diff options
| author | Sricharan R <sricharan@codeaurora.org> | 2017-08-24 09:21:40 +0200 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2017-08-30 05:34:15 +0200 |
| commit | 11cb45a7f8c7a09d14a02754f96fa97938a5a1bb (patch) | |
| tree | bbc76e3306d03a885c460ab8f3613212d9c62aed /drivers/rpmsg | |
| parent | rpmsg: glink: Receive and store the remote intent buffers (diff) | |
| download | linux-11cb45a7f8c7a09d14a02754f96fa97938a5a1bb.tar.xz linux-11cb45a7f8c7a09d14a02754f96fa97938a5a1bb.zip | |
rpmsg: glink: Use the intents passed by remote
While sending data, use the remote intent id buffer of suitable size
that was passed by remote previously.
Acked-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/rpmsg')
| -rw-r--r-- | drivers/rpmsg/qcom_glink_native.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index 91ccbbd5417a..8592e7b15a2c 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -1110,19 +1110,50 @@ static int __qcom_glink_send(struct glink_channel *channel, void *data, int len, bool wait) { struct qcom_glink *glink = channel->glink; + struct glink_core_rx_intent *intent = NULL; + struct glink_core_rx_intent *tmp; + int iid = 0; struct { struct glink_msg msg; __le32 chunk_size; __le32 left_size; } __packed req; + int ret; + unsigned long flags; + + if (!glink->intentless) { + if (!intent) { + spin_lock_irqsave(&channel->intent_lock, flags); + idr_for_each_entry(&channel->riids, tmp, iid) { + if (tmp->size >= len && !tmp->in_use) { + tmp->in_use = true; + intent = tmp; + break; + } + } + spin_unlock_irqrestore(&channel->intent_lock, flags); + + /* We found an available intent */ + if (!intent) + return -EBUSY; + } + + iid = intent->id; + } req.msg.cmd = cpu_to_le16(RPM_CMD_TX_DATA); req.msg.param1 = cpu_to_le16(channel->lcid); - req.msg.param2 = cpu_to_le32(channel->rcid); + req.msg.param2 = cpu_to_le32(iid); req.chunk_size = cpu_to_le32(len); req.left_size = cpu_to_le32(0); - return qcom_glink_tx(glink, &req, sizeof(req), data, len, wait); + ret = qcom_glink_tx(glink, &req, sizeof(req), data, len, wait); + + /* Mark intent available if we failed */ + if (ret) + intent->in_use = false; + + return ret; } static int qcom_glink_send(struct rpmsg_endpoint *ept, void *data, int len) |