[PATCH V5 XRT Alveo 10/20] fpga: xrt: main driver for management function device

Lizhi Hou
2021-04-27T21:00:59Z

xrt driver that handles IOCTLs, such as hot reset and xclbin download.

Signed-off-by: Sonal Santan <sonal.santan@xilinx.com>
Signed-off-by: Max Zhen <max.zhen@xilinx.com>
Signed-off-by: Lizhi Hou <lizhi.hou@xilinx.com>
---
drivers/fpga/xrt/include/xmgnt-main.h | 34 ++
drivers/fpga/xrt/mgnt/xmgnt-main.c | 660 ++++++++++++++++++++++++++
drivers/fpga/xrt/mgnt/xmgnt.h | 33 ++
include/uapi/linux/xrt/xmgnt-ioctl.h | 46 ++
4 files changed, 773 insertions(+)
create mode 100644 drivers/fpga/xrt/include/xmgnt-main.h
create mode 100644 drivers/fpga/xrt/mgnt/xmgnt-main.c
create mode 100644 drivers/fpga/xrt/mgnt/xmgnt.h
create mode 100644 include/uapi/linux/xrt/xmgnt-ioctl.h

diff --git a/drivers/fpga/xrt/include/xmgnt-main.h b/drivers/fpga/xrt/include/xmgnt-main.h
new file mode 100644
index 000000000000..b46dac710cd3
--- /dev/null
+++ b/drivers/fpga/xrt/include/xmgnt-main.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020-2021 Xilinx, Inc.
+ *
+ * Authors:
+ * Cheng Zhen <maxz@xilinx.com>
+ */
+
+#ifndef _XMGNT_MAIN_H_
+#define _XMGNT_MAIN_H_
+
+#include <linux/xrt/xclbin.h>
+#include "xleaf.h"
+
+enum xrt_mgnt_main_leaf_cmd {
+ XRT_MGNT_MAIN_GET_AXLF_SECTION = XRT_XLEAF_CUSTOM_BASE, /* See comments in xleaf.h */
+ XRT_MGNT_MAIN_GET_VBNV,
+};
+
+/* There are three kind of partitions. Each of them is programmed independently. */
+enum provider_kind {
+ XMGNT_BLP, /* Base Logic Partition */
+ XMGNT_PLP, /* Provider Logic Partition */
+ XMGNT_ULP, /* User Logic Partition */
+};
+
+struct xrt_mgnt_main_get_axlf_section {
+ enum provider_kind xmmigas_axlf_kind;
+ enum axlf_section_kind xmmigas_section_kind;
+ void *xmmigas_section;
+ u64 xmmigas_section_size;
+};
+
+#endif /* _XMGNT_MAIN_H_ */
diff --git a/drivers/fpga/xrt/mgnt/xmgnt-main.c b/drivers/fpga/xrt/mgnt/xmgnt-main.c
new file mode 100644
index 000000000000..a1c6dc34f6c0
--- /dev/null
+++ b/drivers/fpga/xrt/mgnt/xmgnt-main.c
@@ -0,0 +1,660 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Xilinx Alveo FPGA MGNT PF entry point driver
+ *
+ * Copyright (C) 2020-2021 Xilinx, Inc.
