// SPDX-License-Identifier: GPL-2.0
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/*
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* This file is based on code from OCTEON SDK by Cavium Networks.
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*
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* Copyright (c) 2003-2007 Cavium Networks
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*/
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#include <linux/platform_device.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/phy.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/of_mdio.h>
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#include <linux/of_net.h>
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <net/dst.h>
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#include "octeon-ethernet.h"
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#include "ethernet-defines.h"
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#include "ethernet-mem.h"
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#include "ethernet-rx.h"
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#include "ethernet-tx.h"
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#include "ethernet-mdio.h"
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#include "ethernet-util.h"
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#define OCTEON_MAX_MTU 65392
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static int num_packet_buffers = 1024;
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module_param(num_packet_buffers, int, 0444);
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MODULE_PARM_DESC(num_packet_buffers, "\n"
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"\tNumber of packet buffers to allocate and store in the\n"
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"\tFPA. By default, 1024 packet buffers are used.\n");
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static int pow_receive_group = 15;
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module_param(pow_receive_group, int, 0444);
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MODULE_PARM_DESC(pow_receive_group, "\n"
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"\tPOW group to receive packets from. All ethernet hardware\n"
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"\twill be configured to send incoming packets to this POW\n"
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"\tgroup. Also any other software can submit packets to this\n"
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"\tgroup for the kernel to process.");
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static int receive_group_order;
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module_param(receive_group_order, int, 0444);
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MODULE_PARM_DESC(receive_group_order, "\n"
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"\tOrder (0..4) of receive groups to take into use. Ethernet hardware\n"
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"\twill be configured to send incoming packets to multiple POW\n"
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"\tgroups. pow_receive_group parameter is ignored when multiple\n"
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"\tgroups are taken into use and groups are allocated starting\n"
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"\tfrom 0. By default, a single group is used.\n");
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int pow_send_group = -1;
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module_param(pow_send_group, int, 0644);
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MODULE_PARM_DESC(pow_send_group, "\n"
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"\tPOW group to send packets to other software on. This\n"
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"\tcontrols the creation of the virtual device pow0.\n"
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"\talways_use_pow also depends on this value.");
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int always_use_pow;
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module_param(always_use_pow, int, 0444);
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MODULE_PARM_DESC(always_use_pow, "\n"
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"\tWhen set, always send to the pow group. This will cause\n"
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"\tpackets sent to real ethernet devices to be sent to the\n"
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"\tPOW group instead of the hardware. Unless some other\n"
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"\tapplication changes the config, packets will still be\n"
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"\treceived from the low level hardware. Use this option\n"
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"\tto allow a CVMX app to intercept all packets from the\n"
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"\tlinux kernel. You must specify pow_send_group along with\n"
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"\tthis option.");
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char pow_send_list[128] = "";
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module_param_string(pow_send_list, pow_send_list, sizeof(pow_send_list), 0444);
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MODULE_PARM_DESC(pow_send_list, "\n"
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"\tComma separated list of ethernet devices that should use the\n"
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"\tPOW for transmit instead of the actual ethernet hardware. This\n"
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"\tis a per port version of always_use_pow. always_use_pow takes\n"
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"\tprecedence over this list. For example, setting this to\n"
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"\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n"
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"\tusing the pow_send_group.");
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int rx_napi_weight = 32;
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module_param(rx_napi_weight, int, 0444);
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MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter.");
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/* Mask indicating which receive groups are in use. */
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int pow_receive_groups;
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/*
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* cvm_oct_poll_queue_stopping - flag to indicate polling should stop.
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*
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* Set to one right before cvm_oct_poll_queue is destroyed.
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*/
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atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0);
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/*
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* Array of every ethernet device owned by this driver indexed by
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* the ipd input port number.
