summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/remoteproc/qcom_common.h3
-rw-r--r--drivers/rpmsg/qcom_glink_native.c208
-rw-r--r--drivers/rpmsg/qcom_glink_native.h8
-rw-r--r--drivers/rpmsg/qcom_glink_rpm.c96
-rw-r--r--drivers/rpmsg/qcom_glink_smem.c102
-rw-r--r--drivers/rpmsg/qcom_glink_ssr.c2
-rw-r--r--drivers/rpmsg/rpmsg_char.c8
-rw-r--r--drivers/rpmsg/rpmsg_ctrl.c2
8 files changed, 283 insertions, 146 deletions
diff --git a/drivers/remoteproc/qcom_common.h b/drivers/remoteproc/qcom_common.h
index c35adf730be0..2747c7d9ba44 100644
--- a/drivers/remoteproc/qcom_common.h
+++ b/drivers/remoteproc/qcom_common.h
@@ -6,6 +6,7 @@
#include "remoteproc_internal.h"
#include <linux/soc/qcom/qmi.h>
+struct qcom_glink_smem;
struct qcom_sysmon;
struct qcom_rproc_glink {
@@ -15,7 +16,7 @@ struct qcom_rproc_glink {
struct device *dev;
struct device_node *node;
- struct qcom_glink *edge;
+ struct qcom_glink_smem *edge;
};
struct qcom_rproc_subdev {
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 115c0a1eddb1..01d2805fe30f 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -11,7 +11,6 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
-#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/rpmsg.h>
@@ -78,11 +77,8 @@ struct glink_core_rx_intent {
/**
* struct qcom_glink - driver context, relates to one remote subsystem
* @dev: reference to the associated struct device
- * @mbox_client: mailbox client
- * @mbox_chan: mailbox channel
* @rx_pipe: pipe object for receive FIFO
* @tx_pipe: pipe object for transmit FIFO
- * @irq: IRQ for signaling incoming events
* @rx_work: worker for handling received control messages
* @rx_lock: protects the @rx_queue
* @rx_queue: queue of received control messages to be processed in @rx_work
@@ -94,18 +90,14 @@ struct glink_core_rx_intent {
* @intentless: flag to indicate that there is no intent
* @tx_avail_notify: Waitqueue for pending tx tasks
* @sent_read_notify: flag to check cmd sent or not
+ * @abort_tx: flag indicating that all tx attempts should fail
*/
struct qcom_glink {
struct device *dev;
- struct mbox_client mbox_client;
- struct mbox_chan *mbox_chan;
-
struct qcom_glink_pipe *rx_pipe;
struct qcom_glink_pipe *tx_pipe;
- int irq;
-
struct work_struct rx_work;
spinlock_t rx_lock;
struct list_head rx_queue;
@@ -120,6 +112,8 @@ struct qcom_glink {
bool intentless;
wait_queue_head_t tx_avail_notify;
bool sent_read_notify;
+
+ bool abort_tx;
};
enum {
@@ -189,20 +183,20 @@ struct glink_channel {
static const struct rpmsg_endpoint_ops glink_endpoint_ops;
-#define RPM_CMD_VERSION 0
-#define RPM_CMD_VERSION_ACK 1
-#define RPM_CMD_OPEN 2
-#define RPM_CMD_CLOSE 3
-#define RPM_CMD_OPEN_ACK 4
-#define RPM_CMD_INTENT 5
-#define RPM_CMD_RX_DONE 6
-#define RPM_CMD_RX_INTENT_REQ 7
-#define RPM_CMD_RX_INTENT_REQ_ACK 8
-#define RPM_CMD_TX_DATA 9
-#define RPM_CMD_CLOSE_ACK 11
-#define RPM_CMD_TX_DATA_CONT 12
-#define RPM_CMD_READ_NOTIF 13
-#define RPM_CMD_RX_DONE_W_REUSE 14
+#define GLINK_CMD_VERSION 0
+#define GLINK_CMD_VERSION_ACK 1
+#define GLINK_CMD_OPEN 2
+#define GLINK_CMD_CLOSE 3
+#define GLINK_CMD_OPEN_ACK 4
+#define GLINK_CMD_INTENT 5
+#define GLINK_CMD_RX_DONE 6
+#define GLINK_CMD_RX_INTENT_REQ 7
+#define GLINK_CMD_RX_INTENT_REQ_ACK 8
+#define GLINK_CMD_TX_DATA 9
+#define GLINK_CMD_CLOSE_ACK 11
+#define GLINK_CMD_TX_DATA_CONT 12
+#define GLINK_CMD_READ_NOTIF 13
+#define GLINK_CMD_RX_DONE_W_REUSE 14
#define GLINK_FEATURE_INTENTLESS BIT(1)
@@ -280,10 +274,10 @@ static size_t qcom_glink_rx_avail(struct qcom_glink *glink)
