Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 917 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/Kbuild
new file mode 100644
index 000000000..728d75010
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/Kbuild
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: MIT
+nvkm-y += nvkm/subdev/ltc/base.o
+nvkm-y += nvkm/subdev/ltc/gf100.o
+nvkm-y += nvkm/subdev/ltc/gk104.o
+nvkm-y += nvkm/subdev/ltc/gm107.o
+nvkm-y += nvkm/subdev/ltc/gm200.o
+nvkm-y += nvkm/subdev/ltc/gp100.o
+nvkm-y += nvkm/subdev/ltc/gp102.o
+nvkm-y += nvkm/subdev/ltc/gp10b.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c
new file mode 100644
index 000000000..23242179e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright 2014 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"
+
+#include <core/memory.h>
+
+void
+nvkm_ltc_tags_clear(struct nvkm_device *device, u32 first, u32 count)
+{
+	struct nvkm_ltc *ltc = device->ltc;
+	const u32 limit = first + count - 1;
+
+	BUG_ON((first > limit) || (limit >= ltc->num_tags));
+
+	mutex_lock(&ltc->subdev.mutex);
+	ltc->func->cbc_clear(ltc, first, limit);
+	ltc->func->cbc_wait(ltc);
+	mutex_unlock(&ltc->subdev.mutex);
+}
+
+int
+nvkm_ltc_zbc_color_get(struct nvkm_ltc *ltc, int index, const u32 color[4])
+{
+	memcpy(ltc->zbc_color[index], color, sizeof(ltc->zbc_color[index]));
+	ltc->func->zbc_clear_color(ltc, index, color);
+	return index;
+}
+
+int
+nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth)
+{
+	ltc->zbc_depth[index] = depth;
+	ltc->func->zbc_clear_depth(ltc, index, depth);
+	return index;
+}
+
+int
+nvkm_ltc_zbc_stencil_get(struct nvkm_ltc *ltc, int index, const u32 stencil)
+{
+	ltc->zbc_stencil[index] = stencil;
+	ltc->func->zbc_clear_stencil(ltc, index, stencil);
+	return index;
+}
+
+void
+nvkm_ltc_invalidate(struct nvkm_ltc *ltc)
+{
+	if (ltc->func->invalidate)
+		ltc->func->invalidate(ltc);
+}
+
+void
+nvkm_ltc_flush(struct nvkm_ltc *ltc)
+{
+	if (ltc->func->flush)
+		ltc->func->flush(ltc);
+}
+
+static void
+nvkm_ltc_intr(struct nvkm_subdev *subdev)
+{
+	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
+	ltc->func->intr(ltc);
+}
+
+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->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]);
+		if (ltc->func->zbc_clear_stencil)
+			ltc->func->zbc_clear_stencil(ltc, i, ltc->zbc_stencil[i]);
+	}
+
+	ltc->func->init(ltc);
+	return 0;
+}
+
+static void *
+nvkm_ltc_dtor(struct nvkm_subdev *subdev)
+{
+	struct nvkm_ltc *ltc = nvkm_ltc(subdev);
+	nvkm_memory_unref(&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_new_(const struct nvkm_ltc_func *func, struct nvkm_device *device,
+	      int index, struct nvkm_ltc **pltc)
+{
+	struct nvkm_ltc *ltc;
+
+	if (!(ltc = *pltc = kzalloc(sizeof(*ltc), GFP_KERNEL)))
+		return -ENOMEM;
+
+	nvkm_subdev_ctor(&nvkm_ltc, device, index, &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
new file mode 100644
index 000000000..a21ef45b8
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gf100.c
@@ -0,0 +1,255 @@
+/*
+ * Copyright 2012 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
+ */
+#include "priv.h"
+
+#include <core/memory.h>
+#include <subdev/fb.h>
+#include <subdev/timer.h>
+
+void
+gf100_ltc_cbc_clear(struct nvkm_ltc *ltc, u32 start, u32 limit)
+{
+	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 *ltc)
+{
+	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++) {