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*/
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struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS];
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u64 cvm_oct_tx_poll_interval;
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static void cvm_oct_rx_refill_worker(struct work_struct *work);
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static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker);
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static void cvm_oct_rx_refill_worker(struct work_struct *work)
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{
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/*
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* FPA 0 may have been drained, try to refill it if we need
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* more than num_packet_buffers / 2, otherwise normal receive
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* processing will refill it. If it were drained, no packets
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* could be received so cvm_oct_napi_poll would never be
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* invoked to do the refill.
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*/
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cvm_oct_rx_refill_pool(num_packet_buffers / 2);
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if (!atomic_read(&cvm_oct_poll_queue_stopping))
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schedule_delayed_work(&cvm_oct_rx_refill_work, HZ);
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}
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static void cvm_oct_periodic_worker(struct work_struct *work)
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{
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struct octeon_ethernet *priv = container_of(work,
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struct octeon_ethernet,
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port_periodic_work.work);
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if (priv->poll)
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priv->poll(cvm_oct_device[priv->port]);
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cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats
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(cvm_oct_device[priv->port]);
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if (!atomic_read(&cvm_oct_poll_queue_stopping))
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schedule_delayed_work(&priv->port_periodic_work, HZ);
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}
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static void cvm_oct_configure_common_hw(void)
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{
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/* Setup the FPA */
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cvmx_fpa_enable();
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cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
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num_packet_buffers);
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cvm_oct_mem_fill_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
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num_packet_buffers);
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if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
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cvm_oct_mem_fill_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
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CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 1024);
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#ifdef __LITTLE_ENDIAN
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{
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union cvmx_ipd_ctl_status ipd_ctl_status;
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ipd_ctl_status.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS);
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ipd_ctl_status.s.pkt_lend = 1;
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ipd_ctl_status.s.wqe_lend = 1;
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cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_ctl_status.u64);
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}
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#endif
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cvmx_helper_setup_red(num_packet_buffers / 4, num_packet_buffers / 8);
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}
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/**
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* cvm_oct_free_work- Free a work queue entry
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*
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* @work_queue_entry: Work queue entry to free
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*
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* Returns Zero on success, Negative on failure.
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*/
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int cvm_oct_free_work(void *work_queue_entry)
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{
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struct cvmx_wqe *work = work_queue_entry;
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int segments = work->word2.s.bufs;
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union cvmx_buf_ptr segment_ptr = work->packet_ptr;
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while (segments--) {
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union cvmx_buf_ptr next_ptr = *(union cvmx_buf_ptr *)
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cvmx_phys_to_ptr(segment_ptr.s.addr - 8);
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if (unlikely(!segment_ptr.s.i))
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cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr),
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segment_ptr.s.pool,
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CVMX_FPA_PACKET_POOL_SIZE / 128);
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segment_ptr = next_ptr;
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}
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cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1);
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return 0;
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}
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EXPORT_SYMBOL(cvm_oct_free_work);
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/**
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* cvm_oct_common_get_stats - get the low level ethernet statistics
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* @dev: Device to get the statistics from
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*
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* Returns Pointer to the statistics
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*/
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static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev)
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{
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cvmx_pip_port_status_t rx_status;
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cvmx_pko_port_status_t tx_status;
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struct octeon_ethernet *priv = netdev_priv(dev);
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if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) {
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if (octeon_is_simulation()) {
