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incubator-nuttx/drivers/rptun/rptun.c

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/****************************************************************************
* drivers/rptun/rptun.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <inttypes.h>
#include <stdio.h>
#include <sys/param.h>
#include <fcntl.h>
#include <nuttx/arch.h>
#include <nuttx/board.h>
#include <nuttx/kmalloc.h>
#include <nuttx/kthread.h>
#include <nuttx/mutex.h>
#include <nuttx/semaphore.h>
#include <nuttx/rptun/openamp.h>
#include <nuttx/rptun/rptun.h>
#include <nuttx/power/pm.h>
#include <nuttx/wqueue.h>
#include <metal/utilities.h>
#include "rptun.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef ALIGN_UP
# define ALIGN_UP(s, a) (((s) + (a) - 1) & ~((a) - 1))
#endif
#define RPTUNIOC_NONE 0
/****************************************************************************
* Private Types
****************************************************************************/
struct rptun_priv_s
{
FAR struct rptun_dev_s *dev;
struct remoteproc rproc;
struct rpmsg_virtio_device rvdev;
struct rpmsg_virtio_shm_pool pool[2];
struct metal_list bind;
rmutex_t lock;
struct metal_list node;
sem_t semtx;
unsigned long cmd;
#ifdef CONFIG_RPTUN_WORKQUEUE
struct work_s work;
#else
sem_t semrx;
pid_t tid;
#endif
#ifdef CONFIG_RPTUN_PM
bool stay;
#endif
#ifdef CONFIG_RPTUN_PING
struct rpmsg_endpoint ping;
#endif
};
struct rptun_bind_s
{
char name[RPMSG_NAME_SIZE];
uint32_t dest;
struct metal_list node;
};
struct rptun_cb_s
{
FAR void *priv;
rpmsg_dev_cb_t device_created;
rpmsg_dev_cb_t device_destroy;
rpmsg_match_cb_t ns_match;
rpmsg_bind_cb_t ns_bind;
struct metal_list node;
};
struct rptun_store_s
{
struct file file;
FAR char *buf;
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static FAR struct remoteproc *rptun_init(FAR struct remoteproc *rproc,
FAR const struct remoteproc_ops *ops,
FAR void *arg);
static void rptun_remove(FAR struct remoteproc *rproc);
static int rptun_config(struct remoteproc *rproc, void *data);
static int rptun_start(FAR struct remoteproc *rproc);
static int rptun_stop(FAR struct remoteproc *rproc);
static int rptun_notify(FAR struct remoteproc *rproc, uint32_t id);
static FAR struct remoteproc_mem *
rptun_get_mem(FAR struct remoteproc *rproc,
FAR const char *name,
metal_phys_addr_t pa,
metal_phys_addr_t da,
FAR void *va, size_t size,
FAR struct remoteproc_mem *buf);
static int rptun_notify_wait(FAR struct remoteproc *rproc, uint32_t id);
static void rptun_ns_bind(FAR struct rpmsg_device *rdev,
FAR const char *name, uint32_t dest);
static int rptun_dev_start(FAR struct remoteproc *rproc);
static int rptun_dev_stop(FAR struct remoteproc *rproc);
static int rptun_dev_ioctl(FAR struct file *filep, int cmd,
unsigned long arg);
#ifdef CONFIG_RPTUN_LOADER
static int rptun_store_open(FAR void *store_, FAR const char *path,
FAR const void **img_data);
static void rptun_store_close(FAR void *store_);