+ *
+ * Authors:
+ * Sonal Santan <sonals@xilinx.com>
+ */
+
+#include <linux/firmware.h>
+#include <linux/uaccess.h>
+#include <linux/slab.h>
+#include "xclbin-helper.h"
+#include "metadata.h"
+#include "xleaf.h"
+#include <linux/xrt/xmgnt-ioctl.h>
+#include "xleaf/devctl.h"
+#include "xmgnt-main.h"
+#include "xrt-mgr.h"
+#include "xleaf/icap.h"
+#include "xleaf/axigate.h"
+#include "xmgnt.h"
+
+#define XMGNT_MAIN "xmgnt_main"
+#define XMGNT_SUPP_XCLBIN_MAJOR 2
+
+#define XMGNT_FLAG_FLASH_READY 1
+#define XMGNT_FLAG_DEVCTL_READY 2
+
+#define XMGNT_UUID_STR_LEN (UUID_SIZE * 2 + 1)
+
+struct xmgnt_main {
+ struct xrt_device *xdev;
+ struct axlf *firmware_blp;
+ struct axlf *firmware_plp;
+ struct axlf *firmware_ulp;
+ u32 flags;
+ struct fpga_manager *fmgr;
+ struct mutex lock; /* busy lock */
+ uuid_t *blp_interface_uuids;
+ u32 blp_interface_uuid_num;
+};
+
+/*
+ * VBNV stands for Vendor, BoardID, Name, Version. It is a string
+ * which describes board and shell.
+ *
+ * Caller is responsible for freeing the returned string.
+ */
+char *xmgnt_get_vbnv(struct xrt_device *xdev)
+{
+ struct xmgnt_main *xmm = xrt_get_drvdata(xdev);
+ const char *vbnv;
+ char *ret;
+ int i;
+
+ if (xmm->firmware_plp)
+ vbnv = xmm->firmware_plp->header.platform_vbnv;
+ else if (xmm->firmware_blp)
+ vbnv = xmm->firmware_blp->header.platform_vbnv;
+ else
+ return NULL;
+
+ ret = kstrdup(vbnv, GFP_KERNEL);
+ if (!ret)
+ return NULL;
+
+ for (i = 0; i < strlen(ret); i++) {
+ if (ret[i] == ':' || ret[i] == '.')
+ ret[i] = '_';
+ }
+ return ret;
+}
+
+static int get_dev_uuid(struct xrt_device *xdev, char *uuidstr, size_t len)
+{
+ struct xrt_devctl_rw devctl_arg = { 0 };
+ struct xrt_device *devctl_leaf;
+ char uuid_buf[UUID_SIZE];
+ uuid_t uuid;
+ int err;
+
+ devctl_leaf = xleaf_get_leaf_by_epname(xdev, XRT_MD_NODE_BLP_ROM);
+ if (!devctl_leaf) {
+ xrt_err(xdev, "can not get %s", XRT_MD_NODE_BLP_ROM);
+ return -EINVAL;
+ }
+
+ devctl_arg.xdr_id = XRT_DEVCTL_ROM_UUID;
+ devctl_arg.xdr_buf = uuid_buf;
+ devctl_arg.xdr_len = sizeof(uuid_buf);
+ devctl_arg.xdr_offset = 0;
+ err = xleaf_call(devctl_leaf, XRT_DEVCTL_READ, &devctl_arg);
+ xleaf_put_leaf(xdev, devctl_leaf);
+ if (err) {
+ xrt_err(xdev, "can not get uuid: %d", err);
+ return err;
+ }
+ import_uuid(&uuid, uuid_buf);
+ xrt_md_trans_uuid2str(&uuid, uuidstr);
+
+ return 0;
+}
+
+int xmgnt_hot_reset(struct xrt_device *xdev)
+{
+ int ret = xleaf_broadcast_event(xdev, XRT_EVENT_PRE_HOT_RESET, false);
+
+ if (ret) {
+ xrt_err(xdev, "offline failed, hot reset is canceled");
+ return ret;
+ }
+
+ xleaf_hot_reset(xdev);
+ xleaf_broadcast_event(xdev, XRT_EVENT_POST_HOT_RESET, false);
