51 	struct glink_smem_pipe *pipe = to_smem_pipe(np);  in glink_smem_rx_avail()  local
57 	if (!pipe->fifo) {  in glink_smem_rx_avail()
58 		fifo = qcom_smem_get(pipe->remote_pid,  in glink_smem_rx_avail()
66 		pipe->fifo = fifo;  in glink_smem_rx_avail()
67 		pipe->native.length = len;  in glink_smem_rx_avail()
70 	head = le32_to_cpu(*pipe->head);  in glink_smem_rx_avail()
71 	tail = le32_to_cpu(*pipe->tail);  in glink_smem_rx_avail()
74 		return pipe->native.length - tail + head;  in glink_smem_rx_avail()
82 	struct glink_smem_pipe *pipe = to_smem_pipe(np);  in glink_smem_rx_peak()  local
86 	tail = le32_to_cpu(*pipe->tail);  in glink_smem_rx_peak()
88 	if (tail >= pipe->native.length)  in glink_smem_rx_peak()
89 		tail -= pipe->native.length;  in glink_smem_rx_peak()
91 	len = min_t(size_t, count, pipe->native.length - tail);  in glink_smem_rx_peak()
93 		memcpy_fromio(data, pipe->fifo + tail, len);  in glink_smem_rx_peak()
96 		memcpy_fromio(data + len, pipe->fifo, (count - len));  in glink_smem_rx_peak()
102 	struct glink_smem_pipe *pipe = to_smem_pipe(np);  in glink_smem_rx_advance()  local
105 	tail = le32_to_cpu(*pipe->tail);  in glink_smem_rx_advance()
108 	if (tail > pipe->native.length)  in glink_smem_rx_advance()
109 		tail -= pipe->native.length;  in glink_smem_rx_advance()
111 	*pipe->tail = cpu_to_le32(tail);  in glink_smem_rx_advance()
116 	struct glink_smem_pipe *pipe = to_smem_pipe(np);  in glink_smem_tx_avail()  local
121 	head = le32_to_cpu(*pipe->head);  in glink_smem_tx_avail()
122 	tail = le32_to_cpu(*pipe->tail);  in glink_smem_tx_avail()
125 		avail = pipe->native.length - head + tail;  in glink_smem_tx_avail()
137 static unsigned int glink_smem_tx_write_one(struct glink_smem_pipe *pipe,  in glink_smem_tx_write_one()  argument
143 	len = min_t(size_t, count, pipe->native.length - head);  in glink_smem_tx_write_one()
145 		memcpy(pipe->fifo + head, data, len);  in glink_smem_tx_write_one()
148 		memcpy(pipe->fifo, data + len, count - len);  in glink_smem_tx_write_one()
151 	if (head >= pipe->native.length)  in glink_smem_tx_write_one()
152 		head -= pipe->native.length;  in glink_smem_tx_write_one()
161 	struct glink_smem_pipe *pipe = to_smem_pipe(glink_pipe);  in glink_smem_tx_write()  local
164 	head = le32_to_cpu(*pipe->head);  in glink_smem_tx_write()
166 	head = glink_smem_tx_write_one(pipe, head, hdr, hlen);  in glink_smem_tx_write()
167 	head = glink_smem_tx_write_one(pipe, head, data, dlen);  in glink_smem_tx_write()
171 	if (head >= pipe->native.length)  in glink_smem_tx_write()
172 		head -= pipe->native.length;  in glink_smem_tx_write()
177 	*pipe->head = cpu_to_le32(head);  in glink_smem_tx_write()