diff options
Diffstat (limited to 'drivers/net/mlx4/qp.c')
| -rw-r--r-- | drivers/net/mlx4/qp.c | 380 |
1 files changed, 0 insertions, 380 deletions
diff --git a/drivers/net/mlx4/qp.c b/drivers/net/mlx4/qp.c deleted file mode 100644 index ec9350e5f21..00000000000 --- a/drivers/net/mlx4/qp.c +++ /dev/null @@ -1,380 +0,0 @@ -/* - * Copyright (c) 2004 Topspin Communications. All rights reserved. - * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved. - * Copyright (c) 2005, 2006, 2007, 2008 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/gfp.h> -#include <linux/mlx4/cmd.h> -#include <linux/mlx4/qp.h> - -#include "mlx4.h" -#include "icm.h" - -void mlx4_qp_event(struct mlx4_dev *dev, u32 qpn, int event_type) -{ - struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; - struct mlx4_qp *qp; - - spin_lock(&qp_table->lock); - - qp = __mlx4_qp_lookup(dev, qpn); - if (qp) - atomic_inc(&qp->refcount); - - spin_unlock(&qp_table->lock); - - if (!qp) { - mlx4_warn(dev, "Async event for bogus QP %08x\n", qpn); - return; - } - - qp->event(qp, event_type); - - if (atomic_dec_and_test(&qp->refcount)) - complete(&qp->free); -} - -int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt, - enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state, - struct mlx4_qp_context *context, enum mlx4_qp_optpar optpar, - int sqd_event, struct mlx4_qp *qp) -{ - static const u16 op[MLX4_QP_NUM_STATE][MLX4_QP_NUM_STATE] = { - [MLX4_QP_STATE_RST] = { - [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, - [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, - [MLX4_QP_STATE_INIT] = MLX4_CMD_RST2INIT_QP, - }, - [MLX4_QP_STATE_INIT] = { - [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, - [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, - [MLX4_QP_STATE_INIT] = MLX4_CMD_INIT2INIT_QP, - [MLX4_QP_STATE_RTR] = MLX4_CMD_INIT2RTR_QP, - }, - [MLX4_QP_STATE_RTR] = { - [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, - [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, - [MLX4_QP_STATE_RTS] = MLX4_CMD_RTR2RTS_QP, - }, - [MLX4_QP_STATE_RTS] = { - [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, - [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, - [MLX4_QP_STATE_RTS] = MLX4_CMD_RTS2RTS_QP, - [MLX4_QP_STATE_SQD] = MLX4_CMD_RTS2SQD_QP, - }, - [MLX4_QP_STATE_SQD] = { - [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, - [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, - [MLX4_QP_STATE_RTS] = MLX4_CMD_SQD2RTS_QP, - [MLX4_QP_STATE_SQD] = MLX4_CMD_SQD2SQD_QP, - }, - [MLX4_QP_STATE_SQER] = { - [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, - [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, - [MLX4_QP_STATE_RTS] = MLX4_CMD_SQERR2RTS_QP, - }, - [MLX4_QP_STATE_ERR] = { - [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, - [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, - } - }; - - struct mlx4_cmd_mailbox *mailbox; - int ret = 0; - - if (cur_state >= MLX4_QP_NUM_STATE || new_state >= MLX4_QP_NUM_STATE || - !op[cur_state][new_state]) - return -EINVAL; - - if (op[cur_state][new_state] == MLX4_CMD_2RST_QP) - return mlx4_cmd(dev, 0, qp->qpn, 2, - MLX4_CMD_2RST_QP, MLX4_CMD_TIME_CLASS_A); - - mailbox = mlx4_alloc_cmd_mailbox(dev); - if (IS_ERR(mailbox)) - return PTR_ERR(mailbox); - - if (cur_state == MLX4_QP_STATE_RST && new_state == MLX4_QP_STATE_INIT) { - u64 mtt_addr = mlx4_mtt_addr(dev, mtt); - context->mtt_base_addr_h = mtt_addr >> 32; - context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); - context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT; - } - - *(__be32 *) mailbox->buf = cpu_to_be32(optpar); - memcpy(mailbox->buf + 8, context, sizeof *context); - - ((struct mlx4_qp_context *) (mailbox->buf + 8))->local_qpn = - cpu_to_be32(qp->qpn); - - ret = mlx4_cmd(dev, mailbox->dma, qp->qpn | (!!sqd_event << 31), - new_state == MLX4_QP_STATE_RST ? 2 : 0, - op[cur_state][new_state], MLX4_CMD_TIME_CLASS_C); - - mlx4_free_cmd_mailbox(dev, mailbox); - return ret; -} -EXPORT_SYMBOL_GPL(mlx4_qp_modify); - -int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int *base) -{ - struct mlx4_priv *priv = mlx4_priv(dev); - struct mlx4_qp_table *qp_table = &priv->qp_table; - int qpn; - - qpn = mlx4_bitmap_alloc_range(&qp_table->bitmap, cnt, align); - if (qpn == -1) - return -ENOMEM; - - *base = qpn; - return 0; -} -EXPORT_SYMBOL_GPL(mlx4_qp_reserve_range); - -void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt) -{ - struct mlx4_priv *priv = mlx4_priv(dev); - struct mlx4_qp_table *qp_table = &priv->qp_table; - if (base_qpn < dev->caps.sqp_start + 8) - return; - - mlx4_bitmap_free_range(&qp_table->bitmap, base_qpn, cnt); -} -EXPORT_SYMBOL_GPL(mlx4_qp_release_range); - -int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp) -{ - struct mlx4_priv *priv = mlx4_priv(dev); - struct mlx4_qp_table *qp_table = &priv->qp_table; - int err; - - if (!qpn) - return -EINVAL; - - qp->qpn = qpn; - - err = mlx4_table_get(dev, &qp_table->qp_table, qp->qpn); - if (err) - goto err_out; - - err = mlx4_table_get(dev, &qp_table->auxc_table, qp->qpn); - if (err) - goto err_put_qp; - - err = mlx4_table_get(dev, &qp_table->altc_table, qp->qpn); - if (err) - goto err_put_auxc; - - err = mlx4_table_get(dev, &qp_table->rdmarc_table, qp->qpn); - if (err) - goto err_put_altc; - - err = mlx4_table_get(dev, &qp_table->cmpt_table, qp->qpn); - if (err) - goto err_put_rdmarc; - - spin_lock_irq(&qp_table->lock); - err = radix_tree_insert(&dev->qp_table_tree, qp->qpn & (dev->caps.num_qps - 1), qp); - spin_unlock_irq(&qp_table->lock); - if (err) - goto err_put_cmpt; - - atomic_set(&qp->refcount, 1); - init_completion(&qp->free); - - return 0; - -err_put_cmpt: - mlx4_table_put(dev, &qp_table->cmpt_table, qp->qpn); - -err_put_rdmarc: - mlx4_table_put(dev, &qp_table->rdmarc_table, qp->qpn); - -err_put_altc: - mlx4_table_put(dev, &qp_table->altc_table, qp->qpn); - -err_put_auxc: - mlx4_table_put(dev, &qp_table->auxc_table, qp->qpn); - -err_put_qp: - mlx4_table_put(dev, &qp_table->qp_table, qp->qpn); - -err_out: - return err; -} -EXPORT_SYMBOL_GPL(mlx4_qp_alloc); - -void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp) -{ - struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; - unsigned long flags; - - spin_lock_irqsave(&qp_table->lock, flags); - radix_tree_delete(&dev->qp_table_tree, qp->qpn & (dev->caps.num_qps - 1)); - spin_unlock_irqrestore(&qp_table->lock, flags); -} -EXPORT_SYMBOL_GPL(mlx4_qp_remove); - -void mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp) -{ - struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; - - if (atomic_dec_and_test(&qp->refcount)) - complete(&qp->free); - wait_for_completion(&qp->free); - - mlx4_table_put(dev, &qp_table->cmpt_table, qp->qpn); - mlx4_table_put(dev, &qp_table->rdmarc_table, qp->qpn); - mlx4_table_put(dev, &qp_table->altc_table, qp->qpn); - mlx4_table_put(dev, &qp_table->auxc_table, qp->qpn); - mlx4_table_put(dev, &qp_table->qp_table, qp->qpn); -} -EXPORT_SYMBOL_GPL(mlx4_qp_free); - -static int mlx4_CONF_SPECIAL_QP(struct mlx4_dev *dev, u32 base_qpn) -{ - return mlx4_cmd(dev, 0, base_qpn, 0, MLX4_CMD_CONF_SPECIAL_QP, - MLX4_CMD_TIME_CLASS_B); -} - -int mlx4_init_qp_table(struct mlx4_dev *dev) -{ - struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; - int err; - int reserved_from_top = 0; - - spin_lock_init(&qp_table->lock); - INIT_RADIX_TREE(&dev->qp_table_tree, GFP_ATOMIC); - - /* - * We reserve 2 extra QPs per port for the special QPs. The - * block of special QPs must be aligned to a multiple of 8, so - * round up. - */ - dev->caps.sqp_start = - ALIGN(dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 8); - - { - int sort[MLX4_NUM_QP_REGION]; - int i, j, tmp; - int last_base = dev->caps.num_qps; - - for (i = 1; i < MLX4_NUM_QP_REGION; ++i) - sort[i] = i; - - for (i = MLX4_NUM_QP_REGION; i > 0; --i) { - for (j = 2; j < i; ++j) { - if (dev->caps.reserved_qps_cnt[sort[j]] > - dev->caps.reserved_qps_cnt[sort[j - 1]]) { - tmp = sort[j]; - sort[j] = sort[j - 1]; - sort[j - 1] = tmp; - } - } - } - - for (i = 1; i < MLX4_NUM_QP_REGION; ++i) { - last_base -= dev->caps.reserved_qps_cnt[sort[i]]; - dev->caps.reserved_qps_base[sort[i]] = last_base; - reserved_from_top += - dev->caps.reserved_qps_cnt[sort[i]]; - } - - } - - err = mlx4_bitmap_init(&qp_table->bitmap, dev->caps.num_qps, - (1 << 23) - 1, dev->caps.sqp_start + 8, - reserved_from_top); - if (err) - return err; - - return mlx4_CONF_SPECIAL_QP(dev, dev->caps.sqp_start); -} - -void mlx4_cleanup_qp_table(struct mlx4_dev *dev) -{ - mlx4_CONF_SPECIAL_QP(dev, 0); - mlx4_bitmap_cleanup(&mlx4_priv(dev)->qp_table.bitmap); -} - -int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp, - struct mlx4_qp_context *context) -{ - struct mlx4_cmd_mailbox *mailbox; - int err; - - mailbox = mlx4_alloc_cmd_mailbox(dev); - if (IS_ERR(mailbox)) - return PTR_ERR(mailbox); - - err = mlx4_cmd_box(dev, 0, mailbox->dma, qp->qpn, 0, - MLX4_CMD_QUERY_QP, MLX4_CMD_TIME_CLASS_A); - if (!err) - memcpy(context, mailbox->buf + 8, sizeof *context); - - mlx4_free_cmd_mailbox(dev, mailbox); - return err; -} -EXPORT_SYMBOL_GPL(mlx4_qp_query); - -int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt, - struct mlx4_qp_context *context, - struct mlx4_qp *qp, enum mlx4_qp_state *qp_state) -{ - int err; - int i; - enum mlx4_qp_state states[] = { - MLX4_QP_STATE_RST, - MLX4_QP_STATE_INIT, - MLX4_QP_STATE_RTR, - MLX4_QP_STATE_RTS - }; - - for (i = 0; i < ARRAY_SIZE(states) - 1; i++) { - context->flags &= cpu_to_be32(~(0xf << 28)); - context->flags |= cpu_to_be32(states[i + 1] << 28); - err = mlx4_qp_modify(dev, mtt, states[i], states[i + 1], - context, 0, 0, qp); - if (err) { - mlx4_err(dev, "Failed to bring QP to state: " - "%d with error: %d\n", - states[i + 1], err); - return err; - } - - *qp_state = states[i + 1]; - } - - return 0; -} -EXPORT_SYMBOL_GPL(mlx4_qp_to_ready); |