// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (C) 2023 Intel Corporation */
#include "idpf.h"
#include "idpf_devids.h"
#include "idpf_virtchnl.h"
#define DRV_SUMMARY "Intel(R) Infrastructure Data Path Function Linux Driver"
MODULE_DESCRIPTION(DRV_SUMMARY);
MODULE_IMPORT_NS(LIBETH);
MODULE_LICENSE("GPL");
/**
* idpf_remove - Device removal routine
* @pdev: PCI device information struct
*/
static void idpf_remove(struct pci_dev *pdev)
{
struct idpf_adapter *adapter = pci_get_drvdata(pdev);
int i;
set_bit(IDPF_REMOVE_IN_PROG, adapter->flags);
/* Wait until vc_event_task is done to consider if any hard reset is
* in progress else we may go ahead and release the resources but the
* thread doing the hard reset might continue the init path and
* end up in bad state.
*/
cancel_delayed_work_sync(&adapter->vc_event_task);
if (adapter->num_vfs)
idpf_sriov_configure(pdev, 0);
idpf_vc_core_deinit(adapter);
/* Be a good citizen and leave the device clean on exit */
adapter->dev_ops.reg_ops.trigger_reset(adapter, IDPF_HR_FUNC_RESET);
idpf_deinit_dflt_mbx(adapter);
if (!adapter->netdevs)
goto destroy_wqs;
/* There are some cases where it's possible to still have netdevs
* registered with the stack at this point, e.g. if the driver detected
* a HW reset and rmmod is called before it fully recovers. Unregister
* any stale netdevs here.
*/
for (i = 0; i < adapter->max_vports; i++) {
if (!adapter->netdevs[i])
continue;
if (adapter->netdevs[i]->reg_state != NETREG_UNINITIALIZED)
unregister_netdev(adapter->netdevs[i]);
free_netdev(adapter->netdevs[i]);
adapter->netdevs[i] = NULL;
}
destroy_wqs:
destroy_workqueue(adapter->init_wq);
destroy_workqueue(adapter->serv_wq);
destroy_workqueue(adapter->mbx_wq);
destroy_workqueue(adapter->stats_wq);
destroy_workqueue(adapter->vc_event_wq);
for (i = 0; i < adapter->max_vports; i++) {
kfree(adapter->vport_config[i]);
adapter->vport_config[i] = NULL;
}
kfree(adapter->vport_config);
adapter->vport_config = NULL;
kfree(adapter->netdevs);
adapter->netdevs = NULL;
kfree(adapter->vcxn_mngr);
adapter->vcxn_mngr = NULL;
mutex_destroy(&adapter->vport_ctrl_lock);
mutex_destroy(&adapter->vector_lock);
mutex_destroy(&adapter->queue_lock);
mutex_destroy(&adapter->vc_buf_lock);
pci_set_drvdata(pdev, NULL);
kfree(adapter);
}
/**
* idpf_shutdown - PCI callback for shutting down device
* @pdev: PCI device information struct
*/
static void idpf_shutdown(struct pci_dev *pdev)
{
idpf_remove(pdev);
if (system_state == SYSTEM_POWER_OFF)
pci_set_power_state(pdev, PCI_D3hot);
}
/**
* idpf_cfg_hw - Initialize HW struct
* @adapter: adapter to setup hw struct for
*
* Returns 0 on success, negative on failure
*/
static int idpf_cfg_hw(struct idpf_adapter *adapter)
{
struct pci_dev *pdev = adapter->pdev;
struct idpf_hw *hw = &adapter->hw;
hw->hw_addr = pcim_iomap_table(pdev)[0];
if (!hw->hw_addr) {
pci_err(pdev, "failed to allocate PCI iomap table\n");
return -ENOMEM;
}
hw->back = adapter;
return 0;
}
/**
* idpf_probe - Device initialization routine
* @pdev: PCI device information struct
* @ent: entry in idpf_pci_tbl
*
* Returns 0 on success, negative on failure
*/
static int idpf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct device *dev = &pdev->dev;
struct idpf_adapter *adapter;
int err;
adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
if (!adapter)
return -ENOMEM;
adapter->req_tx_splitq = true;
adapter->req_rx_splitq = true;
switch (ent->device) {
case IDPF_DEV_ID_PF:
idpf_dev_ops_init(adapter);
break;
