| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Roland Dreier | 3045 | 36.45% | 3 | 3.57% |
| Jack Morgenstein | 2659 | 31.83% | 19 | 22.62% |
| Matan Barak | 1036 | 12.40% | 5 | 5.95% |
| Yevgeny Petrilin | 728 | 8.71% | 9 | 10.71% |
| Or Gerlitz | 178 | 2.13% | 3 | 3.57% |
| Ido Shamay | 129 | 1.54% | 2 | 2.38% |
| Moni Shoua | 107 | 1.28% | 1 | 1.19% |
| Dotan Barak | 73 | 0.87% | 2 | 2.38% |
| Yishai Hadas | 58 | 0.69% | 5 | 5.95% |
| Amir Vadai | 56 | 0.67% | 2 | 2.38% |
| Arputham Benjamin | 49 | 0.59% | 1 | 1.19% |
| Rony Efraim | 47 | 0.56% | 2 | 2.38% |
| Marcel Apfelbaum | 32 | 0.38% | 3 | 3.57% |
| Eugenia Emantayev | 31 | 0.37% | 2 | 2.38% |
| Stephen Hemminger | 25 | 0.30% | 1 | 1.19% |
| Joe Perches | 19 | 0.23% | 1 | 1.19% |
| Eli Cohen | 15 | 0.18% | 2 | 2.38% |
| Huy Nguyen | 14 | 0.17% | 1 | 1.19% |
| Yuval Atias | 12 | 0.14% | 1 | 1.19% |
| Carol L Soto | 5 | 0.06% | 1 | 1.19% |
| Axel Lin | 5 | 0.06% | 1 | 1.19% |
| Linus Torvalds | 4 | 0.05% | 2 | 2.38% |
| Nitesh Narayan Lal | 3 | 0.04% | 1 | 1.19% |
| Nathan Chancellor | 3 | 0.04% | 1 | 1.19% |
| Paul Gortmaker | 3 | 0.04% | 1 | 1.19% |
| Al Viro | 3 | 0.04% | 1 | 1.19% |
| Sebastian Ott | 2 | 0.02% | 1 | 1.19% |
| Gustavo A. R. Silva | 2 | 0.02% | 1 | 1.19% |
| Kees Cook | 2 | 0.02% | 1 | 1.19% |
| Alexander Duyck | 2 | 0.02% | 1 | 1.19% |
| Linus Torvalds (pre-git) | 2 | 0.02% | 1 | 1.19% |
| Tariq Toukan | 2 | 0.02% | 2 | 2.38% |
| Allen Pais | 1 | 0.01% | 1 | 1.19% |
| Moshe Lazer | 1 | 0.01% | 1 | 1.19% |
| Adam Buchbinder | 1 | 0.01% | 1 | 1.19% |
| Andrew Morton | 1 | 0.01% | 1 | 1.19% |
| Total | 8355 | 84 |
/* * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved. * Copyright (c) 2005, 2006, 2007 Cisco Systems, 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. */ #include <linux/interrupt.h> #include <linux/slab.h> #include <linux/export.h> #include <linux/mm.h> #include <linux/dma-mapping.h> #include <linux/mlx4/cmd.h> #include <linux/cpu_rmap.h> #include "mlx4.h" #include "fw.h" enum { MLX4_IRQNAME_SIZE = 32 }; enum { MLX4_NUM_ASYNC_EQE = 0x100, MLX4_NUM_SPARE_EQE = 0x80, MLX4_EQ_ENTRY_SIZE = 0x20 }; #define MLX4_EQ_STATUS_OK ( 0 << 28) #define MLX4_EQ_STATUS_WRITE_FAIL (10 << 28) #define MLX4_EQ_OWNER_SW ( 0 << 24) #define MLX4_EQ_OWNER_HW ( 1 << 24) #define MLX4_EQ_FLAG_EC ( 1 << 18) #define MLX4_EQ_FLAG_OI ( 1 << 17) #define MLX4_EQ_STATE_ARMED ( 9 << 8) #define MLX4_EQ_STATE_FIRED (10 << 8) #define MLX4_EQ_STATE_ALWAYS_ARMED (11 << 8) #define MLX4_ASYNC_EVENT_MASK ((1ull << MLX4_EVENT_TYPE_PATH_MIG) | \ (1ull << MLX4_EVENT_TYPE_COMM_EST) | \ (1ull << MLX4_EVENT_TYPE_SQ_DRAINED) | \ (1ull << MLX4_EVENT_TYPE_CQ_ERROR) | \ (1ull << MLX4_EVENT_TYPE_WQ_CATAS_ERROR) | \ (1ull << MLX4_EVENT_TYPE_EEC_CATAS_ERROR) | \ (1ull << MLX4_EVENT_TYPE_PATH_MIG_FAILED) | \ (1ull << MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR) | \ (1ull << MLX4_EVENT_TYPE_WQ_ACCESS_ERROR) | \ (1ull << MLX4_EVENT_TYPE_PORT_CHANGE) | \ (1ull << MLX4_EVENT_TYPE_ECC_DETECT) | \ (1ull << MLX4_EVENT_TYPE_SRQ_CATAS_ERROR) | \ (1ull << MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE) | \ (1ull << MLX4_EVENT_TYPE_SRQ_LIMIT) | \ (1ull << MLX4_EVENT_TYPE_CMD) | \ (1ull << MLX4_EVENT_TYPE_OP_REQUIRED) | \ (1ull << MLX4_EVENT_TYPE_COMM_CHANNEL) | \ (1ull << MLX4_EVENT_TYPE_FLR_EVENT) | \ (1ull << MLX4_EVENT_TYPE_FATAL_WARNING)) static u64 get_async_ev_mask(struct mlx4_dev *dev) { u64 async_ev_mask = MLX4_ASYNC_EVENT_MASK; if (dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV) async_ev_mask |= (1ull << MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT); if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT) async_ev_mask |= (1ull << MLX4_EVENT_TYPE_RECOVERABLE_ERROR_EVENT); return async_ev_mask; } static void eq_set_ci(struct mlx4_eq *eq, int req_not) { __raw_writel((__force u32) cpu_to_be32((eq->cons_index & 0xffffff) | req_not << 31), eq->doorbell); /* We still want ordering, just not swabbing, so add a barrier */ wmb(); } static struct mlx4_eqe *get_eqe(struct mlx4_eq *eq, u32 entry, u8 eqe_factor, u8 eqe_size) { /* (entry & (eq->nent - 1)) gives us a cyclic array */ unsigned long offset = (entry & (eq->nent - 1)) * eqe_size; /* CX3 is capable of extending the EQE from 32 to 64 bytes with * strides of 64B,128B and 256B. * When 64B EQE is used, the first (in the lower addresses) * 32 bytes in the 64 byte EQE are reserved and the next 32 bytes * contain the legacy EQE information. * In all other cases, the first 32B contains the legacy EQE info. */ return eq->page_list[offset / PAGE_SIZE].buf + (offset + (eqe_factor ? MLX4_EQ_ENTRY_SIZE : 0)) % PAGE_SIZE; } static struct mlx4_eqe *next_eqe_sw(struct mlx4_eq *eq, u8 eqe_factor, u8 size) { struct mlx4_eqe *eqe = get_eqe(eq, eq->cons_index, eqe_factor, size); return !!(eqe->owner & 0x80) ^ !!(eq->cons_index & eq->nent) ? NULL : eqe; } static struct mlx4_eqe *next_slave_event_eqe(struct mlx4_slave_event_eq *slave_eq) { struct mlx4_eqe *eqe = &slave_eq->event_eqe[slave_eq->cons & (SLAVE_EVENT_EQ_SIZE - 1)]; return (!!(eqe->owner & 0x80) ^ !!