Orange Pi5 kernel

// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2015-2018 Netronome Systems, Inc. */
 
/*
 * nfp_net_main.c
 * Netronome network device driver: Main entry point
 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com>
 *          Alejandro Lucero <alejandro.lucero@netronome.com>
 *          Jason McMullan <jason.mcmullan@netronome.com>
 *          Rolf Neugebauer <rolf.neugebauer@netronome.com>
 */
 
#include <linux/etherdevice.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/lockdep.h>
#include <linux/pci.h>
#include <linux/pci_regs.h>
#include <linux/msi.h>
#include <linux/random.h>
#include <linux/rtnetlink.h>
 
#include "nfpcore/nfp.h"
#include "nfpcore/nfp_cpp.h"
#include "nfpcore/nfp_nffw.h"
#include "nfpcore/nfp_nsp.h"
#include "nfpcore/nfp6000_pcie.h"
#include "nfp_app.h"
#include "nfp_net_ctrl.h"
#include "nfp_net_sriov.h"
#include "nfp_net.h"
#include "nfp_main.h"
#include "nfp_port.h"
 
#define NFP_PF_CSR_SLICE_SIZE	(32 * 1024)
 
/**
 * nfp_net_get_mac_addr() - Get the MAC address.
 * @pf:       NFP PF handle
 * @netdev:   net_device to set MAC address on
 * @port:     NFP port structure
 *
 * First try to get the MAC address from NSP ETH table. If that
 * fails generate a random address.
 */
void
nfp_net_get_mac_addr(struct nfp_pf *pf, struct net_device *netdev,
<------><------>     struct nfp_port *port)
{
<------>struct nfp_eth_table_port *eth_port;
 
<------>eth_port = __nfp_port_get_eth_port(port);
<------>if (!eth_port) {
<------><------>eth_hw_addr_random(netdev);
<------><------>return;
<------>}
 
<------>ether_addr_copy(netdev->dev_addr, eth_port->mac_addr);
<------>ether_addr_copy(netdev->perm_addr, eth_port->mac_addr);
}
 
static struct nfp_eth_table_port *
nfp_net_find_port(struct nfp_eth_table *eth_tbl, unsigned int index)
{
<------>int i;
 
<------>for (i = 0; eth_tbl && i < eth_tbl->count; i++)
<------><------>if (eth_tbl->ports[i].index == index)
<------><------><------>return &eth_tbl->ports[i];
 
<------>return NULL;
}
 
static int nfp_net_pf_get_num_ports(struct nfp_pf *pf)
{
<------>return nfp_pf_rtsym_read_optional(pf, "nfd_cfg_pf%u_num_ports", 1);
}
 
static int nfp_net_pf_get_app_id(struct nfp_pf *pf)
{
<------>return nfp_pf_rtsym_read_optional(pf, "_pf%u_net_app_id",
<------><------><------><------><------>  NFP_APP_CORE_NIC);
}
 
static void nfp_net_pf_free_vnic(struct nfp_pf *pf, struct nfp_net *nn)
{
<------>if (nfp_net_is_data_vnic(nn))
<------><------>nfp_app_vnic_free(pf->app, nn);
<------>nfp_port_free(nn->port);
<------>list_del(&nn->vnic_list);
<------>pf->num_vnics--;
<------>nfp_net_free(nn);
}
 
static void nfp_net_pf_free_vnics(struct nfp_pf *pf)
{
<------>struct nfp_net *nn, *next;
 
<------>list_for_each_entry_safe(nn, next, &pf->vnics, vnic_list)
<------><------>if (nfp_net_is_data_vnic(nn))
<------><------><------>nfp_net_pf_free_vnic(pf, nn);
}
 
static struct nfp_net *
nfp_net_pf_alloc_vnic(struct nfp_pf *pf, bool needs_netdev,
<------><------>      void __iomem *ctrl_bar, void __iomem *qc_bar,
<------><------>      int stride, unsigned int id)
{
<------>u32 tx_base, rx_base, n_tx_rings, n_rx_rings;
<------>struct nfp_net *nn;
<------>int err;
 
