling should stop. |
| * |
| * Set to one right before cvm_oct_poll_queue is destroyed. |
| */ |
| atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0); |
| |
| /** |
| * Array of every ethernet device owned by this driver indexed by |
| * the ipd input port number. |
| */ |
| struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS]; |
| |
| u64 cvm_oct_tx_poll_interval; |
| |
| static void cvm_oct_rx_refill_worker(struct work_struct *work); |
| static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker); |
| |
| static void cvm_oct_rx_refill_worker(struct work_struct *work) |
| { |
| /* |
| * FPA 0 may have been drained, try to refill it if we need |
| * more than num_packet_buffers / 2, otherwise normal receive |
| * processing will refill it. If it were drained, no packets |
| * could be received so cvm_oct_napi_poll would never be |
| * invoked to do the refill. |
| */ |
| cvm_oct_rx_refill_pool(num_packet_buffers / 2); |
| |
| if (!atomic_read(&cvm_oct_poll_queue_stopping)) |
| queue_delayed_work(cvm_oct_poll_queue, |
| &cvm_oct_rx_refill_work, HZ); |
| } |
| |
| static void cvm_oct_periodic_worker(struct work_struct *work) |
| { |
| struct octeon_ethernet *priv = container_of(work, |
| struct octeon_ethernet, |
| port_periodic_work.work); |
| |
| if (priv->poll) |
| priv->poll(cvm_oct_device[priv->port]); |
| |
| cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats(cvm_oct_device[priv->port]); |
| |
| if (!atomic_read(&cvm_oct_poll_queue_stopping)) |
| queue_delayed_work(cvm_oct_poll_queue, &priv->port_periodic_work, HZ); |
| } |
| |
| static __init void cvm_oct_configure_common_hw(void) |
| { |
| /* Setup the FPA */ |
| cvmx_fpa_enable(); |
| cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE, |
| num_packet_buffers); |
| cvm_oct_mem_fill_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE, |
| num_packet_buffers); |
| if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL) |
| cvm_oct_mem_fill_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL, |
| CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128); |
| |
| if (USE_RED) |
| cvmx_helper_setup_red(num_packet_buffers / 4, |
| num_packet_buffers / 8); |
| |
| } |
| |
| /** |
| * cvm_oct_free_work- Free a work queue entry |
| * |
| * @work_queue_entry: Work queue entry to free |
| * |
| * Returns Zero on success, Negative on failure. |
| */ |
| int cvm_oct_free_work(void *work_queue_entry) |
| { |
| cvmx_wqe_t *work = work_queue_entry; |
| |
| int segments = work->word2.s.bufs; |
| union cvmx_buf_ptr segment_ptr = work->packet_ptr; |
| |
| while (segments--) { |
| union cvmx_buf_ptr next_ptr = *(union cvmx_buf_ptr *) |
| cvmx_phys_to_ptr(segment_ptr.s.addr - 8); |
| if (unlikely(!segment_ptr.s.i)) |
| cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr), |
| segment_ptr.s.pool, |
| DONT_WRITEBACK(CVMX_FPA_PACKET_POOL_SIZE / |
| 128)); |
| segment_ptr = next_ptr; |
| } |
| cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, DONT_WRITEBACK(1)); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(cvm_oct_free_work); |
| |
| /** |
| * cvm_oct_common_get_stats - get the low level ethernet statistics |
| * @dev: Device to get the statistics from |
| * |
| * Returns Pointer to the statistics |
| */ |
| static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) |
