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Add STM32 CCM heep procfs

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This commit is contained in:
Gregory Nutt 2014-07-03 08:18:24 -06:00
parent 08773101a8
commit 64cd7a81ed
4 changed files with 335 additions and 0 deletions
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1
arch/arm/src/stm32/Make.defs
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@ -96,6 +96,7 @@ CHIP_CSRCS = stm32_allocateheap.c stm32_start.c stm32_rcc.c stm32_lse.c
CHIP_CSRCS += stm32_lsi.c stm32_gpio.c stm32_exti_gpio.c stm32_flash.c stm32_irq.c
CHIP_CSRCS += stm32_timerisr.c stm32_dma.c stm32_lowputc.c stm32_serial.c
CHIP_CSRCS += stm32_spi.c stm32_sdio.c stm32_tim.c stm32_waste.c stm32_ccm.c
CHIP_CSRCS += stm32_procfs_ccm.c
ifeq ($(CONFIG_ARMV7M_CMNVECTOR),y)
CHIP_ASRCS += stm32_vectors.S

323
arch/arm/src/stm32/stm32_procfs_ccm.c Normal file
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@ -0,0 +1,323 @@
/****************************************************************************
* arch/arm/src/stm32/stm32_procfs_ccm.c
*
* Copyright (C) 2014 Pelle Windestam. All rights reserved.
* Author: Pelle Windestam (pelle@windestam.se)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sys/statfs.h>
#include <sys/stat.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/sched.h>
#include <nuttx/kmalloc.h>
#include <nuttx/fs/fs.h>
#include <nuttx/fs/procfs.h>
#include <nuttx/fs/dirent.h>
#include <arch/irq.h>
#include "stm32_ccm.h"
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && defined(CONFIG_FS_PROCFS)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define CCM_LINELEN 64
/****************************************************************************
* Private Types
****************************************************************************/
/* This enumeration identifies all of the thread attributes that can be
* accessed via the procfs file system.
*/
/* This structure describes one open "file" */
struct ccm_file_s
{
struct procfs_file_s base; /* Base open file structure */
unsigned int linesize; /* Number of valid characters in line[] */
char line[CCM_LINELEN]; /* Pre-allocated buffer for formatted lines */
/* Add context specific data types for managing an open file here */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* File system methods */
static int ccm_open(FAR struct file *filep, FAR const char *relpath,
int oflags, mode_t mode);
static int ccm_close(FAR struct file *filep);
static ssize_t ccm_read(FAR struct file *filep, FAR char *buffer,
size_t buflen);
static int ccm_dup(FAR const struct file *oldp,
FAR struct file *newp);
static int ccm_stat(FAR const char *relpath, FAR struct stat *buf);
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/* See include/nutts/fs/procfs.h
* We use the old-fashioned kind of initializers so that this will compile
* with any compiler.
*/
const struct procfs_operations ccm_procfsoperations =
{
ccm_open, /* open */
ccm_close, /* close */
ccm_read, /* read */
NULL, /* write */
ccm_dup, /* dup */
NULL, /* opendir */
NULL, /* closedir */
NULL, /* readdir */
NULL, /* rewinddir */
ccm_stat /* stat */
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: ccm_open
****************************************************************************/
static int ccm_open(FAR struct file *filep, FAR const char *relpath,
int oflags, mode_t mode)
{
FAR struct ccm_file_s *priv;
fvdbg("Open '%s'\n", relpath);
/* PROCFS is read-only. Any attempt to open with any kind of write
* access is not permitted.
*
* REVISIT: Write-able proc files could be quite useful.
*/
if ((oflags & O_WRONLY) != 0 || (oflags & O_RDONLY) == 0)
{
fdbg("ERROR: Only O_RDONLY supported\n");
return -EACCES;
}
/* "cpuload" is the only acceptable value for the relpath */
if (strcmp(relpath, "ccm") != 0)
{
fdbg("ERROR: relpath is '%s'\n", relpath);
return -ENOENT;
}
/* Allocate a container to hold the task and attribute selection */
priv = (FAR struct ccm_file_s *)kzalloc(sizeof(struct ccm_file_s));
if (!priv)
{
fdbg("ERROR: Failed to allocate file attributes\n");
return -ENOMEM;
}
/* Save the index as the open-specific state in filep->f_priv */
filep->f_priv = (FAR void *)priv;
return OK;
}
/****************************************************************************
* Name: ccm_close
****************************************************************************/
static int ccm_close(FAR struct file *filep)
{
FAR struct ccm_file_s *priv;
/* Recover our private data from the struct file instance */
priv = (FAR struct ccm_file_s *)filep->f_priv;
DEBUGASSERT(priv);
/* Release the file attributes structure */
kfree(priv);
filep->f_priv = NULL;
return OK;
}
/****************************************************************************
* Name: ccm_read
****************************************************************************/
static ssize_t ccm_read(FAR struct file *filep, FAR char *buffer,
size_t buflen)
{
FAR struct ccm_file_s *priv;
ssize_t ret = 0;
size_t linesize;
size_t copysize;
size_t remaining;
size_t totalsize;
struct mallinfo mem;
off_t offset = filep->f_pos;
fvdbg("buffer=%p buflen=%d\n", buffer, (int)buflen);
/* Recover our private data from the struct file instance */
priv = (FAR struct ccm_file_s *)filep->f_priv;
DEBUGASSERT(priv);
mm_mallinfo(&g_ccm_heap, &mem);
remaining = buflen;
totalsize = 0;
linesize = snprintf(priv->line,
CCM_LINELEN,
" total used free largest\n");
copysize = procfs_memcpy(priv->line, linesize, buffer, remaining, &offset);
totalsize += copysize;
buffer += copysize;
remaining -= copysize;
if (totalsize >= buflen)
{
return totalsize;
}
linesize = snprintf(priv->line,
CCM_LINELEN,
"Mem: %11d%11d%11d%11d\n",
mem.arena,
mem.uordblks,
mem.fordblks,
mem.mxordblk);
copysize = procfs_memcpy(priv->line, linesize, buffer, remaining, &offset);
totalsize += copysize;
/* Update the file offset */
if (totalsize > 0)
{
filep->f_pos += totalsize;
}
return totalsize;
}
/****************************************************************************
* Name: ccm_dup
*
* Description:
* Duplicate open file data in the new file structure.
*
****************************************************************************/
static int ccm_dup(FAR const struct file *oldp, FAR struct file *newp)
{
FAR struct ccm_file_s *oldpriv;
FAR struct ccm_file_s *newpriv;
fvdbg("Dup %p->%p\n", oldp, newp);
/* Recover our private data from the old struct file instance */
oldpriv = (FAR struct ccm_file_s *)oldp->f_priv;
DEBUGASSERT(oldpriv);
/* Allocate a new container to hold the task and attribute selection */
newpriv = (FAR struct ccm_file_s *)kzalloc(sizeof(struct ccm_file_s));
if (!newpriv)
{
fdbg("ERROR: Failed to allocate file attributes\n");
return -ENOMEM;
}
/* The copy the file attribtes from the old attributes to the new */
memcpy(newpriv, oldpriv, sizeof(struct ccm_file_s));
/* Save the new attributes in the new file structure */
newp->f_priv = (FAR void *)newpriv;
return OK;
}
static int ccm_stat(const char *relpath, struct stat *buf)
{
if (strcmp(relpath, "ccm") != 0)
{
fdbg("ERROR: relpath is '%s'\n", relpath);
return -ENOENT;
}
buf->st_mode = S_IFREG|S_IROTH|S_IRGRP|S_IRUSR;
buf->st_size = 0;
buf->st_blksize = 0;
buf->st_blocks = 0;
return OK;
}
#endif /* !CONFIG_DISABLE_MOUNTPOINT && CONFIG_FS_PROCFS */

