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Message-Id: <20200527115400.31391-45-nsaenzjulienne@suse.de>
Date: Wed, 27 May 2020 13:53:49 +0200
From: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To: bcm-kernel-feedback-list@...adcom.com,
linux-rpi-kernel@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org,
Florian Fainelli <f.fainelli@...il.com>,
Ray Jui <rjui@...adcom.com>,
Scott Branden <sbranden@...adcom.com>,
Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Cc: kernel-list@...pberrypi.com, laurent.pinchart@...asonboard.com,
gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org
Subject: [RFC 44/50] staging: vchi: Get rid of vchi_bulk_queue_transmit()
Its vchiq counterpart, vchiq_bulk_transmit() is only used by vchi. We
can then merge both functions by moving vchi_bulk_queue_transmit()'s
retry mechanism into vchiq_bulk_transmit() and let services call the
later.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
---
.../bcm2835-audio/bcm2835-vchiq.c | 7 +-
.../vc04_services/interface/vchi/vchi.h | 11 ----
.../interface/vchiq_arm/vchiq_arm.c | 38 +++++++----
.../interface/vchiq_arm/vchiq_shim.c | 66 ++++---------------
4 files changed, 41 insertions(+), 81 deletions(-)
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
index 55f1e684eef1..28d64bc895cd 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
@@ -343,10 +343,9 @@ int bcm2835_audio_write(struct bcm2835_alsa_stream *alsa_stream,
count = size;
if (!instance->max_packet) {
/* Send the message to the videocore */
- status = vchi_bulk_queue_transmit(instance->service_handle,
- src, count,
- VCHIQ_BULK_MODE_BLOCKING,
- NULL);
+ status = vchiq_bulk_transmit(instance->service_handle, src,
+ count, NULL,
+ VCHIQ_BULK_MODE_BLOCKING);
} else {
while (count > 0) {
int bytes = min(instance->max_packet, count);
diff --git a/drivers/staging/vc04_services/interface/vchi/vchi.h b/drivers/staging/vc04_services/interface/vchi/vchi.h
index ca20b99122f2..c800796f9986 100644
--- a/drivers/staging/vc04_services/interface/vchi/vchi.h
+++ b/drivers/staging/vc04_services/interface/vchi/vchi.h
@@ -54,17 +54,6 @@ struct vchiq_header *vchi_msg_hold(unsigned handle);
// Routine to release a held message after it has been processed
extern int32_t vchi_held_msg_release(unsigned handle, struct vchiq_header *message);
-/******************************************************************************
- * Global bulk API
- *****************************************************************************/
-
-// Routine to queue up data ready for transfer to the other (once they have signalled they are ready)
-extern int32_t vchi_bulk_queue_transmit(unsigned handle,
- const void *data_src,
- uint32_t data_size,
- enum vchiq_bulk_mode mode,
- void *transfer_handle);
-
/******************************************************************************
* Configuration plumbing
*****************************************************************************/
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 084e98b4ca61..524128225766 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -361,19 +361,31 @@ vchiq_bulk_transmit(unsigned int handle, const void *data,
{
enum vchiq_status status;
- switch (mode) {
- case VCHIQ_BULK_MODE_NOCALLBACK:
- case VCHIQ_BULK_MODE_CALLBACK:
- status = vchiq_bulk_transfer(handle, (void *)data, size,
- userdata, mode,
- VCHIQ_BULK_TRANSMIT);
- break;
- case VCHIQ_BULK_MODE_BLOCKING:
- status = vchiq_blocking_bulk_transfer(handle,
- (void *)data, size, VCHIQ_BULK_TRANSMIT);
- break;
- default:
- return VCHIQ_ERROR;
+ while (1) {
+ switch (mode) {
+ case VCHIQ_BULK_MODE_NOCALLBACK:
+ case VCHIQ_BULK_MODE_CALLBACK:
+ status = vchiq_bulk_transfer(handle, (void *)data, size,
+ userdata, mode,
+ VCHIQ_BULK_TRANSMIT);
+ break;
+ case VCHIQ_BULK_MODE_BLOCKING:
+ status = vchiq_blocking_bulk_transfer(handle,
+ (void *)data, size, VCHIQ_BULK_TRANSMIT);
+ break;
+ default:
+ return VCHIQ_ERROR;
+ }
+
+ /*
+ * vchiq_*_bulk_transfer() 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;
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 f69936a9eb29..33493643b5f8 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
@@ -31,46 +31,6 @@ int vchi_queue_kernel_message(unsigned handle, void *data, unsigned int size)
}
EXPORT_SYMBOL(vchi_queue_kernel_message);