(slave_eq->cons & SLAVE_EVENT_EQ_SIZE)) ? eqe : NULL; } void mlx4_gen_slave_eqe(struct work_struct *work) { struct mlx4_mfunc_master_ctx *master = container_of(work, struct mlx4_mfunc_master_ctx, slave_event_work); struct mlx4_mfunc *mfunc = container_of(master, struct mlx4_mfunc, master); struct mlx4_priv *priv = container_of(mfunc, struct mlx4_priv, mfunc); struct mlx4_dev *dev = &priv->dev; struct mlx4_slave_event_eq *slave_eq = &mfunc->master.slave_eq; struct mlx4_eqe *eqe; u8 slave; int i, phys_port, slave_port; for (eqe = next_slave_event_eqe(slave_eq); eqe; eqe = next_slave_event_eqe(slave_eq)) { slave = eqe->slave_id; if (eqe->type == MLX4_EVENT_TYPE_PORT_CHANGE && eqe->subtype == MLX4_PORT_CHANGE_SUBTYPE_DOWN && mlx4_is_bonded(dev)) { struct mlx4_port_cap port_cap; if (!mlx4_QUERY_PORT(dev, 1, &port_cap) && port_cap.link_state) goto consume; if (!mlx4_QUERY_PORT(dev, 2, &port_cap) && port_cap.link_state) goto consume; } /* All active slaves need to receive the event */ if (slave == ALL_SLAVES) { for (i = 0; i <= dev->persist->num_vfs; i++) { phys_port = 0; if (eqe->type == MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT && eqe->subtype == MLX4_DEV_PMC_SUBTYPE_PORT_INFO) { phys_port = eqe->event.port_mgmt_change.port; slave_port = mlx4_phys_to_slave_port(dev, i, phys_port); if (slave_port < 0) /* VF doesn't have this port */ continue; eqe->event.port_mgmt_change.port = slave_port; } if (mlx4_GEN_EQE(dev, i, eqe)) mlx4_warn(dev, "Failed to generate event for slave %d\n", i); if (phys_port) eqe->event.port_mgmt_change.port = phys_port; } } else { if (mlx4_GEN_EQE(dev, slave, eqe)) mlx4_warn(dev, "Failed to generate event for slave %d\n", slave); } consume: ++slave_eq->cons; } } static void slave_event(struct mlx4_dev *dev, u8 slave, struct mlx4_eqe *eqe) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_slave_event_eq *slave_eq = &priv->mfunc.master.slave_eq; struct mlx4_eqe *s_eqe; unsigned long flags; spin_lock_irqsave(&slave_eq->event_lock, flags); s_eqe = &slave_eq->event_eqe[slave_eq->prod & (SLAVE_EVENT_EQ_SIZE - 1)]; if ((!!(s_eqe->owner & 0x80)) ^ (!!(slave_eq->prod & SLAVE_EVENT_EQ_SIZE))) { mlx4_warn(dev, "Master failed to generate an EQE for slave: %d. No free EQE on slave events queue\n", slave); spin_unlock_irqrestore(&slave_eq->event_lock, flags); return; } memcpy(s_eqe, eqe, sizeof(struct mlx4_eqe) - 1); s_eqe->slave_id = slave; /* ensure all information is written before setting the ownersip bit */ dma_wmb(); s_eqe->owner = !!(slave_eq->prod & SLAVE_EVENT_EQ_SIZE) ? 0x0 : 0x80; ++slave_eq->prod; queue_work(priv->mfunc.master.comm_wq, &priv->mfunc.master.slave_event_work); spin_unlock_irqrestore(&slave_eq->event_lock, flags); } static void mlx4_slave_event(struct mlx4_dev *dev, int slave, struct mlx4_eqe *eqe) { struct mlx4_priv *priv = mlx4_priv(dev); if (slave < 0 || slave > dev->persist->num_vfs || slave == dev->caps.function || !priv->mfunc.master.slave_state[slave].active) return; slave_event(dev, slave, eqe); } #if defined(CONFIG_SMP) static void mlx4_set_eq_affinity_hint(struct mlx4_priv *priv, int vec) { int hint_err; struct mlx4_dev *dev = &priv->dev; struct mlx4_eq *eq = &priv->eq_table.eq[vec]; if (!cpumask_available(eq->affinity_mask) || cpumask_empty(eq->affinity_mask)) return; hint_err = irq_update_affinity_hint(eq->irq, eq->affinity_mask); if (hint_err) mlx4_warn(dev, "irq_update_affinity_hint failed, err %d\n", hint_err); } #endif int mlx4_gen_pkey_eqe(struct mlx4_dev *dev, int slave, u8 port) { struct mlx4_eqe eqe; struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_slave_state *s_slave = &priv->mfunc.master.slave_state[slave]; if (!s_slave->active) return 0; memset(&eqe, 0, sizeof(eqe)); eqe.type = MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT; eqe.subtype = MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE; eqe.event.port_mgmt_change.port = mlx4_phys_to_slave_port(dev, slave, port); return mlx4_GEN_EQE(dev, slave, &eqe); } EXPORT_SYMBOL(mlx4_gen_pkey_eqe); int mlx4_gen_guid_change_eqe(struct mlx4_dev *dev, int slave, u8 port) { struct mlx4_eqe eqe; /*don't send if we don't have the that slave */ if (dev->persist->num_vfs < slave) return 0; memset(&eqe, 0, sizeof(eqe)); eqe.type = MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT; eqe.subtype = MLX4_DEV_PMC_SUBTYPE_GUID_INFO; eqe.event.port_mgmt_change.port = mlx4_phys_to_slave_port(dev, slave, port); return mlx4_GEN_EQE(dev, slave, &eqe); } EXPORT_SYMBOL(mlx4_gen_guid_change_eqe); int mlx4_gen_port_state_change_eqe(struct mlx4_dev *dev, int slave, u8 port, u8 port_subtype_change) { struct mlx4_eqe eqe; u8 slave_port = mlx4_phys_to_slave_port(dev, slave, port); /*don't send if we don't have the that slave */ if (dev->persist->num_vfs < slave) return 0; memset(&eqe, 0, sizeof(eqe)); eqe.type = MLX4_EVENT_TYPE_PORT_CHANGE; eqe.subtype = port_subtype_change; eqe.event.port_change.port = cpu_to_be32(slave_port << 28); mlx4_dbg(dev, "%s: sending: %d to slave: %d on port: %d\n", __func__, port_subtype_change, slave, port); return mlx4_GEN_EQE(dev, slave, &eqe); } EXPORT_SYMBOL(mlx4_gen_port_state_change_eqe); enum slave_port_state mlx4_get_slave_port_state(struct mlx4_dev *dev, int slave, u8 port) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_slave_state *s_state = priv->mfunc.master.slave_state; struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave); if (slave >= dev->num_slaves || port > dev->caps.num_ports || port <= 0 || !test_bit(port - 1, actv_ports.ports)) { pr_err("%s: Error: asking for slave:%d, port:%d\n", __func__, slave, port); return SLAVE_PORT_DOWN; } return