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

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

13 files changed, 235 insertions, 342 deletions

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h
index e8234e5b735cf7..c773b5e958b4db 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h
@@ -1,31 +1,36 @@
 #ifndef __NVKM_LTC_H__
 #define __NVKM_LTC_H__
 #include <core/subdev.h>
-struct nvkm_mm_node;
+#include <core/mm.h>
 
 #define NVKM_LTC_MAX_ZBC_CNT 16
 
 struct nvkm_ltc {
+	const struct nvkm_ltc_func *func;
 	struct nvkm_subdev subdev;
 
-	int  (*tags_alloc)(struct nvkm_ltc *, u32 count,
-			   struct nvkm_mm_node **);
-	void (*tags_free)(struct nvkm_ltc *, struct nvkm_mm_node **);
-	void (*tags_clear)(struct nvkm_ltc *, u32 first, u32 count);
+	u32 ltc_nr;
+	u32 lts_nr;
+
+	u32 num_tags;
+	u32 tag_base;
+	struct nvkm_mm tags;
+	struct nvkm_mm_node *tag_ram;
 
 	int zbc_min;
 	int zbc_max;
-	int (*zbc_color_get)(struct nvkm_ltc *, int index, const u32[4]);
-	int (*zbc_depth_get)(struct nvkm_ltc *, int index, const u32);
+	u32 zbc_color[NVKM_LTC_MAX_ZBC_CNT][4];
+	u32 zbc_depth[NVKM_LTC_MAX_ZBC_CNT];
 };
 
-static inline struct nvkm_ltc *
-nvkm_ltc(void *obj)
-{
-	return (void *)nvkm_subdev(obj, NVDEV_SUBDEV_LTC);
-}
+int nvkm_ltc_tags_alloc(struct nvkm_ltc *, u32 count, struct nvkm_mm_node **);
+void nvkm_ltc_tags_free(struct nvkm_ltc *, struct nvkm_mm_node **);
+void nvkm_ltc_tags_clear(struct nvkm_ltc *, u32 first, u32 count);
+
+int nvkm_ltc_zbc_color_get(struct nvkm_ltc *, int index, const u32[4]);
+int nvkm_ltc_zbc_depth_get(struct nvkm_ltc *, int index, const u32);
 
