/*
* Copyright (c) 2013-2015, Mellanox Technologies. 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/highmem.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/io-mapping.h>
#include <linux/sched.h>
#include <rdma/ib_user_verbs.h>
#include <linux/mlx5/vport.h>
#include <rdma/ib_smi.h>
#include <rdma/ib_umem.h>
#include <linux/in.h>
#include <linux/etherdevice.h>
#include <linux/mlx5/fs.h>
#include "user.h"
#include "mlx5_ib.h"
#define DRIVER_NAME "mlx5_ib"
#define DRIVER_VERSION "2.2-1"
#define DRIVER_RELDATE "Feb 2014"
MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRIVER_VERSION);
static int deprecated_prof_sel = 2;
module_param_named(prof_sel, deprecated_prof_sel, int, 0444);
MODULE_PARM_DESC(prof_sel, "profile selector. Deprecated here. Moved to module mlx5_core");
static char mlx5_version[] =
DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
DRIVER_VERSION " (" DRIVER_RELDATE ")\n";
static enum rdma_link_layer
mlx5_ib_port_link_layer(struct ib_device *device)
{
struct mlx5_ib_dev *dev = to_mdev(device);
switch (MLX5_CAP_GEN(dev->mdev, port_type)) {
case MLX5_CAP_PORT_TYPE_IB:
return IB_LINK_LAYER_INFINIBAND;
case MLX5_CAP_PORT_TYPE_ETH:
return IB_LINK_LAYER_ETHERNET;
default:
return IB_LINK_LAYER_UNSPECIFIED;
}
}
static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
{
return !dev->mdev->issi;
}
enum {
MLX5_VPORT_ACCESS_METHOD_MAD,
MLX5_VPORT_ACCESS_METHOD_HCA,
MLX5_VPORT_ACCESS_METHOD_NIC,
};
static int mlx5_get_vport_access_method(struct ib_device *ibdev)
{
if (mlx5_use_mad_ifc(to_mdev(ibdev)))
return MLX5_VPORT_ACCESS_METHOD_MAD;
if (mlx5_ib_port_link_layer(ibdev) ==
IB_LINK_LAYER_ETHERNET)
return MLX5_VPORT_ACCESS_METHOD_NIC;
return MLX5_VPORT_ACCESS_METHOD_HCA;
}
static int mlx5_query_system_image_guid(struct ib_device *ibdev,
__be64 *sys_image_guid)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
u64 tmp;
int err;
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_system_image_guid(ibdev,
sys_image_guid);
case MLX5_VPORT_ACCESS_METHOD_HCA:
err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp);
if (!err)
*sys_image_guid = cpu_to_be64(tmp);
return err;
default:
return -EINVAL;
}
}
static int mlx5_query_max_pkeys(struct ib_device *ibdev,
u16 *max_pkeys)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys);
case MLX5_VPORT_ACCESS_METHOD_HCA:
case MLX5_VPORT_ACCESS_METHOD_NIC:
*max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev,
pkey_table_size));
return 0;
default:
return -EINVAL;
}
}
static int mlx5_query_vendor_id(struct ib_device *ibdev,
u32 *vendor_id)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id);
case MLX5_VPORT_ACCESS_METHOD_HCA:
case MLX5_VPORT_ACCESS_METHOD_NIC:
return mlx5_core_query_vendor_id(dev->mdev, vendor_id);
default:
return -EINVAL;
}
}
static int mlx5_query_node_guid(struct mlx5_ib_dev *dev,
__be64 *node_guid)
{
u64 tmp;
int err;
switch (mlx5_get_vport_access_method(&dev->ib_dev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_node_guid(dev, node_guid);
case MLX5_VPORT_ACCESS_METHOD_HCA:
err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp);
if (!err)
*node_guid = cpu_to_be64(tmp);
return err;
default:
return -EINVAL;
}
}
struct mlx5_reg_node_desc {
u8 desc[64];
};
static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
{
struct mlx5_reg_node_desc in;
if (mlx5_use_mad_ifc(dev))
return mlx5_query_mad_ifc_node_desc(dev, node_desc);
memset(&in, 0, sizeof(in));
return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc,
sizeof(struct mlx5_reg_node_desc),
MLX5_REG_NODE_DESC, 0, 0);
}
static int mlx5_ib_query_device(struct ib_device *ibdev,
struct ib_device_attr *props,
struct ib_udata *uhw)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
int err = -ENOMEM;
int max_rq_sg;
int max_sq_sg;
u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
if (uhw->inlen || uhw->outlen)
return -EINVAL;
memset(props, 0, sizeof(*props));
err = mlx5_query_system_image_guid(ibdev,
&props->sys_image_guid);
if (err)
return err;
err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys);
if (err)
return err;
err = mlx5_query_vendor_id(ibdev, &props->vendor_id);
if (err)
return err;
props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) |
(fw_rev_min(dev->mdev) << 16) |
fw_rev_sub(dev->mdev);
props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
IB_DEVICE_PORT_ACTIVE_EVENT |
IB_DEVICE_SYS_IMAGE_GUID |
IB_DEVICE_RC_RNR_NAK_GEN;
if (MLX5_CAP_GEN(mdev, pkv))
props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
if (MLX5_CAP_GEN(mdev, qkv))
props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
if (MLX5_CAP_GEN(mdev, apm))
props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
if (MLX5_CAP_GEN(mdev, xrc))
props->device_cap_flags |= IB_DEVICE_XRC;
props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
if (MLX5_CAP_GEN(mdev, sho)) {
props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER;
/* At this stage no support for signature handover */
props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
IB_PROT_T10DIF_TYPE_2 |
IB_PROT_T10DIF_TYPE_3;
props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
IB_GUARD_T10DIF_CSUM;
}
if (MLX5_CAP_GEN(mdev, block_lb_mc))
props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
props->vendor_part_id = mdev->pdev->device;
props->hw_ver = mdev->pdev->revision;
props->max_mr_size = ~0ull;
props->page_size_cap = ~(min_page_size - 1);
props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp);
props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) /
sizeof(struct mlx5_wqe_data_seg);
max_sq_sg = (MLX5_CAP_GEN(mdev, max_wqe_sz_sq) -
sizeof(struct mlx5_wqe_ctrl_seg)) /
sizeof(struct mlx5_wqe_data_seg);
props->max_sge = min(max_rq_sg, max_sq_sg);
props->max_sge_rd = props->max_sge;
props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq);
props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_eq_sz)) - 1;
props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey);
