/*
* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
* 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/sched.h>
#include <linux/pci.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/mlx4/cmd.h>
#include <linux/mlx4/qp.h>
#include "mlx4.h"
#include "fw.h"
#define MLX4_MAC_VALID (1ull << 63)
#define MLX4_MAC_MASK 0x7fffffffffffffffULL
#define ETH_ALEN 6
struct mac_res {
struct list_head list;
u64 mac;
u8 port;
};
struct res_common {
struct list_head list;
u32 res_id;
int owner;
int state;
int from_state;
int to_state;
int removing;
};
enum {
RES_ANY_BUSY = 1
};
struct res_gid {
struct list_head list;
u8 gid[16];
enum mlx4_protocol prot;
};
enum res_qp_states {
RES_QP_BUSY = RES_ANY_BUSY,
/* QP number was allocated */
RES_QP_RESERVED,
/* ICM memory for QP context was mapped */
RES_QP_MAPPED,
/* QP is in hw ownership */
RES_QP_HW
};
static inline const char *qp_states_str(enum res_qp_states state)
{
switch (state) {
case RES_QP_BUSY: return "RES_QP_BUSY";
case RES_QP_RESERVED: return "RES_QP_RESERVED";
case RES_QP_MAPPED: return "RES_QP_MAPPED";
case RES_QP_HW: return "RES_QP_HW";
default: return "Unknown";
}
}
struct res_qp {
struct res_common com;
struct res_mtt *mtt;
struct res_cq *rcq;
struct res_cq *scq;
struct res_srq *srq;
struct list_head mcg_list;
spinlock_t mcg_spl;
int local_qpn;
};
enum res_mtt_states {
RES_MTT_BUSY = RES_ANY_BUSY,
RES_MTT_ALLOCATED,
};
static inline const char *mtt_states_str(enum res_mtt_states state)
{
switch (state) {
case RES_MTT_BUSY: return "RES_MTT_BUSY";
case RES_MTT_ALLOCATED: return "RES_MTT_ALLOCATED";
default: return "Unknown";
}
}
struct res_mtt {
struct res_common com;
int order;
atomic_t ref_count;
};
enum res_mpt_states {
RES_MPT_BUSY = RES_ANY_BUSY,
RES_MPT_RESERVED,
RES_MPT_MAPPED,
RES_MPT_HW,
};
struct res_mpt {
struct res_common com;
struct res_mtt *mtt;
int key;
};
enum res_eq_states {
RES_EQ_BUSY = RES_ANY_BUSY,
RES_EQ_RESERVED,
RES_EQ_HW,
};
struct res_eq {
struct res_common com;
struct res_mtt *mtt;
};
enum res_cq_states {
RES_CQ_BUSY = RES_ANY_BUSY,
RES_CQ_ALLOCATED,
RES_CQ_HW,
};
struct res_cq {
struct res_common com;
struct res_mtt *mtt;
atomic_t ref_count;
};
enum res_srq_states {
RES_SRQ_BUSY = RES_ANY_BUSY,
RES_SRQ_ALLOCATED,
RES_SRQ_HW,
};
static inline const char *srq_states_str(enum res_srq_states state)
{
switch (state) {
case RES_SRQ_BUSY: return "RES_SRQ_BUSY";
case RES_SRQ_ALLOCATED: return "RES_SRQ_ALLOCATED";
case RES_SRQ_HW: return "RES_SRQ_HW";
default: return "Unknown";
}
}
struct res_srq {
struct res_common com;
struct res_mtt *mtt;
struct res_cq *cq;
atomic_t ref_count;
};
enum res_counter_states {
RES_COUNTER_BUSY = RES_ANY_BUSY,
RES_COUNTER_ALLOCATED,
};
static inline const char *counter_states_str(enum res_counter_states state)
{
switch (state) {
case RES_COUNTER_BUSY: return "RES_COUNTER_BUSY";
case RES_COUNTER_ALLOCATED: return "RES_COUNTER_ALLOCATED";
default: return "Unknown";
}
}
struct res_counter {
struct res_common com;
int port;
};
/* For Debug uses */
static const char *ResourceType(enum mlx4_resource rt)
{
switch (rt) {
case RES_QP: return "RES_QP";
case RES_CQ: return "RES_CQ";
case RES_SRQ: return "RES_SRQ";
case RES_MPT: return "RES_MPT";
case RES_MTT: return "RES_MTT";
case RES_MAC: return "RES_MAC";
case RES_EQ: return "RES_EQ";
case RES_COUNTER: return "RES_COUNTER";
default: return "Unknown resource type !!!";
};
}
/* dummy procedures */
int __mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
{
return 0;
}
void __mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
{
}
/* end dummies */
int mlx4_init_resource_tracker(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
int i;
int t;
priv->mfunc.master.res_tracker.slave_list =
kzalloc(dev->num_slaves * sizeof(struct slave_list),
GFP_KERNEL);
if (!priv->mfunc.master.res_tracker.slave_list)
return -ENOMEM;
for (i = 0 ; i < dev->num_slaves; i++) {
for (t = 0; t < MLX4_NUM_OF_RESOURCE_TYPE; ++t)
INIT_LIST_HEAD(&priv->mfunc.master.res_tracker.
slave_list[i].res_list[t]);
mutex_init(&priv->mfunc.master.res_tracker.slave_list[i].mutex);
}
mlx4_dbg(dev, "Started init_resource_tracker: %ld slaves\n",
dev->num_slaves);
for (i = 0 ; i < MLX4_NUM_OF_RESOURCE_TYPE; i++)
INIT_RADIX_TREE(&priv->mfunc.master.res_tracker.res_tree[i],
GFP_ATOMIC|__GFP_NOWARN);
spin_lock_init(&priv->mfunc.master.res_tracker.lock);
return 0 ;
}
void mlx4_free_resource_tracker(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
int i;
if (priv->mfunc.master.res_tracker.slave_list) {
for (i = 0 ; i < dev->num_slaves; i++)
mlx4_delete_all_resources_for_slave(dev, i);
kfree(priv->mfunc.master.res_tracker.slave_list);
}
}
static void update_ud_gid(struct mlx4_dev *dev,
struct mlx4_qp_context *qp_ctx, u8 slave)
{
u32 ts = (be32_to_cpu(qp_ctx->flags) >> 16) & 0xff;
if (MLX4_QP_ST_UD == ts)
qp_ctx->pri_path.mgid_index = 0x80 | slave;
mlx4_dbg(dev, "slave %d, new gid index: 0x%x ",
slave, qp_ctx->pri_path.mgid_index);
}
static int mpt_mask(struct mlx4_dev *dev)
{
return dev->caps.num_mpts - 1;
}
static void *find_res(struct mlx4_dev *dev, int res_id,
enum mlx4_resource type)
{
struct mlx4_priv *priv = mlx4_priv(dev);
return radix_tree_lookup(&priv->mfunc.master.res_tracker.res_tree[type],
res_id);
}
static int get_res(struct mlx4_dev *dev, int slave, int res_id,
enum mlx4_resource type,
void *res)
{
struct res_common *r;
int err = 0;
spin_lock_irq(mlx4_tlock(dev));
r = find_res(dev, res_id, type);
if (!r) {
err = -ENONET;
goto exit;
}
if (r->state == RES_ANY_BUSY) {
err = -EBUSY;
goto exit;
}
if (r->owner != slave) {
err = -EPERM;
goto exit;
}
r->from_state = r->state;
r->state = RES_ANY_BUSY;
mlx4_dbg(dev, "res %s id 0x%x to busy\n",
ResourceType(type), r->res_id);
if (res)
*((struct res_common **)res) = r;
exit:
spin_unlock_irq(mlx4_tlock(dev));
return err;
}
int mlx4_get_slave_from_resource_id(struct mlx4_dev *dev,
enum mlx4_resource type,
int res_id, int *slave)
{
struct res_common *r;
int err = -ENOENT;
int id = res_id;
if (type == RES_QP)
id &= 0x7fffff;
spin_lock_irq(mlx4_tlock(dev));
r = find_res(dev, id, type);
if (r) {
*slave = r->owner;
err = 0;
}
spin_unlock_irq(mlx4_tlock(dev));
return err;
}
static void put_res(struct mlx4_dev *dev, int slave, int res_id,
enum mlx4_resource type)
{
struct res_common *r;
spin_lock_irq(mlx4_tlock(dev));
r = find_res(dev, res_id, type);
if (r)
r->state = r->from_state;
spin_unlock_irq(mlx4_tlock(dev));
}
static struct res_common *alloc_qp_tr(int id)
{
struct res_qp *ret;
ret = kzalloc(sizeof *ret, GFP_KERNEL);
if (!ret)
return NULL;
ret->com.res_id = id;
ret->com.state = RES_QP_RESERVED;
INIT_LIST_HEAD(&ret->mcg_list);
spin_lock_init(&ret->mcg_spl);
return &ret->com;
}
static struct res_common *alloc_mtt_tr(int id, int order)
{
struct res_mtt *ret;
ret = kzalloc(sizeof *ret, GFP_KERNEL);
if (!ret)
return NULL;
ret->com.res_id = id;
ret->order = order;
ret->com.state = RES_MTT_ALLOCATED;
atomic_set(&ret->ref_count, 0);
return &ret->com;
}
static struct res_common *alloc_mpt_tr(int id, int key)
{
struct res_mpt *ret;
ret = kzalloc(sizeof *ret, GFP_KERNEL);
if (!ret)
return NULL;
ret->com.res_id = id;
ret->com.state = RES_MPT_RESERVED;
ret->key = key;
return &ret->com;
}
static struct res_common *alloc_eq_tr(int id)
{
struct res_eq *ret;