return glink->rx_pipe->avail(glink->rx_pipe);
}
-static void qcom_glink_rx_peak(struct qcom_glink *glink,
+static void qcom_glink_rx_peek(struct qcom_glink *glink,
void *data, unsigned int offset, size_t count)
{
- glink->rx_pipe->peak(glink->rx_pipe, data, offset, count);
+ glink->rx_pipe->peek(glink->rx_pipe, data, offset, count);
}
static void qcom_glink_rx_advance(struct qcom_glink *glink, size_t count)
@@ -303,18 +297,22 @@ static void qcom_glink_tx_write(struct qcom_glink *glink,
glink->tx_pipe->write(glink->tx_pipe, hdr, hlen, data, dlen);
}
+static void qcom_glink_tx_kick(struct qcom_glink *glink)
+{
+ glink->tx_pipe->kick(glink->tx_pipe);
+}
+
static void qcom_glink_send_read_notify(struct qcom_glink *glink)
{
struct glink_msg msg;
- msg.cmd = cpu_to_le16(RPM_CMD_READ_NOTIF);
+ msg.cmd = cpu_to_le16(GLINK_CMD_READ_NOTIF);
msg.param1 = 0;
msg.param2 = 0;
qcom_glink_tx_write(glink, &msg, sizeof(msg), NULL, 0);
- mbox_send_message(glink->mbox_chan, NULL);
- mbox_client_txdone(glink->mbox_chan, 0);
+ qcom_glink_tx_kick(glink);
}
static int qcom_glink_tx(struct qcom_glink *glink,
@@ -331,12 +329,22 @@ static int qcom_glink_tx(struct qcom_glink *glink,
spin_lock_irqsave(&glink->tx_lock, flags);
+ if (glink->abort_tx) {
+ ret = -EIO;
+ goto out;
+ }
+
while (qcom_glink_tx_avail(glink) < tlen) {
if (!wait) {
ret = -EAGAIN;
goto out;
}
+ if (glink->abort_tx) {
+ ret = -EIO;
+ goto out;
+ }
+
if (!glink->sent_read_notify) {
glink->sent_read_notify = true;
qcom_glink_send_read_notify(glink);
@@ -355,9 +363,7 @@ static int qcom_glink_tx(struct qcom_glink *glink,
}
qcom_glink_tx_write(glink, hdr, hlen, data, dlen);
-
- mbox_send_message(glink->mbox_chan, NULL);
- mbox_client_txdone(glink->mbox_chan, 0);
+ qcom_glink_tx_kick(glink);
out:
spin_unlock_irqrestore(&glink->tx_lock, flags);
@@ -369,7 +375,7 @@ static int qcom_glink_send_version(struct qcom_glink *glink)
{
struct glink_msg msg;
- msg.cmd = cpu_to_le16(RPM_CMD_VERSION);
+ msg.cmd = cpu_to_le16(GLINK_CMD_VERSION);
msg.param1 = cpu_to_le16(GLINK_VERSION_1);
msg.param2 = cpu_to_le32(glink->features);
@@ -380,7 +386,7 @@ static void qcom_glink_send_version_ack(struct qcom_glink *glink)
{
struct glink_msg msg;
- msg.cmd = cpu_to_le16(RPM_CMD_VERSION_ACK);
+ msg.cmd = cpu_to_le16(GLINK_CMD_VERSION_ACK);
msg.param1 = cpu_to_le16(GLINK_VERSION_1);
msg.param2 = cpu_to_le32(glink->features);
@@ -392,7 +398,7 @@ static void qcom_glink_send_open_ack(struct qcom_glink *glink,
{
struct glink_msg msg;
- msg.cmd = cpu_to_le16(RPM_CMD_OPEN_ACK);
+ msg.cmd = cpu_to_le16(GLINK_CMD_OPEN_ACK);
msg.param1 = cpu_to_le16(channel->rcid);
msg.param2 = cpu_to_le32(0);
@@ -417,12 +423,18 @@ static void qcom_glink_handle_intent_req_ack(struct qcom_glink *glink,
complete(&channel->intent_req_comp);
}
+static void qcom_glink_intent_req_abort(struct glink_channel *channel)
+{
+ channel->intent_req_result = 0;
+ complete(&channel->intent_req_comp);
+}
+
/**
- * qcom_glink_send_open_req() - send a RPM_CMD_OPEN request to the remote
+ * qcom_glink_send_open_req() - send a GLINK_CMD_OPEN request to the remote
* @glink: Ptr to the glink edge
* @channel: Ptr to the channel that the open req is sent
*
- * Allocates a local channel id and sends a RPM_CMD_OPEN message to the remote.
+ * Allocates a local channel id and sends a GLINK_CMD_OPEN message to the remote.
* Will return with refcount held, regardless of outcome.
*
* Return: 0 on success, negative errno otherwise.