+ return 0;
+}
+
+static ssize_t reset_store(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct xrt_device *xdev = to_xrt_dev(dev);
+
+ xmgnt_hot_reset(xdev);
+ return count;
+}
+static DEVICE_ATTR_WO(reset);
+
+static ssize_t VBNV_show(struct device *dev, struct device_attribute *da, char *buf)
+{
+ struct xrt_device *xdev = to_xrt_dev(dev);
+ ssize_t ret;
+ char *vbnv;
+
+ vbnv = xmgnt_get_vbnv(xdev);
+ if (!vbnv)
+ return -EINVAL;
+ ret = sprintf(buf, "%s\n", vbnv);
+ kfree(vbnv);
+ return ret;
+}
+static DEVICE_ATTR_RO(VBNV);
+
+/* logic uuid is the uuid uniquely identfy the partition */
+static ssize_t logic_uuids_show(struct device *dev, struct device_attribute *da, char *buf)
+{
+ struct xrt_device *xdev = to_xrt_dev(dev);
+ char uuid[XMGNT_UUID_STR_LEN];
+ ssize_t ret;
+
+ /* Getting UUID pointed to by VSEC, should be the same as logic UUID of BLP. */
+ ret = get_dev_uuid(xdev, uuid, sizeof(uuid));
+ if (ret)
+ return ret;
+ ret = sprintf(buf, "%s\n", uuid);
+ return ret;
+}
+static DEVICE_ATTR_RO(logic_uuids);
+
+static ssize_t interface_uuids_show(struct device *dev, struct device_attribute *da, char *buf)
+{
+ struct xrt_device *xdev = to_xrt_dev(dev);
+ struct xmgnt_main *xmm = xrt_get_drvdata(xdev);
+ ssize_t ret = 0;
+ u32 i;
+
+ for (i = 0; i < xmm->blp_interface_uuid_num; i++) {
+ char uuidstr[XMGNT_UUID_STR_LEN];
+
+ xrt_md_trans_uuid2str(&xmm->blp_interface_uuids[i], uuidstr);
+ ret += sprintf(buf + ret, "%s\n", uuidstr);
+ }
+ return ret;
+}
+static DEVICE_ATTR_RO(interface_uuids);
+
+static struct attribute *xmgnt_main_attrs[] = {
+ &dev_attr_reset.attr,
+ &dev_attr_VBNV.attr,
+ &dev_attr_logic_uuids.attr,
+ &dev_attr_interface_uuids.attr,
+ NULL,
+};
+
+static const struct attribute_group xmgnt_main_attrgroup = {
+ .attrs = xmgnt_main_attrs,
+};
+
+static int load_firmware_from_disk(struct xrt_device *xdev, struct axlf **fw_buf, size_t *len)
+{
+ char uuid[XMGNT_UUID_STR_LEN];
+ const struct firmware *fw;
+ char fw_name[256];
+ int err = 0;
+
+ *len = 0;
+ err = get_dev_uuid(xdev, uuid, sizeof(uuid));
+ if (err)
+ return err;
+
+ snprintf(fw_name, sizeof(fw_name), "xilinx/%s/partition.xsabin", uuid);
+ xrt_info(xdev, "try loading fw: %s", fw_name);
+
+ err = request_firmware(&fw, fw_name, DEV(xdev));
+ if (err)
+ return err;
+
+ *fw_buf = vmalloc(fw->size);
+ if (!*fw_buf) {
+ release_firmware(fw);
+ return -ENOMEM;
+ }
+
+ *len = fw->size;
+ memcpy(*fw_buf, fw->data, fw->size);
+
+ release_firmware(fw);
+ return 0;
+}
+
+static const struct axlf *xmgnt_get_axlf_firmware(struct xmgnt_main *xmm, enum provider_kind kind)
+{
+ switch (kind) {
