[v6,08/43] hw/cxl/device: Add cheap EVENTS implementation (8.2.9.1)

Commit Message

Jonathan Cameron Feb. 11, 2022, 12:07 p.m. UTC

From: Ben Widawsky <[e-mail]>

Using the previously implemented stubbed helpers, it is now possible to
easily add the missing, required commands to the implementation.

Signed-off-by: Ben Widawsky <[e-mail]>
Signed-off-by: Jonathan Cameron <[e-mail]>
Reviewed-by: Alex Bennée <[e-mail]>
---
 hw/cxl/cxl-mailbox-utils.c | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

Patch

diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index d497ec50a6..8aa1b1e525 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -38,6 +38,14 @@ 
  *  a register interface that already deals with it.
  */
 
+enum {
+    EVENTS      = 0x01,
+        #define GET_RECORDS   0x0
+        #define CLEAR_RECORDS   0x1
+        #define GET_INTERRUPT_POLICY   0x2
+        #define SET_INTERRUPT_POLICY   0x3
+};
+
 /* 8.2.8.4.5.1 Command Return Codes */
 typedef enum {
     CXL_MBOX_SUCCESS = 0x0,
@@ -93,9 +101,26 @@  struct cxl_cmd {
         return CXL_MBOX_SUCCESS;                                          \
     }
 
+DEFINE_MAILBOX_HANDLER_ZEROED(events_get_records, 0x20);
+DEFINE_MAILBOX_HANDLER_NOP(events_clear_records);
+DEFINE_MAILBOX_HANDLER_ZEROED(events_get_interrupt_policy, 4);
+DEFINE_MAILBOX_HANDLER_NOP(events_set_interrupt_policy);
+
 static QemuUUID cel_uuid;
 
-static struct cxl_cmd cxl_cmd_set[256][256] = {};
+#define IMMEDIATE_CONFIG_CHANGE (1 << 1)
+#define IMMEDIATE_LOG_CHANGE (1 << 4)
+
+static struct cxl_cmd cxl_cmd_set[256][256] = {
+    [EVENTS][GET_RECORDS] = { "EVENTS_GET_RECORDS",
+        cmd_events_get_records, 1, 0 },
+    [EVENTS][CLEAR_RECORDS] = { "EVENTS_CLEAR_RECORDS",
+        cmd_events_clear_records, ~0, IMMEDIATE_LOG_CHANGE },
+    [EVENTS][GET_INTERRUPT_POLICY] = { "EVENTS_GET_INTERRUPT_POLICY",
+        cmd_events_get_interrupt_policy, 0, 0 },
+    [EVENTS][SET_INTERRUPT_POLICY] = { "EVENTS_SET_INTERRUPT_POLICY",
+        cmd_events_set_interrupt_policy, 4, IMMEDIATE_CONFIG_CHANGE },
+};
 
 void cxl_process_mailbox(CXLDeviceState *cxl_dstate)
 {