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tegrakernel/kernel/kernel-4.9/drivers/net/ethernet/intel/i40e/i40e_client.c

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/*******************************************************************************
*
* Intel Ethernet Controller XL710 Family Linux Driver
* Copyright(c) 2013 - 2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
******************************************************************************/
#include <linux/list.h>
#include <linux/errno.h>
#include "i40e.h"
#include "i40e_prototype.h"
#include "i40e_client.h"
static const char i40e_client_interface_version_str[] = I40E_CLIENT_VERSION_STR;
static LIST_HEAD(i40e_devices);
static DEFINE_MUTEX(i40e_device_mutex);
static LIST_HEAD(i40e_clients);
static DEFINE_MUTEX(i40e_client_mutex);
static LIST_HEAD(i40e_client_instances);
static DEFINE_MUTEX(i40e_client_instance_mutex);
static int i40e_client_virtchnl_send(struct i40e_info *ldev,
struct i40e_client *client,
u32 vf_id, u8 *msg, u16 len);
static int i40e_client_setup_qvlist(struct i40e_info *ldev,
struct i40e_client *client,
struct i40e_qvlist_info *qvlist_info);
static void i40e_client_request_reset(struct i40e_info *ldev,
struct i40e_client *client,
u32 reset_level);
static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
struct i40e_client *client,
bool is_vf, u32 vf_id,
u32 flag, u32 valid_flag);
static struct i40e_ops i40e_lan_ops = {
.virtchnl_send = i40e_client_virtchnl_send,
.setup_qvlist = i40e_client_setup_qvlist,
.request_reset = i40e_client_request_reset,
.update_vsi_ctxt = i40e_client_update_vsi_ctxt,
};
/**
* i40e_client_type_to_vsi_type - convert client type to vsi type
* @client_type: the i40e_client type
*
* returns the related vsi type value
**/
static
enum i40e_vsi_type i40e_client_type_to_vsi_type(enum i40e_client_type type)
{
switch (type) {
case I40E_CLIENT_IWARP:
return I40E_VSI_IWARP;
case I40E_CLIENT_VMDQ2:
return I40E_VSI_VMDQ2;
default:
pr_err("i40e: Client type unknown\n");
return I40E_VSI_TYPE_UNKNOWN;
}
}
/**
* i40e_client_get_params - Get the params that can change at runtime
* @vsi: the VSI with the message
* @param: clinet param struct
*
**/
static
int i40e_client_get_params(struct i40e_vsi *vsi, struct i40e_params *params)
{
struct i40e_dcbx_config *dcb_cfg = &vsi->back->hw.local_dcbx_config;
int i = 0;
for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
u8 tc = dcb_cfg->etscfg.prioritytable[i];
u16 qs_handle;
/* If TC is not enabled for VSI use TC0 for UP */
if (!(vsi->tc_config.enabled_tc & BIT(tc)))
tc = 0;
qs_handle = le16_to_cpu(vsi->info.qs_handle[tc]);
params->qos.prio_qos[i].tc = tc;
params->qos.prio_qos[i].qs_handle = qs_handle;
if (qs_handle == I40E_AQ_VSI_QS_HANDLE_INVALID) {
dev_err(&vsi->back->pdev->dev, "Invalid queue set handle for TC = %d, vsi id = %d\n",
tc, vsi->id);
return -EINVAL;
}
}
params->mtu = vsi->netdev->mtu;
return 0;
}
/**
