From: Ben Skeggs <bskeggs@redhat.com>
Date: Thu, 20 Aug 2015 04:54:13 +0000 (+1000)
Subject: drm/nouveau/gr: switch to subdev printk macros
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=109c2f2f1c42c16a4b265e796dee6ae4ada78417;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

drm/nouveau/gr: switch to subdev printk macros

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

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/enum.h b/drivers/gpu/drm/nouveau/include/nvkm/core/enum.h
index 573b1eef4b39..a5d4c65bbbc2 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/enum.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/core/enum.h
@@ -17,6 +17,5 @@ struct nvkm_bitfield {
 	const char *name;
 };
 
-void nvkm_bitfield_print(const struct nvkm_bitfield *, u32 value);
 void nvkm_snprintbf(char *, int, const struct nvkm_bitfield *, u32 value);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/enum.c b/drivers/gpu/drm/nouveau/nvkm/core/enum.c
index 2cfaec406194..64bdbd04a73a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/enum.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/enum.c
@@ -49,22 +49,6 @@ nvkm_enum_print(const struct nvkm_enum *en, u32 value)
 	return en;
 }
 
-void
-nvkm_bitfield_print(const struct nvkm_bitfield *bf, u32 value)
-{
-	while (bf->name) {
-		if (value & bf->mask) {
-			pr_cont(" %s", bf->name);
-			value &= ~bf->mask;
-		}
-
-		bf++;
-	}
-
-	if (value)
-		pr_cont(" (unknown bits 0x%08x)", value);
-}
-
 void
 nvkm_snprintbf(char *data, int size, const struct nvkm_bitfield *bf, u32 value)
 {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c
index ccce293191a4..7854baff3374 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c
@@ -1271,7 +1271,8 @@ int
 gf100_grctx_generate(struct gf100_gr *gr)
 {
 	struct gf100_grctx_oclass *oclass = (void *)nv_engine(gr)->cclass;
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	struct nvkm_bar *bar = device->bar;
 	struct nvkm_gpuobj *chan;
 	struct gf100_grctx info;
@@ -1283,7 +1284,7 @@ gf100_grctx_generate(struct gf100_gr *gr)
 	ret = nvkm_gpuobj_new(nv_object(gr), NULL, 0x80000 + gr->size,
 			      0x1000, NVOBJ_FLAG_ZERO_ALLOC, &chan);
 	if (ret) {
-		nv_error(gr, "failed to allocate channel memory, %d\n", ret);
+		nvkm_error(subdev, "failed to allocate chan memory, %d\n", ret);
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
index 4bfec3aa0dee..a27daf986ed7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
@@ -673,7 +673,8 @@ gf100_gr_zbc_init(struct gf100_gr *gr)
 int
 gf100_gr_wait_idle(struct gf100_gr *gr)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	unsigned long end_jiffies = jiffies + msecs_to_jiffies(2000);
 	bool gr_enabled, ctxsw_active, gr_busy;
 
@@ -692,8 +693,9 @@ gf100_gr_wait_idle(struct gf100_gr *gr)
 			return 0;
 	} while (time_before(jiffies, end_jiffies));
 
-	nv_error(gr, "wait for idle timeout (en: %d, ctxsw: %d, busy: %d)\n",
-		 gr_enabled, ctxsw_active, gr_busy);
+	nvkm_error(subdev,
+		   "wait for idle timeout (en: %d, ctxsw: %d, busy: %d)\n",
+		   gr_enabled, ctxsw_active, gr_busy);
 	return -EAGAIN;
 }
 
@@ -790,55 +792,50 @@ gf100_gr_units(struct nvkm_gr *obj)
 	return cfg;
 }
 
-static const struct nvkm_enum gk104_sked_error[] = {
-	{ 7, "CONSTANT_BUFFER_SIZE" },
-	{ 9, "LOCAL_MEMORY_SIZE_POS" },
-	{ 10, "LOCAL_MEMORY_SIZE_NEG" },
-	{ 11, "WARP_CSTACK_SIZE" },
-	{ 12, "TOTAL_TEMP_SIZE" },
-	{ 13, "REGISTER_COUNT" },
-	{ 18, "TOTAL_THREADS" },
-	{ 20, "PROGRAM_OFFSET" },
-	{ 21, "SHARED_MEMORY_SIZE" },
-	{ 25, "SHARED_CONFIG_TOO_SMALL" },
-	{ 26, "TOTAL_REGISTER_COUNT" },
+static const struct nvkm_bitfield gk104_sked_error[] = {
+	{ 0x00000080, "CONSTANT_BUFFER_SIZE" },
+	{ 0x00000200, "LOCAL_MEMORY_SIZE_POS" },
+	{ 0x00000400, "LOCAL_MEMORY_SIZE_NEG" },
+	{ 0x00000800, "WARP_CSTACK_SIZE" },
+	{ 0x00001000, "TOTAL_TEMP_SIZE" },
+	{ 0x00002000, "REGISTER_COUNT" },
+	{ 0x00040000, "TOTAL_THREADS" },
+	{ 0x00100000, "PROGRAM_OFFSET" },
+	{ 0x00200000, "SHARED_MEMORY_SIZE" },
+	{ 0x02000000, "SHARED_CONFIG_TOO_SMALL" },
+	{ 0x04000000, "TOTAL_REGISTER_COUNT" },
 	{}
 };
 
-static const struct nvkm_enum gf100_gpc_rop_error[] = {
-	{ 1, "RT_PITCH_OVERRUN" },
-	{ 4, "RT_WIDTH_OVERRUN" },
-	{ 5, "RT_HEIGHT_OVERRUN" },
-	{ 7, "ZETA_STORAGE_TYPE_MISMATCH" },
-	{ 8, "RT_STORAGE_TYPE_MISMATCH" },
-	{ 10, "RT_LINEAR_MISMATCH" },
+static const struct nvkm_bitfield gf100_gpc_rop_error[] = {
+	{ 0x00000002, "RT_PITCH_OVERRUN" },
+	{ 0x00000010, "RT_WIDTH_OVERRUN" },
+	{ 0x00000020, "RT_HEIGHT_OVERRUN" },
+	{ 0x00000080, "ZETA_STORAGE_TYPE_MISMATCH" },
+	{ 0x00000100, "RT_STORAGE_TYPE_MISMATCH" },
+	{ 0x00000400, "RT_LINEAR_MISMATCH" },
 	{}
 };
 
 static void
 gf100_gr_trap_gpc_rop(struct gf100_gr *gr, int gpc)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	char error[128];
 	u32 trap[4];
-	int i;
 
-	trap[0] = nvkm_rd32(device, GPC_UNIT(gpc, 0x0420));
+	trap[0] = nvkm_rd32(device, GPC_UNIT(gpc, 0x0420)) & 0x3fffffff;
 	trap[1] = nvkm_rd32(device, GPC_UNIT(gpc, 0x0434));
 	trap[2] = nvkm_rd32(device, GPC_UNIT(gpc, 0x0438));
 	trap[3] = nvkm_rd32(device, GPC_UNIT(gpc, 0x043c));
 
-	nv_error(gr, "GPC%d/PROP trap:", gpc);
-	for (i = 0; i <= 29; ++i) {
-		if (!(trap[0] & (1 << i)))
-			continue;
-		pr_cont(" ");
-		nvkm_enum_print(gf100_gpc_rop_error, i);
-	}
-	pr_cont("\n");
+	nvkm_snprintbf(error, sizeof(error), gf100_gpc_rop_error, trap[0]);
 
