From 4474ce565ee4490fb4e6d8443b617a9d98ae10ff Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Tue, 14 Feb 2023 11:41:30 -0800 Subject: cxl/hdm: Create emulated cxl_hdm for devices that do not have HDM decoders CXL rev3 spec 8.1.3 RCDs may not have HDM register blocks. Create a fake HDM with information from the CXL PCIe DVSEC registers. The decoder count will be set to the HDM count retrieved from the DVSEC cap register. Reviewed-by: Jonathan Cameron Signed-off-by: Dave Jiang Link: https://lore.kernel.org/r/167640368994.935665.15831225724059704620.stgit@dwillia2-xfh.jf.intel.com Signed-off-by: Dan Williams --- drivers/cxl/port.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/cxl/port.c') diff --git a/drivers/cxl/port.c b/drivers/cxl/port.c index d3a708e32565..9f9cc268b597 100644 --- a/drivers/cxl/port.c +++ b/drivers/cxl/port.c @@ -54,7 +54,7 @@ static int cxl_port_probe(struct device *dev) return devm_cxl_add_passthrough_decoder(port); } - cxlhdm = devm_cxl_setup_hdm(port); + cxlhdm = devm_cxl_setup_hdm(port, &info); if (IS_ERR(cxlhdm)) return PTR_ERR(cxlhdm); -- cgit v1.2.3-73-gaa49b