Adding upstream version 5.10.209.upstream/5.10.209

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

1 files changed, 796 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv50.c
new file mode 100644
index 000000000..df16ffda1
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv50.c
@@ -0,0 +1,796 @@
+/*
+ * 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 "nv50.h"
+
+#include <core/client.h>
+#include <core/gpuobj.h>
+#include <engine/fifo.h>
+
+#include <nvif/class.h>
+
+u64
+nv50_gr_units(struct nvkm_gr *gr)
+{
+	return nvkm_rd32(gr->engine.subdev.device, 0x1540);
+}
+
+/*******************************************************************************
+ * Graphics object classes
+ ******************************************************************************/
+
+static int
+nv50_gr_object_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
+		    int align, struct nvkm_gpuobj **pgpuobj)
+{
+	int ret = nvkm_gpuobj_new(object->engine->subdev.device, 16,
+				  align, false, parent, pgpuobj);
+	if (ret == 0) {
+		nvkm_kmap(*pgpuobj);
+		nvkm_wo32(*pgpuobj, 0x00, object->oclass);
+		nvkm_wo32(*pgpuobj, 0x04, 0x00000000);
+		nvkm_wo32(*pgpuobj, 0x08, 0x00000000);
+		nvkm_wo32(*pgpuobj, 0x0c, 0x00000000);
+		nvkm_done(*pgpuobj);
+	}
+	return ret;
+}
+
+const struct nvkm_object_func
+nv50_gr_object = {
+	.bind = nv50_gr_object_bind,
+};
+
+/*******************************************************************************
+ * PGRAPH context
+ ******************************************************************************/
+
+static int
+nv50_gr_chan_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
+		  int align, struct nvkm_gpuobj **pgpuobj)
+{
+	struct nv50_gr *gr = nv50_gr_chan(object)->gr;
+	int ret = nvkm_gpuobj_new(gr->base.engine.subdev.device, gr->size,
+				  align, true, parent, pgpuobj);
+	if (ret == 0) {
+		nvkm_kmap(*pgpuobj);
+		nv50_grctx_fill(gr->base.engine.subdev.device, *pgpuobj);
+		nvkm_done(*pgpuobj);
+	}
+	return ret;
+}
+
+static const struct nvkm_object_func
+nv50_gr_chan = {
+	.bind = nv50_gr_chan_bind,
+};
+
+int
+nv50_gr_chan_new(struct nvkm_gr *base, struct nvkm_fifo_chan *fifoch,
+		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
+{
+	struct nv50_gr *gr = nv50_gr(base);
+	struct nv50_gr_chan *chan;
+
+	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_object_ctor(&nv50_gr_chan, oclass, &chan->object);
+	chan->gr = gr;
+	*pobject = &chan->object;
+	return 0;
+}
+
+/*******************************************************************************
+ * PGRAPH engine/subdev functions
+ ******************************************************************************/
+
+static const struct nvkm_bitfield nv50_mp_exec_errors[] = {
+	{ 0x01, "STACK_UNDERFLOW" },
+	{ 0x02, "STACK_MISMATCH" },
+	{ 0x04, "QUADON_ACTIVE" },
+	{ 0x08, "TIMEOUT" },
+	{ 0x10, "INVALID_OPCODE" },
+	{ 0x20, "PM_OVERFLOW" },
+	{ 0x40, "BREAKPOINT" },
+	{}
+};
+
+static const struct nvkm_bitfield nv50_mpc_traps[] = {
