1 files changed, 256 insertions, 0 deletions
diff --git a/linux-core/nouveau_buffer.c b/linux-core/nouveau_buffer.c
new file mode 100644
index 00000000..c40dff6b
--- /dev/null
+++ b/linux-core/nouveau_buffer.c
@@ -0,0 +1,256 @@
+/*
+ * Copyright 2007 Dave Airlied
+ * 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
+ * VA LINUX SYSTEMS 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.
+ */
+/*
+ * Authors: Dave Airlied <airlied@linux.ie>
+ *	    Ben Skeggs   <darktama@iinet.net.au>
+ *	    Jeremy Kolb  <jkolb@brandeis.edu>
+ */
+
+#include "drmP.h"
+#include "nouveau_drm.h"
+#include "nouveau_drv.h"
+#include "nouveau_dma.h"
+
+static struct drm_ttm_backend *
+nouveau_bo_create_ttm_backend_entry(struct drm_device * dev)
+{
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+	switch (dev_priv->gart_info.type) {
+	case NOUVEAU_GART_AGP:
+		return drm_agp_init_ttm(dev);
+	case NOUVEAU_GART_SGDMA:
+		return nouveau_sgdma_init_ttm(dev);
+	default:
+		DRM_ERROR("Unknown GART type %d\n", dev_priv->gart_info.type);
+		break;
+	}
+
+	return NULL;
+}
+
+static int
+nouveau_bo_fence_type(struct drm_buffer_object *bo,
+		      uint32_t *fclass, uint32_t *type)
+{
+	/* When we get called, *fclass is set to the requested fence class */
+
+	if (bo->mem.mask & (DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE))
+		*type = 3;
+	else
+		*type = 1;
+	return 0;
+
+}
+
+static int
+nouveau_bo_invalidate_caches(struct drm_device *dev, uint64_t buffer_flags)
+{
+	/* We'll do this from user space. */
+	return 0;
+}
+
+static int
+nouveau_bo_init_mem_type(struct drm_device *dev, uint32_t type,
+			 struct drm_mem_type_manager *man)
+{
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+	switch (type) {
+	case DRM_BO_MEM_LOCAL:
+		man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
+			     _DRM_FLAG_MEMTYPE_CACHED;
+		man->drm_bus_maptype = 0;
+		break;
+	case DRM_BO_MEM_VRAM:
+		man->flags = _DRM_FLAG_MEMTYPE_FIXED |
+			     _DRM_FLAG_MEMTYPE_MAPPABLE |
+			     _DRM_FLAG_NEEDS_IOREMAP;
+		man->io_addr = NULL;
+		man->drm_bus_maptype = _DRM_FRAME_BUFFER;
+		man->io_offset = drm_get_resource_start(dev, 1);
+		man->io_size = drm_get_resource_len(dev, 1);
+		if (man->io_size > nouveau_mem_fb_amount(dev))
+			man->io_size = nouveau_mem_fb_amount(dev);
+		break;
+	case DRM_BO_MEM_PRIV0:
+		/* Unmappable VRAM */
+		man->flags = _DRM_FLAG_MEMTYPE_CMA;
+		man->drm_bus_maptype = 0;
+		break;
+	case DRM_BO_MEM_TT:
+		switch (dev_priv->gart_info.type) {
+		case NOUVEAU_GART_AGP:
+			man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
+				     _DRM_FLAG_MEMTYPE_CSELECT |
+				     _DRM_FLAG_NEEDS_IOREMAP;
+			man->drm_bus_maptype = _DRM_AGP;
+			break;
+		case NOUVEAU_GART_SGDMA:
+			man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
+				     _DRM_FLAG_MEMTYPE_CSELECT |
+				     _DRM_FLAG_MEMTYPE_CMA;
+			man->drm_bus_maptype = _DRM_SCATTER_GATHER;
+			break;
+		default:
+			DRM_ERROR("Unknown GART type: %d\n",
+				  dev_priv->gart_info.type);
+			return -EINVAL;
+		}
+
+		man->io_offset  = dev_priv->gart_info.aper_base;
+		man->io_size    = dev_priv->gart_info.aper_size;
+		man->io_addr   = NULL;
+		break;
+	default:
+		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static uint32_t
+nouveau_bo_evict_mask(struct drm_buffer_object *bo)
+{
+	switch (bo->mem.mem_type) {
+	case DRM_BO_MEM_LOCAL:
+	case DRM_BO_MEM_TT:
+		return DRM_BO_FLAG_MEM_LOCAL;
+	default:
+		return DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_CACHED;
+	}
+	return 0;
+}
+
+/* GPU-assisted copy using NV_MEMORY_TO_MEMORY_FORMAT, can access
+ * DRM_BO_MEM_{VRAM,PRIV0,TT} directly.