ret = kzalloc(sizeof *ret, GFP_KERNEL);
if (!ret)
return NULL;
ret->com.res_id = id;
ret->com.state = RES_EQ_RESERVED;
return &ret->com;
}
static struct res_common *alloc_cq_tr(int id)
{
struct res_cq *ret;
ret = kzalloc(sizeof *ret, GFP_KERNEL);
if (!ret)
return NULL;
ret->com.res_id = id;
ret->com.state = RES_CQ_ALLOCATED;
atomic_set(&ret->ref_count, 0);
return &ret->com;
}
static struct res_common *alloc_srq_tr(int id)
{
struct res_srq *ret;
ret = kzalloc(sizeof *ret, GFP_KERNEL);
if (!ret)
return NULL;
ret->com.res_id = id;
ret->com.state = RES_SRQ_ALLOCATED;
atomic_set(&ret->ref_count, 0);
return &ret->com;
}
static struct res_common *alloc_counter_tr(int id)
{
struct res_counter *ret;
ret = kzalloc(sizeof *ret, GFP_KERNEL);
if (!ret)
return NULL;
ret->com.res_id = id;
ret->com.state = RES_COUNTER_ALLOCATED;
return &ret->com;
}
static struct res_common *alloc_tr(int id, enum mlx4_resource type, int slave,
int extra)
{
struct res_common *ret;
switch (type) {
case RES_QP:
ret = alloc_qp_tr(id);
break;
case RES_MPT:
ret = alloc_mpt_tr(id, extra);
break;
case RES_MTT:
ret = alloc_mtt_tr(id, extra);
break;
case RES_EQ:
ret = alloc_eq_tr(id);
break;
case RES_CQ:
ret = alloc_cq_tr(id);
break;
case RES_SRQ:
ret = alloc_srq_tr(id);
break;
case RES_MAC:
printk(KERN_ERR "implementation missing\n");
return NULL;
case RES_COUNTER:
ret = alloc_counter_tr(id);
break;
default:
return NULL;
}
if (ret)
ret->owner = slave;
return ret;
}
static int add_res_range(struct mlx4_dev *dev, int slave, int base, int count,
enum mlx4_resource type, int extra)
{
int i;
int err;
struct mlx4_priv *priv = mlx4_priv(dev);
struct res_common **res_arr;
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct radix_tree_root *root = &tracker->res_tree[type];
res_arr = kzalloc(count * sizeof *res_arr, GFP_KERNEL);
if (!res_arr)
return -ENOMEM;
for (i = 0; i < count; ++i) {
res_arr[i] = alloc_tr(base + i, type, slave, extra);
if (!res_arr[i]) {
for (--i; i >= 0; --i)
kfree(res_arr[i]);
kfree(res_arr);
return -ENOMEM;
}
}
spin_lock_irq(mlx4_tlock(dev));
for (i = 0; i < count; ++i) {
if (find_res(dev, base + i, type)) {
err = -EEXIST;
goto undo;
}
err = radix_tree_insert(root, base + i, res_arr[i]);
if (err)
goto undo;
list_add_tail(&res_arr[i]->list,
&tracker->slave_list[slave].res_list[type]);
}
spin_unlock_irq(mlx4_tlock(dev));
kfree(res_arr);
return 0;
undo:
for (--i; i >= base; --i)
radix_tree_delete(&tracker->res_tree[type], i);
spin_unlock_irq(mlx4_tlock(dev));
for (i = 0; i < count; ++i)
kfree(res_arr[i]);
kfree(res_arr);
return err;
}
static int remove_qp_ok(struct res_qp *res)
{
if (res->com.state == RES_QP_BUSY)
return -EBUSY;
else if (res->com.state != RES_QP_RESERVED)
return -EPERM;
return 0;
}
static int remove_mtt_ok(struct res_mtt *res, int order)
{
if (res->com.state == RES_MTT_BUSY ||
atomic_read(&res->ref_count)) {
printk(KERN_DEBUG "%s-%d: state %s, ref_count %d\n",
__func__, __LINE__,
mtt_states_str(res->com.state),
atomic_read(&res->ref_count));
return -EBUSY;
} else if (res->com.state != RES_MTT_ALLOCATED)
return -EPERM;
else if (res->order != order)
return -EINVAL;
return 0;
}
static int remove_mpt_ok(struct res_mpt *res)
{
if (res->com.state == RES_MPT_BUSY)
return -EBUSY;
else if (res->com.state != RES_MPT_RESERVED)
return -EPERM;
return 0;
}
static int remove_eq_ok(struct res_eq *res)
{
if (res->com.state == RES_MPT_BUSY)
return -EBUSY;
else if (res->com.state != RES_MPT_RESERVED)
return -EPERM;
return 0;
}
static int remove_counter_ok(struct res_counter *res)
{
if (res->com.state == RES_COUNTER_BUSY)
return -EBUSY;
else if (res->com.state != RES_COUNTER_ALLOCATED)
return -EPERM;
return 0;
}
static int remove_cq_ok(struct res_cq *res)
{
if (res->com.state == RES_CQ_BUSY)
return -EBUSY;
else if (res->com.state != RES_CQ_ALLOCATED)
return -EPERM;
return 0;
}
static int remove_srq_ok(struct res_srq *res)
{
if (res->com.state == RES_SRQ_BUSY)
return -EBUSY;
else if (res->com.state != RES_SRQ_ALLOCATED)
return -EPERM;
return 0;
}
static int remove_ok(struct res_common *res, enum mlx4_resource type, int extra)
{
switch (type) {
case RES_QP:
return remove_qp_ok((struct res_qp *)res);
case RES_CQ:
return remove_cq_ok((struct res_cq *)res);
case RES_SRQ:
return remove_srq_ok((struct res_srq *)res);
case RES_MPT:
return remove_mpt_ok((struct res_mpt *)res);
case RES_MTT:
return remove_mtt_ok((struct res_mtt *)res, extra);
case RES_MAC:
return -ENOSYS;
case RES_EQ:
return remove_eq_ok((struct res_eq *)res);
case RES_COUNTER:
return remove_counter_ok((struct res_counter *)res);
default:
return -EINVAL;
}
}
static int rem_res_range(struct mlx4_dev *dev, int slave, int base, int count,
enum mlx4_resource type, int extra)
{
int i;
int err;
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct res_common *r;
spin_lock_irq(mlx4_tlock(dev));
for (i = base; i < base + count; ++i) {
r = radix_tree_lookup(&tracker->res_tree[type], i);
if (!r) {
err = -ENOENT;
goto out;
}
if (r->owner != slave) {
err = -EPERM;
goto out;
}
err = remove_ok(r, type, extra);
if (err)
goto out;
}
for (i = base; i < base + count; ++i) {
r = radix_tree_lookup(&tracker->res_tree[type], i);
radix_tree_delete(&tracker->res_tree[type], i);
list_del(&r->list);
kfree(r);
}
err = 0;
out:
spin_unlock_irq(mlx4_tlock(dev));
return err;
}
static int qp_res_start_move_to(struct mlx4_dev *dev, int slave, int qpn,
enum res_qp_states state, struct res_qp **qp,
int alloc)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct res_qp *r;
int err = 0;
spin_lock_irq(mlx4_tlock(dev));
r = radix_tree_lookup(&tracker->res_tree[RES_QP], qpn);
if (!r)
err = -ENOENT;
else if (r->com.owner != slave)
err = -EPERM;
else {
switch (state) {
case RES_QP_BUSY:
mlx4_dbg(dev, "%s: failed RES_QP, 0x%x\n",
__func__, r->com.res_id);
err = -EBUSY;
break;
case RES_QP_RESERVED:
if (r->com.state == RES_QP_MAPPED && !alloc)
break;
mlx4_dbg(dev, "failed RES_QP, 0x%x\n", r->com.res_id);
err = -EINVAL;
break;
case RES_QP_MAPPED:
if ((r->com.state == RES_QP_RESERVED && alloc) ||
r->com.state == RES_QP_HW)
break;
else {
mlx4_dbg(dev, "failed RES_QP, 0x%x\n",
r->com.res_id);
err = -EINVAL;
}
break;
case RES_QP_HW:
if (r->com.state != RES_QP_MAPPED)
err = -EINVAL;
break;
default:
err = -EINVAL;
}
if (!err) {
r->com.from_state = r->com.state;
r->com.to_state = state;
r->com.state = RES_QP_BUSY;
if (qp)
*qp = (struct res_qp *)r;
}
}
spin_unlock_irq(mlx4_tlock(dev));
return err;
}
static int mr_res_start_move_to(struct mlx4_dev *dev, int slave, int index,
enum res_mpt_states state, struct res_mpt **mpt)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct res_mpt *r;
int err = 0;
spin_lock_irq(mlx4_tlock(dev));
r = radix_tree_lookup(&tracker->res_tree[RES_MPT], index);
if (!r)
err = -ENOENT;
else if (r->com.owner != slave)
err = -EPERM;
else {
switch (state) {
case RES_MPT_BUSY:
err = -EINVAL;
break;
case RES_MPT_RESERVED:
if (r->com.state != RES_MPT_MAPPED)
err = -EINVAL;
break;
case RES_MPT_MAPPED:
if (r->com.state != RES_MPT_RESERVED &&
r->com.state != RES_MPT_HW)
err = -EINVAL;
break;
case RES_MPT_HW:
if (r->com.state != RES_MPT_MAPPED)
err = -EINVAL;
break;
default:
err = -EINVAL;
}
if (!err) {
r->com.from_state = r->com.state;
r->com.to_state = state;
r->com.state = RES_MPT_BUSY;
if (mpt)
*mpt = (struct res_mpt *)r;
