1a6a5580cSJeff Kirsher /* 2a6a5580cSJeff Kirsher * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. 3a6a5580cSJeff Kirsher * Copyright 2007 Nuova Systems, Inc. All rights reserved. 4a6a5580cSJeff Kirsher * 5a6a5580cSJeff Kirsher * This program is free software; you may redistribute it and/or modify 6a6a5580cSJeff Kirsher * it under the terms of the GNU General Public License as published by 7a6a5580cSJeff Kirsher * the Free Software Foundation; version 2 of the License. 8a6a5580cSJeff Kirsher * 9a6a5580cSJeff Kirsher * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 10a6a5580cSJeff Kirsher * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 11a6a5580cSJeff Kirsher * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 12a6a5580cSJeff Kirsher * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 13a6a5580cSJeff Kirsher * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 14a6a5580cSJeff Kirsher * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 15a6a5580cSJeff Kirsher * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 16a6a5580cSJeff Kirsher * SOFTWARE. 17a6a5580cSJeff Kirsher * 18a6a5580cSJeff Kirsher */ 19a6a5580cSJeff Kirsher 20a6a5580cSJeff Kirsher #include <linux/module.h> 21a6a5580cSJeff Kirsher #include <linux/kernel.h> 22a6a5580cSJeff Kirsher #include <linux/string.h> 23a6a5580cSJeff Kirsher #include <linux/errno.h> 24a6a5580cSJeff Kirsher #include <linux/types.h> 25a6a5580cSJeff Kirsher #include <linux/init.h> 26a6a5580cSJeff Kirsher #include <linux/interrupt.h> 27a6a5580cSJeff Kirsher #include <linux/workqueue.h> 28a6a5580cSJeff Kirsher #include <linux/pci.h> 29a6a5580cSJeff Kirsher #include <linux/netdevice.h> 30a6a5580cSJeff Kirsher #include <linux/etherdevice.h> 3101789349SJiri Pirko #include <linux/if.h> 32a6a5580cSJeff Kirsher #include <linux/if_ether.h> 33a6a5580cSJeff Kirsher #include <linux/if_vlan.h> 34a6a5580cSJeff Kirsher #include <linux/ethtool.h> 35a6a5580cSJeff Kirsher #include <linux/in.h> 36a6a5580cSJeff Kirsher #include <linux/ip.h> 37a6a5580cSJeff Kirsher #include <linux/ipv6.h> 38a6a5580cSJeff Kirsher #include <linux/tcp.h> 39a6a5580cSJeff Kirsher #include <linux/rtnetlink.h> 40a6a5580cSJeff Kirsher #include <linux/prefetch.h> 41a6a5580cSJeff Kirsher #include <net/ip6_checksum.h> 42a6a5580cSJeff Kirsher 43a6a5580cSJeff Kirsher #include "cq_enet_desc.h" 44a6a5580cSJeff Kirsher #include "vnic_dev.h" 45a6a5580cSJeff Kirsher #include "vnic_intr.h" 46a6a5580cSJeff Kirsher #include "vnic_stats.h" 47a6a5580cSJeff Kirsher #include "vnic_vic.h" 48a6a5580cSJeff Kirsher #include "enic_res.h" 49a6a5580cSJeff Kirsher #include "enic.h" 50a6a5580cSJeff Kirsher #include "enic_dev.h" 51a6a5580cSJeff Kirsher #include "enic_pp.h" 52a6a5580cSJeff Kirsher 53a6a5580cSJeff Kirsher #define ENIC_NOTIFY_TIMER_PERIOD (2 * HZ) 54a6a5580cSJeff Kirsher #define WQ_ENET_MAX_DESC_LEN (1 << WQ_ENET_LEN_BITS) 55a6a5580cSJeff Kirsher #define MAX_TSO (1 << 16) 56a6a5580cSJeff Kirsher #define ENIC_DESC_MAX_SPLITS (MAX_TSO / WQ_ENET_MAX_DESC_LEN + 1) 57a6a5580cSJeff Kirsher 58a6a5580cSJeff Kirsher #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */ 59a6a5580cSJeff Kirsher #define PCI_DEVICE_ID_CISCO_VIC_ENET_DYN 0x0044 /* enet dynamic vnic */ 603a4adef5SRoopa Prabhu #define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */ 61a6a5580cSJeff Kirsher 62a6a5580cSJeff Kirsher /* Supported devices */ 63a6a5580cSJeff Kirsher static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = { 64a6a5580cSJeff Kirsher { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) }, 65a6a5580cSJeff Kirsher { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_DYN) }, 663a4adef5SRoopa Prabhu { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_VF) }, 67a6a5580cSJeff Kirsher { 0, } /* end of table */ 68a6a5580cSJeff Kirsher }; 69a6a5580cSJeff Kirsher 70a6a5580cSJeff Kirsher MODULE_DESCRIPTION(DRV_DESCRIPTION); 71a6a5580cSJeff Kirsher MODULE_AUTHOR("Scott Feldman <scofeldm@cisco.com>"); 72a6a5580cSJeff Kirsher MODULE_LICENSE("GPL"); 73a6a5580cSJeff Kirsher MODULE_VERSION(DRV_VERSION); 74a6a5580cSJeff Kirsher MODULE_DEVICE_TABLE(pci, enic_id_table); 75a6a5580cSJeff Kirsher 76a6a5580cSJeff Kirsher struct enic_stat { 77a6a5580cSJeff Kirsher char name[ETH_GSTRING_LEN]; 78a6a5580cSJeff Kirsher unsigned int offset; 79a6a5580cSJeff Kirsher }; 80a6a5580cSJeff Kirsher 81a6a5580cSJeff Kirsher #define ENIC_TX_STAT(stat) \ 82a6a5580cSJeff Kirsher { .name = #stat, .offset = offsetof(struct vnic_tx_stats, stat) / 8 } 83a6a5580cSJeff Kirsher #define ENIC_RX_STAT(stat) \ 84a6a5580cSJeff Kirsher { .name = #stat, .offset = offsetof(struct vnic_rx_stats, stat) / 8 } 85a6a5580cSJeff Kirsher 86a6a5580cSJeff Kirsher static const struct enic_stat enic_tx_stats[] = { 87a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_frames_ok), 88a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_unicast_frames_ok), 89a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_multicast_frames_ok), 90a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_broadcast_frames_ok), 91a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_bytes_ok), 92a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_unicast_bytes_ok), 93a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_multicast_bytes_ok), 94a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_broadcast_bytes_ok), 95a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_drops), 96a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_errors), 97a6a5580cSJeff Kirsher ENIC_TX_STAT(tx_tso), 98a6a5580cSJeff Kirsher }; 99a6a5580cSJeff Kirsher 100a6a5580cSJeff Kirsher static const struct enic_stat enic_rx_stats[] = { 101a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_frames_ok), 102a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_frames_total), 103a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_unicast_frames_ok), 104a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_multicast_frames_ok), 105a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_broadcast_frames_ok), 106a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_bytes_ok), 107a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_unicast_bytes_ok), 108a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_multicast_bytes_ok), 109a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_broadcast_bytes_ok), 110a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_drop), 111a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_no_bufs), 112a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_errors), 113a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_rss), 114a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_crc_errors), 115a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_frames_64), 116a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_frames_127), 117a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_frames_255), 118a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_frames_511), 119a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_frames_1023), 120a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_frames_1518), 121a6a5580cSJeff Kirsher ENIC_RX_STAT(rx_frames_to_max), 122a6a5580cSJeff Kirsher }; 123a6a5580cSJeff Kirsher 124a6a5580cSJeff Kirsher static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats); 125a6a5580cSJeff Kirsher static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats); 126a6a5580cSJeff Kirsher 1273f192795SRoopa Prabhu int enic_is_dynamic(struct enic *enic) 128a6a5580cSJeff Kirsher { 129a6a5580cSJeff Kirsher return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_DYN; 130a6a5580cSJeff Kirsher } 131a6a5580cSJeff Kirsher 1328749b427SRoopa Prabhu int enic_sriov_enabled(struct enic *enic) 1338749b427SRoopa Prabhu { 1348749b427SRoopa Prabhu return (enic->priv_flags & ENIC_SRIOV_ENABLED) ? 1 : 0; 1358749b427SRoopa Prabhu } 1368749b427SRoopa Prabhu 1373a4adef5SRoopa Prabhu static int enic_is_sriov_vf(struct enic *enic) 1383a4adef5SRoopa Prabhu { 1393a4adef5SRoopa Prabhu return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_VF; 1403a4adef5SRoopa Prabhu } 1413a4adef5SRoopa Prabhu 142889d13f5SRoopa Prabhu int enic_is_valid_vf(struct enic *enic, int vf) 143889d13f5SRoopa Prabhu { 144889d13f5SRoopa Prabhu #ifdef CONFIG_PCI_IOV 145889d13f5SRoopa Prabhu return vf >= 0 && vf < enic->num_vfs; 146889d13f5SRoopa Prabhu #else 147889d13f5SRoopa Prabhu return 0; 148889d13f5SRoopa Prabhu #endif 149889d13f5SRoopa Prabhu } 150889d13f5SRoopa Prabhu 151a6a5580cSJeff Kirsher static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq) 152a6a5580cSJeff Kirsher { 153a6a5580cSJeff Kirsher return rq; 154a6a5580cSJeff Kirsher } 155a6a5580cSJeff Kirsher 156a6a5580cSJeff Kirsher static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq) 157a6a5580cSJeff Kirsher { 158a6a5580cSJeff Kirsher return enic->rq_count + wq; 159a6a5580cSJeff Kirsher } 160a6a5580cSJeff Kirsher 161a6a5580cSJeff Kirsher static inline unsigned int enic_legacy_io_intr(void) 162a6a5580cSJeff Kirsher { 163a6a5580cSJeff Kirsher return 0; 164a6a5580cSJeff Kirsher } 165a6a5580cSJeff Kirsher 166a6a5580cSJeff Kirsher static inline unsigned int enic_legacy_err_intr(void) 167a6a5580cSJeff Kirsher { 168a6a5580cSJeff Kirsher return 1; 169a6a5580cSJeff Kirsher } 170a6a5580cSJeff Kirsher 171a6a5580cSJeff Kirsher static inline unsigned int enic_legacy_notify_intr(void) 172a6a5580cSJeff Kirsher { 173a6a5580cSJeff Kirsher return 2; 174a6a5580cSJeff Kirsher } 175a6a5580cSJeff Kirsher 176a6a5580cSJeff Kirsher static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq) 177a6a5580cSJeff Kirsher { 178a6a5580cSJeff Kirsher return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset; 179a6a5580cSJeff Kirsher } 180a6a5580cSJeff Kirsher 181a6a5580cSJeff Kirsher static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq) 182a6a5580cSJeff Kirsher { 183a6a5580cSJeff Kirsher return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset; 184a6a5580cSJeff Kirsher } 185a6a5580cSJeff Kirsher 186a6a5580cSJeff Kirsher static inline unsigned int enic_msix_err_intr(struct enic *enic) 187a6a5580cSJeff Kirsher { 188a6a5580cSJeff Kirsher return enic->rq_count + enic->wq_count; 189a6a5580cSJeff Kirsher } 190a6a5580cSJeff Kirsher 191a6a5580cSJeff Kirsher static inline unsigned int enic_msix_notify_intr(struct enic *enic) 192a6a5580cSJeff Kirsher { 193a6a5580cSJeff Kirsher return enic->rq_count + enic->wq_count + 1; 194a6a5580cSJeff Kirsher } 195a6a5580cSJeff Kirsher 196a6a5580cSJeff Kirsher static int enic_get_settings(struct net_device *netdev, 197a6a5580cSJeff Kirsher struct ethtool_cmd *ecmd) 198a6a5580cSJeff Kirsher { 199a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 200a6a5580cSJeff Kirsher 201a6a5580cSJeff Kirsher ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE); 202a6a5580cSJeff Kirsher ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE); 203a6a5580cSJeff Kirsher ecmd->port = PORT_FIBRE; 204a6a5580cSJeff Kirsher ecmd->transceiver = XCVR_EXTERNAL; 205a6a5580cSJeff Kirsher 206a6a5580cSJeff Kirsher if (netif_carrier_ok(netdev)) { 207a6a5580cSJeff Kirsher ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev)); 208a6a5580cSJeff Kirsher ecmd->duplex = DUPLEX_FULL; 209a6a5580cSJeff Kirsher } else { 210a6a5580cSJeff Kirsher ethtool_cmd_speed_set(ecmd, -1); 211a6a5580cSJeff Kirsher ecmd->duplex = -1; 212a6a5580cSJeff Kirsher } 213a6a5580cSJeff Kirsher 214a6a5580cSJeff Kirsher ecmd->autoneg = AUTONEG_DISABLE; 215a6a5580cSJeff Kirsher 216a6a5580cSJeff Kirsher return 0; 217a6a5580cSJeff Kirsher } 218a6a5580cSJeff Kirsher 219a6a5580cSJeff Kirsher static void enic_get_drvinfo(struct net_device *netdev, 220a6a5580cSJeff Kirsher struct ethtool_drvinfo *drvinfo) 221a6a5580cSJeff Kirsher { 222a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 223a6a5580cSJeff Kirsher struct vnic_devcmd_fw_info *fw_info; 224a6a5580cSJeff Kirsher 225a6a5580cSJeff Kirsher enic_dev_fw_info(enic, &fw_info); 226a6a5580cSJeff Kirsher 227612a94d6SRick Jones strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); 228612a94d6SRick Jones strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version)); 229612a94d6SRick Jones strlcpy(drvinfo->fw_version, fw_info->fw_version, 230a6a5580cSJeff Kirsher sizeof(drvinfo->fw_version)); 231612a94d6SRick Jones strlcpy(drvinfo->bus_info, pci_name(enic->pdev), 232a6a5580cSJeff Kirsher sizeof(drvinfo->bus_info)); 233a6a5580cSJeff Kirsher } 234a6a5580cSJeff Kirsher 235a6a5580cSJeff Kirsher static void enic_get_strings(struct net_device *netdev, u32 stringset, u8 *data) 236a6a5580cSJeff Kirsher { 237a6a5580cSJeff Kirsher unsigned int i; 238a6a5580cSJeff Kirsher 239a6a5580cSJeff Kirsher switch (stringset) { 240a6a5580cSJeff Kirsher case ETH_SS_STATS: 241a6a5580cSJeff Kirsher for (i = 0; i < enic_n_tx_stats; i++) { 242a6a5580cSJeff Kirsher memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN); 243a6a5580cSJeff Kirsher data += ETH_GSTRING_LEN; 244a6a5580cSJeff Kirsher } 245a6a5580cSJeff Kirsher for (i = 0; i < enic_n_rx_stats; i++) { 246a6a5580cSJeff Kirsher memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN); 247a6a5580cSJeff Kirsher data += ETH_GSTRING_LEN; 248a6a5580cSJeff Kirsher } 249a6a5580cSJeff Kirsher break; 250a6a5580cSJeff Kirsher } 251a6a5580cSJeff Kirsher } 252a6a5580cSJeff Kirsher 253a6a5580cSJeff Kirsher static int enic_get_sset_count(struct net_device *netdev, int sset) 254a6a5580cSJeff Kirsher { 255a6a5580cSJeff Kirsher switch (sset) { 256a6a5580cSJeff Kirsher case ETH_SS_STATS: 257a6a5580cSJeff Kirsher return enic_n_tx_stats + enic_n_rx_stats; 258a6a5580cSJeff Kirsher default: 259a6a5580cSJeff Kirsher return -EOPNOTSUPP; 260a6a5580cSJeff Kirsher } 261a6a5580cSJeff Kirsher } 262a6a5580cSJeff Kirsher 263a6a5580cSJeff Kirsher static void enic_get_ethtool_stats(struct net_device *netdev, 264a6a5580cSJeff Kirsher struct ethtool_stats *stats, u64 *data) 265a6a5580cSJeff Kirsher { 266a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 267a6a5580cSJeff Kirsher struct vnic_stats *vstats; 268a6a5580cSJeff Kirsher unsigned int i; 269a6a5580cSJeff Kirsher 270a6a5580cSJeff Kirsher enic_dev_stats_dump(enic, &vstats); 271a6a5580cSJeff Kirsher 272a6a5580cSJeff Kirsher for (i = 0; i < enic_n_tx_stats; i++) 273a6a5580cSJeff Kirsher *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].offset]; 274a6a5580cSJeff Kirsher for (i = 0; i < enic_n_rx_stats; i++) 275a6a5580cSJeff Kirsher *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].offset]; 276a6a5580cSJeff Kirsher } 277a6a5580cSJeff Kirsher 278a6a5580cSJeff Kirsher static u32 enic_get_msglevel(struct net_device *netdev) 279a6a5580cSJeff Kirsher { 280a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 281a6a5580cSJeff Kirsher return enic->msg_enable; 282a6a5580cSJeff Kirsher } 283a6a5580cSJeff Kirsher 284a6a5580cSJeff Kirsher static void enic_set_msglevel(struct net_device *netdev, u32 value) 285a6a5580cSJeff Kirsher { 286a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 287a6a5580cSJeff Kirsher enic->msg_enable = value; 288a6a5580cSJeff Kirsher } 289a6a5580cSJeff Kirsher 290a6a5580cSJeff Kirsher static int enic_get_coalesce(struct net_device *netdev, 291a6a5580cSJeff Kirsher struct ethtool_coalesce *ecmd) 292a6a5580cSJeff Kirsher { 293a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 294a6a5580cSJeff Kirsher 295a6a5580cSJeff Kirsher ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs; 296a6a5580cSJeff Kirsher ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs; 297a6a5580cSJeff Kirsher 298a6a5580cSJeff Kirsher return 0; 299a6a5580cSJeff Kirsher } 300a6a5580cSJeff Kirsher 301a6a5580cSJeff Kirsher static int enic_set_coalesce(struct net_device *netdev, 302a6a5580cSJeff Kirsher struct ethtool_coalesce *ecmd) 303a6a5580cSJeff Kirsher { 304a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 305a6a5580cSJeff Kirsher u32 tx_coalesce_usecs; 306a6a5580cSJeff Kirsher u32 rx_coalesce_usecs; 307a6a5580cSJeff Kirsher unsigned int i, intr; 308a6a5580cSJeff Kirsher 309a6a5580cSJeff Kirsher tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs, 310a6a5580cSJeff Kirsher vnic_dev_get_intr_coal_timer_max(enic->vdev)); 311a6a5580cSJeff Kirsher rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs, 312a6a5580cSJeff Kirsher vnic_dev_get_intr_coal_timer_max(enic->vdev)); 313a6a5580cSJeff Kirsher 314a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 315a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 316a6a5580cSJeff Kirsher if (tx_coalesce_usecs != rx_coalesce_usecs) 317a6a5580cSJeff Kirsher return -EINVAL; 318a6a5580cSJeff Kirsher 319a6a5580cSJeff Kirsher intr = enic_legacy_io_intr(); 320a6a5580cSJeff Kirsher vnic_intr_coalescing_timer_set(&enic->intr[intr], 321a6a5580cSJeff Kirsher tx_coalesce_usecs); 322a6a5580cSJeff Kirsher break; 323a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 324a6a5580cSJeff Kirsher if (tx_coalesce_usecs != rx_coalesce_usecs) 325a6a5580cSJeff Kirsher return -EINVAL; 326a6a5580cSJeff Kirsher 327a6a5580cSJeff Kirsher vnic_intr_coalescing_timer_set(&enic->intr[0], 328a6a5580cSJeff Kirsher tx_coalesce_usecs); 329a6a5580cSJeff Kirsher break; 330a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 331a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 332a6a5580cSJeff Kirsher intr = enic_msix_wq_intr(enic, i); 333a6a5580cSJeff Kirsher vnic_intr_coalescing_timer_set(&enic->intr[intr], 334a6a5580cSJeff Kirsher tx_coalesce_usecs); 335a6a5580cSJeff Kirsher } 336a6a5580cSJeff Kirsher 337a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 338a6a5580cSJeff Kirsher intr = enic_msix_rq_intr(enic, i); 339a6a5580cSJeff Kirsher vnic_intr_coalescing_timer_set(&enic->intr[intr], 340a6a5580cSJeff Kirsher rx_coalesce_usecs); 341a6a5580cSJeff Kirsher } 342a6a5580cSJeff Kirsher 343a6a5580cSJeff Kirsher break; 344a6a5580cSJeff Kirsher default: 345a6a5580cSJeff Kirsher break; 346a6a5580cSJeff Kirsher } 347a6a5580cSJeff Kirsher 348a6a5580cSJeff Kirsher enic->tx_coalesce_usecs = tx_coalesce_usecs; 349a6a5580cSJeff Kirsher enic->rx_coalesce_usecs = rx_coalesce_usecs; 350a6a5580cSJeff Kirsher 351a6a5580cSJeff Kirsher return 0; 352a6a5580cSJeff Kirsher } 353a6a5580cSJeff Kirsher 354a6a5580cSJeff Kirsher static const struct ethtool_ops enic_ethtool_ops = { 355a6a5580cSJeff Kirsher .get_settings = enic_get_settings, 356a6a5580cSJeff Kirsher .get_drvinfo = enic_get_drvinfo, 357a6a5580cSJeff Kirsher .get_msglevel = enic_get_msglevel, 358a6a5580cSJeff Kirsher .set_msglevel = enic_set_msglevel, 359a6a5580cSJeff Kirsher .get_link = ethtool_op_get_link, 360a6a5580cSJeff Kirsher .get_strings = enic_get_strings, 361a6a5580cSJeff Kirsher .get_sset_count = enic_get_sset_count, 362a6a5580cSJeff Kirsher .get_ethtool_stats = enic_get_ethtool_stats, 363a6a5580cSJeff Kirsher .get_coalesce = enic_get_coalesce, 364a6a5580cSJeff Kirsher .set_coalesce = enic_set_coalesce, 365a6a5580cSJeff Kirsher }; 366a6a5580cSJeff Kirsher 367a6a5580cSJeff Kirsher static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) 368a6a5580cSJeff Kirsher { 369a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(wq->vdev); 370a6a5580cSJeff Kirsher 371a6a5580cSJeff Kirsher if (buf->sop) 372a6a5580cSJeff Kirsher pci_unmap_single(enic->pdev, buf->dma_addr, 373a6a5580cSJeff Kirsher buf->len, PCI_DMA_TODEVICE); 374a6a5580cSJeff Kirsher else 375a6a5580cSJeff Kirsher pci_unmap_page(enic->pdev, buf->dma_addr, 376a6a5580cSJeff Kirsher buf->len, PCI_DMA_TODEVICE); 377a6a5580cSJeff Kirsher 378a6a5580cSJeff Kirsher if (buf->os_buf) 379a6a5580cSJeff Kirsher dev_kfree_skb_any(buf->os_buf); 380a6a5580cSJeff Kirsher } 381a6a5580cSJeff Kirsher 382a6a5580cSJeff Kirsher static void enic_wq_free_buf(struct vnic_wq *wq, 383a6a5580cSJeff Kirsher struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque) 384a6a5580cSJeff Kirsher { 385a6a5580cSJeff Kirsher enic_free_wq_buf(wq, buf); 386a6a5580cSJeff Kirsher } 387a6a5580cSJeff Kirsher 388a6a5580cSJeff Kirsher static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, 389a6a5580cSJeff Kirsher u8 type, u16 q_number, u16 completed_index, void *opaque) 390a6a5580cSJeff Kirsher { 391a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(vdev); 392a6a5580cSJeff Kirsher 393a6a5580cSJeff Kirsher spin_lock(&enic->wq_lock[q_number]); 394a6a5580cSJeff Kirsher 395a6a5580cSJeff Kirsher vnic_wq_service(&enic->wq[q_number], cq_desc, 396a6a5580cSJeff Kirsher completed_index, enic_wq_free_buf, 397a6a5580cSJeff Kirsher opaque); 398a6a5580cSJeff Kirsher 399a6a5580cSJeff Kirsher if (netif_queue_stopped(enic->netdev) && 400a6a5580cSJeff Kirsher vnic_wq_desc_avail(&enic->wq[q_number]) >= 401a6a5580cSJeff Kirsher (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)) 402a6a5580cSJeff Kirsher netif_wake_queue(enic->netdev); 403a6a5580cSJeff Kirsher 404a6a5580cSJeff Kirsher spin_unlock(&enic->wq_lock[q_number]); 405a6a5580cSJeff Kirsher 406a6a5580cSJeff Kirsher return 0; 407a6a5580cSJeff Kirsher } 408a6a5580cSJeff Kirsher 409a6a5580cSJeff Kirsher static void enic_log_q_error(struct enic *enic) 410a6a5580cSJeff Kirsher { 411a6a5580cSJeff Kirsher unsigned int i; 412a6a5580cSJeff Kirsher u32 error_status; 413a6a5580cSJeff Kirsher 414a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 415a6a5580cSJeff Kirsher error_status = vnic_wq_error_status(&enic->wq[i]); 416a6a5580cSJeff Kirsher if (error_status) 417a6a5580cSJeff Kirsher netdev_err(enic->netdev, "WQ[%d] error_status %d\n", 418a6a5580cSJeff Kirsher i, error_status); 419a6a5580cSJeff Kirsher } 420a6a5580cSJeff Kirsher 421a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 422a6a5580cSJeff Kirsher error_status = vnic_rq_error_status(&enic->rq[i]); 423a6a5580cSJeff Kirsher if (error_status) 424a6a5580cSJeff Kirsher netdev_err(enic->netdev, "RQ[%d] error_status %d\n", 425a6a5580cSJeff Kirsher i, error_status); 426a6a5580cSJeff Kirsher } 427a6a5580cSJeff Kirsher } 428a6a5580cSJeff Kirsher 429a6a5580cSJeff Kirsher static void enic_msglvl_check(struct enic *enic) 430a6a5580cSJeff Kirsher { 431a6a5580cSJeff Kirsher u32 msg_enable = vnic_dev_msg_lvl(enic->vdev); 432a6a5580cSJeff Kirsher 433a6a5580cSJeff Kirsher if (msg_enable != enic->msg_enable) { 434a6a5580cSJeff Kirsher netdev_info(enic->netdev, "msg lvl changed from 0x%x to 0x%x\n", 435a6a5580cSJeff Kirsher enic->msg_enable, msg_enable); 436a6a5580cSJeff Kirsher enic->msg_enable = msg_enable; 437a6a5580cSJeff Kirsher } 438a6a5580cSJeff Kirsher } 439a6a5580cSJeff Kirsher 440a6a5580cSJeff Kirsher static void enic_mtu_check(struct enic *enic) 441a6a5580cSJeff Kirsher { 442a6a5580cSJeff Kirsher u32 mtu = vnic_dev_mtu(enic->vdev); 443a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 444a6a5580cSJeff Kirsher 445a6a5580cSJeff Kirsher if (mtu && mtu != enic->port_mtu) { 446a6a5580cSJeff Kirsher enic->port_mtu = mtu; 4477335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) { 448a6a5580cSJeff Kirsher mtu = max_t(int, ENIC_MIN_MTU, 449a6a5580cSJeff Kirsher min_t(int, ENIC_MAX_MTU, mtu)); 450a6a5580cSJeff Kirsher if (mtu != netdev->mtu) 451a6a5580cSJeff Kirsher schedule_work(&enic->change_mtu_work); 452a6a5580cSJeff Kirsher } else { 453a6a5580cSJeff Kirsher if (mtu < netdev->mtu) 454a6a5580cSJeff Kirsher netdev_warn(netdev, 455a6a5580cSJeff Kirsher "interface MTU (%d) set higher " 456a6a5580cSJeff Kirsher "than switch port MTU (%d)\n", 457a6a5580cSJeff Kirsher netdev->mtu, mtu); 458a6a5580cSJeff Kirsher } 459a6a5580cSJeff Kirsher } 460a6a5580cSJeff Kirsher } 461a6a5580cSJeff Kirsher 462a6a5580cSJeff Kirsher static void enic_link_check(struct enic *enic) 463a6a5580cSJeff Kirsher { 464a6a5580cSJeff Kirsher int link_status = vnic_dev_link_status(enic->vdev); 465a6a5580cSJeff Kirsher int carrier_ok = netif_carrier_ok(enic->netdev); 466a6a5580cSJeff Kirsher 467a6a5580cSJeff Kirsher if (link_status && !carrier_ok) { 468a6a5580cSJeff Kirsher netdev_info(enic->netdev, "Link UP\n"); 469a6a5580cSJeff Kirsher netif_carrier_on(enic->netdev); 470a6a5580cSJeff Kirsher } else if (!link_status && carrier_ok) { 471a6a5580cSJeff Kirsher netdev_info(enic->netdev, "Link DOWN\n"); 472a6a5580cSJeff Kirsher netif_carrier_off(enic->netdev); 473a6a5580cSJeff Kirsher } 474a6a5580cSJeff Kirsher } 475a6a5580cSJeff Kirsher 476a6a5580cSJeff Kirsher static void enic_notify_check(struct enic *enic) 477a6a5580cSJeff Kirsher { 478a6a5580cSJeff Kirsher enic_msglvl_check(enic); 479a6a5580cSJeff Kirsher enic_mtu_check(enic); 480a6a5580cSJeff Kirsher enic_link_check(enic); 481a6a5580cSJeff Kirsher } 482a6a5580cSJeff Kirsher 483a6a5580cSJeff Kirsher #define ENIC_TEST_INTR(pba, i) (pba & (1 << i)) 484a6a5580cSJeff Kirsher 485a6a5580cSJeff Kirsher static irqreturn_t enic_isr_legacy(int irq, void *data) 486a6a5580cSJeff Kirsher { 487a6a5580cSJeff Kirsher struct net_device *netdev = data; 488a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 489a6a5580cSJeff Kirsher unsigned int io_intr = enic_legacy_io_intr(); 490a6a5580cSJeff Kirsher unsigned int err_intr = enic_legacy_err_intr(); 491a6a5580cSJeff Kirsher unsigned int notify_intr = enic_legacy_notify_intr(); 492a6a5580cSJeff Kirsher u32 pba; 493a6a5580cSJeff Kirsher 494a6a5580cSJeff Kirsher vnic_intr_mask(&enic->intr[io_intr]); 495a6a5580cSJeff Kirsher 496a6a5580cSJeff Kirsher pba = vnic_intr_legacy_pba(enic->legacy_pba); 497a6a5580cSJeff Kirsher if (!pba) { 498a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[io_intr]); 499a6a5580cSJeff Kirsher return IRQ_NONE; /* not our interrupt */ 500a6a5580cSJeff Kirsher } 501a6a5580cSJeff Kirsher 502a6a5580cSJeff Kirsher if (ENIC_TEST_INTR(pba, notify_intr)) { 503a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[notify_intr]); 504a6a5580cSJeff Kirsher enic_notify_check(enic); 505a6a5580cSJeff Kirsher } 506a6a5580cSJeff Kirsher 507a6a5580cSJeff Kirsher if (ENIC_TEST_INTR(pba, err_intr)) { 508a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[err_intr]); 509a6a5580cSJeff Kirsher enic_log_q_error(enic); 510a6a5580cSJeff Kirsher /* schedule recovery from WQ/RQ error */ 511a6a5580cSJeff Kirsher schedule_work(&enic->reset); 512a6a5580cSJeff Kirsher return IRQ_HANDLED; 513a6a5580cSJeff Kirsher } 514a6a5580cSJeff Kirsher 515a6a5580cSJeff Kirsher if (ENIC_TEST_INTR(pba, io_intr)) { 516a6a5580cSJeff Kirsher if (napi_schedule_prep(&enic->napi[0])) 517a6a5580cSJeff Kirsher __napi_schedule(&enic->napi[0]); 518a6a5580cSJeff Kirsher } else { 519a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[io_intr]); 520a6a5580cSJeff Kirsher } 521a6a5580cSJeff Kirsher 522a6a5580cSJeff Kirsher return IRQ_HANDLED; 523a6a5580cSJeff Kirsher } 524a6a5580cSJeff Kirsher 525a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msi(int irq, void *data) 526a6a5580cSJeff Kirsher { 527a6a5580cSJeff Kirsher struct enic *enic = data; 528a6a5580cSJeff Kirsher 529a6a5580cSJeff Kirsher /* With MSI, there is no sharing of interrupts, so this is 530a6a5580cSJeff Kirsher * our interrupt and there is no need to ack it. The device 531a6a5580cSJeff Kirsher * is not providing per-vector masking, so the OS will not 532a6a5580cSJeff Kirsher * write to PCI config space to mask/unmask the interrupt. 533a6a5580cSJeff Kirsher * We're using mask_on_assertion for MSI, so the device 534a6a5580cSJeff Kirsher * automatically masks the interrupt when the interrupt is 535a6a5580cSJeff Kirsher * generated. Later, when exiting polling, the interrupt 536a6a5580cSJeff Kirsher * will be unmasked (see enic_poll). 537a6a5580cSJeff Kirsher * 538a6a5580cSJeff Kirsher * Also, the device uses the same PCIe Traffic Class (TC) 539a6a5580cSJeff Kirsher * for Memory Write data and MSI, so there are no ordering 540a6a5580cSJeff Kirsher * issues; the MSI will always arrive at the Root Complex 541a6a5580cSJeff Kirsher * _after_ corresponding Memory Writes (i.e. descriptor 542a6a5580cSJeff Kirsher * writes). 543a6a5580cSJeff Kirsher */ 544a6a5580cSJeff Kirsher 545a6a5580cSJeff Kirsher napi_schedule(&enic->napi[0]); 546a6a5580cSJeff Kirsher 547a6a5580cSJeff Kirsher return IRQ_HANDLED; 548a6a5580cSJeff Kirsher } 549a6a5580cSJeff Kirsher 550a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_rq(int irq, void *data) 551a6a5580cSJeff Kirsher { 552a6a5580cSJeff Kirsher struct napi_struct *napi = data; 553a6a5580cSJeff Kirsher 554a6a5580cSJeff Kirsher /* schedule NAPI polling for RQ cleanup */ 555a6a5580cSJeff Kirsher napi_schedule(napi); 556a6a5580cSJeff Kirsher 557a6a5580cSJeff Kirsher return IRQ_HANDLED; 558a6a5580cSJeff Kirsher } 559a6a5580cSJeff Kirsher 560a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_wq(int irq, void *data) 561a6a5580cSJeff Kirsher { 562a6a5580cSJeff Kirsher struct enic *enic = data; 563a6a5580cSJeff Kirsher unsigned int cq = enic_cq_wq(enic, 0); 564a6a5580cSJeff Kirsher unsigned int intr = enic_msix_wq_intr(enic, 0); 565a6a5580cSJeff Kirsher unsigned int wq_work_to_do = -1; /* no limit */ 566a6a5580cSJeff Kirsher unsigned int wq_work_done; 567a6a5580cSJeff Kirsher 568a6a5580cSJeff Kirsher wq_work_done = vnic_cq_service(&enic->cq[cq], 569a6a5580cSJeff Kirsher wq_work_to_do, enic_wq_service, NULL); 570a6a5580cSJeff Kirsher 571a6a5580cSJeff Kirsher vnic_intr_return_credits(&enic->intr[intr], 572a6a5580cSJeff Kirsher wq_work_done, 573a6a5580cSJeff Kirsher 1 /* unmask intr */, 574a6a5580cSJeff Kirsher 1 /* reset intr timer */); 575a6a5580cSJeff Kirsher 576a6a5580cSJeff Kirsher return IRQ_HANDLED; 577a6a5580cSJeff Kirsher } 578a6a5580cSJeff Kirsher 579a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_err(int irq, void *data) 580a6a5580cSJeff Kirsher { 581a6a5580cSJeff Kirsher struct enic *enic = data; 582a6a5580cSJeff Kirsher unsigned int intr = enic_msix_err_intr(enic); 583a6a5580cSJeff Kirsher 584a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[intr]); 585a6a5580cSJeff Kirsher 586a6a5580cSJeff Kirsher enic_log_q_error(enic); 587a6a5580cSJeff Kirsher 588a6a5580cSJeff Kirsher /* schedule recovery from WQ/RQ error */ 589a6a5580cSJeff Kirsher schedule_work(&enic->reset); 590a6a5580cSJeff Kirsher 591a6a5580cSJeff Kirsher return IRQ_HANDLED; 592a6a5580cSJeff Kirsher } 593a6a5580cSJeff Kirsher 594a6a5580cSJeff Kirsher static irqreturn_t enic_isr_msix_notify(int irq, void *data) 595a6a5580cSJeff Kirsher { 596a6a5580cSJeff Kirsher struct enic *enic = data; 597a6a5580cSJeff Kirsher unsigned int intr = enic_msix_notify_intr(enic); 598a6a5580cSJeff Kirsher 599a6a5580cSJeff Kirsher vnic_intr_return_all_credits(&enic->intr[intr]); 600a6a5580cSJeff Kirsher enic_notify_check(enic); 601a6a5580cSJeff Kirsher 602a6a5580cSJeff Kirsher return IRQ_HANDLED; 603a6a5580cSJeff Kirsher } 604a6a5580cSJeff Kirsher 605a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_cont(struct enic *enic, 606a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, 607a6a5580cSJeff Kirsher unsigned int len_left, int loopback) 608a6a5580cSJeff Kirsher { 6099e903e08SEric Dumazet const skb_frag_t *frag; 610a6a5580cSJeff Kirsher 611a6a5580cSJeff Kirsher /* Queue additional data fragments */ 612a6a5580cSJeff Kirsher for (frag = skb_shinfo(skb)->frags; len_left; frag++) { 6139e903e08SEric Dumazet len_left -= skb_frag_size(frag); 614a6a5580cSJeff Kirsher enic_queue_wq_desc_cont(wq, skb, 6154bf5adbfSIan Campbell skb_frag_dma_map(&enic->pdev->dev, 6169e903e08SEric Dumazet frag, 0, skb_frag_size(frag), 6175d6bcdfeSIan Campbell DMA_TO_DEVICE), 6189e903e08SEric Dumazet skb_frag_size(frag), 619a6a5580cSJeff Kirsher (len_left == 0), /* EOP? */ 620a6a5580cSJeff Kirsher loopback); 621a6a5580cSJeff Kirsher } 622a6a5580cSJeff Kirsher } 623a6a5580cSJeff Kirsher 624a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_vlan(struct enic *enic, 625a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, 626a6a5580cSJeff Kirsher int vlan_tag_insert, unsigned int vlan_tag, int loopback) 627a6a5580cSJeff Kirsher { 628a6a5580cSJeff Kirsher unsigned int head_len = skb_headlen(skb); 629a6a5580cSJeff Kirsher unsigned int len_left = skb->len - head_len; 630a6a5580cSJeff Kirsher int eop = (len_left == 0); 631a6a5580cSJeff Kirsher 632a6a5580cSJeff Kirsher /* Queue the main skb fragment. The fragments are no larger 633a6a5580cSJeff Kirsher * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less 634a6a5580cSJeff Kirsher * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor 635a6a5580cSJeff Kirsher * per fragment is queued. 