* i40e_notify_client_of_vf_msg - call the client vf message callback
* @vsi: the VSI with the message
* @vf_id: the absolute VF id that sent the message
* @msg: message buffer
* @len: length of the message
*
* If there is a client to this VSI, call the client
**/
void
i40e_notify_client_of_vf_msg(struct i40e_vsi *vsi, u32 vf_id, u8 *msg, u16 len)
{
struct i40e_client_instance *cdev;
if (!vsi)
return;
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry(cdev, &i40e_client_instances, list) {
if (cdev->lan_info.pf == vsi->back) {
if (!cdev->client ||
!cdev->client->ops ||
!cdev->client->ops->virtchnl_receive) {
dev_dbg(&vsi->back->pdev->dev,
"Cannot locate client instance virtual channel receive routine\n");
continue;
}
if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,
&cdev->state)) {
dev_dbg(&vsi->back->pdev->dev, "Client is not open, abort virtchnl_receive\n");
continue;
}
cdev->client->ops->virtchnl_receive(&cdev->lan_info,
cdev->client,
vf_id, msg, len);
}
}
mutex_unlock(&i40e_client_instance_mutex);
}
/**
* i40e_notify_client_of_l2_param_changes - call the client notify callback
* @vsi: the VSI with l2 param changes
*
* If there is a client to this VSI, call the client
**/
void i40e_notify_client_of_l2_param_changes(struct i40e_vsi *vsi)
{
struct i40e_client_instance *cdev;
struct i40e_params params;
if (!vsi)
return;
memset(&params, 0, sizeof(params));
i40e_client_get_params(vsi, &params);
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry(cdev, &i40e_client_instances, list) {
if (cdev->lan_info.pf == vsi->back) {
if (!cdev->client ||
!cdev->client->ops ||
!cdev->client->ops->l2_param_change) {
dev_dbg(&vsi->back->pdev->dev,
"Cannot locate client instance l2_param_change routine\n");
continue;
}
if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,
&cdev->state)) {
dev_dbg(&vsi->back->pdev->dev, "Client is not open, abort l2 param change\n");
continue;
}
cdev->lan_info.params = params;
cdev->client->ops->l2_param_change(&cdev->lan_info,
cdev->client,
&params);
}
}
mutex_unlock(&i40e_client_instance_mutex);
}
/**
* i40e_notify_client_of_netdev_open - call the client open callback
* @vsi: the VSI with netdev opened
*
* If there is a client to this netdev, call the client with open
**/
void i40e_notify_client_of_netdev_open(struct i40e_vsi *vsi)
{
struct i40e_client_instance *cdev;
int ret = 0;
if (!vsi)
return;
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry(cdev, &i40e_client_instances, list) {
if (cdev->lan_info.netdev == vsi->netdev) {
if (!cdev->client ||
!cdev->client->ops || !cdev->client->ops->open) {
dev_dbg(&vsi->back->pdev->dev,
"Cannot locate client instance open routine\n");
continue;
}
if (!(test_bit(__I40E_CLIENT_INSTANCE_OPENED,
&cdev->state))) {
ret = cdev->client->ops->open(&cdev->lan_info,
cdev->client);
if (!ret)
set_bit(__I40E_CLIENT_INSTANCE_OPENED,
&cdev->state);
}
}
}
mutex_unlock(&i40e_client_instance_mutex);
}
/**
* i40e_client_release_qvlist
* @ldev: pointer to L2 context.
