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// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
/* Copyright (c) 2023 - 2024 Intel Corporation */
#include "main.h"
#include <linux/net/intel/iidc_rdma_idpf.h>
#include "ig3rdma_hw.h"
static void ig3rdma_idc_core_event_handler(struct iidc_rdma_core_dev_info *cdev_info,
struct iidc_rdma_event *event)
{
struct irdma_pci_f *rf = auxiliary_get_drvdata(cdev_info->adev);
if (*event->type & BIT(IIDC_RDMA_EVENT_WARN_RESET)) {
rf->reset = true;
rf->sc_dev.vchnl_up = false;
}
}
int ig3rdma_vchnl_send_sync(struct irdma_sc_dev *dev, u8 *msg, u16 len,
u8 *recv_msg, u16 *recv_len)
{
struct iidc_rdma_core_dev_info *cdev_info = dev_to_rf(dev)->cdev;
int ret;
ret = idpf_idc_rdma_vc_send_sync(cdev_info, msg, len, recv_msg,
recv_len);
if (ret == -ETIMEDOUT) {
ibdev_err(&(dev_to_rf(dev)->iwdev->ibdev),
"Virtual channel Req <-> Resp completion timeout\n");
dev->vchnl_up = false;
}
return ret;
}
static int ig3rdma_vchnl_init(struct irdma_pci_f *rf,
struct iidc_rdma_core_dev_info *cdev_info,
u8 *rdma_ver)
{
struct iidc_rdma_priv_dev_info *idc_priv = cdev_info->iidc_priv;
struct irdma_vchnl_init_info virt_info;
u8 gen = rf->rdma_ver;
int ret;
rf->vchnl_wq = alloc_ordered_workqueue("irdma-virtchnl-wq", 0);
if (!rf->vchnl_wq)
return -ENOMEM;
mutex_init(&rf->sc_dev.vchnl_mutex);
virt_info.is_pf = !idc_priv->ftype;
virt_info.hw_rev = gen;
virt_info.privileged = gen == IRDMA_GEN_2;
virt_info.vchnl_wq = rf->vchnl_wq;
ret = irdma_sc_vchnl_init(&rf->sc_dev, &virt_info);
if (ret) {
destroy_workqueue(rf->vchnl_wq);
return ret;
}
*rdma_ver = rf->sc_dev.hw_attrs.uk_attrs.hw_rev;
return 0;
}
/**
* ig3rdma_request_reset - Request a reset
* @rf: RDMA PCI function
*/
static void ig3rdma_request_reset(struct irdma_pci_f *rf)
{
ibdev_warn(&rf->iwdev->ibdev, "Requesting a reset\n");
idpf_idc_request_reset(rf->cdev, IIDC_FUNC_RESET);
}
static int ig3rdma_cfg_regions(struct irdma_hw *hw,
struct iidc_rdma_core_dev_info *cdev_info)
{
struct iidc_rdma_priv_dev_info *idc_priv = cdev_info->iidc_priv;
struct pci_dev *pdev = cdev_info->pdev;
int i;
switch (idc_priv->ftype) {
case IIDC_FUNCTION_TYPE_PF:
hw->rdma_reg.len = IG3_PF_RDMA_REGION_LEN;
hw->rdma_reg.offset = IG3_PF_RDMA_REGION_OFFSET;
break;
case IIDC_FUNCTION_TYPE_VF:
hw->rdma_reg.len = IG3_VF_RDMA_REGION_LEN;
hw->rdma_reg.offset = IG3_VF_RDMA_REGION_OFFSET;
break;
default:
return -ENODEV;
}
hw->rdma_reg.addr = ioremap(pci_resource_start(pdev, 0) + hw->rdma_reg.offset,
hw->rdma_reg.len);
if (!hw->rdma_reg.addr)
return -ENOMEM;
hw->num_io_regions = le16_to_cpu(idc_priv->num_memory_regions);
hw->io_regs = kcalloc(hw->num_io_regions,
sizeof(struct irdma_mmio_region), GFP_KERNEL);
if (!hw->io_regs) {
iounmap(hw->rdma_reg.addr);
return -ENOMEM;
}
for (i = 0; i < hw->num_io_regions; i++) {
hw->io_regs[i].addr =