props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd);
props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp);
props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp);
props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq);
props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1;
props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay);
props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
props->max_srq_sge = max_rq_sg - 1;
props->max_fast_reg_page_list_len = (unsigned int)-1;
props->atomic_cap = IB_ATOMIC_NONE;
props->masked_atomic_cap = IB_ATOMIC_NONE;
props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg);
props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg);
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
props->max_mcast_grp;
props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
if (MLX5_CAP_GEN(mdev, pg))
props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING;
props->odp_caps = dev->odp_caps;
#endif
return 0;
}
enum mlx5_ib_width {
MLX5_IB_WIDTH_1X = 1 << 0,
MLX5_IB_WIDTH_2X = 1 << 1,
MLX5_IB_WIDTH_4X = 1 << 2,
MLX5_IB_WIDTH_8X = 1 << 3,
MLX5_IB_WIDTH_12X = 1 << 4
};
static int translate_active_width(struct ib_device *ibdev, u8 active_width,
u8 *ib_width)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
int err = 0;
if (active_width & MLX5_IB_WIDTH_1X) {
*ib_width = IB_WIDTH_1X;
} else if (active_width & MLX5_IB_WIDTH_2X) {
mlx5_ib_dbg(dev, "active_width %d is not supported by IB spec\n",
(int)active_width);
err = -EINVAL;
} else if (active_width & MLX5_IB_WIDTH_4X) {
*ib_width = IB_WIDTH_4X;
} else if (active_width & MLX5_IB_WIDTH_8X) {
*ib_width = IB_WIDTH_8X;
} else if (active_width & MLX5_IB_WIDTH_12X) {
*ib_width = IB_WIDTH_12X;
} else {
mlx5_ib_dbg(dev, "Invalid active_width %d\n",
(int)active_width);
err = -EINVAL;
}
return err;
}
static int mlx5_mtu_to_ib_mtu(int mtu)
{
switch (mtu) {
case 256: return 1;
case 512: return 2;
case 1024: return 3;
case 2048: return 4;
case 4096: return 5;
default:
pr_warn("invalid mtu\n");
return -1;
}
}
enum ib_max_vl_num {
__IB_MAX_VL_0 = 1,
__IB_MAX_VL_0_1 = 2,
__IB_MAX_VL_0_3 = 3,
__IB_MAX_VL_0_7 = 4,
__IB_MAX_VL_0_14 = 5,
};
enum mlx5_vl_hw_cap {
MLX5_VL_HW_0 = 1,
MLX5_VL_HW_0_1 = 2,
MLX5_VL_HW_0_2 = 3,
MLX5_VL_HW_0_3 = 4,
MLX5_VL_HW_0_4 = 5,
MLX5_VL_HW_0_5 = 6,
MLX5_VL_HW_0_6 = 7,
MLX5_VL_HW_0_7 = 8,
MLX5_VL_HW_0_14 = 15
};
static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap,
u8 *max_vl_num)
{
switch (vl_hw_cap) {
case MLX5_VL_HW_0:
*max_vl_num = __IB_MAX_VL_0;
break;
case MLX5_VL_HW_0_1:
*max_vl_num = __IB_MAX_VL_0_1;
break;
case MLX5_VL_HW_0_3:
*max_vl_num = __IB_MAX_VL_0_3;
break;
case MLX5_VL_HW_0_7:
*max_vl_num = __IB_MAX_VL_0_7;
break;
case MLX5_VL_HW_0_14:
*max_vl_num = __IB_MAX_VL_0_14;
break;
default:
return -EINVAL;
}
return 0;
}
static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
struct mlx5_hca_vport_context *rep;
int max_mtu;
int oper_mtu;
int err;
u8 ib_link_width_oper;
u8 vl_hw_cap;
rep = kzalloc(sizeof(*rep), GFP_KERNEL);
if (!rep) {
err = -ENOMEM;
goto out;
}
memset(props, 0, sizeof(*props));
err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep);
if (err)
goto out;
props->lid = rep->lid;
props->lmc = rep->lmc;
props->sm_lid = rep->sm_lid;
props->sm_sl = rep->sm_sl;
props->state = rep->vport_state;
props->phys_state = rep->port_physical_state;
props->port_cap_flags = rep->cap_mask1;
props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size));
props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size));
props->bad_pkey_cntr = rep->pkey_violation_counter;
props->qkey_viol_cntr = rep->qkey_violation_counter;
props->subnet_timeout = rep->subnet_timeout;
props->init_type_reply = rep->init_type_reply;
err = mlx5_query_port_link_width_oper(mdev, &ib_link_width_oper, port);
if (err)
goto out;
err = translate_active_width(ibdev, ib_link_width_oper,
&props->active_width);
if (err)
goto out;
err = mlx5_query_port_proto_oper(mdev, &props->active_speed, MLX5_PTYS_IB,
port);
if (err)
goto out;
mlx5_query_port_max_mtu(mdev, &max_mtu, port);
props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu);
mlx5_query_port_oper_mtu(mdev, &oper_mtu, port);
props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu);
err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port);
if (err)
goto out;
err = translate_max_vl_num(ibdev, vl_hw_cap,
&props->max_vl_num);
out:
kfree(rep);
return err;
}
int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props)
{
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_port(ibdev, port, props);
case MLX5_VPORT_ACCESS_METHOD_HCA:
return mlx5_query_hca_port(ibdev, port, props);
default:
return -EINVAL;
}
}
static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
union ib_gid *gid)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_gids(ibdev, port, index, gid);
case MLX5_VPORT_ACCESS_METHOD_HCA:
return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid);
default:
return -EINVAL;
}
}
static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
u16 *pkey)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_core_dev *mdev = dev->mdev;
switch (mlx5_get_vport_access_method(ibdev)) {
case MLX5_VPORT_ACCESS_METHOD_MAD:
return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey);
case MLX5_VPORT_ACCESS_METHOD_HCA:
case MLX5_VPORT_ACCESS_METHOD_NIC:
return mlx5_query_hca_vport_pkey(mdev, 0, port, 0, index,
pkey);
default:
return -EINVAL;
}
}
static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
struct ib_device_modify *props)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_reg_node_desc in;
struct mlx5_reg_node_desc out;
int err;
if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
return -EOPNOTSUPP;
if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
return 0;
/*
* If possible, pass node desc to FW, so it can generate
* a 144 trap. If cmd fails, just ignore.
