提交 7948758d 编写于 作者: B Ben Skeggs

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: NBen Skeggs <bskeggs@redhat.com>
上级 58e6c7a9
......@@ -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;
......
......@@ -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
......
......@@ -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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