<------>tx_base = readl(ctrl_bar + NFP_NET_CFG_START_TXQ);
<------>rx_base = readl(ctrl_bar + NFP_NET_CFG_START_RXQ);
<------>n_tx_rings = readl(ctrl_bar + NFP_NET_CFG_MAX_TXRINGS);
<------>n_rx_rings = readl(ctrl_bar + NFP_NET_CFG_MAX_RXRINGS);
 
<------>/* Allocate and initialise the vNIC */
<------>nn = nfp_net_alloc(pf->pdev, ctrl_bar, needs_netdev,
<------><------><------>   n_tx_rings, n_rx_rings);
<------>if (IS_ERR(nn))
<------><------>return nn;
 
<------>nn->app = pf->app;
<------>nfp_net_get_fw_version(&nn->fw_ver, ctrl_bar);
<------>nn->tx_bar = qc_bar + tx_base * NFP_QCP_QUEUE_ADDR_SZ;
<------>nn->rx_bar = qc_bar + rx_base * NFP_QCP_QUEUE_ADDR_SZ;
<------>nn->dp.is_vf = 0;
<------>nn->stride_rx = stride;
<------>nn->stride_tx = stride;
 
<------>if (needs_netdev) {
<------><------>err = nfp_app_vnic_alloc(pf->app, nn, id);
<------><------>if (err) {
<------><------><------>nfp_net_free(nn);
<------><------><------>return ERR_PTR(err);
<------><------>}
<------>}
 
<------>pf->num_vnics++;
<------>list_add_tail(&nn->vnic_list, &pf->vnics);
 
<------>return nn;
}
 
static int
nfp_net_pf_init_vnic(struct nfp_pf *pf, struct nfp_net *nn, unsigned int id)
{
<------>int err;
 
<------>nn->id = id;
 
<------>if (nn->port) {
<------><------>err = nfp_devlink_port_register(pf->app, nn->port);
<------><------>if (err)
<------><------><------>return err;
<------>}
 
<------>err = nfp_net_init(nn);
<------>if (err)
<------><------>goto err_devlink_port_clean;
 
<------>nfp_net_debugfs_vnic_add(nn, pf->ddir);
 
<------>if (nn->port)
<------><------>nfp_devlink_port_type_eth_set(nn->port);
 
<------>nfp_net_info(nn);
 
<------>if (nfp_net_is_data_vnic(nn)) {
<------><------>err = nfp_app_vnic_init(pf->app, nn);
<------><------>if (err)
<------><------><------>goto err_devlink_port_type_clean;
<------>}
 
<------>return 0;
 
err_devlink_port_type_clean:
<------>if (nn->port)
<------><------>nfp_devlink_port_type_clear(nn->port);
<------>nfp_net_debugfs_dir_clean(&nn->debugfs_dir);
<------>nfp_net_clean(nn);
err_devlink_port_clean:
<------>if (nn->port)
<------><------>nfp_devlink_port_unregister(nn->port);
<------>return err;
}
 
static int
nfp_net_pf_alloc_vnics(struct nfp_pf *pf, void __iomem *ctrl_bar,
<------><------>       void __iomem *qc_bar, int stride)
{
<------>struct nfp_net *nn;
<------>unsigned int i;
<------>int err;
 
<------>for (i = 0; i < pf->max_data_vnics; i++) {
<------><------>nn = nfp_net_pf_alloc_vnic(pf, true, ctrl_bar, qc_bar,
<------><------><------><------><------>   stride, i);
<------><------>if (IS_ERR(nn)) {
<------><------><------>err = PTR_ERR(nn);
<------><------><------>goto err_free_prev;
<------><------>}
 
<------><------>ctrl_bar += NFP_PF_CSR_SLICE_SIZE;
 
<------><------>/* Kill the vNIC if app init marked it as invalid */
<------><------>if (nn->port && nn->port->type == NFP_PORT_INVALID)
<------><------><------>nfp_net_pf_free_vnic(pf, nn);
<------>}
 
