diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 498859259b55..b7ee79b5220a 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -3045,6 +3045,13 @@ static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, v &args->query_debug_event.exception_mask); break; case KFD_IOC_DBG_TRAP_QUERY_EXCEPTION_INFO: + r = kfd_dbg_trap_query_exception_info(target, + args->query_exception_info.source_id, + args->query_exception_info.exception_code, + args->query_exception_info.clear_exception, + (void __user *)args->query_exception_info.info_ptr, + &args->query_exception_info.info_size); + break; case KFD_IOC_DBG_TRAP_GET_QUEUE_SNAPSHOT: case KFD_IOC_DBG_TRAP_GET_DEVICE_SNAPSHOT: pr_warn("Debug op %i not supported yet\n", args->op); diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c index e9530e682e85..24e2b285448a 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c @@ -890,6 +890,126 @@ int kfd_dbg_trap_set_wave_launch_mode(struct kfd_process *target, return r; } +int kfd_dbg_trap_query_exception_info(struct kfd_process *target, + uint32_t source_id, + uint32_t exception_code, + bool clear_exception, + void __user *info, + uint32_t *info_size) +{ + bool found = false; + int r = 0; + uint32_t copy_size, actual_info_size = 0; + uint64_t *exception_status_ptr = NULL; + + if (!target) + return -EINVAL; + + if (!info || !info_size) + return -EINVAL; + + mutex_lock(&target->event_mutex); + + if (KFD_DBG_EC_TYPE_IS_QUEUE(exception_code)) { + /* Per queue exceptions */ + struct queue *queue = NULL; + int i; + + for (i = 0; i < target->n_pdds; i++) { + struct kfd_process_device *pdd = target->pdds[i]; + struct qcm_process_device *qpd = &pdd->qpd; + + list_for_each_entry(queue, &qpd->queues_list, list) { + if (!found && queue->properties.queue_id == source_id) { + found = true; + break; + } + } + if (found) + break; + } + + if (!found) { + r = -EINVAL; + goto out; + } + + if (!(queue->properties.exception_status & KFD_EC_MASK(exception_code))) { + r = -ENODATA; + goto out; + } + exception_status_ptr = &queue->properties.exception_status; + } else if (KFD_DBG_EC_TYPE_IS_DEVICE(exception_code)) { + /* Per device exceptions */ + struct kfd_process_device *pdd = NULL; + int i; + + for (i = 0; i < target->n_pdds; i++) { + pdd = target->pdds[i]; + if (pdd->dev->id == source_id) { + found = true; + break; + } + } + + if (!found) { + r = -EINVAL; + goto out; + } + + if (!(pdd->exception_status & KFD_EC_MASK(exception_code))) { + r = -ENODATA; + goto out; + } + + if (exception_code == EC_DEVICE_MEMORY_VIOLATION) { + copy_size = min((size_t)(*info_size), pdd->vm_fault_exc_data_size); + + if (copy_to_user(info, pdd->vm_fault_exc_data, copy_size)) { + r = -EFAULT; + goto out; + } + actual_info_size = pdd->vm_fault_exc_data_size; + if (clear_exception) { + kfree(pdd->vm_fault_exc_data); + pdd->vm_fault_exc_data = NULL; + pdd->vm_fault_exc_data_size = 0; + } + } + exception_status_ptr = &pdd->exception_status; + } else if (KFD_DBG_EC_TYPE_IS_PROCESS(exception_code)) { + /* Per process exceptions */ + if (!(target->exception_status & KFD_EC_MASK(exception_code))) { + r = -ENODATA; + goto out; + } + + if (exception_code == EC_PROCESS_RUNTIME) { + copy_size = min((size_t)(*info_size), sizeof(target->runtime_info)); + + if (copy_to_user(info, (void *)&target->runtime_info, copy_size)) { + r = -EFAULT; + goto out; + } + + actual_info_size = sizeof(target->runtime_info); + } + + exception_status_ptr = &target->exception_status; + } else { + pr_debug("Bad exception type [%i]\n", exception_code); + r = -EINVAL; + goto out; + } + + *info_size = actual_info_size; + if (clear_exception) + *exception_status_ptr &= ~KFD_EC_MASK(exception_code); +out: + mutex_unlock(&target->event_mutex); + return r; +} + void kfd_dbg_set_enabled_debug_exception_mask(struct kfd_process *target, uint64_t exception_set_mask) { diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h index e78f954c0684..234e2ccafa87 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h @@ -63,6 +63,12 @@ int kfd_dbg_trap_set_dev_address_watch(struct kfd_process_device *pdd, uint32_t *watch_id, uint32_t watch_mode); int kfd_dbg_trap_set_flags(struct kfd_process *target, uint32_t *flags); +int kfd_dbg_trap_query_exception_info(struct kfd_process *target, + uint32_t source_id, + uint32_t exception_code, + bool clear_exception, + void __user *info, + uint32_t *info_size); int kfd_dbg_send_exception_to_runtime(struct kfd_process *p, unsigned int dev_id, unsigned int queue_id,