[RFC PATCH v2 5/6] cxl: add definition for transaction types

[Shiyang Ruan via]

The transaction types are defined in General Media Event Record/DRAM Event
per CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43 and
Section 8.2.9.2.1.2; Table 8-44.  Add them for Event Record handler use.

Signed-off-by: Shiyang Ruan <ruansy.f...@fujitsu.com>
---
 include/linux/cxl-event.h | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/include/linux/cxl-event.h b/include/linux/cxl-event.h
index 03fa6d50d46f..0a50754fc330 100644
--- a/include/linux/cxl-event.h
+++ b/include/linux/cxl-event.h
@@ -23,6 +23,19 @@ struct cxl_event_generic {
        u8 data[CXL_EVENT_RECORD_DATA_LENGTH];
 } __packed;
 
+/*
+ * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43
+ */
+enum cxl_event_transaction_type {
+       CXL_EVENT_TRANSACTION_UNKNOWN = 0X00,
+       CXL_EVENT_TRANSACTION_READ,
+       CXL_EVENT_TRANSACTION_WRITE,
+       CXL_EVENT_TRANSACTION_SCAN_MEDIA,
+       CXL_EVENT_TRANSACTION_INJECT_POISON,
+       CXL_EVENT_TRANSACTION_MEDIA_SCRUB,
+       CXL_EVENT_TRANSACTION_MEDIA_MANAGEMENT,
+};
+
 /*
  * General Media Event Record
  * CXL rev 3.0 Section 8.2.9.2.1.1; Table 8-43
@@ -33,7 +46,7 @@ struct cxl_event_gen_media {
        __le64 phys_addr;
        u8 descriptor;
        u8 type;
-       u8 transaction_type;
+       u8 transaction_type;    /* enum cxl_event_transaction_type */
        u8 validity_flags[2];
        u8 channel;
        u8 rank;
@@ -52,7 +65,7 @@ struct cxl_event_dram {
        __le64 phys_addr;
        u8 descriptor;
        u8 type;
-       u8 transaction_type;
+       u8 transaction_type;    /* enum cxl_event_transaction_type */
        u8 validity_flags[2];
        u8 channel;
        u8 rank;
-- 
2.34.1