176baefb2e
After all the soft validation of the region has completed, convey the region configuration to hardware while being careful to commit decoders in specification mandated order. In addition to programming the endpoint decoder base-address, interleave ways and granularity, the switch decoder target lists are also established. While the kernel can enforce spec-mandated commit order, it can not enforce spec-mandated reset order. For example, the kernel can't stop someone from removing an endpoint device that is occupying decoderN in a switch decoder where decoderN+1 is also committed. To reset decoderN, decoderN+1 must be torn down first. That "tear down the world" implementation is saved for a follow-on patch. Callback operations are provided for the 'commit' and 'reset' operations. While those callbacks may prove useful for CXL accelerators (Type-2 devices with memory) the primary motivation is to enable a simple way for cxl_test to intercept those operations. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/165784338418.1758207.14659830845389904356.stgit@dwillia2-xfh.jf.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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| Kbuild | ||
| cxl.c | ||
| mem.c | ||
| mock.c | ||
| mock.h | ||