<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I can probably try this out soon. I use 4.10.2 for my projects right now, and I use RFS on:<div>- RAM disks</div><div>- a custom block driver ( SDRAM over DMA ) </div><div>- nvram disk ( have not used this one lately ) </div><div>- Flash disk on the coldfire mcf5235. I recently verified that this works, but I did not create any directories on the disk, it just holds my boot files.</div><div><br></div><div>Alan</div><div><br></div><div><br></div><div><div><div><div>On Mar 18, 2013, at 2:35 PM, Matthew J Fletcher <<a href="mailto:amimjf@gmail.com">amimjf@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Hi,<br><br><br>Alas the mkdir() is the first filesystem operation i am doing. I am not sure if i can send attachments to the list so i've cut and pasted the relivant functions below. I guess the following would run on any BSP, its just a 256k block of sram. If there is a BSP with enough memory the base pointer for the filesystem could just be a big malloc().<br>
<br>------------------- snip -------------------------<br><br><br>#define CONFIGURE_IDLE_TASK_BODY rtems_idle<br>#define CONFIGURE_EXTRA_TASK_STACKS (CONFIGURE_MAXIMUM_TASKS * RTEMS_MINIMUM_STACK_SIZE)<br><br>#define CONFIGURE_MAXIMUM_DRIVERS 6<br>
<br>/* NOTICE: the clock driver is explicitly disabled */<br>#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER<br>#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER<br><br>#define CONFIGURE_DISABLE_CLASSIC_API_NOTEPADS<br>
#define CONFIGURE_MAXIMUM_TASKS 40 // TX MAX_THREAD<br>#define CONFIGURE_MAXIMUM_TIMERS 40 // TX MAX_TIMER<br>#define CONFIGURE_MAXIMUM_SEMAPHORES 40 // TX MAX_MUTEX<br>#define CONFIGURE_MAXIMUM_MESSAGE_QUEUES 40 // TX MAX_MSG_QUEUE<br>
#define CONFIGURE_MAXIMUM_PARTITIONS 5<br>#define CONFIGURE_MAXIMUM_REGIONS 5<br>#define CONFIGURE_MAXIMUM_PORTS 0<br>#define CONFIGURE_MAXIMUM_PERIODS 0<br>#define CONFIGURE_MAXIMUM_BARRIERS 0<br><br>#define CONFIGURE_MICROSECONDS_PER_TICK 10000 /* 10 milliseconds */<br>
#define CONFIGURE_TICKS_PER_TIMESLICE 50 /* 50 milliseconds */<br><br>#define CONFIGURE_APPLICATION_NEEDS_LIBBLOCK<br>#define CONFIGURE_BDBUF_MAX_READ_AHEAD_BLOCKS 2<br>#define CONFIGURE_BDBUF_MAX_WRITE_BLOCKS 8<br>
#define CONFIGURE_SWAPOUT_TASK_PRIORITY 15<br>#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM<br>#define CONFIGURE_FILESYSTEM_RFS<br>#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 10<br><br>#define CONFIGURE_RTEMS_INIT_TASKS_TABLE<br>
#define CONFIGURE_INIT<br>#include <rtems/confdefs.h><br><br><br>uint32_t rtems_flashdisk_configuration_size =1;<br>const char* flash_driver = "/dev/fdda"; // RTEMS_FLASHDISK_DEVICE_BASE_NAME, 1st device<br>
const char* flash_path = "/flash";<br><br>uint32_t rtems_nvdisk_configuration_size =1;<br>const char* sram_driver = "/dev/nvda"; // RTEMS_NVDISK_DEVICE_BASE_NAME, 1st device<br>const char* sram_path = "/sram";<br>
<br><br>/**<br> * Let the IO system allocation the next available major number.<br> */<br>#define RTEMS_DRIVER_AUTO_MAJOR (0)<br><br>#define FLASHDISK_SEGMENT_COUNT 8 /* 128*/ // Spansion S29GL128S, 128Mbit part<br>#define FLASHDISK_SEGMENT_SIZE (128 * 1024) // Spansion S29GL128S, 128k sized sectors<br>
#define FLASHDISK_BLOCK_SIZE 512<br>#define FLASHDISK_BLOCKS_PER_SEGMENT (FLASHDISK_SEGMENT_SIZE / FLASHDISK_BLOCK_SIZE)<br>#define FLASHDISK_SIZE (FLASHDISK_SEGMENT_COUNT * FLASHDISK_SEGMENT_SIZE)<br><br><br>/**<br> * The SRAM Device setup<br>
*/<br>rtems_nvdisk_device_desc rtems_sram_device_descriptor[] =<br>{<br> {<br> flags: 0,<br> base: 0,<br> size: 256 * 1024, // 256K (Adjust when ROM.ld, _IMFS_DiskSize is changed)<br> nv_ops: &rtems_nvdisk_sram_handlers<br>
}<br>};<br><br>const rtems_nvdisk_config rtems_nvdisk_configuration[] =<br>{<br> {<br> block_size: 512,<br> device_count: 1,<br> devices: &rtems_sram_device_descriptor[0],<br>
flags: 0,<br> info_level: 0<br> }<br>};<br><br><br><br><br>/**<br> * Create the SRAM Disk Driver entry.<br> */<br>rtems_driver_address_table rtems_sram_ops = {<br> initialization_entry: rtems_nvdisk_initialize,<br>
open_entry: rtems_blkdev_generic_open,<br> close_entry: rtems_blkdev_generic_close,<br> read_entry: rtems_blkdev_generic_read,<br> write_entry: rtems_blkdev_generic_write,<br>