static int rptun_store_load(FAR void *store_, size_t offset,
size_t size, FAR const void **data,
metal_phys_addr_t pa,
FAR struct metal_io_region *io,
char is_blocking);
#endif
static metal_phys_addr_t rptun_pa_to_da(FAR struct rptun_dev_s *dev,
metal_phys_addr_t pa);
static metal_phys_addr_t rptun_da_to_pa(FAR struct rptun_dev_s *dev,
metal_phys_addr_t da);
/****************************************************************************
* Private Data
****************************************************************************/
static const struct remoteproc_ops g_rptun_ops =
{
.init = rptun_init,
.remove = rptun_remove,
.config = rptun_config,
.start = rptun_start,
.stop = rptun_stop,
.notify = rptun_notify,
.get_mem = rptun_get_mem,
.notify_wait = rptun_notify_wait,
};
static const struct file_operations g_rptun_devops =
{
NULL, /* open */
NULL, /* close */
NULL, /* read */
NULL, /* write */
NULL, /* seek */
rptun_dev_ioctl, /* ioctl */
};
#ifdef CONFIG_RPTUN_LOADER
static const struct image_store_ops g_rptun_storeops =
{
.open = rptun_store_open,
.close = rptun_store_close,
.load = rptun_store_load,
.features = SUPPORT_SEEK,
};
#endif
static METAL_DECLARE_LIST(g_rptun_cb);
static METAL_DECLARE_LIST(g_rptun_priv);
static rmutex_t g_rptun_lockcb = NXRMUTEX_INITIALIZER;
/****************************************************************************
* Private Functions
****************************************************************************/
#ifdef CONFIG_RPTUN_PM
static inline void rptun_pm_action(FAR struct rptun_priv_s *priv,
bool stay)
{
irqstate_t flags;
flags = enter_critical_section();
if (stay && !priv->stay)
{
pm_stay(PM_IDLE_DOMAIN, PM_IDLE);
priv->stay = true;
}
if (!stay && priv->stay && !rptun_buffer_nused(&priv->rvdev, false))
{
pm_relax(PM_IDLE_DOMAIN, PM_IDLE);
priv->stay = false;
}
leave_critical_section(flags);
}
#else
# define rptun_pm_action(priv, stay)
#endif
static void rptun_worker(FAR void *arg)
{
FAR struct rptun_priv_s *priv = arg;
switch (priv->cmd)
{
case RPTUNIOC_START:
if (priv->rproc.state == RPROC_OFFLINE)
{
rptun_dev_start(&priv->rproc);
}
break;
case RPTUNIOC_STOP:
if (priv->rproc.state != RPROC_OFFLINE)
{
rptun_dev_stop(&priv->rproc);
}
break;
}
priv->cmd = RPTUNIOC_NONE;
remoteproc_get_notification(&priv->rproc, RPTUN_NOTIFY_ALL);
}
#ifdef CONFIG_RPTUN_WORKQUEUE
static void rptun_wakeup_rx(FAR struct rptun_priv_s *priv)
{
work_queue(HPWORK, &priv->work, rptun_worker, priv, 0);
}
static void rptun_in_recursive(int tid, FAR void *arg)
{
*((FAR bool *)arg) = (nxsched_gettid() == tid);
}
static bool rptun_is_recursive(FAR struct rptun_priv_s *priv)
{
bool in = false;
work_foreach(HPWORK, rptun_in_recursive, &in);
return in;
}
#else
static int rptun_thread(int argc, FAR char *argv[])
{
FAR struct rptun_priv_s *priv;
priv = (FAR struct rptun_priv_s *)((uintptr_t)strtoul(argv[2], NULL, 16));
priv->tid = nxsched_gettid();
while (1)
{
nxsem_wait_uninterruptible(&priv->semrx);
rptun_worker(priv);
}
return 0;
}
static void rptun_wakeup_rx(FAR struct rptun_priv_s *priv)