+ case XMGNT_BLP:
+ return xmm->firmware_blp;
+ case XMGNT_PLP:
+ return xmm->firmware_plp;
+ case XMGNT_ULP:
+ return xmm->firmware_ulp;
+ default:
+ xrt_err(xmm->xdev, "unknown axlf kind: %d", kind);
+ return NULL;
+ }
+}
+
+/* The caller needs to free the returned dtb buffer */
+char *xmgnt_get_dtb(struct xrt_device *xdev, enum provider_kind kind)
+{
+ struct xmgnt_main *xmm = xrt_get_drvdata(xdev);
+ const struct axlf *provider;
+ char *dtb = NULL;
+ int rc;
+
+ provider = xmgnt_get_axlf_firmware(xmm, kind);
+ if (!provider)
+ return dtb;
+
+ rc = xrt_xclbin_get_metadata(DEV(xdev), provider, &dtb);
+ if (rc)
+ xrt_err(xdev, "failed to find dtb: %d", rc);
+ return dtb;
+}
+
+/* The caller needs to free the returned uuid buffer */
+static const char *get_uuid_from_firmware(struct xrt_device *xdev, const struct axlf *xclbin)
+{
+ const void *uuiddup = NULL;
+ const void *uuid = NULL;
+ void *dtb = NULL;
+ int rc;
+
+ rc = xrt_xclbin_get_section(DEV(xdev), xclbin, PARTITION_METADATA, &dtb, NULL);
+ if (rc)
+ return NULL;
+
+ rc = xrt_md_get_prop(DEV(xdev), dtb, NULL, NULL, XRT_MD_PROP_LOGIC_UUID, &uuid, NULL);
+ if (!rc)
+ uuiddup = kstrdup(uuid, GFP_KERNEL);
+ vfree(dtb);
+ return uuiddup;
+}
+
+static bool is_valid_firmware(struct xrt_device *xdev,
+ const struct axlf *xclbin, size_t fw_len)
+{
+ const char *fw_buf = (const char *)xclbin;
+ size_t axlflen = xclbin->header.length;
+ char dev_uuid[XMGNT_UUID_STR_LEN];
+ const char *fw_uuid;
+ int err;
+
+ err = get_dev_uuid(xdev, dev_uuid, sizeof(dev_uuid));
+ if (err)
+ return false;
+
+ if (memcmp(fw_buf, XCLBIN_VERSION2, sizeof(XCLBIN_VERSION2)) != 0) {
+ xrt_err(xdev, "unknown fw format");
+ return false;
+ }
+
+ if (axlflen > fw_len) {
+ xrt_err(xdev, "truncated fw, length: %zu, expect: %zu", fw_len, axlflen);
+ return false;
+ }
+
+ if (xclbin->header.version_major != XMGNT_SUPP_XCLBIN_MAJOR) {
+ xrt_err(xdev, "firmware is not supported");
+ return false;
+ }
+
+ fw_uuid = get_uuid_from_firmware(xdev, xclbin);
+ if (!fw_uuid || strncmp(fw_uuid, dev_uuid, sizeof(dev_uuid)) != 0) {
+ xrt_err(xdev, "bad fw UUID: %s, expect: %s",
+ fw_uuid ? fw_uuid : "<none>", dev_uuid);
+ kfree(fw_uuid);
+ return false;
+ }
+
+ kfree(fw_uuid);
+ return true;
+}
+
+int xmgnt_get_provider_uuid(struct xrt_device *xdev, enum provider_kind kind, uuid_t *uuid)
+{
+ struct xmgnt_main *xmm = xrt_get_drvdata(xdev);
+ const struct axlf *fwbuf;
+ const char *fw_uuid;
+ int rc = -ENOENT;
+
+ mutex_lock(&xmm->lock);
+
+ fwbuf = xmgnt_get_axlf_firmware(xmm, kind);
+ if (!fwbuf)
+ goto done;
+
+ fw_uuid = get_uuid_from_firmware(xdev, fwbuf);
+ if (!fw_uuid)
