still be forced at compile time by setting MACH64_USE_DMA to 0.
DMA test now uses already allocated pci pool memory for descriptor table
and allocates a temporary dma buffer from the pool. This should
probabaly be changed to use one of our mapped vertex/dma buffers.
Also, return error code if _dispatch_vertex causes a lockup, either with
DMA (wait for idle fails) or MMIO (wait for fifo times out).
functional for both PCI and AGP). 16 KB descriptor table is created by
the drm and the handles stored in the device private structure.
Finish setup of AGP -- AGP registers are now initialized.
Fix up MMIO for PCI.
Implementation of several functions to support the handling of DMA
buffers. The DMA emulation code is disabled because it segfaults when
trying to read the DMA buffer.
