1 files changed, 69 insertions, 285 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
index d4ac9700703..a4d22e5eb17 100644
--- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c
+++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
@@ -1,331 +1,115 @@
-#include "drmP.h"
-#include "nouveau_drv.h"
 #include <linux/pagemap.h>
 #include <linux/slab.h>
 
-#define NV_CTXDMA_PAGE_SHIFT 12
-#define NV_CTXDMA_PAGE_SIZE  (1 << NV_CTXDMA_PAGE_SHIFT)
-#define NV_CTXDMA_PAGE_MASK  (NV_CTXDMA_PAGE_SIZE - 1)
+#include <subdev/fb.h>
+
+#include "nouveau_drm.h"
+#include "nouveau_ttm.h"
 
 struct nouveau_sgdma_be {
-	struct ttm_backend backend;
+	/* this has to be the first field so populate/unpopulated in
+	 * nouve_bo.c works properly, otherwise have to move them here
+	 */
+	struct ttm_dma_tt ttm;
 	struct drm_device *dev;
-
-	dma_addr_t *pages;
-	unsigned nr_pages;
-
-	unsigned pte_start;
-	bool bound;
+	struct nouveau_mem *node;
 };
 
-static int
-nouveau_sgdma_populate(struct ttm_backend *be, unsigned long num_pages,
-		       struct page **pages, struct page *dummy_read_page)
-{
-	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be;
-	struct drm_device *dev = nvbe->dev;
-
-	NV_DEBUG(nvbe->dev, "num_pages = %ld\n", num_pages);
-
-	if (nvbe->pages)
-		return -EINVAL;
-
-	nvbe->pages = kmalloc(sizeof(dma_addr_t) * num_pages, GFP_KERNEL);
-	if (!nvbe->pages)
-		return -ENOMEM;
-
-	nvbe->nr_pages = 0;
-	while (num_pages--) {
-		nvbe->pages[nvbe->nr_pages] =
-			pci_map_page(dev->pdev, pages[nvbe->nr_pages], 0,
-				     PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
-		if (pci_dma_mapping_error(dev->pdev,
-					  nvbe->pages[nvbe->nr_pages])) {
-			be->func->clear(be);
-			return -EFAULT;
-		}
-
-		nvbe->nr_pages++;
-	}
-
-	return 0;
-}
-
 static void
-nouveau_sgdma_clear(struct ttm_backend *be)
+nouveau_sgdma_destroy(struct ttm_tt *ttm)
 {
-	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be;
-	struct drm_device *dev;
+	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
 
-	if (nvbe && nvbe->pages) {
-		dev = nvbe->dev;
-		NV_DEBUG(dev, "\n");
-
-		if (nvbe->bound)
-			be->func->unbind(be);
-
-		while (nvbe->nr_pages--) {
-			pci_unmap_page(dev->pdev, nvbe->pages[nvbe->nr_pages],
-				       PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
-		}
-		kfree(nvbe->pages);
-		nvbe->pages = NULL;
-		nvbe->nr_pages = 0;
+	if (ttm) {
+		ttm_dma_tt_fini(&nvbe->ttm);
+		kfree(nvbe);
 	}
 }
 
