mirror of https://gitee.com/openkylin/linux.git
790 lines
20 KiB
C
790 lines
20 KiB
C
/*
|
|
* Copyright (c) 2013, 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
|
|
* 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/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/errno.h>
|
|
|
|
#include <rdma/ib_user_verbs.h>
|
|
#include <rdma/ib_addr.h>
|
|
|
|
#include "usnic_abi.h"
|
|
#include "usnic_ib.h"
|
|
#include "usnic_common_util.h"
|
|
#include "usnic_ib_qp_grp.h"
|
|
#include "usnic_fwd.h"
|
|
#include "usnic_log.h"
|
|
#include "usnic_uiom.h"
|
|
#include "usnic_transport.h"
|
|
|
|
#define USNIC_DEFAULT_TRANSPORT USNIC_TRANSPORT_ROCE_CUSTOM
|
|
|
|
static void usnic_ib_fw_string_to_u64(char *fw_ver_str, u64 *fw_ver)
|
|
{
|
|
*fw_ver = *((u64 *)fw_ver_str);
|
|
}
|
|
|
|
static int usnic_ib_fill_create_qp_resp(struct usnic_ib_qp_grp *qp_grp,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct usnic_ib_dev *us_ibdev;
|
|
struct usnic_ib_create_qp_resp resp;
|
|
struct pci_dev *pdev;
|
|
struct vnic_dev_bar *bar;
|
|
struct usnic_vnic_res_chunk *chunk;
|
|
struct usnic_ib_qp_grp_flow *default_flow;
|
|
int i, err;
|
|
|
|
memset(&resp, 0, sizeof(resp));
|
|
|
|
us_ibdev = qp_grp->vf->pf;
|
|
pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic);
|
|
if (!pdev) {
|
|
usnic_err("Failed to get pdev of qp_grp %d\n",
|
|
qp_grp->grp_id);
|
|
return -EFAULT;
|
|
}
|
|
|
|
bar = usnic_vnic_get_bar(qp_grp->vf->vnic, 0);
|
|
if (!bar) {
|
|
usnic_err("Failed to get bar0 of qp_grp %d vf %s",
|
|
qp_grp->grp_id, pci_name(pdev));
|
|
return -EFAULT;
|
|
}
|
|
|
|
resp.vfid = usnic_vnic_get_index(qp_grp->vf->vnic);
|
|
resp.bar_bus_addr = bar->bus_addr;
|
|
resp.bar_len = bar->len;
|
|
|
|
chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ);
|
|
if (IS_ERR_OR_NULL(chunk)) {
|
|
usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n",
|
|
usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ),
|
|
qp_grp->grp_id,
|
|
PTR_ERR(chunk));
|
|
return chunk ? PTR_ERR(chunk) : -ENOMEM;
|
|
}
|
|
|
|
WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_RQ);
|
|
resp.rq_cnt = chunk->cnt;
|
|
for (i = 0; i < chunk->cnt; i++)
|
|
resp.rq_idx[i] = chunk->res[i]->vnic_idx;
|
|
|
|
chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_WQ);
|
|
if (IS_ERR_OR_NULL(chunk)) {
|
|
usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n",
|
|
usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_WQ),
|
|
qp_grp->grp_id,
|
|
PTR_ERR(chunk));
|
|
return chunk ? PTR_ERR(chunk) : -ENOMEM;
|
|
}
|
|
|
|
WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_WQ);
|
|
resp.wq_cnt = chunk->cnt;
|
|
for (i = 0; i < chunk->cnt; i++)
|
|
resp.wq_idx[i] = chunk->res[i]->vnic_idx;
|
|
|
|
chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_CQ);
|
|
if (IS_ERR_OR_NULL(chunk)) {
|
|
usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n",
|
|
usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_CQ),
|
|
qp_grp->grp_id,
|
|
PTR_ERR(chunk));
|
|