{
int semcount;
nxsem_get_value(&priv->semrx, &semcount);
if (semcount < 1)
{
nxsem_post(&priv->semrx);
}
}
static bool rptun_is_recursive(FAR struct rptun_priv_s *priv)
{
return nxsched_gettid() == priv->tid;
}
#endif
static void rptun_wakeup_tx(FAR struct rptun_priv_s *priv)
{
int semcount;
nxsem_get_value(&priv->semtx, &semcount);
while (semcount++ < 1)
{
nxsem_post(&priv->semtx);
}
}
static int rptun_callback(FAR void *arg, uint32_t vqid)
{
FAR struct rptun_priv_s *priv = arg;
FAR struct rpmsg_virtio_device *rvdev = &priv->rvdev;
FAR struct virtio_device *vdev = rvdev->vdev;
FAR struct virtqueue *svq = rvdev->svq;
FAR struct virtqueue *rvq = rvdev->rvq;
if (vqid == RPTUN_NOTIFY_ALL ||
vqid == vdev->vrings_info[rvq->vq_queue_index].notifyid)
{
if (rptun_buffer_nused(&priv->rvdev, true))
{
rptun_wakeup_rx(priv);
}
}
if (vqid == RPTUN_NOTIFY_ALL ||
vqid == vdev->vrings_info[svq->vq_queue_index].notifyid)
{
rptun_wakeup_tx(priv);
rptun_pm_action(priv, false);
}
return OK;
}
static FAR struct remoteproc *rptun_init(FAR struct remoteproc *rproc,
FAR const struct remoteproc_ops *ops,
FAR void *arg)
{
rproc->ops = ops;
rproc->priv = arg;
return rproc;
}
static void rptun_remove(FAR struct remoteproc *rproc)
{
rproc->priv = NULL;
}
static int rptun_config(struct remoteproc *rproc, void *data)
{
struct rptun_priv_s *priv = rproc->priv;
if (RPTUN_IS_MASTER(priv->dev))
{
return RPTUN_CONFIG(priv->dev, data);
}
return 0;
}
static int rptun_start(FAR struct remoteproc *rproc)
{
FAR struct rptun_priv_s *priv = rproc->priv;
if (RPTUN_IS_MASTER(priv->dev))
{
return RPTUN_START(priv->dev);
}
return 0;
}
static int rptun_stop(FAR struct remoteproc *rproc)
{
FAR struct rptun_priv_s *priv = rproc->priv;
if (RPTUN_IS_MASTER(priv->dev))
{
return RPTUN_STOP(priv->dev);
}
return 0;
}
static int rptun_notify(FAR struct remoteproc *rproc, uint32_t id)
{
FAR struct rptun_priv_s *priv = rproc->priv;
FAR struct rpmsg_virtio_device *rvdev = &priv->rvdev;
FAR struct virtqueue *vq = rvdev->svq;
if (rvdev->vdev && vq &&
rvdev->vdev->vrings_info[vq->vq_queue_index].notifyid == id)
{
rptun_pm_action(priv, true);
}
RPTUN_NOTIFY(priv->dev, id);
return 0;
}
static FAR struct remoteproc_mem *
rptun_get_mem(FAR struct remoteproc *rproc,
FAR const char *name,
metal_phys_addr_t pa,
metal_phys_addr_t da,
FAR void *va, size_t size,
FAR struct remoteproc_mem *buf)
{
FAR struct rptun_priv_s *priv = rproc->priv;
metal_list_init(&buf->node);
strlcpy(buf->name, name ? name : "", RPROC_MAX_NAME_LEN);
buf->io = metal_io_get_region();
buf->size = size;
if (pa != METAL_BAD_PHYS)
{
buf->pa = pa;
buf->da = rptun_pa_to_da(priv->dev, pa);
}
else if (da != METAL_BAD_PHYS)
{
buf->pa = rptun_da_to_pa(priv->dev, da);
buf->da = da;
}
else
{
buf->pa = metal_io_virt_to_phys(buf->io, va);
buf->da = rptun_pa_to_da(priv->dev, buf->pa);
}
if (buf->pa == METAL_BAD_PHYS || buf->da == METAL_BAD_PHYS)
{
return NULL;
}
return buf;
}
static int rptun_notify_wait(FAR struct remoteproc *rproc, uint32_t id)
