drm/nouveau/ibus: convert to new-style nvkm_subdev

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

9 files changed, 101 insertions, 209 deletions

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/ibus.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/ibus.h
index 8fc7946b8a42..9d512cd5a0a7 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/ibus.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/ibus.h
@@ -2,31 +2,7 @@
 #define __NVKM_IBUS_H__
 #include <core/subdev.h>
 
-struct nvkm_ibus {
-	struct nvkm_subdev subdev;
-};
-
-static inline struct nvkm_ibus *
-nvkm_ibus(void *obj)
-{
-	return (void *)nvkm_subdev(obj, NVDEV_SUBDEV_IBUS);
-}
-
-#define nvkm_ibus_create(p,e,o,d)                                           \
-	nvkm_subdev_create_((p), (e), (o), 0, "PIBUS", "ibus",              \
-			       sizeof(**d), (void **)d)
-#define nvkm_ibus_destroy(p)                                                \
-	nvkm_subdev_destroy(&(p)->subdev)
-#define nvkm_ibus_init(p)                                                   \
-	nvkm_subdev_init_old(&(p)->subdev)
-#define nvkm_ibus_fini(p,s)                                                 \
-	nvkm_subdev_fini_old(&(p)->subdev, (s))
-
-#define _nvkm_ibus_dtor _nvkm_subdev_dtor
-#define _nvkm_ibus_init _nvkm_subdev_init
-#define _nvkm_ibus_fini _nvkm_subdev_fini
-
-extern struct nvkm_oclass gf100_ibus_oclass;
-extern struct nvkm_oclass gk104_ibus_oclass;
-extern struct nvkm_oclass gk20a_ibus_oclass;
+int gf100_ibus_new(struct nvkm_device *, int, struct nvkm_subdev **);
+int gk104_ibus_new(struct nvkm_device *, int, struct nvkm_subdev **);
+int gk20a_ibus_new(struct nvkm_device *, int, struct nvkm_subdev **);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index 4c314961cc36..2d8ef80f32e7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -1298,7 +1298,7 @@ nvc0_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = g94_gpio_new,
 	.i2c = g94_i2c_new,
-//	.ibus = gf100_ibus_new,
+	.ibus = gf100_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gf100_ltc_new,
 //	.mc = gf100_mc_new,
@@ -1333,7 +1333,7 @@ nvc1_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = g94_gpio_new,
 	.i2c = g94_i2c_new,
-//	.ibus = gf100_ibus_new,
+	.ibus = gf100_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1367,7 +1367,7 @@ nvc3_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = g94_gpio_new,
 	.i2c = g94_i2c_new,
-//	.ibus = gf100_ibus_new,
+	.ibus = gf100_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1401,7 +1401,7 @@ nvc4_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = g94_gpio_new,
 	.i2c = g94_i2c_new,
-//	.ibus = gf100_ibus_new,
+	.ibus = gf100_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gf100_ltc_new,
 //	.mc = gf100_mc_new,
@@ -1436,7 +1436,7 @@ nvc8_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = g94_gpio_new,
 	.i2c = g94_i2c_new,
-//	.ibus = gf100_ibus_new,
+	.ibus = gf100_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gf100_ltc_new,
 //	.mc = gf100_mc_new,
@@ -1471,7 +1471,7 @@ nvce_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = g94_gpio_new,
 	.i2c = g94_i2c_new,
-//	.ibus = gf100_ibus_new,
+	.ibus = gf100_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gf100_ltc_new,
 //	.mc = gf100_mc_new,
@@ -1506,7 +1506,7 @@ nvcf_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = g94_gpio_new,
 	.i2c = g94_i2c_new,
-//	.ibus = gf100_ibus_new,
+	.ibus = gf100_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1540,7 +1540,7 @@ nvd7_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = gf119_gpio_new,
 	.i2c = gf117_i2c_new,
-//	.ibus = gf100_ibus_new,
+	.ibus = gf100_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1572,7 +1572,7 @@ nvd9_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = gf119_gpio_new,
 	.i2c = gf119_i2c_new,
-//	.ibus = gf100_ibus_new,
+	.ibus = gf100_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1606,7 +1606,7 @@ nve4_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1642,7 +1642,7 @@ nve6_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1678,7 +1678,7 @@ nve7_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1710,7 +1710,7 @@ nvea_chipset = {
 	.clk = gk20a_clk_new,
 	.fb = gk20a_fb_new,
 	.fuse = gf100_fuse_new,
-//	.ibus = gk20a_ibus_new,
+	.ibus = gk20a_ibus_new,
 //	.imem = gk20a_instmem_new,
 //	.ltc = gk104_ltc_new,
 //	.mc = gk20a_mc_new,
@@ -1738,7 +1738,7 @@ nvf0_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1774,7 +1774,7 @@ nvf1_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gf119_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
@@ -1810,7 +1810,7 @@ nv106_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gk104_ltc_new,
 //	.mc = gk20a_mc_new,
@@ -1845,7 +1845,7 @@ nv108_chipset = {
 	.fuse = gf100_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gk104_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gk104_ltc_new,
 //	.mc = gk20a_mc_new,
@@ -1880,7 +1880,7 @@ nv117_chipset = {
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gf119_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gm107_ltc_new,
 //	.mc = gk20a_mc_new,
@@ -1909,7 +1909,7 @@ nv124_chipset = {
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gm204_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gm107_ltc_new,
 //	.mc = gk20a_mc_new,
@@ -1938,7 +1938,7 @@ nv126_chipset = {
 	.fuse = gm107_fuse_new,
 	.gpio = gk104_gpio_new,
 	.i2c = gm204_i2c_new,
-//	.ibus = gk104_ibus_new,
+	.ibus = gk104_ibus_new,
 //	.imem = nv50_instmem_new,
 //	.ltc = gm107_ltc_new,
 //	.mc = gk20a_mc_new,
@@ -1963,7 +1963,7 @@ nv12b_chipset = {
 	.bus = gf100_bus_new,
 	.fb = gk20a_fb_new,
 	.fuse = gm107_fuse_new,
-//	.ibus = gk20a_ibus_new,
+	.ibus = gk20a_ibus_new,
 //	.imem = gk20a_instmem_new,
 //	.ltc = gm107_ltc_new,
 //	.mc = gk20a_mc_new,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/gf100.c
index 0ed4eb72628e..a0f54fd80810 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/gf100.c
@@ -33,7 +33,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf100_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gf100_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gf100_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
@@ -56,7 +55,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf100_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gf100_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gf100_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
@@ -79,7 +77,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gf100_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gf100_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
@@ -101,7 +98,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf100_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gf100_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gf100_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
@@ -124,7 +120,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gf100_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gf100_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
@@ -146,7 +141,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gf100_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gf100_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
@@ -168,7 +162,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf100_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gf100_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gf100_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
@@ -191,7 +184,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gf100_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gf100_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf110_pmu_oclass;
@@ -213,7 +205,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gf100_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gf100_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_ENGINE_DMAOBJ ] =  gf110_dmaeng_oclass;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/gk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/gk104.c
index 05d8d276a4e6..f2f524b21950 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/gk104.c
@@ -33,7 +33,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gk104_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk104_pmu_oclass;
@@ -57,7 +56,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gk104_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf110_pmu_oclass;
@@ -81,7 +79,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gk104_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk104_pmu_oclass;
@@ -103,7 +100,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gk20a_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &gk20a_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gk104_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk20a_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] = gk20a_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_ENGINE_DMAOBJ ] =  gf110_dmaeng_oclass;
@@ -121,7 +117,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gk104_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk110_pmu_oclass;
@@ -145,7 +140,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gf106_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gk104_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk110_pmu_oclass;
@@ -169,7 +163,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gk20a_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gk104_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
@@ -192,7 +185,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gk20a_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &nv04_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gk104_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c
index a04bd5b744fd..9c0306279de8 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c
@@ -33,7 +33,6 @@ gm100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gk20a_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &gk20a_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gm107_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
@@ -67,7 +66,6 @@ gm100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gk20a_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &gk20a_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gm107_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
@@ -98,7 +96,6 @@ gm100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gk20a_mc_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &gk20a_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gm107_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk104_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] =  nv50_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
@@ -125,7 +122,6 @@ gm100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_TIMER  ] = &gk20a_timer_oclass;
 		device->oclass[NVDEV_SUBDEV_LTC    ] =  gm107_ltc_oclass;
-		device->oclass[NVDEV_SUBDEV_IBUS   ] = &gk20a_ibus_oclass;
 		device->oclass[NVDEV_SUBDEV_INSTMEM] = gk20a_instmem_oclass;
 		device->oclass[NVDEV_SUBDEV_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_ENGINE_DMAOBJ ] =  gf110_dmaeng_oclass;
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.c
index b9ffe56d9eff..e183729bfee0 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.c
@@ -29,7 +29,6 @@
 #include <subdev/bios/init.h>
 #include <subdev/bios/pll.h>
 #include <subdev/clk/pll.h>
-#include <subdev/ibus.h>
 #include <subdev/vga.h>
 
 int
@@ -97,7 +96,6 @@ nv50_devinit_preinit(struct nvkm_devinit *base)
 	struct nv50_devinit *init = nv50_devinit(base);
 	struct nvkm_subdev *subdev = &init->base.subdev;
 	struct nvkm_device *device = subdev->device;
-	struct nvkm_subdev *ibus = device->ibus;
 
 	/* our heuristics can't detect whether the board has had its
 	 * devinit scripts executed or not if the display engine is
@@ -119,13 +117,6 @@ nv50_devinit_preinit(struct nvkm_devinit *base)
 			init->base.post = true;
 		}
 	}
-
-	/* some boards appear to require certain init register timeouts
-	 * to be bumped before runing devinit scripts.  not a clue why
-	 * the vbios engineers didn't make the scripts just work...
-	 */
-	if (init->base.post && ibus)
-		nvkm_object_init(&ibus->object);
 }
 
 void
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gf100.c
index 6708fbafebae..37a0496f7ed1 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gf100.c
@@ -24,46 +24,42 @@
 #include <subdev/ibus.h>
 
 static void
-gf100_ibus_intr_hub(struct nvkm_ibus *ibus, int i)
+gf100_ibus_intr_hub(struct nvkm_subdev *ibus, int i)
 {
-	struct nvkm_subdev *subdev = &ibus->subdev;
-	struct nvkm_device *device = subdev->device;
+	struct nvkm_device *device = ibus->device;
 	u32 addr = nvkm_rd32(device, 0x122120 + (i * 0x0400));
 	u32 data = nvkm_rd32(device, 0x122124 + (i * 0x0400));
 	u32 stat = nvkm_rd32(device, 0x122128 + (i * 0x0400));
-	nvkm_error(subdev, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
+	nvkm_error(ibus, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
 	nvkm_mask(device, 0x122128 + (i * 0x0400), 0x00000200, 0x00000000);
 }
 
 static void
-gf100_ibus_intr_rop(struct nvkm_ibus *ibus, int i)
+gf100_ibus_intr_rop(struct nvkm_subdev *ibus, int i)
 {
-	struct nvkm_subdev *subdev = &ibus->subdev;
-	struct nvkm_device *device = subdev->device;
+	struct nvkm_device *device = ibus->device;
 	u32 addr = nvkm_rd32(device, 0x124120 + (i * 0x0400));
 	u32 data = nvkm_rd32(device, 0x124124 + (i * 0x0400));
 	u32 stat = nvkm_rd32(device, 0x124128 + (i * 0x0400));
-	nvkm_error(subdev, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
+	nvkm_error(ibus, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
 	nvkm_mask(device, 0x124128 + (i * 0x0400), 0x00000200, 0x00000000);
 }
 
