* @lcids: idr of all channels with a known local channel id
* @rcids: idr of all channels with a known remote channel id
*/
-struct glink_rpm {
+struct qcom_glink {
struct device *dev;
struct mbox_client mbox_client;
* struct glink_channel - internal representation of a channel
* @rpdev: rpdev reference, only used for primary endpoints
* @ept: rpmsg endpoint this channel is associated with
- * @glink: glink_rpm context handle
+ * @glink: qcom_glink context handle
* @refcount: refcount for the channel object
* @recv_lock: guard for @ept.cb
* @name: unique channel name/identifier
struct rpmsg_endpoint ept;
struct rpmsg_device *rpdev;
- struct glink_rpm *glink;
+ struct qcom_glink *glink;
struct kref refcount;
#define GLINK_FEATURE_INTENTLESS BIT(1)
-static struct glink_channel *glink_rpm_alloc_channel(struct glink_rpm *glink,
- const char *name)
+static struct glink_channel *qcom_glink_alloc_channel(struct qcom_glink *glink,
+ const char *name)
{
struct glink_channel *channel;
return channel;
}
-static void glink_rpm_channel_release(struct kref *ref)
+static void qcom_glink_channel_release(struct kref *ref)
{
struct glink_channel *channel = container_of(ref, struct glink_channel,
refcount);
kfree(channel);
}
-static size_t glink_rpm_rx_avail(struct glink_rpm *glink)
+static size_t qcom_glink_rx_avail(struct qcom_glink *glink)
{
struct glink_rpm_pipe *pipe = &glink->rx_pipe;
unsigned int head;
return head - tail;
}
-static void glink_rpm_rx_peak(struct glink_rpm *glink,
- void *data, size_t count)
+static void qcom_glink_rx_peak(struct qcom_glink *glink,
+ void *data, size_t count)
{
struct glink_rpm_pipe *pipe = &glink->rx_pipe;
unsigned int tail;
}
}
-static void glink_rpm_rx_advance(struct glink_rpm *glink,
- size_t count)
+static void qcom_glink_rx_advance(struct qcom_glink *glink,
+ size_t count)
{
struct glink_rpm_pipe *pipe = &glink->rx_pipe;
unsigned int tail;
writel(tail, pipe->tail);
}
-static size_t glink_rpm_tx_avail(struct glink_rpm *glink)
+static size_t qcom_glink_tx_avail(struct qcom_glink *glink)
{
struct glink_rpm_pipe *pipe = &glink->tx_pipe;
unsigned int head;
return tail - head;
}
-static unsigned int glink_rpm_tx_write(struct glink_rpm *glink,
- unsigned int head,
- const void *data, size_t count)
+static unsigned int qcom_glink_tx_write(struct qcom_glink *glink,
+ unsigned int head,
+ const void *data, size_t count)
{
struct glink_rpm_pipe *pipe = &glink->tx_pipe;
size_t len;
return head;
}
-static int glink_rpm_tx(struct glink_rpm *glink,
- const void *hdr, size_t hlen,
+static int qcom_glink_tx(struct qcom_glink *glink,
+ const void *hdr, size_t hlen,
const void *data, size_t dlen, bool wait)
{
struct glink_rpm_pipe *pipe = &glink->tx_pipe;
if (ret)
return ret;
- while (glink_rpm_tx_avail(glink) < tlen) {
+ while (qcom_glink_tx_avail(glink) < tlen) {
if (!wait) {
ret = -ENOMEM;
goto out;
}
head = readl(pipe->head);
- head = glink_rpm_tx_write(glink, head, hdr, hlen);
- head = glink_rpm_tx_write(glink, head, data, dlen);
+ head = qcom_glink_tx_write(glink, head, hdr, hlen);
+ head = qcom_glink_tx_write(glink, head, data, dlen);
writel(head, pipe->head);
mbox_send_message(glink->mbox_chan, NULL);
return ret;
}
-static int glink_rpm_send_version(struct glink_rpm *glink)
