These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

11 files changed, 316 insertions, 233 deletions

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/Kbuild b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/Kbuild
index 83d80b13f..5fa9e9183 100644
--- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/Kbuild
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/Kbuild
@@ -1,3 +1,4 @@
+nvkm-y += nvkm/subdev/bus/base.o
 nvkm-y += nvkm/subdev/bus/hwsq.o
 nvkm-y += nvkm/subdev/bus/nv04.o
 nvkm-y += nvkm/subdev/bus/nv31.o
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/base.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/base.c
new file mode 100644
index 000000000..dc5a10f18
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/base.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+static void
+nvkm_bus_intr(struct nvkm_subdev *subdev)
+{
+	struct nvkm_bus *bus = nvkm_bus(subdev);
+	bus->func->intr(bus);
+}
+
+static int
+nvkm_bus_init(struct nvkm_subdev *subdev)
+{
+	struct nvkm_bus *bus = nvkm_bus(subdev);
+	bus->func->init(bus);
+	return 0;
+}
+
+static void *
+nvkm_bus_dtor(struct nvkm_subdev *subdev)
+{
+	return nvkm_bus(subdev);
+}
+
+static const struct nvkm_subdev_func
+nvkm_bus = {
+	.dtor = nvkm_bus_dtor,
+	.init = nvkm_bus_init,
+	.intr = nvkm_bus_intr,
+};
+
+int
+nvkm_bus_new_(const struct nvkm_bus_func *func, struct nvkm_device *device,
+	      int index, struct nvkm_bus **pbus)
+{
+	struct nvkm_bus *bus;
+	if (!(bus = *pbus = kzalloc(sizeof(*bus), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&nvkm_bus, device, index, 0, &bus->subdev);
+	bus->func = func;
+	return 0;
+}
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/g94.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/g94.c
index cbe699e82..9700b5c01 100644
--- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/g94.c
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/g94.c
@@ -22,37 +22,43 @@
  * Authors: Martin Peres <martin.peres@labri.fr>
  *          Ben Skeggs
  */
-#include "nv04.h"
+#include "priv.h"
 
 #include <subdev/timer.h>
 
 static int
-g94_bus_hwsq_exec(struct nvkm_bus *pbus, u32 *data, u32 size)
+g94_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
 {
-	struct nv50_bus_priv *priv = (void *)pbus;
+	struct nvkm_device *device = bus->subdev.device;
 	int i;
 
-	nv_mask(pbus, 0x001098, 0x00000008, 0x00000000);
-	nv_wr32(pbus, 0x001304, 0x00000000);
-	nv_wr32(pbus, 0x001318, 0x00000000);
+	nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
+	nvkm_wr32(device, 0x001304, 0x00000000);
+	nvkm_wr32(device, 0x001318, 0x00000000);
 	for (i = 0; i < size; i++)
-		nv_wr32(priv, 0x080000 + (i * 4), data[i]);
-	nv_mask(pbus, 0x001098, 0x00000018, 0x00000018);
-	nv_wr32(pbus, 0x00130c, 0x00000001);
+		nvkm_wr32(device, 0x080000 + (i * 4), data[i]);
+	nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
+	nvkm_wr32(device, 0x00130c, 0x00000001);
 
-	return nv_wait(pbus, 0x001308, 0x00000100, 0x00000000) ? 0 : -ETIMEDOUT;
+	if (nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x001308) & 0x00000100))
+			break;
+	) < 0)
+		return -ETIMEDOUT;
+
+	return 0;
 }
 