| { |
| cvmx_pip_port_status_t rx_status; |
| cvmx_pko_port_status_t tx_status; |
| struct octeon_ethernet *priv = netdev_priv(dev); |
| |
| if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) { |
| if (octeon_is_simulation()) { |
| /* The simulator doesn't support statistics */ |
| memset(&rx_status, 0, sizeof(rx_status)); |
| memset(&tx_status, 0, sizeof(tx_status)); |
| } else { |
| cvmx_pip_get_port_status(priv->port, 1, &rx_status); |
| cvmx_pko_get_port_status(priv->port, 1, &tx_status); |
| } |
| |
| priv->stats.rx_packets += rx_status.inb_packets; |
| priv->stats.tx_packets += tx_status.packets; |
| priv->stats.rx_bytes += rx_status.inb_octets; |
| priv->stats.tx_bytes += tx_status.octets; |
| priv->stats.multicast += rx_status.multicast_packets; |
| priv->stats.rx_crc_errors += rx_status.inb_errors; |
| priv->stats.rx_frame_errors += rx_status.fcs_align_err_packets; |
| |
| /* |
| * The drop counter must be incremented atomically |
| * since the RX tasklet also increments it. |
| */ |
| #ifdef CONFIG_64BIT |
| atomic64_add(rx_status.dropped_packets, |
| (atomic64_t *)&priv->stats.rx_dropped); |
| #else |
| atomic_add(rx_status.dropped_packets, |
| (atomic_t *)&priv->stats.rx_dropped); |
| #endif |
| } |
| |
| return &priv->stats; |
| } |
| |
| /** |
| * cvm_oct_common_change_mtu - change the link MTU |
| * @dev: Device to change |
| * @new_mtu: The new MTU |
| * |
| * Returns Zero on success |
| */ |
| static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu) |
| { |
| struct octeon_ethernet *priv = netdev_priv(dev); |
| int interface = INTERFACE(priv->port); |
| int index = INDEX(priv->port); |
| #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) |
| int vlan_bytes = 4; |
| #else |
| int vlan_bytes = 0; |
| #endif |
| |
| /* |
| * Limit the MTU to make sure the ethernet packets are between |
| * 64 bytes and 65535 bytes. |
| */ |
| if ((new_mtu + 14 + 4 + vlan_bytes < 64) |
| || (new_mtu + 14 + 4 + vlan_bytes > 65392)) { |
| pr_err("MTU must be between %d and %d.\n", |
| 64 - 14 - 4 - vlan_bytes, 65392 - 14 - 4 - vlan_bytes); |
| return -EINVAL; |
| } |
| dev->mtu = new_mtu; |
| |
| if ((interface < 2) |
| && (cvmx_helper_interface_get_mode(interface) != |
| CVMX_HELPER_INTERFACE_MODE_SPI)) { |
| /* Add ethernet header and FCS, and VLAN if configured. */ |
| int max_packet = new_mtu + 14 + 4 + vlan_bytes; |
| |
| if (OCTEON_IS_MODEL(OCTEON_CN3XXX) |
| || OCTEON_IS_MODEL(OCTEON_CN58XX)) { |
| /* Signal errors on packets larger than the MTU */ |
| cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface), |
| max_packet); |
| } else { |
| /* |
| * Set the hardware to truncate packets larger |
| * than the MTU and smaller the 64 bytes. |
| */ |
| union cvmx_pip_frm_len_chkx frm_len_chk; |
| frm_len_chk.u64 = 0; |
| frm_len_chk.s.minlen = 64; |
| frm_len_chk.s.maxlen = max_packet; |
| cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface), |
| frm_len_chk.u64); |
| } |
| /* |
| * Set the hardware to truncate packets larger than |
| * the MTU. The jabber register must be set to a |
| * multiple of 8 bytes, so round up. |
| */ |
| cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface), |
| (max_packet + 7) & ~7u); |
| } |
| return 0; |
| } |
| |
| /** |