+ goto done;
+
+ rc = xrt_md_trans_str2uuid(DEV(xdev), fw_uuid, uuid);
+ kfree(fw_uuid);
+
+done:
+ mutex_unlock(&xmm->lock);
+ return rc;
+}
+
+static int xmgnt_create_blp(struct xmgnt_main *xmm)
+{
+ const struct axlf *provider = xmgnt_get_axlf_firmware(xmm, XMGNT_BLP);
+ struct xrt_device *xdev = xmm->xdev;
+ int rc = 0;
+ char *dtb = NULL;
+
+ dtb = xmgnt_get_dtb(xdev, XMGNT_BLP);
+ if (!dtb) {
+ xrt_err(xdev, "did not get BLP metadata");
+ return -EINVAL;
+ }
+
+ rc = xmgnt_process_xclbin(xmm->xdev, xmm->fmgr, provider, XMGNT_BLP);
+ if (rc) {
+ xrt_err(xdev, "failed to process BLP: %d", rc);
+ goto failed;
+ }
+
+ rc = xleaf_create_group(xdev, dtb);
+ if (rc < 0)
+ xrt_err(xdev, "failed to create BLP group: %d", rc);
+ else
+ rc = 0;
+
+ WARN_ON(xmm->blp_interface_uuids);
+ rc = xrt_md_get_interface_uuids(&xdev->dev, dtb, 0, NULL);
+ if (rc > 0) {
+ xmm->blp_interface_uuid_num = rc;
+ xmm->blp_interface_uuids =
+ kcalloc(xmm->blp_interface_uuid_num, sizeof(uuid_t), GFP_KERNEL);
+ if (!xmm->blp_interface_uuids) {
+ rc = -ENOMEM;
+ goto failed;
+ }
+ xrt_md_get_interface_uuids(&xdev->dev, dtb, xmm->blp_interface_uuid_num,
+ xmm->blp_interface_uuids);
+ }
+
+failed:
+ vfree(dtb);
+ return rc;
+}
+
+static int xmgnt_load_firmware(struct xmgnt_main *xmm)
+{
+ struct xrt_device *xdev = xmm->xdev;
+ size_t fwlen;
+ int rc;
+
+ rc = load_firmware_from_disk(xdev, &xmm->firmware_blp, &fwlen);
+ if (!rc && is_valid_firmware(xdev, xmm->firmware_blp, fwlen))
+ xmgnt_create_blp(xmm);
+ else
+ xrt_err(xdev, "failed to find firmware, giving up: %d", rc);
+ return rc;
+}
+
+static void xmgnt_main_event_cb(struct xrt_device *xdev, void *arg)
+{
+ struct xmgnt_main *xmm = xrt_get_drvdata(xdev);
+ struct xrt_event *evt = (struct xrt_event *)arg;
+ enum xrt_events e = evt->xe_evt;
+ struct xrt_device *leaf;
+ enum xrt_subdev_id id;
+
+ id = evt->xe_subdev.xevt_subdev_id;
+ switch (e) {
+ case XRT_EVENT_POST_CREATION: {
+ if (id == XRT_SUBDEV_DEVCTL && !(xmm->flags & XMGNT_FLAG_DEVCTL_READY)) {
+ leaf = xleaf_get_leaf_by_epname(xdev, XRT_MD_NODE_BLP_ROM);
+ if (leaf) {
+ xmm->flags |= XMGNT_FLAG_DEVCTL_READY;
+ xleaf_put_leaf(xdev, leaf);
+ }
+ } else if (id == XRT_SUBDEV_QSPI && !(xmm->flags & XMGNT_FLAG_FLASH_READY)) {
+ xmm->flags |= XMGNT_FLAG_FLASH_READY;
+ } else {
+ break;
+ }
+
+ if (xmm->flags & XMGNT_FLAG_DEVCTL_READY)
+ xmgnt_load_firmware(xmm);
+ break;
+ }
+ case XRT_EVENT_PRE_REMOVAL:
+ break;
+ default:
+ xrt_dbg(xdev, "ignored event %d", e);
+ break;
+ }
+}
+
+static int xmgnt_main_probe(struct xrt_device *xdev)
+{
+ struct xmgnt_main *xmm;
+
+ xrt_info(xdev, "probing...");
