'ioctl ()' returns error on IDE access
This is for a single board computer running Linux. There is no physical hard drive in the system but is using onboard flash chips. Earlier we used DiskOnChip which I could access at "/dev/discs/disc0/disc". Recently started using a new board which has a different flash chip and is on IDE bus.
I am trying to port some of the drivers and the 'ioctl()' call is failing. Here is the original code (irrelevant code lines have been omitted): ********* code -start ********** fd=open(BIT_FILE, O_RDWR); if(fd>0) { } /* END of if(fd>0) */ ------ ---- ****** END of code ****** This all works great on the first board where the BIT_FILE is defined as "/dev/mtd/0". When I try the same code on the second ( with solid state on-board IDE drive) it fails. I can see the error message printed on the console which shows that the ioctl call with MEMGETINFO failed. I modified the definition of BIT_FILE to different things as follows with the same resuults: "/dev/discs/disc0/part1" and tried "/dev/ide/host1/bus0/target0/lun0/disc/part1". My question is: what should I use for BIT_FILE while 'opening anew file' which is further used for 'ioctl()' operation? I guess any generic solution that uses a drive on IDE bus should work for my problem. Anyone, any suggestions please? Thanks in advance. |
Anyone, any thoughts, suggestions please??
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