From: kaka <sha...@gm...> - 2007-11-25 12:29:31
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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 -- Thanks & Regards, kaka |