1 files changed, 434 insertions, 0 deletions

diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.c b/drivers/accel/amdxdna/amdxdna_pci_drv.c
new file mode 100644
index 000000000000..f5b8497cf5ad
--- /dev/null
+++ b/drivers/accel/amdxdna/amdxdna_pci_drv.c
@@ -0,0 +1,434 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022-2024, Advanced Micro Devices, Inc.
+ */
+
+#include <drm/amdxdna_accel.h>
+#include <drm/drm_accel.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_gem.h>
+#include <drm/drm_gem_shmem_helper.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_managed.h>
+#include <drm/gpu_scheduler.h>
+#include <linux/iommu.h>
+#include <linux/pci.h>
+#include <linux/pm_runtime.h>
+
+#include "amdxdna_ctx.h"
+#include "amdxdna_gem.h"
+#include "amdxdna_pci_drv.h"
+
+#define AMDXDNA_AUTOSUSPEND_DELAY	5000 /* milliseconds */
+
+MODULE_FIRMWARE("amdnpu/1502_00/npu.sbin");
+MODULE_FIRMWARE("amdnpu/17f0_10/npu.sbin");
+MODULE_FIRMWARE("amdnpu/17f0_11/npu.sbin");
+MODULE_FIRMWARE("amdnpu/17f0_20/npu.sbin");
+
+/*
+ * Bind the driver base on (vendor_id, device_id) pair and later use the
+ * (device_id, rev_id) pair as a key to select the devices. The devices with
+ * same device_id have very similar interface to host driver.
+ */
+static const struct pci_device_id pci_ids[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x1502) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x17f0) },
+	{0}
+};
+
+MODULE_DEVICE_TABLE(pci, pci_ids);
+
+static const struct amdxdna_device_id amdxdna_ids[] = {
+	{ 0x1502, 0x0,  &dev_npu1_info },
+	{ 0x17f0, 0x0,  &dev_npu2_info },
+	{ 0x17f0, 0x10, &dev_npu4_info },
+	{ 0x17f0, 0x11, &dev_npu5_info },
+	{ 0x17f0, 0x20, &dev_npu6_info },
+	{0}
+};
+
+static int amdxdna_drm_open(struct drm_device *ddev, struct drm_file *filp)
+{
+	struct amdxdna_dev *xdna = to_xdna_dev(ddev);
+	struct amdxdna_client *client;
+	int ret;
+
+	ret = pm_runtime_resume_and_get(ddev->dev);
+	if (ret) {
+		XDNA_ERR(xdna, "Failed to get rpm, ret %d", ret);
+		return ret;
+	}
+
+	client = kzalloc(sizeof(*client), GFP_KERNEL);
+	if (!client) {
+		ret = -ENOMEM;
+		goto put_rpm;
+	}
+
+	client->pid = pid_nr(rcu_access_pointer(filp->pid));
+	client->xdna = xdna;
+
+	client->sva = iommu_sva_bind_device(xdna->ddev.dev, current->mm);
+	if (IS_ERR(client->sva)) {
+		ret = PTR_ERR(client->sva);
+		XDNA_ERR(xdna, "SVA bind device failed, ret %d", ret);
+		goto failed;
+	}
+	client->pasid = iommu_sva_get_pasid(client->sva);
+	if (client->pasid == IOMMU_PASID_INVALID) {
+		XDNA_ERR(xdna, "SVA get pasid failed");
+		ret = -ENODEV;
+		goto unbind_sva;
+	}
+	mutex_init(&client->hwctx_lock);
+	init_srcu_struct(&client->hwctx_srcu);
+	xa_init_flags(&client->hwctx_xa, XA_FLAGS_ALLOC);
+	mutex_init(&client->mm_lock);
+
+	mutex_lock(&xdna->dev_lock);
+	list_add_tail(&client->node, &xdna->client_list);
+	mutex_unlock(&xdna->dev_lock);
+
+	filp->driver_priv = client;
+	client->filp = filp;
+
+	XDNA_DBG(xdna, "pid %d opened", client->pid);
+	return 0;
+
+unbind_sva:
