diff options
Diffstat (limited to 'sys/ofed/drivers/net/mlx4/cq.c')
| -rw-r--r-- | sys/ofed/drivers/net/mlx4/cq.c | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/sys/ofed/drivers/net/mlx4/cq.c b/sys/ofed/drivers/net/mlx4/cq.c deleted file mode 100644 index b133ae615ea4..000000000000 --- a/sys/ofed/drivers/net/mlx4/cq.c +++ /dev/null @@ -1,400 +0,0 @@ -/* - * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. - * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. - * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved. - * Copyright (c) 2005, 2006, 2007, 2008, 2014 Mellanox Technologies. All rights reserved. - * Copyright (c) 2004 Voltaire, 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/hardirq.h> -#include <linux/module.h> -#include <linux/mlx4/cmd.h> -#include <linux/mlx4/cq.h> - -#include "mlx4.h" -#include "icm.h" - -#define MLX4_CQ_STATUS_OK ( 0 << 28) -#define MLX4_CQ_STATUS_OVERFLOW ( 9 << 28) -#define MLX4_CQ_STATUS_WRITE_FAIL (10 << 28) -#define MLX4_CQ_FLAG_CC ( 1 << 18) -#define MLX4_CQ_FLAG_OI ( 1 << 17) -#define MLX4_CQ_STATE_ARMED ( 9 << 8) -#define MLX4_CQ_STATE_ARMED_SOL ( 6 << 8) -#define MLX4_EQ_STATE_FIRED (10 << 8) - -void mlx4_cq_completion(struct mlx4_dev *dev, u32 cqn) -{ - struct mlx4_cq_table *cq_table = &mlx4_priv(dev)->cq_table; - struct mlx4_cq *cq; - - read_lock(&cq_table->cq_table_lock); - - cq = radix_tree_lookup(&mlx4_priv(dev)->cq_table.tree, - cqn & (dev->caps.num_cqs - 1)); - if (cq) - atomic_inc(&cq->refcount); - - read_unlock(&cq_table->cq_table_lock); - - if (!cq) { - mlx4_dbg(dev, "Completion event for bogus CQ %08x\n", cqn); - return; - } - - ++cq->arm_sn; - - cq->comp(cq); - - if (atomic_dec_and_test(&cq->refcount)) - complete(&cq->free); -} - -void mlx4_cq_event(struct mlx4_dev *dev, u32 cqn, int event_type) -{ - struct mlx4_cq_table *cq_table = &mlx4_priv(dev)->cq_table; - struct mlx4_cq *cq; - - read_lock(&cq_table->cq_table_lock); - - cq = radix_tree_lookup(&cq_table->tree, cqn & (dev->caps.num_cqs - 1)); - if (cq) - atomic_inc(&cq->refcount); - - read_unlock(&cq_table->cq_table_lock); - - if (!cq) { - mlx4_warn(dev, "Async event for bogus CQ %08x\n", cqn); - return; - } - - cq->event(cq, event_type); - - if (atomic_dec_and_test(&cq->refcount)) - complete(&cq->free); -} - -static int mlx4_SW2HW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, - int cq_num) -{ - return mlx4_cmd(dev, mailbox->dma, cq_num, 0, - MLX4_CMD_SW2HW_CQ, MLX4_CMD_TIME_CLASS_A, - MLX4_CMD_WRAPPED); -} - -static int mlx4_MODIFY_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, - int cq_num, u32 opmod) -{ - return mlx4_cmd(dev, mailbox->dma, cq_num, opmod, MLX4_CMD_MODIFY_CQ, - MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); -} - -static int mlx4_HW2SW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, - int cq_num) -{ - return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, - cq_num, mailbox ? 