/* * This file and its contents are supplied under the terms of the * Common Development and Distribution License ("CDDL"), version 1.0. * You may only use this file in accordance with the terms of version * 1.0 of the CDDL. * * A full copy of the text of the CDDL should have accompanied this * source. A copy of the CDDL is also available via the Internet at * http://www.illumos.org/license/CDDL. */ /* * Copyright 2021, The University of Queensland * Copyright (c) 2018, Joyent, Inc. * Copyright 2020 RackTop Systems, Inc. */ /* * Mellanox Connect-X 4/5/6 driver. */ /* * The PRM for this family of parts is freely available, and can be found at: * https://www.mellanox.com/related-docs/user_manuals/ \ * Ethernet_Adapters_Programming_Manual.pdf */ /* * ConnectX glossary * ----------------- * * WR Work Request: something we've asked the hardware to do by * creating a Work Queue Entry (WQE), e.g. send or recv a packet * * WQE Work Queue Entry: a descriptor on a work queue descriptor ring * * WQ Work Queue: a descriptor ring that we can place WQEs on, usually * either a Send Queue (SQ) or Receive Queue (RQ). Different WQ * types have different WQE structures, different commands for * creating and destroying them, etc, but share a common context * structure, counter setup and state graph. * SQ Send Queue, a specific type of WQ that sends packets * RQ Receive Queue, a specific type of WQ that receives packets * * CQ Completion Queue: completion of WRs from a WQ are reported to * one of these, as a CQE on its entry ring. * CQE Completion Queue Entry: an entry in a CQ ring. Contains error * info, as well as packet size, the ID of the WQ, and the index * of the WQE which completed. Does not contain any packet data. * * EQ Event Queue: a ring of event structs from the hardware informing * us when particular events happen. Many events can point at a * a particular CQ which we should then go look at. * EQE Event Queue Entry: an entry on the EQ ring * * UAR User Access Region, a page of the device's PCI BAR which is * tied to particular EQ/CQ/WQ sets and contains doorbells to * ring to arm them for interrupts or wake them up for new work * * RQT RQ Table, a collection of indexed RQs used to refer to the group * as a single unit (for e.g. hashing/RSS). * * TIR Transport Interface Recieve, a bucket of resources for the * reception of packets. TIRs have to point at either a single RQ * or a table of RQs (RQT). They then serve as a target for flow * table entries (FEs). TIRs that point at an RQT also contain the * settings for hashing for RSS. * * TIS Transport Interface Send, a bucket of resources associated with * the transmission of packets. In particular, the temporary * resources used for LSO internally in the card are accounted to * a TIS. * * FT Flow Table, a collection of FEs and FGs that can be referred to * as a single entity (e.g. used as a target from another flow * entry or set as the "root" table to handle incoming or outgoing * packets). Packets arriving at a FT are matched against the * FEs in the table until either one matches with a terminating * action or all FEs are exhausted (it's first-match-wins but with * some actions that are non-terminal, like counting actions). * * FG Flow Group, a group of FEs which share a common "mask" (i.e. * they match on the same attributes of packets coming into the * flow). * * FE Flow Entry, an individual set of values to match against * packets entering the flow table, combined with an action to * take upon a successful match. The action we use most is * "forward", which sends the packets to a TIR or another flow * table and then stops further processing within the FE's FT. * * lkey/mkey A reference to something similar to a page table but in the * device's internal onboard MMU. Since Connect-X parts double as * IB cards (lots of RDMA) they have extensive onboard memory mgmt * features which we try very hard not to use. For our WQEs we use * the "reserved" lkey, which is a special value which indicates * that addresses we give are linear addresses and should not be * translated. * * PD Protection Domain, an IB concept. We have to allocate one to * provide as a parameter for new WQs, but we don't do anything * with it. * * TDOM/TD Transport Domain, an IB concept. We allocate one in order to * provide it as a parameter to TIR/TIS creation, but we don't do * anything with it. */ /* * * Data flow overview * ------------------ * * This driver is a MAC ring-enabled driver which maps rings to send and recv * queues in hardware on the device. * * Each SQ and RQ is set up to report to its own individual CQ, to ensure * sufficient space, and simplify the logic needed to work out which buffer * was completed. * * The CQs are then round-robin allocated onto EQs, of which we set up one per * interrupt that the system gives us for the device. Normally this means we * have 8 EQs. * * When we have >= 8 EQs available, we try to allocate only RX or only TX * CQs on each one. The EQs are chosen for RX and TX in an alternating fashion. * * EQ #0 is reserved for all event types other than completion events, and has * no CQs associated with it at any time. EQs #1 and upwards are only used for * handling CQ completion events. * * +------+ +------+ +------+ +---------+ * | SQ 0 |---->| CQ 0 |-----+ | EQ 0 |------> | MSI-X 0 | mlxcx_intr_0 * +------+ +------+ | +------+ +---------+ * | * +------+ +------+ | * | SQ 1 |---->| CQ 1 |---+ | +------+ * +------+ +------+ | +---> | | * | | | * +------+ +------+ | | EQ 1 | +---------+ * | SQ 2 |---->| CQ 2 |---------> | |------> | MSI-X 1 | mlxcx_intr_n * +------+ +------+ | +---> | | +---------+ * | | +------+ * | | * ... | | * | | +------+ * +------+ +------+ +-----> | | * | RQ 0 |---->| CQ 3 |---------> | | +---------+ * +------+ +------+ | | EQ 2 |------> | MSI-X 2 | mlxcx_intr_n * | | | +---------+ * +------+ +------+ | +-> | | * | RQ 1 |---->| CQ 4 |-----+ | +------+ * +------+ +------+ | * | .... * +------+ +------+ | * | RQ 2 |---->| CQ 5 |-------+ * +------+ +------+ * * ... (note this diagram does not show RX-only or TX-only EQs) * * For TX, we advertise all of the SQs we create as plain rings to MAC with * no TX groups. This puts MAC in "virtual group" mode where it will allocate * and use the rings as it sees fit. * * For RX, we advertise actual groups in order to make use of hardware * classification. * * The hardware classification we use is based around Flow Tables, and we * currently ignore all of the eswitch features of the card. The NIC VPORT * is always set to promisc mode so that the eswitch sends us all of the * traffic that arrives on the NIC, and we use flow entries to manage * everything. * * We use 2 layers of flow tables for classification: traffic arrives at the * root RX flow table which contains MAC address filters. Those then send * matched traffic to the per-group L1 VLAN filter tables which contain VLAN * presence and VID filters. * * Since these parts only support doing RSS hashing on a single protocol at a * time, we have to use a third layer of flow tables as well to break traffic * down by L4 and L3 protocol (TCPv6, TCPv4, UDPv6, UDPv4, IPv6, IPv4 etc) * so that it can be sent to the appropriate TIR for hashing. * * Incoming packets * + +---------+ +---------+ * | +->| group 0 | | group 0 | * | | | vlan ft | +-->| hash ft | * v | | L1 | | | L2 | * +----+----+ | +---------+ | +---------+ +-----+ +-----+------+ * | eswitch | | | | | | TCPv6 |--->| TIR |--->| | RQ0 | * +----+----+ | | | | +---------+ +-----+ | +------+ * | | | | | | UDPv6 |--->| TIR |--->| | RQ1 | * | | | | | +---------+ +-----+ | +------+ * | | | | | | TCPv4 |--->| TIR |--->| | RQ2 | * v | | | | +---------+ +-----+ | RQT +------+ * +----+----+ | +---------+ | | UDPv4 |--->| TIR |--->| | ... | * | root rx | | | default |--+ +---------+ +-----+ | | | * | flow tb | | +---------+ | | IPv6 |--->| TIR |--->| | | * | L0 | | | promisc |--+ +---------+ +-----+ | | | * +---------+ | +---------+ ^ | IPv4 |--->| TIR |--->| | | * | bcast |---|---------------+ +---------+ +-----+ +-----+------+ * +---------+ | ^ | other |-+ * | MAC 0 |---+ | +---------+ | +-----+ +-----+ * +---------+ | +->| TIR |--->| RQ0 | * | MAC 1 |-+ | +-----+ +-----+ * +---------+ | +---------------+ * | MAC 2 |-+ | ^ * +---------+ | | | * | MAC 3 |-+ | +---------+ | +---------+ * +---------+ | | | group 1 | | | group 1 | * | ..... | +--->| vlan ft | | +>| hash ft | * | | | | L1 | | | | L2 | * +---------+ | +---------+ | | +---------+ +-----+ +-----+------+ * | promisc |---+ | VLAN 0 |----+ | TCPv6 |--->| TIR |--->| | RQ3 | * +---------+ +---------+ | +---------+ +-----+ | +------+ * | ..... | | | UDPv6 |--->| TIR |--->| | RQ4 | * | | | +---------+ +-----+ | +------+ * | | | | TCPv4 |--->| TIR |--->| | RQ5 | * | | | +---------+ +-----+ | RQT +------+ * +---------+ | | UDPv4 |--->| TIR |--->| | ... | * | | | +---------+ +-----+ | | | * +---------+ | | IPv6 |--->| TIR |--->| | | * | promisc |--+ +---------+ +-----+ | | | * +---------+ | IPv4 |--->| TIR |--->| | | * +---------+ +-----+ +-----+------+ * | other |-+ * +---------+ | * ....... | +-----+ +-----+ * +->| TIR |--->| RQ3 | * +-----+ +-----+ * * Note that the "promisc" flow entries are only set/enabled when promisc * mode is enabled for the NIC. All promisc flow entries point directly at * group 0's hashing flowtable (so all promisc-only traffic lands on group 0, * the "default group" in MAC). * * The "default" entry in the L1 VLAN filter flow tables is used when there * are no VLANs set for the group, to accept any traffic regardless of tag. It * is deleted as soon as a VLAN filter is added (and re-instated if the * last VLAN filter is removed). * * The actual descriptor ring structures for RX on Connect-X4 don't contain any * space for packet data (they're a collection of scatter pointers only). TX * descriptors contain some space for "inline headers" (and the card requires * us to put at least the L2 Ethernet headers there for the eswitch to look at) * but