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 24 MODULE_FIRMWARE("amdnpu/1502_00/npu.sbin"); 25 MODULE_FIRMWARE("amdnpu/17f0_10/npu.sbin"); 26 MODULE_FIRMWARE("amdnpu/17f0_11/npu.sbin"); 27 MODULE_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 */ 34 static 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 40 MODULE_DEVICE_TABLE(pci, pci_ids); 41 42 static 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 51 static 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(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(xdna->ddev.dev, current->mm); 73 if (IS_ERR(client->sva)) { 74 ret = PTR_ERR(client->sva); 75 XDNA_ERR(xdna, "SVA bind device failed, ret %d", ret); 76 goto failed; 77 } 78 client->pasid = iommu_sva_get_pasid(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 init_srcu_struct(&client->hwctx_srcu); 85 xa_init_flags(&client->hwctx_xa, XA_FLAGS_ALLOC); 86 mutex_init(&client->mm_lock); 87 88 mutex_lock(&xdna->dev_lock); 89 list_add_tail(&client->node, &xdna->client_list); 90 mutex_unlock(&xdna->dev_lock); 91 92 filp->driver_priv = client; 93 client->filp = filp; 94 95 XDNA_DBG(xdna, "pid %d opened", client->pid); 96 return 0; 97 98 unbind_sva: 99 iommu_sva_unbind_device(client->sva); 100 failed: 101 kfree(client); 102 put_rpm: 103 pm_runtime_mark_last_busy(ddev->dev); 104 pm_runtime_put_autosuspend(ddev->dev); 105 106 return ret; 107 } 108 109 static void amdxdna_drm_close(struct drm_device *ddev, struct drm_file *filp) 110 { 111 struct amdxdna_client *client = filp->driver_priv; 112 struct amdxdna_dev *xdna = to_xdna_dev(ddev); 113 114 XDNA_DBG(xdna, "closing pid %d", client->pid); 115 116 xa_destroy(&client->hwctx_xa); 117 cleanup_srcu_struct(&client->hwctx_srcu); 118 mutex_destroy(&client->mm_lock); 119 if (client->dev_heap) 120 drm_gem_object_put(to_gobj(client->dev_heap)); 121 122 iommu_sva_unbind_device(client->sva); 123 124 XDNA_DBG(xdna, "pid %d closed", client->pid); 125 kfree(client); 126 pm_runtime_mark_last_busy(ddev->dev); 127 pm_runtime_put_autosuspend(ddev->dev); 128 } 129 130 static int amdxdna_flush(struct file *f, fl_owner_t id) 131 { 132 struct drm_file *filp = f->private_data; 133 struct amdxdna_client *client = filp->driver_priv; 134 struct amdxdna_dev *xdna = client->xdna; 135 int idx; 136 137 XDNA_DBG(xdna, "PID %d flushing...", client->pid); 138 if (!drm_dev_enter(&xdna->ddev, &idx)) 139 return 0; 140 141 mutex_lock(&xdna->dev_lock); 142 list_del_init(&client->node); 143 amdxdna_hwctx_remove_all(client); 144 mutex_unlock(&xdna->dev_lock); 145 146 drm_dev_exit(idx); 147 return 0; 148 } 149 150 static int amdxdna_drm_get_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) 151 { 152 struct amdxdna_client *client = filp->driver_priv; 153 struct amdxdna_dev *xdna = to_xdna_dev(dev); 154 struct amdxdna_drm_get_info *args = data; 155 int ret; 156 157 if (!xdna->dev_info->ops->get_aie_info) 158 return -EOPNOTSUPP; 159 160 XDNA_DBG(xdna, "Request parameter %u", args->param); 161 mutex_lock(&xdna->dev_lock); 162 ret = xdna->dev_info->ops->get_aie_info(client, args); 163 mutex_unlock(&xdna->dev_lock); 164 return ret; 165 } 166 167 static int