*/
memcpy(&in, props->node_desc, 64);
err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out,
sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
if (err)
return err;
memcpy(ibdev->node_desc, props->node_desc, 64);
return err;
}
static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
struct ib_port_modify *props)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct ib_port_attr attr;
u32 tmp;
int err;
mutex_lock(&dev->cap_mask_mutex);
err = mlx5_ib_query_port(ibdev, port, &attr);
if (err)
goto out;
tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
~props->clr_port_cap_mask;
err = mlx5_set_port_caps(dev->mdev, port, tmp);
out:
mutex_unlock(&dev->cap_mask_mutex);
return err;
}
static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_ib_alloc_ucontext_req_v2 req;
struct mlx5_ib_alloc_ucontext_resp resp;
struct mlx5_ib_ucontext *context;
struct mlx5_uuar_info *uuari;
struct mlx5_uar *uars;
int gross_uuars;
int num_uars;
int ver;
int uuarn;
int err;
int i;
size_t reqlen;
if (!dev->ib_active)
return ERR_PTR(-EAGAIN);
memset(&req, 0, sizeof(req));
reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr);
if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
ver = 0;
else if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req_v2))
ver = 2;
else
return ERR_PTR(-EINVAL);
err = ib_copy_from_udata(&req, udata, reqlen);
if (err)
return ERR_PTR(err);
if (req.flags || req.reserved)
return ERR_PTR(-EINVAL);
if (req.total_num_uuars > MLX5_MAX_UUARS)
return ERR_PTR(-ENOMEM);
if (req.total_num_uuars == 0)
return ERR_PTR(-EINVAL);
req.total_num_uuars = ALIGN(req.total_num_uuars,
MLX5_NON_FP_BF_REGS_PER_PAGE);
if (req.num_low_latency_uuars > req.total_num_uuars - 1)
return ERR_PTR(-EINVAL);
num_uars = req.total_num_uuars / MLX5_NON_FP_BF_REGS_PER_PAGE;
gross_uuars = num_uars * MLX5_BF_REGS_PER_PAGE;
resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp);
resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size);
resp.cache_line_size = L1_CACHE_BYTES;
resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq);
resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq);
resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz);
resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz);
context = kzalloc(sizeof(*context), GFP_KERNEL);
if (!context)
return ERR_PTR(-ENOMEM);
uuari = &context->uuari;
mutex_init(&uuari->lock);
uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL);
if (!uars) {
err = -ENOMEM;
goto out_ctx;
}
uuari->bitmap = kcalloc(BITS_TO_LONGS(gross_uuars),
sizeof(*uuari->bitmap),
GFP_KERNEL);
if (!uuari->bitmap) {
err = -ENOMEM;
goto out_uar_ctx;
}
/*
* clear all fast path uuars
*/
for (i = 0; i < gross_uuars; i++) {
uuarn = i & 3;
if (uuarn == 2 || uuarn == 3)
set_bit(i, uuari->bitmap);
}
uuari->count = kcalloc(gross_uuars, sizeof(*uuari->count), GFP_KERNEL);
if (!uuari->count) {
err = -ENOMEM;
goto out_bitmap;
}
for (i = 0; i < num_uars; i++) {
err = mlx5_cmd_alloc_uar(dev->mdev, &uars[i].index);
if (err)
goto out_count;
}
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range;
#endif
INIT_LIST_HEAD(&context->db_page_list);
mutex_init(&context->db_page_mutex);
resp.tot_uuars = req.total_num_uuars;
resp.num_ports = MLX5_CAP_GEN(dev->mdev, num_ports);
err = ib_copy_to_udata(udata, &resp,
sizeof(resp) - sizeof(resp.reserved));
if (err)
goto out_uars;
uuari->ver = ver;
uuari->num_low_latency_uuars = req.num_low_latency_uuars;
uuari->uars = uars;
uuari->num_uars = num_uars;
return &context->ibucontext;
out_uars:
for (i--; i >= 0; i--)
mlx5_cmd_free_uar(dev->mdev, uars[i].index);
out_count:
kfree(uuari->count);
out_bitmap:
kfree(uuari->bitmap);
out_uar_ctx:
kfree(uars);
out_ctx:
kfree(context);
return ERR_PTR(err);
}
static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
{
struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
struct mlx5_uuar_info *uuari = &context->uuari;
int i;
for (i = 0; i < uuari->num_uars; i++) {
if (mlx5_cmd_free_uar(dev->mdev, uuari->uars[i].index))
mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index);
}
kfree(uuari->count);
kfree(uuari->bitmap);
kfree(uuari->uars);
kfree(context);
return 0;
}
static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index)
{
return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + index;
}
static int get_command(unsigned long offset)
{
return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
}
static int get_arg(unsigned long offset)
{
return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
}
static int get_index(unsigned long offset)
{
return get_arg(offset);
}
static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
{
struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
struct mlx5_uuar_info *uuari = &context->uuari;
unsigned long command;
unsigned long idx;
phys_addr_t pfn;
command = get_command(vma->vm_pgoff);
switch (command) {
case MLX5_IB_MMAP_REGULAR_PAGE:
if (vma->vm_end - vma->vm_start != PAGE_SIZE)
return -EINVAL;
idx = get_index(vma->vm_pgoff);
if (idx >= uuari->num_uars)
return -EINVAL;
pfn = uar_index2pfn(dev, uuari->uars[idx].index);
mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx,