<------>if (list_empty(&pf->vnics))
<------><------>return -ENODEV;
 
<------>return 0;
 
err_free_prev:
<------>nfp_net_pf_free_vnics(pf);
<------>return err;
}
 
static void nfp_net_pf_clean_vnic(struct nfp_pf *pf, struct nfp_net *nn)
{
<------>if (nfp_net_is_data_vnic(nn))
<------><------>nfp_app_vnic_clean(pf->app, nn);
<------>if (nn->port)
<------><------>nfp_devlink_port_type_clear(nn->port);
<------>nfp_net_debugfs_dir_clean(&nn->debugfs_dir);
<------>nfp_net_clean(nn);
<------>if (nn->port)
<------><------>nfp_devlink_port_unregister(nn->port);
}
 
static int nfp_net_pf_alloc_irqs(struct nfp_pf *pf)
{
<------>unsigned int wanted_irqs, num_irqs, vnics_left, irqs_left;
<------>struct nfp_net *nn;
 
<------>/* Get MSI-X vectors */
<------>wanted_irqs = 0;
<------>list_for_each_entry(nn, &pf->vnics, vnic_list)
<------><------>wanted_irqs += NFP_NET_NON_Q_VECTORS + nn->dp.num_r_vecs;
<------>pf->irq_entries = kcalloc(wanted_irqs, sizeof(*pf->irq_entries),
<------><------><------><------>  GFP_KERNEL);
<------>if (!pf->irq_entries)
<------><------>return -ENOMEM;
 
<------>num_irqs = nfp_net_irqs_alloc(pf->pdev, pf->irq_entries,
<------><------><------><------>      NFP_NET_MIN_VNIC_IRQS * pf->num_vnics,
<------><------><------><------>      wanted_irqs);
<------>if (!num_irqs) {
<------><------>nfp_warn(pf->cpp, "Unable to allocate MSI-X vectors\n");
<------><------>kfree(pf->irq_entries);
<------><------>return -ENOMEM;
<------>}
 
<------>/* Distribute IRQs to vNICs */
<------>irqs_left = num_irqs;
<------>vnics_left = pf->num_vnics;
<------>list_for_each_entry(nn, &pf->vnics, vnic_list) {
<------><------>unsigned int n;
 
<------><------>n = min(NFP_NET_NON_Q_VECTORS + nn->dp.num_r_vecs,
<------><------><------>DIV_ROUND_UP(irqs_left, vnics_left));
<------><------>nfp_net_irqs_assign(nn, &pf->irq_entries[num_irqs - irqs_left],
<------><------><------><------>    n);
<------><------>irqs_left -= n;
<------><------>vnics_left--;
<------>}
 
<------>return 0;
}
 
static void nfp_net_pf_free_irqs(struct nfp_pf *pf)
{
<------>nfp_net_irqs_disable(pf->pdev);
<------>kfree(pf->irq_entries);
}
 
static int nfp_net_pf_init_vnics(struct nfp_pf *pf)
{
<------>struct nfp_net *nn;
<------>unsigned int id;
<------>int err;
 
<------>/* Finish vNIC init and register */
<------>id = 0;
<------>list_for_each_entry(nn, &pf->vnics, vnic_list) {
<------><------>if (!nfp_net_is_data_vnic(nn))
<------><------><------>continue;
<------><------>err = nfp_net_pf_init_vnic(pf, nn, id);
<------><------>if (err)
<------><------><------>goto err_prev_deinit;
 
<------><------>id++;
<------>}
 
<------>return 0;
 
err_prev_deinit:
<------>list_for_each_entry_continue_reverse(nn, &pf->vnics, vnic_list)
<------><------>if (nfp_net_is_data_vnic(nn))
<------><------><------>nfp_net_pf_clean_vnic(pf, nn);
<------>return err;
}
 
static int
nfp_net_pf_app_init(struct nfp_pf *pf, u8 __iomem *qc_bar, unsigned int stride)
{
<------>u8 __iomem *ctrl_bar;
<------>int err;
 