*
**/
static void i40e_client_release_qvlist(struct i40e_info *ldev)
{
struct i40e_qvlist_info *qvlist_info = ldev->qvlist_info;
u32 i;
if (!ldev->qvlist_info)
return;
for (i = 0; i < qvlist_info->num_vectors; i++) {
struct i40e_pf *pf = ldev->pf;
struct i40e_qv_info *qv_info;
u32 reg_idx;
qv_info = &qvlist_info->qv_info[i];
if (!qv_info)
continue;
reg_idx = I40E_PFINT_LNKLSTN(qv_info->v_idx - 1);
wr32(&pf->hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
}
kfree(ldev->qvlist_info);
ldev->qvlist_info = NULL;
}
/**
* i40e_notify_client_of_netdev_close - call the client close callback
* @vsi: the VSI with netdev closed
* @reset: true when close called due to a reset pending
*
* If there is a client to this netdev, call the client with close
**/
void i40e_notify_client_of_netdev_close(struct i40e_vsi *vsi, bool reset)
{
struct i40e_client_instance *cdev;
if (!vsi)
return;
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry(cdev, &i40e_client_instances, list) {
if (cdev->lan_info.netdev == vsi->netdev) {
if (!cdev->client ||
!cdev->client->ops || !cdev->client->ops->close) {
dev_dbg(&vsi->back->pdev->dev,
"Cannot locate client instance close routine\n");
continue;
}
cdev->client->ops->close(&cdev->lan_info, cdev->client,
reset);
i40e_client_release_qvlist(&cdev->lan_info);
}
}
mutex_unlock(&i40e_client_instance_mutex);
}
/**
* i40e_notify_client_of_vf_reset - call the client vf reset callback
* @pf: PF device pointer
* @vf_id: asolute id of VF being reset
*
* If there is a client attached to this PF, notify when a VF is reset
**/
void i40e_notify_client_of_vf_reset(struct i40e_pf *pf, u32 vf_id)
{
struct i40e_client_instance *cdev;
if (!pf)
return;
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry(cdev, &i40e_client_instances, list) {
if (cdev->lan_info.pf == pf) {
if (!cdev->client ||
!cdev->client->ops ||
!cdev->client->ops->vf_reset) {
dev_dbg(&pf->pdev->dev,
"Cannot locate client instance VF reset routine\n");
continue;
}
if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,
&cdev->state)) {
dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-reset\n");
continue;
}
cdev->client->ops->vf_reset(&cdev->lan_info,
cdev->client, vf_id);
}
}
mutex_unlock(&i40e_client_instance_mutex);
}
/**
* i40e_notify_client_of_vf_enable - call the client vf notification callback
* @pf: PF device pointer
* @num_vfs: the number of VFs currently enabled, 0 for disable
*
* If there is a client attached to this PF, call its VF notification routine
**/
void i40e_notify_client_of_vf_enable(struct i40e_pf *pf, u32 num_vfs)
{
struct i40e_client_instance *cdev;
if (!pf)
return;
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry(cdev, &i40e_client_instances, list) {
if (cdev->lan_info.pf == pf) {
if (!cdev->client ||
!cdev->client->ops ||
!cdev->client->ops->vf_enable) {
dev_dbg(&pf->pdev->dev,
"Cannot locate client instance VF enable routine\n");
continue;
}
if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,
&cdev->state)) {
dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-enable\n");
continue;
}
cdev->client->ops->vf_enable(&cdev->lan_info,
cdev->client, num_vfs);
}
}
mutex_unlock(&i40e_client_instance_mutex);
}
/**
* i40e_vf_client_capable - ask the client if it likes the specified VF
* @pf: PF device pointer
* @vf_id: the VF in question
*
* If there is a client of the specified type attached to this PF, call
* its vf_capable routine
**/
int i40e_vf_client_capable(struct i40e_pf *pf, u32 vf_id,
enum i40e_client_type type)
{
struct i40e_client_instance *cdev;
int capable = false;
if (!pf)
return false;
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry(cdev, &i40e_client_instances, list) {
if (cdev->lan_info.pf == pf) {
if (!cdev->client ||
!cdev->client->ops ||
!cdev->client->ops->vf_capable ||
!(cdev->client->type == type)) {
dev_dbg(&pf->pdev->dev,
"Cannot locate client instance VF capability routine\n");
continue;
}
if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED,
&cdev->state)) {
dev_dbg(&pf->pdev->dev, "Client is not open, abort vf-capable\n");
continue;
}
capable = cdev->client->ops->vf_capable(&cdev->lan_info,
cdev->client,
vf_id);
break;
}
}
mutex_unlock(&i40e_client_instance_mutex);
return capable;
}
/**
* i40e_vsi_lookup - finds a matching VSI from the PF list starting at start_vsi
* @pf: board private structure
* @type: vsi type
* @start_vsi: a VSI pointer from where to start the search
*
* Returns non NULL on success or NULL for failure
**/
struct i40e_vsi *i40e_vsi_lookup(struct i40e_pf *pf,
enum i40e_vsi_type type,
struct i40e_vsi *start_vsi)
{
struct i40e_vsi *vsi;
int i = 0;
if (start_vsi) {
for (i = 0; i < pf->num_alloc_vsi; i++) {
vsi = pf->vsi[i];
if (vsi == start_vsi)
break;
}
}
for (; i < pf->num_alloc_vsi; i++) {
vsi = pf->vsi[i];
if (vsi && vsi->type == type)
return vsi;
}
return NULL;
}
/**
* i40e_client_add_instance - add a client instance struct to the instance list
* @pf: pointer to the board struct
* @client: pointer to a client struct in the client list.
