From: Anisa Su <anisa...@samsung.com>
FM DCD Management command 0x5603 implemented per CXL r3.2 Spec Section 7.6.7.6.4
Very similar to previously implemented command 0x4801.
Signed-off-by: Anisa Su <anisa...@samsung.com>
---
hw/cxl/cxl-mailbox-utils.c | 75 ++++++++++++++++++++++++++++++++++++
include/hw/cxl/cxl_opcodes.h | 1 +
2 files changed, 76 insertions(+)
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index fe38a13f71..a897a34ef9 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -3516,6 +3516,79 @@ static CXLRetCode cmd_fm_set_dc_region_config(const
struct cxl_cmd *cmd,
return CXL_MBOX_SUCCESS;
}
+/* CXL r3.2 section 7.6.7.6.4 Get DC Region Extent Lists (Opcode 5603h) */
+static CXLRetCode cmd_fm_get_dc_region_extent_list(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 rsvd[2];
+ uint32_t extent_cnt;
+ uint32_t start_extent_id;
+ } QEMU_PACKED *in = (void *)payload_in;
+ struct {
+ uint16_t host_id;
+ uint8_t rsvd[2];
+ uint32_t start_extent_id;
+ uint32_t extents_returned;
+ uint32_t total_extents;
+ uint32_t list_generation_num;
+ uint8_t rsvd2[4];
+ CXLDCExtentRaw records[];
+ } QEMU_PACKED *out = (void *)payload_out;
+ QEMU_BUILD_BUG_ON(sizeof(*in) != 0xc);
+ CXLType3Dev *ct3d = CXL_TYPE3(cci->d);
+ CXLDCExtent *ent;
+ CXLDCExtentRaw *out_rec;
+ uint16_t record_count = 0, record_done = 0, i = 0;
+ uint16_t out_pl_len, max_size;
+
+ if (in->host_id != 0) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ if (in->start_extent_id > ct3d->dc.total_extent_count) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ record_count = MIN(in->extent_cnt,
+ ct3d->dc.total_extent_count - in->start_extent_id);
+ max_size = CXL_MAILBOX_MAX_PAYLOAD_SIZE - sizeof(*out);
+ record_count = MIN(record_count, max_size / sizeof(out->records[0]));
+ out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]);
+
+ stw_le_p(&out->host_id, in->host_id);
+ stl_le_p(&out->start_extent_id, in->start_extent_id);
+ stl_le_p(&out->extents_returned, record_count);
+ stl_le_p(&out->total_extents, ct3d->dc.total_extent_count);
+ stl_le_p(&out->list_generation_num, ct3d->dc.ext_list_gen_seq);
+
+ if (record_count > 0) {
+ QTAILQ_FOREACH(ent, &ct3d->dc.extents, node) {
+ if (i++ < in->start_extent_id) {
+ continue;
+ }
+ out_rec = &out->records[record_done];
+ stq_le_p(&out_rec->start_dpa, ent->start_dpa);
+ stq_le_p(&out_rec->len, ent->len);
+ memcpy(&out_rec->tag, ent->tag, 0x10);
+ stw_le_p(&out_rec->shared_seq, ent->shared_seq);
+
+ record_done++;
+ if (record_done == record_count) {
+ break;
+ }
+ }
+ }
+
+ *len_out = out_pl_len;
+ 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 },
@@ -3649,6 +3722,8 @@ 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][GET_DC_REGION_EXTENT_LIST] = {
"GET_DC_REGION_EXTENT_LIST",
+ cmd_fm_get_dc_region_extent_list, 12, 0 },
};
/*
diff --git a/include/hw/cxl/cxl_opcodes.h b/include/hw/cxl/cxl_opcodes.h
index ed4be23b75..ad4e614daa 100644
--- a/include/hw/cxl/cxl_opcodes.h
+++ b/include/hw/cxl/cxl_opcodes.h
@@ -65,5 +65,6 @@ enum {
#define GET_DCD_INFO 0x0
#define GET_HOST_DC_REGION_CONFIG 0x1
#define SET_DC_REGION_CONFIG 0x2
+ #define GET_DC_REGION_EXTENT_LIST 0x3
GLOBAL_MEMORY_ACCESS_EP_MGMT = 0X59
};
--
2.47.2
