52 	u32 headptr, tailptr;  in retrieve_msg_frame()  local
54 	tailptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL));  in retrieve_msg_frame()
57 	if (tailptr == headptr)  in retrieve_msg_frame()
60 	if (tailptr < MSG_OUTBOUND_POST_STACK)  in retrieve_msg_frame()
62 	if (tailptr >= MSG_OUTBOUND_POST_STACK + MSG_BOUND_STACK_SIZE)  in retrieve_msg_frame()
65 	*msg_frame = readl_be(MIXART_MEM(mgr, tailptr));  in retrieve_msg_frame()
68 	tailptr += 4;  in retrieve_msg_frame()
69 	if( tailptr >= (MSG_OUTBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) )  in retrieve_msg_frame()
70 		tailptr = MSG_OUTBOUND_POST_STACK;  in retrieve_msg_frame()
71 	writel_be(tailptr, MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL));  in retrieve_msg_frame()
148 	u32 headptr, tailptr;  in send_msg()  local
156 	tailptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL));  in send_msg()
159 	if (tailptr == headptr) {  in send_msg()
164 …if( (tailptr < MSG_INBOUND_FREE_STACK) || (tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE…  in send_msg()
168 	msg_frame_address = readl_be(MIXART_MEM(mgr, tailptr));  in send_msg()
169 	writel(0, MIXART_MEM(mgr, tailptr)); /* set address to zero on this fifo position */  in send_msg()
172 	tailptr += 4;  in send_msg()
173 	if( tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) )  in send_msg()
174 		tailptr = MSG_INBOUND_FREE_STACK;  in send_msg()
176 	writel_be(tailptr, MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL));  in send_msg()