linux-kernel - [PATCH 0/3] support USB offload feature

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Date:   Thu,  3 Feb 2022 11:57:31 +0900
From:   Daehwan Jung <dh10.jung@...sung.com>
To:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-usb@...r.kernel.org (open list:USB XHCI DRIVER),
        linux-kernel@...r.kernel.org (open list),
        Howard Yen <howardyen@...gle.com>,
        Jack Pham <jackp@...eaurora.org>,
        Puma Hsu <pumahsu@...gle.com>,
        "J . Avila" <elavila@...gle.com>,
        Daehwan Jung <dh10.jung@...sung.com>
Subject: [PATCH 0/3] support USB offload feature

This patchset is for USB offload feature, which makes Co-processor to use
some memories of xhci. Especially it's useful for USB Audio scenario.
Audio stream would get shortcut because Co-processor directly write/read
data in xhci memories. It could get speed-up using faster memory like SRAM.
That's why this also gives vendors flexibilty of memory management.
Below pathches have been merged in AOSP kernel(android12-5.10) and I put
together and split into 3 patches.

ANDROID: usb: host: fix slab-out-of-bounds in xhci_vendor_get_ops
ANDROID: usb: export built-in tracepoint functions
ANDROID: usb: host: Use old init scheme when hook unavailable
ANDROID: usb: host: free the offload TR by vendor hook
ANDROID: usb: host: xhci: provide function prototype for xhci_address_device
ANDROID: usb: host: add bus_suspend/bus_resume to xhci overrides
ANDROID: usb: host: add address_device to xhci overrides
ANDROID: usb: host: add max packet parameter on alloc_transfer_ring hook
ANDROID: usb: host: add xhci hooks for vendor specific container context
ANDROID: usb: host: export xhci symbols for ring management
ANDROID: usb: host: export additional xhci symbols for ring management
FROMLIST: usb: xhci-plat: add xhci_plat_priv_overwrite
FROMLIST: usb: host: export symbols for xhci hooks usage
FROMLIST: usb: host: add xhci hooks for USB offload

Below are owners of patches.

Howard Yen <howardyen@...gle.com>
Jack Pham <jackp@...eaurora.org>
Puma Hsu <pumahsu@...gle.com>
J. Avila <elavila@...gle.com>
chihhao.chen <chihhao.chen@...iatek.com>)

Daehwan Jung (3):
  usb: host: export symbols for xhci hooks usage
  usb: host: add xhci hooks for USB offload
  usb: host: add some to xhci overrides for USB offload

 drivers/usb/host/xhci-hub.c  |   7 ++
 drivers/usb/host/xhci-mem.c  | 160 ++++++++++++++++++++++++++++++-----
 drivers/usb/host/xhci-plat.c |  43 +++++++++-
 drivers/usb/host/xhci-plat.h |   8 ++
 drivers/usb/host/xhci-ring.c |  22 ++++-
 drivers/usb/host/xhci.c      | 104 ++++++++++++++++++++++-
 drivers/usb/host/xhci.h      |  52 ++++++++++++
 7 files changed, 368 insertions(+), 28 deletions(-)

-- 
2.31.1