1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (C) 2023 Intel Corporation */
3
4 #include "idpf.h"
5 #include "idpf_devids.h"
6 #include "idpf_virtchnl.h"
7
8 #define DRV_SUMMARY "Intel(R) Infrastructure Data Path Function Linux Driver"
9
10 MODULE_DESCRIPTION(DRV_SUMMARY);
11 MODULE_IMPORT_NS("LIBETH");
12 MODULE_LICENSE("GPL");
13
14 /**
15 * idpf_remove - Device removal routine
16 * @pdev: PCI device information struct
17 */
idpf_remove(struct pci_dev * pdev)18 static void idpf_remove(struct pci_dev *pdev)
19 {
20 struct idpf_adapter *adapter = pci_get_drvdata(pdev);
21 int i;
22
23 set_bit(IDPF_REMOVE_IN_PROG, adapter->flags);
24
25 /* Wait until vc_event_task is done to consider if any hard reset is
26 * in progress else we may go ahead and release the resources but the
27 * thread doing the hard reset might continue the init path and
28 * end up in bad state.
29 */
30 cancel_delayed_work_sync(&adapter->vc_event_task);
31 if (adapter->num_vfs)
32 idpf_sriov_configure(pdev, 0);
33
34 idpf_vc_core_deinit(adapter);
35
36 /* Be a good citizen and leave the device clean on exit */
37 adapter->dev_ops.reg_ops.trigger_reset(adapter, IDPF_HR_FUNC_RESET);
38 idpf_deinit_dflt_mbx(adapter);
39
40 if (!adapter->netdevs)
41 goto destroy_wqs;
42
43 /* There are some cases where it's possible to still have netdevs
44 * registered with the stack at this point, e.g. if the driver detected
45 * a HW reset and rmmod is called before it fully recovers. Unregister
46 * any stale netdevs here.
47 */
48 for (i = 0; i < adapter->max_vports; i++) {
49 if (!adapter->netdevs[i])
50 continue;
51 if (adapter->netdevs[i]->reg_state != NETREG_UNINITIALIZED)
52 unregister_netdev(adapter->netdevs[i]);
53 free_netdev(adapter->netdevs[i]);
54 adapter->netdevs[i] = NULL;
55 }
56
57 destroy_wqs:
58 destroy_workqueue(adapter->init_wq);
59 destroy_workqueue(adapter->serv_wq);
60 destroy_workqueue(adapter->mbx_wq);
61 destroy_workqueue(adapter->stats_wq);
62 destroy_workqueue(adapter->vc_event_wq);
63
64 for (i = 0; i < adapter->max_vports; i++) {
65 kfree(adapter->vport_config[i]);
66 adapter->vport_config[i] = NULL;
67 }
68 kfree(adapter->vport_config);
69 adapter->vport_config = NULL;
70 kfree(adapter->netdevs);
71 adapter->netdevs = NULL;
72 kfree(adapter->vcxn_mngr);
73 adapter->vcxn_mngr = NULL;
74
75 mutex_destroy(&adapter->vport_ctrl_lock);
76 mutex_destroy(&adapter->vector_lock);
77 mutex_destroy(&adapter->queue_lock);
78 mutex_destroy(&adapter->vc_buf_lock);
79
80 pci_set_drvdata(pdev, NULL);
81 kfree(adapter);
82 }
83
84 /**
85 * idpf_shutdown - PCI callback for shutting down device
86 * @pdev: PCI device information struct
87 */
idpf_shutdown(struct pci_dev * pdev)88 static void idpf_shutdown(struct pci_dev *pdev)
89 {
90 struct idpf_adapter *adapter = pci_get_drvdata(pdev);
91
92 cancel_delayed_work_sync(&adapter->serv_task);
93 cancel_delayed_work_sync(&adapter->vc_event_task);
94 idpf_vc_core_deinit(adapter);
95 idpf_deinit_dflt_mbx(adapter);
96
97 if (system_state == SYSTEM_POWER_OFF)
98 pci_set_power_state(pdev, PCI_D3hot);
99 }
100
101 /**
102 * idpf_cfg_hw - Initialize HW struct
103 * @adapter: adapter to setup hw struct for
104 *
105 * Returns 0 on success, negative on failure
106 */
idpf_cfg_hw(struct idpf_adapter * adapter)107 static int idpf_cfg_hw(struct idpf_adapter *adapter)
108 {
109 struct pci_dev *pdev = adapter->pdev;
110 struct idpf_hw *hw = &adapter->hw;
111
112 hw->hw_addr = pcim_iomap_table(pdev)[0];
113 if (!hw->hw_addr) {
114 pci_err(pdev, "failed to allocate PCI iomap table\n");
115
116 return -ENOMEM;
117 }
118
119 hw->back = adapter;
120
121 return 0;
122 }
123
124 /**
125 * idpf_probe - Device initialization routine
126 * @pdev: PCI device information struct
127 * @ent: entry in idpf_pci_tbl
128 *
129 * Returns 0 on success, negative on failure
130 */
idpf_probe(struct pci_dev * pdev,const struct pci_device_id * ent)131 static int idpf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
132 {
133 struct device *dev = &pdev->dev;
134 struct idpf_adapter *adapter;
135 int err;
136
137 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
138 if (!adapter)
139 return -ENOMEM;
140
141 adapter->req_tx_splitq = true;
142 adapter->req_rx_splitq = true;
