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path: root/shared-core/via_dma.c
AgeCommit message (Collapse)Author
2006-01-02Realign via driver with changes in Linux kernel (mainly whitespace)Dave Airlie
2005-09-25Add the via PCI DMA blit code.Thomas Hellstrom
2005-09-03convert ioctl flags to use flags instead of separate intsDave Airlie
2005-08-15Port the VIA DRM to FreeBSD. Original patch by Jake, with some cleanup byEric Anholt
me to match other drivers and avoid ifdeffing. The linux via_drv.c will be moved from shared-core to linux-core soon by repocopy. Submitted by: Jake Burkholder <jake@FreeBSD.org> Tested by: unichrome
2005-07-15VIA: Fix sparse warnings (Alexey Dobriyan)Thomas Hellstrom
2005-05-08VIA: Fix for oops when AGP ring-buffer initialization is called and thereThomas Hellstrom
is no AGP memory acquired.
2005-04-18VIA:Thomas Hellstrom
1) Security fix: Stopped possible MMIO access to PCI DMA area for the unichrome Pro. 2) Fixed an odd cpu usage problem by padding small AGP DMA submissions. Bumped patchlevel.
2005-03-28Via updates:Thomas Hellstrom
New PCI command parser. Moved from via_dma.c to via_verifier.c so functions with similar functionality are close to eachother. Moved video related functions to via_video.c, which might be extended in the future, as new video functionality is added. New device-specific generic IRQ IOCTL, similar to the general VBLANK IOCTL, but with support for multiple device IRQ sources and functionality. Support for Unichrome Pro PM800/CN400 video DMA commands in verifier and PCI parser. Support for Unichrome Pro PM800/CN400 HQV IRQs in the new generic IRQ IOCTL. Bumped minor. New version 2.6.0.
2005-02-01cleanup patch from Adrian Bunk <bunk@stusta.de>Dave Airlie
2005-01-27Fixed multiple devices DMA bug. Fixed PCI path FIRE command detectionThomas Hellstrom
2005-01-07via updates: moved the verifier state struct to dev_priv. Implemented AGPThomas Hellstrom
alignment check.
2005-01-05VIA update:Thomas Hellstrom
Release video futexes when context is destroyed (This was previously done by the X server). Added New Unichrome Pro VIDEO DMA commands to the verifier. Added Quiescent heavyweight lock mode.
2004-12-31VIA DRM: Stability enhancements and cleanups in via_dma.c Added explicitThomas Hellstrom
licence notice in via_dma.c
2004-12-21via DRM: Tightened the security for some functions of theThomas Hellstrom
DRM_IOCTL_VIA_DMA_INIT IOCTL. Bumped patchlevel and driver date. XFree86 bug: 2119
2004-12-19via changes: Fixed typecasting bug in via_dma.c, and possible short-circuitThomas Hellstrom
bug in the cmdbuf_size ioctl. Modified ring-buffer jump code AGAIN, due to new oddities discovered on the Unichrome Pro with faster processors. Bumped patchlevel and driver date.
2004-12-13VIA drm updates:Thomas Hellstrom
1. Improved security check of AGP texture adresses. 2. Hopefully last fix of ring-buffer jump oddities. 3. Added ioctl to check available space and command regulator lag in ring-buffer. This is needed for 3D application responsiveness.
2004-12-06Security and optimization fixes for the via drm:Thomas Hellstrom
1. The command verifier was never initialized in the non-core source tree. 2. Check added that the AGP ring buffer has been initialized before accepting command buffer. 3. Free space check in the AGP buffer is moved to after command verification, which is more optimal in most cases.
2004-12-03Added 3D functionality to the via command verifier. Modified the viaThomas Hellstrom
ring-buffer code somewhat to workaround hardware problems. Bumped via minor version number.
2004-11-27Reworked PCI MMIO command buffer parser, and imported code from the MesaThomas Hellstrom
driver. It can now handle the 3D OpenGL commands from the Mesa unichrome driver. Added vsync frequency detection support. This will be used in the future for XvMC and better frame timing. Bumped minor version number and driver date.
2004-11-03Fixed bug in via_dma.c. The code didn't check that the lock was held by theThomas Hellstrom
caller. Just that it was held.
2004-11-01Reworked the jump-code in via_dma.c. The command regulator now seems toThomas Hellstrom
pause correctly after a jump. Removed the debug message from within the interrupt handler of via_irq.c
2004-10-30Some stabilizing work to the DMA ring-buffer code. Temporarily replaced theThomas Hellstrom
rewind jump with a reinitialization. This makes the code stable on CLE266 and KM400.
2004-10-12Via updates. Fixed unlikely but possible uint32_t overflow in ring-bufferThomas Hellstrom
code. bumped patchlevel.
2004-10-09Lindent the via stuff so I can include it in kernelDave Airlie
2004-10-08Changed unsigned to uint32_t in some ioctl parameters. Introduced firstThomas Hellstrom
rudimentary command verifier for dma buffers. Changed the decoder futex ioctl parameters. Bumped the via major version number.
2004-09-30Lindent of core build. Drivers checked for no binary diffs. A few filesJon Smirl
weren't Lindent's because their comments didn't convert very well. A bunch of other minor clean up with no code implact included.
2004-09-27First check in for DRM that splits core from personality modulesJon Smirl
2004-09-12Fix DRM to compile cleanly with recent kernel changes in PCI IO andJon Smirl
DRM_COPY_FROM_USER. PCI IO changes in 2.6.9-rc1 bk currently.
2004-09-07Added IOCTL for writing 2D DMA command buffers over PCI. Bumped minorThomas Hellstrom
version number.
2004-08-30Fix copy_from_user return value ignored warning at via_dma.c:168.Erdi Chen
2004-08-27__NO_VERSION__ hasn't been needed since 2.3 days ditch it...Dave Airlie
2004-08-26Rearrange things so that via_dma.c will compile with inline via_check_dmaJon Smirl
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.
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