all the rest of the data comes from the gather pointers. * * When we get completions back they simply contain the ring index number of * the WR (work request) which completed. So, we manage the buffers for actual * packet data completely independently of the descriptors in this driver. When * a WR is enqueued in a WQE (work queue entry), we stamp the packet data buffer * with the WQE index that we put it at, and therefore don't have to look at * the original descriptor at all when handling completions. * * For RX, we create sufficient packet data buffers to fill 150% of the * available descriptors for each ring. These all are pre-set-up for DMA and * have an mblk_t associated with them (with desballoc()). * * For TX we either borrow the mblk's memory and DMA bind it (if the packet is * large enough), or we copy it into a pre-allocated buffer set up in the same * as as for RX. */ /* * Buffer lifecycle: RX * -------------------- * * The lifecycle of an mlxcx_buffer_t (packet buffer) used for RX is pretty * straightforward. * * It is created (and has all its memory allocated) at the time of starting up * the RX ring it belongs to. Then it is placed on the "free" list in the * mlxcx_buffer_shard_t associated with its RQ. When mlxcx_rq_refill() wants * more buffers to add to the RQ, it takes one off and marks it as "on WQ" * before making a WQE for it. * * After a completion event occurs, the packet is either discarded (and the * buffer_t returned to the free list), or it is readied for loaning to MAC * and placed on the "loaned" list in the mlxcx_buffer_shard_t. * * Once MAC and the rest of the system have finished with the packet, they call * freemsg() on its mblk, which will call mlxcx_buf_mp_return. At this point * the fate of the buffer_t is determined by the state of the * mlxcx_buffer_shard_t. When the shard is in its normal state the buffer_t * will be returned to the free list, potentially to be recycled and used * again. But if the shard is draining (E.g. after a ring stop) there will be * no recycling and the buffer_t is immediately destroyed. * * At detach/teardown time, buffers are only every destroyed from the free list. * * * + * | * | mlxcx_buf_create * | * v * +----+----+ * | created | * +----+----+ +------+ * | | dead | * | +------+ * | mlxcx_buf_return ^ * | | * v | mlxcx_buf_destroy * mlxcx_buf_destroy +----+----+ +-----------+ | * +---------| free |<------no-| draining? |-yes-+ * | +----+----+ +-----------+ * | | ^ * | | | * v | mlxcx_buf_take | mlxcx_buf_return * +---+--+ v | * | dead | +---+---+ | * +------+ | on WQ |- - - - - - - - >O * +---+---+ ^ * | | * | | * | mlxcx_buf_loan | mlxcx_buf_mp_return * v | * +-------+--------+ | * | on loan to MAC |----------->O * +----------------+ freemsg() * */ /* * Buffer lifecycle: TX * -------------------- * * mlxcx_buffer_ts used for TX are divided into two kinds: regular buffers, and * "foreign" buffers. * * The former have their memory allocated and DMA bound by this driver, while * the latter (the "foreign" buffers) are on loan from MAC. Their memory is * not owned by us, though we do DMA bind it (and take responsibility for * un-binding it when we're done with them). * * We use separate mlxcx_buf_shard_ts for foreign and local buffers on each * SQ. Thus, there is a separate free list and mutex for each kind. * * Since a TX packet might consist of multiple mblks, we translate each mblk * into exactly one buffer_t. The buffer_ts are chained together in the same * order as the mblks, using the mlb_tx_chain/mlb_tx_chain_entry list_t. * * Each chain of TX buffers may consist of foreign or driver buffers, in any * mixture. * * The head of a TX buffer chain has mlb_tx_head == itself, which distinguishes * it from the rest of the chain buffers. * * TX buffer chains are always returned to the free list by * mlxcx_buf_return_chain(), which takes care of walking the mlb_tx_chain and * freeing all of the members. * * We only call freemsg() once, on the head of the TX buffer chain's original * mblk. This is true whether we copied it or bound it in a foreign buffer. */ /* * Startup and command interface * ----------------------------- * * The command interface is the primary way in which we give control orders to * the hardware (e.g. actions like "create this queue" or "delete this flow * entry"). The command interface is never used to transmit or receive packets * -- that takes place only on the queues that are set up through it. * * In mlxcx_cmd.c we implement our use of the command interface on top of a * simple taskq. As commands are submitted from the taskq they choose a * "slot", if there are no free slots then execution of the command will * be paused until one is free. The hardware permits up to 32 independent * slots for concurrent command execution. * * Before interrupts are enabled, command completion is polled, once * interrupts are up command completions become asynchronous and are * wired to EQ 0. A caveat to this is commands can not be submitted * directly from EQ 0's completion handler, and any processing resulting from * an asynchronous event which requires further use of the command interface * is posted through a taskq. * * The startup/attach process for this card involves a bunch of different steps * which are summarised pretty well in the PRM. We have to send a number of * commands which do different things to start the card up, give it some pages * of our own memory for it to use, then start creating all the entities that * we need to use like EQs, CQs, WQs, as well as their dependencies like PDs * and TDoms. */ /* * UARs * ---- * * The pages of the PCI BAR other than the first few are reserved for use as * "UAR" sections in this device. Each UAR section can be used as a set of * doorbells for our queues. * * Currently we just make one single UAR for all of our queues. It doesn't * seem to be a major limitation yet. * * When we're sending packets through an SQ, the PRM is not awful clear about * exactly how we're meant to use the first 16 bytes of the Blueflame buffers * (it's clear on the pattern of alternation you're expected to use between * even and odd for Blueflame sends, but not for regular doorbells). * * Currently we don't do the even-odd alternating pattern for ordinary * doorbells, and we don't use Blueflame at all. This seems to work fine, at * least on Connect-X4 Lx. */ /* * Lock ordering * ------------- * * Interrupt side: * * - mleq_mtx * - mlcq_arm_mtx * - mlcq_mtx * - mlcq_bufbmtx * - mlwq_mtx * - mlbs_mtx * - mlp_mtx * * GLD side: * * - mlp_mtx * - mlg_mtx * - mlg_*.mlft_mtx * - mlp_*.mlft_mtx * - mlwq_mtx * - mlbs_mtx * - mlcq_bufbmtx * - mleq_mtx * - mlcq_arm_mtx * - mlcq_mtx * */ #include #include #include #include #include #include #include CTASSERT((1 << MLXCX_RX_HASH_FT_SIZE_SHIFT) >= MLXCX_TIRS_PER_GROUP); #define MLXCX_MODULE_NAME "mlxcx" /* * We give this to the firmware, so it has to be in a fixed format that it * understands. */ #define MLXCX_DRIVER_VERSION "illumos,mlxcx,1.0.0,1,000,000000" /* * Firmware may take a while to reclaim pages. Try a set number of times. */ clock_t mlxcx_reclaim_delay = 1000 * 50; /* 50 ms in us */ uint_t mlxcx_reclaim_tries = 100; /* Wait at most 5000ms */ static void *mlxcx_softstate; /* * Fault detection thresholds. */ uint_t mlxcx_doorbell_tries = MLXCX_DOORBELL_TRIES_DFLT; uint_t mlxcx_stuck_intr_count = MLXCX_STUCK_INTR_COUNT_DFLT; static void mlxcx_load_prop_defaults(mlxcx_t *mlxp) { mlxcx_drv_props_t *p = &mlxp->mlx_props; mlxcx_port_t *port = &mlxp->mlx_ports[0]; VERIFY((mlxp->mlx_attach & MLXCX_ATTACH_PORTS) != 0); VERIFY((mlxp->mlx_attach & (MLXCX_ATTACH_CQS | MLXCX_ATTACH_WQS)) == 0); /* * Currently we have different queue size defaults for two * categories of queues. One set for devices which support a * maximum speed of 10Gb/s, and another for those above that. */ if ((port->mlp_max_proto & (MLXCX_PROTO_25G | MLXCX_PROTO_40G | MLXCX_PROTO_50G | MLXCX_PROTO_100G)) != 0) { p->mldp_cq_size_shift_default = MLXCX_CQ_SIZE_SHIFT_25G; p->mldp_rq_size_shift_default = MLXCX_RQ_SIZE_SHIFT_25G; p->mldp_sq_size_shift_default = MLXCX_SQ_SIZE_SHIFT_25G; } else if ((port->mlp_max_proto & (MLXCX_PROTO_100M | MLXCX_PROTO_1G | MLXCX_PROTO_10G)) != 0) { p->mldp_cq_size_shift_default = MLXCX_CQ_SIZE_SHIFT_DFLT; p->mldp_rq_size_shift_default = MLXCX_RQ_SIZE_SHIFT_DFLT; p->mldp_sq_size_shift_default = MLXCX_SQ_SIZE_SHIFT_DFLT; } else { mlxcx_warn(mlxp, "Encountered a port with a speed we don't " "recognize. Proto: 0x%x", port->mlp_max_proto); p->mldp_cq_size_shift_default = MLXCX_CQ_SIZE_SHIFT_DFLT; p->mldp_rq_size_shift_default = MLXCX_RQ_SIZE_SHIFT_DFLT; p->mldp_sq_size_shift_default = MLXCX_SQ_SIZE_SHIFT_DFLT; } } /* * Properties which may have different defaults based on hardware * characteristics. */ static void mlxcx_load_model_props(mlxcx_t *mlxp) { mlxcx_drv_props_t *p = &mlxp->mlx_props; mlxcx_load_prop_defaults(mlxp); p->mldp_cq_size_shift = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "cq_size_shift", p->mldp_cq_size_shift_default); p->mldp_sq_size_shift = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "sq_size_shift", p->mldp_sq_size_shift_default); p->mldp_rq_size_shift = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "rq_size_shift", p->mldp_rq_size_shift_default); } static void mlxcx_load_props(mlxcx_t *mlxp) { mlxcx_drv_props_t *p = &mlxp->mlx_props; p->mldp_eq_size_shift = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "eq_size_shift", MLXCX_EQ_SIZE_SHIFT_DFLT); p->mldp_cqemod_period_usec = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "cqemod_period_usec", MLXCX_CQEMOD_PERIOD_USEC_DFLT); p->mldp_cqemod_count = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "cqemod_count", MLXCX_CQEMOD_COUNT_DFLT); p->mldp_intrmod_period_usec = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "intrmod_period_usec", MLXCX_INTRMOD_PERIOD_USEC_DFLT); p->mldp_tx_ngroups = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "tx_ngroups", MLXCX_TX_NGROUPS_DFLT); p->mldp_tx_nrings_per_group = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "tx_nrings_per_group", MLXCX_TX_NRINGS_PER_GROUP_DFLT); p->mldp_rx_ngroups_large = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "rx_ngroups_large", MLXCX_RX_NGROUPS_LARGE_DFLT); p->mldp_rx_ngroups_small = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "rx_ngroups_small", MLXCX_RX_NGROUPS_SMALL_DFLT); p->mldp_rx_nrings_per_large_group = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "rx_nrings_per_large_group", MLXCX_RX_NRINGS_PER_LARGE_GROUP_DFLT); p->mldp_rx_nrings_per_small_group = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "rx_nrings_per_small_group", MLXCX_RX_NRINGS_PER_SMALL_GROUP_DFLT); p->mldp_ftbl_root_size_shift = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "ftbl_root_size_shift", MLXCX_FTBL_ROOT_SIZE_SHIFT_DFLT); p->mldp_tx_bind_threshold = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "tx_bind_threshold", MLXCX_TX_BIND_THRESHOLD_DFLT); p->mldp_ftbl_vlan_size_shift = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "ftbl_vlan_size_shift", MLXCX_FTBL_VLAN_SIZE_SHIFT_DFLT); p->mldp_eq_check_interval_sec = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "eq_check_interval_sec", MLXCX_EQ_CHECK_INTERVAL_SEC_DFLT); p->mldp_cq_check_interval_sec = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "cq_check_interval_sec", MLXCX_CQ_CHECK_INTERVAL_SEC_DFLT); p->mldp_wq_check_interval_sec = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "wq_check_interval_sec", MLXCX_WQ_CHECK_INTERVAL_SEC_DFLT); p->mldp_rx_per_cq = ddi_getprop(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_CANSLEEP | DDI_PROP_DONTPASS, "rx_limit_per_completion", MLXCX_RX_PER_CQ_DEFAULT); if (p->mldp_rx_per_cq < MLXCX_RX_PER_CQ_MIN || p->mldp_rx_per_cq > MLXCX_RX_PER_CQ_MAX) { mlxcx_warn(mlxp, "!rx_limit_per_completion = %u is " "out of range. Defaulting to: %d. Valid values are from " "%d to %d", p->mldp_rx_per_cq, MLXCX_RX_PER_CQ_DEFAULT, MLXCX_RX_PER_CQ_MIN, MLXCX_RX_PER_CQ_MAX); p->mldp_rx_per_cq = MLXCX_RX_PER_CQ_DEFAULT; } } void mlxcx_note(mlxcx_t *mlxp, const char *fmt, ...) { va_list ap; va_start(ap, fmt); if (mlxp != NULL && mlxp->mlx_dip != NULL) { vdev_err(mlxp->mlx_dip, CE_NOTE, fmt, ap); } else { vcmn_err(CE_NOTE, fmt, ap); } va_end(ap); } void mlxcx_warn(mlxcx_t *mlxp, const char *fmt, ...) { va_list ap; va_start(ap, fmt); if (mlxp != NULL && mlxp->mlx_dip != NULL) { vdev_err(mlxp->mlx_dip, CE_WARN, fmt, ap); } else { vcmn_err(CE_WARN, fmt, ap); } va_end(ap); } void mlxcx_panic(mlxcx_t *mlxp, const char *fmt, ...) { va_list ap; va_start(ap, fmt); if (mlxp != NULL && mlxp->mlx_dip != NULL) { vdev_err(mlxp->mlx_dip, CE_PANIC, fmt, ap); } else { vcmn_err(CE_PANIC, fmt, ap); } va_end(ap); } uint16_t mlxcx_get16(mlxcx_t *mlxp, uintptr_t off) { uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base; return (ddi_get16(mlxp->mlx_regs_handle, (void *)addr)); } uint32_t mlxcx_get32(mlxcx_t *mlxp, uintptr_t off) { uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base; return (ddi_get32(mlxp->mlx_regs_handle, (void *)addr)); } uint64_t mlxcx_get64(mlxcx_t *mlxp, uintptr_t off) { uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base; return (ddi_get64(mlxp->mlx_regs_handle, (void *)addr)); } void mlxcx_put32(mlxcx_t *mlxp, uintptr_t off, uint32_t val) { uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base; ddi_put32(mlxp->mlx_regs_handle, (void *)addr, val); } void mlxcx_put64(mlxcx_t *mlxp, uintptr_t off, uint64_t val) { uintptr_t addr = off + (uintptr_t)mlxp->mlx_regs_base; ddi_put64(mlxp->mlx_regs_handle, (void *)addr, val); } void mlxcx_uar_put32(mlxcx_t *mlxp, mlxcx_uar_t *mlu, uintptr_t off, uint32_t val) { /* * The UAR is always inside the first BAR, which we mapped as * mlx_regs */ uintptr_t addr = off + (uintptr_t)mlu->mlu_base + (uintptr_t)mlxp->mlx_regs_base; ddi_put32(mlxp->mlx_regs_handle, (void *)addr, val); } void mlxcx_uar_put64(mlxcx_t *mlxp, mlxcx_uar_t *mlu, uintptr_t off, uint64_t val) { uintptr_t addr = off + (uintptr_t)mlu->mlu_base + (uintptr_t)mlxp->mlx_regs_base; ddi_put64(mlxp->mlx_regs_handle, (void *)addr, val); } static void mlxcx_fm_fini(mlxcx_t *mlxp) { if (mlxp->mlx_fm_caps == 0) return; if (DDI_FM_ERRCB_CAP(mlxp->mlx_fm_caps)) ddi_fm_handler_unregister(mlxp->mlx_dip); if (DDI_FM_EREPORT_CAP(mlxp->mlx_fm_caps) || DDI_FM_ERRCB_CAP(mlxp->mlx_fm_caps)) pci_ereport_teardown(mlxp->mlx_dip); ddi_fm_fini(mlxp->mlx_dip); mlxp->mlx_fm_caps = 0; } void mlxcx_fm_ereport(mlxcx_t *mlxp, const char *detail) { uint64_t ena; char buf[FM_MAX_CLASS]; if (!DDI_FM_EREPORT_CAP(mlxp->mlx_fm_caps)) return; (void) snprintf(buf, FM_MAX_CLASS, "%s.%s", DDI_FM_DEVICE, detail); ena = fm_ena_generate(0, FM_ENA_FMT1); ddi_fm_ereport_post(mlxp->mlx_dip, buf, ena, DDI_NOSLEEP, FM_VERSION, DATA_TYPE_UINT8, FM_EREPORT_VERS0, NULL); } static int mlxcx_fm_errcb(dev_info_t *dip, ddi_fm_error_t *err, const void *arg) { /* * as the driver can always deal with an error in any dma or * access handle, we can just return the fme_status value. */ pci_ereport_post(dip, err, NULL); return (err->fme_status); } static void mlxcx_fm_init(mlxcx_t *mlxp) { ddi_iblock_cookie_t iblk; int def = DDI_FM_EREPORT_CAPABLE | DDI_FM_ACCCHK_CAPABLE | DDI_FM_DMACHK_CAPABLE | DDI_FM_ERRCB_CAPABLE; mlxp->mlx_fm_caps = ddi_prop_get_int(DDI_DEV_T_ANY, mlxp->mlx_dip, DDI_PROP_DONTPASS, "fm_capable", def); if (mlxp->mlx_fm_caps < 0) { mlxp->mlx_fm_caps = 0; } mlxp->mlx_fm_caps &= def; if (mlxp->mlx_fm_caps == 0) return; ddi_fm_init(mlxp->mlx_dip, &mlxp->mlx_fm_caps, &iblk); if (DDI_FM_EREPORT_CAP(mlxp->mlx_fm_caps) || DDI_FM_ERRCB_CAP(mlxp->mlx_fm_caps)) { pci_ereport_setup(mlxp->mlx_dip); } if (DDI_FM_ERRCB_CAP(mlxp->mlx_fm_caps)) { ddi_fm_handler_register(mlxp->mlx_dip, mlxcx_fm_errcb, (void *)mlxp); } } static void mlxcx_mlbs_teardown(mlxcx_t *mlxp, mlxcx_buf_shard_t *s) { mlxcx_buffer_t *buf; mutex_enter(&s->mlbs_mtx); while (!list_is_empty(&s->mlbs_busy)) cv_wait(&s->mlbs_free_nonempty, &s->mlbs_mtx); while (!list_is_empty(&s->mlbs_loaned)) cv_wait(&s->mlbs_free_nonempty, &s->mlbs_mtx); while ((buf = list_head(&s->mlbs_free)) != NULL) mlxcx_buf_destroy(mlxp, buf); list_destroy(&s->mlbs_free); list_destroy(&s->mlbs_busy); list_destroy(&s->mlbs_loaned); mutex_exit(&s->mlbs_mtx); cv_destroy(&s->mlbs_free_nonempty); mutex_destroy(&s->mlbs_mtx); } static void mlxcx_teardown_bufs(mlxcx_t *mlxp) { mlxcx_buf_shard_t *s; while ((s = list_remove_head(&mlxp->mlx_buf_shards)) != NULL) { mlxcx_mlbs_teardown(mlxp, s); kmem_free(s, sizeof (mlxcx_buf_shard_t)); } list_destroy(&mlxp->mlx_buf_shards); kmem_cache_destroy(mlxp->mlx_bufs_cache); } static void mlxcx_teardown_pages(mlxcx_t *mlxp) { uint_t nzeros = 0; uint64_t *pas; pas = kmem_alloc(sizeof (*pas) * MLXCX_MANAGE_PAGES_MAX_PAGES, KM_SLEEP); mutex_enter(&mlxp->mlx_pagemtx); while (mlxp->mlx_npages > 0) { int32_t req, ret; ASSERT0(avl_is_empty(&mlxp->mlx_pages)); req = MIN(mlxp->mlx_npages, MLXCX_MANAGE_PAGES_MAX_PAGES); if (!mlxcx_cmd_return_pages(mlxp, req, pas, &ret)) { mlxcx_warn(mlxp, "hardware refused to return pages, " "leaking %u remaining pages", mlxp->mlx_npages); goto out; } for (int32_t i = 0; i < ret; i++) { mlxcx_dev_page_t *mdp, probe; bzero(&probe, sizeof (probe)); probe.mxdp_pa = pas[i]; mdp = avl_find(&mlxp->mlx_pages, &probe, NULL); if (mdp != NULL) { avl_remove(&mlxp->mlx_pages, mdp); mlxp->mlx_npages--; mlxcx_dma_free(&mdp->mxdp_dma); kmem_free(mdp, sizeof (mlxcx_dev_page_t)); } else { mlxcx_panic(mlxp, "hardware returned a page " "with PA 0x%" PRIx64 " but we have no " "record of giving out such a page", pas[i]); } } /* * If no pages were returned, note that fact. */ if (ret == 0) { nzeros++; if (nzeros > mlxcx_reclaim_tries) { mlxcx_warn(mlxp, "hardware refused to return " "pages, leaking %u remaining pages", mlxp->mlx_npages); goto out; } delay(drv_usectohz(mlxcx_reclaim_delay)); } } avl_destroy(&mlxp->mlx_pages); out: mutex_exit(&mlxp->mlx_pagemtx); mutex_destroy(&mlxp->mlx_pagemtx); kmem_free(pas, sizeof (*pas) * MLXCX_MANAGE_PAGES_MAX_PAGES); } static boolean_t mlxcx_eq_alloc_dma(mlxcx_t *mlxp, mlxcx_event_queue_t *mleq) { ddi_device_acc_attr_t acc; ddi_dma_attr_t attr; boolean_t ret; size_t sz, i; VERIFY0(mleq->mleq_state & MLXCX_EQ_ALLOC); mleq->mleq_entshift = mlxp->mlx_props.mldp_eq_size_shift; mleq->mleq_nents = (1 << mleq->mleq_entshift); sz = mleq->mleq_nents * sizeof (mlxcx_eventq_ent_t); ASSERT3U(sz & (MLXCX_HW_PAGE_SIZE - 1), ==, 0); mlxcx_dma_acc_attr(mlxp, &acc); mlxcx_dma_queue_attr(mlxp, &attr); ret = mlxcx_dma_alloc(mlxp, &mleq->mleq_dma, &attr, &acc, B_TRUE, sz, B_TRUE); if (!ret) { mlxcx_warn(mlxp, "failed to allocate EQ memory"); return (B_FALSE); } mleq->mleq_ent = (mlxcx_eventq_ent_t *)mleq->mleq_dma.mxdb_va; for (i = 0; i < mleq->mleq_nents; ++i) mleq->mleq_ent[i].mleqe_owner = MLXCX_EQ_OWNER_INIT; mleq->mleq_state |= MLXCX_EQ_ALLOC; return (B_TRUE); } static void mlxcx_eq_rele_dma(mlxcx_t *mlxp, mlxcx_event_queue_t *mleq) { VERIFY(mleq->mleq_state & MLXCX_EQ_ALLOC); if (mleq->mleq_state & MLXCX_EQ_CREATED) VERIFY(mleq->mleq_state & MLXCX_EQ_DESTROYED); mlxcx_dma_free(&mleq->mleq_dma); mleq->mleq_ent = NULL; mleq->mleq_state &= ~MLXCX_EQ_ALLOC; } void mlxcx_teardown_flow_table(mlxcx_t *mlxp, mlxcx_flow_table_t *ft) { mlxcx_flow_group_t *fg; mlxcx_flow_entry_t *fe; int i; ASSERT(mutex_owned(&ft->mlft_mtx)); for (i = ft->mlft_nents - 1; i >= 0; --i) { fe = &ft->mlft_ent[i]; if (fe->mlfe_state & MLXCX_FLOW_ENTRY_CREATED) { if (!mlxcx_cmd_delete_flow_table_entry(mlxp, fe)) { mlxcx_panic(mlxp, "failed to delete flow " "entry %u on table %u", i, ft->mlft_num); } } } while ((fg = list_remove_head(&ft->mlft_groups)) != NULL) { if (fg->mlfg_state & MLXCX_FLOW_GROUP_CREATED && !(fg->mlfg_state & MLXCX_FLOW_GROUP_DESTROYED)) { if (!mlxcx_cmd_destroy_flow_group(mlxp, fg)) { mlxcx_panic(mlxp, "failed to destroy flow " "group %u", fg->mlfg_num); } } kmem_free(fg, sizeof (mlxcx_flow_group_t)); } list_destroy(&ft->mlft_groups); if (ft->mlft_state & MLXCX_FLOW_TABLE_CREATED && !