| * cvm_oct_common_set_multicast_list - set the multicast list |
| * @dev: Device to work on |
| */ |
| static void cvm_oct_common_set_multicast_list(struct net_device *dev) |
| { |
| union cvmx_gmxx_prtx_cfg gmx_cfg; |
| struct octeon_ethernet *priv = netdev_priv(dev); |
| int interface = INTERFACE(priv->port); |
| int index = INDEX(priv->port); |
| |
| if ((interface < 2) |
| && (cvmx_helper_interface_get_mode(interface) != |
| CVMX_HELPER_INTERFACE_MODE_SPI)) { |
| union cvmx_gmxx_rxx_adr_ctl control; |
| control.u64 = 0; |
| control.s.bcst = 1; /* Allow broadcast MAC addresses */ |
| |
| if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) || |
| (dev->flags & IFF_PROMISC)) |
| /* Force accept multicast packets */ |
| control.s.mcst = 2; |
| else |
| /* Force reject multicast packets */ |
| control.s.mcst = 1; |
| |
| if (dev->flags & IFF_PROMISC) |
| /* |
| * Reject matches if promisc. Since CAM is |
| * shut off, should accept everything. |
| */ |
| control.s.cam_mode = 0; |
| else |
| /* Filter packets based on the CAM */ |
| control.s.cam_mode = 1; |
| |
| gmx_cfg.u64 = |
| cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); |
| cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), |
| gmx_cfg.u64 & ~1ull); |
| |
| cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface), |
| control.u64); |
| if (dev->flags & IFF_PROMISC) |
| cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN |
| (index, interface), 0); |
| else |
| cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN |
| (index, interface), 1); |
| |
| cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), |
| gmx_cfg.u64); |
| } |
| } |
| |
| /** |
| * cvm_oct_common_set_mac_address - set the hardware MAC address for a device |
| * @dev: The device in question. |
| * @addr: Address structure to change it too. |
| |
| * Returns Zero on success |
| */ |
| static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) |
| { |
| struct octeon_ethernet *priv = netdev_priv(dev); |
| union cvmx_gmxx_prtx_cfg gmx_cfg; |
| int interface = INTERFACE(priv->port); |
| int index = INDEX(priv->port); |
| |
| memcpy(dev->dev_addr, addr + 2, 6); |
| |
| if ((interface < 2) |
| && (cvmx_helper_interface_get_mode(interface) != |
| CVMX_HELPER_INTERFACE_MODE_SPI)) { |
| int i; |
| uint8_t *ptr = addr; |
| uint64_t mac = 0; |
| for (i = 0; i < 6; i++) |
| mac = (mac << 8) | (uint64_t) (ptr[i + 2]); |
| |
| gmx_cfg.u64 = |
| cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); |
| cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), |
| gmx_cfg.u64 & ~1ull); |
| |
| cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac); |
| cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface), |
| ptr[2]); |
| cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface), |
| ptr[3]); |
| cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface), |
| ptr[4]); |
| cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface), |
| ptr[5]); |
| cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface), |
| ptr[6]); |
| cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface), |
| ptr[7]); |
| cvm_oct_common_set_multicast_list(dev); |
| cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), |
| gmx_cfg.u64); |
| } |
| return 0; |
| } |
| |
| /** |
| * cvm_oct_common_init - per network device initialization |