-extern struct nvkm_oclass *gf100_ltc_oclass;
-extern struct nvkm_oclass *gk104_ltc_oclass;
-extern struct nvkm_oclass *gm107_ltc_oclass;
+int gf100_ltc_new(struct nvkm_device *, int, struct nvkm_ltc **);
+int gk104_ltc_new(struct nvkm_device *, int, struct nvkm_ltc **);
+int gm107_ltc_new(struct nvkm_device *, int, struct nvkm_ltc **);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index 3b83f17b3a23f8..d1ee594dff56ff 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -1300,7 +1300,7 @@ nvc0_chipset = {
 	.i2c = g94_i2c_new,
 	.ibus = gf100_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gf100_ltc_new,
+	.ltc = gf100_ltc_new,
 //	.mc = gf100_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1335,7 +1335,7 @@ nvc1_chipset = {
 	.i2c = g94_i2c_new,
 	.ibus = gf100_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gf100_ltc_new,
+	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1369,7 +1369,7 @@ nvc3_chipset = {
 	.i2c = g94_i2c_new,
 	.ibus = gf100_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gf100_ltc_new,
+	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1403,7 +1403,7 @@ nvc4_chipset = {
 	.i2c = g94_i2c_new,
 	.ibus = gf100_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gf100_ltc_new,
+	.ltc = gf100_ltc_new,
 //	.mc = gf100_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1438,7 +1438,7 @@ nvc8_chipset = {
 	.i2c = g94_i2c_new,
 	.ibus = gf100_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gf100_ltc_new,
+	.ltc = gf100_ltc_new,
 //	.mc = gf100_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1473,7 +1473,7 @@ nvce_chipset = {
 	.i2c = g94_i2c_new,
 	.ibus = gf100_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gf100_ltc_new,
+	.ltc = gf100_ltc_new,
 //	.mc = gf100_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1508,7 +1508,7 @@ nvcf_chipset = {
 	.i2c = g94_i2c_new,
 	.ibus = gf100_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gf100_ltc_new,
+	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1542,7 +1542,7 @@ nvd7_chipset = {
 	.i2c = gf117_i2c_new,
 	.ibus = gf100_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gf100_ltc_new,
+	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1574,7 +1574,7 @@ nvd9_chipset = {
 	.i2c = gf119_i2c_new,
 	.ibus = gf100_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gf100_ltc_new,
+	.ltc = gf100_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1608,7 +1608,7 @@ nve4_chipset = {
 	.i2c = gk104_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gk104_ltc_new,
+	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1644,7 +1644,7 @@ nve6_chipset = {
 	.i2c = gk104_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gk104_ltc_new,
+	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1680,7 +1680,7 @@ nve7_chipset = {
 	.i2c = gk104_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gk104_ltc_new,
+	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1712,7 +1712,7 @@ nvea_chipset = {
 	.fuse = gf100_fuse_new,
 	.ibus = gk20a_ibus_new,
 	.imem = gk20a_instmem_new,
-//	.ltc = gk104_ltc_new,
+	.ltc = gk104_ltc_new,
 //	.mc = gk20a_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.pmu = gk20a_pmu_new,
@@ -1740,7 +1740,7 @@ nvf0_chipset = {
 	.i2c = gk104_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gk104_ltc_new,
+	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1776,7 +1776,7 @@ nvf1_chipset = {
 	.i2c = gf119_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gk104_ltc_new,
+	.ltc = gk104_ltc_new,
 //	.mc = gf106_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1812,7 +1812,7 @@ nv106_chipset = {
 	.i2c = gk104_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gk104_ltc_new,
+	.ltc = gk104_ltc_new,
 //	.mc = gk20a_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1847,7 +1847,7 @@ nv108_chipset = {
 	.i2c = gk104_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gk104_ltc_new,
+	.ltc = gk104_ltc_new,
 //	.mc = gk20a_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1882,7 +1882,7 @@ nv117_chipset = {
 	.i2c = gf119_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gm107_ltc_new,
+	.ltc = gm107_ltc_new,
 //	.mc = gk20a_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1911,7 +1911,7 @@ nv124_chipset = {
 	.i2c = gm204_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gm107_ltc_new,
+	.ltc = gm107_ltc_new,
 //	.mc = gk20a_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1940,7 +1940,7 @@ nv126_chipset = {
 	.i2c = gm204_i2c_new,
 	.ibus = gk104_ibus_new,
 	.imem = nv50_instmem_new,
-//	.ltc = gm107_ltc_new,
+	.ltc = gm107_ltc_new,
 //	.mc = gk20a_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mxm = nv50_mxm_new,
@@ -1965,7 +1965,7 @@ nv12b_chipset = {
 	.fuse = gm107_fuse_new,
 	.ibus = gk20a_ibus_new,
 	.imem = gk20a_instmem_new,
-//	.ltc = gm107_ltc_new,
+	.ltc = gm107_ltc_new,
 //	.mc = gk20a_mc_new,
 //	.mmu = gf100_mmu_new,
 //	.mmu = gf100_mmu_new,
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/gf100.c
index 8f9d871b545f36..e0b57ed658f5a8 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/gf100.c
@@ -32,7 +32,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -53,7 +52,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -74,7 +72,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -94,7 +91,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -115,7 +111,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -135,7 +130,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -155,7 +149,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf100_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -176,7 +169,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf110_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -196,7 +188,6 @@ gf100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_ENGINE_DMAOBJ ] =  gf110_dmaeng_oclass;
 		device->oclass[NVDEV_ENGINE_FIFO   ] =  gf100_fifo_oclass;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/gk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/gk104.c
index dcb0f6db213d3f..115931cfe18ad3 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/gk104.c
@@ -32,7 +32,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk104_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -54,7 +53,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gf110_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -76,7 +74,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk104_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -96,7 +93,6 @@ gk104_identify(struct nvkm_device *device)
 	case 0xea:
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_ENGINE_DMAOBJ ] =  gf110_dmaeng_oclass;
 		device->oclass[NVDEV_ENGINE_FIFO   ] =  gk20a_fifo_oclass;
@@ -112,7 +108,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk110_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -134,7 +129,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk110_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -156,7 +150,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
@@ -177,7 +170,6 @@ gk104_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
 		device->oclass[NVDEV_SUBDEV_VOLT   ] = &nv40_volt_oclass;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c
index 158af1f8799e04..a3c87b26dd9fc8 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c
@@ -32,7 +32,6 @@ gm100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
 
@@ -64,7 +63,6 @@ gm100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
 #if 0
@@ -93,7 +91,6 @@ gm100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MXM    ] = &nv50_mxm_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_SUBDEV_PMU    ] =  gk208_pmu_oclass;
 #if 0
@@ -118,7 +115,6 @@ gm100_identify(struct nvkm_device *device)
 		device->oclass[NVDEV_SUBDEV_MC     ] =  gk20a_mc_oclass;
 		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_MMU    ] = &gf100_mmu_oclass;
 		device->oclass[NVDEV_ENGINE_DMAOBJ ] =  gf110_dmaeng_oclass;
 		device->oclass[NVDEV_ENGINE_FIFO   ] =  gm20b_fifo_oclass;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
index 7917d141fcb0e3..2f22af2fb533fe 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
@@ -58,7 +58,7 @@ static int
 gf100_gr_zbc_color_get(struct gf100_gr *gr, int format,
 		       const u32 ds[4], const u32 l2[4])
 {
-	struct nvkm_ltc *ltc = nvkm_ltc(gr);
+	struct nvkm_ltc *ltc = gr->base.engine.subdev.device->ltc;
 	int zbc = -ENOSPC, i;
 
 	for (i = ltc->zbc_min; i <= ltc->zbc_max; i++) {
@@ -85,7 +85,7 @@ gf100_gr_zbc_color_get(struct gf100_gr *gr, int format,
 	memcpy(gr->zbc_color[zbc].ds, ds, sizeof(gr->zbc_color[zbc].ds));
 	memcpy(gr->zbc_color[zbc].l2, l2, sizeof(gr->zbc_color[zbc].l2));
 	gr->zbc_color[zbc].format = format;
-	ltc->zbc_color_get(ltc, zbc, l2);
+	nvkm_ltc_zbc_color_get(ltc, zbc, l2);
 	gf100_gr_zbc_clear_color(gr, zbc);
 	return zbc;
 }
@@ -105,7 +105,7 @@ static int
 gf100_gr_zbc_depth_get(struct gf100_gr *gr, int format,
 		       const u32 ds, const u32 l2)
 {
-	struct nvkm_ltc *ltc = nvkm_ltc(gr);
+	struct nvkm_ltc *ltc = gr->base.engine.subdev.device->ltc;
 	int zbc = -ENOSPC, i;
 