(ft->mlft_state & MLXCX_FLOW_TABLE_DESTROYED)) { if (!mlxcx_cmd_destroy_flow_table(mlxp, ft)) { mlxcx_panic(mlxp, "failed to destroy flow table %u", ft->mlft_num); } } kmem_free(ft->mlft_ent, ft->mlft_entsize); ft->mlft_ent = NULL; mutex_exit(&ft->mlft_mtx); mutex_destroy(&ft->mlft_mtx); kmem_free(ft, sizeof (mlxcx_flow_table_t)); } static void mlxcx_teardown_ports(mlxcx_t *mlxp) { uint_t i; mlxcx_port_t *p; mlxcx_flow_table_t *ft; for (i = 0; i < mlxp->mlx_nports; ++i) { p = &mlxp->mlx_ports[i]; if (!(p->mlp_init & MLXCX_PORT_INIT)) continue; mutex_enter(&p->mlp_mtx); if ((ft = p->mlp_rx_flow) != NULL) { mutex_enter(&ft->mlft_mtx); /* * teardown_flow_table() will destroy the mutex, so * we don't release it here. */ mlxcx_teardown_flow_table(mlxp, ft); } mutex_exit(&p->mlp_mtx); mutex_destroy(&p->mlp_mtx); mutex_destroy(&p->mlx_port_event.mla_mtx); p->mlx_port_event.mla_mlx = NULL; p->mlx_port_event.mla_port = NULL; p->mlp_init &= ~MLXCX_PORT_INIT; } kmem_free(mlxp->mlx_ports, mlxp->mlx_ports_size); mlxp->mlx_ports = NULL; } static void mlxcx_teardown_wqs(mlxcx_t *mlxp) { mlxcx_work_queue_t *mlwq; while ((mlwq = list_head(&mlxp->mlx_wqs)) != NULL) { mlxcx_wq_teardown(mlxp, mlwq); } list_destroy(&mlxp->mlx_wqs); } static void mlxcx_teardown_cqs(mlxcx_t *mlxp) { mlxcx_completion_queue_t *mlcq; while ((mlcq = list_head(&mlxp->mlx_cqs)) != NULL) { mlxcx_cq_teardown(mlxp, mlcq); } list_destroy(&mlxp->mlx_cqs); } static void mlxcx_teardown_eqs(mlxcx_t *mlxp) { mlxcx_event_queue_t *mleq; uint_t i; for (i = 0; i < mlxp->mlx_intr_count; ++i) { mleq = &mlxp->mlx_eqs[i]; mutex_enter(&mleq->mleq_mtx); if ((mleq->mleq_state & MLXCX_EQ_CREATED) && !(mleq->mleq_state & MLXCX_EQ_DESTROYED)) { if (!mlxcx_cmd_destroy_eq(mlxp, mleq)) { mlxcx_warn(mlxp, "failed to destroy " "event queue idx %u eqn %u", i, mleq->mleq_num); } } if (mleq->mleq_state & MLXCX_EQ_ALLOC) { mlxcx_eq_rele_dma(mlxp, mleq); } mutex_exit(&mleq->mleq_mtx); } } static void mlxcx_teardown_checktimers(mlxcx_t *mlxp) { if (mlxp->mlx_props.mldp_eq_check_interval_sec > 0) ddi_periodic_delete(mlxp->mlx_eq_checktimer); if (mlxp->mlx_props.mldp_cq_check_interval_sec > 0) ddi_periodic_delete(mlxp->mlx_cq_checktimer); if (mlxp->mlx_props.mldp_wq_check_interval_sec > 0) ddi_periodic_delete(mlxp->mlx_wq_checktimer); } static void mlxcx_teardown(mlxcx_t *mlxp) { uint_t i; dev_info_t *dip = mlxp->mlx_dip; if (mlxp->mlx_attach & MLXCX_ATTACH_INTRS) { /* * Disable interrupts and let any active vectors quiesce. */ mlxcx_intr_disable(mlxp); } if (mlxp->mlx_attach & MLXCX_ATTACH_SENSORS) { mlxcx_teardown_sensors(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_SENSORS; } if (mlxp->mlx_attach & MLXCX_ATTACH_CHKTIMERS) { mlxcx_teardown_checktimers(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_CHKTIMERS; } if (mlxp->mlx_attach & MLXCX_ATTACH_GROUPS) { mlxcx_teardown_groups(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_GROUPS; } if (mlxp->mlx_attach & MLXCX_ATTACH_WQS) { mlxcx_teardown_wqs(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_WQS; } if (mlxp->mlx_attach & MLXCX_ATTACH_CQS) { mlxcx_teardown_cqs(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_CQS; } if (mlxp->mlx_attach & MLXCX_ATTACH_BUFS) { mlxcx_teardown_bufs(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_BUFS; } if (mlxp->mlx_attach & MLXCX_ATTACH_PORTS) { mlxcx_teardown_ports(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_PORTS; } if (mlxp->mlx_attach & MLXCX_ATTACH_INTRS) { mlxcx_teardown_eqs(mlxp); mlxcx_intr_teardown(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_INTRS; } if (mlxp->mlx_attach & MLXCX_ATTACH_UAR_PD_TD) { if (mlxp->mlx_uar.mlu_allocated) { if (!mlxcx_cmd_dealloc_uar(mlxp, &mlxp->mlx_uar)) { mlxcx_warn(mlxp, "failed to release UAR"); } for (i = 0; i < MLXCX_BF_PER_UAR; ++i) mutex_destroy(&mlxp->mlx_uar.mlu_bf[i].mbf_mtx); } if (mlxp->mlx_pd.mlpd_allocated && !mlxcx_cmd_dealloc_pd(mlxp, &mlxp->mlx_pd)) { mlxcx_warn(mlxp, "failed to release PD"); } if (mlxp->mlx_tdom.mltd_allocated && !mlxcx_cmd_dealloc_tdom(mlxp, &mlxp->mlx_tdom)) { mlxcx_warn(mlxp, "failed to release TDOM"); } mlxp->mlx_attach &= ~MLXCX_ATTACH_UAR_PD_TD; } if (mlxp->mlx_attach & MLXCX_ATTACH_INIT_HCA) { if (!mlxcx_cmd_teardown_hca(mlxp)) { mlxcx_warn(mlxp, "failed to send teardown HCA " "command during device detach"); } mlxp->mlx_attach &= ~MLXCX_ATTACH_INIT_HCA; } if (mlxp->mlx_attach & MLXCX_ATTACH_PAGE_LIST) { mlxcx_teardown_pages(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_PAGE_LIST; } if (mlxp->mlx_attach & MLXCX_ATTACH_ASYNC_TQ) { for (i = 0; i <= MLXCX_FUNC_ID_MAX; i++) { mlxp->mlx_npages_req[i].mla_mlx = NULL; mutex_destroy(&mlxp->mlx_npages_req[i].mla_mtx); } taskq_destroy(mlxp->mlx_async_tq); mlxp->mlx_async_tq = NULL; mlxp->mlx_attach &= ~MLXCX_ATTACH_ASYNC_TQ; } if (mlxp->mlx_attach & MLXCX_ATTACH_ENABLE_HCA) { if (!mlxcx_cmd_disable_hca(mlxp)) { mlxcx_warn(mlxp, "failed to send DISABLE HCA command " "during device detach"); } mlxp->mlx_attach &= ~MLXCX_ATTACH_ENABLE_HCA; } if (mlxp->mlx_attach & MLXCX_ATTACH_CMD) { mlxcx_cmd_queue_fini(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_CMD; } if (mlxp->mlx_attach & MLXCX_ATTACH_CAPS) { kmem_free(mlxp->mlx_caps, sizeof (mlxcx_caps_t)); mlxp->mlx_caps = NULL; mlxp->mlx_attach &= ~MLXCX_ATTACH_CAPS; } if (mlxp->mlx_attach & MLXCX_ATTACH_REGS) { ddi_regs_map_free(&mlxp->mlx_regs_handle); mlxp->mlx_regs_handle = NULL; mlxp->mlx_attach &= ~MLXCX_ATTACH_REGS; } if (mlxp->mlx_attach & MLXCX_ATTACH_PCI_CONFIG) { pci_config_teardown(&mlxp->mlx_cfg_handle); mlxp->mlx_cfg_handle = NULL; mlxp->mlx_attach &= ~MLXCX_ATTACH_PCI_CONFIG; } if (mlxp->mlx_attach & MLXCX_ATTACH_FM) { mlxcx_fm_fini(mlxp); mlxp->mlx_attach &= ~MLXCX_ATTACH_FM; } VERIFY3S(mlxp->mlx_attach, ==, 0); ddi_soft_state_free(mlxcx_softstate, mlxp->mlx_inst); ddi_set_driver_private(dip, NULL); } static boolean_t mlxcx_regs_map(mlxcx_t *mlxp) { off_t memsize; int ret; ddi_device_acc_attr_t da; if (ddi_dev_regsize(mlxp->mlx_dip, MLXCX_REG_NUMBER, &memsize) != DDI_SUCCESS) { mlxcx_warn(mlxp, "failed to get register set size"); return (B_FALSE); } /* * All data in the main BAR is kept in big-endian even though it's a PCI * device. */ bzero(&da, sizeof (ddi_device_acc_attr_t)); da.devacc_attr_version = DDI_DEVICE_ATTR_V0; da.devacc_attr_endian_flags = DDI_STRUCTURE_BE_ACC; da.devacc_attr_dataorder = DDI_STRICTORDER_ACC; if (DDI_FM_ACC_ERR_CAP(mlxp->mlx_fm_caps)) { da.devacc_attr_access = DDI_FLAGERR_ACC; } else { da.devacc_attr_access = DDI_DEFAULT_ACC; } ret = ddi_regs_map_setup(mlxp->mlx_dip, MLXCX_REG_NUMBER, &mlxp->mlx_regs_base, 0, memsize, &da, &mlxp->mlx_regs_handle); if (ret != DDI_SUCCESS) { mlxcx_warn(mlxp, "failed to map device registers: %d", ret); return (B_FALSE); } return (B_TRUE); } static boolean_t mlxcx_check_issi(mlxcx_t *mlxp) { uint32_t issi; if (!mlxcx_cmd_query_issi(mlxp, &issi)) { mlxcx_warn(mlxp, "failed to get ISSI"); return (B_FALSE); } if ((issi & (1 << MLXCX_CURRENT_ISSI)) == 0) { mlxcx_warn(mlxp, "hardware does not support software ISSI, " "hw vector 0x%x, sw version %u", issi, MLXCX_CURRENT_ISSI); return (B_FALSE); } if (!mlxcx_cmd_set_issi(mlxp, MLXCX_CURRENT_ISSI)) { mlxcx_warn(mlxp, "failed to set ISSI to %u", MLXCX_CURRENT_ISSI); return (B_FALSE); } return (B_TRUE); } boolean_t mlxcx_give_pages(mlxcx_t *mlxp, int32_t npages, int32_t *ngiven) { ddi_device_acc_attr_t acc; ddi_dma_attr_t attr; int32_t i; list_t plist; mlxcx_dev_page_t *mdp; mlxcx_dev_page_t **pages; const ddi_dma_cookie_t *ck; /* * If there are no pages required, then we're done here. */ if (npages <= 0) { *ngiven = 0; return (B_TRUE); } npages = MIN(npages, MLXCX_MANAGE_PAGES_MAX_PAGES); pages = kmem_alloc(sizeof (*pages) * npages, KM_SLEEP); list_create(&plist, sizeof (mlxcx_dev_page_t), offsetof(mlxcx_dev_page_t, mxdp_list)); for (i = 0; i < npages; i++) { mdp = kmem_zalloc(sizeof (mlxcx_dev_page_t), KM_SLEEP); mlxcx_dma_acc_attr(mlxp, &acc); mlxcx_dma_page_attr(mlxp, &attr); if (!mlxcx_dma_alloc(mlxp, &mdp->mxdp_dma, &attr, &acc, B_TRUE, MLXCX_HW_PAGE_SIZE, B_TRUE)) { mlxcx_warn(mlxp, "failed to allocate 4k page %u/%u", i, npages); kmem_free(mdp, sizeof (mlxcx_dev_page_t)); goto cleanup_npages; } ck = mlxcx_dma_cookie_one(&mdp->mxdp_dma); mdp->mxdp_pa = ck->dmac_laddress; list_insert_tail(&plist, mdp); } /* * Now that all of the pages have been allocated, given them to hardware * in chunks. */ for (i = 0; i < npages; i++) { pages[i] = list_remove_head(&plist); } if (!mlxcx_cmd_give_pages(mlxp, MLXCX_MANAGE_PAGES_OPMOD_GIVE_PAGES, npages, pages)) { mlxcx_warn(mlxp, "!hardware refused our gift of %u " "pages!", npages); for (i = 0; i < npages; i++) { list_insert_tail(&plist, pages[i]); } goto cleanup_npages; } mutex_enter(&mlxp->mlx_pagemtx); for (i = 0; i < npages; i++) { avl_add(&mlxp->mlx_pages, pages[i]); } mlxp->mlx_npages += npages; mutex_exit(&mlxp->mlx_pagemtx); list_destroy(&plist); kmem_free(pages, sizeof (*pages) * npages); *ngiven = npages; return (B_TRUE); cleanup_npages: kmem_free(pages, sizeof (*pages) * npages); while ((mdp = list_remove_head(&plist)) != NULL) { mlxcx_dma_free(&mdp->mxdp_dma); kmem_free(mdp, sizeof (mlxcx_dev_page_t)); } list_destroy(&plist); return (B_FALSE); } static boolean_t mlxcx_init_pages(mlxcx_t *mlxp, uint_t type) { int32_t npages, given; if (!mlxcx_cmd_query_pages(mlxp, type, &npages)) { mlxcx_warn(mlxp, "failed to determine boot pages"); return (B_FALSE); } while (npages > 0) { if (!mlxcx_give_pages(mlxp, npages, &given)) return (B_FALSE); npages -= given; } return (B_TRUE); } static int mlxcx_bufs_cache_constr(void *arg, void *cookie, int kmflags) { mlxcx_t *mlxp = cookie; mlxcx_buffer_t *b = arg; bzero(b, sizeof (mlxcx_buffer_t)); b->mlb_mlx = mlxp; b->mlb_state = MLXCX_BUFFER_INIT; list_create(&b->mlb_tx_chain, sizeof (mlxcx_buffer_t), offsetof(mlxcx_buffer_t, mlb_tx_chain_entry)); return (0); } static void mlxcx_bufs_cache_destr(void *arg, void *cookie) { mlxcx_t *mlxp = cookie; mlxcx_buffer_t *b = arg; VERIFY3P(b->mlb_mlx, ==, mlxp); VERIFY(b->mlb_state == MLXCX_BUFFER_INIT); list_destroy(&b->mlb_tx_chain); } mlxcx_buf_shard_t * mlxcx_mlbs_create(mlxcx_t *mlxp) { mlxcx_buf_shard_t *s; s = kmem_zalloc(sizeof (mlxcx_buf_shard_t), KM_SLEEP); mutex_init(&s->mlbs_mtx, NULL, MUTEX_DRIVER, DDI_INTR_PRI(mlxp->mlx_intr_pri)); list_create(&s->mlbs_busy, sizeof (mlxcx_buffer_t), offsetof(mlxcx_buffer_t, mlb_entry)); list_create(&s->mlbs_free, sizeof (mlxcx_buffer_t), offsetof(mlxcx_buffer_t, mlb_entry)); list_create(&s->mlbs_loaned, sizeof (mlxcx_buffer_t), offsetof(mlxcx_buffer_t, mlb_entry)); cv_init(&s->mlbs_free_nonempty, NULL, CV_DRIVER, NULL); list_insert_tail(&mlxp->mlx_buf_shards, s); return (s); } static boolean_t mlxcx_setup_bufs(mlxcx_t *mlxp) { char namebuf[KSTAT_STRLEN]; (void) snprintf(namebuf, KSTAT_STRLEN, "mlxcx%d_bufs_cache", ddi_get_instance(mlxp->mlx_dip)); mlxp->mlx_bufs_cache = kmem_cache_create(namebuf, sizeof (mlxcx_buffer_t), sizeof (uint64_t), mlxcx_bufs_cache_constr, mlxcx_bufs_cache_destr, NULL, mlxp, NULL, 0); list_create(&mlxp->mlx_buf_shards, sizeof (mlxcx_buf_shard_t), offsetof(mlxcx_buf_shard_t, mlbs_entry)); return (B_TRUE); } static void mlxcx_fm_qstate_ereport(mlxcx_t *mlxp, const char *qtype, uint32_t qnum, const char *state, uint8_t statenum) { uint64_t ena; char buf[FM_MAX_CLASS]; if (!DDI_FM_EREPORT_CAP(mlxp->mlx_fm_caps)) return; (void) snprintf(buf, FM_MAX_CLASS, "%s.