| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Hariprasad Shenai | 8169 | 25.23% | 85 | 26.07% |
| Dimitris Michailidis | 7305 | 22.56% | 27 | 8.28% |
| Vipul Pandya | 3344 | 10.33% | 14 | 4.29% |
| Rahul Lakkireddy | 3113 | 9.62% | 18 | 5.52% |
| Ganesh Goudar | 2736 | 8.45% | 43 | 13.19% |
| Arjun V | 1878 | 5.80% | 18 | 5.52% |
| Anish Bhatt | 1294 | 4.00% | 10 | 3.07% |
| Vishal Kulkarni | 768 | 2.37% | 6 | 1.84% |
| Kumar Sanghvi | 586 | 1.81% | 17 | 5.21% |
| Varun Prakash | 459 | 1.42% | 5 | 1.53% |
| Santosh Rastapur | 448 | 1.38% | 5 | 1.53% |
| Atul Gupta | 437 | 1.35% | 4 | 1.23% |
| Raju Rangoju | 317 | 0.98% | 7 | 2.15% |
| Shahjada Abul Husain | 297 | 0.92% | 2 | 0.61% |
| Casey Leedom | 288 | 0.89% | 2 | 0.61% |
| Nirranjan Kirubaharan | 199 | 0.61% | 1 | 0.31% |
| Jiri Pirko | 134 | 0.41% | 6 | 1.84% |
| Gavin Shan | 101 | 0.31% | 3 | 0.92% |
| Harsh Jain | 72 | 0.22% | 1 | 0.31% |
| Steve Wise | 70 | 0.22% | 1 | 0.31% |
| Guilherme G. Piccoli | 48 | 0.15% | 2 | 0.61% |
| Linus Torvalds | 48 | 0.15% | 3 | 0.92% |
| Yue haibing | 47 | 0.15% | 2 | 0.61% |
| David S. Miller | 46 | 0.14% | 3 | 0.92% |
| Michał Mirosław | 33 | 0.10% | 2 | 0.61% |
| John (Jay) Hernandez | 16 | 0.05% | 1 | 0.31% |
| Jarod Wilson | 13 | 0.04% | 1 | 0.31% |
| Pablo Neira Ayuso | 12 | 0.04% | 3 | 0.92% |
| Arnd Bergmann | 12 | 0.04% | 2 | 0.61% |
| Michal Hocko | 9 | 0.03% | 1 | 0.31% |
| François Romieu | 7 | 0.02% | 1 | 0.31% |
| Parav Pandit | 6 | 0.02% | 1 | 0.31% |
| Alexander Duyck | 5 | 0.02% | 2 | 0.61% |
| Surendra Mobiya | 5 | 0.02% | 1 | 0.31% |
| Thadeu Lima de Souza Cascardo | 4 | 0.01% | 1 | 0.31% |
| Roland Dreier | 4 | 0.01% | 1 | 0.31% |
| Naresh Kumar Inna | 4 | 0.01% | 1 | 0.31% |
| Stephen Hemminger | 4 | 0.01% | 3 | 0.92% |
| Dan Carpenter | 3 | 0.01% | 1 | 0.31% |
| Li RongQing | 3 | 0.01% | 1 | 0.31% |
| Jakub Kiciński | 3 | 0.01% | 1 | 0.31% |
| Ben Hutchings | 3 | 0.01% | 2 | 0.61% |
| Veaceslav Falico | 3 | 0.01% | 1 | 0.31% |
| Kees Cook | 3 | 0.01% | 1 | 0.31% |
| Patrick McHardy | 3 | 0.01% | 1 | 0.31% |
| Frederick Lawler | 2 | 0.01% | 1 | 0.31% |
| Wei Yongjun | 2 | 0.01% | 2 | 0.61% |
| Björn Helgaas | 2 | 0.01% | 1 | 0.31% |
| Eyal Perry | 2 | 0.01% | 1 | 0.31% |
| Paolo Abeni | 1 | 0.00% | 1 | 0.31% |
| Danny Kukawka | 1 | 0.00% | 1 | 0.31% |
| Christophe Jaillet | 1 | 0.00% | 1 | 0.31% |
| Joe Perches | 1 | 0.00% | 1 | 0.31% |
| Divy Le Ray | 1 | 0.00% | 1 | 0.31% |
| Alexander Gordeev | 1 | 0.00% | 1 | 0.31% |
| Baoyou Xie | 1 | 0.00% | 1 | 0.31% |
| Total | 32374 | 326 |
/* * This file is part of the Chelsio T4 Ethernet driver for Linux. * * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/bitmap.h> #include <linux/crc32.h> #include <linux/ctype.h> #include <linux/debugfs.h> #include <linux/err.h> #include <linux/etherdevice.h> #include <linux/firmware.h> #include <linux/if.h> #include <linux/if_vlan.h> #include <linux/init.h> #include <linux/log2.h> #include <linux/mdio.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/mutex.h> #include <linux/netdevice.h> #include <linux/pci.h> #include <linux/aer.h> #include <linux/rtnetlink.h> #include <linux/sched.h> #include <linux/seq_file.h> #include <linux/sockios.h> #include <linux/vmalloc.h> #include <linux/workqueue.h> #include <net/neighbour.h> #include <net/netevent.h> #include <net/addrconf.h> #include <net/bonding.h> #include <linux/uaccess.h> #include <linux/crash_dump.h> #include <net/udp_tunnel.h> #include <net/xfrm.h> #include "cxgb4.h" #include "cxgb4_filter.h" #include "t4_regs.h" #include "t4_values.h" #include "t4_msg.h" #include "t4fw_api.h" #include "t4fw_version.h" #include "cxgb4_dcb.h" #include "srq.h" #include "cxgb4_debugfs.h" #include "clip_tbl.h" #include "l2t.h" #include "smt.h" #include "sched.h" #include "cxgb4_tc_u32.h" #include "cxgb4_tc_flower.h" #include "cxgb4_tc_mqprio.h" #include "cxgb4_tc_matchall.h" #include "cxgb4_ptp.h" #include "cxgb4_cudbg.h" char cxgb4_driver_name[] = KBUILD_MODNAME; #define DRV_DESC "Chelsio T4/T5/T6 Network Driver" #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \ NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\ NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR) /* Macros needed to support the PCI Device ID Table ... */ #define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \ static const struct pci_device_id cxgb4_pci_tbl[] = { #define CXGB4_UNIFIED_PF 0x4 #define CH_PCI_DEVICE_ID_FUNCTION CXGB4_UNIFIED_PF /* Include PCI Device IDs for both PF4 and PF0-3 so our PCI probe() routine is * called for both. */ #define CH_PCI_DEVICE_ID_FUNCTION2 0x0 #define CH_PCI_ID_TABLE_ENTRY(devid) \ {PCI_VDEVICE(CHELSIO, (devid)), CXGB4_UNIFIED_PF} #define CH_PCI_DEVICE_ID_TABLE_DEFINE_END \ { 0, } \ } #include "t4_pci_id_tbl.h" #define FW4_FNAME "cxgb4/t4fw.bin" #define FW5_FNAME "cxgb4/t5fw.bin" #define FW6_FNAME "cxgb4/t6fw.bin" #define FW4_CFNAME "cxgb4/t4-config.txt" #define FW5_CFNAME "cxgb4/t5-config.txt" #define FW6_CFNAME "cxgb4/t6-config.txt" #define PHY_AQ1202_FIRMWARE "cxgb4/aq1202_fw.cld" #define PHY_BCM84834_FIRMWARE "cxgb4/bcm8483.bin" #define PHY_AQ1202_DEVICEID 0x4409 #define PHY_BCM84834_DEVICEID 0x4486 MODULE_DESCRIPTION(DRV_DESC); MODULE_AUTHOR("Chelsio Communications"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_DEVICE_TABLE(pci, cxgb4_pci_tbl); MODULE_FIRMWARE(FW4_FNAME); MODULE_FIRMWARE(FW5_FNAME); MODULE_FIRMWARE(FW6_FNAME); /* * The driver uses the best interrupt scheme available on a platform in the * order MSI-X, MSI, legacy INTx interrupts. This parameter determines which * of these schemes the driver may consider as follows: * * msi = 2: choose from among all three options * msi = 1: only consider MSI and INTx interrupts * msi = 0: force INTx interrupts */ static int msi = 2; module_param(msi, int, 0644); MODULE_PARM_DESC(msi, "whether to use INTx (0), MSI (1) or MSI-X (2)"); /* * Normally we tell the chip to deliver Ingress Packets into our DMA buffers * offset by 2 bytes in order to have the IP headers line up on 4-byte * boundaries. This is a requirement for many architectures which will throw * a machine check fault if an attempt is made to access one of the 4-byte IP * header fields on a non-4-byte boundary. And it's a major performance issue * even on some architectures which allow it like some implementations of the * x86 ISA. However, some architectures don't mind this and for some very * edge-case performance sensitive applications (like forwarding large volumes * of small packets), setting this DMA offset to 0 will decrease the number of * PCI-E Bus transfers enough to measurably affect performance. */ static int rx_dma_offset = 2; /* TX Queue select used to determine what algorithm to use for selecting TX * queue. Select between the kernel provided function (select_queue=0) or user * cxgb_select_queue function (select_queue=1) * * Default: select_queue=0 */ static int select_queue; module_param(select_queue, int, 0644); MODULE_PARM_DESC(select_queue, "Select between kernel provided method of selecting or driver method of selecting TX queue. Default is kernel method."); static struct dentry *cxgb4_debugfs_root; LIST_HEAD(adapter_list); DEFINE_MUTEX(uld_mutex); static int cfg_queues(struct adapter *adap); static void link_report(struct net_device *dev) { if (!netif_carrier_ok(dev)) netdev_info(dev, "link down\n"); else { static const char *fc[] = { "no", "Rx", "Tx", "Tx/Rx" }; const char *s; const struct port_info *p = netdev_priv(dev); switch (p->link_cfg.speed) { case 100: s = "100Mbps"; break; case 1000: s = "1Gbps"; break; case 10000: s = "10Gbps"; break; case 25000: s = "25Gbps"; break; case 40000: s = "40Gbps"; break; case 50000: s = "50Gbps"; break; case 100000: s = "100Gbps"; break; default: pr_info("%s: unsupported speed: %d\n", dev->name, p->link_cfg.speed); return; } netdev_info(dev, "link up, %s, full-duplex, %s PAUSE\n", s, fc[p->link_cfg.fc]); } } #ifdef CONFIG_CHELSIO_T4_DCB /* Set up/tear down Data Center Bridging Priority mapping for a net device. */ static void dcb_tx_queue_prio_enable(struct net_device *dev, int enable) { struct port_info *pi = netdev_priv(dev); struct adapter *adap = pi->adapter; struct sge_eth_txq *txq = &adap->sge.ethtxq[pi->first_qset]; int i; /* We use a simple mapping of Port TX Queue Index to DCB * Priority when we're enabling DCB. */ for (i = 0; i < pi->nqsets; i++, txq++) { u32 name, value; int err; name = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DMAQ) | FW_PARAMS_PARAM_X_V( FW_PARAMS_PARAM_DMAQ_EQ_DCBPRIO_ETH) | FW_PARAMS_PARAM_YZ_V(txq->q.cntxt_id)); value = enable ? i : 0xffffffff; /* Since we can be called while atomic (from "interrupt * level") we need to issue the Set Parameters Commannd * without sleeping (timeout < 0). */ err = t4_set_params_timeout(adap, adap->mbox, adap->pf, 0, 1, &name, &value, -FW_CMD_MAX_TIMEOUT); if (err) dev_err(adap->pdev_dev, "Can't %s DCB Priority on port %d, TX Queue %d: err=%d\n", enable ? "set" : "unset", pi->port_id, i, -err); else txq->dcb_prio = enable ? value : 0; } } int cxgb4_dcb_enabled(const struct net_device *dev) { struct port_info *pi = netdev_priv(dev); if (!pi->dcb.enabled) return 0; return ((pi->dcb.state == CXGB4_DCB_STATE_FW_ALLSYNCED) || (pi->dcb.state == CXGB4_DCB_STATE_HOST)); } #endif /* CONFIG_CHELSIO_T4_DCB */ void t4_os_link_changed(struct adapter *adapter, int port_id, int link_stat) { struct net_device *dev = adapter->port[port_id]; /* Skip changes from disabled ports. */ if (netif_running(dev) && link_stat != netif_carrier_ok(dev)) { if (link_stat) netif_carrier_on(dev); else { #ifdef CONFIG_CHELSIO_T4_DCB if (cxgb4_dcb_enabled(dev)) { cxgb4_dcb_reset(dev); dcb_tx_queue_prio_enable(dev, false); } #endif /* CONFIG_CHELSIO_T4_DCB */ netif_carrier_off(dev); } link_report(dev); } } void t4_os_portmod_changed(struct adapter *adap, int port_id) { static const char *mod_str[] = { NULL, "LR", "SR", "ER", "passive DA", "active DA", "LRM" }; struct net_device *dev = adap->port[port_id]; struct port_info *pi = netdev_priv(dev); if (pi->mod_type == FW_PORT_MOD_TYPE_NONE) netdev_info(dev, "port module unplugged\n"); else if (pi->mod_type < ARRAY_SIZE(mod_str)) netdev_info(dev, "%s module inserted\n", mod_str[pi->mod_type]); else if (pi->mod_type == FW_PORT_MOD_TYPE_NOTSUPPORTED) netdev_info(dev, "%s: unsupported port module inserted\n", dev->name); else if (pi->mod_type == FW_PORT_MOD_TYPE_UNKNOWN) netdev_info(dev, "%s: unknown port module inserted\n", dev->name); else if (pi->mod_type == FW_PORT_MOD_TYPE_ERROR) netdev_info(dev, "%s: transceiver module error\n", dev->name); else netdev_info(dev, "%s: unknown module type %d inserted\n", dev->name, pi->mod_type); /* If the interface is running, then we'll need any "sticky" Link * Parameters redone with a new Transceiver Module. */ pi->link_cfg.redo_l1cfg = netif_running(dev); } int dbfifo_int_thresh = 10; /* 10 == 640 entry threshold */ module_param(dbfifo_int_thresh, int, 0644); MODULE_PARM_DESC(dbfifo_int_thresh, "doorbell fifo interrupt threshold"); /* * usecs to sleep while draining the dbfifo */ static int dbfifo_drain_delay = 1000; module_param(dbfifo_drain_delay, int, 0644); MODULE_PARM_DESC(dbfifo_drain_delay, "usecs to sleep while draining the dbfifo"); static inline int cxgb4_set_addr_hash(struct port_info *pi) { struct adapter *adap = pi->adapter; u64 vec = 0; bool ucast = false; struct hash_mac_addr *entry; /* Calculate the hash vector for the updated list and program it */ list_for_each_entry(entry, &adap->mac_hlist, list) { ucast |= is_unicast_ether_addr(entry->addr); vec |= (1ULL << hash_mac_addr(entry->addr)); } return t4_set_addr_hash(adap, adap->mbox, pi->viid, ucast, vec, false); } static int cxgb4_mac_sync(struct net_device *netdev, const u8 *mac_addr) { struct port_info *pi = netdev_priv(netdev); struct adapter *adap = pi->adapter; int ret; u64 mhash = 0; u64 uhash = 0; /* idx stores the index of allocated filters, * its size should be modified based on the number of * MAC addresses that we allocate filters for */ u16 idx[1] = {}; bool free = false; bool ucast = is_unicast_ether_addr(mac_addr); const u8 *maclist[1] = {mac_addr}; struct hash_mac_addr *new_entry; ret = cxgb4_alloc_mac_filt(adap, pi->viid, free, 1, maclist, idx, ucast ? &uhash : &mhash, false); if (ret < 0) goto out; /* if hash != 0, then add the addr to hash addr list * so on the end we will calculate the hash for the * list and program it */ if (uhash || mhash) { new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC); if (!new_entry) return -ENOMEM; ether_addr_copy(new_entry->addr, mac_addr); list_add_tail(&new_entry->list, &adap->mac_hlist); ret = cxgb4_set_addr_hash(pi); } out: return ret < 0 ? ret : 0; } static int cxgb4_mac_unsync(struct net_device *netdev, const u8 *mac_addr) { struct port_info *pi = netdev_priv(netdev); struct adapter *adap = pi->adapter; int ret; const u8 *maclist[1] = {mac_addr}; struct hash_mac_addr *entry, *tmp; /* If the MAC address to be removed is in the hash addr * list, delete it from the list and update hash vector */ list_for_each_entry_safe(entry, tmp, &adap->mac_hlist, list) { if (ether_addr_equal(entry->addr, mac_addr)) { list_del(&entry->list); kfree(entry); return cxgb4_set_addr_hash(pi); } } ret = cxgb4_free_mac_filt(adap, pi->viid, 1, maclist, false); return ret < 0 ? -EINVAL : 0; } /* * Set Rx properties of a port, such as promiscruity, address filters, and MTU. * If @mtu is -1 it is left unchanged. */ static int set_rxmode(struct net_device *dev, int mtu, bool sleep_ok) { struct port_info *pi = netdev_priv(dev); struct adapter *adapter = pi->adapter; __dev_uc_sync(dev, cxgb4_mac_sync, cxgb4_mac_unsync); __dev_mc_sync(dev, cxgb4_mac_sync, cxgb4_mac_unsync); return t4_set_rxmode(adapter, adapter->mbox, pi->viid, mtu, (dev->flags & IFF_PROMISC) ? 1 : 0, (dev->flags & IFF_ALLMULTI) ? 1 : 0, 1, -1, sleep_ok); } /** * cxgb4_change_mac - Update match filter for a MAC address. * @pi: the port_info * @viid: the VI id * @tcam_idx: TCAM index of existing filter for old value of MAC address, * or -1 * @addr: the new MAC address value * @persist: whether a new MAC allocation should be persistent * @add_smt: if true also add the address to the HW SMT * * Modifies an MPS filter and sets it to the new MAC address if * @tcam_idx >= 0, or adds the MAC address to a new filter if * @tcam_idx < 0. In the latter case the address is added persistently * if @persist is %true. * Addresses are programmed to hash region, if tcam runs out of entries. * */ int cxgb4_change_mac(struct port_info *pi, unsigned int viid, int *tcam_idx, const u8 *addr, bool persist, u8 *smt_idx) { struct adapter *adapter = pi->adapter; struct hash_mac_addr *entry, *new_entry; int ret; ret = t4_change_mac(adapter, adapter->mbox, viid, *tcam_idx, addr, persist, smt_idx); /* We ran out of TCAM entries. try programming hash region. */ if (ret == -ENOMEM) { /* If the MAC address to be updated is in the hash addr * list, update it from the list */ list_for_each_entry(entry, &adapter->mac_hlist, list) { if (entry->iface_mac) { ether_addr_copy(entry->addr, addr); goto set_hash; } } new_entry = kzalloc(sizeof(*new_entry), GFP_KERNEL); if (!new_entry) return -ENOMEM; ether_addr_copy(new_entry->addr, addr); new_entry->iface_mac = true; list_add_tail(&new_entry->list, &adapter->mac_hlist); set_hash: ret = cxgb4_set_addr_hash(pi); } else if (ret >= 0) { *tcam_idx = ret; ret = 0; } return ret; } /* * link_start - enable a port * @dev: the port to enable * * Performs the MAC and PHY actions needed to enable a port. */ static int link_start(struct net_device *dev) { int ret; struct port_info *pi = netdev_priv(dev); unsigned int mb = pi->adapter->pf; /* * We do not set address filters and promiscuity here, the stack does * that step explicitly. */ ret = t4_set_rxmode(pi->adapter, mb, pi->viid, dev->mtu, -1, -1, -1, !!(dev->features & NETIF_F_HW_VLAN_CTAG_RX), true); if (ret == 0) ret = cxgb4_update_mac_filt(pi, pi->viid, &pi->xact_addr_filt, dev->dev_addr, true, &pi->smt_idx); if (ret == 0) ret = t4_link_l1cfg(pi->adapter, mb, pi->tx_chan, &pi->link_cfg); if (ret == 0) { local_bh_disable(); ret = t4_enable_pi_params(pi->adapter, mb, pi, true, true, CXGB4_DCB_ENABLED); local_bh_enable(); } return ret; } #ifdef CONFIG_CHELSIO_T4_DCB /* Handle a Data Center Bridging update message from the firmware. */ static void dcb_rpl(struct adapter *adap, const struct fw_port_cmd *pcmd) { int port = FW_PORT_CMD_PORTID_G(ntohl(pcmd->op_to_portid)); struct net_device *dev = adap->port[adap->chan_map[port]]; int old_dcb_enabled = cxgb4_dcb_enabled(dev); int new_dcb_enabled; cxgb4_dcb_handle_fw_update(adap, pcmd); new_dcb_enabled = cxgb4_dcb_enabled(dev); /* If the DCB has become enabled or disabled on the port then we're * going to need to set up/tear down DCB Priority parameters for the * TX Queues associated with the port. */ if (new_dcb_enabled != old_dcb_enabled) dcb_tx_queue_prio_enable(dev, new_dcb_enabled); } #endif /* CONFIG_CHELSIO_T4_DCB */ /* Response queue handler for the FW event queue. */ static int fwevtq_handler(struct sge_rspq *q, const __be64 *rsp, const struct pkt_gl *gl) { u8 opcode = ((const struct rss_header *)rsp)->opcode; rsp++; /* skip RSS header */ /* FW can send EGR_UPDATEs encapsulated in a CPL_FW4_MSG. */ if (unlikely(opcode == CPL_FW4_MSG && ((const struct cpl_fw4_msg *)rsp)->type == FW_TYPE_RSSCPL)) { rsp++; opcode = ((const struct rss_header *)rsp)->opcode; rsp++; if (opcode != CPL_SGE_EGR_UPDATE) { dev_err(q->adap->pdev_dev, "unexpected FW4/CPL %#x on FW event queue\n" , opcode); goto out; } } if (likely(opcode == CPL_SGE_EGR_UPDATE)) { const struct cpl_sge_egr_update *p = (void *)rsp; unsigned int qid = EGR_QID_G(ntohl(p->opcode_qid)); struct sge_txq *txq; txq = q->adap->sge.egr_map[qid - q->adap->sge.egr_start]; txq->restarts++; if (txq->q_type == CXGB4_TXQ_ETH) { struct sge_eth_txq *eq; eq = container_of(txq, struct sge_eth_txq, q); t4_sge_eth_txq_egress_update(q->adap, eq, -1); } else { struct sge_uld_txq *oq; oq = container_of(txq, struct sge_uld_txq, q); tasklet_schedule(&oq->qresume_tsk); } } else if (opcode == CPL_FW6_MSG || opcode == CPL_FW4_MSG) { const struct cpl_fw6_msg *p = (void *)rsp; #ifdef CONFIG_CHELSIO_T4_DCB const struct fw_port_cmd *pcmd = (const void *)p->data; unsigned int cmd = FW_CMD_OP_G(ntohl(pcmd->op_to_portid)); unsigned int action = FW_PORT_CMD_ACTION_G(ntohl(pcmd->action_to_len16)); if (cmd == FW_PORT_CMD && (action == FW_PORT_ACTION_GET_PORT_INFO || action == FW_PORT_ACTION_GET_PORT_INFO32)) { int port = FW_PORT_CMD_PORTID_G( be32_to_cpu(pcmd->op_to_portid)); struct net_device *dev; int dcbxdis, state_input; dev = q->adap->port[q->adap->chan_map[port]]; dcbxdis = (action == FW_PORT_ACTION_GET_PORT_INFO ? !!(pcmd->u.info.dcbxdis_pkd & FW_PORT_CMD_DCBXDIS_F) : !!