From 7948758d27be1b69b6a79ed4f3f22e36a3b95965 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 11 Jan 2011 14:52:40 +1000 Subject: [PATCH] drm/nv40: implement support for on-chip PCIEGART v2. moved nv44 pciegart table back to instmem, where it's not accessible by userspace clients. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_drv.h | 7 + drivers/gpu/drm/nouveau/nouveau_sgdma.c | 290 ++++++++++++++++++++++-- drivers/gpu/drm/nouveau/nv40_fb.c | 59 ++++- 3 files changed, 330 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h index b36dc351f8eb..1c6279f588ba 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.h +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h @@ -699,6 +699,13 @@ struct drm_nouveau_private { uint64_t aper_size; uint64_t aper_free; + struct ttm_backend_func *func; + + struct { + struct page *page; + dma_addr_t addr; + } dummy; + struct nouveau_gpuobj *sg_ctxdma; struct nouveau_vma vma; } gart_info; diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c index fd2093c31e68..a2b89bf0ada1 100644 --- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c +++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c @@ -164,6 +164,213 @@ static struct ttm_backend_func nv04_sgdma_backend = { .destroy = nouveau_sgdma_destroy }; +static void +nv41_sgdma_flush(struct nouveau_sgdma_be *nvbe) +{ + struct drm_device *dev = nvbe->dev; + + nv_wr32(dev, 0x100810, 0x00000022); + if (!nv_wait(dev, 0x100810, 0x00000100, 0x00000100)) + NV_ERROR(dev, "vm flush timeout: 0x%08x\n", + nv_rd32(dev, 0x100810)); + nv_wr32(dev, 0x100810, 0x00000000); +} + +static int +nv41_sgdma_bind(struct ttm_backend *be, struct ttm_mem_reg *mem) +{ + struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be; + struct drm_nouveau_private *dev_priv = nvbe->dev->dev_private; + struct nouveau_gpuobj *pgt = dev_priv->gart_info.sg_ctxdma; + dma_addr_t *list = nvbe->pages; + u32 pte = mem->start << 2; + u32 cnt = nvbe->nr_pages; + + nvbe->offset = mem->start << PAGE_SHIFT; + + while (cnt--) { + nv_wo32(pgt, pte, (*list++ >> 7) | 1); + pte += 4; + } + + nv41_sgdma_flush(nvbe); + nvbe->bound = true; + return 0; +} + +static int +nv41_sgdma_unbind(struct ttm_backend *be) +{ + struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be; + struct drm_nouveau_private *dev_priv = nvbe->dev->dev_private; + struct nouveau_gpuobj *pgt = dev_priv->gart_info.sg_ctxdma; + u32 pte = (nvbe->offset >> 12) << 2; + u32 cnt = nvbe->nr_pages; + + while (cnt--) { + nv_wo32(pgt, pte, 0x00000000); + pte += 4; + } + + nv41_sgdma_flush(nvbe); + nvbe->bound = false; + return 0; +} + +static struct ttm_backend_func nv41_sgdma_backend = { + .populate = nouveau_sgdma_populate, + .clear = nouveau_sgdma_clear, + .bind = nv41_sgdma_bind, + .unbind = nv41_sgdma_unbind, + .destroy = nouveau_sgdma_destroy +}; + +static void +nv44_sgdma_flush(struct nouveau_sgdma_be *nvbe) +{ + struct drm_device *dev = nvbe->dev; + + nv_wr32(dev, 0x100814, (nvbe->nr_pages - 1) << 12); + nv_wr32(dev, 0x100808, nvbe->offset | 0x20); + if (!nv_wait(dev, 0x100808, 0x00000001, 0x00000001)) + NV_ERROR(dev, "gart flush timeout: 0x%08x\n", + nv_rd32(dev, 0x100808)); + nv_wr32(dev, 0x100808, 0x00000000); +} + +static