+	{ 0x0000001, "LOCAL_LIMIT_READ" },
+	{ 0x0000010, "LOCAL_LIMIT_WRITE" },
+	{ 0x0000040, "STACK_LIMIT" },
+	{ 0x0000100, "GLOBAL_LIMIT_READ" },
+	{ 0x0001000, "GLOBAL_LIMIT_WRITE" },
+	{ 0x0010000, "MP0" },
+	{ 0x0020000, "MP1" },
+	{ 0x0040000, "GLOBAL_LIMIT_RED" },
+	{ 0x0400000, "GLOBAL_LIMIT_ATOM" },
+	{ 0x4000000, "MP2" },
+	{}
+};
+
+static const struct nvkm_bitfield nv50_tex_traps[] = {
+	{ 0x00000001, "" }, /* any bit set? */
+	{ 0x00000002, "FAULT" },
+	{ 0x00000004, "STORAGE_TYPE_MISMATCH" },
+	{ 0x00000008, "LINEAR_MISMATCH" },
+	{ 0x00000020, "WRONG_MEMTYPE" },
+	{}
+};
+
+static const struct nvkm_bitfield nv50_gr_trap_m2mf[] = {
+	{ 0x00000001, "NOTIFY" },
+	{ 0x00000002, "IN" },
+	{ 0x00000004, "OUT" },
+	{}
+};
+
+static const struct nvkm_bitfield nv50_gr_trap_vfetch[] = {
+	{ 0x00000001, "FAULT" },
+	{}
+};
+
+static const struct nvkm_bitfield nv50_gr_trap_strmout[] = {
+	{ 0x00000001, "FAULT" },
+	{}
+};
+
+static const struct nvkm_bitfield nv50_gr_trap_ccache[] = {
+	{ 0x00000001, "FAULT" },
+	{}
+};
+
+/* There must be a *lot* of these. Will take some time to gather them up. */
+const struct nvkm_enum nv50_data_error_names[] = {
+	{ 0x00000003, "INVALID_OPERATION", NULL },
+	{ 0x00000004, "INVALID_VALUE", NULL },
+	{ 0x00000005, "INVALID_ENUM", NULL },
+	{ 0x00000008, "INVALID_OBJECT", NULL },
+	{ 0x00000009, "READ_ONLY_OBJECT", NULL },
+	{ 0x0000000a, "SUPERVISOR_OBJECT", NULL },
+	{ 0x0000000b, "INVALID_ADDRESS_ALIGNMENT", NULL },
+	{ 0x0000000c, "INVALID_BITFIELD", NULL },
+	{ 0x0000000d, "BEGIN_END_ACTIVE", NULL },
+	{ 0x0000000e, "SEMANTIC_COLOR_BACK_OVER_LIMIT", NULL },
+	{ 0x0000000f, "VIEWPORT_ID_NEEDS_GP", NULL },
+	{ 0x00000010, "RT_DOUBLE_BIND", NULL },
+	{ 0x00000011, "RT_TYPES_MISMATCH", NULL },
+	{ 0x00000012, "RT_LINEAR_WITH_ZETA", NULL },
+	{ 0x00000015, "FP_TOO_FEW_REGS", NULL },
+	{ 0x00000016, "ZETA_FORMAT_CSAA_MISMATCH", NULL },
+	{ 0x00000017, "RT_LINEAR_WITH_MSAA", NULL },
+	{ 0x00000018, "FP_INTERPOLANT_START_OVER_LIMIT", NULL },
+	{ 0x00000019, "SEMANTIC_LAYER_OVER_LIMIT", NULL },
+	{ 0x0000001a, "RT_INVALID_ALIGNMENT", NULL },
+	{ 0x0000001b, "SAMPLER_OVER_LIMIT", NULL },
+	{ 0x0000001c, "TEXTURE_OVER_LIMIT", NULL },
+	{ 0x0000001e, "GP_TOO_MANY_OUTPUTS", NULL },
+	{ 0x0000001f, "RT_BPP128_WITH_MS8", NULL },
+	{ 0x00000021, "Z_OUT_OF_BOUNDS", NULL },
+	{ 0x00000023, "XY_OUT_OF_BOUNDS", NULL },
+	{ 0x00000024, "VP_ZERO_INPUTS", NULL },
+	{ 0x00000027, "CP_MORE_PARAMS_THAN_SHARED", NULL },
+	{ 0x00000028, "CP_NO_REG_SPACE_STRIPED", NULL },
+	{ 0x00000029, "CP_NO_REG_SPACE_PACKED", NULL },
+	{ 0x0000002a, "CP_NOT_ENOUGH_WARPS", NULL },
+	{ 0x0000002b, "CP_BLOCK_SIZE_MISMATCH", NULL },
+	{ 0x0000002c, "CP_NOT_ENOUGH_LOCAL_WARPS", NULL },
+	{ 0x0000002d, "CP_NOT_ENOUGH_STACK_WARPS", NULL },
+	{ 0x0000002e, "CP_NO_BLOCKDIM_LATCH", NULL },
+	{ 0x00000031, "ENG2D_FORMAT_MISMATCH", NULL },
+	{ 0x0000003f, "PRIMITIVE_ID_NEEDS_GP", NULL },
