3d73c2884f
Commit ee49bd93 ("mlx4_core: Reset device when internal error is
detected") introduced some section mismatch problems when
CONFIG_HOTPLUG=n, because the error recovery code tears down and
reinitializes the device after everything is loaded, which ends up
calling into lots of code marked __devinit and __devexit from regular
.text. Fix this by getting rid of these now-incorrect section
markers.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
380 lines
9.2 KiB
C
380 lines
9.2 KiB
C
/*
|
|
* Copyright (c) 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/init.h>
|
|
#include <linux/string.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/mlx4/cmd.h>
|
|
|
|
#include "mlx4.h"
|
|
|
|
struct mlx4_mgm {
|
|
__be32 next_gid_index;
|
|
__be32 members_count;
|
|
u32 reserved[2];
|
|
u8 gid[16];
|
|
__be32 qp[MLX4_QP_PER_MGM];
|
|
};
|
|
|
|
static const u8 zero_gid[16]; /* automatically initialized to 0 */
|
|
|
|
static int mlx4_READ_MCG(struct mlx4_dev *dev, int index,
|
|
struct mlx4_cmd_mailbox *mailbox)
|
|
{
|
|
return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG,
|
|
MLX4_CMD_TIME_CLASS_A);
|
|
}
|
|
|
|
static int mlx4_WRITE_MCG(struct mlx4_dev *dev, int index,
|
|
struct mlx4_cmd_mailbox *mailbox)
|
|
{
|
|
return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG,
|
|
MLX4_CMD_TIME_CLASS_A);
|
|
}
|
|
|
|
static int mlx4_MGID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
|
|
u16 *hash)
|
|
{
|
|
u64 imm;
|
|
int err;
|
|
|
|
err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, 0, MLX4_CMD_MGID_HASH,
|
|
MLX4_CMD_TIME_CLASS_A);
|
|
|
|
if (!err)
|
|
*hash = imm;
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Caller must hold MCG table semaphore. gid and mgm parameters must
|
|
* be properly aligned for command interface.
|
|
*
|
|
* Returns 0 unless a firmware command error occurs.
|
|
*
|
|
* If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
|
|
* and *mgm holds MGM entry.
|
|
*
|
|
* if GID is found in AMGM, *index = index in AMGM, *prev = index of
|
|
* previous entry in hash chain and *mgm holds AMGM entry.
|
|
*
|
|
* If no AMGM exists for given gid, *index = -1, *prev = index of last
|
|
* entry in hash chain and *mgm holds end of hash chain.
|
|
*/
|
|
static int find_mgm(struct mlx4_dev *dev,
|
|
u8 *gid, struct mlx4_cmd_mailbox *mgm_mailbox,
|
|
u16 *hash, int *prev, int *index)
|
|
{
|
|
struct mlx4_cmd_mailbox *mailbox;
|
|
struct mlx4_mgm *mgm = mgm_mailbox->buf;
|
|
u8 *mgid;
|
|
int err;
|
|
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev);
|
|
if (IS_ERR(mailbox))
|
|
return -ENOMEM;
|
|
mgid = mailbox->buf;
|
|
|
|
memcpy(mgid, gid, 16);
|
|
|
|
err = mlx4_MGID_HASH(dev, mailbox, hash);
|
|
mlx4_free_cmd_mailbox(dev, mailbox);
|
|
if (err)
|
|
return err;
|
|
|
|
if (0)
|
|
mlx4_dbg(dev, "Hash for %04x:%04x:%04x:%04x:"
|
|
"%04x:%04x:%04x:%04x is %04x\n",
|
|
be16_to_cpu(((__be16 *) gid)[0]),
|
|
be16_to_cpu(((__be16 *) gid)[1]),
|
|
be16_to_cpu(((__be16 *) gid)[2]),
|
|
be16_to_cpu(((__be16 *) gid)[3]),
|
|
be16_to_cpu(((__be16 *) gid)[4]),
|
|
be16_to_cpu(((__be16 *) gid)[5]),
|
|
be16_to_cpu(((__be16 *) gid)[6]),
