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driver/syslog: support syslog rpmsg character buffer 

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
This commit is contained in:
Jiuzhu Dong 2022-06-27 11:30:02 +08:00 committed by Xiang Xiao
parent 5c33db4220
commit 664fcb2698
2 changed files with 79 additions and 13 deletions
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26
drivers/syslog/Kconfig
View File

@ -186,6 +186,15 @@ config SYSLOG_COLOR_OUTPUT
comment "SYSLOG channels"
config SYSLOG_DEVPATH
string "System log device"
default "/dev/ttyS1"
---help---
The full path to the system logging device. For the RAMLOG SYSLOG device,
this is normally "/dev/kmsg". For character SYSLOG devices, it should be
some other existing character device (or file) supported by the configuration
(such as "/dev/ttyS1")/
if !ARCH_SYSLOG
config SYSLOG_CHAR
bool "Log to a character device"
@ -236,19 +245,6 @@ config SYSLOG_DEFAULT
endif
if SYSLOG_CHAR
config SYSLOG_DEVPATH
string "System log device"
default "/dev/ttyS1"
---help---
The full path to the system logging device. For the RAMLOG SYSLOG device,
this is normally "/dev/kmsg". For character SYSLOG devices, it should be
some other existing character device (or file) supported by the configuration
(such as "/dev/ttyS1")/
endif # SYSLOG_CHAR
if RAMLOG_SYSLOG
config RAMLOG_BUFFER_SECTION
@ -286,6 +282,10 @@ config SYSLOG_RPMSG_OVERWRITE
Allow syslog rpmsg overwrite, may cause syslog to lose some logs.
Set 'n' if you don't want lost logs, but may harm performance.
config SYSLOG_RPMSG_CHARDEV
bool "SYSLOG rpmsg character device"
default !SYSLOG_RPMSG_WORK_DELAY
endif # SYSLOG_RPMSG
config SYSLOG_RPMSG_SERVER

66
drivers/syslog/syslog_rpmsg.c
View File

@ -87,6 +87,12 @@ static void syslog_rpmsg_device_destroy(FAR struct rpmsg_device *rdev,
static int syslog_rpmsg_ept_cb(FAR struct rpmsg_endpoint *ept,
FAR void *data, size_t len, uint32_t src,
FAR void *priv_);
#ifdef CONFIG_SYSLOG_RPMSG_CHARDEV
static ssize_t syslog_rpmsg_file_read(FAR struct file *filep,
FAR char *buffer, size_t len);
static ssize_t syslog_rpmsg_file_write(FAR struct file *filep,
FAR const char *buffer, size_t len);
#endif
/****************************************************************************
* Private Data
@ -94,6 +100,22 @@ static int syslog_rpmsg_ept_cb(FAR struct rpmsg_endpoint *ept,
static struct syslog_rpmsg_s g_syslog_rpmsg;
#ifdef CONFIG_SYSLOG_RPMSG_CHARDEV
static const struct file_operations g_syslog_rpmsgfops =
{
NULL, /* open */
NULL, /* close */
syslog_rpmsg_file_read, /* read */
syslog_rpmsg_file_write, /* write */
NULL, /* seek */
NULL, /* ioctl */
NULL /* poll */
#ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
, NULL /* unlink */
#endif
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
@ -319,6 +341,39 @@ static int syslog_rpmsg_ept_cb(FAR struct rpmsg_endpoint *ept,
return 0;
}
#ifdef CONFIG_SYSLOG_RPMSG_CHARDEV
static ssize_t syslog_rpmsg_file_read(FAR struct file *filep,
FAR char *buffer, size_t len)
{
FAR struct inode *inode = filep->f_inode;
FAR struct syslog_rpmsg_s *priv;
irqstate_t flags;
/* Some sanity checking */
DEBUGASSERT(inode && inode->i_private);
priv = (FAR struct syslog_rpmsg_s *)inode->i_private;
flags = enter_critical_section();
if (!priv->suspend && !priv->transfer &&
is_rpmsg_ept_ready(&priv->ept))
{
priv->transfer = true;
work_queue(HPWORK, &priv->work, syslog_rpmsg_work, priv, 0);
}
leave_critical_section(flags);
return 0;
}
static ssize_t syslog_rpmsg_file_write(FAR struct file *filep,
FAR const char *buffer, size_t len)
{
syslog(LOG_INFO, "%.*s", (int)len, buffer);
return len;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
@ -428,6 +483,17 @@ void syslog_rpmsg_init_early(FAR void *buffer, size_t size)
int syslog_rpmsg_init(void)
{
#ifdef CONFIG_SYSLOG_RPMSG_CHARDEV
int ret;
ret = register_driver(CONFIG_SYSLOG_DEVPATH, &g_syslog_rpmsgfops,
0666, &g_syslog_rpmsg);
if (ret < 0)
{
return ret;
}
#endif
return rpmsg_register_callback(&g_syslog_rpmsg,
syslog_rpmsg_device_created,
syslog_rpmsg_device_destroy,