+			const u32 addr = 0x1410c8 + (c * 0x2000) + (s * 0x400);
+			nvkm_msec(device, 2000,
+				if (!nvkm_rd32(device, addr))
+					break;
+			);
+		}
+	}
+}
+
+void
+gf100_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4])
+{
+	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]);
+	nvkm_wr32(device, 0x17ea50, color[2]);
+	nvkm_wr32(device, 0x17ea54, color[3]);
+}
+
+void
+gf100_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	nvkm_mask(device, 0x17ea44, 0x0000000f, i);
+	nvkm_wr32(device, 0x17ea58, depth);
+}
+
+const struct nvkm_bitfield
+gf100_ltc_lts_intr_name[] = {
+	{ 0x00000001, "IDLE_ERROR_IQ" },
+	{ 0x00000002, "IDLE_ERROR_CBC" },
+	{ 0x00000004, "IDLE_ERROR_TSTG" },
+	{ 0x00000008, "IDLE_ERROR_DSTG" },
+	{ 0x00000010, "EVICTED_CB" },
+	{ 0x00000020, "ILLEGAL_COMPSTAT" },
+	{ 0x00000040, "BLOCKLINEAR_CB" },
+	{ 0x00000100, "ECC_SEC_ERROR" },
+	{ 0x00000200, "ECC_DED_ERROR" },
+	{ 0x00000400, "DEBUG" },
+	{ 0x00000800, "ATOMIC_TO_Z" },
+	{ 0x00001000, "ILLEGAL_ATOMIC" },
+	{ 0x00002000, "BLKACTIVITY_ERR" },
+	{}
+};
+
+static void
+gf100_ltc_lts_intr(struct nvkm_ltc *ltc, int c, int s)
+{
+	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);
+	u32 stat = intr & 0x0000ffff;
+	char msg[128];
+
+	if (stat) {
+		nvkm_snprintbf(msg, sizeof(msg), gf100_ltc_lts_intr_name, stat);
+		nvkm_error(subdev, "LTC%d_LTS%d: %08x [%s]\n", c, s, stat, msg);
+	}
+
+	nvkm_wr32(device, base + 0x020, intr);
+}
+
+void
+gf100_ltc_intr(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	u32 mask;
+
+	mask = nvkm_rd32(device, 0x00017c);
+	while (mask) {
+		u32 s, c = __ffs(mask);
+		for (s = 0; s < ltc->lts_nr; s++)
+			gf100_ltc_lts_intr(ltc, c, s);
+		mask &= ~(1 << c);
+	}
+}
+
+void
+gf100_ltc_invalidate(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	s64 taken;
+
+	nvkm_wr32(device, 0x70004, 0x00000001);
+	taken = nvkm_wait_msec(device, 2000, 0x70004, 0x00000003, 0x00000000);
+
+	if (taken > 0)
+		nvkm_debug(&ltc->subdev, "LTC invalidate took %lld ns\n", taken);
+}
+
+void
+gf100_ltc_flush(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	s64 taken;
+
+	nvkm_wr32(device, 0x70010, 0x00000001);
+	taken = nvkm_wait_msec(device, 2000, 0x70010, 0x00000003, 0x00000000);
+
+	if (taken > 0)
+		nvkm_debug(&ltc->subdev, "LTC flush took %lld ns\n", taken);
+}
+
+/* TODO: Figure out tag memory details and drop the over-cautious allocation.
+ */
+int
+gf100_ltc_oneinit_tag_ram(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	struct nvkm_fb *fb = device->fb;
+	struct nvkm_ram *ram = fb->ram;
+	u32 bits = (nvkm_rd32(device, 0x100c80) & 0x00001000) ? 16 : 17;
+	u32 tag_size, tag_margin, tag_align;
+	int ret;
+
+	/* No VRAM, no tags for now. */
+	if (!ram) {
+		ltc->num_tags = 0;
+		goto mm_init;
+	}
+
+	/* tags for 1/4 of VRAM should be enough (8192/4 per GiB of VRAM) */
+	ltc->num_tags = (ram->size >> 17) / 4;
+	if (ltc->num_tags > (1 << bits))
+		ltc->num_tags = 1 << bits; /* we have 16/17 bits in PTE */
+	ltc->num_tags = (ltc->num_tags + 63) & ~63; /* round up to 64 */
+
+	tag_align = ltc->ltc_nr * 0x800;
+	tag_margin = (tag_align < 0x6000) ? 0x6000 : tag_align;
+
+	/* 4 part 4 sub: 0x2000 bytes for 56 tags */
+	/* 3 part 4 sub: 0x6000 bytes for 168 tags */
+	/*
+	 * About 147 bytes per tag. Let's be safe and allocate x2, which makes
+	 * 0x4980 bytes for 64 tags, and round up to 0x6000 bytes for 64 tags.
