| 摘要 |
A method and apparatus are provided for implementing peripheral component interconnect (PCI) combining function for PCI bridges. A programmable boundary for a combined operation is selected. A write request is received. Responsive to the write request, checking for a combined operation hit is performed. Responsive to an identified combined operation hit, a combined operation is accepted. Checking for the selected programmable boundary for the combined operation is performed. Responsive to identifying the programmable boundary for the combined operation, the combined operation is launched to a destination bus. A programmable timer is identified for the combined operation. Responsive to the programmable timer expiring, the combined operation is launched to a destination bus. The programmable boundary for a combined operation is selected responsive to reading an adapter type and one of combining with a 128-byte boundary, combining with a 256-byte boundary, combining with a 512-byte boundary, or a posted memory write (PMW) is selected.
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