-	nv_error(gr, "x = %u, y = %u, format = %x, storage type = %x\n",
-		 trap[1] & 0xffff, trap[1] >> 16, (trap[2] >> 8) & 0x3f,
-		 trap[3] & 0xff);
+	nvkm_error(subdev, "GPC%d/PROP trap: %08x [%s] x = %u, y = %u, "
+			   "format = %x, storage type = %x\n",
+		   gpc, trap[0], error, trap[1] & 0xffff, trap[1] >> 16,
+		   (trap[2] >> 8) & 0x3f, trap[3] & 0xff);
 	nvkm_wr32(device, GPC_UNIT(gpc, 0x0420), 0xc0000000);
 }
 
@@ -864,17 +861,19 @@ static const struct nvkm_bitfield gf100_mp_global_error[] = {
 static void
 gf100_gr_trap_mp(struct gf100_gr *gr, int gpc, int tpc)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	u32 werr = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x648));
 	u32 gerr = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x650));
+	const struct nvkm_enum *warp;
+	char glob[128];
 
-	nv_error(gr, "GPC%i/TPC%i/MP trap:", gpc, tpc);
-	nvkm_bitfield_print(gf100_mp_global_error, gerr);
-	if (werr) {
-		pr_cont(" ");
-		nvkm_enum_print(gf100_mp_warp_error, werr & 0xffff);
-	}
-	pr_cont("\n");
+	nvkm_snprintbf(glob, sizeof(glob), gf100_mp_global_error, gerr);
+	warp = nvkm_enum_find(gf100_mp_warp_error, werr & 0xffff);
+
+	nvkm_error(subdev, "GPC%i/TPC%i/MP trap: "
+			   "global %08x [%s] warp %04x [%s]\n",
+		   gpc, tpc, gerr, glob, werr, warp ? warp->name : "");
 
 	nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x648), 0x00000000);
 	nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x650), gerr);
@@ -883,12 +882,13 @@ gf100_gr_trap_mp(struct gf100_gr *gr, int gpc, int tpc)
 static void
 gf100_gr_trap_tpc(struct gf100_gr *gr, int gpc, int tpc)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	u32 stat = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x0508));
 
 	if (stat & 0x00000001) {
 		u32 trap = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x0224));
-		nv_error(gr, "GPC%d/TPC%d/TEX: 0x%08x\n", gpc, tpc, trap);
+		nvkm_error(subdev, "GPC%d/TPC%d/TEX: %08x\n", gpc, tpc, trap);
 		nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x0224), 0xc0000000);
 		stat &= ~0x00000001;
 	}
@@ -900,27 +900,28 @@ gf100_gr_trap_tpc(struct gf100_gr *gr, int gpc, int tpc)
 
 	if (stat & 0x00000004) {
 		u32 trap = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x0084));
-		nv_error(gr, "GPC%d/TPC%d/POLY: 0x%08x\n", gpc, tpc, trap);
+		nvkm_error(subdev, "GPC%d/TPC%d/POLY: %08x\n", gpc, tpc, trap);
 		nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x0084), 0xc0000000);
 		stat &= ~0x00000004;
 	}
 
 	if (stat & 0x00000008) {
 		u32 trap = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x048c));
-		nv_error(gr, "GPC%d/TPC%d/L1C: 0x%08x\n", gpc, tpc, trap);
+		nvkm_error(subdev, "GPC%d/TPC%d/L1C: %08x\n", gpc, tpc, trap);
 		nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x048c), 0xc0000000);
 		stat &= ~0x00000008;
 	}
 
 	if (stat) {
-		nv_error(gr, "GPC%d/TPC%d/0x%08x: unknown\n", gpc, tpc, stat);
+		nvkm_error(subdev, "GPC%d/TPC%d/%08x: unknown\n", gpc, tpc, stat);
 	}
 }
 
 static void
 gf100_gr_trap_gpc(struct gf100_gr *gr, int gpc)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	u32 stat = nvkm_rd32(device, GPC_UNIT(gpc, 0x2c90));
 	int tpc;
 
@@ -931,21 +932,21 @@ gf100_gr_trap_gpc(struct gf100_gr *gr, int gpc)
 
 	if (stat & 0x00000002) {
 		u32 trap = nvkm_rd32(device, GPC_UNIT(gpc, 0x0900));
-		nv_error(gr, "GPC%d/ZCULL: 0x%08x\n", gpc, trap);
+		nvkm_error(subdev, "GPC%d/ZCULL: %08x\n", gpc, trap);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x0900), 0xc0000000);
 		stat &= ~0x00000002;
 	}
 
 	if (stat & 0x00000004) {
 		u32 trap = nvkm_rd32(device, GPC_UNIT(gpc, 0x1028));
-		nv_error(gr, "GPC%d/CCACHE: 0x%08x\n", gpc, trap);
+		nvkm_error(subdev, "GPC%d/CCACHE: %08x\n", gpc, trap);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x1028), 0xc0000000);
 		stat &= ~0x00000004;
 	}
 
 	if (stat & 0x00000008) {
 		u32 trap = nvkm_rd32(device, GPC_UNIT(gpc, 0x0824));
-		nv_error(gr, "GPC%d/ESETUP: 0x%08x\n", gpc, trap);
+		nvkm_error(subdev, "GPC%d/ESETUP: %08x\n", gpc, trap);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x0824), 0xc0000000);
 		stat &= ~0x00000009;
 	}
@@ -960,20 +961,21 @@ gf100_gr_trap_gpc(struct gf100_gr *gr, int gpc)
 	}
 
 	if (stat) {
-		nv_error(gr, "GPC%d/0x%08x: unknown\n", gpc, stat);
+		nvkm_error(subdev, "GPC%d/%08x: unknown\n", gpc, stat);
 	}
 }
 
 static void
 gf100_gr_trap_intr(struct gf100_gr *gr)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	u32 trap = nvkm_rd32(device, 0x400108);
-	int rop, gpc, i;
+	int rop, gpc;
 
 	if (trap & 0x00000001) {
 		u32 stat = nvkm_rd32(device, 0x404000);
-		nv_error(gr, "DISPATCH 0x%08x\n", stat);
+		nvkm_error(subdev, "DISPATCH %08x\n", stat);
 		nvkm_wr32(device, 0x404000, 0xc0000000);
 		nvkm_wr32(device, 0x400108, 0x00000001);
 		trap &= ~0x00000001;
@@ -981,7 +983,7 @@ gf100_gr_trap_intr(struct gf100_gr *gr)
 
 	if (trap & 0x00000002) {
 		u32 stat = nvkm_rd32(device, 0x404600);
-		nv_error(gr, "M2MF 0x%08x\n", stat);
+		nvkm_error(subdev, "M2MF %08x\n", stat);
 		nvkm_wr32(device, 0x404600, 0xc0000000);
 		nvkm_wr32(device, 0x400108, 0x00000002);
 		trap &= ~0x00000002;
@@ -989,7 +991,7 @@ gf100_gr_trap_intr(struct gf100_gr *gr)
 
 	if (trap & 0x00000008) {
 		u32 stat = nvkm_rd32(device, 0x408030);
-		nv_error(gr, "CCACHE 0x%08x\n", stat);
+		nvkm_error(subdev, "CCACHE %08x\n", stat);
 		nvkm_wr32(device, 0x408030, 0xc0000000);
 		nvkm_wr32(device, 0x400108, 0x00000008);
 		trap &= ~0x00000008;
@@ -997,7 +999,7 @@ gf100_gr_trap_intr(struct gf100_gr *gr)
 