+	 *
+	 * For 4 GiB of memory we'll have 8192 tags which makes 3 MiB, < 0.1 %.
+	 */
+	tag_size  = (ltc->num_tags / 64) * 0x6000 + tag_margin;
+	tag_size += tag_align;
+
+	ret = nvkm_ram_get(device, NVKM_RAM_MM_NORMAL, 0x01, 12, tag_size,
+			   true, true, &ltc->tag_ram);
+	if (ret) {
+		ltc->num_tags = 0;
+	} else {
+		u64 tag_base = nvkm_memory_addr(ltc->tag_ram) + tag_margin;
+
+		tag_base += tag_align - 1;
+		do_div(tag_base, tag_align);
+
+		ltc->tag_base = tag_base;
+	}
+
+mm_init:
+	nvkm_mm_fini(&fb->tags);
+	return nvkm_mm_init(&fb->tags, 0, 0, ltc->num_tags, 1);
+}
+
+int
+gf100_ltc_oneinit(struct nvkm_ltc *ltc)
+{
+	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;
+
+	for (i = 0; i < parts; i++) {
+		if (!(mask & (1 << i)))
+			ltc->ltc_nr++;
+	}
+	ltc->lts_nr = slice;
+
+	return gf100_ltc_oneinit_tag_ram(ltc);
+}
+
+static void
+gf100_ltc_init(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
+
+	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);
+}
+
+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,
+	.invalidate = gf100_ltc_invalidate,
+	.flush = gf100_ltc_flush,
+};
+
+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
new file mode 100644
index 000000000..b4f6e0034
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gk104.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2012 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
+ */
+#include "priv.h"
+
+static void
+gk104_ltc_init(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
+
+	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);
+}
+
+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,
+	.invalidate = gf100_ltc_invalidate,
+	.flush = gf100_ltc_flush,
+};
+
+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
new file mode 100644
index 000000000..ec0a3844b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gm107.c
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2014 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
+ */
+#include "priv.h"
+
+#include <subdev/fb.h>
+#include <subdev/timer.h>
+
+void
+gm107_ltc_cbc_clear(struct nvkm_ltc *ltc, u32 start, u32 limit)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	nvkm_wr32(device, 0x17e270, start);
+	nvkm_wr32(device, 0x17e274, limit);
+	nvkm_mask(device, 0x17e26c, 0x00000000, 0x00000004);
+}
+
+void
+gm107_ltc_cbc_wait(struct nvkm_ltc *ltc)
+{
+	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++) {
+			const u32 addr = 0x14046c + (c * 0x2000) + (s * 0x200);
+			nvkm_wait_msec(device, 2000, addr,
+				       0x00000004, 0x00000000);
+		}
+	}
+}
+
+void
+gm107_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4])
+{
+	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]);
+	nvkm_wr32(device, 0x17e344, color[2]);
+	nvkm_wr32(device, 0x17e348, color[3]);
+}
+
+void
+gm107_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	nvkm_mask(device, 0x17e338, 0x0000000f, i);
+	nvkm_wr32(device, 0x17e34c, depth);
+}
+
+void
+gm107_ltc_intr_lts(struct nvkm_ltc *ltc, int c, int s)
+{
+	struct nvkm_subdev *subdev = &ltc->subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 base = 0x140400 + (c * 0x2000) + (s * 0x200);
+	u32 intr = nvkm_rd32(device, base + 0x00c);
+	u16 stat = intr & 0x0000ffff;
+	char msg[128];
+
+	if (stat) {
+		nvkm_snprintbf(msg, sizeof(msg), gf100_ltc_lts_intr_name, stat);
+		nvkm_error(subdev, "LTC%d_LTS%d: %08x [%s]\n", c, s, intr, msg);
+	}
+
+	nvkm_wr32(device, base + 0x00c, intr);
+}
+
+void
+gm107_ltc_intr(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	u32 mask;
