diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2022-01-11 17:06:40 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-07-26 21:23:01 +0200 |
| commit | 04ad63f086d1a9649b8b082748cbc7a570ade461 (patch) | |
| tree | b9bfa0e0a44ce367490fbabe100a0ccde8960fc3 /drivers/cxl/core/port.c | |
| parent | cxl/pmem: Fix offline_nvdimm_bus() to offline by bridge (diff) | |
| download | linux-04ad63f086d1a9649b8b082748cbc7a570ade461.tar.xz linux-04ad63f086d1a9649b8b082748cbc7a570ade461.zip | |
cxl/region: Introduce cxl_pmem_region objects
The LIBNVDIMM subsystem is a platform agnostic representation of system
NVDIMM / persistent memory resources. To date, the CXL subsystem's
interaction with LIBNVDIMM has been to register an nvdimm-bridge device
and cxl_nvdimm objects to proxy CXL capabilities into existing LIBNVDIMM
subsystem mechanics.
With regions the approach is the same. Create a new cxl_pmem_region
object to proxy CXL region details into a LIBNVDIMM definition. With
this enabling LIBNVDIMM can partition CXL persistent memory regions with
legacy namespace labels. A follow-on patch will add CXL region label and
CXL namespace label support to persist region configurations across
driver reload / system-reset events.
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/165784340111.1758207.3036498385188290968.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl/core/port.c')
| -rw-r--r-- | drivers/cxl/core/port.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c index ba66ce25de30..3d2d0119cc3d 100644 --- a/drivers/cxl/core/port.c +++ b/drivers/cxl/core/port.c @@ -44,6 +44,8 @@ static int cxl_device_id(struct device *dev) return CXL_DEVICE_NVDIMM_BRIDGE; if (dev->type == &cxl_nvdimm_type) return CXL_DEVICE_NVDIMM; + if (dev->type == CXL_PMEM_REGION_TYPE()) + return CXL_DEVICE_PMEM_REGION; if (is_cxl_port(dev)) { if (is_cxl_root(to_cxl_port(dev))) return CXL_DEVICE_ROOT; |