| * @dev: Device to initialize |
| * |
| * Returns Zero on success |
| */ |
| int cvm_oct_common_init(struct net_device *dev) |
| { |
| struct octeon_ethernet *priv = netdev_priv(dev); |
| struct sockaddr sa; |
| u64 mac = ((u64)(octeon_bootinfo->mac_addr_base[0] & 0xff) << 40) | |
| ((u64)(octeon_bootinfo->mac_addr_base[1] & 0xff) << 32) | |
| ((u64)(octeon_bootinfo->mac_addr_base[2] & 0xff) << 24) | |
| ((u64)(octeon_bootinfo->mac_addr_base[3] & 0xff) << 16) | |
| ((u64)(octeon_bootinfo->mac_addr_base[4] & 0xff) << 8) | |
| (u64)(octeon_bootinfo->mac_addr_base[5] & 0xff); |
| |
| mac += cvm_oct_mac_addr_offset; |
| sa.sa_data[0] = (mac >> 40) & 0xff; |
| sa.sa_data[1] = (mac >> 32) & 0xff; |
| sa.sa_data[2] = (mac >> 24) & 0xff; |
| sa.sa_data[3] = (mac >> 16) & 0xff; |
| sa.sa_data[4] = (mac >> 8) & 0xff; |
| sa.sa_data[5] = mac & 0xff; |
| |
| if (cvm_oct_mac_addr_offset >= octeon_bootinfo->mac_addr_count) |
| printk(KERN_DEBUG "%s: Using MAC outside of the assigned range:" |
| " %pM\n", dev->name, sa.sa_data); |
| cvm_oct_mac_addr_offset++; |
| |
| /* |
| * Force the interface to use the POW send if always_use_pow |
| * was specified or it is in the pow send list. |
| */ |
| if ((pow_send_group != -1) |
| && (always_use_pow || strstr(pow_send_list, dev->name))) |
| priv->queue = -1; |
| |
| if (priv->queue != -1) { |
| dev->features |= NETIF_F_SG; |
| if (USE_HW_TCPUDP_CHECKSUM) |
| dev->features |= NETIF_F_IP_CSUM; |
| } |
| |
| /* We do our own locking, Linux doesn't need to */ |
| dev->features |= NETIF_F_LLTX; |
| SET_ETHTOOL_OPS(dev, &cvm_oct_ethtool_ops); |
| |
| cvm_oct_phy_setup_device(dev); |
| dev->netdev_ops->ndo_set_mac_address(dev, &sa); |
| dev->netdev_ops->ndo_change_mtu(dev, dev->mtu); |
| |
| /* |
| * Zero out stats for port so we won't mistakenly show |
| * counters from the bootloader. |
| */ |
| memset(dev->netdev_ops->ndo_get_stats(dev), 0, |
| sizeof(struct net_device_stats)); |
| |
| return 0; |
| } |
| |
| void cvm_oct_common_uninit(struct net_device *dev) |
| { |
| struct octeon_ethernet *priv = netdev_priv(dev); |
| |
| if (priv->phydev) |
| phy_disconnect(priv->phydev); |
| } |
| |
| static const struct net_device_ops cvm_oct_npi_netdev_ops = { |
| .ndo_init = cvm_oct_common_init, |
| .ndo_uninit = cvm_oct_common_uninit, |
| .ndo_start_xmit = cvm_oct_xmit, |
| .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
| .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| .ndo_do_ioctl = cvm_oct_ioctl, |
| .ndo_change_mtu = cvm_oct_common_change_mtu, |
| .ndo_get_stats = cvm_oct_common_get_stats, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = cvm_oct_poll_controller, |
| #endif |
| }; |
| static const struct net_device_ops cvm_oct_xaui_netdev_ops = { |
| .ndo_init = cvm_oct_xaui_init, |
| .ndo_uninit = cvm_oct_xaui_uninit, |
| .ndo_open = cvm_oct_xaui_open, |
| .ndo_stop = cvm_oct_xaui_stop, |
| .ndo_start_xmit = cvm_oct_xmit, |
| .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
| .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| .ndo_do_ioctl = cvm_oct_ioctl, |
| .ndo_change_mtu = cvm_oct_common_change_mtu, |
| .ndo_get_stats = cvm_oct_common_get_stats, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = cvm_oct_poll_controller, |
| #endif |
| }; |
