From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: linux-kernel@vger.kernel.org,
Michael Jamet <michael.jamet@intel.com>,
Yehezkel Bernat <YehezkelShB@gmail.com>,
Andreas Noever <andreas.noever@gmail.com>,
Lukas Wunner <lukas@wunner.de>,
"David S . Miller" <davem@davemloft.net>,
netdev@vger.kernel.org
Subject: Re: [PATCH v2 00/28] thunderbolt: Software connection manager improvements
Date: Thu, 7 Feb 2019 16:22:46 +0200 [thread overview]
Message-ID: <20190207142246.GG9224@smile.fi.intel.com> (raw)
In-Reply-To: <20190206131738.43696-1-mika.westerberg@linux.intel.com>
On Wed, Feb 06, 2019 at 04:17:10PM +0300, Mika Westerberg wrote:
> Hi,
>
> Software connection manager (drivers/thunderbolt/tb.c) is used on older
> Apple hardware with Light Ridge, Cactus Ridge or Falcon Ridge controllers
> to create PCIe tunnels when a Thunderbolt device is connected. Currently
> only one PCIe tunnel is supported. On newer Alpine Ridge based Apple
> systems the driver starts the firmware which then takes care creating
> tunnels.
>
> This series improves the software connection manager so that it will
> support:
>
> - Full PCIe daisy chains (up to 6 devices)
> - Display Port tunneling
> - P2P networking
>
> We also add support for Titan Ridge based Apple systems where we can use
> the same flows than with Alpine Ridge to start the firmware.
>
> Note in order to prevent possible DMA attacks on these systems we should
> make sure IOMMU is enabled. One option is to force dmar_platform_optin()
> return true on Apple hardware. However, it is not part of this series. I'm
> trusting people using Linux on such systems to take care of it. :-)
>
> Previous version of the patch series can be viewed here:
>
> https://lkml.org/lkml/2019/1/29/924
From code style and some other things we discussed off list the series looks
good to me.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Though minor comments per individual patches are provided.
>
> Changes from v1:
>
> * Added ACK from David
>
> * Add constant (TMU_ACCESS_EN) for BIT(20) when TMU access is enabled. We
> keep it in cap.c close to the LR/ER workaround. Also we enable/disable
> only during capability walk. If it turns we need to have it enabled
> elsewhere we can move it to switch.c and enable just once during
> switch enumeration.
>
> * Use 0 to mean no cap_adap instead of negative value. This follows
> cap_phy.
>
> * Use correct PCI IDs (_BRIDGE) in the last patch where we start firmware
> on Titan Ridge. It wrongly used NHI PCI IDs in v1.
>
> Mika Westerberg (28):
> net: thunderbolt: Unregister ThunderboltIP protocol handler when suspending
> thunderbolt: Do not allocate switch if depth is greater than 6
> thunderbolt: Enable TMU access when accessing port space on legacy devices
> thunderbolt: Add dummy read after port capability list walk on Light Ridge
> thunderbolt: Move LC specific functionality into a separate file
> thunderbolt: Configure lanes when switch is initialized
> thunderbolt: Set sleep bit when suspending switch
> thunderbolt: Properly disable path
> thunderbolt: Cache adapter specific capability offset into struct port
> thunderbolt: Rename tunnel_pci to tunnel
> thunderbolt: Generalize tunnel creation functionality
> thunderbolt: Add functions for allocating and releasing hop IDs
> thunderbolt: Add helper function to iterate from one port to another
> thunderbolt: Extend tunnel creation to more than 2 adjacent switches
> thunderbolt: Deactivate all paths before restarting them
> thunderbolt: Discover preboot PCIe paths the boot firmware established
> thunderbolt: Add support for full PCIe daisy chains
> thunderbolt: Scan only valid NULL adapter ports in hotplug
> thunderbolt: Generalize port finding routines to support all port types
> thunderbolt: Rework NFC credits handling
> thunderbolt: Add support for Display Port tunnels
> thunderbolt: Run tb_xdp_handle_request() in system workqueue
> thunderbolt: Add XDomain UUID exchange support
> thunderbolt: Add support for DMA tunnels
> thunderbolt: Make tb_switch_alloc() return ERR_PTR()
> thunderbolt: Add support for XDomain connections
> thunderbolt: Make rest of the logging to happen at debug level
> thunderbolt: Start firmware on Titan Ridge Apple systems
>
> drivers/net/thunderbolt.c | 3 +
> drivers/thunderbolt/Makefile | 4 +-
> drivers/thunderbolt/cap.c | 90 +++-
> drivers/thunderbolt/ctl.c | 2 +-
> drivers/thunderbolt/icm.c | 15 +-
> drivers/thunderbolt/lc.c | 179 ++++++++
> drivers/thunderbolt/path.c | 326 +++++++++++++--
> drivers/thunderbolt/switch.c | 466 ++++++++++++++++++---
> drivers/thunderbolt/tb.c | 529 ++++++++++++++++++------
> drivers/thunderbolt/tb.h | 67 ++-
> drivers/thunderbolt/tb_msgs.h | 11 +
> drivers/thunderbolt/tb_regs.h | 50 ++-
> drivers/thunderbolt/tunnel.c | 681 +++++++++++++++++++++++++++++++
> drivers/thunderbolt/tunnel.h | 75 ++++
> drivers/thunderbolt/tunnel_pci.c | 226 ----------
> drivers/thunderbolt/tunnel_pci.h | 31 --