 	if (trap & 0x00000010) {
 		u32 stat = nvkm_rd32(device, 0x405840);
-		nv_error(gr, "SHADER 0x%08x\n", stat);
+		nvkm_error(subdev, "SHADER %08x\n", stat);
 		nvkm_wr32(device, 0x405840, 0xc0000000);
 		nvkm_wr32(device, 0x400108, 0x00000010);
 		trap &= ~0x00000010;
@@ -1005,7 +1007,7 @@ gf100_gr_trap_intr(struct gf100_gr *gr)
 
 	if (trap & 0x00000040) {
 		u32 stat = nvkm_rd32(device, 0x40601c);
-		nv_error(gr, "UNK6 0x%08x\n", stat);
+		nvkm_error(subdev, "UNK6 %08x\n", stat);
 		nvkm_wr32(device, 0x40601c, 0xc0000000);
 		nvkm_wr32(device, 0x400108, 0x00000040);
 		trap &= ~0x00000040;
@@ -1013,25 +1015,20 @@ gf100_gr_trap_intr(struct gf100_gr *gr)
 
 	if (trap & 0x00000080) {
 		u32 stat = nvkm_rd32(device, 0x404490);
-		nv_error(gr, "MACRO 0x%08x\n", stat);
+		nvkm_error(subdev, "MACRO %08x\n", stat);
 		nvkm_wr32(device, 0x404490, 0xc0000000);
 		nvkm_wr32(device, 0x400108, 0x00000080);
 		trap &= ~0x00000080;
 	}
 
 	if (trap & 0x00000100) {
-		u32 stat = nvkm_rd32(device, 0x407020);
+		u32 stat = nvkm_rd32(device, 0x407020) & 0x3fffffff;
+		char sked[128];
 
-		nv_error(gr, "SKED:");
-		for (i = 0; i <= 29; ++i) {
-			if (!(stat & (1 << i)))
-				continue;
-			pr_cont(" ");
-			nvkm_enum_print(gk104_sked_error, i);
-		}
-		pr_cont("\n");
+		nvkm_snprintbf(sked, sizeof(sked), gk104_sked_error, stat);
+		nvkm_error(subdev, "SKED: %08x [%s]\n", stat, sked);
 
-		if (stat & 0x3fffffff)
+		if (stat)
 			nvkm_wr32(device, 0x407020, 0x40000000);
 		nvkm_wr32(device, 0x400108, 0x00000100);
 		trap &= ~0x00000100;
@@ -1055,7 +1052,7 @@ gf100_gr_trap_intr(struct gf100_gr *gr)
 		for (rop = 0; rop < gr->rop_nr; rop++) {
 			u32 statz = nvkm_rd32(device, ROP_UNIT(rop, 0x070));
 			u32 statc = nvkm_rd32(device, ROP_UNIT(rop, 0x144));
-			nv_error(gr, "ROP%d 0x%08x 0x%08x\n",
+			nvkm_error(subdev, "ROP%d %08x %08x\n",
 				 rop, statz, statc);
 			nvkm_wr32(device, ROP_UNIT(rop, 0x070), 0xc0000000);
 			nvkm_wr32(device, ROP_UNIT(rop, 0x144), 0xc0000000);
@@ -1065,7 +1062,7 @@ gf100_gr_trap_intr(struct gf100_gr *gr)
 	}
 
 	if (trap) {
-		nv_error(gr, "TRAP UNHANDLED 0x%08x\n", trap);
+		nvkm_error(subdev, "TRAP UNHANDLED %08x\n", trap);
 		nvkm_wr32(device, 0x400108, trap);
 	}
 }
@@ -1073,15 +1070,20 @@ gf100_gr_trap_intr(struct gf100_gr *gr)
 static void
 gf100_gr_ctxctl_debug_unit(struct gf100_gr *gr, u32 base)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
-	nv_error(gr, "%06x - done 0x%08x\n", base,
-		 nvkm_rd32(device, base + 0x400));
-	nv_error(gr, "%06x - stat 0x%08x 0x%08x 0x%08x 0x%08x\n", base,
-		 nvkm_rd32(device, base + 0x800), nvkm_rd32(device, base + 0x804),
-		 nvkm_rd32(device, base + 0x808), nvkm_rd32(device, base + 0x80c));
-	nv_error(gr, "%06x - stat 0x%08x 0x%08x 0x%08x 0x%08x\n", base,
-		 nvkm_rd32(device, base + 0x810), nvkm_rd32(device, base + 0x814),
-		 nvkm_rd32(device, base + 0x818), nvkm_rd32(device, base + 0x81c));
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	nvkm_error(subdev, "%06x - done %08x\n", base,
+		   nvkm_rd32(device, base + 0x400));
+	nvkm_error(subdev, "%06x - stat %08x %08x %08x %08x\n", base,
+		   nvkm_rd32(device, base + 0x800),
+		   nvkm_rd32(device, base + 0x804),
+		   nvkm_rd32(device, base + 0x808),
+		   nvkm_rd32(device, base + 0x80c));
+	nvkm_error(subdev, "%06x - stat %08x %08x %08x %08x\n", base,
+		   nvkm_rd32(device, base + 0x810),
+		   nvkm_rd32(device, base + 0x814),
+		   nvkm_rd32(device, base + 0x818),
+		   nvkm_rd32(device, base + 0x81c));
 }
 
 void
@@ -1099,7 +1101,8 @@ gf100_gr_ctxctl_debug(struct gf100_gr *gr)
 static void
 gf100_gr_ctxctl_isr(struct gf100_gr *gr)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	u32 stat = nvkm_rd32(device, 0x409c18);
 
 	if (stat & 0x00000001) {
@@ -1111,26 +1114,26 @@ gf100_gr_ctxctl_isr(struct gf100_gr *gr)
 			u32  mthd = (addr & 0x00003ffc);
 			u32  data = nvkm_rd32(device, 0x409810);
 
-			nv_error(gr, "FECS MTHD subc %d class 0x%04x "
-				       "mthd 0x%04x data 0x%08x\n",
-				 subc, class, mthd, data);
+			nvkm_error(subdev, "FECS MTHD subc %d class %04x "
+					   "mthd %04x data %08x\n",
+				   subc, class, mthd, data);
 
 			nvkm_wr32(device, 0x409c20, 0x00000001);
 			stat &= ~0x00000001;
 		} else {
-			nv_error(gr, "FECS ucode error %d\n", code);
+			nvkm_error(subdev, "FECS ucode error %d\n", code);
 		}
 	}
 
 	if (stat & 0x00080000) {
-		nv_error(gr, "FECS watchdog timeout\n");
+		nvkm_error(subdev, "FECS watchdog timeout\n");
 		gf100_gr_ctxctl_debug(gr);
 		nvkm_wr32(device, 0x409c20, 0x00080000);
 		stat &= ~0x00080000;
 	}
 
