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(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 */
 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(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
 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(sizeof(*rf), GFP_KERNEL);
121	if (!iwdev->rf) {
122		ib_dealloc_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)) {
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(iwdev->rf);
165	ib_dealloc_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(cdev_info, &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(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};