+	iommu_sva_unbind_device(client->sva);
+failed:
+	kfree(client);
+put_rpm:
+	pm_runtime_mark_last_busy(ddev->dev);
+	pm_runtime_put_autosuspend(ddev->dev);
+
+	return ret;
+}
+
+static void amdxdna_drm_close(struct drm_device *ddev, struct drm_file *filp)
+{
+	struct amdxdna_client *client = filp->driver_priv;
+	struct amdxdna_dev *xdna = to_xdna_dev(ddev);
+
+	XDNA_DBG(xdna, "closing pid %d", client->pid);
+
+	xa_destroy(&client->hwctx_xa);
+	cleanup_srcu_struct(&client->hwctx_srcu);
+	mutex_destroy(&client->hwctx_lock);
+	mutex_destroy(&client->mm_lock);
+	if (client->dev_heap)
+		drm_gem_object_put(to_gobj(client->dev_heap));
+
+	iommu_sva_unbind_device(client->sva);
+
+	XDNA_DBG(xdna, "pid %d closed", client->pid);
+	kfree(client);
+	pm_runtime_mark_last_busy(ddev->dev);
+	pm_runtime_put_autosuspend(ddev->dev);
+}
+
+static int amdxdna_flush(struct file *f, fl_owner_t id)
+{
+	struct drm_file *filp = f->private_data;
+	struct amdxdna_client *client = filp->driver_priv;
+	struct amdxdna_dev *xdna = client->xdna;
+	int idx;
+
+	XDNA_DBG(xdna, "PID %d flushing...", client->pid);
+	if (!drm_dev_enter(&xdna->ddev, &idx))
+		return 0;
+
+	mutex_lock(&xdna->dev_lock);
+	list_del_init(&client->node);
+	mutex_unlock(&xdna->dev_lock);
+	amdxdna_hwctx_remove_all(client);
+
+	drm_dev_exit(idx);
+	return 0;
+}
+
+static int amdxdna_drm_get_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
+{
+	struct amdxdna_client *client = filp->driver_priv;
+	struct amdxdna_dev *xdna = to_xdna_dev(dev);
+	struct amdxdna_drm_get_info *args = data;
+	int ret;
+
+	if (!xdna->dev_info->ops->get_aie_info)
+		return -EOPNOTSUPP;
+
+	XDNA_DBG(xdna, "Request parameter %u", args->param);
+	mutex_lock(&xdna->dev_lock);
+	ret = xdna->dev_info->ops->get_aie_info(client, args);
+	mutex_unlock(&xdna->dev_lock);
+	return ret;
+}
+
+static int amdxdna_drm_set_state_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
+{
+	struct amdxdna_client *client = filp->driver_priv;
+	struct amdxdna_dev *xdna = to_xdna_dev(dev);
+	struct amdxdna_drm_set_state *args = data;
+	int ret;
+
+	if (!xdna->dev_info->ops->set_aie_state)
+		return -EOPNOTSUPP;
+
+	XDNA_DBG(xdna, "Request parameter %u", args->param);
+	mutex_lock(&xdna->dev_lock);
+	ret = xdna->dev_info->ops->set_aie_state(client, args);
+	mutex_unlock(&xdna->dev_lock);
+
+	return ret;
+}
+
+static const struct drm_ioctl_desc amdxdna_drm_ioctls[] = {
+	/* Context */
+	DRM_IOCTL_DEF_DRV(AMDXDNA_CREATE_HWCTX, amdxdna_drm_create_hwctx_ioctl, 0),
+	DRM_IOCTL_DEF_DRV(AMDXDNA_DESTROY_HWCTX, amdxdna_drm_destroy_hwctx_ioctl, 0),
+	DRM_IOCTL_DEF_DRV(AMDXDNA_CONFIG_HWCTX, amdxdna_drm_config_hwctx_ioctl, 0),
+	/* BO */
+	DRM_IOCTL_DEF_DRV(AMDXDNA_CREATE_BO, amdxdna_drm_create_bo_ioctl, 0),
+	DRM_IOCTL_DEF_DRV(AMDXDNA_GET_BO_INFO, amdxdna_drm_get_bo_info_ioctl, 0),
+	DRM_IOCTL_DEF_DRV(AMDXDNA_SYNC_BO, amdxdna_drm_sync_bo_ioctl, 0),
+	/* Execution */
+	DRM_IOCTL_DEF_DRV(AMDXDNA_EXEC_CMD, amdxdna_drm_submit_cmd_ioctl, 0),
+	/* AIE hardware */
