[RFC,02/17] hw/cxl/mailbox: Enable mulitple mailbox command sets

Commit Message

Jonathan Cameron July 17, 2023, 5:16 p.m. UTC

Until now, we have supported only a single set of comamnds.
To allow introduction of switch CCI functions, we need to
be able to pick between different sets for a given mailbox
instance.  This patch should make not functional changes, but
enable them in the following patches.

Signed-off-by: Jonathan Cameron <[e-mail]>
---
 include/hw/cxl/cxl_device.h | 12 ++++++++++++
 hw/cxl/cxl-mailbox-utils.c  | 17 ++++-------------
 2 files changed, 16 insertions(+), 13 deletions(-)

Patch

diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index 887a38bdbc..2c239fca47 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -134,6 +134,17 @@  typedef enum {
     CXL_MBOX_MAX = 0x17
 } CXLRetCode;
 
+struct cxl_cmd;
+typedef CXLRetCode (*opcode_handler)(struct cxl_cmd *cmd,
+                                     CXLDeviceState *cxl_dstate, uint16_t *len);
+struct cxl_cmd {
+    const char *name;
+    opcode_handler handler;
+    ssize_t in;
+    uint16_t effect; /* Reported in CEL */
+    uint8_t *payload;
+};
+
 typedef struct CXLEvent {
     CXLEventRecordRaw data;
     QSIMPLEQ_ENTRY(CXLEvent) node;
@@ -202,6 +213,7 @@  typedef struct cxl_device_state {
     uint64_t pmem_size;
     uint64_t vmem_size;
 
+    struct cxl_cmd (*cxl_cmd_set)[256];
     CPMUState cpmu[CXL_NUM_CPMU_INSTANCES];
     CXLEventLog event_logs[CXL_EVENT_TYPE_MAX];
 } CXLDeviceState;
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 1e0d96f64f..c8feeffbeb 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -70,16 +70,6 @@  enum {
         #define CLEAR_POISON           0x2
 };
 
-struct cxl_cmd;
-typedef CXLRetCode (*opcode_handler)(struct cxl_cmd *cmd,
-                                   CXLDeviceState *cxl_dstate, uint16_t *len);
-struct cxl_cmd {
-    const char *name;
-    opcode_handler handler;
-    ssize_t in;
-    uint16_t effect; /* Reported in CEL */
-    uint8_t *payload;
-};
 
 static CXLRetCode cmd_events_get_records(struct cxl_cmd *cmd,
                                          CXLDeviceState *cxlds,
@@ -711,7 +701,7 @@  void cxl_process_mailbox(CXLDeviceState *cxl_dstate)
     uint8_t set = FIELD_EX64(command_reg, CXL_DEV_MAILBOX_CMD, COMMAND_SET);
     uint8_t cmd = FIELD_EX64(command_reg, CXL_DEV_MAILBOX_CMD, COMMAND);
     uint16_t len = FIELD_EX64(command_reg, CXL_DEV_MAILBOX_CMD, LENGTH);
-    cxl_cmd = &cxl_cmd_set[set][cmd];
+    cxl_cmd = &cxl_dstate->cxl_cmd_set[set][cmd];
     h = cxl_cmd->handler;
     if (h) {
         if (len == cxl_cmd->in || cxl_cmd->in == ~0) {
@@ -746,10 +736,11 @@  void cxl_process_mailbox(CXLDeviceState *cxl_dstate)
 
 void cxl_initialize_mailbox(CXLDeviceState *cxl_dstate)
 {
+    cxl_dstate->cxl_cmd_set = cxl_cmd_set;
     for (int set = 0; set < 256; set++) {
         for (int cmd = 0; cmd < 256; cmd++) {
-            if (cxl_cmd_set[set][cmd].handler) {
-                struct cxl_cmd *c = &cxl_cmd_set[set][cmd];
+            if (cxl_dstate->cxl_cmd_set[set][cmd].handler) {
+                struct cxl_cmd *c = &cxl_dstate->cxl_cmd_set[set][cmd];
                 struct cel_log *log =
                     &cxl_dstate->cel_log[cxl_dstate->cel_size];