 	if (stat) {
-		nv_error(gr, "FECS 0x%08x\n", stat);
+		nvkm_error(subdev, "FECS %08x\n", stat);
 		gf100_gr_ctxctl_debug(gr);
 		nvkm_wr32(device, 0x409c20, stat);
 	}
@@ -1175,10 +1178,10 @@ gf100_gr_intr(struct nvkm_subdev *subdev)
 	if (stat & 0x00000010) {
 		handle = nvkm_handle_get_class(engctx, class);
 		if (!handle || nv_call(handle->object, mthd, data)) {
-			nv_error(gr,
-				 "ILLEGAL_MTHD ch %d [0x%010llx %s] subc %d class 0x%04x mthd 0x%04x data 0x%08x\n",
-				 chid, inst << 12, nvkm_client_name(engctx),
-				 subc, class, mthd, data);
+			nvkm_error(subdev, "ILLEGAL_MTHD ch %d [%010llx %s] "
+				   "subc %d class %04x mthd %04x data %08x\n",
+				   chid, inst << 12, nvkm_client_name(engctx),
+				   subc, class, mthd, data);
 		}
 		nvkm_handle_put(handle);
 		nvkm_wr32(device, 0x400100, 0x00000010);
@@ -1186,27 +1189,29 @@ gf100_gr_intr(struct nvkm_subdev *subdev)
 	}
 
 	if (stat & 0x00000020) {
-		nv_error(gr,
-			 "ILLEGAL_CLASS ch %d [0x%010llx %s] subc %d class 0x%04x mthd 0x%04x data 0x%08x\n",
-			 chid, inst << 12, nvkm_client_name(engctx), subc,
-			 class, mthd, data);
+		nvkm_error(subdev, "ILLEGAL_CLASS ch %d [%010llx %s] "
+			   "subc %d class %04x mthd %04x data %08x\n",
+			   chid, inst << 12, nvkm_client_name(engctx), subc,
+			   class, mthd, data);
 		nvkm_wr32(device, 0x400100, 0x00000020);
 		stat &= ~0x00000020;
 	}
 
 	if (stat & 0x00100000) {
-		nv_error(gr, "DATA_ERROR [");
-		nvkm_enum_print(nv50_data_error_names, code);
-		pr_cont("] ch %d [0x%010llx %s] subc %d class 0x%04x mthd 0x%04x data 0x%08x\n",
-			chid, inst << 12, nvkm_client_name(engctx), subc,
-			class, mthd, data);
+		const struct nvkm_enum *en =
+			nvkm_enum_find(nv50_data_error_names, code);
+		nvkm_error(subdev, "DATA_ERROR %08x [%s] ch %d [%010llx %s] "
+				   "subc %d class %04x mthd %04x data %08x\n",
+			   code, en ? en->name : "", chid, inst << 12,
+			   nvkm_client_name(engctx), subc, class, mthd, data);
 		nvkm_wr32(device, 0x400100, 0x00100000);
 		stat &= ~0x00100000;
 	}
 
 	if (stat & 0x00200000) {
-		nv_error(gr, "TRAP ch %d [0x%010llx %s]\n", chid, inst << 12,
-			 nvkm_client_name(engctx));
+		nvkm_error(subdev, "TRAP ch %d [%010llx %s]\n",
+			   chid, inst << 12,
+			   nvkm_client_name(engctx));
 		gf100_gr_trap_intr(gr);
 		nvkm_wr32(device, 0x400100, 0x00200000);
 		stat &= ~0x00200000;
@@ -1219,7 +1224,7 @@ gf100_gr_intr(struct nvkm_subdev *subdev)
 	}
 
 	if (stat) {
-		nv_error(gr, "unknown stat 0x%08x\n", stat);
+		nvkm_error(subdev, "intr %08x\n", stat);
 		nvkm_wr32(device, 0x400100, stat);
 	}
 
@@ -1295,7 +1300,8 @@ gf100_gr_init_csdata(struct gf100_gr *gr,
 int
 gf100_gr_init_ctxctl(struct gf100_gr *gr)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	struct gf100_gr_oclass *oclass = (void *)nv_object(gr)->oclass;
 	struct gf100_grctx_oclass *cclass = (void *)nv_engine(gr)->cclass;
 	int i;
@@ -1390,7 +1396,7 @@ gf100_gr_init_ctxctl(struct gf100_gr *gr)
 		if (gr->data == NULL) {
 			int ret = gf100_grctx_generate(gr);
 			if (ret) {
-				nv_error(gr, "failed to construct context\n");
+				nvkm_error(subdev, "failed to construct context\n");
 				return ret;
 			}
 		}
@@ -1448,7 +1454,7 @@ gf100_gr_init_ctxctl(struct gf100_gr *gr)
 	if (gr->data == NULL) {
 		int ret = gf100_grctx_generate(gr);
 		if (ret) {
-			nv_error(gr, "failed to construct context\n");
+			nvkm_error(subdev, "failed to construct context\n");
 			return ret;
 		}
 	}
@@ -1580,7 +1586,8 @@ int
 gf100_gr_ctor_fw(struct gf100_gr *gr, const char *fwname,
 		 struct gf100_gr_fuc *fuc)
 {
-	struct nvkm_device *device = nv_device(gr);
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	const struct firmware *fw;
 	char f[64];
 	char cname[16];
@@ -1599,7 +1606,7 @@ gf100_gr_ctor_fw(struct gf100_gr *gr, const char *fwname,
 	snprintf(f, sizeof(f), "nvidia/%s/%s.bin", cname, fwname);
 	ret = request_firmware(&fw, f, nv_device_base(device));
 	if (ret) {
-		nv_error(gr, "failed to load %s\n", fwname);
+		nvkm_error(subdev, "failed to load %s\n", fwname);
 		return ret;
 	}
 
@@ -1633,7 +1640,7 @@ gf100_gr_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 	      struct nvkm_object **pobject)
 {
 	struct gf100_gr_oclass *oclass = (void *)bclass;
-	struct nvkm_device *device = nv_device(parent);
+	struct nvkm_device *device = (void *)parent;
 	struct gf100_gr *gr;
 	bool use_ext_fw, enable;
 	int ret, i, j;
@@ -1653,7 +1660,7 @@ gf100_gr_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 	gr->base.units = gf100_gr_units;
 
 	if (use_ext_fw) {
-		nv_info(gr, "using external firmware\n");
+		nvkm_info(&gr->base.engine.subdev, "using external firmware\n");
 		if (gf100_gr_ctor_fw(gr, "fecs_inst", &gr->fuc409c) ||
 		    gf100_gr_ctor_fw(gr, "fecs_data", &gr->fuc409d) ||
 		    gf100_gr_ctor_fw(gr, "gpccs_inst", &gr->fuc41ac) ||
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk20a.c
index ed944aa6b81b..6cb8ff3fb68a 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk20a.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gk20a.c
@@ -220,13 +220,14 @@ gk20a_gr_dtor(struct nvkm_object *object)
 static int
 gk20a_gr_wait_mem_scrubbing(struct gf100_gr *gr)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 
 	if (nvkm_msec(device, 2000,
 		if (!(nvkm_rd32(device, 0x40910c) & 0x00000006))
 			break;
 	) < 0) {
-		nv_error(gr, "FECS mem scrubbing timeout\n");
+		nvkm_error(subdev, "FECS mem scrubbing timeout\n");
 		return -ETIMEDOUT;
 	}
 
@@ -234,7 +235,7 @@ gk20a_gr_wait_mem_scrubbing(struct gf100_gr *gr)
 		if (!(nvkm_rd32(device, 0x41a10c) & 0x00000006))
 			break;
 	) < 0) {
-		nv_error(gr, "GPCCS mem scrubbing timeout\n");
+		nvkm_error(subdev, "GPCCS mem scrubbing timeout\n");
 		return -ETIMEDOUT;
 	}
 
