hw/cxl/mailbox: change CCI cmd set structure to be a member, not a reference

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>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Fan Ni <fan.ni@samsung.com>
Message-Id: <20240523174651.1089554-2-nifan.cxl@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 15 insertions, 4 deletions

diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index e5eb97cb91..2c9f50f0f9 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -1447,10 +1447,21 @@ 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);
@@ -1458,7 +1469,7 @@ void cxl_initialize_mailbox_swcci(CXLCCI *cci, DeviceState *intf,
 
 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 */
@@ -1476,7 +1487,7 @@ static const struct cxl_cmd cxl_cmd_set_t3_ld[256][256] = {
 void cxl_initialize_t3_ld_cci(CXLCCI *cci, DeviceState *d, DeviceState *intf,
                                size_t payload_max)
 {
-    cci->cxl_cmd_set = cxl_cmd_set_t3_ld;
+    cxl_copy_cci_commands(cci, cxl_cmd_set_t3_ld);
     cci->d = d;
     cci->intf = intf;
     cxl_init_cci(cci, payload_max);
@@ -1496,7 +1507,7 @@ void cxl_initialize_t3_fm_owned_ld_mctpcci(CXLCCI *cci, DeviceState *d,
                                            DeviceState *intf,
                                            size_t payload_max)
 {
-    cci->cxl_cmd_set = cxl_cmd_set_t3_fm_owned_ld_mctp;
+    cxl_copy_cci_commands(cci, cxl_cmd_set_t3_fm_owned_ld_mctp);
     cci->d = d;
     cci->intf = intf;
     cxl_init_cci(cci, payload_max);