%s", MLXCX_FM_SERVICE_MLXCX, "qstate.err"); ena = fm_ena_generate(0, FM_ENA_FMT1); ddi_fm_ereport_post(mlxp->mlx_dip, buf, ena, DDI_NOSLEEP, FM_VERSION, DATA_TYPE_UINT8, FM_EREPORT_VERS0, "state", DATA_TYPE_STRING, state, "state_num", DATA_TYPE_UINT8, statenum, "qtype", DATA_TYPE_STRING, qtype, "qnum", DATA_TYPE_UINT32, qnum, NULL); ddi_fm_service_impact(mlxp->mlx_dip, DDI_SERVICE_DEGRADED); } /* * The following set of routines are for monitoring the health of * event, completion and work queues. They run infrequently peeking at * the structs to catch stalls and inconsistent state. * * They peek at the structs *without* acquiring locks - we don't want * to impede flow of data. Driver start up and shutdown semantics * guarantee the structs are present and won't disappear underneath * these routines. * * As previously noted, the routines peek at active data in the structs and * they will store some values for comparison on next invocation. To * maintain integrity of the saved values, these values are only modified * within these routines. */ static void mlxcx_eq_check(void *arg) { mlxcx_t *mlxp = (mlxcx_t *)arg; mlxcx_event_queue_t *eq; mlxcx_eventq_ctx_t ctx; const char *str; uint_t i; for (i = 0; i < mlxp->mlx_intr_count; ++i) { eq = &mlxp->mlx_eqs[i]; if ((eq->mleq_state & MLXCX_EQ_CREATED) == 0) continue; /* * If the event queue was successfully created in the HCA, * then initialization and shutdown sequences guarantee * the queue exists. */ ASSERT0(eq->mleq_state & MLXCX_EQ_DESTROYED); if (!mlxcx_cmd_query_eq(mlxp, eq, &ctx)) continue; str = "???"; switch (ctx.mleqc_status) { case MLXCX_EQ_STATUS_OK: break; case MLXCX_EQ_STATUS_WRITE_FAILURE: str = "WRITE_FAILURE"; break; } if (ctx.mleqc_status != MLXCX_EQ_STATUS_OK) { mlxcx_fm_qstate_ereport(mlxp, "event", eq->mleq_num, str, ctx.mleqc_status); mlxcx_warn(mlxp, "EQ %u is in bad status: %x (%s)", eq->mleq_intr_index, ctx.mleqc_status, str); } if (ctx.mleqc_state != MLXCX_EQ_ST_ARMED && (eq->mleq_state & MLXCX_EQ_ARMED)) { if (eq->mleq_cc == eq->mleq_check_disarm_cc && ++eq->mleq_check_disarm_cnt >= 3) { mlxcx_fm_ereport(mlxp, DDI_FM_DEVICE_STALL); mlxcx_warn(mlxp, "EQ %u isn't armed", eq->mleq_intr_index); } eq->mleq_check_disarm_cc = eq->mleq_cc; } else { eq->mleq_check_disarm_cc = 0; eq->mleq_check_disarm_cnt = 0; } } } static void mlxcx_cq_check(void *arg) { mlxcx_t *mlxp = (mlxcx_t *)arg; mlxcx_completion_queue_t *cq; mlxcx_completionq_ctx_t ctx; const char *str, *type; uint_t v; for (cq = list_head(&mlxp->mlx_cqs); cq != NULL; cq = list_next(&mlxp->mlx_cqs, cq)) { if ((cq->mlcq_state & MLXCX_CQ_CREATED) == 0) continue; /* * If the completion queue was successfully created in the HCA, * then initialization and shutdown sequences guarantee * the queue exists. */ ASSERT0(cq->mlcq_state & MLXCX_CQ_DESTROYED); ASSERT0(cq->mlcq_state & MLXCX_CQ_TEARDOWN); if (cq->mlcq_fm_repd_qstate) continue; if (!mlxcx_cmd_query_cq(mlxp, cq, &ctx)) continue; if (cq->mlcq_wq != NULL) { mlxcx_work_queue_t *wq = cq->mlcq_wq; if (wq->mlwq_type == MLXCX_WQ_TYPE_RECVQ) type = "rx "; else if (wq->mlwq_type == MLXCX_WQ_TYPE_SENDQ) type = "tx "; else type = ""; } else { type = ""; } str = "???"; v = get_bits32(ctx.mlcqc_flags, MLXCX_CQ_CTX_STATUS); switch (v) { case MLXCX_CQC_STATUS_OK: break; case MLXCX_CQC_STATUS_OVERFLOW: str = "OVERFLOW"; break; case MLXCX_CQC_STATUS_WRITE_FAIL: str = "WRITE_FAIL"; break; case MLXCX_CQC_STATUS_INVALID: str = "INVALID"; break; } if (v != MLXCX_CQC_STATUS_OK) { mlxcx_fm_qstate_ereport(mlxp, "completion", cq->mlcq_num, str, v); mlxcx_warn(mlxp, "%sCQ 0x%x is in bad status: %x (%s)", type, cq->mlcq_num, v, str); cq->mlcq_fm_repd_qstate = B_TRUE; } v = get_bits32(ctx.mlcqc_flags, MLXCX_CQ_CTX_STATE); if (v != MLXCX_CQC_STATE_ARMED && (cq->mlcq_state & MLXCX_CQ_ARMED) && !(cq->mlcq_state & MLXCX_CQ_POLLING)) { if (cq->mlcq_cc == cq->mlcq_check_disarm_cc && ++cq->mlcq_check_disarm_cnt >= 3) { mlxcx_fm_ereport(mlxp, DDI_FM_DEVICE_STALL); mlxcx_warn(mlxp, "%sCQ 0x%x (%p) isn't armed", type, cq->mlcq_num, cq); } cq->mlcq_check_disarm_cc = cq->mlcq_cc; } else { cq->mlcq_check_disarm_cnt = 0; cq->mlcq_check_disarm_cc = 0; } } } void mlxcx_check_sq(mlxcx_t *mlxp, mlxcx_work_queue_t *sq) { mlxcx_sq_ctx_t ctx; mlxcx_sq_state_t state; if (!mlxcx_cmd_query_sq(mlxp, sq, &ctx)) return; ASSERT3U(from_be24(ctx.mlsqc_cqn), ==, sq->mlwq_cq->mlcq_num); state = get_bits32(ctx.mlsqc_flags, MLXCX_SQ_STATE); switch (state) { case MLXCX_SQ_STATE_RST: if (sq->mlwq_state & MLXCX_WQ_STARTED) { mlxcx_fm_qstate_ereport(mlxp, "send", sq->mlwq_num, "RST", state); sq->mlwq_fm_repd_qstate = B_TRUE; } break; case MLXCX_SQ_STATE_RDY: if (!(sq->mlwq_state & MLXCX_WQ_STARTED)) { mlxcx_fm_qstate_ereport(mlxp, "send", sq->mlwq_num, "RDY", state); sq->mlwq_fm_repd_qstate = B_TRUE; } break; case MLXCX_SQ_STATE_ERR: mlxcx_fm_qstate_ereport(mlxp, "send", sq->mlwq_num, "ERR", state); sq->mlwq_fm_repd_qstate = B_TRUE; break; default: mlxcx_fm_qstate_ereport(mlxp, "send", sq->mlwq_num, "???", state); sq->mlwq_fm_repd_qstate = B_TRUE; break; } } void mlxcx_check_rq(mlxcx_t *mlxp, mlxcx_work_queue_t *rq) { mlxcx_rq_ctx_t ctx; mlxcx_rq_state_t state; if (!mlxcx_cmd_query_rq(mlxp, rq, &ctx)) return; ASSERT3U(from_be24(ctx.mlrqc_cqn), ==, rq->mlwq_cq->mlcq_num); state = get_bits32(ctx.mlrqc_flags, MLXCX_RQ_STATE); switch (state) { case MLXCX_RQ_STATE_RST: if (rq->mlwq_state & MLXCX_WQ_STARTED) { mlxcx_fm_qstate_ereport(mlxp, "receive", rq->mlwq_num, "RST", state); rq->mlwq_fm_repd_qstate = B_TRUE; } break; case MLXCX_RQ_STATE_RDY: if (!(rq->mlwq_state & MLXCX_WQ_STARTED)) { mlxcx_fm_qstate_ereport(mlxp, "receive", rq->mlwq_num, "RDY", state); rq->mlwq_fm_repd_qstate = B_TRUE; } break; case MLXCX_RQ_STATE_ERR: mlxcx_fm_qstate_ereport(mlxp, "receive", rq->mlwq_num, "ERR", state); rq->mlwq_fm_repd_qstate = B_TRUE; break; default: mlxcx_fm_qstate_ereport(mlxp, "receive", rq->mlwq_num, "???", state); rq->mlwq_fm_repd_qstate = B_TRUE; break; } } static void mlxcx_wq_check(void *arg) { mlxcx_t *mlxp = (mlxcx_t *)arg; mlxcx_work_queue_t *wq; for (wq = list_head(&mlxp->mlx_wqs); wq != NULL; wq = list_next(&mlxp->mlx_wqs, wq)) { if ((wq->mlwq_state & MLXCX_WQ_CREATED) == 0) continue; /* * If the work queue was successfully created in the HCA, * then initialization and shutdown sequences guarantee * the queue exists. */ ASSERT0(wq->mlwq_state & MLXCX_WQ_DESTROYED); ASSERT0(wq->mlwq_state & MLXCX_WQ_TEARDOWN); if (wq->mlwq_fm_repd_qstate) continue; switch (wq->mlwq_type) { case MLXCX_WQ_TYPE_SENDQ: mlxcx_check_sq(mlxp, wq); break; case MLXCX_WQ_TYPE_RECVQ: mlxcx_check_rq(mlxp, wq); break; } } } static boolean_t mlxcx_setup_checktimers(mlxcx_t *mlxp) { if (mlxp->mlx_props.mldp_eq_check_interval_sec > 0) { mlxp->mlx_eq_checktimer = ddi_periodic_add(mlxcx_eq_check, mlxp, mlxp->mlx_props.mldp_eq_check_interval_sec * NANOSEC, DDI_IPL_0); } if (mlxp->mlx_props.mldp_cq_check_interval_sec > 0) { mlxp->mlx_cq_checktimer = ddi_periodic_add(mlxcx_cq_check, mlxp, mlxp->mlx_props.mldp_cq_check_interval_sec * NANOSEC, DDI_IPL_0); } if (mlxp->mlx_props.mldp_wq_check_interval_sec > 0) { mlxp->mlx_wq_checktimer = ddi_periodic_add(mlxcx_wq_check, mlxp, mlxp->mlx_props.mldp_wq_check_interval_sec * NANOSEC, DDI_IPL_0); } return (B_TRUE); } int mlxcx_dmac_fe_compare(const void *arg0, const void *arg1) { const mlxcx_flow_entry_t *left = arg0; const mlxcx_flow_entry_t *right = arg1; int bcmpr; bcmpr = memcmp(left->mlfe_dmac, right->mlfe_dmac, sizeof (left->mlfe_dmac)); if (bcmpr < 0) return (-1); if (bcmpr > 0) return (1); if (left->mlfe_vid < right->mlfe_vid) return (-1); if (left->mlfe_vid > right->mlfe_vid) return (1); return (0); } int mlxcx_grmac_compare(const void *arg0, const void *arg1) { const mlxcx_group_mac_t *left = arg0; const mlxcx_group_mac_t *right = arg1; int bcmpr; bcmpr = memcmp(left->mlgm_mac, right->mlgm_mac, sizeof (left->mlgm_mac)); if (bcmpr < 0) return (-1); if (bcmpr > 0) return (1); return (0); } int mlxcx_page_compare(const void *arg0, const void *arg1) { const mlxcx_dev_page_t *p0 = arg0; const mlxcx_dev_page_t *p1 = arg1; if (p0->mxdp_pa < p1->mxdp_pa) return (-1); if (p0->mxdp_pa > p1->mxdp_pa) return (1); return (0); } static boolean_t mlxcx_setup_ports(mlxcx_t *mlxp) { uint_t i, j; mlxcx_port_t *p; mlxcx_flow_table_t *ft; mlxcx_flow_group_t *fg; mlxcx_flow_entry_t *fe; VERIFY3U(mlxp->mlx_nports, >, 0); mlxp->mlx_ports_size = mlxp->mlx_nports * sizeof (mlxcx_port_t); mlxp->mlx_ports = kmem_zalloc(mlxp->mlx_ports_size, KM_SLEEP); for (i = 0; i < mlxp->mlx_nports; ++i) { p = &mlxp->mlx_ports[i]; p->mlp_num = i; p->mlx_port_event.mla_mlx = mlxp; p->mlx_port_event.mla_port = p; mutex_init(&p->mlx_port_event.mla_mtx, NULL, MUTEX_DRIVER, DDI_INTR_PRI(mlxp->mlx_async_intr_pri)); p->mlp_init |= MLXCX_PORT_INIT; mutex_init(&p->mlp_mtx, NULL, MUTEX_DRIVER, DDI_INTR_PRI(mlxp->mlx_intr_pri)); mutex_enter(&p->mlp_mtx); if (!mlxcx_cmd_query_nic_vport_ctx(mlxp, p)) { mutex_exit(&p->mlp_mtx); goto err; } if (!mlxcx_cmd_query_port_mtu(mlxp, p)) { mutex_exit(&p->mlp_mtx); goto err; } if (!mlxcx_cmd_query_port_status(mlxp, p)) { mutex_exit(&p->mlp_mtx); goto err; } if (!mlxcx_cmd_query_port_speed(mlxp, p)) { mutex_exit(&p->mlp_mtx); goto err; } if (!mlxcx_cmd_modify_nic_vport_ctx(mlxp, p, MLXCX_MODIFY_NIC_VPORT_CTX_PROMISC)) { mutex_exit(&p->mlp_mtx); goto err; } if (!mlxcx_cmd_query_port_fec(mlxp, p)) { mutex_exit(&p->mlp_mtx); goto err; } p->mlp_fec_requested = LINK_FEC_AUTO; mutex_exit(&p->mlp_mtx); } for (i = 0; i < mlxp->mlx_nports; ++i) { p = &mlxp->mlx_ports[i]; mutex_enter(&p->mlp_mtx); p->mlp_rx_flow = (ft = kmem_zalloc(sizeof (mlxcx_flow_table_t), KM_SLEEP)); mutex_init(&ft->mlft_mtx, NULL, MUTEX_DRIVER, DDI_INTR_PRI(mlxp->mlx_intr_pri)); mutex_enter(&ft->mlft_mtx); ft->mlft_type = MLXCX_FLOW_TABLE_NIC_RX; ft->mlft_port = p; ft->mlft_entshift = mlxp->mlx_props.mldp_ftbl_root_size_shift; if (ft->mlft_entshift > mlxp->mlx_caps->mlc_max_rx_ft_shift) ft->mlft_entshift = mlxp->mlx_caps->mlc_max_rx_ft_shift; ft->mlft_nents = (1 << ft->mlft_entshift); ft->mlft_entsize = ft->mlft_nents * sizeof (mlxcx_flow_entry_t); ft->mlft_ent = kmem_zalloc(ft->mlft_entsize, KM_SLEEP); list_create(&ft->mlft_groups, sizeof (mlxcx_flow_group_t), offsetof(mlxcx_flow_group_t, mlfg_entry)); for (j = 0; j < ft->mlft_nents; ++j) { ft->mlft_ent[j].mlfe_table = ft; ft->mlft_ent[j].mlfe_index = j; } if (!mlxcx_cmd_create_flow_table(mlxp, ft)) { mutex_exit(&ft->mlft_mtx); mutex_exit(&p->mlp_mtx); goto err; } if (!mlxcx_cmd_set_flow_table_root(mlxp, ft)) { mutex_exit(&ft->mlft_mtx); mutex_exit(&p->mlp_mtx); goto err; } /* * We match broadcast at the top of the root flow table, then * all multicast/unicast MACs, then the promisc entry is down * the very bottom. * * This way when promisc is on, that entry simply catches any * remaining traffic that earlier flows haven't matched. */ fg = kmem_zalloc(sizeof (mlxcx_flow_group_t), KM_SLEEP); list_insert_tail(&ft->mlft_groups, fg); fg->mlfg_table = ft; fg->mlfg_size = 1; fg->mlfg_mask |= MLXCX_FLOW_MATCH_DMAC; if (!mlxcx_setup_flow_group(mlxp, ft, fg)) { mutex_exit(&ft->mlft_mtx); mutex_exit(&p->mlp_mtx); goto err; } p->mlp_bcast = fg; fe = list_head(&fg->mlfg_entries); fe->mlfe_action = MLXCX_FLOW_ACTION_FORWARD; (void) memset(fe->mlfe_dmac, 0xff, sizeof (fe->mlfe_dmac)); fe->mlfe_state |= MLXCX_FLOW_ENTRY_DIRTY; fg = kmem_zalloc(sizeof (mlxcx_flow_group_t), KM_SLEEP); list_insert_tail(&ft->mlft_groups, fg); fg->mlfg_table = ft; fg->mlfg_size = ft->mlft_nents - 2; fg->mlfg_mask |= MLXCX_FLOW_MATCH_DMAC; if (!mlxcx_setup_flow_group(mlxp, ft, fg)) { mutex_exit(&ft->mlft_mtx); mutex_exit(&p->mlp_mtx); goto err; } p->mlp_umcast = fg; fg = kmem_zalloc(sizeof (mlxcx_flow_group_t), KM_SLEEP); list_insert_tail(&ft->mlft_groups, fg); fg->mlfg_table = ft; fg->mlfg_size = 1; if (!mlxcx_setup_flow_group(mlxp, ft, fg)) { mutex_exit(&ft->mlft_mtx); mutex_exit(&p->mlp_mtx); goto err; } p->mlp_promisc = fg; fe = list_head(&fg->mlfg_entries); fe->mlfe_action = MLXCX_FLOW_ACTION_FORWARD; fe->mlfe_state |= MLXCX_FLOW_ENTRY_DIRTY; avl_create(&p->mlp_dmac_fe, mlxcx_dmac_fe_compare, sizeof (mlxcx_flow_entry_t), offsetof(mlxcx_flow_entry_t, mlfe_dmac_entry)); mutex_exit(&ft->mlft_mtx); mutex_exit(&p->mlp_mtx); } return (B_TRUE); err: mlxcx_teardown_ports(mlxp); return (B_FALSE); } void mlxcx_remove_all_vlan_entries(mlxcx_t *mlxp, mlxcx_ring_group_t *g) { mlxcx_flow_table_t *ft = g->mlg_rx_vlan_ft; mlxcx_flow_group_t *fg = g->mlg_rx_vlan_fg; mlxcx_flow_group_t *dfg = g->mlg_rx_vlan_def_fg; mlxcx_flow_entry_t *fe; mlxcx_group_vlan_t *v; ASSERT(mutex_owned(&g->mlg_mtx)); mutex_enter(&ft->mlft_mtx); if (!list_is_empty(&g->mlg_rx_vlans)) { fe = list_head(&dfg->mlfg_entries); (void) mlxcx_cmd_set_flow_table_entry(mlxp, fe); } while ((v = list_remove_head(&g->mlg_rx_vlans)) != NULL) { fe = v->mlgv_fe; ASSERT3P(fe->mlfe_table, ==, ft); ASSERT3P(fe->mlfe_group, ==, fg); kmem_free(v, sizeof (mlxcx_group_vlan_t)); (void) mlxcx_cmd_delete_flow_table_entry(mlxp, fe); fe->mlfe_state &= ~MLXCX_FLOW_ENTRY_RESERVED; } mutex_exit(&ft->mlft_mtx); } boolean_t mlxcx_remove_vlan_entry(mlxcx_t *mlxp, mlxcx_ring_group_t *g, boolean_t tagged, uint16_t vid) { mlxcx_flow_table_t *ft = g->mlg_rx_vlan_ft; mlxcx_flow_group_t *fg = g->mlg_rx_vlan_fg; mlxcx_flow_group_t *dfg = g->mlg_rx_vlan_def_fg; mlxcx_flow_entry_t *fe; mlxcx_group_vlan_t *v; boolean_t found = B_FALSE; ASSERT(mutex_owned(&g->mlg_mtx)); mutex_enter(&ft->mlft_mtx); for (v = list_head(&g->mlg_rx_vlans); v != NULL; v = list_next(&g->mlg_rx_vlans, v)) { if (v->mlgv_tagged == tagged && v->mlgv_vid == vid) { found = B_TRUE; break; } } if (!found) { mutex_exit(&ft->mlft_mtx); return (B_FALSE); } list_remove(&g->mlg_rx_vlans, v); /* * If this is the last VLAN entry, we have to go back to accepting * any VLAN (which means re-enabling the default entry). * * Do this before we remove the flow entry for the last specific * VLAN so that we don't lose any traffic in the transition. */ if (list_is_empty(&g->mlg_rx_vlans)) { fe = list_head(&dfg->mlfg_entries); if (!mlxcx_cmd_set_flow_table_entry(mlxp, fe)) { list_insert_tail(&g->mlg_rx_vlans, v); mutex_exit(&ft->mlft_mtx); return (B_FALSE); } } fe = v->mlgv_fe; ASSERT(fe->mlfe_state & MLXCX_FLOW_ENTRY_RESERVED); ASSERT(fe->mlfe_state & MLXCX_FLOW_ENTRY_CREATED); ASSERT3P(fe->mlfe_table, ==, ft); ASSERT3P(fe->mlfe_group, ==, fg); if (!mlxcx_cmd_delete_flow_table_entry(mlxp, fe)) { list_insert_tail(&g->mlg_rx_vlans, v); fe = list_head(&dfg->mlfg_entries); if (fe->mlfe_state & MLXCX_FLOW_ENTRY_CREATED) { (void) mlxcx_cmd_delete_flow_table_entry(mlxp, fe); } mutex_exit(&ft->mlft_mtx); return (B_FALSE); } fe->mlfe_state &= ~MLXCX_FLOW_ENTRY_RESERVED; kmem_free(v, sizeof (mlxcx_group_vlan_t)); mutex_exit(&ft->mlft_mtx); return (B_TRUE); } boolean_t mlxcx_add_vlan_entry(mlxcx_t *mlxp, mlxcx_ring_group_t *g, boolean_t tagged, uint16_t vid) { mlxcx_flow_table_t *ft = g->mlg_rx_vlan_ft; mlxcx_flow_group_t *fg = g->mlg_rx_vlan_fg; mlxcx_flow_group_t *dfg = g->mlg_rx_vlan_def_fg; mlxcx_flow_entry_t *fe; mlxcx_group_vlan_t *v; boolean_t found = B_FALSE; boolean_t first = B_FALSE; ASSERT(mutex_owned(&g->mlg_mtx)); mutex_enter(&ft->mlft_mtx); for (v = list_head(&g->mlg_rx_vlans); v != NULL; v = list_next(&g->mlg_rx_vlans, v)) { if (v->mlgv_tagged == tagged && v->mlgv_vid == vid) { mutex_exit(&ft->mlft_mtx); return (B_TRUE); } } if (list_is_empty(&g->mlg_rx_vlans)) first = B_TRUE; for (fe = list_head(&fg->mlfg_entries); fe != NULL; fe = list_next(&fg->mlfg_entries, fe)) { if (!(fe->mlfe_state & MLXCX_FLOW_ENTRY_RESERVED)) { found = B_TRUE; break; } } if (!found) { mutex_exit(&ft->mlft_mtx); return (B_FALSE); } v = kmem_zalloc(sizeof (mlxcx_group_vlan_t), KM_SLEEP); v->mlgv_fe = fe; v->mlgv_tagged = tagged; v->mlgv_vid = vid; fe->mlfe_state |= MLXCX_FLOW_ENTRY_RESERVED; fe->mlfe_state |= MLXCX_FLOW_ENTRY_DIRTY; fe->mlfe_vid = vid; if (tagged) { fe->mlfe_vlan_type = MLXCX_VLAN_TYPE_CVLAN; } else { fe->mlfe_vlan_type = MLXCX_VLAN_TYPE_NONE; } if (!mlxcx_cmd_set_flow_table_entry(mlxp, fe)) { fe->mlfe_state &= ~MLXCX_FLOW_ENTRY_DIRTY; fe->mlfe_state &= ~MLXCX_FLOW_ENTRY_RESERVED; kmem_free(v, sizeof (mlxcx_group_vlan_t)); mutex_exit(&ft->mlft_mtx); return (B_FALSE); } list_insert_tail(&g->mlg_rx_vlans, v); /* * If the vlan list was empty for this group before adding this one, * then we no longer want the "default" entry to allow all VLANs * through. */ if (first) { fe = list_head(&dfg->mlfg_entries); (void) mlxcx_cmd_delete_flow_table_entry(mlxp, fe); } mutex_exit(&ft->mlft_mtx); return (B_TRUE); } void mlxcx_remove_all_umcast_entries(mlxcx_t *mlxp, mlxcx_port_t *port, mlxcx_ring_group_t *group) { mlxcx_flow_entry_t *fe; mlxcx_flow_table_t *ft = port->mlp_rx_flow; mlxcx_group_mac_t *gm, *ngm; ASSERT(mutex_owned(&port->mlp_mtx)); ASSERT(mutex_owned(&group->mlg_mtx)); mutex_enter(&ft->mlft_mtx); gm = avl_first(&group->mlg_rx_macs); for (; gm != NULL; gm = ngm) { ngm = AVL_NEXT(&group->mlg_rx_macs, gm); ASSERT3P(gm->mlgm_group, ==, group); fe = gm->mlgm_fe; ASSERT3P(fe->mlfe_table, ==, ft); avl_remove(&group->mlg_rx_macs, gm); list_remove(&fe->mlfe_ring_groups, gm); kmem_free(gm, sizeof (mlxcx_group_mac_t)); fe->mlfe_ndest = 0; for (gm = list_head(&fe->mlfe_ring_groups); gm != NULL; gm = list_next(&fe->mlfe_ring_groups, gm)) { fe->mlfe_dest[fe->mlfe_ndest++].mlfed_flow = gm->mlgm_group->mlg_rx_vlan_ft; } fe->mlfe_state |= MLXCX_FLOW_ENTRY_DIRTY; if (fe->mlfe_ndest > 0) { (void) mlxcx_cmd_set_flow_table_entry(mlxp, fe); continue; } /* * There are no more ring groups left for this MAC (it wasn't * attached to any other groups since ndest == 0), so clean up * its flow entry. */ avl_remove(&port->mlp_dmac_fe, fe); (void) mlxcx_cmd_delete_flow_table_entry(mlxp, fe); list_destroy(&fe->mlfe_ring_groups); fe->mlfe_state &= ~MLXCX_FLOW_ENTRY_RESERVED; } mutex_exit(&ft->mlft_mtx); } boolean_t mlxcx_remove_umcast_entry(mlxcx_t *mlxp, mlxcx_port_t *port, mlxcx_ring_group_t *group, const uint8_t *macaddr) { mlxcx_flow_entry_t *fe; mlxcx_flow_table_t *ft = port->mlp_rx_flow; mlxcx_group_mac_t *gm, probe; ASSERT(mutex_owned(&port->mlp_mtx)); ASSERT(mutex_owned(&group->mlg_mtx)); bzero(&probe, sizeof (probe)); bcopy(macaddr, probe.mlgm_mac, sizeof (probe.mlgm_mac)); mutex_enter(&ft->mlft_mtx); gm = avl_find(&group->mlg_rx_macs, &probe, NULL); if (gm == NULL) { mutex_exit(&ft->mlft_mtx); return (B_FALSE); } ASSERT3P(gm->mlgm_group, ==, group); ASSERT0(bcmp(macaddr, gm->mlgm_mac, sizeof (gm->mlgm_mac))); fe = gm->mlgm_fe; ASSERT3P(fe->mlfe_table, ==, ft); ASSERT0(bcmp(macaddr, fe->mlfe_dmac, sizeof (fe->mlfe_dmac))); list_remove(&fe->mlfe_ring_groups, gm); avl_remove(&group->mlg_rx_macs, gm); kmem_free(gm, sizeof (mlxcx_group_mac_t)); fe->mlfe_ndest = 0; for (gm = list_head(&fe->mlfe_ring_groups); gm != NULL; gm = list_next(&fe->mlfe_ring_groups, gm)) { fe->mlfe_dest[fe->mlfe_ndest++].mlfed_flow = gm->mlgm_group->mlg_rx_vlan_ft; } fe->mlfe_state |= MLXCX_FLOW_ENTRY_DIRTY; if (fe->mlfe_ndest > 0) { if (!mlxcx_cmd_set_flow_table_entry(mlxp, fe)) { mutex_exit(&ft->mlft_mtx); return (B_FALSE); } mutex_exit(&ft->mlft_mtx); return (B_TRUE); } /* * There are no more ring groups left for this MAC (it wasn't attached * to any other groups since ndest == 0), so clean up its flow entry. */ avl_remove(&port->mlp_dmac_fe, fe); (void) mlxcx_cmd_delete_flow_table_entry(mlxp, fe); list_destroy(&fe->mlfe_ring_groups); fe->mlfe_state &= ~MLXCX_FLOW_ENTRY_RESERVED; mutex_exit(&ft->mlft_mtx); return (B_TRUE); } boolean_t mlxcx_add_umcast_entry(mlxcx_t *mlxp, mlxcx_port_t *port, mlxcx_ring_group_t *group, const uint8_t *macaddr) { mlxcx_flow_group_t *fg; mlxcx_flow_entry_t *fe, probe; mlxcx_flow_table_t *ft = port->mlp_rx_flow; mlxcx_group_mac_t *gm; boolean_t found = B_FALSE; ASSERT(mutex_owned(&port->mlp_mtx)); ASSERT(mutex_owned(&group->mlg_mtx)); bzero(&probe, sizeof (probe)); bcopy(macaddr, probe.mlfe_dmac, sizeof (probe.mlfe_dmac)); mutex_enter(&ft->mlft_mtx); fe = avl_find(&port->mlp_dmac_fe, &probe, NULL); if (fe == NULL) { fg = port->mlp_umcast; for (fe = list_head(&fg->mlfg_entries); fe != NULL; fe = list_next(&fg->mlfg_entries, fe)) { if (!(fe->mlfe_state & MLXCX_FLOW_ENTRY_RESERVED)) { found = B_TRUE; break; } } if (!found) { mutex_exit(&ft->mlft_mtx); return (B_FALSE); } list_create(&fe->mlfe_ring_groups, sizeof (mlxcx_group_mac_t), offsetof(mlxcx_group_mac_t, mlgm_fe_entry)); fe->mlfe_state |= MLXCX_FLOW_ENTRY_RESERVED; fe->mlfe_action = MLXCX_FLOW_ACTION_FORWARD; bcopy(macaddr, fe->mlfe_dmac, sizeof (fe->mlfe_dmac)); avl_add(&port->mlp_dmac_fe, fe); } fe->mlfe_dest[fe->mlfe_ndest++].mlfed_flow = group->mlg_rx_vlan_ft; fe->mlfe_state |= MLXCX_FLOW_ENTRY_DIRTY; if (!mlxcx_cmd_set_flow_table_entry(mlxp, fe)) { fe->mlfe_state &= ~MLXCX_FLOW_ENTRY_DIRTY; if (--fe->mlfe_ndest == 0) { fe->mlfe_state &= ~MLXCX_FLOW_ENTRY_RESERVED; } mutex_exit(&ft->mlft_mtx); return (B_FALSE); } gm = kmem_zalloc(sizeof (mlxcx_group_mac_t), KM_SLEEP); gm->mlgm_group = group; gm->mlgm_fe = fe; bcopy(macaddr, gm->mlgm_mac, sizeof (gm->mlgm_mac)); avl_add(&group->mlg_rx_macs, gm); list_insert_tail(&fe->mlfe_ring_groups, gm); mutex_exit(&ft->mlft_mtx); return (B_TRUE); } boolean_t mlxcx_setup_flow_group(mlxcx_t *mlxp, mlxcx_flow_table_t *ft, mlxcx_flow_group_t *fg) { mlxcx_flow_entry_t *fe; uint_t i, idx; ASSERT(mutex_owned(&ft->mlft_mtx)); ASSERT(ft->mlft_state & MLXCX_FLOW_TABLE_CREATED); ASSERT3P(fg->mlfg_table, ==, ft); if (ft->mlft_next_ent + fg->mlfg_size > ft->mlft_nents) return (B_FALSE); fg->mlfg_start_idx = ft->mlft_next_ent; if (!mlxcx_cmd_create_flow_group(mlxp, fg)) { return (B_FALSE); } list_create(&fg->mlfg_entries, sizeof (mlxcx_flow_entry_t), offsetof(mlxcx_flow_entry_t, mlfe_group_entry)); for (i = 0; i < fg->mlfg_size; ++i) { idx = fg->mlfg_start_idx + i; fe = &ft->mlft_ent[idx]; fe->mlfe_group = fg; list_insert_tail(&fg->mlfg_entries, fe); } fg->mlfg_avail = fg->mlfg_size; ft->mlft_next_ent += fg->mlfg_size; return (B_TRUE); } static boolean_t mlxcx_setup_eq(mlxcx_t *mlxp, uint_t vec, uint64_t events) { mlxcx_event_queue_t *mleq = &mlxp->mlx_eqs[vec]; mutex_enter(&mleq->mleq_mtx); if (!mlxcx_eq_alloc_dma(mlxp, mleq)) { /* mlxcx_teardown_eqs() will clean this up */ mutex_exit(&mleq->mleq_mtx); return (B_FALSE); } mleq->mleq_mlx = mlxp; mleq->mleq_uar = &mlxp->mlx_uar; mleq->mleq_events = events; mleq->mleq_intr_index = vec; if (!mlxcx_cmd_create_eq(mlxp, mleq)) { /* mlxcx_teardown_eqs() will clean this up */ mutex_exit(&mleq->mleq_mtx); return (B_FALSE); } if (ddi_intr_enable(mlxp->mlx_intr_handles[vec]) != DDI_SUCCESS) { /* * mlxcx_teardown_eqs() will handle calling cmd_destroy_eq and * eq_rele_dma */ mutex_exit(&mleq->mleq_mtx); return (B_FALSE); } mleq->mleq_state |= MLXCX_EQ_INTR_ENABLED; mleq->mleq_state |= MLXCX_EQ_ATTACHING; mlxcx_arm_eq(mlxp, mleq); mutex_exit(&mleq->mleq_mtx); return (B_TRUE); } static void mlxcx_eq_set_attached(mlxcx_t *mlxp) { uint_t vec; mlxcx_event_queue_t *mleq; for (vec = 0; vec < mlxp->mlx_intr_count; ++vec) { mleq = &mlxp->mlx_eqs[vec]; mutex_enter(&mleq->mleq_mtx); mleq->mleq_state &= ~MLXCX_EQ_ATTACHING; mutex_exit(&mleq->mleq_mtx); } } static boolean_t mlxcx_setup_async_eqs(mlxcx_t *mlxp) { boolean_t ret; ret = mlxcx_setup_eq(mlxp, 0, (1ULL << MLXCX_EVENT_CMD_COMPLETION) | (1ULL << MLXCX_EVENT_PAGE_REQUEST) | (1ULL << MLXCX_EVENT_PORT_STATE) | (1ULL << MLXCX_EVENT_INTERNAL_ERROR) | (1ULL << MLXCX_EVENT_PORT_MODULE) | (1ULL << MLXCX_EVENT_SENDQ_DRAIN) | (1ULL << MLXCX_EVENT_LAST_WQE) | (1ULL << MLXCX_EVENT_CQ_ERROR) | (1ULL << MLXCX_EVENT_WQ_CATASTROPHE) | (1ULL << MLXCX_EVENT_PAGE_FAULT) | (1ULL << MLXCX_EVENT_WQ_INVALID_REQ) | (1ULL << MLXCX_EVENT_WQ_ACCESS_VIOL) | (1ULL << MLXCX_EVENT_NIC_VPORT) | (1ULL << MLXCX_EVENT_DOORBELL_CONGEST)); if (ret) mlxcx_cmd_eq_enable(mlxp); return (ret); } int mlxcx_cq_compare(const void *arg0, const void *arg1) { const mlxcx_completion_queue_t *left = arg0; const mlxcx_completion_queue_t *right = arg1; if (left->mlcq_num < right->mlcq_num) { return (-1); } if (left->mlcq_num > right->mlcq_num) { return (1); } return (0); } static boolean_t mlxcx_setup_eqs(mlxcx_t *mlxp) { uint_t i; mlxcx_event_queue_t *mleq; ASSERT3S(mlxp->mlx_intr_count, >, 0); for (i = mlxp->mlx_intr_cq0; i < mlxp->mlx_intr_count; ++i) { mleq = &mlxp->mlx_eqs[i]; mutex_enter(&mleq->mleq_mtx); if (!mlxcx_eq_alloc_dma(mlxp, mleq)) { mutex_exit(&mleq->mleq_mtx); return (B_FALSE); } mleq->mleq_uar = &mlxp->mlx_uar; if (!mlxcx_cmd_create_eq(mlxp, mleq)) { /* mlxcx_teardown() will handle calling eq_rele_dma */ mutex_exit(&mleq->mleq_mtx); return (B_FALSE); } if (mlxp->mlx_props.mldp_intrmod_period_usec != 0 && !mlxcx_cmd_set_int_mod(mlxp, i, mlxp->mlx_props.mldp_intrmod_period_usec)) { mutex_exit(&mleq->mleq_mtx); return (B_FALSE); } if (ddi_intr_enable(mlxp->mlx_intr_handles[i]) != DDI_SUCCESS) { mutex_exit(&mleq->mleq_mtx); return (B_FALSE); } mleq->mleq_state |= MLXCX_EQ_INTR_ENABLED; mlxcx_arm_eq(mlxp, mleq); mutex_exit(&mleq->mleq_mtx); } mlxp->mlx_next_eq = mlxp->mlx_intr_cq0; return (B_TRUE); } /* * Snapshot all of the hardware capabilities that we care about and then modify * the HCA capabilities to get things moving. */ static boolean_t mlxcx_init_caps(mlxcx_t *mlxp) { mlxcx_caps_t *c; mlxp->mlx_caps = c = kmem_zalloc(sizeof (mlxcx_caps_t), KM_SLEEP); if (!mlxcx_cmd_query_hca_cap(mlxp, MLXCX_HCA_CAP_GENERAL, MLXCX_HCA_CAP_MODE_CURRENT, &c->mlc_hca_cur)) { mlxcx_warn(mlxp, "failed to obtain current HCA general caps"); } if (!mlxcx_cmd_query_hca_cap(mlxp, MLXCX_HCA_CAP_GENERAL, MLXCX_HCA_CAP_MODE_MAX, &c->mlc_hca_max)) { mlxcx_warn(mlxp, "failed to obtain maximum HCA general caps"); } if (!mlxcx_cmd_query_hca_cap(mlxp, MLXCX_HCA_CAP_ETHERNET, MLXCX_HCA_CAP_MODE_CURRENT, &c->mlc_ether_cur)) { mlxcx_warn(mlxp, "failed to obtain current HCA eth caps"); } if (!mlxcx_cmd_query_hca_cap(mlxp, MLXCX_HCA_CAP_ETHERNET, MLXCX_HCA_CAP_MODE_MAX, &c->mlc_ether_max)) { mlxcx_warn(mlxp, "failed to obtain maximum HCA eth caps"); } if (!mlxcx_cmd_query_hca_cap(mlxp, MLXCX_HCA_CAP_NIC_FLOW, MLXCX_HCA_CAP_MODE_CURRENT, &c->mlc_nic_flow_cur)) { mlxcx_warn(mlxp, "failed to obtain current HCA flow caps"); } if (!mlxcx_cmd_query_hca_cap(mlxp, MLXCX_HCA_CAP_NIC_FLOW, MLXCX_HCA_CAP_MODE_MAX, &c->mlc_nic_flow_max)) { mlxcx_warn(mlxp, "failed to obtain maximum HCA flow caps"); } /* * Check the caps meet our requirements. */ const mlxcx_hca_cap_general_caps_t *gen = &c->mlc_hca_cur.mhc_general; if (gen->mlcap_general_log_pg_sz != 12) { mlxcx_warn(mlxp, "!hardware has page size != 4k " "(log_pg_sz = %u)", (uint_t)gen->mlcap_general_log_pg_sz); goto err; } if (gen->mlcap_general_cqe_version != 1) { mlxcx_warn(mlxp, "!hardware does not support CQE v1 " "(cqe_ver = %u)", (uint_t)gen->mlcap_general_cqe_version); goto err; } if (gen->mlcap_general_port_type != MLXCX_CAP_GENERAL_PORT_TYPE_ETHERNET) { mlxcx_warn(mlxp, "!hardware has non-ethernet ports"); goto err; } mlxp->mlx_nports = gen->mlcap_general_num_ports; mlxp->mlx_max_sdu = (1 << (gen->mlcap_general_log_max_msg & 0x1F)); c->mlc_max_tir = (1 << gen->mlcap_general_log_max_tir); c->mlc_checksum = get_bit32(c->mlc_ether_cur.mhc_eth.mlcap_eth_flags, MLXCX_ETH_CAP_CSUM_CAP); c->mlc_vxlan = get_bit32(c->mlc_ether_cur.mhc_eth.mlcap_eth_flags, MLXCX_ETH_CAP_TUNNEL_STATELESS_VXLAN); c->mlc_max_lso_size = (1 << get_bits32(c->mlc_ether_cur.mhc_eth. mlcap_eth_flags, MLXCX_ETH_CAP_MAX_LSO_CAP)); if (c->mlc_max_lso_size == 1) { c->mlc_max_lso_size = 0; c->mlc_lso = B_FALSE; } else { c->mlc_lso = B_TRUE; } c->mlc_max_rqt_size = (1 << get_bits32(c->mlc_ether_cur.mhc_eth. mlcap_eth_flags, MLXCX_ETH_CAP_RSS_IND_TBL_CAP)); if (!get_bit32(c->mlc_nic_flow_cur.mhc_flow.mlcap_flow_nic_rx. mlcap_flow_prop_flags, MLXCX_FLOW_CAP_PROPS_SUPPORT)) { mlxcx_warn(mlxp, "!hardware does not support rx flow tables"); goto err; } if (!get_bit32(c->mlc_nic_flow_cur.mhc_flow.mlcap_flow_nic_rx. mlcap_flow_prop_flags, MLXCX_FLOW_CAP_PROPS_MODIFY)) { mlxcx_warn(mlxp, "!hardware does not support modifying rx " "flow table entries"); goto err; } c->mlc_max_rx_ft_shift = c->mlc_nic_flow_cur.mhc_flow.mlcap_flow_nic_rx. mlcap_flow_prop_log_max_ft_size; c->mlc_max_rx_flows = (1 << c->mlc_nic_flow_cur.mhc_flow. mlcap_flow_nic_rx.mlcap_flow_prop_log_max_flow); c->mlc_max_rx_ft = (1 << c->mlc_nic_flow_cur.mhc_flow. mlcap_flow_nic_rx.mlcap_flow_prop_log_max_ft_num); c->mlc_max_rx_fe_dest = (1 << c->mlc_nic_flow_cur.mhc_flow. mlcap_flow_nic_rx.mlcap_flow_prop_log_max_destination); return (B_TRUE); err: kmem_free(mlxp->mlx_caps, sizeof (mlxcx_caps_t)); return (B_FALSE); } static int mlxcx_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) { mlxcx_t *mlxp; if (cmd != DDI_DETACH) return (DDI_FAILURE); mlxp = ddi_get_driver_private(dip); if (mlxp == NULL) { mlxcx_warn(NULL, "asked to detach, but missing instance " "private data"); return (DDI_FAILURE); } if (mlxp->mlx_attach & MLXCX_ATTACH_MAC_HDL) { if (mac_unregister(mlxp->mlx_mac_hdl) != DDI_SUCCESS) { return (DDI_FAILURE); } mlxp->mlx_attach &= ~MLXCX_ATTACH_MAC_HDL; } mlxcx_teardown(mlxp); return (DDI_SUCCESS); } static size_t mlxcx_calc_rx_ngroups(mlxcx_t *mlxp) { size_t ngroups = mlxp->mlx_props.mldp_rx_ngroups_large + mlxp->mlx_props.mldp_rx_ngroups_small; size_t tirlim, flowlim, gflowlim; tirlim = mlxp->mlx_caps->mlc_max_tir / MLXCX_TIRS_PER_GROUP; if (tirlim < ngroups) { mlxcx_note(mlxp, "limiting number of rx groups to %u based " "on number of TIRs available", tirlim); ngroups = tirlim; } flowlim = (1 << mlxp->mlx_caps->mlc_max_rx_ft_shift) - 2; if (flowlim < ngroups) { mlxcx_note(mlxp, "limiting number of rx groups to %u based " "on max size of RX flow tables", flowlim); ngroups = flowlim; } /* * Restrict the number of groups not to exceed the max flow * table number from the devices capabilities. * There is one root table entry per port and 2 entries per * group. */ flowlim = (mlxp->mlx_caps->mlc_max_rx_ft - mlxp->mlx_nports) / 2; if (flowlim < ngroups) { mlxcx_note(mlxp, "limiting number of rx groups to %u based " "on max number of RX flow tables", flowlim); ngroups = flowlim; } do { gflowlim = mlxp->mlx_caps->mlc_max_rx_flows - 16 * ngroups - 2; if (gflowlim < ngroups) { mlxcx_note(mlxp, "limiting number of rx groups to %u " "based on max total RX flows", gflowlim); --ngroups; } } while (gflowlim < ngroups); return (ngroups); } static int mlxcx_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) { mlxcx_t *mlxp; char tq_name[TASKQ_NAMELEN]; uint_t i; int inst, ret; if (cmd != DDI_ATTACH) return (DDI_FAILURE); inst = ddi_get_instance(dip); ret = ddi_soft_state_zalloc(mlxcx_softstate, inst); if (ret != 0) return (ret); mlxp = ddi_get_soft_state(mlxcx_softstate, inst); if (mlxp == NULL) return (DDI_FAILURE); mlxp->mlx_dip = dip; mlxp->mlx_inst = inst; ddi_set_driver_private(dip, mlxp); mlxcx_load_props(mlxp); mlxcx_fm_init(mlxp); mlxp->mlx_attach |= MLXCX_ATTACH_FM; if (pci_config_setup(mlxp->mlx_dip, &mlxp->mlx_cfg_handle) != DDI_SUCCESS) { mlxcx_warn(mlxp, "failed to initial PCI config space"); goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_PCI_CONFIG; if (!mlxcx_regs_map(mlxp)) { goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_REGS; if (!mlxcx_cmd_queue_init(mlxp)) { goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_CMD; if (!mlxcx_cmd_enable_hca(mlxp)) { goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_ENABLE_HCA; if (!mlxcx_check_issi(mlxp)) { goto err; } /* * We have to get our interrupts now so we know what priority to * create pagemtx with. */ if (!mlxcx_intr_setup(mlxp)) { goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_INTRS; mutex_init(&mlxp->mlx_pagemtx, NULL, MUTEX_DRIVER, DDI_INTR_PRI(mlxp->mlx_intr_pri)); avl_create(&mlxp->mlx_pages, mlxcx_page_compare, sizeof (mlxcx_dev_page_t), offsetof(mlxcx_dev_page_t, mxdp_tree)); mlxp->mlx_attach |= MLXCX_ATTACH_PAGE_LIST; /* * Taskq for asynchronous events which may interact with the HCA * via the command interface. Single threaded FIFO. */ (void) snprintf(tq_name, sizeof (tq_name), "%s_async_%d", ddi_driver_name(mlxp->mlx_dip), mlxp->mlx_inst); mlxp->mlx_async_tq = taskq_create(tq_name, 1, minclsyspri, 1, INT_MAX, TASKQ_PREPOPULATE); /* * Initialize any pre-allocated taskq param structs. */ for (i = 0; i <= MLXCX_FUNC_ID_MAX; i++) { mlxp->mlx_npages_req[i].mla_mlx = mlxp; mutex_init(&mlxp->mlx_npages_req[i].mla_mtx, NULL, MUTEX_DRIVER, DDI_INTR_PRI(mlxp->mlx_async_intr_pri)); } mlxp->mlx_attach |= MLXCX_ATTACH_ASYNC_TQ; if (!mlxcx_init_pages(mlxp, MLXCX_QUERY_PAGES_OPMOD_BOOT)) { goto err; } if (!mlxcx_init_caps(mlxp)) { goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_CAPS; if (!mlxcx_init_pages(mlxp, MLXCX_QUERY_PAGES_OPMOD_INIT)) { goto err; } if (!mlxcx_cmd_init_hca(mlxp)) { goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_INIT_HCA; if (!mlxcx_cmd_set_driver_version(mlxp, MLXCX_DRIVER_VERSION)) { goto err; } /* * The User Access Region (UAR) is needed so we can ring EQ and CQ * doorbells. */ if (!mlxcx_cmd_alloc_uar(mlxp, &mlxp->mlx_uar)) { goto err; } for (i = 0; i < MLXCX_BF_PER_UAR; ++i) { mutex_init(&mlxp->mlx_uar.mlu_bf[i].mbf_mtx, NULL, MUTEX_DRIVER, DDI_INTR_PRI(mlxp->mlx_intr_pri)); } mlxp->mlx_attach |= MLXCX_ATTACH_UAR_PD_TD; /* * Set up asynchronous event queue which handles control type events * like PAGE_REQUEST and CMD completion events. * * This will enable and arm the interrupt on EQ 0. Note that only page * reqs and cmd completions will be handled until we call * mlxcx_eq_set_attached further down (this way we don't need an extra * set of locks over the mlxcx_t sub-structs not allocated yet) */ if (!mlxcx_setup_async_eqs(mlxp)) { goto err; } /* * Allocate a protection and transport domain. These don't really do * anything for us (they're IB concepts), but we need to give their * ID numbers in other commands. */ if (!mlxcx_cmd_alloc_pd(mlxp, &mlxp->mlx_pd)) { goto err; } if (!mlxcx_cmd_alloc_tdom(mlxp, &mlxp->mlx_tdom)) { goto err; } /* * Fetch the "reserved" lkey that lets us give linear addresses in * work queue entries, rather than having to mess with the NIC's * internal MMU. */ if (!mlxcx_cmd_query_special_ctxs(mlxp)) { goto err; } /* * Query our port information and current state, populate the * mlxcx_port_t structs. * * This also sets up the root flow tables and flow groups. */ if (!mlxcx_setup_ports(mlxp)) { goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_PORTS; mlxcx_load_model_props(mlxp); /* * Set up, enable and arm the rest of the interrupt EQs which will * service events from CQs. * * The MLXCX_ATTACH_INTRS flag covers checking if these need to be * cleaned up. */ if (!mlxcx_setup_eqs(mlxp)) { goto err; } /* Completion queues */ list_create(&mlxp->mlx_cqs, sizeof (mlxcx_completion_queue_t), offsetof(mlxcx_completion_queue_t, mlcq_entry)); mlxp->mlx_attach |= MLXCX_ATTACH_CQS; /* Work queues (send queues, receive queues) */ list_create(&mlxp->mlx_wqs, sizeof (mlxcx_work_queue_t), offsetof(mlxcx_work_queue_t, mlwq_entry)); mlxp->mlx_attach |= MLXCX_ATTACH_WQS; /* * Construct our arrays of mlxcx_ring_group_ts, which represent the * "groups" we advertise to MAC. */ mlxp->mlx_rx_ngroups = mlxcx_calc_rx_ngroups(mlxp); mlxp->mlx_rx_groups_size = mlxp->mlx_rx_ngroups * sizeof (mlxcx_ring_group_t); mlxp->mlx_rx_groups = kmem_zalloc(mlxp->mlx_rx_groups_size, KM_SLEEP); mlxp->mlx_tx_ngroups = mlxp->mlx_props.mldp_tx_ngroups; mlxp->mlx_tx_groups_size = mlxp->mlx_tx_ngroups * sizeof (mlxcx_ring_group_t); mlxp->mlx_tx_groups = kmem_zalloc(mlxp->mlx_tx_groups_size, KM_SLEEP); mlxp->mlx_attach |= MLXCX_ATTACH_GROUPS; /* * Sets up the free/busy buffers list for keeping track of packet * buffers. */ if (!mlxcx_setup_bufs(mlxp)) goto err; mlxp->mlx_attach |= MLXCX_ATTACH_BUFS; /* * Before we tell MAC about our rings/groups, we need to do enough * setup on them to be sure about the numbers and configuration that * we have. This will do basically everything short of allocating * packet buffers and starting the rings up. */ for (i = 0; i < mlxp->mlx_tx_ngroups; ++i) { if (!mlxcx_tx_group_setup(mlxp, &mlxp->mlx_tx_groups[i])) goto err; } for (i = 0; i < mlxp->mlx_rx_ngroups; ++i) { if (!mlxcx_rx_group_setup(mlxp, &mlxp->mlx_rx_groups[i])) goto err; } /* * Set up periodic fault check timers which check the queue states, * set up should be after all the queues have been initialized and * consequently the teardown of timers must happen before * queue teardown. */ if (!mlxcx_setup_checktimers(mlxp)) { goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_CHKTIMERS; /* * Some devices may not have a working temperature sensor; however, * there isn't a great way for us to know. We shouldn't fail attach if * this doesn't work. */ if (mlxcx_setup_sensors(mlxp)) { mlxp->mlx_attach |= MLXCX_ATTACH_SENSORS; } /* * Finally, tell MAC that we exist! */ if (!mlxcx_register_mac(mlxp)) { goto err; } mlxp->mlx_attach |= MLXCX_ATTACH_MAC_HDL; /* * This tells the interrupt handlers they can start processing events * other than cmd completions and page requests. */ mlxcx_eq_set_attached(mlxp); return (DDI_SUCCESS); err: mlxcx_teardown(mlxp); return (DDI_FAILURE); } static struct cb_ops mlxcx_cb_ops = { .cb_open = nulldev, .cb_close = nulldev, .cb_strategy = nodev, .cb_print = nodev, .cb_dump = nodev, .cb_read = nodev, .cb_write = nodev, .cb_ioctl = nodev, .cb_devmap = nodev, .cb_mmap = nodev, .cb_segmap = nodev, .cb_chpoll = nochpoll, .cb_prop_op = ddi_prop_op, .cb_flag = D_MP, .cb_rev = CB_REV, .cb_aread = nodev, .cb_awrite = nodev }; static struct dev_ops mlxcx_dev_ops = { .devo_rev = DEVO_REV, .devo_refcnt = 0, .devo_getinfo = NULL, .devo_identify = nulldev, .devo_probe = nulldev, .devo_attach = mlxcx_attach, .devo_detach = mlxcx_detach, .devo_reset = nodev, .devo_quiesce = ddi_quiesce_not_supported, .devo_cb_ops = &mlxcx_cb_ops }; static struct modldrv mlxcx_modldrv = { .drv_modops = &mod_driverops, .drv_linkinfo = "Mellanox Connect-X 4/5/6", .drv_dev_ops = &mlxcx_dev_ops }; static struct modlinkage mlxcx_modlinkage = { .ml_rev = MODREV_1, .ml_linkage = { &mlxcx_modldrv, NULL } }; int _init(void) { int ret; ret = ddi_soft_state_init(&mlxcx_softstate, sizeof (mlxcx_t), 0); if (ret != 0) { return (ret); } mac_init_ops(&mlxcx_dev_ops, MLXCX_MODULE_NAME); if ((ret = mod_install(&mlxcx_modlinkage)) != DDI_SUCCESS) { mac_fini_ops(&mlxcx_dev_ops); ddi_soft_state_fini(&mlxcx_softstate); return (ret); } return (DDI_SUCCESS); } int _info(struct modinfo *modinfop) { return (mod_info(&mlxcx_modlinkage, modinfop)); } int _fini(void) { int ret; if ((ret = mod_remove(&mlxcx_modlinkage)) != DDI_SUCCESS) { return (ret); } mac_fini_ops(&mlxcx_dev_ops); ddi_soft_state_fini(&mlxcx_softstate); return (DDI_SUCCESS); }