 static void
-gf100_ibus_intr_gpc(struct nvkm_ibus *ibus, int i)
+gf100_ibus_intr_gpc(struct nvkm_subdev *ibus, int i)
 {
-	struct nvkm_subdev *subdev = &ibus->subdev;
-	struct nvkm_device *device = subdev->device;
+	struct nvkm_device *device = ibus->device;
 	u32 addr = nvkm_rd32(device, 0x128120 + (i * 0x0400));
 	u32 data = nvkm_rd32(device, 0x128124 + (i * 0x0400));
 	u32 stat = nvkm_rd32(device, 0x128128 + (i * 0x0400));
-	nvkm_error(subdev, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
+	nvkm_error(ibus, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
 	nvkm_mask(device, 0x128128 + (i * 0x0400), 0x00000200, 0x00000000);
 }
 
 static void
-gf100_ibus_intr(struct nvkm_subdev *subdev)
+gf100_ibus_intr(struct nvkm_subdev *ibus)
 {
-	struct nvkm_ibus *ibus = (void *)subdev;
-	struct nvkm_device *device = ibus->subdev.device;
+	struct nvkm_device *device = ibus->device;
 	u32 intr0 = nvkm_rd32(device, 0x121c58);
 	u32 intr1 = nvkm_rd32(device, 0x121c5c);
 	u32 hubnr = nvkm_rd32(device, 0x121c70);
@@ -96,30 +92,18 @@ gf100_ibus_intr(struct nvkm_subdev *subdev)
 	}
 }
 
-static int
-gf100_ibus_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-		struct nvkm_oclass *oclass, void *data, u32 size,
-		struct nvkm_object **pobject)
-{
-	struct nvkm_ibus *ibus;
-	int ret;
-
-	ret = nvkm_ibus_create(parent, engine, oclass, &ibus);
-	*pobject = nv_object(ibus);
-	if (ret)
-		return ret;
+static const struct nvkm_subdev_func
+gf100_ibus = {
+	.intr = gf100_ibus_intr,
+};
 
-	nv_subdev(ibus)->intr = gf100_ibus_intr;
+int
+gf100_ibus_new(struct nvkm_device *device, int index,
+	       struct nvkm_subdev **pibus)
+{
+	struct nvkm_subdev *ibus;
+	if (!(ibus = *pibus = kzalloc(sizeof(*ibus), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&gf100_ibus, device, index, 0, ibus);
 	return 0;
 }
-
-struct nvkm_oclass
-gf100_ibus_oclass = {
-	.handle = NV_SUBDEV(IBUS, 0xc0),
-	.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = gf100_ibus_ctor,
-		.dtor = _nvkm_ibus_dtor,
-		.init = _nvkm_ibus_init,
-		.fini = _nvkm_ibus_fini,
-	},
-};
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk104.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk104.c
index 0ac0bbaa9d2a..ba33609f643c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk104.c
@@ -24,46 +24,42 @@
 #include <subdev/ibus.h>
 
 static void
-gk104_ibus_intr_hub(struct nvkm_ibus *ibus, int i)
+gk104_ibus_intr_hub(struct nvkm_subdev *ibus, int i)
 {
-	struct nvkm_subdev *subdev = &ibus->subdev;
-	struct nvkm_device *device = subdev->device;
+	struct nvkm_device *device = ibus->device;
 	u32 addr = nvkm_rd32(device, 0x122120 + (i * 0x0800));
 	u32 data = nvkm_rd32(device, 0x122124 + (i * 0x0800));
 	u32 stat = nvkm_rd32(device, 0x122128 + (i * 0x0800));
-	nvkm_error(subdev, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
+	nvkm_error(ibus, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
 	nvkm_mask(device, 0x122128 + (i * 0x0800), 0x00000200, 0x00000000);
 }
 