+	{ 0x00000044, "SEMANTIC_VIEWPORT_OVER_LIMIT", NULL },
+	{ 0x00000045, "SEMANTIC_COLOR_FRONT_OVER_LIMIT", NULL },
+	{ 0x00000046, "LAYER_ID_NEEDS_GP", NULL },
+	{ 0x00000047, "SEMANTIC_CLIP_OVER_LIMIT", NULL },
+	{ 0x00000048, "SEMANTIC_PTSZ_OVER_LIMIT", NULL },
+	{}
+};
+
+static const struct nvkm_bitfield nv50_gr_intr_name[] = {
+	{ 0x00000001, "NOTIFY" },
+	{ 0x00000002, "COMPUTE_QUERY" },
+	{ 0x00000010, "ILLEGAL_MTHD" },
+	{ 0x00000020, "ILLEGAL_CLASS" },
+	{ 0x00000040, "DOUBLE_NOTIFY" },
+	{ 0x00001000, "CONTEXT_SWITCH" },
+	{ 0x00010000, "BUFFER_NOTIFY" },
+	{ 0x00100000, "DATA_ERROR" },
+	{ 0x00200000, "TRAP" },
+	{ 0x01000000, "SINGLE_STEP" },
+	{}
+};
+
+static const struct nvkm_bitfield nv50_gr_trap_prop[] = {
+	{ 0x00000004, "SURF_WIDTH_OVERRUN" },
+	{ 0x00000008, "SURF_HEIGHT_OVERRUN" },
+	{ 0x00000010, "DST2D_FAULT" },
+	{ 0x00000020, "ZETA_FAULT" },
+	{ 0x00000040, "RT_FAULT" },
+	{ 0x00000080, "CUDA_FAULT" },
+	{ 0x00000100, "DST2D_STORAGE_TYPE_MISMATCH" },
+	{ 0x00000200, "ZETA_STORAGE_TYPE_MISMATCH" },
+	{ 0x00000400, "RT_STORAGE_TYPE_MISMATCH" },
+	{ 0x00000800, "DST2D_LINEAR_MISMATCH" },
+	{ 0x00001000, "RT_LINEAR_MISMATCH" },
+	{}
+};
+
+static void
+nv50_gr_prop_trap(struct nv50_gr *gr, u32 ustatus_addr, u32 ustatus, u32 tp)
+{
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 e0c = nvkm_rd32(device, ustatus_addr + 0x04);
+	u32 e10 = nvkm_rd32(device, ustatus_addr + 0x08);
+	u32 e14 = nvkm_rd32(device, ustatus_addr + 0x0c);
+	u32 e18 = nvkm_rd32(device, ustatus_addr + 0x10);
+	u32 e1c = nvkm_rd32(device, ustatus_addr + 0x14);
+	u32 e20 = nvkm_rd32(device, ustatus_addr + 0x18);
+	u32 e24 = nvkm_rd32(device, ustatus_addr + 0x1c);
+	char msg[128];
+
+	/* CUDA memory: l[], g[] or stack. */
+	if (ustatus & 0x00000080) {
+		if (e18 & 0x80000000) {
+			/* g[] read fault? */
+			nvkm_error(subdev, "TRAP_PROP - TP %d - CUDA_FAULT - Global read fault at address %02x%08x\n",
+					 tp, e14, e10 | ((e18 >> 24) & 0x1f));
+			e18 &= ~0x1f000000;
+		} else if (e18 & 0xc) {
+			/* g[] write fault? */
+			nvkm_error(subdev, "TRAP_PROP - TP %d - CUDA_FAULT - Global write fault at address %02x%08x\n",
+				 tp, e14, e10 | ((e18 >> 7) & 0x1f));
+			e18 &= ~0x00000f80;
+		} else {
+			nvkm_error(subdev, "TRAP_PROP - TP %d - Unknown CUDA fault at address %02x%08x\n",
+				 tp, e14, e10);
+		}
+		ustatus &= ~0x00000080;
+	}
+	if (ustatus) {
+		nvkm_snprintbf(msg, sizeof(msg), nv50_gr_trap_prop, ustatus);
+		nvkm_error(subdev, "TRAP_PROP - TP %d - %08x [%s] - "
+				   "Address %02x%08x\n",
+			   tp, ustatus, msg, e14, e10);
+	}
+	nvkm_error(subdev, "TRAP_PROP - TP %d - e0c: %08x, e18: %08x, e1c: %08x, e20: %08x, e24: %08x\n",
+		 tp, e0c, e18, e1c, e20, e24);
+}
+
+static void
+nv50_gr_mp_trap(struct nv50_gr *gr, int tpid, int display)
+{
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 units = nvkm_rd32(device, 0x1540);
+	u32 addr, mp10, status, pc, oplow, ophigh;
+	char msg[128];
+	int i;
+	int mps = 0;
