From: Arun Kumar Neelakantam <ane...@codeaurora.org>
With current design the transport can send packets of size upto
FIFO_SIZE which is 16k and return failure for all packets above 16k.
Add TX_DATA_CONT command to send packets greater than 16k by splitting
into 8K chunks.
Signed-off-by: Arun Kumar Neelakantam <ane...@codeaurora.org>
Signed-off-by: Deepak Kumar Singh <dee...@codeaurora.org>
---
drivers/rpmsg/qcom_glink_native.c | 38 ++++++++++++++++++++++++++++++++++----
1 file changed, 34 insertions(+), 4 deletions(-)
diff --git a/drivers/rpmsg/qcom_glink_native.c
b/drivers/rpmsg/qcom_glink_native.c
index df3c608..ac179b1 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1289,6 +1289,8 @@ static int __qcom_glink_send(struct glink_channel
*channel,
} __packed req;
int ret;
unsigned long flags;
+ int chunk_size = len;
+ int left_size = 0;
if (!glink->intentless) {
while (!intent) {
@@ -1322,18 +1324,46 @@ static int __qcom_glink_send(struct glink_channel
*channel,
iid = intent->id;
}
+ if (wait && (chunk_size > SZ_8K)) {
+ chunk_size = SZ_8K;
+ left_size = len - chunk_size;
+ }
req.msg.cmd = cpu_to_le16(RPM_CMD_TX_DATA);
req.msg.param1 = cpu_to_le16(channel->lcid);
req.msg.param2 = cpu_to_le32(iid);
- req.chunk_size = cpu_to_le32(len);
- req.left_size = cpu_to_le32(0);
+ req.chunk_size = cpu_to_le32(chunk_size);
+ req.left_size = cpu_to_le32(left_size);
- ret = qcom_glink_tx(glink, &req, sizeof(req), data, len, wait);
+ ret = qcom_glink_tx(glink, &req, sizeof(req), data, chunk_size, wait);
/* Mark intent available if we failed */
- if (ret && intent)
+ if (ret && intent) {
intent->in_use = false;
+ return ret;
+ }
+ while (left_size > 0) {
+ data = (void *)((char *)data + chunk_size);
+ chunk_size = left_size;
+ if (chunk_size > SZ_8K)
+ chunk_size = SZ_8K;
+ left_size -= chunk_size;
+
+ req.msg.cmd = cpu_to_le16(RPM_CMD_TX_DATA_CONT);
+ req.msg.param1 = cpu_to_le16(channel->lcid);
+ req.msg.param2 = cpu_to_le32(iid);
+ req.chunk_size = cpu_to_le32(chunk_size);
+ req.left_size = cpu_to_le32(left_size);
+
+ ret = qcom_glink_tx(glink, &req, sizeof(req), data,
+ chunk_size, wait);
+
+ /* Mark intent available if we failed */
+ if (ret && intent) {
+ intent->in_use = false;
+ break;
+ }
+ }
return ret;
}
--
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