}
}
spin_unlock_irq(mlx4_tlock(dev));
return err;
}
static int eq_res_start_move_to(struct mlx4_dev *dev, int slave, int index,
enum res_eq_states state, struct res_eq **eq)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct res_eq *r;
int err = 0;
spin_lock_irq(mlx4_tlock(dev));
r = radix_tree_lookup(&tracker->res_tree[RES_EQ], index);
if (!r)
err = -ENOENT;
else if (r->com.owner != slave)
err = -EPERM;
else {
switch (state) {
case RES_EQ_BUSY:
err = -EINVAL;
break;
case RES_EQ_RESERVED:
if (r->com.state != RES_EQ_HW)
err = -EINVAL;
break;
case RES_EQ_HW:
if (r->com.state != RES_EQ_RESERVED)
err = -EINVAL;
break;
default:
err = -EINVAL;
}
if (!err) {
r->com.from_state = r->com.state;
r->com.to_state = state;
r->com.state = RES_EQ_BUSY;
if (eq)
*eq = r;
}
}
spin_unlock_irq(mlx4_tlock(dev));
return err;
}
static int cq_res_start_move_to(struct mlx4_dev *dev, int slave, int cqn,
enum res_cq_states state, struct res_cq **cq)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct res_cq *r;
int err;
spin_lock_irq(mlx4_tlock(dev));
r = radix_tree_lookup(&tracker->res_tree[RES_CQ], cqn);
if (!r)
err = -ENOENT;
else if (r->com.owner != slave)
err = -EPERM;
else {
switch (state) {
case RES_CQ_BUSY:
err = -EBUSY;
break;
case RES_CQ_ALLOCATED:
if (r->com.state != RES_CQ_HW)
err = -EINVAL;
else if (atomic_read(&r->ref_count))
err = -EBUSY;
else
err = 0;
break;
case RES_CQ_HW:
if (r->com.state != RES_CQ_ALLOCATED)
err = -EINVAL;
else
err = 0;
break;
default:
err = -EINVAL;
}
if (!err) {
r->com.from_state = r->com.state;
r->com.to_state = state;
r->com.state = RES_CQ_BUSY;
if (cq)
*cq = r;
}
}
spin_unlock_irq(mlx4_tlock(dev));
return err;
}
static int srq_res_start_move_to(struct mlx4_dev *dev, int slave, int index,
enum res_cq_states state, struct res_srq **srq)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct res_srq *r;
int err = 0;
spin_lock_irq(mlx4_tlock(dev));
r = radix_tree_lookup(&tracker->res_tree[RES_SRQ], index);
if (!r)
err = -ENOENT;
else if (r->com.owner != slave)
err = -EPERM;
else {
switch (state) {
case RES_SRQ_BUSY:
err = -EINVAL;
break;
case RES_SRQ_ALLOCATED:
if (r->com.state != RES_SRQ_HW)
err = -EINVAL;
else if (atomic_read(&r->ref_count))
err = -EBUSY;
break;
case RES_SRQ_HW:
if (r->com.state != RES_SRQ_ALLOCATED)
err = -EINVAL;
break;
default:
err = -EINVAL;
}
if (!err) {
r->com.from_state = r->com.state;
r->com.to_state = state;
r->com.state = RES_SRQ_BUSY;
if (srq)
*srq = r;
}
}
spin_unlock_irq(mlx4_tlock(dev));
return err;
}
static void res_abort_move(struct mlx4_dev *dev, int slave,
enum mlx4_resource type, int id)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct res_common *r;
spin_lock_irq(mlx4_tlock(dev));
r = radix_tree_lookup(&tracker->res_tree[type], id);
if (r && (r->owner == slave))
r->state = r->from_state;
spin_unlock_irq(mlx4_tlock(dev));
}
static void res_end_move(struct mlx4_dev *dev, int slave,
enum mlx4_resource type, int id)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct res_common *r;
spin_lock_irq(mlx4_tlock(dev));
r = radix_tree_lookup(&tracker->res_tree[type], id);
if (r && (r->owner == slave))
r->state = r->to_state;
spin_unlock_irq(mlx4_tlock(dev));
}
static int valid_reserved(struct mlx4_dev *dev, int slave, int qpn)
{
return mlx4_is_qp_reserved(dev, qpn);
}
static int qp_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int err;
int count;
int align;
int base;
int qpn;
switch (op) {
case RES_OP_RESERVE:
count = get_param_l(&in_param);
align = get_param_h(&in_param);
err = __mlx4_qp_reserve_range(dev, count, align, &base);
if (err)
return err;
err = add_res_range(dev, slave, base, count, RES_QP, 0);
if (err) {
__mlx4_qp_release_range(dev, base, count);
return err;
}
set_param_l(out_param, base);
break;
case RES_OP_MAP_ICM:
qpn = get_param_l(&in_param) & 0x7fffff;
if (valid_reserved(dev, slave, qpn)) {
err = add_res_range(dev, slave, qpn, 1, RES_QP, 0);
if (err)
return err;
}
err = qp_res_start_move_to(dev, slave, qpn, RES_QP_MAPPED,
NULL, 1);
if (err)
return err;
if (!valid_reserved(dev, slave, qpn)) {
err = __mlx4_qp_alloc_icm(dev, qpn);
if (err) {
res_abort_move(dev, slave, RES_QP, qpn);
return err;
}
}
res_end_move(dev, slave, RES_QP, qpn);
break;
default:
err = -EINVAL;
break;
}
return err;
}
static int mtt_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int err = -EINVAL;
int base;
int order;
if (op != RES_OP_RESERVE_AND_MAP)
return err;
order = get_param_l(&in_param);
base = __mlx4_alloc_mtt_range(dev, order);
if (base == -1)
return -ENOMEM;
err = add_res_range(dev, slave, base, 1, RES_MTT, order);
if (err)
__mlx4_free_mtt_range(dev, base, order);
else
set_param_l(out_param, base);
return err;
}
static int mpt_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int err = -EINVAL;
int index;
int id;
struct res_mpt *mpt;
switch (op) {
case RES_OP_RESERVE:
index = __mlx4_mr_reserve(dev);
if (index == -1)
break;
id = index & mpt_mask(dev);
err = add_res_range(dev, slave, id, 1, RES_MPT, index);
if (err) {
__mlx4_mr_release(dev, index);
break;
}
set_param_l(out_param, index);
break;
case RES_OP_MAP_ICM:
index = get_param_l(&in_param);
id = index & mpt_mask(dev);
err = mr_res_start_move_to(dev, slave, id,
RES_MPT_MAPPED, &mpt);
if (err)
return err;
err = __mlx4_mr_alloc_icm(dev, mpt->key);
if (err) {
res_abort_move(dev, slave, RES_MPT, id);
return err;
}
res_end_move(dev, slave, RES_MPT, id);
break;
}
return err;
}
static int cq_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int cqn;
int err;
switch (op) {
case RES_OP_RESERVE_AND_MAP:
err = __mlx4_cq_alloc_icm(dev, &cqn);
if (err)
break;
err = add_res_range(dev, slave, cqn, 1, RES_CQ, 0);
if (err) {
__mlx4_cq_free_icm(dev, cqn);
break;
}
set_param_l(out_param, cqn);
break;
default:
err = -EINVAL;
}
return err;
}
static int srq_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int srqn;
int err;
switch (op) {
case RES_OP_RESERVE_AND_MAP:
err = __mlx4_srq_alloc_icm(dev, &srqn);
if (err)
break;
err = add_res_range(dev, slave, srqn, 1, RES_SRQ, 0);
if (err) {
__mlx4_srq_free_icm(dev, srqn);
break;
}
set_param_l(out_param, srqn);
break;
default:
err = -EINVAL;
}
return err;
}
static int mac_add_to_slave(struct mlx4_dev *dev, int slave, u64 mac, int port)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct mac_res *res;
res = kzalloc(sizeof *res, GFP_KERNEL);
if (!res)
return -ENOMEM;
res->mac = mac;
res->port = (u8) port;
list_add_tail(&res->list,
&tracker->slave_list[slave].res_list[RES_MAC]);
return 0;
}
static void mac_del_from_slave(struct mlx4_dev *dev, int slave, u64 mac,
int port)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct list_head *mac_list =
&tracker->slave_list[slave].res_list[RES_MAC];
struct mac_res *res, *tmp;
list_for_each_entry_safe(res, tmp, mac_list, list) {
if (res->mac == mac && res->port == (u8) port) {
list_del(&res->list);
kfree(res);
break;
}
}
}
static void rem_slave_macs(struct mlx4_dev *dev, int slave)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct list_head *mac_list =
&tracker->slave_list[slave].res_list[RES_MAC];
struct mac_res *res, *tmp;
list_for_each_entry_safe(res, tmp, mac_list, list) {
list_del(&res->list);
__mlx4_unregister_mac(dev, res->port, res->mac);
kfree(res);
}
}
