From: Anisa Su <anisa...@samsung.com>
FM DCD Managment command 0x5605 implemented per CXL r3.2 Spec Section 7.6.7.6.6
Signed-off-by: Anisa Su <anisa...@samsung.com>
---
hw/cxl/cxl-mailbox-utils.c | 62 ++++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 7ee5be00bc..6c57e0deac 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -124,6 +124,7 @@ enum {
#define SET_DC_REGION_CONFIG 0x2
#define GET_DC_REGION_EXTENT_LIST 0x3
#define INITIATE_DC_ADD 0x4
+ #define INITIATE_DC_RELEASE 0x5
};
/* CCI Message Format CXL r3.1 Figure 7-19 */
@@ -3685,6 +3686,60 @@ static CXLRetCode cmd_fm_initiate_dc_add(const struct
cxl_cmd *cmd,
return CXL_MBOX_SUCCESS;
}
+#define CXL_EXTENT_REMOVAL_POLICY_MASK 0x7
+/* CXL r3.2 Section 7.6.7.6.6 Initiate Dynamic Capacity Release (Opcode 5605h)
*/
+static CXLRetCode cmd_fm_initiate_dc_release(const struct cxl_cmd *cmd,
+ uint8_t *payload_in,
+ size_t len_in,
+ uint8_t *payload_out,
+ size_t *len_out,
+ CXLCCI *cci)
+{
+ struct {
+ uint16_t host_id;
+ uint8_t flags;
+ uint8_t reg_num;
+ uint64_t length;
+ uint8_t tag[0x10];
+ uint32_t ext_count;
+ CXLDCExtentRaw extents[];
+ } QEMU_PACKED *in = (void *)payload_in;
+ CXLType3Dev *ct3d = CXL_TYPE3(cci->d);
+ CXLUpdateDCExtentListInPl *list;
+ CXLDCExtentList updated_list;
+ uint32_t updated_list_size;
+ int rc;
+
+ switch (in->flags & CXL_EXTENT_REMOVAL_POLICY_MASK) {
+ case CXL_EXTENT_REMOVAL_POLICY_PRESCRIPTIVE:
+ list = calloc(1, (sizeof(*list) +
+ in->ext_count * sizeof(*list->updated_entries)));
+ convert_raw_extents(in->extents, list, in->ext_count);
+ rc = cxl_detect_malformed_extent_list(ct3d, list);
+ if (rc) {
+ return rc;
+ }
+ rc = cxl_dc_extent_release_dry_run(ct3d,
+ list,
+ &updated_list,
+ &updated_list_size);
+ if (rc) {
+ return rc;
+ }
+ cxl_mbox_create_dc_event_records_for_extents(ct3d,
+ DC_EVENT_RELEASE_CAPACITY,
+ in->extents,
+ in->ext_count);
+ return CXL_MBOX_SUCCESS;
+ default:
+ qemu_log_mask(LOG_UNIMP,
+ "CXL extent selection policy not supported.\n");
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ return CXL_MBOX_SUCCESS;
+}
+
static const struct cxl_cmd cxl_cmd_set[256][256] = {
[INFOSTAT][BACKGROUND_OPERATION_ABORT] = { "BACKGROUND_OPERATION_ABORT",
cmd_infostat_bg_op_abort, 0, 0 },
@@ -3819,6 +3874,13 @@ static const struct cxl_cmd cxl_cmd_set_fm_dcd[256][256]
= {
CXL_MBOX_CONFIG_CHANGE_CXL_RESET |
CXL_MBOX_IMMEDIATE_CONFIG_CHANGE |
CXL_MBOX_IMMEDIATE_DATA_CHANGE) },
+ [FMAPI_DCD_MGMT][INITIATE_DC_RELEASE] = { "INIT_DC_RELEASE",
+ cmd_fm_initiate_dc_release, ~0,
+ (CXL_MBOX_CONFIG_CHANGE_COLD_RESET |
+ CXL_MBOX_CONFIG_CHANGE_CONV_RESET |
+ CXL_MBOX_CONFIG_CHANGE_CXL_RESET |
+ CXL_MBOX_IMMEDIATE_CONFIG_CHANGE |
+ CXL_MBOX_IMMEDIATE_DATA_CHANGE) },
};
/*
--
2.47.2
