1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2022-2024, Advanced Micro Devices, Inc.
4 */
5
6#include <drm/amdxdna_accel.h>
7#include <drm/drm_accel.h>
8#include <drm/drm_drv.h>
9#include <drm/drm_gem.h>
10#include <drm/drm_gem_shmem_helper.h>
11#include <drm/drm_ioctl.h>
12#include <drm/drm_managed.h>
13#include <drm/gpu_scheduler.h>
14#include <linux/iommu.h>
15#include <linux/pci.h>
16#include <linux/pm_runtime.h>
17
18#include "amdxdna_ctx.h"
19#include "amdxdna_gem.h"
20#include "amdxdna_pci_drv.h"
21
22#define AMDXDNA_AUTOSUSPEND_DELAY 5000 /* milliseconds */
23
24MODULE_FIRMWARE("amdnpu/1502_00/npu.sbin");
25MODULE_FIRMWARE("amdnpu/17f0_10/npu.sbin");
26MODULE_FIRMWARE("amdnpu/17f0_11/npu.sbin");
27MODULE_FIRMWARE("amdnpu/17f0_20/npu.sbin");
28
29/*
30 * Bind the driver base on (vendor_id, device_id) pair and later use the
31 * (device_id, rev_id) pair as a key to select the devices. The devices with
32 * same device_id have very similar interface to host driver.
33 */
34static const struct pci_device_id pci_ids[] = {
35 { PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x1502) },
36 { PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x17f0) },
37 {0}
38};
39
40MODULE_DEVICE_TABLE(pci, pci_ids);
41
42static const struct amdxdna_device_id amdxdna_ids[] = {
43 { 0x1502, 0x0, &dev_npu1_info },
44 { 0x17f0, 0x0, &dev_npu2_info },
45 { 0x17f0, 0x10, &dev_npu4_info },
46 { 0x17f0, 0x11, &dev_npu5_info },
47 { 0x17f0, 0x20, &dev_npu6_info },
48 {0}
49};
50
51static int amdxdna_drm_open(struct drm_device *ddev, struct drm_file *filp)
52{
53 struct amdxdna_dev *xdna = to_xdna_dev(ddev);
54 struct amdxdna_client *client;
55 int ret;
56
57 ret = pm_runtime_resume_and_get(dev: ddev->dev);
58 if (ret) {
59 XDNA_ERR(xdna, "Failed to get rpm, ret %d", ret);
60 return ret;
61 }
62
63 client = kzalloc(sizeof(*client), GFP_KERNEL);
64 if (!client) {
65 ret = -ENOMEM;
66 goto put_rpm;
67 }
68
69 client->pid = pid_nr(rcu_access_pointer(filp->pid));
70 client->xdna = xdna;
71
72 client->sva = iommu_sva_bind_device(dev: xdna->ddev.dev, current->mm);
73 if (IS_ERR(ptr: client->sva)) {
74 ret = PTR_ERR(ptr: client->sva);
75 XDNA_ERR(xdna, "SVA bind device failed, ret %d", ret);
76 goto failed;
77 }
78 client->pasid = iommu_sva_get_pasid(handle: client->sva);
79 if (client->pasid == IOMMU_PASID_INVALID) {
80 XDNA_ERR(xdna, "SVA get pasid failed");
81 ret = -ENODEV;
82 goto unbind_sva;
83 }
84 mutex_init(&client->hwctx_lock);
85 init_srcu_struct(&client->hwctx_srcu);
86 xa_init_flags(xa: &client->hwctx_xa, XA_FLAGS_ALLOC);
87 mutex_init(&client->mm_lock);
88
89 mutex_lock(&xdna->dev_lock);
90 list_add_tail(new: &client->node, head: &xdna->client_list);
91 mutex_unlock(lock: &xdna->dev_lock);
92
93 filp->driver_priv = client;
94 client->filp = filp;
95
96 XDNA_DBG(xdna, "pid %d opened", client->pid);
97 return 0;
98
99unbind_sva:
100 iommu_sva_unbind_device(handle: client->sva);
101failed:
102 kfree(objp: client);
103put_rpm:
104 pm_runtime_mark_last_busy(dev: ddev->dev);
105 pm_runtime_put_autosuspend(dev: ddev->dev);
106
107 return ret;
108}
109
110static void amdxdna_drm_close(struct drm_device *ddev, struct drm_file *filp)
111{
112 struct amdxdna_client *client = filp->driver_priv;
113 struct amdxdna_dev *xdna = to_xdna_dev(ddev);