+static int qcom_glink_send_version(struct qcom_glink *glink)
{
struct glink_msg msg;
msg.param1 = cpu_to_le16(1);
msg.param2 = cpu_to_le32(GLINK_FEATURE_INTENTLESS);
- return glink_rpm_tx(glink, &msg, sizeof(msg), NULL, 0, true);
+ return qcom_glink_tx(glink, &msg, sizeof(msg), NULL, 0, true);
}
-static void glink_rpm_send_version_ack(struct glink_rpm *glink)
+static void qcom_glink_send_version_ack(struct qcom_glink *glink)
{
struct glink_msg msg;
msg.param1 = cpu_to_le16(1);
msg.param2 = cpu_to_le32(0);
- glink_rpm_tx(glink, &msg, sizeof(msg), NULL, 0, true);
+ qcom_glink_tx(glink, &msg, sizeof(msg), NULL, 0, true);
}
-static void glink_rpm_send_open_ack(struct glink_rpm *glink,
- struct glink_channel *channel)
+static void qcom_glink_send_open_ack(struct qcom_glink *glink,
+ struct glink_channel *channel)
{
struct glink_msg msg;
msg.param1 = cpu_to_le16(channel->rcid);
msg.param2 = cpu_to_le32(0);
- glink_rpm_tx(glink, &msg, sizeof(msg), NULL, 0, true);
+ qcom_glink_tx(glink, &msg, sizeof(msg), NULL, 0, true);
}
/**
- * glink_rpm_send_open_req() - send a RPM_CMD_OPEN request to the remote
+ * qcom_glink_send_open_req() - send a RPM_CMD_OPEN request to the remote
* @glink:
* @channel:
*
*
* Returns 0 on success, negative errno otherwise.
*/
-static int glink_rpm_send_open_req(struct glink_rpm *glink,
- struct glink_channel *channel)
+static int qcom_glink_send_open_req(struct qcom_glink *glink,
+ struct glink_channel *channel)
{
struct {
struct glink_msg msg;
req.msg.param2 = cpu_to_le32(name_len);
strcpy(req.name, channel->name);
- ret = glink_rpm_tx(glink, &req, req_len, NULL, 0, true);
+ ret = qcom_glink_tx(glink, &req, req_len, NULL, 0, true);
if (ret)
goto remove_idr;
return ret;
}
-static void glink_rpm_send_close_req(struct glink_rpm *glink,
- struct glink_channel *channel)
+static void qcom_glink_send_close_req(struct qcom_glink *glink,
+ struct glink_channel *channel)
{
struct glink_msg req;
req.param1 = cpu_to_le16(channel->lcid);
req.param2 = 0;
- glink_rpm_tx(glink, &req, sizeof(req), NULL, 0, true);
+ qcom_glink_tx(glink, &req, sizeof(req), NULL, 0, true);
}
-static void glink_rpm_send_close_ack(struct glink_rpm *glink, unsigned int rcid)
+static void qcom_glink_send_close_ack(struct qcom_glink *glink,
+ unsigned int rcid)
{
struct glink_msg req;
req.param1 = cpu_to_le16(rcid);
req.param2 = 0;
- glink_rpm_tx(glink, &req, sizeof(req), NULL, 0, true);
+ qcom_glink_tx(glink, &req, sizeof(req), NULL, 0, true);
}
-static int glink_rpm_rx_defer(struct glink_rpm *glink, size_t extra)
+static int qcom_glink_rx_defer(struct qcom_glink *glink, size_t extra)
{
struct glink_defer_cmd *dcmd;
extra = ALIGN(extra, 8);
- if (glink_rpm_rx_avail(glink) < sizeof(struct glink_msg) + extra) {
+ if (qcom_glink_rx_avail(glink) < sizeof(struct glink_msg) + extra) {
dev_dbg(glink->dev, "Insufficient data in rx fifo");
return -ENXIO;
}
INIT_LIST_HEAD(&dcmd->node);
- glink_rpm_rx_peak(glink, &dcmd->msg, sizeof(dcmd->msg) + extra);
+ qcom_glink_rx_peak(glink, &dcmd->msg, sizeof(dcmd->msg) + extra);
spin_lock(&glink->rx_lock);
list_add_tail(&dcmd->node, &glink->rx_queue);
spin_unlock(&glink->rx_lock);
schedule_work(&glink->rx_work);
- glink_rpm_rx_advance(glink, sizeof(dcmd->msg) + extra);
+ qcom_glink_rx_advance(glink, sizeof(dcmd->msg) + extra);
