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rpmsg: virtio: Move from virtio to rpmsg byte conversion 

Use rpmsg byte conversion functions in order for the RPMSG
headers and generic functions to be used by external entities.

Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20201120214245.172963-3-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Mathieu Poirier 2020-11-20 14:42:39 -07:00 committed by Bjorn Andersson
parent 6bef038011
commit 5f2f6b7db1
1 changed files with 28 additions and 25 deletions
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53
drivers/rpmsg/virtio_rpmsg_bus.c
View File

@ -19,11 +19,11 @@
#include <linux/mutex.h>
#include <linux/of_device.h>
#include <linux/rpmsg.h>
#include <linux/rpmsg/byteorder.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/virtio.h>
#include <linux/virtio_byteorder.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
#include <linux/wait.h>
@ -85,11 +85,11 @@ struct virtproc_info {
* Every message sent(/received) on the rpmsg bus begins with this header.
*/
struct rpmsg_hdr {
__virtio32 src;
__virtio32 dst;
__virtio32 reserved;
__virtio16 len;
__virtio16 flags;
__rpmsg32 src;
__rpmsg32 dst;
__rpmsg32 reserved;
__rpmsg16 len;
__rpmsg16 flags;
u8 data[];
} __packed;
@ -107,8 +107,8 @@ struct rpmsg_hdr {
*/
struct rpmsg_ns_msg {
char name[RPMSG_NAME_SIZE];
__virtio32 addr;
__virtio32 flags;
__rpmsg32 addr;
__rpmsg32 flags;
} __packed;
/**
@ -341,8 +341,8 @@ static int virtio_rpmsg_announce_create(struct rpmsg_device *rpdev)
struct rpmsg_ns_msg nsm;
strncpy(nsm.name, rpdev->id.name, RPMSG_NAME_SIZE);
nsm.addr = cpu_to_virtio32(vrp->vdev, rpdev->ept->addr);
nsm.flags = cpu_to_virtio32(vrp->vdev, RPMSG_NS_CREATE);
nsm.addr = cpu_to_rpmsg32(rpdev, rpdev->ept->addr);
nsm.flags = cpu_to_rpmsg32(rpdev, RPMSG_NS_CREATE);
err = rpmsg_sendto(rpdev->ept, &nsm, sizeof(nsm), RPMSG_NS_ADDR);
if (err)
@ -365,8 +365,8 @@ static int virtio_rpmsg_announce_destroy(struct rpmsg_device *rpdev)
struct rpmsg_ns_msg nsm;
strncpy(nsm.name, rpdev->id.name, RPMSG_NAME_SIZE);
nsm.addr = cpu_to_virtio32(vrp->vdev, rpdev->ept->addr);
nsm.flags = cpu_to_virtio32(vrp->vdev, RPMSG_NS_DESTROY);
nsm.addr = cpu_to_rpmsg32(rpdev, rpdev->ept->addr);
nsm.flags = cpu_to_rpmsg32(rpdev, RPMSG_NS_DESTROY);
err = rpmsg_sendto(rpdev->ept, &nsm, sizeof(nsm), RPMSG_NS_ADDR);
if (err)
@ -425,6 +425,7 @@ static struct rpmsg_device *rpmsg_create_channel(struct virtproc_info *vrp,
rpdev->src = chinfo->src;
rpdev->dst = chinfo->dst;
rpdev->ops = &virtio_rpmsg_ops;
rpdev->little_endian = virtio_is_little_endian(vrp->vdev);
/*
* rpmsg server channels has predefined local address (for now),
@ -618,10 +619,10 @@ static int rpmsg_send_offchannel_raw(struct rpmsg_device *rpdev,
}
}
msg->len = cpu_to_virtio16(vrp->vdev, len);
msg->len = cpu_to_rpmsg16(rpdev, len);
msg->flags = 0;
