Merge tag 'thunderbolt-for-v5.11-rc1' of git://git.kernel.org/pub/scm…

…/linux/kernel/git/westeri/thunderbolt into usb-next

Mika writes:

thunderbolt: Changes for v5.11 merge window

This includes following Thunderbolt/USB4 changes for v5.11 merge window:

  * DMA traffic test driver

  * USB4 router NVM upgrade improvements

  * USB4 router operations proxy implementation available in the recent
    Intel Connection Manager firmwares

  * Support for Intel Maple Ridge discrete Thunderbolt 4 controller

  * A couple of cleanups and minor improvements.

* tag 'thunderbolt-for-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (22 commits)
  thunderbolt: Add support for Intel Maple Ridge
  thunderbolt: Add USB4 router operation proxy for firmware connection manager
  thunderbolt: Move constants for USB4 router operations to tb_regs.h
  thunderbolt: Add connection manager specific hooks for USB4 router operations
  thunderbolt: Pass TX and RX data directly to usb4_switch_op()
  thunderbolt: Pass metadata directly to usb4_switch_op()
  thunderbolt: Perform USB4 router NVM upgrade in two phases
  thunderbolt: Return -ENOTCONN when ERR_CONN is received
  thunderbolt: Keep the parent runtime resumed for a while on device disconnect
  thunderbolt: Log adapter numbers in decimal in path activation/deactivation
  thunderbolt: Log which connection manager implementation is used
  thunderbolt: Move max_boot_acl field to correct place in struct icm
  MAINTAINERS: Add Isaac as maintainer of Thunderbolt DMA traffic test driver
  thunderbolt: Add DMA traffic test driver
  thunderbolt: Add support for end-to-end flow control
  thunderbolt: Make it possible to allocate one directional DMA tunnel
  thunderbolt: Create debugfs directory automatically for services
  thunderbolt: Add functions for enabling and disabling lane bonding on XDomain
  thunderbolt: Add link_speed and link_width to XDomain
  thunderbolt: Create XDomain devices for loops back to the host
  ...

Documentation/ABI/testing/sysfs-bus-thunderbolt

@@ -1,3 +1,31 @@
+What: /sys/bus/thunderbolt/devices/<xdomain>/rx_speed
+Date: Feb 2021
+KernelVersion: 5.11
+Contact: Isaac Hazan <isaac.hazan@intel.com>
+Description: This attribute reports the XDomain RX speed per lane.
+ All RX lanes run at the same speed.
+
+What: /sys/bus/thunderbolt/devices/<xdomain>/rx_lanes
+Date: Feb 2021
+KernelVersion: 5.11
+Contact: Isaac Hazan <isaac.hazan@intel.com>
+Description: This attribute reports the number of RX lanes the XDomain
+ is using simultaneously through its upstream port.
+
+What: /sys/bus/thunderbolt/devices/<xdomain>/tx_speed
+Date: Feb 2021
+KernelVersion: 5.11
+Contact: Isaac Hazan <isaac.hazan@intel.com>
+Description: This attribute reports the XDomain TX speed per lane.
+ All TX lanes run at the same speed.
+
+What: /sys/bus/thunderbolt/devices/<xdomain>/tx_lanes
+Date: Feb 2021
+KernelVersion: 5.11
+Contact: Isaac Hazan <isaac.hazan@intel.com>
+Description: This attribute reports number of TX lanes the XDomain
+ is using simultaneously through its upstream port.
+
 What: /sys/bus/thunderbolt/devices/.../domainX/boot_acl
 Date: Jun 2018
 KernelVersion: 4.17

MAINTAINERS

@@ -17372,6 +17372,12 @@ W: http://thinkwiki.org/wiki/Ibm-acpi
 T: git git://repo.or.cz/linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git
 F: drivers/platform/x86/thinkpad_acpi.c
 
