[RFC PATCH v3 07/31] hw/cxl/device: Add cheap EVENTS implementation (8.2.9.1)

Ben Widawsky
2021-02-02T01:01:07Z

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 <ben.widawsky@intel.com>
---
hw/cxl/cxl-mailbox-utils.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 466055b01a..7c939a1851 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -37,6 +37,14 @@
* 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,
@@ -105,10 +113,23 @@ 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);
+
+#define IMMEDIATE_CONFIG_CHANGE (1 << 1)
+#define IMMEDIATE_LOG_CHANGE (1 << 4)
+
#define CXL_CMD(s, c, in, cel_effect) \
[s][c] = { stringify(s##_##c), cmd_##s##_##c, in, cel_effect }

-static struct cxl_cmd cxl_cmd_set[256][256] = {};
+static struct cxl_cmd cxl_cmd_set[256][256] = {
+ CXL_CMD(EVENTS, GET_RECORDS, 1, 0),
+ CXL_CMD(EVENTS, CLEAR_RECORDS, ~0, IMMEDIATE_LOG_CHANGE),
+ CXL_CMD(EVENTS, GET_INTERRUPT_POLICY, 0, 0),
+ CXL_CMD(EVENTS, SET_INTERRUPT_POLICY, 4, IMMEDIATE_CONFIG_CHANGE),
+};

#undef CXL_CMD

--
2.30.0