hw/mem: cxl_type3: Add dsmas_flags to CXLDCRegion struct

Add booleans to DC Region struct to represent dsmas flags (defined in CDAT) in
preparation for the next command, which returns the flags in the next mailbox
command 0x5601.

Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Anisa Su <anisa.su@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20250714174509.1984430-4-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index d898cfd617a33de5c5173509adb7116a36fb7a6b..6b0889c9ae1238c39694b84aa7c4398d352b7bf5 100644 (file)
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -226,10 +226,16 @@ static int ct3_build_cdat_table(CDATSubHeader ***cdat_table, void *priv)
          * future.
          */
         for (i = 0; i < ct3d->dc.num_regions; i++) {
+            ct3d->dc.regions[i].nonvolatile = false;
+            ct3d->dc.regions[i].sharable = false;
+            ct3d->dc.regions[i].hw_managed_coherency = false;
+            ct3d->dc.regions[i].ic_specific_dc_management = false;
+            ct3d->dc.regions[i].rdonly = false;
             ct3_build_cdat_entries_for_mr(&(table[cur_ent]),
                                           dsmad_handle++,
                                           ct3d->dc.regions[i].len,
-                                          false, true, region_base);
+                                          ct3d->dc.regions[i].nonvolatile,
+                                          true, region_base);
             ct3d->dc.regions[i].dsmadhandle = dsmad_handle - 1;
 
             cur_ent += CT3_CDAT_NUM_ENTRIES;

diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 7eade9cf8a41f303d4bf9a51aa9b2b24a5962430..7e0a66906f094840ebec66f0c071785d67f9c98e 100644 (file)
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -133,6 +133,15 @@ typedef enum {
     CXL_MBOX_MAX = 0x20
 } CXLRetCode;
 
+/* r3.2 Section 7.6.7.6.2: Table 7-66: DSMAS Flags Bits */
+typedef enum {
+    CXL_DSMAS_FLAGS_NONVOLATILE = 2,
+    CXL_DSMAS_FLAGS_SHARABLE = 3,
+    CXL_DSMAS_FLAGS_HW_MANAGED_COHERENCY = 4,
+    CXL_DSMAS_FLAGS_IC_SPECIFIC_DC_MANAGEMENT = 5,
+    CXL_DSMAS_FLAGS_RDONLY = 6,
+} CXLDSMASFlags;
+
 typedef struct CXLCCI CXLCCI;
 typedef struct cxl_device_state CXLDeviceState;
 struct cxl_cmd;
@@ -531,6 +540,12 @@ typedef struct CXLDCRegion {
     uint8_t flags;
     unsigned long *blk_bitmap;
     uint64_t supported_blk_size_bitmask;
+    /* Following bools make up dsmas flags, as defined in the CDAT */
+    bool nonvolatile;
+    bool sharable;
+    bool hw_managed_coherency;
+    bool ic_specific_dc_management;
+    bool rdonly;
 } CXLDCRegion;
 
 typedef struct CXLSetFeatureInfo {