* @existing: if there was already an existing instance
*
* Returns cdev ptr on success or if already exists, NULL on failure
**/
static
struct i40e_client_instance *i40e_client_add_instance(struct i40e_pf *pf,
struct i40e_client *client,
bool *existing)
{
struct i40e_client_instance *cdev;
struct netdev_hw_addr *mac = NULL;
struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry(cdev, &i40e_client_instances, list) {
if ((cdev->lan_info.pf == pf) && (cdev->client == client)) {
*existing = true;
goto out;
}
}
cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
if (!cdev)
goto out;
cdev->lan_info.pf = (void *)pf;
cdev->lan_info.netdev = vsi->netdev;
cdev->lan_info.pcidev = pf->pdev;
cdev->lan_info.fid = pf->hw.pf_id;
cdev->lan_info.ftype = I40E_CLIENT_FTYPE_PF;
cdev->lan_info.hw_addr = pf->hw.hw_addr;
cdev->lan_info.ops = &i40e_lan_ops;
cdev->lan_info.version.major = I40E_CLIENT_VERSION_MAJOR;
cdev->lan_info.version.minor = I40E_CLIENT_VERSION_MINOR;
cdev->lan_info.version.build = I40E_CLIENT_VERSION_BUILD;
cdev->lan_info.fw_maj_ver = pf->hw.aq.fw_maj_ver;
cdev->lan_info.fw_min_ver = pf->hw.aq.fw_min_ver;
cdev->lan_info.fw_build = pf->hw.aq.fw_build;
set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state);
if (i40e_client_get_params(vsi, &cdev->lan_info.params)) {
kfree(cdev);
cdev = NULL;
goto out;
}
cdev->lan_info.msix_count = pf->num_iwarp_msix;
cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector];
mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list,
struct netdev_hw_addr, list);
if (mac)
ether_addr_copy(cdev->lan_info.lanmac, mac->addr);
else
dev_err(&pf->pdev->dev, "MAC address list is empty!\n");
cdev->client = client;
INIT_LIST_HEAD(&cdev->list);
list_add(&cdev->list, &i40e_client_instances);
out:
mutex_unlock(&i40e_client_instance_mutex);
return cdev;
}
/**
* i40e_client_del_instance - removes a client instance from the list
* @pf: pointer to the board struct
*
* Returns 0 on success or non-0 on error
**/
static
int i40e_client_del_instance(struct i40e_pf *pf, struct i40e_client *client)
{
struct i40e_client_instance *cdev, *tmp;
int ret = -ENODEV;
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry_safe(cdev, tmp, &i40e_client_instances, list) {
if ((cdev->lan_info.pf != pf) || (cdev->client != client))
continue;
dev_info(&pf->pdev->dev, "Deleted instance of Client %s, of dev %d bus=0x%02x func=0x%02x)\n",
client->name, pf->hw.pf_id,
pf->hw.bus.device, pf->hw.bus.func);
list_del(&cdev->list);
kfree(cdev);
ret = 0;
break;
}
mutex_unlock(&i40e_client_instance_mutex);
return ret;
}
/**
* i40e_client_subtask - client maintenance work
* @pf: board private structure
**/
void i40e_client_subtask(struct i40e_pf *pf)
{
struct i40e_client_instance *cdev;
struct i40e_client *client;
bool existing = false;
int ret = 0;
if (!(pf->flags & I40E_FLAG_SERVICE_CLIENT_REQUESTED))
return;
pf->flags &= ~I40E_FLAG_SERVICE_CLIENT_REQUESTED;
/* If we're down or resetting, just bail */
if (test_bit(__I40E_DOWN, &pf->state) ||
test_bit(__I40E_CONFIG_BUSY, &pf->state))
return;
/* Check client state and instantiate client if client registered */
mutex_lock(&i40e_client_mutex);
list_for_each_entry(client, &i40e_clients, list) {
/* first check client is registered */
if (!test_bit(__I40E_CLIENT_REGISTERED, &client->state))
continue;
/* Do we also need the LAN VSI to be up, to create instance */
if (!(client->flags & I40E_CLIENT_FLAGS_LAUNCH_ON_PROBE)) {
/* check if L2 VSI is up, if not we are not ready */
if (test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
continue;
} else {
dev_warn(&pf->pdev->dev, "This client %s is being instanciated at probe\n",
client->name);
}
/* Add the client instance to the instance list */
cdev = i40e_client_add_instance(pf, client, &existing);
if (!cdev)
continue;
if (!existing) {
/* Also up the ref_cnt for no. of instances of this
* client.
