1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
// 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->rf->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;
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,
};
|
