Age | Commit message (Collapse) | Author |
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DRM_COPY_FROM_USER. PCI IO changes in 2.6.9-rc1 bk currently.
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code Linux specific.
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version number.
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suggested by Arjan..
Signed-off-by: Dave Airlie <airlied@linux.ie>
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set does the pci_dev_put for you.
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conflicts
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sets up the DRM to have the ability to have permanent maps while the driver
is loaded...
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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.
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dev_priv live always, and add AGP detection in kernel patch:
radeon-pre-2.patch From: Jon Smirl
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compile #if 0 get_pci_driver use in hotplug function until fbdev work
around is written
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upcoming commit for the SiS driver.
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Reported by: Jung-uk Kim <jkim@niksun.com>
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