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/* The simulator doesn't support statistics */
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memset(&rx_status, 0, sizeof(rx_status));
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memset(&tx_status, 0, sizeof(tx_status));
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} else {
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cvmx_pip_get_port_status(priv->port, 1, &rx_status);
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cvmx_pko_get_port_status(priv->port, 1, &tx_status);
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}
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dev->stats.rx_packets += rx_status.inb_packets;
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dev->stats.tx_packets += tx_status.packets;
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dev->stats.rx_bytes += rx_status.inb_octets;
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dev->stats.tx_bytes += tx_status.octets;
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dev->stats.multicast += rx_status.multicast_packets;
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dev->stats.rx_crc_errors += rx_status.inb_errors;
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dev->stats.rx_frame_errors += rx_status.fcs_align_err_packets;
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dev->stats.rx_dropped += rx_status.dropped_packets;
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}
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return &dev->stats;
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}
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/**
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* cvm_oct_common_change_mtu - change the link MTU
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* @dev: Device to change
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* @new_mtu: The new MTU
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*
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* Returns Zero on success
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*/
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static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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int interface = INTERFACE(priv->port);
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#if IS_ENABLED(CONFIG_VLAN_8021Q)
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int vlan_bytes = VLAN_HLEN;
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#else
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int vlan_bytes = 0;
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#endif
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int mtu_overhead = ETH_HLEN + ETH_FCS_LEN + vlan_bytes;
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dev->mtu = new_mtu;
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if ((interface < 2) &&
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(cvmx_helper_interface_get_mode(interface) !=
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CVMX_HELPER_INTERFACE_MODE_SPI)) {
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int index = INDEX(priv->port);
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/* Add ethernet header and FCS, and VLAN if configured. */
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int max_packet = new_mtu + mtu_overhead;
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if (OCTEON_IS_MODEL(OCTEON_CN3XXX) ||
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OCTEON_IS_MODEL(OCTEON_CN58XX)) {
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/* Signal errors on packets larger than the MTU */
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cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface),
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max_packet);
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} else {
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/*
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* Set the hardware to truncate packets larger
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* than the MTU and smaller the 64 bytes.
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*/
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union cvmx_pip_frm_len_chkx frm_len_chk;
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frm_len_chk.u64 = 0;
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frm_len_chk.s.minlen = VLAN_ETH_ZLEN;
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frm_len_chk.s.maxlen = max_packet;
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cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface),
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frm_len_chk.u64);
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}
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/*
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* Set the hardware to truncate packets larger than
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* the MTU. The jabber register must be set to a
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* multiple of 8 bytes, so round up.
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*/
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cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface),
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(max_packet + 7) & ~7u);
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}
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return 0;
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}
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/**
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* cvm_oct_common_set_multicast_list - set the multicast list
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* @dev: Device to work on
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*/
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static void cvm_oct_common_set_multicast_list(struct net_device *dev)
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{
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union cvmx_gmxx_prtx_cfg gmx_cfg;
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struct octeon_ethernet *priv = netdev_priv(dev);
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int interface = INTERFACE(priv->port);
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if ((interface < 2) &&
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(cvmx_helper_interface_get_mode(interface) !=
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CVMX_HELPER_INTERFACE_MODE_SPI)) {
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union cvmx_gmxx_rxx_adr_ctl control;
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int index = INDEX(priv->port);
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control.u64 = 0;
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control.s.bcst = 1; /* Allow broadcast MAC addresses */
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if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) ||
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(dev->flags & IFF_PROMISC))
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/* Force accept multicast packets */
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control.s.mcst = 2;
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else
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/* Force reject multicast packets */
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control.s.mcst = 1;
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if (dev->flags & IFF_PROMISC)
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/*
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* Reject matches if promisc. Since CAM is
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* shut off, should accept everything.