+
+	mask = nvkm_rd32(device, 0x00017c);
+	while (mask) {
+		u32 s, c = __ffs(mask);
+		for (s = 0; s < ltc->lts_nr; s++)
+			gm107_ltc_intr_lts(ltc, c, s);
+		mask &= ~(1 << c);
+	}
+}
+
+static int
+gm107_ltc_oneinit(struct nvkm_ltc *ltc)
+{
+	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;
+
+	for (i = 0; i < parts; i++) {
+		if (!(mask & (1 << i)))
+			ltc->ltc_nr++;
+	}
+	ltc->lts_nr = slice;
+
+	return gf100_ltc_oneinit_tag_ram(ltc);
+}
+
+static void
+gm107_ltc_init(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
+
+	nvkm_wr32(device, 0x17e27c, ltc->ltc_nr);
+	nvkm_wr32(device, 0x17e278, ltc->tag_base);
+	nvkm_mask(device, 0x17e264, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
+}
+
+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,
+	.invalidate = gf100_ltc_invalidate,
+	.flush = gf100_ltc_flush,
+};
+
+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/gm200.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gm200.c
new file mode 100644
index 000000000..e18e0dc19
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gm200.c
@@ -0,0 +1,63 @@
+/*
+ * 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"
+
+#include <subdev/fb.h>
+#include <subdev/timer.h>
+
+static int
+gm200_ltc_oneinit(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+
+	ltc->ltc_nr = nvkm_rd32(device, 0x12006c);
+	ltc->lts_nr = nvkm_rd32(device, 0x17e280) >> 28;
+
+	return gf100_ltc_oneinit_tag_ram(ltc);
+}
+static void
+gm200_ltc_init(struct nvkm_ltc *ltc)
+{
+	nvkm_wr32(ltc->subdev.device, 0x17e278, ltc->tag_base);
+}
+
+static const struct nvkm_ltc_func
+gm200_ltc = {
+	.oneinit = gm200_ltc_oneinit,
+	.init = gm200_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,
+	.invalidate = gf100_ltc_invalidate,
+	.flush = gf100_ltc_flush,
+};
+
+int
+gm200_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
+{
+	return nvkm_ltc_new_(&gm200_ltc, device, index, pltc);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp100.c
new file mode 100644
index 000000000..e923ed76d
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp100.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2016 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
+ */
+#include "priv.h"
+
+void
+gp100_ltc_intr(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	u32 mask;
+
+	mask = nvkm_rd32(device, 0x0001c0);
+	while (mask) {
+		u32 s, c = __ffs(mask);
+		for (s = 0; s < ltc->lts_nr; s++)
+			gm107_ltc_intr_lts(ltc, c, s);
+		mask &= ~(1 << c);
+	}
+}
+
+int
+gp100_ltc_oneinit(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	ltc->ltc_nr = nvkm_rd32(device, 0x12006c);
+	ltc->lts_nr = nvkm_rd32(device, 0x17e280) >> 28;
+	/*XXX: tagram allocation - TBD */
+	return 0;
+}
+
+void
+gp100_ltc_init(struct nvkm_ltc *ltc)
+{
+	/*XXX: PMU LS call to setup tagram address */
+}
+
+static const struct nvkm_ltc_func
+gp100_ltc = {
+	.oneinit = gp100_ltc_oneinit,
+	.init = gp100_ltc_init,
+	.intr = gp100_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,
+	.invalidate = gf100_ltc_invalidate,
+	.flush = gf100_ltc_flush,
+};
+
+int
+gp100_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
+{
+	return nvkm_ltc_new_(&gp100_ltc, device, index, pltc);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp102.c
new file mode 100644
index 000000000..601747ada
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp102.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2018 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.