+	DRM_IOCTL_DEF_DRV(AMDXDNA_GET_INFO, amdxdna_drm_get_info_ioctl, 0),
+	DRM_IOCTL_DEF_DRV(AMDXDNA_SET_STATE, amdxdna_drm_set_state_ioctl, DRM_ROOT_ONLY),
+};
+
+static const struct file_operations amdxdna_fops = {
+	.owner		= THIS_MODULE,
+	.open		= accel_open,
+	.release	= drm_release,
+	.flush		= amdxdna_flush,
+	.unlocked_ioctl	= drm_ioctl,
+	.compat_ioctl	= drm_compat_ioctl,
+	.poll		= drm_poll,
+	.read		= drm_read,
+	.llseek		= noop_llseek,
+	.mmap		= drm_gem_mmap,
+	.fop_flags	= FOP_UNSIGNED_OFFSET,
+};
+
+const struct drm_driver amdxdna_drm_drv = {
+	.driver_features = DRIVER_GEM | DRIVER_COMPUTE_ACCEL |
+		DRIVER_SYNCOBJ | DRIVER_SYNCOBJ_TIMELINE,
+	.fops = &amdxdna_fops,
+	.name = "amdxdna_accel_driver",
+	.desc = "AMD XDNA DRM implementation",
+	.open = amdxdna_drm_open,
+	.postclose = amdxdna_drm_close,
+	.ioctls = amdxdna_drm_ioctls,
+	.num_ioctls = ARRAY_SIZE(amdxdna_drm_ioctls),
+
+	.gem_create_object = amdxdna_gem_create_object_cb,
+};
+
+static const struct amdxdna_dev_info *
+amdxdna_get_dev_info(struct pci_dev *pdev)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(amdxdna_ids); i++) {
+		if (pdev->device == amdxdna_ids[i].device &&
+		    pdev->revision == amdxdna_ids[i].revision)
+			return amdxdna_ids[i].dev_info;
+	}
+	return NULL;
+}
+
+static int amdxdna_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct device *dev = &pdev->dev;
+	struct amdxdna_dev *xdna;
+	int ret;
+
+	xdna = devm_drm_dev_alloc(dev, &amdxdna_drm_drv, typeof(*xdna), ddev);
+	if (IS_ERR(xdna))
+		return PTR_ERR(xdna);
+
+	xdna->dev_info = amdxdna_get_dev_info(pdev);
+	if (!xdna->dev_info)
+		return -ENODEV;
+
+	drmm_mutex_init(&xdna->ddev, &xdna->dev_lock);
+	init_rwsem(&xdna->notifier_lock);
+	INIT_LIST_HEAD(&xdna->client_list);
+	pci_set_drvdata(pdev, xdna);
+
+	if (IS_ENABLED(CONFIG_LOCKDEP)) {
+		fs_reclaim_acquire(GFP_KERNEL);
+		might_lock(&xdna->notifier_lock);
+		fs_reclaim_release(GFP_KERNEL);
+	}
+
+	mutex_lock(&xdna->dev_lock);
+	ret = xdna->dev_info->ops->init(xdna);
+	mutex_unlock(&xdna->dev_lock);
+	if (ret) {
+		XDNA_ERR(xdna, "Hardware init failed, ret %d", ret);
+		return ret;
+	}
+
+	ret = amdxdna_sysfs_init(xdna);
+	if (ret) {
+		XDNA_ERR(xdna, "Create amdxdna attrs failed: %d", ret);
+		goto failed_dev_fini;
+	}
+
+	pm_runtime_set_autosuspend_delay(dev, AMDXDNA_AUTOSUSPEND_DELAY);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_allow(dev);
+
+	ret = drm_dev_register(&xdna->ddev, 0);
+	if (ret) {
+		XDNA_ERR(xdna, "DRM register failed, ret %d", ret);
+		pm_runtime_forbid(dev);
+		goto failed_sysfs_fini;
+	}
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+	return 0;
+
+failed_sysfs_fini:
+	amdxdna_sysfs_fini(xdna);
+failed_dev_fini:
+	mutex_lock(&xdna->dev_lock);
+	xdna->dev_info->ops->fini(xdna);
+	mutex_unlock(&xdna->dev_lock);
+	return ret;
+}
+
+static void amdxdna_remove(struct pci_dev *pdev)
+{
+	struct amdxdna_dev *xdna = pci_get_drvdata(pdev);
+	struct device *dev = &pdev->dev;
+	struct amdxdna_client *client;
+
+	pm_runtime_get_noresume(dev);