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv04.c
index 33f3b8219213..a445712973f6 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv04.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv04.c
@@ -1200,7 +1200,8 @@ bool
 nv04_gr_idle(void *obj)
 {
 	struct nvkm_gr *gr = nvkm_gr(obj);
-	struct nvkm_device *device = gr->engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	u32 mask = 0xffffffff;
 
 	if (nv_device(obj)->card_type == NV_40)
@@ -1210,8 +1211,8 @@ nv04_gr_idle(void *obj)
 		if (!(nvkm_rd32(device, NV04_PGRAPH_STATUS) & mask))
 			break;
 	) < 0) {
-		nv_error(gr, "idle timed out with status 0x%08x\n",
-			 nvkm_rd32(device, NV04_PGRAPH_STATUS));
+		nvkm_error(subdev, "idle timed out with status %08x\n",
+			   nvkm_rd32(device, NV04_PGRAPH_STATUS));
 		return false;
 	}
 
@@ -1276,6 +1277,7 @@ nv04_gr_intr(struct nvkm_subdev *subdev)
 	u32 class = nvkm_rd32(device, 0x400180 + subc * 4) & 0xff;
 	u32 inst = (nvkm_rd32(device, 0x40016c) & 0xffff) << 4;
 	u32 show = stat;
+	char msg[128], src[128], sta[128];
 	unsigned long flags;
 
 	spin_lock_irqsave(&gr->lock, flags);
@@ -1303,17 +1305,14 @@ nv04_gr_intr(struct nvkm_subdev *subdev)
 	nvkm_wr32(device, NV04_PGRAPH_FIFO, 0x00000001);
 
 	if (show) {
-		nv_error(gr, "%s", "");
-		nvkm_bitfield_print(nv04_gr_intr_name, show);
-		pr_cont(" nsource:");
-		nvkm_bitfield_print(nv04_gr_nsource, nsource);
-		pr_cont(" nstatus:");
-		nvkm_bitfield_print(nv04_gr_nstatus, nstatus);
-		pr_cont("\n");
-		nv_error(gr,
-			 "ch %d [%s] subc %d class 0x%04x mthd 0x%04x data 0x%08x\n",
-			 chid, nvkm_client_name(chan), subc, class, mthd,
-			 data);
+		nvkm_snprintbf(msg, sizeof(msg), nv04_gr_intr_name, show);
+		nvkm_snprintbf(src, sizeof(src), nv04_gr_nsource, nsource);
+		nvkm_snprintbf(sta, sizeof(sta), nv04_gr_nstatus, nstatus);
+		nvkm_error(subdev, "intr %08x [%s] nsource %08x [%s] "
+				   "nstatus %08x [%s] ch %d [%s] subc %d "
+				   "class %04x mthd %04x data %08x\n",
+			   show, msg, nsource, src, nstatus, sta, chid,
+			   nvkm_client_name(chan), subc, class, mthd, data);
 	}
 
 	nvkm_namedb_put(handle);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv10.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv10.c
index 6b3ee956ced4..94f7dc794d2f 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv10.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv10.c
@@ -690,6 +690,7 @@ static void
 nv10_gr_create_pipe(struct nv10_gr_chan *chan)
 {
 	struct nv10_gr *gr = nv10_gr(chan);
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
 	struct pipe_state *pipe_state = &chan->pipe_state;
 	u32 *pipe_state_addr;
 	int i;
@@ -702,7 +703,7 @@ nv10_gr_create_pipe(struct nv10_gr_chan *chan)
 		u32 *__end_addr = pipe_state->pipe_##addr + \
 				ARRAY_SIZE(pipe_state->pipe_##addr); \
 		if (pipe_state_addr != __end_addr) \
-			nv_error(gr, "incomplete pipe init for 0x%x :  %p/%p\n", \
+			nvkm_error(subdev, "incomplete pipe init for 0x%x :  %p/%p\n", \
 				addr, pipe_state_addr, __end_addr); \
 	} while (0)
 #define NV_WRITE_PIPE_INIT(value) *(pipe_state_addr++) = value
@@ -844,24 +845,26 @@ nv10_gr_create_pipe(struct nv10_gr_chan *chan)
 static int
 nv10_gr_ctx_regs_find_offset(struct nv10_gr *gr, int reg)
 {
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
 	int i;
 	for (i = 0; i < ARRAY_SIZE(nv10_gr_ctx_regs); i++) {
 		if (nv10_gr_ctx_regs[i] == reg)
 			return i;
 	}
-	nv_error(gr, "unknow offset nv10_ctx_regs %d\n", reg);
+	nvkm_error(subdev, "unknow offset nv10_ctx_regs %d\n", reg);
 	return -1;
 }
 
 static int
 nv17_gr_ctx_regs_find_offset(struct nv10_gr *gr, int reg)
 {
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
 	int i;
 	for (i = 0; i < ARRAY_SIZE(nv17_gr_ctx_regs); i++) {
 		if (nv17_gr_ctx_regs[i] == reg)
 			return i;
 	}
-	nv_error(gr, "unknow offset nv17_ctx_regs %d\n", reg);
+	nvkm_error(subdev, "unknow offset nv17_ctx_regs %d\n", reg);
 	return -1;
 }
 
@@ -1177,6 +1180,7 @@ nv10_gr_intr(struct nvkm_subdev *subdev)
 	u32 data = nvkm_rd32(device, NV04_PGRAPH_TRAPPED_DATA);
 	u32 class = nvkm_rd32(device, 0x400160 + subc * 4) & 0xfff;
 	u32 show = stat;
+	char msg[128], src[128], sta[128];
 	unsigned long flags;
 
 	spin_lock_irqsave(&gr->lock, flags);
@@ -1204,17 +1208,14 @@ nv10_gr_intr(struct nvkm_subdev *subdev)
 	nvkm_wr32(device, NV04_PGRAPH_FIFO, 0x00000001);
 
 	if (show) {
-		nv_error(gr, "%s", "");
-		nvkm_bitfield_print(nv10_gr_intr_name, show);
-		pr_cont(" nsource:");
-		nvkm_bitfield_print(nv04_gr_nsource, nsource);
-		pr_cont(" nstatus:");
-		nvkm_bitfield_print(nv10_gr_nstatus, nstatus);
-		pr_cont("\n");
-		nv_error(gr,
-			 "ch %d [%s] subc %d class 0x%04x mthd 0x%04x data 0x%08x\n",
-			 chid, nvkm_client_name(chan), subc, class, mthd,
-			 data);
+		nvkm_snprintbf(msg, sizeof(msg), nv10_gr_intr_name, show);
+		nvkm_snprintbf(src, sizeof(src), nv04_gr_nsource, nsource);
+		nvkm_snprintbf(sta, sizeof(sta), nv10_gr_nstatus, nstatus);
+		nvkm_error(subdev, "intr %08x [%s] nsource %08x [%s] "
+				   "nstatus %08x [%s] ch %d [%s] subc %d "
+				   "class %04x mthd %04x data %08x\n",
+			   show, msg, nsource, src, nstatus, sta, chid,
+			   nvkm_client_name(chan), subc, class, mthd, data);
 	}
 
 	nvkm_namedb_put(handle);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv20.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv20.c
index 21aff9b5ed40..dab64540e69f 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv20.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv20.c
@@ -207,6 +207,7 @@ nv20_gr_intr(struct nvkm_subdev *subdev)
 	u32 data = nvkm_rd32(device, NV04_PGRAPH_TRAPPED_DATA);
 	u32 class = nvkm_rd32(device, 0x400160 + subc * 4) & 0xfff;
 	u32 show = stat;
+	char msg[128], src[128], sta[128];
 
