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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2019 Mellanox Technologies. */
#include <linux/mlx5/eswitch.h>
#include "dr_types.h"
static int dr_domain_init_cache(struct mlx5dr_domain *dmn)
{
/* Per vport cached FW FT for checksum recalculation, this
* recalculation is needed due to a HW bug.
*/
dmn->cache.recalc_cs_ft = kcalloc(dmn->info.caps.num_vports,
sizeof(dmn->cache.recalc_cs_ft[0]),
GFP_KERNEL);
if (!dmn->cache.recalc_cs_ft)
return -ENOMEM;
return 0;
}
static void dr_domain_uninit_cache(struct mlx5dr_domain *dmn)
{
int i;
for (i = 0; i < dmn->info.caps.num_vports; i++) {
if (!dmn->cache.recalc_cs_ft[i])
continue;
mlx5dr_fw_destroy_recalc_cs_ft(dmn, dmn->cache.recalc_cs_ft[i]);
}
kfree(dmn->cache.recalc_cs_ft);
}
int mlx5dr_domain_cache_get_recalc_cs_ft_addr(struct mlx5dr_domain *dmn,
u32 vport_num,
u64 *rx_icm_addr)
{
struct mlx5dr_fw_recalc_cs_ft *recalc_cs_ft;
recalc_cs_ft = dmn->cache.recalc_cs_ft[vport_num];
if (!recalc_cs_ft) {
/* Table not in cache, need to allocate a new one */
recalc_cs_ft = mlx5dr_fw_create_recalc_cs_ft(dmn, vport_num);
if (!recalc_cs_ft)
return -EINVAL;
dmn->cache.recalc_cs_ft[vport_num] = recalc_cs_ft;
}
*rx_icm_addr = recalc_cs_ft->rx_icm_addr;
return 0;
}
static int dr_domain_init_resources(struct mlx5dr_domain *dmn)
{
int ret;
ret = mlx5_core_alloc_pd(dmn->mdev, &dmn->pdn);
if (ret) {
mlx5dr_err(dmn, "Couldn't allocate PD, ret: %d", ret);
return ret;
}
dmn->uar = mlx5_get_uars_page(dmn->mdev);
if (!dmn->uar) {
mlx5dr_err(dmn, "Couldn't allocate UAR\n");
ret = -ENOMEM;
goto clean_pd;
}
dmn->ste_icm_pool = mlx5dr_icm_pool_create(dmn, DR_ICM_TYPE_STE);
if (!dmn->ste_icm_pool) {
mlx5dr_err(dmn, "Couldn't get icm memory\n");
ret = -ENOMEM;
goto clean_uar;
}
dmn->action_icm_pool = mlx5dr_icm_pool_create(dmn, DR_ICM_TYPE_MODIFY_ACTION);
if (!dmn->action_icm_pool) {
mlx5dr_err(dmn, "Couldn't get action icm memory\n");
ret = -ENOMEM;
goto free_ste_icm_pool;
}
ret = mlx5dr_send_ring_alloc(dmn);
if (ret) {
mlx5dr_err(dmn, "Couldn't create send-ring\n");
goto free_action_icm_pool;
}
return 0;
free_action_icm_pool:
mlx5dr_icm_pool_destroy(dmn->action_icm_pool);
free_ste_icm_pool:
mlx5dr_icm_pool_destroy(dmn->ste_icm_pool);
clean_uar:
mlx5_put_uars_page(dmn->mdev, dmn->uar);
clean_pd:
mlx5_core_dealloc_pd(dmn->mdev, dmn->pdn);
return ret;
}
static void dr_domain_uninit_resources(struct mlx5dr_domain *dmn)
{
mlx5dr_send_ring_free(dmn, dmn->send_ring);
mlx5dr_icm_pool_destroy(dmn->action_icm_pool);
mlx5dr_icm_pool_destroy(dmn->ste_icm_pool);
mlx5_put_uars_page(dmn->mdev, dmn->uar);
mlx5_core_dealloc_pd(dmn->mdev, dmn->pdn);
}
static int dr_domain_query_vport(struct mlx5dr_domain *dmn,
bool other_vport,
u16 vport_number)
{
struct mlx5dr_cmd_vport_cap *vport_caps;
int ret;
vport_caps = &dmn->info.caps.vports_caps[vport_number];
ret = mlx5dr_cmd_query_esw_vport_context(dmn->mdev,
other_vport,
vport_number,
&vport_caps->icm_address_rx,
&vport_caps->icm_address_tx);
if (ret)
return ret;
ret = mlx5dr_cmd_query_gvmi(dmn->mdev,