0 : 1, MLX4_CMD_HW2SW_CQ, - MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); -} - -int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq, - u16 count, u16 period) -{ - struct mlx4_cmd_mailbox *mailbox; - struct mlx4_cq_context *cq_context; - int err; - - mailbox = mlx4_alloc_cmd_mailbox(dev); - if (IS_ERR(mailbox)) - return PTR_ERR(mailbox); - - cq_context = mailbox->buf; - memset(cq_context, 0, sizeof *cq_context); - - cq_context->cq_max_count = cpu_to_be16(count); - cq_context->cq_period = cpu_to_be16(period); - - err = mlx4_MODIFY_CQ(dev, mailbox, cq->cqn, 1); - - mlx4_free_cmd_mailbox(dev, mailbox); - return err; -} -EXPORT_SYMBOL_GPL(mlx4_cq_modify); - -int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq, - int entries, struct mlx4_mtt *mtt) -{ - struct mlx4_cmd_mailbox *mailbox; - struct mlx4_cq_context *cq_context; - u64 mtt_addr; - int err; - - mailbox = mlx4_alloc_cmd_mailbox(dev); - if (IS_ERR(mailbox)) - return PTR_ERR(mailbox); - - cq_context = mailbox->buf; - memset(cq_context, 0, sizeof *cq_context); - - cq_context->logsize_usrpage = cpu_to_be32(ilog2(entries) << 24); - cq_context->log_page_size = mtt->page_shift - 12; - mtt_addr = mlx4_mtt_addr(dev, mtt); - cq_context->mtt_base_addr_h = mtt_addr >> 32; - cq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); - - err = mlx4_MODIFY_CQ(dev, mailbox, cq->cqn, 0); - - mlx4_free_cmd_mailbox(dev, mailbox); - return err; -} -EXPORT_SYMBOL_GPL(mlx4_cq_resize); - -int mlx4_cq_ignore_overrun(struct mlx4_dev *dev, struct mlx4_cq *cq) -{ - struct mlx4_cmd_mailbox *mailbox; - struct mlx4_cq_context *cq_context; - int err; - - mailbox = mlx4_alloc_cmd_mailbox(dev); - if (IS_ERR(mailbox)) - return PTR_ERR(mailbox); - - cq_context = mailbox->buf; - memset(cq_context, 0, sizeof *cq_context); - - cq_context->flags |= cpu_to_be32(MLX4_CQ_FLAG_OI); - - err = mlx4_MODIFY_CQ(dev, mailbox, cq->cqn, 3); - - mlx4_free_cmd_mailbox(dev, mailbox); - return err; -} -EXPORT_SYMBOL_GPL(mlx4_cq_ignore_overrun); - -int __mlx4_cq_alloc_icm(struct mlx4_dev *dev, int *cqn) -{ - struct mlx4_priv *priv = mlx4_priv(dev); - struct mlx4_cq_table *cq_table = &priv->cq_table; - int err; - - *cqn = mlx4_bitmap_alloc(&cq_table->bitmap); - if (*cqn == -1) - return -ENOMEM; - - err = mlx4_table_get(dev, &cq_table->table, *cqn); - if (err) - goto err_out; - - err = mlx4_table_get(dev, &cq_table->cmpt_table, *cqn); - if (err) - goto err_put; - return 0; - -err_put: - mlx4_table_put(dev, &cq_table->table, *cqn); - -err_out: - mlx4_bitmap_free(&cq_table->bitmap, *cqn, MLX4_NO_RR); - return err; -} - -static int mlx4_cq_alloc_icm(struct mlx4_dev *dev, int *cqn) -{ - u64 out_param; - int err; - - if (mlx4_is_mfunc(dev)) { - err = mlx4_cmd_imm(dev, 0, &out_param, RES_CQ, - RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES, - MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); - if (err) - return err; - else { - *cqn = get_param_l(&out_param); - return 0; - } - } - return __mlx4_cq_alloc_icm(dev, cqn); -} - -void __mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn) -{ - struct mlx4_priv *priv = mlx4_priv(dev); - struct mlx4_cq_table *cq_table = &priv->cq_table; - - mlx4_table_put(dev, &cq_table->cmpt_table, cqn); - mlx4_table_put(dev, &cq_table->table, cqn); - mlx4_bitmap_free(&cq_table->bitmap, cqn, MLX4_NO_RR); -} - -static void mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn) -{ - u64 in_param = 0; - int err; - - if (mlx4_is_mfunc(dev)) { - set_param_l(&in_param, cqn); - err = mlx4_cmd(dev, in_param, RES_CQ, RES_OP_RESERVE_AND_MAP, - MLX4_CMD_FREE_RES, - MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); - if (err) - mlx4_warn(dev, "Failed freeing cq:%d\n", cqn); - } else - __mlx4_cq_free_icm(dev, cqn); -} - -int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, - struct mlx4_mtt *mtt, struct mlx4_uar *uar, u64 db_rec, - struct mlx4_cq *cq, unsigned vector, int collapsed, - int timestamp_en) -{ - struct mlx4_priv *priv = mlx4_priv(dev); - struct mlx4_cq_table *cq_table = &priv->cq_table; - struct mlx4_cmd_mailbox *mailbox; - struct mlx4_cq_context *cq_context; - u64 mtt_addr; - int err; - - if (vector > dev->caps.num_comp_vectors + dev->caps.comp_pool) - return -EINVAL; - - cq->vector = vector; - - err = mlx4_cq_alloc_icm(dev, &cq->cqn); - if (err) - return err; - - spin_lock_irq(&cq_table->lock); - err = radix_tree_insert(&cq_table->tree, cq->cqn, cq); - spin_unlock_irq(&cq_table->lock); - if (err) - goto err_icm; - - mailbox = mlx4_alloc_cmd_mailbox(dev); - if (IS_ERR(mailbox)) { - err = PTR_ERR(mailbox); - goto err_radix; - } - - cq_context = mailbox->buf; - memset(cq_context, 0, sizeof *cq_context); - - cq_context->flags = cpu_to_be32(!!collapsed << 18); - if (timestamp_en) - cq_context->flags |= cpu_to_be32(1 << 19); - - cq_context->logsize_usrpage = cpu_to_be32((ilog2(nent) << 24) | uar->index); - cq_context->comp_eqn = priv->eq_table.eq[vector].eqn; - cq_context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT; - - mtt_addr = mlx4_mtt_addr(dev, mtt); - cq_context->mtt_base_addr_h = mtt_addr >> 32; - cq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); - cq_context->db_rec_addr = cpu_to_be64(db_rec); - - err = mlx4_SW2HW_CQ(dev, mailbox, cq->cqn); - mlx4_free_cmd_mailbox(dev, mailbox); - if (err) - goto err_radix; - - cq->cons_index = 0; - cq->arm_sn = 1; - cq->uar = uar; - atomic_set(&cq->refcount, 1); - init_completion(&cq->free); - - cq->eqn = priv->eq_table.eq[cq->vector].eqn; - cq->irq = priv->eq_table.eq[cq->vector].irq; - - return 0; - -err_radix: - spin_lock_irq(&cq_table->lock); - radix_tree_delete(&cq_table->tree, cq->cqn); - spin_unlock_irq(&cq_table->lock); - -err_icm: - mlx4_cq_free_icm(dev, cq->cqn); - - return err; -} -EXPORT_SYMBOL_GPL(mlx4_cq_alloc); - -void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq) -{ - struct mlx4_priv *priv = mlx4_priv(dev); - struct mlx4_cq_table *cq_table = &priv->cq_table; - int err; - - err = mlx4_HW2SW_CQ(dev, NULL, cq->cqn); - if (err) - mlx4_warn(dev, "HW2SW_CQ failed (%d) for CQN %06x\n", err, cq->cqn); - - synchronize_irq(priv->eq_table.eq[cq->vector].irq); - - spin_lock_irq(&cq_table->lock); - radix_tree_delete(&cq_table->tree, cq->cqn); - spin_unlock_irq(&cq_table->lock); - - if (atomic_dec_and_test(&cq->refcount)) - complete(&cq->free); - wait_for_completion(&cq->free); - - mlx4_cq_free_icm(dev, cq->cqn); -} -EXPORT_SYMBOL_GPL(mlx4_cq_free); - -int mlx4_init_cq_table(struct mlx4_dev *dev) -{ - struct mlx4_cq_table *cq_table = &mlx4_priv(dev)->cq_table; - int err; - - spin_lock_init(&cq_table->lock); - rwlock_init(&cq_table->cq_table_lock); - INIT_RADIX_TREE(&cq_table->tree, GFP_ATOMIC); - if (mlx4_is_slave(dev)) - return 0; - - err = mlx4_bitmap_init(&cq_table->bitmap, dev->caps.num_cqs, - dev->caps.num_cqs - 1, dev->caps.reserved_cqs, 0); - if (err) - return err; - - return 0; -} - -void mlx4_cleanup_cq_table(struct mlx4_dev *dev) -{ - if (mlx4_is_slave(dev)) - return; - /* Nothing to do to clean up radix_tree */ - mlx4_bitmap_cleanup(&mlx4_priv(dev)->cq_table.bitmap); -} |