Commit 44818d38 authored by Dave Jiang's avatar Dave Jiang
Browse files

cxl/test: Add Get Supported Features mailbox command support 



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: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: default avatarDan Williams <dan.j.williams@intel.com>
Reviewed-by: default avatarLi Ming <ming.li@zohomail.com>
Link: https://patch.msgid.link/20250220194438.2281088-4-dave.jiang@intel.com


Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
parent f0e6a232

tools/testing/cxl/test/mem.c

+70 −0
Original line number Diff line number Diff line
@@ -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;

	}