+
+ xmm = devm_kzalloc(DEV(xdev), sizeof(*xmm), GFP_KERNEL);
+ if (!xmm)
+ return -ENOMEM;
+
+ xmm->xdev = xdev;
+ xmm->fmgr = xmgnt_fmgr_probe(xdev);
+ if (IS_ERR(xmm->fmgr))
+ return PTR_ERR(xmm->fmgr);
+
+ xrt_set_drvdata(xdev, xmm);
+ mutex_init(&xmm->lock);
+
+ /* Ready to handle req thru sysfs nodes. */
+ if (sysfs_create_group(&DEV(xdev)->kobj, &xmgnt_main_attrgroup))
+ xrt_err(xdev, "failed to create sysfs group");
+ return 0;
+}
+
+static void xmgnt_main_remove(struct xrt_device *xdev)
+{
+ struct xmgnt_main *xmm = xrt_get_drvdata(xdev);
+
+ /* By now, group driver should prevent any inter-leaf call. */
+
+ xrt_info(xdev, "leaving...");
+
+ kfree(xmm->blp_interface_uuids);
+ vfree(xmm->firmware_blp);
+ vfree(xmm->firmware_plp);
+ vfree(xmm->firmware_ulp);
+ xmgnt_region_cleanup_all(xdev);
+ xmgnt_fmgr_remove(xmm->fmgr);
+ sysfs_remove_group(&DEV(xdev)->kobj, &xmgnt_main_attrgroup);
+}
+
+static int
+xmgnt_mainleaf_call(struct xrt_device *xdev, u32 cmd, void *arg)
+{
+ struct xmgnt_main *xmm = xrt_get_drvdata(xdev);
+ int ret = 0;
+
+ switch (cmd) {
+ case XRT_XLEAF_EVENT:
+ xmgnt_main_event_cb(xdev, arg);
+ break;
+ case XRT_MGNT_MAIN_GET_AXLF_SECTION: {
+ struct xrt_mgnt_main_get_axlf_section *get =
+ (struct xrt_mgnt_main_get_axlf_section *)arg;
+ const struct axlf *firmware = xmgnt_get_axlf_firmware(xmm, get->xmmigas_axlf_kind);
+
+ if (!firmware) {
+ ret = -ENOENT;
+ } else {
+ ret = xrt_xclbin_get_section(DEV(xdev), firmware,
+ get->xmmigas_section_kind,
+ &get->xmmigas_section,
+ &get->xmmigas_section_size);
+ }
+ break;
+ }
+ case XRT_MGNT_MAIN_GET_VBNV: {
+ char **vbnv_p = (char **)arg;
+
+ *vbnv_p = xmgnt_get_vbnv(xdev);
+ if (!*vbnv_p)
+ ret = -EINVAL;
+ break;
+ }
+ default:
+ xrt_err(xdev, "unknown cmd: %d", cmd);
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int xmgnt_main_open(struct inode *inode, struct file *file)
+{
+ struct xrt_device *xdev = xleaf_devnode_open(inode);
+
+ /* Device may have gone already when we get here. */
+ if (!xdev)
+ return -ENODEV;
+
+ xrt_info(xdev, "opened");
+ file->private_data = xrt_get_drvdata(xdev);
+ return 0;
+}
+
+static int xmgnt_main_close(struct inode *inode, struct file *file)
+{
+ struct xmgnt_main *xmm = file->private_data;
+
+ xleaf_devnode_close(inode);
+
+ xrt_info(xmm->xdev, "closed");
+ return 0;
+}
+
+/*
+ * Called for xclbin download xclbin load ioctl.
+ */
+static int xmgnt_bitstream_axlf_fpga_mgr(struct xmgnt_main *xmm, void *axlf, size_t size)
+{
+ int ret;
+
+ WARN_ON(!mutex_is_locked(&xmm->lock));
+
+ /*
+ * Should any error happens during download, we can't trust
+ * the cached xclbin any more.
