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cxl/hdm: Emulate HDM decoder from DVSEC range registers

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In the case where HDM decoder register block exists but is not programmed
and at the same time the DVSEC range register range is active, populate the
CXL decoder object 'cxl_decoder' with info from DVSEC range registers.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/167640368454.935665.13806415120298330717.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dave Jiang
2023-02-14 11:41:24 -08:00
committed by Dan Williams
parent 9de321e93c
commit b777e9bec9
7 changed files with 45 additions and 11 deletions
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3
tools/testing/cxl/test/cxl.c
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@@ -701,7 +701,8 @@ static int mock_decoder_reset(struct cxl_decoder *cxld)
return 0;
}
static int mock_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm)
static int mock_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm,
struct cxl_endpoint_dvsec_info *info)
{
struct cxl_port *port = cxlhdm->port;
struct cxl_port *parent_port = to_cxl_port(port->dev.parent);