+	for (i = 0; i < 4; i++) {
+		if (!(units & 1 << (i+24)))
+			continue;
+		if (device->chipset < 0xa0)
+			addr = 0x408200 + (tpid << 12) + (i << 7);
+		else
+			addr = 0x408100 + (tpid << 11) + (i << 7);
+		mp10 = nvkm_rd32(device, addr + 0x10);
+		status = nvkm_rd32(device, addr + 0x14);
+		if (!status)
+			continue;
+		if (display) {
+			nvkm_rd32(device, addr + 0x20);
+			pc = nvkm_rd32(device, addr + 0x24);
+			oplow = nvkm_rd32(device, addr + 0x70);
+			ophigh = nvkm_rd32(device, addr + 0x74);
+			nvkm_snprintbf(msg, sizeof(msg),
+				       nv50_mp_exec_errors, status);
+			nvkm_error(subdev, "TRAP_MP_EXEC - TP %d MP %d: "
+					   "%08x [%s] at %06x warp %d, "
+					   "opcode %08x %08x\n",
+				   tpid, i, status, msg, pc & 0xffffff,
+				   pc >> 24, oplow, ophigh);
+		}
+		nvkm_wr32(device, addr + 0x10, mp10);
+		nvkm_wr32(device, addr + 0x14, 0);
+		mps++;
+	}
+	if (!mps && display)
+		nvkm_error(subdev, "TRAP_MP_EXEC - TP %d: "
+				"No MPs claiming errors?\n", tpid);
+}
+
+static void
+nv50_gr_tp_trap(struct nv50_gr *gr, int type, u32 ustatus_old,
+		  u32 ustatus_new, int display, const char *name)
+{
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 units = nvkm_rd32(device, 0x1540);
+	int tps = 0;
+	int i, r;
+	char msg[128];
+	u32 ustatus_addr, ustatus;
+	for (i = 0; i < 16; i++) {
+		if (!(units & (1 << i)))
+			continue;
+		if (device->chipset < 0xa0)
+			ustatus_addr = ustatus_old + (i << 12);
+		else
+			ustatus_addr = ustatus_new + (i << 11);
+		ustatus = nvkm_rd32(device, ustatus_addr) & 0x7fffffff;
+		if (!ustatus)
+			continue;
+		tps++;
+		switch (type) {
+		case 6: /* texture error... unknown for now */
+			if (display) {
+				nvkm_error(subdev, "magic set %d:\n", i);
+				for (r = ustatus_addr + 4; r <= ustatus_addr + 0x10; r += 4)
+					nvkm_error(subdev, "\t%08x: %08x\n", r,
+						   nvkm_rd32(device, r));
+				if (ustatus) {
+					nvkm_snprintbf(msg, sizeof(msg),
+						       nv50_tex_traps, ustatus);
+					nvkm_error(subdev,
+						   "%s - TP%d: %08x [%s]\n",
+						   name, i, ustatus, msg);
+					ustatus = 0;
+				}
+			}
+			break;
+		case 7: /* MP error */
+			if (ustatus & 0x04030000) {
+				nv50_gr_mp_trap(gr, i, display);
+				ustatus &= ~0x04030000;
+			}
+			if (ustatus && display) {
+				nvkm_snprintbf(msg, sizeof(msg),
+					       nv50_mpc_traps, ustatus);
+				nvkm_error(subdev, "%s - TP%d: %08x [%s]\n",
+					   name, i, ustatus, msg);
+				ustatus = 0;
+			}
+			break;
+		case 8: /* PROP error */
+			if (display)
+				nv50_gr_prop_trap(
+						gr, ustatus_addr, ustatus, i);
+			ustatus = 0;
+			break;
+		}
+		if (ustatus) {
+			if (display)
+				nvkm_error(subdev, "%s - TP%d: Unhandled ustatus %08x\n", name, i, ustatus);
+		}
+		nvkm_wr32(device, ustatus_addr, 0xc0000000);
+	}
+
+	if (!tps && display)
+		nvkm_warn(subdev, "%s - No TPs claiming errors?\n", name);
+}
+
+static int
+nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
+		     int chid, u64 inst, const char *name)
+{
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 status = nvkm_rd32(device, 0x400108);
+	u32 ustatus;
+	char msg[128];
+
+	if (!status && display) {
+		nvkm_error(subdev, "TRAP: no units reporting traps?\n");
+		return 1;
+	}
+
+	/* DISPATCH: Relays commands to other units and handles NOTIFY,
+	 * COND, QUERY. If you get a trap from it, the command is still stuck
+	 * in DISPATCH and you need to do something about it. */
+	if (status & 0x001) {
+		ustatus = nvkm_rd32(device, 0x400804) & 0x7fffffff;
+		if (!ustatus && display) {
+			nvkm_error(subdev, "TRAP_DISPATCH - no ustatus?\n");
+		}
+
+		nvkm_wr32(device, 0x400500, 0x00000000);
+
+		/* Known to be triggered by screwed up NOTIFY and COND... */
+		if (ustatus & 0x00000001) {
+			u32 addr = nvkm_rd32(device, 0x400808);
+			u32 subc = (addr & 0x00070000) >> 16;
+			u32 mthd = (addr & 0x00001ffc);
+			u32 datal = nvkm_rd32(device, 0x40080c);
+			u32 datah = nvkm_rd32(device, 0x400810);
+			u32 class = nvkm_rd32(device, 0x400814);
+			u32 r848 = nvkm_rd32(device, 0x400848);
+
+			nvkm_error(subdev, "TRAP DISPATCH_FAULT\n");
+			if (display && (addr & 0x80000000)) {
+				nvkm_error(subdev,
+					   "ch %d [%010llx %s] subc %d "
+					   "class %04x mthd %04x data %08x%08x "
+					   "400808 %08x 400848 %08x\n",
+					   chid, inst, name, subc, class, mthd,
+					   datah, datal, addr, r848);
+			} else
+			if (display) {
+				nvkm_error(subdev, "no stuck command?\n");
+			}
+
+			nvkm_wr32(device, 0x400808, 0);
+			nvkm_wr32(device, 0x4008e8, nvkm_rd32(device, 0x4008e8) & 3);
+			nvkm_wr32(device, 0x400848, 0);
+			ustatus &= ~0x00000001;
+		}
+
+		if (ustatus & 0x00000002) {
+			u32 addr = nvkm_rd32(device, 0x40084c);
+			u32 subc = (addr & 0x00070000) >> 16;
+			u32 mthd = (addr & 0x00001ffc);
+			u32 data = nvkm_rd32(device, 0x40085c);
+			u32 class = nvkm_rd32(device, 0x400814);
+
+			nvkm_error(subdev, "TRAP DISPATCH_QUERY\n");
+			if (display && (addr & 0x80000000)) {
+				nvkm_error(subdev,
+					   "ch %d [%010llx %s] subc %d "
+					   "class %04x mthd %04x data %08x "
+					   "40084c %08x\n", chid, inst, name,
+					   subc, class, mthd, data, addr);
+			} else
+			if (display) {
+				nvkm_error(subdev, "no stuck command?\n");
+			}
+
+			nvkm_wr32(device, 0x40084c, 0);
+			ustatus &= ~0x00000002;
+		}
+
+		if (ustatus && display) {
+			nvkm_error(subdev, "TRAP_DISPATCH "
+					   "(unknown %08x)\n", ustatus);
+		}
+
+		nvkm_wr32(device, 0x400804, 0xc0000000);
+		nvkm_wr32(device, 0x400108, 0x001);
+		status &= ~0x001;
+		if (!status)
+			return 0;
+	}
+
+	/* M2MF: Memory to memory copy engine. */
+	if (status & 0x002) {
+		u32 ustatus = nvkm_rd32(device, 0x406800) & 0x7fffffff;
+		if (display) {
+			nvkm_snprintbf(msg, sizeof(msg),
+				       nv50_gr_trap_m2mf, ustatus);
+			nvkm_error(subdev, "TRAP_M2MF %08x [%s]\n",
+				   ustatus, msg);
+			nvkm_error(subdev, "TRAP_M2MF %08x %08x %08x %08x\n",