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*/
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control.s.cam_mode = 0;
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else
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/* Filter packets based on the CAM */
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control.s.cam_mode = 1;
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gmx_cfg.u64 =
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cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
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cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
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gmx_cfg.u64 & ~1ull);
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cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface),
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control.u64);
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if (dev->flags & IFF_PROMISC)
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cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
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(index, interface), 0);
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else
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cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
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(index, interface), 1);
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cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
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gmx_cfg.u64);
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}
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}
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static int cvm_oct_set_mac_filter(struct net_device *dev)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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union cvmx_gmxx_prtx_cfg gmx_cfg;
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int interface = INTERFACE(priv->port);
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if ((interface < 2) &&
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(cvmx_helper_interface_get_mode(interface) !=
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CVMX_HELPER_INTERFACE_MODE_SPI)) {
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int i;
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u8 *ptr = dev->dev_addr;
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u64 mac = 0;
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int index = INDEX(priv->port);
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for (i = 0; i < 6; i++)
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mac = (mac << 8) | (u64)ptr[i];
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gmx_cfg.u64 =
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cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
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cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
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gmx_cfg.u64 & ~1ull);
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cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac);
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cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface),
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ptr[0]);
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cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface),
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ptr[1]);
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cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface),
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ptr[2]);
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cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface),
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ptr[3]);
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cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface),
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ptr[4]);
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cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface),
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ptr[5]);
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cvm_oct_common_set_multicast_list(dev);
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cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
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gmx_cfg.u64);
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}
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return 0;
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}
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/**
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* cvm_oct_common_set_mac_address - set the hardware MAC address for a device
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* @dev: The device in question.
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* @addr: Socket address.
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*
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* Returns Zero on success
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*/
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static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr)
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{
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int r = eth_mac_addr(dev, addr);
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if (r)
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return r;
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return cvm_oct_set_mac_filter(dev);
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}
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/**
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* cvm_oct_common_init - per network device initialization
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* @dev: Device to initialize
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*
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* Returns Zero on success
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*/
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int cvm_oct_common_init(struct net_device *dev)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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const u8 *mac = NULL;
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if (priv->of_node)
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mac = of_get_mac_address(priv->of_node);
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if (!IS_ERR_OR_NULL(mac))
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ether_addr_copy(dev->dev_addr, mac);
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else
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eth_hw_addr_random(dev);
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/*
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* Force the interface to use the POW send if always_use_pow
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* was specified or it is in the pow send list.
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*/
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if ((pow_send_group != -1) &&
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(always_use_pow || strstr(pow_send_list, dev->name)))
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priv->queue = -1;
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if (priv->queue != -1)
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dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
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/* We do our own locking, Linux doesn't need to */
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dev->features |= NETIF_F_LLTX;
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dev->ethtool_ops = &cvm_oct_ethtool_ops;
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cvm_oct_set_mac_filter(dev);
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dev_set_mtu(dev, dev->mtu);
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/*
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* Zero out stats for port so we won't mistakenly show
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* counters from the bootloader.
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*/