void +nv44_sgdma_fill(struct nouveau_gpuobj *pgt, dma_addr_t *list, u32 base, u32 cnt) +{ + struct drm_nouveau_private *dev_priv = pgt->dev->dev_private; + dma_addr_t dummy = dev_priv->gart_info.dummy.addr; + u32 pte, tmp[4]; + + pte = base >> 2; + base &= ~0x0000000f; + + tmp[0] = nv_ro32(pgt, base + 0x0); + tmp[1] = nv_ro32(pgt, base + 0x4); + tmp[2] = nv_ro32(pgt, base + 0x8); + tmp[3] = nv_ro32(pgt, base + 0xc); + while (cnt--) { + u32 addr = list ? (*list++ >> 12) : (dummy >> 12); + switch (pte++ & 0x3) { + case 0: + tmp[0] &= ~0x07ffffff; + tmp[0] |= addr; + break; + case 1: + tmp[0] &= ~0xf8000000; + tmp[0] |= addr << 27; + tmp[1] &= ~0x003fffff; + tmp[1] |= addr >> 5; + break; + case 2: + tmp[1] &= ~0xffc00000; + tmp[1] |= addr << 22; + tmp[2] &= ~0x0001ffff; + tmp[2] |= addr >> 10; + break; + case 3: + tmp[2] &= ~0xfffe0000; + tmp[2] |= addr << 17; + tmp[3] &= ~0x00000fff; + tmp[3] |= addr >> 15; + break; + } + } + + tmp[3] |= 0x40000000; + + nv_wo32(pgt, base + 0x0, tmp[0]); + nv_wo32(pgt, base + 0x4, tmp[1]); + nv_wo32(pgt, base + 0x8, tmp[2]); + nv_wo32(pgt, base + 0xc, tmp[3]); +} + +static int +nv44_sgdma_bind(struct ttm_backend *be, struct ttm_mem_reg *mem) +{ + struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be; + struct drm_nouveau_private *dev_priv = nvbe->dev->dev_private; + struct nouveau_gpuobj *pgt = dev_priv->gart_info.sg_ctxdma; + dma_addr_t *list = nvbe->pages; + u32 pte = mem->start << 2, tmp[4]; + u32 cnt = nvbe->nr_pages; + int i; + + nvbe->offset = mem->start << PAGE_SHIFT; + + if (pte & 0x0000000c) { + u32 max = 4 - ((pte >> 2) & 0x3); + u32 part = (cnt > max) ? max : cnt; + nv44_sgdma_fill(pgt, list, pte, part); + pte += (part << 2); + list += part; + cnt -= part; + } + + while (cnt >= 4) { + for (i = 0; i < 4; i++) + tmp[i] = *list++ >> 12; + nv_wo32(pgt, pte + 0x0, tmp[0] >> 0 | tmp[1] << 27); + nv_wo32(pgt, pte + 0x4, tmp[1] >> 5 | tmp[2] << 22); + nv_wo32(pgt, pte + 0x8, tmp[2] >> 10 | tmp[3] << 17); + nv_wo32(pgt, pte + 0xc, tmp[3] >> 15 | 0x40000000); + pte += 0x10; + cnt -= 4; + } + + if (cnt) + nv44_sgdma_fill(pgt, list, pte, cnt); + + nv44_sgdma_flush(nvbe); + nvbe->bound = true; + return 0; +} + +static int +nv44_sgdma_unbind(struct ttm_backend *be) +{ + struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)be; + struct drm_nouveau_private *dev_priv = nvbe->dev->dev_private; + struct nouveau_gpuobj *pgt = dev_priv->gart_info.sg_ctxdma; + u32 pte = (nvbe->offset >> 12) << 2; + u32 cnt = nvbe->nr_pages; + + if (pte & 0x0000000c) { + u32 max = 4 - ((pte >> 2) & 0x3); + u32 part = (cnt > max) ? max : cnt; + nv44_sgdma_fill(pgt, NULL, pte, part); + pte += (part << 2); + cnt -= part; + } + + while (cnt >= 4) { + nv_wo32(pgt, pte + 0x0, 0x00000000); + nv_wo32(pgt, pte + 0x4, 0x00000000); + nv_wo32(pgt, pte + 0x8, 0x00000000); + nv_wo32(pgt, pte + 0xc, 0x00000000); + pte += 0x10; + cnt -= 4; + } + + if (cnt) + nv44_sgdma_fill(pgt, NULL, pte, cnt); + + nv44_sgdma_flush(nvbe); + nvbe->bound = false; + return 0; +} + +static struct ttm_backend_func nv44_sgdma_backend = { + .populate = nouveau_sgdma_populate, + .clear = nouveau_sgdma_clear, + .bind = nv44_sgdma_bind, + .unbind = nv44_sgdma_unbind, + .destroy = nouveau_sgdma_destroy +}; + static int nv50_sgdma_bind(struct ttm_backend *be, struct ttm_mem_reg *mem) { @@ -213,10 +420,7 @@ nouveau_sgdma_init_ttm(struct drm_device *dev) nvbe->dev = dev; - if (dev_priv->card_type >= NV_50) - nvbe->backend.func = &nv50_sgdma_backend; - else - nvbe->backend.func = &nv04_sgdma_backend; + nvbe->backend.func = dev_priv->gart_info.func; return &nvbe->backend; } @@ -225,31 +429,71 @@ nouveau_sgdma_init(struct drm_device *dev) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct nouveau_gpuobj *gpuobj = NULL; - uint32_t aper_size, obj_size; - int i, ret; + u32 aper_size, align; + int ret; + + if (dev_priv->card_type >= NV_50 || + dev_priv->ramin_rsvd_vram >= 2 * 1024 * 1024) + aper_size = 512 * 1024 * 1024; + else + aper_size = 64 * 1024 * 1024; + + /* Dear NVIDIA, NV44+ would like proper present bits in PTEs for + * christmas. The cards before it have them, the cards after + * it have them, why is NV44 so unloved? + */ + dev_priv->gart_info.dummy.page = alloc_page(GFP_DMA32 | GFP_KERNEL); + if (!dev_priv->gart_info.dummy.page) + return -ENOMEM; + + dev_priv->gart_info.dummy.addr = + pci_map_page(dev->pdev, dev_priv->gart_info.dummy.page, + 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); + if (pci_dma_mapping_error(dev->pdev, dev_priv->gart_info.dummy.addr)) { + NV_ERROR(dev, "error mapping dummy page\n"); + __free_page(dev_priv->gart_info.dummy.page); + dev_priv->gart_info.dummy.page = NULL; + return -ENOMEM; + } if (dev_priv->card_type >= NV_50) { - ret = nouveau_vm_get(dev_priv->chan_vm, 512 * 1024 * 1024, + ret = nouveau_vm_get(dev_priv->chan_vm, aper_size, 12, NV_MEM_ACCESS_RW, &dev_priv->gart_info.vma); if (ret) return ret; dev_priv->gart_info.aper_base = dev_priv->gart_info.vma.offset; - dev_priv->gart_info.aper_size = 512 * 1024 * 1024; + dev_priv->gart_info.aper_size = aper_size; dev_priv->gart_info.type = NOUVEAU_GART_HW; - } else { - if(dev_priv->ramin_rsvd_vram < 2 * 1024 * 1024) - aper_size = 64 * 1024 * 1024; - else - aper_size = 512 * 1024 * 1024; + dev_priv->gart_info.func = &nv50_sgdma_backend; + } else + if (drm_pci_device_is_pcie(dev) && + dev_priv->chipset != 0x40 && dev_priv->chipset != 0x45) { + if (nv44_graph_class(dev)) { + dev_priv->gart_info.func = &nv44_sgdma_backend; + align = 512 * 1024; + } else { + dev_priv->gart_info.func = &nv41_sgdma_backend; + align = 16; + } - obj_size = (aper_size >> NV_CTXDMA_PAGE_SHIFT) * 4; - obj_size += 8; /* ctxdma header */ + ret = nouveau_gpuobj_new(dev, NULL, aper_size / 1024, align, + NVOBJ_FLAG_ZERO_ALLOC | + NVOBJ_FLAG_ZERO_FREE, &gpuobj); + if (ret) { + NV_ERROR(dev, "Error creating sgdma object: %d\n", ret); + return ret; + } - ret = nouveau_gpuobj_new(dev, NULL, obj_size, 16, - NVOBJ_FLAG_ZERO_ALLOC | - NVOBJ_FLAG_ZERO_FREE, &gpuobj); + dev_priv->gart_info.sg_ctxdma = gpuobj; + dev_priv->gart_info.aper_base = 0; + dev_priv->gart_info.aper_size = aper_size; + dev_priv->gart_info.type = NOUVEAU_GART_HW; + } else { + ret = nouveau_gpuobj_new(dev, NULL, (aper_size / 1024) + 8, 16, + NVOBJ_FLAG_ZERO_ALLOC | + NVOBJ_FLAG_ZERO_FREE, &gpuobj); if (ret) { NV_ERROR(dev, "Error creating sgdma object: %d\n", ret); return