 static void
-gk104_ibus_intr_rop(struct nvkm_ibus *ibus, int i)
+gk104_ibus_intr_rop(struct nvkm_subdev *ibus, int i)
 {
-	struct nvkm_subdev *subdev = &ibus->subdev;
-	struct nvkm_device *device = subdev->device;
+	struct nvkm_device *device = ibus->device;
 	u32 addr = nvkm_rd32(device, 0x124120 + (i * 0x0800));
 	u32 data = nvkm_rd32(device, 0x124124 + (i * 0x0800));
 	u32 stat = nvkm_rd32(device, 0x124128 + (i * 0x0800));
-	nvkm_error(subdev, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
+	nvkm_error(ibus, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
 	nvkm_mask(device, 0x124128 + (i * 0x0800), 0x00000200, 0x00000000);
 }
 
 static void
-gk104_ibus_intr_gpc(struct nvkm_ibus *ibus, int i)
+gk104_ibus_intr_gpc(struct nvkm_subdev *ibus, int i)
 {
-	struct nvkm_subdev *subdev = &ibus->subdev;
-	struct nvkm_device *device = subdev->device;
+	struct nvkm_device *device = ibus->device;
 	u32 addr = nvkm_rd32(device, 0x128120 + (i * 0x0800));
 	u32 data = nvkm_rd32(device, 0x128124 + (i * 0x0800));
 	u32 stat = nvkm_rd32(device, 0x128128 + (i * 0x0800));
-	nvkm_error(subdev, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
+	nvkm_error(ibus, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
 	nvkm_mask(device, 0x128128 + (i * 0x0800), 0x00000200, 0x00000000);
 }
 
 static void
-gk104_ibus_intr(struct nvkm_subdev *subdev)
+gk104_ibus_intr(struct nvkm_subdev *ibus)
 {
-	struct nvkm_ibus *ibus = (void *)subdev;
-	struct nvkm_device *device = ibus->subdev.device;
+	struct nvkm_device *device = ibus->device;
 	u32 intr0 = nvkm_rd32(device, 0x120058);
 	u32 intr1 = nvkm_rd32(device, 0x12005c);
 	u32 hubnr = nvkm_rd32(device, 0x120070);
@@ -97,47 +93,33 @@ gk104_ibus_intr(struct nvkm_subdev *subdev)
 }
 
 static int
-gk104_ibus_init(struct nvkm_object *object)
+gk104_ibus_init(struct nvkm_subdev *ibus)
 {
-	struct nvkm_ibus *ibus = (void *)object;
-	struct nvkm_device *device = ibus->subdev.device;
-	int ret = nvkm_ibus_init(ibus);
-	if (ret == 0) {
-		nvkm_mask(device, 0x122318, 0x0003ffff, 0x00001000);
-		nvkm_mask(device, 0x12231c, 0x0003ffff, 0x00000200);
-		nvkm_mask(device, 0x122310, 0x0003ffff, 0x00000800);
-		nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000100);
-		nvkm_mask(device, 0x1223b0, 0x0003ffff, 0x00000fff);
-		nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000200);
-		nvkm_mask(device, 0x122358, 0x0003ffff, 0x00002880);
-	}
-	return ret;
+	struct nvkm_device *device = ibus->device;
+	nvkm_mask(device, 0x122318, 0x0003ffff, 0x00001000);
+	nvkm_mask(device, 0x12231c, 0x0003ffff, 0x00000200);
+	nvkm_mask(device, 0x122310, 0x0003ffff, 0x00000800);
+	nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000100);
+	nvkm_mask(device, 0x1223b0, 0x0003ffff, 0x00000fff);
+	nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000200);
+	nvkm_mask(device, 0x122358, 0x0003ffff, 0x00002880);
+	return 0;
 }
 
-static int
-gk104_ibus_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-		struct nvkm_oclass *oclass, void *data, u32 size,
-		struct nvkm_object **pobject)
-{
-	struct nvkm_ibus *ibus;
-	int ret;
-
-	ret = nvkm_ibus_create(parent, engine, oclass, &ibus);
-	*pobject = nv_object(ibus);
-	if (ret)
-		return ret;
+static const struct nvkm_subdev_func
+gk104_ibus = {
+	.preinit = gk104_ibus_init,
+	.init = gk104_ibus_init,
+	.intr = gk104_ibus_intr,
+};
 