return chunk ? PTR_ERR(chunk) : -ENOMEM;
|
|
}
|
|
|
|
WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_CQ);
|
|
resp.cq_cnt = chunk->cnt;
|
|
for (i = 0; i < chunk->cnt; i++)
|
|
resp.cq_idx[i] = chunk->res[i]->vnic_idx;
|
|
|
|
default_flow = list_first_entry(&qp_grp->flows_lst,
|
|
struct usnic_ib_qp_grp_flow, link);
|
|
resp.transport = default_flow->trans_type;
|
|
|
|
err = ib_copy_to_udata(udata, &resp, sizeof(resp));
|
|
if (err) {
|
|
usnic_err("Failed to copy udata for %s", us_ibdev->ib_dev.name);
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct usnic_ib_qp_grp*
|
|
find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev,
|
|
struct usnic_ib_pd *pd,
|
|
struct usnic_transport_spec *trans_spec,
|
|
struct usnic_vnic_res_spec *res_spec)
|
|
{
|
|
struct usnic_ib_vf *vf;
|
|
struct usnic_vnic *vnic;
|
|
struct usnic_ib_qp_grp *qp_grp;
|
|
struct device *dev, **dev_list;
|
|
int i, found = 0;
|
|
|
|
BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock));
|
|
|
|
if (list_empty(&us_ibdev->vf_dev_list)) {
|
|
usnic_info("No vfs to allocate\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (usnic_ib_share_vf) {
|
|
/* Try to find resouces on a used vf which is in pd */
|
|
dev_list = usnic_uiom_get_dev_list(pd->umem_pd);
|
|
for (i = 0; dev_list[i]; i++) {
|
|
dev = dev_list[i];
|
|
vf = pci_get_drvdata(to_pci_dev(dev));
|
|
spin_lock(&vf->lock);
|
|
vnic = vf->vnic;
|
|
if (!usnic_vnic_check_room(vnic, res_spec)) {
|
|
usnic_dbg("Found used vnic %s from %s\n",
|
|
us_ibdev->ib_dev.name,
|
|
pci_name(usnic_vnic_get_pdev(
|
|
vnic)));
|
|
found = 1;
|
|
break;
|
|
}
|
|
spin_unlock(&vf->lock);
|
|
|
|
}
|
|
usnic_uiom_free_dev_list(dev_list);
|
|
}
|
|
|
|
if (!found) {
|
|
/* Try to find resources on an unused vf */
|
|
list_for_each_entry(vf, &us_ibdev->vf_dev_list, link) {
|
|
spin_lock(&vf->lock);
|
|
vnic = vf->vnic;
|
|
if (vf->qp_grp_ref_cnt == 0 &&
|
|
usnic_vnic_check_room(vnic, res_spec) == 0) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
spin_unlock(&vf->lock);
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
usnic_info("No free qp grp found on %s\n",
|
|
us_ibdev->ib_dev.name);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, vf, pd, res_spec,
|
|
trans_spec);
|
|
spin_unlock(&vf->lock);
|
|
if (IS_ERR_OR_NULL(qp_grp)) {
|
|
usnic_err("Failed to allocate qp_grp\n");
|
|
return ERR_PTR(qp_grp ? PTR_ERR(qp_grp) : -ENOMEM);
|
|
}
|
|
|
|
return qp_grp;
|
|
}
|
|
|
|
static void qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp)
|
|
{
|
|
struct usnic_ib_vf *vf = qp_grp->vf;
|
|
|
|
WARN_ON(qp_grp->state != IB_QPS_RESET);
|
|
|
|
spin_lock(&vf->lock);
|
|
usnic_ib_qp_grp_destroy(qp_grp);
|
|
spin_unlock(&vf->lock);
|
|
}
|
|
|
|
static void eth_speed_to_ib_speed(int speed, u8 *active_speed,
|
|
u8 *active_width)
|
|
{
|
|
if (speed <= 10000) {
|
|
*active_width = IB_WIDTH_1X;
|
|
*active_speed = IB_SPEED_FDR10;
|
|
} else if (speed <= 20000) {
|
|
*active_width = IB_WIDTH_4X;
|
|
*active_speed = IB_SPEED_DDR;
|
|
