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Subject[RFC 45/50] staging: vchi: Move vchi_queue_kernel_message() into vchiq
Date
We can't really merge it with vchiq_queue_message() as it has internal
users that will not benefit from the retry mechanism
vchiq_queue_kernel_message() uses. So, for the sake of getting rid of
vchi, move it into vchiq.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
.../bcm2835-audio/bcm2835-vchiq.c | 8 +++----
.../vc04_services/interface/vchi/vchi.h | 4 ----
.../interface/vchiq_arm/vchiq_core.c | 23 ++++++++++++++++---
.../interface/vchiq_arm/vchiq_if.h | 4 ++--
.../interface/vchiq_arm/vchiq_shim.c | 22 ------------------
.../vc04_services/vc-sm-cma/vc_sm_cma_vchi.c | 2 +-
.../vc04_services/vchiq-mmal/mmal-vchiq.c | 14 +++++------
7 files changed, 33 insertions(+), 44 deletions(-)

diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
index 28d64bc895cd..efaa2ae11f52 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
@@ -44,8 +44,8 @@ static int bcm2835_audio_send_msg_locked(struct bcm2835_audio_instance *instance
init_completion(&instance->msg_avail_comp);
}

- status = vchi_queue_kernel_message(instance->service_handle,
- m, sizeof(*m));
+ status = vchiq_queue_kernel_message(instance->service_handle,
+ m, sizeof(*m));
if (status) {
dev_err(instance->dev,
"vchi message queue failed: %d, msg=%d\n",
@@ -350,8 +350,8 @@ int bcm2835_audio_write(struct bcm2835_alsa_stream *alsa_stream,
while (count > 0) {
int bytes = min(instance->max_packet, count);

- status = vchi_queue_kernel_message(instance->service_handle,
- src, bytes);
+ status = vchiq_queue_kernel_message(instance->service_handle,
+ src, bytes);
src += bytes;
count -= bytes;
}
diff --git a/drivers/staging/vc04_services/interface/vchi/vchi.h b/drivers/staging/vc04_services/interface/vchi/vchi.h
index c800796f9986..6de5df43cc29 100644
--- a/drivers/staging/vc04_services/interface/vchi/vchi.h
+++ b/drivers/staging/vc04_services/interface/vchi/vchi.h
@@ -37,10 +37,6 @@ extern int32_t vchi_service_use(unsigned handle);
// Routine to decrement ref count on a named service
extern int32_t vchi_service_release(unsigned handle);

-/* Routine to send a message from kernel memory across a service */
-extern int vchi_queue_kernel_message(unsigned handle, void *data,
- unsigned int size);
-
// Routine to look at a message in place.
// The message is dequeued, so the caller is left holding it; the descriptor is
// filled in and must be released when the user has finished with the message.
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
index 01a9331dbff4..ee11707b7476 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
@@ -3213,11 +3213,28 @@ vchiq_queue_message(unsigned int handle,
return status;
}

-enum vchiq_status vchiq_queue_kernel_message(unsigned int handle, void *context,
- size_t size)
+int vchiq_queue_kernel_message(unsigned handle, void *data, unsigned size)
{
- return vchiq_queue_message(handle, memcpy_copy_callback, context, size);
+ enum vchiq_status status;
+
+ while (1) {
+ status = vchiq_queue_message(handle, memcpy_copy_callback,
+ data, size);
+
+ /*
+ * vchiq_queue_message() may return VCHIQ_RETRY, so we need to
+ * implement a retry mechanism since this function is supposed
+ * to block until queued
+ */
+ if (status != VCHIQ_RETRY)
+ break;
+
+ msleep(1);
+ }
+
+ return status;
}
+EXPORT_SYMBOL(vchiq_queue_kernel_message);

void
vchiq_release_message(unsigned int handle,
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h
index 931debcd6492..6374eda4ea0c 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h
@@ -89,8 +89,8 @@ extern enum vchiq_status vchiq_open_service(struct vchiq_instance *instance,
extern enum vchiq_status vchiq_close_service(unsigned int service);
extern enum vchiq_status vchiq_use_service(unsigned int service);
extern enum vchiq_status vchiq_release_service(unsigned int service);
-extern enum vchiq_status vchiq_queue_kernel_message(unsigned int handle,
- void *context, size_t size);
+extern int vchiq_queue_kernel_message(unsigned handle, void *data,
+ unsigned size);
extern void vchiq_msg_queue_push(unsigned handle, struct vchiq_header *header);
extern void vchiq_release_message(unsigned int service,
struct vchiq_header *header);
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
index 33493643b5f8..57ac6a289a08 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
@@ -9,28 +9,6 @@
#include "../vchi/vchi.h"
#include "vchiq.h"

-int vchi_queue_kernel_message(unsigned handle, void *data, unsigned int size)
-{
- enum vchiq_status status;
-
- while (1) {
- status = vchiq_queue_kernel_message(handle, data, size);
-
- /*
- * vchiq_queue_message() may return VCHIQ_RETRY, so we need to
- * implement a retry mechanism since this function is supposed
- * to block until queued
- */
- if (status != VCHIQ_RETRY)
- break;
-
- msleep(1);
- }
-
- return status;
-}
-EXPORT_SYMBOL(vchi_queue_kernel_message);
-
/***********************************************************
* Name: vchi_held_msg_release
*
diff --git a/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c
index 0b1a510d6bab..dc8c469b37d2 100644
--- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c
+++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c
@@ -78,7 +78,7 @@ struct sm_instance {
static int
bcm2835_vchi_msg_queue(unsigned handle, void *data, unsigned int size)
{
- return vchi_queue_kernel_message(handle, data, size);
+ return vchiq_queue_kernel_message(handle, data, size);
}

static struct
diff --git a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
index b5d40074cdc7..664547c8e4a9 100644
--- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
@@ -452,10 +452,9 @@ buffer_from_host(struct vchiq_mmal_instance *instance,

vchi_service_use(instance->service_handle);

- ret = vchi_queue_kernel_message(instance->service_handle,
- &m,
- sizeof(struct mmal_msg_header) +
- sizeof(m.u.buffer_from_host));
+ ret = vchiq_queue_kernel_message(instance->service_handle, &m,
+ sizeof(struct mmal_msg_header) +
+ sizeof(m.u.buffer_from_host));

vchi_service_release(instance->service_handle);

@@ -806,10 +805,9 @@ static int send_synchronous_mmal_msg(struct vchiq_mmal_instance *instance,

vchi_service_use(instance->service_handle);

- ret = vchi_queue_kernel_message(instance->service_handle,
- msg,
- sizeof(struct mmal_msg_header) +
- payload_len);
+ ret = vchiq_queue_kernel_message(instance->service_handle, msg,
+ sizeof(struct mmal_msg_header) +
+ payload_len);

vchi_service_release(instance->service_handle);

--
2.26.2
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