 	for (i = ltc->zbc_min; i <= ltc->zbc_max; i++) {
@@ -130,7 +130,7 @@ gf100_gr_zbc_depth_get(struct gf100_gr *gr, int format,
 	gr->zbc_depth[zbc].format = format;
 	gr->zbc_depth[zbc].ds = ds;
 	gr->zbc_depth[zbc].l2 = l2;
-	ltc->zbc_depth_get(ltc, zbc, l2);
+	nvkm_ltc_zbc_depth_get(ltc, zbc, l2);
 	gf100_gr_zbc_clear_depth(gr, zbc);
 	return zbc;
 }
@@ -680,7 +680,7 @@ gf100_gr_zbc_init(struct gf100_gr *gr)
 			      0x00000000, 0x00000000, 0x00000000, 0x00000000 };
 	const u32 f32_1[] = { 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000,
 			      0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000 };
-	struct nvkm_ltc *ltc = nvkm_ltc(gr);
+	struct nvkm_ltc *ltc = gr->base.engine.subdev.device->ltc;
 	int index;
 
 	if (!gr->zbc_color[0].format) {
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgf100.c
index 71902b64ffbc61..772425ca5a9eae 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgf100.c
@@ -434,7 +434,7 @@ gf100_ram_put(struct nvkm_ram *ram, struct nvkm_mem **pmem)
 
 	mutex_lock(&ram->fb->subdev.mutex);
 	if (mem->tag)
-		ltc->tags_free(ltc, &mem->tag);
+		nvkm_ltc_tags_free(ltc, &mem->tag);
 	__nv50_ram_put(ram, mem);
 	mutex_unlock(&ram->fb->subdev.mutex);
 
@@ -472,7 +472,7 @@ gf100_ram_get(struct nvkm_ram *ram, u64 size, u32 align, u32 ncmin,
 		/* compression only works with lpages */
 		if (align == (1 << (17 - NVKM_RAM_MM_SHIFT))) {
 			int n = size >> 5;
-			ltc->tags_alloc(ltc, n, &mem->tag);
+			nvkm_ltc_tags_alloc(ltc, n, &mem->tag);
 		}
 
 		if (unlikely(!mem->tag))
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c
index d0af1aec0fc6ac..930d25b6e63cb9 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c
@@ -23,102 +23,110 @@
  */
 #include "priv.h"
 
-static int
-nvkm_ltc_tags_alloc(struct nvkm_ltc *obj, u32 n, struct nvkm_mm_node **pnode)
-{
-	struct nvkm_ltc_priv *ltc = container_of(obj, typeof(*ltc), base);
-	int ret;
+#include <subdev/fb.h>
 
-	ret = nvkm_mm_head(&ltc->tags, 0, 1, n, n, 1, pnode);
+int
+nvkm_ltc_tags_alloc(struct nvkm_ltc *ltc, u32 n, struct nvkm_mm_node **pnode)
+{
+	int ret = nvkm_mm_head(&ltc->tags, 0, 1, n, n, 1, pnode);
 	if (ret)
 		*pnode = NULL;
-
 	return ret;
 }
 
-static void
-nvkm_ltc_tags_free(struct nvkm_ltc *obj, struct nvkm_mm_node **pnode)
+void
+nvkm_ltc_tags_free(struct nvkm_ltc *ltc, struct nvkm_mm_node **pnode)
 {
-	struct nvkm_ltc_priv *ltc = container_of(obj, typeof(*ltc), base);
 	nvkm_mm_free(&ltc->tags, pnode);
 }
 
-static void
-nvkm_ltc_tags_clear(struct nvkm_ltc *obj, u32 first, u32 count)
+void
+nvkm_ltc_tags_clear(struct nvkm_ltc *ltc, u32 first, u32 count)
 {
-	struct nvkm_ltc_priv *ltc = container_of(obj, typeof(*ltc), base);
-	const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc);
 	const u32 limit = first + count - 1;
 
 	BUG_ON((first > limit) || (limit >= ltc->num_tags));
 
-	impl->cbc_clear(ltc, first, limit);
-	impl->cbc_wait(ltc);
+	ltc->func->cbc_clear(ltc, first, limit);
+	ltc->func->cbc_wait(ltc);
 }
 
-static int
-nvkm_ltc_zbc_color_get(struct nvkm_ltc *obj, int index, const u32 color[4])
+int
+nvkm_ltc_zbc_color_get(struct nvkm_ltc *ltc, int index, const u32 color[4])
 {
-	struct nvkm_ltc_priv *ltc = container_of(obj, typeof(*ltc), base);
-	const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc);
 	memcpy(ltc->zbc_color[index], color, sizeof(ltc->zbc_color[index]));
-	impl->zbc_clear_color(ltc, index, color);
+	ltc->func->zbc_clear_color(ltc, index, color);
 	return index;
 }
 
-static int
-nvkm_ltc_zbc_depth_get(struct nvkm_ltc *obj, int index, const u32 depth)
+int
+nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth)
 {
-	struct nvkm_ltc_priv *ltc = container_of(obj, typeof(*ltc), base);
-	const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc);
 	ltc->zbc_depth[index] = depth;
-	impl->zbc_clear_depth(ltc, index, depth);
+	ltc->func->zbc_clear_depth(ltc, index, depth);
 	return index;
 }
 
-int
-_nvkm_ltc_init(struct nvkm_object *object)
+static void
+nvkm_ltc_intr(struct nvkm_subdev *subdev)
 {
-	struct nvkm_ltc_priv *ltc = (void *)object;
-	const struct nvkm_ltc_impl *impl = (void *)nv_oclass(object);
-	int ret, i;
+	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
+	ltc->func->intr(ltc);
+}
 
-	ret = nvkm_subdev_init_old(&ltc->base.subdev);
-	if (ret)
-		return ret;
+static int
+nvkm_ltc_oneinit(struct nvkm_subdev *subdev)
+{
+	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
+	return ltc->func->oneinit(ltc);
+}
+
+static int
+nvkm_ltc_init(struct nvkm_subdev *subdev)
+{
+	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
+	int i;
 
-	for (i = ltc->base.zbc_min; i <= ltc->base.zbc_max; i++) {
-		impl->zbc_clear_color(ltc, i, ltc->zbc_color[i]);
-		impl->zbc_clear_depth(ltc, i, ltc->zbc_depth[i]);
+	for (i = ltc->zbc_min; i <= ltc->zbc_max; i++) {
+		ltc->func->zbc_clear_color(ltc, i, ltc->zbc_color[i]);
+		ltc->func->zbc_clear_depth(ltc, i, ltc->zbc_depth[i]);
 	}
 
+	ltc->func->init(ltc);
 	return 0;
 }
 
+static void *
+nvkm_ltc_dtor(struct nvkm_subdev *subdev)
+{
+	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
+	struct nvkm_ram *ram = ltc->subdev.device->fb->ram;
+	nvkm_mm_fini(&ltc->tags);
+	if (ram)
+		nvkm_mm_free(&ram->vram, &ltc->tag_ram);
+	return ltc;
+}
+
+static const struct nvkm_subdev_func
+nvkm_ltc = {
+	.dtor = nvkm_ltc_dtor,
+	.oneinit = nvkm_ltc_oneinit,
+	.init = nvkm_ltc_init,
+	.intr = nvkm_ltc_intr,
+};
+
 int
-nvkm_ltc_create_(struct nvkm_object *parent, struct nvkm_object *engine,
-		 struct nvkm_oclass *oclass, int length, void **pobject)
+nvkm_ltc_new_(const struct nvkm_ltc_func *func, struct nvkm_device *device,
+	      int index, struct nvkm_ltc **pltc)
 {
-	const struct nvkm_ltc_impl *impl = (void *)oclass;
-	struct nvkm_ltc_priv *ltc;
-	int ret;
+	struct nvkm_ltc *ltc;
 
-	ret = nvkm_subdev_create_(parent, engine, oclass, 0, "PLTCG",
-				  "l2c", length, pobject);
-	ltc = *pobject;
-	if (ret)
-		return ret;
-
-	memset(ltc->zbc_color, 0x00, sizeof(ltc->zbc_color));
-	memset(ltc->zbc_depth, 0x00, sizeof(ltc->zbc_depth));
-
-	ltc->base.subdev.intr = impl->intr;
-	ltc->base.tags_alloc = nvkm_ltc_tags_alloc;
-	ltc->base.tags_free = nvkm_ltc_tags_free;
-	ltc->base.tags_clear = nvkm_ltc_tags_clear;
-	ltc->base.zbc_min = 1; /* reserve 0 for disabled */
-	ltc->base.zbc_max = min(impl->zbc, NVKM_LTC_MAX_ZBC_CNT) - 1;
-	ltc->base.zbc_color_get = nvkm_ltc_zbc_color_get;
-	ltc->base.zbc_depth_get = nvkm_ltc_zbc_depth_get;
+	if (!(ltc = *pltc = kzalloc(sizeof(*ltc), GFP_KERNEL)))
+		return -ENOMEM;
+
+	nvkm_subdev_ctor(&nvkm_ltc, device, index, 0, &ltc->subdev);
+	ltc->func = func;
+	ltc->zbc_min = 1; /* reserve 0 for disabled */
+	ltc->zbc_max = min(func->zbc, NVKM_LTC_MAX_ZBC_CNT) - 1;
 	return 0;
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c
index 5cb7604beeb60e..45ac765b753ed0 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c
@@ -28,18 +28,18 @@
 #include <subdev/timer.h>
 
 void
-gf100_ltc_cbc_clear(struct nvkm_ltc_priv *ltc, u32 start, u32 limit)
+gf100_ltc_cbc_clear(struct nvkm_ltc *ltc, u32 start, u32 limit)
 {
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	nvkm_wr32(device, 0x17e8cc, start);
 	nvkm_wr32(device, 0x17e8d0, limit);
 	nvkm_wr32(device, 0x17e8c8, 0x00000004);
 }
 
 void
-gf100_ltc_cbc_wait(struct nvkm_ltc_priv *ltc)
+gf100_ltc_cbc_wait(struct nvkm_ltc *ltc)
 {
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	int c, s;
 	for (c = 0; c < ltc->ltc_nr; c++) {
 		for (s = 0; s < ltc->lts_nr; s++) {
@@ -53,9 +53,9 @@ gf100_ltc_cbc_wait(struct nvkm_ltc_priv *ltc)
 }
 
