33 	fifo->head = 0;  in fm10k_fifo_init()
45 	return fifo->tail - fifo->head;  in fm10k_fifo_used()
56 	return fifo->size + fifo->head - fifo->tail;  in fm10k_fifo_unused()
67 	return fifo->head == fifo->tail;  in fm10k_fifo_empty()
79 	return (fifo->head + offset) & (fifo->size - 1);  in fm10k_fifo_head_offset()
102 	u32 *head = fifo->buffer + fm10k_fifo_head_offset(fifo, 0);  in fm10k_fifo_head_len()  local
109 	return FM10K_TLV_DWORD_LEN(*head);  in fm10k_fifo_head_len()
123 	fifo->head += len;  in fm10k_fifo_head_drop()
137 	fifo->head = fifo->tail;  in fm10k_fifo_drop_all()
149 static u16 fm10k_mbx_index_len(struct fm10k_mbx_info *mbx, u16 head, u16 tail)  in fm10k_mbx_index_len()  argument
151 	u16 len = tail - head;  in fm10k_mbx_index_len()
202 	u16 head = (mbx->head + offset + 1) & ((mbx->mbmem_len << 1) - 1);  in fm10k_mbx_head_add()  local
205 	return (head > mbx->head) ? --head : ++head;  in fm10k_mbx_head_add()
218 	u16 head = (mbx->head - offset - 1) & ((mbx->mbmem_len << 1) - 1);  in fm10k_mbx_head_sub()  local
221 	return (head < mbx->head) ? ++head : --head;  in fm10k_mbx_head_sub()
350 	u32 *head = fifo->buffer;  in fm10k_mbx_write_copy()  local
365 	head += end;  in fm10k_mbx_write_copy()
371 	for (end = fifo->size - end; len; head = fifo->buffer) {  in fm10k_mbx_write_copy()
379 			fm10k_write_reg(hw, mbmem + tail++, *(head++));  in fm10k_mbx_write_copy()
396 				struct fm10k_mbx_info *mbx, u16 head)  in fm10k_mbx_pull_head()  argument
398 	u16 mbmem_len, len, ack = fm10k_mbx_index_len(mbx, head, mbx->tail);  in fm10k_mbx_pull_head()
442 	u16 end, len, head;  in fm10k_mbx_read_copy()  local
446 	head = fm10k_mbx_head_sub(mbx, len);  in fm10k_mbx_read_copy()
447 	if (head >= mbx->mbmem_len)  in fm10k_mbx_read_copy()
448 		head++;  in fm10k_mbx_read_copy()
458 			head &= mbx->mbmem_len - 1;  in fm10k_mbx_read_copy()
459 			if (!head)  in fm10k_mbx_read_copy()
460 				head++;  in fm10k_mbx_read_copy()
463 			*(tail++) = fm10k_read_reg(hw, mbmem + head++);  in fm10k_mbx_read_copy()
487 	u16 len, seq = fm10k_mbx_index_len(mbx, mbx->head, tail);  in fm10k_mbx_push_tail()
495 	mbx->head = fm10k_mbx_head_add(mbx, len);  in fm10k_mbx_push_tail()
628 static void fm10k_mbx_update_local_crc(struct fm10k_mbx_info *mbx, u16 head)  in fm10k_mbx_update_local_crc()  argument
630 	u16 len = mbx->tail_len - fm10k_mbx_index_len(mbx, head, mbx->tail);  in fm10k_mbx_update_local_crc()
633 	head = fm10k_fifo_head_offset(&mbx->tx, mbx->pulled);  in fm10k_mbx_update_local_crc()
636 	mbx->local = fm10k_fifo_crc(&mbx->tx, head, len, mbx->local);  in fm10k_mbx_update_local_crc()
722 		err = fm10k_tlv_msg_parse(hw, fifo->buffer + fifo->head,  in fm10k_mbx_dequeue_rx()
734 	fifo->tail -= fifo->head;  in fm10k_mbx_dequeue_rx()
735 	fifo->head = 0;  in fm10k_mbx_dequeue_rx()
852 		       FM10K_MSG_HDR_FIELD_SET(mbx->head, HEAD) |  in fm10k_mbx_create_connect_hdr()
866 		  FM10K_MSG_HDR_FIELD_SET(mbx->head, HEAD);  in fm10k_mbx_create_data_hdr()
892 		  FM10K_MSG_HDR_FIELD_SET(mbx->head, HEAD);  in fm10k_mbx_create_disconnect_hdr()
912 		  FM10K_MSG_HDR_FIELD_SET(mbx->head, TAIL) |  in fm10k_mbx_create_fake_disconnect_hdr()
950 		       FM10K_MSG_HDR_FIELD_SET(mbx->head, HEAD);  in fm10k_mbx_create_error_msg()
964 	u16 type, rsvd0, head, tail, size;  in fm10k_mbx_validate_msg_hdr()  local
970 	head = FM10K_MSG_HDR_FIELD_GET(*hdr, HEAD);  in fm10k_mbx_validate_msg_hdr()
979 		if (tail != mbx->head)  in fm10k_mbx_validate_msg_hdr()
985 		if (!head || (head == FM10K_MSG_HDR_MASK(HEAD)))  in fm10k_mbx_validate_msg_hdr()
987 		if (fm10k_mbx_index_len(mbx, head, mbx->tail) > mbx->tail_len)  in fm10k_mbx_validate_msg_hdr()