s_state[slave].port_state[port]; } EXPORT_SYMBOL(mlx4_get_slave_port_state); static int mlx4_set_slave_port_state(struct mlx4_dev *dev, int slave, u8 port, enum slave_port_state state) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_slave_state *s_state = priv->mfunc.master.slave_state; struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave); if (slave >= dev->num_slaves || port > dev->caps.num_ports || port <= 0 || !test_bit(port - 1, actv_ports.ports)) { pr_err("%s: Error: asking for slave:%d, port:%d\n", __func__, slave, port); return -1; } s_state[slave].port_state[port] = state; return 0; } static void set_all_slave_state(struct mlx4_dev *dev, u8 port, int event) { int i; enum slave_port_gen_event gen_event; struct mlx4_slaves_pport slaves_pport = mlx4_phys_to_slaves_pport(dev, port); for (i = 0; i < dev->persist->num_vfs + 1; i++) if (test_bit(i, slaves_pport.slaves)) set_and_calc_slave_port_state(dev, i, port, event, &gen_event); } /************************************************************************** The function get as input the new event to that port, and according to the prev state change the slave's port state. The events are: MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN, MLX4_PORT_STATE_DEV_EVENT_PORT_UP MLX4_PORT_STATE_IB_EVENT_GID_VALID MLX4_PORT_STATE_IB_EVENT_GID_INVALID ***************************************************************************/ int set_and_calc_slave_port_state(struct mlx4_dev *dev, int slave, u8 port, int event, enum slave_port_gen_event *gen_event) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_slave_state *ctx = NULL; unsigned long flags; int ret = -1; struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave); enum slave_port_state cur_state = mlx4_get_slave_port_state(dev, slave, port); *gen_event = SLAVE_PORT_GEN_EVENT_NONE; if (slave >= dev->num_slaves || port > dev->caps.num_ports || port <= 0 || !test_bit(port - 1, actv_ports.ports)) { pr_err("%s: Error: asking for slave:%d, port:%d\n", __func__, slave, port); return ret; } ctx = &priv->mfunc.master.slave_state[slave]; spin_lock_irqsave(&ctx->lock, flags); switch (cur_state) { case SLAVE_PORT_DOWN: if (MLX4_PORT_STATE_DEV_EVENT_PORT_UP == event) mlx4_set_slave_port_state(dev, slave, port, SLAVE_PENDING_UP); break; case SLAVE_PENDING_UP: if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN == event) mlx4_set_slave_port_state(dev, slave, port, SLAVE_PORT_DOWN); else if (MLX4_PORT_STATE_IB_PORT_STATE_EVENT_GID_VALID == event) { mlx4_set_slave_port_state(dev, slave, port, SLAVE_PORT_UP); *gen_event = SLAVE_PORT_GEN_EVENT_UP; } break; case SLAVE_PORT_UP: if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN == event) { mlx4_set_slave_port_state(dev, slave, port, SLAVE_PORT_DOWN); *gen_event = SLAVE_PORT_GEN_EVENT_DOWN; } else if (MLX4_PORT_STATE_IB_EVENT_GID_INVALID == event) { mlx4_set_slave_port_state(dev, slave, port, SLAVE_PENDING_UP); *gen_event = SLAVE_PORT_GEN_EVENT_DOWN; } break; default: pr_err("%s: BUG!!! UNKNOWN state: slave:%d, port:%d\n", __func__, slave, port); goto out; } ret = mlx4_get_slave_port_state(dev, slave, port); out: spin_unlock_irqrestore(&ctx->lock, flags); return ret; } EXPORT_SYMBOL(set_and_calc_slave_port_state); int mlx4_gen_slaves_port_mgt_ev(struct mlx4_dev *dev, u8 port, int attr) { struct mlx4_eqe eqe; memset(&eqe, 0, sizeof(eqe)); eqe.type = MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT; eqe.subtype = MLX4_DEV_PMC_SUBTYPE_PORT_INFO; eqe.event.port_mgmt_change.port = port; eqe.event.port_mgmt_change.params.port_info.changed_attr = cpu_to_be32((u32) attr); slave_event(dev, ALL_SLAVES, &eqe); return 0; } EXPORT_SYMBOL(mlx4_gen_slaves_port_mgt_ev); void mlx4_master_handle_slave_flr(struct work_struct *work) { struct mlx4_mfunc_master_ctx *master = container_of(work, struct mlx4_mfunc_master_ctx, slave_flr_event_work); struct mlx4_mfunc *mfunc = container_of(master, struct mlx4_mfunc, master); struct mlx4_priv *priv = container_of(mfunc, struct mlx4_priv, mfunc); struct mlx4_dev *dev = &priv->dev; struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state; int i; int err; unsigned long flags; mlx4_dbg(dev, "mlx4_handle_slave_flr\n"); for (i = 0 ; i < dev->num_slaves; i++) { if (MLX4_COMM_CMD_FLR == slave_state[i].last_cmd) { mlx4_dbg(dev, "mlx4_handle_slave_flr: clean slave: %d\n", i); /* In case of 'Reset flow' FLR can be generated for * a slave before mlx4_load_one is done. * make sure interface is up before trying to delete * slave resources which weren't allocated yet. */ if (dev->persist->interface_state & MLX4_INTERFACE_STATE_UP) mlx4_delete_all_resources_for_slave(dev, i); /*return the slave to running mode*/ spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags); slave_state[i].last_cmd = MLX4_COMM_CMD_RESET; slave_state[i].is_slave_going_down = 0; spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags); /*notify the FW:*/ err = mlx4_cmd(dev, 0, i, 0, MLX4_CMD_INFORM_FLR_DONE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); if (err) mlx4_warn(dev, "Failed to notify FW on FLR done (slave:%d)\n", i); } } } static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_eqe *eqe; int cqn; int eqes_found = 0; int set_ci = 0; int port; int slave = 0; int ret; u32 flr_slave; u8 update_slave_state; int i; enum slave_port_gen_event gen_event; unsigned long