{
FAR struct rptun_priv_s *priv = rproc->priv;
if (!rptun_is_recursive(priv))
{
return -EAGAIN;
}
/* Wait to wakeup */
nxsem_wait(&priv->semtx);
rptun_worker(priv);
return 0;
}
static void *rptun_get_priv_by_rdev(FAR struct rpmsg_device *rdev)
{
struct rpmsg_virtio_device *rvdev;
struct virtio_device *vdev;
struct remoteproc_virtio *rpvdev;
struct remoteproc *rproc;
if (!rdev)
{
return NULL;
}
rvdev = metal_container_of(rdev, struct rpmsg_virtio_device, rdev);
vdev = rvdev->vdev;
if (!vdev)
{
return NULL;
}
rpvdev = metal_container_of(vdev, struct remoteproc_virtio, vdev);
rproc = rpvdev->priv;
if (!rproc)
{
return NULL;
}
return rproc->priv;
}
static void rptun_ns_bind(FAR struct rpmsg_device *rdev,
FAR const char *name, uint32_t dest)
{
FAR struct rptun_priv_s *priv = rptun_get_priv_by_rdev(rdev);
FAR struct rptun_bind_s *bind;
FAR struct metal_list *node;
nxrmutex_lock(&g_rptun_lockcb);
metal_list_for_each(&g_rptun_cb, node)
{
FAR struct rptun_cb_s *cb;
cb = metal_container_of(node, struct rptun_cb_s, node);
if (cb->ns_match && cb->ns_match(rdev, cb->priv, name, dest))
{
rpmsg_bind_cb_t ns_bind = cb->ns_bind;
FAR void *cb_priv = cb->priv;
nxrmutex_unlock(&g_rptun_lockcb);
DEBUGASSERT(ns_bind != NULL);
ns_bind(rdev, cb_priv, name, dest);
return;
}
}
nxrmutex_unlock(&g_rptun_lockcb);
bind = kmm_malloc(sizeof(struct rptun_bind_s));
if (bind == NULL)
{
return;
}
bind->dest = dest;
strlcpy(bind->name, name, RPMSG_NAME_SIZE);
nxrmutex_lock(&priv->lock);
metal_list_add_tail(&priv->bind, &bind->node);
nxrmutex_unlock(&priv->lock);
}
static void rptun_ns_unbind(FAR struct rpmsg_device *rdev,
FAR const char *name, uint32_t dest)
{
FAR struct rptun_priv_s *priv = rptun_get_priv_by_rdev(rdev);
FAR struct metal_list *node;
nxrmutex_lock(&priv->lock);
metal_list_for_each(&priv->bind, node)
{
struct rptun_bind_s *bind;
bind = metal_container_of(node, struct rptun_bind_s, node);
if (bind->dest == dest && !strncmp(bind->name, name, RPMSG_NAME_SIZE))
{
metal_list_del(node);
kmm_free(bind);
break;
}
}
nxrmutex_unlock(&priv->lock);
}
static int rptun_dev_start(FAR struct remoteproc *rproc)
{
FAR struct rptun_priv_s *priv = rproc->priv;
FAR struct virtio_device *vdev;
FAR struct rptun_rsc_s *rsc;
FAR struct metal_list *node;
FAR struct rptun_cb_s *cb;
unsigned int role = RPMSG_REMOTE;
int ret;
ret = remoteproc_config(rproc, NULL);
if (ret)
{
return ret;
}
#ifdef CONFIG_RPTUN_LOADER
if (RPTUN_GET_FIRMWARE(priv->dev))
{
struct rptun_store_s store =
{
0
};
ret = remoteproc_load(rproc, RPTUN_GET_FIRMWARE(priv->dev),
&store, &g_rptun_storeops, NULL);
if (ret)
{
return ret;
}
rsc = rproc->rsc_table;
}
else
#endif
{
rsc = RPTUN_GET_RESOURCE(priv->dev);
if (!rsc)
{
return -EINVAL;
}
ret = remoteproc_set_rsc_table(rproc, (struct resource_table *)rsc,
sizeof(struct rptun_rsc_s));
if (ret)
{
return ret;
}
}
/* Update resource table on MASTER side */
if (RPTUN_IS_MASTER(priv->dev))
{
uint32_t tbsz;
uint32_t v0sz;
uint32_t v1sz;
uint32_t shbufsz;
metal_phys_addr_t da0;