-static inline unsigned
-nouveau_sgdma_pte(struct drm_device *dev, uint64_t offset)
-{
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	unsigned pte = (offset >> NV_CTXDMA_PAGE_SHIFT);
-
-	if (dev_priv->card_type < NV_50)
-		return pte + 2;
-
-	return pte << 1;
-}
-
 static int
-nouveau_sgdma_bind(struct ttm_backend *be, struct ttm_mem_reg *mem)
+nv04_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
 {
-	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be;
-	struct drm_device *dev = nvbe->dev;
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	struct nouveau_gpuobj *gpuobj = dev_priv->gart_info.sg_ctxdma;
-	unsigned i, j, pte;
-
-	NV_DEBUG(dev, "pg=0x%lx\n", mem->start);
-
-	pte = nouveau_sgdma_pte(nvbe->dev, mem->start << PAGE_SHIFT);
-	nvbe->pte_start = pte;
-	for (i = 0; i < nvbe->nr_pages; i++) {
-		dma_addr_t dma_offset = nvbe->pages[i];
-		uint32_t offset_l = lower_32_bits(dma_offset);
-		uint32_t offset_h = upper_32_bits(dma_offset);
-
-		for (j = 0; j < PAGE_SIZE / NV_CTXDMA_PAGE_SIZE; j++) {
-			if (dev_priv->card_type < NV_50) {
-				nv_wo32(gpuobj, (pte * 4) + 0, offset_l | 3);
-				pte += 1;
-			} else {
-				nv_wo32(gpuobj, (pte * 4) + 0, offset_l | 0x21);
-				nv_wo32(gpuobj, (pte * 4) + 4, offset_h & 0xff);
-				pte += 2;
-			}
+	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
+	struct nouveau_mem *node = mem->mm_node;
 
-			dma_offset += NV_CTXDMA_PAGE_SIZE;
-		}
-	}
-	dev_priv->engine.instmem.flush(nvbe->dev);
-
-	if (dev_priv->card_type == NV_50) {
-		dev_priv->engine.fifo.tlb_flush(dev);
-		dev_priv->engine.graph.tlb_flush(dev);
+	if (ttm->sg) {
+		node->sg    = ttm->sg;
+		node->pages = NULL;
+	} else {
+		node->sg    = NULL;
+		node->pages = nvbe->ttm.dma_address;
 	}
+	node->size = (mem->num_pages << PAGE_SHIFT) >> 12;
 
-	nvbe->bound = true;
+	nouveau_vm_map(&node->vma[0], node);
+	nvbe->node = node;
 	return 0;
 }
 
 static int
-nouveau_sgdma_unbind(struct ttm_backend *be)
+nv04_sgdma_unbind(struct ttm_tt *ttm)
 {
-	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be;
-	struct drm_device *dev = nvbe->dev;
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	struct nouveau_gpuobj *gpuobj = dev_priv->gart_info.sg_ctxdma;
-	unsigned i, j, pte;
-
-	NV_DEBUG(dev, "\n");
-
-	if (!nvbe->bound)
-		return 0;
-
-	pte = nvbe->pte_start;
-	for (i = 0; i < nvbe->nr_pages; i++) {
-		dma_addr_t dma_offset = dev_priv->gart_info.sg_dummy_bus;
+	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
+	nouveau_vm_unmap(&nvbe->node->vma[0]);
+	return 0;
+}
 
-		for (j = 0; j < PAGE_SIZE / NV_CTXDMA_PAGE_SIZE; j++) {
-			if (dev_priv->card_type < NV_50) {
-				nv_wo32(gpuobj, (pte * 4) + 0, dma_offset | 3);
-				pte += 1;
-			} else {
-				nv_wo32(gpuobj, (pte * 4) + 0, 0x00000000);
-				nv_wo32(gpuobj, (pte * 4) + 4, 0x00000000);
-				pte += 2;
-			}
+static struct ttm_backend_func nv04_sgdma_backend = {
+	.bind			= nv04_sgdma_bind,
+	.unbind			= nv04_sgdma_unbind,
+	.destroy		= nouveau_sgdma_destroy
+};
 
-			dma_offset += NV_CTXDMA_PAGE_SIZE;
-		}
-	}
-	dev_priv->engine.instmem.flush(nvbe->dev);
+static int
+nv50_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
+{
+	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
+	struct nouveau_mem *node = mem->mm_node;
 