 	engctx = nvkm_engctx_get(engine, chid);
 	if (stat & NV_PGRAPH_INTR_ERROR) {
@@ -222,17 +223,14 @@ nv20_gr_intr(struct nvkm_subdev *subdev)
 	nvkm_wr32(device, NV04_PGRAPH_FIFO, 0x00000001);
 
 	if (show) {
-		nv_error(gr, "%s", "");
-		nvkm_bitfield_print(nv10_gr_intr_name, show);
-		pr_cont(" nsource:");
-		nvkm_bitfield_print(nv04_gr_nsource, nsource);
-		pr_cont(" nstatus:");
-		nvkm_bitfield_print(nv10_gr_nstatus, nstatus);
-		pr_cont("\n");
-		nv_error(gr,
-			 "ch %d [%s] subc %d class 0x%04x mthd 0x%04x data 0x%08x\n",
-			 chid, nvkm_client_name(engctx), subc, class, mthd,
-			 data);
+		nvkm_snprintbf(msg, sizeof(msg), nv10_gr_intr_name, show);
+		nvkm_snprintbf(src, sizeof(src), nv04_gr_nsource, nsource);
+		nvkm_snprintbf(sta, sizeof(sta), nv10_gr_nstatus, nstatus);
+		nvkm_error(subdev, "intr %08x [%s] nsource %08x [%s] "
+				   "nstatus %08x [%s] ch %d [%s] subc %d "
+				   "class %04x mthd %04x data %08x\n",
+			   show, msg, nsource, src, nstatus, sta, chid,
+			   nvkm_client_name(engctx), subc, class, mthd, data);
 	}
 
 	nvkm_engctx_put(engctx);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv40.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv40.c
index 7455049ff178..10ffb676e55e 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv40.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv40.c
@@ -155,7 +155,8 @@ nv40_gr_context_fini(struct nvkm_object *object, bool suspend)
 {
 	struct nv40_gr *gr = (void *)object->engine;
 	struct nv40_gr_chan *chan = (void *)object;
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	u32 inst = 0x01000000 | nv_gpuobj(chan)->addr >> 4;
 	int ret = 0;
 
@@ -172,7 +173,7 @@ nv40_gr_context_fini(struct nvkm_object *object, bool suspend)
 					break;
 			) < 0) {
 				u32 insn = nvkm_rd32(device, 0x400308);
-				nv_warn(gr, "ctxprog timeout 0x%08x\n", insn);
+				nvkm_warn(subdev, "ctxprog timeout %08x\n", insn);
 				ret = -EBUSY;
 			}
 		}
@@ -302,6 +303,7 @@ nv40_gr_intr(struct nvkm_subdev *subdev)
 	u32 data = nvkm_rd32(device, NV04_PGRAPH_TRAPPED_DATA);
 	u32 class = nvkm_rd32(device, 0x400160 + subc * 4) & 0xffff;
 	u32 show = stat;
+	char msg[128], src[128], sta[128];
 	int chid;
 
 	engctx = nvkm_engctx_get(engine, inst);
@@ -324,17 +326,15 @@ nv40_gr_intr(struct nvkm_subdev *subdev)
 	nvkm_wr32(device, NV04_PGRAPH_FIFO, 0x00000001);
 
 	if (show) {
-		nv_error(gr, "%s", "");
-		nvkm_bitfield_print(nv10_gr_intr_name, show);
-		pr_cont(" nsource:");
-		nvkm_bitfield_print(nv04_gr_nsource, nsource);
-		pr_cont(" nstatus:");
-		nvkm_bitfield_print(nv10_gr_nstatus, nstatus);
-		pr_cont("\n");
-		nv_error(gr,
-			 "ch %d [0x%08x %s] subc %d class 0x%04x mthd 0x%04x data 0x%08x\n",
-			 chid, inst << 4, nvkm_client_name(engctx), subc,
-			 class, mthd, data);
+		nvkm_snprintbf(msg, sizeof(msg), nv10_gr_intr_name, show);
+		nvkm_snprintbf(src, sizeof(src), nv04_gr_nsource, nsource);
+		nvkm_snprintbf(sta, sizeof(sta), nv10_gr_nstatus, nstatus);
+		nvkm_error(subdev, "intr %08x [%s] nsource %08x [%s] "
+				   "nstatus %08x [%s] ch %d [%08x %s] subc %d "
+				   "class %04x mthd %04x data %08x\n",
+			   show, msg, nsource, src, nstatus, sta, chid,
+			   inst << 4, nvkm_client_name(engctx), subc,
+			   class, mthd, data);
 	}
 
 	nvkm_engctx_put(engctx);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv50.c
index 3b482bcc22d0..4ea7f0938769 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/nv50.c
@@ -200,46 +200,71 @@ static const struct nvkm_bitfield nv50_gr_status[] = {
 	{}
 };
 
-static const char *const nv50_gr_vstatus_0[] = {
-	"VFETCH", "CCACHE", "PREGEOM", "POSTGEOM", "VATTR", "STRMOUT", "VCLIP",
-	NULL
+static const struct nvkm_bitfield
+nv50_gr_vstatus_0[] = {
+	{ 0x01, "VFETCH" },
+	{ 0x02, "CCACHE" },
+	{ 0x04, "PREGEOM" },
+	{ 0x08, "POSTGEOM" },
+	{ 0x10, "VATTR" },
+	{ 0x20, "STRMOUT" },
+	{ 0x40, "VCLIP" },
+	{}
 };
 
-static const char *const nv50_gr_vstatus_1[] = {
-	"TPC_RAST", "TPC_PROP", "TPC_TEX", "TPC_GEOM", "TPC_MP", NULL
+static const struct nvkm_bitfield
+nv50_gr_vstatus_1[] = {
+	{ 0x01, "TPC_RAST" },
+	{ 0x02, "TPC_PROP" },
+	{ 0x04, "TPC_TEX" },
+	{ 0x08, "TPC_GEOM" },
+	{ 0x10, "TPC_MP" },
+	{}
 };
 
-static const char *const nv50_gr_vstatus_2[] = {
-	"RATTR", "APLANE", "TRAST", "CLIPID", "ZCULL", "ENG2D", "RMASK",
-	"ROP", NULL
+static const struct nvkm_bitfield
+nv50_gr_vstatus_2[] = {
+	{ 0x01, "RATTR" },
+	{ 0x02, "APLANE" },
+	{ 0x04, "TRAST" },
+	{ 0x08, "CLIPID" },
+	{ 0x10, "ZCULL" },
+	{ 0x20, "ENG2D" },
+	{ 0x40, "RMASK" },
+	{ 0x80, "ROP" },
+	{}
 };
 
 static void
 nvkm_gr_vstatus_print(struct nv50_gr *gr, int r,
-		       const char *const units[], u32 status)
+		      const struct nvkm_bitfield *units, u32 status)
 {
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	u32 stat = status;
+	u8  mask = 0x00;
+	char msg[64];
 	int i;
 
-	nv_error(gr, "PGRAPH_VSTATUS%d: 0x%08x", r, status);
-
-	for (i = 0; units[i] && status; i++) {
+	for (i = 0; units[i].name && status; i++) {
 		if ((status & 7) == 1)
-			pr_cont(" %s", units[i]);
+			mask |= (1 << i);
 		status >>= 3;
 	}
-	if (status)
-		pr_cont(" (invalid: 0x%x)", status);
-	pr_cont("\n");
+
+	nvkm_snprintbf(msg, sizeof(msg), units, mask);
+	nvkm_error(subdev, "PGRAPH_VSTATUS%d: %08x [%s]\n", r, stat, msg);
 }
 
 static int
 g84_gr_tlb_flush(struct nvkm_engine *engine)
 {
 	struct nv50_gr *gr = (void *)engine;
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
 	struct nvkm_timer *tmr = device->timer;
 	bool idle, timeout = false;
 	unsigned long flags;
+	char status[128];
 	u64 start;
 	u32 tmp;
 