143
144 switch (ent->device) {
145 case IDPF_DEV_ID_PF:
146 idpf_dev_ops_init(adapter);
147 break;
148 case IDPF_DEV_ID_VF:
149 idpf_vf_dev_ops_init(adapter);
150 adapter->crc_enable = true;
151 break;
152 default:
153 err = -ENODEV;
154 dev_err(&pdev->dev, "Unexpected dev ID 0x%x in idpf probe\n",
155 ent->device);
156 goto err_free;
157 }
158
159 adapter->pdev = pdev;
160 err = pcim_enable_device(pdev);
161 if (err)
162 goto err_free;
163
164 err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
165 if (err) {
166 pci_err(pdev, "pcim_iomap_regions failed %pe\n", ERR_PTR(err));
167
168 goto err_free;
169 }
170
171 /* set up for high or low dma */
172 err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
173 if (err) {
174 pci_err(pdev, "DMA configuration failed: %pe\n", ERR_PTR(err));
175
176 goto err_free;
177 }
178
179 pci_set_master(pdev);
180 pci_set_drvdata(pdev, adapter);
181
182 adapter->init_wq = alloc_workqueue("%s-%s-init",
183 WQ_UNBOUND | WQ_MEM_RECLAIM, 0,
184 dev_driver_string(dev),
185 dev_name(dev));
186 if (!adapter->init_wq) {
187 dev_err(dev, "Failed to allocate init workqueue\n");
188 err = -ENOMEM;
189 goto err_free;
190 }
191
192 adapter->serv_wq = alloc_workqueue("%s-%s-service",
193 WQ_UNBOUND | WQ_MEM_RECLAIM, 0,
194 dev_driver_string(dev),
195 dev_name(dev));
196 if (!adapter->serv_wq) {
197 dev_err(dev, "Failed to allocate service workqueue\n");
198 err = -ENOMEM;
199 goto err_serv_wq_alloc;
200 }
201
202 adapter->mbx_wq = alloc_workqueue("%s-%s-mbx",
203 WQ_UNBOUND | WQ_MEM_RECLAIM, 0,
204 dev_driver_string(dev),
205 dev_name(dev));
206 if (!adapter->mbx_wq) {
207 dev_err(dev, "Failed to allocate mailbox workqueue\n");
208 err = -ENOMEM;
209 goto err_mbx_wq_alloc;
210 }
211
212 adapter->stats_wq = alloc_workqueue("%s-%s-stats",
213 WQ_UNBOUND | WQ_MEM_RECLAIM, 0,
214 dev_driver_string(dev),
215 dev_name(dev));
216 if (!adapter->stats_wq) {
217 dev_err(dev, "Failed to allocate workqueue\n");
218 err = -ENOMEM;
219 goto err_stats_wq_alloc;
220 }
221
222 adapter->vc_event_wq = alloc_workqueue("%s-%s-vc_event",
223 WQ_UNBOUND | WQ_MEM_RECLAIM, 0,
224 dev_driver_string(dev),
225 dev_name(dev));
226 if (!adapter->vc_event_wq) {
227 dev_err(dev, "Failed to allocate virtchnl event workqueue\n");
228 err = -ENOMEM;
229 goto err_vc_event_wq_alloc;
230 }
231
232 /* setup msglvl */
233 adapter->msg_enable = netif_msg_init(-1, IDPF_AVAIL_NETIF_M);
234
235 err = idpf_cfg_hw(adapter);
236 if (err) {
237 dev_err(dev, "Failed to configure HW structure for adapter: %d\n",
238 err);
239 goto err_cfg_hw;
240 }
241
242 mutex_init(&adapter->vport_ctrl_lock);
243 mutex_init(&adapter->vector_lock);
244 mutex_init(&adapter->queue_lock);
245 mutex_init(&adapter->vc_buf_lock);
246
247 INIT_DELAYED_WORK(&adapter->init_task, idpf_init_task);
248 INIT_DELAYED_WORK(&adapter->serv_task, idpf_service_task);
249 INIT_DELAYED_WORK(&adapter->mbx_task, idpf_mbx_task);
250 INIT_DELAYED_WORK(&adapter->stats_task, idpf_statistics_task);
251 INIT_DELAYED_WORK(&adapter->vc_event_task, idpf_vc_event_task);
252
253 adapter->dev_ops.reg_ops.reset_reg_init(adapter);
254 set_bit(IDPF_HR_DRV_LOAD, adapter->flags);
255 queue_delayed_work(adapter->vc_event_wq, &adapter->vc_event_task,
256 msecs_to_jiffies(10 * (pdev->devfn & 0x07)));
257
258 return 0;
259
260 err_cfg_hw:
261 destroy_workqueue(adapter->vc_event_wq);
262 err_vc_event_wq_alloc:
263 destroy_workqueue(adapter->stats_wq);
264 err_stats_wq_alloc:
265 destroy_workqueue(adapter->mbx_wq);
266 err_mbx_wq_alloc:
267 destroy_workqueue(adapter->serv_wq);
268 err_serv_wq_alloc:
269 destroy_workqueue(adapter->init_wq);
270 err_free:
271 kfree(adapter);
272 return err;
273 }
274
275 /* idpf_pci_tbl - PCI Dev idpf ID Table
276 */
277 static const struct pci_device_id idpf_pci_tbl[] = {
278 { PCI_VDEVICE(INTEL, IDPF_DEV_ID_PF)},
279 { PCI_VDEVICE(INTEL, IDPF_DEV_ID_VF)},
280 { /* Sentinel */ }
281 };
282 MODULE_DEVICE_TABLE(pci, idpf_pci_tbl);
283
284 static struct pci_driver idpf_driver = {
285 .name = KBUILD_MODNAME,
286 .id_table = idpf_pci_tbl,
287 .probe = idpf_probe,
288 .sriov_configure = idpf_sriov_configure,
289 .remove = idpf_remove,
290 .shutdown = idpf_shutdown,
291 };
292 module_pci_driver(idpf_driver);
293