(unsigned long long)pfn);
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
if (io_remap_pfn_range(vma, vma->vm_start, pfn,
PAGE_SIZE, vma->vm_page_prot))
return -EAGAIN;
mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n",
vma->vm_start,
(unsigned long long)pfn << PAGE_SHIFT);
break;
case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
return -ENOSYS;
default:
return -EINVAL;
}
return 0;
}
static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
struct ib_ucontext *context,
struct ib_udata *udata)
{
struct mlx5_ib_alloc_pd_resp resp;
struct mlx5_ib_pd *pd;
int err;
pd = kmalloc(sizeof(*pd), GFP_KERNEL);
if (!pd)
return ERR_PTR(-ENOMEM);
err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn);
if (err) {
kfree(pd);
return ERR_PTR(err);
}
if (context) {
resp.pdn = pd->pdn;
if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn);
kfree(pd);
return ERR_PTR(-EFAULT);
}
}
return &pd->ibpd;
}
static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
{
struct mlx5_ib_dev *mdev = to_mdev(pd->device);
struct mlx5_ib_pd *mpd = to_mpd(pd);
mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn);
kfree(mpd);
return 0;
}
static bool outer_header_zero(u32 *match_criteria)
{
int size = MLX5_ST_SZ_BYTES(fte_match_param);
char *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_criteria,
outer_headers);
return outer_headers_c[0] == 0 && !memcmp(outer_headers_c,
outer_headers_c + 1,
size - 1);
}
static int parse_flow_attr(u32 *match_c, u32 *match_v,
union ib_flow_spec *ib_spec)
{
void *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
outer_headers);
void *outer_headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
outer_headers);
switch (ib_spec->type) {
case IB_FLOW_SPEC_ETH:
if (ib_spec->size != sizeof(ib_spec->eth))
return -EINVAL;
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
dmac_47_16),
ib_spec->eth.mask.dst_mac);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
dmac_47_16),
ib_spec->eth.val.dst_mac);
if (ib_spec->eth.mask.vlan_tag) {
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
vlan_tag, 1);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
vlan_tag, 1);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
first_vid, ntohs(ib_spec->eth.val.vlan_tag));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
first_cfi,
ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
first_cfi,
ntohs(ib_spec->eth.val.vlan_tag) >> 12);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
first_prio,
ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
first_prio,
ntohs(ib_spec->eth.val.vlan_tag) >> 13);
}
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
ethertype, ntohs(ib_spec->eth.mask.ether_type));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
ethertype, ntohs(ib_spec->eth.val.ether_type));
break;
case IB_FLOW_SPEC_IPV4:
if (ib_spec->size != sizeof(ib_spec->ipv4))
return -EINVAL;
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c,
ethertype, 0xffff);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v,
ethertype, ETH_P_IP);
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
src_ipv4_src_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.mask.src_ip,
sizeof(ib_spec->ipv4.mask.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
src_ipv4_src_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.val.src_ip,
sizeof(ib_spec->ipv4.val.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.mask.dst_ip,
sizeof(ib_spec->ipv4.mask.dst_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_v,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.val.dst_ip,
sizeof(ib_spec->ipv4.val.dst_ip));
break;
case IB_FLOW_SPEC_TCP:
if (ib_spec->size != sizeof(ib_spec->tcp_udp))
return -EINVAL;
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol,
0xff);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol,
IPPROTO_TCP);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_sport,
ntohs(ib_spec->tcp_udp.mask.src_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_sport,
ntohs(ib_spec->tcp_udp.val.src_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, tcp_dport,
ntohs(ib_spec->tcp_udp.mask.dst_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, tcp_dport,
ntohs(ib_spec->tcp_udp.val.dst_port));
break;
case IB_FLOW_SPEC_UDP:
if (ib_spec->size != sizeof(ib_spec->tcp_udp))
return -EINVAL;
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, ip_protocol,
0xff);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, ip_protocol,
IPPROTO_UDP);
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_sport,
ntohs(ib_spec->tcp_udp.mask.src_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_sport,
ntohs(ib_spec->tcp_udp.val.src_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_c, udp_dport,
ntohs(ib_spec->tcp_udp.mask.dst_port));
MLX5_SET(fte_match_set_lyr_2_4, outer_headers_v, udp_dport,
ntohs(ib_spec->tcp_udp.val.dst_port));
break;
default:
return -EINVAL;
}
return 0;
}
/* If a flow could catch both multicast and unicast packets,
* it won't fall into the multicast flow steering table and this rule
* could steal other multicast packets.
