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
7static 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 */
15static 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(ndev: cdev_info->netdev, driver_id: 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(vsi: &iwdev->vsi, l2params: &l2params);
34 ib_device_put(device: 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 */
46static 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(ndev: cdev_info->netdev, driver_id: 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(device: ibdev);
63 pr_debug("INIT: Gen1 PF[%d] close complete\n", PCI_FUNC(cdev_info->pcidev->devfn));
64}
65
66static 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
73static 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->pf_id = cdev_info->fid;
81 rf->hw.hw_addr = cdev_info->hw_addr;
82 rf->cdev = cdev_info;
83 rf->msix_count = cdev_info->msix_count;
84 rf->msix_entries = cdev_info->msix_entries;
85 rf->limits_sel = 5;
86 rf->protocol_used = IRDMA_IWARP_PROTOCOL_ONLY;
87 rf->iwdev = iwdev;
88
89 iwdev->init_state = INITIAL_STATE;
90 iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED;
91 iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
92 iwdev->netdev = cdev_info->netdev;
93 iwdev->vsi_num = 0;
94}
95
96/**
97 * i40iw_open - client interface operation open for iwarp/uda device
98 * @cdev_info: parent lan device information structure with data/ops
99 * @client: iwarp client information, provided during registration
100 *
101 * Called by the lan driver during the processing of client register
102 * Create device resources, set up queues, pble and hmc objects and
103 * register the device with the ib verbs interface
104 * Return 0 if successful, otherwise return error
105 */
106static int i40iw_open(struct i40e_info *cdev_info, struct i40e_client *client)
107{
108 struct irdma_l2params l2params = {};
109 struct irdma_device *iwdev;
110 struct irdma_pci_f *rf;
111 int err = -EIO;
112 int i;
113 u16 qset;
114 u16 last_qset = IRDMA_NO_QSET;
115
116 iwdev = ib_alloc_device(irdma_device, ibdev);
117 if (!iwdev)
118 return -ENOMEM;
119
120 iwdev->rf = kzalloc(size: sizeof(*rf), GFP_KERNEL);
121 if (!iwdev->rf) {
122 ib_dealloc_device(device: &iwdev->ibdev);
123 return -ENOMEM;
124 }
125
126 i40iw_fill_device_info(iwdev, cdev_info);
127 rf = iwdev->rf;
128
129 if (irdma_ctrl_init_hw(rf)) {
130 err = -EIO;
131 goto err_ctrl_init;
132 }
133
134 l2params.mtu = (cdev_info->params.mtu) ? cdev_info->params.mtu : IRDMA_DEFAULT_MTU;
135 for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) {
136 qset = cdev_info->params.qos.prio_qos[i].qs_handle;
137 l2params.up2tc[i] = cdev_info->params.qos.prio_qos[i].tc;
138 l2params.qs_handle_list[i] = qset;
139 if (last_qset == IRDMA_NO_QSET)
140 last_qset = qset;
141 else if ((qset != last_qset) && (qset != IRDMA_NO_QSET))
142 iwdev->dcb_vlan_mode = true;
143 }
144
145 if (irdma_rt_init_hw(iwdev, l2params: &l2params)) {
146 err = -EIO;
147 goto err_rt_init;
148 }
149
150 err = irdma_ib_register_device(iwdev);
151 if (err)
152 goto err_ibreg;
153
154 ibdev_dbg(&iwdev->ibdev, "INIT: Gen1 PF[%d] open success\n",
155 PCI_FUNC(rf->pcidev->devfn));
156
157 return 0;
158
159err_ibreg:
160 irdma_rt_deinit_hw(iwdev);
161err_rt_init:
162 irdma_ctrl_deinit_hw(rf);
163err_ctrl_init:
164 kfree(objp: iwdev->rf);
165 ib_dealloc_device(device: &iwdev->ibdev);
166
167 return err;
168}
169
170/* client interface functions */
171static const struct i40e_client_ops i40e_ops = {
172 .open = i40iw_open,
173 .close = i40iw_close,
174 .l2_param_change = i40iw_l2param_change
175};
176
177static struct i40e_client i40iw_client = {
178 .ops = &i40e_ops,
179 .type = I40E_CLIENT_IWARP,
180};
181
182static int i40iw_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id)
183{
184 struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev,
185 struct i40e_auxiliary_device,
186 aux_dev);
187 struct i40e_info *cdev_info = i40e_adev->ldev;
188
189 strscpy_pad(i40iw_client.name, "irdma", I40E_CLIENT_STR_LENGTH);
190 i40e_client_device_register(ldev: cdev_info, client: &i40iw_client);
191
192 return 0;
193}
194
195static void i40iw_remove(struct auxiliary_device *aux_dev)
196{
197 struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev,
198 struct i40e_auxiliary_device,
199 aux_dev);
200 struct i40e_info *cdev_info = i40e_adev->ldev;
201
202 i40e_client_device_unregister(ldev: cdev_info);
203}
204
205static const struct auxiliary_device_id i40iw_auxiliary_id_table[] = {
206 {.name = "i40e.iwarp", },
207 {},
208};
209
210MODULE_DEVICE_TABLE(auxiliary, i40iw_auxiliary_id_table);
211
212struct auxiliary_driver i40iw_auxiliary_drv = {
213 .name = "gen_1",
214 .id_table = i40iw_auxiliary_id_table,
215 .probe = i40iw_probe,
216 .remove = i40iw_remove,
217};
218

source code of linux/drivers/infiniband/hw/irdma/i40iw_if.c