@@ -451,7 +463,7 @@ static int qcom_glink_send_open_req(struct qcom_glink *glink,
channel->lcid = ret;
- req.msg.cmd = cpu_to_le16(RPM_CMD_OPEN);
+ req.msg.cmd = cpu_to_le16(GLINK_CMD_OPEN);
req.msg.param1 = cpu_to_le16(channel->lcid);
req.msg.param2 = cpu_to_le32(name_len);
strcpy(req.name, channel->name);
@@ -476,7 +488,7 @@ static void qcom_glink_send_close_req(struct qcom_glink *glink,
{
struct glink_msg req;
- req.cmd = cpu_to_le16(RPM_CMD_CLOSE);
+ req.cmd = cpu_to_le16(GLINK_CMD_CLOSE);
req.param1 = cpu_to_le16(channel->lcid);
req.param2 = 0;
@@ -488,7 +500,7 @@ static void qcom_glink_send_close_ack(struct qcom_glink *glink,
{
struct glink_msg req;
- req.cmd = cpu_to_le16(RPM_CMD_CLOSE_ACK);
+ req.cmd = cpu_to_le16(GLINK_CMD_CLOSE_ACK);
req.param1 = cpu_to_le16(rcid);
req.param2 = 0;
@@ -519,7 +531,7 @@ static void qcom_glink_rx_done_work(struct work_struct *work)
iid = intent->id;
reuse = intent->reuse;
- cmd.id = reuse ? RPM_CMD_RX_DONE_W_REUSE : RPM_CMD_RX_DONE;
+ cmd.id = reuse ? GLINK_CMD_RX_DONE_W_REUSE : GLINK_CMD_RX_DONE;
cmd.lcid = cid;
cmd.liid = iid;
@@ -631,7 +643,7 @@ static int qcom_glink_send_intent_req_ack(struct qcom_glink *glink,
{
struct glink_msg msg;
- msg.cmd = cpu_to_le16(RPM_CMD_RX_INTENT_REQ_ACK);
+ msg.cmd = cpu_to_le16(GLINK_CMD_RX_INTENT_REQ_ACK);
msg.param1 = cpu_to_le16(channel->lcid);
msg.param2 = cpu_to_le32(granted);
@@ -662,7 +674,7 @@ static int qcom_glink_advertise_intent(struct qcom_glink *glink,
} __packed;
struct command cmd;
- cmd.id = cpu_to_le16(RPM_CMD_INTENT);
+ cmd.id = cpu_to_le16(GLINK_CMD_INTENT);
cmd.lcid = cpu_to_le16(channel->lcid);
cmd.count = cpu_to_le32(1);
cmd.size = cpu_to_le32(intent->size);
@@ -796,7 +808,7 @@ 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, 0, sizeof(dcmd->msg) + extra);
+ qcom_glink_rx_peek(glink, &dcmd->msg, 0, sizeof(dcmd->msg) + extra);
spin_lock(&glink->rx_lock);
list_add_tail(&dcmd->node, &glink->rx_queue);
@@ -829,7 +841,7 @@ static int qcom_glink_rx_data(struct qcom_glink *glink, size_t avail)
return -EAGAIN;
}
- qcom_glink_rx_peak(glink, &hdr, 0, sizeof(hdr));
+ qcom_glink_rx_peek(glink, &hdr, 0, sizeof(hdr));
chunk_size = le32_to_cpu(hdr.chunk_size);
left_size = le32_to_cpu(hdr.left_size);
@@ -894,7 +906,7 @@ static int qcom_glink_rx_data(struct qcom_glink *glink, size_t avail)
goto advance_rx;
}
- qcom_glink_rx_peak(glink, intent->data + intent->offset,
+ qcom_glink_rx_peek(glink, intent->data + intent->offset,
sizeof(hdr), chunk_size);
intent->offset += chunk_size;
@@ -954,6 +966,7 @@ static void qcom_glink_handle_intent(struct qcom_glink *glink,
spin_unlock_irqrestore(&glink->idr_lock, flags);
if (!channel) {
dev_err(glink->dev, "intents for non-existing channel\n");
+ qcom_glink_rx_advance(glink, ALIGN(msglen, 8));
return;
}
@@ -961,7 +974,7 @@ static void qcom_glink_handle_intent(struct qcom_glink *glink,
if (!msg)
return;
- qcom_glink_rx_peak(glink, msg, 0, msglen);
+ qcom_glink_rx_peek(glink, msg, 0, msglen);
for (i = 0; i < count; ++i) {
intent = kzalloc(sizeof(*intent), GFP_ATOMIC);
@@ -1001,9 +1014,8 @@ static int qcom_glink_rx_open_ack(struct qcom_glink *glink, unsigned int lcid)
return 0;
}
-static irqreturn_t qcom_glink_native_intr(int irq, void *data)
+void qcom_glink_native_rx(struct qcom_glink *glink)
{
- struct qcom_glink *glink = data;
struct glink_msg msg;
unsigned int param1;
unsigned int param2;
@@ -1019,49 +1031,47 @@ static irqreturn_t qcom_glink_native_intr(int irq, void *data)
if (avail < sizeof(msg))
break;
- qcom_glink_rx_peak(glink, &msg, 0, sizeof(msg));
+ qcom_glink_rx_peek(glink, &msg, 0, sizeof(msg));
cmd = le16_to_cpu(msg.cmd);
param1 = le16_to_cpu(msg.param1);
param2 = le32_to_cpu(msg.param2);
switch (cmd) {
- case RPM_CMD_VERSION:
- case RPM_CMD_VERSION_ACK:
- case RPM_CMD_CLOSE:
- case RPM_CMD_CLOSE_ACK:
- case RPM_CMD_RX_INTENT_REQ:
+ case GLINK_CMD_VERSION:
+ case GLINK_CMD_VERSION_ACK:
+ case GLINK_CMD_CLOSE:
+ case GLINK_CMD_CLOSE_ACK:
+ case GLINK_CMD_RX_INTENT_REQ:
ret = qcom_glink_rx_defer(glink, 0);
break;
- case RPM_CMD_OPEN_ACK:
+ case GLINK_CMD_OPEN_ACK:
ret = qcom_glink_rx_open_ack(glink, param1);
qcom_glink_rx_advance(glink, ALIGN(sizeof(msg), 8));
break;
- case RPM_CMD_OPEN:
+ case GLINK_CMD_OPEN:
ret = qcom_glink_rx_defer(glink, param2);
break;
- case RPM_CMD_TX_DATA:
- case RPM_CMD_TX_DATA_CONT:
+ case GLINK_CMD_TX_DATA:
+ case GLINK_CMD_TX_DATA_CONT:
ret = qcom_glink_rx_data(glink, avail);
break;
- case RPM_CMD_READ_NOTIF:
+ case GLINK_CMD_READ_NOTIF:
qcom_glink_rx_advance(glink, ALIGN(sizeof(msg), 8));
-
- mbox_send_message(glink->mbox_chan, NULL);
- mbox_client_txdone(glink->mbox_chan, 0);
+ qcom_glink_tx_kick(glink);
break;
- case RPM_CMD_INTENT:
+ case GLINK_CMD_INTENT:
qcom_glink_handle_intent(glink, param1, param2, avail);
break;
- case RPM_CMD_RX_DONE:
+ case GLINK_CMD_RX_DONE:
qcom_glink_handle_rx_done(glink, param1, param2, false);
qcom_glink_rx_advance(glink, ALIGN(sizeof(msg), 8));
break;
- case RPM_CMD_RX_DONE_W_REUSE:
+ case GLINK_CMD_RX_DONE_W_REUSE:
qcom_glink_handle_rx_done(glink, param1, param2, true);
qcom_glink_rx_advance(glink, ALIGN(sizeof(msg), 8));
break;
- case RPM_CMD_RX_INTENT_REQ_ACK:
+ case GLINK_CMD_RX_INTENT_REQ_ACK:
qcom_glink_handle_intent_req_ack(glink, param1, param2);
qcom_glink_rx_advance(glink, ALIGN(sizeof(msg), 8));
break;
@@ -1074,9 +1084,8 @@ static irqreturn_t qcom_glink_native_intr(int irq, void *data)
if (ret)
break;
}
-
- return IRQ_HANDLED;
}
+EXPORT_SYMBOL(qcom_glink_native_rx);
/* Locally initiated rpmsg_create_ept */
static struct glink_channel *qcom_glink_create_local(struct qcom_glink *glink,
@@ -1264,7 +1273,7 @@ static int qcom_glink_request_intent(struct qcom_glink *glink,
reinit_completion(&channel->intent_req_comp);
- cmd.id = RPM_CMD_RX_INTENT_REQ;
+ cmd.id = GLINK_CMD_RX_INTENT_REQ;
cmd.cid = channel->lcid;
cmd.size = size;
@@ -1338,7 +1347,7 @@ static int __qcom_glink_send(struct glink_channel *channel,
chunk_size = SZ_8K;
left_size = len - chunk_size;
}
- req.msg.cmd = cpu_to_le16(RPM_CMD_TX_DATA);
+ req.msg.cmd = cpu_to_le16(GLINK_CMD_TX_DATA);
req.msg.param1 = cpu_to_le16(channel->lcid);
req.msg.param2 = cpu_to_le32(iid);
req.chunk_size = cpu_to_le32(chunk_size);
@@ -1359,7 +1368,7 @@ static int __qcom_glink_send(struct glink_channel *channel,
chunk_size = SZ_8K;
left_size -= chunk_size;
- req.msg.cmd = cpu_to_le16(RPM_CMD_TX_DATA_CONT);
+ req.msg.cmd = cpu_to_le16(GLINK_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);
@@ -1446,6 +1455,7 @@ static void qcom_glink_rpdev_release(struct device *dev)
{
struct rpmsg_device *rpdev = to_rpmsg_device(dev);
+ kfree(rpdev->driver_override);
kfree(rpdev);
}
@@ -1623,22 +1633,22 @@ static void qcom_glink_work(struct work_struct *work)
param2 = le32_to_cpu(msg->param2);
switch (cmd) {
- case RPM_CMD_VERSION:
+ case GLINK_CMD_VERSION:
qcom_glink_receive_version(glink, param1, param2);
break;
- case RPM_CMD_VERSION_ACK:
+ case GLINK_CMD_VERSION_ACK:
qcom_glink_receive_version_ack(glink, param1, param2);
break;
- case RPM_CMD_OPEN:
+ case GLINK_CMD_OPEN:
qcom_glink_rx_open(glink, param1, msg->data);
break;
- case RPM_CMD_CLOSE:
+ case GLINK_CMD_CLOSE:
qcom_glink_rx_close(glink, param1);
break;
- case RPM_CMD_CLOSE_ACK:
+ case GLINK_CMD_CLOSE_ACK:
qcom_glink_rx_close_ack(glink, param1);
break;
- case RPM_CMD_RX_INTENT_REQ:
+ case GLINK_CMD_RX_INTENT_REQ:
qcom_glink_handle_intent_req(glink, param1, param2);
break;
default:
@@ -1689,6 +1699,7 @@ static void qcom_glink_device_release(struct device *dev)
/* Release qcom_glink_alloc_channel() reference */
kref_put(&channel->refcount, qcom_glink_channel_release);
+ kfree(rpdev->driver_override);
kfree(rpdev);
}
@@ -1722,7 +1733,6 @@ struct qcom_glink *qcom_glink_native_probe(struct device *dev,
struct qcom_glink_pipe *tx,
bool intentless)
{
- int irq;
int ret;