} else if (speed <= 30000) {
|
|
*active_width = IB_WIDTH_4X;
|
|
*active_speed = IB_SPEED_QDR;
|
|
} else if (speed <= 40000) {
|
|
*active_width = IB_WIDTH_4X;
|
|
*active_speed = IB_SPEED_FDR10;
|
|
} else {
|
|
*active_width = IB_WIDTH_4X;
|
|
*active_speed = IB_SPEED_EDR;
|
|
}
|
|
}
|
|
|
|
static int create_qp_validate_user_data(struct usnic_ib_create_qp_cmd cmd)
|
|
{
|
|
if (cmd.spec.trans_type <= USNIC_TRANSPORT_UNKNOWN ||
|
|
cmd.spec.trans_type >= USNIC_TRANSPORT_MAX)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Start of ib callback functions */
|
|
|
|
enum rdma_link_layer usnic_ib_port_link_layer(struct ib_device *device,
|
|
u8 port_num)
|
|
{
|
|
return IB_LINK_LAYER_ETHERNET;
|
|
}
|
|
|
|
int usnic_ib_query_device(struct ib_device *ibdev,
|
|
struct ib_device_attr *props,
|
|
struct ib_udata *uhw)
|
|
{
|
|
struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
|
|
union ib_gid gid;
|
|
struct ethtool_drvinfo info;
|
|
int qp_per_vf;
|
|
|
|
usnic_dbg("\n");
|
|
if (uhw->inlen || uhw->outlen)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&us_ibdev->usdev_lock);
|
|
us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
|
|
memset(props, 0, sizeof(*props));
|
|
usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr,
|
|
&gid.raw[0]);
|
|
memcpy(&props->sys_image_guid, &gid.global.interface_id,
|
|
sizeof(gid.global.interface_id));
|
|
usnic_ib_fw_string_to_u64(&info.fw_version[0], &props->fw_ver);
|
|
props->max_mr_size = USNIC_UIOM_MAX_MR_SIZE;
|
|
props->page_size_cap = USNIC_UIOM_PAGE_SIZE;
|
|
props->vendor_id = PCI_VENDOR_ID_CISCO;
|
|
props->vendor_part_id = PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC;
|
|
props->hw_ver = us_ibdev->pdev->subsystem_device;
|
|
qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ],
|
|
us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]);
|
|
props->max_qp = qp_per_vf *
|
|
atomic_read(&us_ibdev->vf_cnt.refcount);
|
|
props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT |
|
|
IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
|
|
props->max_cq = us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ] *
|
|
atomic_read(&us_ibdev->vf_cnt.refcount);
|
|
props->max_pd = USNIC_UIOM_MAX_PD_CNT;
|
|
props->max_mr = USNIC_UIOM_MAX_MR_CNT;
|
|
props->local_ca_ack_delay = 0;
|
|
props->max_pkeys = 0;
|
|
props->atomic_cap = IB_ATOMIC_NONE;
|
|
props->masked_atomic_cap = props->atomic_cap;
|
|
props->max_qp_rd_atom = 0;
|
|
props->max_qp_init_rd_atom = 0;
|
|
props->max_res_rd_atom = 0;
|
|
props->max_srq = 0;
|
|
props->max_srq_wr = 0;
|
|
props->max_srq_sge = 0;
|
|
props->max_fast_reg_page_list_len = 0;
|
|
props->max_mcast_grp = 0;
|
|
props->max_mcast_qp_attach = 0;
|
|
props->max_total_mcast_qp_attach = 0;
|
|
props->max_map_per_fmr = 0;
|
|
/* Owned by Userspace
|
|
* max_qp_wr, max_sge, max_sge_rd, max_cqe */
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usnic_ib_query_port(struct ib_device *ibdev, u8 port,
|
|
struct ib_port_attr *props)
|
|
{
|
|
struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
|
|
struct ethtool_link_ksettings cmd;
|
|
|
|
usnic_dbg("\n");
|
|
|
|
mutex_lock(&us_ibdev->usdev_lock);
|
|
__ethtool_get_link_ksettings(us_ibdev->netdev, &cmd);
|
|
memset(props, 0, sizeof(*props));
|
|
|
|
props->lid = 0;
|
|
props->lmc = 1;
|
|
props->sm_lid = 0;
|
|
props->sm_sl = 0;
|
|
|
|
if (!us_ibdev->ufdev->link_up) {
|
|
props->state = IB_PORT_DOWN;
|
|
props->phys_state = 3;
|
|
} else if (!us_ibdev->ufdev->inaddr) {
|
|
props->state = IB_PORT_INIT;
|
|
props->phys_state = 4;
|
|
} else {
|
|
props->state = IB_PORT_ACTIVE;
|
|
props->phys_state = 5;
|
|
}
|
|
|
|
props->port_cap_flags = 0;
|
|
props->gid_tbl_len = 1;
|
|
props->pkey_tbl_len = 1;
|
|
props->bad_pkey_cntr = 0;
|
|
props->qkey_viol_cntr = 0;
|
|
eth_speed_to_ib_speed(cmd.base.speed, &props->active_speed,
|
|
&props->active_width);
|
|
props->max_mtu = IB_MTU_4096;
|
|
props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu);
|
|
/* Userspace will adjust for hdrs */
|
|
props->max_msg_sz = us_ibdev->ufdev->mtu;
|
|
props->max_vl_num = 1;
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
|
|
int qp_attr_mask,
|
|
struct ib_qp_init_attr *qp_init_attr)
|
|
{
|
|
struct usnic_ib_qp_grp *qp_grp;
|
|
struct usnic_ib_vf *vf;
|
|
int err;
|
|
|
|
usnic_dbg("\n");
|
|
|
|
memset(qp_attr, 0, sizeof(*qp_attr));
|
|
memset(qp_init_attr, 0, sizeof(*qp_init_attr));
|
|
|
|
qp_grp = to_uqp_grp(qp);
|
|
vf = qp_grp->vf;
|
|
mutex_lock(&vf->pf->usdev_lock);
|
|
usnic_dbg("\n");
|
|
qp_attr->qp_state = qp_grp->state;
|
|
qp_attr->cur_qp_state = qp_grp->state;
|
|
|
|
switch (qp_grp->ibqp.qp_type) {
|
|
case IB_QPT_UD:
|
|
qp_attr->qkey = 0;
|
|
break;
|
|
default:
|
|
usnic_err("Unexpected qp_type %d\n", qp_grp->ibqp.qp_type);
|
|
err = -EINVAL;
|
|
goto err_out;
|
|
}
|
|
|
|
mutex_unlock(&vf->pf->usdev_lock);
|
|
return 0;
|
|
|
|
err_out:
|
|
mutex_unlock(&vf->pf->usdev_lock);
|
|
return err;
|
|
}
|
|
|
|
int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
|
|
union ib_gid *gid)
|
|
{
|
|
|
|
struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
|
|
usnic_dbg("\n");
|
|
|
|
if (index > 1)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&us_ibdev->usdev_lock);
|
|
memset(&(gid->raw[0]), 0, sizeof(gid->raw));
|
|
usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr,
|
|
&gid->raw[0]);
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
|
|
u16 *pkey)
|
|
{
|
|
if (index > 1)
|
|
return -EINVAL;
|
|
|
|
*pkey = 0xffff;
|
|
return 0;
|
|
}
|
|
|
|
struct ib_pd *usnic_ib_alloc_pd(struct ib_device *ibdev,
|
|
struct ib_ucontext *context,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct usnic_ib_pd *pd;
|
|
void *umem_pd;
|
|
|
|
usnic_dbg("\n");
|
|
|
|
pd = kzalloc(sizeof(*pd), GFP_KERNEL);
|
|
if (!pd)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
umem_pd = pd->umem_pd = usnic_uiom_alloc_pd();
|
|
if (IS_ERR_OR_NULL(umem_pd)) {
|
|
kfree(pd);
|
|
return ERR_PTR(umem_pd ? PTR_ERR(umem_pd) : -ENOMEM);
|
|
}
|
|
|
|
