drm/nvc0: implement support for copy engines

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

drivers/gpu/drm/nouveau/Makefile

@@ -20,7 +20,7 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \
              nv40_graph.o nv50_graph.o nvc0_graph.o \
              nv40_grctx.o nv50_grctx.o nvc0_grctx.o \
              nv84_crypt.o \
-             nva3_copy.o \
+             nva3_copy.o nvc0_copy.o \
              nv04_instmem.o nv50_instmem.o nvc0_instmem.o \
              nv50_evo.o nv50_crtc.o nv50_dac.o nv50_sor.o \
              nv50_cursor.o nv50_display.o \

drivers/gpu/drm/nouveau/nouveau_drv.h

@@ -1143,6 +1143,7 @@ extern int  nv50_graph_isr_chid(struct drm_device *dev, u64 inst);
 
 /* nvc0_graph.c */
 extern int  nvc0_graph_create(struct drm_device *);
+extern int  nvc0_graph_isr_chid(struct drm_device *dev, u64 inst);
 
 /* nv84_crypt.c */
 extern int  nv84_crypt_create(struct drm_device *);

drivers/gpu/drm/nouveau/nouveau_state.c

@@ -609,6 +609,10 @@ nouveau_card_init(struct drm_device *dev)
 			break;
 		}
 		break;
+	case NV_C0:
+		nvc0_copy_create(dev, 0);
+		nvc0_copy_create(dev, 1);
+		break;
 	default:
 		break;
 	}