*/
static bool flow_is_multicast_only(struct ib_flow_attr *ib_attr)
{
struct ib_flow_spec_eth *eth_spec;
if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
ib_attr->size < sizeof(struct ib_flow_attr) +
sizeof(struct ib_flow_spec_eth) ||
ib_attr->num_of_specs < 1)
return false;
eth_spec = (struct ib_flow_spec_eth *)(ib_attr + 1);
if (eth_spec->type != IB_FLOW_SPEC_ETH ||
eth_spec->size != sizeof(*eth_spec))
return false;
return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
is_multicast_ether_addr(eth_spec->val.dst_mac);
}
static bool is_valid_attr(struct ib_flow_attr *flow_attr)
{
union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
bool has_ipv4_spec = false;
bool eth_type_ipv4 = true;
unsigned int spec_index;
/* Validate that ethertype is correct */
for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
if (ib_spec->type == IB_FLOW_SPEC_ETH &&
ib_spec->eth.mask.ether_type) {
if (!((ib_spec->eth.mask.ether_type == htons(0xffff)) &&
ib_spec->eth.val.ether_type == htons(ETH_P_IP)))
eth_type_ipv4 = false;
} else if (ib_spec->type == IB_FLOW_SPEC_IPV4) {
has_ipv4_spec = true;
}
ib_spec = (void *)ib_spec + ib_spec->size;
}
return !has_ipv4_spec || eth_type_ipv4;
}
static void put_flow_table(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *prio, bool ft_added)
{
prio->refcount -= !!ft_added;
if (!prio->refcount) {
mlx5_destroy_flow_table(prio->flow_table);
prio->flow_table = NULL;
}
}
static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
{
struct mlx5_ib_dev *dev = to_mdev(flow_id->qp->device);
struct mlx5_ib_flow_handler *handler = container_of(flow_id,
struct mlx5_ib_flow_handler,
ibflow);
struct mlx5_ib_flow_handler *iter, *tmp;
mutex_lock(&dev->flow_db.lock);
list_for_each_entry_safe(iter, tmp, &handler->list, list) {
mlx5_del_flow_rule(iter->rule);
list_del(&iter->list);
kfree(iter);
}
mlx5_del_flow_rule(handler->rule);
put_flow_table(dev, &dev->flow_db.prios[handler->prio], true);
mutex_unlock(&dev->flow_db.lock);
kfree(handler);
return 0;
}
#define MLX5_FS_MAX_TYPES 10
#define MLX5_FS_MAX_ENTRIES 32000UL
static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
struct ib_flow_attr *flow_attr)
{
struct mlx5_flow_namespace *ns = NULL;
struct mlx5_ib_flow_prio *prio;
struct mlx5_flow_table *ft;
int num_entries;
int num_groups;
int priority;
int err = 0;
if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
if (flow_is_multicast_only(flow_attr))
priority = MLX5_IB_FLOW_MCAST_PRIO;
else
priority = flow_attr->priority;
ns = mlx5_get_flow_namespace(dev->mdev,
MLX5_FLOW_NAMESPACE_BYPASS);
num_entries = MLX5_FS_MAX_ENTRIES;
num_groups = MLX5_FS_MAX_TYPES;
prio = &dev->flow_db.prios[priority];
} else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
ns = mlx5_get_flow_namespace(dev->mdev,
MLX5_FLOW_NAMESPACE_LEFTOVERS);
build_leftovers_ft_param(&priority,
&num_entries,
&num_groups);
prio = &dev->flow_db.prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
}
if (!ns)
return ERR_PTR(-ENOTSUPP);
ft = prio->flow_table;
if (!ft) {
ft = mlx5_create_auto_grouped_flow_table(ns, priority,
num_entries,
num_groups);
if (!IS_ERR(ft)) {
prio->refcount = 0;
prio->flow_table = ft;
} else {
err = PTR_ERR(ft);
}
}
return err ? ERR_PTR(err) : prio;
}
static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
struct ib_flow_attr *flow_attr,
struct mlx5_flow_destination *dst)
{
struct mlx5_flow_table *ft = ft_prio->flow_table;
struct mlx5_ib_flow_handler *handler;
void *ib_flow = flow_attr + 1;
u8 match_criteria_enable = 0;
unsigned int spec_index;
u32 *match_c;
u32 *match_v;
int err = 0;
if (!is_valid_attr(flow_attr))
return ERR_PTR(-EINVAL);
match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
handler = kzalloc(sizeof(*handler), GFP_KERNEL);
if (!handler || !match_c || !match_v) {
err = -ENOMEM;
goto free;
}
INIT_LIST_HEAD(&handler->list);
for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
err = parse_flow_attr(match_c, match_v, ib_flow);
if (err < 0)
goto free;
ib_flow += ((union ib_flow_spec *)ib_flow)->size;
}
/* Outer header support only */
match_criteria_enable = (!outer_header_zero(match_c)) << 0;
handler->rule = mlx5_add_flow_rule(ft, match_criteria_enable,
match_c, match_v,
MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,
MLX5_FS_DEFAULT_FLOW_TAG,
dst);
if (IS_ERR(handler->rule)) {
err = PTR_ERR(handler->rule);
goto free;
}
handler->prio = ft_prio - dev->flow_db.prios;
ft_prio->flow_table = ft;
free:
if (err)
kfree(handler);
kfree(match_c);
kfree(match_v);
return err ? ERR_PTR(err) : handler;
}
enum {
LEFTOVERS_MC,
LEFTOVERS_UC,
};
static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
struct ib_flow_attr *flow_attr,
struct mlx5_flow_destination *dst)
{
struct mlx5_ib_flow_handler *handler_ucast = NULL;
struct mlx5_ib_flow_handler *handler = NULL;
static struct {
struct ib_flow_attr flow_attr;
struct ib_flow_spec_eth eth_flow;
} leftovers_specs[] = {
[LEFTOVERS_MC] = {
.flow_attr = {
.num_of_specs = 1,
.size = sizeof(leftovers_specs[0])
},
.eth_flow = {
.type = IB_FLOW_SPEC_ETH,
.size = sizeof(struct ib_flow_spec_eth),
.mask = {.dst_mac = {0x1} },
.val = {.dst_mac = {0x1} }
}
},
[LEFTOVERS_UC] = {
.flow_attr = {
.num_of_specs = 1,
.size = sizeof(leftovers_specs[0])
},
.eth_flow = {
.type = IB_FLOW_SPEC_ETH,
.size = sizeof(struct ib_flow_spec_eth),
.mask = {.dst_mac = {0x1} },
.val = {.dst_mac = {} }
}
}
};
handler = create_flow_rule(dev, ft_prio,
&leftovers_specs[LEFTOVERS_MC].flow_attr,
dst);
if (!IS_ERR(handler) &&
flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
handler_ucast = create_flow_rule(dev, ft_prio,
&leftovers_specs[LEFTOVERS_UC].flow_attr,
dst);
if (IS_ERR(handler_ucast)) {
kfree(handler);
handler = handler_ucast;
} else {
list_add(&handler_ucast->list, &handler->list);
}
}
return handler;
}