| static const struct net_device_ops cvm_oct_sgmii_netdev_ops = { |
| .ndo_init = cvm_oct_sgmii_init, |
| .ndo_uninit = cvm_oct_sgmii_uninit, |
| .ndo_open = cvm_oct_sgmii_open, |
| .ndo_stop = cvm_oct_sgmii_stop, |
| .ndo_start_xmit = cvm_oct_xmit, |
| .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
| .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| .ndo_do_ioctl = cvm_oct_ioctl, |
| .ndo_change_mtu = cvm_oct_common_change_mtu, |
| .ndo_get_stats = cvm_oct_common_get_stats, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = cvm_oct_poll_controller, |
| #endif |
| }; |
| static const struct net_device_ops cvm_oct_spi_netdev_ops = { |
| .ndo_init = cvm_oct_spi_init, |
| .ndo_uninit = cvm_oct_spi_uninit, |
| .ndo_start_xmit = cvm_oct_xmit, |
| .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
| .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| .ndo_do_ioctl = cvm_oct_ioctl, |
| .ndo_change_mtu = cvm_oct_common_change_mtu, |
| .ndo_get_stats = cvm_oct_common_get_stats, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = cvm_oct_poll_controller, |
| #endif |
| }; |
| static const struct net_device_ops cvm_oct_rgmii_netdev_ops = { |
| .ndo_init = cvm_oct_rgmii_init, |
| .ndo_uninit = cvm_oct_rgmii_uninit, |
| .ndo_open = cvm_oct_rgmii_open, |
| .ndo_stop = cvm_oct_rgmii_stop, |
| .ndo_start_xmit = cvm_oct_xmit, |
| .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
| .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| .ndo_do_ioctl = cvm_oct_ioctl, |
| .ndo_change_mtu = cvm_oct_common_change_mtu, |
| .ndo_get_stats = cvm_oct_common_get_stats, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = cvm_oct_poll_controller, |
| #endif |
| }; |
| static const struct net_device_ops cvm_oct_pow_netdev_ops = { |
| .ndo_init = cvm_oct_common_init, |
| .ndo_start_xmit = cvm_oct_xmit_pow, |
| .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, |
| .ndo_set_mac_address = cvm_oct_common_set_mac_address, |
| .ndo_do_ioctl = cvm_oct_ioctl, |
| .ndo_change_mtu = cvm_oct_common_change_mtu, |
| .ndo_get_stats = cvm_oct_common_get_stats, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = cvm_oct_poll_controller, |
| #endif |
| }; |
| |
| extern void octeon_mdiobus_force_mod_depencency(void); |
| |
| static int __init cvm_oct_init_module(void) |
| { |
| int num_interfaces; |
| int interface; |
| int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE; |
| int qos; |
| |
| octeon_mdiobus_force_mod_depencency(); |
| pr_notice("cavium-ethernet %s\n", OCTEON_ETHERNET_VERSION); |
| |
| if (OCTEON_IS_MODEL(OCTEON_CN52XX)) |
| cvm_oct_mac_addr_offset = 2; /* First two are the mgmt ports. */ |
| else if (OCTEON_IS_MODEL(OCTEON_CN56XX)) |
| cvm_oct_mac_addr_offset = 1; /* First one is the mgmt port. */ |
| else |
| cvm_oct_mac_addr_offset = 0; |
| |
| cvm_oct_poll_queue = create_singlethread_workqueue("octeon-ethernet"); |
| if (cvm_oct_poll_queue == NULL) { |
| pr_err("octeon-ethernet: Cannot create workqueue"); |
| return -ENOMEM; |
| } |
| |
| cvm_oct_configure_common_hw(); |
| |
| cvmx_helper_initialize_packet_io_global(); |
| |
| /* Change the input group for all ports before input is enabled */ |
| num_interfaces = cvmx_helper_get_number_of_interfaces(); |
| for (interface = 0; interface < num_interfaces; interface++) { |