return 0;
}
-static int glink_rpm_rx_data(struct glink_rpm *glink, size_t avail)
+static int qcom_glink_rx_data(struct qcom_glink *glink, size_t avail)
{
struct glink_channel *channel;
struct {
return -EAGAIN;
}
- glink_rpm_rx_peak(glink, &hdr, sizeof(hdr));
+ qcom_glink_rx_peak(glink, &hdr, sizeof(hdr));
chunk_size = le32_to_cpu(hdr.chunk_size);
left_size = le32_to_cpu(hdr.left_size);
dev_dbg(glink->dev, "Data on non-existing channel\n");
/* Drop the message */
- glink_rpm_rx_advance(glink, ALIGN(sizeof(hdr) + chunk_size, 8));
+ qcom_glink_rx_advance(glink,
+ ALIGN(sizeof(hdr) + chunk_size, 8));
return 0;
}
channel->buf_offset = 0;
}
- glink_rpm_rx_advance(glink, sizeof(hdr));
+ qcom_glink_rx_advance(glink, sizeof(hdr));
if (channel->buf_size - channel->buf_offset < chunk_size) {
dev_err(glink->dev, "Insufficient space in input buffer\n");
/* The packet header lied, drop payload */
- glink_rpm_rx_advance(glink, chunk_size);
+ qcom_glink_rx_advance(glink, chunk_size);
return -ENOMEM;
}
- glink_rpm_rx_peak(glink, channel->buf + channel->buf_offset, chunk_size);
+ qcom_glink_rx_peak(glink, channel->buf + channel->buf_offset,
+ chunk_size);
channel->buf_offset += chunk_size;
/* Handle message when no fragments remain to be received */
}
/* Each message starts at 8 byte aligned address */
- glink_rpm_rx_advance(glink, ALIGN(chunk_size, 8));
+ qcom_glink_rx_advance(glink, ALIGN(chunk_size, 8));
return 0;
}
-static int glink_rpm_rx_open_ack(struct glink_rpm *glink, unsigned int lcid)
+static int qcom_glink_rx_open_ack(struct qcom_glink *glink, unsigned int lcid)
{
struct glink_channel *channel;
return 0;
}
-static irqreturn_t glink_rpm_intr(int irq, void *data)
+static irqreturn_t qcom_glink_intr(int irq, void *data)
{
- struct glink_rpm *glink = data;
+ struct qcom_glink *glink = data;
struct glink_msg msg;
unsigned int param1;
unsigned int param2;
int ret;
for (;;) {
- avail = glink_rpm_rx_avail(glink);
+ avail = qcom_glink_rx_avail(glink);
if (avail < sizeof(msg))
break;
- glink_rpm_rx_peak(glink, &msg, sizeof(msg));
+ qcom_glink_rx_peak(glink, &msg, sizeof(msg));
cmd = le16_to_cpu(msg.cmd);
param1 = le16_to_cpu(msg.param1);
case RPM_CMD_VERSION_ACK:
case RPM_CMD_CLOSE:
case RPM_CMD_CLOSE_ACK:
- ret = glink_rpm_rx_defer(glink, 0);
+ ret = qcom_glink_rx_defer(glink, 0);
break;
case RPM_CMD_OPEN_ACK:
- ret = glink_rpm_rx_open_ack(glink, param1);
- glink_rpm_rx_advance(glink, ALIGN(sizeof(msg), 8));
+ ret = qcom_glink_rx_open_ack(glink, param1);
+ qcom_glink_rx_advance(glink, ALIGN(sizeof(msg), 8));
break;
case RPM_CMD_OPEN:
- ret = glink_rpm_rx_defer(glink, param2);
+ ret = qcom_glink_rx_defer(glink, param2);
break;
case RPM_CMD_TX_DATA:
case RPM_CMD_TX_DATA_CONT:
- ret = glink_rpm_rx_data(glink, avail);
+ ret = qcom_glink_rx_data(glink, avail);
break;
case RPM_CMD_READ_NOTIF:
- glink_rpm_rx_advance(glink, ALIGN(sizeof(msg), 8));
+ qcom_glink_rx_advance(glink, ALIGN(sizeof(msg), 8));
mbox_send_message(glink->mbox_chan, NULL);
mbox_client_txdone(glink->mbox_chan, 0);
}
/* Locally initiated rpmsg_create_ept */
-static struct glink_channel *glink_rpm_create_local(struct glink_rpm *glink,
- const char *name)
+static struct glink_channel *qcom_glink_create_local(struct qcom_glink *glink,
+ const char *name)
{