static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
struct ib_flow_attr *flow_attr,
int domain)
{
struct mlx5_ib_dev *dev = to_mdev(qp->device);
struct mlx5_ib_flow_handler *handler = NULL;
struct mlx5_flow_destination *dst = NULL;
struct mlx5_ib_flow_prio *ft_prio;
int err;
if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO)
return ERR_PTR(-ENOSPC);
if (domain != IB_FLOW_DOMAIN_USER ||
flow_attr->port > MLX5_CAP_GEN(dev->mdev, num_ports) ||
flow_attr->flags)
return ERR_PTR(-EINVAL);
dst = kzalloc(sizeof(*dst), GFP_KERNEL);
if (!dst)
return ERR_PTR(-ENOMEM);
mutex_lock(&dev->flow_db.lock);
ft_prio = get_flow_table(dev, flow_attr);
if (IS_ERR(ft_prio)) {
err = PTR_ERR(ft_prio);
goto unlock;
}
dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
dst->tir_num = to_mqp(qp)->raw_packet_qp.rq.tirn;
if (flow_attr->type == IB_FLOW_ATTR_NORMAL) {
handler = create_flow_rule(dev, ft_prio, flow_attr,
dst);
} else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) {
handler = create_leftovers_rule(dev, ft_prio, flow_attr,
dst);
} else {
err = -EINVAL;
goto destroy_ft;
}
if (IS_ERR(handler)) {
err = PTR_ERR(handler);
handler = NULL;
goto destroy_ft;
}
ft_prio->refcount++;
mutex_unlock(&dev->flow_db.lock);
kfree(dst);
return &handler->ibflow;
destroy_ft:
put_flow_table(dev, ft_prio, false);
unlock:
mutex_unlock(&dev->flow_db.lock);
kfree(dst);
kfree(handler);
return ERR_PTR(err);
}
static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
int err;
err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num);
if (err)
mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
ibqp->qp_num, gid->raw);
return err;
}
static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
int err;
err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num);
if (err)
mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
ibqp->qp_num, gid->raw);
return err;
}
static int init_node_data(struct mlx5_ib_dev *dev)
{
int err;
err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc);
if (err)
return err;
dev->mdev->rev_id = dev->mdev->pdev->revision;
return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid);
}
static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages);
}
static ssize_t show_reg_pages(struct device *device,
struct device_attribute *attr, char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages));
}
static ssize_t show_hca(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "MT%d\n", dev->mdev->pdev->device);
}
static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(dev->mdev),
fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev));
}
static ssize_t show_rev(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "%x\n", dev->mdev->rev_id);
}
static ssize_t show_board(struct device *device, struct device_attribute *attr,
char *buf)
{
struct mlx5_ib_dev *dev =
container_of(device, struct mlx5_ib_dev, ib_dev.dev);
return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
dev->mdev->board_id);
}
static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
static struct device_attribute *mlx5_class_attributes[] = {
&dev_attr_hw_rev,
&dev_attr_fw_ver,
&dev_attr_hca_type,
&dev_attr_board_id,
&dev_attr_fw_pages,
&dev_attr_reg_pages,
};
static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
enum mlx5_dev_event event, unsigned long param)
{
struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context;
struct ib_event ibev;
u8 port = 0;
switch (event) {
case MLX5_DEV_EVENT_SYS_ERROR:
ibdev->ib_active = false;
ibev.event = IB_EVENT_DEVICE_FATAL;
break;
case MLX5_DEV_EVENT_PORT_UP:
ibev.event = IB_EVENT_PORT_ACTIVE;
port = (u8)param;
break;
case MLX5_DEV_EVENT_PORT_DOWN:
ibev.event = IB_EVENT_PORT_ERR;
port = (u8)param;
break;
case MLX5_DEV_EVENT_PORT_INITIALIZED:
/* not used by ULPs */
return;
case MLX5_DEV_EVENT_LID_CHANGE:
ibev.event = IB_EVENT_LID_CHANGE;
port = (u8)param;
break;
case MLX5_DEV_EVENT_PKEY_CHANGE:
ibev.event = IB_EVENT_PKEY_CHANGE;
port = (u8)param;
break;
case MLX5_DEV_EVENT_GUID_CHANGE:
ibev.event = IB_EVENT_GID_CHANGE;
port = (u8)param;
break;
case MLX5_DEV_EVENT_CLIENT_REREG:
ibev.event = IB_EVENT_CLIENT_REREGISTER;
port = (u8)param;
break;
}
ibev.device = &ibdev->ib_dev;
ibev.element.port_num = port;
if (port < 1 || port > ibdev->num_ports) {
mlx5_ib_warn(ibdev, "warning: event on port %d\n", port);
return;
}
if (ibdev->ib_active)
ib_dispatch_event(&ibev);
}
static void get_ext_port_caps(struct mlx5_ib_dev *dev)
{
int port;
for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++)
mlx5_query_ext_port_caps(dev, port);
}
static int get_port_caps(struct mlx5_ib_dev *dev)
{
struct ib_device_attr *dprops = NULL;
struct ib_port_attr *pprops = NULL;
int err = -ENOMEM;
int port;
struct ib_udata uhw = {.inlen = 0, .outlen = 0};
pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
if (!pprops)
goto out;
dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
if (!dprops)
goto out;
err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw);
if (err) {
mlx5_ib_warn(dev, "query_device failed %d\n", err);
goto out;
}
for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) {
err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
if (err) {
mlx5_ib_warn(dev, "query_port %d failed %d\n",
port, err);
break;
}
dev->mdev->port_caps[port - 1].pkey_table_len =
dprops->max_pkeys;
dev->mdev->port_caps[port - 1].gid_table_len =
pprops->gid_tbl_len;
mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n",
dprops->max_pkeys, pprops->gid_tbl_len);
}
out:
kfree(pprops);
kfree(dprops);
return err;
}
static void destroy_umrc_res(struct mlx5_ib_dev *dev)
{
int err;
err = mlx5_mr_cache_cleanup(dev);
if (err)
mlx5_ib_warn(dev, "mr cache cleanup failed\n");
mlx5_ib_destroy_qp(dev->umrc.qp);
ib_destroy_cq(dev->umrc.cq);
ib_dealloc_pd(dev->umrc.pd);
}
enum {
MAX_UMR_WR = 128,
};