-/***********************************************************
- * Name: vchi_bulk_queue_transmit
- *
- * Arguments: VCHI_BULK_HANDLE_T handle,
- * const void *data_src,
- * uint32_t data_size,
- * enum vchi_flags flags,
- * void *bulk_handle
- *
- * Description: Routine to transmit some data
- *
- * Returns: int32_t - success == 0
- *
- ***********************************************************/
-int32_t vchi_bulk_queue_transmit(unsigned handle, const void *data_src,
- uint32_t data_size, enum vchiq_bulk_mode mode,
- void *bulk_handle)
-{
- enum vchiq_status status;
-
- while (1) {
- status = vchiq_bulk_transmit(handle, data_src, data_size,
- bulk_handle, mode);
-
- /*
- * vchiq_bulk_transmit() 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_bulk_queue_transmit);
-
-
/***********************************************************
* Name: vchi_held_msg_release
*
@@ -80,10 +40,10 @@ EXPORT_SYMBOL(vchi_bulk_queue_transmit);
* Description: Routine to release a held message (after it has been read with
* vchi_msg_hold)
*
- * Returns: int32_t - success == 0
+ * Returns: int - success == 0
*
***********************************************************/
-int32_t vchi_held_msg_release(unsigned handle, struct vchiq_header *message)
+int vchi_held_msg_release(unsigned handle, struct vchiq_header *message)
{
/*
* Convert the service field pointer back to an
@@ -104,7 +64,7 @@ EXPORT_SYMBOL(vchi_held_msg_release);
*
* Arguments: struct vchi_service *service,
* void **data,
- * uint32_t *msg_size,
+ * unsigned *msg_size,
* struct vchiq_header **message
*
* Description: Routine to return a pointer to the current message (to allow
@@ -112,7 +72,7 @@ EXPORT_SYMBOL(vchi_held_msg_release);
* to release the message using vchi_held_msg_release when you're
* finished.
*
- * Returns: int32_t - success == 0
+ * Returns: int - success == 0
*
***********************************************************/
struct vchiq_header *vchi_msg_hold(unsigned handle)
@@ -134,7 +94,7 @@ EXPORT_SYMBOL(vchi_msg_hold);
*
***********************************************************/
-int32_t vchi_initialise(struct vchiq_instance **instance)
+int vchi_initialise(struct vchiq_instance **instance)
{
return vchiq_initialise(instance);
}
@@ -151,7 +111,7 @@ EXPORT_SYMBOL(vchi_initialise);
* Returns: 0 if successful, failure otherwise
*
***********************************************************/
-int32_t vchi_connect(struct vchiq_instance *instance)
+int vchi_connect(struct vchiq_instance *instance)
{
return vchiq_connect(instance);
}
@@ -168,7 +128,7 @@ EXPORT_SYMBOL(vchi_connect);
* Returns: 0 if successful, failure otherwise
*
***********************************************************/
-int32_t vchi_disconnect(struct vchiq_instance *instance)
+int vchi_disconnect(struct vchiq_instance *instance)
{
return vchiq_shutdown(instance);
}
@@ -184,11 +144,11 @@ EXPORT_SYMBOL(vchi_disconnect);
*
* Description: Routine to open a service
*
- * Returns: int32_t - success == 0
+ * Returns: int - success == 0
*
***********************************************************/
-int32_t vchi_service_open(struct vchiq_instance *instance,
+int vchi_service_open(struct vchiq_instance *instance,
struct vchiq_service_params *params,
unsigned *handle)
{
@@ -196,13 +156,13 @@ int32_t vchi_service_open(struct vchiq_instance *instance,
}
EXPORT_SYMBOL(vchi_service_open);
-int32_t vchi_service_close(unsigned handle)
+int vchi_service_close(unsigned handle)
{
return vchiq_close_service(handle);
}
EXPORT_SYMBOL(vchi_service_close);
-int32_t vchi_get_peer_version(unsigned handle, short *peer_version)
+int vchi_get_peer_version(unsigned handle, short *peer_version)
{
return vchiq_get_peer_version(handle, peer_version);
}
@@ -218,7 +178,7 @@ EXPORT_SYMBOL(vchi_get_peer_version);
* Returns: void
*
***********************************************************/
-int32_t vchi_service_use(unsigned handle)
+int vchi_service_use(unsigned handle)
{
return vchiq_use_service(handle);
}
@@ -234,7 +194,7 @@ EXPORT_SYMBOL(vchi_service_use);
* Returns: void
*
***********************************************************/
-int32_t vchi_service_release(unsigned handle)
+int vchi_service_release(unsigned handle)
{
return vchiq_release_service(handle);
}
--
2.26.2
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