metal_phys_addr_t da1;
uint32_t align0;
uint32_t align1;
FAR void *va0;
FAR void *va1;
FAR void *shbuf;
FAR struct metal_io_region *io;
metal_phys_addr_t pa0;
metal_phys_addr_t pa1;
align0 = rsc->rpmsg_vring0.align;
align1 = rsc->rpmsg_vring1.align;
v0sz = ALIGN_UP(vring_size(rsc->rpmsg_vring0.num, align0), align0);
v1sz = ALIGN_UP(vring_size(rsc->rpmsg_vring1.num, align1), align1);
if (rsc->rpmsg_vring0.da == 0 || rsc->rpmsg_vring1.da == 0)
{
tbsz = ALIGN_UP(sizeof(struct rptun_rsc_s), MAX(align0, align1));
va0 = (FAR char *)rsc + tbsz;
va1 = (FAR char *)rsc + tbsz + v0sz;
io = metal_io_get_region();
pa0 = metal_io_virt_to_phys(io, va0);
pa1 = metal_io_virt_to_phys(io, va1);
da0 = da1 = METAL_BAD_PHYS;
remoteproc_mmap(rproc, &pa0, &da0, v0sz, 0, NULL);
remoteproc_mmap(rproc, &pa1, &da1, v1sz, 0, NULL);
rsc->rpmsg_vring0.da = da0;
rsc->rpmsg_vring1.da = da1;
shbuf = (FAR char *)rsc + tbsz + v0sz + v1sz;
shbufsz = rsc->config.r2h_buf_size * rsc->rpmsg_vring0.num +
rsc->config.h2r_buf_size * rsc->rpmsg_vring1.num;
rpmsg_virtio_init_shm_pool(priv->pool, shbuf, shbufsz);
}
else
{
da0 = rsc->rpmsg_vring0.da;
shbuf = (FAR char *)remoteproc_mmap(rproc, NULL, &da0,
v0sz, 0, NULL) + v0sz;
shbufsz = rsc->config.r2h_buf_size * rsc->rpmsg_vring0.num;
rpmsg_virtio_init_shm_pool(&priv->pool[0], shbuf, shbufsz);
da1 = rsc->rpmsg_vring1.da;
shbuf = (FAR char *)remoteproc_mmap(rproc, NULL, &da1,
v1sz, 0, NULL) + v1sz;
shbufsz = rsc->config.h2r_buf_size * rsc->rpmsg_vring1.num;
rpmsg_virtio_init_shm_pool(&priv->pool[1], shbuf, shbufsz);
}
role = RPMSG_HOST;
}
/* Remote proc create */
vdev = remoteproc_create_virtio(rproc, 0, role, NULL);
if (!vdev)
{
return -ENOMEM;
}
if (priv->pool[1].base)
{
struct rpmsg_virtio_config config =
{
RPMSG_BUFFER_SIZE,
RPMSG_BUFFER_SIZE,
true,
};
ret = rpmsg_init_vdev_with_config(&priv->rvdev, vdev, rptun_ns_bind,
metal_io_get_region(),
priv->pool,
&config);
}
else
{
ret = rpmsg_init_vdev(&priv->rvdev, vdev, rptun_ns_bind,
metal_io_get_region(), priv->pool);
}
if (ret)
{
remoteproc_remove_virtio(rproc, vdev);
return ret;
}
priv->rvdev.rdev.ns_unbind_cb = rptun_ns_unbind;
/* Remote proc start */
ret = remoteproc_start(rproc);
if (ret)
{
remoteproc_remove_virtio(rproc, vdev);
return ret;
}
/* Register callback to mbox for receiving remote message */
RPTUN_REGISTER_CALLBACK(priv->dev, rptun_callback, priv);
/* Broadcast device_created to all registers */
nxrmutex_lock(&g_rptun_lockcb);
metal_list_for_each(&g_rptun_cb, node)
{
cb = metal_container_of(node, struct rptun_cb_s, node);
if (cb->device_created)
{
cb->device_created(&priv->rvdev.rdev, cb->priv);
}
}
nxrmutex_unlock(&g_rptun_lockcb);
virtqueue_enable_cb(priv->rvdev.svq);
#ifdef CONFIG_RPTUN_PING
rptun_ping_init(&priv->rvdev, &priv->ping);
#endif
return 0;
}
static int rptun_dev_stop(FAR struct remoteproc *rproc)
{
FAR struct rptun_priv_s *priv = rproc->priv;
FAR struct metal_list *node;
FAR struct rptun_cb_s *cb;
#ifdef CONFIG_RPTUN_PING
rptun_ping_deinit(&priv->ping);
#endif