msg->src = cpu_to_virtio32(vrp->vdev, src);
msg->dst = cpu_to_virtio32(vrp->vdev, dst);
msg->src = cpu_to_rpmsg32(rpdev, src);
msg->dst = cpu_to_rpmsg32(rpdev, dst);
msg->reserved = 0;
memcpy(msg->data, data, len);
@ -710,14 +711,15 @@ static int rpmsg_recv_single(struct virtproc_info *vrp, struct device *dev,
{
struct rpmsg_endpoint *ept;
struct scatterlist sg;
unsigned int msg_len = virtio16_to_cpu(vrp->vdev, msg->len);
bool little_endian = virtio_is_little_endian(vrp->vdev);
unsigned int msg_len = __rpmsg16_to_cpu(little_endian, msg->len);
int err;
dev_dbg(dev, "From: 0x%x, To: 0x%x, Len: %d, Flags: %d, Reserved: %d\n",
virtio32_to_cpu(vrp->vdev, msg->src),
virtio32_to_cpu(vrp->vdev, msg->dst), msg_len,
virtio16_to_cpu(vrp->vdev, msg->flags),
virtio32_to_cpu(vrp->vdev, msg->reserved));
__rpmsg32_to_cpu(little_endian, msg->src),
__rpmsg32_to_cpu(little_endian, msg->dst), msg_len,
__rpmsg16_to_cpu(little_endian, msg->flags),
__rpmsg32_to_cpu(little_endian, msg->reserved));
#if defined(CONFIG_DYNAMIC_DEBUG)
dynamic_hex_dump("rpmsg_virtio RX: ", DUMP_PREFIX_NONE, 16, 1,
msg, sizeof(*msg) + msg_len, true);
@ -736,7 +738,7 @@ static int rpmsg_recv_single(struct virtproc_info *vrp, struct device *dev,
/* use the dst addr to fetch the callback of the appropriate user */
mutex_lock(&vrp->endpoints_lock);
ept = idr_find(&vrp->endpoints, virtio32_to_cpu(vrp->vdev, msg->dst));
ept = idr_find(&vrp->endpoints, __rpmsg32_to_cpu(little_endian, msg->dst));
/* let's make sure no one deallocates ept while we use it */
if (ept)
@ -750,7 +752,7 @@ static int rpmsg_recv_single(struct virtproc_info *vrp, struct device *dev,
if (ept->cb)
ept->cb(ept->rpdev, msg->data, msg_len, ept->priv,
virtio32_to_cpu(vrp->vdev, msg->src));
__rpmsg32_to_cpu(little_endian, msg->src));
mutex_unlock(&ept->cb_lock);
@ -830,6 +832,7 @@ static int rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len,
struct rpmsg_channel_info chinfo;
struct virtproc_info *vrp = priv;
struct device *dev = &vrp->vdev->dev;
bool little_endian = virtio_is_little_endian(vrp->vdev);
int ret;
#if defined(CONFIG_DYNAMIC_DEBUG)
@ -858,13 +861,13 @@ static int rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len,
strncpy(chinfo.name, msg->name, sizeof(chinfo.name));
chinfo.src = RPMSG_ADDR_ANY;
chinfo.dst = virtio32_to_cpu(vrp->vdev, msg->addr);
chinfo.dst = __rpmsg32_to_cpu(little_endian, msg->addr);
dev_info(dev, "%sing channel %s addr 0x%x\n",
virtio32_to_cpu(vrp->vdev, msg->flags) & RPMSG_NS_DESTROY ?
__rpmsg32_to_cpu(little_endian, msg->flags) & RPMSG_NS_DESTROY ?
"destroy" : "creat", msg->name, chinfo.dst);
if (virtio32_to_cpu(vrp->vdev, msg->flags) & RPMSG_NS_DESTROY) {
if (__rpmsg32_to_cpu(little_endian, msg->flags) & RPMSG_NS_DESTROY) {
ret = rpmsg_unregister_device(&vrp->vdev->dev, &chinfo);
if (ret)
dev_err(dev, "rpmsg_destroy_channel failed: %d\n", ret);