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memset(dev->netdev_ops->ndo_get_stats(dev), 0,
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sizeof(struct net_device_stats));
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if (dev->netdev_ops->ndo_stop)
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dev->netdev_ops->ndo_stop(dev);
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return 0;
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}
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void cvm_oct_common_uninit(struct net_device *dev)
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{
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if (dev->phydev)
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phy_disconnect(dev->phydev);
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}
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int cvm_oct_common_open(struct net_device *dev,
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void (*link_poll)(struct net_device *))
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{
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union cvmx_gmxx_prtx_cfg gmx_cfg;
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struct octeon_ethernet *priv = netdev_priv(dev);
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int interface = INTERFACE(priv->port);
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int index = INDEX(priv->port);
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union cvmx_helper_link_info link_info;
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int rv;
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rv = cvm_oct_phy_setup_device(dev);
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if (rv)
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return rv;
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gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
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gmx_cfg.s.en = 1;
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if (octeon_has_feature(OCTEON_FEATURE_PKND))
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gmx_cfg.s.pknd = priv->port;
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cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
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if (octeon_is_simulation())
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return 0;
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if (dev->phydev) {
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int r = phy_read_status(dev->phydev);
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if (r == 0 && dev->phydev->link == 0)
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netif_carrier_off(dev);
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cvm_oct_adjust_link(dev);
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} else {
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link_info = cvmx_helper_link_get(priv->port);
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if (!link_info.s.link_up)
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netif_carrier_off(dev);
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priv->poll = link_poll;
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link_poll(dev);
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}
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return 0;
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}
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void cvm_oct_link_poll(struct net_device *dev)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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union cvmx_helper_link_info link_info;
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link_info = cvmx_helper_link_get(priv->port);
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if (link_info.u64 == priv->link_info)
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return;
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if (cvmx_helper_link_set(priv->port, link_info))
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link_info.u64 = priv->link_info;
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else
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priv->link_info = link_info.u64;
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if (link_info.s.link_up) {
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if (!netif_carrier_ok(dev))
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netif_carrier_on(dev);
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} else if (netif_carrier_ok(dev)) {
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netif_carrier_off(dev);
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}
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cvm_oct_note_carrier(priv, link_info);
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}
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static int cvm_oct_xaui_open(struct net_device *dev)
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{
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return cvm_oct_common_open(dev, cvm_oct_link_poll);
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}
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static const struct net_device_ops cvm_oct_npi_netdev_ops = {
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.ndo_init = cvm_oct_common_init,
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.ndo_uninit = cvm_oct_common_uninit,
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.ndo_start_xmit = cvm_oct_xmit,
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.ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
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.ndo_set_mac_address = cvm_oct_common_set_mac_address,
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.ndo_do_ioctl = cvm_oct_ioctl,
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.ndo_change_mtu = cvm_oct_common_change_mtu,
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.ndo_get_stats = cvm_oct_common_get_stats,
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#ifdef CONFIG_NET_POLL_CONTROLLER
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.ndo_poll_controller = cvm_oct_poll_controller,
|
#endif
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};
|
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static const struct net_device_ops cvm_oct_xaui_netdev_ops = {
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.ndo_init = cvm_oct_common_init,
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.ndo_uninit = cvm_oct_common_uninit,
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.ndo_open = cvm_oct_xaui_open,
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.ndo_stop = cvm_oct_common_stop,
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.ndo_start_xmit = cvm_oct_xmit,
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.ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
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.ndo_set_mac_address = cvm_oct_common_set_mac_address,
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.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_common_uninit,
|
.ndo_open = cvm_oct_sgmii_open,
|
.ndo_stop = cvm_oct_common_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_common_init,
|
.ndo_uninit = cvm_oct_common_uninit,
|
.ndo_open = cvm_oct_rgmii_open,
|
.ndo_stop = cvm_oct_common_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
|
};
|
|
static struct device_node *cvm_oct_of_get_child
|
(const struct device_node *parent, int reg_val)
|
{
|
struct device_node *node = NULL;
|
int size;
|
const __be32 *addr;
|
|
for (;;) {
|
node = of_get_next_child(parent, node);
|
if (!node)
|
break;
|
addr = of_get_property(node, "reg", &size);
|
if (addr && (be32_to_cpu(*addr) == reg_val))
|
break;
|
}
|
return node;
|
}
|
|
static struct device_node *cvm_oct_node_for_port(struct device_node *pip,
|
int interface, int port)
|
{
|
struct device_node *ni, *np;
|
|
ni = cvm_oct_of_get_child(pip, interface);
|
if (!ni)
|
return NULL;
|
|
np = cvm_oct_of_get_child(ni, port);
|
of_node_put(ni);
|
|
return np;
|
}
|
|
static void cvm_set_rgmii_delay(struct octeon_ethernet *priv, int iface,
|
int port)
|
{
|
struct device_node *np = priv->of_node;
|
u32 delay_value;
|
bool rx_delay;
|
bool tx_delay;
|
|
/* By default, both RX/TX delay is enabled in
|
* __cvmx_helper_rgmii_enable().