+				   nvkm_rd32(device, 0x406804),
+				   nvkm_rd32(device, 0x406808),
+				   nvkm_rd32(device, 0x40680c),
+				   nvkm_rd32(device, 0x406810));
+		}
+
+		/* No sane way found yet -- just reset the bugger. */
+		nvkm_wr32(device, 0x400040, 2);
+		nvkm_wr32(device, 0x400040, 0);
+		nvkm_wr32(device, 0x406800, 0xc0000000);
+		nvkm_wr32(device, 0x400108, 0x002);
+		status &= ~0x002;
+	}
+
+	/* VFETCH: Fetches data from vertex buffers. */
+	if (status & 0x004) {
+		u32 ustatus = nvkm_rd32(device, 0x400c04) & 0x7fffffff;
+		if (display) {
+			nvkm_snprintbf(msg, sizeof(msg),
+				       nv50_gr_trap_vfetch, ustatus);
+			nvkm_error(subdev, "TRAP_VFETCH %08x [%s]\n",
+				   ustatus, msg);
+			nvkm_error(subdev, "TRAP_VFETCH %08x %08x %08x %08x\n",
+				   nvkm_rd32(device, 0x400c00),
+				   nvkm_rd32(device, 0x400c08),
+				   nvkm_rd32(device, 0x400c0c),
+				   nvkm_rd32(device, 0x400c10));
+		}
+
+		nvkm_wr32(device, 0x400c04, 0xc0000000);
+		nvkm_wr32(device, 0x400108, 0x004);
+		status &= ~0x004;
+	}
+
+	/* STRMOUT: DirectX streamout / OpenGL transform feedback. */
+	if (status & 0x008) {
+		ustatus = nvkm_rd32(device, 0x401800) & 0x7fffffff;
+		if (display) {
+			nvkm_snprintbf(msg, sizeof(msg),
+				       nv50_gr_trap_strmout, ustatus);
+			nvkm_error(subdev, "TRAP_STRMOUT %08x [%s]\n",
+				   ustatus, msg);
+			nvkm_error(subdev, "TRAP_STRMOUT %08x %08x %08x %08x\n",
+				   nvkm_rd32(device, 0x401804),
+				   nvkm_rd32(device, 0x401808),
+				   nvkm_rd32(device, 0x40180c),
+				   nvkm_rd32(device, 0x401810));
+		}
+
+		/* No sane way found yet -- just reset the bugger. */
+		nvkm_wr32(device, 0x400040, 0x80);
+		nvkm_wr32(device, 0x400040, 0);
+		nvkm_wr32(device, 0x401800, 0xc0000000);
+		nvkm_wr32(device, 0x400108, 0x008);
+		status &= ~0x008;
+	}
+
+	/* CCACHE: Handles code and c[] caches and fills them. */
+	if (status & 0x010) {
+		ustatus = nvkm_rd32(device, 0x405018) & 0x7fffffff;
+		if (display) {
+			nvkm_snprintbf(msg, sizeof(msg),
+				       nv50_gr_trap_ccache, ustatus);
+			nvkm_error(subdev, "TRAP_CCACHE %08x [%s]\n",
+				   ustatus, msg);
+			nvkm_error(subdev, "TRAP_CCACHE %08x %08x %08x %08x "
+					   "%08x %08x %08x\n",
+				   nvkm_rd32(device, 0x405000),
+				   nvkm_rd32(device, 0x405004),
+				   nvkm_rd32(device, 0x405008),
+				   nvkm_rd32(device, 0x40500c),
+				   nvkm_rd32(device, 0x405010),
+				   nvkm_rd32(device, 0x405014),
+				   nvkm_rd32(device, 0x40501c));
+		}
+
+		nvkm_wr32(device, 0x405018, 0xc0000000);
+		nvkm_wr32(device, 0x400108, 0x010);
+		status &= ~0x010;
+	}
+
+	/* Unknown, not seen yet... 0x402000 is the only trap status reg
+	 * remaining, so try to handle it anyway. Perhaps related to that
+	 * unknown DMA slot on tesla? */
+	if (status & 0x20) {
+		ustatus = nvkm_rd32(device, 0x402000) & 0x7fffffff;
+		if (display)
+			nvkm_error(subdev, "TRAP_UNKC04 %08x\n", ustatus);
+		nvkm_wr32(device, 0x402000, 0xc0000000);
+		/* no status modifiction on purpose */
+	}
