[PATCH v2 02/20] cxl: Declare cxl_find_regblock and cxl_probe_component_regs in public header

[<mhonap@nvidia.com>]

From: Manish Honap <mhonap@nvidia.com>

vfio-cxl lives outside drivers/cxl/ but still needs to locate the
component register block and fill cxl_component_reg_map. Those
prototypes were stuck in the internal drivers/cxl/cxl.h.

Move the declarations to include/cxl/cxl.h next to the other
vfio-facing hooks, with stubs when CXL bus support is disabled.
Drop the duplicate prototypes from the private header.

Signed-off-by: Manish Honap <mhonap@nvidia.com>
---
 drivers/cxl/cxl.h |  4 ----
 include/cxl/cxl.h | 16 ++++++++++++++++
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
index 2b1f7d687a0e..10ddab3949ee 100644
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -198,8 +198,6 @@ static inline int ways_to_eiw(unsigned int ways, u8 *eiw)
 #define   CXLDEV_MBOX_BG_CMD_COMMAND_VENDOR_MASK GENMASK_ULL(63, 48)
 #define CXLDEV_MBOX_PAYLOAD_OFFSET 0x20
 
-void cxl_probe_component_regs(struct device *dev, void __iomem *base,
-			      struct cxl_component_reg_map *map);
 void cxl_probe_device_regs(struct device *dev, void __iomem *base,
 			   struct cxl_device_reg_map *map);
 int cxl_map_device_regs(const struct cxl_register_map *map,
@@ -211,8 +209,6 @@ enum cxl_regloc_type;
 int cxl_count_regblock(struct pci_dev *pdev, enum cxl_regloc_type type);
 int cxl_find_regblock_instance(struct pci_dev *pdev, enum cxl_regloc_type type,
 			       struct cxl_register_map *map, unsigned int index);
-int cxl_find_regblock(struct pci_dev *pdev, enum cxl_regloc_type type,
-		      struct cxl_register_map *map);
 int cxl_setup_regs(struct cxl_register_map *map);
 struct cxl_dport;
 int cxl_dport_map_rcd_linkcap(struct pci_dev *pdev, struct cxl_dport *dport);
diff --git a/include/cxl/cxl.h b/include/cxl/cxl.h
index d86faebb99b7..8ef7915a51f7 100644
--- a/include/cxl/cxl.h
+++ b/include/cxl/cxl.h
@@ -286,17 +286,33 @@ struct cxl_region *cxl_create_region(struct cxl_root_decoder *cxlrd,
 				     struct cxl_endpoint_decoder **cxled,
 				     int ways);
 
+struct pci_dev;
+enum cxl_regloc_type;
+
 #ifdef CONFIG_CXL_BUS
 
 int cxl_get_hdm_info(struct cxl_dev_state *cxlds, u8 *count,
 		     resource_size_t *offset, resource_size_t *size);
 
+int cxl_find_regblock(struct pci_dev *pdev, enum cxl_regloc_type type,
+		      struct cxl_register_map *map);
+void cxl_probe_component_regs(struct device *dev, void __iomem *base,
+			      struct cxl_component_reg_map *map);
+
 #else
 
 static inline
 int cxl_get_hdm_info(struct cxl_dev_state *cxlds, u8 *count,
 		     resource_size_t *offset, resource_size_t *size)
 { return -EOPNOTSUPP; }
+static inline int
+cxl_find_regblock(struct pci_dev *pdev, enum cxl_regloc_type type,
+		  struct cxl_register_map *map)
+{ return -EOPNOTSUPP; }
+static inline void
+cxl_probe_component_regs(struct device *dev, void __iomem *base,
+			 struct cxl_component_reg_map *map)
+{ }
 
 #endif /* CONFIG_CXL_BUS */
 
-- 
2.25.1