Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-30 14:52:05 +00:00
Code Issues Packages Projects Releases Wiki Activity
168fe32a07
linux/drivers/infiniband/hw/ocrdma/ocrdma_main.c
Leon Romanovsky 9abb0d1bbd RDMA: Simplify get firmware interface 
There is a need to forward FW version to user space
application through RDMA netlink. In order to make it safe, there
is need to declare nla_policy and limit the size of FW string.

The new define IB_FW_VERSION_NAME_MAX will limit the size of
FW version string. That define was chosen to be equal to
ETHTOOL_FWVERS_LEN, because many drivers anyway are limited
by that value indirectly.

The introduction of this define allows us to remove the string size
from get_fw_str function signature.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2017-08-10 13:28:10 +03:00

481 lines
13 KiB
C
Raw Blame History

/* This file is part of the Emulex RoCE Device Driver for
* RoCE (RDMA over Converged Ethernet) adapters.
* Copyright (C) 2012-2015 Emulex. All rights reserved.
* EMULEX and SLI are trademarks of Emulex.
* www.emulex.com
*
* 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 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Contact Information:
* linux-drivers@emulex.com
*
* Emulex
* 3333 Susan Street
* Costa Mesa, CA 92626
*/
#include <linux/module.h>
#include <linux/idr.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_mad.h>
#include <linux/netdevice.h>
#include <net/addrconf.h>
#include "ocrdma.h"
#include "ocrdma_verbs.h"
#include "ocrdma_ah.h"
#include "be_roce.h"
#include "ocrdma_hw.h"
#include "ocrdma_stats.h"
#include <rdma/ocrdma-abi.h>
MODULE_DESCRIPTION(OCRDMA_ROCE_DRV_DESC " " OCRDMA_ROCE_DRV_VERSION);
MODULE_AUTHOR("Emulex Corporation");
MODULE_LICENSE("Dual BSD/GPL");
static DEFINE_IDR(ocrdma_dev_id);
void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid)
{
u8 mac_addr[6];
memcpy(&mac_addr[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
guid[0] = mac_addr[0] ^ 2;
guid[1] = mac_addr[1];
guid[2] = mac_addr[2];
guid[3] = 0xff;
guid[4] = 0xfe;
guid[5] = mac_addr[3];
guid[6] = mac_addr[4];
guid[7] = mac_addr[5];
}
static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device,
u8 port_num)
{
return IB_LINK_LAYER_ETHERNET;
}
static int ocrdma_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable)
{
struct ib_port_attr attr;
struct ocrdma_dev *dev;
int err;
dev = get_ocrdma_dev(ibdev);
immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
if (ocrdma_is_udp_encap_supported(dev))
immutable->core_cap_flags |= RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
err = ib_query_port(ibdev, port_num, &attr);
if (err)
return err;
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}
static void get_dev_fw_str(struct ib_device *device, char *str)
{
struct ocrdma_dev *dev = get_ocrdma_dev(device);
snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", &dev->attr.fw_ver[0]);
}
static int ocrdma_register_device(struct ocrdma_dev *dev)
{
strlcpy(dev->ibdev.name, "ocrdma%d", IB_DEVICE_NAME_MAX);