*/
atomic_inc(&client->ref_cnt);
dev_info(&pf->pdev->dev, "Added instance of Client %s to PF%d bus=0x%02x func=0x%02x\n",
client->name, pf->hw.pf_id,
pf->hw.bus.device, pf->hw.bus.func);
}
mutex_lock(&i40e_client_instance_mutex);
/* Send an Open request to the client */
atomic_inc(&cdev->ref_cnt);
if (client->ops && client->ops->open)
ret = client->ops->open(&cdev->lan_info, client);
atomic_dec(&cdev->ref_cnt);
if (!ret) {
set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
} else {
/* remove client instance */
mutex_unlock(&i40e_client_instance_mutex);
i40e_client_del_instance(pf, client);
atomic_dec(&client->ref_cnt);
continue;
}
mutex_unlock(&i40e_client_instance_mutex);
}
mutex_unlock(&i40e_client_mutex);
}
/**
* i40e_lan_add_device - add a lan device struct to the list of lan devices
* @pf: pointer to the board struct
*
* Returns 0 on success or none 0 on error
**/
int i40e_lan_add_device(struct i40e_pf *pf)
{
struct i40e_device *ldev;
int ret = 0;
mutex_lock(&i40e_device_mutex);
list_for_each_entry(ldev, &i40e_devices, list) {
if (ldev->pf == pf) {
ret = -EEXIST;
goto out;
}
}
ldev = kzalloc(sizeof(*ldev), GFP_KERNEL);
if (!ldev) {
ret = -ENOMEM;
goto out;
}
ldev->pf = pf;
INIT_LIST_HEAD(&ldev->list);
list_add(&ldev->list, &i40e_devices);
dev_info(&pf->pdev->dev, "Added LAN device PF%d bus=0x%02x func=0x%02x\n",
pf->hw.pf_id, pf->hw.bus.device, pf->hw.bus.func);
/* Since in some cases register may have happened before a device gets
* added, we can schedule a subtask to go initiate the clients if
* they can be launched at probe time.