struct qcom_glink *glink;
@@ -1753,27 +1763,6 @@ struct qcom_glink *qcom_glink_native_probe(struct device *dev,
if (ret)
dev_err(dev, "failed to add groups\n");
- glink->mbox_client.dev = dev;
- glink->mbox_client.knows_txdone = true;
- glink->mbox_chan = mbox_request_channel(&glink->mbox_client, 0);
- if (IS_ERR(glink->mbox_chan)) {
- if (PTR_ERR(glink->mbox_chan) != -EPROBE_DEFER)
- dev_err(dev, "failed to acquire IPC channel\n");
- return ERR_CAST(glink->mbox_chan);
- }
-
- irq = of_irq_get(dev->of_node, 0);
- ret = devm_request_irq(dev, irq,
- qcom_glink_native_intr,
- IRQF_NO_SUSPEND | IRQF_SHARED,
- "glink-native", glink);
- if (ret) {
- dev_err(dev, "failed to request IRQ\n");
- return ERR_PTR(ret);
- }
-
- glink->irq = irq;
-
ret = qcom_glink_send_version(glink);
if (ret)
return ERR_PTR(ret);
@@ -1796,12 +1785,24 @@ static int qcom_glink_remove_device(struct device *dev, void *data)
void qcom_glink_native_remove(struct qcom_glink *glink)
{
struct glink_channel *channel;
+ unsigned long flags;
int cid;
int ret;
- disable_irq(glink->irq);
qcom_glink_cancel_rx_work(glink);
+ /* Fail all attempts at sending messages */
+ spin_lock_irqsave(&glink->tx_lock, flags);
+ glink->abort_tx = true;
+ wake_up_all(&glink->tx_avail_notify);
+ spin_unlock_irqrestore(&glink->tx_lock, flags);
+
+ /* Abort any senders waiting for intent requests */
+ spin_lock_irqsave(&glink->idr_lock, flags);
+ idr_for_each_entry(&glink->lcids, channel, cid)
+ qcom_glink_intent_req_abort(channel);
+ spin_unlock_irqrestore(&glink->idr_lock, flags);
+
ret = device_for_each_child(glink->dev, NULL, qcom_glink_remove_device);
if (ret)
dev_warn(glink->dev, "Can't remove GLINK devices: %d\n", ret);
@@ -1816,15 +1817,8 @@ void qcom_glink_native_remove(struct qcom_glink *glink)
idr_destroy(&glink->lcids);
idr_destroy(&glink->rcids);
- mbox_free_channel(glink->mbox_chan);
}
EXPORT_SYMBOL_GPL(qcom_glink_native_remove);
-void qcom_glink_native_unregister(struct qcom_glink *glink)
-{
- device_unregister(glink->dev);
-}
-EXPORT_SYMBOL_GPL(qcom_glink_native_unregister);
-
MODULE_DESCRIPTION("Qualcomm GLINK driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/rpmsg/qcom_glink_native.h b/drivers/rpmsg/qcom_glink_native.h
index 624184fc458e..8dbec24de23e 100644
--- a/drivers/rpmsg/qcom_glink_native.h
+++ b/drivers/rpmsg/qcom_glink_native.h
@@ -6,6 +6,8 @@
#ifndef __QCOM_GLINK_NATIVE_H__
#define __QCOM_GLINK_NATIVE_H__
+#include <linux/types.h>
+
#define GLINK_FEATURE_INTENT_REUSE BIT(0)
#define GLINK_FEATURE_MIGRATION BIT(1)
#define GLINK_FEATURE_TRACER_PKT BIT(2)
@@ -15,15 +17,17 @@ struct qcom_glink_pipe {
size_t (*avail)(struct qcom_glink_pipe *glink_pipe);
- void (*peak)(struct qcom_glink_pipe *glink_pipe, void *data,
+ void (*peek)(struct qcom_glink_pipe *glink_pipe, void *data,
unsigned int offset, size_t count);
void (*advance)(struct qcom_glink_pipe *glink_pipe, size_t count);
void (*write)(struct qcom_glink_pipe *glink_pipe,
const void *hdr, size_t hlen,
const void *data, size_t dlen);
+ void (*kick)(struct qcom_glink_pipe *glink_pipe);
};
+struct device;
struct qcom_glink;
struct qcom_glink *qcom_glink_native_probe(struct device *dev,
@@ -32,6 +36,6 @@ struct qcom_glink *qcom_glink_native_probe(struct device *dev,
struct qcom_glink_pipe *tx,
bool intentless);
void qcom_glink_native_remove(struct qcom_glink *glink);
+void qcom_glink_native_rx(struct qcom_glink *glink);
-void qcom_glink_native_unregister(struct qcom_glink *glink);
#endif
diff --git a/drivers/rpmsg/qcom_glink_rpm.c b/drivers/rpmsg/qcom_glink_rpm.c
index f64f45d1a735..f94bb7d4f1ec 100644
--- a/drivers/rpmsg/qcom_glink_rpm.c
+++ b/drivers/rpmsg/qcom_glink_rpm.c
@@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/rpmsg.h>
@@ -53,6 +54,18 @@ struct glink_rpm_pipe {
void __iomem *fifo;
};
+struct glink_rpm {
+ struct qcom_glink *glink;
+
+ int irq;
+
+ struct mbox_client mbox_client;
