[PATCH v9 19/27] cxl: make region type based on endpoint type

alejandro.lucero-palau
2024-12-30T21:45:31Z

From: Alejandro Lucero <alucerop@amd.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@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>
---
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 239fe49bf6a6..8cc959859ede 100644
--- a/drivers/cxl/core/region.c
+++ b/drivers/cxl/core/region.c
@@ -2668,7 +2668,8 @@ 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;

@@ -2690,7 +2691,7 @@ 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,
@@ -2704,7 +2705,7 @@ 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);

@@ -3380,7 +3381,8 @@ 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