other_vport,
vport_number,
&vport_caps->vport_gvmi);
if (ret)
return ret;
vport_caps->num = vport_number;
vport_caps->vhca_gvmi = dmn->info.caps.gvmi;
return 0;
}
static int dr_domain_query_vports(struct mlx5dr_domain *dmn)
{
struct mlx5dr_esw_caps *esw_caps = &dmn->info.caps.esw_caps;
struct mlx5dr_cmd_vport_cap *wire_vport;
int vport;
int ret;
/* Query vports (except wire vport) */
for (vport = 0; vport < dmn->info.caps.num_esw_ports - 1; vport++) {
ret = dr_domain_query_vport(dmn, !!vport, vport);
if (ret)
return ret;
}
/* Last vport is the wire port */
wire_vport = &dmn->info.caps.vports_caps[vport];
wire_vport->num = WIRE_PORT;
wire_vport->icm_address_rx = esw_caps->uplink_icm_address_rx;
wire_vport->icm_address_tx = esw_caps->uplink_icm_address_tx;
wire_vport->vport_gvmi = 0;
wire_vport->vhca_gvmi = dmn->info.caps.gvmi;
return 0;
}
static int dr_domain_query_fdb_caps(struct mlx5_core_dev *mdev,
struct mlx5dr_domain *dmn)
{
int ret;
if (!dmn->info.caps.eswitch_manager)
return -EOPNOTSUPP;
ret = mlx5dr_cmd_query_esw_caps(mdev, &dmn->info.caps.esw_caps);
if (ret)
return ret;
dmn->info.caps.fdb_sw_owner = dmn->info.caps.esw_caps.sw_owner;
dmn->info.caps.esw_rx_drop_address = dmn->info.caps.esw_caps.drop_icm_address_rx;
dmn->info.caps.esw_tx_drop_address = dmn->info.caps.esw_caps.drop_icm_address_tx;
dmn->info.caps.vports_caps = kcalloc(dmn->info.caps.num_esw_ports,
sizeof(dmn->info.caps.vports_caps[0]),
GFP_KERNEL);
if (!dmn->info.caps.vports_caps)
return -ENOMEM;
ret = dr_domain_query_vports(dmn);
if (ret) {
mlx5dr_err(dmn, "Failed to query vports caps (err: %d)", ret);
goto free_vports_caps;
}
dmn->info.caps.num_vports = dmn->info.caps.num_esw_ports - 1;
return 0;
free_vports_caps:
kfree(dmn->info.caps.vports_caps);
dmn->info.caps.vports_caps = NULL;
return ret;
}
static int dr_domain_caps_init(struct mlx5_core_dev *mdev,
struct mlx5dr_domain *dmn)
{
struct mlx5dr_cmd_vport_cap *vport_cap;
int ret;
if (MLX5_CAP_GEN(mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) {
mlx5dr_err(dmn, "Failed to allocate domain, bad link type\n");
return -EOPNOTSUPP;
}
dmn->info.caps.num_esw_ports = mlx5_eswitch_get_total_vports(mdev);
ret = mlx5dr_cmd_query_device(mdev, &dmn->info.caps);
if (ret)
return ret;
ret = dr_domain_query_fdb_caps(mdev, dmn);
if (ret)
return ret;
switch (dmn->type) {
case MLX5DR_DOMAIN_TYPE_NIC_RX:
if (!dmn->info.caps.rx_sw_owner)
return -ENOTSUPP;
dmn->info.supp_sw_steering = true;
dmn->info.rx.ste_type = MLX5DR_STE_TYPE_RX;
dmn->info.rx.default_icm_addr = dmn->info.caps.nic_rx_drop_address;
dmn->info.rx.drop_icm_addr = dmn->info.caps.nic_rx_drop_address;
break;
case MLX5DR_DOMAIN_TYPE_NIC_TX:
if (!dmn->info.caps.tx_sw_owner)
return -ENOTSUPP;
dmn->info.supp_sw_steering = true;
dmn->info.tx.ste_type = MLX5DR_STE_TYPE_TX;
dmn->info.tx.default_icm_addr = dmn->info.caps.nic_tx_allow_address;
dmn->info.tx.drop_icm_addr = dmn->info.caps.nic_tx_drop_address;
break;
case MLX5DR_DOMAIN_TYPE_FDB:
if (!dmn->info.caps.eswitch_manager)
return -ENOTSUPP;