+ struct mbox_chan *mbox_chan;
+
+ struct glink_rpm_pipe rx_pipe;
+ struct glink_rpm_pipe tx_pipe;
+};
+
static size_t glink_rpm_rx_avail(struct qcom_glink_pipe *glink_pipe)
{
struct glink_rpm_pipe *pipe = to_rpm_pipe(glink_pipe);
@@ -68,7 +81,7 @@ static size_t glink_rpm_rx_avail(struct qcom_glink_pipe *glink_pipe)
return head - tail;
}
-static void glink_rpm_rx_peak(struct qcom_glink_pipe *glink_pipe,
+static void glink_rpm_rx_peek(struct qcom_glink_pipe *glink_pipe,
void *data, unsigned int offset, size_t count)
{
struct glink_rpm_pipe *pipe = to_rpm_pipe(glink_pipe);
@@ -179,6 +192,24 @@ static void glink_rpm_tx_write(struct qcom_glink_pipe *glink_pipe,
writel(head, pipe->head);
}
+static void glink_rpm_tx_kick(struct qcom_glink_pipe *glink_pipe)
+{
+ struct glink_rpm_pipe *pipe = to_rpm_pipe(glink_pipe);
+ struct glink_rpm *rpm = container_of(pipe, struct glink_rpm, tx_pipe);
+
+ mbox_send_message(rpm->mbox_chan, NULL);
+ mbox_client_txdone(rpm->mbox_chan, 0);
+}
+
+static irqreturn_t qcom_glink_rpm_intr(int irq, void *data)
+{
+ struct glink_rpm *rpm = data;
+
+ qcom_glink_native_rx(rpm->glink);
+
+ return IRQ_HANDLED;
+}
+
static int glink_rpm_parse_toc(struct device *dev,
void __iomem *msg_ram,
size_t msg_ram_size,
@@ -257,8 +288,7 @@ err_inval:
static int glink_rpm_probe(struct platform_device *pdev)
{
struct qcom_glink *glink;
- struct glink_rpm_pipe *rx_pipe;
- struct glink_rpm_pipe *tx_pipe;
+ struct glink_rpm *rpm;
struct device_node *np;
void __iomem *msg_ram;
size_t msg_ram_size;
@@ -266,9 +296,8 @@ static int glink_rpm_probe(struct platform_device *pdev)
struct resource r;
int ret;
- rx_pipe = devm_kzalloc(&pdev->dev, sizeof(*rx_pipe), GFP_KERNEL);
- tx_pipe = devm_kzalloc(&pdev->dev, sizeof(*tx_pipe), GFP_KERNEL);
- if (!rx_pipe || !tx_pipe)
+ rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
+ if (!rpm)
return -ENOMEM;
np = of_parse_phandle(dev->of_node, "qcom,rpm-msg-ram", 0);
@@ -283,39 +312,66 @@ static int glink_rpm_probe(struct platform_device *pdev)
return -ENOMEM;
ret = glink_rpm_parse_toc(dev, msg_ram, msg_ram_size,
- rx_pipe, tx_pipe);
+ &rpm->rx_pipe, &rpm->tx_pipe);
if (ret)
return ret;
+ rpm->irq = of_irq_get(dev->of_node, 0);
+ ret = devm_request_irq(dev, rpm->irq, qcom_glink_rpm_intr,
+ IRQF_NO_SUSPEND | IRQF_NO_AUTOEN,
+ "glink-rpm", rpm);
+ if (ret) {
+ dev_err(dev, "failed to request IRQ\n");
+ return ret;
+ }
+
+ rpm->mbox_client.dev = dev;
+ rpm->mbox_client.knows_txdone = true;
+ rpm->mbox_chan = mbox_request_channel(&rpm->mbox_client, 0);
+ if (IS_ERR(rpm->mbox_chan))
+ return dev_err_probe(dev, PTR_ERR(rpm->mbox_chan), "failed to acquire IPC channel\n");
+
/* Pipe specific accessors */
- rx_pipe->native.avail = glink_rpm_rx_avail;
- rx_pipe->native.peak = glink_rpm_rx_peak;
- rx_pipe->native.advance = glink_rpm_rx_advance;
- tx_pipe->native.avail = glink_rpm_tx_avail;
- tx_pipe->native.write = glink_rpm_tx_write;
+ rpm->rx_pipe.native.avail = glink_rpm_rx_avail;
+ rpm->rx_pipe.native.peek = glink_rpm_rx_peek;
+ rpm->rx_pipe.native.advance = glink_rpm_rx_advance;
+ rpm->tx_pipe.native.avail = glink_rpm_tx_avail;
+ rpm->tx_pipe.native.write = glink_rpm_tx_write;
+ rpm->tx_pipe.native.kick = glink_rpm_tx_kick;
- writel(0, tx_pipe->head);
- writel(0, rx_pipe->tail);
+ writel(0, rpm->tx_pipe.head);
+ writel(0, rpm->rx_pipe.tail);
- glink = qcom_glink_native_probe(&pdev->dev,
+ glink = qcom_glink_native_probe(dev,
0,
- &rx_pipe->native,
- &tx_pipe->native,
+ &rpm->rx_pipe.native,
+ &rpm->tx_pipe.native,
true);
- if (IS_ERR(glink))
+ if (IS_ERR(glink)) {
+ mbox_free_channel(rpm->mbox_chan);
return PTR_ERR(glink);
+ }
+
+ rpm->glink = glink;
- platform_set_drvdata(pdev, glink);
+ platform_set_drvdata(pdev, rpm);
+
+ enable_irq(rpm->irq);
return 0;
}
static int glink_rpm_remove(struct platform_device *pdev)
{
- struct qcom_glink *glink = platform_get_drvdata(pdev);
+ struct glink_rpm *rpm = platform_get_drvdata(pdev);