static int mac_alloc_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int err = -EINVAL;
int port;
u64 mac;
if (op != RES_OP_RESERVE_AND_MAP)
return err;
port = get_param_l(out_param);
mac = in_param;
err = __mlx4_register_mac(dev, port, mac);
if (err >= 0) {
set_param_l(out_param, err);
err = 0;
}
if (!err) {
err = mac_add_to_slave(dev, slave, mac, port);
if (err)
__mlx4_unregister_mac(dev, port, mac);
}
return err;
}
int mlx4_ALLOC_RES_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)
{
int err;
int alop = vhcr->op_modifier;
switch (vhcr->in_modifier) {
case RES_QP:
err = qp_alloc_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
case RES_MTT:
err = mtt_alloc_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
case RES_MPT:
err = mpt_alloc_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
case RES_CQ:
err = cq_alloc_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
case RES_SRQ:
err = srq_alloc_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
case RES_MAC:
err = mac_alloc_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
default:
err = -EINVAL;
break;
}
return err;
}
static int qp_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param)
{
int err;
int count;
int base;
int qpn;
switch (op) {
case RES_OP_RESERVE:
base = get_param_l(&in_param) & 0x7fffff;
count = get_param_h(&in_param);
err = rem_res_range(dev, slave, base, count, RES_QP, 0);
if (err)
break;
__mlx4_qp_release_range(dev, base, count);
break;
case RES_OP_MAP_ICM:
qpn = get_param_l(&in_param) & 0x7fffff;
err = qp_res_start_move_to(dev, slave, qpn, RES_QP_RESERVED,
NULL, 0);
if (err)
return err;
if (!valid_reserved(dev, slave, qpn))
__mlx4_qp_free_icm(dev, qpn);
res_end_move(dev, slave, RES_QP, qpn);
if (valid_reserved(dev, slave, qpn))
err = rem_res_range(dev, slave, qpn, 1, RES_QP, 0);
break;
default:
err = -EINVAL;
break;
}
return err;
}
static int mtt_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int err = -EINVAL;
int base;
int order;
if (op != RES_OP_RESERVE_AND_MAP)
return err;
base = get_param_l(&in_param);
order = get_param_h(&in_param);
err = rem_res_range(dev, slave, base, 1, RES_MTT, order);
if (!err)
__mlx4_free_mtt_range(dev, base, order);
return err;
}
static int mpt_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param)
{
int err = -EINVAL;
int index;
int id;
struct res_mpt *mpt;
switch (op) {
case RES_OP_RESERVE:
index = get_param_l(&in_param);
id = index & mpt_mask(dev);
err = get_res(dev, slave, id, RES_MPT, &mpt);
if (err)
break;
index = mpt->key;
put_res(dev, slave, id, RES_MPT);
err = rem_res_range(dev, slave, id, 1, RES_MPT, 0);
if (err)
break;
__mlx4_mr_release(dev, index);
break;
case RES_OP_MAP_ICM:
index = get_param_l(&in_param);
id = index & mpt_mask(dev);
err = mr_res_start_move_to(dev, slave, id,
RES_MPT_RESERVED, &mpt);
if (err)
return err;
__mlx4_mr_free_icm(dev, mpt->key);
res_end_move(dev, slave, RES_MPT, id);
return err;
break;
default:
err = -EINVAL;
break;
}
return err;
}
static int cq_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int cqn;
int err;
switch (op) {
case RES_OP_RESERVE_AND_MAP:
cqn = get_param_l(&in_param);
err = rem_res_range(dev, slave, cqn, 1, RES_CQ, 0);
if (err)
break;
__mlx4_cq_free_icm(dev, cqn);
break;
default:
err = -EINVAL;
break;
}
return err;
}
static int srq_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int srqn;
int err;
switch (op) {
case RES_OP_RESERVE_AND_MAP:
srqn = get_param_l(&in_param);
err = rem_res_range(dev, slave, srqn, 1, RES_SRQ, 0);
if (err)
break;
__mlx4_srq_free_icm(dev, srqn);
break;
default:
err = -EINVAL;
break;
}
return err;
}
static int mac_free_res(struct mlx4_dev *dev, int slave, int op, int cmd,
u64 in_param, u64 *out_param)
{
int port;
int err = 0;
switch (op) {
case RES_OP_RESERVE_AND_MAP:
port = get_param_l(out_param);
mac_del_from_slave(dev, slave, in_param, port);
__mlx4_unregister_mac(dev, port, in_param);
break;
default:
err = -EINVAL;
break;
}
return err;
}
int mlx4_FREE_RES_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)
{
int err = -EINVAL;
int alop = vhcr->op_modifier;
switch (vhcr->in_modifier) {
case RES_QP:
err = qp_free_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param);
break;
case RES_MTT:
err = mtt_free_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
case RES_MPT:
err = mpt_free_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param);
break;
case RES_CQ:
err = cq_free_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
case RES_SRQ:
err = srq_free_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
case RES_MAC:
err = mac_free_res(dev, slave, vhcr->op_modifier, alop,
vhcr->in_param, &vhcr->out_param);
break;
default:
break;
}
return err;
}
/* ugly but other choices are uglier */
static int mr_phys_mpt(struct mlx4_mpt_entry *mpt)
{
return (be32_to_cpu(mpt->flags) >> 9) & 1;
}
static int mr_get_mtt_seg(struct mlx4_mpt_entry *mpt)
{
return (int)be64_to_cpu(mpt->mtt_seg) & 0xfffffff8;
}
static int mr_get_mtt_size(struct mlx4_mpt_entry *mpt)
{
return be32_to_cpu(mpt->mtt_sz);
}
static int mr_get_pdn(struct mlx4_mpt_entry *mpt)
{
return be32_to_cpu(mpt->pd_flags) & 0xffffff;
}
static int qp_get_mtt_seg(struct mlx4_qp_context *qpc)
{
return be32_to_cpu(qpc->mtt_base_addr_l) & 0xfffffff8;
}
static int srq_get_mtt_seg(struct mlx4_srq_context *srqc)
{
return be32_to_cpu(srqc->mtt_base_addr_l) & 0xfffffff8;
}
static int qp_get_mtt_size(struct mlx4_qp_context *qpc)
{
int page_shift = (qpc->log_page_size & 0x3f) + 12;
int log_sq_size = (qpc->sq_size_stride >> 3) & 0xf;
int log_sq_sride = qpc->sq_size_stride & 7;
int log_rq_size = (qpc->rq_size_stride >> 3) & 0xf;
int log_rq_stride = qpc->rq_size_stride & 7;
int srq = (be32_to_cpu(qpc->srqn) >> 24) & 1;
int rss = (be32_to_cpu(qpc->flags) >> 13) & 1;
int xrc = (be32_to_cpu(qpc->local_qpn) >> 23) & 1;
int sq_size;
int rq_size;
int total_pages;
int total_mem;
int page_offset = (be32_to_cpu(qpc->params2) >> 6) & 0x3f;
sq_size = 1 << (log_sq_size + log_sq_sride + 4);
rq_size = (srq|rss|xrc) ? 0 : (1 << (log_rq_size + log_rq_stride + 4));
total_mem = sq_size + rq_size;
total_pages =
roundup_pow_of_two((total_mem + (page_offset << 6)) >>
page_shift);
return total_pages;
}
static int qp_get_pdn(struct mlx4_qp_context *qpc)
{
return be32_to_cpu(qpc->pd) & 0xffffff;
}
static int pdn2slave(int pdn)
{
return (pdn >> NOT_MASKED_PD_BITS) - 1;
}
static int check_mtt_range(struct mlx4_dev *dev, int slave, int start,
int size, struct res_mtt *mtt)
{
int res_start = mtt->com.res_id * dev->caps.mtts_per_seg;
int res_size = (1 << mtt->order) * dev->caps.mtts_per_seg;
if (start < res_start || start + size > res_start + res_size)
return -EPERM;
return 0;
}
int mlx4_SW2HW_MPT_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)
{
int err;
int index = vhcr->in_modifier;
struct res_mtt *mtt;
struct res_mpt *mpt;
int mtt_base = (mr_get_mtt_seg(inbox->buf) / dev->caps.mtt_entry_sz) *
dev->caps.mtts_per_seg;
int phys;
int id;
id = index & mpt_mask(dev);
err = mr_res_start_move_to(dev, slave, id, RES_MPT_HW, &mpt);
if (err)
return err;
phys = mr_phys_mpt(inbox->buf);
if (!phys) {
err = get_res(dev, slave, mtt_base / dev->caps.mtts_per_seg,
RES_MTT, &mtt);
if (err)
goto ex_abort;
err = check_mtt_range(dev, slave, mtt_base,
mr_get_mtt_size(inbox->buf), mtt);
if (err)
goto ex_put;
