netdev - [PATCH v2 11/15] cxl: make region type based on endpoint type

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Message-ID: <20240715172835.24757-12-alejandro.lucero-palau@amd.com>
Date: Mon, 15 Jul 2024 18:28:31 +0100
From: <alejandro.lucero-palau@....com>
To: <linux-cxl@...r.kernel.org>, <netdev@...r.kernel.org>,
	<dan.j.williams@...el.com>, <martin.habets@...inx.com>,
	<edward.cree@....com>, <davem@...emloft.net>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <edumazet@...gle.com>, <richard.hughes@....com>
CC: Alejandro Lucero <alucerop@....com>
Subject: [PATCH v2 11/15] cxl: make region type based on endpoint type

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

Current code is expecting Type3 or CXL_DECODER_HOSTONLYMEM devices only.
Suport for Type2 implies region type needs to be based on the endpoint
type instead.

Signed-off-by: Alejandro Lucero <alucerop@....com>
---
 drivers/cxl/core/region.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
index ca464bfef77b..5cc71b8868bc 100644
--- a/drivers/cxl/core/region.c
+++ b/drivers/cxl/core/region.c
@@ -2645,7 +2645,8 @@ static ssize_t create_ram_region_show(struct device *dev,
 }
 
 static struct cxl_region *__create_region(struct cxl_root_decoder *cxlrd,
-					  enum cxl_decoder_mode mode, int id)
+					  enum cxl_decoder_mode mode, int id,
+					  enum cxl_decoder_type target_type)
 {
 	int rc;
 
@@ -2667,7 +2668,7 @@ 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_pmem_region_store(struct device *dev,
@@ -2682,7 +2683,8 @@ static ssize_t create_pmem_region_store(struct device *dev,
 	if (rc != 1)
 		return -EINVAL;
 
-	cxlr = __create_region(cxlrd, CXL_DECODER_PMEM, id);
+	cxlr = __create_region(cxlrd, CXL_DECODER_PMEM, id,
+			       CXL_DECODER_HOSTONLYMEM);
 	if (IS_ERR(cxlr))
 		return PTR_ERR(cxlr);
 
@@ -2702,7 +2704,8 @@ static ssize_t create_ram_region_store(struct device *dev,
 	if (rc != 1)
 		return -EINVAL;
 
-	cxlr = __create_region(cxlrd, CXL_DECODER_RAM, id);
+	cxlr = __create_region(cxlrd, CXL_DECODER_RAM, id,
+			       CXL_DECODER_HOSTONLYMEM);
 	if (IS_ERR(cxlr))
 		return PTR_ERR(cxlr);
 
@@ -3364,7 +3367,8 @@ static struct cxl_region *construct_region(struct cxl_root_decoder *cxlrd,
 
 	do {
 		cxlr = __create_region(cxlrd, cxled->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)) {
-- 
2.17.1