/* * Copyright (C) 2007 Ben Skeggs. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial * portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */ #ifndef __NOUVEAU_DMA_H__ #define __NOUVEAU_DMA_H__ #include "nouveau_bo.h" #include "nouveau_chan.h" int nouveau_dma_wait(struct nouveau_channel *, int slots, int size); void nv50_dma_push(struct nouveau_channel *, u64 addr, u32 length, bool no_prefetch); /* * There's a hw race condition where you can't jump to your PUT offset, * to avoid this we jump to offset + SKIPS and fill the difference with * NOPs. * * xf86-video-nv configures the DMA fetch size to 32 bytes, and uses * a SKIPS value of 8. Lets assume that the race condition is to do * with writing into the fetch area, we configure a fetch size of 128 * bytes so we need a larger SKIPS value. */ #define NOUVEAU_DMA_SKIPS … /* Maximum push buffer size. */ #define NV50_DMA_PUSH_MAX_LENGTH … /* Maximum IBs per ring. */ #define NV50_DMA_IB_MAX … /* Object handles - for stuff that's doesn't use handle == oclass. */ enum { … }; static __must_check inline int RING_SPACE(struct nouveau_channel *chan, int size) { … } static inline void OUT_RING(struct nouveau_channel *chan, int data) { … } #define WRITE_PUT(val) … static inline void FIRE_RING(struct nouveau_channel *chan) { … } static inline void WIND_RING(struct nouveau_channel *chan) { … } /* NV_SW object class */ #define NV_SW_DMA_VBLSEM … #define NV_SW_VBLSEM_OFFSET … #define NV_SW_VBLSEM_RELEASE_VALUE … #define NV_SW_VBLSEM_RELEASE … #define NV_SW_PAGE_FLIP … #endif
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