mpt->mtt = mtt;
}
if (pdn2slave(mr_get_pdn(inbox->buf)) != slave) {
err = -EPERM;
goto ex_put;
}
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto ex_put;
if (!phys) {
atomic_inc(&mtt->ref_count);
put_res(dev, slave, mtt->com.res_id, RES_MTT);
}
res_end_move(dev, slave, RES_MPT, id);
return 0;
ex_put:
if (!phys)
put_res(dev, slave, mtt->com.res_id, RES_MTT);
ex_abort:
res_abort_move(dev, slave, RES_MPT, id);
return err;
}
int mlx4_HW2SW_MPT_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)
{
int err;
int index = vhcr->in_modifier;
struct res_mpt *mpt;
int id;
id = index & mpt_mask(dev);
err = mr_res_start_move_to(dev, slave, id, RES_MPT_MAPPED, &mpt);
if (err)
return err;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto ex_abort;
if (mpt->mtt)
atomic_dec(&mpt->mtt->ref_count);
res_end_move(dev, slave, RES_MPT, id);
return 0;
ex_abort:
res_abort_move(dev, slave, RES_MPT, id);
return err;
}
int mlx4_QUERY_MPT_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)
{
int err;
int index = vhcr->in_modifier;
struct res_mpt *mpt;
int id;
id = index & mpt_mask(dev);
err = get_res(dev, slave, id, RES_MPT, &mpt);
if (err)
return err;
if (mpt->com.from_state != RES_MPT_HW) {
err = -EBUSY;
goto out;
}
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
out:
put_res(dev, slave, id, RES_MPT);
return err;
}
static int qp_get_rcqn(struct mlx4_qp_context *qpc)
{
return be32_to_cpu(qpc->cqn_recv) & 0xffffff;
}
static int qp_get_scqn(struct mlx4_qp_context *qpc)
{
return be32_to_cpu(qpc->cqn_send) & 0xffffff;
}
static u32 qp_get_srqn(struct mlx4_qp_context *qpc)
{
return be32_to_cpu(qpc->srqn) & 0x1ffffff;
}
int mlx4_RST2INIT_QP_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)
{
int err;
int qpn = vhcr->in_modifier & 0x7fffff;
struct res_mtt *mtt;
struct res_qp *qp;
struct mlx4_qp_context *qpc = inbox->buf + 8;
int mtt_base = (qp_get_mtt_seg(qpc) / dev->caps.mtt_entry_sz) *
dev->caps.mtts_per_seg;
int mtt_size = qp_get_mtt_size(qpc);
struct res_cq *rcq;
struct res_cq *scq;
int rcqn = qp_get_rcqn(qpc);
int scqn = qp_get_scqn(qpc);
u32 srqn = qp_get_srqn(qpc) & 0xffffff;
int use_srq = (qp_get_srqn(qpc) >> 24) & 1;
struct res_srq *srq;
int local_qpn = be32_to_cpu(qpc->local_qpn) & 0xffffff;
err = qp_res_start_move_to(dev, slave, qpn, RES_QP_HW, &qp, 0);
if (err)
return err;
qp->local_qpn = local_qpn;
err = get_res(dev, slave, mtt_base / dev->caps.mtts_per_seg, RES_MTT,
&mtt);
if (err)
goto ex_abort;
err = check_mtt_range(dev, slave, mtt_base, mtt_size, mtt);
if (err)
goto ex_put_mtt;
if (pdn2slave(qp_get_pdn(qpc)) != slave) {
err = -EPERM;
goto ex_put_mtt;
}
err = get_res(dev, slave, rcqn, RES_CQ, &rcq);
if (err)
goto ex_put_mtt;
if (scqn != rcqn) {
err = get_res(dev, slave, scqn, RES_CQ, &scq);
if (err)
goto ex_put_rcq;
} else
scq = rcq;
if (use_srq) {
err = get_res(dev, slave, srqn, RES_SRQ, &srq);
if (err)
goto ex_put_scq;
}
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto ex_put_srq;
atomic_inc(&mtt->ref_count);
qp->mtt = mtt;
atomic_inc(&rcq->ref_count);
qp->rcq = rcq;
atomic_inc(&scq->ref_count);
qp->scq = scq;
if (scqn != rcqn)
put_res(dev, slave, scqn, RES_CQ);
if (use_srq) {
atomic_inc(&srq->ref_count);
put_res(dev, slave, srqn, RES_SRQ);
qp->srq = srq;
}
put_res(dev, slave, rcqn, RES_CQ);
put_res(dev, slave, mtt_base / dev->caps.mtts_per_seg, RES_MTT);
res_end_move(dev, slave, RES_QP, qpn);
return 0;
ex_put_srq:
if (use_srq)
put_res(dev, slave, srqn, RES_SRQ);
ex_put_scq:
if (scqn != rcqn)
put_res(dev, slave, scqn, RES_CQ);
ex_put_rcq:
put_res(dev, slave, rcqn, RES_CQ);
ex_put_mtt:
put_res(dev, slave, mtt_base / dev->caps.mtts_per_seg, RES_MTT);
ex_abort:
res_abort_move(dev, slave, RES_QP, qpn);
return err;
}
static int eq_get_mtt_seg(struct mlx4_eq_context *eqc)
{
return be32_to_cpu(eqc->mtt_base_addr_l) & 0xfffffff8;
}
static int eq_get_mtt_size(struct mlx4_eq_context *eqc)
{
int log_eq_size = eqc->log_eq_size & 0x1f;
int page_shift = (eqc->log_page_size & 0x3f) + 12;
if (log_eq_size + 5 < page_shift)
return 1;
return 1 << (log_eq_size + 5 - page_shift);
}
static int cq_get_mtt_seg(struct mlx4_cq_context *cqc)
{
return be32_to_cpu(cqc->mtt_base_addr_l) & 0xfffffff8;
}
static int cq_get_mtt_size(struct mlx4_cq_context *cqc)
{
int log_cq_size = (be32_to_cpu(cqc->logsize_usrpage) >> 24) & 0x1f;
int page_shift = (cqc->log_page_size & 0x3f) + 12;
if (log_cq_size + 5 < page_shift)
return 1;
return 1 << (log_cq_size + 5 - page_shift);
}
int mlx4_SW2HW_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)
{
int err;
int eqn = vhcr->in_modifier;
int res_id = (slave << 8) | eqn;
struct mlx4_eq_context *eqc = inbox->buf;
int mtt_base = (eq_get_mtt_seg(eqc) / dev->caps.mtt_entry_sz) *
dev->caps.mtts_per_seg;
int mtt_size = eq_get_mtt_size(eqc);
struct res_eq *eq;
struct res_mtt *mtt;
err = add_res_range(dev, slave, res_id, 1, RES_EQ, 0);
if (err)
return err;
err = eq_res_start_move_to(dev, slave, res_id, RES_EQ_HW, &eq);
if (err)
goto out_add;
err = get_res(dev, slave, mtt_base / dev->caps.mtts_per_seg, RES_MTT,
&mtt);
if (err)
goto out_move;
err = check_mtt_range(dev, slave, mtt_base, mtt_size, mtt);
if (err)
goto out_put;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto out_put;
atomic_inc(&mtt->ref_count);
eq->mtt = mtt;
put_res(dev, slave, mtt->com.res_id, RES_MTT);
res_end_move(dev, slave, RES_EQ, res_id);
return 0;
out_put:
put_res(dev, slave, mtt->com.res_id, RES_MTT);
out_move:
res_abort_move(dev, slave, RES_EQ, res_id);
out_add:
rem_res_range(dev, slave, res_id, 1, RES_EQ, 0);
return err;
}
static int get_containing_mtt(struct mlx4_dev *dev, int slave, int start,
int len, struct res_mtt **res)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct res_mtt *mtt;
int err = -EINVAL;
spin_lock_irq(mlx4_tlock(dev));
list_for_each_entry(mtt, &tracker->slave_list[slave].res_list[RES_MTT],
com.list) {
if (!check_mtt_range(dev, slave, start, len, mtt)) {
*res = mtt;
mtt->com.from_state = mtt->com.state;
mtt->com.state = RES_MTT_BUSY;
err = 0;
break;
}
}
spin_unlock_irq(mlx4_tlock(dev));
return err;
}
int mlx4_WRITE_MTT_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_mtt mtt;
__be64 *page_list = inbox->buf;
u64 *pg_list = (u64 *)page_list;
int i;
struct res_mtt *rmtt = NULL;
int start = be64_to_cpu(page_list[0]);
int npages = vhcr->in_modifier;
int err;
err = get_containing_mtt(dev, slave, start, npages, &rmtt);
if (err)
return err;
/* Call the SW implementation of write_mtt:
* - Prepare a dummy mtt struct
* - Translate inbox contents to simple addresses in host endianess */
mtt.first_seg = 0;
mtt.order = 0;
mtt.page_shift = 0;
for (i = 0; i < npages; ++i)
pg_list[i + 2] = (be64_to_cpu(page_list[i + 2]) & ~1ULL);
err = __mlx4_write_mtt(dev, &mtt, be64_to_cpu(page_list[0]), npages,
((u64 *)page_list + 2));
if (rmtt)
put_res(dev, slave, rmtt->com.res_id, RES_MTT);
return err;
}
int mlx4_HW2SW_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)
{
int eqn = vhcr->in_modifier;
int res_id = eqn | (slave << 8);
struct res_eq *eq;
int err;
err = eq_res_start_move_to(dev, slave, res_id, RES_EQ_RESERVED, &eq);
if (err)
return err;
err = get_res(dev, slave, eq->mtt->com.res_id, RES_MTT, NULL);
if (err)
goto ex_abort;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto ex_put;
