drivers/infiniband/hw/irdma/i40iw_if.c

   1 // SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
   2 /* Copyright (c) 2015 - 2021 Intel Corporation */
   3 #include "main.h"
   4 #include "i40iw_hw.h"
   5 #include <linux/net/intel/i40e_client.h>
   6
   7 static struct i40e_client i40iw_client;
   8
   9 /**
  10  * i40iw_l2param_change - handle mss change
  11  * @cdev_info: parent lan device information structure with data/ops
  12  * @client: client for parameter change
  13  * @params: new parameters from L2
  14  */
  15 static void i40iw_l2param_change(struct i40e_info *cdev_info,
  16                                  struct i40e_client *client,
  17                                  struct i40e_params *params)
  18 {
  19         struct irdma_l2params l2params = {};
  20         struct irdma_device *iwdev;
  21         struct ib_device *ibdev;
  22
  23         ibdev = ib_device_get_by_netdev(cdev_info->netdev, RDMA_DRIVER_IRDMA);
  24         if (!ibdev)
  25                 return;
  26
  27         iwdev = to_iwdev(ibdev);
  28
  29         if (iwdev->vsi.mtu != params->mtu) {
  30                 l2params.mtu_changed = true;
  31                 l2params.mtu = params->mtu;
  32         }
  33         irdma_change_l2params(&iwdev->vsi, &l2params);
  34         ib_device_put(ibdev);
  35 }
  36
  37 /**
  38  * i40iw_close - client interface operation close for iwarp/uda device
  39  * @cdev_info: parent lan device information structure with data/ops
  40  * @client: client to close
  41  * @reset: flag to indicate close on reset
  42  *
  43  * Called by the lan driver during the processing of client unregister
  44  * Destroy and clean up the driver resources
  45  */
  46 static void i40iw_close(struct i40e_info *cdev_info, struct i40e_client *client,
  47                         bool reset)
  48 {
  49         struct irdma_device *iwdev;
  50         struct ib_device *ibdev;
  51
  52         ibdev = ib_device_get_by_netdev(cdev_info->netdev, RDMA_DRIVER_IRDMA);
  53         if (WARN_ON(!ibdev))
  54                 return;
  55
  56         iwdev = to_iwdev(ibdev);
  57         if (reset)
  58                 iwdev->rf->reset = true;
  59
  60         iwdev->iw_status = 0;
  61         irdma_port_ibevent(iwdev);
  62         ib_unregister_device_and_put(ibdev);
  63         pr_debug("INIT: Gen1 PF[%d] close complete\n", PCI_FUNC(cdev_info->pcidev->devfn));
  64 }
  65
  66 static void i40iw_request_reset(struct irdma_pci_f *rf)
  67 {
  68         struct i40e_info *cdev_info = rf->cdev;
  69
  70         cdev_info->ops->request_reset(cdev_info, &i40iw_client, 1);
  71 }
  72
  73 static void i40iw_fill_device_info(struct irdma_device *iwdev, struct i40e_info *cdev_info)
  74 {
  75         struct irdma_pci_f *rf = iwdev->rf;
  76
  77         rf->rdma_ver = IRDMA_GEN_1;
  78         rf->gen_ops.request_reset = i40iw_request_reset;
  79         rf->pcidev = cdev_info->pcidev;
  80         rf->hw.hw_addr = cdev_info->hw_addr;
  81         rf->cdev = cdev_info;
  82         rf->msix_count = cdev_info->msix_count;
  83         rf->msix_entries = cdev_info->msix_entries;
  84         rf->limits_sel = 5;
  85         rf->protocol_used = IRDMA_IWARP_PROTOCOL_ONLY;
  86         rf->iwdev = iwdev;
  87
  88         iwdev->init_state = INITIAL_STATE;
  89         iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED;
  90         iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
  91         iwdev->netdev = cdev_info->netdev;
  92         iwdev->vsi_num = 0;
  93 }
  94
  95 /**
  96  * i40iw_open - client interface operation open for iwarp/uda device
  97  * @cdev_info: parent lan device information structure with data/ops
  98  * @client: iwarp client information, provided during registration
  99  *
 100  * Called by the lan driver during the processing of client register
 101  * Create device resources, set up queues, pble and hmc objects and
 102  * register the device with the ib verbs interface
 103  * Return 0 if successful, otherwise return error