636a6a5580cSJeff Kirsher */ 637a6a5580cSJeff Kirsher enic_queue_wq_desc(wq, skb, 638a6a5580cSJeff Kirsher pci_map_single(enic->pdev, skb->data, 639a6a5580cSJeff Kirsher head_len, PCI_DMA_TODEVICE), 640a6a5580cSJeff Kirsher head_len, 641a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, 642a6a5580cSJeff Kirsher eop, loopback); 643a6a5580cSJeff Kirsher 644a6a5580cSJeff Kirsher if (!eop) 645a6a5580cSJeff Kirsher enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); 646a6a5580cSJeff Kirsher } 647a6a5580cSJeff Kirsher 648a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_csum_l4(struct enic *enic, 649a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, 650a6a5580cSJeff Kirsher int vlan_tag_insert, unsigned int vlan_tag, int loopback) 651a6a5580cSJeff Kirsher { 652a6a5580cSJeff Kirsher unsigned int head_len = skb_headlen(skb); 653a6a5580cSJeff Kirsher unsigned int len_left = skb->len - head_len; 654a6a5580cSJeff Kirsher unsigned int hdr_len = skb_checksum_start_offset(skb); 655a6a5580cSJeff Kirsher unsigned int csum_offset = hdr_len + skb->csum_offset; 656a6a5580cSJeff Kirsher int eop = (len_left == 0); 657a6a5580cSJeff Kirsher 658a6a5580cSJeff Kirsher /* Queue the main skb fragment. The fragments are no larger 659a6a5580cSJeff Kirsher * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less 660a6a5580cSJeff Kirsher * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor 661a6a5580cSJeff Kirsher * per fragment is queued. 662a6a5580cSJeff Kirsher */ 663a6a5580cSJeff Kirsher enic_queue_wq_desc_csum_l4(wq, skb, 664a6a5580cSJeff Kirsher pci_map_single(enic->pdev, skb->data, 665a6a5580cSJeff Kirsher head_len, PCI_DMA_TODEVICE), 666a6a5580cSJeff Kirsher head_len, 667a6a5580cSJeff Kirsher csum_offset, 668a6a5580cSJeff Kirsher hdr_len, 669a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, 670a6a5580cSJeff Kirsher eop, loopback); 671a6a5580cSJeff Kirsher 672a6a5580cSJeff Kirsher if (!eop) 673a6a5580cSJeff Kirsher enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); 674a6a5580cSJeff Kirsher } 675a6a5580cSJeff Kirsher 676a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb_tso(struct enic *enic, 677a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss, 678a6a5580cSJeff Kirsher int vlan_tag_insert, unsigned int vlan_tag, int loopback) 679a6a5580cSJeff Kirsher { 680a6a5580cSJeff Kirsher unsigned int frag_len_left = skb_headlen(skb); 681a6a5580cSJeff Kirsher unsigned int len_left = skb->len - frag_len_left; 682a6a5580cSJeff Kirsher unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 683a6a5580cSJeff Kirsher int eop = (len_left == 0); 684a6a5580cSJeff Kirsher unsigned int len; 685a6a5580cSJeff Kirsher dma_addr_t dma_addr; 686a6a5580cSJeff Kirsher unsigned int offset = 0; 687a6a5580cSJeff Kirsher skb_frag_t *frag; 688a6a5580cSJeff Kirsher 689a6a5580cSJeff Kirsher /* Preload TCP csum field with IP pseudo hdr calculated 690a6a5580cSJeff Kirsher * with IP length set to zero. HW will later add in length 691a6a5580cSJeff Kirsher * to each TCP segment resulting from the TSO. 692a6a5580cSJeff Kirsher */ 693a6a5580cSJeff Kirsher 694a6a5580cSJeff Kirsher if (skb->protocol == cpu_to_be16(ETH_P_IP)) { 695a6a5580cSJeff Kirsher ip_hdr(skb)->check = 0; 696a6a5580cSJeff Kirsher tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr, 697a6a5580cSJeff Kirsher ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); 698a6a5580cSJeff Kirsher } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) { 699a6a5580cSJeff Kirsher tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, 700a6a5580cSJeff Kirsher &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); 701a6a5580cSJeff Kirsher } 702a6a5580cSJeff Kirsher 703a6a5580cSJeff Kirsher /* Queue WQ_ENET_MAX_DESC_LEN length descriptors 704a6a5580cSJeff Kirsher * for the main skb fragment 705a6a5580cSJeff Kirsher */ 706a6a5580cSJeff Kirsher while (frag_len_left) { 707a6a5580cSJeff Kirsher len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN); 708a6a5580cSJeff Kirsher dma_addr = pci_map_single(enic->pdev, skb->data + offset, 709a6a5580cSJeff Kirsher len, PCI_DMA_TODEVICE); 710a6a5580cSJeff Kirsher enic_queue_wq_desc_tso(wq, skb, 711a6a5580cSJeff Kirsher dma_addr, 712a6a5580cSJeff Kirsher len, 713a6a5580cSJeff Kirsher mss, hdr_len, 714a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, 715a6a5580cSJeff Kirsher eop && (len == frag_len_left), loopback); 716a6a5580cSJeff Kirsher frag_len_left -= len; 717a6a5580cSJeff Kirsher offset += len; 718a6a5580cSJeff Kirsher } 719a6a5580cSJeff Kirsher 720a6a5580cSJeff Kirsher if (eop) 721a6a5580cSJeff Kirsher return; 722a6a5580cSJeff Kirsher 723a6a5580cSJeff Kirsher /* Queue WQ_ENET_MAX_DESC_LEN length descriptors 724a6a5580cSJeff Kirsher * for additional data fragments 725a6a5580cSJeff Kirsher */ 726a6a5580cSJeff Kirsher for (frag = skb_shinfo(skb)->frags; len_left; frag++) { 7279e903e08SEric Dumazet len_left -= skb_frag_size(frag); 7289e903e08SEric Dumazet frag_len_left = skb_frag_size(frag); 7294bf5adbfSIan Campbell offset = 0; 730a6a5580cSJeff Kirsher 731a6a5580cSJeff Kirsher while (frag_len_left) { 732a6a5580cSJeff Kirsher len = min(frag_len_left, 733a6a5580cSJeff Kirsher (unsigned int)WQ_ENET_MAX_DESC_LEN); 7344bf5adbfSIan Campbell dma_addr = skb_frag_dma_map(&enic->pdev->dev, frag, 735a6a5580cSJeff Kirsher offset, len, 7365d6bcdfeSIan Campbell DMA_TO_DEVICE); 737a6a5580cSJeff Kirsher enic_queue_wq_desc_cont(wq, skb, 738a6a5580cSJeff Kirsher dma_addr, 739a6a5580cSJeff Kirsher len, 740a6a5580cSJeff Kirsher (len_left == 0) && 741a6a5580cSJeff Kirsher (len == frag_len_left), /* EOP? */ 742a6a5580cSJeff Kirsher loopback); 743a6a5580cSJeff Kirsher frag_len_left -= len; 744a6a5580cSJeff Kirsher offset += len; 745a6a5580cSJeff Kirsher } 746a6a5580cSJeff Kirsher } 747a6a5580cSJeff Kirsher } 748a6a5580cSJeff Kirsher 749a6a5580cSJeff Kirsher static inline void enic_queue_wq_skb(struct enic *enic, 750a6a5580cSJeff Kirsher struct vnic_wq *wq, struct sk_buff *skb) 751a6a5580cSJeff Kirsher { 752a6a5580cSJeff Kirsher unsigned int mss = skb_shinfo(skb)->gso_size; 753a6a5580cSJeff Kirsher unsigned int vlan_tag = 0; 754a6a5580cSJeff Kirsher int vlan_tag_insert = 0; 755a6a5580cSJeff Kirsher int loopback = 0; 756a6a5580cSJeff Kirsher 757a6a5580cSJeff Kirsher if (vlan_tx_tag_present(skb)) { 758a6a5580cSJeff Kirsher /* VLAN tag from trunking driver */ 759a6a5580cSJeff Kirsher vlan_tag_insert = 1; 760a6a5580cSJeff Kirsher vlan_tag = vlan_tx_tag_get(skb); 761a6a5580cSJeff Kirsher } else if (enic->loop_enable) { 762a6a5580cSJeff Kirsher vlan_tag = enic->loop_tag; 763a6a5580cSJeff Kirsher loopback = 1; 764a6a5580cSJeff Kirsher } 765a6a5580cSJeff Kirsher 766a6a5580cSJeff Kirsher if (mss) 767a6a5580cSJeff Kirsher enic_queue_wq_skb_tso(enic, wq, skb, mss, 768a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, loopback); 769a6a5580cSJeff Kirsher else if (skb->ip_summed == CHECKSUM_PARTIAL) 770a6a5580cSJeff Kirsher enic_queue_wq_skb_csum_l4(enic, wq, skb, 771a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, loopback); 772a6a5580cSJeff Kirsher else 773a6a5580cSJeff Kirsher enic_queue_wq_skb_vlan(enic, wq, skb, 774a6a5580cSJeff Kirsher vlan_tag_insert, vlan_tag, loopback); 775a6a5580cSJeff Kirsher } 776a6a5580cSJeff Kirsher 777a6a5580cSJeff Kirsher /* netif_tx_lock held, process context with BHs disabled, or BH */ 778a6a5580cSJeff Kirsher static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, 779a6a5580cSJeff Kirsher struct net_device *netdev) 780a6a5580cSJeff Kirsher { 781a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 782a6a5580cSJeff Kirsher struct vnic_wq *wq = &enic->wq[0]; 783a6a5580cSJeff Kirsher unsigned long flags; 784a6a5580cSJeff Kirsher 785a6a5580cSJeff Kirsher if (skb->len <= 0) { 786a6a5580cSJeff Kirsher dev_kfree_skb(skb); 787a6a5580cSJeff Kirsher return NETDEV_TX_OK; 788a6a5580cSJeff Kirsher } 789a6a5580cSJeff Kirsher 790a6a5580cSJeff Kirsher /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs, 791a6a5580cSJeff Kirsher * which is very likely. In the off chance it's going to take 792a6a5580cSJeff Kirsher * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb. 793a6a5580cSJeff Kirsher */ 794a6a5580cSJeff Kirsher 795a6a5580cSJeff Kirsher if (skb_shinfo(skb)->gso_size == 0 && 796a6a5580cSJeff Kirsher skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC && 797a6a5580cSJeff Kirsher skb_linearize(skb)) { 798a6a5580cSJeff Kirsher dev_kfree_skb(skb); 799a6a5580cSJeff Kirsher return NETDEV_TX_OK; 800a6a5580cSJeff Kirsher } 801a6a5580cSJeff Kirsher 802a6a5580cSJeff Kirsher spin_lock_irqsave(&enic->wq_lock[0], flags); 803a6a5580cSJeff Kirsher 804a6a5580cSJeff Kirsher if (vnic_wq_desc_avail(wq) < 805a6a5580cSJeff Kirsher skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) { 806a6a5580cSJeff Kirsher netif_stop_queue(netdev); 807a6a5580cSJeff Kirsher /* This is a hard error, log it */ 808a6a5580cSJeff Kirsher netdev_err(netdev, "BUG! Tx ring full when queue awake!\n"); 809a6a5580cSJeff Kirsher spin_unlock_irqrestore(&enic->wq_lock[0], flags); 810a6a5580cSJeff Kirsher return NETDEV_TX_BUSY; 811a6a5580cSJeff Kirsher } 812a6a5580cSJeff Kirsher 813a6a5580cSJeff Kirsher enic_queue_wq_skb(enic, wq, skb); 814a6a5580cSJeff Kirsher 815a6a5580cSJeff Kirsher if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS) 816a6a5580cSJeff Kirsher netif_stop_queue(netdev); 817a6a5580cSJeff Kirsher 818a6a5580cSJeff Kirsher spin_unlock_irqrestore(&enic->wq_lock[0], flags); 819a6a5580cSJeff Kirsher 820a6a5580cSJeff Kirsher return NETDEV_TX_OK; 821a6a5580cSJeff Kirsher } 822a6a5580cSJeff Kirsher 823a6a5580cSJeff Kirsher /* dev_base_lock rwlock held, nominally process context */ 824a6a5580cSJeff Kirsher static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev, 825a6a5580cSJeff Kirsher struct rtnl_link_stats64 *net_stats) 826a6a5580cSJeff Kirsher { 827a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 828a6a5580cSJeff Kirsher struct vnic_stats *stats; 829a6a5580cSJeff Kirsher 830a6a5580cSJeff Kirsher enic_dev_stats_dump(enic, &stats); 831a6a5580cSJeff Kirsher 832a6a5580cSJeff Kirsher net_stats->tx_packets = stats->tx.tx_frames_ok; 833a6a5580cSJeff Kirsher net_stats->tx_bytes = stats->tx.tx_bytes_ok; 834a6a5580cSJeff Kirsher net_stats->tx_errors = stats->tx.tx_errors; 835a6a5580cSJeff Kirsher net_stats->tx_dropped = stats->tx.tx_drops; 836a6a5580cSJeff Kirsher 837a6a5580cSJeff Kirsher net_stats->rx_packets = stats->rx.rx_frames_ok; 838a6a5580cSJeff Kirsher net_stats->rx_bytes = stats->rx.rx_bytes_ok; 839a6a5580cSJeff Kirsher net_stats->rx_errors = stats->rx.rx_errors; 840a6a5580cSJeff Kirsher net_stats->multicast = stats->rx.rx_multicast_frames_ok; 841a6a5580cSJeff Kirsher net_stats->rx_over_errors = enic->rq_truncated_pkts; 842a6a5580cSJeff Kirsher net_stats->rx_crc_errors = enic->rq_bad_fcs; 843a6a5580cSJeff Kirsher net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop; 844a6a5580cSJeff Kirsher 845a6a5580cSJeff Kirsher return net_stats; 846a6a5580cSJeff Kirsher } 847a6a5580cSJeff Kirsher 848a6a5580cSJeff Kirsher void enic_reset_addr_lists(struct enic *enic) 849a6a5580cSJeff Kirsher { 850a6a5580cSJeff Kirsher enic->mc_count = 0; 851a6a5580cSJeff Kirsher enic->uc_count = 0; 852a6a5580cSJeff Kirsher enic->flags = 0; 853a6a5580cSJeff Kirsher } 854a6a5580cSJeff Kirsher 855a6a5580cSJeff Kirsher static int enic_set_mac_addr(struct net_device *netdev, char *addr) 856a6a5580cSJeff Kirsher { 857a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 858a6a5580cSJeff Kirsher 8597335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) { 860a6a5580cSJeff Kirsher if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr)) 861a6a5580cSJeff Kirsher return -EADDRNOTAVAIL; 862a6a5580cSJeff Kirsher } else { 863a6a5580cSJeff Kirsher if (!is_valid_ether_addr(addr)) 864a6a5580cSJeff Kirsher return -EADDRNOTAVAIL; 865a6a5580cSJeff Kirsher } 866a6a5580cSJeff Kirsher 867a6a5580cSJeff Kirsher memcpy(netdev->dev_addr, addr, netdev->addr_len); 868a6a5580cSJeff Kirsher 869a6a5580cSJeff Kirsher return 0; 870a6a5580cSJeff Kirsher } 871a6a5580cSJeff Kirsher 872a6a5580cSJeff Kirsher static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p) 873a6a5580cSJeff Kirsher { 874a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 875a6a5580cSJeff Kirsher struct sockaddr *saddr = p; 876a6a5580cSJeff Kirsher char *addr = saddr->sa_data; 877a6a5580cSJeff Kirsher int err; 878a6a5580cSJeff Kirsher 879a6a5580cSJeff Kirsher if (netif_running(enic->netdev)) { 880a6a5580cSJeff Kirsher err = enic_dev_del_station_addr(enic); 881a6a5580cSJeff Kirsher if (err) 882a6a5580cSJeff Kirsher return err; 883a6a5580cSJeff Kirsher } 884a6a5580cSJeff Kirsher 885a6a5580cSJeff Kirsher err = enic_set_mac_addr(netdev, addr); 886a6a5580cSJeff Kirsher if (err) 887a6a5580cSJeff Kirsher return err; 888a6a5580cSJeff Kirsher 889a6a5580cSJeff Kirsher if (netif_running(enic->netdev)) { 890a6a5580cSJeff Kirsher err = enic_dev_add_station_addr(enic); 891a6a5580cSJeff Kirsher if (err) 892a6a5580cSJeff Kirsher return err; 893a6a5580cSJeff Kirsher } 894a6a5580cSJeff Kirsher 895a6a5580cSJeff Kirsher return err; 896a6a5580cSJeff Kirsher } 897a6a5580cSJeff Kirsher 898a6a5580cSJeff Kirsher static int enic_set_mac_address(struct net_device *netdev, void *p) 899a6a5580cSJeff Kirsher { 900a6a5580cSJeff Kirsher struct sockaddr *saddr = p; 901a6a5580cSJeff Kirsher char *addr = saddr->sa_data; 902a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 903a6a5580cSJeff Kirsher int err; 904a6a5580cSJeff Kirsher 905a6a5580cSJeff Kirsher err = enic_dev_del_station_addr(enic); 906a6a5580cSJeff Kirsher if (err) 907a6a5580cSJeff Kirsher return err; 908a6a5580cSJeff Kirsher 909a6a5580cSJeff Kirsher err = enic_set_mac_addr(netdev, addr); 910a6a5580cSJeff Kirsher if (err) 911a6a5580cSJeff Kirsher return err; 912a6a5580cSJeff Kirsher 913a6a5580cSJeff Kirsher return enic_dev_add_station_addr(enic); 914a6a5580cSJeff Kirsher } 915a6a5580cSJeff Kirsher 916a6a5580cSJeff Kirsher static void enic_update_multicast_addr_list(struct enic *enic) 917a6a5580cSJeff Kirsher { 918a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 919a6a5580cSJeff Kirsher struct netdev_hw_addr *ha; 920a6a5580cSJeff Kirsher unsigned int mc_count = netdev_mc_count(netdev); 921a6a5580cSJeff Kirsher u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN]; 922a6a5580cSJeff Kirsher unsigned int i, j; 923a6a5580cSJeff Kirsher 924a6a5580cSJeff Kirsher if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS) { 925a6a5580cSJeff Kirsher netdev_warn(netdev, "Registering only %d out of %d " 926a6a5580cSJeff Kirsher "multicast addresses\n", 927a6a5580cSJeff Kirsher ENIC_MULTICAST_PERFECT_FILTERS, mc_count); 928a6a5580cSJeff Kirsher mc_count = ENIC_MULTICAST_PERFECT_FILTERS; 929a6a5580cSJeff Kirsher } 930a6a5580cSJeff Kirsher 931a6a5580cSJeff Kirsher /* Is there an easier way? Trying to minimize to 932a6a5580cSJeff Kirsher * calls to add/del multicast addrs. We keep the 933a6a5580cSJeff Kirsher * addrs from the last call in enic->mc_addr and 934a6a5580cSJeff Kirsher * look for changes to add/del. 935a6a5580cSJeff Kirsher */ 936a6a5580cSJeff Kirsher 937a6a5580cSJeff Kirsher i = 0; 938a6a5580cSJeff Kirsher netdev_for_each_mc_addr(ha, netdev) { 939a6a5580cSJeff Kirsher if (i == mc_count) 940a6a5580cSJeff Kirsher break; 941a6a5580cSJeff Kirsher memcpy(mc_addr[i++], ha->addr, ETH_ALEN); 942a6a5580cSJeff Kirsher } 943a6a5580cSJeff Kirsher 944a6a5580cSJeff Kirsher for (i = 0; i < enic->mc_count; i++) { 945a6a5580cSJeff Kirsher for (j = 0; j < mc_count; j++) 9462e42e474SJoe Perches if (ether_addr_equal(enic->mc_addr[i], mc_addr[j])) 947a6a5580cSJeff Kirsher break; 948a6a5580cSJeff Kirsher if (j == mc_count) 949a6a5580cSJeff Kirsher enic_dev_del_addr(enic, enic->mc_addr[i]); 950a6a5580cSJeff Kirsher } 951a6a5580cSJeff Kirsher 952a6a5580cSJeff Kirsher for (i = 0; i < mc_count; i++) { 953a6a5580cSJeff Kirsher