|
|
be16_to_cpu(((__be16 *) gid)[7]),
|
|
*hash);
|
|
|
|
*index = *hash;
|
|
*prev = -1;
|
|
|
|
do {
|
|
err = mlx4_READ_MCG(dev, *index, mgm_mailbox);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!memcmp(mgm->gid, zero_gid, 16)) {
|
|
if (*index != *hash) {
|
|
mlx4_err(dev, "Found zero MGID in AMGM.\n");
|
|
err = -EINVAL;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
if (!memcmp(mgm->gid, gid, 16))
|
|
return err;
|
|
|
|
*prev = *index;
|
|
*index = be32_to_cpu(mgm->next_gid_index) >> 6;
|
|
} while (*index);
|
|
|
|
*index = -1;
|
|
return err;
|
|
}
|
|
|
|
int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16])
|
|
{
|
|
struct mlx4_priv *priv = mlx4_priv(dev);
|
|
struct mlx4_cmd_mailbox *mailbox;
|
|
struct mlx4_mgm *mgm;
|
|
u32 members_count;
|
|
u16 hash;
|
|
int index, prev;
|
|
int link = 0;
|
|
int i;
|
|
int err;
|
|
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev);
|
|
if (IS_ERR(mailbox))
|
|
return PTR_ERR(mailbox);
|
|
mgm = mailbox->buf;
|
|
|
|
mutex_lock(&priv->mcg_table.mutex);
|
|
|
|
err = find_mgm(dev, gid, mailbox, &hash, &prev, &index);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (index != -1) {
|
|
if (!memcmp(mgm->gid, zero_gid, 16))
|
|
memcpy(mgm->gid, gid, 16);
|
|
} else {
|
|
link = 1;
|
|
|
|
index = mlx4_bitmap_alloc(&priv->mcg_table.bitmap);
|
|
if (index == -1) {
|
|
mlx4_err(dev, "No AMGM entries left\n");
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
index += dev->caps.num_mgms;
|
|
|
|
err = mlx4_READ_MCG(dev, index, mailbox);
|
|
if (err)
|
|
goto out;
|
|
|
|
memset(mgm, 0, sizeof *mgm);
|
|
memcpy(mgm->gid, gid, 16);
|
|
}
|
|
|
|
members_count = be32_to_cpu(mgm->members_count);
|
|
if (members_count == MLX4_QP_PER_MGM) {
|
|
mlx4_err(dev, "MGM at index %x is full.\n", index);
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < members_count; ++i)
|
|
if (mgm->qp[i] == cpu_to_be32(qp->qpn)) {
|
|
mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn);
|
|
err = 0;
|
|
goto out;
|
|
}
|
|
|
|
mgm->qp[members_count++] = cpu_to_be32(qp->qpn);
|
|
mgm->members_count = cpu_to_be32(members_count);
|
|
|
|
err = mlx4_WRITE_MCG(dev, index, mailbox);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (!link)
|
|
goto out;
|
|
|
|
err = mlx4_READ_MCG(dev, prev, mailbox);
|
|
if (err)
|
|
goto out;
|
|
|
|
mgm->next_gid_index = cpu_to_be32(index << 6);
|
|
|
|
err = mlx4_WRITE_MCG(dev, prev, mailbox);
|
|
if (err)
|
|
goto out;
|
|
|
|
out:
|
|
if (err && link && index != -1) {
|
|
if (index < dev->caps.num_mgms)
|
|
mlx4_warn(dev, "Got AMGM index %d < %d",
|
|
index, dev->caps.num_mgms);
|
|
else
|
|
mlx4_bitmap_free(&priv->mcg_table.bitmap,
|
|
index - dev->caps.num_mgms);
|
|
}
|
|
mutex_unlock(&priv->mcg_table.mutex);
|
|
|
|
mlx4_free_cmd_mailbox(dev, mailbox);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
|
|
|
|
int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16])
|
|
{
|
|
struct mlx4_priv *priv = mlx4_priv(dev);
|
|
struct mlx4_cmd_mailbox *mailbox;
|
|
struct mlx4_mgm *mgm;
|
|
u32 members_count;
|
|
u16 hash;
|
|
int prev, index;
|
|
int i, loc;
|
|
int err;
|
|