<------>pf->app = nfp_app_alloc(pf, nfp_net_pf_get_app_id(pf));
<------>if (IS_ERR(pf->app))
<------><------>return PTR_ERR(pf->app);
 
<------>mutex_lock(&pf->lock);
<------>err = nfp_app_init(pf->app);
<------>mutex_unlock(&pf->lock);
<------>if (err)
<------><------>goto err_free;
 
<------>if (!nfp_app_needs_ctrl_vnic(pf->app))
<------><------>return 0;
 
<------>ctrl_bar = nfp_pf_map_rtsym(pf, "net.ctrl", "_pf%u_net_ctrl_bar",
<------><------><------><------>    NFP_PF_CSR_SLICE_SIZE, &pf->ctrl_vnic_bar);
<------>if (IS_ERR(ctrl_bar)) {
<------><------>nfp_err(pf->cpp, "Failed to find ctrl vNIC memory symbol\n");
<------><------>err = PTR_ERR(ctrl_bar);
<------><------>goto err_app_clean;
<------>}
 
<------>pf->ctrl_vnic =	nfp_net_pf_alloc_vnic(pf, false, ctrl_bar, qc_bar,
<------><------><------><------><------>      stride, 0);
<------>if (IS_ERR(pf->ctrl_vnic)) {
<------><------>err = PTR_ERR(pf->ctrl_vnic);
<------><------>goto err_unmap;
<------>}
 
<------>return 0;
 
err_unmap:
<------>nfp_cpp_area_release_free(pf->ctrl_vnic_bar);
err_app_clean:
<------>mutex_lock(&pf->lock);
<------>nfp_app_clean(pf->app);
<------>mutex_unlock(&pf->lock);
err_free:
<------>nfp_app_free(pf->app);
<------>pf->app = NULL;
<------>return err;
}
 
static void nfp_net_pf_app_clean(struct nfp_pf *pf)
{
<------>if (pf->ctrl_vnic) {
<------><------>nfp_net_pf_free_vnic(pf, pf->ctrl_vnic);
<------><------>nfp_cpp_area_release_free(pf->ctrl_vnic_bar);
<------>}
 
<------>mutex_lock(&pf->lock);
<------>nfp_app_clean(pf->app);
<------>mutex_unlock(&pf->lock);
 
<------>nfp_app_free(pf->app);
<------>pf->app = NULL;
}
 
static int nfp_net_pf_app_start_ctrl(struct nfp_pf *pf)
{
<------>int err;
 
<------>if (!pf->ctrl_vnic)
<------><------>return 0;
<------>err = nfp_net_pf_init_vnic(pf, pf->ctrl_vnic, 0);
<------>if (err)
<------><------>return err;
 
<------>err = nfp_ctrl_open(pf->ctrl_vnic);
<------>if (err)
<------><------>goto err_clean_ctrl;
 
<------>return 0;
 
err_clean_ctrl:
<------>nfp_net_pf_clean_vnic(pf, pf->ctrl_vnic);
<------>return err;
}
 
static void nfp_net_pf_app_stop_ctrl(struct nfp_pf *pf)
{
<------>if (!pf->ctrl_vnic)
<------><------>return;
<------>nfp_ctrl_close(pf->ctrl_vnic);
<------>nfp_net_pf_clean_vnic(pf, pf->ctrl_vnic);
}
 
static int nfp_net_pf_app_start(struct nfp_pf *pf)
{
<------>int err;
 
<------>err = nfp_net_pf_app_start_ctrl(pf);
<------>if (err)
<------><------>return err;
 
<------>err = nfp_app_start(pf->app, pf->ctrl_vnic);
<------>if (err)
<------><------>goto err_ctrl_stop;
 
<------>if (pf->num_vfs) {
<------><------>err = nfp_app_sriov_enable(pf->app, pf->num_vfs);
<------><------>if (err)
<------><------><------>goto err_app_stop;
<------>}
 