for (j = 0; j < enic->mc_count; j++) 9542e42e474SJoe Perches if (ether_addr_equal(mc_addr[i], enic->mc_addr[j])) 955a6a5580cSJeff Kirsher break; 956a6a5580cSJeff Kirsher if (j == enic->mc_count) 957a6a5580cSJeff Kirsher enic_dev_add_addr(enic, mc_addr[i]); 958a6a5580cSJeff Kirsher } 959a6a5580cSJeff Kirsher 960a6a5580cSJeff Kirsher /* Save the list to compare against next time 961a6a5580cSJeff Kirsher */ 962a6a5580cSJeff Kirsher 963a6a5580cSJeff Kirsher for (i = 0; i < mc_count; i++) 964a6a5580cSJeff Kirsher memcpy(enic->mc_addr[i], mc_addr[i], ETH_ALEN); 965a6a5580cSJeff Kirsher 966a6a5580cSJeff Kirsher enic->mc_count = mc_count; 967a6a5580cSJeff Kirsher } 968a6a5580cSJeff Kirsher 969a6a5580cSJeff Kirsher static void enic_update_unicast_addr_list(struct enic *enic) 970a6a5580cSJeff Kirsher { 971a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 972a6a5580cSJeff Kirsher struct netdev_hw_addr *ha; 973a6a5580cSJeff Kirsher unsigned int uc_count = netdev_uc_count(netdev); 974a6a5580cSJeff Kirsher u8 uc_addr[ENIC_UNICAST_PERFECT_FILTERS][ETH_ALEN]; 975a6a5580cSJeff Kirsher unsigned int i, j; 976a6a5580cSJeff Kirsher 977a6a5580cSJeff Kirsher if (uc_count > ENIC_UNICAST_PERFECT_FILTERS) { 978a6a5580cSJeff Kirsher netdev_warn(netdev, "Registering only %d out of %d " 979a6a5580cSJeff Kirsher "unicast addresses\n", 980a6a5580cSJeff Kirsher ENIC_UNICAST_PERFECT_FILTERS, uc_count); 981a6a5580cSJeff Kirsher uc_count = ENIC_UNICAST_PERFECT_FILTERS; 982a6a5580cSJeff Kirsher } 983a6a5580cSJeff Kirsher 984a6a5580cSJeff Kirsher /* Is there an easier way? Trying to minimize to 985a6a5580cSJeff Kirsher * calls to add/del unicast addrs. We keep the 986a6a5580cSJeff Kirsher * addrs from the last call in enic->uc_addr and 987a6a5580cSJeff Kirsher * look for changes to add/del. 988a6a5580cSJeff Kirsher */ 989a6a5580cSJeff Kirsher 990a6a5580cSJeff Kirsher i = 0; 991a6a5580cSJeff Kirsher netdev_for_each_uc_addr(ha, netdev) { 992a6a5580cSJeff Kirsher if (i == uc_count) 993a6a5580cSJeff Kirsher break; 994a6a5580cSJeff Kirsher memcpy(uc_addr[i++], ha->addr, ETH_ALEN); 995a6a5580cSJeff Kirsher } 996a6a5580cSJeff Kirsher 997a6a5580cSJeff Kirsher for (i = 0; i < enic->uc_count; i++) { 998a6a5580cSJeff Kirsher for (j = 0; j < uc_count; j++) 9992e42e474SJoe Perches if (ether_addr_equal(enic->uc_addr[i], uc_addr[j])) 1000a6a5580cSJeff Kirsher break; 1001a6a5580cSJeff Kirsher if (j == uc_count) 1002a6a5580cSJeff Kirsher enic_dev_del_addr(enic, enic->uc_addr[i]); 1003a6a5580cSJeff Kirsher } 1004a6a5580cSJeff Kirsher 1005a6a5580cSJeff Kirsher for (i = 0; i < uc_count; i++) { 1006a6a5580cSJeff Kirsher for (j = 0; j < enic->uc_count; j++) 10072e42e474SJoe Perches if (ether_addr_equal(uc_addr[i], enic->uc_addr[j])) 1008a6a5580cSJeff Kirsher break; 1009a6a5580cSJeff Kirsher if (j == enic->uc_count) 1010a6a5580cSJeff Kirsher enic_dev_add_addr(enic, uc_addr[i]); 1011a6a5580cSJeff Kirsher } 1012a6a5580cSJeff Kirsher 1013a6a5580cSJeff Kirsher /* Save the list to compare against next time 1014a6a5580cSJeff Kirsher */ 1015a6a5580cSJeff Kirsher 1016a6a5580cSJeff Kirsher for (i = 0; i < uc_count; i++) 1017a6a5580cSJeff Kirsher memcpy(enic->uc_addr[i], uc_addr[i], ETH_ALEN); 1018a6a5580cSJeff Kirsher 1019a6a5580cSJeff Kirsher enic->uc_count = uc_count; 1020a6a5580cSJeff Kirsher } 1021a6a5580cSJeff Kirsher 1022a6a5580cSJeff Kirsher /* netif_tx_lock held, BHs disabled */ 1023a6a5580cSJeff Kirsher static void enic_set_rx_mode(struct net_device *netdev) 1024a6a5580cSJeff Kirsher { 1025a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1026a6a5580cSJeff Kirsher int directed = 1; 1027a6a5580cSJeff Kirsher int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0; 1028a6a5580cSJeff Kirsher int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0; 1029a6a5580cSJeff Kirsher int promisc = (netdev->flags & IFF_PROMISC) || 1030a6a5580cSJeff Kirsher netdev_uc_count(netdev) > ENIC_UNICAST_PERFECT_FILTERS; 1031a6a5580cSJeff Kirsher int allmulti = (netdev->flags & IFF_ALLMULTI) || 1032a6a5580cSJeff Kirsher netdev_mc_count(netdev) > ENIC_MULTICAST_PERFECT_FILTERS; 1033a6a5580cSJeff Kirsher unsigned int flags = netdev->flags | 1034a6a5580cSJeff Kirsher (allmulti ? IFF_ALLMULTI : 0) | 1035a6a5580cSJeff Kirsher (promisc ? IFF_PROMISC : 0); 1036a6a5580cSJeff Kirsher 1037a6a5580cSJeff Kirsher if (enic->flags != flags) { 1038a6a5580cSJeff Kirsher enic->flags = flags; 1039a6a5580cSJeff Kirsher enic_dev_packet_filter(enic, directed, 1040a6a5580cSJeff Kirsher multicast, broadcast, promisc, allmulti); 1041a6a5580cSJeff Kirsher } 1042a6a5580cSJeff Kirsher 1043a6a5580cSJeff Kirsher if (!promisc) { 1044a6a5580cSJeff Kirsher enic_update_unicast_addr_list(enic); 1045a6a5580cSJeff Kirsher if (!allmulti) 1046a6a5580cSJeff Kirsher enic_update_multicast_addr_list(enic); 1047a6a5580cSJeff Kirsher } 1048a6a5580cSJeff Kirsher } 1049a6a5580cSJeff Kirsher 1050a6a5580cSJeff Kirsher /* netif_tx_lock held, BHs disabled */ 1051a6a5580cSJeff Kirsher static void enic_tx_timeout(struct net_device *netdev) 1052a6a5580cSJeff Kirsher { 1053a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1054a6a5580cSJeff Kirsher schedule_work(&enic->reset); 1055a6a5580cSJeff Kirsher } 1056a6a5580cSJeff Kirsher 1057a6a5580cSJeff Kirsher static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 1058a6a5580cSJeff Kirsher { 1059a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 10603f192795SRoopa Prabhu struct enic_port_profile *pp; 10613f192795SRoopa Prabhu int err; 1062a6a5580cSJeff Kirsher 10633f192795SRoopa Prabhu ENIC_PP_BY_INDEX(enic, vf, pp, &err); 10643f192795SRoopa Prabhu if (err) 10653f192795SRoopa Prabhu return err; 1066a6a5580cSJeff Kirsher 1067b8622cbdSRoopa Prabhu if (is_valid_ether_addr(mac) || is_zero_ether_addr(mac)) { 1068b4765833SRoopa Prabhu if (vf == PORT_SELF_VF) { 10693f192795SRoopa Prabhu memcpy(pp->vf_mac, mac, ETH_ALEN); 1070a6a5580cSJeff Kirsher return 0; 1071b4765833SRoopa Prabhu } else { 1072b4765833SRoopa Prabhu /* 1073b4765833SRoopa Prabhu * For sriov vf's set the mac in hw 1074b4765833SRoopa Prabhu */ 1075b4765833SRoopa Prabhu ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, 1076b4765833SRoopa Prabhu vnic_dev_set_mac_addr, mac); 1077b4765833SRoopa Prabhu return enic_dev_status_to_errno(err); 1078b4765833SRoopa Prabhu } 1079a6a5580cSJeff Kirsher } else 1080a6a5580cSJeff Kirsher return -EINVAL; 1081a6a5580cSJeff Kirsher } 1082a6a5580cSJeff Kirsher 1083a6a5580cSJeff Kirsher static int enic_set_vf_port(struct net_device *netdev, int vf, 1084a6a5580cSJeff Kirsher struct nlattr *port[]) 1085a6a5580cSJeff Kirsher { 1086a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1087a6a5580cSJeff Kirsher struct enic_port_profile prev_pp; 10883f192795SRoopa Prabhu struct enic_port_profile *pp; 1089a6a5580cSJeff Kirsher int err = 0, restore_pp = 1; 1090a6a5580cSJeff Kirsher 10913f192795SRoopa Prabhu ENIC_PP_BY_INDEX(enic, vf, pp, &err); 10923f192795SRoopa Prabhu if (err) 10933f192795SRoopa Prabhu return err; 1094a6a5580cSJeff Kirsher 1095a6a5580cSJeff Kirsher if (!port[IFLA_PORT_REQUEST]) 1096a6a5580cSJeff Kirsher return -EOPNOTSUPP; 1097a6a5580cSJeff Kirsher 10983f192795SRoopa Prabhu memcpy(&prev_pp, pp, sizeof(*enic->pp)); 10993f192795SRoopa Prabhu memset(pp, 0, sizeof(*enic->pp)); 1100a6a5580cSJeff Kirsher 11013f192795SRoopa Prabhu pp->set |= ENIC_SET_REQUEST; 11023f192795SRoopa Prabhu pp->request = nla_get_u8(port[IFLA_PORT_REQUEST]); 1103a6a5580cSJeff Kirsher 1104a6a5580cSJeff Kirsher if (port[IFLA_PORT_PROFILE]) { 11053f192795SRoopa Prabhu pp->set |= ENIC_SET_NAME; 11063f192795SRoopa Prabhu memcpy(pp->name, nla_data(port[IFLA_PORT_PROFILE]), 1107a6a5580cSJeff Kirsher PORT_PROFILE_MAX); 1108a6a5580cSJeff Kirsher } 1109a6a5580cSJeff Kirsher 1110a6a5580cSJeff Kirsher if (port[IFLA_PORT_INSTANCE_UUID]) { 11113f192795SRoopa Prabhu pp->set |= ENIC_SET_INSTANCE; 11123f192795SRoopa Prabhu memcpy(pp->instance_uuid, 1113a6a5580cSJeff Kirsher nla_data(port[IFLA_PORT_INSTANCE_UUID]), PORT_UUID_MAX); 1114a6a5580cSJeff Kirsher } 1115a6a5580cSJeff Kirsher 1116a6a5580cSJeff Kirsher if (port[IFLA_PORT_HOST_UUID]) { 11173f192795SRoopa Prabhu pp->set |= ENIC_SET_HOST; 11183f192795SRoopa Prabhu memcpy(pp->host_uuid, 1119a6a5580cSJeff Kirsher nla_data(port[IFLA_PORT_HOST_UUID]), PORT_UUID_MAX); 1120a6a5580cSJeff Kirsher } 1121a6a5580cSJeff Kirsher 1122b4765833SRoopa Prabhu if (vf == PORT_SELF_VF) { 1123a6a5580cSJeff Kirsher /* Special case handling: mac came from IFLA_VF_MAC */ 1124a6a5580cSJeff Kirsher if (!is_zero_ether_addr(prev_pp.vf_mac)) 11253f192795SRoopa Prabhu memcpy(pp->mac_addr, prev_pp.vf_mac, ETH_ALEN); 1126a6a5580cSJeff Kirsher 1127b4765833SRoopa Prabhu if (is_zero_ether_addr(netdev->dev_addr)) 1128da194316SDanny Kukawka eth_hw_addr_random(netdev); 1129b4765833SRoopa Prabhu } else { 1130b4765833SRoopa Prabhu /* SR-IOV VF: get mac from adapter */ 1131b4765833SRoopa Prabhu ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, 1132b4765833SRoopa Prabhu vnic_dev_get_mac_addr, pp->mac_addr); 1133b4765833SRoopa Prabhu if (err) { 1134b4765833SRoopa Prabhu netdev_err(netdev, "Error getting mac for vf %d\n", vf); 1135b4765833SRoopa Prabhu memcpy(pp, &prev_pp, sizeof(*pp)); 1136b4765833SRoopa Prabhu return enic_dev_status_to_errno(err); 1137b4765833SRoopa Prabhu } 1138b4765833SRoopa Prabhu } 1139a6a5580cSJeff Kirsher 11403f192795SRoopa Prabhu err = enic_process_set_pp_request(enic, vf, &prev_pp, &restore_pp); 1141a6a5580cSJeff Kirsher if (err) { 1142a6a5580cSJeff Kirsher if (restore_pp) { 1143a6a5580cSJeff Kirsher /* Things are still the way they were: Implicit 1144a6a5580cSJeff Kirsher * DISASSOCIATE failed 1145a6a5580cSJeff Kirsher */ 11463f192795SRoopa Prabhu memcpy(pp, &prev_pp, sizeof(*pp)); 1147a6a5580cSJeff Kirsher } else { 11483f192795SRoopa Prabhu memset(pp, 0, sizeof(*pp)); 11493f192795SRoopa Prabhu if (vf == PORT_SELF_VF) 1150a6a5580cSJeff Kirsher memset(netdev->dev_addr, 0, ETH_ALEN); 1151a6a5580cSJeff Kirsher } 1152a6a5580cSJeff Kirsher } else { 1153a6a5580cSJeff Kirsher /* Set flag to indicate that the port assoc/disassoc 1154a6a5580cSJeff Kirsher * request has been sent out to fw 1155a6a5580cSJeff Kirsher */ 11563f192795SRoopa Prabhu pp->set |= ENIC_PORT_REQUEST_APPLIED; 1157a6a5580cSJeff Kirsher 1158a6a5580cSJeff Kirsher /* If DISASSOCIATE, clean up all assigned/saved macaddresses */ 11593f192795SRoopa Prabhu if (pp->request == PORT_REQUEST_DISASSOCIATE) { 11603f192795SRoopa Prabhu memset(pp->mac_addr, 0, ETH_ALEN); 11613f192795SRoopa Prabhu if (vf == PORT_SELF_VF) 1162a6a5580cSJeff Kirsher memset(netdev->dev_addr, 0, ETH_ALEN); 1163a6a5580cSJeff Kirsher } 1164a6a5580cSJeff Kirsher } 1165a6a5580cSJeff Kirsher 1166b4765833SRoopa Prabhu if (vf == PORT_SELF_VF) 11673f192795SRoopa Prabhu memset(pp->vf_mac, 0, ETH_ALEN); 1168a6a5580cSJeff Kirsher 1169a6a5580cSJeff Kirsher return err; 1170a6a5580cSJeff Kirsher } 1171a6a5580cSJeff Kirsher 1172a6a5580cSJeff Kirsher static int enic_get_vf_port(struct net_device *netdev, int vf, 1173a6a5580cSJeff Kirsher struct sk_buff *skb) 1174a6a5580cSJeff Kirsher { 1175a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1176a6a5580cSJeff Kirsher u16 response = PORT_PROFILE_RESPONSE_SUCCESS; 11773f192795SRoopa Prabhu struct enic_port_profile *pp; 1178a6a5580cSJeff Kirsher int err; 1179a6a5580cSJeff Kirsher 11803f192795SRoopa Prabhu ENIC_PP_BY_INDEX(enic, vf, pp, &err); 1181a6a5580cSJeff Kirsher if (err) 1182a6a5580cSJeff Kirsher return err; 1183a6a5580cSJeff Kirsher 11843f192795SRoopa Prabhu if (!(pp->set & ENIC_PORT_REQUEST_APPLIED)) 11853f192795SRoopa Prabhu return -ENODATA; 11863f192795SRoopa Prabhu 11873f192795SRoopa Prabhu err = enic_process_get_pp_request(enic, vf, pp->request, &response); 11883f192795SRoopa Prabhu if (err) 11893f192795SRoopa Prabhu return err; 11903f192795SRoopa Prabhu 11911a106de6SDavid S. Miller if (nla_put_u16(skb, IFLA_PORT_REQUEST, pp->request) || 11921a106de6SDavid S. Miller nla_put_u16(skb, IFLA_PORT_RESPONSE, response) || 11931a106de6SDavid S. Miller ((pp->set & ENIC_SET_NAME) && 11941a106de6SDavid S. Miller nla_put(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX, pp->name)) || 11951a106de6SDavid S. Miller ((pp->set & ENIC_SET_INSTANCE) && 11961a106de6SDavid S. Miller nla_put(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX, 11971a106de6SDavid S. Miller pp->instance_uuid)) || 11981a106de6SDavid S. Miller ((pp->set & ENIC_SET_HOST) && 11991a106de6SDavid S. Miller nla_put(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX, pp->host_uuid))) 12001a106de6SDavid S. Miller goto nla_put_failure; 1201a6a5580cSJeff Kirsher return 0; 1202a6a5580cSJeff Kirsher 1203a6a5580cSJeff Kirsher nla_put_failure: 1204a6a5580cSJeff Kirsher return -EMSGSIZE; 1205a6a5580cSJeff Kirsher } 1206a6a5580cSJeff Kirsher 1207a6a5580cSJeff Kirsher static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) 1208a6a5580cSJeff Kirsher { 1209a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(rq->vdev); 1210a6a5580cSJeff Kirsher 1211a6a5580cSJeff Kirsher if (!buf->os_buf) 1212a6a5580cSJeff Kirsher return; 1213a6a5580cSJeff Kirsher 1214a6a5580cSJeff Kirsher pci_unmap_single(enic->pdev, buf->dma_addr, 1215a6a5580cSJeff Kirsher buf->len, PCI_DMA_FROMDEVICE); 1216a6a5580cSJeff Kirsher dev_kfree_skb_any(buf->os_buf); 1217a6a5580cSJeff Kirsher } 1218a6a5580cSJeff Kirsher 1219a6a5580cSJeff Kirsher static int enic_rq_alloc_buf(struct vnic_rq *rq) 1220a6a5580cSJeff Kirsher { 1221a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(rq->vdev); 1222a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1223a6a5580cSJeff Kirsher struct sk_buff *skb; 1224a6a5580cSJeff Kirsher unsigned int len = netdev->mtu + VLAN_ETH_HLEN; 1225a6a5580cSJeff Kirsher unsigned int os_buf_index = 0; 1226a6a5580cSJeff Kirsher dma_addr_t dma_addr; 1227a6a5580cSJeff Kirsher 1228a6a5580cSJeff Kirsher skb = netdev_alloc_skb_ip_align(netdev, len); 1229a6a5580cSJeff Kirsher if (!skb) 1230a6a5580cSJeff Kirsher return -ENOMEM; 1231a6a5580cSJeff Kirsher 1232a6a5580cSJeff Kirsher dma_addr = pci_map_single(enic->pdev, skb->data, 1233a6a5580cSJeff Kirsher len, PCI_DMA_FROMDEVICE); 1234a6a5580cSJeff Kirsher 1235a6a5580cSJeff Kirsher enic_queue_rq_desc(rq, skb, os_buf_index, 1236a6a5580cSJeff Kirsher dma_addr, len); 1237a6a5580cSJeff Kirsher 1238a6a5580cSJeff Kirsher return 0; 1239a6a5580cSJeff Kirsher } 1240a6a5580cSJeff Kirsher 1241a6a5580cSJeff Kirsher static void enic_rq_indicate_buf(struct vnic_rq *rq, 1242a6a5580cSJeff Kirsher struct cq_desc *cq_desc, struct vnic_rq_buf *buf, 1243a6a5580cSJeff Kirsher int skipped, void *opaque) 1244a6a5580cSJeff Kirsher { 1245a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(rq->vdev); 1246a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1247a6a5580cSJeff Kirsher struct sk_buff *skb; 1248a6a5580cSJeff Kirsher 1249a6a5580cSJeff Kirsher u8 type, color, eop, sop, ingress_port, vlan_stripped; 1250a6a5580cSJeff Kirsher u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof; 1251a6a5580cSJeff Kirsher u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; 1252a6a5580cSJeff Kirsher u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc; 1253a6a5580cSJeff Kirsher u8 packet_error; 1254a6a5580cSJeff Kirsher u16 q_number, completed_index, bytes_written, vlan_tci, checksum; 1255a6a5580cSJeff Kirsher u32 rss_hash; 1256a6a5580cSJeff Kirsher 1257a6a5580cSJeff Kirsher if (skipped) 1258a6a5580cSJeff Kirsher return; 1259a6a5580cSJeff Kirsher 1260a6a5580cSJeff Kirsher skb = buf->os_buf; 1261a6a5580cSJeff Kirsher prefetch(skb->data - NET_IP_ALIGN); 1262a6a5580cSJeff Kirsher pci_unmap_single(enic->pdev, buf->dma_addr, 1263a6a5580cSJeff Kirsher buf->len, PCI_DMA_FROMDEVICE); 1264a6a5580cSJeff Kirsher 1265a6a5580cSJeff Kirsher cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, 1266a6a5580cSJeff Kirsher &type, &color, &q_number, &completed_index, 1267a6a5580cSJeff Kirsher &ingress_port, &fcoe, &eop, &sop, &rss_type, 1268a6a5580cSJeff Kirsher &csum_not_calc, &rss_hash, &bytes_written, 1269a6a5580cSJeff Kirsher &packet_error, &vlan_stripped, &vlan_tci, &checksum, 