drm/nv50: implement global channel address space on new VM code
As of this commit, it's guaranteed that if an object is in VRAM that its
GPU virtual address will be constant.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_object.c b/drivers/gpu/drm/nouveau/nouveau_object.c
index dd1859f..573fd73 100644
--- a/drivers/gpu/drm/nouveau/nouveau_object.c
+++ b/drivers/gpu/drm/nouveau/nouveau_object.c
@@ -35,6 +35,7 @@
#include "nouveau_drv.h"
#include "nouveau_drm.h"
#include "nouveau_ramht.h"
+#include "nouveau_vm.h"
struct nouveau_gpuobj_method {
struct list_head head;
@@ -770,9 +771,8 @@
{
struct drm_device *dev = chan->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nouveau_instmem_engine *instmem = &dev_priv->engine.instmem;
struct nouveau_gpuobj *vram = NULL, *tt = NULL;
- int ret, i;
+ int ret;
NV_DEBUG(dev, "ch%d vram=0x%08x tt=0x%08x\n", chan->id, vram_h, tt_h);
@@ -783,16 +783,14 @@
return ret;
}
- /* NV50 VM
+ /* NV50/NVC0 VM
* - Allocate per-channel page-directory
- * - Map GART and VRAM into the channel's address space at the
- * locations determined during init.
+ * - Link with shared channel VM
*/
- if (dev_priv->card_type >= NV_50) {
+ if (dev_priv->chan_vm) {
u32 pgd_offs = (dev_priv->chipset == 0x50) ? 0x1400 : 0x0200;
u64 vm_vinst = chan->ramin->vinst + pgd_offs;
u32 vm_pinst = chan->ramin->pinst;
- u32 pde;
if (vm_pinst != ~0)
vm_pinst += pgd_offs;
@@ -801,29 +799,9 @@
0, &chan->vm_pd);
if (ret)
return ret;
- for (i = 0; i < 0x4000; i += 8) {
- nv_wo32(chan->vm_pd, i + 0, 0x00000000);
- nv_wo32(chan->vm_pd, i + 4, 0xdeadcafe);
- }
- nouveau_gpuobj_ref(dev_priv->gart_info.sg_ctxdma,
- &chan->vm_gart_pt);
- pde = (dev_priv->vm_gart_base / (512*1024*1024)) * 8;
- nv_wo32(chan->vm_pd, pde + 0, chan->vm_gart_pt->vinst | 3);
- nv_wo32(chan->vm_pd, pde + 4, 0x00000000);
-
- pde = (dev_priv->vm_vram_base / (512*1024*1024)) * 8;
- for (i = 0; i < dev_priv->vm_vram_pt_nr; i++) {
- nouveau_gpuobj_ref(dev_priv->vm_vram_pt[i],
- &chan->vm_vram_pt[i]);
-
- nv_wo32(chan->vm_pd, pde + 0,
- chan->vm_vram_pt[i]->vinst | 0x61);
- nv_wo32(chan->vm_pd, pde + 4, 0x00000000);
- pde += 8;
- }
-
- instmem->flush(dev);
+ nouveau_vm_ref(dev_priv->chan_vm, &chan->vm, chan->vm_pd);
+ chan->vm->map_pgt(chan->vm_pd, 12, 1, dev_priv->gart_info.sg_ctxdma);
}
/* RAMHT */
@@ -846,8 +824,7 @@
/* VRAM ctxdma */
if (dev_priv->card_type >= NV_50) {
ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY,
- 0, dev_priv->vm_end,
- NV_MEM_ACCESS_RW,
+ 0, (1ULL << 40), NV_MEM_ACCESS_RW,
NV_MEM_TARGET_VM, &vram);
if (ret) {
NV_ERROR(dev, "Error creating VRAM ctxdma: %d\n", ret);
@@ -874,8 +851,7 @@
/* TT memory ctxdma */
if (dev_priv->card_type >= NV_50) {
ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY,
- 0, dev_priv->vm_end,
- NV_MEM_ACCESS_RW,
+ 0, (1ULL << 40), NV_MEM_ACCESS_RW,
NV_MEM_TARGET_VM, &tt);
} else {
ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY,
@@ -902,9 +878,7 @@
void
nouveau_gpuobj_channel_takedown(struct nouveau_channel *chan)
{
- struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
struct drm_device *dev = chan->dev;
- int i;
NV_DEBUG(dev, "ch%d\n", chan->id);
@@ -913,10 +887,9 @@
nouveau_ramht_ref(NULL, &chan->ramht, chan);
+ nouveau_vm_ref(NULL, &chan->vm, chan->vm_pd);
nouveau_gpuobj_ref(NULL, &chan->vm_pd);
nouveau_gpuobj_ref(NULL, &chan->vm_gart_pt);
- for (i = 0; i < dev_priv->vm_vram_pt_nr; i++)
- nouveau_gpuobj_ref(NULL, &chan->vm_vram_pt[i]);
if (chan->ramin_heap.free_stack.next)
drm_mm_takedown(&chan->ramin_heap);