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cxl/test: Add Get Supported Features mailbox command support

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Add cxl-test emulation of Get Supported Features mailbox command.
Currently only adding a test feature with feature identifier of
all f's for testing.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Link: https://patch.msgid.link/20250220194438.2281088-4-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
This commit is contained in:
Dave Jiang 2025-02-20 12:42:41 -07:00
parent f0e6a2329b
commit 44818d387e
1 changed files with 70 additions and 0 deletions
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70
tools/testing/cxl/test/mem.c
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@ -44,6 +44,10 @@ static struct cxl_cel_entry mock_cel[] = {
.opcode = cpu_to_le16(CXL_MBOX_OP_GET_SUPPORTED_LOGS),
.effect = CXL_CMD_EFFECT_NONE,
},
{
.opcode = cpu_to_le16(CXL_MBOX_OP_GET_SUPPORTED_FEATURES),
.effect = CXL_CMD_EFFECT_NONE,
},
{
.opcode = cpu_to_le16(CXL_MBOX_OP_IDENTIFY),
.effect = CXL_CMD_EFFECT_NONE,
@ -1354,6 +1358,69 @@ static int mock_activate_fw(struct cxl_mockmem_data *mdata,
return -EINVAL;
}
#define CXL_VENDOR_FEATURE_TEST \
UUID_INIT(0xffffffff, 0xffff, 0xffff, 0xff, 0xff, 0xff, 0xff, 0xff, \
0xff, 0xff, 0xff)
static void fill_feature_vendor_test(struct cxl_feat_entry *feat)
{
feat->uuid = CXL_VENDOR_FEATURE_TEST;
feat->id = 0;
feat->get_feat_size = cpu_to_le16(0x4);
feat->set_feat_size = cpu_to_le16(0x4);
feat->flags = cpu_to_le32(CXL_FEATURE_F_CHANGEABLE |
CXL_FEATURE_F_DEFAULT_SEL |
CXL_FEATURE_F_SAVED_SEL);
feat->get_feat_ver = 1;
feat->set_feat_ver = 1;
feat->effects = cpu_to_le16(CXL_CMD_CONFIG_CHANGE_COLD_RESET |
CXL_CMD_EFFECTS_VALID);
}
#define MAX_CXL_TEST_FEATS 1
static int mock_get_supported_features(struct cxl_mockmem_data *mdata,
struct cxl_mbox_cmd *cmd)
{
struct cxl_mbox_get_sup_feats_in *in = cmd->payload_in;
struct cxl_mbox_get_sup_feats_out *out = cmd->payload_out;
struct cxl_feat_entry *feat;
u16 start_idx, count;
if (cmd->size_out < sizeof(*out)) {
cmd->return_code = CXL_MBOX_CMD_RC_PAYLOADLEN;
return -EINVAL;
}
/*
* Current emulation only supports 1 feature
*/
start_idx = le16_to_cpu(in->start_idx);
if (start_idx != 0) {
cmd->return_code = CXL_MBOX_CMD_RC_INPUT;
return -EINVAL;
}
count = le16_to_cpu(in->count);
if (count < struct_size(out, ents, 0)) {
cmd->return_code = CXL_MBOX_CMD_RC_PAYLOADLEN;
return -EINVAL;
}
out->supported_feats = cpu_to_le16(MAX_CXL_TEST_FEATS);
cmd->return_code = 0;
if (count < struct_size(out, ents, MAX_CXL_TEST_FEATS)) {
out->num_entries = 0;
return 0;
}
out->num_entries = cpu_to_le16(MAX_CXL_TEST_FEATS);
feat = out->ents;
fill_feature_vendor_test(feat);
return 0;
}
static int cxl_mock_mbox_send(struct cxl_mailbox *cxl_mbox,
struct cxl_mbox_cmd *cmd)
{
@ -1439,6 +1506,9 @@ static int cxl_mock_mbox_send(struct cxl_mailbox *cxl_mbox,
case CXL_MBOX_OP_ACTIVATE_FW:
rc = mock_activate_fw(mdata, cmd);
break;
case CXL_MBOX_OP_GET_SUPPORTED_FEATURES:
rc = mock_get_supported_features(mdata, cmd);
break;
default:
break;
}