flags; struct mlx4_vport_state *s_info; int eqe_size = dev->caps.eqe_size; while ((eqe = next_eqe_sw(eq, dev->caps.eqe_factor, eqe_size))) { /* * Make sure we read EQ entry contents after we've * checked the ownership bit. */ dma_rmb(); switch (eqe->type) { case MLX4_EVENT_TYPE_COMP: cqn = be32_to_cpu(eqe->event.comp.cqn) & 0xffffff; mlx4_cq_completion(dev, cqn); break; case MLX4_EVENT_TYPE_PATH_MIG: case MLX4_EVENT_TYPE_COMM_EST: case MLX4_EVENT_TYPE_SQ_DRAINED: case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE: case MLX4_EVENT_TYPE_WQ_CATAS_ERROR: case MLX4_EVENT_TYPE_PATH_MIG_FAILED: case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR: case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR: mlx4_dbg(dev, "event %d arrived\n", eqe->type); if (mlx4_is_master(dev)) { /* forward only to slave owning the QP */ ret = mlx4_get_slave_from_resource_id(dev, RES_QP, be32_to_cpu(eqe->event.qp.qpn) & 0xffffff, &slave); if (ret && ret != -ENOENT) { mlx4_dbg(dev, "QP event %02x(%02x) on EQ %d at index %u: could not get slave id (%d)\n", eqe->type, eqe->subtype, eq->eqn, eq->cons_index, ret); break; } if (!ret && slave != dev->caps.function) { mlx4_slave_event(dev, slave, eqe); break; } } mlx4_qp_event(dev, be32_to_cpu(eqe->event.qp.qpn) & 0xffffff, eqe->type); break; case MLX4_EVENT_TYPE_SRQ_LIMIT: mlx4_dbg(dev, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT. srq_no=0x%x, eq 0x%x\n", __func__, be32_to_cpu(eqe->event.srq.srqn), eq->eqn); fallthrough; case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR: if (mlx4_is_master(dev)) { /* forward only to slave owning the SRQ */ ret = mlx4_get_slave_from_resource_id(dev, RES_SRQ, be32_to_cpu(eqe->event.srq.srqn) & 0xffffff, &slave); if (ret && ret != -ENOENT) { mlx4_warn(dev, "SRQ event %02x(%02x) on EQ %d at index %u: could not get slave id (%d)\n", eqe->type, eqe->subtype, eq->eqn, eq->cons_index, ret); break; } if (eqe->type == MLX4_EVENT_TYPE_SRQ_CATAS_ERROR) mlx4_warn(dev, "%s: slave:%d, srq_no:0x%x, event: %02x(%02x)\n", __func__, slave, be32_to_cpu(eqe->event.srq.srqn), eqe->type, eqe->subtype); if (!ret && slave != dev->caps.function) { if (eqe->type == MLX4_EVENT_TYPE_SRQ_CATAS_ERROR) mlx4_warn(dev, "%s: sending event %02x(%02x) to slave:%d\n", __func__, eqe->type, eqe->subtype, slave); mlx4_slave_event(dev, slave, eqe); break; } } mlx4_srq_event(dev, be32_to_cpu(eqe->event.srq.srqn) & 0xffffff, eqe->type); break; case MLX4_EVENT_TYPE_CMD: mlx4_cmd_event(dev, be16_to_cpu(eqe->event.cmd.token), eqe->event.cmd.status, be64_to_cpu(eqe->event.cmd.out_param)); break; case MLX4_EVENT_TYPE_PORT_CHANGE: { struct mlx4_slaves_pport slaves_port; port = be32_to_cpu(eqe->event.port_change.port) >> 28; slaves_port = mlx4_phys_to_slaves_pport(dev, port); if (eqe->subtype == MLX4_PORT_CHANGE_SUBTYPE_DOWN) { mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_DOWN, port); mlx4_priv(dev)->sense.do_sense_port[port] = 1; if (!mlx4_is_master(dev)) break; for (i = 0; i < dev->persist->num_vfs + 1; i++) { int reported_port = mlx4_is_bonded(dev) ? 1 : mlx4_phys_to_slave_port(dev, i, port); if (!test_bit(i, slaves_port.slaves) && !mlx4_is_bonded(dev)) continue; if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) { if (i == mlx4_master_func_num(dev)) continue; mlx4_dbg(dev, "%s: Sending MLX4_PORT_CHANGE_SUBTYPE_DOWN to slave: %d, port:%d\n", __func__, i, port); s_info = &priv->mfunc.master.vf_oper[i].vport[port].state; if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state) { eqe->event.port_change.port = cpu_to_be32( (be32_to_cpu(eqe->event.port_change.port) & 0xFFFFFFF) | (reported_port << 28)); mlx4_slave_event(dev, i, eqe); } } else { /* IB port */ set_and_calc_slave_port_state(dev, i, port, MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN, &gen_event); /*we can be in pending state, then do not send port_down event*/ if (SLAVE_PORT_GEN_EVENT_DOWN == gen_event) { if (i == mlx4_master_func_num(dev)) continue; eqe->event.port_change.port = cpu_to_be32( (be32_to_cpu(eqe->event.port_change.port) & 0xFFFFFFF) | (mlx4_phys_to_slave_port(dev, i, port) << 28)); mlx4_slave_event(dev, i, eqe); } } } } else { mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_UP, port); mlx4_priv(dev)->sense.do_sense_port[port] = 0; if (!mlx4_is_master(dev)) break; if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) for (i = 0; i < dev->persist->num_vfs + 1; i++) { int reported_port = mlx4_is_bonded(dev) ? 1 : mlx4_phys_to_slave_port(dev, i, port); if (!test_bit(i, slaves_port.slaves) && !mlx4_is_bonded(dev)) continue; if (i == mlx4_master_func_num(dev)) continue; s_info = &priv->mfunc.master.vf_oper[i].vport[port].state; if (IFLA_VF_LINK_STATE_AUTO == s_info->link_state) { eqe->event.port_change.port = cpu_to_be32( (be32_to_cpu(eqe->event.port_change.port) & 0xFFFFFFF) | (reported_port << 28)); mlx4_slave_event(dev, i, eqe); } } else /* IB port */ /* port-up event will be sent to a slave when the * slave's alias-guid is set. This is done in alias_GUID.c */ set_all_slave_state(dev, port, MLX4_DEV_EVENT_PORT_UP); } break; } case MLX4_EVENT_TYPE_CQ_ERROR: mlx4_warn(dev, "CQ %s on CQN %06x\n", eqe->event.cq_err.syndrome == 1 ? "overrun" : "access violation", be32_to_cpu(eqe->event.cq_err.cqn) & 0xffffff); if (mlx4_is_master(dev)) { ret = mlx4_get_slave_from_resource_id(dev, RES_CQ, be32_to_cpu(eqe->event.cq_err.cqn) & 