netdev - [PATCH v12 15/23] cxl: make region type based on endpoint type

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Message-ID: <20250331144555.1947819-16-alejandro.lucero-palau@amd.com>
Date: Mon, 31 Mar 2025 15:45:47 +0100
From: <alejandro.lucero-palau@....com>
To: <linux-cxl@...r.kernel.org>, <netdev@...r.kernel.org>,
	<dan.j.williams@...el.com>, <edward.cree@....com>, <davem@...emloft.net>,
	<kuba@...nel.org>, <pabeni@...hat.com>, <edumazet@...gle.com>,
	<dave.jiang@...el.com>
CC: Alejandro Lucero <alucerop@....com>, Zhi Wang <zhiw@...dia.com>, "Jonathan
 Cameron" <Jonathan.Cameron@...wei.com>, Ben Cheatham
	<benjamin.cheatham@....com>
Subject: [PATCH v12 15/23] cxl: make region type based on endpoint type

From: Alejandro Lucero <alucerop@....com>

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 instead.

Signed-off-by: Alejandro Lucero <alucerop@....com>
Reviewed-by: Zhi Wang <zhiw@...dia.com>
Reviewed-by: Dave Jiang <dave.jiang@...el.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Reviewed-by: Ben Cheatham <benjamin.cheatham@....com>
---
 drivers/cxl/core/region.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
index 59fb51ff8922..ad63fc7b3ca8 100644
--- a/drivers/cxl/core/region.c
+++ b/drivers/cxl/core/region.c
@@ -2708,7 +2708,8 @@ 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;
 
@@ -2730,7 +2731,7 @@ 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,
@@ -2744,7 +2745,7 @@ 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);
 
@@ -3516,7 +3517,8 @@ 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)) {
-- 
2.34.1