diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2022-04-25 11:43:44 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-07-25 12:18:06 -0700 |
| commit | 23a22cd1c98be518774fe7f7e8a5203af050525a (patch) | |
| tree | 023f45987cce6345b543ac60ecdb32654735a1db /block | |
| parent | 80d10a6cee05029cae9d9d6e8ddb799ea6d01e0c (diff) | |
| download | linux-23a22cd1c98be518774fe7f7e8a5203af050525a.tar.bz2 | |
cxl/region: Allocate HPA capacity to regions
After a region's interleave parameters (ways and granularity) are set,
add a way for regions to allocate HPA (host physical address space) from
the free capacity in their parent root-decoder. The allocator for this
capacity reuses the 'struct resource' based allocator used for
CONFIG_DEVICE_PRIVATE.
Once the tuple of "ways, granularity, [uuid], and size" is set the
region configuration transitions to the CXL_CONFIG_INTERLEAVE_ACTIVE
state which is a precursor to allowing endpoint decoders to be added to
a region.
Co-developed-by: Ben Widawsky <bwidawsk@kernel.org>
Signed-off-by: Ben Widawsky <bwidawsk@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/165784335630.1758207.420216490941955417.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions