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drm/nouveau/vm: perform a bar flush when flushing vm 

Appears to fix the regression from "drm/nvc0/vm: handle bar tlb flushes
internally".

nvidia always seems to do this flush after writing values.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Maarten Lankhorst 2013-06-11 14:17:25 +02:00 committed by Ben Skeggs
parent 57f0ec159b
commit 36798b61ed
2 changed files with 8 additions and 0 deletions
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4
drivers/gpu/drm/nouveau/core/subdev/vm/nv50.c
View File

@ -27,6 +27,7 @@
#include <subdev/timer.h>
#include <subdev/fb.h>
#include <subdev/bar.h>
#include <subdev/vm.h>
struct nv50_vmmgr_priv {
@ -151,9 +152,12 @@ static void
nv50_vm_flush(struct nouveau_vm *vm)
{
struct nv50_vmmgr_priv *priv = (void *)vm->vmm;
struct nouveau_bar *bar = nouveau_bar(priv);
struct nouveau_engine *engine;
int i, vme;
bar->flush(bar);
mutex_lock(&nv_subdev(priv)->mutex);
for (i = 0; i < NVDEV_SUBDEV_NR; i++) {
if (!atomic_read(&vm->engref[i]))

4
drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c
View File

@ -29,6 +29,7 @@
#include <subdev/fb.h>
#include <subdev/vm.h>
#include <subdev/ltcg.h>
#include <subdev/bar.h>
struct nvc0_vmmgr_priv {
struct nouveau_vmmgr base;
@ -163,9 +164,12 @@ static void
nvc0_vm_flush(struct nouveau_vm *vm)
{
struct nvc0_vmmgr_priv *priv = (void *)vm->vmm;
struct nouveau_bar *bar = nouveau_bar(priv);
struct nouveau_vm_pgd *vpgd;
u32 type;
bar->flush(bar);
type = 0x00000001; /* PAGE_ALL */
if (atomic_read(&vm->engref[NVDEV_SUBDEV_BAR]))
type |= 0x00000004; /* HUB_ONLY */