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cxl: Make region type based on endpoint type

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Current code is expecting Type3 or CXL_DECODER_HOSTONLYMEM devices only.
Support for Type2 implies region type needs to be based on the endpoint
type HDM-D[B] instead.

Signed-off-by: Alejandro Lucero <alucerop@amd.com>
Reviewed-by: Zhi Wang <zhiw@nvidia.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Ben Cheatham <benjamin.cheatham@amd.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Davidlohr Bueso <daves@stgolabs.net>
Reviewed-by: Gregory Price <gourry@gourry.net>
Tested-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Link: https://patch.msgid.link/20260228173603.1125109-2-alejandro.lucero-palau@amd.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
This commit is contained in:
Alejandro Lucero 2026-02-28 17:36:01 +00:00 committed by Dave Jiang
parent d537d953c4
commit 09d065d256
1 changed files with 6 additions and 4 deletions
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10
drivers/cxl/core/region.c
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@ -2650,7 +2650,8 @@ static ssize_t create_ram_region_show(struct device *dev,
}
static struct cxl_region *__create_region(struct cxl_root_decoder *cxlrd,
enum cxl_partition_mode mode, int id)
enum cxl_partition_mode mode, int id,
enum cxl_decoder_type target_type)
{
int rc;
@ -2672,7 +2673,7 @@ static struct cxl_region *__create_region(struct cxl_root_decoder *cxlrd,
return ERR_PTR(-EBUSY);
}
return devm_cxl_add_region(cxlrd, id, mode, CXL_DECODER_HOSTONLYMEM);
return devm_cxl_add_region(cxlrd, id, mode, target_type);
}
static ssize_t create_region_store(struct device *dev, const char *buf,
@ -2686,7 +2687,7 @@ static ssize_t create_region_store(struct device *dev, const char *buf,
if (rc != 1)
return -EINVAL;
cxlr = __create_region(cxlrd, mode, id);
cxlr = __create_region(cxlrd, mode, id, CXL_DECODER_HOSTONLYMEM);
if (IS_ERR(cxlr))
return PTR_ERR(cxlr);
@ -3902,7 +3903,8 @@ static struct cxl_region *construct_region(struct cxl_root_decoder *cxlrd,
do {
cxlr = __create_region(cxlrd, cxlds->part[part].mode,
atomic_read(&cxlrd->region_id));
atomic_read(&cxlrd->region_id),
cxled->cxld.target_type);
} while (IS_ERR(cxlr) && PTR_ERR(cxlr) == -EBUSY);
if (IS_ERR(cxlr)) {