1270a6a5580cSJeff Kirsher &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error, 1271a6a5580cSJeff Kirsher &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp, 1272a6a5580cSJeff Kirsher &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment, 1273a6a5580cSJeff Kirsher &fcs_ok); 1274a6a5580cSJeff Kirsher 1275a6a5580cSJeff Kirsher if (packet_error) { 1276a6a5580cSJeff Kirsher 1277a6a5580cSJeff Kirsher if (!fcs_ok) { 1278a6a5580cSJeff Kirsher if (bytes_written > 0) 1279a6a5580cSJeff Kirsher enic->rq_bad_fcs++; 1280a6a5580cSJeff Kirsher else if (bytes_written == 0) 1281a6a5580cSJeff Kirsher enic->rq_truncated_pkts++; 1282a6a5580cSJeff Kirsher } 1283a6a5580cSJeff Kirsher 1284a6a5580cSJeff Kirsher dev_kfree_skb_any(skb); 1285a6a5580cSJeff Kirsher 1286a6a5580cSJeff Kirsher return; 1287a6a5580cSJeff Kirsher } 1288a6a5580cSJeff Kirsher 1289a6a5580cSJeff Kirsher if (eop && bytes_written > 0) { 1290a6a5580cSJeff Kirsher 1291a6a5580cSJeff Kirsher /* Good receive 1292a6a5580cSJeff Kirsher */ 1293a6a5580cSJeff Kirsher 1294a6a5580cSJeff Kirsher skb_put(skb, bytes_written); 1295a6a5580cSJeff Kirsher skb->protocol = eth_type_trans(skb, netdev); 1296a6a5580cSJeff Kirsher 1297a6a5580cSJeff Kirsher if ((netdev->features & NETIF_F_RXCSUM) && !csum_not_calc) { 1298a6a5580cSJeff Kirsher skb->csum = htons(checksum); 1299a6a5580cSJeff Kirsher skb->ip_summed = CHECKSUM_COMPLETE; 1300a6a5580cSJeff Kirsher } 1301a6a5580cSJeff Kirsher 1302a6a5580cSJeff Kirsher if (vlan_stripped) 1303a6a5580cSJeff Kirsher __vlan_hwaccel_put_tag(skb, vlan_tci); 1304a6a5580cSJeff Kirsher 1305a6a5580cSJeff Kirsher if (netdev->features & NETIF_F_GRO) 1306a6a5580cSJeff Kirsher napi_gro_receive(&enic->napi[q_number], skb); 1307a6a5580cSJeff Kirsher else 1308a6a5580cSJeff Kirsher netif_receive_skb(skb); 1309a6a5580cSJeff Kirsher } else { 1310a6a5580cSJeff Kirsher 1311a6a5580cSJeff Kirsher /* Buffer overflow 1312a6a5580cSJeff Kirsher */ 1313a6a5580cSJeff Kirsher 1314a6a5580cSJeff Kirsher dev_kfree_skb_any(skb); 1315a6a5580cSJeff Kirsher } 1316a6a5580cSJeff Kirsher } 1317a6a5580cSJeff Kirsher 1318a6a5580cSJeff Kirsher static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, 1319a6a5580cSJeff Kirsher u8 type, u16 q_number, u16 completed_index, void *opaque) 1320a6a5580cSJeff Kirsher { 1321a6a5580cSJeff Kirsher struct enic *enic = vnic_dev_priv(vdev); 1322a6a5580cSJeff Kirsher 1323a6a5580cSJeff Kirsher vnic_rq_service(&enic->rq[q_number], cq_desc, 1324a6a5580cSJeff Kirsher completed_index, VNIC_RQ_RETURN_DESC, 1325a6a5580cSJeff Kirsher enic_rq_indicate_buf, opaque); 1326a6a5580cSJeff Kirsher 1327a6a5580cSJeff Kirsher return 0; 1328a6a5580cSJeff Kirsher } 1329a6a5580cSJeff Kirsher 1330a6a5580cSJeff Kirsher static int enic_poll(struct napi_struct *napi, int budget) 1331a6a5580cSJeff Kirsher { 1332a6a5580cSJeff Kirsher struct net_device *netdev = napi->dev; 1333a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1334a6a5580cSJeff Kirsher unsigned int cq_rq = enic_cq_rq(enic, 0); 1335a6a5580cSJeff Kirsher unsigned int cq_wq = enic_cq_wq(enic, 0); 1336a6a5580cSJeff Kirsher unsigned int intr = enic_legacy_io_intr(); 1337a6a5580cSJeff Kirsher unsigned int rq_work_to_do = budget; 1338a6a5580cSJeff Kirsher unsigned int wq_work_to_do = -1; /* no limit */ 1339a6a5580cSJeff Kirsher unsigned int work_done, rq_work_done, wq_work_done; 1340a6a5580cSJeff Kirsher int err; 1341a6a5580cSJeff Kirsher 1342a6a5580cSJeff Kirsher /* Service RQ (first) and WQ 1343a6a5580cSJeff Kirsher */ 1344a6a5580cSJeff Kirsher 1345a6a5580cSJeff Kirsher rq_work_done = vnic_cq_service(&enic->cq[cq_rq], 1346a6a5580cSJeff Kirsher rq_work_to_do, enic_rq_service, NULL); 1347a6a5580cSJeff Kirsher 1348a6a5580cSJeff Kirsher wq_work_done = vnic_cq_service(&enic->cq[cq_wq], 1349a6a5580cSJeff Kirsher wq_work_to_do, enic_wq_service, NULL); 1350a6a5580cSJeff Kirsher 1351a6a5580cSJeff Kirsher /* Accumulate intr event credits for this polling 1352a6a5580cSJeff Kirsher * cycle. An intr event is the completion of a 1353a6a5580cSJeff Kirsher * a WQ or RQ packet. 1354a6a5580cSJeff Kirsher */ 1355a6a5580cSJeff Kirsher 1356a6a5580cSJeff Kirsher work_done = rq_work_done + wq_work_done; 1357a6a5580cSJeff Kirsher 1358a6a5580cSJeff Kirsher if (work_done > 0) 1359a6a5580cSJeff Kirsher vnic_intr_return_credits(&enic->intr[intr], 1360a6a5580cSJeff Kirsher work_done, 1361a6a5580cSJeff Kirsher 0 /* don't unmask intr */, 1362a6a5580cSJeff Kirsher 0 /* don't reset intr timer */); 1363a6a5580cSJeff Kirsher 1364a6a5580cSJeff Kirsher err = vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); 1365a6a5580cSJeff Kirsher 1366a6a5580cSJeff Kirsher /* Buffer allocation failed. Stay in polling 1367a6a5580cSJeff Kirsher * mode so we can try to fill the ring again. 1368a6a5580cSJeff Kirsher */ 1369a6a5580cSJeff Kirsher 1370a6a5580cSJeff Kirsher if (err) 1371a6a5580cSJeff Kirsher rq_work_done = rq_work_to_do; 1372a6a5580cSJeff Kirsher 1373a6a5580cSJeff Kirsher if (rq_work_done < rq_work_to_do) { 1374a6a5580cSJeff Kirsher 1375a6a5580cSJeff Kirsher /* Some work done, but not enough to stay in polling, 1376a6a5580cSJeff Kirsher * exit polling 1377a6a5580cSJeff Kirsher */ 1378a6a5580cSJeff Kirsher 1379a6a5580cSJeff Kirsher napi_complete(napi); 1380a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[intr]); 1381a6a5580cSJeff Kirsher } 1382a6a5580cSJeff Kirsher 1383a6a5580cSJeff Kirsher return rq_work_done; 1384a6a5580cSJeff Kirsher } 1385a6a5580cSJeff Kirsher 1386a6a5580cSJeff Kirsher static int enic_poll_msix(struct napi_struct *napi, int budget) 1387a6a5580cSJeff Kirsher { 1388a6a5580cSJeff Kirsher struct net_device *netdev = napi->dev; 1389a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1390a6a5580cSJeff Kirsher unsigned int rq = (napi - &enic->napi[0]); 1391a6a5580cSJeff Kirsher unsigned int cq = enic_cq_rq(enic, rq); 1392a6a5580cSJeff Kirsher unsigned int intr = enic_msix_rq_intr(enic, rq); 1393a6a5580cSJeff Kirsher unsigned int work_to_do = budget; 1394a6a5580cSJeff Kirsher unsigned int work_done; 1395a6a5580cSJeff Kirsher int err; 1396a6a5580cSJeff Kirsher 1397a6a5580cSJeff Kirsher /* Service RQ 1398a6a5580cSJeff Kirsher */ 1399a6a5580cSJeff Kirsher 1400a6a5580cSJeff Kirsher work_done = vnic_cq_service(&enic->cq[cq], 1401a6a5580cSJeff Kirsher work_to_do, enic_rq_service, NULL); 1402a6a5580cSJeff Kirsher 1403a6a5580cSJeff Kirsher /* Return intr event credits for this polling 1404a6a5580cSJeff Kirsher * cycle. An intr event is the completion of a 1405a6a5580cSJeff Kirsher * RQ packet. 1406a6a5580cSJeff Kirsher */ 1407a6a5580cSJeff Kirsher 1408a6a5580cSJeff Kirsher if (work_done > 0) 1409a6a5580cSJeff Kirsher vnic_intr_return_credits(&enic->intr[intr], 1410a6a5580cSJeff Kirsher work_done, 1411a6a5580cSJeff Kirsher 0 /* don't unmask intr */, 1412a6a5580cSJeff Kirsher 0 /* don't reset intr timer */); 1413a6a5580cSJeff Kirsher 1414a6a5580cSJeff Kirsher err = vnic_rq_fill(&enic->rq[rq], enic_rq_alloc_buf); 1415a6a5580cSJeff Kirsher 1416a6a5580cSJeff Kirsher /* Buffer allocation failed. Stay in polling mode 1417a6a5580cSJeff Kirsher * so we can try to fill the ring again. 1418a6a5580cSJeff Kirsher */ 1419a6a5580cSJeff Kirsher 1420a6a5580cSJeff Kirsher if (err) 1421a6a5580cSJeff Kirsher work_done = work_to_do; 1422a6a5580cSJeff Kirsher 1423a6a5580cSJeff Kirsher if (work_done < work_to_do) { 1424a6a5580cSJeff Kirsher 1425a6a5580cSJeff Kirsher /* Some work done, but not enough to stay in polling, 1426a6a5580cSJeff Kirsher * exit polling 1427a6a5580cSJeff Kirsher */ 1428a6a5580cSJeff Kirsher 1429a6a5580cSJeff Kirsher napi_complete(napi); 1430a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[intr]); 1431a6a5580cSJeff Kirsher } 1432a6a5580cSJeff Kirsher 1433a6a5580cSJeff Kirsher return work_done; 1434a6a5580cSJeff Kirsher } 1435a6a5580cSJeff Kirsher 1436a6a5580cSJeff Kirsher static void enic_notify_timer(unsigned long data) 1437a6a5580cSJeff Kirsher { 1438a6a5580cSJeff Kirsher struct enic *enic = (struct enic *)data; 1439a6a5580cSJeff Kirsher 1440a6a5580cSJeff Kirsher enic_notify_check(enic); 1441a6a5580cSJeff Kirsher 1442a6a5580cSJeff Kirsher mod_timer(&enic->notify_timer, 1443a6a5580cSJeff Kirsher round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD)); 1444a6a5580cSJeff Kirsher } 1445a6a5580cSJeff Kirsher 1446a6a5580cSJeff Kirsher static void enic_free_intr(struct enic *enic) 1447a6a5580cSJeff Kirsher { 1448a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1449a6a5580cSJeff Kirsher unsigned int i; 1450a6a5580cSJeff Kirsher 1451a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1452a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1453a6a5580cSJeff Kirsher free_irq(enic->pdev->irq, netdev); 1454a6a5580cSJeff Kirsher break; 1455a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1456a6a5580cSJeff Kirsher free_irq(enic->pdev->irq, enic); 1457a6a5580cSJeff Kirsher break; 1458a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1459a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->msix); i++) 1460a6a5580cSJeff Kirsher if (enic->msix[i].requested) 1461a6a5580cSJeff Kirsher free_irq(enic->msix_entry[i].vector, 1462a6a5580cSJeff Kirsher enic->msix[i].devid); 1463a6a5580cSJeff Kirsher break; 1464a6a5580cSJeff Kirsher default: 1465a6a5580cSJeff Kirsher break; 1466a6a5580cSJeff Kirsher } 1467a6a5580cSJeff Kirsher } 1468a6a5580cSJeff Kirsher 1469a6a5580cSJeff Kirsher static int enic_request_intr(struct enic *enic) 1470a6a5580cSJeff Kirsher { 1471a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1472a6a5580cSJeff Kirsher unsigned int i, intr; 1473a6a5580cSJeff Kirsher int err = 0; 1474a6a5580cSJeff Kirsher 1475a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1476a6a5580cSJeff Kirsher 1477a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1478a6a5580cSJeff Kirsher 1479a6a5580cSJeff Kirsher err = request_irq(enic->pdev->irq, enic_isr_legacy, 1480a6a5580cSJeff Kirsher IRQF_SHARED, netdev->name, netdev); 1481a6a5580cSJeff Kirsher break; 1482a6a5580cSJeff Kirsher 1483a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1484a6a5580cSJeff Kirsher 1485a6a5580cSJeff Kirsher err = request_irq(enic->pdev->irq, enic_isr_msi, 1486a6a5580cSJeff Kirsher 0, netdev->name, enic); 1487a6a5580cSJeff Kirsher break; 1488a6a5580cSJeff Kirsher 1489a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1490a6a5580cSJeff Kirsher 1491a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1492a6a5580cSJeff Kirsher intr = enic_msix_rq_intr(enic, i); 14934505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 14944505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1495a6a5580cSJeff Kirsher "%.11s-rx-%d", netdev->name, i); 1496a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_rq; 1497a6a5580cSJeff Kirsher enic->msix[intr].devid = &enic->napi[i]; 1498a6a5580cSJeff Kirsher } 1499a6a5580cSJeff Kirsher 1500a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 1501a6a5580cSJeff Kirsher intr = enic_msix_wq_intr(enic, i); 15024505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 15034505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1504a6a5580cSJeff Kirsher "%.11s-tx-%d", netdev->name, i); 1505a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_wq; 1506a6a5580cSJeff Kirsher enic->msix[intr].devid = enic; 1507a6a5580cSJeff Kirsher } 1508a6a5580cSJeff Kirsher 1509a6a5580cSJeff Kirsher intr = enic_msix_err_intr(enic); 15104505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 15114505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1512a6a5580cSJeff Kirsher "%.11s-err", netdev->name); 1513a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_err; 1514a6a5580cSJeff Kirsher enic->msix[intr].devid = enic; 1515a6a5580cSJeff Kirsher 1516a6a5580cSJeff Kirsher intr = enic_msix_notify_intr(enic); 15174505f40aSDan Carpenter snprintf(enic->msix[intr].devname, 15184505f40aSDan Carpenter sizeof(enic->msix[intr].devname), 1519a6a5580cSJeff Kirsher "%.11s-notify", netdev->name); 1520a6a5580cSJeff Kirsher enic->msix[intr].isr = enic_isr_msix_notify; 1521a6a5580cSJeff Kirsher enic->msix[intr].devid = enic; 1522a6a5580cSJeff Kirsher 1523a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->msix); i++) 1524a6a5580cSJeff Kirsher enic->msix[i].requested = 0; 1525a6a5580cSJeff Kirsher 1526a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) { 1527a6a5580cSJeff Kirsher err = request_irq(enic->msix_entry[i].vector, 1528a6a5580cSJeff Kirsher enic->msix[i].isr, 0, 1529a6a5580cSJeff Kirsher enic->msix[i].devname, 1530a6a5580cSJeff Kirsher enic->msix[i].devid); 1531a6a5580cSJeff Kirsher if (err) { 1532a6a5580cSJeff Kirsher enic_free_intr(enic); 1533a6a5580cSJeff Kirsher break; 1534a6a5580cSJeff Kirsher } 1535a6a5580cSJeff Kirsher enic->msix[i].requested = 1; 1536a6a5580cSJeff Kirsher } 1537a6a5580cSJeff Kirsher 1538a6a5580cSJeff Kirsher break; 1539a6a5580cSJeff Kirsher 1540a6a5580cSJeff Kirsher default: 1541a6a5580cSJeff Kirsher break; 1542a6a5580cSJeff Kirsher } 1543a6a5580cSJeff Kirsher 1544a6a5580cSJeff Kirsher return err; 1545a6a5580cSJeff Kirsher } 1546a6a5580cSJeff Kirsher 1547a6a5580cSJeff Kirsher static void enic_synchronize_irqs(struct enic *enic) 1548a6a5580cSJeff Kirsher { 1549a6a5580cSJeff Kirsher unsigned int i; 1550a6a5580cSJeff Kirsher 1551a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1552a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1553a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1554a6a5580cSJeff Kirsher synchronize_irq(enic->pdev->irq); 1555a6a5580cSJeff Kirsher break; 1556a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1557a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) 1558a6a5580cSJeff Kirsher synchronize_irq(enic->msix_entry[i].vector); 1559a6a5580cSJeff Kirsher break; 1560a6a5580cSJeff Kirsher default: 1561a6a5580cSJeff Kirsher break; 1562a6a5580cSJeff Kirsher } 1563a6a5580cSJeff Kirsher } 1564a6a5580cSJeff Kirsher 1565a6a5580cSJeff Kirsher static int enic_dev_notify_set(struct enic *enic) 1566a6a5580cSJeff Kirsher { 1567a6a5580cSJeff Kirsher int err; 1568a6a5580cSJeff Kirsher 1569a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1570a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1571a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1572a6a5580cSJeff Kirsher err = vnic_dev_notify_set(enic->vdev, 1573a6a5580cSJeff Kirsher enic_legacy_notify_intr()); 1574a6a5580cSJeff Kirsher break; 1575a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1576a6a5580cSJeff Kirsher err = vnic_dev_notify_set(enic->vdev, 1577a6a5580cSJeff Kirsher enic_msix_notify_intr(enic)); 1578a6a5580cSJeff Kirsher break; 1579a6a5580cSJeff Kirsher default: 1580a6a5580cSJeff Kirsher err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */); 1581a6a5580cSJeff Kirsher break; 1582a6a5580cSJeff Kirsher } 1583a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1584a6a5580cSJeff Kirsher 1585a6a5580cSJeff Kirsher return err; 1586a6a5580cSJeff Kirsher } 1587a6a5580cSJeff Kirsher 1588a6a5580cSJeff Kirsher static void enic_notify_timer_start(struct enic *enic) 1589a6a5580cSJeff Kirsher { 1590a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 1591a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1592a6a5580cSJeff Kirsher mod_timer(&enic->notify_timer, jiffies); 1593a6a5580cSJeff Kirsher break; 1594a6a5580cSJeff Kirsher default: 1595a6a5580cSJeff Kirsher /* Using intr for notification for INTx/MSI-X */ 1596a6a5580cSJeff Kirsher break; 1597a6a5580cSJeff Kirsher } 1598a6a5580cSJeff Kirsher } 1599a6a5580cSJeff Kirsher 1600a6a5580cSJeff Kirsher /* rtnl lock is held, process context */ 1601a6a5580cSJeff Kirsher static int enic_open(struct net_device *netdev) 1602a6a5580cSJeff Kirsher { 1603a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1604a6a5580cSJeff Kirsher unsigned int i; 1605a6a5580cSJeff Kirsher int err; 1606a6a5580cSJeff Kirsher 1607a6a5580cSJeff Kirsher err = enic_request_intr(enic); 1608a6a5580cSJeff Kirsher if (err) { 1609a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to request irq.\n"); 1610a6a5580cSJeff Kirsher return err; 1611a6a5580cSJeff Kirsher } 1612a6a5580cSJeff Kirsher 1613a6a5580cSJeff Kirsher err = enic_dev_notify_set(enic); 1614a6a5580cSJeff Kirsher if (err) { 1615a6a5580cSJeff Kirsher netdev_err(netdev, 1616a6a5580cSJeff Kirsher "Failed to alloc notify buffer, aborting.\n"); 1617a6a5580cSJeff Kirsher goto err_out_free_intr; 1618a6a5580cSJeff Kirsher } 1619a6a5580cSJeff Kirsher 1620a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1621a6a5580cSJeff Kirsher vnic_rq_fill(&enic->rq[i], enic_rq_alloc_buf); 1622a6a5580cSJeff Kirsher /* Need at least one buffer on ring to get going */ 1623a6a5580cSJeff Kirsher if (vnic_rq_desc_used(&enic->rq[i]) == 0) { 1624a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to alloc receive buffers\n"); 1625a6a5580cSJeff Kirsher err = -ENOMEM; 1626a6a5580cSJeff Kirsher goto err_out_notify_unset; 1627a6a5580cSJeff Kirsher } 1628a6a5580cSJeff Kirsher } 1629a6a5580cSJeff Kirsher 1630a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) 1631a6a5580cSJeff Kirsher vnic_wq_enable(&enic->wq[i]); 1632a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1633a6a5580cSJeff Kirsher vnic_rq_enable(&enic->rq[i]); 1634a6a5580cSJeff Kirsher 16357335903cSRoopa Prabhu if (!enic_is_dynamic(enic) && !enic_is_sriov_vf(enic)) 1636a6a5580cSJeff Kirsher enic_dev_add_station_addr(enic); 16373f192795SRoopa Prabhu 1638a6a5580cSJeff Kirsher enic_set_rx_mode(netdev); 1639a6a5580cSJeff Kirsher 1640a6a5580cSJeff Kirsher netif_wake_queue(netdev); 1641a6a5580cSJeff Kirsher 1642a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1643a6a5580cSJeff Kirsher napi_enable(&enic->napi[i]); 1644a6a5580cSJeff Kirsher 1645a6a5580cSJeff Kirsher enic_dev_enable(enic); 1646a6a5580cSJeff Kirsher 1647a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) 1648a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[i]); 1649a6a5580cSJeff Kirsher 1650a6a5580cSJeff Kirsher enic_notify_timer_start(enic); 1651a6a5580cSJeff Kirsher 1652a6a5580cSJeff Kirsher return 0; 1653a6a5580cSJeff Kirsher 1654a6a5580cSJeff Kirsher err_out_notify_unset: 1655a6a5580cSJeff Kirsher enic_dev_notify_unset(enic); 1656a6a5580cSJeff Kirsher err_out_free_intr: 1657a6a5580cSJeff Kirsher enic_free_intr(enic); 1658a6a5580cSJeff Kirsher 1659a6a5580cSJeff Kirsher return err; 1660a6a5580cSJeff Kirsher } 1661a6a5580cSJeff Kirsher 1662a6a5580cSJeff Kirsher /* rtnl lock is held, process context */ 1663a6a5580cSJeff Kirsher static int enic_stop(struct net_device *netdev) 1664a6a5580cSJeff Kirsher { 1665a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1666a6a5580cSJeff Kirsher unsigned int i; 1667a6a5580cSJeff Kirsher int err; 1668a6a5580cSJeff Kirsher 1669a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) { 1670a6a5580cSJeff Kirsher vnic_intr_mask(&enic->intr[i]); 1671a6a5580cSJeff Kirsher (void)vnic_intr_masked(&enic->intr[i]); /* flush write */ 1672a6a5580cSJeff Kirsher } 1673a6a5580cSJeff Kirsher 1674a6a5580cSJeff Kirsher enic_synchronize_irqs(enic); 1675a6a5580cSJeff Kirsher 1676a6a5580cSJeff Kirsher del_timer_sync(&enic->notify_timer); 1677a6a5580cSJeff Kirsher 1678a6a5580cSJeff Kirsher enic_dev_disable(enic); 1679a6a5580cSJeff Kirsher 1680a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1681a6a5580cSJeff Kirsher napi_disable(&enic->napi[i]); 1682a6a5580cSJeff Kirsher 1683a6a5580cSJeff Kirsher netif_carrier_off(netdev); 1684a6a5580cSJeff Kirsher netif_tx_disable(netdev); 16853f192795SRoopa Prabhu 16867335903cSRoopa Prabhu if (!enic_is_dynamic(enic) && !enic_is_sriov_vf(enic)) 1687a6a5580cSJeff Kirsher enic_dev_del_station_addr(enic); 1688a6a5580cSJeff Kirsher 1689a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 1690a6a5580cSJeff Kirsher err = vnic_wq_disable(&enic->wq[i]); 1691a6a5580cSJeff Kirsher if (err) 1692a6a5580cSJeff Kirsher return err; 1693a6a5580cSJeff Kirsher } 1694a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1695a6a5580cSJeff Kirsher err = vnic_rq_disable(&enic->rq[i]); 1696a6a5580cSJeff Kirsher if (err) 1697a6a5580cSJeff Kirsher return err; 1698a6a5580cSJeff Kirsher } 1699a6a5580cSJeff Kirsher 1700a6a5580cSJeff Kirsher enic_dev_notify_unset(enic); 1701a6a5580cSJeff Kirsher enic_free_intr(enic); 1702a6a5580cSJeff Kirsher 1703a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) 1704a6a5580cSJeff Kirsher vnic_wq_clean(&enic->wq[i], enic_free_wq_buf); 1705a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1706a6a5580cSJeff Kirsher vnic_rq_clean(&enic->rq[i], enic_free_rq_buf); 1707a6a5580cSJeff Kirsher for (i = 0; i < enic->cq_count; i++) 1708a6a5580cSJeff Kirsher vnic_cq_clean(&enic->cq[i]); 1709a6a5580cSJeff Kirsher for (i = 0; i < enic->intr_count; i++) 1710a6a5580cSJeff Kirsher vnic_intr_clean(&enic->intr[i]); 1711a6a5580cSJeff Kirsher 1712a6a5580cSJeff Kirsher return 0; 1713a6a5580cSJeff Kirsher } 1714a6a5580cSJeff Kirsher 1715a6a5580cSJeff Kirsher static int enic_change_mtu(struct net_device *netdev, int new_mtu) 1716a6a5580cSJeff Kirsher { 1717a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1718a6a5580cSJeff Kirsher int running = netif_running(netdev); 1719a6a5580cSJeff Kirsher 1720a6a5580cSJeff Kirsher if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU) 1721a6a5580cSJeff Kirsher return -EINVAL; 1722a6a5580cSJeff Kirsher 17237335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) 1724a6a5580cSJeff Kirsher return -EOPNOTSUPP; 1725a6a5580cSJeff Kirsher 1726a6a5580cSJeff Kirsher if (running) 1727a6a5580cSJeff Kirsher enic_stop(netdev); 1728a6a5580cSJeff Kirsher 1729a6a5580cSJeff Kirsher netdev->mtu = new_mtu; 1730a6a5580cSJeff Kirsher 1731a6a5580cSJeff Kirsher if (netdev->mtu > enic->port_mtu) 1732a6a5580cSJeff Kirsher netdev_warn(netdev, 1733a6a5580cSJeff Kirsher "interface MTU (%d) set higher than port MTU (%d)\n", 1734a6a5580cSJeff Kirsher netdev->mtu, enic->port_mtu); 1735a6a5580cSJeff Kirsher 1736a6a5580cSJeff Kirsher if (running) 1737a6a5580cSJeff Kirsher enic_open(netdev); 1738a6a5580cSJeff Kirsher 1739a6a5580cSJeff Kirsher return 0; 1740a6a5580cSJeff Kirsher } 1741a6a5580cSJeff Kirsher 1742a6a5580cSJeff Kirsher static void enic_change_mtu_work(struct work_struct *work) 1743a6a5580cSJeff Kirsher { 1744a6a5580cSJeff Kirsher struct enic *enic = container_of(work, struct enic, change_mtu_work); 1745a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 1746a6a5580cSJeff Kirsher int new_mtu = vnic_dev_mtu(enic->vdev); 1747a6a5580cSJeff Kirsher int err; 1748a6a5580cSJeff Kirsher unsigned int i; 1749a6a5580cSJeff Kirsher 1750a6a5580cSJeff Kirsher new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu)); 1751a6a5580cSJeff Kirsher 1752a6a5580cSJeff Kirsher rtnl_lock(); 1753a6a5580cSJeff Kirsher 1754a6a5580cSJeff Kirsher /* Stop RQ */ 1755a6a5580cSJeff Kirsher del_timer_sync(&enic->notify_timer); 1756a6a5580cSJeff Kirsher 1757a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 1758a6a5580cSJeff Kirsher napi_disable(&enic->napi[i]); 1759a6a5580cSJeff Kirsher 1760a6a5580cSJeff Kirsher vnic_intr_mask(&enic->intr[0]); 1761a6a5580cSJeff Kirsher enic_synchronize_irqs(enic); 1762a6a5580cSJeff Kirsher err = vnic_rq_disable(&enic->rq[0]); 1763a6a5580cSJeff Kirsher if (err) { 1764a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to disable RQ.\n"); 1765a6a5580cSJeff Kirsher return; 1766a6a5580cSJeff Kirsher } 1767a6a5580cSJeff Kirsher vnic_rq_clean(&enic->rq[0], enic_free_rq_buf); 1768a6a5580cSJeff Kirsher vnic_cq_clean(&enic->cq[0]); 1769a6a5580cSJeff Kirsher vnic_intr_clean(&enic->intr[0]); 1770a6a5580cSJeff Kirsher 1771a6a5580cSJeff Kirsher /* Fill RQ with new_mtu-sized buffers */ 1772a6a5580cSJeff Kirsher netdev->mtu = new_mtu; 1773a6a5580cSJeff Kirsher vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); 1774a6a5580cSJeff Kirsher /* Need at least one buffer on ring to get going */ 1775a6a5580cSJeff Kirsher if (vnic_rq_desc_used(&enic->rq[0]) == 0) { 1776a6a5580cSJeff Kirsher netdev_err(netdev, "Unable to alloc receive buffers.\n"); 1777a6a5580cSJeff Kirsher return; 1778a6a5580cSJeff Kirsher } 1779a6a5580cSJeff Kirsher 1780a6a5580cSJeff Kirsher /* Start RQ */ 1781a6a5580cSJeff Kirsher vnic_rq_enable(&enic->rq[0]); 1782a6a5580cSJeff Kirsher napi_enable(&enic->napi[0]); 1783a6a5580cSJeff Kirsher vnic_intr_unmask(&enic->intr[0]); 1784a6a5580cSJeff Kirsher enic_notify_timer_start(enic); 1785a6a5580cSJeff Kirsher 1786a6a5580cSJeff Kirsher rtnl_unlock(); 1787a6a5580cSJeff Kirsher 1788a6a5580cSJeff Kirsher netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu); 1789a6a5580cSJeff Kirsher } 1790a6a5580cSJeff Kirsher 1791a6a5580cSJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 1792a6a5580cSJeff Kirsher static void enic_poll_controller(struct net_device *netdev) 1793a6a5580cSJeff Kirsher { 1794a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 1795a6a5580cSJeff Kirsher struct vnic_dev *vdev = enic->vdev; 1796a6a5580cSJeff Kirsher unsigned int i, intr; 1797a6a5580cSJeff Kirsher 1798a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(vdev)) { 1799a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 1800a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) { 1801a6a5580cSJeff Kirsher intr = enic_msix_rq_intr(enic, i); 1802a6a5580cSJeff Kirsher enic_isr_msix_rq(enic->msix_entry[intr].vector, 1803a6a5580cSJeff Kirsher &enic->napi[i]); 1804a6a5580cSJeff Kirsher } 1805a6a5580cSJeff Kirsher 1806a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) { 1807a6a5580cSJeff Kirsher intr = enic_msix_wq_intr(enic, i); 1808a6a5580cSJeff Kirsher enic_isr_msix_wq(enic->msix_entry[intr].vector, enic); 1809a6a5580cSJeff Kirsher } 1810a6a5580cSJeff Kirsher 1811a6a5580cSJeff Kirsher break; 1812a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 1813a6a5580cSJeff Kirsher enic_isr_msi(enic->pdev->irq, enic); 1814a6a5580cSJeff Kirsher break; 1815a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_INTX: 1816a6a5580cSJeff Kirsher enic_isr_legacy(enic->pdev->irq, netdev); 1817a6a5580cSJeff Kirsher break; 1818a6a5580cSJeff Kirsher default: 1819a6a5580cSJeff Kirsher break; 1820a6a5580cSJeff Kirsher } 1821a6a5580cSJeff Kirsher } 1822a6a5580cSJeff Kirsher #endif 1823a6a5580cSJeff Kirsher 1824a6a5580cSJeff Kirsher static int enic_dev_wait(struct vnic_dev *vdev, 1825a6a5580cSJeff Kirsher int (*start)(struct vnic_dev *, int), 1826a6a5580cSJeff Kirsher int (*finished)(struct vnic_dev *, int *), 1827a6a5580cSJeff Kirsher int arg) 1828a6a5580cSJeff Kirsher { 1829a6a5580cSJeff Kirsher unsigned long time; 1830a6a5580cSJeff Kirsher int done; 1831a6a5580cSJeff Kirsher int err; 1832a6a5580cSJeff Kirsher 1833a6a5580cSJeff Kirsher BUG_ON(in_interrupt()); 1834a6a5580cSJeff Kirsher 1835a6a5580cSJeff Kirsher err = start(vdev, arg); 1836a6a5580cSJeff Kirsher if (err) 1837a6a5580cSJeff Kirsher return err; 1838a6a5580cSJeff Kirsher 1839a6a5580cSJeff Kirsher /* Wait for func to complete...2 seconds max 1840a6a5580cSJeff Kirsher */ 1841a6a5580cSJeff Kirsher 1842a6a5580cSJeff Kirsher time = jiffies + (HZ * 2); 1843a6a5580cSJeff Kirsher do { 1844a6a5580cSJeff Kirsher 1845a6a5580cSJeff Kirsher err = finished(vdev, &done); 1846a6a5580cSJeff Kirsher if (err) 1847a6a5580cSJeff Kirsher return err; 1848a6a5580cSJeff Kirsher 1849a6a5580cSJeff Kirsher if (done) 1850a6a5580cSJeff Kirsher return 0; 1851a6a5580cSJeff Kirsher 1852a6a5580cSJeff Kirsher schedule_timeout_uninterruptible(HZ / 10); 1853a6a5580cSJeff Kirsher 1854a6a5580cSJeff Kirsher } while (time_after(time, jiffies)); 1855a6a5580cSJeff Kirsher 1856a6a5580cSJeff Kirsher return -ETIMEDOUT; 1857a6a5580cSJeff Kirsher } 1858a6a5580cSJeff Kirsher 1859a6a5580cSJeff Kirsher static int enic_dev_open(struct enic *enic) 1860a6a5580cSJeff Kirsher { 1861a6a5580cSJeff Kirsher int err; 1862a6a5580cSJeff Kirsher 1863a6a5580cSJeff Kirsher err = enic_dev_wait(enic->vdev, vnic_dev_open, 1864a6a5580cSJeff Kirsher vnic_dev_open_done, 0); 1865a6a5580cSJeff Kirsher if (err) 1866a6a5580cSJeff Kirsher dev_err(enic_get_dev(enic), "vNIC device open failed, err %d\n", 1867a6a5580cSJeff Kirsher err); 1868a6a5580cSJeff Kirsher 1869a6a5580cSJeff Kirsher return err; 1870a6a5580cSJeff Kirsher } 1871a6a5580cSJeff Kirsher 1872a6a5580cSJeff Kirsher static int enic_dev_hang_reset(struct enic *enic) 1873a6a5580cSJeff Kirsher { 1874a6a5580cSJeff Kirsher int err; 1875a6a5580cSJeff Kirsher 1876a6a5580cSJeff Kirsher err = enic_dev_wait(enic->vdev, vnic_dev_hang_reset, 1877a6a5580cSJeff Kirsher vnic_dev_hang_reset_done, 0); 1878a6a5580cSJeff Kirsher if (err) 1879a6a5580cSJeff Kirsher netdev_err(enic->netdev, "vNIC hang reset failed, err %d\n", 1880a6a5580cSJeff Kirsher err); 1881a6a5580cSJeff Kirsher 1882a6a5580cSJeff Kirsher return err; 1883a6a5580cSJeff Kirsher } 1884a6a5580cSJeff Kirsher 1885a6a5580cSJeff Kirsher static int enic_set_rsskey(struct enic *enic) 1886a6a5580cSJeff Kirsher { 1887a6a5580cSJeff Kirsher dma_addr_t rss_key_buf_pa; 1888a6a5580cSJeff Kirsher union vnic_rss_key *rss_key_buf_va = NULL; 1889a6a5580cSJeff Kirsher union vnic_rss_key rss_key = { 1890a6a5580cSJeff Kirsher .key[0].b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}, 1891a6a5580cSJeff Kirsher .key[1].b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}, 1892a6a5580cSJeff Kirsher .key[2].b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}, 1893a6a5580cSJeff Kirsher .key[3].b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}, 1894a6a5580cSJeff Kirsher }; 1895a6a5580cSJeff Kirsher int err; 1896a6a5580cSJeff Kirsher 1897a6a5580cSJeff Kirsher rss_key_buf_va = pci_alloc_consistent(enic->pdev, 1898a6a5580cSJeff Kirsher sizeof(union vnic_rss_key), &rss_key_buf_pa); 1899a6a5580cSJeff Kirsher if (!rss_key_buf_va) 1900a6a5580cSJeff Kirsher return -ENOMEM; 1901a6a5580cSJeff Kirsher 1902a6a5580cSJeff Kirsher memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key)); 1903a6a5580cSJeff Kirsher 1904a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1905a6a5580cSJeff Kirsher err = enic_set_rss_key(enic, 1906a6a5580cSJeff Kirsher rss_key_buf_pa, 1907a6a5580cSJeff Kirsher sizeof(union vnic_rss_key)); 1908a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1909a6a5580cSJeff Kirsher 1910a6a5580cSJeff Kirsher pci_free_consistent(enic->pdev, sizeof(union vnic_rss_key), 1911a6a5580cSJeff Kirsher rss_key_buf_va, rss_key_buf_pa); 1912a6a5580cSJeff Kirsher 1913a6a5580cSJeff Kirsher return err; 1914a6a5580cSJeff Kirsher } 1915a6a5580cSJeff Kirsher 1916a6a5580cSJeff Kirsher static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits) 1917a6a5580cSJeff Kirsher { 1918a6a5580cSJeff Kirsher dma_addr_t rss_cpu_buf_pa; 1919a6a5580cSJeff Kirsher union vnic_rss_cpu *rss_cpu_buf_va = NULL; 1920a6a5580cSJeff Kirsher unsigned int i; 1921a6a5580cSJeff Kirsher int err; 1922a6a5580cSJeff Kirsher 1923a6a5580cSJeff Kirsher rss_cpu_buf_va = pci_alloc_consistent(enic->pdev, 1924a6a5580cSJeff Kirsher sizeof(union vnic_rss_cpu), &rss_cpu_buf_pa); 1925a6a5580cSJeff Kirsher if (!rss_cpu_buf_va) 1926a6a5580cSJeff Kirsher return -ENOMEM; 1927a6a5580cSJeff Kirsher 1928a6a5580cSJeff Kirsher for (i = 0; i < (1 << rss_hash_bits); i++) 1929a6a5580cSJeff Kirsher (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count; 1930a6a5580cSJeff Kirsher 1931a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1932a6a5580cSJeff Kirsher err = enic_set_rss_cpu(enic, 1933a6a5580cSJeff Kirsher rss_cpu_buf_pa, 1934a6a5580cSJeff Kirsher sizeof(union vnic_rss_cpu)); 1935a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1936a6a5580cSJeff Kirsher 1937a6a5580cSJeff Kirsher pci_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu), 1938a6a5580cSJeff Kirsher rss_cpu_buf_va, rss_cpu_buf_pa); 1939a6a5580cSJeff Kirsher 1940a6a5580cSJeff Kirsher return err; 1941a6a5580cSJeff Kirsher } 1942a6a5580cSJeff Kirsher 1943a6a5580cSJeff Kirsher static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu, 1944a6a5580cSJeff Kirsher u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable) 1945a6a5580cSJeff Kirsher { 1946a6a5580cSJeff Kirsher const u8 tso_ipid_split_en = 0; 1947a6a5580cSJeff Kirsher const u8 ig_vlan_strip_en = 1; 1948a6a5580cSJeff Kirsher int err; 1949a6a5580cSJeff Kirsher 1950a6a5580cSJeff Kirsher /* Enable VLAN tag stripping. 