 void
-gf100_ltc_zbc_clear_color(struct nvkm_ltc_priv *ltc, int i, const u32 color[4])
+gf100_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4])
 {
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	nvkm_mask(device, 0x17ea44, 0x0000000f, i);
 	nvkm_wr32(device, 0x17ea48, color[0]);
 	nvkm_wr32(device, 0x17ea4c, color[1]);
@@ -64,9 +64,9 @@ gf100_ltc_zbc_clear_color(struct nvkm_ltc_priv *ltc, int i, const u32 color[4])
 }
 
 void
-gf100_ltc_zbc_clear_depth(struct nvkm_ltc_priv *ltc, int i, const u32 depth)
+gf100_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth)
 {
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	nvkm_mask(device, 0x17ea44, 0x0000000f, i);
 	nvkm_wr32(device, 0x17ea58, depth);
 }
@@ -90,9 +90,9 @@ gf100_ltc_lts_intr_name[] = {
 };
 
 static void
-gf100_ltc_lts_intr(struct nvkm_ltc_priv *ltc, int c, int s)
+gf100_ltc_lts_intr(struct nvkm_ltc *ltc, int c, int s)
 {
-	struct nvkm_subdev *subdev = &ltc->base.subdev;
+	struct nvkm_subdev *subdev = &ltc->subdev;
 	struct nvkm_device *device = subdev->device;
 	u32 base = 0x141000 + (c * 0x2000) + (s * 0x400);
 	u32 intr = nvkm_rd32(device, base + 0x020);
@@ -108,10 +108,9 @@ gf100_ltc_lts_intr(struct nvkm_ltc_priv *ltc, int c, int s)
 }
 
 void
-gf100_ltc_intr(struct nvkm_subdev *subdev)
+gf100_ltc_intr(struct nvkm_ltc *ltc)
 {
-	struct nvkm_ltc_priv *ltc = (void *)subdev;
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	u32 mask;
 
 	mask = nvkm_rd32(device, 0x00017c);
@@ -123,44 +122,12 @@ gf100_ltc_intr(struct nvkm_subdev *subdev)
 	}
 }
 
-static int
-gf100_ltc_init(struct nvkm_object *object)
-{
-	struct nvkm_ltc_priv *ltc = (void *)object;
-	struct nvkm_device *device = ltc->base.subdev.device;
-	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
-	int ret;
-
-	ret = nvkm_ltc_init(ltc);
-	if (ret)
-		return ret;
-
-	nvkm_mask(device, 0x17e820, 0x00100000, 0x00000000); /* INTR_EN &= ~0x10 */
-	nvkm_wr32(device, 0x17e8d8, ltc->ltc_nr);
-	nvkm_wr32(device, 0x17e8d4, ltc->tag_base);
-	nvkm_mask(device, 0x17e8c0, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
-	return 0;
-}
-
-void
-gf100_ltc_dtor(struct nvkm_object *object)
-{
-	struct nvkm_ltc_priv *ltc = (void *)object;
-	struct nvkm_ram *ram = ltc->base.subdev.device->fb->ram;
-
-	nvkm_mm_fini(&ltc->tags);
-	if (ram)
-		nvkm_mm_free(&ram->vram, &ltc->tag_ram);
-
-	nvkm_ltc_destroy(ltc);
-}
-
 /* TODO: Figure out tag memory details and drop the over-cautious allocation.
  */
 int
-gf100_ltc_init_tag_ram(struct nvkm_ltc_priv *ltc)
+gf100_ltc_oneinit_tag_ram(struct nvkm_ltc *ltc)
 {
-	struct nvkm_ram *ram = ltc->base.subdev.device->fb->ram;
+	struct nvkm_ram *ram = ltc->subdev.device->fb->ram;
 	u32 tag_size, tag_margin, tag_align;
 	int ret;
 
@@ -205,54 +172,53 @@ gf100_ltc_init_tag_ram(struct nvkm_ltc_priv *ltc)
 	}
 
 mm_init:
-	ret = nvkm_mm_init(&ltc->tags, 0, ltc->num_tags, 1);
-	return ret;
+	return nvkm_mm_init(&ltc->tags, 0, ltc->num_tags, 1);
 }
 
 int
-gf100_ltc_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-	       struct nvkm_oclass *oclass, void *data, u32 size,
-	       struct nvkm_object **pobject)
+gf100_ltc_oneinit(struct nvkm_ltc *ltc)
 {
-	struct nvkm_device *device = (void *)parent;
-	struct nvkm_ltc_priv *ltc;
-	u32 parts, mask;
-	int ret, i;
-
-	ret = nvkm_ltc_create(parent, engine, oclass, &ltc);
-	*pobject = nv_object(ltc);
-	if (ret)
-		return ret;
+	struct nvkm_device *device = ltc->subdev.device;
+	const u32 parts = nvkm_rd32(device, 0x022438);
+	const u32  mask = nvkm_rd32(device, 0x022554);
+	const u32 slice = nvkm_rd32(device, 0x17e8dc) >> 28;
+	int i;
 
-	parts = nvkm_rd32(device, 0x022438);
-	mask = nvkm_rd32(device, 0x022554);
 	for (i = 0; i < parts; i++) {
 		if (!(mask & (1 << i)))
 			ltc->ltc_nr++;
 	}
-	ltc->lts_nr = nvkm_rd32(device, 0x17e8dc) >> 28;
+	ltc->lts_nr = slice;
+
+	return gf100_ltc_oneinit_tag_ram(ltc);
+}
 