amdxdna_drm_set_state_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) 168 { 169 struct amdxdna_client *client = filp->driver_priv; 170 struct amdxdna_dev *xdna = to_xdna_dev(dev); 171 struct amdxdna_drm_set_state *args = data; 172 int ret; 173 174 if (!xdna->dev_info->ops->set_aie_state) 175 return -EOPNOTSUPP; 176 177 XDNA_DBG(xdna, "Request parameter %u", args->param); 178 mutex_lock(&xdna->dev_lock); 179 ret = xdna->dev_info->ops->set_aie_state(client, args); 180 mutex_unlock(&xdna->dev_lock); 181 182 return ret; 183 } 184 185 static const struct drm_ioctl_desc amdxdna_drm_ioctls[] = { 186 /* Context */ 187 DRM_IOCTL_DEF_DRV(AMDXDNA_CREATE_HWCTX, amdxdna_drm_create_hwctx_ioctl, 0), 188 DRM_IOCTL_DEF_DRV(AMDXDNA_DESTROY_HWCTX, amdxdna_drm_destroy_hwctx_ioctl, 0), 189 DRM_IOCTL_DEF_DRV(AMDXDNA_CONFIG_HWCTX, amdxdna_drm_config_hwctx_ioctl, 0), 190 /* BO */ 191 DRM_IOCTL_DEF_DRV(AMDXDNA_CREATE_BO, amdxdna_drm_create_bo_ioctl, 0), 192 DRM_IOCTL_DEF_DRV(AMDXDNA_GET_BO_INFO, amdxdna_drm_get_bo_info_ioctl, 0), 193 DRM_IOCTL_DEF_DRV(AMDXDNA_SYNC_BO, amdxdna_drm_sync_bo_ioctl, 0), 194 /* Execution */ 195 DRM_IOCTL_DEF_DRV(AMDXDNA_EXEC_CMD, amdxdna_drm_submit_cmd_ioctl, 0), 196 /* AIE hardware */ 197 DRM_IOCTL_DEF_DRV(AMDXDNA_GET_INFO, amdxdna_drm_get_info_ioctl, 0), 198 DRM_IOCTL_DEF_DRV(AMDXDNA_SET_STATE, amdxdna_drm_set_state_ioctl, DRM_ROOT_ONLY), 199 }; 200 201 static const struct file_operations amdxdna_fops = { 202 .owner = THIS_MODULE, 203 .open = accel_open, 204 .release = drm_release, 205 .flush = amdxdna_flush, 206 .unlocked_ioctl = drm_ioctl, 207 .compat_ioctl = drm_compat_ioctl, 208 .poll = drm_poll, 209 .read = drm_read, 210 .llseek = noop_llseek, 211 .mmap = drm_gem_mmap, 212 .fop_flags = FOP_UNSIGNED_OFFSET, 213 }; 214 215 const struct drm_driver amdxdna_drm_drv = { 216 .driver_features = DRIVER_GEM | DRIVER_COMPUTE_ACCEL | 217 DRIVER_SYNCOBJ | DRIVER_SYNCOBJ_TIMELINE, 218 .fops = &amdxdna_fops, 219 .name = "amdxdna_accel_driver", 220 .desc = "AMD XDNA DRM implementation", 221 .open = amdxdna_drm_open, 222 .postclose = amdxdna_drm_close, 223 .ioctls = amdxdna_drm_ioctls, 224 .num_ioctls = ARRAY_SIZE(amdxdna_drm_ioctls), 225 226 .gem_create_object = amdxdna_gem_create_object_cb, 227 .gem_prime_import = amdxdna_gem_prime_import, 228 }; 229 230 static const struct amdxdna_dev_info * 231 amdxdna_get_dev_info(struct pci_dev *pdev) 232 { 233 int i; 234 235 for (i = 0; i < ARRAY_SIZE(amdxdna_ids); i++) { 236 if (pdev->device == amdxdna_ids[i].device && 237 pdev->revision == amdxdna_ids[i].revision) 238 return amdxdna_ids[i].dev_info; 239 } 240 return NULL; 241 } 242 243 static int amdxdna_probe(struct pci_dev *pdev, const struct pci_device_id *id) 244 { 245 struct device *dev = &pdev->dev; 246 struct amdxdna_dev *xdna; 247 int ret; 248 249 xdna = devm_drm_dev_alloc(dev, &amdxdna_drm_drv, typeof(*xdna), ddev); 250 if (IS_ERR(xdna)) 251 return PTR_ERR(xdna); 252 253 xdna->dev_info = amdxdna_get_dev_info(pdev); 254 if (!xdna->dev_info) 255 return -ENODEV; 256 257 drmm_mutex_init(&xdna->ddev, &xdna->dev_lock); 258 init_rwsem(&xdna->notifier_lock); 259 INIT_LIST_HEAD(&xdna->client_list); 260 pci_set_drvdata(pdev, xdna); 261 262 if (IS_ENABLED(CONFIG_LOCKDEP)) { 263 fs_reclaim_acquire(GFP_KERNEL); 264 might_lock(&xdna->notifier_lock); 265 fs_reclaim_release(GFP_KERNEL); 266 } 267 268 xdna->notifier_wq = alloc_ordered_workqueue("notifier_wq", 0); 269 if (!xdna->notifier_wq) 270 return -ENOMEM; 271 272 mutex_lock(&xdna->dev_lock); 273 ret = xdna->dev_info->ops->init(xdna); 274 mutex_unlock(&xdna->dev_lock); 275 if (ret) { 276 XDNA_ERR(xdna, "Hardware init failed, ret %d", ret); 277 goto destroy_notifier_wq; 278 } 279 280 ret = amdxdna_sysfs_init(xdna); 281 if (ret) { 282 XDNA_ERR(xdna, "Create amdxdna attrs failed: %d", ret); 283 goto failed_dev_fini; 284 } 285 286 pm_runtime_set_autosuspend_delay(dev, AMDXDNA_AUTOSUSPEND_DELAY); 287 pm_runtime_use_autosuspend(dev); 288 pm_runtime_allow(dev); 289 290 ret = drm_dev_register(&xdna->ddev, 0); 291 if (ret) { 292 XDNA_ERR(xdna, "DRM register failed, ret %d", ret); 293 pm_runtime_forbid(dev); 294 goto failed_sysfs_fini; 295 } 296 297 pm_runtime_mark_last_busy(dev); 298 pm_runtime_put_autosuspend(dev); 299 return 0; 300 301 failed_sysfs_fini: 302 amdxdna_sysfs_fini(xdna); 303 failed_dev_fini: 304 mutex_lock(&xdna->dev_lock); 305 xdna->dev_info->ops->fini(xdna); 306 mutex_unlock(&xdna->dev_lock); 307 destroy_notifier_wq: 308 destroy_workqueue(xdna->notifier_wq); 309 return ret; 310 } 311 312 static void amdxdna_remove(struct pci_dev *pdev) 313 { 314 struct amdxdna_dev *xdna = pci_get_drvdata(pdev); 315 struct device *dev = &pdev->dev; 316 struct amdxdna_client *client; 317 318 destroy_workqueue(xdna->notifier_wq); 319 320 pm_runtime_get_noresume(dev); 321 pm_runtime_forbid(dev); 322 323 drm_dev_unplug(&xdna->ddev); 324 amdxdna_sysfs_fini(xdna); 325 326 mutex_lock(&xdna->dev_lock); 327 client = list_first_entry_or_null(&xdna->client_list, 328 struct amdxdna_client, node); 329 while (client) { 330 list_del_init(&client->node); 331 amdxdna_hwctx_remove_all(client); 332 333 client = list_first_entry_or_null(&xdna->client_list, 334 struct amdxdna_client, node); 335 } 336 337 xdna->dev_info->ops->fini(xdna); 338 mutex_unlock(&xdna->dev_lock); 339 } 340 341 static int amdxdna_pmops_suspend(struct device *dev) 342 { 343 struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev)); 344 345 if (!xdna->dev_info->ops->suspend) 346 return -EOPNOTSUPP; 347 348 return xdna->dev_info->ops->suspend(xdna); 349 } 350 351 static int amdxdna_pmops_resume(struct device *dev) 352 { 353 struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev)); 354 355 if (!xdna->dev_info->ops->resume) 356 return -EOPNOTSUPP; 357 358 return xdna->dev_info->ops->resume(xdna); 359 } 360 361 static const struct dev_pm_ops amdxdna_pm_ops = { 362 SYSTEM_SLEEP_PM_OPS(amdxdna_pmops_suspend, amdxdna_pmops_resume) 363 RUNTIME_PM_OPS(amdxdna_pmops_suspend, amdxdna_pmops_resume, NULL) 364 }; 365 366 static struct pci_driver amdxdna_pci_driver = { 367 .name = KBUILD_MODNAME, 368 .id_table = pci_ids, 369 .probe = amdxdna_probe, 370 .remove = amdxdna_remove, 371 .driver.pm = &amdxdna_pm_ops, 372 }; 373 374 module_pci_driver(amdxdna_pci_driver); 375 376 MODULE_LICENSE("GPL"); 377 MODULE_AUTHOR("XRT Team <runtimeca39d@amd.com>"); 378 MODULE_DESCRIPTION("amdxdna driver"); 379