idc_priv->mapped_mem_regions[i].region_addr;
hw->io_regs[i].len =
le64_to_cpu(idc_priv->mapped_mem_regions[i].size);
hw->io_regs[i].offset =
le64_to_cpu(idc_priv->mapped_mem_regions[i].start_offset);
}
return 0;
}
static void ig3rdma_decfg_rf(struct irdma_pci_f *rf)
{
struct irdma_hw *hw = &rf->hw;
destroy_workqueue(rf->vchnl_wq);
kfree(hw->io_regs);
iounmap(hw->rdma_reg.addr);
}
static int ig3rdma_cfg_rf(struct irdma_pci_f *rf,
struct iidc_rdma_core_dev_info *cdev_info)
{
struct iidc_rdma_priv_dev_info *idc_priv = cdev_info->iidc_priv;
int err;
rf->sc_dev.hw = &rf->hw;
rf->cdev = cdev_info;
rf->pcidev = cdev_info->pdev;
rf->hw.device = &rf->pcidev->dev;
rf->msix_count = idc_priv->msix_count;
rf->msix_entries = idc_priv->msix_entries;
err = ig3rdma_vchnl_init(rf, cdev_info, &rf->rdma_ver);
if (err)
return err;
err = ig3rdma_cfg_regions(&rf->hw, cdev_info);
if (err) {
destroy_workqueue(rf->vchnl_wq);
return err;
}
rf->protocol_used = IRDMA_ROCE_PROTOCOL_ONLY;
rf->rsrc_profile = IRDMA_HMC_PROFILE_DEFAULT;
rf->rst_to = IRDMA_RST_TIMEOUT_HZ;
rf->gen_ops.request_reset = ig3rdma_request_reset;
rf->limits_sel = 7;
mutex_init(&rf->ah_tbl_lock);
return 0;
}
static int ig3rdma_core_probe(struct auxiliary_device *aux_dev,
const struct auxiliary_device_id *id)
{
struct iidc_rdma_core_auxiliary_dev *idc_adev =
container_of(aux_dev, struct iidc_rdma_core_auxiliary_dev, adev);
struct iidc_rdma_core_dev_info *cdev_info = idc_adev->cdev_info;
struct irdma_pci_f *rf;
int err;
rf = kzalloc(sizeof(*rf), GFP_KERNEL);
if (!rf)
return -ENOMEM;
err = ig3rdma_cfg_rf(rf, cdev_info);
if (err)
goto err_cfg_rf;
err = irdma_ctrl_init_hw(rf);
if (err)
goto err_ctrl_init;
auxiliary_set_drvdata(aux_dev, rf);
err = idpf_idc_vport_dev_ctrl(cdev_info, true);
if (err)
goto err_vport_ctrl;
return 0;
err_vport_ctrl:
irdma_ctrl_deinit_hw(rf);
err_ctrl_init:
ig3rdma_decfg_rf(rf);
err_cfg_rf:
kfree(rf);
return err;
}
static void ig3rdma_core_remove(struct auxiliary_device *aux_dev)
{
struct iidc_rdma_core_auxiliary_dev *idc_adev =
container_of(aux_dev, struct iidc_rdma_core_auxiliary_dev, adev);
struct iidc_rdma_core_dev_info *cdev_info = idc_adev->cdev_info;
struct irdma_pci_f *rf = auxiliary_get_drvdata(aux_dev);
idpf_idc_vport_dev_ctrl(cdev_info, false);
irdma_ctrl_deinit_hw(rf);
ig3rdma_decfg_rf(rf);
kfree(rf);
}
static const struct auxiliary_device_id ig3rdma_core_auxiliary_id_table[] = {
{.name = "idpf.8086.rdma.core", },
{},
};
MODULE_DEVICE_TABLE(auxiliary, ig3rdma_core_auxiliary_id_table);
struct iidc_rdma_core_auxiliary_drv ig3rdma_core_auxiliary_drv = {
.adrv = {
.name = "core",
.id_table = ig3rdma_core_auxiliary_id_table,
.probe = ig3rdma_core_probe,
.remove = ig3rdma_core_remove,
},
.event_handler = ig3rdma_idc_core_event_handler,
};
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