-	ret = gf100_ltc_init_tag_ram(ltc);
-	if (ret)
-		return ret;
+static void
+gf100_ltc_init(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
 
-	nv_subdev(ltc)->intr = gf100_ltc_intr;
-	return 0;
+	nvkm_mask(device, 0x17e820, 0x00100000, 0x00000000); /* INTR_EN &= ~0x10 */
+	nvkm_wr32(device, 0x17e8d8, ltc->ltc_nr);
+	nvkm_wr32(device, 0x17e8d4, ltc->tag_base);
+	nvkm_mask(device, 0x17e8c0, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
 }
 
-struct nvkm_oclass *
-gf100_ltc_oclass = &(struct nvkm_ltc_impl) {
-	.base.handle = NV_SUBDEV(LTC, 0xc0),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = gf100_ltc_ctor,
-		.dtor = gf100_ltc_dtor,
-		.init = gf100_ltc_init,
-		.fini = _nvkm_ltc_fini,
-	},
+static const struct nvkm_ltc_func
+gf100_ltc = {
+	.oneinit = gf100_ltc_oneinit,
+	.init = gf100_ltc_init,
 	.intr = gf100_ltc_intr,
 	.cbc_clear = gf100_ltc_cbc_clear,
 	.cbc_wait = gf100_ltc_cbc_wait,
 	.zbc = 16,
 	.zbc_clear_color = gf100_ltc_zbc_clear_color,
 	.zbc_clear_depth = gf100_ltc_zbc_clear_depth,
-}.base;
+};
+
+int
+gf100_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
+{
+	return nvkm_ltc_new_(&gf100_ltc, device, index, pltc);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gk104.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gk104.c
index a1f97d2ec36f11..839e6b4c597b27 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gk104.c
@@ -23,38 +23,32 @@
  */
 #include "priv.h"
 
-static int
-gk104_ltc_init(struct nvkm_object *object)
+static void
+gk104_ltc_init(struct nvkm_ltc *ltc)
 {
-	struct nvkm_ltc_priv *ltc = (void *)object;
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
-	int ret;
-
-	ret = nvkm_ltc_init(ltc);
-	if (ret)
-		return ret;
 
 	nvkm_wr32(device, 0x17e8d8, ltc->ltc_nr);
 	nvkm_wr32(device, 0x17e000, ltc->ltc_nr);
 	nvkm_wr32(device, 0x17e8d4, ltc->tag_base);
 	nvkm_mask(device, 0x17e8c0, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
-	return 0;
 }
 
-struct nvkm_oclass *
-gk104_ltc_oclass = &(struct nvkm_ltc_impl) {
-	.base.handle = NV_SUBDEV(LTC, 0xe4),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = gf100_ltc_ctor,
-		.dtor = gf100_ltc_dtor,
-		.init = gk104_ltc_init,
-		.fini = _nvkm_ltc_fini,
-	},
+static const struct nvkm_ltc_func
+gk104_ltc = {
+	.oneinit = gf100_ltc_oneinit,
+	.init = gk104_ltc_init,
 	.intr = gf100_ltc_intr,
 	.cbc_clear = gf100_ltc_cbc_clear,
 	.cbc_wait = gf100_ltc_cbc_wait,
 	.zbc = 16,
 	.zbc_clear_color = gf100_ltc_zbc_clear_color,
 	.zbc_clear_depth = gf100_ltc_zbc_clear_depth,
-}.base;
+};
+
+int
+gk104_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
+{
+	return nvkm_ltc_new_(&gk104_ltc, device, index, pltc);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gm107.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gm107.c
index 431acbef6bb7df..389331bb63bae0 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gm107.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gm107.c
@@ -27,18 +27,18 @@
 #include <subdev/timer.h>
 
 static void
-gm107_ltc_cbc_clear(struct nvkm_ltc_priv *ltc, u32 start, u32 limit)
+gm107_ltc_cbc_clear(struct nvkm_ltc *ltc, u32 start, u32 limit)
 {
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	nvkm_wr32(device, 0x17e270, start);
 	nvkm_wr32(device, 0x17e274, limit);
 	nvkm_wr32(device, 0x17e26c, 0x00000004);
 }
 
 static void
-gm107_ltc_cbc_wait(struct nvkm_ltc_priv *ltc)
+gm107_ltc_cbc_wait(struct nvkm_ltc *ltc)
 {
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	int c, s;
 	for (c = 0; c < ltc->ltc_nr; c++) {
 		for (s = 0; s < ltc->lts_nr; s++) {
@@ -52,9 +52,9 @@ gm107_ltc_cbc_wait(struct nvkm_ltc_priv *ltc)
 }
 
 static void
-gm107_ltc_zbc_clear_color(struct nvkm_ltc_priv *ltc, int i, const u32 color[4])
+gm107_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4])
 {
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	nvkm_mask(device, 0x17e338, 0x0000000f, i);
 	nvkm_wr32(device, 0x17e33c, color[0]);
 	nvkm_wr32(device, 0x17e340, color[1]);
@@ -63,17 +63,17 @@ gm107_ltc_zbc_clear_color(struct nvkm_ltc_priv *ltc, int i, const u32 color[4])
 }
 