case IDPF_DEV_ID_VF:
idpf_vf_dev_ops_init(adapter);
adapter->crc_enable = true;
break;
default:
err = -ENODEV;
dev_err(&pdev->dev, "Unexpected dev ID 0x%x in idpf probe\n",
ent->device);
goto err_free;
}
adapter->pdev = pdev;
err = pcim_enable_device(pdev);
if (err)
goto err_free;
err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
if (err) {
pci_err(pdev, "pcim_iomap_regions failed %pe\n", ERR_PTR(err));
goto err_free;
}
/* set up for high or low dma */
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
if (err) {
pci_err(pdev, "DMA configuration failed: %pe\n", ERR_PTR(err));
goto err_free;
}
pci_set_master(pdev);
pci_set_drvdata(pdev, adapter);
adapter->init_wq = alloc_workqueue("%s-%s-init", 0, 0,
dev_driver_string(dev),
dev_name(dev));
if (!adapter->init_wq) {
dev_err(dev, "Failed to allocate init workqueue\n");
err = -ENOMEM;
goto err_free;
}
adapter->serv_wq = alloc_workqueue("%s-%s-service", 0, 0,
dev_driver_string(dev),
dev_name(dev));
if (!adapter->serv_wq) {
dev_err(dev, "Failed to allocate service workqueue\n");
err = -ENOMEM;
goto err_serv_wq_alloc;
}
adapter->mbx_wq = alloc_workqueue("%s-%s-mbx", 0, 0,
dev_driver_string(dev),
dev_name(dev));
if (!adapter->mbx_wq) {
dev_err(dev, "Failed to allocate mailbox workqueue\n");
err = -ENOMEM;
goto err_mbx_wq_alloc;
}
adapter->stats_wq = alloc_workqueue("%s-%s-stats", 0, 0,
dev_driver_string(dev),
dev_name(dev));
if (!adapter->stats_wq) {
dev_err(dev, "Failed to allocate workqueue\n");
err = -ENOMEM;
goto err_stats_wq_alloc;
}
adapter->vc_event_wq = alloc_workqueue("%s-%s-vc_event", 0, 0,
dev_driver_string(dev),
dev_name(dev));
if (!adapter->vc_event_wq) {
dev_err(dev, "Failed to allocate virtchnl event workqueue\n");
err = -ENOMEM;
goto err_vc_event_wq_alloc;
}
/* setup msglvl */
adapter->msg_enable = netif_msg_init(-1, IDPF_AVAIL_NETIF_M);
err = idpf_cfg_hw(adapter);
if (err) {
dev_err(dev, "Failed to configure HW structure for adapter: %d\n",
err);
goto err_cfg_hw;
}
mutex_init(&adapter->vport_ctrl_lock);
mutex_init(&adapter->vector_lock);
mutex_init(&adapter->queue_lock);
mutex_init(&adapter->vc_buf_lock);
INIT_DELAYED_WORK(&adapter->init_task, idpf_init_task);
INIT_DELAYED_WORK(&adapter->serv_task, idpf_service_task);
INIT_DELAYED_WORK(&adapter->mbx_task, idpf_mbx_task);
INIT_DELAYED_WORK(&adapter->stats_task, idpf_statistics_task);
INIT_DELAYED_WORK(&adapter->vc_event_task, idpf_vc_event_task);
adapter->dev_ops.reg_ops.reset_reg_init(adapter);
set_bit(IDPF_HR_DRV_LOAD, adapter->flags);
queue_delayed_work(adapter->vc_event_wq, &adapter->vc_event_task,
msecs_to_jiffies(10 * (pdev->devfn & 0x07)));
return 0;
err_cfg_hw:
destroy_workqueue(adapter->vc_event_wq);
err_vc_event_wq_alloc:
destroy_workqueue(adapter->stats_wq);
err_stats_wq_alloc:
destroy_workqueue(adapter->mbx_wq);
err_mbx_wq_alloc:
destroy_workqueue(adapter->serv_wq);
err_serv_wq_alloc:
destroy_workqueue(adapter->init_wq);
err_free:
kfree(adapter);
return err;
}
/* idpf_pci_tbl - PCI Dev idpf ID Table
*/
static const struct pci_device_id idpf_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, IDPF_DEV_ID_PF)},
{ PCI_VDEVICE(INTEL, IDPF_DEV_ID_VF)},
{ /* Sentinel */ }
};
MODULE_DEVICE_TABLE(pci, idpf_pci_tbl);
static struct pci_driver idpf_driver = {
.name = KBUILD_MODNAME,
.id_table = idpf_pci_tbl,
.probe = idpf_probe,
.sriov_configure = idpf_sriov_configure,
.remove = idpf_remove,
.shutdown = idpf_shutdown,
};
module_pci_driver(idpf_driver);
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