+ struct qcom_glink *glink = rpm->glink;
+
+ disable_irq(rpm->irq);
qcom_glink_native_remove(glink);
+ mbox_free_channel(rpm->mbox_chan);
+
return 0;
}
diff --git a/drivers/rpmsg/qcom_glink_smem.c b/drivers/rpmsg/qcom_glink_smem.c
index 579bc4443f6d..7a982c60a8dd 100644
--- a/drivers/rpmsg/qcom_glink_smem.c
+++ b/drivers/rpmsg/qcom_glink_smem.c
@@ -7,8 +7,10 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
+#include <linux/mailbox_client.h>
#include <linux/mfd/syscon.h>
#include <linux/slab.h>
#include <linux/rpmsg.h>
@@ -33,6 +35,18 @@
#define SMEM_GLINK_NATIVE_XPRT_FIFO_0 479
#define SMEM_GLINK_NATIVE_XPRT_FIFO_1 480
+struct qcom_glink_smem {
+ struct device dev;
+
+ int irq;
+ struct qcom_glink *glink;
+
+ struct mbox_client mbox_client;
+ struct mbox_chan *mbox_chan;
+
+ u32 remote_pid;
+};
+
struct glink_smem_pipe {
struct qcom_glink_pipe native;
@@ -41,7 +55,7 @@ struct glink_smem_pipe {
void *fifo;
- int remote_pid;
+ struct qcom_glink_smem *smem;
};
#define to_smem_pipe(p) container_of(p, struct glink_smem_pipe, native)
@@ -49,13 +63,14 @@ struct glink_smem_pipe {
static size_t glink_smem_rx_avail(struct qcom_glink_pipe *np)
{
struct glink_smem_pipe *pipe = to_smem_pipe(np);
+ struct qcom_glink_smem *smem = pipe->smem;
size_t len;
void *fifo;
u32 head;
u32 tail;
if (!pipe->fifo) {
- fifo = qcom_smem_get(pipe->remote_pid,
+ fifo = qcom_smem_get(smem->remote_pid,
SMEM_GLINK_NATIVE_XPRT_FIFO_1, &len);
if (IS_ERR(fifo)) {
pr_err("failed to acquire RX fifo handle: %ld\n",
@@ -76,7 +91,7 @@ static size_t glink_smem_rx_avail(struct qcom_glink_pipe *np)
return head - tail;
}
-static void glink_smem_rx_peak(struct qcom_glink_pipe *np,
+static void glink_smem_rx_peek(struct qcom_glink_pipe *np,
void *data, unsigned int offset, size_t count)
{
struct glink_smem_pipe *pipe = to_smem_pipe(np);
@@ -177,16 +192,37 @@ static void glink_smem_tx_write(struct qcom_glink_pipe *glink_pipe,
*pipe->head = cpu_to_le32(head);
}
+static void glink_smem_tx_kick(struct qcom_glink_pipe *glink_pipe)
+{
+ struct glink_smem_pipe *pipe = to_smem_pipe(glink_pipe);
+ struct qcom_glink_smem *smem = pipe->smem;
+
+ mbox_send_message(smem->mbox_chan, NULL);
+ mbox_client_txdone(smem->mbox_chan, 0);
+}
+
+static irqreturn_t qcom_glink_smem_intr(int irq, void *data)
+{
+ struct qcom_glink_smem *smem = data;
+
+ qcom_glink_native_rx(smem->glink);
+
+ return IRQ_HANDLED;
+}
+
static void qcom_glink_smem_release(struct device *dev)
{
- kfree(dev);
+ struct qcom_glink_smem *smem = container_of(dev, struct qcom_glink_smem, dev);
+
+ kfree(smem);
}
-struct qcom_glink *qcom_glink_smem_register(struct device *parent,
- struct device_node *node)
+struct qcom_glink_smem *qcom_glink_smem_register(struct device *parent,
+ struct device_node *node)
{
struct glink_smem_pipe *rx_pipe;
struct glink_smem_pipe *tx_pipe;
+ struct qcom_glink_smem *smem;
struct qcom_glink *glink;
struct device *dev;
u32 remote_pid;
@@ -194,10 +230,12 @@ struct qcom_glink *qcom_glink_smem_register(struct device *parent,
size_t size;
int ret;
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev)
+ smem = kzalloc(sizeof(*smem), GFP_KERNEL);
+ if (!smem)
return ERR_PTR(-ENOMEM);
+ dev = &smem->dev;
+
dev->parent = parent;
dev->of_node = node;
dev->release = qcom_glink_smem_release;
@@ -216,6 +254,8 @@ struct qcom_glink *qcom_glink_smem_register(struct device *parent,
goto err_put_dev;
}
+ smem->remote_pid = remote_pid;
+
rx_pipe = devm_kzalloc(dev, sizeof(*rx_pipe), GFP_KERNEL);
tx_pipe = devm_kzalloc(dev, sizeof(*tx_pipe), GFP_KERNEL);
if (!rx_pipe || !tx_pipe) {
@@ -264,14 +304,33 @@ struct qcom_glink *qcom_glink_smem_register(struct device *parent,
goto err_put_dev;
}
+ smem->irq = of_irq_get(smem->dev.of_node, 0);
+ ret = devm_request_irq(&smem->dev, smem->irq, qcom_glink_smem_intr,
+ IRQF_NO_SUSPEND | IRQF_NO_AUTOEN,
+ "glink-smem", smem);
+ if (ret) {