if (!dmn->info.caps.fdb_sw_owner)
return -ENOTSUPP;
dmn->info.rx.ste_type = MLX5DR_STE_TYPE_RX;
dmn->info.tx.ste_type = MLX5DR_STE_TYPE_TX;
vport_cap = mlx5dr_get_vport_cap(&dmn->info.caps, 0);
if (!vport_cap) {
mlx5dr_err(dmn, "Failed to get esw manager vport\n");
return -ENOENT;
}
dmn->info.supp_sw_steering = true;
dmn->info.tx.default_icm_addr = vport_cap->icm_address_tx;
dmn->info.rx.default_icm_addr = vport_cap->icm_address_rx;
dmn->info.rx.drop_icm_addr = dmn->info.caps.esw_rx_drop_address;
dmn->info.tx.drop_icm_addr = dmn->info.caps.esw_tx_drop_address;
break;
default:
mlx5dr_err(dmn, "Invalid domain\n");
ret = -EINVAL;
break;
}
return ret;
}
static void dr_domain_caps_uninit(struct mlx5dr_domain *dmn)
{
kfree(dmn->info.caps.vports_caps);
}
struct mlx5dr_domain *
mlx5dr_domain_create(struct mlx5_core_dev *mdev, enum mlx5dr_domain_type type)
{
struct mlx5dr_domain *dmn;
int ret;
if (type > MLX5DR_DOMAIN_TYPE_FDB)
return NULL;
dmn = kzalloc(sizeof(*dmn), GFP_KERNEL);
if (!dmn)
return NULL;
dmn->mdev = mdev;
dmn->type = type;
refcount_set(&dmn->refcount, 1);
mutex_init(&dmn->mutex);
if (dr_domain_caps_init(mdev, dmn)) {
mlx5dr_err(dmn, "Failed init domain, no caps\n");
goto free_domain;
}
dmn->info.max_log_action_icm_sz = DR_CHUNK_SIZE_4K;
dmn->info.max_log_sw_icm_sz = min_t(u32, DR_CHUNK_SIZE_1024K,
dmn->info.caps.log_icm_size);
if (!dmn->info.supp_sw_steering) {
mlx5dr_err(dmn, "SW steering is not supported\n");
goto uninit_caps;
}
/* Allocate resources */
ret = dr_domain_init_resources(dmn);
if (ret) {
mlx5dr_err(dmn, "Failed init domain resources\n");
goto uninit_caps;
}
ret = dr_domain_init_cache(dmn);
if (ret) {
mlx5dr_err(dmn, "Failed initialize domain cache\n");
goto uninit_resourses;
}
return dmn;
uninit_resourses:
dr_domain_uninit_resources(dmn);
uninit_caps:
dr_domain_caps_uninit(dmn);
free_domain:
kfree(dmn);
return NULL;
}
/* Assure synchronization of the device steering tables with updates made by SW
* insertion.
*/
int mlx5dr_domain_sync(struct mlx5dr_domain *dmn, u32 flags)
{
int ret = 0;
if (flags & MLX5DR_DOMAIN_SYNC_FLAGS_SW) {
mutex_lock(&dmn->mutex);
ret = mlx5dr_send_ring_force_drain(dmn);
mutex_unlock(&dmn->mutex);
if (ret) {
mlx5dr_err(dmn, "Force drain failed flags: %d, ret: %d\n",
flags, ret);
return ret;
}
}
if (flags & MLX5DR_DOMAIN_SYNC_FLAGS_HW)
ret = mlx5dr_cmd_sync_steering(dmn->mdev);
return ret;
}
int mlx5dr_domain_destroy(struct mlx5dr_domain *dmn)
{
if (refcount_read(&dmn->refcount) > 1)
return -EBUSY;
/* make sure resources are not used by the hardware */
mlx5dr_cmd_sync_steering(dmn->mdev);
dr_domain_uninit_cache(dmn);
dr_domain_uninit_resources(dmn);
dr_domain_caps_uninit(dmn);
mutex_destroy(&dmn->mutex);
kfree(dmn);
return 0;
}
void mlx5dr_domain_set_peer(struct mlx5dr_domain *dmn,
struct mlx5dr_domain *peer_dmn)
{
mutex_lock(&dmn->mutex);
if (dmn->peer_dmn)
refcount_dec(&dmn->peer_dmn->refcount);
dmn->peer_dmn = peer_dmn;
if (dmn->peer_dmn)
refcount_inc(&dmn->peer_dmn->refcount);
mutex_unlock(&dmn->mutex);
}
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