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From:   Daehwan Jung <dh10.jung@samsung.com>
To:     Mathias Nyman <mathias.nyman@intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     linux-usb@vger.kernel.org (open list:USB XHCI DRIVER),
        linux-kernel@vger.kernel.org (open list),
        Howard Yen <howardyen@google.com>,
        Jack Pham <jackp@codeaurora.org>,
        Puma Hsu <pumahsu@google.com>,
        "J . Avila" <elavila@google.com>,
        "chihhao . chen" <chihhao.chen@mediatek.com>,
        Daehwan Jung <dh10.jung@samsung.com>, sc.suh@samsung.com,
        cpgs@samsung.com, cpgsproxy5@samsung.com
Subject: [PATCH v1 0/4] support USB offload feature
Date:   Fri,  4 Mar 2022 15:23:54 +0900
Message-Id: <1027007693.21646375403236.JavaMail.epsvc@epcpadp3>
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References: <CGME20220304062609epcas2p1b9e2720d2d7d66438e1eab92546f46cc@epcas2p1.samsung.com>
Precedence: bulk

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. Plus let me add user(xhci-exynos) module 
to see how user could use it. 

To sum up, it's for providing xhci memories to Co-Processor.
It would cover DCBAA, Device Context, Tranfer Ring, Event Ring, ERST.
It needs xhci hooks and to export some xhci symbols.

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@google.com>
Jack Pham <jackp@codeaurora.org>
Puma Hsu <pumahsu@google.com>
J. Avila <elavila@google.com>
chihhao.chen <chihhao.chen@mediatek.com>

Daehwan Jung (4):
  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
  usb: host: add xhci-exynos module

 drivers/usb/host/xhci-exynos.c | 2025 ++++++++++++++++++++++++++++++++
 drivers/usb/host/xhci-exynos.h |  150 +++
 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 +
 9 files changed, 2543 insertions(+), 28 deletions(-)
 create mode 100644 drivers/usb/host/xhci-exynos.c
 create mode 100644 drivers/usb/host/xhci-exynos.h

-- 
2.31.1