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