+ */
+static int
+nouveau_bo_move_m2mf(struct drm_buffer_object *bo, int evict, int no_wait,
+		struct drm_bo_mem_reg *new_mem)
+{
+	struct drm_device *dev = bo->dev;
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct nouveau_drm_channel *dchan = &dev_priv->channel;
+	struct drm_bo_mem_reg *old_mem = &bo->mem;
+	uint32_t srch, dsth, page_count;
+
+	/* Can happen during init/takedown */
+	if (!dchan->chan)
+		return -EINVAL;
+
+	srch = old_mem->mem_type == DRM_BO_MEM_TT ? NvDmaTT : NvDmaFB;
+	dsth = new_mem->mem_type == DRM_BO_MEM_TT ? NvDmaTT : NvDmaFB;
+	if (srch != dchan->m2mf_dma_source || dsth != dchan->m2mf_dma_destin) {
+		dchan->m2mf_dma_source = srch;
+		dchan->m2mf_dma_destin = dsth;
+
+		BEGIN_RING(NvSubM2MF,
+			   NV_MEMORY_TO_MEMORY_FORMAT_SET_DMA_SOURCE, 2);
+		OUT_RING  (dchan->m2mf_dma_source);
+		OUT_RING  (dchan->m2mf_dma_destin);
+	}
+
+	page_count = new_mem->num_pages;
+	while (page_count) {
+		int line_count = (page_count > 2047) ? 2047 : page_count;
+
+		BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
+		OUT_RING  (old_mem->mm_node->start << PAGE_SHIFT);
+		OUT_RING  (new_mem->mm_node->start << PAGE_SHIFT);
+		OUT_RING  (PAGE_SIZE); /* src_pitch */
+		OUT_RING  (PAGE_SIZE); /* dst_pitch */
+		OUT_RING  (PAGE_SIZE); /* line_length */
+		OUT_RING  (line_count);
+		OUT_RING  ((1<<8)|(1<<0));
+		OUT_RING  (0);
+		BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
+		OUT_RING  (0);
+
+		page_count -= line_count;
+	}
+
+	return drm_bo_move_accel_cleanup(bo, evict, no_wait, dchan->chan->id,
+					 DRM_FENCE_TYPE_EXE, 0, new_mem);
+}
+
+static int
+nouveau_bo_move(struct drm_buffer_object *bo, int evict, int no_wait,
+		struct drm_bo_mem_reg *new_mem)
+{
+	struct drm_bo_mem_reg *old_mem = &bo->mem;
+
+	if (new_mem->mem_type == DRM_BO_MEM_LOCAL) {
+		if (old_mem->mem_type == DRM_BO_MEM_LOCAL)
+			return drm_bo_move_memcpy(bo, evict, no_wait, new_mem);
+#if 0
+		if (!nouveau_bo_move_flipd(bo, evict, no_wait, new_mem))
+#endif
+			return drm_bo_move_memcpy(bo, evict, no_wait, new_mem);
+	}
+	else
+	if (old_mem->mem_type == DRM_BO_MEM_LOCAL) {
+#if 0
+		if (nouveau_bo_move_flips(bo, evict, no_wait, new_mem))
+#endif
+			return drm_bo_move_memcpy(bo, evict, no_wait, new_mem);
+	}
+	else {
+//		if (nouveau_bo_move_m2mf(bo, evict, no_wait, new_mem))
+			return drm_bo_move_memcpy(bo, evict, no_wait, new_mem);
+	}
+	return 0;
+}
+
+static void
+nouveau_bo_flush_ttm(struct drm_ttm *ttm)
+{
+}
+
+static uint32_t nouveau_mem_prios[]  = {
+	DRM_BO_MEM_PRIV0,
+	DRM_BO_MEM_VRAM,
+	DRM_BO_MEM_TT,
+	DRM_BO_MEM_LOCAL
+};
+static uint32_t nouveau_busy_prios[] = {
+	DRM_BO_MEM_TT,
+	DRM_BO_MEM_PRIV0,
+	DRM_BO_MEM_VRAM,
+	DRM_BO_MEM_LOCAL
+};
+
+struct drm_bo_driver nouveau_bo_driver = {
+	.mem_type_prio = nouveau_mem_prios,
+	.mem_busy_prio = nouveau_busy_prios,
+	.num_mem_type_prio = sizeof(nouveau_mem_prios)/sizeof(uint32_t),
+	.num_mem_busy_prio = sizeof(nouveau_busy_prios)/sizeof(uint32_t),
+	.create_ttm_backend_entry = nouveau_bo_create_ttm_backend_entry,
+	.fence_type = nouveau_bo_fence_type,
+	.invalidate_caches = nouveau_bo_invalidate_caches,
+	.init_mem_type = nouveau_bo_init_mem_type,
+	.evict_mask = nouveau_bo_evict_mask,
+	.move = nouveau_bo_move,
+	.ttm_cache_flush= nouveau_bo_flush_ttm
+};