-struct nvkm_oclass *
-g94_bus_oclass = &(struct nv04_bus_impl) {
-	.base.handle = NV_SUBDEV(BUS, 0x94),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = nv04_bus_ctor,
-		.dtor = _nvkm_bus_dtor,
-		.init = nv50_bus_init,
-		.fini = _nvkm_bus_fini,
-	},
+static const struct nvkm_bus_func
+g94_bus = {
+	.init = nv50_bus_init,
 	.intr = nv50_bus_intr,
 	.hwsq_exec = g94_bus_hwsq_exec,
 	.hwsq_size = 128,
-}.base;
+};
+
+int
+g94_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
+{
+	return nvkm_bus_new_(&g94_bus, device, index, pbus);
+}
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c
index ebc63ba96..e0930d5fd 100644
--- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c
@@ -22,59 +22,54 @@
  * Authors: Martin Peres <martin.peres@labri.fr>
  *          Ben Skeggs
  */
-#include "nv04.h"
+#include "priv.h"
 
 static void
-gf100_bus_intr(struct nvkm_subdev *subdev)
+gf100_bus_intr(struct nvkm_bus *bus)
 {
-	struct nvkm_bus *pbus = nvkm_bus(subdev);
-	u32 stat = nv_rd32(pbus, 0x001100) & nv_rd32(pbus, 0x001140);
+	struct nvkm_subdev *subdev = &bus->subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
 
 	if (stat & 0x0000000e) {
-		u32 addr = nv_rd32(pbus, 0x009084);
-		u32 data = nv_rd32(pbus, 0x009088);
+		u32 addr = nvkm_rd32(device, 0x009084);
+		u32 data = nvkm_rd32(device, 0x009088);
 
-		nv_error(pbus, "MMIO %s of 0x%08x FAULT at 0x%06x [ %s%s%s]\n",
-			 (addr & 0x00000002) ? "write" : "read", data,
-			 (addr & 0x00fffffc),
-			 (stat & 0x00000002) ? "!ENGINE " : "",
-			 (stat & 0x00000004) ? "IBUS " : "",
-			 (stat & 0x00000008) ? "TIMEOUT " : "");
+		nvkm_error(subdev,
+			   "MMIO %s of %08x FAULT at %06x [ %s%s%s]\n",
+			   (addr & 0x00000002) ? "write" : "read", data,
+			   (addr & 0x00fffffc),
+			   (stat & 0x00000002) ? "!ENGINE " : "",
+			   (stat & 0x00000004) ? "IBUS " : "",
+			   (stat & 0x00000008) ? "TIMEOUT " : "");
 
-		nv_wr32(pbus, 0x009084, 0x00000000);
-		nv_wr32(pbus, 0x001100, (stat & 0x0000000e));
+		nvkm_wr32(device, 0x009084, 0x00000000);
+		nvkm_wr32(device, 0x001100, (stat & 0x0000000e));
 		stat &= ~0x0000000e;
 	}
 
 	if (stat) {
-		nv_error(pbus, "unknown intr 0x%08x\n", stat);
-		nv_mask(pbus, 0x001140, stat, 0x00000000);
+		nvkm_error(subdev, "intr %08x\n", stat);
+		nvkm_mask(device, 0x001140, stat, 0x00000000);
 	}
 }
 
-static int
-gf100_bus_init(struct nvkm_object *object)
+static void
+gf100_bus_init(struct nvkm_bus *bus)
 {
-	struct nv04_bus_priv *priv = (void *)object;
-	int ret;
-
-	ret = nvkm_bus_init(&priv->base);
-	if (ret)
-		return ret;
-
-	nv_wr32(priv, 0x001100, 0xffffffff);
-	nv_wr32(priv, 0x001140, 0x0000000e);
-	return 0;
+	struct nvkm_device *device = bus->subdev.device;
+	nvkm_wr32(device, 0x001100, 0xffffffff);
+	nvkm_wr32(device, 0x001140, 0x0000000e);
 }
 