114
115 XDNA_DBG(xdna, "closing pid %d", client->pid);
116
117 xa_destroy(&client->hwctx_xa);
118 cleanup_srcu_struct(ssp: &client->hwctx_srcu);
119 mutex_destroy(lock: &client->hwctx_lock);
120 mutex_destroy(lock: &client->mm_lock);
121 if (client->dev_heap)
122 drm_gem_object_put(to_gobj(client->dev_heap));
123
124 iommu_sva_unbind_device(handle: client->sva);
125
126 XDNA_DBG(xdna, "pid %d closed", client->pid);
127 kfree(objp: client);
128 pm_runtime_mark_last_busy(dev: ddev->dev);
129 pm_runtime_put_autosuspend(dev: ddev->dev);
130}
131
132static int amdxdna_flush(struct file *f, fl_owner_t id)
133{
134 struct drm_file *filp = f->private_data;
135 struct amdxdna_client *client = filp->driver_priv;
136 struct amdxdna_dev *xdna = client->xdna;
137 int idx;
138
139 XDNA_DBG(xdna, "PID %d flushing...", client->pid);
140 if (!drm_dev_enter(dev: &xdna->ddev, idx: &idx))
141 return 0;
142
143 mutex_lock(&xdna->dev_lock);
144 list_del_init(entry: &client->node);
145 mutex_unlock(lock: &xdna->dev_lock);
146 amdxdna_hwctx_remove_all(client);
147
148 drm_dev_exit(idx);
149 return 0;
150}
151
152static int amdxdna_drm_get_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
153{
154 struct amdxdna_client *client = filp->driver_priv;
155 struct amdxdna_dev *xdna = to_xdna_dev(dev);
156 struct amdxdna_drm_get_info *args = data;
157 int ret;
158
159 if (!xdna->dev_info->ops->get_aie_info)
160 return -EOPNOTSUPP;
161
162 XDNA_DBG(xdna, "Request parameter %u", args->param);
163 mutex_lock(&xdna->dev_lock);
164 ret = xdna->dev_info->ops->get_aie_info(client, args);
165 mutex_unlock(lock: &xdna->dev_lock);
166 return ret;
167}
168
169static int amdxdna_drm_set_state_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
170{
171 struct amdxdna_client *client = filp->driver_priv;
172 struct amdxdna_dev *xdna = to_xdna_dev(dev);
173 struct amdxdna_drm_set_state *args = data;
174 int ret;
175
176 if (!xdna->dev_info->ops->set_aie_state)
177 return -EOPNOTSUPP;
178
179 XDNA_DBG(xdna, "Request parameter %u", args->param);
180 mutex_lock(&xdna->dev_lock);
181 ret = xdna->dev_info->ops->set_aie_state(client, args);
182 mutex_unlock(lock: &xdna->dev_lock);
183
184 return ret;
185}
186
187static const struct drm_ioctl_desc amdxdna_drm_ioctls[] = {
188 /* Context */
189 DRM_IOCTL_DEF_DRV(AMDXDNA_CREATE_HWCTX, amdxdna_drm_create_hwctx_ioctl, 0),
190 DRM_IOCTL_DEF_DRV(AMDXDNA_DESTROY_HWCTX, amdxdna_drm_destroy_hwctx_ioctl, 0),
191 DRM_IOCTL_DEF_DRV(AMDXDNA_CONFIG_HWCTX, amdxdna_drm_config_hwctx_ioctl, 0),
192 /* BO */
193 DRM_IOCTL_DEF_DRV(AMDXDNA_CREATE_BO, amdxdna_drm_create_bo_ioctl, 0),
194 DRM_IOCTL_DEF_DRV(AMDXDNA_GET_BO_INFO, amdxdna_drm_get_bo_info_ioctl, 0),
195 DRM_IOCTL_DEF_DRV(AMDXDNA_SYNC_BO, amdxdna_drm_sync_bo_ioctl, 0),
196 /* Execution */
197 DRM_IOCTL_DEF_DRV(AMDXDNA_EXEC_CMD, amdxdna_drm_submit_cmd_ioctl, 0),
198 /* AIE hardware */
199 DRM_IOCTL_DEF_DRV(AMDXDNA_GET_INFO, amdxdna_drm_get_info_ioctl, 0),
200 DRM_IOCTL_DEF_DRV(AMDXDNA_SET_STATE, amdxdna_drm_set_state_ioctl, DRM_ROOT_ONLY),
201};
202
203static const struct file_operations amdxdna_fops = {
204 .owner = THIS_MODULE,
205 .open = accel_open,
206 .release = drm_release,
207 .flush = amdxdna_flush,
208 .unlocked_ioctl = drm_ioctl,
209 .compat_ioctl = drm_compat_ioctl,