control_entry: rtems_blkdev_generic_ioctl<br>};<br><br><br><br>int setup_sram_disk (int cold_boot)<br>{<br> rtems_device_major_number major;<br> rtems_status_code sc;<br><br> // settings<br> rtems_sram_device_descriptor[0].base = (unsigned long)eTalus_IMFS_start;<br>
<br> if (cold_boot)<br> {<br> memset(rtems_sram_device_descriptor[0].base, 0xff, rtems_sram_device_descriptor[0].size );<br> }<br><br> /*<br> * Register the NV Disk driver.<br> */<br> sc = rtems_io_register_driver (RTEMS_DRIVER_AUTO_MAJOR, &rtems_sram_ops, &major);<br>
}<br><br><br>/*<br> *<br> * RFS on SRAM<br> *<br> */<br><br>void mount_rfs_on_sram(int cold_boot)<br>{<br> rtems_rfs_format_config config;<br><br> setup_sram_disk (cold_boot);<br><br> // zero is a good set of defaults<br>
memset (&config, 0, sizeof (rtems_rfs_format_config));<br><br> if (rtems_rfs_format (sram_driver, &config) < 0)<br> {<br> sprintf(inital_print_buffer,"error: format of %s failed: %s\n", sram_driver, strerror (errno));<br>
UART0_SendStr(inital_print_buffer);<br> }<br><br> if (mount_and_make_target_path(<br> sram_driver,<br> sram_path,<br> RTEMS_FILESYSTEM_TYPE_RFS,<br> RTEMS_FILESYSTEM_READ_WRITE,<br>
NULL<br> ) != 0)<br> {<br> sprintf(inital_print_buffer,"error: mount of %s to %s failed: %s\n", sram_driver, sram_path, strerror (errno));<br> UART0_SendStr(inital_print_buffer);<br>
}<br> <br> rc = rtems_mkdir("sram/DB", S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);<br>}<br><br><br><br>------------------- end ------------------------<br><br><br><br><br><br><div class="gmail_quote">
On 18 March 2013 17:42, Joel Sherrill <span dir="ltr"><<a href="mailto:joel.sherrill@oarcorp.com" target="_blank">joel.sherrill@oarcorp.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Is this reproducible with something you can share?<br>
<br>
Looking at the source, I think this case is that you<br>
filled the filesystem and there were no free blocks.<br>
But I am looking at the head and not that familiar<br>
with this filesystem.<br>
<br>
--joel<div class="HOEnZb"><div class="h5"><br>
On 3/18/2013 12:20 PM, Matthew J Fletcher wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
I have an RFS filesystem using the nvram device, its formatted ok and mount_and_make_target_path() also worked ok. But attempting to mkdir() causes a really lowlevel issue.<br>
<br>
The callstack;<br>
<br>
rtems_rfs_block_map_find() at rtems-rfs-block.c:246 0x81198bd8<br>
rtems_rfs_block_map_next_<u></u>block() at rtems-rfs-block.c:353 0x81198d1e<br>
rtems_rfs_dir_lookup_ino() at rtems-rfs-dir.c:204 0x8119951c<br>
rtems_rfs_rtems_eval_for_make(<u></u>) at rtems-rfs-rtems.c:440 0x8118e142<br>
IMFS_evaluate_for_make() at imfs_eval.c:435 0x81190718<br>
mknod() at mknod.c:64 0x81183d5c<br>
mkdir() at mkdir.c:29 0x81183cf0<br>
build() at rtems_mkdir.c:101 0x811843a0<br>
rtems_mkdir() at rtems_mkdir.c:136 0x811843a0<br>
<br>
<br>
the rtems_rfs_block_pos_block_<u></u>past_end macro is failing and causing the return of ENXIO.<br>
<br>
The two arguments to the macro are;<br>
<br>
bpos->bno = 1<br>
bpos->boff = 0<br>
bpos->block = 0<br>
<br>
map->size->count = 1<br>
map->size->offset = 0<br>
<br>
Which seems to me the cause of ENXIO being returned, but i dont know how my BSP could affect this.<br>
<br>
Do people use RFS in production systems ? i am using the 4.10.2 sources.<br>
<br>
<br>
regards<br>
---<br>
Matthew J Fletcher<br>
<br>
</blockquote>
<br>
<br></div></div><span class="HOEnZb"><font color="#888888">
-- <br>
Joel Sherrill, Ph.D. Director of Research & Development<br>
<a href="mailto:joel.sherrill@OARcorp.com">joel.sherrill@OARcorp.com</a> On-Line Applications Research<br>
Ask me about RTEMS: a free RTOS Huntsville AL 35805<br>
Support Available (256) 722-9985<br>
<br>
</font></span></blockquote></div><br><br clear="all"><br>-- <br><div><br>regards</div><div>---</div><div>Matthew J Fletcher</div><br>
_______________________________________________<br>rtems-users mailing list<br><a href="mailto:rtems-users@rtems.org">rtems-users@rtems.org</a><br>http://www.rtems.org/mailman/listinfo/rtems-users<br></blockquote></div><br></div></div></body></html>