(be32_to_cpu(pcmd->u.info32.lstatus32_to_cbllen32) & FW_PORT_CMD_DCBXDIS32_F)); state_input = (dcbxdis ? CXGB4_DCB_INPUT_FW_DISABLED : CXGB4_DCB_INPUT_FW_ENABLED); cxgb4_dcb_state_fsm(dev, state_input); } if (cmd == FW_PORT_CMD && action == FW_PORT_ACTION_L2_DCB_CFG) dcb_rpl(q->adap, pcmd); else #endif if (p->type == 0) t4_handle_fw_rpl(q->adap, p->data); } else if (opcode == CPL_L2T_WRITE_RPL) { const struct cpl_l2t_write_rpl *p = (void *)rsp; do_l2t_write_rpl(q->adap, p); } else if (opcode == CPL_SMT_WRITE_RPL) { const struct cpl_smt_write_rpl *p = (void *)rsp; do_smt_write_rpl(q->adap, p); } else if (opcode == CPL_SET_TCB_RPL) { const struct cpl_set_tcb_rpl *p = (void *)rsp; filter_rpl(q->adap, p); } else if (opcode == CPL_ACT_OPEN_RPL) { const struct cpl_act_open_rpl *p = (void *)rsp; hash_filter_rpl(q->adap, p); } else if (opcode == CPL_ABORT_RPL_RSS) { const struct cpl_abort_rpl_rss *p = (void *)rsp; hash_del_filter_rpl(q->adap, p); } else if (opcode == CPL_SRQ_TABLE_RPL) { const struct cpl_srq_table_rpl *p = (void *)rsp; do_srq_table_rpl(q->adap, p); } else dev_err(q->adap->pdev_dev, "unexpected CPL %#x on FW event queue\n", opcode); out: return 0; } static void disable_msi(struct adapter *adapter) { if (adapter->flags & CXGB4_USING_MSIX) { pci_disable_msix(adapter->pdev); adapter->flags &= ~CXGB4_USING_MSIX; } else if (adapter->flags & CXGB4_USING_MSI) { pci_disable_msi(adapter->pdev); adapter->flags &= ~CXGB4_USING_MSI; } } /* * Interrupt handler for non-data events used with MSI-X. */ static irqreturn_t t4_nondata_intr(int irq, void *cookie) { struct adapter *adap = cookie; u32 v = t4_read_reg(adap, MYPF_REG(PL_PF_INT_CAUSE_A)); if (v & PFSW_F) { adap->swintr = 1; t4_write_reg(adap, MYPF_REG(PL_PF_INT_CAUSE_A), v); } if (adap->flags & CXGB4_MASTER_PF) t4_slow_intr_handler(adap); return IRQ_HANDLED; } int cxgb4_set_msix_aff(struct adapter *adap, unsigned short vec, cpumask_var_t *aff_mask, int idx) { int rv; if (!zalloc_cpumask_var(aff_mask, GFP_KERNEL)) { dev_err(adap->pdev_dev, "alloc_cpumask_var failed\n"); return -ENOMEM; } cpumask_set_cpu(cpumask_local_spread(idx, dev_to_node(adap->pdev_dev)), *aff_mask); rv = irq_set_affinity_hint(vec, *aff_mask); if (rv) dev_warn(adap->pdev_dev, "irq_set_affinity_hint %u failed %d\n", vec, rv); return 0; } void cxgb4_clear_msix_aff(unsigned short vec, cpumask_var_t aff_mask) { irq_set_affinity_hint(vec, NULL); free_cpumask_var(aff_mask); } static int request_msix_queue_irqs(struct adapter *adap) { struct sge *s = &adap->sge; struct msix_info *minfo; int err, ethqidx; if (s->fwevtq_msix_idx < 0) return -ENOMEM; err = request_irq(adap->msix_info[s->fwevtq_msix_idx].vec, t4_sge_intr_msix, 0, adap->msix_info[s->fwevtq_msix_idx].desc, &s->fw_evtq); if (err) return err; for_each_ethrxq(s, ethqidx) { minfo = s->ethrxq[ethqidx].msix; err = request_irq(minfo->vec, t4_sge_intr_msix, 0, minfo->desc, &s->ethrxq[ethqidx].rspq); if (err) goto unwind; cxgb4_set_msix_aff(adap, minfo->vec, &minfo->aff_mask, ethqidx); } return 0; unwind: while (--ethqidx >= 0) { minfo = s->ethrxq[ethqidx].msix; cxgb4_clear_msix_aff(minfo->vec, minfo->aff_mask); free_irq(minfo->vec, &s->ethrxq[ethqidx].rspq); } free_irq(adap->msix_info[s->fwevtq_msix_idx].vec, &s->fw_evtq); return err; } static void free_msix_queue_irqs(struct adapter *adap) { struct sge *s = &adap->sge; struct msix_info *minfo; int i; free_irq(adap->msix_info[s->fwevtq_msix_idx].vec, &s->fw_evtq); for_each_ethrxq(s, i) { minfo = s->ethrxq[i].msix; cxgb4_clear_msix_aff(minfo->vec, minfo->aff_mask); free_irq(minfo->vec, &s->ethrxq[i].rspq); } } static int setup_ppod_edram(struct adapter *adap) { unsigned int param, val; int ret; /* Driver sends FW_PARAMS_PARAM_DEV_PPOD_EDRAM read command to check * if firmware supports ppod edram feature or not. If firmware * returns 1, then driver can enable this feature by sending * FW_PARAMS_PARAM_DEV_PPOD_EDRAM write command with value 1 to * enable ppod edram feature. */ param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_PPOD_EDRAM)); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, ¶m, &val); if (ret < 0) { dev_warn(adap->pdev_dev, "querying PPOD_EDRAM support failed: %d\n", ret); return -1; } if (val != 1) return -1; ret = t4_set_params(adap, adap->mbox, adap->pf, 0, 1, ¶m, &val); if (ret < 0) { dev_err(adap->pdev_dev, "setting PPOD_EDRAM failed: %d\n", ret); return -1; } return 0; } static void adap_config_hpfilter(struct adapter *adapter) { u32 param, val = 0; int ret; /* Enable HP filter region. Older fw will fail this request and * it is fine. */ param = FW_PARAM_DEV(HPFILTER_REGION_SUPPORT); ret = t4_set_params(adapter, adapter->mbox, adapter->pf, 0, 1, ¶m, &val); /* An error means FW doesn't know about HP filter support, * it's not a problem, don't return an error. */ if (ret < 0) dev_err(adapter->pdev_dev, "HP filter region isn't supported by FW\n"); } /** * cxgb4_write_rss - write the RSS table for a given port * @pi: the port * @queues: array of queue indices for RSS * * Sets up the portion of the HW RSS table for the port's VI to distribute * packets to the Rx queues in @queues. * Should never be called before setting up sge eth rx queues */ int cxgb4_write_rss(const struct port_info *pi, const u16 *queues) { u16 *rss; int i, err; struct adapter *adapter = pi->adapter; const struct sge_eth_rxq *rxq; rxq = &adapter->sge.ethrxq[pi->first_qset]; rss = kmalloc_array(pi->rss_size, sizeof(u16), GFP_KERNEL); if (!rss) return -ENOMEM; /* map the queue indices to queue ids */ for (i = 0; i < pi->rss_size; i++, queues++) rss[i] = rxq[*queues].rspq.abs_id; err = t4_config_rss_range(adapter, adapter->pf, pi->viid, 0, pi->rss_size, rss, pi->rss_size); /* If Tunnel All Lookup isn't specified in the global RSS * Configuration, then we need to specify a default Ingress * Queue for any ingress packets which aren't hashed. We'll * use our first ingress queue ... */ if (!err) err = t4_config_vi_rss(adapter, adapter->mbox, pi->viid, FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN_F | FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN_F | FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN_F | FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN_F | FW_RSS_VI_CONFIG_CMD_UDPEN_F, rss[0]); kfree(rss); return err; } /** * setup_rss - configure RSS * @adap: the adapter * * Sets up RSS for each port. */ static int setup_rss(struct adapter *adap) { int i, j, err; for_each_port(adap, i) { const struct port_info *pi = adap2pinfo(adap, i); /* Fill default values with equal distribution */ for (j = 0; j < pi->rss_size; j++) pi->rss[j] = j % pi->nqsets; err = cxgb4_write_rss(pi, pi->rss); if (err) return err; } return 0; } /* * Return the channel of the ingress queue with the given qid. */ static unsigned int rxq_to_chan(const struct sge *p, unsigned int qid) { qid -= p->ingr_start; return netdev2pinfo(p->ingr_map[qid]->netdev)->tx_chan; } void cxgb4_quiesce_rx(struct sge_rspq *q) { if (q->handler) napi_disable(&q->napi); } /* * Wait until all NAPI handlers are descheduled. */ static void quiesce_rx(struct adapter *adap) { int i; for (i = 0; i < adap->sge.ingr_sz; i++) { struct sge_rspq *q = adap->sge.ingr_map[i]; if (!q) continue; cxgb4_quiesce_rx(q); } } /* Disable interrupt and napi handler */ static void disable_interrupts(struct adapter *adap) { struct sge *s = &adap->sge; if (adap->flags & CXGB4_FULL_INIT_DONE) { t4_intr_disable(adap); if (adap->flags & CXGB4_USING_MSIX) { free_msix_queue_irqs(adap); free_irq(adap->msix_info[s->nd_msix_idx].vec, adap); } else { free_irq(adap->pdev->irq, adap); } quiesce_rx(adap); } } void cxgb4_enable_rx(struct adapter *adap, struct sge_rspq *q) { if (q->handler) napi_enable(&q->napi); /* 0-increment GTS to start the timer and enable interrupts */ t4_write_reg(adap, MYPF_REG(SGE_PF_GTS_A), SEINTARM_V(q->intr_params) | INGRESSQID_V(q->cntxt_id)); } /* * Enable NAPI scheduling and interrupt generation for all Rx queues. */ static void enable_rx(struct adapter *adap) { int i; for (i = 0; i < adap->sge.ingr_sz; i++) { struct sge_rspq *q = adap->sge.ingr_map[i]; if (!q) continue; cxgb4_enable_rx(adap, q); } } static int setup_non_data_intr(struct adapter *adap) { int msix; adap->sge.nd_msix_idx = -1; if (!(adap->flags & CXGB4_USING_MSIX)) return 0; /* Request MSI-X vector for non-data interrupt */ msix = cxgb4_get_msix_idx_from_bmap(adap); if (msix < 0) return -ENOMEM; snprintf(adap->msix_info[msix].desc, sizeof(adap->msix_info[msix].desc), "%s", adap->port[0]->name); adap->sge.nd_msix_idx = msix; return 0; } static int setup_fw_sge_queues(struct adapter *adap) { struct sge *s = &adap->sge; int msix, err = 0; bitmap_zero(s->starving_fl, s->egr_sz); bitmap_zero(s->txq_maperr, s->egr_sz); if (adap->flags & CXGB4_USING_MSIX) { s->fwevtq_msix_idx = -1; msix = cxgb4_get_msix_idx_from_bmap(adap); if (msix < 0) return -ENOMEM; snprintf(adap->msix_info[msix].desc, sizeof(adap->msix_info[msix].desc), "%s-FWeventq", adap->port[0]->name); } else { err = t4_sge_alloc_rxq(adap, &s->intrq, false, adap->port[0], 0, NULL, NULL, NULL, -1); if (err) return err; msix = -((int)s->intrq.abs_id + 1); } err = t4_sge_alloc_rxq(adap, &s->fw_evtq, true, adap->port[0], msix, NULL, fwevtq_handler, NULL, -1); if (err && msix >= 0) cxgb4_free_msix_idx_in_bmap(adap, msix); s->fwevtq_msix_idx = msix; return err; } /** * setup_sge_queues - configure SGE Tx/Rx/response queues * @adap: the adapter * * Determines how many sets of SGE queues to use and initializes them. * We support multiple queue sets per port if we have MSI-X, otherwise * just one queue set per port. */ static int setup_sge_queues(struct adapter *adap) { struct sge_uld_rxq_info *rxq_info = NULL; struct sge *s = &adap->sge; unsigned int cmplqid = 0; int err, i, j, msix = 0; if (is_uld(adap)) rxq_info = s->uld_rxq_info[CXGB4_ULD_RDMA]; if (!(adap->flags & CXGB4_USING_MSIX)) msix = -((int)s->intrq.abs_id + 1); for_each_port(adap, i) { struct net_device *dev = adap->port[i]; struct port_info *pi = netdev_priv(dev); struct sge_eth_rxq *q = &s->ethrxq[pi->first_qset]; struct sge_eth_txq *t = &s->ethtxq[pi->first_qset]; for (j = 0; j < pi->nqsets; j++, q++) { if (msix >= 0) { msix = cxgb4_get_msix_idx_from_bmap(adap); if (msix < 0) { err = msix; goto freeout; } snprintf(adap->msix_info[msix].desc, sizeof(adap->msix_info[msix].desc), "%s-Rx%d", dev->name, j); q->msix = &adap->msix_info[msix]; } err = t4_sge_alloc_rxq(adap, &q->rspq, false, dev, msix, &q->fl, t4_ethrx_handler, NULL, t4_get_tp_ch_map(adap, pi->tx_chan)); if (err) goto freeout; q->rspq.idx = j; memset(&q->stats, 0, sizeof(q->stats)); } q = &s->ethrxq[pi->first_qset]; for (j = 0; j < pi->nqsets; j++, t++, q++) { err = t4_sge_alloc_eth_txq(adap, t, dev, netdev_get_tx_queue(dev, j), q->rspq.cntxt_id, !!(adap->flags & CXGB4_SGE_DBQ_TIMER)); if (err) goto freeout; } } for_each_port(adap, i) { /* Note that cmplqid below is 0 if we don't * have RDMA queues, and that's the right value. */ if (rxq_info) cmplqid = rxq_info->uldrxq[i].rspq.cntxt_id; err = t4_sge_alloc_ctrl_txq(adap, &s->ctrlq[i], adap->port[i], s->fw_evtq.cntxt_id, cmplqid); if (err) goto freeout; } if (!is_t4(adap->params.chip)) { err = t4_sge_alloc_eth_txq(adap, &s->ptptxq, adap->port[0], netdev_get_tx_queue(adap->port[0], 0) , s->fw_evtq.cntxt_id, false); if (err) goto freeout; } t4_write_reg(adap, is_t4(adap->params.chip) ? MPS_TRC_RSS_CONTROL_A : MPS_T5_TRC_RSS_CONTROL_A, RSSCONTROL_V(netdev2pinfo(adap->port[0])->tx_chan) | QUEUENUMBER_V(s->ethrxq[0].rspq.abs_id)); return 0; freeout: dev_err(adap->pdev_dev, "Can't allocate queues, err=%d\n", -err); t4_free_sge_resources(adap); return err; } static u16 cxgb_select_queue(struct net_device *dev, struct sk_buff *skb, struct net_device *sb_dev) { int txq; #ifdef CONFIG_CHELSIO_T4_DCB /* If a Data Center Bridging has been successfully negotiated on this * link then we'll use the skb's priority to map it to a TX Queue. * The skb's priority is determined via the VLAN Tag Priority Code * Point field. */ if (cxgb4_dcb_enabled(dev) && !is_kdump_kernel()) { u16 vlan_tci; int err; err = vlan_get_tag(skb, &vlan_tci); if (unlikely(err)) { if (net_ratelimit()) netdev_warn(dev, "TX Packet without VLAN Tag on DCB Link\n"); txq = 0; } else { txq = (vlan_tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; #ifdef CONFIG_CHELSIO_T4_FCOE if (skb->protocol == htons(ETH_P_FCOE)) txq = skb->priority & 0x7; #endif /* CONFIG_CHELSIO_T4_FCOE */ } return txq; } #endif /* CONFIG_CHELSIO_T4_DCB */ if (dev->num_tc) { struct port_info *pi = netdev2pinfo(dev); u8 ver, proto; ver = ip_hdr(skb)->version; proto = (ver == 6) ? ipv6_hdr(skb)->nexthdr : ip_hdr(skb)->protocol; /* Send unsupported traffic pattern to normal NIC queues. */ txq = netdev_pick_tx(dev, skb, sb_dev); if (xfrm_offload(skb) || is_ptp_enabled(skb, dev) || skb->encapsulation || (proto != IPPROTO_TCP && proto != IPPROTO_UDP)) txq = txq % pi->nqsets; return txq; } if (select_queue) { txq = (skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : smp_processor_id()); while (unlikely(txq >= dev->real_num_tx_queues)) txq -= dev->real_num_tx_queues; return txq; } return netdev_pick_tx(dev, skb, NULL) % dev->real_num_tx_queues; } static int closest_timer(const struct sge *s, int time) { int i, delta, match = 0, min_delta = INT_MAX; for (i = 0; i < ARRAY_SIZE(s->timer_val); i++) { delta = time - s->timer_val[i]; if (delta < 0) delta = -delta; if (delta < min_delta) { min_delta = delta; match = i; } } return match; } static int closest_thres(const struct sge *s, int thres) { int i, delta, match = 0, min_delta = INT_MAX; for (i = 0; i < ARRAY_SIZE(s->counter_val); i++) { delta = thres - s->counter_val[i]; if (delta < 0) delta = -delta; if (delta < min_delta) { min_delta = delta; match = i; } } return match; } /** * cxgb4_set_rspq_intr_params - set a queue's interrupt holdoff parameters * @q: the Rx queue * @us: the hold-off time in us, or 0 to disable timer * @cnt: the hold-off packet count, or 0 to disable counter * * Sets an Rx queue's interrupt hold-off time and packet count. At least * one of the two needs to be enabled for the queue to generate interrupts. */ int cxgb4_set_rspq_intr_params(struct sge_rspq *q, unsigned int us, unsigned int cnt) { struct adapter *adap = q->adap; if ((us | cnt) == 0) cnt = 1; if (cnt) { int err; u32 v, new_idx; new_idx = closest_thres(&adap->sge, cnt); if (q->desc && q->pktcnt_idx != new_idx) { /* the queue has already been created, update it */ v = FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DMAQ) | FW_PARAMS_PARAM_X_V( FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH) | FW_PARAMS_PARAM_YZ_V(q->cntxt_id); err = t4_set_params(adap, adap->mbox, adap->pf, 0, 1, &v, &new_idx); if (err) return err; } q->pktcnt_idx = new_idx; } us = us == 0 ? 6 : closest_timer(&adap->sge, us); q->intr_params = QINTR_TIMER_IDX_V(us) | QINTR_CNT_EN_V(cnt > 0); return 0; } static int cxgb_set_features(struct net_device *dev, netdev_features_t features) { const struct port_info *pi = netdev_priv(dev); netdev_features_t changed = dev->features ^ features; int err; if (!(changed & NETIF_F_HW_VLAN_CTAG_RX)) return 0; err = t4_set_rxmode(pi->adapter, pi->adapter->pf, pi->viid, -1, -1, -1, -1, !!(features & NETIF_F_HW_VLAN_CTAG_RX), true); if (unlikely(err)) dev->features = features ^ NETIF_F_HW_VLAN_CTAG_RX; return err; } static int setup_debugfs(struct adapter *adap) { if (IS_ERR_OR_NULL(adap->debugfs_root)) return -1; #ifdef CONFIG_DEBUG_FS t4_setup_debugfs(adap); #endif return 0; } /* * upper-layer driver support */ /* * Allocate an active-open TID and set it to the supplied value. */ int cxgb4_alloc_atid(struct tid_info *t, void *data) { int atid = -1; spin_lock_bh(&t->atid_lock); if (t->afree) { union aopen_entry *p = t->afree; atid = (p - t->atid_tab) + t->atid_base; t->afree = p->next; p->data = data; t->atids_in_use++; } spin_unlock_bh(&t->atid_lock); return atid; } EXPORT_SYMBOL(cxgb4_alloc_atid); /* * Release an active-open TID. */ void cxgb4_free_atid(struct tid_info *t, unsigned int atid) { union aopen_entry *p = &t->atid_tab[atid - t->atid_base]; spin_lock_bh(&t->atid_lock); p->next = t->afree; t->afree = p; t->atids_in_use--; spin_unlock_bh(&t->atid_lock); } EXPORT_SYMBOL(cxgb4_free_atid); /* * Allocate a server TID and set it to the supplied value. */ int cxgb4_alloc_stid(struct tid_info *t, int family, void *data) { int stid; spin_lock_bh(&t->stid_lock); if (family == PF_INET) { stid = find_first_zero_bit(t->stid_bmap, t->nstids); if (stid < t->nstids) __set_bit(stid, t->stid_bmap); else stid = -1; } else { stid = bitmap_find_free_region(t->stid_bmap, t->nstids, 1); if (stid < 0) stid = -1; } if (stid >= 0) { t->stid_tab[stid].data = data; stid += t->stid_base; /* IPv6 requires max of 520 bits or 16 cells in TCAM * This is equivalent to 4 TIDs. With CLIP enabled it * needs 2 TIDs. */ if (family == PF_INET6) { t->stids_in_use += 2; t->v6_stids_in_use += 2; } else { t->stids_in_use++; } } spin_unlock_bh(&t->stid_lock); return stid; } EXPORT_SYMBOL(cxgb4_alloc_stid); /* Allocate a server filter TID and set it to the supplied value. */ int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data) { int stid; spin_lock_bh(&t->stid_lock); if (family == PF_INET) { stid = find_next_zero_bit(t->stid_bmap, t->nstids + t->nsftids, t->nstids); if (stid < (t->nstids + t->nsftids)) __set_bit(stid, t->stid_bmap); else stid = -1; } else { stid = -1; } if (stid >= 0) { t->stid_tab[stid].data = data; stid -= t->nstids; stid += t->sftid_base; t->sftids_in_use++; } spin_unlock_bh(&t->stid_lock); return stid; } EXPORT_SYMBOL(cxgb4_alloc_sftid); /* Release a server TID. */ void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family) { /* Is it a server filter TID? */ if (t->nsftids && (stid >= t->sftid_base)) { stid -= t->sftid_base; stid += t->nstids; } else { stid -= t->stid_base; } spin_lock_bh(&t->stid_lock); if (family == PF_INET) __clear_bit(stid, t->stid_bmap); else bitmap_release_region(t->stid_bmap, stid, 1); t->stid_tab[stid].data = NULL; if (stid < t->nstids) { if (family == PF_INET6) { t->stids_in_use -= 2; t->v6_stids_in_use -= 2; } else { t->stids_in_use--; } } else { t->sftids_in_use--; } spin_unlock_bh(&t->stid_lock); } EXPORT_SYMBOL(cxgb4_free_stid); /* * Populate a TID_RELEASE WR. Caller must properly size the skb. */ static void mk_tid_release(struct sk_buff *skb, unsigned int chan, unsigned int tid) { struct cpl_tid_release *req; set_wr_txq(skb, CPL_PRIORITY_SETUP, chan); req = __skb_put(skb, sizeof(*req)); INIT_TP_WR(req, tid); OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, tid)); } /* * Queue a TID release request and if necessary schedule a work queue to * process it. */ static void cxgb4_queue_tid_release(struct tid_info *t, unsigned int chan, unsigned int tid) { struct adapter *adap = container_of(t, struct adapter, tids); void **p = &t->tid_tab[tid - t->tid_base]; spin_lock_bh(&adap->tid_release_lock); *p = adap->tid_release_head; /* Low 2 bits encode the Tx channel number */ adap->tid_release_head = (void **)((uintptr_t)p | chan); if (!adap->tid_release_task_busy) { adap->tid_release_task_busy = true; queue_work(adap->workq, &adap->tid_release_task); } spin_unlock_bh(&adap->tid_release_lock); } /* * Process the list of pending TID release requests. */ static void process_tid_release_list(struct work_struct *work) { struct sk_buff *skb; struct adapter *adap; adap = container_of(work, struct adapter, tid_release_task); spin_lock_bh(&adap->tid_release_lock); while (adap->tid_release_head) { void **p = adap->tid_release_head; unsigned int chan = (uintptr_t)p & 3; p = (void *)p - chan; adap->tid_release_head = *p; *p = NULL; spin_unlock_bh(&adap->tid_release_lock); while (!(skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_KERNEL))) schedule_timeout_uninterruptible(1); mk_tid_release(skb, chan, p - adap->tids.tid_tab); t4_ofld_send(adap, skb); spin_lock_bh(&adap->tid_release_lock); } adap->tid_release_task_busy = false; spin_unlock_bh(&adap->tid_release_lock); } /* * Release a TID and inform HW. If we are unable to allocate the release * message we defer to a work queue. */ void cxgb4_remove_tid(struct tid_info *t, unsigned int chan, unsigned int tid, unsigned short family) { struct adapter *adap = container_of(t, struct adapter, tids); struct sk_buff *skb; WARN_ON(tid_out_of_range(&adap->tids, tid)); if (t->tid_tab[tid - adap->tids.tid_base]) { t->tid_tab[tid - adap->tids.tid_base] = NULL; atomic_dec(&t->conns_in_use); if (t->hash_base && (tid >= t->hash_base)) { if (family == AF_INET6) atomic_sub(2, &t->hash_tids_in_use); else atomic_dec(&t->hash_tids_in_use); } else { if (family == AF_INET6) atomic_sub(2, &t->tids_in_use); else atomic_dec(&t->tids_in_use); } } skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC); if (likely(skb)) { mk_tid_release(skb, chan, tid); t4_ofld_send(adap, skb); } else cxgb4_queue_tid_release(t, chan, tid); } EXPORT_SYMBOL(cxgb4_remove_tid); /* * Allocate and initialize the TID tables. Returns 0 on success. */ static int tid_init(struct tid_info *t) { struct adapter *adap = container_of(t, struct adapter, tids); unsigned int max_ftids = t->nftids + t->nsftids; unsigned int natids = t->natids; unsigned int hpftid_bmap_size; unsigned int eotid_bmap_size; unsigned int stid_bmap_size; unsigned int ftid_bmap_size; size_t size; stid_bmap_size = BITS_TO_LONGS(t->nstids + t->nsftids); ftid_bmap_size = BITS_TO_LONGS(t->nftids); hpftid_bmap_size = BITS_TO_LONGS(t->nhpftids); eotid_bmap_size = BITS_TO_LONGS(t->neotids); size = t->ntids * sizeof(*t->tid_tab) + natids * sizeof(*t->atid_tab) + t->nstids * sizeof(*t->stid_tab) + t->nsftids * sizeof(*t->stid_tab) + stid_bmap_size * sizeof(long) + t->nhpftids * sizeof(*t->hpftid_tab) + hpftid_bmap_size * sizeof(long) + max_ftids * sizeof(*t->ftid_tab) + ftid_bmap_size * sizeof(long) + t->neotids * sizeof(*t->eotid_tab) + eotid_bmap_size * sizeof(long); t->tid_tab = kvzalloc(size, GFP_KERNEL); if (!t->tid_tab) return -ENOMEM; t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids]; t->stid_tab = (struct serv_entry *)&t->atid_tab[natids]; t->stid_bmap = (unsigned long *)&t->stid_tab[t->nstids + t->nsftids]; t->hpftid_tab = (struct filter_entry *)&t->stid_bmap[stid_bmap_size]; t->hpftid_bmap = (unsigned long *)&t->hpftid_tab[t->nhpftids]; t->ftid_tab = (struct filter_entry *)&t->hpftid_bmap[hpftid_bmap_size]; t->ftid_bmap = (unsigned long *)&t->ftid_tab[max_ftids]; t->eotid_tab = (struct eotid_entry *)&t->ftid_bmap[ftid_bmap_size]; t->eotid_bmap = (unsigned long *)&t->eotid_tab[t->neotids]; spin_lock_init(&t->stid_lock); spin_lock_init(&t->atid_lock); spin_lock_init(&t->ftid_lock); t->stids_in_use = 0; t->v6_stids_in_use = 0; t->sftids_in_use = 0; t->afree = NULL; t->atids_in_use = 0; atomic_set(&t->tids_in_use, 0); atomic_set(&t->conns_in_use, 0); atomic_set(&t->hash_tids_in_use, 0); /* Setup the free list for atid_tab and clear the stid bitmap. */ if (natids) { while (--natids) t->atid_tab[natids - 1].next = &t->atid_tab[natids]; t->afree = t->atid_tab; } if (is_offload(adap)) { bitmap_zero(t->stid_bmap, t->nstids + t->nsftids); /* Reserve stid 0 for T4/T5 adapters */ if (!t->stid_base && CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5) __set_bit(0, t->stid_bmap); if (t->neotids) bitmap_zero(t->eotid_bmap, t->neotids); } if (t->nhpftids) bitmap_zero(t->hpftid_bmap, t->nhpftids); bitmap_zero(t->ftid_bmap, t->nftids); return 0; } /** * cxgb4_create_server - create an IP server * @dev: the device * @stid: the server TID * @sip: local IP address to bind server to * @sport: the server's TCP port * @queue: queue to direct messages from this server to * * Create an IP server for the given port and address. * Returns <0 on error and one of the %NET_XMIT_* values on success. */ int cxgb4_create_server(const struct net_device *dev, unsigned int stid, __be32 sip, __be16 sport, __be16 vlan, unsigned int queue) { unsigned int chan; struct sk_buff *skb; struct adapter *adap; struct cpl_pass_open_req *req; int ret; skb = alloc_skb(sizeof(*req), GFP_KERNEL); if (!skb) return -ENOMEM; adap = netdev2adap(dev); req = __skb_put(skb, sizeof(*req)); INIT_TP_WR(req, 0); OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, stid)); req->local_port = sport; req->peer_port = htons(0); req->local_ip = sip; req->peer_ip = htonl(0); chan = rxq_to_chan(&adap->sge, queue); req->opt0 = cpu_to_be64(TX_CHAN_V(chan)); req->opt1 = cpu_to_be64(CONN_POLICY_V(CPL_CONN_POLICY_ASK) | SYN_RSS_ENABLE_F | SYN_RSS_QUEUE_V(queue)); ret = t4_mgmt_tx(adap, skb); return net_xmit_eval(ret); } EXPORT_SYMBOL(cxgb4_create_server); /* cxgb4_create_server6 - create an IPv6 server * @dev: the device * @stid: the server TID * @sip: local IPv6 address to bind server to * @sport: the server's TCP port * @queue: queue to direct messages from this server to * * Create an IPv6 server for the given port and address. * Returns <0 on error and one of the %NET_XMIT_* values on success. */ int cxgb4_create_server6(const struct net_device *dev, unsigned int stid, const struct in6_addr *sip, __be16 sport, unsigned int queue) { unsigned int chan; struct sk_buff *skb; struct adapter *adap; struct cpl_pass_open_req6 *req; int ret; skb = alloc_skb(sizeof(*req), GFP_KERNEL); if (!skb) return -ENOMEM; adap = netdev2adap(dev); req = __skb_put(skb, sizeof(*req)); INIT_TP_WR(req, 0); OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ6, stid)); req->local_port = sport; req->peer_port = htons(0); req->local_ip_hi = *(__be64 *)(sip->s6_addr); req->local_ip_lo = *(__be64 *)(sip->s6_addr + 8); req->peer_ip_hi = cpu_to_be64(0); req->peer_ip_lo = cpu_to_be64(0); chan = rxq_to_chan(&adap->sge, queue); req->opt0 = cpu_to_be64(TX_CHAN_V(chan)); req->opt1 = cpu_to_be64(CONN_POLICY_V(CPL_CONN_POLICY_ASK) | SYN_RSS_ENABLE_F | SYN_RSS_QUEUE_V(queue)); ret = t4_mgmt_tx(adap, skb); return net_xmit_eval(ret); } EXPORT_SYMBOL(cxgb4_create_server6); int cxgb4_remove_server(const struct net_device *dev, unsigned int stid, unsigned int queue, bool ipv6) { struct sk_buff *skb; struct adapter *adap; struct cpl_close_listsvr_req *req; int ret; adap = netdev2adap(dev); skb = alloc_skb(sizeof(*req), GFP_KERNEL); if (!skb) return -ENOMEM; req = __skb_put(skb, sizeof(*req)); INIT_TP_WR(req, 0); OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, stid)); req->reply_ctrl = htons(NO_REPLY_V(0) | (ipv6 ? LISTSVR_IPV6_V(1) : LISTSVR_IPV6_V(0)) | QUEUENO_V(queue)); ret = t4_mgmt_tx(adap, skb); return net_xmit_eval(ret); } EXPORT_SYMBOL(cxgb4_remove_server); /** * cxgb4_best_mtu - find the entry in the MTU table closest to an MTU * @mtus: the HW MTU table * @mtu: the target MTU * @idx: index of selected entry in the MTU table * * Returns the index and the value in the HW MTU table that is closest to * but does not exceed @mtu, unless @mtu is smaller than any value in the * table, in which case that smallest available value is selected. */ unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu, unsigned int *idx) { unsigned int i = 0; while (i < NMTUS - 1 && mtus[i + 1] <= mtu) ++i; if (idx) *idx = i; return mtus[i]; } EXPORT_SYMBOL(cxgb4_best_mtu); /** * cxgb4_best_aligned_mtu - find best MTU, [hopefully] data size aligned * @mtus: the HW MTU table * @header_size: Header Size * @data_size_max: maximum Data Segment Size * @data_size_align: desired Data Segment Size Alignment (2^N) * @mtu_idxp: HW MTU Table Index return value pointer (possibly NULL) * * Similar to cxgb4_best_mtu() but instead of searching the Hardware * MTU Table based solely on a Maximum MTU parameter, we break that * parameter up into a Header Size and Maximum Data Segment Size, and * provide a desired Data Segment Size Alignment. If we find an MTU in * the Hardware MTU Table which will result in a Data Segment Size with * the requested alignment _and_ that MTU isn't "too far" from the * closest MTU, then we'll return that rather than the closest MTU. */ unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus, unsigned short header_size, unsigned short data_size_max, unsigned short data_size_align, unsigned int *mtu_idxp) { unsigned short max_mtu = header_size + data_size_max; unsigned short data_size_align_mask = data_size_align - 1; int mtu_idx, aligned_mtu_idx; /* Scan the MTU Table till we find an MTU which is larger than our * Maximum MTU or we reach the end of the table. Along the way, * record the last MTU found, if any, which will result in a Data * Segment Length matching the requested alignment. */ for (mtu_idx = 0, aligned_mtu_idx = -1; mtu_idx < NMTUS; mtu_idx++) { unsigned short data_size = mtus[mtu_idx] - header_size; /* If this MTU minus the Header Size would result in a * Data Segment Size of the desired alignment, remember it. */ if ((data_size & data_size_align_mask) == 0) aligned_mtu_idx = mtu_idx; /* If we're not at the end of the Hardware MTU Table and the * next element is larger than our Maximum MTU, drop out of * the loop. */ if (mtu_idx+1 < NMTUS && mtus[mtu_idx+1] > max_mtu) break; } /* If we fell out of the loop because we ran to the end of the table, * then we just have to use the last [largest] entry. */ if (mtu_idx == NMTUS) mtu_idx--; /* If we found an MTU which resulted in the requested Data Segment * Length alignment and that's "not far" from the largest MTU which is * less than or equal to the maximum MTU, then use that. */ if (aligned_mtu_idx >= 0 && mtu_idx - aligned_mtu_idx <= 1) mtu_idx = aligned_mtu_idx; /* If the caller has passed in an MTU Index pointer, pass the * MTU Index back. Return the MTU value. */ if (mtu_idxp) *mtu_idxp = mtu_idx; return mtus[mtu_idx]; } EXPORT_SYMBOL(cxgb4_best_aligned_mtu); /** * cxgb4_port_chan - get the HW channel of a port * @dev: the net device for the port * * Return the HW Tx channel of the given port. */ unsigned int cxgb4_port_chan(const struct net_device *dev) { return netdev2pinfo(dev)->tx_chan; } EXPORT_SYMBOL(cxgb4_port_chan); /** * cxgb4_port_e2cchan - get the HW c-channel of a port * @dev: the net device for the port * * Return the HW RX c-channel of the given port. */ unsigned int cxgb4_port_e2cchan(const struct net_device *dev) { return netdev2pinfo(dev)->rx_cchan; } EXPORT_SYMBOL(cxgb4_port_e2cchan); unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo) { struct adapter *adap = netdev2adap(dev); u32 v1, v2, lp_count, hp_count; v1 = t4_read_reg(adap, SGE_DBFIFO_STATUS_A); v2 = t4_read_reg(adap, SGE_DBFIFO_STATUS2_A); if (is_t4(adap->params.chip)) { lp_count = LP_COUNT_G(v1); hp_count = HP_COUNT_G(v1); } else { lp_count = LP_COUNT_T5_G(v1); hp_count = HP_COUNT_T5_G(v2); } return lpfifo ? lp_count : hp_count; } EXPORT_SYMBOL(cxgb4_dbfifo_count); /** * cxgb4_port_viid - get the VI id of a port * @dev: the net device for the port * * Return the VI id of the given port. */ unsigned int cxgb4_port_viid(const struct net_device *dev) { return netdev2pinfo(dev)->viid; } EXPORT_SYMBOL(cxgb4_port_viid); /** * cxgb4_port_idx - get the index of a port * @dev: the net device for the port * * Return the index of the given port. */ unsigned int cxgb4_port_idx(const struct net_device *dev) { return netdev2pinfo(dev)->port_id; } EXPORT_SYMBOL(cxgb4_port_idx); void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4, struct tp_tcp_stats *v6) { struct adapter *adap = pci_get_drvdata(pdev); spin_lock(&adap->stats_lock); t4_tp_get_tcp_stats(adap, v4, v6, false); spin_unlock(&adap->stats_lock); } EXPORT_SYMBOL(cxgb4_get_tcp_stats); void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask, const unsigned int *pgsz_order) { struct adapter *adap = netdev2adap(dev); t4_write_reg(adap, ULP_RX_ISCSI_TAGMASK_A, tag_mask); t4_write_reg(adap, ULP_RX_ISCSI_PSZ_A, HPZ0_V(pgsz_order[0]) | HPZ1_V(pgsz_order[1]) | HPZ2_V(pgsz_order[2]) | HPZ3_V(pgsz_order[3])); } EXPORT_SYMBOL(cxgb4_iscsi_init); int cxgb4_flush_eq_cache(struct net_device *dev) { struct adapter *adap = netdev2adap(dev); return t4_sge_ctxt_flush(adap, adap->mbox, CTXT_EGRESS); } EXPORT_SYMBOL(cxgb4_flush_eq_cache); static int read_eq_indices(struct adapter *adap, u16 qid, u16 *pidx, u16 *cidx) { u32 addr = t4_read_reg(adap, SGE_DBQ_CTXT_BADDR_A) + 24 * qid + 8; __be64 indices; int ret; spin_lock(&adap->win0_lock); ret = t4_memory_rw(adap, 0, MEM_EDC0, addr, sizeof(indices), (__be32 *)&indices, T4_MEMORY_READ); spin_unlock(&adap->win0_lock); if (!ret) { *cidx = (be64_to_cpu(indices) >> 25) & 0xffff; *pidx = (be64_to_cpu(indices) >> 9) & 0xffff; } return ret; } int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx, u16 size) { struct adapter *adap = netdev2adap(dev); u16 hw_pidx, hw_cidx; int ret; ret = read_eq_indices(adap, qid, &hw_pidx, &hw_cidx); if (ret) goto out; if (pidx != hw_pidx) { u16 delta; u32 val; if (pidx >= hw_pidx) delta = pidx - hw_pidx; else delta = size - hw_pidx + pidx; if (is_t4(adap->params.chip)) val = PIDX_V(delta); else val = PIDX_T5_V(delta); wmb(); t4_write_reg(adap, MYPF_REG(SGE_PF_KDOORBELL_A), QID_V(qid) | val); } out: return ret; } EXPORT_SYMBOL(cxgb4_sync_txq_pidx); int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte) { u32 edc0_size, edc1_size, mc0_size, mc1_size, size; u32 edc0_end, edc1_end, mc0_end, mc1_end; u32 offset, memtype, memaddr; struct adapter *adap; u32 hma_size = 0; int ret; adap = netdev2adap(dev); offset = ((stag >> 8) * 32) + adap->vres.stag.start; /* Figure out where the offset lands in the Memory Type/Address scheme. * This code assumes that the memory is laid out starting at offset 0 * with no breaks as: EDC0, EDC1, MC0, MC1. All cards have both EDC0 * and EDC1. Some cards will have neither MC0 nor MC1, most cards have * MC0, and some have both MC0 and MC1. */ size = t4_read_reg(adap, MA_EDRAM0_BAR_A); edc0_size = EDRAM0_SIZE_G(size) << 20; size = t4_read_reg(adap, MA_EDRAM1_BAR_A); edc1_size = EDRAM1_SIZE_G(size) << 20; size = t4_read_reg(adap, MA_EXT_MEMORY0_BAR_A); mc0_size = EXT_MEM0_SIZE_G(size) << 20; if (t4_read_reg(adap, MA_TARGET_MEM_ENABLE_A) & HMA_MUX_F) { size = t4_read_reg(adap, MA_EXT_MEMORY1_BAR_A); hma_size = EXT_MEM1_SIZE_G(size) << 20; } edc0_end = edc0_size; edc1_end = edc0_end + edc1_size; mc0_end = edc1_end + mc0_size; if (offset < edc0_end) { memtype = MEM_EDC0; memaddr = offset; } else if (offset < edc1_end) { memtype = MEM_EDC1; memaddr = offset - edc0_end; } else { if (hma_size && (offset < (edc1_end + hma_size))) { memtype = MEM_HMA; memaddr = offset - edc1_end; } else if (offset < mc0_end) { memtype = MEM_MC0; memaddr = offset - edc1_end; } else if (is_t5(adap->params.chip)) { size = t4_read_reg(adap, MA_EXT_MEMORY1_BAR_A); mc1_size = EXT_MEM1_SIZE_G(size) << 20; mc1_end = mc0_end + mc1_size; if (offset < mc1_end) { memtype = MEM_MC1; memaddr = offset - mc0_end; } else { /* offset beyond the end of any memory */ goto err; } } else { /* T4/T6 only has a single memory channel */ goto err; } } spin_lock(&adap->win0_lock); ret = t4_memory_rw(adap, 0, memtype, memaddr, 32, tpte, T4_MEMORY_READ); spin_unlock(&adap->win0_lock); return ret; err: dev_err(adap->pdev_dev, "stag %#x, offset %#x out of range\n", stag, offset); return -EINVAL; } EXPORT_SYMBOL(cxgb4_read_tpte); u64 cxgb4_read_sge_timestamp(struct net_device *dev) { u32 hi, lo; struct adapter *adap; adap = netdev2adap(dev); lo = t4_read_reg(adap, SGE_TIMESTAMP_LO_A); hi = TSVAL_G(t4_read_reg(adap, SGE_TIMESTAMP_HI_A)); return ((u64)hi << 32) | (u64)lo; } EXPORT_SYMBOL(cxgb4_read_sge_timestamp); int cxgb4_bar2_sge_qregs(struct net_device *dev, unsigned int qid, enum cxgb4_bar2_qtype qtype, int user, u64 *pbar2_qoffset, unsigned int *pbar2_qid) { return t4_bar2_sge_qregs(netdev2adap(dev), qid, (qtype == CXGB4_BAR2_QTYPE_EGRESS ? T4_BAR2_QTYPE_EGRESS : T4_BAR2_QTYPE_INGRESS), user, pbar2_qoffset, pbar2_qid); } EXPORT_SYMBOL(cxgb4_bar2_sge_qregs); static struct pci_driver cxgb4_driver; static void check_neigh_update(struct neighbour *neigh) { const struct device *parent; const struct net_device *netdev = neigh->dev; if (is_vlan_dev(netdev)) netdev = vlan_dev_real_dev(netdev); parent = netdev->dev.parent; if (parent && parent->driver == &cxgb4_driver.driver) t4_l2t_update(dev_get_drvdata(parent), neigh); } static int netevent_cb(struct notifier_block *nb, unsigned long event, void *data) { switch (event) { case NETEVENT_NEIGH_UPDATE: check_neigh_update(data); break; case NETEVENT_REDIRECT: default: break; } return 0; } static bool netevent_registered; static struct notifier_block cxgb4_netevent_nb = { .notifier_call = netevent_cb }; static void drain_db_fifo(struct adapter *adap, int usecs) { u32 v1, v2, lp_count, hp_count; do { v1 = t4_read_reg(adap, SGE_DBFIFO_STATUS_A); v2 = t4_read_reg(adap, SGE_DBFIFO_STATUS2_A); if (is_t4(adap->params.chip)) { lp_count = LP_COUNT_G(v1); hp_count = HP_COUNT_G(v1); } else { lp_count = LP_COUNT_T5_G(v1); hp_count = HP_COUNT_T5_G(v2); } if (lp_count == 0 && hp_count == 0) break; set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(usecs_to_jiffies(usecs)); } while (1); } static void disable_txq_db(struct sge_txq *q) { unsigned long flags; spin_lock_irqsave(&q->db_lock, flags); q->db_disabled = 1; spin_unlock_irqrestore(&q->db_lock, flags); } static void enable_txq_db(struct adapter *adap, struct sge_txq *q) { spin_lock_irq(&q->db_lock); if (q->db_pidx_inc) { /* Make sure that all writes to the TX descriptors * are committed before we tell HW about them. */ wmb(); t4_write_reg(adap, MYPF_REG(SGE_PF_KDOORBELL_A), QID_V(q->cntxt_id) | PIDX_V(q->db_pidx_inc)); q->db_pidx_inc = 0; } q->db_disabled = 0; spin_unlock_irq(&q->db_lock); } static void disable_dbs(struct adapter *adap) { int i; for_each_ethrxq(&adap->sge, i) disable_txq_db(&adap->sge.ethtxq[i].q); if (is_offload(adap)) { struct sge_uld_txq_info *txq_info = adap->sge.uld_txq_info[CXGB4_TX_OFLD]; if (txq_info) { for_each_ofldtxq(&adap->sge, i) { struct sge_uld_txq *txq = &txq_info->uldtxq[i]; disable_txq_db(&txq->q); } } } for_each_port(adap, i) disable_txq_db(&adap->sge.ctrlq[i].q); } static void enable_dbs(struct adapter *adap) { int i; for_each_ethrxq(&adap->sge, i) enable_txq_db(adap, &adap->sge.ethtxq[i].q); if (is_offload(adap)) { struct sge_uld_txq_info *txq_info = adap->sge.uld_txq_info[CXGB4_TX_OFLD]; if (txq_info) { for_each_ofldtxq(&adap->sge, i) { struct sge_uld_txq *txq = &txq_info->uldtxq[i]; enable_txq_db(adap, &txq->q); } } } for_each_port(adap, i) enable_txq_db(adap, &adap->sge.ctrlq[i].q); } static void notify_rdma_uld(struct adapter *adap, enum cxgb4_control cmd) { enum cxgb4_uld type = CXGB4_ULD_RDMA; if (adap->uld && adap->uld[type].handle) adap->uld[type].control(adap->uld[type].handle, cmd); } static void process_db_full(struct work_struct *work) { struct adapter *adap; adap = container_of(work, struct adapter, db_full_task); drain_db_fifo(adap, dbfifo_drain_delay); enable_dbs(adap); notify_rdma_uld(adap, CXGB4_CONTROL_DB_EMPTY); if (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5) t4_set_reg_field(adap, SGE_INT_ENABLE3_A, DBFIFO_HP_INT_F | DBFIFO_LP_INT_F, DBFIFO_HP_INT_F | DBFIFO_LP_INT_F); else t4_set_reg_field(adap, SGE_INT_ENABLE3_A, DBFIFO_LP_INT_F, DBFIFO_LP_INT_F); } static void sync_txq_pidx(struct adapter *adap, struct sge_txq *q) { u16 hw_pidx, hw_cidx; int ret; spin_lock_irq(&q->db_lock); ret = read_eq_indices(adap, (u16)q->cntxt_id, &hw_pidx, &hw_cidx); if (ret) goto out; if (q->db_pidx != hw_pidx) { u16 delta; u32 val; if (q->db_pidx >= hw_pidx) delta = q->db_pidx - hw_pidx; else delta = q->size - hw_pidx + q->db_pidx; if (is_t4(adap->params.chip)) val = PIDX_V(delta); else val = PIDX_T5_V(delta); wmb(); t4_write_reg(adap, MYPF_REG(SGE_PF_KDOORBELL_A), QID_V(q->cntxt_id) | val); } out: q->db_disabled = 0; q->db_pidx_inc = 0; spin_unlock_irq(&q->db_lock); if (ret) CH_WARN(adap, "DB drop recovery failed.\n"); } static void recover_all_queues(struct adapter *adap) { int i; for_each_ethrxq(&adap->sge, i) sync_txq_pidx(adap, &adap->sge.ethtxq[i].q); if (is_offload(adap)) { struct sge_uld_txq_info *txq_info = adap->sge.uld_txq_info[CXGB4_TX_OFLD]; if (txq_info) { for_each_ofldtxq(&adap->sge, i) { struct sge_uld_txq *txq = &txq_info->uldtxq[i]; sync_txq_pidx(adap, &txq->q); } } } for_each_port(adap, i) sync_txq_pidx(adap, &adap->sge.ctrlq[i].q); } static void process_db_drop(struct work_struct *work) { struct adapter *adap; adap = container_of(work, struct adapter, db_drop_task); if (is_t4(adap->params.chip)) { drain_db_fifo(adap, dbfifo_drain_delay); notify_rdma_uld(adap, CXGB4_CONTROL_DB_DROP); drain_db_fifo(adap, dbfifo_drain_delay); recover_all_queues(adap); drain_db_fifo(adap, dbfifo_drain_delay); enable_dbs(adap); notify_rdma_uld(adap, CXGB4_CONTROL_DB_EMPTY); } else if (is_t5(adap->params.chip)) { u32 dropped_db = t4_read_reg(adap, 0x010ac); u16 qid = (dropped_db >> 15) & 0x1ffff; u16 pidx_inc = dropped_db & 0x1fff; u64 bar2_qoffset; unsigned int bar2_qid; int ret; ret = t4_bar2_sge_qregs(adap, qid, T4_BAR2_QTYPE_EGRESS, 0, &bar2_qoffset, &bar2_qid); if (ret) dev_err(adap->pdev_dev, "doorbell drop recovery: " "qid=%d, pidx_inc=%d\n", qid, pidx_inc); else writel(PIDX_T5_V(pidx_inc) | QID_V(bar2_qid), adap->bar2 + bar2_qoffset + SGE_UDB_KDOORBELL); /* Re-enable BAR2 WC */ t4_set_reg_field(adap, 0x10b0, 1<<15, 1<<15); } if (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5) t4_set_reg_field(adap, SGE_DOORBELL_CONTROL_A, DROPPED_DB_F, 0); } void t4_db_full(struct adapter *adap) { if (is_t4(adap->params.chip)) { disable_dbs(adap); notify_rdma_uld(adap, CXGB4_CONTROL_DB_FULL); t4_set_reg_field(adap, SGE_INT_ENABLE3_A, DBFIFO_HP_INT_F | DBFIFO_LP_INT_F, 0); queue_work(adap->workq, &adap->db_full_task); } } void t4_db_dropped(struct adapter *adap) { if (is_t4(adap->params.chip)) { disable_dbs(adap); notify_rdma_uld(adap, CXGB4_CONTROL_DB_FULL); } queue_work(adap->workq, &adap->db_drop_task); } void t4_register_netevent_notifier(void) { if (!netevent_registered) { register_netevent_notifier(&cxgb4_netevent_nb); netevent_registered = true; } } static void detach_ulds(struct adapter *adap) { unsigned int i; mutex_lock(&uld_mutex); list_del(&adap->list_node); for (i = 0; i < CXGB4_ULD_MAX; i++) if (adap->uld && adap->uld[i].handle) adap->uld[i].state_change(adap->uld[i].handle, CXGB4_STATE_DETACH); if (netevent_registered && list_empty(&adapter_list)) { unregister_netevent_notifier(&cxgb4_netevent_nb); netevent_registered = false; } mutex_unlock(&uld_mutex); } static void notify_ulds(struct adapter *adap, enum cxgb4_state new_state) { unsigned int i; mutex_lock(&uld_mutex); for (i = 0; i < CXGB4_ULD_MAX; i++) if (adap->uld && adap->uld[i].handle) adap->uld[i].state_change(adap->uld[i].handle, new_state); mutex_unlock(&uld_mutex); } #if IS_ENABLED(CONFIG_IPV6) static int cxgb4_inet6addr_handler(struct notifier_block *this, unsigned long event, void *data) { struct inet6_ifaddr *ifa = data; struct net_device *event_dev = ifa->idev->dev; const struct device *parent = NULL; #if IS_ENABLED(CONFIG_BONDING) struct adapter *adap; #endif if (is_vlan_dev(event_dev)) event_dev = vlan_dev_real_dev(event_dev); #if IS_ENABLED(CONFIG_BONDING) if (event_dev->flags & IFF_MASTER) { list_for_each_entry(adap, &adapter_list, list_node) { switch (event) { case NETDEV_UP: cxgb4_clip_get(adap->port[0], (const u32 *)ifa, 1); break; case NETDEV_DOWN: cxgb4_clip_release(adap->port[0], (const u32 *)ifa, 1); break; default: break; } } return NOTIFY_OK; } #endif if (event_dev) parent = event_dev->dev.parent; if (parent && parent->driver == &cxgb4_driver.driver) { switch (event) { case NETDEV_UP: cxgb4_clip_get(event_dev, (const u32 *)ifa, 1); break; case NETDEV_DOWN: cxgb4_clip_release(event_dev, (const u32 *)ifa, 1); break; default: break; } } return NOTIFY_OK; } static bool inet6addr_registered; static struct notifier_block cxgb4_inet6addr_notifier = { .notifier_call = cxgb4_inet6addr_handler }; static void update_clip(const struct adapter *adap) { int i; struct net_device *dev; int ret; rcu_read_lock(); for (i = 0; i < MAX_NPORTS; i++) { dev = adap->port[i]; ret = 0; if (dev) ret = cxgb4_update_root_dev_clip(dev); if (ret < 0) break; } rcu_read_unlock(); } #endif /* IS_ENABLED(CONFIG_IPV6) */ /** * cxgb_up - enable the adapter * @adap: adapter being enabled * * Called when the first port is enabled, this function performs the * actions necessary to make an adapter operational, such as completing * the initialization of HW modules, and enabling interrupts. * * Must be called with the rtnl lock held. */ static int cxgb_up(struct adapter *adap) { struct sge *s = &adap->sge; int err; mutex_lock(&uld_mutex); err = setup_sge_queues(adap); if (err) goto rel_lock; err = setup_rss(adap); if (err) goto freeq; if (adap->flags & CXGB4_USING_MSIX) { if (s->nd_msix_idx < 0) { err = -ENOMEM; goto irq_err; } err = request_irq(adap->msix_info[s->nd_msix_idx].vec, t4_nondata_intr, 0, adap->msix_info[s->nd_msix_idx].desc, adap); if (err) goto irq_err; err = request_msix_queue_irqs(adap); if (err) goto irq_err_free_nd_msix; } else { err = request_irq(adap->pdev->irq, t4_intr_handler(adap), (adap->flags & CXGB4_USING_MSI) ? 0 : IRQF_SHARED, adap->port[0]->name, adap); if (err) goto irq_err; } enable_rx(adap); t4_sge_start(adap); t4_intr_enable(adap); adap->flags |= CXGB4_FULL_INIT_DONE; mutex_unlock(&uld_mutex); notify_ulds(adap, CXGB4_STATE_UP); #if IS_ENABLED(CONFIG_IPV6) update_clip(adap); #endif return err; irq_err_free_nd_msix: free_irq(adap->msix_info[s->nd_msix_idx].vec, adap); irq_err: dev_err(adap->pdev_dev, "request_irq failed, err %d\n", err); freeq: t4_free_sge_resources(adap); rel_lock: mutex_unlock(&uld_mutex); return err; } static void cxgb_down(struct adapter *adapter) { cancel_work_sync(&adapter->tid_release_task); cancel_work_sync(&adapter->db_full_task); cancel_work_sync(&adapter->db_drop_task); adapter->tid_release_task_busy = false; adapter->tid_release_head = NULL; t4_sge_stop(adapter); t4_free_sge_resources(adapter); adapter->flags &= ~CXGB4_FULL_INIT_DONE; } /* * net_device operations */ int cxgb_open(struct net_device *dev) { struct port_info *pi = netdev_priv(dev); struct adapter *adapter = pi->adapter; int err; netif_carrier_off(dev); if (!(adapter->flags & CXGB4_FULL_INIT_DONE)) { err = cxgb_up(adapter); if (err < 0) return err; } /* It's possible that the basic port information could have * changed since we first read it. */ err = t4_update_port_info(pi); if (err < 0) return err; err = link_start(dev); if (!err) netif_tx_start_all_queues(dev); return err; } int cxgb_close(struct net_device *dev) { struct port_info *pi = netdev_priv(dev); struct adapter *adapter = pi->adapter; int ret; netif_tx_stop_all_queues(dev); netif_carrier_off(dev); ret = t4_enable_pi_params(adapter, adapter->pf, pi, false, false, false); #ifdef CONFIG_CHELSIO_T4_DCB cxgb4_dcb_reset(dev); dcb_tx_queue_prio_enable(dev, false); #endif return ret; } int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid, __be32 sip, __be16 sport, __be16 vlan, unsigned int queue, unsigned char port, unsigned char mask) { int ret; struct filter_entry *f; struct adapter *adap; int i; u8 *val; adap = netdev2adap(dev); /* Adjust stid to correct filter index */ stid -= adap->tids.sftid_base; stid += adap->tids.nftids; /* Check to make sure the filter requested is writable ... */ f = &adap->tids.ftid_tab[stid]; ret = writable_filter(f); if (ret) return ret; /* Clear out any old resources being used by the filter before * we start constructing the new filter. */ if (f->valid) clear_filter(adap, f); /* Clear out filter specifications */ memset(&f->fs, 0, sizeof(struct ch_filter_specification)); f->fs.val.lport = cpu_to_be16(sport); f->fs.mask.lport = ~0; val = (u8 *)&sip; if ((val[0] | val[1] | val[2] | val[3]) != 0) { for (i = 0; i < 4; i++) { f->fs.val.lip[i] = val[i]; f->fs.mask.lip[i] = ~0; } if (adap->params.tp.vlan_pri_map & PORT_F) { f->fs.val.iport = port; f->fs.mask.iport = mask; } } if (adap->params.tp.vlan_pri_map & PROTOCOL_F) { f->fs.val.proto = IPPROTO_TCP; f->fs.mask.proto = ~0; } f->fs.dirsteer = 1; f->fs.iq = queue; /* Mark filter as locked */ f->locked = 1; f->fs.rpttid = 1; /* Save the actual tid. We need this to get the corresponding * filter entry structure in filter_rpl. */ f->tid = stid + adap->tids.ftid_base; ret = set_filter_wr(adap, stid); if (ret) { clear_filter(adap, f); return ret; } return 0; } EXPORT_SYMBOL(cxgb4_create_server_filter); int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid, unsigned int queue, bool ipv6) { struct filter_entry *f; struct adapter *adap; adap = netdev2adap(dev); /* Adjust stid to correct filter index */ stid -= adap->tids.sftid_base; stid += adap->tids.nftids; f = &adap->tids.ftid_tab[stid]; /* Unlock the filter */ f->locked = 0; return delete_filter(adap, stid); } EXPORT_SYMBOL(cxgb4_remove_server_filter); static void cxgb_get_stats(struct net_device *dev, struct rtnl_link_stats64 *ns) { struct port_stats stats; struct port_info *p = netdev_priv(dev); struct adapter *adapter = p->adapter; /* Block retrieving statistics during EEH error * recovery. Otherwise, the recovery might fail * and the PCI device will be removed permanently */ spin_lock(&adapter->stats_lock); if (!netif_device_present(dev)) { spin_unlock(&adapter->stats_lock); return; } t4_get_port_stats_offset(adapter, p->tx_chan, &stats, &p->stats_base); spin_unlock(&adapter->stats_lock); ns->tx_bytes = stats.tx_octets; ns->tx_packets = stats.tx_frames; ns->rx_bytes = stats.rx_octets; ns->rx_packets = stats.rx_frames; ns->multicast = stats.rx_mcast_frames; /* detailed rx_errors */ ns->rx_length_errors = stats.rx_jabber + stats.rx_too_long + stats.rx_runt; ns->rx_over_errors = 0; ns->rx_crc_errors = stats.rx_fcs_err; ns->rx_frame_errors = stats.rx_symbol_err; ns->rx_dropped = stats.rx_ovflow0 + stats.rx_ovflow1 + stats.rx_ovflow2 + stats.rx_ovflow3 + stats.rx_trunc0 + stats.rx_trunc1 + stats.rx_trunc2 + stats.rx_trunc3; ns->rx_missed_errors = 0; /* detailed tx_errors */ ns->tx_aborted_errors = 0; ns->tx_carrier_errors = 0; ns->tx_fifo_errors = 0; ns->tx_heartbeat_errors = 0; ns->tx_window_errors = 0; ns->tx_errors = stats.tx_error_frames; ns->rx_errors = stats.rx_symbol_err + stats.rx_fcs_err + ns->rx_length_errors + stats.rx_len_err + ns->rx_fifo_errors; } static int cxgb_ioctl(struct net_device *dev, struct ifreq *req, int cmd) { unsigned int mbox; int ret = 0, prtad, devad; struct port_info *pi = netdev_priv(dev); struct adapter *adapter = pi->adapter; struct mii_ioctl_data *data = (struct mii_ioctl_data *)&req->ifr_data; switch (cmd) { case SIOCGMIIPHY: if (pi->mdio_addr < 0) return -EOPNOTSUPP; data->phy_id = pi->mdio_addr; break; case SIOCGMIIREG: case SIOCSMIIREG: if (mdio_phy_id_is_c45(data->phy_id)) { prtad = mdio_phy_id_prtad(data->phy_id); devad = mdio_phy_id_devad(data->phy_id); } else if (data->phy_id < 32) { prtad = data->phy_id; devad = 0; data->reg_num &= 0x1f; } else return -EINVAL; mbox = pi->adapter->pf; if (cmd == SIOCGMIIREG) ret = t4_mdio_rd(pi->adapter, mbox, prtad, devad, data->reg_num, &data->val_out); else ret = t4_mdio_wr(pi->adapter, mbox, prtad, devad, data->reg_num, data->val_in); break; case SIOCGHWTSTAMP: return copy_to_user(req->ifr_data, &pi->tstamp_config, sizeof(pi->tstamp_config)) ? -EFAULT : 0; case SIOCSHWTSTAMP: if (copy_from_user(&pi->tstamp_config, req->ifr_data, sizeof(pi->tstamp_config))) return -EFAULT; if (!is_t4(adapter->params.chip)) { switch (pi->tstamp_config.tx_type) { case HWTSTAMP_TX_OFF: case HWTSTAMP_TX_ON: break; default: return -ERANGE; } switch (pi->tstamp_config.rx_filter) { case HWTSTAMP_FILTER_NONE: pi->rxtstamp = false; break; case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: cxgb4_ptprx_timestamping(pi, pi->port_id, PTP_TS_L4); break; case HWTSTAMP_FILTER_PTP_V2_EVENT: cxgb4_ptprx_timestamping(pi, pi->port_id, PTP_TS_L2_L4); break; case HWTSTAMP_FILTER_ALL: case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: pi->rxtstamp = true; break; default: pi->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; return -ERANGE; } if ((pi->tstamp_config.tx_type == HWTSTAMP_TX_OFF) && (pi->tstamp_config.rx_filter == HWTSTAMP_FILTER_NONE)) { if (cxgb4_ptp_txtype(adapter, pi->port_id) >= 0) pi->ptp_enable = false; } if (pi->tstamp_config.rx_filter != HWTSTAMP_FILTER_NONE) { if (cxgb4_ptp_redirect_rx_packet(adapter, pi) >= 0) pi->ptp_enable = true; } } else { /* For T4 Adapters */ switch (pi->tstamp_config.rx_filter) { case HWTSTAMP_FILTER_NONE: pi->rxtstamp = false; break; case HWTSTAMP_FILTER_ALL: pi->rxtstamp = true; break; default: pi->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; return -ERANGE; } } return copy_to_user(req->ifr_data, &pi->tstamp_config, sizeof(pi->tstamp_config)) ? -EFAULT : 0; default: return -EOPNOTSUPP; } return ret; } static void cxgb_set_rxmode(struct net_device *dev) { /* unfortunately we can't return errors to the stack */ set_rxmode(dev, -1, false); } static int cxgb_change_mtu(struct net_device *dev, int new_mtu) { int ret; struct port_info *pi = netdev_priv(dev); ret = t4_set_rxmode(pi->adapter, pi->adapter->pf, pi->viid, new_mtu, -1, -1, -1, -1, true); if (!ret) dev->mtu = new_mtu; return ret; } #ifdef CONFIG_PCI_IOV static int cxgb4_mgmt_open(struct net_device *dev) { /* Turn carrier off since we don't have to transmit anything on this * interface. */ netif_carrier_off(dev); return 0; } /* Fill MAC address that will be assigned by the FW */ static void cxgb4_mgmt_fill_vf_station_mac_addr(struct adapter *adap) { u8 hw_addr[ETH_ALEN], macaddr[ETH_ALEN]; unsigned int i, vf, nvfs; u16 a, b; int err; u8 *na; adap->params.pci.vpd_cap_addr = pci_find_capability(adap->pdev, PCI_CAP_ID_VPD); err = t4_get_raw_vpd_params(adap, &adap->params.vpd); if (err) return; na = adap->params.vpd.na; for (i = 0; i < ETH_ALEN; i++) hw_addr[i] = (hex2val(na[2 * i + 0]) * 16 + hex2val(na[2 * i + 1])); a = (hw_addr[0] << 8) | hw_addr[1]; b = (hw_addr[1] << 8) | hw_addr[2]; a ^= b; a |= 0x0200; /* locally assigned Ethernet MAC address */ a &= ~0x0100; /* not a multicast Ethernet MAC address */ macaddr[0] = a >> 8; macaddr[1] = a & 0xff; for (i = 2; i < 5; i++) macaddr[i] = hw_addr[i + 1]; for (vf = 0, nvfs = pci_sriov_get_totalvfs(adap->pdev); vf < nvfs; vf++) { macaddr[5] = adap->pf * nvfs + vf; ether_addr_copy(adap->vfinfo[vf].vf_mac_addr, macaddr); } } static int cxgb4_mgmt_set_vf_mac(struct net_device *dev, int vf, u8 *mac) { struct port_info *pi = netdev_priv(dev); struct adapter *adap = pi->adapter; int ret; /* verify MAC addr is valid */ if (!is_valid_ether_addr(mac)) { dev_err(pi->adapter->pdev_dev, "Invalid Ethernet address %pM for VF %d\n", mac, vf); return -EINVAL; } dev_info(pi->adapter->pdev_dev, "Setting MAC %pM on VF %d\n", mac, vf); ret = t4_set_vf_mac_acl(adap, vf + 1, 1, mac); if (!ret) ether_addr_copy(adap->vfinfo[vf].vf_mac_addr, mac); return ret; } static int cxgb4_mgmt_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivi) { struct port_info *pi = netdev_priv(dev); struct adapter *adap = pi->adapter; struct vf_info *vfinfo; if (vf >= adap->num_vfs) return -EINVAL; vfinfo = &adap->vfinfo[vf]; ivi->vf = vf; ivi->max_tx_rate = vfinfo->tx_rate; ivi->min_tx_rate = 0; ether_addr_copy(ivi->mac, vfinfo->vf_mac_addr); ivi->vlan = vfinfo->vlan; ivi->linkstate = vfinfo->link_state; return 0; } static int cxgb4_mgmt_get_phys_port_id(struct net_device *dev, struct netdev_phys_item_id *ppid) { struct port_info *pi = netdev_priv(dev); unsigned int phy_port_id; phy_port_id = pi->adapter->adap_idx * 10 + pi->port_id; ppid->id_len = sizeof(phy_port_id); memcpy(ppid->id, &phy_port_id, ppid->id_len); return 0; } static int cxgb4_mgmt_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, int max_tx_rate) { struct port_info *pi = netdev_priv(dev); struct adapter *adap = pi->adapter; unsigned int link_ok, speed, mtu; u32 fw_pfvf, fw_class; int class_id = vf; int ret; u16 pktsize; if (vf >= adap->num_vfs) return -EINVAL; if (min_tx_rate) { dev_err(adap->pdev_dev, "Min tx rate (%d) (> 0) for VF %d is Invalid.\n", min_tx_rate, vf); return -EINVAL; } if (max_tx_rate == 0) { /* unbind VF to to any Traffic Class */ fw_pfvf = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_SCHEDCLASS_ETH)); fw_class = 0xffffffff; ret = t4_set_params(adap, adap->mbox, adap->pf, vf + 1, 1, &fw_pfvf, &fw_class); if (ret) { dev_err(adap->pdev_dev, "Err %d in unbinding PF %d VF %d from TX Rate Limiting\n", ret, adap->pf, vf); return -EINVAL; } dev_info(adap->pdev_dev, "PF %d VF %d is unbound from TX Rate Limiting\n", adap->pf, vf); adap->vfinfo[vf].tx_rate = 0; return 0; } ret = t4_get_link_params(pi, &link_ok, &speed, &mtu); if (ret != FW_SUCCESS) { dev_err(adap->pdev_dev, "Failed to get link information for VF %d\n", vf); return -EINVAL; } if (!link_ok) { dev_err(adap->pdev_dev, "Link down for VF %d\n", vf); return -EINVAL; } if (max_tx_rate > speed) { dev_err(adap->pdev_dev, "Max tx rate %d for VF %d can't be > link-speed %u", max_tx_rate, vf, speed); return -EINVAL; } pktsize = mtu; /* subtract ethhdr size and 4 bytes crc since, f/w appends it */ pktsize = pktsize - sizeof(struct ethhdr) - 4; /* subtract ipv4 hdr size, tcp hdr size to get typical IPv4 MSS size */ pktsize = pktsize - sizeof(struct iphdr) - sizeof(struct tcphdr); /* configure Traffic Class for rate-limiting */ ret = t4_sched_params(adap, SCHED_CLASS_TYPE_PACKET, SCHED_CLASS_LEVEL_CL_RL, SCHED_CLASS_MODE_CLASS, SCHED_CLASS_RATEUNIT_BITS, SCHED_CLASS_RATEMODE_ABS, pi->tx_chan, class_id, 0, max_tx_rate * 1000, 0, pktsize); if (ret) { dev_err(adap->pdev_dev, "Err %d for Traffic Class config\n", ret); return -EINVAL; } dev_info(adap->pdev_dev, "Class %d with MSS %u configured with rate %u\n", class_id, pktsize, max_tx_rate); /* bind VF to configured Traffic Class */ fw_pfvf = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_SCHEDCLASS_ETH)); fw_class = class_id; ret = t4_set_params(adap, adap->mbox, adap->pf, vf + 1, 1, &fw_pfvf, &fw_class); if (ret) { dev_err(adap->pdev_dev, "Err %d in binding PF %d VF %d to Traffic Class %d\n", ret, adap->pf, vf, class_id); return -EINVAL; } dev_info(adap->pdev_dev, "PF %d VF %d is bound to Class %d\n", adap->pf, vf, class_id); adap->vfinfo[vf].tx_rate = max_tx_rate; return 0; } static int cxgb4_mgmt_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos, __be16 vlan_proto) { struct port_info *pi = netdev_priv(dev); struct adapter *adap = pi->adapter; int ret; if (vf >= adap->num_vfs || vlan > 4095 || qos > 7) return -EINVAL; if (vlan_proto != htons(ETH_P_8021Q) || qos != 0) return -EPROTONOSUPPORT; ret = t4_set_vlan_acl(adap, adap->mbox, vf + 1, vlan); if (!ret) { adap->vfinfo[vf].vlan = vlan; return 0; } dev_err(adap->pdev_dev, "Err %d %s VLAN ACL for PF/VF %d/%d\n", ret, (vlan ? "setting" : "clearing"), adap->pf, vf); return ret; } static int cxgb4_mgmt_set_vf_link_state(struct net_device *dev, int vf, int link) { struct port_info *pi = netdev_priv(dev); struct adapter *adap = pi->adapter; u32 param, val; int ret = 0; if (vf >= adap->num_vfs) return -EINVAL; switch (link) { case IFLA_VF_LINK_STATE_AUTO: val = FW_VF_LINK_STATE_AUTO; break; case IFLA_VF_LINK_STATE_ENABLE: val = FW_VF_LINK_STATE_ENABLE; break; case IFLA_VF_LINK_STATE_DISABLE: val = FW_VF_LINK_STATE_DISABLE; break; default: return -EINVAL; } param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_LINK_STATE)); ret = t4_set_params(adap, adap->mbox, adap->pf, vf + 1, 1, ¶m, &val); if (ret) { dev_err(adap->pdev_dev, "Error %d in setting PF %d VF %d link state\n", ret, adap->pf, vf); return -EINVAL; } adap->vfinfo[vf].link_state = link; return ret; } #endif /* CONFIG_PCI_IOV */ static int cxgb_set_mac_addr(struct net_device *dev, void *p) { int ret; struct sockaddr *addr = p; struct port_info *pi = netdev_priv(dev); if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; ret = cxgb4_update_mac_filt(pi, pi->viid, &pi->xact_addr_filt, addr->sa_data, true, &pi->smt_idx); if (ret < 0) return ret; memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); return 0; } #ifdef CONFIG_NET_POLL_CONTROLLER static void cxgb_netpoll(struct net_device *dev) { struct port_info *pi = netdev_priv(dev); struct adapter *adap = pi->adapter; if (adap->flags & CXGB4_USING_MSIX) { int i; struct sge_eth_rxq *rx = &adap->sge.ethrxq[pi->first_qset]; for (i = pi->nqsets; i; i--, rx++) t4_sge_intr_msix(0, &rx->rspq); } else t4_intr_handler(adap)(0, adap); } #endif static int cxgb_set_tx_maxrate(struct net_device *dev, int index, u32 rate) { struct port_info *pi = netdev_priv(dev); struct adapter *adap = pi->adapter; struct ch_sched_queue qe = { 0 }; struct ch_sched_params p = { 0 }; struct sched_class *e; u32 req_rate; int err = 0; if (!can_sched(dev)) return -ENOTSUPP; if (index < 0 || index > pi->nqsets - 1) return -EINVAL; if (!(adap->flags & CXGB4_FULL_INIT_DONE)) { dev_err(adap->pdev_dev, "Failed to rate limit on queue %d. Link Down?\n", index); return -EINVAL; } qe.queue = index; e = cxgb4_sched_queue_lookup(dev, &qe); if (e && e->info.u.params.level != SCHED_CLASS_LEVEL_CL_RL) { dev_err(adap->pdev_dev, "Queue %u already bound to class %u of type: %u\n", index, e->idx, e->info.u.params.level); return -EBUSY; } /* Convert from Mbps to Kbps */ req_rate = rate * 1000; /* Max rate is 100 Gbps */ if (req_rate > SCHED_MAX_RATE_KBPS) { dev_err(adap->pdev_dev, "Invalid rate %u Mbps, Max rate is %u Mbps\n", rate, SCHED_MAX_RATE_KBPS / 1000); return -ERANGE; } /* First unbind the queue from any existing class */ memset(&qe, 0, sizeof(qe)); qe.queue = index; qe.class = SCHED_CLS_NONE; err = cxgb4_sched_class_unbind(dev, (void *)(&qe), SCHED_QUEUE); if (err) { dev_err(adap->pdev_dev, "Unbinding Queue %d on port %d fail. Err: %d\n", index, pi->port_id, err); return err; } /* Queue already unbound */ if (!req_rate) return 0; /* Fetch any available unused or matching scheduling class */ p.type = SCHED_CLASS_TYPE_PACKET; p.u.params.level = SCHED_CLASS_LEVEL_CL_RL; p.u.params.mode = SCHED_CLASS_MODE_CLASS; p.u.params.rateunit = SCHED_CLASS_RATEUNIT_BITS; p.u.params.ratemode = SCHED_CLASS_RATEMODE_ABS; p.u.params.channel = pi->tx_chan; p.u.params.class = SCHED_CLS_NONE; p.u.params.minrate = 0; p.u.params.maxrate = req_rate; p.u.params.weight = 0; p.u.params.pktsize = dev->mtu; e = cxgb4_sched_class_alloc(dev, &p); if (!e) return -ENOMEM; /* Bind the queue to a scheduling class */ memset(&qe, 0, sizeof(qe)); qe.queue = index; qe.class = e->idx; err = cxgb4_sched_class_bind(dev, (void *)(&qe), SCHED_QUEUE); if (err) dev_err(adap->pdev_dev, "Queue rate limiting failed. Err: %d\n", err); return err; } static int cxgb_setup_tc_flower(struct net_device *dev, struct flow_cls_offload *cls_flower) { switch (cls_flower->command) { case FLOW_CLS_REPLACE: return cxgb4_tc_flower_replace(dev, cls_flower); case FLOW_CLS_DESTROY: return cxgb4_tc_flower_destroy(dev, cls_flower); case FLOW_CLS_STATS: return cxgb4_tc_flower_stats(dev, cls_flower); default: return -EOPNOTSUPP; } } static int cxgb_setup_tc_cls_u32(struct net_device *dev, struct tc_cls_u32_offload *cls_u32) { switch (cls_u32->command) { case TC_CLSU32_NEW_KNODE: case TC_CLSU32_REPLACE_KNODE: return cxgb4_config_knode(dev, cls_u32); case TC_CLSU32_DELETE_KNODE: return cxgb4_delete_knode(dev, cls_u32); default: return -EOPNOTSUPP; } } static int cxgb_setup_tc_matchall(struct net_device *dev, struct tc_cls_matchall_offload *cls_matchall, bool ingress) { struct adapter *adap = netdev2adap(dev); if (!adap->tc_matchall) return -ENOMEM; switch (cls_matchall->command) { case TC_CLSMATCHALL_REPLACE: return cxgb4_tc_matchall_replace(dev, cls_matchall, ingress); case TC_CLSMATCHALL_DESTROY: return cxgb4_tc_matchall_destroy(dev, cls_matchall, ingress); case TC_CLSMATCHALL_STATS: if (ingress) return cxgb4_tc_matchall_stats(dev, cls_matchall); break; default: break; } return -EOPNOTSUPP; } static int cxgb_setup_tc_block_ingress_cb(enum tc_setup_type type, void *type_data, void *cb_priv) { struct net_device *dev = cb_priv; struct port_info *pi = netdev2pinfo(dev); struct adapter *adap = netdev2adap(dev); if (!(adap->flags & CXGB4_FULL_INIT_DONE)) { dev_err(adap->pdev_dev, "Failed to setup tc on port %d. Link Down?\n", pi->port_id); return -EINVAL; } if (!tc_cls_can_offload_and_chain0(dev, type_data)) return -EOPNOTSUPP; switch (type) { case TC_SETUP_CLSU32: return cxgb_setup_tc_cls_u32(dev, type_data); case TC_SETUP_CLSFLOWER: return cxgb_setup_tc_flower(dev, type_data); case TC_SETUP_CLSMATCHALL: return cxgb_setup_tc_matchall(dev, type_data, true); default: return -EOPNOTSUPP; } } static int cxgb_setup_tc_block_egress_cb(enum tc_setup_type type, void *type_data, void *cb_priv) { struct net_device *dev = cb_priv; struct port_info *pi = netdev2pinfo(dev); struct adapter *adap = netdev2adap(dev); if (!(adap->flags & CXGB4_FULL_INIT_DONE)) { dev_err(adap->pdev_dev, "Failed to setup tc on port %d. Link Down?