drm/nouveau/bar: modify interface to bar2 vmm mapping

Match API with the BAR1 version.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

7 files changed, 29 insertions, 27 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c
index 5a80cf5f9eb0..d600aafae315 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/base.c
@@ -30,19 +30,22 @@ nvkm_bar_flush(struct nvkm_bar *bar)
 		bar->func->flush(bar);
 }
 
-struct nvkm_vm *
-nvkm_bar_kmap(struct nvkm_bar *bar)
+struct nvkm_vmm *
+nvkm_bar_bar1_vmm(struct nvkm_device *device)
 {
-	/* disallow kmap() until after vm has been bootstrapped */
-	if (bar && bar->func->kmap && bar->subdev.oneinit)
-		return bar->func->kmap(bar);
-	return NULL;
+	return device->bar->func->bar1.vmm(device->bar);
 }
 
 struct nvkm_vmm *
-nvkm_bar_bar1_vmm(struct nvkm_device *device)
+nvkm_bar_bar2_vmm(struct nvkm_device *device)
 {
-	return device->bar->func->bar1.vmm(device->bar);
+	/* Denies access to BAR2 when it's not initialised, used by INSTMEM
+	 * to know when object access needs to go through the BAR0 window.
+	 */
+	struct nvkm_bar *bar = device->bar;
+	if (bar && bar->func->bar2.vmm && bar->subdev.oneinit)
+		return bar->func->bar2.vmm(bar);
+	return NULL;
 }
 
 void
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c
index f88f5d6e64b9..87f26f54b481 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c
@@ -51,7 +51,7 @@ g84_bar_func = {
 	.bar2.init = nv50_bar_bar2_init,
 	.bar2.fini = nv50_bar_bar2_fini,
 	.bar2.wait = nv50_bar_bar1_wait,
-	.kmap = nv50_bar_kmap,
+	.bar2.vmm = nv50_bar_bar2_vmm,
 	.flush = g84_bar_flush,
 };
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c
index 379fa339dbaf..c6317a0f04a7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c
@@ -28,12 +28,6 @@
 #include <subdev/fb.h>
 #include <subdev/mmu.h>
 
-static struct nvkm_vm *
-gf100_bar_kmap(struct nvkm_bar *base)
-{
-	return gf100_bar(base)->bar[0].vm;
-}
-
 struct nvkm_vmm *
 gf100_bar_bar1_vmm(struct nvkm_bar *base)
 {
@@ -63,6 +57,12 @@ gf100_bar_bar1_init(struct nvkm_bar *base)
 	nvkm_wr32(device, 0x001704, 0x80000000 | addr);
 }
 
+struct nvkm_vmm *
+gf100_bar_bar2_vmm(struct nvkm_bar *base)
+{
+	return gf100_bar(base)->bar[0].vm;
+}
+
 void
 gf100_bar_bar2_fini(struct nvkm_bar *bar)
 {
@@ -142,7 +142,7 @@ gf100_bar_oneinit(struct nvkm_bar *base)
 	int ret;
 
 	/* BAR2 */
-	if (bar->base.func->kmap) {
+	if (bar->base.func->bar2.init) {
 		ret = gf100_bar_oneinit_bar(bar, &bar->bar[0], &bar2_lock, 3);
 		if (ret)
 			return ret;
@@ -198,7 +198,7 @@ gf100_bar_func = {
 	.bar2.init = gf100_bar_bar2_init,
 	.bar2.fini = gf100_bar_bar2_fini,
 	.bar2.wait = gf100_bar_bar1_wait,
-	.kmap = gf100_bar_kmap,
+	.bar2.vmm = gf100_bar_bar2_vmm,
 	.flush = g84_bar_flush,
 };
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.h b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.h
index c56c8989b2a1..fc1a7bd975a7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.h
@@ -23,4 +23,5 @@ void gf100_bar_bar1_init(struct nvkm_bar *);
 void gf100_bar_bar1_wait(struct nvkm_bar *);
 struct nvkm_vmm *gf100_bar_bar1_vmm(struct nvkm_bar *);
 void gf100_bar_bar2_init(struct nvkm_bar *);
+struct nvkm_vmm *gf100_bar_bar2_vmm(struct nvkm_bar *);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c
index 8020cc996d1a..4b912c905551 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c
@@ -28,12 +28,6 @@
 #include <subdev/mmu.h>
 #include <subdev/timer.h>
 
-struct nvkm_vm *
-nv50_bar_kmap(struct nvkm_bar *base)
-{
-	return nv50_bar(base)->bar2_vm;
-}
-
 static void
 nv50_bar_flush(struct nvkm_bar *base)
 {
@@ -75,6 +69,12 @@ nv50_bar_bar1_init(struct nvkm_bar *base)
 	nvkm_wr32(device, 0x001708, 0x80000000 | bar->bar1->node->offset >> 4);
 }
 
+struct nvkm_vmm *
+nv50_bar_bar2_vmm(struct nvkm_bar *base)
+{
+	return nv50_bar(base)->bar2_vm;
+}
+
 void
 nv50_bar_bar2_fini(struct nvkm_bar *bar)
 {
@@ -232,7 +232,7 @@ nv50_bar_func = {
 	.bar2.init = nv50_bar_bar2_init,
 	.bar2.fini = nv50_bar_bar2_fini,
 	.bar2.wait = nv50_bar_bar1_wait,
-	.kmap = nv50_bar_kmap,
+	.bar2.vmm = nv50_bar_bar2_vmm,
 	.flush = nv50_bar_flush,
 };
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.h b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.h
index 24ca9a52cb42..b5fe26aab118 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.h
@@ -24,6 +24,5 @@ void nv50_bar_bar1_init(struct nvkm_bar *);
 void nv50_bar_bar1_wait(struct nvkm_bar *);
 struct nvkm_vmm *nv50_bar_bar1_vmm(struct nvkm_bar *);
 void nv50_bar_bar2_init(struct nvkm_bar *);
-struct nvkm_vm *nv50_bar_kmap(struct nvkm_bar *);
-void nv50_bar_unmap(struct nvkm_bar *, struct nvkm_vma *);
+struct nvkm_vmm *nv50_bar_bar2_vmm(struct nvkm_bar *);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/priv.h
index 5aa220e204ee..f9a07b6d2860 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/priv.h
@@ -18,7 +18,6 @@ struct nvkm_bar_func {
 		struct nvkm_vmm *(*vmm)(struct nvkm_bar *);
 	} bar1, bar2;
 
-	struct nvkm_vm *(*kmap)(struct nvkm_bar *);
 	void (*flush)(struct nvkm_bar *);
 };