> drivers/thunderbolt/xdomain.c | 142 ++++++-
> include/linux/thunderbolt.h | 8 +
> 18 files changed, 2389 insertions(+), 516 deletions(-)
> create mode 100644 drivers/thunderbolt/lc.c
> create mode 100644 drivers/thunderbolt/tunnel.c
> create mode 100644 drivers/thunderbolt/tunnel.h
> delete mode 100644 drivers/thunderbolt/tunnel_pci.c
> delete mode 100644 drivers/thunderbolt/tunnel_pci.h
>
> --
> 2.20.1
>
--
With Best Regards,
Andy Shevchenko
prev parent reply other threads:[~2019-02-07 14:22 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-06 13:17 [PATCH v2 00/28] thunderbolt: Software connection manager improvements Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 01/28] net: thunderbolt: Unregister ThunderboltIP protocol handler when suspending Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 02/28] thunderbolt: Do not allocate switch if depth is greater than 6 Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 03/28] thunderbolt: Enable TMU access when accessing port space on legacy devices Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 04/28] thunderbolt: Add dummy read after port capability list walk on Light Ridge Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 05/28] thunderbolt: Move LC specific functionality into a separate file Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 06/28] thunderbolt: Configure lanes when switch is initialized Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 07/28] thunderbolt: Set sleep bit when suspending switch Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 08/28] thunderbolt: Properly disable path Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 09/28] thunderbolt: Cache adapter specific capability offset into struct port Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 10/28] thunderbolt: Rename tunnel_pci to tunnel Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 11/28] thunderbolt: Generalize tunnel creation functionality Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 12/28] thunderbolt: Add functions for allocating and releasing hop IDs Mika Westerberg
2019-02-10 12:13 ` Lukas Wunner
2019-02-11 8:30 ` Mika Westerberg
2019-02-12 12:43 ` Lukas Wunner
2019-02-12 12:51 ` Mika Westerberg
2019-02-12 12:59 ` Lukas Wunner
2019-02-12 13:02 ` Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 13/28] thunderbolt: Add helper function to iterate from one port to another Mika Westerberg
2019-02-07 14:33 ` Andy Shevchenko
2019-02-11 6:16 ` Lukas Wunner
2019-02-11 9:54 ` Mika Westerberg
2019-02-12 13:55 ` Lukas Wunner
2019-02-12 19:03 ` Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 14/28] thunderbolt: Extend tunnel creation to more than 2 adjacent switches Mika Westerberg
2019-02-10 15:33 ` Lukas Wunner
2019-02-11 8:45 ` Mika Westerberg
2019-02-12 12:54 ` Lukas Wunner
2019-02-06 13:17 ` [PATCH v2 15/28] thunderbolt: Deactivate all paths before restarting them Mika Westerberg
2019-02-11 6:35 ` Lukas Wunner
2019-02-11 8:52 ` Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 16/28] thunderbolt: Discover preboot PCIe paths the boot firmware established Mika Westerberg
2019-02-12 17:49 ` Lukas Wunner
2019-02-12 18:34 ` Mika Westerberg
2019-02-12 19:42 ` Lukas Wunner
2019-02-13 8:30 ` Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 17/28] thunderbolt: Add support for full PCIe daisy chains Mika Westerberg
2019-03-24 11:31 ` Lukas Wunner
2019-03-25 9:57 ` Mika Westerberg
2019-03-25 11:16 ` Lukas Wunner
2019-03-25 11:22 ` Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 18/28] thunderbolt: Scan only valid NULL adapter ports in hotplug Mika Westerberg
2019-02-12 14:04 ` Lukas Wunner
2019-02-12 18:46 ` Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 19/28] thunderbolt: Generalize port finding routines to support all port types Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 20/28] thunderbolt: Rework NFC credits handling Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 21/28] thunderbolt: Add support for Display Port tunnels Mika Westerberg
2019-02-07 14:28 ` Andy Shevchenko
2019-02-06 13:17 ` [PATCH v2 22/28] thunderbolt: Run tb_xdp_handle_request() in system workqueue Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 23/28] thunderbolt: Add XDomain UUID exchange support Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 24/28] thunderbolt: Add support for DMA tunnels Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 25/28] thunderbolt: Make tb_switch_alloc() return ERR_PTR() Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 26/28] thunderbolt: Add support for XDomain connections Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 27/28] thunderbolt: Make rest of the logging to happen at debug level Mika Westerberg
2019-02-06 13:17 ` [PATCH v2 28/28] thunderbolt: Start firmware on Titan Ridge Apple systems Mika Westerberg
2019-02-07 14:22 ` Andy Shevchenko [this message]
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