*/
pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
i40e_service_event_schedule(pf);
out:
mutex_unlock(&i40e_device_mutex);
return ret;
}
/**
* i40e_lan_del_device - removes a lan device from the device list
* @pf: pointer to the board struct
*
* Returns 0 on success or non-0 on error
**/
int i40e_lan_del_device(struct i40e_pf *pf)
{
struct i40e_device *ldev, *tmp;
int ret = -ENODEV;
mutex_lock(&i40e_device_mutex);
list_for_each_entry_safe(ldev, tmp, &i40e_devices, list) {
if (ldev->pf == pf) {
dev_info(&pf->pdev->dev, "Deleted LAN device PF%d bus=0x%02x func=0x%02x\n",
pf->hw.pf_id, pf->hw.bus.device,
pf->hw.bus.func);
list_del(&ldev->list);
kfree(ldev);
ret = 0;
break;
}
}
mutex_unlock(&i40e_device_mutex);
return ret;
}
/**
* i40e_client_release - release client specific resources
* @client: pointer to the registered client
*
* Return 0 on success or < 0 on error
**/
static int i40e_client_release(struct i40e_client *client)
{
struct i40e_client_instance *cdev, *tmp;
struct i40e_pf *pf;
int ret = 0;
LIST_HEAD(cdevs_tmp);
mutex_lock(&i40e_client_instance_mutex);
list_for_each_entry_safe(cdev, tmp, &i40e_client_instances, list) {
if (strncmp(cdev->client->name, client->name,
I40E_CLIENT_STR_LENGTH))
continue;
pf = (struct i40e_pf *)cdev->lan_info.pf;
if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) {
if (atomic_read(&cdev->ref_cnt) > 0) {
ret = I40E_ERR_NOT_READY;
goto out;
}
if (client->ops && client->ops->close)
client->ops->close(&cdev->lan_info, client,
false);
i40e_client_release_qvlist(&cdev->lan_info);
clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
dev_warn(&pf->pdev->dev,
"Client %s instance for PF id %d closed\n",
client->name, pf->hw.pf_id);
}
/* delete the client instance from the list */
list_move(&cdev->list, &cdevs_tmp);
atomic_dec(&client->ref_cnt);
dev_info(&pf->pdev->dev, "Deleted client instance of Client %s\n",
client->name);
}
out:
mutex_unlock(&i40e_client_instance_mutex);
/* free the client device and release its vsi */
list_for_each_entry_safe(cdev, tmp, &cdevs_tmp, list) {
kfree(cdev);
}
return ret;
}
/**
* i40e_client_prepare - prepare client specific resources
* @client: pointer to the registered client
*
* Return 0 on success or < 0 on error
**/
static int i40e_client_prepare(struct i40e_client *client)
{
struct i40e_device *ldev;
struct i40e_pf *pf;
int ret = 0;
mutex_lock(&i40e_device_mutex);
list_for_each_entry(ldev, &i40e_devices, list) {
pf = ldev->pf;
/* Start the client subtask */
pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
i40e_service_event_schedule(pf);
}
mutex_unlock(&i40e_device_mutex);
return ret;
}
/**
* i40e_client_virtchnl_send - TBD
* @ldev: pointer to L2 context
* @client: Client pointer
* @vf_id: absolute VF identifier
* @msg: message buffer
* @len: length of message buffer
*
* Return 0 on success or < 0 on error
**/
static int i40e_client_virtchnl_send(struct i40e_info *ldev,
struct i40e_client *client,
u32 vf_id, u8 *msg, u16 len)
{
struct i40e_pf *pf = ldev->pf;
struct i40e_hw *hw = &pf->hw;
i40e_status err;
err = i40e_aq_send_msg_to_vf(hw, vf_id, I40E_VIRTCHNL_OP_IWARP,
0, msg, len, NULL);
if (err)
dev_err(&pf->pdev->dev, "Unable to send iWarp message to VF, error %d, aq status %d\n",
err, hw->aq.asq_last_status);
return err;
}
/**
* i40e_client_setup_qvlist
* @ldev: pointer to L2 context.
* @client: Client pointer.