-struct nvkm_oclass *
-gf100_bus_oclass = &(struct nv04_bus_impl) {
-	.base.handle = NV_SUBDEV(BUS, 0xc0),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = nv04_bus_ctor,
-		.dtor = _nvkm_bus_dtor,
-		.init = gf100_bus_init,
-		.fini = _nvkm_bus_fini,
-	},
+static const struct nvkm_bus_func
+gf100_bus = {
+	.init = gf100_bus_init,
 	.intr = gf100_bus_intr,
-}.base;
+};
+
+int
+gf100_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
+{
+	return nvkm_bus_new_(&gf100_bus, device, index, pbus);
+}
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.c
index 7622b4161..2a5668938 100644
--- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.c
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.c
@@ -21,10 +21,10 @@
  *
  * Authors: Ben Skeggs <bskeggs@redhat.com>
  */
-#include <subdev/bus.h>
+#include "priv.h"
 
 struct nvkm_hwsq {
-	struct nvkm_bus *pbus;
+	struct nvkm_subdev *subdev;
 	u32 addr;
 	u32 data;
 	struct {
@@ -41,13 +41,13 @@ hwsq_cmd(struct nvkm_hwsq *hwsq, int size, u8 data[])
 }
 
 int
-nvkm_hwsq_init(struct nvkm_bus *pbus, struct nvkm_hwsq **phwsq)
+nvkm_hwsq_init(struct nvkm_subdev *subdev, struct nvkm_hwsq **phwsq)
 {
 	struct nvkm_hwsq *hwsq;
 
 	hwsq = *phwsq = kmalloc(sizeof(*hwsq), GFP_KERNEL);
 	if (hwsq) {
-		hwsq->pbus = pbus;
+		hwsq->subdev = subdev;
 		hwsq->addr = ~0;
 		hwsq->data = ~0;
 		memset(hwsq->c.data, 0x7f, sizeof(hwsq->c.data));
@@ -63,21 +63,23 @@ nvkm_hwsq_fini(struct nvkm_hwsq **phwsq, bool exec)
 	struct nvkm_hwsq *hwsq = *phwsq;
 	int ret = 0, i;
 	if (hwsq) {
-		struct nvkm_bus *pbus = hwsq->pbus;
+		struct nvkm_subdev *subdev = hwsq->subdev;
+		struct nvkm_bus *bus = subdev->device->bus;
 		hwsq->c.size = (hwsq->c.size + 4) / 4;
-		if (hwsq->c.size <= pbus->hwsq_size) {
+		if (hwsq->c.size <= bus->func->hwsq_size) {
 			if (exec)
-				ret = pbus->hwsq_exec(pbus, (u32 *)hwsq->c.data,
-						      hwsq->c.size);
+				ret = bus->func->hwsq_exec(bus,
+							   (u32 *)hwsq->c.data,
+								  hwsq->c.size);
 			if (ret)
-				nv_error(pbus, "hwsq exec failed: %d\n", ret);
+				nvkm_error(subdev, "hwsq exec failed: %d\n", ret);
 		} else {
-			nv_error(pbus, "hwsq ucode too large\n");
+			nvkm_error(subdev, "hwsq ucode too large\n");
 			ret = -ENOSPC;
 		}
 
 		for (i = 0; ret && i < hwsq->c.size; i++)
-			nv_error(pbus, "\t0x%08x\n", ((u32 *)hwsq->c.data)[i]);
+			nvkm_error(subdev, "\t%08x\n", ((u32 *)hwsq->c.data)[i]);
 
 		*phwsq = NULL;
 		kfree(hwsq);
@@ -88,7 +90,7 @@ nvkm_hwsq_fini(struct nvkm_hwsq **phwsq, bool exec)
 void
 nvkm_hwsq_wr32(struct nvkm_hwsq *hwsq, u32 addr, u32 data)
 {
-	nv_debug(hwsq->pbus, "R[%06x] = 0x%08x\n", addr, data);
+	nvkm_debug(hwsq->subdev, "R[%06x] = %08x\n", addr, data);
 