+ dev_err(&smem->dev, "failed to request IRQ\n");
+ goto err_put_dev;
+ }
+
+ smem->mbox_client.dev = &smem->dev;
+ smem->mbox_client.knows_txdone = true;
+ smem->mbox_chan = mbox_request_channel(&smem->mbox_client, 0);
+ if (IS_ERR(smem->mbox_chan)) {
+ ret = dev_err_probe(&smem->dev, PTR_ERR(smem->mbox_chan),
+ "failed to acquire IPC channel\n");
+ goto err_put_dev;
+ }
+
+ rx_pipe->smem = smem;
rx_pipe->native.avail = glink_smem_rx_avail;
- rx_pipe->native.peak = glink_smem_rx_peak;
+ rx_pipe->native.peek = glink_smem_rx_peek;
rx_pipe->native.advance = glink_smem_rx_advance;
- rx_pipe->remote_pid = remote_pid;
+ tx_pipe->smem = smem;
tx_pipe->native.avail = glink_smem_tx_avail;
tx_pipe->native.write = glink_smem_tx_write;
- tx_pipe->remote_pid = remote_pid;
+ tx_pipe->native.kick = glink_smem_tx_kick;
*rx_pipe->tail = 0;
*tx_pipe->head = 0;
@@ -282,10 +341,17 @@ struct qcom_glink *qcom_glink_smem_register(struct device *parent,
false);
if (IS_ERR(glink)) {
ret = PTR_ERR(glink);
- goto err_put_dev;
+ goto err_free_mbox;
}
- return glink;
+ smem->glink = glink;
+
+ enable_irq(smem->irq);
+
+ return smem;
+
+err_free_mbox:
+ mbox_free_channel(smem->mbox_chan);
err_put_dev:
device_unregister(dev);
@@ -294,10 +360,16 @@ err_put_dev:
}
EXPORT_SYMBOL_GPL(qcom_glink_smem_register);
-void qcom_glink_smem_unregister(struct qcom_glink *glink)
+void qcom_glink_smem_unregister(struct qcom_glink_smem *smem)
{
+ struct qcom_glink *glink = smem->glink;
+
+ disable_irq(smem->irq);
+
qcom_glink_native_remove(glink);
- qcom_glink_native_unregister(glink);
+
+ mbox_free_channel(smem->mbox_chan);
+ device_unregister(&smem->dev);
}
EXPORT_SYMBOL_GPL(qcom_glink_smem_unregister);
diff --git a/drivers/rpmsg/qcom_glink_ssr.c b/drivers/rpmsg/qcom_glink_ssr.c
index 776d64446879..39ffa384c9b1 100644
--- a/drivers/rpmsg/qcom_glink_ssr.c
+++ b/drivers/rpmsg/qcom_glink_ssr.c
@@ -111,7 +111,7 @@ static int qcom_glink_ssr_notifier_call(struct notifier_block *nb,
msg.command = cpu_to_le32(GLINK_SSR_DO_CLEANUP);
msg.seq_num = cpu_to_le32(ssr->seq_num);
msg.name_len = cpu_to_le32(strlen(ssr_name));
- strlcpy(msg.name, ssr_name, sizeof(msg.name));
+ strscpy(msg.name, ssr_name, sizeof(msg.name));
ret = rpmsg_send(ssr->ept, &msg, sizeof(msg));
if (ret < 0)
diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
index 3e0b8f3496ed..a271fceb16f4 100644
--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -75,6 +75,7 @@ int rpmsg_chrdev_eptdev_destroy(struct device *dev, void *data)
struct rpmsg_eptdev *eptdev = dev_to_eptdev(dev);
mutex_lock(&eptdev->ept_lock);
+ eptdev->rpdev = NULL;
if (eptdev->ept) {
/* The default endpoint is released by the rpmsg core */
if (!eptdev->default_ept)
@@ -128,6 +129,11 @@ static int rpmsg_eptdev_open(struct inode *inode, struct file *filp)
return -EBUSY;
}
+ if (!eptdev->rpdev) {
+ mutex_unlock(&eptdev->ept_lock);
+ return -ENETRESET;
+ }
+
get_device(dev);
/*
@@ -279,7 +285,9 @@ static __poll_t rpmsg_eptdev_poll(struct file *filp, poll_table *wait)
if (!skb_queue_empty(&eptdev->queue))
mask |= EPOLLIN | EPOLLRDNORM;
+ mutex_lock(&eptdev->ept_lock);
mask |= rpmsg_poll(eptdev->ept, filp, wait);
+ mutex_unlock(&eptdev->ept_lock);
return mask;
}
diff --git a/drivers/rpmsg/rpmsg_ctrl.c b/drivers/rpmsg/rpmsg_ctrl.c
index 107da70fdbaa..433253835690 100644
--- a/drivers/rpmsg/rpmsg_ctrl.c
+++ b/drivers/rpmsg/rpmsg_ctrl.c
@@ -194,10 +194,12 @@ static void rpmsg_ctrldev_remove(struct rpmsg_device *rpdev)
struct rpmsg_ctrldev *ctrldev = dev_get_drvdata(&rpdev->dev);
int ret;
+ mutex_lock(&ctrldev->ctrl_lock);
/* Destroy all endpoints */
ret = device_for_each_child(&ctrldev->dev, NULL, rpmsg_chrdev_eptdev_destroy);
if (ret)
dev_warn(&rpdev->dev, "failed to nuke endpoints: %d\n", ret);
+ mutex_unlock(&ctrldev->ctrl_lock);
cdev_device_del(&ctrldev->cdev, &ctrldev->dev);
put_device(&ctrldev->dev);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 03:42:27 +0100