/* Unregister callback from mbox */
RPTUN_UNREGISTER_CALLBACK(priv->dev);
/* Remove priv from list */
nxrmutex_lock(&g_rptun_lockcb);
/* Broadcast device_destroy to all registers */
metal_list_for_each(&g_rptun_cb, node)
{
cb = metal_container_of(node, struct rptun_cb_s, node);
if (cb->device_destroy)
{
cb->device_destroy(&priv->rvdev.rdev, cb->priv);
}
}
nxrmutex_unlock(&g_rptun_lockcb);
/* Remote proc stop and shutdown */
remoteproc_shutdown(rproc);
/* Remote proc remove */
rpmsg_deinit_vdev(&priv->rvdev);
remoteproc_remove_virtio(rproc, priv->rvdev.vdev);
return 0;
}
static int rptun_do_ioctl(FAR struct rptun_priv_s *priv, int cmd,
unsigned long arg)
{
int ret = OK;
switch (cmd)
{
case RPTUNIOC_START:
case RPTUNIOC_STOP:
priv->cmd = cmd;
rptun_wakeup_rx(priv);
break;
case RPTUNIOC_RESET:
RPTUN_RESET(priv->dev, arg);
break;
case RPTUNIOC_PANIC:
RPTUN_PANIC(priv->dev);
break;
case RPTUNIOC_DUMP:
rptun_dump(&priv->rvdev);
break;
#ifdef CONFIG_RPTUN_PING
case RPTUNIOC_PING:
rptun_ping(&priv->ping, (FAR const struct rptun_ping_s *)arg);
break;
#endif
default:
ret = -ENOTTY;
break;
}
return ret;
}
static int rptun_dev_ioctl(FAR struct file *filep, int cmd,
unsigned long arg)
{
FAR struct inode *inode = filep->f_inode;
return rptun_do_ioctl(inode->i_private, cmd, arg);
}
#ifdef CONFIG_RPTUN_LOADER
static int rptun_store_open(FAR void *store_,
FAR const char *path,
FAR const void **img_data)
{
FAR struct rptun_store_s *store = store_;
int len = 0x100;
int ret;
ret = file_open(&store->file, path, O_RDONLY);
if (ret < 0)
{
return ret;
}
store->buf = kmm_malloc(len);
if (!store->buf)
{
file_close(&store->file);
return -ENOMEM;
}
*img_data = store->buf;
return file_read(&store->file, store->buf, len);
}
static void rptun_store_close(FAR void *store_)
{
FAR struct rptun_store_s *store = store_;
kmm_free(store->buf);
file_close(&store->file);
}
static int rptun_store_load(FAR void *store_, size_t offset,
size_t size, FAR const void **data,
metal_phys_addr_t pa,
FAR struct metal_io_region *io,
char is_blocking)
{
FAR struct rptun_store_s *store = store_;
FAR char *tmp;
if (pa == METAL_BAD_PHYS)
{
tmp = kmm_realloc(store->buf, size);
if (!tmp)
{
return -ENOMEM;
}
store->buf = tmp;
*data = tmp;
}
else
{
tmp = metal_io_phys_to_virt(io, pa);
if (!tmp)
{
return -EINVAL;
}
}
file_seek(&store->file, offset, SEEK_SET);
return file_read(&store->file, tmp, size);
}
#endif
static metal_phys_addr_t rptun_pa_to_da(FAR struct rptun_dev_s *dev,
metal_phys_addr_t pa)
{
FAR const struct rptun_addrenv_s *addrenv;
uint32_t i;
addrenv = RPTUN_GET_ADDRENV(dev);
if (!addrenv)
{
return pa;
}
for (i = 0; addrenv[i].size; i++)
{
if (pa - addrenv[i].pa < addrenv[i].size)
{
return addrenv[i].da + (pa - addrenv[i].pa);
}
}
return pa;
}
static metal_phys_addr_t rptun_da_to_pa(FAR struct rptun_dev_s *dev,
metal_phys_addr_t da)
{
FAR const struct rptun_addrenv_s *addrenv;
uint32_t i;
addrenv = RPTUN_GET_ADDRENV(dev);
if (!addrenv)
{
return da;
}
for (i = 0; addrenv[i].size; i++)
{
