Device full memory access through standard PCI express bus

A method of transferring data between a host and a PCI device, the method comprising:

• mapping a fixed memory-mapping control block in a host memory of the host to a control register of a memory-mapping unit of the PCI device;
• mapping a dynamic data-access memory block in the host memory to a default memory block in a memory of the PCI device, wherein the memory-mapping unit of the PCI device translates an address between the dynamic data-access memory block and a memory block in the memory of the PCI device;
• and
• dynamically modifying a value in the control register of the memory-mapping unit through the fixed memory-mapping control block such that an address of the dynamic data-access memory block in the host memory is translated to a different address in the memory of the PCI device based on the modified value in the control register of the memory-mapping unit.

A computer system, comprising:

• a host including a host memory;
• a PCI device including a device memory and a memory-mapping unit;
• and
• a PCI bus electrically coupling the PCI device to the host;
• wherein a fixed memory-mapping control block in the host memory is mapped to a control register for the memory-mapping unit of the PCI device;
• wherein a dynamic data-access memory block in the host memory is mapped to a default memory block in the device memory of the PCI device;
• and
• wherein the memory-mapping unit of the PCI device translates an address between the dynamic data-access memory block and a memory block in the device memory of the PCI device.