993 		if (fm10k_mbx_index_len(mbx, mbx->head, tail) < mbx->mbmem_len)  in fm10k_mbx_validate_msg_hdr()
1004 		if (!head || (head == FM10K_MSG_HDR_MASK(HEAD)))  in fm10k_mbx_validate_msg_hdr()
1029 				  struct fm10k_mbx_info *mbx, u16 head)  in fm10k_mbx_create_reply()  argument
1035 		fm10k_mbx_update_local_crc(mbx, head);  in fm10k_mbx_create_reply()
1038 		fm10k_mbx_pull_head(hw, mbx, head);  in fm10k_mbx_create_reply()
1070 	u16 len, head, ack;  in fm10k_mbx_reset_work()  local
1076 	head = FM10K_MSG_HDR_FIELD_GET(mbx->mbx_hdr, HEAD);  in fm10k_mbx_reset_work()
1077 	ack = fm10k_mbx_index_len(mbx, head, mbx->tail);  in fm10k_mbx_reset_work()
1096 	mbx->rx.head = 0;  in fm10k_mbx_reset_work()
1162 	u16 size, head;  in fm10k_mbx_process_connect()  local
1166 	head = FM10K_MSG_HDR_FIELD_GET(*hdr, HEAD);  in fm10k_mbx_process_connect()
1190 	mbx->tail = head;  in fm10k_mbx_process_connect()
1192 	return fm10k_mbx_create_reply(hw, mbx, head);  in fm10k_mbx_process_connect()
1207 	u16 head, tail;  in fm10k_mbx_process_data()  local
1211 	head = FM10K_MSG_HDR_FIELD_GET(*hdr, HEAD);  in fm10k_mbx_process_data()
1216 		mbx->tail = head;  in fm10k_mbx_process_data()
1233 	return fm10k_mbx_create_reply(hw, mbx, head);  in fm10k_mbx_process_data()
1249 	u16 head;  in fm10k_mbx_process_disconnect()  local
1253 	head = FM10K_MSG_HDR_FIELD_GET(*hdr, HEAD);  in fm10k_mbx_process_disconnect()
1275 		if (head != mbx->tail)  in fm10k_mbx_process_disconnect()
1285 	return fm10k_mbx_create_reply(hw, mbx, head);  in fm10k_mbx_process_disconnect()
1300 	u16 head;  in fm10k_mbx_process_error()  local
1303 	head = FM10K_MSG_HDR_FIELD_GET(*hdr, HEAD);  in fm10k_mbx_process_error()
1316 		mbx->tail = head;  in fm10k_mbx_process_error()
1604 	mbx->head = 1;  in fm10k_pfvf_mbx_init()
1645 		       FM10K_MSG_HDR_FIELD_SET(mbx->head, SM_HEAD);  in fm10k_sm_mbx_create_data_hdr()
1662 		       FM10K_MSG_HDR_FIELD_SET(mbx->head, SM_HEAD) |  in fm10k_sm_mbx_create_connect_hdr()
1683 	mbx->head = 1;  in fm10k_sm_mbx_connect_reset()
1784 	u16 tail, head, ver;  in fm10k_sm_mbx_validate_fifo_hdr()  local
1788 	head = FM10K_MSG_HDR_FIELD_GET(*hdr, SM_HEAD);  in fm10k_sm_mbx_validate_fifo_hdr()
1794 		if (!head || head > FM10K_SM_MBX_FIFO_LEN)  in fm10k_sm_mbx_validate_fifo_hdr()
1798 		if (mbx->tail < head)  in fm10k_sm_mbx_validate_fifo_hdr()
1799 			head += mbx->mbmem_len - 1;  in fm10k_sm_mbx_validate_fifo_hdr()
1800 		if (tail < mbx->head)  in fm10k_sm_mbx_validate_fifo_hdr()
1802 		if (fm10k_mbx_index_len(mbx, head, mbx->tail) > mbx->tail_len)  in fm10k_sm_mbx_validate_fifo_hdr()
1804 		if (fm10k_mbx_index_len(mbx, mbx->head, tail) < mbx->mbmem_len)  in fm10k_sm_mbx_validate_fifo_hdr()
1895 	if (tail < mbx->head)  in fm10k_sm_mbx_receive()
1907 	mbx->head = fm10k_mbx_head_sub(mbx, mbx->pushed);  in fm10k_sm_mbx_receive()
1911 	if (mbx->head > mbmem_len)  in fm10k_sm_mbx_receive()
1912 		mbx->head -= mbmem_len;  in fm10k_sm_mbx_receive()
1926 				  struct fm10k_mbx_info *mbx, u16 head)  in fm10k_sm_mbx_transmit()  argument
1935 	if (mbx->tail < head)  in fm10k_sm_mbx_transmit()
1936 		head += mbmem_len;  in fm10k_sm_mbx_transmit()
1938 	fm10k_mbx_pull_head(hw, mbx, head);  in fm10k_sm_mbx_transmit()
1969 				      struct fm10k_mbx_info *mbx, u16 head)  in fm10k_sm_mbx_create_reply()  argument
1975 		fm10k_sm_mbx_transmit(hw, mbx, head);  in fm10k_sm_mbx_create_reply()
2043 	u16 head, tail;  in fm10k_sm_mbx_process_version_1()  local
2048 	head = FM10K_MSG_HDR_FIELD_GET(*hdr, SM_HEAD);  in fm10k_sm_mbx_process_version_1()
2070 	fm10k_sm_mbx_create_reply(hw, mbx, head);  in fm10k_sm_mbx_process_version_1()