0xffffff, &slave); if (ret && ret != -ENOENT) { mlx4_dbg(dev, "CQ event %02x(%02x) on EQ %d at index %u: could not get slave id (%d)\n", eqe->type, eqe->subtype, eq->eqn, eq->cons_index, ret); break; } if (!ret && slave != dev->caps.function) { mlx4_slave_event(dev, slave, eqe); break; } } mlx4_cq_event(dev, be32_to_cpu(eqe->event.cq_err.cqn) & 0xffffff, eqe->type); break; case MLX4_EVENT_TYPE_EQ_OVERFLOW: mlx4_warn(dev, "EQ overrun on EQN %d\n", eq->eqn); break; case MLX4_EVENT_TYPE_OP_REQUIRED: atomic_inc(&priv->opreq_count); /* FW commands can't be executed from interrupt context * working in deferred task */ queue_work(mlx4_wq, &priv->opreq_task); break; case MLX4_EVENT_TYPE_COMM_CHANNEL: if (!mlx4_is_master(dev)) { mlx4_warn(dev, "Received comm channel event for non master device\n"); break; } memcpy(&priv->mfunc.master.comm_arm_bit_vector, eqe->event.comm_channel_arm.bit_vec, sizeof(eqe->event.comm_channel_arm.bit_vec)); queue_work(priv->mfunc.master.comm_wq, &priv->mfunc.master.comm_work); break; case MLX4_EVENT_TYPE_FLR_EVENT: flr_slave = be32_to_cpu(eqe->event.flr_event.slave_id); if (!mlx4_is_master(dev)) { mlx4_warn(dev, "Non-master function received FLR event\n"); break; } mlx4_dbg(dev, "FLR event for slave: %d\n", flr_slave); if (flr_slave >= dev->num_slaves) { mlx4_warn(dev, "Got FLR for unknown function: %d\n", flr_slave); update_slave_state = 0; } else update_slave_state = 1; spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags); if (update_slave_state) { priv->mfunc.master.slave_state[flr_slave].active = false; priv->mfunc.master.slave_state[flr_slave].last_cmd = MLX4_COMM_CMD_FLR; priv->mfunc.master.slave_state[flr_slave].is_slave_going_down = 1; } spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags); mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_SHUTDOWN, flr_slave); queue_work(priv->mfunc.master.comm_wq, &priv->mfunc.master.slave_flr_event_work); break; case MLX4_EVENT_TYPE_FATAL_WARNING: if (eqe->subtype == MLX4_FATAL_WARNING_SUBTYPE_WARMING) { if (mlx4_is_master(dev)) for (i = 0; i < dev->num_slaves; i++) { mlx4_dbg(dev, "%s: Sending MLX4_FATAL_WARNING_SUBTYPE_WARMING to slave: %d\n", __func__, i); if (i == dev->caps.function) continue; mlx4_slave_event(dev, i, eqe); } mlx4_err(dev, "Temperature Threshold was reached! Threshold: %d celsius degrees; Current Temperature: %d\n", be16_to_cpu(eqe->event.warming.warning_threshold), be16_to_cpu(eqe->event.warming.current_temperature)); } else mlx4_warn(dev, "Unhandled event FATAL WARNING (%02x), subtype %02x on EQ %d at index %u. owner=%x, nent=0x%x, slave=%x, ownership=%s\n", eqe->type, eqe->subtype, eq->eqn, eq->cons_index, eqe->owner, eq->nent, eqe->slave_id, !!(eqe->owner & 0x80) ^ !!(eq->cons_index & eq->nent) ? "HW" : "SW"); break; case MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT: mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_MGMT_CHANGE, (unsigned long) eqe); break; case MLX4_EVENT_TYPE_RECOVERABLE_ERROR_EVENT: switch (eqe->subtype) { case MLX4_RECOVERABLE_ERROR_EVENT_SUBTYPE_BAD_CABLE: mlx4_warn(dev, "Bad cable detected on port %u\n", eqe->event.bad_cable.port); break; case MLX4_RECOVERABLE_ERROR_EVENT_SUBTYPE_UNSUPPORTED_CABLE: mlx4_warn(dev, "Unsupported cable detected\n"); break; default: mlx4_dbg(dev, "Unhandled recoverable error event detected: %02x(%02x) on EQ %d at index %u. owner=%x, nent=0x%x, ownership=%s\n", eqe->type, eqe->subtype, eq->eqn, eq->cons_index, eqe->owner, eq->nent, !!(eqe->owner & 0x80) ^ !!(eq->cons_index & eq->nent) ? "HW" : "SW"); break; } break; case MLX4_EVENT_TYPE_EEC_CATAS_ERROR: case MLX4_EVENT_TYPE_ECC_DETECT: default: mlx4_warn(dev, "Unhandled event %02x(%02x) on EQ %d at index %u. owner=%x, nent=0x%x, slave=%x, ownership=%s\n", eqe->type, eqe->subtype, eq->eqn, eq->cons_index, eqe->owner, eq->nent, eqe->slave_id, !!(eqe->owner & 0x80) ^ !!(eq->cons_index & eq->nent) ? "HW" : "SW"); break; } ++eq->cons_index; eqes_found = 1; ++set_ci; /* * The HCA will think the queue has overflowed if we * don't tell it we've been processing events. We * create our EQs with MLX4_NUM_SPARE_EQE extra * entries, so we must update our consumer index at * least that often. */ if (unlikely(set_ci >= MLX4_NUM_SPARE_EQE)) { eq_set_ci(eq, 0); set_ci = 0; } } eq_set_ci(eq, 1); return eqes_found; } static irqreturn_t mlx4_interrupt(int irq, void *dev_ptr) { struct mlx4_dev *dev = dev_ptr; struct mlx4_priv *priv = mlx4_priv(dev); int work = 0; int i; writel(priv->eq_table.clr_mask, priv->eq_table.clr_int); for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) work |= mlx4_eq_int(dev, &priv->eq_table.eq[i]); return IRQ_RETVAL(work); } static irqreturn_t mlx4_msi_x_interrupt(int irq, void *eq_ptr) { struct mlx4_eq *eq = eq_ptr; struct mlx4_dev *dev = eq->dev; mlx4_eq_int(dev, eq); /* MSI-X vectors always belong to us */ return IRQ_HANDLED; } int mlx4_MAP_EQ_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, struct mlx4_cmd_mailbox *inbox, struct mlx4_cmd_mailbox *outbox, struct mlx4_cmd_info *cmd) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_slave_event_eq_info *event_eq = priv->mfunc.master.slave_state[slave].event_eq; u32 in_modifier = vhcr->in_modifier; u32 eqn = in_modifier & 0x3FF; u64 in_param = vhcr->in_param; int err = 0; int i; if (slave == dev->caps.function) err = mlx4_cmd(dev, in_param, (in_modifier & 0x80000000) | eqn, 0, MLX4_CMD_MAP_EQ, MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); if (!err) for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i) if (in_param & (1LL << i)) event_eq[i].eqn = in_modifier >> 31 ? -1 : eqn; return err; } static int mlx4_MAP_EQ(struct mlx4_dev *dev, u64 event_mask, int unmap, int eq_num) { return mlx4_cmd(dev, event_mask, (unmap << 31) | eq_num, 0, MLX4_CMD_MAP_EQ, MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); } static int mlx4_SW2HW_EQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, int eq_num) { return mlx4_cmd(dev, mailbox->dma, eq_num, 0, MLX4_CMD_SW2HW_EQ, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); } static int mlx4_HW2SW_EQ(struct mlx4_dev *dev, int eq_num) { return mlx4_cmd(dev, 0, eq_num, 1, MLX4_CMD_HW2SW_EQ, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); } static int mlx4_num_eq_uar(struct mlx4_dev *dev) { /* * Each UAR holds 4 EQ doorbells. To figure out how many UARs * we need to map, take the difference of highest index and * the lowest index we'll use and add 1. */ return (dev->caps.num_comp_vectors + 1 + dev->caps.reserved_eqs) / 4 - dev->caps.reserved_eqs / 4 + 1; } static void __iomem *mlx4_get_eq_uar(struct mlx4_dev *dev, struct mlx4_eq *eq) { struct mlx4_priv *priv = mlx4_priv(dev); int index; index = eq->eqn / 4 - dev->caps.reserved_eqs / 4; if (!priv->eq_table.uar_map[index]) { priv->eq_table.uar_map[index] = ioremap( pci_resource_start(dev->persist->pdev, 2) + ((eq->eqn / 4) << (dev->uar_page_shift)), (1 << (dev->uar_page_shift))); if (!priv->eq_table.uar_map[index]) { mlx4_err(dev, "Couldn't map EQ doorbell for EQN 0x%06x\n", eq->eqn); return NULL; } } return priv->eq_table.uar_map[index] + 0x800 + 8 * (eq->eqn % 4); } static void mlx4_unmap_uar(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); int i; for (i = 0; i < mlx4_num_eq_uar(dev); ++i) if (priv->eq_table.uar_map[i]) { iounmap(priv->eq_table.uar_map[i]); priv->eq_table.uar_map[i] = NULL; } } static int mlx4_create_eq(struct mlx4_dev *dev, int nent, u8 intr, struct mlx4_eq *eq) { struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_cmd_mailbox *mailbox; struct mlx4_eq_context *eq_context; int npages; u64 *dma_list = NULL; dma_addr_t t; u64 mtt_addr; int err = -ENOMEM; int i; eq->dev = dev; eq->nent = roundup_pow_of_two(max(nent, 2)); /* CX3 is capable of extending the CQE/EQE from 32 to 64 bytes, with * strides of 64B,128B and 256B. */ npages = PAGE_ALIGN(eq->nent * dev->caps.eqe_size) / PAGE_SIZE; eq->page_list = kmalloc_array(npages, sizeof(*eq->page_list), GFP_KERNEL); if (!eq->page_list) goto err_out; for (i = 0; i < npages; ++i) eq->page_list[i].buf = NULL; dma_list = kmalloc_array(npages, sizeof(*dma_list), GFP_KERNEL); if (!dma_list) goto err_out_free; mailbox = mlx4_alloc_cmd_mailbox(dev); if (IS_ERR(mailbox)) goto err_out_free; eq_context = mailbox->buf; for (i = 0; i < npages; ++i) { eq->page_list[i].buf = dma_alloc_coherent(&dev->persist-> pdev->dev, PAGE_SIZE, &t, GFP_KERNEL); if (!eq->page_list[i].buf) goto err_out_free_pages; dma_list[i] = t; eq->page_list[i].map = t; } eq->eqn = mlx4_bitmap_alloc(&priv->eq_table.bitmap); if (eq->eqn == -1) goto err_out_free_pages; eq->doorbell = mlx4_get_eq_uar(dev, eq); if (!eq->doorbell) { err = -ENOMEM; goto err_out_free_eq; } err = mlx4_mtt_init(dev, npages, PAGE_SHIFT, &eq->mtt); if (err) goto err_out_free_eq; err = mlx4_write_mtt(dev, &eq->mtt, 0, npages, dma_list); if (err) goto err_out_free_mtt; eq_context->flags = cpu_to_be32(MLX4_EQ_STATUS_OK | MLX4_EQ_STATE_ARMED); eq_context->log_eq_size = ilog2(eq->nent); eq_context->intr = intr; eq_context->log_page_size = PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT; mtt_addr = mlx4_mtt_addr(dev, &eq->mtt); eq_context->mtt_base_addr_h = mtt_addr >> 32; eq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); err = mlx4_SW2HW_EQ(dev, mailbox, eq->eqn); if (err) { mlx4_warn(dev, "SW2HW_EQ failed (%d)\n", err); goto err_out_free_mtt; } kfree(dma_list); mlx4_free_cmd_mailbox(dev, mailbox); eq->cons_index = 0; INIT_LIST_HEAD(&eq->tasklet_ctx.list); INIT_LIST_HEAD(&eq->tasklet_ctx.process_list); spin_lock_init(&eq->tasklet_ctx.lock); tasklet_setup(&eq->tasklet_ctx.task, mlx4_cq_tasklet_cb); return err; err_out_free_mtt: mlx4_mtt_cleanup(dev, &eq->mtt); err_out_free_eq: mlx4_bitmap_free(&priv->eq_table.bitmap, eq->eqn, MLX4_USE_RR); err_out_free_pages: for (i = 0; i < npages; ++i) if (eq->page_list[i].buf) dma_free_coherent(&dev->persist->pdev->dev, PAGE_SIZE, eq->page_list[i].buf, eq->page_list[i].map); mlx4_free_cmd_mailbox(dev, mailbox); err_out_free: kfree(eq->page_list); kfree(dma_list); err_out: return err; } static void mlx4_free_eq(struct mlx4_dev *dev, struct mlx4_eq *eq) { struct mlx4_priv *priv = mlx4_priv(dev); int err; int i; /* CX3 is capable of extending the CQE/EQE from 32 to 64 bytes, with * strides of 64B,128B and 256B */ int npages = PAGE_ALIGN(dev->caps.eqe_size * eq->nent) / PAGE_SIZE; err = mlx4_HW2SW_EQ(dev, eq->eqn); if (err) mlx4_warn(dev, "HW2SW_EQ failed (%d)\n", err); synchronize_irq(eq->irq); tasklet_disable(&eq->tasklet_ctx.task); mlx4_mtt_cleanup(dev, &eq->mtt); for (i = 0; i < npages; ++i) dma_free_coherent(&dev->persist->pdev->dev, PAGE_SIZE, eq->page_list[i].buf, eq->page_list[i].map); kfree(eq->page_list); mlx4_bitmap_free(&priv->eq_table.bitmap, eq->eqn, MLX4_USE_RR); } static