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// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
/* Copyright (c) 2015 - 2021 Intel Corporation */
#include "main.h"
#include "i40iw_hw.h"
#include <linux/net/intel/i40e_client.h>
static struct i40e_client i40iw_client;
/**
* i40iw_l2param_change - handle mss change
* @cdev_info: parent lan device information structure with data/ops
* @client: client for parameter change
* @params: new parameters from L2
*/
static void i40iw_l2param_change(struct i40e_info *cdev_info,
struct i40e_client *client,
struct i40e_params *params)
{
struct irdma_l2params l2params = {};
struct irdma_device *iwdev;
struct ib_device *ibdev;
ibdev = ib_device_get_by_netdev(cdev_info->netdev, RDMA_DRIVER_IRDMA);
if (!ibdev)
return;
iwdev = to_iwdev(ibdev);
if (iwdev->vsi.mtu != params->mtu) {
l2params.mtu_changed = true;
l2params.mtu = params->mtu;
}
irdma_change_l2params(&iwdev->vsi, &l2params);
ib_device_put(ibdev);
}
/**
* i40iw_close - client interface operation close for iwarp/uda device
* @cdev_info: parent lan device information structure with data/ops
* @client: client to close
* @reset: flag to indicate close on reset
*
* Called by the lan driver during the processing of client unregister
* Destroy and clean up the driver resources
*/
static void i40iw_close(struct i40e_info *cdev_info, struct i40e_client *client,
bool reset)
{
struct irdma_device *iwdev;
struct ib_device *ibdev;
ibdev = ib_device_get_by_netdev(cdev_info->netdev, RDMA_DRIVER_IRDMA);
if (WARN_ON(!ibdev))
return;
iwdev = to_iwdev(ibdev);
if (reset)
iwdev->reset = true;
iwdev->iw_status = 0;
irdma_port_ibevent(iwdev);
ib_unregister_device_and_put(ibdev);
pr_debug("INIT: Gen1 PF[%d] close complete\n", PCI_FUNC(cdev_info->pcidev->devfn));
}
static void i40iw_request_reset(struct irdma_pci_f *rf)
{
struct i40e_info *cdev_info = rf->cdev;
cdev_info->ops->request_reset(cdev_info, &i40iw_client, 1);
}
static void i40iw_fill_device_info(struct irdma_device *iwdev, struct i40e_info *cdev_info)
{
struct irdma_pci_f *rf = iwdev->rf;
rf->rdma_ver = IRDMA_GEN_1;
rf->gen_ops.request_reset = i40iw_request_reset;
rf->pcidev = cdev_info->pcidev;
rf->hw.hw_addr = cdev_info->hw_addr;
rf->cdev = cdev_info;
rf->msix_count = cdev_info->msix_count;
rf->msix_entries = cdev_info->msix_entries;
rf->limits_sel = 5;
rf->protocol_used = IRDMA_IWARP_PROTOCOL_ONLY;
rf->iwdev = iwdev;
iwdev->init_state = INITIAL_STATE;
iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED;
iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
iwdev->netdev = cdev_info->netdev;
iwdev->vsi_num = 0;
}
/**
* i40iw_open - client interface operation open for iwarp/uda device
* @cdev_info: parent lan device information structure with data/ops
* @client: iwarp client information, provided during registration
*
* Called by the lan driver during the processing of client register
* Create device resources, set up queues, pble and hmc objects and
* register the device with the ib verbs interface
* Return 0 if successful, otherwise return error
*/
static int i40iw_open(struct i40e_info *cdev_info, struct i40e_client *client)
{
struct irdma_l2params l2params = {};
struct irdma_device *iwdev;
struct irdma_pci_f *rf;
int err = -EIO;
int i;
u16 qset;
u16 last_qset = IRDMA_NO_QSET;
iwdev = ib_alloc_device(irdma_device, ibdev);
if (!iwdev)
return -ENOMEM;
iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL);
if (!iwdev->rf) {
ib_dealloc_device(&iwdev->ibdev);
return -ENOMEM;
}
i40iw_fill_device_info(iwdev, cdev_info);
rf = iwdev->rf;
if (irdma_ctrl_init_hw(rf)) {
err = -EIO;
goto err_ctrl_init;
}
l2params.mtu = (cdev_info->params.mtu) ? cdev_info->params.mtu : IRDMA_DEFAULT_MTU;
for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) {
qset = cdev_info->params.qos.prio_qos[i].qs_handle;
l2params.up2tc[i] = cdev_info->params.qos.prio_qos[i].tc;
l2params.qs_handle_list[i] = qset;
if (last_qset == IRDMA_NO_QSET)
last_qset = qset;
else if ((qset != last_qset) && (qset != IRDMA_NO_QSET))
iwdev->dcb = true;
}
if (irdma_rt_init_hw(iwdev, &l2params)) {
err = -EIO;
goto err_rt_init;
}
err = irdma_ib_register_device(iwdev);
if (err)
goto err_ibreg;
ibdev_dbg(&iwdev->ibdev, "INIT: Gen1 PF[%d] open success\n",
PCI_FUNC(rf->pcidev->devfn));
return 0;
err_ibreg:
irdma_rt_deinit_hw(iwdev);
err_rt_init:
irdma_ctrl_deinit_hw(rf);
err_ctrl_init:
kfree(iwdev->rf);
ib_dealloc_device(&iwdev->ibdev);
return err;
}
/* client interface functions */
static const struct i40e_client_ops i40e_ops = {
.open = i40iw_open,
.close = i40iw_close,
.l2_param_change = i40iw_l2param_change
};
static struct i40e_client i40iw_client = {
.ops = &i40e_ops,
.type = I40E_CLIENT_IWARP,
};
static int i40iw_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id)
{
struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev,
struct i40e_auxiliary_device,
aux_dev);
struct i40e_info *cdev_info = i40e_adev->ldev;
strncpy(i40iw_client.name, "irdma", I40E_CLIENT_STR_LENGTH);
i40e_client_device_register(cdev_info, &i40iw_client);
return 0;
}
static void i40iw_remove(struct auxiliary_device *aux_dev)
{
struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev,
struct i40e_auxiliary_device,
aux_dev);
struct i40e_info *cdev_info = i40e_adev->ldev;
return i40e_client_device_unregister(cdev_info);
}
static const struct auxiliary_device_id i40iw_auxiliary_id_table[] = {
{.name = "i40e.iwarp", },
{},
};
MODULE_DEVICE_TABLE(auxiliary, i40iw_auxiliary_id_table);
struct auxiliary_driver i40iw_auxiliary_drv = {
.name = "gen_1",
.id_table = i40iw_auxiliary_id_table,
.probe = i40iw_probe,
.remove = i40iw_remove,
};
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