\n", pi->port_id); return -EINVAL; } if (!tc_cls_can_offload_and_chain0(dev, type_data)) return -EOPNOTSUPP; switch (type) { case TC_SETUP_CLSMATCHALL: return cxgb_setup_tc_matchall(dev, type_data, false); default: break; } return -EOPNOTSUPP; } static int cxgb_setup_tc_mqprio(struct net_device *dev, struct tc_mqprio_qopt_offload *mqprio) { struct adapter *adap = netdev2adap(dev); if (!is_ethofld(adap) || !adap->tc_mqprio) return -ENOMEM; return cxgb4_setup_tc_mqprio(dev, mqprio); } static LIST_HEAD(cxgb_block_cb_list); static int cxgb_setup_tc_block(struct net_device *dev, struct flow_block_offload *f) { struct port_info *pi = netdev_priv(dev); flow_setup_cb_t *cb; bool ingress_only; pi->tc_block_shared = f->block_shared; if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) { cb = cxgb_setup_tc_block_egress_cb; ingress_only = false; } else { cb = cxgb_setup_tc_block_ingress_cb; ingress_only = true; } return flow_block_cb_setup_simple(f, &cxgb_block_cb_list, cb, pi, dev, ingress_only); } static int cxgb_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data) { switch (type) { case TC_SETUP_QDISC_MQPRIO: return cxgb_setup_tc_mqprio(dev, type_data); case TC_SETUP_BLOCK: return cxgb_setup_tc_block(dev, type_data); default: return -EOPNOTSUPP; } } static void cxgb_del_udp_tunnel(struct net_device *netdev, struct udp_tunnel_info *ti) { struct port_info *pi = netdev_priv(netdev); struct adapter *adapter = pi->adapter; unsigned int chip_ver = CHELSIO_CHIP_VERSION(adapter->params.chip); u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 }; int ret = 0, i; if (chip_ver < CHELSIO_T6) return; switch (ti->type) { case UDP_TUNNEL_TYPE_VXLAN: if (!adapter->vxlan_port_cnt || adapter->vxlan_port != ti->port) return; /* Invalid VxLAN destination port */ adapter->vxlan_port_cnt--; if (adapter->vxlan_port_cnt) return; adapter->vxlan_port = 0; t4_write_reg(adapter, MPS_RX_VXLAN_TYPE_A, 0); break; case UDP_TUNNEL_TYPE_GENEVE: if (!adapter->geneve_port_cnt || adapter->geneve_port != ti->port) return; /* Invalid GENEVE destination port */ adapter->geneve_port_cnt--; if (adapter->geneve_port_cnt) return; adapter->geneve_port = 0; t4_write_reg(adapter, MPS_RX_GENEVE_TYPE_A, 0); break; default: return; } /* Matchall mac entries can be deleted only after all tunnel ports * are brought down or removed. */ if (!adapter->rawf_cnt) return; for_each_port(adapter, i) { pi = adap2pinfo(adapter, i); ret = t4_free_raw_mac_filt(adapter, pi->viid, match_all_mac, match_all_mac, adapter->rawf_start + pi->port_id, 1, pi->port_id, false); if (ret < 0) { netdev_info(netdev, "Failed to free mac filter entry, for port %d\n", i); return; } } } static void cxgb_add_udp_tunnel(struct net_device *netdev, struct udp_tunnel_info *ti) { struct port_info *pi = netdev_priv(netdev); struct adapter *adapter = pi->adapter; unsigned int chip_ver = CHELSIO_CHIP_VERSION(adapter->params.chip); u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 }; int i, ret; if (chip_ver < CHELSIO_T6 || !adapter->rawf_cnt) return; switch (ti->type) { case UDP_TUNNEL_TYPE_VXLAN: /* Callback for adding vxlan port can be called with the same * port for both IPv4 and IPv6. We should not disable the * offloading when the same port for both protocols is added * and later one of them is removed. */ if (adapter->vxlan_port_cnt && adapter->vxlan_port == ti->port) { adapter->vxlan_port_cnt++; return; } /* We will support only one VxLAN port */ if (adapter->vxlan_port_cnt) { netdev_info(netdev, "UDP port %d already offloaded, not adding port %d\n", be16_to_cpu(adapter->vxlan_port), be16_to_cpu(ti->port)); return; } adapter->vxlan_port = ti->port; adapter->vxlan_port_cnt = 1; t4_write_reg(adapter, MPS_RX_VXLAN_TYPE_A, VXLAN_V(be16_to_cpu(ti->port)) | VXLAN_EN_F); break; case UDP_TUNNEL_TYPE_GENEVE: if (adapter->geneve_port_cnt && adapter->geneve_port == ti->port) { adapter->geneve_port_cnt++; return; } /* We will support only one GENEVE port */ if (adapter->geneve_port_cnt) { netdev_info(netdev, "UDP port %d already offloaded, not adding port %d\n", be16_to_cpu(adapter->geneve_port), be16_to_cpu(ti->port)); return; } adapter->geneve_port = ti->port; adapter->geneve_port_cnt = 1; t4_write_reg(adapter, MPS_RX_GENEVE_TYPE_A, GENEVE_V(be16_to_cpu(ti->port)) | GENEVE_EN_F); break; default: return; } /* Create a 'match all' mac filter entry for inner mac, * if raw mac interface is supported. Once the linux kernel provides * driver entry points for adding/deleting the inner mac addresses, * we will remove this 'match all' entry and fallback to adding * exact match filters. */ for_each_port(adapter, i) { pi = adap2pinfo(adapter, i); ret = t4_alloc_raw_mac_filt(adapter, pi->viid, match_all_mac, match_all_mac, adapter->rawf_start + pi->port_id, 1, pi->port_id, false); if (ret < 0) { netdev_info(netdev, "Failed to allocate a mac filter entry, not adding port %d\n", be16_to_cpu(ti->port)); cxgb_del_udp_tunnel(netdev, ti); return; } } } static netdev_features_t cxgb_features_check(struct sk_buff *skb, struct net_device *dev, netdev_features_t features) { struct port_info *pi = netdev_priv(dev); struct adapter *adapter = pi->adapter; if (CHELSIO_CHIP_VERSION(adapter->params.chip) < CHELSIO_T6) return features; /* Check if hw supports offload for this packet */ if (!skb->encapsulation || cxgb_encap_offload_supported(skb)) return features; /* Offload is not supported for this encapsulated packet */ return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); } static netdev_features_t cxgb_fix_features(struct net_device *dev, netdev_features_t features) { /* Disable GRO, if RX_CSUM is disabled */ if (!(features & NETIF_F_RXCSUM)) features &= ~NETIF_F_GRO; return features; } static const struct net_device_ops cxgb4_netdev_ops = { .ndo_open = cxgb_open, .ndo_stop = cxgb_close, .ndo_start_xmit = t4_start_xmit, .ndo_select_queue = cxgb_select_queue, .ndo_get_stats64 = cxgb_get_stats, .ndo_set_rx_mode = cxgb_set_rxmode, .ndo_set_mac_address = cxgb_set_mac_addr, .ndo_set_features = cxgb_set_features, .ndo_validate_addr = eth_validate_addr, .ndo_do_ioctl = cxgb_ioctl, .ndo_change_mtu = cxgb_change_mtu, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = cxgb_netpoll, #endif #ifdef CONFIG_CHELSIO_T4_FCOE .ndo_fcoe_enable = cxgb_fcoe_enable, .ndo_fcoe_disable = cxgb_fcoe_disable, #endif /* CONFIG_CHELSIO_T4_FCOE */ .ndo_set_tx_maxrate = cxgb_set_tx_maxrate, .ndo_setup_tc = cxgb_setup_tc, .ndo_udp_tunnel_add = cxgb_add_udp_tunnel, .ndo_udp_tunnel_del = cxgb_del_udp_tunnel, .ndo_features_check = cxgb_features_check, .ndo_fix_features = cxgb_fix_features, }; #ifdef CONFIG_PCI_IOV static const struct net_device_ops cxgb4_mgmt_netdev_ops = { .ndo_open = cxgb4_mgmt_open, .ndo_set_vf_mac = cxgb4_mgmt_set_vf_mac, .ndo_get_vf_config = cxgb4_mgmt_get_vf_config, .ndo_set_vf_rate = cxgb4_mgmt_set_vf_rate, .ndo_get_phys_port_id = cxgb4_mgmt_get_phys_port_id, .ndo_set_vf_vlan = cxgb4_mgmt_set_vf_vlan, .ndo_set_vf_link_state = cxgb4_mgmt_set_vf_link_state, }; #endif static void cxgb4_mgmt_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { struct adapter *adapter = netdev2adap(dev); strlcpy(info->driver, cxgb4_driver_name, sizeof(info->driver)); strlcpy(info->bus_info, pci_name(adapter->pdev), sizeof(info->bus_info)); } static const struct ethtool_ops cxgb4_mgmt_ethtool_ops = { .get_drvinfo = cxgb4_mgmt_get_drvinfo, }; static void notify_fatal_err(struct work_struct *work) { struct adapter *adap; adap = container_of(work, struct adapter, fatal_err_notify_task); notify_ulds(adap, CXGB4_STATE_FATAL_ERROR); } void t4_fatal_err(struct adapter *adap) { int port; if (pci_channel_offline(adap->pdev)) return; /* Disable the SGE since ULDs are going to free resources that * could be exposed to the adapter. RDMA MWs for example... */ t4_shutdown_adapter(adap); for_each_port(adap, port) { struct net_device *dev = adap->port[port]; /* If we get here in very early initialization the network * devices may not have been set up yet. */ if (!dev) continue; netif_tx_stop_all_queues(dev); netif_carrier_off(dev); } dev_alert(adap->pdev_dev, "encountered fatal error, adapter stopped\n"); queue_work(adap->workq, &adap->fatal_err_notify_task); } static void setup_memwin(struct adapter *adap) { u32 nic_win_base = t4_get_util_window(adap); t4_setup_memwin(adap, nic_win_base, MEMWIN_NIC); } static void setup_memwin_rdma(struct adapter *adap) { if (adap->vres.ocq.size) { u32 start; unsigned int sz_kb; start = t4_read_pcie_cfg4(adap, PCI_BASE_ADDRESS_2); start &= PCI_BASE_ADDRESS_MEM_MASK; start += OCQ_WIN_OFFSET(adap->pdev, &adap->vres); sz_kb = roundup_pow_of_two(adap->vres.ocq.size) >> 10; t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN_A, 3), start | BIR_V(1) | WINDOW_V(ilog2(sz_kb))); t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET_A, 3), adap->vres.ocq.start); t4_read_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET_A, 3)); } } /* HMA Definitions */ /* The maximum number of address that can be send in a single FW cmd */ #define HMA_MAX_ADDR_IN_CMD 5 #define HMA_PAGE_SIZE PAGE_SIZE #define HMA_MAX_NO_FW_ADDRESS (16 << 10) /* FW supports 16K addresses */ #define HMA_PAGE_ORDER \ ((HMA_PAGE_SIZE < HMA_MAX_NO_FW_ADDRESS) ? \ ilog2(HMA_MAX_NO_FW_ADDRESS / HMA_PAGE_SIZE) : 0) /* The minimum and maximum possible HMA sizes that can be specified in the FW * configuration(in units of MB). */ #define HMA_MIN_TOTAL_SIZE 1 #define HMA_MAX_TOTAL_SIZE \ (((HMA_PAGE_SIZE << HMA_PAGE_ORDER) * \ HMA_MAX_NO_FW_ADDRESS) >> 20) static void adap_free_hma_mem(struct adapter *adapter) { struct scatterlist *iter; struct page *page; int i; if (!adapter->hma.sgt) return; if (adapter->hma.flags & HMA_DMA_MAPPED_FLAG) { dma_unmap_sg(adapter->pdev_dev, adapter->hma.sgt->sgl, adapter->hma.sgt->nents, PCI_DMA_BIDIRECTIONAL); adapter->hma.flags &= ~HMA_DMA_MAPPED_FLAG; } for_each_sg(adapter->hma.sgt->sgl, iter, adapter->hma.sgt->orig_nents, i) { page = sg_page(iter); if (page) __free_pages(page, HMA_PAGE_ORDER); } kfree(adapter->hma.phy_addr); sg_free_table(adapter->hma.sgt); kfree(adapter->hma.sgt); adapter->hma.sgt = NULL; } static int adap_config_hma(struct adapter *adapter) { struct scatterlist *sgl, *iter; struct sg_table *sgt; struct page *newpage; unsigned int i, j, k; u32 param, hma_size; unsigned int ncmds; size_t page_size; u32 page_order; int node, ret; /* HMA is supported only for T6+ cards. * Avoid initializing HMA in kdump kernels. */ if (is_kdump_kernel() || CHELSIO_CHIP_VERSION(adapter->params.chip) < CHELSIO_T6) return 0; /* Get the HMA region size required by fw */ param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_HMA_SIZE)); ret = t4_query_params(adapter, adapter->mbox, adapter->pf, 0, 1, ¶m, &hma_size); /* An error means card has its own memory or HMA is not supported by * the firmware. Return without any errors. */ if (ret || !hma_size) return 0; if (hma_size < HMA_MIN_TOTAL_SIZE || hma_size > HMA_MAX_TOTAL_SIZE) { dev_err(adapter->pdev_dev, "HMA size %uMB beyond bounds(%u-%lu)MB\n", hma_size, HMA_MIN_TOTAL_SIZE, HMA_MAX_TOTAL_SIZE); return -EINVAL; } page_size = HMA_PAGE_SIZE; page_order = HMA_PAGE_ORDER; adapter->hma.sgt = kzalloc(sizeof(*adapter->hma.sgt), GFP_KERNEL); if (unlikely(!adapter->hma.sgt)) { dev_err(adapter->pdev_dev, "HMA SG table allocation failed\n"); return -ENOMEM; } sgt = adapter->hma.sgt; /* FW returned value will be in MB's */ sgt->orig_nents = (hma_size << 20) / (page_size << page_order); if (sg_alloc_table(sgt, sgt->orig_nents, GFP_KERNEL)) { dev_err(adapter->pdev_dev, "HMA SGL allocation failed\n"); kfree(adapter->hma.sgt); adapter->hma.sgt = NULL; return -ENOMEM; } sgl = adapter->hma.sgt->sgl; node = dev_to_node(adapter->pdev_dev); for_each_sg(sgl, iter, sgt->orig_nents, i) { newpage = alloc_pages_node(node, __GFP_NOWARN | GFP_KERNEL | __GFP_ZERO, page_order); if (!newpage) { dev_err(adapter->pdev_dev, "Not enough memory for HMA page allocation\n"); ret = -ENOMEM; goto free_hma; } sg_set_page(iter, newpage, page_size << page_order, 0); } sgt->nents = dma_map_sg(adapter->pdev_dev, sgl, sgt->orig_nents, DMA_BIDIRECTIONAL); if (!sgt->nents) { dev_err(adapter->pdev_dev, "Not enough memory for HMA DMA mapping"); ret = -ENOMEM; goto free_hma; } adapter->hma.flags |= HMA_DMA_MAPPED_FLAG; adapter->hma.phy_addr = kcalloc(sgt->nents, sizeof(dma_addr_t), GFP_KERNEL); if (unlikely(!adapter->hma.phy_addr)) goto free_hma; for_each_sg(sgl, iter, sgt->nents, i) { newpage = sg_page(iter); adapter->hma.phy_addr[i] = sg_dma_address(iter); } ncmds = DIV_ROUND_UP(sgt->nents, HMA_MAX_ADDR_IN_CMD); /* Pass on the addresses to firmware */ for (i = 0, k = 0; i < ncmds; i++, k += HMA_MAX_ADDR_IN_CMD) { struct fw_hma_cmd hma_cmd; u8 naddr = HMA_MAX_ADDR_IN_CMD; u8 soc = 0, eoc = 0; u8 hma_mode = 1; /* Presently we support only Page table mode */ soc = (i == 0) ? 1 : 0; eoc = (i == ncmds - 1) ? 1 : 0; /* For last cmd, set naddr corresponding to remaining * addresses */ if (i == ncmds - 1) { naddr = sgt->nents % HMA_MAX_ADDR_IN_CMD; naddr = naddr ? naddr : HMA_MAX_ADDR_IN_CMD; } memset(&hma_cmd, 0, sizeof(hma_cmd)); hma_cmd.op_pkd = htonl(FW_CMD_OP_V(FW_HMA_CMD) | FW_CMD_REQUEST_F | FW_CMD_WRITE_F); hma_cmd.retval_len16 = htonl(FW_LEN16(hma_cmd)); hma_cmd.mode_to_pcie_params = htonl(FW_HMA_CMD_MODE_V(hma_mode) | FW_HMA_CMD_SOC_V(soc) | FW_HMA_CMD_EOC_V(eoc)); /* HMA cmd size specified in MB's */ hma_cmd.naddr_size = htonl(FW_HMA_CMD_SIZE_V(hma_size) | FW_HMA_CMD_NADDR_V(naddr)); /* Total Page size specified in units of 4K */ hma_cmd.addr_size_pkd = htonl(FW_HMA_CMD_ADDR_SIZE_V ((page_size << page_order) >> 12)); /* Fill the 5 addresses */ for (j = 0; j < naddr; j++) { hma_cmd.phy_address[j] = cpu_to_be64(adapter->hma.phy_addr[j + k]); } ret = t4_wr_mbox(adapter, adapter->mbox, &hma_cmd, sizeof(hma_cmd), &hma_cmd); if (ret) { dev_err(adapter->pdev_dev, "HMA FW command failed with err %d\n", ret); goto free_hma; } } if (!ret) dev_info(adapter->pdev_dev, "Reserved %uMB host memory for HMA\n", hma_size); return ret; free_hma: adap_free_hma_mem(adapter); return ret; } static int adap_init1(struct adapter *adap, struct fw_caps_config_cmd *c) { u32 v; int ret; /* Now that we've successfully configured and initialized the adapter * can ask the Firmware what resources it has provisioned for us. */ ret = t4_get_pfres(adap); if (ret) { dev_err(adap->pdev_dev, "Unable to retrieve resource provisioning information\n"); return ret; } /* get device capabilities */ memset(c, 0, sizeof(*c)); c->op_to_write = htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) | FW_CMD_REQUEST_F | FW_CMD_READ_F); c->cfvalid_to_len16 = htonl(FW_LEN16(*c)); ret = t4_wr_mbox(adap, adap->mbox, c, sizeof(*c), c); if (ret < 0) return ret; c->op_to_write = htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) | FW_CMD_REQUEST_F | FW_CMD_WRITE_F); ret = t4_wr_mbox(adap, adap->mbox, c, sizeof(*c), NULL); if (ret < 0) return ret; ret = t4_config_glbl_rss(adap, adap->pf, FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL, FW_RSS_GLB_CONFIG_CMD_TNLMAPEN_F | FW_RSS_GLB_CONFIG_CMD_TNLALLLKP_F); if (ret < 0) return ret; ret = t4_cfg_pfvf(adap, adap->mbox, adap->pf, 0, adap->sge.egr_sz, 64, MAX_INGQ, 0, 0, 4, 0xf, 0xf, 16, FW_CMD_CAP_PF, FW_CMD_CAP_PF); if (ret < 0) return ret; t4_sge_init(adap); /* tweak some settings */ t4_write_reg(adap, TP_SHIFT_CNT_A, 0x64f8849); t4_write_reg(adap, ULP_RX_TDDP_PSZ_A, HPZ0_V(PAGE_SHIFT - 12)); t4_write_reg(adap, TP_PIO_ADDR_A, TP_INGRESS_CONFIG_A); v = t4_read_reg(adap, TP_PIO_DATA_A); t4_write_reg(adap, TP_PIO_DATA_A, v & ~CSUM_HAS_PSEUDO_HDR_F); /* first 4 Tx modulation queues point to consecutive Tx channels */ adap->params.tp.tx_modq_map = 0xE4; t4_write_reg(adap, TP_TX_MOD_QUEUE_REQ_MAP_A, TX_MOD_QUEUE_REQ_MAP_V(adap->params.tp.tx_modq_map)); /* associate each Tx modulation queue with consecutive Tx channels */ v = 0x84218421; t4_write_indirect(adap, TP_PIO_ADDR_A, TP_PIO_DATA_A, &v, 1, TP_TX_SCHED_HDR_A); t4_write_indirect(adap, TP_PIO_ADDR_A, TP_PIO_DATA_A, &v, 1, TP_TX_SCHED_FIFO_A); t4_write_indirect(adap, TP_PIO_ADDR_A, TP_PIO_DATA_A, &v, 1, TP_TX_SCHED_PCMD_A); #define T4_TX_MODQ_10G_WEIGHT_DEFAULT 16 /* in KB units */ if (is_offload(adap)) { t4_write_reg(adap, TP_TX_MOD_QUEUE_WEIGHT0_A, TX_MODQ_WEIGHT0_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) | TX_MODQ_WEIGHT1_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) | TX_MODQ_WEIGHT2_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) | TX_MODQ_WEIGHT3_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT)); t4_write_reg(adap, TP_TX_MOD_CHANNEL_WEIGHT_A, TX_MODQ_WEIGHT0_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) | TX_MODQ_WEIGHT1_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) | TX_MODQ_WEIGHT2_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) | TX_MODQ_WEIGHT3_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT)); } /* get basic stuff going */ return t4_early_init(adap, adap->pf); } /* * Max # of ATIDs. The absolute HW max is 16K but we keep it lower. */ #define MAX_ATIDS 8192U /* * Phase 0 of initialization: contact FW, obtain config, perform basic init. * * If the firmware we're dealing with has Configuration File support, then * we use that to perform all configuration */ /* * Tweak configuration based on module parameters, etc. Most of these have * defaults assigned to them by Firmware Configuration Files (if we're using * them) but need to be explicitly set if we're using hard-coded * initialization. But even in the case of using Firmware Configuration * Files, we'd like to expose the ability to change these via module * parameters so these are essentially common tweaks/settings for * Configuration Files and hard-coded initialization ... */ static int adap_init0_tweaks(struct adapter *adapter) { /* * Fix up various Host-Dependent Parameters like Page Size, Cache * Line Size, etc. The firmware default is for a 4KB Page Size and * 64B Cache Line Size ... */ t4_fixup_host_params(adapter, PAGE_SIZE, L1_CACHE_BYTES); /* * Process module parameters which affect early initialization. */ if (rx_dma_offset != 2 && rx_dma_offset != 0) { dev_err(&adapter->pdev->dev, "Ignoring illegal rx_dma_offset=%d, using 2\n", rx_dma_offset); rx_dma_offset = 2; } t4_set_reg_field(adapter, SGE_CONTROL_A, PKTSHIFT_V(PKTSHIFT_M), PKTSHIFT_V(rx_dma_offset)); /* * Don't include the "IP Pseudo Header" in CPL_RX_PKT checksums: Linux * adds the pseudo header itself. */ t4_tp_wr_bits_indirect(adapter, TP_INGRESS_CONFIG_A, CSUM_HAS_PSEUDO_HDR_F, 0); return 0; } /* 10Gb/s-BT PHY Support. chip-external 10Gb/s-BT PHYs are complex chips * unto themselves and they contain their own firmware to perform their * tasks ... */ static int phy_aq1202_version(const u8 *phy_fw_data, size_t phy_fw_size) { int offset; /* At offset 0x8 you're looking for the primary image's * starting offset which is 3 Bytes wide * * At offset 0xa of the primary image, you look for the offset * of the DRAM segment which is 3 Bytes wide. * * The FW version is at offset 0x27e of the DRAM and is 2 Bytes * wide */ #define be16(__p) (((__p)[0] << 8) | (__p)[1]) #define le16(__p) ((__p)[0] | ((__p)[1] << 8)) #define le24(__p) (le16(__p) | ((__p)[2] << 16)) offset = le24(phy_fw_data + 0x8) << 12; offset = le24(phy_fw_data + offset + 0xa); return be16(phy_fw_data + offset + 0x27e); #undef be16 #undef le16 #undef le24 } static struct info_10gbt_phy_fw { unsigned int phy_fw_id; /* PCI Device ID */ char *phy_fw_file; /* /lib/firmware/ PHY Firmware file */ int (*phy_fw_version)(const u8 *phy_fw_data, size_t phy_fw_size); int phy_flash; /* Has FLASH for PHY Firmware */ } phy_info_array[] = { { PHY_AQ1202_DEVICEID, PHY_AQ1202_FIRMWARE, phy_aq1202_version, 1, }, { PHY_BCM84834_DEVICEID, PHY_BCM84834_FIRMWARE, NULL, 0, }, { 0, NULL, NULL }, }; static struct info_10gbt_phy_fw *find_phy_info(int devid) { int i; for (i = 0; i < ARRAY_SIZE(phy_info_array); i++) { if (phy_info_array[i].phy_fw_id == devid) return &phy_info_array[i]; } return NULL; } /* Handle updating of chip-external 10Gb/s-BT PHY firmware. This needs to * happen after the FW_RESET_CMD but before the FW_INITIALIZE_CMD. On error * we return a negative error number. If we transfer new firmware we return 1 * (from t4_load_phy_fw()). If we don't do anything we return 0. */ static int adap_init0_phy(struct adapter *adap) { const struct firmware *phyf; int ret; struct info_10gbt_phy_fw *phy_info; /* Use the device ID to determine which PHY file to flash. */ phy_info = find_phy_info(adap->pdev->device); if (!phy_info) { dev_warn(adap->pdev_dev, "No PHY Firmware file found for this PHY\n"); return -EOPNOTSUPP; } /* If we have a T4 PHY firmware file under /lib/firmware/cxgb4/, then * use that. The adapter firmware provides us with a memory buffer * where we can load a PHY firmware file from the host if we want to * override the PHY firmware File in flash. */ ret = request_firmware_direct(&phyf, phy_info->phy_fw_file, adap->pdev_dev); if (ret < 0) { /* For adapters without FLASH attached to PHY for their * firmware, it's obviously a fatal error if we can't get the * firmware to the adapter. For adapters with PHY firmware * FLASH storage, it's worth a warning if we can't find the * PHY Firmware but we'll neuter the error ... */ dev_err(adap->pdev_dev, "unable to find PHY Firmware image " "/lib/firmware/%s, error %d\n", phy_info->phy_fw_file, -ret); if (phy_info->phy_flash) { int cur_phy_fw_ver = 0; t4_phy_fw_ver(adap, &cur_phy_fw_ver); dev_warn(adap->pdev_dev, "continuing with, on-adapter " "FLASH copy, version %#x\n", cur_phy_fw_ver); ret = 0; } return ret; } /* Load PHY Firmware onto adapter. */ ret = t4_load_phy_fw(adap, MEMWIN_NIC, &adap->win0_lock, phy_info->phy_fw_version, (u8 *)phyf->data, phyf->size); if (ret < 0) dev_err(adap->pdev_dev, "PHY Firmware transfer error %d\n", -ret); else if (ret > 0) { int new_phy_fw_ver = 0; if (phy_info->phy_fw_version) new_phy_fw_ver = phy_info->phy_fw_version(phyf->data, phyf->size); dev_info(adap->pdev_dev, "Successfully transferred PHY " "Firmware /lib/firmware/%s, version %#x\n", phy_info->phy_fw_file, new_phy_fw_ver); } release_firmware(phyf); return ret; } /* * Attempt to initialize the adapter via a Firmware Configuration File. */ static int adap_init0_config(struct adapter *adapter, int reset) { char *fw_config_file, fw_config_file_path[256]; u32 finiver, finicsum, cfcsum, param, val; struct fw_caps_config_cmd caps_cmd; unsigned long mtype = 0, maddr = 0; const struct firmware *cf; char *config_name = NULL; int config_issued = 0; int ret; /* * Reset device if necessary. */ if (reset) { ret = t4_fw_reset(adapter, adapter->mbox, PIORSTMODE_F | PIORST_F); if (ret < 0) goto bye; } /* If this is a 10Gb/s-BT adapter make sure the chip-external * 10Gb/s-BT PHYs have up-to-date firmware. Note that this step needs * to be performed after any global adapter RESET above since some * PHYs only have local RAM copies of the PHY firmware. */ if (is_10gbt_device(adapter->pdev->device)) { ret = adap_init0_phy(adapter); if (ret < 0) goto bye; } /* * If we have a T4 configuration file under /lib/firmware/cxgb4/, * then use that. Otherwise, use the configuration file stored * in the adapter flash ... */ switch (CHELSIO_CHIP_VERSION(adapter->params.chip)) { case CHELSIO_T4: fw_config_file = FW4_CFNAME; break; case CHELSIO_T5: fw_config_file = FW5_CFNAME; break; case CHELSIO_T6: fw_config_file = FW6_CFNAME; break; default: dev_err(adapter->pdev_dev, "Device %d is not supported\n", adapter->pdev->device); ret = -EINVAL; goto bye; } ret = request_firmware(&cf, fw_config_file, adapter->pdev_dev); if (ret < 0) { config_name = "On FLASH"; mtype = FW_MEMTYPE_CF_FLASH; maddr = t4_flash_cfg_addr(adapter); } else { u32 params[7], val[7]; sprintf(fw_config_file_path, "/lib/firmware/%s", fw_config_file); config_name = fw_config_file_path; if (cf->size >= FLASH_CFG_MAX_SIZE) ret = -ENOMEM; else { params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_CF)); ret = t4_query_params(adapter, adapter->mbox, adapter->pf, 0, 1, params, val); if (ret == 0) { /* * For t4_memory_rw() below addresses and * sizes have to be in terms of multiples of 4 * bytes. So, if the Configuration File isn't * a multiple of 4 bytes in length we'll have * to write that out separately since we can't * guarantee that the bytes following the * residual byte in the buffer returned by * request_firmware() are zeroed out ... */ size_t resid = cf->size & 0x3; size_t size = cf->size & ~0x3; __be32 *data = (__be32 *)cf->data; mtype = FW_PARAMS_PARAM_Y_G(val[0]); maddr = FW_PARAMS_PARAM_Z_G(val[0]) << 16; spin_lock(&adapter->win0_lock); ret = t4_memory_rw(adapter, 0, mtype, maddr, size, data, T4_MEMORY_WRITE); if (ret == 0 && resid != 0) { union { __be32 word; char buf[4]; } last; int i; last.word = data[size >> 2]; for (i = resid; i < 4; i++) last.buf[i] = 0; ret = t4_memory_rw(adapter, 0, mtype, maddr + size, 4, &last.word, T4_MEMORY_WRITE); } spin_unlock(&adapter->win0_lock); } } release_firmware(cf); if (ret) goto bye; } val = 0; /* Ofld + Hash filter is supported. Older fw will fail this request and * it is fine. */ param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_HASHFILTER_WITH_OFLD)); ret = t4_set_params(adapter, adapter->mbox, adapter->pf, 0, 1, ¶m, &val); /* FW doesn't know about Hash filter + ofld support, * it's not a problem, don't return an error. */ if (ret < 0) { dev_warn(adapter->pdev_dev, "Hash filter with ofld is not supported by FW\n"); } /* * Issue a Capability Configuration command to the firmware to get it * to parse the Configuration File. We don't use t4_fw_config_file() * because we want the ability to modify various features after we've * processed the configuration file ... */ memset(&caps_cmd, 0, sizeof(caps_cmd)); caps_cmd.op_to_write = htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) | FW_CMD_REQUEST_F | FW_CMD_READ_F); caps_cmd.cfvalid_to_len16 = htonl(FW_CAPS_CONFIG_CMD_CFVALID_F | FW_CAPS_CONFIG_CMD_MEMTYPE_CF_V(mtype) | FW_CAPS_CONFIG_CMD_MEMADDR64K_CF_V(maddr >> 16) | FW_LEN16(caps_cmd)); ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd), &caps_cmd); /* If the CAPS_CONFIG failed with an ENOENT (for a Firmware * Configuration File in FLASH), our last gasp effort is to use the * Firmware Configuration File which is embedded in the firmware. A * very few early versions of the firmware didn't have one embedded * but we can ignore those. */ if (ret == -ENOENT) { memset(&caps_cmd, 0, sizeof(caps_cmd)); caps_cmd.op_to_write = htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) | FW_CMD_REQUEST_F | FW_CMD_READ_F); caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd)); ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd), &caps_cmd); config_name = "Firmware Default"; } config_issued = 1; if (ret < 0) goto bye; finiver = ntohl(caps_cmd.finiver); finicsum = ntohl(caps_cmd.finicsum); cfcsum = ntohl(caps_cmd.cfcsum); if (finicsum != cfcsum) dev_warn(adapter->pdev_dev, "Configuration File checksum "\ "mismatch: [fini] csum=%#x, computed csum=%#x\n", finicsum, cfcsum); /* * And now tell the firmware to use the configuration we just loaded. */ caps_cmd.op_to_write = htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) | FW_CMD_REQUEST_F | FW_CMD_WRITE_F); caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd)); ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd), NULL); if (ret < 0) goto bye; /* * Tweak configuration based on system architecture, module * parameters, etc. */ ret = adap_init0_tweaks(adapter); if (ret < 0) goto bye; /* We will proceed even if HMA init fails. */ ret = adap_config_hma(adapter); if (ret) dev_err(adapter->pdev_dev, "HMA configuration failed with error %d\n", ret); if (is_t6(adapter->params.chip)) { adap_config_hpfilter(adapter); ret = setup_ppod_edram(adapter); if (!ret) dev_info(adapter->pdev_dev, "Successfully enabled " "ppod edram feature\n"); } /* * And finally tell the firmware to initialize itself using the * parameters from the Configuration File. */ ret = t4_fw_initialize(adapter, adapter->mbox); if (ret < 0) goto bye; /* Emit Firmware Configuration File information and return * successfully. */ dev_info(adapter->pdev_dev, "Successfully configured using Firmware "\ "Configuration File \"%s\", version %#x, computed checksum %#x\n", config_name, finiver, cfcsum); return 0; /* * Something bad happened. Return the error ... (If the "error" * is that there's no Configuration File on the adapter we don't * want to issue a warning since this is fairly common.) */ bye: if (config_issued && ret != -ENOENT) dev_warn(adapter->pdev_dev, "\"%s\" configuration file error %d\n", config_name, -ret); return ret; } static struct fw_info fw_info_array[] = { { .chip = CHELSIO_T4, .fs_name = FW4_CFNAME, .fw_mod_name = FW4_FNAME, .fw_hdr = { .chip = FW_HDR_CHIP_T4, .fw_ver = __cpu_to_be32(FW_VERSION(T4)), .intfver_nic = FW_INTFVER(T4, NIC), .intfver_vnic = FW_INTFVER(T4, VNIC), .intfver_ri = FW_INTFVER(T4, RI), .intfver_iscsi = FW_INTFVER(T4, ISCSI), .intfver_fcoe = FW_INTFVER(T4, FCOE), }, }, { .chip = CHELSIO_T5, .fs_name = FW5_CFNAME, .fw_mod_name = FW5_FNAME, .fw_hdr = { .chip = FW_HDR_CHIP_T5, .fw_ver = __cpu_to_be32(FW_VERSION(T5)), .intfver_nic = FW_INTFVER(T5, NIC), .intfver_vnic = FW_INTFVER(T5, VNIC), .intfver_ri = FW_INTFVER(T5, RI), .intfver_iscsi = FW_INTFVER(T5, ISCSI), .intfver_fcoe = FW_INTFVER(T5, FCOE), }, }, { .chip = CHELSIO_T6, .fs_name = FW6_CFNAME, .fw_mod_name = FW6_FNAME, .fw_hdr = { .chip = FW_HDR_CHIP_T6, .fw_ver = __cpu_to_be32(FW_VERSION(T6)), .intfver_nic = FW_INTFVER(T6, NIC), .intfver_vnic = FW_INTFVER(T6, VNIC), .intfver_ofld = FW_INTFVER(T6, OFLD), .intfver_ri = FW_INTFVER(T6, RI), .intfver_iscsipdu = FW_INTFVER(T6, ISCSIPDU), .intfver_iscsi = FW_INTFVER(T6, ISCSI), .intfver_fcoepdu = FW_INTFVER(T6, FCOEPDU), .intfver_fcoe = FW_INTFVER(T6, FCOE), }, } }; static struct fw_info *find_fw_info(int chip) { int i; for (i = 0; i < ARRAY_SIZE(fw_info_array); i++) { if (fw_info_array[i].chip == chip) return &fw_info_array[i]; } return NULL; } /* * Phase 0 of initialization: contact FW, obtain config, perform basic init. */ static int adap_init0(struct adapter *adap, int vpd_skip) { struct fw_caps_config_cmd caps_cmd; u32 params[7], val[7]; enum dev_state state; u32 v, port_vec; int reset = 1; int ret; /* Grab Firmware Device Log parameters as early as possible so we have * access to it for debugging, etc. */ ret = t4_init_devlog_params(adap); if (ret < 0) return ret; /* Contact FW, advertising Master capability */ ret = t4_fw_hello(adap, adap->mbox, adap->mbox, is_kdump_kernel() ? MASTER_MUST : MASTER_MAY, &state); if (ret < 0) { dev_err(adap->pdev_dev, "could not connect to FW, error %d\n", ret); return ret; } if (ret == adap->mbox) adap->flags |= CXGB4_MASTER_PF; /* * If we're the Master PF Driver and the device is uninitialized, * then let's consider upgrading the firmware ... (We always want * to check the firmware version number in order to A. get it for * later reporting and B. to warn if the currently loaded firmware * is excessively mismatched relative to the driver.) */ t4_get_version_info(adap); ret = t4_check_fw_version(adap); /* If firmware is too old (not supported by driver) force an update. */ if (ret) state = DEV_STATE_UNINIT; if ((adap->flags & CXGB4_MASTER_PF) && state != DEV_STATE_INIT) { struct fw_info *fw_info; struct fw_hdr *card_fw; const struct firmware *fw; const u8 *fw_data = NULL; unsigned int fw_size = 0; /* This is the firmware whose headers the driver was compiled * against */ fw_info = find_fw_info(CHELSIO_CHIP_VERSION(adap->params.chip)); if (fw_info == NULL) { dev_err(adap->pdev_dev, "unable to get firmware info for chip %d.\n", CHELSIO_CHIP_VERSION(adap->params.chip)); return -EINVAL; } /* allocate memory to read the header of the firmware on the * card */ card_fw = kvzalloc(sizeof(*card_fw), GFP_KERNEL); if (!card_fw) { ret = -ENOMEM; goto bye; } /* Get FW from from /lib/firmware/ */ ret = request_firmware(&fw, fw_info->fw_mod_name, adap->pdev_dev); if (ret < 0) { dev_err(adap->pdev_dev, "unable to load firmware image %s, error %d\n", fw_info->fw_mod_name, ret); } else { fw_data = fw->data; fw_size = fw->size; } /* upgrade FW logic */ ret = t4_prep_fw(adap, fw_info, fw_data, fw_size, card_fw, state, &reset); /* Cleaning up */ release_firmware(fw); kvfree(card_fw); if (ret < 0) goto bye; } /* If the firmware is initialized already, emit a simply note to that * effect. Otherwise, it's time to try initializing the adapter. */ if (state == DEV_STATE_INIT) { ret = adap_config_hma(adap); if (ret) dev_err(adap->pdev_dev, "HMA configuration failed with error %d\n", ret); dev_info(adap->pdev_dev, "Coming up as %s: "\ "Adapter already initialized\n", adap->flags & CXGB4_MASTER_PF ? "MASTER" : "SLAVE"); } else { dev_info(adap->pdev_dev, "Coming up as MASTER: "\ "Initializing adapter\n"); /* Find out whether we're dealing with a version of the * firmware which has configuration file support. */ params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_CF)); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val); /* If the firmware doesn't support Configuration Files, * return an error. */ if (ret < 0) { dev_err(adap->pdev_dev, "firmware doesn't support " "Firmware Configuration Files\n"); goto bye; } /* The firmware provides us with a memory buffer where we can * load a Configuration File from the host if we want to * override the Configuration File in flash. */ ret = adap_init0_config(adap, reset); if (ret == -ENOENT) { dev_err(adap->pdev_dev, "no Configuration File " "present on adapter.\n"); goto bye; } if (ret < 0) { dev_err(adap->pdev_dev, "could not initialize " "adapter, error %d\n", -ret); goto bye; } } /* Now that we've successfully configured and initialized the adapter * (or found it already initialized), we can ask the Firmware what * resources it has provisioned for us. */ ret = t4_get_pfres(adap); if (ret) { dev_err(adap->pdev_dev, "Unable to retrieve resource provisioning information\n"); goto bye; } /* Grab VPD parameters. This should be done after we establish a * connection to the firmware since some of the VPD parameters * (notably the Core Clock frequency) are retrieved via requests to * the firmware. On the other hand, we need these fairly early on * so we do this right after getting ahold of the firmware. * * We need to do this after initializing the adapter because someone * could have FLASHed a new VPD which won't be read by the firmware * until we do the RESET ... */ if (!vpd_skip) { ret = t4_get_vpd_params(adap, &adap->params.vpd); if (ret < 0) goto bye; } /* Find out what ports are available to us. Note that we need to do * this before calling adap_init0_no_config() since it needs nports * and portvec ... */ v = FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_PORTVEC); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, &v, &port_vec); if (ret < 0) goto bye; adap->params.nports = hweight32(port_vec); adap->params.portvec = port_vec; /* Give the SGE code a chance to pull in anything that it needs ... * Note that this must be called after we retrieve our VPD parameters * in order to know how to convert core ticks to seconds, etc. */ ret = t4_sge_init(adap); if (ret < 0) goto bye; /* Grab the SGE Doorbell Queue Timer values. If successful, that * indicates that the Firmware and Hardware support this. */ params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DBQ_TIMERTICK)); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val); if (!ret) { adap->sge.dbqtimer_tick = val[0]; ret = t4_read_sge_dbqtimers(adap, ARRAY_SIZE(adap->sge.dbqtimer_val), adap->sge.dbqtimer_val); } if (!ret) adap->flags |= CXGB4_SGE_DBQ_TIMER; if (is_bypass_device(adap->pdev->device)) adap->params.bypass = 1; /* * Grab some of our basic fundamental operating parameters. */ params[0] = FW_PARAM_PFVF(EQ_START); params[1] = FW_PARAM_PFVF(L2T_START); params[2] = FW_PARAM_PFVF(L2T_END); params[3] = FW_PARAM_PFVF(FILTER_START); params[4] = FW_PARAM_PFVF(FILTER_END); params[5] = FW_PARAM_PFVF(IQFLINT_START); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 6, params, val); if (ret < 0) goto bye; adap->sge.egr_start = val[0]; adap->l2t_start = val[1]; adap->l2t_end = val[2]; adap->tids.ftid_base = val[3]; adap->tids.nftids = val[4] - val[3] + 1; adap->sge.ingr_start = val[5]; if (CHELSIO_CHIP_VERSION(adap->params.chip) > CHELSIO_T5) { params[0] = FW_PARAM_PFVF(HPFILTER_START); params[1] = FW_PARAM_PFVF(HPFILTER_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (ret < 0) goto bye; adap->tids.hpftid_base = val[0]; adap->tids.nhpftids = val[1] - val[0] + 1; /* Read the raw mps entries. In T6, the last 2 tcam entries * are reserved for raw mac addresses (rawf = 2, one per port). */ params[0] = FW_PARAM_PFVF(RAWF_START); params[1] = FW_PARAM_PFVF(RAWF_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (ret == 0) { adap->rawf_start = val[0]; adap->rawf_cnt = val[1] - val[0] + 1; } adap->tids.tid_base = t4_read_reg(adap, LE_DB_ACTIVE_TABLE_START_INDEX_A); } /* qids (ingress/egress) returned from firmware can be anywhere * in the range from EQ(IQFLINT)_START to EQ(IQFLINT)_END. * Hence driver needs to allocate memory for this range to * store the queue info. Get the highest IQFLINT/EQ index returned * in FW_EQ_*_CMD.alloc command. */ params[0] = FW_PARAM_PFVF(EQ_END); params[1] = FW_PARAM_PFVF(IQFLINT_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (ret < 0) goto bye; adap->sge.egr_sz = val[0] - adap->sge.egr_start + 1; adap->sge.ingr_sz = val[1] - adap->sge.ingr_start + 1; adap->sge.egr_map = kcalloc(adap->sge.egr_sz, sizeof(*adap->sge.egr_map), GFP_KERNEL); if (!adap->sge.egr_map) { ret = -ENOMEM; goto bye; } adap->sge.ingr_map = kcalloc(adap->sge.ingr_sz, sizeof(*adap->sge.ingr_map), GFP_KERNEL); if (!adap->sge.ingr_map) { ret = -ENOMEM; goto bye; } /* Allocate the memory for the vaious egress queue bitmaps * ie starving_fl, txq_maperr and blocked_fl. */ adap->sge.starving_fl = kcalloc(BITS_TO_LONGS(adap->sge.egr_sz), sizeof(long), GFP_KERNEL); if (!adap->sge.starving_fl) { ret = -ENOMEM; goto bye; } adap->sge.txq_maperr = kcalloc(BITS_TO_LONGS(adap->sge.egr_sz), sizeof(long), GFP_KERNEL); if (!adap->sge.txq_maperr) { ret = -ENOMEM; goto bye; } #ifdef CONFIG_DEBUG_FS adap->sge.blocked_fl = kcalloc(BITS_TO_LONGS(adap->sge.egr_sz), sizeof(long), GFP_KERNEL); if (!adap->sge.blocked_fl) { ret = -ENOMEM; goto bye; } #endif params[0] = FW_PARAM_PFVF(CLIP_START); params[1] = FW_PARAM_PFVF(CLIP_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (ret < 0) goto bye; adap->clipt_start = val[0]; adap->clipt_end = val[1]; /* Get the supported number of traffic classes */ params[0] = FW_PARAM_DEV(NUM_TM_CLASS); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val); if (ret < 0) { /* We couldn't retrieve the number of Traffic Classes * supported by the hardware/firmware. So we hard * code it here. */ adap->params.nsched_cls = is_t4(adap->params.chip) ? 15 : 16; } else { adap->params.nsched_cls = val[0]; } /* query params related to active filter region */ params[0] = FW_PARAM_PFVF(ACTIVE_FILTER_START); params[1] = FW_PARAM_PFVF(ACTIVE_FILTER_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); /* If Active filter size is set we enable establishing * offload connection through firmware work request */ if ((val[0] != val[1]) && (ret >= 0)) { adap->flags |= CXGB4_FW_OFLD_CONN; adap->tids.aftid_base = val[0]; adap->tids.aftid_end = val[1]; } /* If we're running on newer firmware, let it know that we're * prepared to deal with encapsulated CPL messages. Older * firmware won't understand this and we'll just get * unencapsulated messages ... */ params[0] = FW_PARAM_PFVF(CPLFW4MSG_ENCAP); val[0] = 1; (void)t4_set_params(adap, adap->mbox, adap->pf, 0, 1, params, val); /* * Find out whether we're allowed to use the T5+ ULPTX MEMWRITE DSGL * capability. Earlier versions of the firmware didn't have the * ULPTX_MEMWRITE_DSGL so we'll interpret a query failure as no * permission to use ULPTX MEMWRITE DSGL. */ if (is_t4(adap->params.chip)) { adap->params.ulptx_memwrite_dsgl = false; } else { params[0] = FW_PARAM_DEV(ULPTX_MEMWRITE_DSGL); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val); adap->params.ulptx_memwrite_dsgl = (ret == 0 && val[0] != 0); } /* See if FW supports FW_RI_FR_NSMR_TPTE_WR work request */ params[0] = FW_PARAM_DEV(RI_FR_NSMR_TPTE_WR); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val); adap->params.fr_nsmr_tpte_wr_support = (ret == 0 && val[0] != 0); /* See if FW supports FW_FILTER2 work request */ if (is_t4(adap->params.chip)) { adap->params.filter2_wr_support = 0; } else { params[0] = FW_PARAM_DEV(FILTER2_WR); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val); adap->params.filter2_wr_support = (ret == 0 && val[0] != 0); } /* Check if FW supports returning vin and smt index. * If this is not supported, driver will interpret * these values from viid. */ params[0] = FW_PARAM_DEV(OPAQUE_VIID_SMT_EXTN); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val); adap->params.viid_smt_extn_support = (ret == 0 && val[0] != 0); /* * Get device capabilities so we can determine what resources we need * to manage. */ memset(&caps_cmd, 0, sizeof(caps_cmd)); caps_cmd.op_to_write = htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) | FW_CMD_REQUEST_F | FW_CMD_READ_F); caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd)); ret = t4_wr_mbox(adap, adap->mbox, &caps_cmd, sizeof(caps_cmd), &caps_cmd); if (ret < 0) goto bye; /* hash filter has some mandatory register settings to be tested and for * that it needs to test whether offload is enabled or not, hence * checking and setting it here. */ if (caps_cmd.ofldcaps) adap->params.offload = 1; if (caps_cmd.ofldcaps || (caps_cmd.niccaps & htons(FW_CAPS_CONFIG_NIC_HASHFILTER)) || (caps_cmd.niccaps & htons(FW_CAPS_CONFIG_NIC_ETHOFLD))) { /* query offload-related parameters */ params[0] = FW_PARAM_DEV(NTID); params[1] = FW_PARAM_PFVF(SERVER_START); params[2] = FW_PARAM_PFVF(SERVER_END); params[3] = FW_PARAM_PFVF(TDDP_START); params[4] = FW_PARAM_PFVF(TDDP_END); params[5] = FW_PARAM_DEV(FLOWC_BUFFIFO_SZ); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 6, params, val); if (ret < 0) goto bye; adap->tids.ntids = val[0]; adap->tids.natids = min(adap->tids.ntids / 2, MAX_ATIDS); adap->tids.stid_base = val[1]; adap->tids.nstids = val[2] - val[1] + 1; /* * Setup server filter region. Divide the available filter * region into two parts. Regular filters get 1/3rd and server * filters get 2/3rd part. This is only enabled if workarond * path is enabled. * 1. For regular filters. * 2. Server filter: This are special filters which are used * to redirect SYN packets to offload queue. */ if (adap->flags & CXGB4_FW_OFLD_CONN && !is_bypass(adap)) { adap->tids.sftid_base = adap->tids.ftid_base + DIV_ROUND_UP(adap->tids.nftids, 3); adap->tids.nsftids = adap->tids.nftids - DIV_ROUND_UP(adap->tids.nftids, 3); adap->tids.nftids = adap->tids.sftid_base - adap->tids.ftid_base; } adap->vres.ddp.start = val[3]; adap->vres.ddp.size = val[4] - val[3] + 1; adap->params.ofldq_wr_cred = val[5]; if (caps_cmd.niccaps & htons(FW_CAPS_CONFIG_NIC_HASHFILTER)) { init_hash_filter(adap); } else { adap->num_ofld_uld += 1; } if (caps_cmd.niccaps & htons(FW_CAPS_CONFIG_NIC_ETHOFLD)) { params[0] = FW_PARAM_PFVF(ETHOFLD_START); params[1] = FW_PARAM_PFVF(ETHOFLD_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (!ret) { adap->tids.eotid_base = val[0]; adap->tids.neotids = min_t(u32, MAX_ATIDS, val[1] - val[0] + 1); adap->params.ethofld = 1; } } } if (caps_cmd.rdmacaps) { params[0] = FW_PARAM_PFVF(STAG_START); params[1] = FW_PARAM_PFVF(STAG_END); params[2] = FW_PARAM_PFVF(RQ_START); params[3] = FW_PARAM_PFVF(RQ_END); params[4] = FW_PARAM_PFVF(PBL_START); params[5] = FW_PARAM_PFVF(PBL_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 6, params, val); if (ret < 0) goto bye; adap->vres.stag.start = val[0]; adap->vres.stag.size = val[1] - val[0] + 1; adap->vres.rq.start = val[2]; adap->vres.rq.size = val[3] - val[2] + 1; adap->vres.pbl.start = val[4]; adap->vres.pbl.size = val[5] - val[4] + 1; params[0] = FW_PARAM_PFVF(SRQ_START); params[1] = FW_PARAM_PFVF(SRQ_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (!ret) { adap->vres.srq.start = val[0]; adap->vres.srq.size = val[1] - val[0] + 1; } if (adap->vres.srq.size) { adap->srq = t4_init_srq(adap->vres.srq.size); if (!adap->srq) dev_warn(&adap->pdev->dev, "could not allocate SRQ, continuing\n"); } params[0] = FW_PARAM_PFVF(SQRQ_START); params[1] = FW_PARAM_PFVF(SQRQ_END); params[2] = FW_PARAM_PFVF(CQ_START); params[3] = FW_PARAM_PFVF(CQ_END); params[4] = FW_PARAM_PFVF(OCQ_START); params[5] = FW_PARAM_PFVF(OCQ_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 6, params, val); if (ret < 0) goto bye; adap->vres.qp.start = val[0]; adap->vres.qp.size = val[1] - val[0] + 1; adap->vres.cq.start = val[2]; adap->vres.cq.size = val[3] - val[2] + 1; adap->vres.ocq.start = val[4]; adap->vres.ocq.size = val[5] - val[4] + 1; params[0] = FW_PARAM_DEV(MAXORDIRD_QP); params[1] = FW_PARAM_DEV(MAXIRD_ADAPTER); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (ret < 0) { adap->params.max_ordird_qp = 8; adap->params.max_ird_adapter = 32 * adap->tids.ntids; ret = 0; } else { adap->params.max_ordird_qp = val[0]; adap->params.max_ird_adapter = val[1]; } dev_info(adap->pdev_dev, "max_ordird_qp %d max_ird_adapter %d\n", adap->params.max_ordird_qp, adap->params.max_ird_adapter); /* Enable write_with_immediate if FW supports it */ params[0] = FW_PARAM_DEV(RDMA_WRITE_WITH_IMM); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val); adap->params.write_w_imm_support = (ret == 0 && val[0] != 0); /* Enable write_cmpl if FW supports it */ params[0] = FW_PARAM_DEV(RI_WRITE_CMPL_WR); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val); adap->params.write_cmpl_support = (ret == 0 && val[0] != 0); adap->num_ofld_uld += 2; } if (caps_cmd.iscsicaps) { params[0] = FW_PARAM_PFVF(ISCSI_START); params[1] = FW_PARAM_PFVF(ISCSI_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (ret < 0) goto bye; adap->vres.iscsi.start = val[0]; adap->vres.iscsi.size = val[1] - val[0] + 1; if (is_t6(adap->params.chip)) { params[0] = FW_PARAM_PFVF(PPOD_EDRAM_START); params[1] = FW_PARAM_PFVF(PPOD_EDRAM_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (!ret) { adap->vres.ppod_edram.start = val[0]; adap->vres.ppod_edram.size = val[1] - val[0] + 1; dev_info(adap->pdev_dev, "ppod edram start 0x%x end 0x%x size 0x%x\n", val[0], val[1], adap->vres.ppod_edram.size); } } /* LIO target and cxgb4i initiaitor */ adap->num_ofld_uld += 2; } if (caps_cmd.cryptocaps) { if (ntohs(caps_cmd.cryptocaps) & FW_CAPS_CONFIG_CRYPTO_LOOKASIDE) { params[0] = FW_PARAM_PFVF(NCRYPTO_LOOKASIDE); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (ret < 0) { if (ret != -EINVAL) goto bye; } else { adap->vres.ncrypto_fc = val[0]; } adap->num_ofld_uld += 1; } if (ntohs(caps_cmd.cryptocaps) & FW_CAPS_CONFIG_TLS_INLINE) { params[0] = FW_PARAM_PFVF(TLS_START); params[1] = FW_PARAM_PFVF(TLS_END); ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val); if (ret < 0) goto bye; adap->vres.key.start = val[0]; adap->vres.key.size = val[1] - val[0] + 1; adap->num_uld += 1; } adap->params.crypto = ntohs(caps_cmd.cryptocaps); } /* The MTU/MSS Table is initialized by now, so load their values. If * we're initializing the adapter, then we'll make any modifications * we want to the MTU/MSS Table and also initialize the congestion * parameters. */ t4_read_mtu_tbl(adap, adap->params.mtus, NULL); if (state != DEV_STATE_INIT) { int i; /* The default MTU Table contains values 1492 and 1500. * However, for TCP, it's better to have two values which are * a multiple of 8 +/- 4 bytes apart near this popular MTU. * This allows us to have a TCP Data Payload which is a * multiple of 8 regardless of what combination of TCP Options * are in use (always a multiple of 4 bytes) which is * important for performance reasons. For instance, if no * options are in use, then we have a 20-byte IP header and a * 20-byte TCP header. In this case, a 1500-byte MSS would * result in a TCP Data Payload of 1500 - 40 == 1460 bytes * which is not a multiple of 8. So using an MSS of 1488 in * this case results in a TCP Data Payload of 1448 bytes which * is a multiple of 8. On the other hand, if 12-byte TCP Time * Stamps have been negotiated, then an MTU of 1500 bytes * results in a TCP Data Payload of 1448 bytes which, as * above, is a multiple of 8 bytes ... */ for (i = 0; i < NMTUS; i++) if (adap->params.mtus[i] == 1492) { adap->params.mtus[i] = 1488; break; } t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd, adap->params.b_wnd); } t4_init_sge_params(adap); adap->flags |= CXGB4_FW_OK; t4_init_tp_params(adap, true); return 0; /* * Something bad happened. If a command timed out or failed with EIO * FW does not operate within its spec or something catastrophic * happened to HW/FW, stop issuing commands. */ bye: adap_free_hma_mem(adap); kfree(adap->sge.egr_map); kfree(adap->sge.ingr_map); kfree(adap->sge.starving_fl); kfree(adap->sge.txq_maperr); #ifdef CONFIG_DEBUG_FS kfree(adap->sge.blocked_fl); #endif if (ret != -ETIMEDOUT && ret != -EIO) t4_fw_bye(adap, adap->mbox); return ret; } /* EEH callbacks */ static pci_ers_result_t eeh_err_detected(struct pci_dev *pdev, pci_channel_state_t state) { int i; struct adapter *adap = pci_get_drvdata(pdev); if (!adap) goto out; rtnl_lock(); adap->flags &= ~CXGB4_FW_OK; notify_ulds(adap, CXGB4_STATE_START_RECOVERY); spin_lock(&adap->stats_lock); for_each_port(adap, i) { struct net_device *dev = adap->port[i]; if (dev) { netif_device_detach(dev); netif_carrier_off(dev); } } spin_unlock(&adap->stats_lock); disable_interrupts(adap); if (adap->flags & CXGB4_FULL_INIT_DONE) cxgb_down(adap); rtnl_unlock(); if ((adap->flags & CXGB4_DEV_ENABLED)) { pci_disable_device(pdev); adap->flags &= ~CXGB4_DEV_ENABLED; } out: return state == pci_channel_io_perm_failure ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET; } static pci_ers_result_t eeh_slot_reset(struct pci_dev *pdev) { int i, ret; struct fw_caps_config_cmd c; struct adapter *adap = pci_get_drvdata(pdev); if (!adap) { pci_restore_state(pdev); pci_save_state(pdev); return PCI_ERS_RESULT_RECOVERED; } if (!(adap->flags & CXGB4_DEV_ENABLED)) { if (pci_enable_device(pdev)) { dev_err(&pdev->dev, "Cannot reenable PCI " "device after reset\n"); return PCI_ERS_RESULT_DISCONNECT; } adap->flags |= CXGB4_DEV_ENABLED; } pci_set_master(pdev); pci_restore_state(pdev); pci_save_state(pdev); if (t4_wait_dev_ready(adap->regs) < 0) return PCI_ERS_RESULT_DISCONNECT; if (t4_fw_hello(adap, adap->mbox, adap->pf, MASTER_MUST, NULL) < 0) return PCI_ERS_RESULT_DISCONNECT; adap->flags |= CXGB4_FW_OK; if (adap_init1(adap, &c)) return PCI_ERS_RESULT_DISCONNECT; for_each_port(adap, i) { struct port_info *pi = adap2pinfo(adap, i); u8 vivld = 0, vin = 0; ret = t4_alloc_vi(adap, adap->mbox, pi->tx_chan, adap->pf, 0, 1, NULL, NULL, &vivld, &vin); if (ret < 0) return PCI_ERS_RESULT_DISCONNECT; pi->viid = ret; pi->xact_addr_filt = -1; /* If fw supports returning the VIN as part of FW_VI_CMD, * save the returned values. */ if (adap->params.viid_smt_extn_support) { pi->vivld = vivld; pi->vin = vin; } else { /* Retrieve the values from VIID */ pi->vivld = FW_VIID_VIVLD_G(pi->viid); pi->vin = FW_VIID_VIN_G(pi->viid); } } t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd, adap->params.b_wnd); setup_memwin(adap); if (cxgb_up(adap)) return PCI_ERS_RESULT_DISCONNECT; return PCI_ERS_RESULT_RECOVERED; } static void eeh_resume(struct pci_dev *pdev) { int i; struct adapter *adap = pci_get_drvdata(pdev); if (!adap) return; rtnl_lock(); for_each_port(adap, i) { struct net_device *dev = adap->port[i]; if (dev) { if (netif_running(dev)) { link_start(dev); cxgb_set_rxmode(dev); } netif_device_attach(dev); } } rtnl_unlock(); } static void eeh_reset_prepare(struct pci_dev *pdev) { struct adapter *adapter = pci_get_drvdata(pdev); int i; if (adapter->pf != 4) return; adapter->flags &= ~CXGB4_FW_OK; notify_ulds(adapter, CXGB4_STATE_DOWN); for_each_port(adapter, i) if (adapter->port[i]->reg_state == NETREG_REGISTERED) cxgb_close(adapter->port[i]); disable_interrupts(adapter); cxgb4_free_mps_ref_entries(adapter); adap_free_hma_mem(adapter); if (adapter->flags & CXGB4_FULL_INIT_DONE) cxgb_down(adapter); } static void eeh_reset_done(struct pci_dev *pdev) { struct adapter *adapter = pci_get_drvdata(pdev); int err, i; if (adapter->pf != 4) return; err = t4_wait_dev_ready(adapter->regs); if (err < 0) { dev_err(adapter->pdev_dev, "Device not ready, err %d", err); return; } setup_memwin(adapter); err = adap_init0(adapter, 1); if (err) { dev_err(adapter->pdev_dev, "Adapter init failed, err %d", err); return; } setup_memwin_rdma(adapter); if (adapter->flags & CXGB4_FW_OK) { err = t4_port_init(adapter, adapter->pf, adapter->pf, 0); if (err) { dev_err(adapter->pdev_dev, "Port init failed, err %d", err); return; } } err = cfg_queues(adapter); if (err) { dev_err(adapter->pdev_dev, "Config queues failed, err %d", err); return; } cxgb4_init_mps_ref_entries(adapter); err = setup_fw_sge_queues(adapter); if (err) { dev_err(adapter->pdev_dev, "FW sge queue allocation failed, err %d", err); return; } for_each_port(adapter, i) if (adapter->port[i]->reg_state == NETREG_REGISTERED) cxgb_open(adapter->port[i]); } static const struct pci_error_handlers cxgb4_eeh = { .error_detected = eeh_err_detected, .slot_reset = eeh_slot_reset, .resume = eeh_resume, .reset_prepare = eeh_reset_prepare, .reset_done = eeh_reset_done, }; /* Return true if the Link Configuration supports "High Speeds" (those greater * than 1Gb/s). */ static inline bool is_x_10g_port(const struct link_config *lc) { unsigned int speeds, high_speeds; speeds = FW_PORT_CAP32_SPEED_V(FW_PORT_CAP32_SPEED_G(lc->pcaps)); high_speeds = speeds & ~(FW_PORT_CAP32_SPEED_100M | FW_PORT_CAP32_SPEED_1G); return high_speeds != 0; } /* Perform default configuration of DMA queues depending on the number and type * of ports we found and the number of available CPUs. Most settings can be * modified by the admin prior to actual use. */ static int cfg_queues(struct adapter *adap) { u32 avail_qsets, avail_eth_qsets, avail_uld_qsets; u32 i, n10g = 0, qidx = 0, n1g = 0; u32 ncpus = num_online_cpus(); u32 niqflint, neq, num_ulds; struct sge *s = &adap->sge; u32 q10g = 0, q1g; /* Reduce memory usage in kdump environment, disable all offload. */ if (is_kdump_kernel() || (is_uld(adap) && t4_uld_mem_alloc(adap))) { adap->params.offload = 0; adap->params.crypto = 0; adap->params.ethofld = 0; } /* Calculate the number of Ethernet Queue Sets available based on * resources provisioned for us. We always have an Asynchronous * Firmware Event Ingress Queue. If we're operating in MSI or Legacy * IRQ Pin Interrupt mode, then we'll also have a Forwarded Interrupt * Ingress Queue. Meanwhile, we need two Egress Queues for each * Queue Set: one for the Free List and one for the Ethernet TX Queue. * * Note that we should also take into account all of the various * Offload Queues. But, in any situation where we're operating in * a Resource Constrained Provisioning environment, doing any Offload * at all is problematic ... */ niqflint = adap->params.pfres.niqflint - 1; if (!(adap->flags & CXGB4_USING_MSIX)) niqflint--; neq = adap->params.pfres.neq / 2; avail_qsets = min(niqflint, neq); if (avail_qsets < adap->params.nports) { dev_err(adap->pdev_dev, "avail_eth_qsets=%d < nports=%d\n", avail_qsets, adap->params.nports); return -ENOMEM; } /* Count the number of 10Gb/s or better ports */ for_each_port(adap, i) n10g += is_x_10g_port(&adap2pinfo(adap, i)->link_cfg); avail_eth_qsets = min_t(u32, avail_qsets, MAX_ETH_QSETS); /* We default to 1 queue per non-10G port and up to # of cores queues * per 10G port. */ if (n10g) q10g = (avail_eth_qsets - (adap->params.nports - n10g)) / n10g; n1g = adap->params.nports - n10g; #ifdef CONFIG_CHELSIO_T4_DCB /* For Data Center Bridging support we need to be able to support up * to 8 Traffic Priorities; each of which will be assigned to its * own TX Queue in order to prevent Head-Of-Line Blocking. */ q1g = 8; if (adap->params.nports * 8 > avail_eth_qsets) { dev_err(adap->pdev_dev, "DCB avail_eth_qsets=%d < %d!\n", avail_eth_qsets, adap->params.nports * 8); return -ENOMEM; } if (adap->params.nports * ncpus < avail_eth_qsets) q10g = max(8U, ncpus); else q10g = max(8U, q10g); while ((q10g * n10g) > (avail_eth_qsets - n1g * q1g)) q10g--; #else /* !CONFIG_CHELSIO_T4_DCB */ q1g = 1; q10g = min(q10g, ncpus); #endif /* !CONFIG_CHELSIO_T4_DCB */ if (is_kdump_kernel()) { q10g = 1; q1g = 1; } for_each_port(adap, i) { struct port_info *pi = adap2pinfo(adap, i); pi->first_qset = qidx; pi->nqsets = is_x_10g_port(&pi->link_cfg) ? q10g : q1g; qidx += pi->nqsets; } s->ethqsets = qidx; s->max_ethqsets = qidx; /* MSI-X may lower it later */ avail_qsets -= qidx; if (is_uld(adap)) { /* For offload we use 1 queue/channel if all ports are up to 1G, * otherwise we divide all available queues amongst the channels * capped by the number of available cores. */ num_ulds = adap->num_uld + adap->num_ofld_uld; i = min_t(u32, MAX_OFLD_QSETS, ncpus); avail_uld_qsets = roundup(i, adap->params.nports); if (avail_qsets < num_ulds * adap->params.nports) { adap->params.offload = 0; adap->params.crypto = 0; s->ofldqsets = 0; } else if (avail_qsets < num_ulds * avail_uld_qsets || !n10g) { s->ofldqsets = adap->params.nports; } else { s->ofldqsets = avail_uld_qsets; } avail_qsets -= num_ulds * s->ofldqsets; } /* ETHOFLD Queues used for QoS offload should follow same * allocation scheme as normal Ethernet Queues. */ if (is_ethofld(adap)) { if (avail_qsets < s->max_ethqsets) { adap->params.ethofld = 0; s->eoqsets = 0; } else { s->eoqsets = s->max_ethqsets; } avail_qsets -= s->eoqsets; } for (i = 0; i < ARRAY_SIZE(s->ethrxq); i++) { struct sge_eth_rxq *r = &s->ethrxq[i]; init_rspq(adap, &r->rspq, 5, 10, 1024, 64); r->fl.size = 72; } for (i = 0; i < ARRAY_SIZE(s->ethtxq); i++) s->ethtxq[i].q.size = 1024; for (i = 0; i < ARRAY_SIZE(s->ctrlq); i++) s->ctrlq[i].q.size = 512; if (!is_t4(adap->params.chip)) s->ptptxq.q.size = 8; init_rspq(adap, &s->fw_evtq, 0, 1, 1024, 64); init_rspq(adap, &s->intrq, 0, 1, 512, 64); return 0; } /* * Reduce the number of Ethernet queues across all ports to at most n. * n provides at least one queue per port. */ static void reduce_ethqs(struct adapter *adap, int n) { int i; struct port_info *pi; while (n < adap->sge.ethqsets) for_each_port(adap, i) { pi = adap2pinfo(adap, i); if (pi->nqsets > 1) { pi->nqsets--; adap->sge.ethqsets--; if (adap->sge.ethqsets <= n) break; } } n = 0; for_each_port(adap, i) { pi = adap2pinfo(adap, i); pi->first_qset = n; n += pi->nqsets; } } static int alloc_msix_info(struct adapter *adap, u32 num_vec) { struct msix_info *msix_info; msix_info = kcalloc(num_vec, sizeof(*msix_info), GFP_KERNEL); if (!msix_info) return -ENOMEM; adap->msix_bmap.msix_bmap = kcalloc(BITS_TO_LONGS(num_vec), sizeof(long), GFP_KERNEL); if (!adap->msix_bmap.msix_bmap) { kfree(msix_info); return -ENOMEM; } spin_lock_init(&adap->msix_bmap.lock); adap->msix_bmap.mapsize = num_vec; adap->msix_info = msix_info; return 0; } static void free_msix_info(struct adapter *adap) { kfree(adap->msix_bmap.msix_bmap); kfree(adap->msix_info); } int cxgb4_get_msix_idx_from_bmap(struct adapter *adap) { struct msix_bmap *bmap = &adap->msix_bmap; unsigned int msix_idx; unsigned long flags; spin_lock_irqsave(&bmap->lock, flags); msix_idx = find_first_zero_bit(bmap->msix_bmap, bmap->mapsize); if (msix_idx < bmap->mapsize) { __set_bit(msix_idx, bmap->msix_bmap); } else { spin_unlock_irqrestore(&bmap->lock, flags); return -ENOSPC; } spin_unlock_irqrestore(&bmap->lock, flags); return msix_idx; } void cxgb4_free_msix_idx_in_bmap(struct adapter *adap, unsigned int msix_idx) { struct msix_bmap *bmap = &adap->msix_bmap; unsigned long flags; spin_lock_irqsave(&bmap->lock, flags); __clear_bit(msix_idx, bmap->msix_bmap); spin_unlock_irqrestore(&bmap->lock, flags); } /* 2 MSI-X vectors needed for the FW queue and non-data interrupts */ #define EXTRA_VECS 2 static int enable_msix(struct adapter *adap) { u32 eth_need, uld_need = 0, ethofld_need = 0; u32 ethqsets = 0, ofldqsets = 0, eoqsets = 0; u8 num_uld = 0, nchan = adap->params.nports; u32 i, want, need, num_vec; struct sge *s = &adap->sge; struct msix_entry *entries; struct port_info *pi; int allocated, ret; want = s->max_ethqsets; #ifdef CONFIG_CHELSIO_T4_DCB /* For Data Center Bridging we need 8 Ethernet TX Priority Queues for * each port. */ need = 8 * nchan; #else need = nchan; #endif eth_need = need; if (is_uld(adap)) { num_uld = adap->num_ofld_uld + adap->num_uld; want += num_uld * s->ofldqsets; uld_need = num_uld * nchan; need += uld_need; } if (is_ethofld(adap)) { want += s->eoqsets; ethofld_need = eth_need; need += ethofld_need; } want += EXTRA_VECS; need += EXTRA_VECS; entries = kmalloc_array(want, sizeof(*entries), GFP_KERNEL); if (!entries) return -ENOMEM; for (i = 0; i < want; i++) entries[i].entry = i; allocated = pci_enable_msix_range(adap->pdev, entries, need, want); if (allocated < 0) { /* Disable offload and attempt to get vectors for NIC * only mode. */ want = s->max_ethqsets + EXTRA_VECS; need = eth_need + EXTRA_VECS; allocated = pci_enable_msix_range(adap->pdev, entries, need, want); if (allocated < 0) { dev_info(adap->pdev_dev, "Disabling MSI-X due to insufficient MSI-X vectors\n"); ret = allocated; goto out_free; } dev_info(adap->pdev_dev, "Disabling offload due to insufficient MSI-X vectors\n"); adap->params.offload = 0; adap->params.crypto = 0; adap->params.ethofld = 0; s->ofldqsets = 0; s->eoqsets = 0; uld_need = 0; ethofld_need = 0; } num_vec = allocated; if (num_vec < want) { /* Distribute available vectors to the various queue groups. * Every group gets its minimum requirement and NIC gets top * priority for leftovers. */ ethqsets = eth_need; if (is_uld(adap)) ofldqsets = nchan; if (is_ethofld(adap)) eoqsets = ethofld_need; num_vec -= need; while (num_vec) { if (num_vec < eth_need + ethofld_need || ethqsets > s->max_ethqsets) break; for_each_port(adap, i) { pi = adap2pinfo(adap, i); if (pi->nqsets < 2) continue; ethqsets++; num_vec--; if (ethofld_need) { eoqsets++; num_vec--; } } } if (is_uld(adap)) { while (num_vec) { if (num_vec < uld_need || ofldqsets > s->ofldqsets) break; ofldqsets++; num_vec -= uld_need; } } } else { ethqsets = s->max_ethqsets; if (is_uld(adap)) ofldqsets = s->ofldqsets; if (is_ethofld(adap)) eoqsets = s->eoqsets; } if (ethqsets < s->max_ethqsets) { s->max_ethqsets = ethqsets; reduce_ethqs(adap, ethqsets); } if (is_uld(adap)) { s->ofldqsets = ofldqsets; s->nqs_per_uld = s->ofldqsets; } if (is_ethofld(adap)) s->eoqsets = eoqsets; /* map for msix */ ret = alloc_msix_info(adap, allocated); if (ret) goto out_disable_msix; for (i = 0; i < allocated; i++) { adap->msix_info[i].vec = entries[i].vector; adap->msix_info[i].idx = i; } dev_info(adap->pdev_dev, "%d MSI-X vectors allocated, nic %d eoqsets %d per uld %d\n", allocated, s->max_ethqsets, s->eoqsets, s->nqs_per_uld); kfree(entries); return 0; out_disable_msix: pci_disable_msix(adap->pdev); out_free: kfree(entries); return ret; } #undef EXTRA_VECS static int init_rss(struct adapter *adap) { unsigned int i; int err; err = t4_init_rss_mode(adap, adap->mbox); if (err) return err; for_each_port(adap, i) { struct port_info *pi = adap2pinfo(adap, i); pi->rss = kcalloc(pi->rss_size, sizeof(u16), GFP_KERNEL); if (!pi->rss) return -ENOMEM; } return 0; } /* Dump basic information about the adapter */ static void print_adapter_info(struct adapter *adapter) { /* Hardware/Firmware/etc. Version/Revision IDs */ t4_dump_version_info(adapter); /* Software/Hardware configuration */ dev_info(adapter->pdev_dev, "Configuration: %sNIC %s, %s capable\n", is_offload(adapter) ? "R" : "", ((adapter->flags & CXGB4_USING_MSIX) ? "MSI-X" : (adapter->flags & CXGB4_USING_MSI) ? "MSI" : ""), is_offload(adapter) ? "Offload" : "non-Offload"); } static void print_port_info(const struct net_device *dev) { char buf[80]; char *bufp = buf; const struct port_info *pi = netdev_priv(dev); const struct adapter *adap = pi->adapter; if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_100M) bufp += sprintf(bufp, "100M/"); if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_1G) bufp += sprintf(bufp, "1G/"); if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_10G) bufp += sprintf(bufp, "10G/"); if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_25G) bufp += sprintf(bufp, "25G/"); if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_40G) bufp += sprintf(bufp, "40G/"); if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_50G) bufp += sprintf(bufp, "50G/"); if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_100G) bufp += sprintf(bufp, "100G/"); if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_200G) bufp += sprintf(bufp, "200G/"); if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_400G) bufp += sprintf(bufp, "400G/"); if (bufp != buf) --bufp; sprintf(bufp, "BASE-%s", t4_get_port_type_description(pi->port_type)); netdev_info(dev, "%s: Chelsio %s (%s) %s\n", dev->name, adap->params.vpd.id, adap->name, buf); } /* * Free the following resources: * - memory used for tables * - MSI/MSI-X * - net devices * - resources FW is holding for us */ static void free_some_resources(struct adapter *adapter) { unsigned int i; kvfree(adapter->smt); kvfree(adapter->l2t); kvfree(adapter->srq); t4_cleanup_sched(adapter); kvfree(adapter->tids.tid_tab); cxgb4_cleanup_tc_matchall(adapter); cxgb4_cleanup_tc_mqprio(adapter); cxgb4_cleanup_tc_flower(adapter); cxgb4_cleanup_tc_u32(adapter); kfree(adapter->sge.egr_map); kfree(adapter->sge.ingr_map); kfree(adapter->sge.starving_fl); kfree(adapter->sge.txq_maperr); #ifdef CONFIG_DEBUG_FS kfree(adapter->sge.blocked_fl); #endif disable_msi(adapter); for_each_port(adapter, i) if (adapter->port[i]) { struct port_info *pi = adap2pinfo(adapter, i); if (pi->viid != 0) t4_free_vi(adapter, adapter->mbox, adapter->pf, 0, pi->viid); kfree(adap2pinfo(adapter, i)->rss); free_netdev(adapter->port[i]); } if (adapter->flags & CXGB4_FW_OK) t4_fw_bye(adapter, adapter->pf); } #define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN | \ NETIF_F_GSO_UDP_L4) #define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \ NETIF_F_GRO | NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA) #define SEGMENT_SIZE 128 static int t4_get_chip_type(struct adapter *adap, int ver) { u32 pl_rev = REV_G(t4_read_reg(adap, PL_REV_A)); switch (ver) { case CHELSIO_T4: return CHELSIO_CHIP_CODE(CHELSIO_T4, pl_rev); case CHELSIO_T5: return CHELSIO_CHIP_CODE(CHELSIO_T5, pl_rev); case CHELSIO_T6: return CHELSIO_CHIP_CODE(CHELSIO_T6, pl_rev); default: break; } return -EINVAL; } #ifdef CONFIG_PCI_IOV static void cxgb4_mgmt_setup(struct net_device *dev) { dev->type = ARPHRD_NONE; dev->mtu = 0; dev->hard_header_len = 0; dev->addr_len = 0; dev->tx_queue_len = 0; dev->flags |= IFF_NOARP; dev->priv_flags |= IFF_NO_QUEUE; /* Initialize the device structure. */ dev->netdev_ops = &cxgb4_mgmt_netdev_ops; dev->ethtool_ops = &cxgb4_mgmt_ethtool_ops; } static int cxgb4_iov_configure(struct pci_dev *pdev, int num_vfs) { struct adapter *adap = pci_get_drvdata(pdev); int err = 0; int current_vfs = pci_num_vf(pdev); u32 pcie_fw; pcie_fw = readl(adap->regs + PCIE_FW_A); /* Check if fw is initialized */ if (!