+
+	/* TEXTURE: CUDA texturing units */
+	if (status & 0x040) {
+		nv50_gr_tp_trap(gr, 6, 0x408900, 0x408600, display,
+				    "TRAP_TEXTURE");
+		nvkm_wr32(device, 0x400108, 0x040);
+		status &= ~0x040;
+	}
+
+	/* MP: CUDA execution engines. */
+	if (status & 0x080) {
+		nv50_gr_tp_trap(gr, 7, 0x408314, 0x40831c, display,
+				    "TRAP_MP");
+		nvkm_wr32(device, 0x400108, 0x080);
+		status &= ~0x080;
+	}
+
+	/* PROP:  Handles TP-initiated uncached memory accesses:
+	 * l[], g[], stack, 2d surfaces, render targets. */
+	if (status & 0x100) {
+		nv50_gr_tp_trap(gr, 8, 0x408e08, 0x408708, display,
+				    "TRAP_PROP");
+		nvkm_wr32(device, 0x400108, 0x100);
+		status &= ~0x100;
+	}
+
+	if (status) {
+		if (display)
+			nvkm_error(subdev, "TRAP: unknown %08x\n", status);
+		nvkm_wr32(device, 0x400108, status);
+	}
+
+	return 1;
+}
+
+void
+nv50_gr_intr(struct nvkm_gr *base)
+{
+	struct nv50_gr *gr = nv50_gr(base);
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	struct nvkm_fifo_chan *chan;
+	u32 stat = nvkm_rd32(device, 0x400100);
+	u32 inst = nvkm_rd32(device, 0x40032c) & 0x0fffffff;
+	u32 addr = nvkm_rd32(device, 0x400704);
+	u32 subc = (addr & 0x00070000) >> 16;
+	u32 mthd = (addr & 0x00001ffc);
+	u32 data = nvkm_rd32(device, 0x400708);
+	u32 class = nvkm_rd32(device, 0x400814);
+	u32 show = stat, show_bitfield = stat;
+	const struct nvkm_enum *en;
+	unsigned long flags;
+	const char *name = "unknown";
+	char msg[128];
+	int chid = -1;
+
+	chan = nvkm_fifo_chan_inst(device->fifo, (u64)inst << 12, &flags);
+	if (chan)  {
+		name = chan->object.client->name;
+		chid = chan->chid;
+	}
+
+	if (show & 0x00100000) {
+		u32 ecode = nvkm_rd32(device, 0x400110);
+		en = nvkm_enum_find(nv50_data_error_names, ecode);
+		nvkm_error(subdev, "DATA_ERROR %08x [%s]\n",
+			   ecode, en ? en->name : "");
+		show_bitfield &= ~0x00100000;
+	}
+
+	if (stat & 0x00200000) {
+		if (!nv50_gr_trap_handler(gr, show, chid, (u64)inst << 12, name))
+			show &= ~0x00200000;
+		show_bitfield &= ~0x00200000;
+	}
+
+	nvkm_wr32(device, 0x400100, stat);
+	nvkm_wr32(device, 0x400500, 0x00010001);
+
+	if (show) {
+		show &= show_bitfield;
+		nvkm_snprintbf(msg, sizeof(msg), nv50_gr_intr_name, show);
+		nvkm_error(subdev, "%08x [%s] ch %d [%010llx %s] subc %d "
+				   "class %04x mthd %04x data %08x\n",
+			   stat, msg, chid, (u64)inst << 12, name,
+			   subc, class, mthd, data);
+	}
+
+	if (nvkm_rd32(device, 0x400824) & (1 << 31))
+		nvkm_wr32(device, 0x400824, nvkm_rd32(device, 0x400824) & ~(1 << 31));
+
+	nvkm_fifo_chan_put(device->fifo, flags, &chan);
+}
+
+int
+nv50_gr_init(struct nvkm_gr *base)
+{
+	struct nv50_gr *gr = nv50_gr(base);
+	struct nvkm_device *device = gr->base.engine.subdev.device;
+	int ret, units, i;
+
+	/* NV_PGRAPH_DEBUG_3_HW_CTX_SWITCH_ENABLED */
+	nvkm_wr32(device, 0x40008c, 0x00000004);
+
+	/* reset/enable traps and interrupts */
+	nvkm_wr32(device, 0x400804, 0xc0000000);
+	nvkm_wr32(device, 0x406800, 0xc0000000);