atomic_dec(&eq->mtt->ref_count);
put_res(dev, slave, eq->mtt->com.res_id, RES_MTT);
res_end_move(dev, slave, RES_EQ, res_id);
rem_res_range(dev, slave, res_id, 1, RES_EQ, 0);
return 0;
ex_put:
put_res(dev, slave, eq->mtt->com.res_id, RES_MTT);
ex_abort:
res_abort_move(dev, slave, RES_EQ, res_id);
return err;
}
int mlx4_GEN_EQE(struct mlx4_dev *dev, int slave, struct mlx4_eqe *eqe)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_slave_event_eq_info *event_eq;
struct mlx4_cmd_mailbox *mailbox;
u32 in_modifier = 0;
int err;
int res_id;
struct res_eq *req;
if (!priv->mfunc.master.slave_state)
return -EINVAL;
event_eq = &priv->mfunc.master.slave_state[slave].event_eq;
/* Create the event only if the slave is registered */
if ((event_eq->event_type & (1 << eqe->type)) == 0)
return 0;
mutex_lock(&priv->mfunc.master.gen_eqe_mutex[slave]);
res_id = (slave << 8) | event_eq->eqn;
err = get_res(dev, slave, res_id, RES_EQ, &req);
if (err)
goto unlock;
if (req->com.from_state != RES_EQ_HW) {
err = -EINVAL;
goto put;
}
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox)) {
err = PTR_ERR(mailbox);
goto put;
}
if (eqe->type == MLX4_EVENT_TYPE_CMD) {
++event_eq->token;
eqe->event.cmd.token = cpu_to_be16(event_eq->token);
}
memcpy(mailbox->buf, (u8 *) eqe, 28);
in_modifier = (slave & 0xff) | ((event_eq->eqn & 0xff) << 16);
err = mlx4_cmd(dev, mailbox->dma, in_modifier, 0,
MLX4_CMD_GEN_EQE, MLX4_CMD_TIME_CLASS_B,
MLX4_CMD_NATIVE);
put_res(dev, slave, res_id, RES_EQ);
mutex_unlock(&priv->mfunc.master.gen_eqe_mutex[slave]);
mlx4_free_cmd_mailbox(dev, mailbox);
return err;
put:
put_res(dev, slave, res_id, RES_EQ);
unlock:
mutex_unlock(&priv->mfunc.master.gen_eqe_mutex[slave]);
return err;
}
int mlx4_QUERY_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)
{
int eqn = vhcr->in_modifier;
int res_id = eqn | (slave << 8);
struct res_eq *eq;
int err;
err = get_res(dev, slave, res_id, RES_EQ, &eq);
if (err)
return err;
if (eq->com.from_state != RES_EQ_HW) {
err = -EINVAL;
goto ex_put;
}
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
ex_put:
put_res(dev, slave, res_id, RES_EQ);
return err;
}
int mlx4_SW2HW_CQ_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)
{
int err;
int cqn = vhcr->in_modifier;
struct mlx4_cq_context *cqc = inbox->buf;
int mtt_base = (cq_get_mtt_seg(cqc) / dev->caps.mtt_entry_sz) *
dev->caps.mtts_per_seg;
struct res_cq *cq;
struct res_mtt *mtt;
err = cq_res_start_move_to(dev, slave, cqn, RES_CQ_HW, &cq);
if (err)
return err;
err = get_res(dev, slave, mtt_base / dev->caps.mtts_per_seg, RES_MTT,
&mtt);
if (err)
goto out_move;
err = check_mtt_range(dev, slave, mtt_base, cq_get_mtt_size(cqc), mtt);
if (err)
goto out_put;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto out_put;
atomic_inc(&mtt->ref_count);
cq->mtt = mtt;
put_res(dev, slave, mtt->com.res_id, RES_MTT);
res_end_move(dev, slave, RES_CQ, cqn);
return 0;
out_put:
put_res(dev, slave, mtt->com.res_id, RES_MTT);
out_move:
res_abort_move(dev, slave, RES_CQ, cqn);
return err;
}
int mlx4_HW2SW_CQ_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)
{
int err;
int cqn = vhcr->in_modifier;
struct res_cq *cq;
err = cq_res_start_move_to(dev, slave, cqn, RES_CQ_ALLOCATED, &cq);
if (err)
return err;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto out_move;
atomic_dec(&cq->mtt->ref_count);
res_end_move(dev, slave, RES_CQ, cqn);
return 0;
out_move:
res_abort_move(dev, slave, RES_CQ, cqn);
return err;
}
int mlx4_QUERY_CQ_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)
{
int cqn = vhcr->in_modifier;
struct res_cq *cq;
int err;
err = get_res(dev, slave, cqn, RES_CQ, &cq);
if (err)
return err;
if (cq->com.from_state != RES_CQ_HW)
goto ex_put;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
ex_put:
put_res(dev, slave, cqn, RES_CQ);
return err;
}
static int handle_resize(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 res_cq *cq)
{
int err;
struct res_mtt *orig_mtt;
struct res_mtt *mtt;
struct mlx4_cq_context *cqc = inbox->buf;
int mtt_base = (cq_get_mtt_seg(cqc) / dev->caps.mtt_entry_sz) *
dev->caps.mtts_per_seg;
err = get_res(dev, slave, cq->mtt->com.res_id, RES_MTT, &orig_mtt);
if (err)
return err;
if (orig_mtt != cq->mtt) {
err = -EINVAL;
goto ex_put;
}
err = get_res(dev, slave, mtt_base / dev->caps.mtts_per_seg, RES_MTT,
&mtt);
if (err)
goto ex_put;
err = check_mtt_range(dev, slave, mtt_base, cq_get_mtt_size(cqc), mtt);
if (err)
goto ex_put1;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto ex_put1;
atomic_dec(&orig_mtt->ref_count);
put_res(dev, slave, orig_mtt->com.res_id, RES_MTT);
atomic_inc(&mtt->ref_count);
cq->mtt = mtt;
put_res(dev, slave, mtt->com.res_id, RES_MTT);
return 0;
ex_put1:
put_res(dev, slave, mtt->com.res_id, RES_MTT);
ex_put:
put_res(dev, slave, orig_mtt->com.res_id, RES_MTT);
return err;
}
int mlx4_MODIFY_CQ_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)
{
int cqn = vhcr->in_modifier;
struct res_cq *cq;
int err;
err = get_res(dev, slave, cqn, RES_CQ, &cq);
if (err)
return err;
if (cq->com.from_state != RES_CQ_HW)
goto ex_put;
if (vhcr->op_modifier == 0) {
err = handle_resize(dev, slave, vhcr, inbox, outbox, cmd, cq);
if (err)
goto ex_put;
}
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
ex_put:
put_res(dev, slave, cqn, RES_CQ);
return err;
}
static int srq_get_pdn(struct mlx4_srq_context *srqc)
{
return be32_to_cpu(srqc->pd) & 0xffffff;
}
static int srq_get_mtt_size(struct mlx4_srq_context *srqc)
{
int log_srq_size = (be32_to_cpu(srqc->state_logsize_srqn) >> 24) & 0xf;
int log_rq_stride = srqc->logstride & 7;
int page_shift = (srqc->log_page_size & 0x3f) + 12;
if (log_srq_size + log_rq_stride + 4 < page_shift)
return 1;
return 1 << (log_srq_size + log_rq_stride + 4 - page_shift);
}
int mlx4_SW2HW_SRQ_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)
{
int err;
int srqn = vhcr->in_modifier;
struct res_mtt *mtt;
struct res_srq *srq;
struct mlx4_srq_context *srqc = inbox->buf;
int mtt_base = (srq_get_mtt_seg(srqc) / dev->caps.mtt_entry_sz) *
dev->caps.mtts_per_seg;
if (srqn != (be32_to_cpu(srqc->state_logsize_srqn) & 0xffffff))
return -EINVAL;
err = srq_res_start_move_to(dev, slave, srqn, RES_SRQ_HW, &srq);
if (err)
return err;
err = get_res(dev, slave, mtt_base / dev->caps.mtts_per_seg,
RES_MTT, &mtt);
if (err)
goto ex_abort;
err = check_mtt_range(dev, slave, mtt_base, srq_get_mtt_size(srqc),
mtt);
if (err)
goto ex_put_mtt;
if (pdn2slave(srq_get_pdn(srqc)) != slave) {
err = -EPERM;
goto ex_put_mtt;
}
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto ex_put_mtt;
atomic_inc(&mtt->ref_count);
srq->mtt = mtt;
put_res(dev, slave, mtt->com.res_id, RES_MTT);
res_end_move(dev, slave, RES_SRQ, srqn);
return 0;
ex_put_mtt:
put_res(dev, slave, mtt->com.res_id, RES_MTT);
ex_abort:
res_abort_move(dev, slave, RES_SRQ, srqn);
return err;
}
int mlx4_HW2SW_SRQ_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)
{
int err;
int srqn = vhcr->in_modifier;
struct res_srq *srq;
err = srq_res_start_move_to(dev, slave, srqn, RES_SRQ_ALLOCATED, &srq);
if (err)
return err;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto ex_abort;
atomic_dec(&srq->mtt->ref_count);
if (srq->cq)
atomic_dec(&srq->cq->ref_count);
res_end_move(dev, slave, RES_SRQ, srqn);
return 0;
ex_abort:
