ti: k3: drivers: ti_sci: Cleanup sequence ID usage
The sequence ID can be set with a message to identify it when it is
responded to in the response queue. We assign each message a number and
check for this same number to detect response mismatches.
Start this at 0 and increase it by one for each message sent, even ones
that do not request or wait for a response as one may still be delivered
in some cases and we want to detect this.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Change-Id: I72b4d1ef98bf1c1409d9db9db074af8dfbcd83ea
diff --git a/plat/ti/k3/common/drivers/ti_sci/ti_sci.c b/plat/ti/k3/common/drivers/ti_sci/ti_sci.c
index df0b794..a376e6e 100644
--- a/plat/ti/k3/common/drivers/ti_sci/ti_sci.c
+++ b/plat/ti/k3/common/drivers/ti_sci/ti_sci.c
@@ -45,7 +45,6 @@
.host_id = TI_SCI_HOST_ID,
.max_msg_size = TI_SCI_MAX_MESSAGE_SIZE,
},
- .seq = 0x0a,
};
/**
@@ -89,10 +88,8 @@
tx_message_size < sizeof(*hdr))
return -ERANGE;
- info.seq++;
-
hdr = (struct ti_sci_msg_hdr *)tx_buf;
- hdr->seq = info.seq;
+ hdr->seq = ++info.seq;
hdr->type = msg_type;
hdr->host = info.desc.host_id;
hdr->flags = msg_flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED;
@@ -425,7 +422,7 @@
return -ERANGE;
hdr = (struct ti_sci_msg_hdr *)&req;
- hdr->seq = info.seq;
+ hdr->seq = ++info.seq;
hdr->type = TI_SCI_MSG_SET_DEVICE_STATE;
hdr->host = info.desc.host_id;
/* Setup with NORESPONSE flag to keep response queue clean */
@@ -1408,7 +1405,7 @@
return -ERANGE;
hdr = (struct ti_sci_msg_hdr *)&req;
- hdr->seq = info.seq;
+ hdr->seq = ++info.seq;
hdr->type = TISCI_MSG_SET_PROC_BOOT_CTRL;
hdr->host = info.desc.host_id;
/* Setup with NORESPONSE flag to keep response queue clean */
@@ -1650,7 +1647,7 @@
return -ERANGE;
hdr = (struct ti_sci_msg_hdr *)&req;
- hdr->seq = info.seq;
+ hdr->seq = ++info.seq;
hdr->type = TISCI_MSG_WAIT_PROC_BOOT_STATUS;
hdr->host = info.desc.host_id;
/* Setup with NORESPONSE flag to keep response queue clean */