* @qv_info: queue and vector list
*
* Return 0 on success or < 0 on error
**/
static int i40e_client_setup_qvlist(struct i40e_info *ldev,
struct i40e_client *client,
struct i40e_qvlist_info *qvlist_info)
{
struct i40e_pf *pf = ldev->pf;
struct i40e_hw *hw = &pf->hw;
struct i40e_qv_info *qv_info;
u32 v_idx, i, reg_idx, reg;
u32 size;
size = sizeof(struct i40e_qvlist_info) +
(sizeof(struct i40e_qv_info) * (qvlist_info->num_vectors - 1));
ldev->qvlist_info = kzalloc(size, GFP_KERNEL);
ldev->qvlist_info->num_vectors = qvlist_info->num_vectors;
for (i = 0; i < qvlist_info->num_vectors; i++) {
qv_info = &qvlist_info->qv_info[i];
if (!qv_info)
continue;
v_idx = qv_info->v_idx;
/* Validate vector id belongs to this client */
if ((v_idx >= (pf->iwarp_base_vector + pf->num_iwarp_msix)) ||
(v_idx < pf->iwarp_base_vector))
goto err;
ldev->qvlist_info->qv_info[i] = *qv_info;
reg_idx = I40E_PFINT_LNKLSTN(v_idx - 1);
if (qv_info->ceq_idx == I40E_QUEUE_INVALID_IDX) {
/* Special case - No CEQ mapped on this vector */
wr32(hw, reg_idx, I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK);
} else {
reg = (qv_info->ceq_idx &
I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) |
(I40E_QUEUE_TYPE_PE_CEQ <<
I40E_PFINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
wr32(hw, reg_idx, reg);
reg = (I40E_PFINT_CEQCTL_CAUSE_ENA_MASK |
(v_idx << I40E_PFINT_CEQCTL_MSIX_INDX_SHIFT) |
(qv_info->itr_idx <<
I40E_PFINT_CEQCTL_ITR_INDX_SHIFT) |
(I40E_QUEUE_END_OF_LIST <<
I40E_PFINT_CEQCTL_NEXTQ_INDX_SHIFT));
wr32(hw, I40E_PFINT_CEQCTL(qv_info->ceq_idx), reg);
}
if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
reg = (I40E_PFINT_AEQCTL_CAUSE_ENA_MASK |
(v_idx << I40E_PFINT_AEQCTL_MSIX_INDX_SHIFT) |
(qv_info->itr_idx <<
I40E_PFINT_AEQCTL_ITR_INDX_SHIFT));
wr32(hw, I40E_PFINT_AEQCTL, reg);
}
}
/* Mitigate sync problems with iwarp VF driver */
i40e_flush(hw);
return 0;
err:
kfree(ldev->qvlist_info);
ldev->qvlist_info = NULL;
return -EINVAL;
}
/**
* i40e_client_request_reset
* @ldev: pointer to L2 context.
* @client: Client pointer.
* @level: reset level
**/
static void i40e_client_request_reset(struct i40e_info *ldev,
struct i40e_client *client,
u32 reset_level)
{
struct i40e_pf *pf = ldev->pf;
switch (reset_level) {
case I40E_CLIENT_RESET_LEVEL_PF:
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
break;
case I40E_CLIENT_RESET_LEVEL_CORE:
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
break;
default:
dev_warn(&pf->pdev->dev,
"Client %s instance for PF id %d request an unsupported reset: %d.\n",
client->name, pf->hw.pf_id, reset_level);
break;
}
i40e_service_event_schedule(pf);
}
/**
* i40e_client_update_vsi_ctxt
* @ldev: pointer to L2 context.
* @client: Client pointer.