drivers/gpu/drm/nouveau/nvc0_copy.c

+/*
+ * Copyright 2011 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 <linux/firmware.h>
+#include "drmP.h"
+#include "nouveau_drv.h"
+#include "nouveau_util.h"
+#include "nouveau_vm.h"
+#include "nouveau_ramht.h"
+#include "nvc0_copy.fuc.h"
+
+struct nvc0_copy_engine {
+	struct nouveau_exec_engine base;
+	u32 irq;
+	u32 pmc;
+	u32 fuc;
+	u32 ctx;
+};
+
+static int
+nvc0_copy_context_new(struct nouveau_channel *chan, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(chan->dev, engine);
+	struct drm_device *dev = chan->dev;
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct nouveau_gpuobj *ramin = chan->ramin;
+	struct nouveau_gpuobj *ctx = NULL;
+	int ret;
+
+	ret = nouveau_gpuobj_new(dev, NULL, 256, 256,
+				 NVOBJ_FLAG_VM | NVOBJ_FLAG_VM_USER |
+				 NVOBJ_FLAG_ZERO_ALLOC, &ctx);
+	if (ret)
+		return ret;
+
+	nv_wo32(ramin, pcopy->ctx + 0, lower_32_bits(ctx->vinst));
+	nv_wo32(ramin, pcopy->ctx + 4, upper_32_bits(ctx->vinst));
+	dev_priv->engine.instmem.flush(dev);
+
+	chan->engctx[engine] = ctx;
+	return 0;
+}
+
+static int
+nvc0_copy_object_new(struct nouveau_channel *chan, int engine,
+		     u32 handle, u16 class)
+{
+	return 0;
+}
+
+static void
+nvc0_copy_context_del(struct nouveau_channel *chan, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(chan->dev, engine);
+	struct nouveau_gpuobj *ctx = chan->engctx[engine];
+	struct drm_device *dev = chan->dev;
+	u32 inst;
+
+	inst  = (chan->ramin->vinst >> 12);
+	inst |= 0x40000000;
+
+	/* disable fifo access */
+	nv_wr32(dev, pcopy->fuc + 0x048, 0x00000000);
+	/* mark channel as unloaded if it's currently active */
+	if (nv_rd32(dev, pcopy->fuc + 0x050) == inst)
+		nv_mask(dev, pcopy->fuc + 0x050, 0x40000000, 0x00000000);
+	/* mark next channel as invalid if it's about to be loaded */
+	if (nv_rd32(dev, pcopy->fuc + 0x054) == inst)
+		nv_mask(dev, pcopy->fuc + 0x054, 0x40000000, 0x00000000);
+	/* restore fifo access */
+	nv_wr32(dev, pcopy->fuc + 0x048, 0x00000003);
+
+	nv_wo32(chan->ramin, pcopy->ctx + 0, 0x00000000);
+	nv_wo32(chan->ramin, pcopy->ctx + 4, 0x00000000);
+	nouveau_gpuobj_ref(NULL, &ctx);
+
+	chan->engctx[engine] = ctx;
+}
+
+static int
+nvc0_copy_init(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(dev, engine);
+	int i;
+
+	nv_mask(dev, 0x000200, pcopy->pmc, 0x00000000);
+	nv_mask(dev, 0x000200, pcopy->pmc, pcopy->pmc);
+	nv_wr32(dev, pcopy->fuc + 0x014, 0xffffffff);
+
+	nv_wr32(dev, pcopy->fuc + 0x1c0, 0x01000000);
+	for (i = 0; i < sizeof(nvc0_pcopy_data) / 4; i++)
+		nv_wr32(dev, pcopy->fuc + 0x1c4, nvc0_pcopy_data[i]);
+
+	nv_wr32(dev, pcopy->fuc + 0x180, 0x01000000);
+	for (i = 0; i < sizeof(nvc0_pcopy_code) / 4; i++) {
+		if ((i & 0x3f) == 0)
+			nv_wr32(dev, pcopy->fuc + 0x188, i >> 6);
+		nv_wr32(dev, pcopy->fuc + 0x184, nvc0_pcopy_code[i]);
+	}
+
+	nv_wr32(dev, pcopy->fuc + 0x084, engine - NVOBJ_ENGINE_COPY0);
+	nv_wr32(dev, pcopy->fuc + 0x10c, 0x00000000);
+	nv_wr32(dev, pcopy->fuc + 0x104, 0x00000000); /* ENTRY */
+	nv_wr32(dev, pcopy->fuc + 0x100, 0x00000002); /* TRIGGER */
+	return 0;
+}
+
+static int
