> > Hi All, > > void *mmap(void *start, size_t length, int prot, int flags, int > fd, off_t offset); > > I am providing 1.6MB as length parameter in mmap command. > It is giving me error as Can't mmap region with error number EINVAL. I > searched for the probable causes for EINVAL error number, and cheked it that > i am satisfying all of them > > on the other hand when i am providing 1.384MB as length parameter in mmap > command. > It is successful. > This mmap command is being issued from User space(from the DIrectFB code > in systems/fbdev.c) > > The exact command which i am writing is > addr = mmap(NULL, dfb_fbdev->shared->fix.mmio_len, PROT_READ | PROT_WRITE, > MAO_SHARED, dfb_fbdev->fd, 0); > > Can anybody provide any clue on it? > I want to access the mmio regs at offset (0.9MB to 1.6MB offset). > Also in my system MIPS board(broadcom chip), the framebuffer driver > contains support for MMIO length as 1.6MB. > > -- > Thanks & Regards, > kaka >
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