1951a6a5580cSJeff Kirsher */ 1952a6a5580cSJeff Kirsher 1953a6a5580cSJeff Kirsher spin_lock(&enic->devcmd_lock); 1954a6a5580cSJeff Kirsher err = enic_set_nic_cfg(enic, 1955a6a5580cSJeff Kirsher rss_default_cpu, rss_hash_type, 1956a6a5580cSJeff Kirsher rss_hash_bits, rss_base_cpu, 1957a6a5580cSJeff Kirsher rss_enable, tso_ipid_split_en, 1958a6a5580cSJeff Kirsher ig_vlan_strip_en); 1959a6a5580cSJeff Kirsher spin_unlock(&enic->devcmd_lock); 1960a6a5580cSJeff Kirsher 1961a6a5580cSJeff Kirsher return err; 1962a6a5580cSJeff Kirsher } 1963a6a5580cSJeff Kirsher 1964a6a5580cSJeff Kirsher static int enic_set_rss_nic_cfg(struct enic *enic) 1965a6a5580cSJeff Kirsher { 1966a6a5580cSJeff Kirsher struct device *dev = enic_get_dev(enic); 1967a6a5580cSJeff Kirsher const u8 rss_default_cpu = 0; 1968a6a5580cSJeff Kirsher const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 | 1969a6a5580cSJeff Kirsher NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 | 1970a6a5580cSJeff Kirsher NIC_CFG_RSS_HASH_TYPE_IPV6 | 1971a6a5580cSJeff Kirsher NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; 1972a6a5580cSJeff Kirsher const u8 rss_hash_bits = 7; 1973a6a5580cSJeff Kirsher const u8 rss_base_cpu = 0; 1974a6a5580cSJeff Kirsher u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1); 1975a6a5580cSJeff Kirsher 1976a6a5580cSJeff Kirsher if (rss_enable) { 1977a6a5580cSJeff Kirsher if (!enic_set_rsskey(enic)) { 1978a6a5580cSJeff Kirsher if (enic_set_rsscpu(enic, rss_hash_bits)) { 1979a6a5580cSJeff Kirsher rss_enable = 0; 1980a6a5580cSJeff Kirsher dev_warn(dev, "RSS disabled, " 1981a6a5580cSJeff Kirsher "Failed to set RSS cpu indirection table."); 1982a6a5580cSJeff Kirsher } 1983a6a5580cSJeff Kirsher } else { 1984a6a5580cSJeff Kirsher rss_enable = 0; 1985a6a5580cSJeff Kirsher dev_warn(dev, "RSS disabled, Failed to set RSS key.\n"); 1986a6a5580cSJeff Kirsher } 1987a6a5580cSJeff Kirsher } 1988a6a5580cSJeff Kirsher 1989a6a5580cSJeff Kirsher return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type, 1990a6a5580cSJeff Kirsher rss_hash_bits, rss_base_cpu, rss_enable); 1991a6a5580cSJeff Kirsher } 1992a6a5580cSJeff Kirsher 1993a6a5580cSJeff Kirsher static void enic_reset(struct work_struct *work) 1994a6a5580cSJeff Kirsher { 1995a6a5580cSJeff Kirsher struct enic *enic = container_of(work, struct enic, reset); 1996a6a5580cSJeff Kirsher 1997a6a5580cSJeff Kirsher if (!netif_running(enic->netdev)) 1998a6a5580cSJeff Kirsher return; 1999a6a5580cSJeff Kirsher 2000a6a5580cSJeff Kirsher rtnl_lock(); 2001a6a5580cSJeff Kirsher 2002a6a5580cSJeff Kirsher enic_dev_hang_notify(enic); 2003a6a5580cSJeff Kirsher enic_stop(enic->netdev); 2004a6a5580cSJeff Kirsher enic_dev_hang_reset(enic); 2005a6a5580cSJeff Kirsher enic_reset_addr_lists(enic); 2006a6a5580cSJeff Kirsher enic_init_vnic_resources(enic); 2007a6a5580cSJeff Kirsher enic_set_rss_nic_cfg(enic); 2008a6a5580cSJeff Kirsher enic_dev_set_ig_vlan_rewrite_mode(enic); 2009a6a5580cSJeff Kirsher enic_open(enic->netdev); 2010a6a5580cSJeff Kirsher 2011a6a5580cSJeff Kirsher rtnl_unlock(); 2012a6a5580cSJeff Kirsher } 2013a6a5580cSJeff Kirsher 2014a6a5580cSJeff Kirsher static int enic_set_intr_mode(struct enic *enic) 2015a6a5580cSJeff Kirsher { 2016a6a5580cSJeff Kirsher unsigned int n = min_t(unsigned int, enic->rq_count, ENIC_RQ_MAX); 2017a6a5580cSJeff Kirsher unsigned int m = min_t(unsigned int, enic->wq_count, ENIC_WQ_MAX); 2018a6a5580cSJeff Kirsher unsigned int i; 2019a6a5580cSJeff Kirsher 2020a6a5580cSJeff Kirsher /* Set interrupt mode (INTx, MSI, MSI-X) depending 2021a6a5580cSJeff Kirsher * on system capabilities. 2022a6a5580cSJeff Kirsher * 2023a6a5580cSJeff Kirsher * Try MSI-X first 2024a6a5580cSJeff Kirsher * 2025a6a5580cSJeff Kirsher * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs 2026a6a5580cSJeff Kirsher * (the second to last INTR is used for WQ/RQ errors) 2027a6a5580cSJeff Kirsher * (the last INTR is used for notifications) 2028a6a5580cSJeff Kirsher */ 2029a6a5580cSJeff Kirsher 2030a6a5580cSJeff Kirsher BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2); 2031a6a5580cSJeff Kirsher for (i = 0; i < n + m + 2; i++) 2032a6a5580cSJeff Kirsher enic->msix_entry[i].entry = i; 2033a6a5580cSJeff Kirsher 2034a6a5580cSJeff Kirsher /* Use multiple RQs if RSS is enabled 2035a6a5580cSJeff Kirsher */ 2036a6a5580cSJeff Kirsher 2037a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, RSS) && 2038a6a5580cSJeff Kirsher enic->config.intr_mode < 1 && 2039a6a5580cSJeff Kirsher enic->rq_count >= n && 2040a6a5580cSJeff Kirsher enic->wq_count >= m && 2041a6a5580cSJeff Kirsher enic->cq_count >= n + m && 2042a6a5580cSJeff Kirsher enic->intr_count >= n + m + 2) { 2043a6a5580cSJeff Kirsher 2044a6a5580cSJeff Kirsher if (!pci_enable_msix(enic->pdev, enic->msix_entry, n + m + 2)) { 2045a6a5580cSJeff Kirsher 2046a6a5580cSJeff Kirsher enic->rq_count = n; 2047a6a5580cSJeff Kirsher enic->wq_count = m; 2048a6a5580cSJeff Kirsher enic->cq_count = n + m; 2049a6a5580cSJeff Kirsher enic->intr_count = n + m + 2; 2050a6a5580cSJeff Kirsher 2051a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, 2052a6a5580cSJeff Kirsher VNIC_DEV_INTR_MODE_MSIX); 2053a6a5580cSJeff Kirsher 2054a6a5580cSJeff Kirsher return 0; 2055a6a5580cSJeff Kirsher } 2056a6a5580cSJeff Kirsher } 2057a6a5580cSJeff Kirsher 2058a6a5580cSJeff Kirsher if (enic->config.intr_mode < 1 && 2059a6a5580cSJeff Kirsher enic->rq_count >= 1 && 2060a6a5580cSJeff Kirsher enic->wq_count >= m && 2061a6a5580cSJeff Kirsher enic->cq_count >= 1 + m && 2062a6a5580cSJeff Kirsher enic->intr_count >= 1 + m + 2) { 2063a6a5580cSJeff Kirsher if (!pci_enable_msix(enic->pdev, enic->msix_entry, 1 + m + 2)) { 2064a6a5580cSJeff Kirsher 2065a6a5580cSJeff Kirsher enic->rq_count = 1; 2066a6a5580cSJeff Kirsher enic->wq_count = m; 2067a6a5580cSJeff Kirsher enic->cq_count = 1 + m; 2068a6a5580cSJeff Kirsher enic->intr_count = 1 + m + 2; 2069a6a5580cSJeff Kirsher 2070a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, 2071a6a5580cSJeff Kirsher VNIC_DEV_INTR_MODE_MSIX); 2072a6a5580cSJeff Kirsher 2073a6a5580cSJeff Kirsher return 0; 2074a6a5580cSJeff Kirsher } 2075a6a5580cSJeff Kirsher } 2076a6a5580cSJeff Kirsher 2077a6a5580cSJeff Kirsher /* Next try MSI 2078a6a5580cSJeff Kirsher * 2079a6a5580cSJeff Kirsher * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR 2080a6a5580cSJeff Kirsher */ 2081a6a5580cSJeff Kirsher 2082a6a5580cSJeff Kirsher if (enic->config.intr_mode < 2 && 2083a6a5580cSJeff Kirsher enic->rq_count >= 1 && 2084a6a5580cSJeff Kirsher enic->wq_count >= 1 && 2085a6a5580cSJeff Kirsher enic->cq_count >= 2 && 2086a6a5580cSJeff Kirsher enic->intr_count >= 1 && 2087a6a5580cSJeff Kirsher !pci_enable_msi(enic->pdev)) { 2088a6a5580cSJeff Kirsher 2089a6a5580cSJeff Kirsher enic->rq_count = 1; 2090a6a5580cSJeff Kirsher enic->wq_count = 1; 2091a6a5580cSJeff Kirsher enic->cq_count = 2; 2092a6a5580cSJeff Kirsher enic->intr_count = 1; 2093a6a5580cSJeff Kirsher 2094a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI); 2095a6a5580cSJeff Kirsher 2096a6a5580cSJeff Kirsher return 0; 2097a6a5580cSJeff Kirsher } 2098a6a5580cSJeff Kirsher 2099a6a5580cSJeff Kirsher /* Next try INTx 2100a6a5580cSJeff Kirsher * 2101a6a5580cSJeff Kirsher * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs 2102a6a5580cSJeff Kirsher * (the first INTR is used for WQ/RQ) 2103a6a5580cSJeff Kirsher * (the second INTR is used for WQ/RQ errors) 2104a6a5580cSJeff Kirsher * (the last INTR is used for notifications) 2105a6a5580cSJeff Kirsher */ 2106a6a5580cSJeff Kirsher 2107a6a5580cSJeff Kirsher if (enic->config.intr_mode < 3 && 2108a6a5580cSJeff Kirsher enic->rq_count >= 1 && 2109a6a5580cSJeff Kirsher enic->wq_count >= 1 && 2110a6a5580cSJeff Kirsher enic->cq_count >= 2 && 2111a6a5580cSJeff Kirsher enic->intr_count >= 3) { 2112a6a5580cSJeff Kirsher 2113a6a5580cSJeff Kirsher enic->rq_count = 1; 2114a6a5580cSJeff Kirsher enic->wq_count = 1; 2115a6a5580cSJeff Kirsher enic->cq_count = 2; 2116a6a5580cSJeff Kirsher enic->intr_count = 3; 2117a6a5580cSJeff Kirsher 2118a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX); 2119a6a5580cSJeff Kirsher 2120a6a5580cSJeff Kirsher return 0; 2121a6a5580cSJeff Kirsher } 2122a6a5580cSJeff Kirsher 2123a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); 2124a6a5580cSJeff Kirsher 2125a6a5580cSJeff Kirsher return -EINVAL; 2126a6a5580cSJeff Kirsher } 2127a6a5580cSJeff Kirsher 2128a6a5580cSJeff Kirsher static void enic_clear_intr_mode(struct enic *enic) 2129a6a5580cSJeff Kirsher { 2130a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 2131a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 2132a6a5580cSJeff Kirsher pci_disable_msix(enic->pdev); 2133a6a5580cSJeff Kirsher break; 2134a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSI: 2135a6a5580cSJeff Kirsher pci_disable_msi(enic->pdev); 2136a6a5580cSJeff Kirsher break; 2137a6a5580cSJeff Kirsher default: 2138a6a5580cSJeff Kirsher break; 2139a6a5580cSJeff Kirsher } 2140a6a5580cSJeff Kirsher 2141a6a5580cSJeff Kirsher vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); 2142a6a5580cSJeff Kirsher } 2143a6a5580cSJeff Kirsher 2144a6a5580cSJeff Kirsher static const struct net_device_ops enic_netdev_dynamic_ops = { 2145a6a5580cSJeff Kirsher .ndo_open = enic_open, 2146a6a5580cSJeff Kirsher .ndo_stop = enic_stop, 2147a6a5580cSJeff Kirsher .ndo_start_xmit = enic_hard_start_xmit, 2148a6a5580cSJeff Kirsher .ndo_get_stats64 = enic_get_stats, 2149a6a5580cSJeff Kirsher .ndo_validate_addr = eth_validate_addr, 2150a6a5580cSJeff Kirsher .ndo_set_rx_mode = enic_set_rx_mode, 2151a6a5580cSJeff Kirsher .ndo_set_mac_address = enic_set_mac_address_dynamic, 2152a6a5580cSJeff Kirsher .ndo_change_mtu = enic_change_mtu, 2153a6a5580cSJeff Kirsher .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, 2154a6a5580cSJeff Kirsher .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, 2155a6a5580cSJeff Kirsher .ndo_tx_timeout = enic_tx_timeout, 2156a6a5580cSJeff Kirsher .ndo_set_vf_port = enic_set_vf_port, 2157a6a5580cSJeff Kirsher .ndo_get_vf_port = enic_get_vf_port, 2158a6a5580cSJeff Kirsher .ndo_set_vf_mac = enic_set_vf_mac, 2159a6a5580cSJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 2160a6a5580cSJeff Kirsher .ndo_poll_controller = enic_poll_controller, 2161a6a5580cSJeff Kirsher #endif 2162a6a5580cSJeff Kirsher }; 2163a6a5580cSJeff Kirsher 2164a6a5580cSJeff Kirsher static const struct net_device_ops enic_netdev_ops = { 2165a6a5580cSJeff Kirsher .ndo_open = enic_open, 2166a6a5580cSJeff Kirsher .ndo_stop = enic_stop, 2167a6a5580cSJeff Kirsher .ndo_start_xmit = enic_hard_start_xmit, 2168a6a5580cSJeff Kirsher .ndo_get_stats64 = enic_get_stats, 2169a6a5580cSJeff Kirsher .ndo_validate_addr = eth_validate_addr, 2170a6a5580cSJeff Kirsher .ndo_set_mac_address = enic_set_mac_address, 2171a6a5580cSJeff Kirsher .ndo_set_rx_mode = enic_set_rx_mode, 2172a6a5580cSJeff Kirsher .ndo_change_mtu = enic_change_mtu, 2173a6a5580cSJeff Kirsher .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, 2174a6a5580cSJeff Kirsher .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, 2175a6a5580cSJeff Kirsher .ndo_tx_timeout = enic_tx_timeout, 21763f192795SRoopa Prabhu .ndo_set_vf_port = enic_set_vf_port, 21773f192795SRoopa Prabhu .ndo_get_vf_port = enic_get_vf_port, 21783f192795SRoopa Prabhu .ndo_set_vf_mac = enic_set_vf_mac, 2179a6a5580cSJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 2180a6a5580cSJeff Kirsher .ndo_poll_controller = enic_poll_controller, 2181a6a5580cSJeff Kirsher #endif 2182a6a5580cSJeff Kirsher }; 2183a6a5580cSJeff Kirsher 2184a6a5580cSJeff Kirsher static void enic_dev_deinit(struct enic *enic) 2185a6a5580cSJeff Kirsher { 2186a6a5580cSJeff Kirsher unsigned int i; 2187a6a5580cSJeff Kirsher 2188a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 2189a6a5580cSJeff Kirsher netif_napi_del(&enic->napi[i]); 2190a6a5580cSJeff Kirsher 2191a6a5580cSJeff Kirsher enic_free_vnic_resources(enic); 2192a6a5580cSJeff Kirsher enic_clear_intr_mode(enic); 2193a6a5580cSJeff Kirsher } 2194a6a5580cSJeff Kirsher 2195a6a5580cSJeff Kirsher static int enic_dev_init(struct enic *enic) 2196a6a5580cSJeff Kirsher { 2197a6a5580cSJeff Kirsher struct device *dev = enic_get_dev(enic); 2198a6a5580cSJeff Kirsher struct net_device *netdev = enic->netdev; 2199a6a5580cSJeff Kirsher unsigned int i; 2200a6a5580cSJeff Kirsher int err; 2201a6a5580cSJeff Kirsher 2202a6a5580cSJeff Kirsher /* Get interrupt coalesce timer info */ 2203a6a5580cSJeff Kirsher err = enic_dev_intr_coal_timer_info(enic); 2204a6a5580cSJeff Kirsher if (err) { 2205a6a5580cSJeff Kirsher dev_warn(dev, "Using default conversion factor for " 2206a6a5580cSJeff Kirsher "interrupt coalesce timer\n"); 2207a6a5580cSJeff Kirsher vnic_dev_intr_coal_timer_info_default(enic->vdev); 2208a6a5580cSJeff Kirsher } 2209a6a5580cSJeff Kirsher 2210a6a5580cSJeff Kirsher /* Get vNIC configuration 2211a6a5580cSJeff Kirsher */ 2212a6a5580cSJeff Kirsher 2213a6a5580cSJeff Kirsher err = enic_get_vnic_config(enic); 2214a6a5580cSJeff Kirsher if (err) { 2215a6a5580cSJeff Kirsher dev_err(dev, "Get vNIC configuration failed, aborting\n"); 2216a6a5580cSJeff Kirsher return err; 2217a6a5580cSJeff Kirsher } 2218a6a5580cSJeff Kirsher 2219a6a5580cSJeff Kirsher /* Get available resource counts 2220a6a5580cSJeff Kirsher */ 2221a6a5580cSJeff Kirsher 2222a6a5580cSJeff Kirsher enic_get_res_counts(enic); 2223a6a5580cSJeff Kirsher 2224a6a5580cSJeff Kirsher /* Set interrupt mode based on resource counts and system 2225a6a5580cSJeff Kirsher * capabilities 2226a6a5580cSJeff Kirsher */ 2227a6a5580cSJeff Kirsher 2228a6a5580cSJeff Kirsher err = enic_set_intr_mode(enic); 2229a6a5580cSJeff Kirsher if (err) { 2230a6a5580cSJeff Kirsher dev_err(dev, "Failed to set intr mode based on resource " 2231a6a5580cSJeff Kirsher "counts and system capabilities, aborting\n"); 2232a6a5580cSJeff Kirsher return err; 2233a6a5580cSJeff Kirsher } 2234a6a5580cSJeff Kirsher 2235a6a5580cSJeff Kirsher /* Allocate and configure vNIC resources 2236a6a5580cSJeff Kirsher */ 2237a6a5580cSJeff Kirsher 2238a6a5580cSJeff Kirsher err = enic_alloc_vnic_resources(enic); 2239a6a5580cSJeff Kirsher if (err) { 2240a6a5580cSJeff Kirsher dev_err(dev, "Failed to alloc vNIC resources, aborting\n"); 2241a6a5580cSJeff Kirsher goto err_out_free_vnic_resources; 2242a6a5580cSJeff Kirsher } 2243a6a5580cSJeff Kirsher 2244a6a5580cSJeff Kirsher enic_init_vnic_resources(enic); 2245a6a5580cSJeff Kirsher 2246a6a5580cSJeff Kirsher err = enic_set_rss_nic_cfg(enic); 2247a6a5580cSJeff Kirsher if (err) { 2248a6a5580cSJeff Kirsher dev_err(dev, "Failed to config nic, aborting\n"); 2249a6a5580cSJeff Kirsher goto err_out_free_vnic_resources; 2250a6a5580cSJeff Kirsher } 2251a6a5580cSJeff Kirsher 2252a6a5580cSJeff Kirsher switch (vnic_dev_get_intr_mode(enic->vdev)) { 2253a6a5580cSJeff Kirsher default: 2254a6a5580cSJeff Kirsher netif_napi_add(netdev, &enic->napi[0], enic_poll, 64); 2255a6a5580cSJeff Kirsher break; 2256a6a5580cSJeff Kirsher case VNIC_DEV_INTR_MODE_MSIX: 2257a6a5580cSJeff Kirsher for (i = 0; i < enic->rq_count; i++) 2258a6a5580cSJeff Kirsher netif_napi_add(netdev, &enic->napi[i], 2259a6a5580cSJeff Kirsher enic_poll_msix, 64); 2260a6a5580cSJeff Kirsher break; 2261a6a5580cSJeff Kirsher } 2262a6a5580cSJeff Kirsher 2263a6a5580cSJeff Kirsher return 0; 2264a6a5580cSJeff Kirsher 2265a6a5580cSJeff Kirsher err_out_free_vnic_resources: 2266a6a5580cSJeff Kirsher enic_clear_intr_mode(enic); 2267a6a5580cSJeff Kirsher enic_free_vnic_resources(enic); 2268a6a5580cSJeff Kirsher 2269a6a5580cSJeff Kirsher return err; 2270a6a5580cSJeff Kirsher } 2271a6a5580cSJeff Kirsher 2272a6a5580cSJeff Kirsher static void enic_iounmap(struct enic *enic) 2273a6a5580cSJeff Kirsher { 2274a6a5580cSJeff Kirsher unsigned int i; 2275a6a5580cSJeff Kirsher 2276a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->bar); i++) 2277a6a5580cSJeff Kirsher if (enic->bar[i].vaddr) 2278a6a5580cSJeff Kirsher iounmap(enic->bar[i].vaddr); 2279a6a5580cSJeff Kirsher } 2280a6a5580cSJeff Kirsher 22811dd06ae8SGreg Kroah-Hartman