<------>return 0;
 
err_app_stop:
<------>nfp_app_stop(pf->app);
err_ctrl_stop:
<------>nfp_net_pf_app_stop_ctrl(pf);
<------>return err;
}
 
static void nfp_net_pf_app_stop(struct nfp_pf *pf)
{
<------>if (pf->num_vfs)
<------><------>nfp_app_sriov_disable(pf->app);
<------>nfp_app_stop(pf->app);
<------>nfp_net_pf_app_stop_ctrl(pf);
}
 
static void nfp_net_pci_unmap_mem(struct nfp_pf *pf)
{
<------>if (pf->vfcfg_tbl2_area)
<------><------>nfp_cpp_area_release_free(pf->vfcfg_tbl2_area);
<------>if (pf->vf_cfg_bar)
<------><------>nfp_cpp_area_release_free(pf->vf_cfg_bar);
<------>if (pf->mac_stats_bar)
<------><------>nfp_cpp_area_release_free(pf->mac_stats_bar);
<------>nfp_cpp_area_release_free(pf->qc_area);
<------>nfp_cpp_area_release_free(pf->data_vnic_bar);
}
 
static int nfp_net_pci_map_mem(struct nfp_pf *pf)
{
<------>u32 min_size, cpp_id;
<------>u8 __iomem *mem;
<------>int err;
 
<------>min_size = pf->max_data_vnics * NFP_PF_CSR_SLICE_SIZE;
<------>mem = nfp_pf_map_rtsym(pf, "net.bar0", "_pf%d_net_bar0",
<------><------><------>       min_size, &pf->data_vnic_bar);
<------>if (IS_ERR(mem)) {
<------><------>nfp_err(pf->cpp, "Failed to find data vNIC memory symbol\n");
<------><------>return PTR_ERR(mem);
<------>}
 
<------>if (pf->eth_tbl) {
<------><------>min_size =  NFP_MAC_STATS_SIZE * (pf->eth_tbl->max_index + 1);
<------><------>pf->mac_stats_mem = nfp_rtsym_map(pf->rtbl, "_mac_stats",
<------><------><------><------><------><------>  "net.macstats", min_size,
<------><------><------><------><------><------>  &pf->mac_stats_bar);
<------><------>if (IS_ERR(pf->mac_stats_mem)) {
<------><------><------>if (PTR_ERR(pf->mac_stats_mem) != -ENOENT) {
<------><------><------><------>err = PTR_ERR(pf->mac_stats_mem);
<------><------><------><------>goto err_unmap_ctrl;
<------><------><------>}
<------><------><------>pf->mac_stats_mem = NULL;
<------><------>}
<------>}
 
<------>pf->vf_cfg_mem = nfp_pf_map_rtsym(pf, "net.vfcfg", "_pf%d_net_vf_bar",
<------><------><------><------><------>  NFP_NET_CFG_BAR_SZ * pf->limit_vfs,
<------><------><------><------><------>  &pf->vf_cfg_bar);
<------>if (IS_ERR(pf->vf_cfg_mem)) {
<------><------>if (PTR_ERR(pf->vf_cfg_mem) != -ENOENT) {
<------><------><------>err = PTR_ERR(pf->vf_cfg_mem);
<------><------><------>goto err_unmap_mac_stats;
<------><------>}
<------><------>pf->vf_cfg_mem = NULL;
<------>}
 
<------>min_size = NFP_NET_VF_CFG_SZ * pf->limit_vfs + NFP_NET_VF_CFG_MB_SZ;
<------>pf->vfcfg_tbl2 = nfp_pf_map_rtsym(pf, "net.vfcfg_tbl2",
<------><------><------><------><------>  "_pf%d_net_vf_cfg2",
<------><------><------><------><------>  min_size, &pf->vfcfg_tbl2_area);
<------>if (IS_ERR(pf->vfcfg_tbl2)) {
<------><------>if (PTR_ERR(pf->vfcfg_tbl2) != -ENOENT) {
<------><------><------>err = PTR_ERR(pf->vfcfg_tbl2);
<------><------><------>goto err_unmap_vf_cfg;
<------><------>}
<------><------>pf->vfcfg_tbl2 = NULL;
<------>}
 