 	if (hwsq->data != data) {
 		if ((data & 0xffff0000) != (hwsq->data & 0xffff0000)) {
@@ -113,7 +115,7 @@ nvkm_hwsq_wr32(struct nvkm_hwsq *hwsq, u32 addr, u32 data)
 void
 nvkm_hwsq_setf(struct nvkm_hwsq *hwsq, u8 flag, int data)
 {
-	nv_debug(hwsq->pbus, " FLAG[%02x] = %d\n", flag, data);
+	nvkm_debug(hwsq->subdev, " FLAG[%02x] = %d\n", flag, data);
 	flag += 0x80;
 	if (data >= 0)
 		flag += 0x20;
@@ -125,11 +127,43 @@ nvkm_hwsq_setf(struct nvkm_hwsq *hwsq, u8 flag, int data)
 void
 nvkm_hwsq_wait(struct nvkm_hwsq *hwsq, u8 flag, u8 data)
 {
-	nv_debug(hwsq->pbus, " WAIT[%02x] = %d\n", flag, data);
+	nvkm_debug(hwsq->subdev, " WAIT[%02x] = %d\n", flag, data);
 	hwsq_cmd(hwsq, 3, (u8[]){ 0x5f, flag, data });
 }
 
 void
+nvkm_hwsq_wait_vblank(struct nvkm_hwsq *hwsq)
+{
+	struct nvkm_subdev *subdev = hwsq->subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 heads, x, y, px = 0;
+	int i, head_sync;
+
+	heads = nvkm_rd32(device, 0x610050);
+	for (i = 0; i < 2; i++) {
+		/* Heuristic: sync to head with biggest resolution */
+		if (heads & (2 << (i << 3))) {
+			x = nvkm_rd32(device, 0x610b40 + (0x540 * i));
+			y = (x & 0xffff0000) >> 16;
+			x &= 0x0000ffff;
+			if ((x * y) > px) {
+				px = (x * y);
+				head_sync = i;
+			}
+		}
+	}
+
+	if (px == 0) {
+		nvkm_debug(subdev, "WAIT VBLANK !NO ACTIVE HEAD\n");
+		return;
+	}
+
+	nvkm_debug(subdev, "WAIT VBLANK HEAD%d\n", head_sync);
+	nvkm_hwsq_wait(hwsq, head_sync ? 0x3 : 0x1, 0x0);
+	nvkm_hwsq_wait(hwsq, head_sync ? 0x3 : 0x1, 0x1);
+}
+
+void
 nvkm_hwsq_nsec(struct nvkm_hwsq *hwsq, u32 nsec)
 {
 	u8 shift = 0, usec = nsec / 1000;
@@ -138,6 +172,6 @@ nvkm_hwsq_nsec(struct nvkm_hwsq *hwsq, u32 nsec)
 		shift++;
 	}
 
-	nv_debug(hwsq->pbus, "    DELAY = %d ns\n", nsec);
+	nvkm_debug(hwsq->subdev, "    DELAY = %d ns\n", nsec);
 	hwsq_cmd(hwsq, 1, (u8[]){ 0x00 | (shift << 2) | usec });
 }
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.h b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.h
index ebf709c27..54ec3b131 100644
--- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.h
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/hwsq.h
@@ -59,10 +59,9 @@ hwsq_reg(u32 addr)
 static inline int
 hwsq_init(struct hwsq *ram, struct nvkm_subdev *subdev)
 {
-	struct nvkm_bus *pbus = nvkm_bus(subdev);
 	int ret;
 
-	ret = nvkm_hwsq_init(pbus, &ram->hwsq);
+	ret = nvkm_hwsq_init(subdev, &ram->hwsq);
 	if (ret)
 		return ret;
 
@@ -85,8 +84,9 @@ hwsq_exec(struct hwsq *ram, bool exec)
 static inline u32
 hwsq_rd32(struct hwsq *ram, struct hwsq_reg *reg)
 {
+	struct nvkm_device *device = ram->subdev->device;
 	if (reg->sequence != ram->sequence)
-		reg->data = nv_rd32(ram->subdev, reg->addr);
+		reg->data = nvkm_rd32(device, reg->addr);
 	return reg->data;
 }
 
@@ -134,6 +134,12 @@ hwsq_wait(struct hwsq *ram, u8 flag, u8 data)
 }
 
 static inline void
+hwsq_wait_vblank(struct hwsq *ram)
+{
+	nvkm_hwsq_wait_vblank(ram->hwsq);
+}
+
+static inline void
 hwsq_nsec(struct hwsq *ram, u32 nsec)
 {
 	nvkm_hwsq_nsec(ram->hwsq, nsec);
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c
index 19c8e50ee..c80b96789 100644
--- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c
@@ -22,73 +22,55 @@
  * Authors: Martin Peres <martin.peres@labri.fr>
  *          Ben Skeggs
  */
-#include "nv04.h"
+#include "priv.h"
+
+#include <subdev/gpio.h>
+
+#include <subdev/gpio.h>
 
 static void
-nv04_bus_intr(struct nvkm_subdev *subdev)
+nv04_bus_intr(struct nvkm_bus *bus)
 {
-	struct nvkm_bus *pbus = nvkm_bus(subdev);
-	u32 stat = nv_rd32(pbus, 0x001100) & nv_rd32(pbus, 0x001140);
+	struct nvkm_subdev *subdev = &bus->subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
 
 	if (stat & 0x00000001) {
-		nv_error(pbus, "BUS ERROR\n");
+		nvkm_error(subdev, "BUS ERROR\n");
 		stat &= ~0x00000001;
-		nv_wr32(pbus, 0x001100, 0x00000001);
+		nvkm_wr32(device, 0x001100, 0x00000001);
 	}
 
 	if (stat & 0x00000110) {
-		subdev = nvkm_subdev(subdev, NVDEV_SUBDEV_GPIO);
-		if (subdev && subdev->intr)
-			subdev->intr(subdev);
+		struct nvkm_gpio *gpio = device->gpio;
+		if (gpio)
+			nvkm_subdev_intr(&gpio->subdev);
 		stat &= ~0x00000110;
-		nv_wr32(pbus, 0x001100, 0x00000110);
+		nvkm_wr32(device, 0x001100, 0x00000110);
 	}
 
 	if (stat) {
-		nv_error(pbus, "unknown intr 0x%08x\n", stat);
-		nv_mask(pbus, 0x001140, stat, 0x00000000);
+		nvkm_error(subdev, "intr %08x\n", stat);
+		nvkm_mask(device, 0x001140, stat, 0x00000000);
 	}
 }
 
-static int
-nv04_bus_init(struct nvkm_object *object)
+static void
+nv04_bus_init(struct nvkm_bus *bus)
 {
-	struct nv04_bus_priv *priv = (void *)object;
-
-	nv_wr32(priv, 0x001100, 0xffffffff);
-	nv_wr32(priv, 0x001140, 0x00000111);
-
-	return nvkm_bus_init(&priv->base);
+	struct nvkm_device *device = bus->subdev.device;
+	nvkm_wr32(device, 0x001100, 0xffffffff);
+	nvkm_wr32(device, 0x001140, 0x00000111);
 }
 
+static const struct nvkm_bus_func
+nv04_bus = {
+	.init = nv04_bus_init,
+	.intr = nv04_bus_intr,
+};
+
 int
-nv04_bus_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-	      struct nvkm_oclass *oclass, void *data, u32 size,
-	      struct nvkm_object **pobject)
+nv04_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
 {
-	struct nv04_bus_impl *impl = (void *)oclass;
-	struct nv04_bus_priv *priv;
-	int ret;
-
-	ret = nvkm_bus_create(parent, engine, oclass, &priv);
-	*pobject = nv_object(priv);
-	if (ret)
-		return ret;
-
-	nv_subdev(priv)->intr = impl->intr;
-	priv->base.hwsq_exec = impl->hwsq_exec;
-	priv->base.hwsq_size = impl->hwsq_size;
-	return 0;
+	return nvkm_bus_new_(&nv04_bus, device, index, pbus);
 }
-
-struct nvkm_oclass *
-nv04_bus_oclass = &(struct nv04_bus_impl) {
-	.base.handle = NV_SUBDEV(BUS, 0x04),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = nv04_bus_ctor,
-		.dtor = _nvkm_bus_dtor,
-		.init = nv04_bus_init,
-		.fini = _nvkm_bus_fini,
-	},
-	.intr = nv04_bus_intr,
-}.base;
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.h b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.h
deleted file mode 100644
index 3ddc8f91b..000000000
--- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#ifndef __NVKM_BUS_NV04_H__
-#define __NVKM_BUS_NV04_H__
-#include <subdev/bus.h>
-
-struct nv04_bus_priv {
-	struct nvkm_bus base;
-};
-
-int  nv04_bus_ctor(struct nvkm_object *, struct nvkm_object *,
-		   struct nvkm_oclass *, void *, u32,
-		   struct nvkm_object **);
-int  nv50_bus_init(struct nvkm_object *);
-void nv50_bus_intr(struct nvkm_subdev *);
-
-struct nv04_bus_impl {
-	struct nvkm_oclass base;
-	void (*intr)(struct nvkm_subdev *);
-	int  (*hwsq_exec)(struct nvkm_bus *, u32 *, u32);
-	u32  hwsq_size;
-};
-#endif
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv31.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv31.c
index c5739bce8..5153d89e1 100644
--- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv31.c
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv31.c
@@ -22,70 +22,67 @@
  * Authors: Martin Peres <martin.peres@labri.fr>
  *          Ben Skeggs
  */
-#include "nv04.h"
+#include "priv.h"
+
+#include <subdev/gpio.h>
+#include <subdev/therm.h>
 
 static void
-nv31_bus_intr(struct nvkm_subdev *subdev)
+nv31_bus_intr(struct nvkm_bus *bus)
 {
-	struct nvkm_bus *pbus = nvkm_bus(subdev);
-	u32 stat = nv_rd32(pbus, 0x001100) & nv_rd32(pbus, 0x001140);
-	u32 gpio = nv_rd32(pbus, 0x001104) & nv_rd32(pbus, 0x001144);
+	struct nvkm_subdev *subdev = &bus->subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
+	u32 gpio = nvkm_rd32(device, 0x001104) & nvkm_rd32(device, 0x001144);
 
 	if (gpio) {
-		subdev = nvkm_subdev(pbus, NVDEV_SUBDEV_GPIO);
-		if (subdev && subdev->intr)
-			subdev->intr(subdev);
+		struct nvkm_gpio *gpio = device->gpio;
+		if (gpio)
+			nvkm_subdev_intr(&gpio->subdev);
 	}
 
 	if (stat & 0x00000008) {  /* NV41- */
-		u32 addr = nv_rd32(pbus, 0x009084);
-		u32 data = nv_rd32(pbus, 0x009088);
+		u32 addr = nvkm_rd32(device, 0x009084);
+		u32 data = nvkm_rd32(device, 0x009088);
 
-		nv_error(pbus, "MMIO %s of 0x%08x FAULT at 0x%06x\n",
-			 (addr & 0x00000002) ? "write" : "read", data,
-			 (addr & 0x00fffffc));
+		nvkm_error(subdev, "MMIO %s of %08x FAULT at %06x\n",
+			   (addr & 0x00000002) ? "write" : "read", data,
+			   (addr & 0x00fffffc));
 
 		stat &= ~0x00000008;
-		nv_wr32(pbus, 0x001100, 0x00000008);
+		nvkm_wr32(device, 0x001100, 0x00000008);
 	}
 
 	if (stat & 0x00070000) {
-		subdev = nvkm_subdev(pbus, NVDEV_SUBDEV_THERM);
-		if (subdev && subdev->intr)
-			subdev->intr(subdev);
+		struct nvkm_therm *therm = device->therm;
+		if (therm)
+			nvkm_subdev_intr(&therm->subdev);
 		stat &= ~0x00070000;
-		nv_wr32(pbus, 0x001100, 0x00070000);
+		nvkm_wr32(device, 0x001100, 0x00070000);
 	}
 
 	if (stat) {
-		nv_error(pbus, "unknown intr 0x%08x\n", stat);
-		nv_mask(pbus, 0x001140, stat, 0x00000000);
+		nvkm_error(subdev, "intr %08x\n", stat);
+		nvkm_mask(device, 0x001140, stat, 0x00000000);
 	}
 }
 
