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For v3 hw SAS, it supports configuring power state from D0 to D3 for entering Low Power status and power state from D3 to D0 for quit Low Power status. When power state from D0 to D3, HW will send FLR to clear the registers of ECAM and BAR space, and when power state from D3 to D0, it will clear the registers of ECAM space only. So when suspend, need to do like controller reset (including disable interrupts/DQ/PHY/BUS), and also release slots after FLR. When resume, re-config the registers of BAR space. Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.