res_abort_move(dev, slave, RES_SRQ, srqn);
return err;
}
int mlx4_QUERY_SRQ_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)
{
int err;
int srqn = vhcr->in_modifier;
struct res_srq *srq;
err = get_res(dev, slave, srqn, RES_SRQ, &srq);
if (err)
return err;
if (srq->com.from_state != RES_SRQ_HW) {
err = -EBUSY;
goto out;
}
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
out:
put_res(dev, slave, srqn, RES_SRQ);
return err;
}
int mlx4_ARM_SRQ_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)
{
int err;
int srqn = vhcr->in_modifier;
struct res_srq *srq;
err = get_res(dev, slave, srqn, RES_SRQ, &srq);
if (err)
return err;
if (srq->com.from_state != RES_SRQ_HW) {
err = -EBUSY;
goto out;
}
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
out:
put_res(dev, slave, srqn, RES_SRQ);
return err;
}
int mlx4_GEN_QP_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)
{
int err;
int qpn = vhcr->in_modifier & 0x7fffff;
struct res_qp *qp;
err = get_res(dev, slave, qpn, RES_QP, &qp);
if (err)
return err;
if (qp->com.from_state != RES_QP_HW) {
err = -EBUSY;
goto out;
}
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
out:
put_res(dev, slave, qpn, RES_QP);
return err;
}
int mlx4_INIT2RTR_QP_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_qp_context *qpc = inbox->buf + 8;
update_ud_gid(dev, qpc, (u8)slave);
return mlx4_GEN_QP_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
}
int mlx4_2RST_QP_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)
{
int err;
int qpn = vhcr->in_modifier & 0x7fffff;
struct res_qp *qp;
err = qp_res_start_move_to(dev, slave, qpn, RES_QP_MAPPED, &qp, 0);
if (err)
return err;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
if (err)
goto ex_abort;
atomic_dec(&qp->mtt->ref_count);
atomic_dec(&qp->rcq->ref_count);
atomic_dec(&qp->scq->ref_count);
if (qp->srq)
atomic_dec(&qp->srq->ref_count);
res_end_move(dev, slave, RES_QP, qpn);
return 0;
ex_abort:
res_abort_move(dev, slave, RES_QP, qpn);
return err;
}
static struct res_gid *find_gid(struct mlx4_dev *dev, int slave,
struct res_qp *rqp, u8 *gid)
{
struct res_gid *res;
list_for_each_entry(res, &rqp->mcg_list, list) {
if (!memcmp(res->gid, gid, 16))
return res;
}
return NULL;
}
static int add_mcg_res(struct mlx4_dev *dev, int slave, struct res_qp *rqp,
u8 *gid, enum mlx4_protocol prot)
{
struct res_gid *res;
int err;
res = kzalloc(sizeof *res, GFP_KERNEL);
if (!res)
return -ENOMEM;
spin_lock_irq(&rqp->mcg_spl);
if (find_gid(dev, slave, rqp, gid)) {
kfree(res);
err = -EEXIST;
} else {
memcpy(res->gid, gid, 16);
res->prot = prot;
list_add_tail(&res->list, &rqp->mcg_list);
err = 0;
}
spin_unlock_irq(&rqp->mcg_spl);
return err;
}
static int rem_mcg_res(struct mlx4_dev *dev, int slave, struct res_qp *rqp,
u8 *gid, enum mlx4_protocol prot)
{
struct res_gid *res;
int err;
spin_lock_irq(&rqp->mcg_spl);
res = find_gid(dev, slave, rqp, gid);
if (!res || res->prot != prot)
err = -EINVAL;
else {
list_del(&res->list);
kfree(res);
err = 0;
}
spin_unlock_irq(&rqp->mcg_spl);
return err;
}
int mlx4_QP_ATTACH_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_qp qp; /* dummy for calling attach/detach */
u8 *gid = inbox->buf;
enum mlx4_protocol prot = (vhcr->in_modifier >> 28) & 0x7;
int err, err1;
int qpn;
struct res_qp *rqp;
int attach = vhcr->op_modifier;
int block_loopback = vhcr->in_modifier >> 31;
u8 steer_type_mask = 2;
enum mlx4_steer_type type = gid[7] & steer_type_mask;
qpn = vhcr->in_modifier & 0xffffff;
err = get_res(dev, slave, qpn, RES_QP, &rqp);
if (err)
return err;
qp.qpn = qpn;
if (attach) {
err = add_mcg_res(dev, slave, rqp, gid, prot);
if (err)
goto ex_put;
err = mlx4_qp_attach_common(dev, &qp, gid,
block_loopback, prot, type);
if (err)
goto ex_rem;
} else {
err = rem_mcg_res(dev, slave, rqp, gid, prot);
if (err)
goto ex_put;
err = mlx4_qp_detach_common(dev, &qp, gid, prot, type);
}
put_res(dev, slave, qpn, RES_QP);
return 0;
ex_rem:
/* ignore error return below, already in error */
err1 = rem_mcg_res(dev, slave, rqp, gid, prot);
ex_put:
put_res(dev, slave, qpn, RES_QP);
return err;
}
enum {
BUSY_MAX_RETRIES = 10
};
int mlx4_QUERY_IF_STAT_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)
{
int err;
int index = vhcr->in_modifier & 0xffff;
err = get_res(dev, slave, index, RES_COUNTER, NULL);
if (err)
return err;
err = mlx4_DMA_wrapper(dev, slave, vhcr, inbox, outbox, cmd);
put_res(dev, slave, index, RES_COUNTER);
return err;
}
static void detach_qp(struct mlx4_dev *dev, int slave, struct res_qp *rqp)
{
struct res_gid *rgid;
struct res_gid *tmp;
int err;
struct mlx4_qp qp; /* dummy for calling attach/detach */
list_for_each_entry_safe(rgid, tmp, &rqp->mcg_list, list) {
qp.qpn = rqp->local_qpn;
err = mlx4_qp_detach_common(dev, &qp, rgid->gid, rgid->prot,
MLX4_MC_STEER);
list_del(&rgid->list);
kfree(rgid);
}
}
static int _move_all_busy(struct mlx4_dev *dev, int slave,
enum mlx4_resource type, int print)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker =
&priv->mfunc.master.res_tracker;
struct list_head *rlist = &tracker->slave_list[slave].res_list[type];
struct res_common *r;
struct res_common *tmp;
int busy;
busy = 0;
spin_lock_irq(mlx4_tlock(dev));
list_for_each_entry_safe(r, tmp, rlist, list) {
if (r->owner == slave) {
if (!r->removing) {
if (r->state == RES_ANY_BUSY) {
if (print)
mlx4_dbg(dev,
"%s id 0x%x is busy\n",
ResourceType(type),
r->res_id);
++busy;
} else {
r->from_state = r->state;
r->state = RES_ANY_BUSY;
r->removing = 1;
}
}
}
}
spin_unlock_irq(mlx4_tlock(dev));
return busy;
}
static int move_all_busy(struct mlx4_dev *dev, int slave,
enum mlx4_resource type)
{
unsigned long begin;
int busy;
begin = jiffies;
do {
busy = _move_all_busy(dev, slave, type, 0);
if (time_after(jiffies, begin + 5 * HZ))
break;
if (busy)
cond_resched();
} while (busy);
if (busy)
busy = _move_all_busy(dev, slave, type, 1);
return busy;
}
static void rem_slave_qps(struct mlx4_dev *dev, int slave)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct list_head *qp_list =
&tracker->slave_list[slave].res_list[RES_QP];
struct res_qp *qp;
struct res_qp *tmp;
int state;
u64 in_param;
int qpn;
int err;
err = move_all_busy(dev, slave, RES_QP);
if (err)
mlx4_warn(dev, "rem_slave_qps: Could not move all qps to busy"
"for slave %d\n", slave);
spin_lock_irq(mlx4_tlock(dev));
list_for_each_entry_safe(qp, tmp, qp_list, com.list) {
spin_unlock_irq(mlx4_tlock(dev));
if (qp->com.owner == slave) {
qpn = qp->com.res_id;
detach_qp(dev, slave, qp);
state = qp->com.from_state;
while (state != 0) {
switch (state) {
case RES_QP_RESERVED:
spin_lock_irq(mlx4_tlock(dev));
radix_tree_delete(&tracker->res_tree[RES_QP],
qp->com.res_id);
list_del(&qp->com.list);
spin_unlock_irq(mlx4_tlock(dev));
kfree(qp);
state = 0;
break;
case RES_QP_MAPPED:
if (!valid_reserved(dev, slave, qpn))
__mlx4_qp_free_icm(dev, qpn);
state = RES_QP_RESERVED;
break;
case RES_QP_HW:
in_param = slave;
err = mlx4_cmd(dev, in_param,
qp->local_qpn, 2,
MLX4_CMD_2RST_QP,
MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
if (err)
mlx4_dbg(dev, "rem_slave_qps: failed"
" to move slave %d qpn %d to"
" reset\n", slave,
qp->local_qpn);
atomic_dec(&qp->rcq->ref_count);
atomic_dec(&qp->scq->ref_count);
atomic_dec(&qp->mtt->ref_count);
if (qp->srq)
atomic_dec(&qp->srq->ref_count);
state = RES_QP_MAPPED;