usnic_info("domain 0x%p allocated for context 0x%p and device %s\n",
|
|
pd, context, ibdev->name);
|
|
return &pd->ibpd;
|
|
}
|
|
|
|
int usnic_ib_dealloc_pd(struct ib_pd *pd)
|
|
{
|
|
usnic_info("freeing domain 0x%p\n", pd);
|
|
|
|
usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd);
|
|
kfree(pd);
|
|
return 0;
|
|
}
|
|
|
|
struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd,
|
|
struct ib_qp_init_attr *init_attr,
|
|
struct ib_udata *udata)
|
|
{
|
|
int err;
|
|
struct usnic_ib_dev *us_ibdev;
|
|
struct usnic_ib_qp_grp *qp_grp;
|
|
struct usnic_ib_ucontext *ucontext;
|
|
int cq_cnt;
|
|
struct usnic_vnic_res_spec res_spec;
|
|
struct usnic_ib_create_qp_cmd cmd;
|
|
struct usnic_transport_spec trans_spec;
|
|
|
|
usnic_dbg("\n");
|
|
|
|
ucontext = to_uucontext(pd->uobject->context);
|
|
us_ibdev = to_usdev(pd->device);
|
|
|
|
if (init_attr->create_flags)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
err = ib_copy_from_udata(&cmd, udata, sizeof(cmd));
|
|
if (err) {
|
|
usnic_err("%s: cannot copy udata for create_qp\n",
|
|
us_ibdev->ib_dev.name);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
err = create_qp_validate_user_data(cmd);
|
|
if (err) {
|
|
usnic_err("%s: Failed to validate user data\n",
|
|
us_ibdev->ib_dev.name);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
if (init_attr->qp_type != IB_QPT_UD) {
|
|
usnic_err("%s asked to make a non-UD QP: %d\n",
|
|
us_ibdev->ib_dev.name, init_attr->qp_type);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
trans_spec = cmd.spec;
|
|
mutex_lock(&us_ibdev->usdev_lock);
|
|
cq_cnt = (init_attr->send_cq == init_attr->recv_cq) ? 1 : 2;
|
|
res_spec = min_transport_spec[trans_spec.trans_type];
|
|
usnic_vnic_res_spec_update(&res_spec, USNIC_VNIC_RES_TYPE_CQ, cq_cnt);
|
|
qp_grp = find_free_vf_and_create_qp_grp(us_ibdev, to_upd(pd),
|
|
&trans_spec,
|
|
&res_spec);
|
|
if (IS_ERR_OR_NULL(qp_grp)) {
|
|
err = qp_grp ? PTR_ERR(qp_grp) : -ENOMEM;
|
|
goto out_release_mutex;
|
|
}
|
|
|
|
err = usnic_ib_fill_create_qp_resp(qp_grp, udata);
|
|
if (err) {
|
|
err = -EBUSY;
|
|
goto out_release_qp_grp;
|
|
}
|
|
|
|
qp_grp->ctx = ucontext;
|
|
list_add_tail(&qp_grp->link, &ucontext->qp_grp_list);
|
|
usnic_ib_log_vf(qp_grp->vf);
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
return &qp_grp->ibqp;
|
|
|
|
out_release_qp_grp:
|
|
qp_grp_destroy(qp_grp);
|
|
out_release_mutex:
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
int usnic_ib_destroy_qp(struct ib_qp *qp)
|
|
{
|
|
struct usnic_ib_qp_grp *qp_grp;
|
|
struct usnic_ib_vf *vf;
|
|
|
|
usnic_dbg("\n");
|
|
|
|
qp_grp = to_uqp_grp(qp);
|
|
vf = qp_grp->vf;
|
|
mutex_lock(&vf->pf->usdev_lock);
|
|
if (usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RESET, NULL)) {
|
|
usnic_err("Failed to move qp grp %u to reset\n",
|
|
qp_grp->grp_id);
|
|
}
|
|
|
|
list_del(&qp_grp->link);
|
|
qp_grp_destroy(qp_grp);
|
|
mutex_unlock(&vf->pf->usdev_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usnic_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
