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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-12-23 17:25:19 +0100 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-12-24 18:49:49 +0100 |
commit | c2308a7e4adbb2acc8ff149f91d1ca46801c135e (patch) | |
tree | ffc720dc7c05c331d6569fc3c2f0772fb375e419 /target/linux/brcm2708/patches-4.19/950-0244-staging-vc04_services-Use-vc-sm-cma-to-support-zero-.patch | |
parent | 67dcc43f3a22dc3a7ac07a7065971b426feeb043 (diff) | |
download | upstream-c2308a7e4adbb2acc8ff149f91d1ca46801c135e.tar.gz upstream-c2308a7e4adbb2acc8ff149f91d1ca46801c135e.tar.bz2 upstream-c2308a7e4adbb2acc8ff149f91d1ca46801c135e.zip |
brcm2708: update to latest patches from RPi Foundation
Also removes reverted patches.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0244-staging-vc04_services-Use-vc-sm-cma-to-support-zero-.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0244-staging-vc04_services-Use-vc-sm-cma-to-support-zero-.patch | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0244-staging-vc04_services-Use-vc-sm-cma-to-support-zero-.patch b/target/linux/brcm2708/patches-4.19/950-0244-staging-vc04_services-Use-vc-sm-cma-to-support-zero-.patch new file mode 100644 index 0000000000..8c69f65cc2 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0244-staging-vc04_services-Use-vc-sm-cma-to-support-zero-.patch @@ -0,0 +1,163 @@ +From bcb0dccc1f02ed3dd01834ca0e35c4043df8988e 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] 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 */ |