<------>cpp_id = NFP_CPP_ISLAND_ID(0, NFP_CPP_ACTION_RW, 0, 0);
<------>mem = nfp_cpp_map_area(pf->cpp, "net.qc", cpp_id, NFP_PCIE_QUEUE(0),
<------><------><------>       NFP_QCP_QUEUE_AREA_SZ, &pf->qc_area);
<------>if (IS_ERR(mem)) {
<------><------>nfp_err(pf->cpp, "Failed to map Queue Controller area.\n");
<------><------>err = PTR_ERR(mem);
<------><------>goto err_unmap_vfcfg_tbl2;
<------>}
 
<------>return 0;
 
err_unmap_vfcfg_tbl2:
<------>if (pf->vfcfg_tbl2_area)
<------><------>nfp_cpp_area_release_free(pf->vfcfg_tbl2_area);
err_unmap_vf_cfg:
<------>if (pf->vf_cfg_bar)
<------><------>nfp_cpp_area_release_free(pf->vf_cfg_bar);
err_unmap_mac_stats:
<------>if (pf->mac_stats_bar)
<------><------>nfp_cpp_area_release_free(pf->mac_stats_bar);
err_unmap_ctrl:
<------>nfp_cpp_area_release_free(pf->data_vnic_bar);
<------>return err;
}
 
static int
nfp_net_eth_port_update(struct nfp_cpp *cpp, struct nfp_port *port,
<------><------><------>struct nfp_eth_table *eth_table)
{
<------>struct nfp_eth_table_port *eth_port;
 
<------>ASSERT_RTNL();
 
<------>eth_port = nfp_net_find_port(eth_table, port->eth_id);
<------>if (!eth_port) {
<------><------>set_bit(NFP_PORT_CHANGED, &port->flags);
<------><------>nfp_warn(cpp, "Warning: port #%d not present after reconfig\n",
<------><------><------> port->eth_id);
<------><------>return -EIO;
<------>}
<------>if (eth_port->override_changed) {
<------><------>nfp_warn(cpp, "Port #%d config changed, unregistering. Driver reload required before port will be operational again.\n", port->eth_id);
<------><------>port->type = NFP_PORT_INVALID;
<------>}
 
<------>memcpy(port->eth_port, eth_port, sizeof(*eth_port));
 
<------>return 0;
}
 
int nfp_net_refresh_port_table_sync(struct nfp_pf *pf)
{
<------>struct nfp_eth_table *eth_table;
<------>struct nfp_net *nn, *next;
<------>struct nfp_port *port;
<------>int err;
 
<------>lockdep_assert_held(&pf->lock);
 
<------>/* Check for nfp_net_pci_remove() racing against us */
<------>if (list_empty(&pf->vnics))
<------><------>return 0;
 
<------>/* Update state of all ports */
<------>rtnl_lock();
<------>list_for_each_entry(port, &pf->ports, port_list)
<------><------>clear_bit(NFP_PORT_CHANGED, &port->flags);
 
<------>eth_table = nfp_eth_read_ports(pf->cpp);
<------>if (!eth_table) {
<------><------>list_for_each_entry(port, &pf->ports, port_list)
<------><------><------>if (__nfp_port_get_eth_port(port))
<------><------><------><------>set_bit(NFP_PORT_CHANGED, &port->flags);
<------><------>rtnl_unlock();
<------><------>nfp_err(pf->cpp, "Error refreshing port config!\n");
<------><------>return -EIO;
<------>}
 
<------>list_for_each_entry(port, &pf->ports, port_list)
<------><------>if (__nfp_port_get_eth_port(port))
<------><------><------>nfp_net_eth_port_update(pf->cpp, port, eth_table);
<------>rtnl_unlock();
 
<------>kfree(eth_table);
 