-	nv_subdev(ibus)->intr = gk104_ibus_intr;
+int
+gk104_ibus_new(struct nvkm_device *device, int index,
+	       struct nvkm_subdev **pibus)
+{
+	struct nvkm_subdev *ibus;
+	if (!(ibus = *pibus = kzalloc(sizeof(*ibus), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&gk104_ibus, device, index, 0, ibus);
 	return 0;
 }
-
-struct nvkm_oclass
-gk104_ibus_oclass = {
-	.handle = NV_SUBDEV(IBUS, 0xe0),
-	.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = gk104_ibus_ctor,
-		.dtor = _nvkm_ibus_dtor,
-		.init = gk104_ibus_init,
-		.fini = _nvkm_ibus_fini,
-	},
-};
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c
index 1b7642343957..3484079e885a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c
@@ -23,9 +23,9 @@
 #include <subdev/timer.h>
 
 static void
-gk20a_ibus_init_ibus_ring(struct nvkm_ibus *ibus)
+gk20a_ibus_init_ibus_ring(struct nvkm_subdev *ibus)
 {
-	struct nvkm_device *device = ibus->subdev.device;
+	struct nvkm_device *device = ibus->device;
 	nvkm_mask(device, 0x137250, 0x3f, 0);
 
 	nvkm_mask(device, 0x000200, 0x20, 0);
@@ -46,14 +46,13 @@ gk20a_ibus_init_ibus_ring(struct nvkm_ibus *ibus)
 }
 
 static void
-gk20a_ibus_intr(struct nvkm_subdev *subdev)
+gk20a_ibus_intr(struct nvkm_subdev *ibus)
 {
-	struct nvkm_ibus *ibus = (void *)subdev;
-	struct nvkm_device *device = ibus->subdev.device;
+	struct nvkm_device *device = ibus->device;
 	u32 status0 = nvkm_rd32(device, 0x120058);
 
 	if (status0 & 0x7) {
-		nvkm_debug(subdev, "resetting ibus ring\n");
+		nvkm_debug(ibus, "resetting ibus ring\n");
 		gk20a_ibus_init_ibus_ring(ibus);
 	}
 
@@ -66,44 +65,25 @@ gk20a_ibus_intr(struct nvkm_subdev *subdev)
 }
 
 static int
-gk20a_ibus_init(struct nvkm_object *object)
+gk20a_ibus_init(struct nvkm_subdev *ibus)
 {
-	struct nvkm_ibus *ibus = (void *)object;
-	int ret;
-
-	ret = _nvkm_ibus_init(object);
-	if (ret)
-		return ret;
-
 	gk20a_ibus_init_ibus_ring(ibus);
-
 	return 0;
 }
 
-static int
-gk20a_ibus_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-		struct nvkm_oclass *oclass, void *data, u32 size,
-		struct nvkm_object **pobject)
-{
-	struct nvkm_ibus *ibus;
-	int ret;
-
-	ret = nvkm_ibus_create(parent, engine, oclass, &ibus);
-	*pobject = nv_object(ibus);
-	if (ret)
-		return ret;
+static const struct nvkm_subdev_func
+gk20a_ibus = {
+	.init = gk20a_ibus_init,
+	.intr = gk20a_ibus_intr,
+};
 
-	nv_subdev(ibus)->intr = gk20a_ibus_intr;
+int
+gk20a_ibus_new(struct nvkm_device *device, int index,
+	       struct nvkm_subdev **pibus)
+{
+	struct nvkm_subdev *ibus;
+	if (!(ibus = *pibus = kzalloc(sizeof(*ibus), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&gk20a_ibus, device, index, 0, ibus);
 	return 0;
 }
-
-struct nvkm_oclass
-gk20a_ibus_oclass = {
-	.handle = NV_SUBDEV(IBUS, 0xea),
-	.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = gk20a_ibus_ctor,
-		.dtor = _nvkm_ibus_dtor,
-		.init = gk20a_ibus_init,
-		.fini = _nvkm_ibus_fini,
-	},
-};