+	pm_runtime_forbid(dev);
+
+	drm_dev_unplug(&xdna->ddev);
+	amdxdna_sysfs_fini(xdna);
+
+	mutex_lock(&xdna->dev_lock);
+	client = list_first_entry_or_null(&xdna->client_list,
+					  struct amdxdna_client, node);
+	while (client) {
+		list_del_init(&client->node);
+		mutex_unlock(&xdna->dev_lock);
+
+		amdxdna_hwctx_remove_all(client);
+
+		mutex_lock(&xdna->dev_lock);
+		client = list_first_entry_or_null(&xdna->client_list,
+						  struct amdxdna_client, node);
+	}
+
+	xdna->dev_info->ops->fini(xdna);
+	mutex_unlock(&xdna->dev_lock);
+}
+
+static int amdxdna_dev_suspend_nolock(struct amdxdna_dev *xdna)
+{
+	if (xdna->dev_info->ops->suspend)
+		xdna->dev_info->ops->suspend(xdna);
+
+	return 0;
+}
+
+static int amdxdna_dev_resume_nolock(struct amdxdna_dev *xdna)
+{
+	if (xdna->dev_info->ops->resume)
+		return xdna->dev_info->ops->resume(xdna);
+
+	return 0;
+}
+
+static int amdxdna_pmops_suspend(struct device *dev)
+{
+	struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev));
+	struct amdxdna_client *client;
+
+	mutex_lock(&xdna->dev_lock);
+	list_for_each_entry(client, &xdna->client_list, node)
+		amdxdna_hwctx_suspend(client);
+
+	amdxdna_dev_suspend_nolock(xdna);
+	mutex_unlock(&xdna->dev_lock);
+
+	return 0;
+}
+
+static int amdxdna_pmops_resume(struct device *dev)
+{
+	struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev));
+	struct amdxdna_client *client;
+	int ret;
+
+	XDNA_INFO(xdna, "firmware resuming...");
+	mutex_lock(&xdna->dev_lock);
+	ret = amdxdna_dev_resume_nolock(xdna);
+	if (ret) {
+		XDNA_ERR(xdna, "resume NPU firmware failed");
+		mutex_unlock(&xdna->dev_lock);
+		return ret;
+	}
+
+	XDNA_INFO(xdna, "hardware context resuming...");
+	list_for_each_entry(client, &xdna->client_list, node)
+		amdxdna_hwctx_resume(client);
+	mutex_unlock(&xdna->dev_lock);
+
+	return 0;
+}
+
+static int amdxdna_rpmops_suspend(struct device *dev)
+{
+	struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev));
+	int ret;
+
+	mutex_lock(&xdna->dev_lock);
+	ret = amdxdna_dev_suspend_nolock(xdna);
+	mutex_unlock(&xdna->dev_lock);
+
+	XDNA_DBG(xdna, "Runtime suspend done ret: %d", ret);
+	return ret;
+}
+
+static int amdxdna_rpmops_resume(struct device *dev)
+{
+	struct amdxdna_dev *xdna = pci_get_drvdata(to_pci_dev(dev));
+	int ret;
+
+	mutex_lock(&xdna->dev_lock);
+	ret = amdxdna_dev_resume_nolock(xdna);
+	mutex_unlock(&xdna->dev_lock);
+
+	XDNA_DBG(xdna, "Runtime resume done ret: %d", ret);
+	return ret;
+}
+
+static const struct dev_pm_ops amdxdna_pm_ops = {
+	SYSTEM_SLEEP_PM_OPS(amdxdna_pmops_suspend, amdxdna_pmops_resume)
+	RUNTIME_PM_OPS(amdxdna_rpmops_suspend, amdxdna_rpmops_resume, NULL)
+};
+
+static struct pci_driver amdxdna_pci_driver = {
+	.name = KBUILD_MODNAME,
+	.id_table = pci_ids,
+	.probe = amdxdna_probe,
+	.remove = amdxdna_remove,
+	.driver.pm = &amdxdna_pm_ops,
+};
+
+module_pci_driver(amdxdna_pci_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("XRT Team <runtimeca39d@amd.com>");
+MODULE_DESCRIPTION("amdxdna driver");