<------>/* Resync repr state. This may cause reprs to be removed. */
<------>err = nfp_reprs_resync_phys_ports(pf->app);
<------>if (err)
<------><------>return err;
 
<------>/* Shoot off the ports which became invalid */
<------>list_for_each_entry_safe(nn, next, &pf->vnics, vnic_list) {
<------><------>if (!nn->port || nn->port->type != NFP_PORT_INVALID)
<------><------><------>continue;
 
<------><------>nfp_net_pf_clean_vnic(pf, nn);
<------><------>nfp_net_pf_free_vnic(pf, nn);
<------>}
 
<------>return 0;
}
 
static void nfp_net_refresh_vnics(struct work_struct *work)
{
<------>struct nfp_pf *pf = container_of(work, struct nfp_pf,
<------><------><------><------><------> port_refresh_work);
 
<------>mutex_lock(&pf->lock);
<------>nfp_net_refresh_port_table_sync(pf);
<------>mutex_unlock(&pf->lock);
}
 
void nfp_net_refresh_port_table(struct nfp_port *port)
{
<------>struct nfp_pf *pf = port->app->pf;
 
<------>set_bit(NFP_PORT_CHANGED, &port->flags);
 
<------>queue_work(pf->wq, &pf->port_refresh_work);
}
 
int nfp_net_refresh_eth_port(struct nfp_port *port)
{
<------>struct nfp_cpp *cpp = port->app->cpp;
<------>struct nfp_eth_table *eth_table;
<------>int ret;
 
<------>clear_bit(NFP_PORT_CHANGED, &port->flags);
 
<------>eth_table = nfp_eth_read_ports(cpp);
<------>if (!eth_table) {
<------><------>set_bit(NFP_PORT_CHANGED, &port->flags);
<------><------>nfp_err(cpp, "Error refreshing port state table!\n");
<------><------>return -EIO;
<------>}
 
<------>ret = nfp_net_eth_port_update(cpp, port, eth_table);
 
<------>kfree(eth_table);
 
<------>return ret;
}
 
/*
 * PCI device functions
 */
int nfp_net_pci_probe(struct nfp_pf *pf)
{
<------>struct devlink *devlink = priv_to_devlink(pf);
<------>struct nfp_net_fw_version fw_ver;
<------>u8 __iomem *ctrl_bar, *qc_bar;
<------>int stride;
<------>int err;
 
<------>INIT_WORK(&pf->port_refresh_work, nfp_net_refresh_vnics);
 
<------>if (!pf->rtbl) {
<------><------>nfp_err(pf->cpp, "No %s, giving up.\n",
<------><------><------>pf->fw_loaded ? "symbol table" : "firmware found");
<------><------>return -EINVAL;
<------>}
 
<------>pf->max_data_vnics = nfp_net_pf_get_num_ports(pf);
<------>if ((int)pf->max_data_vnics < 0)
<------><------>return pf->max_data_vnics;
 
<------>err = nfp_net_pci_map_mem(pf);
<------>if (err)
<------><------>return err;
 
<------>ctrl_bar = nfp_cpp_area_iomem(pf->data_vnic_bar);
<------>qc_bar = nfp_cpp_area_iomem(pf->qc_area);
<------>if (!ctrl_bar || !qc_bar) {
<------><------>err = -EIO;
<------><------>goto err_unmap;
<------>}
 
<------>nfp_net_get_fw_version(&fw_ver, ctrl_bar);
<------>if (fw_ver.resv || fw_ver.class != NFP_NET_CFG_VERSION_CLASS_GENERIC) {
<------><------>nfp_err(pf->cpp, "Unknown Firmware ABI %d.%d.%d.%d\n",
<------><------><------>fw_ver.resv, fw_ver.class, fw_ver.major, fw_ver.minor);
<------><------>err = -EINVAL;
<------><------>goto err_unmap;
<------>}
 