@@ -268,12 +293,11 @@ g84_gr_tlb_flush(struct nvkm_engine *engine)
 		 !(timeout = tmr->read(tmr) - start > 2000000000));
 
 	if (timeout) {
-		nv_error(gr, "PGRAPH TLB flush idle timeout fail\n");
+		nvkm_error(subdev, "PGRAPH TLB flush idle timeout fail\n");
 
 		tmp = nvkm_rd32(device, 0x400700);
-		nv_error(gr, "PGRAPH_STATUS  : 0x%08x", tmp);
-		nvkm_bitfield_print(nv50_gr_status, tmp);
-		pr_cont("\n");
+		nvkm_snprintbf(status, sizeof(status), nv50_gr_status, tmp);
+		nvkm_error(subdev, "PGRAPH_STATUS %08x [%s]\n", tmp, status);
 
 		nvkm_gr_vstatus_print(gr, 0, nv50_gr_vstatus_0,
 				       nvkm_rd32(device, 0x400380));
@@ -427,10 +451,10 @@ static const struct nvkm_bitfield nv50_gr_trap_prop[] = {
 };
 
 static void
-nv50_gr_prop_trap(struct nv50_gr *gr,
-		    u32 ustatus_addr, u32 ustatus, u32 tp)
+nv50_gr_prop_trap(struct nv50_gr *gr, u32 ustatus_addr, u32 ustatus, u32 tp)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	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);
@@ -438,40 +462,44 @@ nv50_gr_prop_trap(struct nv50_gr *gr,
 	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? */
-			nv_error(gr, "TRAP_PROP - TP %d - CUDA_FAULT - Global read fault at address %02x%08x\n",
+			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? */
-			nv_error(gr, "TRAP_PROP - TP %d - CUDA_FAULT - Global write fault at address %02x%08x\n",
+			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 {
-			nv_error(gr, "TRAP_PROP - TP %d - Unknown CUDA fault at address %02x%08x\n",
+			nvkm_error(subdev, "TRAP_PROP - TP %d - Unknown CUDA fault at address %02x%08x\n",
 				 tp, e14, e10);
 		}
 		ustatus &= ~0x00000080;
 	}
 	if (ustatus) {
-		nv_error(gr, "TRAP_PROP - TP %d -", tp);
-		nvkm_bitfield_print(nv50_gr_trap_prop, ustatus);
-		pr_cont(" - Address %02x%08x\n", e14, e10);
+		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);
 	}
-	nv_error(gr, "TRAP_PROP - TP %d - e0c: %08x, e18: %08x, e1c: %08x, e20: %08x, e24: %08x\n",
+	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_device *device = gr->base.engine.subdev.device;
+	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++) {
@@ -490,19 +518,20 @@ nv50_gr_mp_trap(struct nv50_gr *gr, int tpid, int display)
 			pc = nvkm_rd32(device, addr + 0x24);
 			oplow = nvkm_rd32(device, addr + 0x70);
 			ophigh = nvkm_rd32(device, addr + 0x74);
-			nv_error(gr, "TRAP_MP_EXEC - "
-					"TP %d MP %d:", tpid, i);
-			nvkm_bitfield_print(nv50_mp_exec_errors, status);
-			pr_cont(" at %06x warp %d, opcode %08x %08x\n",
-					pc&0xffffff, pc >> 24,
-					oplow, ophigh);
+			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)
-		nv_error(gr, "TRAP_MP_EXEC - TP %d: "
+		nvkm_error(subdev, "TRAP_MP_EXEC - TP %d: "
 				"No MPs claiming errors?\n", tpid);
 }
 
@@ -510,10 +539,12 @@ 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_device *device = gr->base.engine.subdev.device;
+	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)))
@@ -529,15 +560,16 @@ nv50_gr_tp_trap(struct nv50_gr *gr, int type, u32 ustatus_old,
 		switch (type) {
 		case 6: /* texture error... unknown for now */
 			if (display) {
-				nv_error(gr, "magic set %d:\n", i);
+				nvkm_error(subdev, "magic set %d:\n", i);
 				for (r = ustatus_addr + 4; r <= ustatus_addr + 0x10; r += 4)
-					nv_error(gr, "\t0x%08x: 0x%08x\n", r,
-						nvkm_rd32(device, r));
+					nvkm_error(subdev, "\t%08x: %08x\n", r,
+						   nvkm_rd32(device, r));
 				if (ustatus) {
-					nv_error(gr, "%s - TP%d:", name, i);
-					nvkm_bitfield_print(nv50_tex_traps,
-							       ustatus);
-					pr_cont("\n");
+					nvkm_snprintbf(msg, sizeof(msg),
+						       nv50_tex_traps, ustatus);
+					nvkm_error(subdev,
+						   "%s - TP%d: %08x [%s]\n",
+						   name, i, ustatus, msg);
 					ustatus = 0;
 				}
 			}
@@ -548,9 +580,10 @@ nv50_gr_tp_trap(struct nv50_gr *gr, int type, u32 ustatus_old,
 				ustatus &= ~0x04030000;
 			}
 			if (ustatus && display) {
-				nv_error(gr, "%s - TP%d:", name, i);
-				nvkm_bitfield_print(nv50_mpc_traps, ustatus);
-				pr_cont("\n");
+				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;
@@ -563,25 +596,27 @@ nv50_gr_tp_trap(struct nv50_gr *gr, int type, u32 ustatus_old,
 		}
 		if (ustatus) {
 			if (display)
-				nv_error(gr, "%s - TP%d: Unhandled ustatus 0x%08x\n", name, i, ustatus);
+				nvkm_error(subdev, "%s - TP%d: Unhandled ustatus %08x\n", name, i, ustatus);
 		}
 		nvkm_wr32(device, ustatus_addr, 0xc0000000);
 	}
 
 	if (!tps && display)
-		nv_warn(gr, "%s - No TPs claiming errors?\n", name);
+		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, struct nvkm_object *engctx)
 {
-	struct nvkm_device *device = gr->base.engine.subdev.device;
+	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) {
-		nv_error(gr, "TRAP: no units reporting traps?\n");
+		nvkm_error(subdev, "TRAP: no units reporting traps?\n");
 		return 1;
 	}
 
@@ -591,7 +626,7 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 	if (status & 0x001) {
 		ustatus = nvkm_rd32(device, 0x400804) & 0x7fffffff;
 		if (!ustatus && display) {
-			nv_error(gr, "TRAP_DISPATCH - no ustatus?\n");
+			nvkm_error(subdev, "TRAP_DISPATCH - no ustatus?\n");
 		}
 
 		nvkm_wr32(device, 0x400500, 0x00000000);
@@ -606,16 +641,19 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 			u32 class = nvkm_rd32(device, 0x400814);
 			u32 r848 = nvkm_rd32(device, 0x400848);
 
