[PATCH v5 14/26] cxl/pci: Store the endpoint's Component Register mappings in struct cxl_dev_state

Terry Bowman
2023-06-07T22:20:53Z

From: Robert Richter <rrichter@amd.com>

Same as for ports and dports, also store the endpoint's Component
Register mappings, use struct cxl_dev_state for that.

Signed-off-by: Robert Richter <rrichter@amd.com>
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
drivers/cxl/cxlmem.h | 3 ++-
drivers/cxl/pci.c | 9 +++++----
2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h
index a2845a7a69d8..2823c5aaf3db 100644
--- a/drivers/cxl/cxlmem.h
+++ b/drivers/cxl/cxlmem.h
@@ -263,6 +263,7 @@ struct cxl_poison_state {
*
* @dev: The device associated with this CXL state
* @cxlmd: The device representing the CXL.mem capabilities of @dev
+ * @comp_map: component register capability mappings
* @regs: Parsed register blocks
* @cxl_dvsec: Offset to the PCIe device DVSEC
* @rcd: operating in RCD mode (CXL 3.0 9.11.8 CXL Devices Attached to an RCH)
@@ -299,7 +300,7 @@ struct cxl_poison_state {
struct cxl_dev_state {
struct device *dev;
struct cxl_memdev *cxlmd;
-
+ struct cxl_register_map comp_map;
struct cxl_regs regs;
int cxl_dvsec;

diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 2975b232fcd1..816b23a6c4aa 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -662,15 +662,16 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
* still be useful for management functions so don't return an error.
*/
cxlds->component_reg_phys = CXL_RESOURCE_NONE;
- rc = cxl_pci_setup_regs(pdev, CXL_REGLOC_RBI_COMPONENT, &map);
+ rc = cxl_pci_setup_regs(pdev, CXL_REGLOC_RBI_COMPONENT,
+ &cxlds->comp_map);
if (rc)
dev_warn(&pdev->dev, "No component registers (%d)\n", rc);
- else if (!map.component_map.ras.valid)
+ else if (!cxlds->comp_map.component_map.ras.valid)
dev_dbg(&pdev->dev, "RAS registers not found\n");

- cxlds->component_reg_phys = map.resource;
+ cxlds->component_reg_phys = cxlds->comp_map.resource;

- rc = cxl_map_component_regs(&map, &cxlds->regs.component,
+ rc = cxl_map_component_regs(&cxlds->comp_map, &cxlds->regs.component,
BIT(CXL_CM_CAP_CAP_ID_RAS));
if (rc)
dev_dbg(&pdev->dev, "Failed to map RAS capability.\n");
--
2.34.1