* @is_vf: if this for the VF
* @vf_id: if is_vf true this carries the vf_id
* @flag: Any device level setting that needs to be done for PE
* @valid_flag: Bits in this match up and enable changing of flag bits
*
* Return 0 on success or < 0 on error
**/
static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev,
struct i40e_client *client,
bool is_vf, u32 vf_id,
u32 flag, u32 valid_flag)
{
struct i40e_pf *pf = ldev->pf;
struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
struct i40e_vsi_context ctxt;
bool update = true;
i40e_status err;
/* TODO: for now do not allow setting VF's VSI setting */
if (is_vf)
return -EINVAL;
ctxt.seid = pf->main_vsi_seid;
ctxt.pf_num = pf->hw.pf_id;
err = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
ctxt.flags = I40E_AQ_VSI_TYPE_PF;
if (err) {
dev_info(&pf->pdev->dev,
"couldn't get PF vsi config, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, err),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
return -ENOENT;
}
if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE) &&
(flag & I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE)) {
ctxt.info.valid_sections =
cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
} else if ((valid_flag & I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE) &&
!(flag & I40E_CLIENT_VSI_FLAG_TCP_PACKET_ENABLE)) {
ctxt.info.valid_sections =
cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
ctxt.info.queueing_opt_flags &= ~I40E_AQ_VSI_QUE_OPT_TCP_ENA;
} else {
update = false;
dev_warn(&pf->pdev->dev,
"Client %s instance for PF id %d request an unsupported Config: %x.\n",
client->name, pf->hw.pf_id, flag);
}
if (update) {
err = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (err) {
dev_info(&pf->pdev->dev,
"update VSI ctxt for PE failed, err %s aq_err %s\n",
i40e_stat_str(&pf->hw, err),
i40e_aq_str(&pf->hw,
pf->hw.aq.asq_last_status));
}
}
return err;
}
/**
* i40e_register_client - Register a i40e client driver with the L2 driver
* @client: pointer to the i40e_client struct
*
* Returns 0 on success or non-0 on error
**/
int i40e_register_client(struct i40e_client *client)
{
int ret = 0;
enum i40e_vsi_type vsi_type;
if (!client) {
ret = -EIO;
goto out;
}
if (strlen(client->name) == 0) {
pr_info("i40e: Failed to register client with no name\n");
ret = -EIO;
goto out;
}
mutex_lock(&i40e_client_mutex);
if (i40e_client_is_registered(client)) {
pr_info("i40e: Client %s has already been registered!\n",
client->name);
mutex_unlock(&i40e_client_mutex);
ret = -EEXIST;
goto out;
}
if ((client->version.major != I40E_CLIENT_VERSION_MAJOR) ||
(client->version.minor != I40E_CLIENT_VERSION_MINOR)) {
pr_info("i40e: Failed to register client %s due to mismatched client interface version\n",
client->name);
pr_info("Client is using version: %02d.%02d.%02d while LAN driver supports %s\n",
client->version.major, client->version.minor,
client->version.build,
i40e_client_interface_version_str);
mutex_unlock(&i40e_client_mutex);
ret = -EIO;
goto out;
}
vsi_type = i40e_client_type_to_vsi_type(client->type);
if (vsi_type == I40E_VSI_TYPE_UNKNOWN) {
pr_info("i40e: Failed to register client %s due to unknown client type %d\n",
client->name, client->type);
mutex_unlock(&i40e_client_mutex);
ret = -EIO;
goto out;
}
list_add(&client->list, &i40e_clients);
set_bit(__I40E_CLIENT_REGISTERED, &client->state);
mutex_unlock(&i40e_client_mutex);
if (i40e_client_prepare(client)) {
ret = -EIO;
goto out;
}
pr_info("i40e: Registered client %s with return code %d\n",
client->name, ret);
out:
return ret;
}
EXPORT_SYMBOL(i40e_register_client);
/**
* i40e_unregister_client - Unregister a i40e client driver with the L2 driver
* @client: pointer to the i40e_client struct
*
* Returns 0 on success or non-0 on error
**/
int i40e_unregister_client(struct i40e_client *client)
{
int ret = 0;
/* When a unregister request comes through we would have to send
* a close for each of the client instances that were opened.
* client_release function is called to handle this.
*/
mutex_lock(&i40e_client_mutex);
if (!client || i40e_client_release(client)) {
ret = -EIO;
goto out;
}
/* TODO: check if device is in reset, or if that matters? */
if (!i40e_client_is_registered(client)) {
pr_info("i40e: Client %s has not been registered\n",
client->name);
ret = -ENODEV;
goto out;
}
if (atomic_read(&client->ref_cnt) == 0) {
clear_bit(__I40E_CLIENT_REGISTERED, &client->state);
list_del(&client->list);
pr_info("i40e: Unregistered client %s with return code %d\n",
client->name, ret);
} else {
ret = I40E_ERR_NOT_READY;
pr_err("i40e: Client %s failed unregister - client has open instances\n",
client->name);
}
out:
mutex_unlock(&i40e_client_mutex);
return ret;
}
EXPORT_SYMBOL(i40e_unregister_client);
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