+THUNDERBOLT DMA TRAFFIC TEST DRIVER
+M: Isaac Hazan <isaac.hazan@intel.com>
+L: linux-usb@vger.kernel.org
+S: Maintained
+F: drivers/thunderbolt/dma_test.c
+
 THUNDERBOLT DRIVER
 M: Andreas Noever <andreas.noever@gmail.com>
 M: Michael Jamet <michael.jamet@intel.com>

drivers/net/thunderbolt.c

@@ -866,7 +866,7 @@ static int tbnet_open(struct net_device *dev)
  eof_mask = BIT(TBIP_PDF_FRAME_END);
 
  ring = tb_ring_alloc_rx(xd->tb->nhi, -1, TBNET_RING_SIZE,
- RING_FLAG_FRAME, sof_mask, eof_mask,
+ RING_FLAG_FRAME, 0, sof_mask, eof_mask,
  tbnet_start_poll, net);
  if (!ring) {
  netdev_err(dev, "failed to allocate Rx ring\n");

drivers/thunderbolt/Kconfig

@@ -31,4 +31,17 @@ config USB4_KUNIT_TEST
  bool "KUnit tests"
  depends on KUNIT=y
 
+config USB4_DMA_TEST
+ tristate "DMA traffic test driver"
+ depends on DEBUG_FS
+ help
+ This allows sending and receiving DMA traffic through loopback
+ connection. Loopback connection can be done by either special
+ dongle that has TX/RX lines crossed, or by simply connecting a
+ cable back to the host. Only enable this if you know what you
+ are doing. Normal users and distro kernels should say N here.
+
+ To compile this driver a module, choose M here. The module will be
+ called thunderbolt_dma_test.
+
 endif # USB4

drivers/thunderbolt/Makefile

@@ -7,3 +7,6 @@ thunderbolt-objs += nvm.o retimer.o quirks.o
 thunderbolt-${CONFIG_ACPI} += acpi.o
 thunderbolt-$(CONFIG_DEBUG_FS) += debugfs.o
 thunderbolt-${CONFIG_USB4_KUNIT_TEST} += test.o
+
+thunderbolt_dma_test-${CONFIG_USB4_DMA_TEST} += dma_test.o
+obj-$(CONFIG_USB4_DMA_TEST) += thunderbolt_dma_test.o

drivers/thunderbolt/ctl.c

@@ -628,8 +628,8 @@ struct tb_ctl *tb_ctl_alloc(struct tb_nhi *nhi, event_cb cb, void *cb_data)
  if (!ctl->tx)
  goto err;
 
- ctl->rx = tb_ring_alloc_rx(nhi, 0, 10, RING_FLAG_NO_SUSPEND, 0xffff,
- 0xffff, NULL, NULL);
+ ctl->rx = tb_ring_alloc_rx(nhi, 0, 10, RING_FLAG_NO_SUSPEND, 0, 0xffff,
+  0xffff, NULL, NULL);
  if (!ctl->rx)
  goto err;
 
@@ -962,6 +962,9 @@ static int tb_cfg_get_error(struct tb_ctl *ctl, enum tb_cfg_space space,
 
  if (res->tb_error == TB_CFG_ERROR_LOCK)
  return -EACCES;
+ else if (res->tb_error == TB_CFG_ERROR_PORT_NOT_CONNECTED)
+ return -ENOTCONN;
+
  return -EIO;
 }
 

drivers/thunderbolt/debugfs.c

@@ -691,6 +691,30 @@ void tb_switch_debugfs_remove(struct tb_switch *sw)
  debugfs_remove_recursive(sw->debugfs_dir);
 }
 
+/**
+ * tb_service_debugfs_init() - Add debugfs directory for service
+ * @svc: Thunderbolt service pointer
+ *
+ * Adds debugfs directory for service.
+ */
+void tb_service_debugfs_init(struct tb_service *svc)
+{
+ svc->debugfs_dir = debugfs_create_dir(dev_name(&svc->dev),
+ tb_debugfs_root);
+}
+
+/**
+ * tb_service_debugfs_remove() - Remove service debugfs directory
+ * @svc: Thunderbolt service pointer
+ *
+ * Removes the previously created debugfs directory for @svc.
+ */
+void tb_service_debugfs_remove(struct tb_service *svc)
+{
+ debugfs_remove_recursive(svc->debugfs_dir);
+ svc->debugfs_dir = NULL;
+}
+
 void tb_debugfs_init(void)
 {
  tb_debugfs_root = debugfs_create_dir("thunderbolt", NULL);