static int enic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 2282a6a5580cSJeff Kirsher { 2283a6a5580cSJeff Kirsher struct device *dev = &pdev->dev; 2284a6a5580cSJeff Kirsher struct net_device *netdev; 2285a6a5580cSJeff Kirsher struct enic *enic; 2286a6a5580cSJeff Kirsher int using_dac = 0; 2287a6a5580cSJeff Kirsher unsigned int i; 2288a6a5580cSJeff Kirsher int err; 22898749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 22908749b427SRoopa Prabhu int pos = 0; 22918749b427SRoopa Prabhu #endif 2292b67f231dSRoopa Prabhu int num_pps = 1; 2293a6a5580cSJeff Kirsher 2294a6a5580cSJeff Kirsher /* Allocate net device structure and initialize. Private 2295a6a5580cSJeff Kirsher * instance data is initialized to zero. 2296a6a5580cSJeff Kirsher */ 2297a6a5580cSJeff Kirsher 2298a6a5580cSJeff Kirsher netdev = alloc_etherdev(sizeof(struct enic)); 229941de8d4cSJoe Perches if (!netdev) 2300a6a5580cSJeff Kirsher return -ENOMEM; 2301a6a5580cSJeff Kirsher 2302a6a5580cSJeff Kirsher pci_set_drvdata(pdev, netdev); 2303a6a5580cSJeff Kirsher 2304a6a5580cSJeff Kirsher SET_NETDEV_DEV(netdev, &pdev->dev); 2305a6a5580cSJeff Kirsher 2306a6a5580cSJeff Kirsher enic = netdev_priv(netdev); 2307a6a5580cSJeff Kirsher enic->netdev = netdev; 2308a6a5580cSJeff Kirsher enic->pdev = pdev; 2309a6a5580cSJeff Kirsher 2310a6a5580cSJeff Kirsher /* Setup PCI resources 2311a6a5580cSJeff Kirsher */ 2312a6a5580cSJeff Kirsher 2313a6a5580cSJeff Kirsher err = pci_enable_device_mem(pdev); 2314a6a5580cSJeff Kirsher if (err) { 2315a6a5580cSJeff Kirsher dev_err(dev, "Cannot enable PCI device, aborting\n"); 2316a6a5580cSJeff Kirsher goto err_out_free_netdev; 2317a6a5580cSJeff Kirsher } 2318a6a5580cSJeff Kirsher 2319a6a5580cSJeff Kirsher err = pci_request_regions(pdev, DRV_NAME); 2320a6a5580cSJeff Kirsher if (err) { 2321a6a5580cSJeff Kirsher dev_err(dev, "Cannot request PCI regions, aborting\n"); 2322a6a5580cSJeff Kirsher goto err_out_disable_device; 2323a6a5580cSJeff Kirsher } 2324a6a5580cSJeff Kirsher 2325a6a5580cSJeff Kirsher pci_set_master(pdev); 2326a6a5580cSJeff Kirsher 2327a6a5580cSJeff Kirsher /* Query PCI controller on system for DMA addressing 2328a6a5580cSJeff Kirsher * limitation for the device. Try 40-bit first, and 2329a6a5580cSJeff Kirsher * fail to 32-bit. 2330a6a5580cSJeff Kirsher */ 2331a6a5580cSJeff Kirsher 2332a6a5580cSJeff Kirsher err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); 2333a6a5580cSJeff Kirsher if (err) { 2334a6a5580cSJeff Kirsher err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 2335a6a5580cSJeff Kirsher if (err) { 2336a6a5580cSJeff Kirsher dev_err(dev, "No usable DMA configuration, aborting\n"); 2337a6a5580cSJeff Kirsher goto err_out_release_regions; 2338a6a5580cSJeff Kirsher } 2339a6a5580cSJeff Kirsher err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 2340a6a5580cSJeff Kirsher if (err) { 2341a6a5580cSJeff Kirsher dev_err(dev, "Unable to obtain %u-bit DMA " 2342a6a5580cSJeff Kirsher "for consistent allocations, aborting\n", 32); 2343a6a5580cSJeff Kirsher goto err_out_release_regions; 2344a6a5580cSJeff Kirsher } 2345a6a5580cSJeff Kirsher } else { 2346a6a5580cSJeff Kirsher err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); 2347a6a5580cSJeff Kirsher if (err) { 2348a6a5580cSJeff Kirsher dev_err(dev, "Unable to obtain %u-bit DMA " 2349a6a5580cSJeff Kirsher "for consistent allocations, aborting\n", 40); 2350a6a5580cSJeff Kirsher goto err_out_release_regions; 2351a6a5580cSJeff Kirsher } 2352a6a5580cSJeff Kirsher using_dac = 1; 2353a6a5580cSJeff Kirsher } 2354a6a5580cSJeff Kirsher 2355a6a5580cSJeff Kirsher /* Map vNIC resources from BAR0-5 2356a6a5580cSJeff Kirsher */ 2357a6a5580cSJeff Kirsher 2358a6a5580cSJeff Kirsher for (i = 0; i < ARRAY_SIZE(enic->bar); i++) { 2359a6a5580cSJeff Kirsher if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM)) 2360a6a5580cSJeff Kirsher continue; 2361a6a5580cSJeff Kirsher enic->bar[i].len = pci_resource_len(pdev, i); 2362a6a5580cSJeff Kirsher enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len); 2363a6a5580cSJeff Kirsher if (!enic->bar[i].vaddr) { 2364a6a5580cSJeff Kirsher dev_err(dev, "Cannot memory-map BAR %d, aborting\n", i); 2365a6a5580cSJeff Kirsher err = -ENODEV; 2366a6a5580cSJeff Kirsher goto err_out_iounmap; 2367a6a5580cSJeff Kirsher } 2368a6a5580cSJeff Kirsher enic->bar[i].bus_addr = pci_resource_start(pdev, i); 2369a6a5580cSJeff Kirsher } 2370a6a5580cSJeff Kirsher 2371a6a5580cSJeff Kirsher /* Register vNIC device 2372a6a5580cSJeff Kirsher */ 2373a6a5580cSJeff Kirsher 2374a6a5580cSJeff Kirsher enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar, 2375a6a5580cSJeff Kirsher ARRAY_SIZE(enic->bar)); 2376a6a5580cSJeff Kirsher if (!enic->vdev) { 2377a6a5580cSJeff Kirsher dev_err(dev, "vNIC registration failed, aborting\n"); 2378a6a5580cSJeff Kirsher err = -ENODEV; 2379a6a5580cSJeff Kirsher goto err_out_iounmap; 2380a6a5580cSJeff Kirsher } 2381a6a5580cSJeff Kirsher 23828749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 23838749b427SRoopa Prabhu /* Get number of subvnics */ 23848749b427SRoopa Prabhu pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 23858749b427SRoopa Prabhu if (pos) { 23868749b427SRoopa Prabhu pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, 2387413708bbSDan Carpenter &enic->num_vfs); 23888749b427SRoopa Prabhu if (enic->num_vfs) { 23898749b427SRoopa Prabhu err = pci_enable_sriov(pdev, enic->num_vfs); 23908749b427SRoopa Prabhu if (err) { 23918749b427SRoopa Prabhu dev_err(dev, "SRIOV enable failed, aborting." 23928749b427SRoopa Prabhu " pci_enable_sriov() returned %d\n", 23938749b427SRoopa Prabhu err); 23948749b427SRoopa Prabhu goto err_out_vnic_unregister; 23958749b427SRoopa Prabhu } 23968749b427SRoopa Prabhu enic->priv_flags |= ENIC_SRIOV_ENABLED; 2397b67f231dSRoopa Prabhu num_pps = enic->num_vfs; 23988749b427SRoopa Prabhu } 23998749b427SRoopa Prabhu } 24008749b427SRoopa Prabhu #endif 2401ca2b721dSRoopa Prabhu 24023f192795SRoopa Prabhu /* Allocate structure for port profiles */ 2403a1de2219SThomas Meyer enic->pp = kcalloc(num_pps, sizeof(*enic->pp), GFP_KERNEL); 24043f192795SRoopa Prabhu if (!enic->pp) { 24053f192795SRoopa Prabhu err = -ENOMEM; 2406ca2b721dSRoopa Prabhu goto err_out_disable_sriov_pp; 24073f192795SRoopa Prabhu } 24083f192795SRoopa Prabhu 2409a6a5580cSJeff Kirsher /* Issue device open to get device in known state 2410a6a5580cSJeff Kirsher */ 2411a6a5580cSJeff Kirsher 2412a6a5580cSJeff Kirsher err = enic_dev_open(enic); 2413a6a5580cSJeff Kirsher if (err) { 2414a6a5580cSJeff Kirsher dev_err(dev, "vNIC dev open failed, aborting\n"); 2415ca2b721dSRoopa Prabhu goto err_out_disable_sriov; 2416a6a5580cSJeff Kirsher } 2417a6a5580cSJeff Kirsher 2418a6a5580cSJeff Kirsher /* Setup devcmd lock 2419a6a5580cSJeff Kirsher */ 2420a6a5580cSJeff Kirsher 2421a6a5580cSJeff Kirsher spin_lock_init(&enic->devcmd_lock); 2422a6a5580cSJeff Kirsher 2423a6a5580cSJeff Kirsher /* 2424a6a5580cSJeff Kirsher * Set ingress vlan rewrite mode before vnic initialization 2425a6a5580cSJeff Kirsher */ 2426a6a5580cSJeff Kirsher 2427a6a5580cSJeff Kirsher err = enic_dev_set_ig_vlan_rewrite_mode(enic); 2428a6a5580cSJeff Kirsher if (err) { 2429a6a5580cSJeff Kirsher dev_err(dev, 2430a6a5580cSJeff Kirsher "Failed to set ingress vlan rewrite mode, aborting.\n"); 2431a6a5580cSJeff Kirsher goto err_out_dev_close; 2432a6a5580cSJeff Kirsher } 2433a6a5580cSJeff Kirsher 2434a6a5580cSJeff Kirsher /* Issue device init to initialize the vnic-to-switch link. 2435a6a5580cSJeff Kirsher * We'll start with carrier off and wait for link UP 2436a6a5580cSJeff Kirsher * notification later to turn on carrier. We don't need 2437a6a5580cSJeff Kirsher * to wait here for the vnic-to-switch link initialization 2438a6a5580cSJeff Kirsher * to complete; link UP notification is the indication that 2439a6a5580cSJeff Kirsher * the process is complete. 2440a6a5580cSJeff Kirsher */ 2441a6a5580cSJeff Kirsher 2442a6a5580cSJeff Kirsher netif_carrier_off(netdev); 2443a6a5580cSJeff Kirsher 2444a6a5580cSJeff Kirsher /* Do not call dev_init for a dynamic vnic. 2445a6a5580cSJeff Kirsher * For a dynamic vnic, init_prov_info will be 2446a6a5580cSJeff Kirsher * called later by an upper layer. 2447a6a5580cSJeff Kirsher */ 2448a6a5580cSJeff Kirsher 24492b68c181SRoopa Prabhu if (!enic_is_dynamic(enic)) { 2450a6a5580cSJeff Kirsher err = vnic_dev_init(enic->vdev, 0); 2451a6a5580cSJeff Kirsher if (err) { 2452a6a5580cSJeff Kirsher dev_err(dev, "vNIC dev init failed, aborting\n"); 2453a6a5580cSJeff Kirsher goto err_out_dev_close; 2454a6a5580cSJeff Kirsher } 2455a6a5580cSJeff Kirsher } 2456a6a5580cSJeff Kirsher 2457a6a5580cSJeff Kirsher err = enic_dev_init(enic); 2458a6a5580cSJeff Kirsher if (err) { 2459a6a5580cSJeff Kirsher dev_err(dev, "Device initialization failed, aborting\n"); 2460a6a5580cSJeff Kirsher goto err_out_dev_close; 2461a6a5580cSJeff Kirsher } 2462a6a5580cSJeff Kirsher 2463a6a5580cSJeff Kirsher /* Setup notification timer, HW reset task, and wq locks 2464a6a5580cSJeff Kirsher */ 2465a6a5580cSJeff Kirsher 2466a6a5580cSJeff Kirsher init_timer(&enic->notify_timer); 2467a6a5580cSJeff Kirsher enic->notify_timer.function = enic_notify_timer; 2468a6a5580cSJeff Kirsher enic->notify_timer.data = (unsigned long)enic; 2469a6a5580cSJeff Kirsher 2470a6a5580cSJeff Kirsher INIT_WORK(&enic->reset, enic_reset); 2471a6a5580cSJeff Kirsher INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work); 2472a6a5580cSJeff Kirsher 2473a6a5580cSJeff Kirsher for (i = 0; i < enic->wq_count; i++) 2474a6a5580cSJeff Kirsher spin_lock_init(&enic->wq_lock[i]); 2475a6a5580cSJeff Kirsher 2476a6a5580cSJeff Kirsher /* Register net device 2477a6a5580cSJeff Kirsher */ 2478a6a5580cSJeff Kirsher 2479a6a5580cSJeff Kirsher enic->port_mtu = enic->config.mtu; 2480a6a5580cSJeff Kirsher (void)enic_change_mtu(netdev, enic->port_mtu); 2481a6a5580cSJeff Kirsher 2482a6a5580cSJeff Kirsher err = enic_set_mac_addr(netdev, enic->mac_addr); 2483a6a5580cSJeff Kirsher if (err) { 2484a6a5580cSJeff Kirsher dev_err(dev, "Invalid MAC address, aborting\n"); 2485a6a5580cSJeff Kirsher goto err_out_dev_deinit; 2486a6a5580cSJeff Kirsher } 2487a6a5580cSJeff Kirsher 2488a6a5580cSJeff Kirsher enic->tx_coalesce_usecs = enic->config.intr_timer_usec; 2489a6a5580cSJeff Kirsher enic->rx_coalesce_usecs = enic->tx_coalesce_usecs; 2490a6a5580cSJeff Kirsher 24917335903cSRoopa Prabhu if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic)) 2492a6a5580cSJeff Kirsher netdev->netdev_ops = &enic_netdev_dynamic_ops; 2493a6a5580cSJeff Kirsher else 2494a6a5580cSJeff Kirsher netdev->netdev_ops = &enic_netdev_ops; 2495a6a5580cSJeff Kirsher 2496a6a5580cSJeff Kirsher netdev->watchdog_timeo = 2 * HZ; 2497a6a5580cSJeff Kirsher netdev->ethtool_ops = &enic_ethtool_ops; 2498a6a5580cSJeff Kirsher 2499f646968fSPatrick McHardy netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2500a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, LOOP)) { 2501f646968fSPatrick McHardy netdev->features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2502a6a5580cSJeff Kirsher enic->loop_enable = 1; 2503a6a5580cSJeff Kirsher enic->loop_tag = enic->config.loop_tag; 2504a6a5580cSJeff Kirsher dev_info(dev, "loopback tag=0x%04x\n", enic->loop_tag); 2505a6a5580cSJeff Kirsher } 2506a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, TXCSUM)) 2507a6a5580cSJeff Kirsher netdev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM; 2508a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, TSO)) 2509a6a5580cSJeff Kirsher netdev->hw_features |= NETIF_F_TSO | 2510a6a5580cSJeff Kirsher NETIF_F_TSO6 | NETIF_F_TSO_ECN; 2511a6a5580cSJeff Kirsher if (ENIC_SETTING(enic, RXCSUM)) 2512a6a5580cSJeff Kirsher netdev->hw_features |= NETIF_F_RXCSUM; 2513a6a5580cSJeff Kirsher 2514a6a5580cSJeff Kirsher netdev->features |= netdev->hw_features; 2515a6a5580cSJeff Kirsher 2516a6a5580cSJeff Kirsher if (using_dac) 2517a6a5580cSJeff Kirsher netdev->features |= NETIF_F_HIGHDMA; 2518a6a5580cSJeff Kirsher 251901789349SJiri Pirko netdev->priv_flags |= IFF_UNICAST_FLT; 252001789349SJiri Pirko 2521a6a5580cSJeff Kirsher err = register_netdev(netdev); 2522a6a5580cSJeff Kirsher if (err) { 2523a6a5580cSJeff Kirsher dev_err(dev, "Cannot register net device, aborting\n"); 2524a6a5580cSJeff Kirsher goto err_out_dev_deinit; 2525a6a5580cSJeff Kirsher } 2526a6a5580cSJeff Kirsher 2527a6a5580cSJeff Kirsher return 0; 2528a6a5580cSJeff Kirsher 2529a6a5580cSJeff Kirsher err_out_dev_deinit: 2530a6a5580cSJeff Kirsher enic_dev_deinit(enic); 2531a6a5580cSJeff Kirsher err_out_dev_close: 2532a6a5580cSJeff Kirsher vnic_dev_close(enic->vdev); 25338749b427SRoopa Prabhu err_out_disable_sriov: 2534ca2b721dSRoopa Prabhu kfree(enic->pp); 2535ca2b721dSRoopa Prabhu err_out_disable_sriov_pp: 25368749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 25378749b427SRoopa Prabhu if (enic_sriov_enabled(enic)) { 25388749b427SRoopa Prabhu pci_disable_sriov(pdev); 25398749b427SRoopa Prabhu enic->priv_flags &= ~ENIC_SRIOV_ENABLED; 25408749b427SRoopa Prabhu } 2541a6a5580cSJeff Kirsher err_out_vnic_unregister: 25428749b427SRoopa Prabhu #endif 254335d87e33SRoopa Prabhu vnic_dev_unregister(enic->vdev); 2544a6a5580cSJeff Kirsher err_out_iounmap: 2545a6a5580cSJeff Kirsher enic_iounmap(enic); 2546a6a5580cSJeff Kirsher err_out_release_regions: 2547a6a5580cSJeff Kirsher pci_release_regions(pdev); 2548a6a5580cSJeff Kirsher err_out_disable_device: 2549a6a5580cSJeff Kirsher pci_disable_device(pdev); 2550a6a5580cSJeff Kirsher err_out_free_netdev: 2551a6a5580cSJeff Kirsher pci_set_drvdata(pdev, NULL); 2552a6a5580cSJeff Kirsher free_netdev(netdev); 2553a6a5580cSJeff Kirsher 2554a6a5580cSJeff Kirsher return err; 2555a6a5580cSJeff Kirsher } 2556a6a5580cSJeff Kirsher 2557854de92fSBill Pemberton static void enic_remove(struct pci_dev *pdev) 2558a6a5580cSJeff Kirsher { 2559a6a5580cSJeff Kirsher struct net_device *netdev = pci_get_drvdata(pdev); 2560a6a5580cSJeff Kirsher 2561a6a5580cSJeff Kirsher if (netdev) { 2562a6a5580cSJeff Kirsher struct enic *enic = netdev_priv(netdev); 2563a6a5580cSJeff Kirsher 2564a6a5580cSJeff Kirsher cancel_work_sync(&enic->reset); 2565a6a5580cSJeff Kirsher cancel_work_sync(&enic->change_mtu_work); 2566a6a5580cSJeff Kirsher unregister_netdev(netdev); 2567a6a5580cSJeff Kirsher enic_dev_deinit(enic); 2568a6a5580cSJeff Kirsher vnic_dev_close(enic->vdev); 25698749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV 25708749b427SRoopa Prabhu if (enic_sriov_enabled(enic)) { 25718749b427SRoopa Prabhu pci_disable_sriov(pdev); 25728749b427SRoopa Prabhu enic->priv_flags &= ~ENIC_SRIOV_ENABLED; 25738749b427SRoopa Prabhu } 25748749b427SRoopa Prabhu #endif 25753f192795SRoopa Prabhu kfree(enic->pp); 2576a6a5580cSJeff Kirsher vnic_dev_unregister(enic->vdev); 2577a6a5580cSJeff Kirsher enic_iounmap(enic); 2578a6a5580cSJeff Kirsher pci_release_regions(pdev); 2579a6a5580cSJeff Kirsher pci_disable_device(pdev); 2580a6a5580cSJeff Kirsher pci_set_drvdata(pdev, NULL); 2581a6a5580cSJeff Kirsher free_netdev(netdev); 2582a6a5580cSJeff Kirsher } 2583a6a5580cSJeff Kirsher } 2584a6a5580cSJeff Kirsher 2585a6a5580cSJeff Kirsher static struct pci_driver enic_driver = { 2586a6a5580cSJeff Kirsher .name = DRV_NAME, 2587a6a5580cSJeff Kirsher .id_table = enic_id_table, 2588a6a5580cSJeff Kirsher .probe = enic_probe, 2589854de92fSBill Pemberton .remove = enic_remove, 2590a6a5580cSJeff Kirsher }; 2591a6a5580cSJeff Kirsher 2592a6a5580cSJeff Kirsher static int __init enic_init_module(void) 2593a6a5580cSJeff Kirsher { 2594a6a5580cSJeff Kirsher pr_info("%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 2595a6a5580cSJeff Kirsher 2596a6a5580cSJeff Kirsher return pci_register_driver(&enic_driver); 2597a6a5580cSJeff Kirsher } 2598a6a5580cSJeff Kirsher 2599a6a5580cSJeff Kirsher static void __exit enic_cleanup_module(void) 2600a6a5580cSJeff Kirsher { 2601a6a5580cSJeff Kirsher pci_unregister_driver(&enic_driver); 2602a6a5580cSJeff Kirsher } 2603a6a5580cSJeff Kirsher 2604a6a5580cSJeff Kirsher module_init(enic_init_module); 2605a6a5580cSJeff Kirsher module_exit(enic_cleanup_module); 2606