| int num_ports = cvmx_helper_ports_on_interface(interface); |
| int port; |
| |
| for (port = cvmx_helper_get_ipd_port(interface, 0); |
| port < cvmx_helper_get_ipd_port(interface, num_ports); |
| port++) { |
| union cvmx_pip_prt_tagx pip_prt_tagx; |
| pip_prt_tagx.u64 = |
| cvmx_read_csr(CVMX_PIP_PRT_TAGX(port)); |
| pip_prt_tagx.s.grp = pow_receive_group; |
| cvmx_write_csr(CVMX_PIP_PRT_TAGX(port), |
| pip_prt_tagx.u64); |
| } |
| } |
| |
| cvmx_helper_ipd_and_packet_input_enable(); |
| |
| memset(cvm_oct_device, 0, sizeof(cvm_oct_device)); |
| |
| /* |
| * Initialize the FAU used for counting packet buffers that |
| * need to be freed. |
| */ |
| cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); |
| |
| /* Initialize the FAU used for counting tx SKBs that need to be freed */ |
| cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0); |
| |
| if ((pow_send_group != -1)) { |
| struct net_device *dev; |
| pr_info("\tConfiguring device for POW only access\n"); |
| dev = alloc_etherdev(sizeof(struct octeon_ethernet)); |
| if (dev) { |
| /* Initialize the device private structure. */ |
| struct octeon_ethernet *priv = netdev_priv(dev); |
| |
| dev->netdev_ops = &cvm_oct_pow_netdev_ops; |
| priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED; |
| priv->port = CVMX_PIP_NUM_INPUT_PORTS; |
| priv->queue = -1; |
| strcpy(dev->name, "pow%d"); |
| for (qos = 0; qos < 16; qos++) |
| skb_queue_head_init(&priv->tx_free_list[qos]); |
| |
| if (register_netdev(dev) < 0) { |
| pr_err("Failed to register ethernet device for POW\n"); |
| free_netdev(dev); |
| } else { |
| cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev; |
| pr_info("%s: POW send group %d, receive group %d\n", |
| dev->name, pow_send_group, |
| pow_receive_group); |
| } |
| } else { |
| pr_err("Failed to allocate ethernet device for POW\n"); |
| } |
| } |
| |
| num_interfaces = cvmx_helper_get_number_of_interfaces(); |
| for (interface = 0; interface < num_interfaces; interface++) { |
| cvmx_helper_interface_mode_t imode = |
| cvmx_helper_interface_get_mode(interface); |
| int num_ports = cvmx_helper_ports_on_interface(interface); |
| int port; |
| |
| for (port = cvmx_helper_get_ipd_port(interface, 0); |
| port < cvmx_helper_get_ipd_port(interface, num_ports); |
| port++) { |
| struct octeon_ethernet *priv; |
| struct net_device *dev = |
| alloc_etherdev(sizeof(struct octeon_ethernet)); |
| if (!dev) { |
| pr_err("Failed to allocate ethernet device for port %d\n", port); |
| continue; |
| } |
| |
| /* Initialize the device private structure. */ |
| priv = netdev_priv(dev); |
| |
| INIT_DELAYED_WORK(&priv->port_periodic_work, |
| cvm_oct_periodic_worker); |
| priv->imode = imode; |
| priv->port = port; |
| priv->queue = cvmx_pko_get_base_queue(priv->port); |
| priv->fau = fau - cvmx_pko_get_num_queues(port) * 4; |
| for (qos = 0; qos < 16; qos++) |
| skb_queue_head_init(&priv->tx_free_list[qos]); |
| for (qos = 0; qos < cvmx_pko_get_num_queues(port); |
| qos++) |
| cvmx_fau_atomic_write32(priv->fau + qos * 4, 0); |
| |
| switch (priv->imode) { |
| |
| /* These types don't support ports to IPD/PKO */ |
| case CVMX_HELPER_INTERFACE_MODE_DISABLED: |
| case CVMX_HELPER_INTERFACE_MODE_PCIE: |
| case CVMX_HELPER_INTERFACE_MODE_PICMG: |
| break; |
| |
| case CVMX_HELPER_INTERFACE_MODE_NPI: |