+ */
+#include "priv.h"
+
+void
+gp102_ltc_zbc_clear_stencil(struct nvkm_ltc *ltc, int i, const u32 stencil)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	nvkm_mask(device, 0x17e338, 0x0000000f, i);
+	nvkm_wr32(device, 0x17e204, stencil);
+}
+
+static const struct nvkm_ltc_func
+gp102_ltc = {
+	.oneinit = gp100_ltc_oneinit,
+	.init = gp100_ltc_init,
+	.intr = gp100_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,
+	.zbc_clear_stencil = gp102_ltc_zbc_clear_stencil,
+	.invalidate = gf100_ltc_invalidate,
+	.flush = gf100_ltc_flush,
+};
+
+int
+gp102_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
+{
+	return nvkm_ltc_new_(&gp102_ltc, device, index, pltc);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp10b.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp10b.c
new file mode 100644
index 000000000..c0063c7ca
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp10b.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2019 NVIDIA Corporation.
+ *
+ * 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: Thierry Reding
+ */
+
+#include "priv.h"
+
+static void
+gp10b_ltc_init(struct nvkm_ltc *ltc)
+{
+	struct nvkm_device *device = ltc->subdev.device;
+	struct iommu_fwspec *spec;
+
+	nvkm_wr32(device, 0x17e27c, ltc->ltc_nr);
+	nvkm_wr32(device, 0x17e000, ltc->ltc_nr);
+	nvkm_wr32(device, 0x100800, ltc->ltc_nr);
+
+	spec = dev_iommu_fwspec_get(device->dev);
+	if (spec) {
+		u32 sid = spec->ids[0] & 0xffff;
+
+		/* stream ID */
+		nvkm_wr32(device, 0x160000, sid << 2);
+	}
+}
+
+static const struct nvkm_ltc_func
+gp10b_ltc = {
+	.oneinit = gp100_ltc_oneinit,
+	.init = gp10b_ltc_init,
+	.intr = gp100_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,
+	.zbc_clear_stencil = gp102_ltc_zbc_clear_stencil,
+	.invalidate = gf100_ltc_invalidate,
+	.flush = gf100_ltc_flush,
+};
+
+int
+gp10b_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
+{
+	return nvkm_ltc_new_(&gp10b_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
new file mode 100644
index 000000000..eca5a711b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/priv.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: MIT */
+#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/enum.h>
+
+int nvkm_ltc_new_(const struct nvkm_ltc_func *, struct nvkm_device *,
+		  int index, struct nvkm_ltc **);
+
+struct nvkm_ltc_func {
+	int  (*oneinit)(struct nvkm_ltc *);
+	void (*init)(struct nvkm_ltc *);
+	void (*intr)(struct nvkm_ltc *);
+
+	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 *, int, const u32[4]);
+	void (*zbc_clear_depth)(struct nvkm_ltc *, int, const u32);
+	void (*zbc_clear_stencil)(struct nvkm_ltc *, int, const u32);
+
+	void (*invalidate)(struct nvkm_ltc *);
+	void (*flush)(struct nvkm_ltc *);
+};
+
+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);
+void gf100_ltc_invalidate(struct nvkm_ltc *);
+void gf100_ltc_flush(struct nvkm_ltc *);
+extern const struct nvkm_bitfield gf100_ltc_lts_intr_name[];
+
+void gm107_ltc_intr(struct nvkm_ltc *);
+void gm107_ltc_intr_lts(struct nvkm_ltc *, int ltc, int lts);
+void gm107_ltc_cbc_clear(struct nvkm_ltc *, u32, u32);
+void gm107_ltc_cbc_wait(struct nvkm_ltc *);
+void gm107_ltc_zbc_clear_color(struct nvkm_ltc *, int, const u32[4]);
+void gm107_ltc_zbc_clear_depth(struct nvkm_ltc *, int, const u32);
+
+int gp100_ltc_oneinit(struct nvkm_ltc *);
+void gp100_ltc_init(struct nvkm_ltc *);
+void gp100_ltc_intr(struct nvkm_ltc *);
+
+void gp102_ltc_zbc_clear_stencil(struct nvkm_ltc *, int, const u32);
+#endif