-static int
-nv31_bus_init(struct nvkm_object *object)
+static void
+nv31_bus_init(struct nvkm_bus *bus)
 {
-	struct nv04_bus_priv *priv = (void *)object;
-	int ret;
-
-	ret = nvkm_bus_init(&priv->base);
-	if (ret)
-		return ret;
-
-	nv_wr32(priv, 0x001100, 0xffffffff);
-	nv_wr32(priv, 0x001140, 0x00070008);
-	return 0;
+	struct nvkm_device *device = bus->subdev.device;
+	nvkm_wr32(device, 0x001100, 0xffffffff);
+	nvkm_wr32(device, 0x001140, 0x00070008);
 }
 
-struct nvkm_oclass *
-nv31_bus_oclass = &(struct nv04_bus_impl) {
-	.base.handle = NV_SUBDEV(BUS, 0x31),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = nv04_bus_ctor,
-		.dtor = _nvkm_bus_dtor,
-		.init = nv31_bus_init,
-		.fini = _nvkm_bus_fini,
-	},
+static const struct nvkm_bus_func
+nv31_bus = {
+	.init = nv31_bus_init,
 	.intr = nv31_bus_intr,
-}.base;
+};
+
+int
+nv31_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
+{
+	return nvkm_bus_new_(&nv31_bus, device, index, pbus);
+}
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv50.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv50.c
index 1987863d7..19e10fdc9 100644
--- a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv50.c
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv50.c
@@ -22,83 +22,84 @@
  * Authors: Martin Peres <martin.peres@labri.fr>
  *          Ben Skeggs
  */
-#include "nv04.h"
+#include "priv.h"
 
+#include <subdev/therm.h>
 #include <subdev/timer.h>
 
 static int
-nv50_bus_hwsq_exec(struct nvkm_bus *pbus, u32 *data, u32 size)
+nv50_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
 {
-	struct nv50_bus_priv *priv = (void *)pbus;
+	struct nvkm_device *device = bus->subdev.device;
 	int i;
 
-	nv_mask(pbus, 0x001098, 0x00000008, 0x00000000);
-	nv_wr32(pbus, 0x001304, 0x00000000);
+	nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
+	nvkm_wr32(device, 0x001304, 0x00000000);
 	for (i = 0; i < size; i++)
-		nv_wr32(priv, 0x001400 + (i * 4), data[i]);
-	nv_mask(pbus, 0x001098, 0x00000018, 0x00000018);
-	nv_wr32(pbus, 0x00130c, 0x00000003);
+		nvkm_wr32(device, 0x001400 + (i * 4), data[i]);
+	nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
+	nvkm_wr32(device, 0x00130c, 0x00000003);
 
-	return nv_wait(pbus, 0x001308, 0x00000100, 0x00000000) ? 0 : -ETIMEDOUT;
+	if (nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x001308) & 0x00000100))
+			break;
+	) < 0)
+		return -ETIMEDOUT;
+
+	return 0;
 }
 
 void
-nv50_bus_intr(struct nvkm_subdev *subdev)
+nv50_bus_intr(struct nvkm_bus *bus)
 {
-	struct nvkm_bus *pbus = nvkm_bus(subdev);
-	u32 stat = nv_rd32(pbus, 0x001100) & nv_rd32(pbus, 0x001140);
+	struct nvkm_subdev *subdev = &bus->subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
 
 	if (stat & 0x00000008) {
-		u32 addr = nv_rd32(pbus, 0x009084);
-		u32 data = nv_rd32(pbus, 0x009088);
+		u32 addr = nvkm_rd32(device, 0x009084);
+		u32 data = nvkm_rd32(device, 0x009088);
 
