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authorBjorn Andersson <bjorn.andersson@linaro.org>2017-08-24 12:51:36 +0530
committerBjorn Andersson <bjorn.andersson@linaro.org>2017-08-29 20:34:13 -0700
commitb88eee975a26b1542c9da91571f79c110c108dd1 (patch)
tree024182d504531d4628e2e3665558738c53a2b9ee /drivers/rpmsg/qcom_glink_native.c
parent64f95f87920da673d84396ff1253be2098751e38 (diff)
downloadlinux-b88eee975a26b1542c9da91571f79c110c108dd1.tar.gz
rpmsg: glink: Make RX FIFO peak accessor to take an offset
To fully read the received rx data from FIFO both the command and data has to be read. Currently we read command, data separately and process them. By adding an offset parameter to RX FIFO peak accessor, command and data can be read together, simplifying things. So introduce this. 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/qcom_glink_native.c')
-rw-r--r--drivers/rpmsg/qcom_glink_native.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 5dccbf18046e..6d9985b719f9 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -233,9 +233,9 @@ static size_t qcom_glink_rx_avail(struct qcom_glink *glink)
}
static void qcom_glink_rx_peak(struct qcom_glink *glink,
- void *data, size_t count)
+ void *data, unsigned int offset, size_t count)
{
- glink->rx_pipe->peak(glink->rx_pipe, data, count);
+ glink->rx_pipe->peak(glink->rx_pipe, data, offset, count);
}
static void qcom_glink_rx_advance(struct qcom_glink *glink, size_t count)
@@ -600,7 +600,7 @@ static int qcom_glink_rx_defer(struct qcom_glink *glink, size_t extra)
INIT_LIST_HEAD(&dcmd->node);
- qcom_glink_rx_peak(glink, &dcmd->msg, sizeof(dcmd->msg) + extra);
+ qcom_glink_rx_peak(glink, &dcmd->msg, 0, sizeof(dcmd->msg) + extra);
spin_lock(&glink->rx_lock);
list_add_tail(&dcmd->node, &glink->rx_queue);
@@ -633,7 +633,7 @@ static int qcom_glink_rx_data(struct qcom_glink *glink, size_t avail)
return -EAGAIN;
}
- qcom_glink_rx_peak(glink, &hdr, sizeof(hdr));
+ qcom_glink_rx_peak(glink, &hdr, 0, sizeof(hdr));
chunk_size = le32_to_cpu(hdr.chunk_size);
left_size = le32_to_cpu(hdr.left_size);
@@ -700,9 +700,8 @@ static int qcom_glink_rx_data(struct qcom_glink *glink, size_t avail)
goto advance_rx;
}
- qcom_glink_rx_advance(glink, ALIGN(sizeof(hdr), 8));
qcom_glink_rx_peak(glink, intent->data + intent->offset,
- chunk_size);
+ sizeof(hdr), chunk_size);
intent->offset += chunk_size;
/* Handle message when no fragments remain to be received */
@@ -722,7 +721,7 @@ static int qcom_glink_rx_data(struct qcom_glink *glink, size_t avail)
}
advance_rx:
- qcom_glink_rx_advance(glink, ALIGN(chunk_size, 8));
+ qcom_glink_rx_advance(glink, ALIGN(sizeof(hdr) + chunk_size, 8));
return ret;
}
@@ -759,7 +758,7 @@ static irqreturn_t qcom_glink_native_intr(int irq, void *data)
if (avail < sizeof(msg))
break;
- qcom_glink_rx_peak(glink, &msg, sizeof(msg));
+ qcom_glink_rx_peak(glink, &msg, 0, sizeof(msg));
cmd = le16_to_cpu(msg.cmd);
param1 = le16_to_cpu(msg.param1);