-			nv_error(gr, "TRAP DISPATCH_FAULT\n");
+			nvkm_error(subdev, "TRAP DISPATCH_FAULT\n");
 			if (display && (addr & 0x80000000)) {
-				nv_error(gr,
-					 "ch %d [0x%010llx %s] subc %d class 0x%04x mthd 0x%04x data 0x%08x%08x 400808 0x%08x 400848 0x%08x\n",
-					 chid, inst,
-					 nvkm_client_name(engctx), subc,
-					 class, mthd, datah, datal, addr, r848);
+				nvkm_error(subdev,
+					   "ch %d [%010llx %s] subc %d "
+					   "class %04x mthd %04x data %08x%08x "
+					   "400808 %08x 400848 %08x\n",
+					   chid, inst,
+					   nvkm_client_name(engctx),
+					   subc, class, mthd,
+					   datah, datal, addr, r848);
 			} else
 			if (display) {
-				nv_error(gr, "no stuck command?\n");
+				nvkm_error(subdev, "no stuck command?\n");
 			}
 
 			nvkm_wr32(device, 0x400808, 0);
@@ -631,16 +669,17 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 			u32 data = nvkm_rd32(device, 0x40085c);
 			u32 class = nvkm_rd32(device, 0x400814);
 
-			nv_error(gr, "TRAP DISPATCH_QUERY\n");
+			nvkm_error(subdev, "TRAP DISPATCH_QUERY\n");
 			if (display && (addr & 0x80000000)) {
-				nv_error(gr,
-					 "ch %d [0x%010llx %s] subc %d class 0x%04x mthd 0x%04x data 0x%08x 40084c 0x%08x\n",
-					 chid, inst,
-					 nvkm_client_name(engctx), subc,
-					 class, mthd, data, addr);
+				nvkm_error(subdev,
+					   "ch %d [%010llx %s] subc %d "
+					   "class %04x mthd %04x data %08x "
+					   "40084c %08x\n", chid, inst,
+					   nvkm_client_name(engctx), subc,
+					   class, mthd, data, addr);
 			} else
 			if (display) {
-				nv_error(gr, "no stuck command?\n");
+				nvkm_error(subdev, "no stuck command?\n");
 			}
 
 			nvkm_wr32(device, 0x40084c, 0);
@@ -648,8 +687,8 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 		}
 
 		if (ustatus && display) {
-			nv_error(gr, "TRAP_DISPATCH (unknown "
-				      "0x%08x)\n", ustatus);
+			nvkm_error(subdev, "TRAP_DISPATCH "
+					   "(unknown %08x)\n", ustatus);
 		}
 
 		nvkm_wr32(device, 0x400804, 0xc0000000);
@@ -663,13 +702,15 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 	if (status & 0x002) {
 		u32 ustatus = nvkm_rd32(device, 0x406800) & 0x7fffffff;
 		if (display) {
-			nv_error(gr, "TRAP_M2MF");
-			nvkm_bitfield_print(nv50_gr_trap_m2mf, ustatus);
-			pr_cont("\n");
-			nv_error(gr, "TRAP_M2MF %08x %08x %08x %08x\n",
-				nvkm_rd32(device, 0x406804), nvkm_rd32(device, 0x406808),
-				nvkm_rd32(device, 0x40680c), nvkm_rd32(device, 0x406810));
-
+			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. */
@@ -684,12 +725,15 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 	if (status & 0x004) {
 		u32 ustatus = nvkm_rd32(device, 0x400c04) & 0x7fffffff;
 		if (display) {
-			nv_error(gr, "TRAP_VFETCH");
-			nvkm_bitfield_print(nv50_gr_trap_vfetch, ustatus);
-			pr_cont("\n");
-			nv_error(gr, "TRAP_VFETCH %08x %08x %08x %08x\n",
-				nvkm_rd32(device, 0x400c00), nvkm_rd32(device, 0x400c08),
-				nvkm_rd32(device, 0x400c0c), nvkm_rd32(device, 0x400c10));
+			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);
@@ -701,13 +745,15 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 	if (status & 0x008) {
 		ustatus = nvkm_rd32(device, 0x401800) & 0x7fffffff;
 		if (display) {
-			nv_error(gr, "TRAP_STRMOUT");
-			nvkm_bitfield_print(nv50_gr_trap_strmout, ustatus);
-			pr_cont("\n");
-			nv_error(gr, "TRAP_STRMOUT %08x %08x %08x %08x\n",
-				nvkm_rd32(device, 0x401804), nvkm_rd32(device, 0x401808),
-				nvkm_rd32(device, 0x40180c), nvkm_rd32(device, 0x401810));
-
+			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. */
@@ -722,16 +768,19 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 	if (status & 0x010) {
 		ustatus = nvkm_rd32(device, 0x405018) & 0x7fffffff;
 		if (display) {
-			nv_error(gr, "TRAP_CCACHE");
-			nvkm_bitfield_print(nv50_gr_trap_ccache, ustatus);
-			pr_cont("\n");
-			nv_error(gr, "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_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);
@@ -745,7 +794,7 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 	if (status & 0x20) {
 		ustatus = nvkm_rd32(device, 0x402000) & 0x7fffffff;
 		if (display)
-			nv_error(gr, "TRAP_UNKC04 0x%08x\n", ustatus);
+			nvkm_error(subdev, "TRAP_UNKC04 %08x\n", ustatus);
 		nvkm_wr32(device, 0x402000, 0xc0000000);
 		/* no status modifiction on purpose */
 	}
@@ -777,7 +826,7 @@ nv50_gr_trap_handler(struct nv50_gr *gr, u32 display,
 
 	if (status) {
 		if (display)
-			nv_error(gr, "TRAP: unknown 0x%08x\n", status);
+			nvkm_error(subdev, "TRAP: unknown %08x\n", status);
 		nvkm_wr32(device, 0x400108, status);
 	}
 
@@ -801,6 +850,8 @@ nv50_gr_intr(struct nvkm_subdev *subdev)
 	u32 data = nvkm_rd32(device, 0x400708);
 	u32 class = nvkm_rd32(device, 0x400814);
 	u32 show = stat, show_bitfield = stat;
+	const struct nvkm_enum *en;
+	char msg[128];
 	int chid;
 
 	engctx = nvkm_engctx_get(engine, inst);
@@ -815,9 +866,9 @@ nv50_gr_intr(struct nvkm_subdev *subdev)
 
 	if (show & 0x00100000) {
 		u32 ecode = nvkm_rd32(device, 0x400110);
-		nv_error(gr, "DATA_ERROR ");
-		nvkm_enum_print(nv50_data_error_names, ecode);
-		pr_cont("\n");
+		en = nvkm_enum_find(nv50_data_error_names, ecode);
+		nvkm_error(subdev, "DATA_ERROR %08x [%s]\n",
+			   ecode, en ? en->name : "");
 		show_bitfield &= ~0x00100000;
 	}
 
@@ -833,15 +884,11 @@ nv50_gr_intr(struct nvkm_subdev *subdev)
 
 	if (show) {
 		show &= show_bitfield;
-		if (show) {
-			nv_error(gr, "%s", "");
-			nvkm_bitfield_print(nv50_gr_intr_name, show);
-			pr_cont("\n");
-		}
-		nv_error(gr,
-			 "ch %d [0x%010llx %s] subc %d class 0x%04x mthd 0x%04x data 0x%08x\n",
-			 chid, (u64)inst << 12, nvkm_client_name(engctx),
-			 subc, class, mthd, data);
+		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,
+			   nvkm_client_name(engctx), subc, class, mthd, data);
 	}
 
 	if (nvkm_rd32(device, 0x400824) & (1 << 31))