 static void
-gm107_ltc_zbc_clear_depth(struct nvkm_ltc_priv *ltc, int i, const u32 depth)
+gm107_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth)
 {
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	nvkm_mask(device, 0x17e338, 0x0000000f, i);
 	nvkm_wr32(device, 0x17e34c, depth);
 }
 
 static void
-gm107_ltc_lts_isr(struct nvkm_ltc_priv *ltc, int c, int s)
+gm107_ltc_lts_isr(struct nvkm_ltc *ltc, int c, int s)
 {
-	struct nvkm_subdev *subdev = &ltc->base.subdev;
+	struct nvkm_subdev *subdev = &ltc->subdev;
 	struct nvkm_device *device = subdev->device;
 	u32 base = 0x140000 + (c * 0x2000) + (s * 0x400);
 	u32 stat = nvkm_rd32(device, base + 0x00c);
@@ -85,10 +85,9 @@ gm107_ltc_lts_isr(struct nvkm_ltc_priv *ltc, int c, int s)
 }
 
 static void
-gm107_ltc_intr(struct nvkm_subdev *subdev)
+gm107_ltc_intr(struct nvkm_ltc *ltc)
 {
-	struct nvkm_ltc_priv *ltc = (void *)subdev;
-	struct nvkm_device *device = ltc->base.subdev.device;
+	struct nvkm_device *device = ltc->subdev.device;
 	u32 mask;
 
 	mask = nvkm_rd32(device, 0x00017c);
@@ -101,66 +100,48 @@ gm107_ltc_intr(struct nvkm_subdev *subdev)
 }
 
 static int
-gm107_ltc_init(struct nvkm_object *object)
+gm107_ltc_oneinit(struct nvkm_ltc *ltc)
 {
-	struct nvkm_ltc_priv *ltc = (void *)object;
-	struct nvkm_device *device = ltc->base.subdev.device;
-	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
-	int ret;
-
-	ret = nvkm_ltc_init(ltc);
-	if (ret)
-		return ret;
-
-	nvkm_wr32(device, 0x17e27c, ltc->ltc_nr);
-	nvkm_wr32(device, 0x17e278, ltc->tag_base);
-	nvkm_mask(device, 0x17e264, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
-	return 0;
-}
+	struct nvkm_device *device = ltc->subdev.device;
+	const u32 parts = nvkm_rd32(device, 0x022438);
+	const u32  mask = nvkm_rd32(device, 0x021c14);
+	const u32 slice = nvkm_rd32(device, 0x17e280) >> 28;
+	int i;
 
-static int
-gm107_ltc_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
-	       struct nvkm_oclass *oclass, void *data, u32 size,
-	       struct nvkm_object **pobject)
-{
-	struct nvkm_device *device = (void *)parent;
-	struct nvkm_ltc_priv *ltc;
-	u32 parts, mask;
-	int ret, i;
-
-	ret = nvkm_ltc_create(parent, engine, oclass, &ltc);
-	*pobject = nv_object(ltc);
-	if (ret)
-		return ret;
-
-	parts = nvkm_rd32(device, 0x022438);
-	mask = nvkm_rd32(device, 0x021c14);
 	for (i = 0; i < parts; i++) {
 		if (!(mask & (1 << i)))
 			ltc->ltc_nr++;
 	}
-	ltc->lts_nr = nvkm_rd32(device, 0x17e280) >> 28;
+	ltc->lts_nr = slice;
+
+	return gf100_ltc_oneinit_tag_ram(ltc);
+}
 
-	ret = gf100_ltc_init_tag_ram(ltc);
-	if (ret)
-		return ret;
+static void
+gm107_ltc_init(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
 
-	return 0;
+	nvkm_wr32(device, 0x17e27c, ltc->ltc_nr);
+	nvkm_wr32(device, 0x17e278, ltc->tag_base);
+	nvkm_mask(device, 0x17e264, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
 }
 
-struct nvkm_oclass *
-gm107_ltc_oclass = &(struct nvkm_ltc_impl) {
-	.base.handle = NV_SUBDEV(LTC, 0xff),
-	.base.ofuncs = &(struct nvkm_ofuncs) {
-		.ctor = gm107_ltc_ctor,
-		.dtor = gf100_ltc_dtor,
-		.init = gm107_ltc_init,
-		.fini = _nvkm_ltc_fini,
-	},
+static const struct nvkm_ltc_func
+gm107_ltc = {
+	.oneinit = gm107_ltc_oneinit,
+	.init = gm107_ltc_init,
 	.intr = gm107_ltc_intr,
 	.cbc_clear = gm107_ltc_cbc_clear,
 	.cbc_wait = gm107_ltc_cbc_wait,
 	.zbc = 16,
 	.zbc_clear_color = gm107_ltc_zbc_clear_color,
 	.zbc_clear_depth = gm107_ltc_zbc_clear_depth,
-}.base;
+};
+
+int
+gm107_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
+{
+	return nvkm_ltc_new_(&gm107_ltc, device, index, pltc);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/priv.h
index 0544288b0d1d0d..4e05037cc99f96 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/priv.h
@@ -1,69 +1,29 @@
 #ifndef __NVKM_LTC_PRIV_H__
 #define __NVKM_LTC_PRIV_H__
+#define nvkm_ltc(p) container_of((p), struct nvkm_ltc, subdev)
 #include <subdev/ltc.h>
 
