firmware/scmi/smt.c

64  * Write SCMI message @msg into a SMT shared buffer @smt.
68 			  struct scmi_msg *msg)
72 	if ((!msg->in_msg && msg->in_msg_sz) ||
73 	    (!msg->out_msg && msg->out_msg_sz))
81 	if (smt->size < (sizeof(*hdr) + msg->in_msg_sz) ||
82 	    smt->size < (sizeof(*hdr) + msg->out_msg_sz)) {
89 	hdr->length = msg->in_msg_sz + sizeof(hdr->msg_header);
92 			  SMT_HEADER_PROTOCOL_ID(msg->protocol_id) |
93 			  SMT_HEADER_MESSAGE_ID(msg->message_id);
95 	memcpy_toio(hdr->msg_payload, msg->in_msg, msg->in_msg_sz);
101  * Read SCMI message from a SMT shared buffer @smt and copy it into @msg.
105 			    struct scmi_msg *msg)
119 	if (hdr->length > msg->out_msg_sz + sizeof(hdr->msg_header)) {
125 	msg->out_msg_sz = hdr->length - sizeof(hdr->msg_header);
126 	memcpy_fromio(msg->out_msg, hdr->msg_payload, msg->out_msg_sz);
142  * Write SCMI message @msg into a SMT_MSG shared buffer @smt.
146 			struct scmi_msg *msg, size_t *buf_size)
150 	if ((!msg->in_msg && msg->in_msg_sz) ||
151 	    (!msg->out_msg && msg->out_msg_sz))
154 	if (smt->size < (sizeof(*hdr) + msg->in_msg_sz) ||
155 	    smt->size < (sizeof(*hdr) + msg->out_msg_sz)) {
160 	*buf_size = msg->in_msg_sz + sizeof(hdr->msg_header);
164 			  SMT_HEADER_PROTOCOL_ID(msg->protocol_id) |
165 			  SMT_HEADER_MESSAGE_ID(msg->message_id);
167 	memcpy(hdr->msg_payload, msg->in_msg, msg->in_msg_sz);
173  * Read SCMI message from a SMT shared buffer @smt and copy it into @msg.
177 			  struct scmi_msg *msg, size_t buf_size)
181 	if (buf_size > msg->out_msg_sz + sizeof(hdr->msg_header)) {
186 	msg->out_msg_sz = buf_size - sizeof(hdr->msg_header);
187 	memcpy(msg->out_msg, hdr->msg_payload, msg->out_msg_sz);