1 files changed, 0 insertions, 163 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0277-staging-vc04_services-Use-vc-sm-cma-to-support-zero-.patch b/target/linux/brcm2708/patches-4.19/950-0277-staging-vc04_services-Use-vc-sm-cma-to-support-zero-.patch
deleted file mode 100644
index 5d4c7a53c3..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0277-staging-vc04_services-Use-vc-sm-cma-to-support-zero-.patch
+++ /dev/null
@@ -1,163 +0,0 @@
-From d3c99e301ac57e6c1a5e13b341baacd7182a5763 Mon Sep 17 00:00:00 2001
-From: Dave Stevenson <dave.stevenson@raspberrypi.org>
-Date: Tue, 25 Sep 2018 16:07:55 +0100
-Subject: [PATCH 277/703] staging: vc04_services: Use vc-sm-cma to support zero
- copy
-
-With the vc-sm-cma driver we can support zero copy of buffers between
-the kernel and VPU. Add this support to vchiq-mmal.
-
-Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
----
- .../staging/vc04_services/vchiq-mmal/Kconfig  |  1 +
- .../vc04_services/vchiq-mmal/mmal-common.h    |  4 ++
- .../vc04_services/vchiq-mmal/mmal-vchiq.c     | 66 ++++++++++++++++++-
- .../vc04_services/vchiq-mmal/mmal-vchiq.h     |  1 +
- 4 files changed, 70 insertions(+), 2 deletions(-)
-
---- a/drivers/staging/vc04_services/vchiq-mmal/Kconfig
-+++ b/drivers/staging/vc04_services/vchiq-mmal/Kconfig
-@@ -2,6 +2,7 @@ config BCM2835_VCHIQ_MMAL
- 	tristate "BCM2835 MMAL VCHIQ service"
- 	depends on (ARCH_BCM2835 || COMPILE_TEST)
- 	select BCM2835_VCHIQ
-+	select BCM_VC_SM_CMA
- 	help
- 	  Enables the MMAL API over VCHIQ as used for the
- 	  majority of the multimedia services on VideoCore.
---- a/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
-+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
-@@ -51,6 +51,10 @@ struct mmal_buffer {
- 
- 	struct mmal_msg_context *msg_context;
- 
-+	struct dma_buf *dma_buf;/* Exported dmabuf fd from videobuf2 */
-+	int vcsm_handle;	/* VCSM handle having imported the dmabuf */
-+	u32 vc_handle;		/* VC handle to that dmabuf */
-+
- 	u32 cmd;		/* MMAL command. 0=data. */
- 	unsigned long length;
- 	u32 mmal_flags;
---- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
-+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
-@@ -27,9 +27,12 @@
- #include <media/videobuf2-vmalloc.h>
- 
- #include "mmal-common.h"
-+#include "mmal-parameters.h"
- #include "mmal-vchiq.h"
- #include "mmal-msg.h"
- 
-+#include "vc-sm-cma/vc_sm_knl.h"
-+
- #define USE_VCHIQ_ARM
- #include "interface/vchi/vchi.h"
- 
-@@ -425,8 +428,13 @@ buffer_from_host(struct vchiq_mmal_insta
- 
- 	/* buffer header */
- 	m.u.buffer_from_host.buffer_header.cmd = 0;
--	m.u.buffer_from_host.buffer_header.data =
--		(u32)(unsigned long)buf->buffer;
-+	if (port->zero_copy) {
-+		m.u.buffer_from_host.buffer_header.data = buf->vc_handle;
-+	} else {
-+		m.u.buffer_from_host.buffer_header.data =
-+			(u32)(unsigned long)buf->buffer;
-+	}
-+
- 	m.u.buffer_from_host.buffer_header.alloc_size = buf->buffer_size;
- 	if (port->type == MMAL_PORT_TYPE_OUTPUT) {
- 		m.u.buffer_from_host.buffer_header.length = 0;
-@@ -591,6 +599,22 @@ static void buffer_to_host_cb(struct vch
- 
- 		msg_context->u.bulk.status = msg->h.status;
- 
-+	} else if (msg->u.buffer_from_host.is_zero_copy) {
-+		/*
-+		 * Zero copy buffer, so nothing to do.