if (da - addrenv[i].da < addrenv[i].size)
{
return addrenv[i].pa + (da - addrenv[i].da);
}
}
return da;
}
static int rptun_ioctl_foreach(FAR const char *cpuname, int cmd,
unsigned long value)
{
FAR struct metal_list *node;
int ret = OK;
metal_list_for_each(&g_rptun_priv, node)
{
FAR struct rptun_priv_s *priv;
priv = metal_container_of(node, struct rptun_priv_s, node);
if (!cpuname || !strcmp(RPTUN_GET_CPUNAME(priv->dev), cpuname))
{
ret = rptun_do_ioctl(priv, cmd, value);
if (ret < 0)
break;
}
}
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
int rpmsg_wait(FAR struct rpmsg_endpoint *ept, FAR sem_t *sem)
{
FAR struct rptun_priv_s *priv;
int ret;
if (!ept || !sem)
{
return -EINVAL;
}
priv = rptun_get_priv_by_rdev(ept->rdev);
if (!priv || !rptun_is_recursive(priv))
{
return nxsem_wait_uninterruptible(sem);
}
while (1)
{
ret = nxsem_trywait(sem);
if (ret >= 0)
{
break;
}
nxsem_wait(&priv->semtx);
rptun_worker(priv);
}
return ret;
}
int rpmsg_post(FAR struct rpmsg_endpoint *ept, FAR sem_t *sem)
{
FAR struct rptun_priv_s *priv;
int semcount;
int ret;
if (!ept || !sem)
{
return -EINVAL;
}
nxsem_get_value(sem, &semcount);
ret = nxsem_post(sem);
priv = rptun_get_priv_by_rdev(ept->rdev);
if (priv && semcount >= 0)
{
rptun_wakeup_tx(priv);
}
return ret;
}
FAR const char *rpmsg_get_cpuname(FAR struct rpmsg_device *rdev)
{
FAR struct rptun_priv_s *priv = rptun_get_priv_by_rdev(rdev);
return RPTUN_GET_CPUNAME(priv->dev);
}
int rpmsg_register_callback(FAR void *priv_,
rpmsg_dev_cb_t device_created,
rpmsg_dev_cb_t device_destroy,
rpmsg_match_cb_t ns_match,
rpmsg_bind_cb_t ns_bind)
{
FAR struct metal_list *node;
FAR struct metal_list *bnode;
FAR struct rptun_cb_s *cb;
cb = kmm_zalloc(sizeof(struct rptun_cb_s));
if (!cb)
{
return -ENOMEM;
}
cb->priv = priv_;
cb->device_created = device_created;
cb->device_destroy = device_destroy;
cb->ns_match = ns_match;
cb->ns_bind = ns_bind;
nxrmutex_lock(&g_rptun_lockcb);
metal_list_for_each(&g_rptun_priv, node)
{
FAR struct rptun_priv_s *priv;
priv = metal_container_of(node, struct rptun_priv_s, node);
if (priv->rproc.state != RPROC_RUNNING)
{
continue;
}
if (device_created)
{
device_created(&priv->rvdev.rdev, priv_);
}
if (ns_bind == NULL)
{
continue;
}
DEBUGASSERT(ns_match != NULL);
again:
nxrmutex_lock(&priv->lock);
metal_list_for_each(&priv->bind, bnode)
{
FAR struct rptun_bind_s *bind;
bind = metal_container_of(bnode, struct rptun_bind_s, node);
if (ns_match(&priv->rvdev.rdev, priv_, bind->name, bind->dest))
{
metal_list_del(bnode);
nxrmutex_unlock(&priv->lock);
ns_bind(&priv->rvdev.rdev, priv_, bind->name, bind->dest);
kmm_free(bind);
goto again;
}
}
nxrmutex_unlock(&priv->lock);
}
metal_list_add_tail(&g_rptun_cb, &cb->node);
nxrmutex_unlock(&g_rptun_lockcb);
return 0;
}
void rpmsg_unregister_callback(FAR void *priv_,
rpmsg_dev_cb_t device_created,
rpmsg_dev_cb_t device_destroy,
rpmsg_match_cb_t ns_match,
rpmsg_bind_cb_t ns_bind)
{
FAR struct metal_list *node;
FAR struct metal_list *pnode;
nxrmutex_lock(&g_rptun_lockcb);
