120 lines
4.0 KiB
Diff
120 lines
4.0 KiB
Diff
From 9bbc2dcd43f6107a7e0b1eec16bab10e533329f2 Mon Sep 17 00:00:00 2001
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From: Xiang Xiao <xiaoxiang@xiaomi.com>
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Date: Thu, 3 Jan 2019 14:20:48 +0800
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Subject: [PATCH 09/10] implement
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rproc_virtio_read_config/rproc_virtio_write_config
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so the rpmsg could access the configuration space as needed
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Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
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---
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lib/include/openamp/rpmsg_virtio.h | 14 +++++++++++
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lib/include/openamp/virtio.h | 1 +
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lib/remoteproc/remoteproc_virtio.c | 40 ++++++++++++++++++++++++------
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3 files changed, 47 insertions(+), 8 deletions(-)
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diff --git a/lib/include/openamp/rpmsg_virtio.h open-amp/lib/include/openamp/rpmsg_virtio.h
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index e6e5fa2..4d3093b 100644
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--- a/lib/include/openamp/rpmsg_virtio.h
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+++ open-amp/lib/include/openamp/rpmsg_virtio.h
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@@ -86,6 +86,20 @@ rpmsg_virtio_get_features(struct rpmsg_virtio_device *rvdev)
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return rvdev->vdev->func->get_features(rvdev->vdev);
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}
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+static inline void
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+rpmsg_virtio_read_config(struct rpmsg_virtio_device *rvdev,
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+ uint32_t offset, void *dst, int length)
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+{
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+ rvdev->vdev->func->read_config(rvdev->vdev, offset, dst, length);
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+}
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+
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+static inline void
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+rpmsg_virtio_write_config(struct rpmsg_virtio_device *rvdev,
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+ uint32_t offset, void *dst, int length)
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+{
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+ rvdev->vdev->func->write_config(rvdev->vdev, offset, dst, length);
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+}
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+
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static inline int
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rpmsg_virtio_create_virtqueues(struct rpmsg_virtio_device *rvdev,
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int flags, unsigned int nvqs,
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diff --git a/lib/include/openamp/virtio.h open-amp/lib/include/openamp/virtio.h
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index 55c8ea5..9c8376e 100644
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--- a/lib/include/openamp/virtio.h
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+++ open-amp/lib/include/openamp/virtio.h
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@@ -100,6 +100,7 @@ struct virtio_device {
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virtio_dev_reset_cb reset_cb; /**< user registered device callback */
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const struct virtio_dispatch *func; /**< Virtio dispatch table */
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void *priv; /**< TODO: remove pointer to virtio_device private data */
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+ unsigned int config_len; /**< config space length */
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unsigned int vrings_num; /**< number of vrings */
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struct virtio_vring_info *vrings_info;
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};
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diff --git a/lib/remoteproc/remoteproc_virtio.c open-amp/lib/remoteproc/remoteproc_virtio.c
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index aafc48c..7505f64 100644
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--- a/lib/remoteproc/remoteproc_virtio.c
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+++ open-amp/lib/remoteproc/remoteproc_virtio.c
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@@ -128,20 +128,43 @@ static uint32_t rproc_virtio_negotiate_features(struct virtio_device *vdev,
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static void rproc_virtio_read_config(struct virtio_device *vdev,
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uint32_t offset, void *dst, int length)
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{
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- (void)vdev;
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- (void)offset;
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- (void)dst;
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- (void)length;
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+ struct remoteproc_virtio *rpvdev;
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+ struct fw_rsc_vdev *vdev_rsc;
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+ struct metal_io_region *io;
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+ char *config;
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+
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+ if (offset + length > vdev->config_len || offset + length < length)
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+ return;
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+
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+ rpvdev = metal_container_of(vdev, struct remoteproc_virtio, vdev);
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+ vdev_rsc = rpvdev->vdev_rsc;
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+ config = (char *)(&vdev_rsc->vring[vdev->vrings_num]);
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+ io = rpvdev->vdev_rsc_io;
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+ metal_io_block_read(io,
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+ metal_io_virt_to_offset(io, config + offset),
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+ dst, length);
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}
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#ifndef VIRTIO_SLAVE_ONLY
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static void rproc_virtio_write_config(struct virtio_device *vdev,
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uint32_t offset, void *src, int length)
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{
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- (void)vdev;
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- (void)offset;
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- (void)src;
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- (void)length;
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+ struct remoteproc_virtio *rpvdev;
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+ struct fw_rsc_vdev *vdev_rsc;
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+ struct metal_io_region *io;
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+ char *config;
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+
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+ if (offset + length > vdev->config_len || offset + length < length)
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+ return;
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+
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+ rpvdev = metal_container_of(vdev, struct remoteproc_virtio, vdev);
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+ vdev_rsc = rpvdev->vdev_rsc;
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+ config = (char *)(&vdev_rsc->vring[vdev->vrings_num]);
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+ io = rpvdev->vdev_rsc_io;
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+ metal_io_block_write(io,
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+ metal_io_virt_to_offset(io, config + offset),
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+ src, length);
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+ rpvdev->notify(rpvdev->priv, vdev->notifyid);
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}
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static void rproc_virtio_reset_device(struct virtio_device *vdev)
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@@ -222,6 +245,7 @@ rproc_virtio_create_vdev(unsigned int role, unsigned int notifyid,
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vdev->notifyid = notifyid;
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vdev->role = role;
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vdev->reset_cb = rst_cb;
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+ vdev->config_len = vdev_rsc->config_len;
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vdev->vrings_num = num_vrings;
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vdev->func = &remoteproc_virtio_dispatch_funcs;
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--
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2.17.1
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