|
|
int attr_mask, struct ib_udata *udata)
|
|
{
|
|
struct usnic_ib_qp_grp *qp_grp;
|
|
int status;
|
|
usnic_dbg("\n");
|
|
|
|
qp_grp = to_uqp_grp(ibqp);
|
|
|
|
mutex_lock(&qp_grp->vf->pf->usdev_lock);
|
|
if ((attr_mask & IB_QP_PORT) && attr->port_num != 1) {
|
|
/* usnic devices only have one port */
|
|
status = -EINVAL;
|
|
goto out_unlock;
|
|
}
|
|
if (attr_mask & IB_QP_STATE) {
|
|
status = usnic_ib_qp_grp_modify(qp_grp, attr->qp_state, NULL);
|
|
} else {
|
|
usnic_err("Unhandled request, attr_mask=0x%x\n", attr_mask);
|
|
status = -EINVAL;
|
|
}
|
|
|
|
out_unlock:
|
|
mutex_unlock(&qp_grp->vf->pf->usdev_lock);
|
|
return status;
|
|
}
|
|
|
|
struct ib_cq *usnic_ib_create_cq(struct ib_device *ibdev,
|
|
const struct ib_cq_init_attr *attr,
|
|
struct ib_ucontext *context,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct ib_cq *cq;
|
|
|
|
usnic_dbg("\n");
|
|
if (attr->flags)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
cq = kzalloc(sizeof(*cq), GFP_KERNEL);
|
|
if (!cq)
|
|
return ERR_PTR(-EBUSY);
|
|
|
|
return cq;
|
|
}
|
|
|
|
int usnic_ib_destroy_cq(struct ib_cq *cq)
|
|
{
|
|
usnic_dbg("\n");
|
|
kfree(cq);
|
|
return 0;
|
|
}
|
|
|
|
struct ib_mr *usnic_ib_reg_mr(struct ib_pd *pd, u64 start, u64 length,
|
|
u64 virt_addr, int access_flags,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct usnic_ib_mr *mr;
|
|
int err;
|
|
|
|
usnic_dbg("start 0x%llx va 0x%llx length 0x%llx\n", start,
|
|
virt_addr, length);
|
|
|
|
mr = kzalloc(sizeof(*mr), GFP_KERNEL);
|
|
if (!mr)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
mr->umem = usnic_uiom_reg_get(to_upd(pd)->umem_pd, start, length,
|
|
access_flags, 0);
|
|
if (IS_ERR_OR_NULL(mr->umem)) {
|
|
err = mr->umem ? PTR_ERR(mr->umem) : -EFAULT;
|
|
goto err_free;
|
|
}
|
|
|
|
mr->ibmr.lkey = mr->ibmr.rkey = 0;
|
|
return &mr->ibmr;
|
|
|
|
err_free:
|
|
kfree(mr);
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
int usnic_ib_dereg_mr(struct ib_mr *ibmr)
|
|
{
|
|
struct usnic_ib_mr *mr = to_umr(ibmr);
|
|
|
|
usnic_dbg("va 0x%lx length 0x%zx\n", mr->umem->va, mr->umem->length);
|
|
|
|
usnic_uiom_reg_release(mr->umem, ibmr->pd->uobject->context->closing);
|
|
kfree(mr);
|
|
return 0;
|
|
}
|
|
|
|
struct ib_ucontext *usnic_ib_alloc_ucontext(struct ib_device *ibdev,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct usnic_ib_ucontext *context;
|
|
struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
|
|
usnic_dbg("\n");
|
|
|
|
context = kmalloc(sizeof(*context), GFP_KERNEL);
|
|
if (!context)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
INIT_LIST_HEAD(&context->qp_grp_list);
|
|
mutex_lock(&us_ibdev->usdev_lock);
|
|
list_add_tail(&context->link, &us_ibdev->ctx_list);
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
|
|
return &context->ibucontext;
|
|
}
|
|
|
|
int usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
|
|
{
|
|
struct usnic_ib_ucontext *context = to_uucontext(ibcontext);
|
|
struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device);