metal_list_for_each(&g_rptun_cb, node)
{
FAR struct rptun_cb_s *cb = NULL;
cb = metal_container_of(node, struct rptun_cb_s, node);
if (cb->priv == priv_ &&
cb->device_created == device_created &&
cb->device_destroy == device_destroy &&
cb->ns_match == ns_match &&
cb->ns_bind == ns_bind)
{
metal_list_del(&cb->node);
kmm_free(cb);
break;
}
}
if (device_destroy)
{
metal_list_for_each(&g_rptun_priv, pnode)
{
struct rptun_priv_s *priv;
priv = metal_container_of(pnode,
struct rptun_priv_s, node);
if (priv->rproc.state == RPROC_RUNNING)
{
device_destroy(&priv->rvdev.rdev, priv_);
}
}
}
nxrmutex_unlock(&g_rptun_lockcb);
}
int rptun_initialize(FAR struct rptun_dev_s *dev)
{
struct metal_init_params params = METAL_INIT_DEFAULTS;
FAR struct rptun_priv_s *priv;
static bool onceinit;
#ifndef CONFIG_RPTUN_WORKQUEUE
FAR char *argv[3];
char arg1[19];
#endif
char name[32];
int ret;
if (!onceinit)
{
ret = metal_init(&params);
if (ret < 0)
{
return ret;
}
onceinit = true;
}
priv = kmm_zalloc(sizeof(struct rptun_priv_s));
if (priv == NULL)
{
ret = -ENOMEM;
goto err_mem;
}
priv->dev = dev;
remoteproc_init(&priv->rproc, &g_rptun_ops, priv);
metal_list_init(&priv->bind);
nxrmutex_init(&priv->lock);
snprintf(name, sizeof(name), "/dev/rptun/%s", RPTUN_GET_CPUNAME(dev));
ret = register_driver(name, &g_rptun_devops, 0222, priv);
if (ret < 0)
{
goto err_driver;
}
nxsem_init(&priv->semtx, 0, 0);
#ifdef CONFIG_RPTUN_WORKQUEUE
if (RPTUN_IS_AUTOSTART(dev))
{
priv->cmd = RPTUNIOC_START;
work_queue(HPWORK, &priv->work, rptun_worker, priv, 0);
}
#else
if (RPTUN_IS_AUTOSTART(dev))
{
priv->cmd = RPTUNIOC_START;
nxsem_init(&priv->semrx, 0, 1);
}
else
{
nxsem_init(&priv->semrx, 0, 0);
}
snprintf(arg1, sizeof(arg1), "%p", priv);
argv[0] = (void *)RPTUN_GET_CPUNAME(dev);
argv[1] = arg1;
argv[2] = NULL;
ret = kthread_create("rptun", CONFIG_RPTUN_PRIORITY,
CONFIG_RPTUN_STACKSIZE, rptun_thread, argv);
if (ret < 0)
{
unregister_driver(name);
nxsem_destroy(&priv->semtx);
nxsem_destroy(&priv->semrx);
goto err_driver;
}
#endif
/* Add priv to list */
nxrmutex_lock(&g_rptun_lockcb);
metal_list_add_tail(&g_rptun_priv, &priv->node);
nxrmutex_unlock(&g_rptun_lockcb);
return OK;
err_driver:
nxrmutex_destroy(&priv->lock);
kmm_free(priv);
err_mem:
metal_finish();
return ret;
}
int rptun_boot(FAR const char *cpuname)
{
return rptun_ioctl_foreach(cpuname, RPTUNIOC_START, 0);
}
int rptun_reset(FAR const char *cpuname, int value)
{
return rptun_ioctl_foreach(cpuname, RPTUNIOC_RESET, value);
}
int rptun_panic(FAR const char *cpuname)
{
return rptun_ioctl_foreach(cpuname, RPTUNIOC_PANIC, 0);
}
int rptun_buffer_nused(FAR struct rpmsg_virtio_device *rvdev, bool rx)
{
FAR struct virtqueue *vq = rx ? rvdev->rvq : rvdev->svq;
uint16_t nused = vq->vq_ring.avail->idx - vq->vq_ring.used->idx;
if ((rpmsg_virtio_get_role(rvdev) == RPMSG_HOST) ^ rx)
{
return nused;
}
else
{
return vq->vq_nentries - nused;
}
}
void rptun_dump_all(void)
{
rptun_ioctl_foreach(NULL, RPTUNIOC_DUMP, 0);
}
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