| dev->netdev_ops = &cvm_oct_npi_netdev_ops; |
| strcpy(dev->name, "npi%d"); |
| break; |
| |
| case CVMX_HELPER_INTERFACE_MODE_XAUI: |
| dev->netdev_ops = &cvm_oct_xaui_netdev_ops; |
| strcpy(dev->name, "xaui%d"); |
| break; |
| |
| case CVMX_HELPER_INTERFACE_MODE_LOOP: |
| dev->netdev_ops = &cvm_oct_npi_netdev_ops; |
| strcpy(dev->name, "loop%d"); |
| break; |
| |
| case CVMX_HELPER_INTERFACE_MODE_SGMII: |
| dev->netdev_ops = &cvm_oct_sgmii_netdev_ops; |
| strcpy(dev->name, "eth%d"); |
| break; |
| |
| case CVMX_HELPER_INTERFACE_MODE_SPI: |
| dev->netdev_ops = &cvm_oct_spi_netdev_ops; |
| strcpy(dev->name, "spi%d"); |
| break; |
| |
| case CVMX_HELPER_INTERFACE_MODE_RGMII: |
| case CVMX_HELPER_INTERFACE_MODE_GMII: |
| dev->netdev_ops = &cvm_oct_rgmii_netdev_ops; |
| strcpy(dev->name, "eth%d"); |
| break; |
| } |
| |
| if (!dev->netdev_ops) { |
| free_netdev(dev); |
| } else if (register_netdev(dev) < 0) { |
| pr_err("Failed to register ethernet device " |
| "for interface %d, port %d\n", |
| interface, priv->port); |
| free_netdev(dev); |
| } else { |
| cvm_oct_device[priv->port] = dev; |
| fau -= |
| cvmx_pko_get_num_queues(priv->port) * |
| sizeof(uint32_t); |
| queue_delayed_work(cvm_oct_poll_queue, |
| &priv->port_periodic_work, HZ); |
| } |
| } |
| } |
| |
| cvm_oct_tx_initialize(); |
| cvm_oct_rx_initialize(); |
| |
| /* |
| * 150 uS: about 10 1500-byte packtes at 1GE. |
| */ |
| cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000); |
| |
| queue_delayed_work(cvm_oct_poll_queue, &cvm_oct_rx_refill_work, HZ); |
| |
| return 0; |
| } |
| |
| static void __exit cvm_oct_cleanup_module(void) |
| { |
| int port; |
| |
| /* Disable POW interrupt */ |
| cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), 0); |
| |
| cvmx_ipd_disable(); |
| |
| /* Free the interrupt handler */ |
| free_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, cvm_oct_device); |
| |
| atomic_inc_return(&cvm_oct_poll_queue_stopping); |
| cancel_delayed_work_sync(&cvm_oct_rx_refill_work); |
| |
| cvm_oct_rx_shutdown(); |
| cvm_oct_tx_shutdown(); |
| |
| cvmx_pko_disable(); |
| |
| /* Free the ethernet devices */ |
| for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) { |
| if (cvm_oct_device[port]) { |
| struct net_device *dev = cvm_oct_device[port]; |
| struct octeon_ethernet *priv = netdev_priv(dev); |
| cancel_delayed_work_sync(&priv->port_periodic_work); |
| |
| cvm_oct_tx_shutdown_dev(dev); |
| unregister_netdev(dev); |
| free_netdev(dev); |
| cvm_oct_device[port] = NULL; |
| } |
| } |
| |
| destroy_workqueue(cvm_oct_poll_queue); |
| |
| cvmx_pko_shutdown(); |
| |
| cvmx_ipd_free_ptr(); |
| |
| /* Free the HW pools */ |
| cvm_oct_mem_empty_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE, |
| num_packet_buffers); |
| cvm_oct_mem_empty_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE, |
| num_packet_buffers); |
| if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL) |
| cvm_oct_mem_empty_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL, |
| CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128); |
| } |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>"); |
| MODULE_DESCRIPTION("Cavium Networks Octeon ethernet driver."); |
| module_init(cvm_oct_init_module); |
| module_exit(cvm_oct_cleanup_module); |