-	if (dev_priv->card_type == NV_50) {
-		dev_priv->engine.fifo.tlb_flush(dev);
-		dev_priv->engine.graph.tlb_flush(dev);
+	/* noop: bound in move_notify() */
+	if (ttm->sg) {
+		node->sg    = ttm->sg;
+		node->pages = NULL;
+	} else {
+		node->sg    = NULL;
+		node->pages = nvbe->ttm.dma_address;
 	}
-
-	nvbe->bound = false;
+	node->size = (mem->num_pages << PAGE_SHIFT) >> 12;
 	return 0;
 }
 
-static void
-nouveau_sgdma_destroy(struct ttm_backend *be)
+static int
+nv50_sgdma_unbind(struct ttm_tt *ttm)
 {
-	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be;
-
-	if (be) {
-		NV_DEBUG(nvbe->dev, "\n");
-
-		if (nvbe) {
-			if (nvbe->pages)
-				be->func->clear(be);
-			kfree(nvbe);
-		}
-	}
+	/* noop: unbound in move_notify() */
+	return 0;
 }
 
-static struct ttm_backend_func nouveau_sgdma_backend = {
-	.populate		= nouveau_sgdma_populate,
-	.clear			= nouveau_sgdma_clear,
-	.bind			= nouveau_sgdma_bind,
-	.unbind			= nouveau_sgdma_unbind,
+static struct ttm_backend_func nv50_sgdma_backend = {
+	.bind			= nv50_sgdma_bind,
+	.unbind			= nv50_sgdma_unbind,
 	.destroy		= nouveau_sgdma_destroy
 };
 
-struct ttm_backend *
-nouveau_sgdma_init_ttm(struct drm_device *dev)
+struct ttm_tt *
+nouveau_sgdma_create_ttm(struct ttm_bo_device *bdev,
+			 unsigned long size, uint32_t page_flags,
+			 struct page *dummy_read_page)
 {
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct nouveau_drm *drm = nouveau_bdev(bdev);
 	struct nouveau_sgdma_be *nvbe;
 
-	if (!dev_priv->gart_info.sg_ctxdma)
-		return NULL;
-
 	nvbe = kzalloc(sizeof(*nvbe), GFP_KERNEL);
 	if (!nvbe)
 		return NULL;
 
-	nvbe->dev = dev;
-
-	nvbe->backend.func	= &nouveau_sgdma_backend;
-
-	return &nvbe->backend;
-}
-
-int
-nouveau_sgdma_init(struct drm_device *dev)
-{
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	struct pci_dev *pdev = dev->pdev;
-	struct nouveau_gpuobj *gpuobj = NULL;
-	uint32_t aper_size, obj_size;
-	int i, ret;
-
-	if (dev_priv->card_type < NV_50) {
-		if(dev_priv->ramin_rsvd_vram < 2 * 1024 * 1024)
-			aper_size = 64 * 1024 * 1024;
-		else
-			aper_size = 512 * 1024 * 1024;
-
-		obj_size  = (aper_size >> NV_CTXDMA_PAGE_SHIFT) * 4;
-		obj_size += 8; /* ctxdma header */
-	} else {
-		/* 1 entire VM page table */
-		aper_size = (512 * 1024 * 1024);
-		obj_size  = (aper_size >> NV_CTXDMA_PAGE_SHIFT) * 8;
-	}
-
-	ret = nouveau_gpuobj_new(dev, NULL, obj_size, 16,
-				      NVOBJ_FLAG_ZERO_ALLOC |
-				      NVOBJ_FLAG_ZERO_FREE, &gpuobj);
-	if (ret) {
-		NV_ERROR(dev, "Error creating sgdma object: %d\n", ret);
-		return ret;
-	}
-
-	dev_priv->gart_info.sg_dummy_page =
-		alloc_page(GFP_KERNEL|__GFP_DMA32|__GFP_ZERO);
-	if (!dev_priv->gart_info.sg_dummy_page) {
-		nouveau_gpuobj_ref(NULL, &gpuobj);
-		return -ENOMEM;
-	}
+	nvbe->dev = drm->dev;
+	if (nv_device(drm->device)->card_type < NV_50)
+		nvbe->ttm.ttm.func = &nv04_sgdma_backend;
+	else
+		nvbe->ttm.ttm.func = &nv50_sgdma_backend;
 
