cxl/pci: Convert register block identifiers to an enum

In preparation for passing around the Register Block Indicator (RBI) as
a parameter, it is desirable to convert the type to an enum so that the
interface can use a well defined parameter.

Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
[djbw: changelog fixups ]
Link: https://lore.kernel.org/r/163379784199.692348.4366131432595112771.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/cxl/pci.h b/drivers/cxl/pci.h
index 8c1a588..7d3e4bf 100644 (file)
--- a/drivers/cxl/pci.h
+++ b/drivers/cxl/pci.h
@@ -20,13 +20,15 @@
 #define CXL_REGLOC_BIR_MASK GENMASK(2, 0)
 
 /* Register Block Identifier (RBI) */
-#define CXL_REGLOC_RBI_MASK GENMASK(15, 8)
-#define CXL_REGLOC_RBI_EMPTY 0
-#define CXL_REGLOC_RBI_COMPONENT 1
-#define CXL_REGLOC_RBI_VIRT 2
-#define CXL_REGLOC_RBI_MEMDEV 3
-#define CXL_REGLOC_RBI_TYPES CXL_REGLOC_RBI_MEMDEV + 1
+enum cxl_regloc_type {
+       CXL_REGLOC_RBI_EMPTY = 0,
+       CXL_REGLOC_RBI_COMPONENT,
+       CXL_REGLOC_RBI_VIRT,
+       CXL_REGLOC_RBI_MEMDEV,
+       CXL_REGLOC_RBI_TYPES
+};
 
+#define CXL_REGLOC_RBI_MASK GENMASK(15, 8)
 #define CXL_REGLOC_ADDR_MASK GENMASK(31, 16)
 
 #endif /* __CXL_PCI_H__ */