+	nvkm_wr32(device, 0x400c04, 0xc0000000);
+	nvkm_wr32(device, 0x401800, 0xc0000000);
+	nvkm_wr32(device, 0x405018, 0xc0000000);
+	nvkm_wr32(device, 0x402000, 0xc0000000);
+
+	units = nvkm_rd32(device, 0x001540);
+	for (i = 0; i < 16; i++) {
+		if (!(units & (1 << i)))
+			continue;
+
+		if (device->chipset < 0xa0) {
+			nvkm_wr32(device, 0x408900 + (i << 12), 0xc0000000);
+			nvkm_wr32(device, 0x408e08 + (i << 12), 0xc0000000);
+			nvkm_wr32(device, 0x408314 + (i << 12), 0xc0000000);
+		} else {
+			nvkm_wr32(device, 0x408600 + (i << 11), 0xc0000000);
+			nvkm_wr32(device, 0x408708 + (i << 11), 0xc0000000);
+			nvkm_wr32(device, 0x40831c + (i << 11), 0xc0000000);
+		}
+	}
+
+	nvkm_wr32(device, 0x400108, 0xffffffff);
+	nvkm_wr32(device, 0x400138, 0xffffffff);
+	nvkm_wr32(device, 0x400100, 0xffffffff);
+	nvkm_wr32(device, 0x40013c, 0xffffffff);
+	nvkm_wr32(device, 0x400500, 0x00010001);
+
+	/* upload context program, initialise ctxctl defaults */
+	ret = nv50_grctx_init(device, &gr->size);
+	if (ret)
+		return ret;
+
+	nvkm_wr32(device, 0x400824, 0x00000000);
+	nvkm_wr32(device, 0x400828, 0x00000000);
+	nvkm_wr32(device, 0x40082c, 0x00000000);
+	nvkm_wr32(device, 0x400830, 0x00000000);
+	nvkm_wr32(device, 0x40032c, 0x00000000);
+	nvkm_wr32(device, 0x400330, 0x00000000);
+
+	/* some unknown zcull magic */
+	switch (device->chipset & 0xf0) {
+	case 0x50:
+	case 0x80:
+	case 0x90:
+		nvkm_wr32(device, 0x402ca8, 0x00000800);
+		break;
+	case 0xa0:
+	default:
+		if (device->chipset == 0xa0 ||
+		    device->chipset == 0xaa ||
+		    device->chipset == 0xac) {
+			nvkm_wr32(device, 0x402ca8, 0x00000802);
+		} else {
+			nvkm_wr32(device, 0x402cc0, 0x00000000);
+			nvkm_wr32(device, 0x402ca8, 0x00000002);
+		}
+
+		break;
+	}
+
+	/* zero out zcull regions */
+	for (i = 0; i < 8; i++) {
+		nvkm_wr32(device, 0x402c20 + (i * 0x10), 0x00000000);
+		nvkm_wr32(device, 0x402c24 + (i * 0x10), 0x00000000);
+		nvkm_wr32(device, 0x402c28 + (i * 0x10), 0x00000000);
+		nvkm_wr32(device, 0x402c2c + (i * 0x10), 0x00000000);
+	}
+
+	return 0;
+}
+
+int
+nv50_gr_new_(const struct nvkm_gr_func *func, struct nvkm_device *device,
+	     int index, struct nvkm_gr **pgr)
+{
+	struct nv50_gr *gr;
+
+	if (!(gr = kzalloc(sizeof(*gr), GFP_KERNEL)))
+		return -ENOMEM;
+	spin_lock_init(&gr->lock);
+	*pgr = &gr->base;
+
+	return nvkm_gr_ctor(func, device, index, true, &gr->base);
+}
+
+static const struct nvkm_gr_func
+nv50_gr = {
+	.init = nv50_gr_init,
+	.intr = nv50_gr_intr,
+	.chan_new = nv50_gr_chan_new,
+	.units = nv50_gr_units,
+	.sclass = {
+		{ -1, -1, NV_NULL_CLASS, &nv50_gr_object },
+		{ -1, -1, NV50_TWOD, &nv50_gr_object },
+		{ -1, -1, NV50_MEMORY_TO_MEMORY_FORMAT, &nv50_gr_object },
+		{ -1, -1, NV50_TESLA, &nv50_gr_object },
+		{ -1, -1, NV50_COMPUTE, &nv50_gr_object },
+		{}
+	}
+};
+
+int
+nv50_gr_new(struct nvkm_device *device, int index, struct nvkm_gr **pgr)
+{
+	return nv50_gr_new_(&nv50_gr, device, index, pgr);
+}