struct glink_channel *channel;
int ret;
- channel = glink_rpm_alloc_channel(glink, name);
+ channel = qcom_glink_alloc_channel(glink, name);
if (IS_ERR(channel))
return ERR_CAST(channel);
- ret = glink_rpm_send_open_req(glink, channel);
+ ret = qcom_glink_send_open_req(glink, channel);
if (ret)
goto release_channel;
if (!ret)
goto err_timeout;
- glink_rpm_send_open_ack(glink, channel);
+ qcom_glink_send_open_ack(glink, channel);
return channel;
err_timeout:
- /* glink_rpm_send_open_req() did register the channel in lcids*/
+ /* qcom_glink_send_open_req() did register the channel in lcids*/
mutex_lock(&glink->idr_lock);
idr_remove(&glink->lcids, channel->lcid);
mutex_unlock(&glink->idr_lock);
release_channel:
- /* Release glink_rpm_send_open_req() reference */
- kref_put(&channel->refcount, glink_rpm_channel_release);
- /* Release glink_rpm_alloc_channel() reference */
- kref_put(&channel->refcount, glink_rpm_channel_release);
+ /* Release qcom_glink_send_open_req() reference */
+ kref_put(&channel->refcount, qcom_glink_channel_release);
+ /* Release qcom_glink_alloc_channel() reference */
+ kref_put(&channel->refcount, qcom_glink_channel_release);
return ERR_PTR(-ETIMEDOUT);
}
/* Remote initiated rpmsg_create_ept */
-static int glink_rpm_create_remote(struct glink_rpm *glink,
- struct glink_channel *channel)
+static int qcom_glink_create_remote(struct qcom_glink *glink,
+ struct glink_channel *channel)
{
int ret;
- glink_rpm_send_open_ack(glink, channel);
+ qcom_glink_send_open_ack(glink, channel);
- ret = glink_rpm_send_open_req(glink, channel);
+ ret = qcom_glink_send_open_req(glink, channel);
if (ret)
goto close_link;
* Send a close request to "undo" our open-ack. The close-ack will
* release the last reference.
*/
- glink_rpm_send_close_req(glink, channel);
+ qcom_glink_send_close_req(glink, channel);
- /* Release glink_rpm_send_open_req() reference */
- kref_put(&channel->refcount, glink_rpm_channel_release);
+ /* Release qcom_glink_send_open_req() reference */
+ kref_put(&channel->refcount, qcom_glink_channel_release);
return ret;
}
-static struct rpmsg_endpoint *glink_rpm_create_ept(struct rpmsg_device *rpdev,
- rpmsg_rx_cb_t cb, void *priv,
- struct rpmsg_channel_info chinfo)
+static struct rpmsg_endpoint *qcom_glink_create_ept(struct rpmsg_device *rpdev,
+ rpmsg_rx_cb_t cb,
+ void *priv,
+ struct rpmsg_channel_info
+ chinfo)
{
struct glink_channel *parent = to_glink_channel(rpdev->ept);
struct glink_channel *channel;
- struct glink_rpm *glink = parent->glink;
+ struct qcom_glink *glink = parent->glink;
struct rpmsg_endpoint *ept;
const char *name = chinfo.name;
int cid;
}
if (!channel) {
- channel = glink_rpm_create_local(glink, name);
+ channel = qcom_glink_create_local(glink, name);
if (IS_ERR(channel))
return NULL;
} else {
- ret = glink_rpm_create_remote(glink, channel);
+ ret = qcom_glink_create_remote(glink, channel);
if (ret)
return NULL;
}
return ept;
}
-static void glink_rpm_destroy_ept(struct rpmsg_endpoint *ept)
+static void qcom_glink_destroy_ept(struct rpmsg_endpoint *ept)
{
struct glink_channel *channel = to_glink_channel(ept);
- struct glink_rpm *glink = channel->glink;
+ struct qcom_glink *glink = channel->glink;
unsigned long flags;
spin_lock_irqsave(&channel->recv_lock, flags);
