diff options
Diffstat (limited to 'shared-core/nouveau_dma.c')
| -rw-r--r-- | shared-core/nouveau_dma.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/shared-core/nouveau_dma.c b/shared-core/nouveau_dma.c deleted file mode 100644 index 8b1549c7..00000000 --- a/shared-core/nouveau_dma.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * 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. - * - */ - -#include "drmP.h" -#include "drm.h" -#include "nouveau_drv.h" -#include "nouveau_dma.h" - -int -nouveau_dma_channel_init(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_drm_channel *dchan = &dev_priv->channel; - struct nouveau_gpuobj *gpuobj = NULL; - struct mem_block *pushbuf; - int grclass, ret, i; - - DRM_DEBUG("\n"); - - pushbuf = nouveau_mem_alloc(dev, 0, 0x8000, - NOUVEAU_MEM_FB | NOUVEAU_MEM_MAPPED, - (struct drm_file *)-2); - if (!pushbuf) { - DRM_ERROR("Failed to allocate DMA push buffer\n"); - return -ENOMEM; - } - - /* Allocate channel */ - ret = nouveau_fifo_alloc(dev, &dchan->chan, (struct drm_file *)-2, - pushbuf, NvDmaFB, NvDmaTT); - if (ret) { - DRM_ERROR("Error allocating GPU channel: %d\n", ret); - return ret; - } - DRM_DEBUG("Using FIFO channel %d\n", dchan->chan->id); - - /* Map push buffer */ - drm_core_ioremap(dchan->chan->pushbuf_mem->map, dev); - if (!dchan->chan->pushbuf_mem->map->handle) { - DRM_ERROR("Failed to ioremap push buffer\n"); - return -EINVAL; - } - dchan->pushbuf = (void*)dchan->chan->pushbuf_mem->map->handle; - - /* Initialise DMA vars */ - dchan->max = (dchan->chan->pushbuf_mem->size >> 2) - 2; - dchan->put = dchan->chan->pushbuf_base >> 2; - dchan->cur = dchan->put; - dchan->free = dchan->max - dchan->cur; - - /* Insert NOPS for NOUVEAU_DMA_SKIPS */ - dchan->free -= NOUVEAU_DMA_SKIPS; - dchan->push_free = NOUVEAU_DMA_SKIPS; - for (i=0; i < NOUVEAU_DMA_SKIPS; i++) - OUT_RING(0); - - /* NV_MEMORY_TO_MEMORY_FORMAT requires a notifier */ - if ((ret = nouveau_notifier_alloc(dchan->chan, NvNotify0, 1, - &dchan->notify0_offset))) { - DRM_ERROR("Error allocating NvNotify0: %d\n", ret); - return ret; - } - - /* We use NV_MEMORY_TO_MEMORY_FORMAT for buffer moves */ - if (dev_priv->card_type < NV_50) grclass = NV_MEMORY_TO_MEMORY_FORMAT; - else grclass = NV50_MEMORY_TO_MEMORY_FORMAT; - if ((ret = nouveau_gpuobj_gr_new(dchan->chan, grclass, &gpuobj))) { - DRM_ERROR("Error creating NvM2MF: %d\n", ret); - return ret; - } - - if ((ret = nouveau_gpuobj_ref_add(dev, dchan->chan, NvM2MF, - gpuobj, NULL))) { - DRM_ERROR("Error referencing NvM2MF: %d\n", ret); - return ret; - } - dchan->m2mf_dma_source = NvDmaFB; - dchan->m2mf_dma_destin = NvDmaFB; - - BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NAME, 1); - OUT_RING (NvM2MF); - BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_SET_DMA_NOTIFY, 1); - OUT_RING (NvNotify0); - BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_SET_DMA_SOURCE, 2); - OUT_RING (dchan->m2mf_dma_source); - OUT_RING (dchan->m2mf_dma_destin); - FIRE_RING(); - - return 0; -} - -void -nouveau_dma_channel_takedown(struct drm_device *dev) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_drm_channel *dchan = &dev_priv->channel; - - DRM_DEBUG("\n"); - - if (dchan->chan) { - drm_core_ioremapfree(dchan->chan->pushbuf_mem->map, dev); - nouveau_fifo_free(dchan->chan); - dchan->chan = NULL; - } -} - -#define READ_GET() ((NV_READ(dchan->chan->get) - \ - dchan->chan->pushbuf_base) >> 2) -#define WRITE_PUT(val) do { \ - NV_WRITE(dchan->chan->put, \ - ((val) << 2) + dchan->chan->pushbuf_base); \ -} while(0) - -int -nouveau_dma_wait(struct drm_device *dev, int size) -{ - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_drm_channel *dchan = &dev_priv->channel; - uint32_t get; - - while (dchan->free < size) { - get = READ_GET(); - - if (dchan->put >= get) { - dchan->free = dchan->max - dchan->cur; - - if (dchan->free < size) { - dchan->push_free = 1; - OUT_RING(0x20000000|dchan->chan->pushbuf_base); - if (get <= NOUVEAU_DMA_SKIPS) { - /*corner case - will be idle*/ - if (dchan->put <= NOUVEAU_DMA_SKIPS) - WRITE_PUT(NOUVEAU_DMA_SKIPS + 1); - - do { - get = READ_GET(); - } while (get <= NOUVEAU_DMA_SKIPS); - } - - WRITE_PUT(NOUVEAU_DMA_SKIPS); - dchan->cur = dchan->put = NOUVEAU_DMA_SKIPS; - dchan->free = get - (NOUVEAU_DMA_SKIPS + 1); - } - } else { - dchan->free = get - dchan->cur - 1; - } - } - - return 0; -} |