5
fs/procfs/Kconfig
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@ -54,6 +54,11 @@ config FS_PROCFS_EXCLUDE_SMARTFS
depends on FS_SMARTFS
default n
config FS_PROCFS_EXCLUDE_CCM
bool "Exclude ccm memory usage"
depends on STM32_CCMEXCLUDE
default n
endmenu
endif

6
fs/procfs/fs_procfs.c
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@ -81,6 +81,9 @@ extern const struct procfs_operations uptime_operations;
extern const struct procfs_operations mtd_procfsoperations;
extern const struct procfs_operations part_procfsoperations;
extern const struct procfs_operations smartfs_procfsoperations;
#if defined(CONFIG_STM32_CCMEXCLUDE) && defined(CONFIG_MM_MULTIHEAP) && !defined(FS_PROCFS_EXCLUDE_CCM)
extern const struct procfs_operations ccm_procfsoperations;
#endif
/****************************************************************************
* Private Types
@ -114,6 +117,9 @@ static const struct procfs_entry_s g_procfsentries[] =
#if !defined(CONFIG_FS_PROCFS_EXCLUDE_UPTIME)
{ "uptime", &uptime_operations },
#endif
#if defined(CONFIG_STM32_CCMEXCLUDE) && defined(CONFIG_MM_MULTIHEAP) && !defined(FS_PROCFS_EXCLUDE_CCM)
{ "ccm", &ccm_procfsoperations },
#endif
};
static const uint8_t g_procfsentrycount = sizeof(g_procfsentries) /