ocrdma_get_guid(dev, (u8 *)&dev->ibdev.node_guid);
BUILD_BUG_ON(sizeof(OCRDMA_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
memcpy(dev->ibdev.node_desc, OCRDMA_NODE_DESC,
sizeof(OCRDMA_NODE_DESC));
dev->ibdev.owner = THIS_MODULE;
dev->ibdev.uverbs_abi_ver = OCRDMA_ABI_VERSION;
dev->ibdev.uverbs_cmd_mask =
OCRDMA_UVERBS(GET_CONTEXT) |
OCRDMA_UVERBS(QUERY_DEVICE) |
OCRDMA_UVERBS(QUERY_PORT) |
OCRDMA_UVERBS(ALLOC_PD) |
OCRDMA_UVERBS(DEALLOC_PD) |
OCRDMA_UVERBS(REG_MR) |
OCRDMA_UVERBS(DEREG_MR) |
OCRDMA_UVERBS(CREATE_COMP_CHANNEL) |
OCRDMA_UVERBS(CREATE_CQ) |
OCRDMA_UVERBS(RESIZE_CQ) |
OCRDMA_UVERBS(DESTROY_CQ) |
OCRDMA_UVERBS(REQ_NOTIFY_CQ) |
OCRDMA_UVERBS(CREATE_QP) |
OCRDMA_UVERBS(MODIFY_QP) |
OCRDMA_UVERBS(QUERY_QP) |
OCRDMA_UVERBS(DESTROY_QP) |
OCRDMA_UVERBS(POLL_CQ) |
OCRDMA_UVERBS(POST_SEND) |
OCRDMA_UVERBS(POST_RECV);
dev->ibdev.uverbs_cmd_mask |=
OCRDMA_UVERBS(CREATE_AH) |
OCRDMA_UVERBS(MODIFY_AH) |
OCRDMA_UVERBS(QUERY_AH) |
OCRDMA_UVERBS(DESTROY_AH);
dev->ibdev.node_type = RDMA_NODE_IB_CA;
dev->ibdev.phys_port_cnt = 1;
dev->ibdev.num_comp_vectors = dev->eq_cnt;
/* mandatory verbs. */
dev->ibdev.query_device = ocrdma_query_device;
dev->ibdev.query_port = ocrdma_query_port;
dev->ibdev.modify_port = ocrdma_modify_port;
dev->ibdev.query_gid = ocrdma_query_gid;
dev->ibdev.get_netdev = ocrdma_get_netdev;
dev->ibdev.add_gid = ocrdma_add_gid;
dev->ibdev.del_gid = ocrdma_del_gid;
dev->ibdev.get_link_layer = ocrdma_link_layer;
dev->ibdev.alloc_pd = ocrdma_alloc_pd;
dev->ibdev.dealloc_pd = ocrdma_dealloc_pd;
dev->ibdev.create_cq = ocrdma_create_cq;
dev->ibdev.destroy_cq = ocrdma_destroy_cq;
dev->ibdev.resize_cq = ocrdma_resize_cq;
dev->ibdev.create_qp = ocrdma_create_qp;
dev->ibdev.modify_qp = ocrdma_modify_qp;
dev->ibdev.query_qp = ocrdma_query_qp;
dev->ibdev.destroy_qp = ocrdma_destroy_qp;
dev->ibdev.query_pkey = ocrdma_query_pkey;
dev->ibdev.create_ah = ocrdma_create_ah;
dev->ibdev.destroy_ah = ocrdma_destroy_ah;
dev->ibdev.query_ah = ocrdma_query_ah;
dev->ibdev.modify_ah = ocrdma_modify_ah;
dev->ibdev.poll_cq = ocrdma_poll_cq;
dev->ibdev.post_send = ocrdma_post_send;
dev->ibdev.post_recv = ocrdma_post_recv;
dev->ibdev.req_notify_cq = ocrdma_arm_cq;
dev->ibdev.get_dma_mr = ocrdma_get_dma_mr;
dev->ibdev.dereg_mr = ocrdma_dereg_mr;
dev->ibdev.reg_user_mr = ocrdma_reg_user_mr;
dev->ibdev.alloc_mr = ocrdma_alloc_mr;
dev->ibdev.map_mr_sg = ocrdma_map_mr_sg;
/* mandatory to support user space verbs consumer. */
dev->ibdev.alloc_ucontext = ocrdma_alloc_ucontext;
dev->ibdev.dealloc_ucontext = ocrdma_dealloc_ucontext;
dev->ibdev.mmap = ocrdma_mmap;
dev->ibdev.dev.parent = &dev->nic_info.pdev->dev;
dev->ibdev.process_mad = ocrdma_process_mad;
dev->ibdev.get_port_immutable = ocrdma_port_immutable;
dev->ibdev.get_dev_fw_str = get_dev_fw_str;
if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
dev->ibdev.uverbs_cmd_mask |=
OCRDMA_UVERBS(CREATE_SRQ) |
OCRDMA_UVERBS(MODIFY_SRQ) |
OCRDMA_UVERBS(QUERY_SRQ) |
OCRDMA_UVERBS(DESTROY_SRQ) |
OCRDMA_UVERBS(POST_SRQ_RECV);
dev->ibdev.create_srq = ocrdma_create_srq;