/* Decouple the potential rpdev from the channel */
channel->rpdev = NULL;
- glink_rpm_send_close_req(glink, channel);
+ qcom_glink_send_close_req(glink, channel);
}
-static int __glink_rpm_send(struct glink_channel *channel,
+static int __qcom_glink_send(struct glink_channel *channel,
void *data, int len, bool wait)
{
- struct glink_rpm *glink = channel->glink;
+ struct qcom_glink *glink = channel->glink;
struct {
struct glink_msg msg;
__le32 chunk_size;
req.chunk_size = cpu_to_le32(len);
req.left_size = cpu_to_le32(0);
- return glink_rpm_tx(glink, &req, sizeof(req), data, len, wait);
+ return qcom_glink_tx(glink, &req, sizeof(req), data, len, wait);
}
-static int glink_rpm_send(struct rpmsg_endpoint *ept, void *data, int len)
+static int qcom_glink_send(struct rpmsg_endpoint *ept, void *data, int len)
{
struct glink_channel *channel = to_glink_channel(ept);
- return __glink_rpm_send(channel, data, len, true);
+ return __qcom_glink_send(channel, data, len, true);
}
-static int glink_rpm_trysend(struct rpmsg_endpoint *ept, void *data, int len)
+static int qcom_glink_trysend(struct rpmsg_endpoint *ept, void *data, int len)
{
struct glink_channel *channel = to_glink_channel(ept);
- return __glink_rpm_send(channel, data, len, false);
+ return __qcom_glink_send(channel, data, len, false);
}
/*
* Finds the device_node for the glink child interested in this channel.
*/
-static struct device_node *glink_rpm_match_channel(struct device_node *node,
+static struct device_node *qcom_glink_match_channel(struct device_node *node,
const char *channel)
{
struct device_node *child;
}
static const struct rpmsg_device_ops glink_device_ops = {
- .create_ept = glink_rpm_create_ept,
+ .create_ept = qcom_glink_create_ept,
};
static const struct rpmsg_endpoint_ops glink_endpoint_ops = {
- .destroy_ept = glink_rpm_destroy_ept,
- .send = glink_rpm_send,
- .trysend = glink_rpm_trysend,
+ .destroy_ept = qcom_glink_destroy_ept,
+ .send = qcom_glink_send,
+ .trysend = qcom_glink_trysend,
};
-static void glink_rpm_rpdev_release(struct device *dev)
+static void qcom_glink_rpdev_release(struct device *dev)
{
struct rpmsg_device *rpdev = to_rpmsg_device(dev);
struct glink_channel *channel = to_glink_channel(rpdev->ept);
kfree(rpdev);
}
-static int glink_rpm_rx_open(struct glink_rpm *glink, unsigned int rcid,
- char *name)
+static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid,
+ char *name)
{
struct glink_channel *channel;
struct rpmsg_device *rpdev;
bool create_device = false;
int lcid;
int ret;
+ struct device_node *node;
idr_for_each_entry(&glink->lcids, channel, lcid) {
if (!strcmp(channel->name, name))
}
if (!channel) {
- channel = glink_rpm_alloc_channel(glink, name);
+ channel = qcom_glink_alloc_channel(glink, name);
if (IS_ERR(channel))
return PTR_ERR(channel);
rpdev->dst = RPMSG_ADDR_ANY;
rpdev->ops = &glink_device_ops;
- rpdev->dev.of_node = glink_rpm_match_channel(glink->dev->of_node, name);
+ node = qcom_glink_match_channel(glink->dev->of_node, name);
+ rpdev->dev.of_node = node;
rpdev->dev.parent = glink->dev;
- rpdev->dev.release = glink_rpm_rpdev_release;
+ rpdev->dev.release = qcom_glink_rpdev_release;
ret = rpmsg_register_device(rpdev);
if (ret)
free_channel:
/* Release the reference, iff we took it */
if (create_device)
