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path: root/shared-core/via_drv.c
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2004-08-24Merged drmfntbl-0-0-2Dave Airlie
2004-08-24This patch adds three new ioctl's to the VIA Unichrome/Pro DRM driver:Erdi Chen
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.
2004-08-17Merged drmfntbl-0-0-1Dave Airlie
2004-04-121. Added a PCI ID.Thomas Hellstrom
2. Big change to the XvMC part of the SAREA. OpenGL clients will not suffer from this, and via XvMC is still alpha. Needed to make future additions to XvMC (More decoders and overlays) possible. 3. Bumped version number to 1.3.0.
2004-03-23Merged via-1-2-0Thomas Hellstrom