+ */
+ vfree(xmm->firmware_ulp);
+ xmm->firmware_ulp = NULL;
+
+ ret = xmgnt_process_xclbin(xmm->xdev, xmm->fmgr, axlf, XMGNT_ULP);
+ if (ret == 0)
+ xmm->firmware_ulp = axlf;
+
+ return ret;
+}
+
+static int bitstream_axlf_ioctl(struct xmgnt_main *xmm, const void __user *arg)
+{
+ struct xmgnt_ioc_bitstream_axlf ioc_obj = { 0 };
+ struct axlf xclbin_obj = { {0} };
+ size_t copy_buffer_size = 0;
+ void *copy_buffer = NULL;
+ int ret = 0;
+
+ if (copy_from_user((void *)&ioc_obj, arg, sizeof(ioc_obj)))
+ return -EFAULT;
+ if (copy_from_user((void *)&xclbin_obj, ioc_obj.xclbin, sizeof(xclbin_obj)))
+ return -EFAULT;
+ if (memcmp(xclbin_obj.magic, XCLBIN_VERSION2, sizeof(XCLBIN_VERSION2)))
+ return -EINVAL;
+
+ copy_buffer_size = xclbin_obj.header.length;
+ if (copy_buffer_size > XCLBIN_MAX_SIZE || copy_buffer_size < sizeof(xclbin_obj))
+ return -EINVAL;
+ if (xclbin_obj.header.version_major != XMGNT_SUPP_XCLBIN_MAJOR)
+ return -EINVAL;
+
+ copy_buffer = vmalloc(copy_buffer_size);
+ if (!copy_buffer)
+ return -ENOMEM;
+
+ if (copy_from_user(copy_buffer, ioc_obj.xclbin, copy_buffer_size)) {
+ vfree(copy_buffer);
+ return -EFAULT;
+ }
+
+ ret = xmgnt_bitstream_axlf_fpga_mgr(xmm, copy_buffer, copy_buffer_size);
+ if (ret)
+ vfree(copy_buffer);
+
+ return ret;
+}
+
+static long xmgnt_main_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ struct xmgnt_main *xmm = filp->private_data;
+ long result = 0;
+
+ if (_IOC_TYPE(cmd) != XMGNT_IOC_MAGIC)
+ return -ENOTTY;
+
+ mutex_lock(&xmm->lock);
+
+ xrt_info(xmm->xdev, "ioctl cmd %d, arg %ld", cmd, arg);
+ switch (cmd) {
+ case XMGNT_IOCICAPDOWNLOAD_AXLF:
+ result = bitstream_axlf_ioctl(xmm, (const void __user *)arg);
+ break;
+ default:
+ result = -ENOTTY;
+ break;
+ }
+
+ mutex_unlock(&xmm->lock);
+ return result;
+}
+
+static struct xrt_dev_endpoints xrt_mgnt_main_endpoints[] = {
+ {
+ .xse_names = (struct xrt_dev_ep_names []){
+ { .ep_name = XRT_MD_NODE_MGNT_MAIN },
+ { NULL },
+ },
+ .xse_min_ep = 1,
+ },
+ { 0 },
+};
+
+static struct xrt_driver xmgnt_main_driver = {
+ .driver = {
+ .name = XMGNT_MAIN,
+ },
+ .file_ops = {
+ .xsf_ops = {
+ .owner = THIS_MODULE,
+ .open = xmgnt_main_open,
+ .release = xmgnt_main_close,
+ .unlocked_ioctl = xmgnt_main_ioctl,
+ },
+ .xsf_dev_name = "xmgnt",
+ },
+ .subdev_id = XRT_SUBDEV_MGNT_MAIN,
+ .endpoints = xrt_mgnt_main_endpoints,
+ .probe = xmgnt_main_probe,
+ .remove = xmgnt_main_remove,
+ .leaf_call = xmgnt_mainleaf_call,
+};
+
+int xmgnt_register_leaf(void)
+{
+ return xrt_register_driver(&xmgnt_main_driver);
+}
+
+void xmgnt_unregister_leaf(void)
+{
+ xrt_unregister_driver(&xmgnt_main_driver);
+}
diff --git a/drivers/fpga/xrt/mgnt/xmgnt.h b/drivers/fpga/xrt/mgnt/xmgnt.h
new file mode 100644
index 000000000000..c8159903de4a
--- /dev/null
+++ b/drivers/fpga/xrt/mgnt/xmgnt.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020-2021 Xilinx, Inc.