- kref_put(&channel->refcount, glink_rpm_channel_release);
+ kref_put(&channel->refcount, qcom_glink_channel_release);
return ret;
}
-static void glink_rpm_rx_close(struct glink_rpm *glink, unsigned int rcid)
+static void qcom_glink_rx_close(struct qcom_glink *glink, unsigned int rcid)
{
struct rpmsg_channel_info chinfo;
struct glink_channel *channel;
rpmsg_unregister_device(glink->dev, &chinfo);
}
- glink_rpm_send_close_ack(glink, channel->rcid);
+ qcom_glink_send_close_ack(glink, channel->rcid);
mutex_lock(&glink->idr_lock);
idr_remove(&glink->rcids, channel->rcid);
channel->rcid = 0;
mutex_unlock(&glink->idr_lock);
- kref_put(&channel->refcount, glink_rpm_channel_release);
+ kref_put(&channel->refcount, qcom_glink_channel_release);
}
-static void glink_rpm_rx_close_ack(struct glink_rpm *glink, unsigned int lcid)
+static void qcom_glink_rx_close_ack(struct qcom_glink *glink, unsigned int lcid)
{
struct glink_channel *channel;
channel->lcid = 0;
mutex_unlock(&glink->idr_lock);
- kref_put(&channel->refcount, glink_rpm_channel_release);
+ kref_put(&channel->refcount, qcom_glink_channel_release);
}
-static void glink_rpm_work(struct work_struct *work)
+static void qcom_glink_work(struct work_struct *work)
{
- struct glink_rpm *glink = container_of(work, struct glink_rpm, rx_work);
+ struct qcom_glink *glink = container_of(work, struct qcom_glink,
+ rx_work);
struct glink_defer_cmd *dcmd;
struct glink_msg *msg;
unsigned long flags;
switch (cmd) {
case RPM_CMD_VERSION:
- glink_rpm_send_version_ack(glink);
+ qcom_glink_send_version_ack(glink);
break;
case RPM_CMD_VERSION_ACK:
break;
case RPM_CMD_OPEN:
- glink_rpm_rx_open(glink, param1, msg->data);
+ qcom_glink_rx_open(glink, param1, msg->data);
break;
case RPM_CMD_CLOSE:
- glink_rpm_rx_close(glink, param1);
+ qcom_glink_rx_close(glink, param1);
break;
case RPM_CMD_CLOSE_ACK:
- glink_rpm_rx_close_ack(glink, param1);
+ qcom_glink_rx_close_ack(glink, param1);
break;
default:
WARN(1, "Unknown defer object %d\n", cmd);
static int glink_rpm_probe(struct platform_device *pdev)
{
- struct glink_rpm *glink;
+ struct qcom_glink *glink;
struct device_node *np;
void __iomem *msg_ram;
size_t msg_ram_size;
mutex_init(&glink->tx_lock);
spin_lock_init(&glink->rx_lock);
INIT_LIST_HEAD(&glink->rx_queue);
- INIT_WORK(&glink->rx_work, glink_rpm_work);
+ INIT_WORK(&glink->rx_work, qcom_glink_work);
mutex_init(&glink->idr_lock);
idr_init(&glink->lcids);
irq = platform_get_irq(pdev, 0);
ret = devm_request_irq(dev, irq,
- glink_rpm_intr,
+ qcom_glink_intr,
IRQF_NO_SUSPEND | IRQF_SHARED,
"glink-rpm", glink);
if (ret) {
glink->irq = irq;
- ret = glink_rpm_send_version(glink);
+ ret = qcom_glink_send_version(glink);
if (ret)
return ret;
static int glink_rpm_remove(struct platform_device *pdev)
{
- struct glink_rpm *glink = platform_get_drvdata(pdev);
+ struct qcom_glink *glink = platform_get_drvdata(pdev);
struct glink_channel *channel;
int cid;
int ret;
/* Release any defunct local channels, waiting for close-ack */
idr_for_each_entry(&glink->lcids, channel, cid)
- kref_put(&channel->refcount, glink_rpm_channel_release);
+ kref_put(&channel->refcount, qcom_glink_channel_release);
idr_destroy(&glink->lcids);
idr_destroy(&glink->rcids);
projects / platform / kernel / linux-rpi.git / commitdiff