|
*/
|
rx_delay = true;
|
tx_delay = true;
|
|
if (!of_property_read_u32(np, "rx-delay", &delay_value)) {
|
cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(port, iface), delay_value);
|
rx_delay = delay_value > 0;
|
}
|
if (!of_property_read_u32(np, "tx-delay", &delay_value)) {
|
cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(port, iface), delay_value);
|
tx_delay = delay_value > 0;
|
}
|
|
if (!rx_delay && !tx_delay)
|
priv->phy_mode = PHY_INTERFACE_MODE_RGMII_ID;
|
else if (!rx_delay)
|
priv->phy_mode = PHY_INTERFACE_MODE_RGMII_RXID;
|
else if (!tx_delay)
|
priv->phy_mode = PHY_INTERFACE_MODE_RGMII_TXID;
|
else
|
priv->phy_mode = PHY_INTERFACE_MODE_RGMII;
|
}
|
|
static int cvm_oct_probe(struct platform_device *pdev)
|
{
|
int num_interfaces;
|
int interface;
|
int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE;
|
int qos;
|
struct device_node *pip;
|
int mtu_overhead = ETH_HLEN + ETH_FCS_LEN;
|
|
#if IS_ENABLED(CONFIG_VLAN_8021Q)
|
mtu_overhead += VLAN_HLEN;
|
#endif
|
|
pip = pdev->dev.of_node;
|
if (!pip) {
|
pr_err("Error: No 'pip' in /aliases\n");
|
return -EINVAL;
|
}
|
|
cvm_oct_configure_common_hw();
|
|
cvmx_helper_initialize_packet_io_global();
|
|
if (receive_group_order) {
|
if (receive_group_order > 4)
|
receive_group_order = 4;
|
pow_receive_groups = (1 << (1 << receive_group_order)) - 1;
|
} else {
|
pow_receive_groups = BIT(pow_receive_group);
|
}
|
|
/* 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));
|
|
if (receive_group_order) {
|
int tag_mask;
|
|
/* We support only 16 groups at the moment, so
|
* always disable the two additional "hidden"
|
* tag_mask bits on CN68XX.
|
*/
|
if (OCTEON_IS_MODEL(OCTEON_CN68XX))
|
pip_prt_tagx.u64 |= 0x3ull << 44;
|
|
tag_mask = ~((1 << receive_group_order) - 1);
|
pip_prt_tagx.s.grptagbase = 0;
|
pip_prt_tagx.s.grptagmask = tag_mask;
|
pip_prt_tagx.s.grptag = 1;
|
pip_prt_tagx.s.tag_mode = 0;
|
pip_prt_tagx.s.inc_prt_flag = 1;
|
pip_prt_tagx.s.ip6_dprt_flag = 1;
|
pip_prt_tagx.s.ip4_dprt_flag = 1;
|
pip_prt_tagx.s.ip6_sprt_flag = 1;
|
pip_prt_tagx.s.ip4_sprt_flag = 1;
|
pip_prt_tagx.s.ip6_dst_flag = 1;
|
pip_prt_tagx.s.ip4_dst_flag = 1;
|
pip_prt_tagx.s.ip6_src_flag = 1;
|
pip_prt_tagx.s.ip4_src_flag = 1;
|
pip_prt_tagx.s.grp = 0;
|
} else {
|
pip_prt_tagx.s.grptag = 0;
|
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;
|
|
dev = alloc_etherdev(sizeof(struct octeon_ethernet));
|
if (dev) {
|
/* Initialize the device private structure. */
|
struct octeon_ethernet *priv = netdev_priv(dev);
|
|
SET_NETDEV_DEV(dev, &pdev->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;
|
strscpy(dev->name, "pow%d", sizeof(dev->name));
|
for (qos = 0; qos < 16; qos++)
|
skb_queue_head_init(&priv->tx_free_list[qos]);
|
dev->min_mtu = VLAN_ETH_ZLEN - mtu_overhead;
|
dev->max_mtu = OCTEON_MAX_MTU - mtu_overhead;
|
|
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;
|
int port_index;
|
|
for (port_index = 0,
|
port = cvmx_helper_get_ipd_port(interface, 0);
|
port < cvmx_helper_get_ipd_port(interface, num_ports);
|
port_index++, 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. */