static int create_umr_res(struct mlx5_ib_dev *dev)
{
struct ib_qp_init_attr *init_attr = NULL;
struct ib_qp_attr *attr = NULL;
struct ib_pd *pd;
struct ib_cq *cq;
struct ib_qp *qp;
struct ib_cq_init_attr cq_attr = {};
int ret;
attr = kzalloc(sizeof(*attr), GFP_KERNEL);
init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
if (!attr || !init_attr) {
ret = -ENOMEM;
goto error_0;
}
pd = ib_alloc_pd(&dev->ib_dev);
if (IS_ERR(pd)) {
mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
ret = PTR_ERR(pd);
goto error_0;
}
cq_attr.cqe = 128;
cq = ib_create_cq(&dev->ib_dev, mlx5_umr_cq_handler, NULL, NULL,
&cq_attr);
if (IS_ERR(cq)) {
mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
ret = PTR_ERR(cq);
goto error_2;
}
ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
init_attr->send_cq = cq;
init_attr->recv_cq = cq;
init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
init_attr->cap.max_send_wr = MAX_UMR_WR;
init_attr->cap.max_send_sge = 1;
init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
init_attr->port_num = 1;
qp = mlx5_ib_create_qp(pd, init_attr, NULL);
if (IS_ERR(qp)) {
mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
ret = PTR_ERR(qp);
goto error_3;
}
qp->device = &dev->ib_dev;
qp->real_qp = qp;
qp->uobject = NULL;
qp->qp_type = MLX5_IB_QPT_REG_UMR;
attr->qp_state = IB_QPS_INIT;
attr->port_num = 1;
ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
IB_QP_PORT, NULL);
if (ret) {
mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
goto error_4;
}
memset(attr, 0, sizeof(*attr));
attr->qp_state = IB_QPS_RTR;
attr->path_mtu = IB_MTU_256;
ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
if (ret) {
mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
goto error_4;
}
memset(attr, 0, sizeof(*attr));
attr->qp_state = IB_QPS_RTS;
ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
if (ret) {
mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
goto error_4;
}
dev->umrc.qp = qp;
dev->umrc.cq = cq;
dev->umrc.pd = pd;
sema_init(&dev->umrc.sem, MAX_UMR_WR);
ret = mlx5_mr_cache_init(dev);
if (ret) {
mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
goto error_4;
}
kfree(attr);
kfree(init_attr);
return 0;
error_4:
mlx5_ib_destroy_qp(qp);
error_3:
ib_destroy_cq(cq);
error_2:
ib_dealloc_pd(pd);
error_0:
kfree(attr);
kfree(init_attr);
return ret;
}
static int create_dev_resources(struct mlx5_ib_resources *devr)
{
struct ib_srq_init_attr attr;
struct mlx5_ib_dev *dev;
struct ib_cq_init_attr cq_attr = {.cqe = 1};
int ret = 0;
dev = container_of(devr, struct mlx5_ib_dev, devr);
devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
if (IS_ERR(devr->p0)) {
ret = PTR_ERR(devr->p0);
goto error0;
}
devr->p0->device = &dev->ib_dev;
devr->p0->uobject = NULL;
atomic_set(&devr->p0->usecnt, 0);
devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, &cq_attr, NULL, NULL);
if (IS_ERR(devr->c0)) {
ret = PTR_ERR(devr->c0);
goto error1;
}
devr->c0->device = &dev->ib_dev;
devr->c0->uobject = NULL;
devr->c0->comp_handler = NULL;
devr->c0->event_handler = NULL;
devr->c0->cq_context = NULL;
atomic_set(&devr->c0->usecnt, 0);
devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
if (IS_ERR(devr->x0)) {
ret = PTR_ERR(devr->x0);
goto error2;
}
devr->x0->device = &dev->ib_dev;
devr->x0->inode = NULL;
atomic_set(&devr->x0->usecnt, 0);
mutex_init(&devr->x0->tgt_qp_mutex);
INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
if (IS_ERR(devr->x1)) {
ret = PTR_ERR(devr->x1);
goto error3;
}
devr->x1->device = &dev->ib_dev;
devr->x1->inode = NULL;
atomic_set(&devr->x1->usecnt, 0);
mutex_init(&devr->x1->tgt_qp_mutex);
INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
memset(&attr, 0, sizeof(attr));
attr.attr.max_sge = 1;
attr.attr.max_wr = 1;
attr.srq_type = IB_SRQT_XRC;
attr.ext.xrc.cq = devr->c0;
attr.ext.xrc.xrcd = devr->x0;
devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
if (IS_ERR(devr->s0)) {
ret = PTR_ERR(devr->s0);
goto error4;
}
devr->s0->device = &dev->ib_dev;
devr->s0->pd = devr->p0;
devr->s0->uobject = NULL;
devr->s0->event_handler = NULL;
devr->s0->srq_context = NULL;
devr->s0->srq_type = IB_SRQT_XRC;
devr->s0->ext.xrc.xrcd = devr->x0;
devr->s0->ext.xrc.cq = devr->c0;
atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
atomic_inc(&devr->s0->ext.xrc.cq->usecnt);
atomic_inc(&devr->p0->usecnt);
atomic_set(&devr->s0->usecnt, 0);
memset(&attr, 0, sizeof(attr));
attr.attr.max_sge = 1;
attr.attr.max_wr = 1;
attr.srq_type = IB_SRQT_BASIC;
devr->s1 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
if (IS_ERR(devr->s1)) {
ret = PTR_ERR(devr->s1);
goto error5;
}
devr->s1->device = &dev->ib_dev;
devr->s1->pd = devr->p0;
devr->s1->uobject = NULL;
devr->s1->event_handler = NULL;
devr->s1->srq_context = NULL;
devr->s1->srq_type = IB_SRQT_BASIC;
devr->s1->ext.xrc.cq = devr->c0;
atomic_inc(&devr->p0->usecnt);
atomic_set(&devr->s0->usecnt, 0);
return 0;
error5:
mlx5_ib_destroy_srq(devr->s0);
error4:
mlx5_ib_dealloc_xrcd(devr->x1);
error3:
mlx5_ib_dealloc_xrcd(devr->x0);
error2:
mlx5_ib_destroy_cq(devr->c0);
error1:
mlx5_ib_dealloc_pd(devr->p0);
error0:
return ret;
}
static void destroy_dev_resources(struct mlx5_ib_resources *devr)
{
mlx5_ib_destroy_srq(devr->s1);
mlx5_ib_destroy_srq(devr->s0);
mlx5_ib_dealloc_xrcd(devr->x0);
mlx5_ib_dealloc_xrcd(devr->x1);
mlx5_ib_destroy_cq(devr->c0);
mlx5_ib_dealloc_pd(devr->p0);
}
static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable)
{
struct ib_port_attr attr;
int err;
err = mlx5_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->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
immutable->max_mad_size = IB_MGMT_MAD_SIZE;
return 0;
}
static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
{
struct mlx5_ib_dev *dev;
int err;
int i;
/* don't create IB instance over Eth ports, no RoCE yet! */