|
|
usnic_dbg("\n");
|
|
|
|
mutex_lock(&us_ibdev->usdev_lock);
|
|
BUG_ON(!list_empty(&context->qp_grp_list));
|
|
list_del(&context->link);
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
kfree(context);
|
|
return 0;
|
|
}
|
|
|
|
int usnic_ib_mmap(struct ib_ucontext *context,
|
|
struct vm_area_struct *vma)
|
|
{
|
|
struct usnic_ib_ucontext *uctx = to_ucontext(context);
|
|
struct usnic_ib_dev *us_ibdev;
|
|
struct usnic_ib_qp_grp *qp_grp;
|
|
struct usnic_ib_vf *vf;
|
|
struct vnic_dev_bar *bar;
|
|
dma_addr_t bus_addr;
|
|
unsigned int len;
|
|
unsigned int vfid;
|
|
|
|
usnic_dbg("\n");
|
|
|
|
us_ibdev = to_usdev(context->device);
|
|
vma->vm_flags |= VM_IO;
|
|
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
|
|
vfid = vma->vm_pgoff;
|
|
usnic_dbg("Page Offset %lu PAGE_SHIFT %u VFID %u\n",
|
|
vma->vm_pgoff, PAGE_SHIFT, vfid);
|
|
|
|
mutex_lock(&us_ibdev->usdev_lock);
|
|
list_for_each_entry(qp_grp, &uctx->qp_grp_list, link) {
|
|
vf = qp_grp->vf;
|
|
if (usnic_vnic_get_index(vf->vnic) == vfid) {
|
|
bar = usnic_vnic_get_bar(vf->vnic, 0);
|
|
if ((vma->vm_end - vma->vm_start) != bar->len) {
|
|
usnic_err("Bar0 Len %lu - Request map %lu\n",
|
|
bar->len,
|
|
vma->vm_end - vma->vm_start);
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
return -EINVAL;
|
|
}
|
|
bus_addr = bar->bus_addr;
|
|
len = bar->len;
|
|
usnic_dbg("bus: %pa vaddr: %p size: %ld\n",
|
|
&bus_addr, bar->vaddr, bar->len);
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
|
|
return remap_pfn_range(vma,
|
|
vma->vm_start,
|
|
bus_addr >> PAGE_SHIFT,
|
|
len, vma->vm_page_prot);
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&us_ibdev->usdev_lock);
|
|
usnic_err("No VF %u found\n", vfid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* In ib callbacks section - Start of stub funcs */
|
|
struct ib_ah *usnic_ib_create_ah(struct ib_pd *pd,
|
|
struct ib_ah_attr *ah_attr)
|
|
{
|
|
usnic_dbg("\n");
|
|
return ERR_PTR(-EPERM);
|
|
}
|
|
|
|
int usnic_ib_destroy_ah(struct ib_ah *ah)
|
|
{
|
|
usnic_dbg("\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
int usnic_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
|
|
struct ib_send_wr **bad_wr)
|
|
{
|
|
usnic_dbg("\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
int usnic_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
|
|
struct ib_recv_wr **bad_wr)
|
|
{
|
|
usnic_dbg("\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
int usnic_ib_poll_cq(struct ib_cq *ibcq, int num_entries,
|
|
struct ib_wc *wc)
|
|
{
|
|
usnic_dbg("\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
int usnic_ib_req_notify_cq(struct ib_cq *cq,
|
|
enum ib_cq_notify_flags flags)
|
|
{
|
|
usnic_dbg("\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
struct ib_mr *usnic_ib_get_dma_mr(struct ib_pd *pd, int acc)
|
|
{
|
|
usnic_dbg("\n");
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
|
|
/* In ib callbacks section - End of stub funcs */
|
|
/* End of ib callbacks section */
|