dev->ibdev.modify_srq = ocrdma_modify_srq;
dev->ibdev.query_srq = ocrdma_query_srq;
dev->ibdev.destroy_srq = ocrdma_destroy_srq;
dev->ibdev.post_srq_recv = ocrdma_post_srq_recv;
}
return ib_register_device(&dev->ibdev, NULL);
}
static int ocrdma_alloc_resources(struct ocrdma_dev *dev)
{
mutex_init(&dev->dev_lock);
dev->cq_tbl = kzalloc(sizeof(struct ocrdma_cq *) *
OCRDMA_MAX_CQ, GFP_KERNEL);
if (!dev->cq_tbl)
goto alloc_err;
if (dev->attr.max_qp) {
dev->qp_tbl = kzalloc(sizeof(struct ocrdma_qp *) *
OCRDMA_MAX_QP, GFP_KERNEL);
if (!dev->qp_tbl)
goto alloc_err;
}
dev->stag_arr = kzalloc(sizeof(u64) * OCRDMA_MAX_STAG, GFP_KERNEL);
if (dev->stag_arr == NULL)
goto alloc_err;
ocrdma_alloc_pd_pool(dev);
if (!ocrdma_alloc_stats_resources(dev)) {
pr_err("%s: stats resource allocation failed\n", __func__);
goto alloc_err;
}
spin_lock_init(&dev->av_tbl.lock);
spin_lock_init(&dev->flush_q_lock);
return 0;
alloc_err:
pr_err("%s(%d) error.\n", __func__, dev->id);
return -ENOMEM;
}
static void ocrdma_free_resources(struct ocrdma_dev *dev)
{
ocrdma_release_stats_resources(dev);
kfree(dev->stag_arr);
kfree(dev->qp_tbl);
kfree(dev->cq_tbl);
}
/* OCRDMA sysfs interface */
static ssize_t show_rev(struct device *device, struct device_attribute *attr,
char *buf)
{
struct ocrdma_dev *dev = dev_get_drvdata(device);
return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->nic_info.pdev->vendor);
}
static ssize_t show_hca_type(struct device *device,
struct device_attribute *attr, char *buf)
{
struct ocrdma_dev *dev = dev_get_drvdata(device);
return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->model_number[0]);
}
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca_type, NULL);
static struct device_attribute *ocrdma_attributes[] = {
&dev_attr_hw_rev,
&dev_attr_hca_type
};
static void ocrdma_remove_sysfiles(struct ocrdma_dev *dev)
{
int i;
for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++)
device_remove_file(&dev->ibdev.dev, ocrdma_attributes[i]);
}
static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
{
int status = 0, i;
u8 lstate = 0;
struct ocrdma_dev *dev;
dev = (struct ocrdma_dev *)ib_alloc_device(sizeof(struct ocrdma_dev));
if (!dev) {
pr_err("Unable to allocate ib device\n");
return NULL;
}
dev->mbx_cmd = kzalloc(sizeof(struct ocrdma_mqe_emb_cmd), GFP_KERNEL);
if (!dev->mbx_cmd)
goto idr_err;
memcpy(&dev->nic_info, dev_info, sizeof(*dev_info));
dev->id = idr_alloc(&ocrdma_dev_id, NULL, 0, 0, GFP_KERNEL);
if (dev->id < 0)
goto idr_err;
status = ocrdma_init_hw(dev);
if (status)
goto init_err;
status = ocrdma_alloc_resources(dev);
if (status)
goto alloc_err;
ocrdma_init_service_level(dev);
status = ocrdma_register_device(dev);
if (status)
goto alloc_err;
/* Query Link state and update */
status = ocrdma_mbx_get_link_speed(dev, NULL, &lstate);
if (!status)
ocrdma_update_link_state(dev, lstate);
for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++)
if (device_create_file(&dev->ibdev.dev, ocrdma_attributes[i]))
goto sysfs_err;
/* Init stats */