-	set_bit(PG_locked, &dev_priv->gart_info.sg_dummy_page->flags);
-	dev_priv->gart_info.sg_dummy_bus =
-		pci_map_page(pdev, dev_priv->gart_info.sg_dummy_page, 0,
-			     PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
-	if (pci_dma_mapping_error(pdev, dev_priv->gart_info.sg_dummy_bus)) {
-		nouveau_gpuobj_ref(NULL, &gpuobj);
-		return -EFAULT;
-	}
-
-	if (dev_priv->card_type < NV_50) {
-		/* special case, allocated from global instmem heap so
-		 * cinst is invalid, we use it on all channels though so
-		 * cinst needs to be valid, set it the same as pinst
-		 */
-		gpuobj->cinst = gpuobj->pinst;
-
-		/* Maybe use NV_DMA_TARGET_AGP for PCIE? NVIDIA do this, and
-		 * confirmed to work on c51.  Perhaps means NV_DMA_TARGET_PCIE
-		 * on those cards? */
-		nv_wo32(gpuobj, 0, NV_CLASS_DMA_IN_MEMORY |
-				   (1 << 12) /* PT present */ |
-				   (0 << 13) /* PT *not* linear */ |
-				   (NV_DMA_ACCESS_RW  << 14) |
-				   (NV_DMA_TARGET_PCI << 16));
-		nv_wo32(gpuobj, 4, aper_size - 1);
-		for (i = 2; i < 2 + (aper_size >> 12); i++) {
-			nv_wo32(gpuobj, i * 4,
-				dev_priv->gart_info.sg_dummy_bus | 3);
-		}
-	} else {
-		for (i = 0; i < obj_size; i += 8) {
-			nv_wo32(gpuobj, i + 0, 0x00000000);
-			nv_wo32(gpuobj, i + 4, 0x00000000);
-		}
-	}
-	dev_priv->engine.instmem.flush(dev);
-
-	dev_priv->gart_info.type      = NOUVEAU_GART_SGDMA;
-	dev_priv->gart_info.aper_base = 0;
-	dev_priv->gart_info.aper_size = aper_size;
-	dev_priv->gart_info.sg_ctxdma = gpuobj;
-	return 0;
-}
-
-void
-nouveau_sgdma_takedown(struct drm_device *dev)
-{
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-
-	if (dev_priv->gart_info.sg_dummy_page) {
-		pci_unmap_page(dev->pdev, dev_priv->gart_info.sg_dummy_bus,
-			       NV_CTXDMA_PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
-		unlock_page(dev_priv->gart_info.sg_dummy_page);
-		__free_page(dev_priv->gart_info.sg_dummy_page);
-		dev_priv->gart_info.sg_dummy_page = NULL;
-		dev_priv->gart_info.sg_dummy_bus = 0;
-	}
-
-	nouveau_gpuobj_ref(NULL, &dev_priv->gart_info.sg_ctxdma);
-}
-
-int
-nouveau_sgdma_get_page(struct drm_device *dev, uint32_t offset, uint32_t *page)
-{
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-	struct nouveau_gpuobj *gpuobj = dev_priv->gart_info.sg_ctxdma;
-	int pte;
-
-	pte = (offset >> NV_CTXDMA_PAGE_SHIFT) << 2;
-	if (dev_priv->card_type < NV_50) {
-		*page = nv_ro32(gpuobj, (pte + 8)) & ~NV_CTXDMA_PAGE_MASK;
-		return 0;
-	}
-
-	NV_ERROR(dev, "Unimplemented on NV50\n");
-	return -EINVAL;
+	if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page))
+		return NULL;
+	return &nvbe->ttm.ttm;
 }