210 .poll = drm_poll,
211 .read = drm_read,
212 .llseek = noop_llseek,
213 .mmap = drm_gem_mmap,
214 .fop_flags = FOP_UNSIGNED_OFFSET,
215};
216
217const struct drm_driver amdxdna_drm_drv = {
218 .driver_features = DRIVER_GEM | DRIVER_COMPUTE_ACCEL |
219 DRIVER_SYNCOBJ | DRIVER_SYNCOBJ_TIMELINE,
220 .fops = &amdxdna_fops,
221 .name = "amdxdna_accel_driver",
222 .desc = "AMD XDNA DRM implementation",
223 .open = amdxdna_drm_open,
224 .postclose = amdxdna_drm_close,
225 .ioctls = amdxdna_drm_ioctls,
226 .num_ioctls = ARRAY_SIZE(amdxdna_drm_ioctls),
227
228 .gem_create_object = amdxdna_gem_create_object_cb,
229 .gem_prime_import = amdxdna_gem_prime_import,
230};
231
232static const struct amdxdna_dev_info *
233amdxdna_get_dev_info(struct pci_dev *pdev)
234{
235 int i;
236
237 for (i = 0; i < ARRAY_SIZE(amdxdna_ids); i++) {
238 if (pdev->device == amdxdna_ids[i].device &&
239 pdev->revision == amdxdna_ids[i].revision)
240 return amdxdna_ids[i].dev_info;
241 }
242 return NULL;
243}
244
245static int amdxdna_probe(struct pci_dev *pdev, const struct pci_device_id *id)
246{
247 struct device *dev = &pdev->dev;
248 struct amdxdna_dev *xdna;
249 int ret;
250
251 xdna = devm_drm_dev_alloc(dev, &amdxdna_drm_drv, typeof(*xdna), ddev);
252 if (IS_ERR(ptr: xdna))
253 return PTR_ERR(ptr: xdna);
254
255 xdna->dev_info = amdxdna_get_dev_info(pdev);
256 if (!xdna->dev_info)
257 return -ENODEV;
258
259 drmm_mutex_init(&xdna->ddev, &xdna->dev_lock);
260 init_rwsem(&xdna->notifier_lock);
261 INIT_LIST_HEAD(list: &xdna->client_list);
262 pci_set_drvdata(pdev, data: xdna);
263
264 if (IS_ENABLED(CONFIG_LOCKDEP)) {
265 fs_reclaim_acquire(GFP_KERNEL);
266 might_lock(&xdna->notifier_lock);
267 fs_reclaim_release(GFP_KERNEL);
268 }
269
270 xdna->notifier_wq = alloc_ordered_workqueue("notifier_wq", 0);
271 if (!xdna->notifier_wq)
272 return -ENOMEM;
273
274 mutex_lock(&xdna->dev_lock);
275 ret = xdna->dev_info->ops->init(xdna);
276 mutex_unlock(lock: &xdna->dev_lock);
277 if (ret) {
278 XDNA_ERR(xdna, "Hardware init failed, ret %d", ret);
279 goto destroy_notifier_wq;
280 }
281
282 ret = amdxdna_sysfs_init(xdna);
283 if (ret) {
284 XDNA_ERR(xdna, "Create amdxdna attrs failed: %d", ret);
285 goto failed_dev_fini;
286 }
287
288 pm_runtime_set_autosuspend_delay(dev, AMDXDNA_AUTOSUSPEND_DELAY);
289 pm_runtime_use_autosuspend(dev);
290 pm_runtime_allow(dev);
291
292 ret = drm_dev_register(dev: &xdna->ddev, flags: 0);
293 if (ret) {
294 XDNA_ERR(xdna, "DRM register failed, ret %d", ret);
295 pm_runtime_forbid(dev);
296 goto failed_sysfs_fini;
297 }
298
299 pm_runtime_mark_last_busy(dev);
300 pm_runtime_put_autosuspend(dev);
301 return 0;
302
303failed_sysfs_fini:
304 amdxdna_sysfs_fini(xdna);
305failed_dev_fini:
306 mutex_lock(&xdna->dev_lock);
307 xdna->dev_info->ops->fini(xdna);
308 mutex_unlock(lock: &xdna->dev_lock);
309destroy_notifier_wq:
310 destroy_workqueue(wq: xdna->notifier_wq);
311 return ret;
312}
313
314static void amdxdna_remove(struct pci_dev *pdev)
315{
316 struct amdxdna_dev *xdna = pci_get_drvdata(pdev);
317 struct device *dev = &pdev->dev;
318 struct amdxdna_client *client;
319
320 destroy_workqueue(wq: xdna->notifier_wq);
321
322 pm_runtime_get_noresume(dev);
323 pm_runtime_forbid(dev);
324
325 drm_dev_unplug(dev: &xdna->ddev);
