- /*
- * number of 4k pages of host physical memory. The aacraid fw needs
- * this number to be less than 4gb worth of pages. num_physpages is in
- * system page units. New firmware doesn't have any issues with the
- * mapping system, but older Firmware did, and had *troubles* dealing
- * with the math overloading past 32 bits, thus we must limit this
- * field.
- *
- * This assumes the memory is mapped zero->n, which isnt
- * always true on real computers. It also has some slight problems
- * with the GART on x86-64. I've btw never tried DMA from PCI space
- * on this platform but don't be suprised if its problematic.
- */
-#ifndef CONFIG_GART_IOMMU
- if ((num_physpages << (PAGE_SHIFT - 12)) <= AAC_MAX_HOSTPHYSMEMPAGES) {
- init->HostPhysMemPages =
- cpu_to_le32(num_physpages << (PAGE_SHIFT-12));
- } else
-#endif
- {
- init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
- }