[PATCH 1/4] cxl/mailbox: change CCI cmd set structure to be a member, not a refernce

[Gregory Price <gourry.memverge@gmail.com>]

This allows devices to have fully customized CCIs, along with complex
devices where wrapper devices can override or add additional CCI
commands without having to replicate full command structures or
pollute a base device with every command that might ever be used.

Signed-off-by: Gregory Price <gregory.price@memverge.com>
---
 hw/cxl/cxl-mailbox-utils.c  | 18 ++++++++++++++----
 include/hw/cxl/cxl_device.h |  2 +-
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 2819914e8d..ddee3f1718 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -1373,9 +1373,19 @@ void cxl_init_cci(CXLCCI *cci, size_t payload_max)
                                  bg_timercb, cci);
 }
 
+static void cxl_copy_cci_commands(CXLCCI *cci, const struct cxl_cmd (*cxl_cmds)[256]) {
+    for (int set = 0; set < 256; set++) {
+        for (int cmd = 0; cmd < 256; cmd++) {
+            if (cxl_cmds[set][cmd].handler) {
+                cci->cxl_cmd_set[set][cmd] = cxl_cmds[set][cmd];
+            }
+        }
+    }
+}
+
 void cxl_initialize_mailbox_swcci(CXLCCI *cci, DeviceState *intf, DeviceState *d, size_t payload_max)
 {
-    cci->cxl_cmd_set = cxl_cmd_set_sw;
+    cxl_copy_cci_commands(cci, cxl_cmd_set_sw);
     cci->d = d;
     cci->intf = intf;
     cxl_init_cci(cci, payload_max);
@@ -1383,7 +1393,7 @@ void cxl_initialize_mailbox_swcci(CXLCCI *cci, DeviceState *intf, DeviceState *d
 
 void cxl_initialize_mailbox_t3(CXLCCI *cci, DeviceState *d, size_t payload_max)
 {
-    cci->cxl_cmd_set = cxl_cmd_set;
+    cxl_copy_cci_commands(cci, cxl_cmd_set);
     cci->d = d;
  
     /* No separation for PCI MB as protocol handled in PCI device */
@@ -1398,7 +1408,7 @@ static const struct cxl_cmd cxl_cmd_set_t3_mctp[256][256] = {
 void cxl_initialize_t3_mctpcci(CXLCCI *cci, DeviceState *d, DeviceState *intf,
                                size_t payload_max)
 {
-    cci->cxl_cmd_set = cxl_cmd_set_t3_mctp;
+    cxl_copy_cci_commands(cci, cxl_cmd_set_t3_mctp);
     cci->d = d;
     cci->intf = intf;
     cxl_init_cci(cci, payload_max);
@@ -1414,7 +1424,7 @@ static const struct cxl_cmd cxl_cmd_set_usp_mctp[256][256] = {
 
 void cxl_initialize_usp_mctpcci(CXLCCI *cci, DeviceState *d, DeviceState *intf, size_t payload_max)
 {
-    cci->cxl_cmd_set = cxl_cmd_set_usp_mctp;
+    cxl_copy_cci_commands(cci, cxl_cmd_set_usp_mctp);
     cci->d = d;
     cci->intf = intf;
     cxl_init_cci(cci, payload_max);
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index c68981b618..9a3c8b2dfa 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -163,7 +163,7 @@ typedef struct CXLEventLog {
 } CXLEventLog;
 
 typedef struct CXLCCI {
-    const struct cxl_cmd (*cxl_cmd_set)[256];
+    struct cxl_cmd cxl_cmd_set[256][256];
     struct cel_log {
         uint16_t opcode;
         uint16_t effect;
-- 
2.39.1