-		nv_error(pbus, "MMIO %s of 0x%08x FAULT at 0x%06x\n",
-			 (addr & 0x00000002) ? "write" : "read", data,
-			 (addr & 0x00fffffc));
+		nvkm_error(subdev, "MMIO %s of %08x FAULT at %06x\n",
+			   (addr & 0x00000002) ? "write" : "read", data,
+			   (addr & 0x00fffffc));
 
 		stat &= ~0x00000008;
-		nv_wr32(pbus, 0x001100, 0x00000008);
+		nvkm_wr32(device, 0x001100, 0x00000008);
 	}
 
 	if (stat & 0x00010000) {
-		subdev = nvkm_subdev(pbus, NVDEV_SUBDEV_THERM);
-		if (subdev && subdev->intr)
-			subdev->intr(subdev);
+		struct nvkm_therm *therm = device->therm;
+		if (therm)
+			nvkm_subdev_intr(&therm->subdev);
 		stat &= ~0x00010000;
-		nv_wr32(pbus, 0x001100, 0x00010000);
+		nvkm_wr32(device, 0x001100, 0x00010000);
 	}
 
 	if (stat) {
-		nv_error(pbus, "unknown intr 0x%08x\n", stat);
-		nv_mask(pbus, 0x001140, stat, 0);
+		nvkm_error(subdev, "intr %08x\n", stat);
+		nvkm_mask(device, 0x001140, stat, 0);
 	}
 }
 
-int
-nv50_bus_init(struct nvkm_object *object)
+void
+nv50_bus_init(struct nvkm_bus *bus)
 {
-	struct nv04_bus_priv *priv = (void *)object;
-	int ret;
-
-	ret = nvkm_bus_init(&priv->base);
-	if (ret)
-		return ret;
-
-	nv_wr32(priv, 0x001100, 0xffffffff);
-	nv_wr32(priv, 0x001140, 0x00010008);
-	return 0;
+	struct nvkm_device *device = bus->subdev.device;
+	nvkm_wr32(device, 0x001100, 0xffffffff);
+	nvkm_wr32(device, 0x001140, 0x00010008);
 }
 
-struct nvkm_oclass *
-nv50_bus_oclass = &(struct nv04_bus_impl) {
-	.base.handle = NV_SUBDEV(BUS, 0x50),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = nv04_bus_ctor,
-		.dtor = _nvkm_bus_dtor,
-		.init = nv50_bus_init,
-		.fini = _nvkm_bus_fini,
-	},
+static const struct nvkm_bus_func
+nv50_bus = {
+	.init = nv50_bus_init,
 	.intr = nv50_bus_intr,
 	.hwsq_exec = nv50_bus_hwsq_exec,
 	.hwsq_size = 64,
-}.base;
+};
+
+int
+nv50_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
+{
+	return nvkm_bus_new_(&nv50_bus, device, index, pbus);
+}
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/priv.h b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/priv.h
new file mode 100644
index 000000000..a130f2c64
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bus/priv.h
@@ -0,0 +1,18 @@
+#ifndef __NVKM_BUS_PRIV_H__
+#define __NVKM_BUS_PRIV_H__
+#define nvkm_bus(p) container_of((p), struct nvkm_bus, subdev)
+#include <subdev/bus.h>
+
+struct nvkm_bus_func {
+	void (*init)(struct nvkm_bus *);
+	void (*intr)(struct nvkm_bus *);
+	int (*hwsq_exec)(struct nvkm_bus *, u32 *, u32);
+	u32 hwsq_size;
+};
+
+int nvkm_bus_new_(const struct nvkm_bus_func *, struct nvkm_device *, int,
+		  struct nvkm_bus **);
+
+void nv50_bus_init(struct nvkm_bus *);
+void nv50_bus_intr(struct nvkm_bus *);
+#endif