+ *
+ * Authors:
+ * Lizhi Hou <Lizhi.Hou@xilinx.com>
+ * Cheng Zhen <maxz@xilinx.com>
+ */
+
+#ifndef _XMGNT_H_
+#define _XMGNT_H_
+
+#include "xmgnt-main.h"
+
+struct fpga_manager;
+int xmgnt_process_xclbin(struct xrt_device *xdev,
+ struct fpga_manager *fmgr,
+ const struct axlf *xclbin,
+ enum provider_kind kind);
+void xmgnt_region_cleanup_all(struct xrt_device *xdev);
+
+int xmgnt_hot_reset(struct xrt_device *xdev);
+
+/* Getting dtb for specified group. Caller should vfree returned dtb. */
+char *xmgnt_get_dtb(struct xrt_device *xdev, enum provider_kind kind);
+char *xmgnt_get_vbnv(struct xrt_device *xdev);
+int xmgnt_get_provider_uuid(struct xrt_device *xdev,
+ enum provider_kind kind, uuid_t *uuid);
+
+int xmgnt_register_leaf(void);
+void xmgnt_unregister_leaf(void);
+
+#endif /* _XMGNT_H_ */
diff --git a/include/uapi/linux/xrt/xmgnt-ioctl.h b/include/uapi/linux/xrt/xmgnt-ioctl.h
new file mode 100644
index 000000000000..e4ba5335fa3f
--- /dev/null
+++ b/include/uapi/linux/xrt/xmgnt-ioctl.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright (C) 2015-2021, Xilinx Inc
+ *
+ */
+
+/**
+ * DOC: PCIe Kernel Driver for Management Physical Function
+ * Interfaces exposed by *xrt-mgnt* driver are defined in file, *xmgnt-ioctl.h*.
+ * Core functionality provided by *xrt-mgnt* driver is described in the following table:
+ *
+ * =========== ============================== ==================================
+ * Functionality ioctl request code data format
+ * =========== ============================== ==================================
+ * 1 FPGA image download XMGNT_IOCICAPDOWNLOAD_AXLF xmgnt_ioc_bitstream_axlf
+ * =========== ============================== ==================================
+ */
+
+#ifndef _XMGNT_IOCTL_H_
+#define _XMGNT_IOCTL_H_
+
+#include <linux/ioctl.h>
+
+#define XMGNT_IOC_MAGIC 'X'
+#define XMGNT_IOC_ICAP_DOWNLOAD_AXLF 0x6
+
+/**
+ * struct xmgnt_ioc_bitstream_axlf - load xclbin (AXLF) device image
+ * used with XMGNT_IOCICAPDOWNLOAD_AXLF ioctl
+ *
+ * @xclbin: Pointer to user's xclbin structure in memory
+ */
+struct xmgnt_ioc_bitstream_axlf {
+ struct axlf *xclbin;
+};
+
+#define XMGNT_IOCICAPDOWNLOAD_AXLF \
+ _IOW(XMGNT_IOC_MAGIC, XMGNT_IOC_ICAP_DOWNLOAD_AXLF, struct xmgnt_ioc_bitstream_axlf)
+
+/*
+ * The following definitions are for binary compatibility with classic XRT management driver
+ */
+#define XCLMGNT_IOCICAPDOWNLOAD_AXLF XMGNT_IOCICAPDOWNLOAD_AXLF
+#define xclmgnt_ioc_bitstream_axlf xmgnt_ioc_bitstream_axlf
+
+#endif
--
2.27.0