-#include <core/mm.h>
-struct nvkm_fb;
+int nvkm_ltc_new_(const struct nvkm_ltc_func *, struct nvkm_device *,
+		  int index, struct nvkm_ltc **);
 
-struct nvkm_ltc_priv {
-	struct nvkm_ltc base;
-	u32 ltc_nr;
-	u32 lts_nr;
+struct nvkm_ltc_func {
+	int  (*oneinit)(struct nvkm_ltc *);
+	void (*init)(struct nvkm_ltc *);
+	void (*intr)(struct nvkm_ltc *);
 
-	u32 num_tags;
-	u32 tag_base;
-	struct nvkm_mm tags;
-	struct nvkm_mm_node *tag_ram;
-
-	u32 zbc_color[NVKM_LTC_MAX_ZBC_CNT][4];
-	u32 zbc_depth[NVKM_LTC_MAX_ZBC_CNT];
-};
-
-#define nvkm_ltc_create(p,e,o,d)                                               \
-	nvkm_ltc_create_((p), (e), (o), sizeof(**d), (void **)d)
-#define nvkm_ltc_destroy(p) ({                                                 \
-	struct nvkm_ltc_priv *_priv = (p);                                     \
-	_nvkm_ltc_dtor(nv_object(_priv));                                      \
-})
-#define nvkm_ltc_init(p) ({                                                    \
-	struct nvkm_ltc_priv *_priv = (p);                                     \
-	_nvkm_ltc_init(nv_object(_priv));                                      \
-})
-#define nvkm_ltc_fini(p,s) ({                                                  \
-	struct nvkm_ltc_priv *_priv = (p);                                     \
-	_nvkm_ltc_fini(nv_object(_priv), (s));                                 \
-})
-
-int  nvkm_ltc_create_(struct nvkm_object *, struct nvkm_object *,
-		      struct nvkm_oclass *, int, void **);
-
-#define _nvkm_ltc_dtor _nvkm_subdev_dtor
-int _nvkm_ltc_init(struct nvkm_object *);
-#define _nvkm_ltc_fini _nvkm_subdev_fini
-
-int  gf100_ltc_ctor(struct nvkm_object *, struct nvkm_object *,
-		    struct nvkm_oclass *, void *, u32,
-		    struct nvkm_object **);
-void gf100_ltc_dtor(struct nvkm_object *);
-int  gf100_ltc_init_tag_ram(struct nvkm_ltc_priv *);
-int  gf100_ltc_tags_alloc(struct nvkm_ltc *, u32, struct nvkm_mm_node **);
-void gf100_ltc_tags_free(struct nvkm_ltc *, struct nvkm_mm_node **);
-
-struct nvkm_ltc_impl {
-	struct nvkm_oclass base;
-	void (*intr)(struct nvkm_subdev *);
-
-	void (*cbc_clear)(struct nvkm_ltc_priv *, u32 start, u32 limit);
-	void (*cbc_wait)(struct nvkm_ltc_priv *);
+	void (*cbc_clear)(struct nvkm_ltc *, u32 start, u32 limit);
+	void (*cbc_wait)(struct nvkm_ltc *);
 
 	int zbc;
-	void (*zbc_clear_color)(struct nvkm_ltc_priv *, int, const u32[4]);
-	void (*zbc_clear_depth)(struct nvkm_ltc_priv *, int, const u32);
+	void (*zbc_clear_color)(struct nvkm_ltc *, int, const u32[4]);
+	void (*zbc_clear_depth)(struct nvkm_ltc *, int, const u32);
 };
 
-void gf100_ltc_intr(struct nvkm_subdev *);
-void gf100_ltc_cbc_clear(struct nvkm_ltc_priv *, u32, u32);
-void gf100_ltc_cbc_wait(struct nvkm_ltc_priv *);
-void gf100_ltc_zbc_clear_color(struct nvkm_ltc_priv *, int, const u32[4]);
-void gf100_ltc_zbc_clear_depth(struct nvkm_ltc_priv *, int, const u32);
+int gf100_ltc_oneinit(struct nvkm_ltc *);
+int gf100_ltc_oneinit_tag_ram(struct nvkm_ltc *);
+void gf100_ltc_intr(struct nvkm_ltc *);
+void gf100_ltc_cbc_clear(struct nvkm_ltc *, u32, u32);
+void gf100_ltc_cbc_wait(struct nvkm_ltc *);
+void gf100_ltc_zbc_clear_color(struct nvkm_ltc *, int, const u32[4]);
+void gf100_ltc_zbc_clear_depth(struct nvkm_ltc *, int, const u32);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c
index e1374a01463a99..6a2a2d575f169c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c
@@ -108,11 +108,11 @@ gf100_vm_map(struct nvkm_vma *vma, struct nvkm_memory *pgt,
 	pte <<= 3;
 
 	if (mem->tag) {
-		struct nvkm_ltc *ltc = nvkm_ltc(vma->vm->mmu);
+		struct nvkm_ltc *ltc = vma->vm->mmu->subdev.device->ltc;
 		u32 tag = mem->tag->offset + (delta >> 17);
 		phys |= (u64)tag << (32 + 12);
 		next |= (u64)1   << (32 + 12);
-		ltc->tags_clear(ltc, tag, cnt);
+		nvkm_ltc_tags_clear(ltc, tag, cnt);
 	}
 
 	nvkm_kmap(pgt);