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
priv = netdev_priv(dev);
|
priv->netdev = dev;
|
priv->of_node = cvm_oct_node_for_port(pip, interface,
|
port_index);
|
|
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;
|
priv->phy_mode = PHY_INTERFACE_MODE_NA;
|
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);
|
dev->min_mtu = VLAN_ETH_ZLEN - mtu_overhead;
|
dev->max_mtu = OCTEON_MAX_MTU - mtu_overhead;
|
|
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;
|
strscpy(dev->name, "npi%d", sizeof(dev->name));
|
break;
|
|
case CVMX_HELPER_INTERFACE_MODE_XAUI:
|
dev->netdev_ops = &cvm_oct_xaui_netdev_ops;
|
strscpy(dev->name, "xaui%d", sizeof(dev->name));
|
break;
|
|
case CVMX_HELPER_INTERFACE_MODE_LOOP:
|
dev->netdev_ops = &cvm_oct_npi_netdev_ops;
|
strscpy(dev->name, "loop%d", sizeof(dev->name));
|
break;
|
|
case CVMX_HELPER_INTERFACE_MODE_SGMII:
|
priv->phy_mode = PHY_INTERFACE_MODE_SGMII;
|
dev->netdev_ops = &cvm_oct_sgmii_netdev_ops;
|
strscpy(dev->name, "eth%d", sizeof(dev->name));
|
break;
|
|
case CVMX_HELPER_INTERFACE_MODE_SPI:
|
dev->netdev_ops = &cvm_oct_spi_netdev_ops;
|
strscpy(dev->name, "spi%d", sizeof(dev->name));
|
break;
|
|
case CVMX_HELPER_INTERFACE_MODE_GMII:
|
priv->phy_mode = PHY_INTERFACE_MODE_GMII;
|
dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
|
strscpy(dev->name, "eth%d", sizeof(dev->name));
|
break;
|
|
case CVMX_HELPER_INTERFACE_MODE_RGMII:
|
dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
|
strscpy(dev->name, "eth%d", sizeof(dev->name));
|
cvm_set_rgmii_delay(priv, interface,
|
port_index);
|
break;
|
}
|
|
if (priv->of_node && of_phy_is_fixed_link(priv->of_node)) {
|
if (of_phy_register_fixed_link(priv->of_node)) {
|
netdev_err(dev, "Failed to register fixed link for interface %d, port %d\n",
|
interface, priv->port);
|
dev->netdev_ops = NULL;
|
}
|
}
|
|
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(u32);
|
schedule_delayed_work(&priv->port_periodic_work,
|
HZ);
|
}
|
}
|
}
|
|
cvm_oct_tx_initialize();
|
cvm_oct_rx_initialize();
|
|
/*
|
* 150 uS: about 10 1500-byte packets at 1GE.
|
*/
|
cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000);
|
|
schedule_delayed_work(&cvm_oct_rx_refill_work, HZ);
|
|
return 0;
|
}
|
|
static int cvm_oct_remove(struct platform_device *pdev)
|
{
|
int port;
|
|
cvmx_ipd_disable();
|
|
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;
|
}
|
}
|
|
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);
|
return 0;
|
}
|
|
static const struct of_device_id cvm_oct_match[] = {
|
{
|
.compatible = "cavium,octeon-3860-pip",
|
},
|
{},
|
};
|
MODULE_DEVICE_TABLE(of, cvm_oct_match);
|
|
static struct platform_driver cvm_oct_driver = {
|
.probe = cvm_oct_probe,
|
.remove = cvm_oct_remove,
|
.driver = {
|
.name = KBUILD_MODNAME,
|
.of_match_table = cvm_oct_match,
|
},
|
};
|
|
module_platform_driver(cvm_oct_driver);
|
|
MODULE_SOFTDEP("pre: mdio-cavium");
|
MODULE_LICENSE("GPL");
|
MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>");
|
MODULE_DESCRIPTION("Cavium Networks Octeon ethernet driver.");
|