 104  */
 105 static int i40iw_open(struct i40e_info *cdev_info, struct i40e_client *client)
 106 {
 107         struct irdma_l2params l2params = {};
 108         struct irdma_device *iwdev;
 109         struct irdma_pci_f *rf;
 110         int err = -EIO;
 111         int i;
 112         u16 qset;
 113         u16 last_qset = IRDMA_NO_QSET;
 114
 115         iwdev = ib_alloc_device(irdma_device, ibdev);
 116         if (!iwdev)
 117                 return -ENOMEM;
 118
 119         iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL);
 120         if (!iwdev->rf) {
 121                 ib_dealloc_device(&iwdev->ibdev);
 122                 return -ENOMEM;
 123         }
 124
 125         i40iw_fill_device_info(iwdev, cdev_info);
 126         rf = iwdev->rf;
 127
 128         if (irdma_ctrl_init_hw(rf)) {
 129                 err = -EIO;
 130                 goto err_ctrl_init;
 131         }
 132
 133         l2params.mtu = (cdev_info->params.mtu) ? cdev_info->params.mtu : IRDMA_DEFAULT_MTU;
 134         for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) {
 135                 qset = cdev_info->params.qos.prio_qos[i].qs_handle;
 136                 l2params.up2tc[i] = cdev_info->params.qos.prio_qos[i].tc;
 137                 l2params.qs_handle_list[i] = qset;
 138                 if (last_qset == IRDMA_NO_QSET)
 139                         last_qset = qset;
 140                 else if ((qset != last_qset) && (qset != IRDMA_NO_QSET))
 141                         iwdev->dcb = true;
 142         }
 143
 144         if (irdma_rt_init_hw(iwdev, &l2params)) {
 145                 err = -EIO;
 146                 goto err_rt_init;
 147         }
 148
 149         err = irdma_ib_register_device(iwdev);
 150         if (err)
 151                 goto err_ibreg;
 152
 153         ibdev_dbg(&iwdev->ibdev, "INIT: Gen1 PF[%d] open success\n",
 154                   PCI_FUNC(rf->pcidev->devfn));
 155
 156         return 0;
 157
 158 err_ibreg:
 159         irdma_rt_deinit_hw(iwdev);
 160 err_rt_init:
 161         irdma_ctrl_deinit_hw(rf);
 162 err_ctrl_init:
 163         kfree(iwdev->rf);
 164         ib_dealloc_device(&iwdev->ibdev);
 165
 166         return err;
 167 }
 168
 169 /* client interface functions */
 170 static const struct i40e_client_ops i40e_ops = {
 171         .open = i40iw_open,
 172         .close = i40iw_close,
 173         .l2_param_change = i40iw_l2param_change
 174 };
 175
 176 static struct i40e_client i40iw_client = {
 177         .ops = &i40e_ops,
 178         .type = I40E_CLIENT_IWARP,
 179 };
 180
 181 static int i40iw_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id)
 182 {
 183         struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev,
 184                                                                struct i40e_auxiliary_device,
 185                                                                aux_dev);
 186         struct i40e_info *cdev_info = i40e_adev->ldev;
 187
 188         strncpy(i40iw_client.name, "irdma", I40E_CLIENT_STR_LENGTH);
 189         i40e_client_device_register(cdev_info, &i40iw_client);
 190
 191         return 0;
 192 }
 193
 194 static void i40iw_remove(struct auxiliary_device *aux_dev)
 195 {
 196         struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev,
 197                                                                struct i40e_auxiliary_device,
 198                                                                aux_dev);
 199         struct i40e_info *cdev_info = i40e_adev->ldev;
 200
 201         return i40e_client_device_unregister(cdev_info);
 202 }
 203
 204 static const struct auxiliary_device_id i40iw_auxiliary_id_table[] = {
 205         {.name = "i40e.iwarp", },
 206         {},
 207 };
 208
 209 MODULE_DEVICE_TABLE(auxiliary, i40iw_auxiliary_id_table);
 210
 211 struct auxiliary_driver i40iw_auxiliary_drv = {
 212         .name = "gen_1",
 213         .id_table = i40iw_auxiliary_id_table,
 214         .probe = i40iw_probe,
 215         .remove = i40iw_remove,
 216 };