+nvc0_copy_fini(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(dev, engine);
+
+	nv_mask(dev, pcopy->fuc + 0x048, 0x00000003, 0x00000000);
+
+	/* trigger fuc context unload */
+	nv_wait(dev, pcopy->fuc + 0x008, 0x0000000c, 0x00000000);
+	nv_mask(dev, pcopy->fuc + 0x054, 0x40000000, 0x00000000);
+	nv_wr32(dev, pcopy->fuc + 0x000, 0x00000008);
+	nv_wait(dev, pcopy->fuc + 0x008, 0x00000008, 0x00000000);
+
+	nv_wr32(dev, pcopy->fuc + 0x014, 0xffffffff);
+	return 0;
+}
+
+static struct nouveau_enum nvc0_copy_isr_error_name[] = {
+	{ 0x0001, "ILLEGAL_MTHD" },
+	{ 0x0002, "INVALID_ENUM" },
+	{ 0x0003, "INVALID_BITFIELD" },
+	{}
+};
+
+static void
+nvc0_copy_isr(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(dev, engine);
+	u32 disp = nv_rd32(dev, pcopy->fuc + 0x01c);
+	u32 stat = nv_rd32(dev, pcopy->fuc + 0x008) & disp & ~(disp >> 16);
+	u64 inst = (u64)(nv_rd32(dev, pcopy->fuc + 0x050) & 0x0fffffff) << 12;
+	u32 chid = nvc0_graph_isr_chid(dev, inst);
+	u32 ssta = nv_rd32(dev, pcopy->fuc + 0x040) & 0x0000ffff;
+	u32 addr = nv_rd32(dev, pcopy->fuc + 0x040) >> 16;
+	u32 mthd = (addr & 0x07ff) << 2;
+	u32 subc = (addr & 0x3800) >> 11;
+	u32 data = nv_rd32(dev, pcopy->fuc + 0x044);
+
+	if (stat & 0x00000040) {
+		NV_INFO(dev, "PCOPY: DISPATCH_ERROR [");
+		nouveau_enum_print(nvc0_copy_isr_error_name, ssta);
+		printk("] ch %d [0x%010llx] subc %d mthd 0x%04x data 0x%08x\n",
+			chid, inst, subc, mthd, data);
+		nv_wr32(dev, pcopy->fuc + 0x004, 0x00000040);
+		stat &= ~0x00000040;
+	}
+
+	if (stat) {
+		NV_INFO(dev, "PCOPY: unhandled intr 0x%08x\n", stat);
+		nv_wr32(dev, pcopy->fuc + 0x004, stat);
+	}
+}
+
+static void
+nvc0_copy_isr_0(struct drm_device *dev)
+{
+	nvc0_copy_isr(dev, NVOBJ_ENGINE_COPY0);
+}
+
+static void
+nvc0_copy_isr_1(struct drm_device *dev)
+{
+	nvc0_copy_isr(dev, NVOBJ_ENGINE_COPY1);
+}
+
+static void
+nvc0_copy_destroy(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy = nv_engine(dev, engine);
+
+	nouveau_irq_unregister(dev, pcopy->irq);
+
+	if (engine == NVOBJ_ENGINE_COPY0)
+		NVOBJ_ENGINE_DEL(dev, COPY0);
+	else
+		NVOBJ_ENGINE_DEL(dev, COPY1);
+	kfree(pcopy);
+}
+
+int
+nvc0_copy_create(struct drm_device *dev, int engine)
+{
+	struct nvc0_copy_engine *pcopy;
+
+	pcopy = kzalloc(sizeof(*pcopy), GFP_KERNEL);
+	if (!pcopy)
+		return -ENOMEM;
+
+	pcopy->base.destroy = nvc0_copy_destroy;
+	pcopy->base.init = nvc0_copy_init;
+	pcopy->base.fini = nvc0_copy_fini;
+	pcopy->base.context_new = nvc0_copy_context_new;
+	pcopy->base.context_del = nvc0_copy_context_del;
+	pcopy->base.object_new = nvc0_copy_object_new;
+
+	if (engine == 0) {
+		pcopy->irq = 5;
+		pcopy->pmc = 0x00000040;
+		pcopy->fuc = 0x104000;
+		pcopy->ctx = 0x0230;
+		nouveau_irq_register(dev, pcopy->irq, nvc0_copy_isr_0);
+		NVOBJ_ENGINE_ADD(dev, COPY0, &pcopy->base);
+		NVOBJ_CLASS(dev, 0x90b5, COPY0);
+	} else {
+		pcopy->irq = 6;
+		pcopy->pmc = 0x00000080;
+		pcopy->fuc = 0x105000;
+		pcopy->ctx = 0x0240;
+		nouveau_irq_register(dev, pcopy->irq, nvc0_copy_isr_1);
+		NVOBJ_ENGINE_ADD(dev, COPY1, &pcopy->base);
+		NVOBJ_CLASS(dev, 0x90b8, COPY1);
+	}
+
+	return 0;
+}