if (MLX5_CAP_GEN(mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH)
return NULL;
printk_once(KERN_INFO "%s", mlx5_version);
dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
if (!dev)
return NULL;
dev->mdev = mdev;
err = get_port_caps(dev);
if (err)
goto err_dealloc;
if (mlx5_use_mad_ifc(dev))
get_ext_port_caps(dev);
MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock);
strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX);
dev->ib_dev.owner = THIS_MODULE;
dev->ib_dev.node_type = RDMA_NODE_IB_CA;
dev->ib_dev.local_dma_lkey = 0 /* not supported for now */;
dev->num_ports = MLX5_CAP_GEN(mdev, num_ports);
dev->ib_dev.phys_port_cnt = dev->num_ports;
dev->ib_dev.num_comp_vectors =
dev->mdev->priv.eq_table.num_comp_vectors;
dev->ib_dev.dma_device = &mdev->pdev->dev;
dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
dev->ib_dev.uverbs_cmd_mask =
(1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
(1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
(1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
(1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
(1ull << IB_USER_VERBS_CMD_REG_MR) |
(1ull << IB_USER_VERBS_CMD_DEREG_MR) |
(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
(1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
(1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
(1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
(1ull << IB_USER_VERBS_CMD_CREATE_QP) |
(1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
(1ull << IB_USER_VERBS_CMD_QUERY_QP) |
(1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
(1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
(1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
(1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
(1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
(1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
(1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
(1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
(1ull << IB_USER_VERBS_CMD_OPEN_QP);
dev->ib_dev.uverbs_ex_cmd_mask =
(1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE);
dev->ib_dev.query_device = mlx5_ib_query_device;
dev->ib_dev.query_port = mlx5_ib_query_port;
dev->ib_dev.query_gid = mlx5_ib_query_gid;
dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
dev->ib_dev.modify_device = mlx5_ib_modify_device;
dev->ib_dev.modify_port = mlx5_ib_modify_port;
dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
dev->ib_dev.mmap = mlx5_ib_mmap;
dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
dev->ib_dev.create_ah = mlx5_ib_create_ah;
dev->ib_dev.query_ah = mlx5_ib_query_ah;
dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
dev->ib_dev.create_srq = mlx5_ib_create_srq;
dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
dev->ib_dev.query_srq = mlx5_ib_query_srq;
dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
dev->ib_dev.create_qp = mlx5_ib_create_qp;
dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
dev->ib_dev.query_qp = mlx5_ib_query_qp;
dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
dev->ib_dev.post_send = mlx5_ib_post_send;
dev->ib_dev.post_recv = mlx5_ib_post_recv;
dev->ib_dev.create_cq = mlx5_ib_create_cq;
dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
dev->ib_dev.process_mad = mlx5_ib_process_mad;
dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr;
dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg;
dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
dev->ib_dev.get_port_immutable = mlx5_port_immutable;
mlx5_ib_internal_fill_odp_caps(dev);
if (MLX5_CAP_GEN(mdev, xrc)) {
dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
dev->ib_dev.uverbs_cmd_mask |=
(1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
(1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
}
if (mlx5_ib_port_link_layer(&dev->ib_dev) ==
IB_LINK_LAYER_ETHERNET) {
dev->ib_dev.create_flow = mlx5_ib_create_flow;
dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow;
dev->ib_dev.uverbs_ex_cmd_mask |=
(1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
}
err = init_node_data(dev);
if (err)
goto err_dealloc;
mutex_init(&dev->flow_db.lock);
mutex_init(&dev->cap_mask_mutex);
err = create_dev_resources(&dev->devr);
if (err)
goto err_dealloc;
err = mlx5_ib_odp_init_one(dev);
if (err)
goto err_rsrc;
err = ib_register_device(&dev->ib_dev, NULL);
if (err)
goto err_odp;
err = create_umr_res(dev);
if (err)
goto err_dev;
for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
err = device_create_file(&dev->ib_dev.dev,
mlx5_class_attributes[i]);
if (err)
goto err_umrc;
}
dev->ib_active = true;
return dev;
err_umrc:
destroy_umrc_res(dev);
err_dev:
ib_unregister_device(&dev->ib_dev);
err_odp:
mlx5_ib_odp_remove_one(dev);
err_rsrc:
destroy_dev_resources(&dev->devr);
err_dealloc:
ib_dealloc_device((struct ib_device *)dev);
return NULL;
}
static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context)
{
struct mlx5_ib_dev *dev = context;
ib_unregister_device(&dev->ib_dev);
destroy_umrc_res(dev);
mlx5_ib_odp_remove_one(dev);
destroy_dev_resources(&dev->devr);
ib_dealloc_device(&dev->ib_dev);
}
static struct mlx5_interface mlx5_ib_interface = {
.add = mlx5_ib_add,
.remove = mlx5_ib_remove,
.event = mlx5_ib_event,
.protocol = MLX5_INTERFACE_PROTOCOL_IB,
};
static int __init mlx5_ib_init(void)
{
int err;
if (deprecated_prof_sel != 2)
pr_warn("prof_sel is deprecated for mlx5_ib, set it for mlx5_core\n");
err = mlx5_ib_odp_init();
if (err)
return err;
err = mlx5_register_interface(&mlx5_ib_interface);
if (err)
goto clean_odp;
return err;
clean_odp:
mlx5_ib_odp_cleanup();
return err;
}
static void __exit mlx5_ib_cleanup(void)
{
mlx5_unregister_interface(&mlx5_ib_interface);
mlx5_ib_odp_cleanup();
}
module_init(mlx5_ib_init);
module_exit(mlx5_ib_cleanup);
