From: Anisa Su <anisa.su@samsung.com>
Date: Mon, 14 Jul 2025 17:44:59 +0000 (+0100)
Subject: hw/mem: cxl_type3: Add dsmas_flags to CXLDCRegion struct
X-Git-Tag: v10.1.0-rc0~19^2~8
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d1607cc299f40d0f0749ce808e9776196f7ef85;p=thirdparty%2Fqemu.git

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 d898cfd617..6b0889c9ae 100644
--- 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 7eade9cf8a..7e0a66906f 100644
--- 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 {