(pcie_fw & PCIE_FW_INIT_F)) { dev_warn(&pdev->dev, "Device not initialized\n"); return -EOPNOTSUPP; } /* If any of the VF's is already assigned to Guest OS, then * SRIOV for the same cannot be modified */ if (current_vfs && pci_vfs_assigned(pdev)) { dev_err(&pdev->dev, "Cannot modify SR-IOV while VFs are assigned\n"); return current_vfs; } /* Note that the upper-level code ensures that we're never called with * a non-zero "num_vfs" when we already have VFs instantiated. But * it never hurts to code defensively. */ if (num_vfs != 0 && current_vfs != 0) return -EBUSY; /* Nothing to do for no change. */ if (num_vfs == current_vfs) return num_vfs; /* Disable SRIOV when zero is passed. */ if (!num_vfs) { pci_disable_sriov(pdev); /* free VF Management Interface */ unregister_netdev(adap->port[0]); free_netdev(adap->port[0]); adap->port[0] = NULL; /* free VF resources */ adap->num_vfs = 0; kfree(adap->vfinfo); adap->vfinfo = NULL; return 0; } if (!current_vfs) { struct fw_pfvf_cmd port_cmd, port_rpl; struct net_device *netdev; unsigned int pmask, port; struct pci_dev *pbridge; struct port_info *pi; char name[IFNAMSIZ]; u32 devcap2; u16 flags; /* If we want to instantiate Virtual Functions, then our * parent bridge's PCI-E needs to support Alternative Routing * ID (ARI) because our VFs will show up at function offset 8 * and above. */ pbridge = pdev->bus->self; pcie_capability_read_word(pbridge, PCI_EXP_FLAGS, &flags); pcie_capability_read_dword(pbridge, PCI_EXP_DEVCAP2, &devcap2); if ((flags & PCI_EXP_FLAGS_VERS) < 2 || !(devcap2 & PCI_EXP_DEVCAP2_ARI)) { /* Our parent bridge does not support ARI so issue a * warning and skip instantiating the VFs. They * won't be reachable. */ dev_warn(&pdev->dev, "Parent bridge %02x:%02x.%x doesn't support ARI; can't instantiate Virtual Functions\n", pbridge->bus->number, PCI_SLOT(pbridge->devfn), PCI_FUNC(pbridge->devfn)); return -ENOTSUPP; } memset(&port_cmd, 0, sizeof(port_cmd)); port_cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PFVF_CMD) | FW_CMD_REQUEST_F | FW_CMD_READ_F | FW_PFVF_CMD_PFN_V(adap->pf) | FW_PFVF_CMD_VFN_V(0)); port_cmd.retval_len16 = cpu_to_be32(FW_LEN16(port_cmd)); err = t4_wr_mbox(adap, adap->mbox, &port_cmd, sizeof(port_cmd), &port_rpl); if (err) return err; pmask = FW_PFVF_CMD_PMASK_G(be32_to_cpu(port_rpl.type_to_neq)); port = ffs(pmask) - 1; /* Allocate VF Management Interface. */ snprintf(name, IFNAMSIZ, "mgmtpf%d,%d", adap->adap_idx, adap->pf); netdev = alloc_netdev(sizeof(struct port_info), name, NET_NAME_UNKNOWN, cxgb4_mgmt_setup); if (!netdev) return -ENOMEM; pi = netdev_priv(netdev); pi->adapter = adap; pi->lport = port; pi->tx_chan = port; SET_NETDEV_DEV(netdev, &pdev->dev); adap->port[0] = netdev; pi->port_id = 0; err = register_netdev(adap->port[0]); if (err) { pr_info("Unable to register VF mgmt netdev %s\n", name); free_netdev(adap->port[0]); adap->port[0] = NULL; return err; } /* Allocate and set up VF Information. */ adap->vfinfo = kcalloc(pci_sriov_get_totalvfs(pdev), sizeof(struct vf_info), GFP_KERNEL); if (!adap->vfinfo) { unregister_netdev(adap->port[0]); free_netdev(adap->port[0]); adap->port[0] = NULL; return -ENOMEM; } cxgb4_mgmt_fill_vf_station_mac_addr(adap); } /* Instantiate the requested number of VFs. */ err = pci_enable_sriov(pdev, num_vfs); if (err) { pr_info("Unable to instantiate %d VFs\n", num_vfs); if (!current_vfs) { unregister_netdev(adap->port[0]); free_netdev(adap->port[0]); adap->port[0] = NULL; kfree(adap->vfinfo); adap->vfinfo = NULL; } return err; } adap->num_vfs = num_vfs; return num_vfs; } #endif /* CONFIG_PCI_IOV */ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { struct net_device *netdev; struct adapter *adapter; static int adap_idx = 1; int s_qpp, qpp, num_seg; struct port_info *pi; bool highdma = false; enum chip_type chip; void __iomem *regs; int func, chip_ver; u16 device_id; int i, err; u32 whoami; err = pci_request_regions(pdev, KBUILD_MODNAME); if (err) { /* Just info, some other driver may have claimed the device. */ dev_info(&pdev->dev, "cannot obtain PCI resources\n"); return err; } err = pci_enable_device(pdev); if (err) { dev_err(&pdev->dev, "cannot enable PCI device\n"); goto out_release_regions; } regs = pci_ioremap_bar(pdev, 0); if (!regs) { dev_err(&pdev->dev, "cannot map device registers\n"); err = -ENOMEM; goto out_disable_device; } adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); if (!adapter) { err = -ENOMEM; goto out_unmap_bar0; } adapter->regs = regs; err = t4_wait_dev_ready(regs); if (err < 0) goto out_free_adapter; /* We control everything through one PF */ whoami = t4_read_reg(adapter, PL_WHOAMI_A); pci_read_config_word(pdev, PCI_DEVICE_ID, &device_id); chip = t4_get_chip_type(adapter, CHELSIO_PCI_ID_VER(device_id)); if ((int)chip < 0) { dev_err(&pdev->dev, "Device %d is not supported\n", device_id); err = chip; goto out_free_adapter; } chip_ver = CHELSIO_CHIP_VERSION(chip); func = chip_ver <= CHELSIO_T5 ? SOURCEPF_G(whoami) : T6_SOURCEPF_G(whoami); adapter->pdev = pdev; adapter->pdev_dev = &pdev->dev; adapter->name = pci_name(pdev); adapter->mbox = func; adapter->pf = func; adapter->params.chip = chip; adapter->adap_idx = adap_idx; adapter->msg_enable = DFLT_MSG_ENABLE; adapter->mbox_log = kzalloc(sizeof(*adapter->mbox_log) + (sizeof(struct mbox_cmd) * T4_OS_LOG_MBOX_CMDS), GFP_KERNEL); if (!adapter->mbox_log) { err = -ENOMEM; goto out_free_adapter; } spin_lock_init(&adapter->mbox_lock); INIT_LIST_HEAD(&adapter->mlist.list); adapter->mbox_log->size = T4_OS_LOG_MBOX_CMDS; pci_set_drvdata(pdev, adapter); if (func != ent->driver_data) { pci_disable_device(pdev); pci_save_state(pdev); /* to restore SR-IOV later */ return 0; } if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { highdma = true; err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); if (err) { dev_err(&pdev->dev, "unable to obtain 64-bit DMA for " "coherent allocations\n"); goto out_free_adapter; } } else { err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); if (err) { dev_err(&pdev->dev, "no usable DMA configuration\n"); goto out_free_adapter; } } pci_enable_pcie_error_reporting(pdev); pci_set_master(pdev); pci_save_state(pdev); adap_idx++; adapter->workq = create_singlethread_workqueue("cxgb4"); if (!adapter->workq) { err = -ENOMEM; goto out_free_adapter; } /* PCI device has been enabled */ adapter->flags |= CXGB4_DEV_ENABLED; memset(adapter->chan_map, 0xff, sizeof(adapter->chan_map)); /* If possible, we use PCIe Relaxed Ordering Attribute to deliver * Ingress Packet Data to Free List Buffers in order to allow for * chipset performance optimizations between the Root Complex and * Memory Controllers. (Messages to the associated Ingress Queue * notifying new Packet Placement in the Free Lists Buffers will be * send without the Relaxed Ordering Attribute thus guaranteeing that * all preceding PCIe Transaction Layer Packets will be processed * first.) But some Root Complexes have various issues with Upstream * Transaction Layer Packets with the Relaxed Ordering Attribute set. * The PCIe devices which under the Root Complexes will be cleared the * Relaxed Ordering bit in the configuration space, So we check our * PCIe configuration space to see if it's flagged with advice against * using Relaxed Ordering. */ if (!pcie_relaxed_ordering_enabled(pdev)) adapter->flags |= CXGB4_ROOT_NO_RELAXED_ORDERING; spin_lock_init(&adapter->stats_lock); spin_lock_init(&adapter->tid_release_lock); spin_lock_init(&adapter->win0_lock); INIT_WORK(&adapter->tid_release_task, process_tid_release_list); INIT_WORK(&adapter->db_full_task, process_db_full); INIT_WORK(&adapter->db_drop_task, process_db_drop); INIT_WORK(&adapter->fatal_err_notify_task, notify_fatal_err); err = t4_prep_adapter(adapter); if (err) goto out_free_adapter; if (is_kdump_kernel()) { /* Collect hardware state and append to /proc/vmcore */ err = cxgb4_cudbg_vmcore_add_dump(adapter); if (err) { dev_warn(adapter->pdev_dev, "Fail collecting vmcore device dump, err: %d. Continuing\n", err); err = 0; } } if (!is_t4(adapter->params.chip)) { s_qpp = (QUEUESPERPAGEPF0_S + (QUEUESPERPAGEPF1_S - QUEUESPERPAGEPF0_S) * adapter->pf); qpp = 1 << QUEUESPERPAGEPF0_G(t4_read_reg(adapter, SGE_EGRESS_QUEUES_PER_PAGE_PF_A) >> s_qpp); num_seg = PAGE_SIZE / SEGMENT_SIZE; /* Each segment size is 128B. Write coalescing is enabled only * when SGE_EGRESS_QUEUES_PER_PAGE_PF reg value for the * queue is less no of segments that can be accommodated in * a page size. */ if (qpp > num_seg) { dev_err(&pdev->dev, "Incorrect number of egress queues per page\n"); err = -EINVAL; goto out_free_adapter; } adapter->bar2 = ioremap_wc(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2)); if (!adapter->bar2) { dev_err(&pdev->dev, "cannot map device bar2 region\n"); err = -ENOMEM; goto out_free_adapter; } } setup_memwin(adapter); err = adap_init0(adapter, 0); #ifdef CONFIG_DEBUG_FS bitmap_zero(adapter->sge.blocked_fl, adapter->sge.egr_sz); #endif setup_memwin_rdma(adapter); if (err) goto out_unmap_bar; /* configure SGE_STAT_CFG_A to read WC stats */ if (!is_t4(adapter->params.chip)) t4_write_reg(adapter, SGE_STAT_CFG_A, STATSOURCE_T5_V(7) | (is_t5(adapter->params.chip) ? STATMODE_V(0) : T6_STATMODE_V(0))); /* Initialize hash mac addr list */ INIT_LIST_HEAD(&adapter->mac_hlist); for_each_port(adapter, i) { /* For supporting MQPRIO Offload, need some extra * queues for each ETHOFLD TIDs. Keep it equal to * MAX_ATIDs for now. Once we connect to firmware * later and query the EOTID params, we'll come to * know the actual # of EOTIDs supported. */ netdev = alloc_etherdev_mq(sizeof(struct port_info), MAX_ETH_QSETS + MAX_ATIDS); if (!netdev) { err = -ENOMEM; goto out_free_dev; } SET_NETDEV_DEV(netdev, &pdev->dev); adapter->port[i] = netdev; pi = netdev_priv(netdev); pi->adapter = adapter; pi->xact_addr_filt = -1; pi->port_id = i; netdev->irq = pdev->irq; netdev->hw_features = NETIF_F_SG | TSO_FLAGS | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_GRO | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_TC; if (chip_ver > CHELSIO_T5) { netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_TSO | NETIF_F_TSO6; netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_HW_TLS_RECORD; } if (highdma) netdev->hw_features |= NETIF_F_HIGHDMA; netdev->features |= netdev->hw_features; netdev->vlan_features = netdev->features & VLAN_FEAT; netdev->priv_flags |= IFF_UNICAST_FLT; /* MTU range: 81 - 9600 */ netdev->min_mtu = 81; /* accommodate SACK */ netdev->max_mtu = MAX_MTU; netdev->netdev_ops = &cxgb4_netdev_ops; #ifdef CONFIG_CHELSIO_T4_DCB netdev->dcbnl_ops = &cxgb4_dcb_ops; cxgb4_dcb_state_init(netdev); cxgb4_dcb_version_init(netdev); #endif cxgb4_set_ethtool_ops(netdev); } cxgb4_init_ethtool_dump(adapter); pci_set_drvdata(pdev, adapter); if (adapter->flags & CXGB4_FW_OK) { err = t4_port_init(adapter, func, func, 0); if (err) goto out_free_dev; } else if (adapter->params.nports == 1) { /* If we don't have a connection to the firmware -- possibly * because of an error -- grab the raw VPD parameters so we * can set the proper MAC Address on the debug network * interface that we've created. */ u8 hw_addr[ETH_ALEN]; u8 *na = adapter->params.vpd.na; err = t4_get_raw_vpd_params(adapter, &adapter->params.vpd); if (!err) { for (i = 0; i < ETH_ALEN; i++) hw_addr[i] = (hex2val(na[2 * i + 0]) * 16 + hex2val(na[2 * i + 1])); t4_set_hw_addr(adapter, 0, hw_addr); } } if (!(adapter->flags & CXGB4_FW_OK)) goto fw_attach_fail; /* Configure queues and allocate tables now, they can be needed as * soon as the first register_netdev completes. */ err = cfg_queues(adapter); if (err) goto out_free_dev; adapter->smt = t4_init_smt(); if (!adapter->smt) { /* We tolerate a lack of SMT, giving up some functionality */ dev_warn(&pdev->dev, "could not allocate SMT, continuing\n"); } adapter->l2t = t4_init_l2t(adapter->l2t_start, adapter->l2t_end); if (!adapter->l2t) { /* We tolerate a lack of L2T, giving up some functionality */ dev_warn(&pdev->dev, "could not allocate L2T, continuing\n"); adapter->params.offload = 0; } #if IS_ENABLED(CONFIG_IPV6) if (chip_ver <= CHELSIO_T5 && (!(t4_read_reg(adapter, LE_DB_CONFIG_A) & ASLIPCOMPEN_F))) { /* CLIP functionality is not present in hardware, * hence disable all offload features */ dev_warn(&pdev->dev, "CLIP not enabled in hardware, continuing\n"); adapter->params.offload = 0; } else { adapter->clipt = t4_init_clip_tbl(adapter->clipt_start, adapter->clipt_end); if (!adapter->clipt) { /* We tolerate a lack of clip_table, giving up * some functionality */ dev_warn(&pdev->dev, "could not allocate Clip table, continuing\n"); adapter->params.offload = 0; } } #endif for_each_port(adapter, i) { pi = adap2pinfo(adapter, i); pi->sched_tbl = t4_init_sched(adapter->params.nsched_cls); if (!pi->sched_tbl) dev_warn(&pdev->dev, "could not activate scheduling on port %d\n", i); } if (tid_init(&adapter->tids) < 0) { dev_warn(&pdev->dev, "could not allocate TID table, " "continuing\n"); adapter->params.offload = 0; } else { adapter->tc_u32 = cxgb4_init_tc_u32(adapter); if (!adapter->tc_u32) dev_warn(&pdev->dev, "could not offload tc u32, continuing\n"); if (cxgb4_init_tc_flower(adapter)) dev_warn(&pdev->dev, "could not offload tc flower, continuing\n"); if (cxgb4_init_tc_mqprio(adapter)) dev_warn(&pdev->dev, "could not offload tc mqprio, continuing\n"); if (cxgb4_init_tc_matchall(adapter)) dev_warn(&pdev->dev, "could not offload tc matchall, continuing\n"); } if (is_offload(adapter) || is_hashfilter(adapter)) { if (t4_read_reg(adapter, LE_DB_CONFIG_A) & HASHEN_F) { u32 hash_base, hash_reg; if (chip_ver <= CHELSIO_T5) { hash_reg = LE_DB_TID_HASHBASE_A; hash_base = t4_read_reg(adapter, hash_reg); adapter->tids.hash_base = hash_base / 4; } else { hash_reg = T6_LE_DB_HASH_TID_BASE_A; hash_base = t4_read_reg(adapter, hash_reg); adapter->tids.hash_base = hash_base; } } } /* See what interrupts we'll be using */ if (msi > 1 && enable_msix(adapter) == 0) adapter->flags |= CXGB4_USING_MSIX; else if (msi > 0 && pci_enable_msi(pdev) == 0) { adapter->flags |= CXGB4_USING_MSI; if (msi > 1) free_msix_info(adapter); } /* check for PCI Express bandwidth capabiltites */ pcie_print_link_status(pdev); cxgb4_init_mps_ref_entries(adapter); err = init_rss(adapter); if (err) goto out_free_dev; err = setup_non_data_intr(adapter); if (err) { dev_err(adapter->pdev_dev, "Non Data interrupt allocation failed, err: %d\n", err); goto out_free_dev; } err = setup_fw_sge_queues(adapter); if (err) { dev_err(adapter->pdev_dev, "FW sge queue allocation failed, err %d", err); goto out_free_dev; } fw_attach_fail: /* * The card is now ready to go. If any errors occur during device * registration we do not fail the whole card but rather proceed only * with the ports we manage to register successfully. However we must * register at least one net device. */ for_each_port(adapter, i) { pi = adap2pinfo(adapter, i); adapter->port[i]->dev_port = pi->lport; netif_set_real_num_tx_queues(adapter->port[i], pi->nqsets); netif_set_real_num_rx_queues(adapter->port[i], pi->nqsets); netif_carrier_off(adapter->port[i]); err = register_netdev(adapter->port[i]); if (err) break; adapter->chan_map[pi->tx_chan] = i; print_port_info(adapter->port[i]); } if (i == 0) { dev_err(&pdev->dev, "could not register any net devices\n"); goto out_free_dev; } if (err) { dev_warn(&pdev->dev, "only %d net devices registered\n", i); err = 0; } if (cxgb4_debugfs_root) { adapter->debugfs_root = debugfs_create_dir(pci_name(pdev), cxgb4_debugfs_root); setup_debugfs(adapter); } /* PCIe EEH recovery on powerpc platforms needs fundamental reset */ pdev->needs_freset = 1; if (is_uld(adapter)) { mutex_lock(&uld_mutex); list_add_tail(&adapter->list_node, &adapter_list); mutex_unlock(&uld_mutex); } if (!is_t4(adapter->params.chip)) cxgb4_ptp_init(adapter); if (IS_REACHABLE(CONFIG_THERMAL) && !is_t4(adapter->params.chip) && (adapter->flags & CXGB4_FW_OK)) cxgb4_thermal_init(adapter); print_adapter_info(adapter); return 0; out_free_dev: t4_free_sge_resources(adapter); free_some_resources(adapter); if (adapter->flags & CXGB4_USING_MSIX) free_msix_info(adapter); if (adapter->num_uld || adapter->num_ofld_uld) t4_uld_mem_free(adapter); out_unmap_bar: if (!is_t4(adapter->params.chip)) iounmap(adapter->bar2); out_free_adapter: if (adapter->workq) destroy_workqueue(adapter->workq); kfree(adapter->mbox_log); kfree(adapter); out_unmap_bar0: iounmap(regs); out_disable_device: pci_disable_pcie_error_reporting(pdev); pci_disable_device(pdev); out_release_regions: pci_release_regions(pdev); return err; } static void remove_one(struct pci_dev *pdev) { struct adapter *adapter = pci_get_drvdata(pdev); struct hash_mac_addr *entry, *tmp; if (!adapter) { pci_release_regions(pdev); return; } /* If we allocated filters, free up state associated with any * valid filters ... */ clear_all_filters(adapter); adapter->flags |= CXGB4_SHUTTING_DOWN; if (adapter->pf == 4) { int i; /* Tear down per-adapter Work Queue first since it can contain * references to our adapter data structure. */ destroy_workqueue(adapter->workq); if (is_uld(adapter)) { detach_ulds(adapter); t4_uld_clean_up(adapter); } adap_free_hma_mem(adapter); disable_interrupts(adapter); cxgb4_free_mps_ref_entries(adapter); for_each_port(adapter, i) if (adapter->port[i]->reg_state == NETREG_REGISTERED) unregister_netdev(adapter->port[i]); debugfs_remove_recursive(adapter->debugfs_root); if (!is_t4(adapter->params.chip)) cxgb4_ptp_stop(adapter); if (IS_REACHABLE(CONFIG_THERMAL)) cxgb4_thermal_remove(adapter); if (adapter->flags & CXGB4_FULL_INIT_DONE) cxgb_down(adapter); if (adapter->flags & CXGB4_USING_MSIX) free_msix_info(adapter); if (adapter->num_uld || adapter->num_ofld_uld) t4_uld_mem_free(adapter); free_some_resources(adapter); list_for_each_entry_safe(entry, tmp, &adapter->mac_hlist, list) { list_del(&entry->list); kfree(entry); } #if IS_ENABLED(CONFIG_IPV6) t4_cleanup_clip_tbl(adapter); #endif if (!is_t4(adapter->params.chip)) iounmap(adapter->bar2); } #ifdef CONFIG_PCI_IOV else { cxgb4_iov_configure(adapter->pdev, 0); } #endif iounmap(adapter->regs); pci_disable_pcie_error_reporting(pdev); if ((adapter->flags & CXGB4_DEV_ENABLED)) { pci_disable_device(pdev); adapter->flags &= ~CXGB4_DEV_ENABLED; } pci_release_regions(pdev); kfree(adapter->mbox_log); synchronize_rcu(); kfree(adapter); } /* "Shutdown" quiesces the device, stopping Ingress Packet and Interrupt * delivery. This is essentially a stripped down version of the PCI remove() * function where we do the minimal amount of work necessary to shutdown any * further activity. */ static void shutdown_one(struct pci_dev *pdev) { struct adapter *adapter = pci_get_drvdata(pdev); /* As with remove_one() above (see extended comment), we only want do * do cleanup on PCI Devices which went all the way through init_one() * ... */ if (!adapter) { pci_release_regions(pdev); return; } adapter->flags |= CXGB4_SHUTTING_DOWN; if (adapter->pf == 4) { int i; for_each_port(adapter, i) if (adapter->port[i]->reg_state == NETREG_REGISTERED) cxgb_close(adapter->port[i]); rtnl_lock(); cxgb4_mqprio_stop_offload(adapter); rtnl_unlock(); if (is_uld(adapter)) { detach_ulds(adapter); t4_uld_clean_up(adapter); } disable_interrupts(adapter); disable_msi(adapter); t4_sge_stop(adapter); if (adapter->flags & CXGB4_FW_OK) t4_fw_bye(adapter, adapter->mbox); } } static struct pci_driver cxgb4_driver = { .name = KBUILD_MODNAME, .id_table = cxgb4_pci_tbl, .probe = init_one, .remove = remove_one, .shutdown = shutdown_one, #ifdef CONFIG_PCI_IOV .sriov_configure = cxgb4_iov_configure, #endif .err_handler = &cxgb4_eeh, }; static int __init cxgb4_init_module(void) { int ret; cxgb4_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); ret = pci_register_driver(&cxgb4_driver); if (ret < 0) goto err_pci; #if IS_ENABLED(CONFIG_IPV6) if (!inet6addr_registered) { ret = register_inet6addr_notifier(&cxgb4_inet6addr_notifier); if (ret) pci_unregister_driver(&cxgb4_driver); else inet6addr_registered = true; } #endif if (ret == 0) return ret; err_pci: debugfs_remove(cxgb4_debugfs_root); return ret; } static void __exit cxgb4_cleanup_module(void) { #if IS_ENABLED(CONFIG_IPV6) if (inet6addr_registered) { unregister_inet6addr_notifier(&cxgb4_inet6addr_notifier); inet6addr_registered = false; } #endif pci_unregister_driver(&cxgb4_driver); debugfs_remove(cxgb4_debugfs_root); /* NULL ok */ } module_init(cxgb4_init_module); module_exit(cxgb4_cleanup_module);
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