From: Deepak Kumar Singh <deesin@codeaurora.org>
To: bjorn.andersson@linaro.org, clew@codeaurora.org
Cc: mathieu.poirier@linaro.org, linux-arm-msm@vger.kernel.org,
linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
Arun Kumar Neelakantam <aneela@codeaurora.org>,
Deepak Kumar Singh <deesin@codeaurora.org>
Subject: [PATCH V1 3/6] rpmsg: glink: Add TX_DATA_CONT command while sending
Date: Thu, 30 Jul 2020 10:48:13 +0530 [thread overview]
Message-ID: <1596086296-28529-4-git-send-email-deesin@codeaurora.org> (raw)
In-Reply-To: <1596086296-28529-1-git-send-email-deesin@codeaurora.org>
From: Arun Kumar Neelakantam <aneela@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 <aneela@codeaurora.org>
Signed-off-by: Deepak Kumar Singh <deesin@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;
}
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2020-07-30 5:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 5:18 [PATCH V1 0/6] Glink native fixes upstreaming Deepak Kumar Singh
2020-07-30 5:18 ` [PATCH V1 1/6] rpmsg: glink: fix destroy channel endpoint logic Deepak Kumar Singh
2021-10-15 14:47 ` Bjorn Andersson
2020-07-30 5:18 ` [PATCH V1 2/6] rpmsg: glink: Deny intent request if reusable intent fits Deepak Kumar Singh
2021-10-15 15:14 ` Bjorn Andersson
2020-07-30 5:18 ` Deepak Kumar Singh [this message]
2021-10-15 17:22 ` (subset) [PATCH V1 3/6] rpmsg: glink: Add TX_DATA_CONT command while sending Bjorn Andersson
2020-07-30 5:18 ` [PATCH V1 4/6] rpmsg: glink: Remove the rpmsg dev in close_ack Deepak Kumar Singh
2021-10-15 17:22 ` (subset) " Bjorn Andersson
2020-07-30 5:18 ` [PATCH V1 5/6] rpmsg: glink: Remove channel decouple from rpdev release Deepak Kumar Singh
2021-10-15 17:22 ` (subset) " Bjorn Andersson
2020-07-30 5:18 ` [PATCH V1 6/6] rpmsg: glink: Send READ_NOTIFY command in FIFO full case Deepak Kumar Singh
2021-10-15 17:22 ` (subset) " Bjorn Andersson
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