Hi all, I want to copy data from user space to PCI memory.
I mapped the PCI memory of the card by, 1)pci_request_regions(pci_dev, DEVICE_NAME); 2)buffer_addr = pci_iomap(pci_dev, 1, 1024); Now I want to write data supplied by the user to buffer_addr(BAR1 pre-fetch-able memory of the device) I did like this: copy_from_user(buffer_addr, usr_addr, 1024) This method is working fine on an X86 running linux 2.6.27 kernel. I can see the data clearly copied. I want to know is this legal for all the platforms? and for older kernels starting from 2.6.16? If the above method is totally legal then can I use copy_to_user(usr_addr, buffer_addr, 1024) also? Regards, Arun C -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [email protected] Please read the FAQ at http://kernelnewbies.org/FAQ