drivers/gpu/drm/nouveau/nvc0_copy.fuc.h

+uint32_t nvc0_pcopy_data[] = {
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00010000,
+	0x00000000,
+	0x00000000,
+	0x00010040,
+	0x0001019f,
+	0x00000000,
+	0x00010050,
+	0x000101a1,
+	0x00000000,
+	0x00070080,
+	0x0000001c,
+	0xfffff000,
+	0x00000020,
+	0xfff80000,
+	0x00000024,
+	0xffffe000,
+	0x00000028,
+	0xfffff800,
+	0x0000002c,
+	0xfffff000,
+	0x00000030,
+	0xfff80000,
+	0x00000034,
+	0xffffe000,
+	0x00070088,
+	0x00000048,
+	0xfffff000,
+	0x0000004c,
+	0xfff80000,
+	0x00000050,
+	0xffffe000,
+	0x00000054,
+	0xfffff800,
+	0x00000058,
+	0xfffff000,
+	0x0000005c,
+	0xfff80000,
+	0x00000060,
+	0xffffe000,
+	0x000200c0,
+	0x000104b8,
+	0x00000000,
+	0x00010541,
+	0x00000000,
+	0x000e00c3,
+	0x00000010,
+	0xffffff00,
+	0x00000014,
+	0x0000000f,
+	0x0000003c,
+	0xffffff00,
+	0x00000040,
+	0x0000000f,
+	0x00000018,
+	0xfff80000,
+	0x00000044,
+	0xfff80000,
+	0x00000074,
+	0xffff0000,
+	0x00000078,
+	0xffffe000,
+	0x00000068,
+	0xfccc0000,
+	0x0000006c,
+	0x00000000,
+	0x00000070,
+	0x00000000,
+	0x00000004,
+	0xffffff00,
+	0x00000008,
+	0x00000000,
+	0x0000000c,
+	0x00000000,
+	0x00000800,
+};
+
+uint32_t nvc0_pcopy_code[] = {
+	0x04fe04bd,
+	0x3517f000,
+	0xf10010fe,
+	0xf1040017,
+	0xf0fff327,
+	0x22d00023,
+	0x0c25f0c0,
+	0xf40012d0,
+	0x17f11031,
+	0x27f01200,
+	0x0012d003,
+	0xf40031f4,
+	0x0ef40028,
+	0x8001cffd,
+	0xf40812c4,
+	0x21f4060b,
+	0x0412c4ca,
+	0xf5070bf4,
+	0xc4010221,
+	0x01d00c11,
+	0xf101f840,
+	0xfe770047,
+	0x47f1004b,
+	0x44cf2100,
+	0x0144f000,
+	0xb60444b6,
+	0xf7f13040,
+	0xf4b6061c,
+	0x1457f106,
+	0x00f5d101,
+	0xb6043594,
+	0x57fe0250,
+	0x0145fe00,
+	0x010052b7,
+	0x00ff67f1,
+	0x56fd60bd,
+	0x0253f004,
+	0xf80545fa,
+	0x0053f003,
+	0xd100e7f0,
+	0x549800fe,
+	0x0845b600,
+	0xb6015698,
+	0x46fd1864,
+	0x0047fe05,
+	0xf00204b9,
+	0x01f40643,
+	0x0604fa09,
+	0xfa060ef4,
+	0x03f80504,
+	0x27f100f8,
+	0x23cf1400,
+	0x1e3fc800,
+	0xf4170bf4,
+	0x21f40132,
+	0x1e3af053,
+	0xf00023d0,
+	0x24d00147,
+	0xcf00f880,
+	0x3dc84023,
+	0x090bf41e,
+	0xf40131f4,
+	0x37f05321,
+	0x8023d002,
+	0x37f100f8,
+	0x32cf1900,
+	0x0033cf40,
+	0x07ff24e4,
+	0xf11024b6,
+	0xbd010057,
+	0x5874bd64,
+	0x57580056,
+	0x0450b601,
+	0xf40446b8,
+	0x76bb4d08,
+	0x0447b800,
+	0xbb0f08f4,
+	0x74b60276,
+	0x0057bb03,
+	0xbbdf0ef4,
+	0x44b60246,
+	0x0045bb03,
+	0xfd014598,
+	0x54b00453,
+	0x201bf400,
+	0x58004558,
+	0x64b00146,
+	0x091bf400,
+	0xf4005380,
+	0x32f4300e,
+	0xf455f901,
+	0x0ef40c01,
+	0x0225f025,
+	0xf10125f0,
+	0xd0100047,
+	0x43d00042,
+	0x4027f040,
+	0xcf0002d0,
+	0x24f08002,
+	0x0024b040,
+	0xf1f71bf4,
+	0xf01d0027,
+	0x23d00137,
+	0xf800f800,
+	0x0027f100,
+	0xf034bd22,
+	0x23d00233,
+	0xf400f800,
+	0x01b0f030,
+	0x0101b000,
+	0xb00201b0,
+	0x04980301,
+	0x3045c71a,
+	0xc70150b6,
+	0x60b63446,
+	0x3847c701,
+	0xf40170b6,
+	0x84bd0232,
+	0x4ac494bd,
+	0x0445b60f,
+	0xa430b4bd,
+	0x0f18f404,
+	0xbbc0a5ff,
+	0x31f400cb,
+	0x220ef402,
+	0xf00c1bf4,
+	0xcbbb10c7,
+	0x160ef400,
+	0xf406a430,
+	0xc7f00c18,
+	0x00cbbb14,
+	0xf1070ef4,
+	0x380080c7,
+	0x80b601c8,
+	0x01b0b601,
+	0xf404b5b8,
+	0x90b6c308,
+	0x0497b801,
