remoteproc: k3: Refactor .kick rproc ops into common driver

The .kick rproc ops implementations in TI K3 R5, DSP and M4 remoteproc
drivers sends a mailbox message to the remote processor in the same
way. Refactor the implementations into a common function
'k3_rproc_kick()' in the ti_k3_common.c driver.

Signed-off-by: Beleswar Padhi <[email protected]>
Acked-by: Andrew Davis <[email protected]>
Tested-by: Judith Mendez <[email protected]>
Reviewed-by: Andrew Davis <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mathieu Poirier <[email protected]>

Author: 3V3RYONE

drivers/remoteproc/ti_k3_common.c

@@ -84,5 +84,30 @@ void k3_rproc_mbox_callback(struct mbox_client *client, void *data)
 }
 EXPORT_SYMBOL_GPL(k3_rproc_mbox_callback);
 
+/*
+ * Kick the remote processor to notify about pending unprocessed messages.
+ * The vqid usage is not used and is inconsequential, as the kick is performed
+ * through a simulated GPIO (a bit in an IPC interrupt-triggering register),
+ * the remote processor is expected to process both its Tx and Rx virtqueues.
+ */
+void k3_rproc_kick(struct rproc *rproc, int vqid)
+{
+	struct k3_rproc *kproc = rproc->priv;
+	struct device *dev = kproc->dev;
+	u32 msg = (u32)vqid;
+	int ret;
+
+	/*
+	 * Send the index of the triggered virtqueue in the mailbox payload.
+	 * NOTE: msg is cast to uintptr_t to prevent compiler warnings when
+	 * void* is 64bit. It is safely cast back to u32 in the mailbox driver.
+	 */
+	ret = mbox_send_message(kproc->mbox, (void *)(uintptr_t)msg);
+	if (ret < 0)
+		dev_err(dev, "failed to send mailbox message, status = %d\n",
+			ret);
+}
+EXPORT_SYMBOL_GPL(k3_rproc_kick);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("TI K3 common Remoteproc code");

drivers/remoteproc/ti_k3_common.h

@@ -94,4 +94,5 @@ struct k3_rproc {
 };
 
 void k3_rproc_mbox_callback(struct mbox_client *client, void *data);
+void k3_rproc_kick(struct rproc *rproc, int vqid);
 #endif /* REMOTEPROC_TI_K3_COMMON_H */

drivers/remoteproc/ti_k3_dsp_remoteproc.c

@@ -24,26 +24,6 @@
 
 #define KEYSTONE_RPROC_LOCAL_ADDRESS_MASK	(SZ_16M - 1)
 
-/*
- * Kick the remote processor to notify about pending unprocessed messages.
- * The vqid usage is not used and is inconsequential, as the kick is performed
- * through a simulated GPIO (a bit in an IPC interrupt-triggering register),
- * the remote processor is expected to process both its Tx and Rx virtqueues.
- */
-static void k3_dsp_rproc_kick(struct rproc *rproc, int vqid)
-{
-	struct k3_rproc *kproc = rproc->priv;
-	struct device *dev = rproc->dev.parent;
-	mbox_msg_t msg = (mbox_msg_t)vqid;
-	int ret;
-
-	/* send the index of the triggered virtqueue in the mailbox payload */
-	ret = mbox_send_message(kproc->mbox, (void *)msg);
-	if (ret < 0)
-		dev_err(dev, "failed to send mailbox message (%pe)\n",
-			ERR_PTR(ret));
-}
-
 /* Put the DSP processor into reset */
 static int k3_dsp_rproc_reset(struct k3_rproc *kproc)
 {
@@ -342,7 +322,7 @@ static void *k3_dsp_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool
 static const struct rproc_ops k3_dsp_rproc_ops = {
 	.start		= k3_dsp_rproc_start,
 	.stop		= k3_dsp_rproc_stop,
-	.kick		= k3_dsp_rproc_kick,
+	.kick		= k3_rproc_kick,
 	.da_to_va	= k3_dsp_rproc_da_to_va,
 };
 

drivers/remoteproc/ti_k3_m4_remoteproc.c

@@ -21,30 +21,6 @@
 #include "ti_sci_proc.h"
 #include "ti_k3_common.h"
 
-/*
- * Kick the remote processor to notify about pending unprocessed messages.
- * The vqid usage is not used and is inconsequential, as the kick is performed
- * through a simulated GPIO (a bit in an IPC interrupt-triggering register),
- * the remote processor is expected to process both its Tx and Rx virtqueues.
- */
-static void k3_m4_rproc_kick(struct rproc *rproc, int vqid)
-{
-	struct k3_rproc *kproc = rproc->priv;
-	struct device *dev = kproc->dev;
-	u32 msg = (u32)vqid;
-	int ret;
-
-	/*
-	 * Send the index of the triggered virtqueue in the mailbox payload.
-	 * NOTE: msg is cast to uintptr_t to prevent compiler warnings when
-	 * void* is 64bit. It is safely cast back to u32 in the mailbox driver.
-	 */
-	ret = mbox_send_message(kproc->mbox, (void *)(uintptr_t)msg);
-	if (ret < 0)
-		dev_err(dev, "failed to send mailbox message, status = %d\n",
-			ret);
-}
-
 static int k3_m4_rproc_ping_mbox(struct k3_rproc *kproc)
 {
 	struct device *dev = kproc->dev;
@@ -448,7 +424,7 @@ static const struct rproc_ops k3_m4_rproc_ops = {
 	.stop = k3_m4_rproc_stop,
 	.attach = k3_m4_rproc_attach,
 	.detach = k3_m4_rproc_detach,
-	.kick = k3_m4_rproc_kick,
+	.kick = k3_rproc_kick,
 	.da_to_va = k3_m4_rproc_da_to_va,
 	.get_loaded_rsc_table = k3_m4_get_loaded_rsc_table,
 };

drivers/remoteproc/ti_k3_r5_remoteproc.c

@@ -129,21 +129,6 @@ struct k3_r5_core {
 	bool released_from_reset;
 };
 
-/* kick a virtqueue */
-static void k3_r5_rproc_kick(struct rproc *rproc, int vqid)
-{
-	struct k3_rproc *kproc = rproc->priv;
-	struct device *dev = rproc->dev.parent;
-	mbox_msg_t msg = (mbox_msg_t)vqid;
-	int ret;
-
-	/* send the index of the triggered virtqueue in the mailbox payload */
-	ret = mbox_send_message(kproc->mbox, (void *)msg);
-	if (ret < 0)
-		dev_err(dev, "failed to send mailbox message, status = %d\n",
-			ret);
-}
-
 static int k3_r5_split_reset(struct k3_rproc *kproc)
 {
 	int ret;
@@ -735,7 +720,7 @@ static const struct rproc_ops k3_r5_rproc_ops = {
 	.unprepare	= k3_r5_rproc_unprepare,
 	.start		= k3_r5_rproc_start,
 	.stop		= k3_r5_rproc_stop,
-	.kick		= k3_r5_rproc_kick,
+	.kick		= k3_rproc_kick,
 	.da_to_va	= k3_r5_rproc_da_to_va,
 };