<------>/* Determine stride */
<------>if (nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0, 1)) {
<------><------>stride = 2;
<------><------>nfp_warn(pf->cpp, "OBSOLETE Firmware detected - VF isolation not available\n");
<------>} else {
<------><------>switch (fw_ver.major) {
<------><------>case 1 ... 5:
<------><------><------>stride = 4;
<------><------><------>break;
<------><------>default:
<------><------><------>nfp_err(pf->cpp, "Unsupported Firmware ABI %d.%d.%d.%d\n",
<------><------><------><------>fw_ver.resv, fw_ver.class,
<------><------><------><------>fw_ver.major, fw_ver.minor);
<------><------><------>err = -EINVAL;
<------><------><------>goto err_unmap;
<------><------>}
<------>}
 
<------>err = nfp_net_pf_app_init(pf, qc_bar, stride);
<------>if (err)
<------><------>goto err_unmap;
 
<------>err = devlink_register(devlink, &pf->pdev->dev);
<------>if (err)
<------><------>goto err_app_clean;
 
<------>err = nfp_shared_buf_register(pf);
<------>if (err)
<------><------>goto err_devlink_unreg;
 
<------>err = nfp_devlink_params_register(pf);
<------>if (err)
<------><------>goto err_shared_buf_unreg;
 
<------>mutex_lock(&pf->lock);
<------>pf->ddir = nfp_net_debugfs_device_add(pf->pdev);
 
<------>/* Allocate the vnics and do basic init */
<------>err = nfp_net_pf_alloc_vnics(pf, ctrl_bar, qc_bar, stride);
<------>if (err)
<------><------>goto err_clean_ddir;
 
<------>err = nfp_net_pf_alloc_irqs(pf);
<------>if (err)
<------><------>goto err_free_vnics;
 
<------>err = nfp_net_pf_app_start(pf);
<------>if (err)
<------><------>goto err_free_irqs;
 
<------>err = nfp_net_pf_init_vnics(pf);
<------>if (err)
<------><------>goto err_stop_app;
 
<------>mutex_unlock(&pf->lock);
 
<------>return 0;
 
err_stop_app:
<------>nfp_net_pf_app_stop(pf);
err_free_irqs:
<------>nfp_net_pf_free_irqs(pf);
err_free_vnics:
<------>nfp_net_pf_free_vnics(pf);
err_clean_ddir:
<------>nfp_net_debugfs_dir_clean(&pf->ddir);
<------>mutex_unlock(&pf->lock);
<------>nfp_devlink_params_unregister(pf);
err_shared_buf_unreg:
<------>nfp_shared_buf_unregister(pf);
err_devlink_unreg:
<------>cancel_work_sync(&pf->port_refresh_work);
<------>devlink_unregister(devlink);
err_app_clean:
<------>nfp_net_pf_app_clean(pf);
err_unmap:
<------>nfp_net_pci_unmap_mem(pf);
<------>return err;
}
 
void nfp_net_pci_remove(struct nfp_pf *pf)
{
<------>struct nfp_net *nn, *next;
 
<------>mutex_lock(&pf->lock);
<------>list_for_each_entry_safe(nn, next, &pf->vnics, vnic_list) {
<------><------>if (!nfp_net_is_data_vnic(nn))
<------><------><------>continue;
<------><------>nfp_net_pf_clean_vnic(pf, nn);
<------><------>nfp_net_pf_free_vnic(pf, nn);
<------>}
 
<------>nfp_net_pf_app_stop(pf);
<------>/* stop app first, to avoid double free of ctrl vNIC's ddir */
<------>nfp_net_debugfs_dir_clean(&pf->ddir);
 
<------>mutex_unlock(&pf->lock);
 
<------>nfp_devlink_params_unregister(pf);
<------>nfp_shared_buf_unregister(pf);
<------>devlink_unregister(priv_to_devlink(pf));
 
<------>nfp_net_pf_free_irqs(pf);
<------>nfp_net_pf_app_clean(pf);
<------>nfp_net_pci_unmap_mem(pf);
 
<------>cancel_work_sync(&pf->port_refresh_work);
}