-+		 * Copy buffer info and make callback.
-+		 */
-+		msg_context->u.bulk.buffer_used =
-+				msg->u.buffer_from_host.buffer_header.length;
-+		msg_context->u.bulk.mmal_flags =
-+				msg->u.buffer_from_host.buffer_header.flags;
-+		msg_context->u.bulk.dts =
-+				msg->u.buffer_from_host.buffer_header.dts;
-+		msg_context->u.bulk.pts =
-+				msg->u.buffer_from_host.buffer_header.pts;
-+		msg_context->u.bulk.cmd =
-+				msg->u.buffer_from_host.buffer_header.cmd;
-+
- 	} else if (msg->u.buffer_from_host.buffer_header.length == 0) {
- 		/* empty buffer */
- 		if (msg->u.buffer_from_host.buffer_header.flags &
-@@ -1538,6 +1562,9 @@ int vchiq_mmal_port_parameter_set(struct
- 
- 	mutex_unlock(&instance->vchiq_mutex);
- 
-+	if (parameter == MMAL_PARAMETER_ZERO_COPY && !ret)
-+		port->zero_copy = !!(*(bool *)value);
-+
- 	return ret;
- }
- EXPORT_SYMBOL_GPL(vchiq_mmal_port_parameter_set);
-@@ -1706,6 +1733,31 @@ int vchiq_mmal_submit_buffer(struct vchi
- 	unsigned long flags = 0;
- 	int ret;
- 
-+	/*
-+	 * We really want to do this in mmal_vchi_buffer_init but can't as
-+	 * videobuf2 won't let us have the dmabuf there.
-+	 */
-+	if (port->zero_copy && buffer->dma_buf && !buffer->vcsm_handle) {
-+		pr_debug("%s: import dmabuf %p\n", __func__, buffer->dma_buf);
-+		ret = vc_sm_cma_import_dmabuf(buffer->dma_buf,
-+					      &buffer->vcsm_handle);
-+		if (ret) {
-+			pr_err("%s: vc_sm_import_dmabuf_fd failed, ret %d\n",
-+			       __func__, ret);
-+			return ret;
-+		}
-+
-+		buffer->vc_handle = vc_sm_cma_int_handle(buffer->vcsm_handle);
-+		if (!buffer->vc_handle) {
-+			pr_err("%s: vc_sm_int_handle failed %d\n",
-+			       __func__, ret);
-+			vc_sm_cma_free(buffer->vcsm_handle);
-+			return ret;
-+		}
-+		pr_debug("%s: import dmabuf %p - got vc handle %08X\n",
-+			 __func__, buffer->dma_buf, buffer->vc_handle);
-+	}
-+
- 	ret = buffer_from_host(instance, port, buffer);
- 	if (ret == -EINVAL) {
- 		/* Port is disabled. Queue for when it is enabled. */
-@@ -1739,6 +1791,16 @@ int mmal_vchi_buffer_cleanup(struct mmal
- 		release_msg_context(msg_context);
- 	buf->msg_context = NULL;
- 
-+	if (buf->vcsm_handle) {
-+		int ret;
-+
-+		pr_debug("%s: vc_sm_cma_free on handle %08X\n", __func__,
-+			 buf->vcsm_handle);
-+		ret = vc_sm_cma_free(buf->vcsm_handle);
-+		if (ret)
-+			pr_err("%s: vcsm_free failed, ret %d\n", __func__, ret);
-+		buf->vcsm_handle = 0;
-+	}
- 	return 0;
- }
- EXPORT_SYMBOL_GPL(mmal_vchi_buffer_cleanup);
---- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.h
-+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.h
-@@ -49,6 +49,7 @@ typedef void (*vchiq_mmal_buffer_cb)(
- 
- struct vchiq_mmal_port {
- 	u32 enabled:1;
-+	u32 zero_copy:1;
- 	u32 handle;
- 	u32 type; /* port type, cached to use on port info set */
- 	u32 index; /* port index, cached to use on port info set */