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  1. Aug 24, 2004
    • Dave Airlie's avatar
      Merged drmfntbl-0-0-2 · d4dbf457
      Dave Airlie authored
    • Dave Airlie's avatar
      addmap-base-2 patch from Jon Smirl: · eac498ba
      Dave Airlie authored
      sets up the DRM to have the ability to have permanent maps while the driver
          is loaded...
      eac498ba
    • Erdi Chen's avatar
      This patch adds three new ioctl's to the VIA Unichrome/Pro DRM driver: · 25e319c1
      Erdi Chen authored
          DRM_IOCTL_VIA_DMA_INIT DRM_IOCTL_VIA_CMDBUFFER DRM_IOCTL_VIA_FLUSH
      The first ioctl sets up an area in AGP memory that will be used as the ring
          buffer. The second ioctl copies a command buffer from user space memory
          to the ring buffer. The third ioctl waits for engine idle until it
          returns.
      The motivation for this patch is to avoid the wait for engine idle call
          before each buffer flush in the current DRI driver. With this patch,
          the DRI driver can continue to flush its buffer as long as there is
          free space in the ring buffer.
      This patch adds an additional copy operation on the command buffer. This
          buffer copying is necessary to support multiple DRI clients rendering
          simultaneously. Otherwise, more CPU time will be spent in the busy loop
          waiting for engine idle between DRI context switch. Even in the single
          client case, the tradeoff is reasonable in comparision to the kernel
          call to check for free buffer space for the client to render directly
          to the ring buffer.
      25e319c1
  2. Aug 23, 2004
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