+	0xfdb208f4,
+	0x06800065,
+	0x1d08980e,
+	0xf40068fd,
+	0x64bd0502,
+	0x800075fd,
+	0x78fd1907,
+	0x1057f100,
+	0x0654b608,
+	0xd00056d0,
+	0x50b74057,
+	0x06980800,
+	0x0162b619,
+	0x980864b6,
+	0x72b60e07,
+	0x0567fd01,
+	0xb70056d0,
+	0xb4010050,
+	0x56d00060,
+	0x0160b400,
+	0xb44056d0,
+	0x56d00260,
+	0x0360b480,
+	0xb7c056d0,
+	0x98040050,
+	0x56d01b06,
+	0x1c069800,
+	0xf44056d0,
+	0x00f81030,
+	0xc7075798,
+	0x78c76879,
+	0x0380b664,
+	0xb06077c7,
+	0x1bf40e76,
+	0x0477f009,
+	0xf00f0ef4,
+	0x70b6027c,
+	0x0947fd11,
+	0x980677f0,
+	0x5b980c5a,
+	0x00abfd0e,
+	0xbb01b7f0,
+	0xb2b604b7,
+	0xc4abff01,
+	0x9805a7bb,
+	0xe7f00d5d,
+	0x04e8bb01,
+	0xff01e2b6,
+	0xd8bbb4de,
+	0x01e0b605,
+	0xbb0cef94,
+	0xfefd02eb,
+	0x026cf005,
+	0x020860b7,
+	0xd00864b6,
+	0xb7bb006f,
+	0x00cbbb04,
+	0x98085f98,
+	0xfbfd0e5b,
+	0x01b7f000,
+	0xb604b7bb,
+	0xfbbb01b2,
+	0x05f7bb00,
+	0x5f98f0f9,
+	0x01b7f009,
+	0xb604b8bb,
+	0xfbbb01b2,
+	0x05f8bb00,
+	0x78bbf0f9,
+	0x0282b600,
+	0xbb01b7f0,
+	0xb9bb04b8,
+	0x0b589804,
+	0xbb01e7f0,
+	0xe2b604e9,
+	0xf48eff01,
+	0xbb04f7bb,
+	0x79bb00cf,
+	0x0589bb00,
+	0x90fcf0fc,
+	0xbb00d9fd,
+	0x89fd00ad,
+	0x008ffd00,
+	0xbb00a8bb,
+	0x92b604a7,
+	0x0497bb01,
+	0x988069d0,
+	0x58980557,
+	0x00acbb04,
+	0xb6007abb,
+	0x84b60081,
+	0x058bfd10,
+	0x060062b7,
+	0xb70067d0,
+	0xd0040060,
+	0x00f80068,
+	0xb7026cf0,
+	0xb6020260,
+	0x57980864,
+	0x0067d005,
+	0x040060b7,
+	0xb6045798,
+	0x67d01074,
+	0x0060b700,
+	0x06579804,
+	0xf80067d0,
+	0xf900f900,
+	0x0007f110,
+	0x0604b608,
+	0xf00001cf,
+	0x1bf40114,
+	0xfc10fcfa,
+	0xc800f800,
+	0x1bf40d34,
+	0xd121f570,
+	0x0c47f103,
+	0x0644b608,
+	0xb6020598,
+	0x45d00450,
+	0x4040d000,
+	0xd00c57f0,
+	0x40b78045,
+	0x05980400,
+	0x1054b601,
+	0xb70045d0,
+	0xf1050040,
+	0xf00b0057,
+	0x45d00153,
+	0x4057f100,
+	0x0154b640,
+	0x808053f1,
+	0xf14045d0,
+	0xf1111057,
+	0xd0131253,
+	0x57f18045,
+	0x53f11514,
+	0x45d01716,
+	0x0157f1c0,
+	0x0153f026,
+	0x080047f1,
+	0xd00644b6,
+	0x21f50045,
+	0x47f103d1,
+	0x44b6080c,
+	0x02059806,
+	0xd00045d0,
+	0x57f04040,
+	0x8045d004,
+	0x040040b7,
+	0xb6010598,
+	0x45d01054,
+	0x0040b700,
+	0x0057f105,
+	0x0045d003,
+	0x111057f1,
+	0x131253f1,
+	0x984045d0,
+	0x40b70305,
+	0x45d00500,
+	0x0157f100,
+	0x0153f026,
+	0x080047f1,
+	0xd00644b6,
+	0x00f80045,
+	0x03d121f5,
+	0xf4003fc8,
+	0x21f50e0b,
+	0x47f101af,
+	0x0ef40200,
+	0x1067f11e,
+	0x0664b608,
+	0x800177f0,
+	0x07800e07,
+	0x1d079819,
+	0xd00067d0,
+	0x44bd4067,
+	0xbd0232f4,
+	0x043fc854,
+	0xf50a0bf4,
+	0xf403a821,
+	0x21f50a0e,
+	0x49f0029c,
+	0x0231f407,
+	0xc82c57f0,
+	0x0bf4083f,
+	0xa821f50a,
+	0x0a0ef403,
+	0x029c21f5,
+	0xf10849f0,
+	0xb6080057,
+	0x06980654,
+	0x4056d01e,
+	0xf14167f0,
+	0xfd440063,
+	0x54d00546,
+	0x0c3fc800,
+	0xf5070bf4,
+	0xf803eb21,
+	0x0027f100,
+	0xf034bd22,
+	0x23d00133,
+	0x0000f800,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+};

drivers/gpu/drm/nouveau/nvc0_graph.c

@@ -531,7 +531,7 @@ nvc0_graph_init(struct drm_device *dev, int engine)
 	return 0;
 }
 
-static int
+int
 nvc0_graph_isr_chid(struct drm_device *dev, u64 inst)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;