break;
default:
state = 0;
}
}
}
spin_lock_irq(mlx4_tlock(dev));
}
spin_unlock_irq(mlx4_tlock(dev));
}
static void rem_slave_srqs(struct mlx4_dev *dev, int slave)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct list_head *srq_list =
&tracker->slave_list[slave].res_list[RES_SRQ];
struct res_srq *srq;
struct res_srq *tmp;
int state;
u64 in_param;
LIST_HEAD(tlist);
int srqn;
int err;
err = move_all_busy(dev, slave, RES_SRQ);
if (err)
mlx4_warn(dev, "rem_slave_srqs: Could not move all srqs to "
"busy for slave %d\n", slave);
spin_lock_irq(mlx4_tlock(dev));
list_for_each_entry_safe(srq, tmp, srq_list, com.list) {
spin_unlock_irq(mlx4_tlock(dev));
if (srq->com.owner == slave) {
srqn = srq->com.res_id;
state = srq->com.from_state;
while (state != 0) {
switch (state) {
case RES_SRQ_ALLOCATED:
__mlx4_srq_free_icm(dev, srqn);
spin_lock_irq(mlx4_tlock(dev));
radix_tree_delete(&tracker->res_tree[RES_SRQ],
srqn);
list_del(&srq->com.list);
spin_unlock_irq(mlx4_tlock(dev));
kfree(srq);
state = 0;
break;
case RES_SRQ_HW:
in_param = slave;
err = mlx4_cmd(dev, in_param, srqn, 1,
MLX4_CMD_HW2SW_SRQ,
MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
if (err)
mlx4_dbg(dev, "rem_slave_srqs: failed"
" to move slave %d srq %d to"
" SW ownership\n",
slave, srqn);
atomic_dec(&srq->mtt->ref_count);
if (srq->cq)
atomic_dec(&srq->cq->ref_count);
state = RES_SRQ_ALLOCATED;
break;
default:
state = 0;
}
}
}
spin_lock_irq(mlx4_tlock(dev));
}
spin_unlock_irq(mlx4_tlock(dev));
}
static void rem_slave_cqs(struct mlx4_dev *dev, int slave)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct list_head *cq_list =
&tracker->slave_list[slave].res_list[RES_CQ];
struct res_cq *cq;
struct res_cq *tmp;
int state;
u64 in_param;
LIST_HEAD(tlist);
int cqn;
int err;
err = move_all_busy(dev, slave, RES_CQ);
if (err)
mlx4_warn(dev, "rem_slave_cqs: Could not move all cqs to "
"busy for slave %d\n", slave);
spin_lock_irq(mlx4_tlock(dev));
list_for_each_entry_safe(cq, tmp, cq_list, com.list) {
spin_unlock_irq(mlx4_tlock(dev));
if (cq->com.owner == slave && !atomic_read(&cq->ref_count)) {
cqn = cq->com.res_id;
state = cq->com.from_state;
while (state != 0) {
switch (state) {
case RES_CQ_ALLOCATED:
__mlx4_cq_free_icm(dev, cqn);
spin_lock_irq(mlx4_tlock(dev));
radix_tree_delete(&tracker->res_tree[RES_CQ],
cqn);
list_del(&cq->com.list);
spin_unlock_irq(mlx4_tlock(dev));
kfree(cq);
state = 0;
break;
case RES_CQ_HW:
in_param = slave;
err = mlx4_cmd(dev, in_param, cqn, 1,
MLX4_CMD_HW2SW_CQ,
MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
if (err)
mlx4_dbg(dev, "rem_slave_cqs: failed"
" to move slave %d cq %d to"
" SW ownership\n",
slave, cqn);
atomic_dec(&cq->mtt->ref_count);
state = RES_CQ_ALLOCATED;
break;
default:
state = 0;
}
}
}
spin_lock_irq(mlx4_tlock(dev));
}
spin_unlock_irq(mlx4_tlock(dev));
}
static void rem_slave_mrs(struct mlx4_dev *dev, int slave)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct list_head *mpt_list =
&tracker->slave_list[slave].res_list[RES_MPT];
struct res_mpt *mpt;
struct res_mpt *tmp;
int state;
u64 in_param;
LIST_HEAD(tlist);
int mptn;
int err;
err = move_all_busy(dev, slave, RES_MPT);
if (err)
mlx4_warn(dev, "rem_slave_mrs: Could not move all mpts to "
"busy for slave %d\n", slave);
spin_lock_irq(mlx4_tlock(dev));
list_for_each_entry_safe(mpt, tmp, mpt_list, com.list) {
spin_unlock_irq(mlx4_tlock(dev));
if (mpt->com.owner == slave) {
mptn = mpt->com.res_id;
state = mpt->com.from_state;
while (state != 0) {
switch (state) {
case RES_MPT_RESERVED:
__mlx4_mr_release(dev, mpt->key);
spin_lock_irq(mlx4_tlock(dev));
radix_tree_delete(&tracker->res_tree[RES_MPT],
mptn);
list_del(&mpt->com.list);
spin_unlock_irq(mlx4_tlock(dev));
kfree(mpt);
state = 0;
break;
case RES_MPT_MAPPED:
__mlx4_mr_free_icm(dev, mpt->key);
state = RES_MPT_RESERVED;
break;
case RES_MPT_HW:
in_param = slave;
err = mlx4_cmd(dev, in_param, mptn, 0,
MLX4_CMD_HW2SW_MPT,
MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
if (err)
mlx4_dbg(dev, "rem_slave_mrs: failed"
" to move slave %d mpt %d to"
" SW ownership\n",
slave, mptn);
if (mpt->mtt)
atomic_dec(&mpt->mtt->ref_count);
state = RES_MPT_MAPPED;
break;
default:
state = 0;
}
}
}
spin_lock_irq(mlx4_tlock(dev));
}
spin_unlock_irq(mlx4_tlock(dev));
}
static void rem_slave_mtts(struct mlx4_dev *dev, int slave)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker =
&priv->mfunc.master.res_tracker;
struct list_head *mtt_list =
&tracker->slave_list[slave].res_list[RES_MTT];
struct res_mtt *mtt;
struct res_mtt *tmp;
int state;
LIST_HEAD(tlist);
int base;
int err;
err = move_all_busy(dev, slave, RES_MTT);
if (err)
mlx4_warn(dev, "rem_slave_mtts: Could not move all mtts to "
"busy for slave %d\n", slave);
spin_lock_irq(mlx4_tlock(dev));
list_for_each_entry_safe(mtt, tmp, mtt_list, com.list) {
spin_unlock_irq(mlx4_tlock(dev));
if (mtt->com.owner == slave) {
base = mtt->com.res_id;
state = mtt->com.from_state;
while (state != 0) {
switch (state) {
case RES_MTT_ALLOCATED:
__mlx4_free_mtt_range(dev, base,
mtt->order);
spin_lock_irq(mlx4_tlock(dev));
radix_tree_delete(&tracker->res_tree[RES_MTT],
base);
list_del(&mtt->com.list);
spin_unlock_irq(mlx4_tlock(dev));
kfree(mtt);
state = 0;
break;
default:
state = 0;
}
}
}
spin_lock_irq(mlx4_tlock(dev));
}
spin_unlock_irq(mlx4_tlock(dev));
}
static void rem_slave_eqs(struct mlx4_dev *dev, int slave)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_resource_tracker *tracker = &priv->mfunc.master.res_tracker;
struct list_head *eq_list =
&tracker->slave_list[slave].res_list[RES_EQ];
struct res_eq *eq;
struct res_eq *tmp;
int err;
int state;
LIST_HEAD(tlist);
int eqn;
struct mlx4_cmd_mailbox *mailbox;
err = move_all_busy(dev, slave, RES_EQ);
if (err)
mlx4_warn(dev, "rem_slave_eqs: Could not move all eqs to "
"busy for slave %d\n", slave);
spin_lock_irq(mlx4_tlock(dev));
list_for_each_entry_safe(eq, tmp, eq_list, com.list) {
spin_unlock_irq(mlx4_tlock(dev));
if (eq->com.owner == slave) {
eqn = eq->com.res_id;
state = eq->com.from_state;
while (state != 0) {
switch (state) {
case RES_EQ_RESERVED:
spin_lock_irq(mlx4_tlock(dev));
radix_tree_delete(&tracker->res_tree[RES_EQ],
eqn);
list_del(&eq->com.list);
spin_unlock_irq(mlx4_tlock(dev));
kfree(eq);
state = 0;
break;
case RES_EQ_HW:
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox)) {
cond_resched();
continue;
}
err = mlx4_cmd_box(dev, slave, 0,
eqn & 0xff, 0,
MLX4_CMD_HW2SW_EQ,
MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
mlx4_dbg(dev, "rem_slave_eqs: failed"
" to move slave %d eqs %d to"
" SW ownership\n", slave, eqn);
mlx4_free_cmd_mailbox(dev, mailbox);
if (!err) {
atomic_dec(&eq->mtt->ref_count);
state = RES_EQ_RESERVED;
}
break;
default:
state = 0;
}
}
}
spin_lock_irq(mlx4_tlock(dev));
}
spin_unlock_irq(mlx4_tlock(dev));
}
void mlx4_delete_all_resources_for_slave(struct mlx4_dev *dev, int slave)
{
struct mlx4_priv *priv = mlx4_priv(dev);
mutex_lock(&priv->mfunc.master.res_tracker.slave_list[slave].mutex);
/*VLAN*/
rem_slave_macs(dev, slave);
rem_slave_qps(dev, slave);
rem_slave_srqs(dev, slave);
rem_slave_cqs(dev, slave);
rem_slave_mrs(dev, slave);
rem_slave_eqs(dev, slave);
rem_slave_mtts(dev, slave);
mutex_unlock(&priv->mfunc.master.res_tracker.slave_list[slave].mutex);
}
