From 7948758d27be1b69b6a79ed4f3f22e36a3b95965 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
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 <bskeggs@redhat.com>
---
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 b36dc351f8eb6..1c6279f588ba2 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 fd2093c31e68d..a2b89bf0ada19 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 f3d9c0505f7bb..f0ac2a768c670 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:
--
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