void mlx4_free_irqs(struct mlx4_dev *dev) { struct mlx4_eq_table *eq_table = &mlx4_priv(dev)->eq_table; int i; if (eq_table->have_irq) free_irq(dev->persist->pdev->irq, dev); for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) if (eq_table->eq[i].have_irq) { free_cpumask_var(eq_table->eq[i].affinity_mask); irq_update_affinity_hint(eq_table->eq[i].irq, NULL); free_irq(eq_table->eq[i].irq, eq_table->eq + i); eq_table->eq[i].have_irq = 0; } kfree(eq_table->irq_names); } static int mlx4_map_clr_int(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); priv->clr_base = ioremap(pci_resource_start(dev->persist->pdev, priv->fw.clr_int_bar) + priv->fw.clr_int_base, MLX4_CLR_INT_SIZE); if (!priv->clr_base) { mlx4_err(dev, "Couldn't map interrupt clear register, aborting\n"); return -ENOMEM; } return 0; } static void mlx4_unmap_clr_int(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); iounmap(priv->clr_base); } int mlx4_alloc_eq_table(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); priv->eq_table.eq = kcalloc(dev->caps.num_eqs - dev->caps.reserved_eqs, sizeof(*priv->eq_table.eq), GFP_KERNEL); if (!priv->eq_table.eq) return -ENOMEM; return 0; } void mlx4_free_eq_table(struct mlx4_dev *dev) { kfree(mlx4_priv(dev)->eq_table.eq); } int mlx4_init_eq_table(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); int err; int i; priv->eq_table.uar_map = kcalloc(mlx4_num_eq_uar(dev), sizeof(*priv->eq_table.uar_map), GFP_KERNEL); if (!priv->eq_table.uar_map) { err = -ENOMEM; goto err_out_free; } err = mlx4_bitmap_init(&priv->eq_table.bitmap, roundup_pow_of_two(dev->caps.num_eqs), dev->caps.num_eqs - 1, dev->caps.reserved_eqs, roundup_pow_of_two(dev->caps.num_eqs) - dev->caps.num_eqs); if (err) goto err_out_free; for (i = 0; i < mlx4_num_eq_uar(dev); ++i) priv->eq_table.uar_map[i] = NULL; if (!mlx4_is_slave(dev)) { err = mlx4_map_clr_int(dev); if (err) goto err_out_bitmap; priv->eq_table.clr_mask = swab32(1 << (priv->eq_table.inta_pin & 31)); priv->eq_table.clr_int = priv->clr_base + (priv->eq_table.inta_pin < 32 ? 4 : 0); } priv->eq_table.irq_names = kmalloc_array(MLX4_IRQNAME_SIZE, (dev->caps.num_comp_vectors + 1), GFP_KERNEL); if (!priv->eq_table.irq_names) { err = -ENOMEM; goto err_out_clr_int; } for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) { if (i == MLX4_EQ_ASYNC) { err = mlx4_create_eq(dev, MLX4_NUM_ASYNC_EQE + MLX4_NUM_SPARE_EQE, 0, &priv->eq_table.eq[MLX4_EQ_ASYNC]); } else { struct mlx4_eq *eq = &priv->eq_table.eq[i]; #ifdef CONFIG_RFS_ACCEL int port = find_first_bit(eq->actv_ports.ports, dev->caps.num_ports) + 1; if (port <= dev->caps.num_ports) { struct mlx4_port_info *info = &mlx4_priv(dev)->port[port]; if (!info->rmap) { info->rmap = alloc_irq_cpu_rmap( mlx4_get_eqs_per_port(dev, port)); if (!info->rmap) { mlx4_warn(dev, "Failed to allocate cpu rmap\n"); err = -ENOMEM; goto err_out_unmap; } } err = irq_cpu_rmap_add( info->rmap, eq->irq); if (err) mlx4_warn(dev, "Failed adding irq rmap\n"); } #endif err = mlx4_create_eq(dev, dev->quotas.cq + MLX4_NUM_SPARE_EQE, (dev->flags & MLX4_FLAG_MSI_X) ? i + 1 - !!(i > MLX4_EQ_ASYNC) : 0, eq); } if (err) goto err_out_unmap; } if (dev->flags & MLX4_FLAG_MSI_X) { const char *eq_name; snprintf(priv->eq_table.irq_names + MLX4_EQ_ASYNC * MLX4_IRQNAME_SIZE, MLX4_IRQNAME_SIZE, "mlx4-async@pci:%s", pci_name(dev->persist->pdev)); eq_name = priv->eq_table.irq_names + MLX4_EQ_ASYNC * MLX4_IRQNAME_SIZE; err = request_irq(priv->eq_table.eq[MLX4_EQ_ASYNC].irq, mlx4_msi_x_interrupt, 0, eq_name, priv->eq_table.eq + MLX4_EQ_ASYNC); if (err) goto err_out_unmap; priv->eq_table.eq[MLX4_EQ_ASYNC].have_irq = 1; } else { snprintf(priv->eq_table.irq_names, MLX4_IRQNAME_SIZE, DRV_NAME "@pci:%s", pci_name(dev->persist->pdev)); err = request_irq(dev->persist->pdev->irq, mlx4_interrupt, IRQF_SHARED, priv->eq_table.irq_names, dev); if (err) goto err_out_unmap; priv->eq_table.have_irq = 1; } err = mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 0, priv->eq_table.eq[MLX4_EQ_ASYNC].eqn); if (err) mlx4_warn(dev, "MAP_EQ for async EQ %d failed (%d)\n", priv->eq_table.eq[MLX4_EQ_ASYNC].eqn, err); /* arm ASYNC eq */ eq_set_ci(&priv->eq_table.eq[MLX4_EQ_ASYNC], 1); return 0; err_out_unmap: while (i > 0) mlx4_free_eq(dev, &priv->eq_table.eq[--i]); #ifdef CONFIG_RFS_ACCEL for (i = 1; i <= dev->caps.num_ports; i++) { if (mlx4_priv(dev)->port[i].rmap) { free_irq_cpu_rmap(mlx4_priv(dev)->port[i].rmap); mlx4_priv(dev)->port[i].rmap = NULL; } } #endif mlx4_free_irqs(dev); err_out_clr_int: if (!mlx4_is_slave(dev)) mlx4_unmap_clr_int(dev); err_out_bitmap: mlx4_unmap_uar(dev); mlx4_bitmap_cleanup(&priv->eq_table.bitmap); err_out_free: kfree(priv->eq_table.uar_map); return err; } void mlx4_cleanup_eq_table(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); int i; mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 1, priv->eq_table.eq[MLX4_EQ_ASYNC].eqn); #ifdef CONFIG_RFS_ACCEL for (i = 1; i <= dev->caps.num_ports; i++) { if (mlx4_priv(dev)->port[i].rmap) { free_irq_cpu_rmap(mlx4_priv(dev)->port[i].rmap); mlx4_priv(dev)->port[i].rmap = NULL; } } #endif mlx4_free_irqs(dev); for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) mlx4_free_eq(dev, &priv->eq_table.eq[i]); if (!mlx4_is_slave(dev)) mlx4_unmap_clr_int(dev); mlx4_unmap_uar(dev); mlx4_bitmap_cleanup(&priv->eq_table.bitmap); kfree(priv->eq_table.uar_map); } /* A test that verifies that we can accept interrupts * on the vector allocated for asynchronous events */ int mlx4_test_async(struct mlx4_dev *dev) { return mlx4_NOP(dev); } EXPORT_SYMBOL(mlx4_test_async); /* A test that verifies that we can accept interrupts * on the given irq vector of the tested port. * Interrupts are checked using the NOP command. */ int mlx4_test_interrupt(struct mlx4_dev *dev, int vector) { struct mlx4_priv *priv = mlx4_priv(dev); int err; /* Temporary use polling for command completions */ mlx4_cmd_use_polling(dev); /* Map the new eq to handle all asynchronous events */ err = mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 0, priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(vector)].eqn); if (err) { mlx4_warn(dev, "Failed mapping eq for interrupt test\n"); goto out; } /* Go back to using events */ mlx4_cmd_use_events(dev); err = mlx4_NOP(dev); /* Return to default */ mlx4_cmd_use_polling(dev); out: mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 0, priv->eq_table.eq[MLX4_EQ_ASYNC].eqn); mlx4_cmd_use_events(dev); return err; } EXPORT_SYMBOL(mlx4_test_interrupt); bool mlx4_is_eq_vector_valid(struct mlx4_dev *dev, u8 port, int vector) { struct mlx4_priv *priv = mlx4_priv(dev); vector = MLX4_CQ_TO_EQ_VECTOR(vector); if (vector < 0 || (vector >= dev->caps.num_comp_vectors + 1) || (vector == MLX4_EQ_ASYNC)) return false; return test_bit(port - 1, priv->eq_table.eq[vector].actv_ports.ports); } EXPORT_SYMBOL(mlx4_is_eq_vector_valid); u32 mlx4_get_eqs_per_port(struct mlx4_dev *dev, u8 port) { struct mlx4_priv *priv = mlx4_priv(dev); unsigned int i; unsigned int sum = 0; for (i = 0; i < dev->caps.num_comp_vectors + 1; i++) sum += !!test_bit(port - 1, priv->eq_table.eq[i].actv_ports.ports); return sum; } EXPORT_SYMBOL(mlx4_get_eqs_per_port); int mlx4_is_eq_shared(struct mlx4_dev *dev, int vector) { struct mlx4_priv *priv = mlx4_priv(dev); vector = MLX4_CQ_TO_EQ_VECTOR(vector); if (vector <= 0 || (vector >= dev->caps.num_comp_vectors + 1)) return -EINVAL; return !!(bitmap_weight(priv->eq_table.eq[vector].actv_ports.ports, dev->caps.num_ports) > 1); } EXPORT_SYMBOL(mlx4_is_eq_shared); struct cpu_rmap *mlx4_get_cpu_rmap(struct mlx4_dev *dev, int port) { return mlx4_priv(dev)->port[port].rmap; } EXPORT_SYMBOL(mlx4_get_cpu_rmap); int mlx4_assign_eq(struct mlx4_dev *dev, u8 port, int *vector) { struct mlx4_priv *priv = mlx4_priv(dev); int err = 0, i = 0; u32 min_ref_count_val = (u32)-1; int requested_vector = MLX4_CQ_TO_EQ_VECTOR(*vector); int *prequested_vector = NULL; mutex_lock(&priv->msix_ctl.pool_lock); if (requested_vector < (dev->caps.num_comp_vectors + 1) && (requested_vector >= 0) && (requested_vector != MLX4_EQ_ASYNC)) { if (test_bit(port - 1, priv->eq_table.eq[requested_vector].actv_ports.ports)) { prequested_vector = &requested_vector; } else { struct mlx4_eq *eq; for (i = 1; i < port; requested_vector += mlx4_get_eqs_per_port(dev, i++)) ; eq = &priv->eq_table.eq[requested_vector]; if (requested_vector < dev->caps.num_comp_vectors + 1 && test_bit(port - 1, eq->actv_ports.ports)) { prequested_vector = &requested_vector; } } } if (!prequested_vector) { requested_vector = -1; for (i = 0; min_ref_count_val && i < dev->caps.num_comp_vectors + 1; i++) { struct mlx4_eq *eq = &priv->eq_table.eq[i]; if (min_ref_count_val > eq->ref_count && test_bit(port - 1, eq->actv_ports.ports)) { min_ref_count_val = eq->ref_count; requested_vector = i; } } if (requested_vector < 0) { err = -ENOSPC; goto err_unlock; } prequested_vector = &requested_vector; } if (!test_bit(*prequested_vector, priv->msix_ctl.pool_bm) && dev->flags & MLX4_FLAG_MSI_X) { set_bit(*prequested_vector, priv->msix_ctl.pool_bm); snprintf(priv->eq_table.irq_names + *prequested_vector * MLX4_IRQNAME_SIZE, MLX4_IRQNAME_SIZE, "mlx4-%d@%s", *prequested_vector, dev_name(&dev->persist->pdev->dev)); err = request_irq(priv->eq_table.eq[*prequested_vector].irq, mlx4_msi_x_interrupt, 0, &priv->eq_table.irq_names[*prequested_vector << 5], priv->eq_table.eq + *prequested_vector); if (err) { clear_bit(*prequested_vector, priv->msix_ctl.pool_bm); *prequested_vector = -1; } else { #if defined(CONFIG_SMP) mlx4_set_eq_affinity_hint(priv, *prequested_vector); #endif eq_set_ci(&priv->eq_table.eq[*prequested_vector], 1); priv->eq_table.eq[*prequested_vector].have_irq = 1; } } if (!err && *prequested_vector >= 0) priv->eq_table.eq[*prequested_vector].ref_count++; err_unlock: mutex_unlock(&priv->msix_ctl.pool_lock); if (!err && *prequested_vector >= 0) *vector = MLX4_EQ_TO_CQ_VECTOR(*prequested_vector); else *vector = 0; return err; } EXPORT_SYMBOL(mlx4_assign_eq); int mlx4_eq_get_irq(struct mlx4_dev *dev, int cq_vec) { struct mlx4_priv *priv = mlx4_priv(dev); return priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(cq_vec)].irq; } EXPORT_SYMBOL(mlx4_eq_get_irq); void mlx4_release_eq(struct mlx4_dev *dev, int vec) { struct mlx4_priv *priv = mlx4_priv(dev); int eq_vec = MLX4_CQ_TO_EQ_VECTOR(vec); mutex_lock(&priv->msix_ctl.pool_lock); priv->eq_table.eq[eq_vec].ref_count--; /* once we allocated EQ, we don't release it because it might be binded * to cpu_rmap. */ mutex_unlock(&priv->msix_ctl.pool_lock); } EXPORT_SYMBOL(mlx4_release_eq);
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