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev);
|
|
if (IS_ERR(mailbox))
|
|
return PTR_ERR(mailbox);
|
|
mgm = mailbox->buf;
|
|
|
|
mutex_lock(&priv->mcg_table.mutex);
|
|
|
|
err = find_mgm(dev, gid, mailbox, &hash, &prev, &index);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (index == -1) {
|
|
mlx4_err(dev, "MGID %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x "
|
|
"not found\n",
|
|
be16_to_cpu(((__be16 *) gid)[0]),
|
|
be16_to_cpu(((__be16 *) gid)[1]),
|
|
be16_to_cpu(((__be16 *) gid)[2]),
|
|
be16_to_cpu(((__be16 *) gid)[3]),
|
|
be16_to_cpu(((__be16 *) gid)[4]),
|
|
be16_to_cpu(((__be16 *) gid)[5]),
|
|
be16_to_cpu(((__be16 *) gid)[6]),
|
|
be16_to_cpu(((__be16 *) gid)[7]));
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
members_count = be32_to_cpu(mgm->members_count);
|
|
for (loc = -1, i = 0; i < members_count; ++i)
|
|
if (mgm->qp[i] == cpu_to_be32(qp->qpn))
|
|
loc = i;
|
|
|
|
if (loc == -1) {
|
|
mlx4_err(dev, "QP %06x not found in MGM\n", qp->qpn);
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
|
|
mgm->members_count = cpu_to_be32(--members_count);
|
|
mgm->qp[loc] = mgm->qp[i - 1];
|
|
mgm->qp[i - 1] = 0;
|
|
|
|
err = mlx4_WRITE_MCG(dev, index, mailbox);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (i != 1)
|
|
goto out;
|
|
|
|
if (prev == -1) {
|
|
/* Remove entry from MGM */
|
|
int amgm_index = be32_to_cpu(mgm->next_gid_index) >> 6;
|
|
if (amgm_index) {
|
|
err = mlx4_READ_MCG(dev, amgm_index, mailbox);
|
|
if (err)
|
|
goto out;
|
|
} else
|
|
memset(mgm->gid, 0, 16);
|
|
|
|
err = mlx4_WRITE_MCG(dev, index, mailbox);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (amgm_index) {
|
|
if (amgm_index < dev->caps.num_mgms)
|
|
mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d",
|
|
index, amgm_index, dev->caps.num_mgms);
|
|
else
|
|
mlx4_bitmap_free(&priv->mcg_table.bitmap,
|
|
amgm_index - dev->caps.num_mgms);
|
|
}
|
|
} else {
|
|
/* Remove entry from AMGM */
|
|
int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
|
|
err = mlx4_READ_MCG(dev, prev, mailbox);
|
|
if (err)
|
|
goto out;
|
|
|
|
mgm->next_gid_index = cpu_to_be32(cur_next_index << 6);
|
|
|
|
err = mlx4_WRITE_MCG(dev, prev, mailbox);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (index < dev->caps.num_mgms)
|
|
mlx4_warn(dev, "entry %d had next AMGM index %d < %d",
|
|
prev, index, dev->caps.num_mgms);
|
|
else
|
|
mlx4_bitmap_free(&priv->mcg_table.bitmap,
|
|
index - dev->caps.num_mgms);
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&priv->mcg_table.mutex);
|
|
|
|
mlx4_free_cmd_mailbox(dev, mailbox);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mlx4_multicast_detach);
|
|
|
|
int mlx4_init_mcg_table(struct mlx4_dev *dev)
|
|
{
|
|
struct mlx4_priv *priv = mlx4_priv(dev);
|
|
int err;
|
|
|
|
err = mlx4_bitmap_init(&priv->mcg_table.bitmap,
|
|
dev->caps.num_amgms, dev->caps.num_amgms - 1, 0);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_init(&priv->mcg_table.mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void mlx4_cleanup_mcg_table(struct mlx4_dev *dev)
|
|
{
|
|
mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap);
|
|
}
|