326 amdxdna_sysfs_fini(xdna);
327
328 mutex_lock(&xdna->dev_lock);
329 client = list_first_entry_or_null(&xdna->client_list,
330 struct amdxdna_client, node);
331 while (client) {
332 list_del_init(entry: &client->node);
333 mutex_unlock(lock: &xdna->dev_lock);
334
335 amdxdna_hwctx_remove_all(client);
336
337 mutex_lock(&xdna->dev_lock);
338 client = list_first_entry_or_null(&xdna->client_list,
339 struct amdxdna_client, node);
340 }
341
342 xdna->dev_info->ops->fini(xdna);
343 mutex_unlock(lock: &xdna->dev_lock);
344}
345
346static int amdxdna_dev_suspend_nolock(struct amdxdna_dev *xdna)
347{
348 if (xdna->dev_info->ops->suspend)
349 xdna->dev_info->ops->suspend(xdna);
350
351 return 0;
352}
353
354static int amdxdna_dev_resume_nolock(struct amdxdna_dev *xdna)
355{
356 if (xdna->dev_info->ops->resume)
357 return xdna->dev_info->ops->resume(xdna);
358
359 return 0;
360}
361
362static int amdxdna_pmops_suspend(struct device *dev)
363{
364 struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev));
365 struct amdxdna_client *client;
366
367 mutex_lock(&xdna->dev_lock);
368 list_for_each_entry(client, &xdna->client_list, node)
369 amdxdna_hwctx_suspend(client);
370
371 amdxdna_dev_suspend_nolock(xdna);
372 mutex_unlock(lock: &xdna->dev_lock);
373
374 return 0;
375}
376
377static int amdxdna_pmops_resume(struct device *dev)
378{
379 struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev));
380 struct amdxdna_client *client;
381 int ret;
382
383 XDNA_INFO(xdna, "firmware resuming...");
384 mutex_lock(&xdna->dev_lock);
385 ret = amdxdna_dev_resume_nolock(xdna);
386 if (ret) {
387 XDNA_ERR(xdna, "resume NPU firmware failed");
388 mutex_unlock(lock: &xdna->dev_lock);
389 return ret;
390 }
391
392 XDNA_INFO(xdna, "hardware context resuming...");
393 list_for_each_entry(client, &xdna->client_list, node)
394 amdxdna_hwctx_resume(client);
395 mutex_unlock(lock: &xdna->dev_lock);
396
397 return 0;
398}
399
400static int amdxdna_rpmops_suspend(struct device *dev)
401{
402 struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev));
403 int ret;
404
405 mutex_lock(&xdna->dev_lock);
406 ret = amdxdna_dev_suspend_nolock(xdna);
407 mutex_unlock(lock: &xdna->dev_lock);
408
409 XDNA_DBG(xdna, "Runtime suspend done ret: %d", ret);
410 return ret;
411}
412
413static int amdxdna_rpmops_resume(struct device *dev)
414{
415 struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev));
416 int ret;
417
418 mutex_lock(&xdna->dev_lock);
419 ret = amdxdna_dev_resume_nolock(xdna);
420 mutex_unlock(lock: &xdna->dev_lock);
421
422 XDNA_DBG(xdna, "Runtime resume done ret: %d", ret);
423 return ret;
424}
425
426static const struct dev_pm_ops amdxdna_pm_ops = {
427 SYSTEM_SLEEP_PM_OPS(amdxdna_pmops_suspend, amdxdna_pmops_resume)
428 RUNTIME_PM_OPS(amdxdna_rpmops_suspend, amdxdna_rpmops_resume, NULL)
429};
430
431static struct pci_driver amdxdna_pci_driver = {
432 .name = KBUILD_MODNAME,
433 .id_table = pci_ids,
434 .probe = amdxdna_probe,
435 .remove = amdxdna_remove,
436 .driver.pm = &amdxdna_pm_ops,
437};
438
439module_pci_driver(amdxdna_pci_driver);
440
441MODULE_LICENSE("GPL");
442MODULE_AUTHOR("XRT Team <runtimeca39d@amd.com>");
443MODULE_DESCRIPTION("amdxdna driver");
444

source code of linux/drivers/accel/amdxdna/amdxdna_pci_drv.c