Is there any method of reading and writing more than 1 DW from the user-space of PCI device? I am currently using https://github.com/numato-viya/pcimem this code for accessing the data from the user space of the PCI device but the limitation of this code is it can access only 1 DW from the Userspace. But I want to access more than one DW from the userspace in one TLP. Can you help me how to access more than 1DW in one TLP?
Is there any method of reading and writing more than 1 DW from the user-space of PCI device?
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You could easily add a 'd' option to that code to use a uint64_t. On a 64-bit processor, it would generate an 8-byte access. The device is not obligated to support 8-byte accesses, though.