ret; @@ -261,13 +505,12 @@ nouveau_sgdma_init(struct drm_device *dev) (0 << 14) /* RW */ | (2 << 16) /* PCI */); nv_wo32(gpuobj, 4, aper_size - 1); - for (i = 2; i < 2 + (aper_size >> 12); i++) - nv_wo32(gpuobj, i * 4, 0x00000000); dev_priv->gart_info.sg_ctxdma = gpuobj; dev_priv->gart_info.aper_base = 0; dev_priv->gart_info.aper_size = aper_size; dev_priv->gart_info.type = NOUVEAU_GART_PDMA; + dev_priv->gart_info.func = &nv04_sgdma_backend; } return 0; @@ -280,6 +523,13 @@ nouveau_sgdma_takedown(struct drm_device *dev) nouveau_gpuobj_ref(NULL, &dev_priv->gart_info.sg_ctxdma); nouveau_vm_put(&dev_priv->gart_info.vma); + + if (dev_priv->gart_info.dummy.page) { + pci_unmap_page(dev->pdev, dev_priv->gart_info.dummy.addr, + PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); + __free_page(dev_priv->gart_info.dummy.page); + dev_priv->gart_info.dummy.page = NULL; + } } uint32_t diff --git a/drivers/gpu/drm/nouveau/nv40_fb.c b/drivers/gpu/drm/nouveau/nv40_fb.c index f3d9c0505f7b..f0ac2a768c67 100644 --- a/drivers/gpu/drm/nouveau/nv40_fb.c +++ b/drivers/gpu/drm/nouveau/nv40_fb.c @@ -24,6 +24,53 @@ nv40_fb_set_tile_region(struct drm_device *dev, int i) } } +static void +nv40_fb_init_gart(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_gpuobj *gart = dev_priv->gart_info.sg_ctxdma; + + if (dev_priv->gart_info.type != NOUVEAU_GART_HW) { + nv_wr32(dev, 0x100800, 0x00000001); + return; + } + + nv_wr32(dev, 0x100800, gart->pinst | 0x00000002); + nv_mask(dev, 0x10008c, 0x00000100, 0x00000100); + nv_wr32(dev, 0x100820, 0x00000000); +} + +static void +nv44_fb_init_gart(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_gpuobj *gart = dev_priv->gart_info.sg_ctxdma; + u32 vinst; + + if (dev_priv->gart_info.type != NOUVEAU_GART_HW) { + nv_wr32(dev, 0x100850, 0x80000000); + nv_wr32(dev, 0x100800, 0x00000001); + return; + } + + /* calculate vram address of this PRAMIN block, object + * must be allocated on 512KiB alignment, and not exceed + * a total size of 512KiB for this to work correctly + */ + vinst = nv_rd32(dev, 0x10020c); + vinst -= ((gart->pinst >> 19) + 1) << 19; + + nv_wr32(dev, 0x100850, 0x80000000); + nv_wr32(dev, 0x100818, dev_priv->gart_info.dummy.addr); + + nv_wr32(dev, 0x100804, dev_priv->gart_info.aper_size); + nv_wr32(dev, 0x100850, 0x00008000); + nv_mask(dev, 0x10008c, 0x00000200, 0x00000200); + nv_wr32(dev, 0x100820, 0x00000000); + nv_wr32(dev, 0x10082c, 0x00000001); + nv_wr32(dev, 0x100800, vinst | 0x00000010); +} + int nv40_fb_init(struct drm_device *dev) { @@ -32,12 +79,12 @@ nv40_fb_init(struct drm_device *dev) uint32_t tmp; int i; - /* This is strictly a NV4x register (don't know about NV5x). */ - /* The blob sets these to all kinds of values, and they mess up our setup. */ - /* I got value 0x52802 instead. For some cards the blob even sets it back to 0x1. */ - /* Note: the blob doesn't read this value, so i'm pretty sure this is safe for all cards. */ - /* Any idea what this is? */ - nv_wr32(dev, NV40_PFB_UNK_800, 0x1); + if (dev_priv->chipset != 0x40 && dev_priv->chipset != 0x45) { + if (nv44_graph_class(dev)) + nv44_fb_init_gart(dev); + else + nv40_fb_init_gart(dev); + } switch (dev_priv->chipset) { case 0x40: -- 2.20.1