ocrdma_add_port_stats(dev);
/* Interrupt Moderation */
INIT_DELAYED_WORK(&dev->eqd_work, ocrdma_eqd_set_task);
schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000));
pr_info("%s %s: %s \"%s\" port %d\n",
dev_name(&dev->nic_info.pdev->dev), hca_name(dev),
port_speed_string(dev), dev->model_number,
dev->hba_port_num);
pr_info("%s ocrdma%d driver loaded successfully\n",
dev_name(&dev->nic_info.pdev->dev), dev->id);
return dev;
sysfs_err:
ocrdma_remove_sysfiles(dev);
alloc_err:
ocrdma_free_resources(dev);
ocrdma_cleanup_hw(dev);
init_err:
idr_remove(&ocrdma_dev_id, dev->id);
idr_err:
kfree(dev->mbx_cmd);
ib_dealloc_device(&dev->ibdev);
pr_err("%s() leaving. ret=%d\n", __func__, status);
return NULL;
}
static void ocrdma_remove_free(struct ocrdma_dev *dev)
{
idr_remove(&ocrdma_dev_id, dev->id);
kfree(dev->mbx_cmd);
ib_dealloc_device(&dev->ibdev);
}
static void ocrdma_remove(struct ocrdma_dev *dev)
{
/* first unregister with stack to stop all the active traffic
* of the registered clients.
*/
cancel_delayed_work_sync(&dev->eqd_work);
ocrdma_remove_sysfiles(dev);
ib_unregister_device(&dev->ibdev);
ocrdma_rem_port_stats(dev);
ocrdma_free_resources(dev);
ocrdma_cleanup_hw(dev);
ocrdma_remove_free(dev);
}
static int ocrdma_dispatch_port_active(struct ocrdma_dev *dev)
{
struct ib_event port_event;
port_event.event = IB_EVENT_PORT_ACTIVE;
port_event.element.port_num = 1;
port_event.device = &dev->ibdev;
ib_dispatch_event(&port_event);
return 0;
}
static int ocrdma_dispatch_port_error(struct ocrdma_dev *dev)
{
struct ib_event err_event;
err_event.event = IB_EVENT_PORT_ERR;
err_event.element.port_num = 1;
err_event.device = &dev->ibdev;
ib_dispatch_event(&err_event);
return 0;
}
static void ocrdma_shutdown(struct ocrdma_dev *dev)
{
ocrdma_dispatch_port_error(dev);
ocrdma_remove(dev);
}
/* event handling via NIC driver ensures that all the NIC specific
* initialization done before RoCE driver notifies
* event to stack.
*/
static void ocrdma_event_handler(struct ocrdma_dev *dev, u32 event)
{
switch (event) {
case BE_DEV_SHUTDOWN:
ocrdma_shutdown(dev);
break;
default:
break;
}
}
void ocrdma_update_link_state(struct ocrdma_dev *dev, u8 lstate)
{
if (!(dev->flags & OCRDMA_FLAGS_LINK_STATUS_INIT)) {
dev->flags |= OCRDMA_FLAGS_LINK_STATUS_INIT;
if (!lstate)
return;
}
if (!lstate)
ocrdma_dispatch_port_error(dev);
else
ocrdma_dispatch_port_active(dev);
}
static struct ocrdma_driver ocrdma_drv = {
.name = "ocrdma_driver",
.add = ocrdma_add,
.remove = ocrdma_remove,
.state_change_handler = ocrdma_event_handler,
.be_abi_version = OCRDMA_BE_ROCE_ABI_VERSION,
};
static int __init ocrdma_init_module(void)
{
int status;
ocrdma_init_debugfs();
status = be_roce_register_driver(&ocrdma_drv);
if (status)
goto err_be_reg;
return 0;
err_be_reg:
return status;
}
static void __exit ocrdma_exit_module(void)
{
be_roce_unregister_driver(&ocrdma_drv);
ocrdma_rem_debugfs();
idr_destroy(&ocrdma_dev_id);
}
module_init(ocrdma_init_module);
module_exit(ocrdma_exit_module);
Reference in New Issue View Git Blame Copy Permalink