drm/nouveau/fifo: merge mmu fault handlers together

After updating GF100 implementation from the GK104/TU102 ones, and using
the new runlist/engine topology info, all three handlers become (almost)
identical.

- there's a temporary kludge to call through to the HW-specific recovery
- engine fault mapping info determined at load time, not on every fault
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c

@@ -295,7 +295,7 @@ gf100_fifo_recover(struct gf100_fifo *fifo, struct nvkm_engine *engine,
 }
 
 static const struct nvkm_enum
-gf100_fifo_fault_engine[] = {
+gf100_fifo_mmu_fault_engine[] = {
 	{ 0x00, "PGRAPH", NULL, NVKM_ENGINE_GR },
 	{ 0x03, "PEEPHOLE", NULL, NVKM_ENGINE_IFB },
 	{ 0x04, "BAR1", NULL, NVKM_SUBDEV_BAR },
@@ -312,7 +312,7 @@ gf100_fifo_fault_engine[] = {
 };
 
 static const struct nvkm_enum
-gf100_fifo_fault_reason[] = {
+gf100_fifo_mmu_fault_reason[] = {
 	{ 0x00, "PT_NOT_PRESENT" },
 	{ 0x01, "PT_TOO_SHORT" },
 	{ 0x02, "PAGE_NOT_PRESENT" },
@@ -326,7 +326,7 @@ gf100_fifo_fault_reason[] = {
 };
 
 static const struct nvkm_enum
-gf100_fifo_fault_hubclient[] = {
+gf100_fifo_mmu_fault_hubclient[] = {
 	{ 0x01, "PCOPY0" },
 	{ 0x02, "PCOPY1" },
 	{ 0x04, "DISPATCH" },
@@ -345,7 +345,7 @@ gf100_fifo_fault_hubclient[] = {
 };
 
 static const struct nvkm_enum
-gf100_fifo_fault_gpcclient[] = {
+gf100_fifo_mmu_fault_gpcclient[] = {
 	{ 0x01, "TEX" },
 	{ 0x0c, "ESETUP" },
 	{ 0x0e, "CTXCTL" },
@@ -353,29 +353,48 @@ gf100_fifo_fault_gpcclient[] = {
 	{}
 };
 
-static void
-gf100_fifo_fault(struct nvkm_fifo *base, struct nvkm_fault_data *info)
+const struct nvkm_enum
+gf100_fifo_mmu_fault_access[] = {
+	{ 0x00, "READ" },
+	{ 0x01, "WRITE" },
+	{}
+};
+
+void
+gf100_fifo_mmu_fault_recover(struct nvkm_fifo *fifo, struct nvkm_fault_data *info)
 {
-	struct gf100_fifo *fifo = gf100_fifo(base);
-	struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
+	struct nvkm_subdev *subdev = &fifo->engine.subdev;
 	struct nvkm_device *device = subdev->device;
-	const struct nvkm_enum *er, *eu, *ec;
+	const struct nvkm_enum *er, *ee, *ec, *ea;
 	struct nvkm_engine *engine = NULL;
 	struct nvkm_fifo_chan *chan;
+	struct nvkm_runl *runl;
+	struct nvkm_engn *engn;
 	unsigned long flags;
-	char gpcid[8] = "";
+	char ct[8] = "HUB/";
 
-	er = nvkm_enum_find(gf100_fifo_fault_reason, info->reason);
-	eu = nvkm_enum_find(gf100_fifo_fault_engine, info->engine);
+	/* Lookup engine by MMU fault ID. */
+	nvkm_runl_foreach(runl, fifo) {
+		engn = nvkm_runl_find_engn(engn, runl, engn->fault == info->engine);
+		if (engn) {
+			engine = engn->engine;
+			break;
+		}
+	}
+
+	er = nvkm_enum_find(fifo->func->mmu_fault->reason, info->reason);
+	ee = nvkm_enum_find(fifo->func->mmu_fault->engine, info->engine);
 	if (info->hub) {
-		ec = nvkm_enum_find(gf100_fifo_fault_hubclient, info->client);
+		ec = nvkm_enum_find(fifo->func->mmu_fault->hubclient, info->client);
 	} else {
-		ec = nvkm_enum_find(gf100_fifo_fault_gpcclient, info->client);
-		snprintf(gpcid, sizeof(gpcid), "GPC%d/", info->gpc);
+		ec = nvkm_enum_find(fifo->func->mmu_fault->gpcclient, info->client);
+		snprintf(ct, sizeof(ct), "GPC%d/", info->gpc);
 	}
+	ea = nvkm_enum_find(fifo->func->mmu_fault->access, info->access);
 
-	if (eu && eu->data2) {
-		switch (eu->data2) {
+	/* Handle BAR faults. */
+	if (ee && ee->data2) {
+		switch (ee->data2) {
 		case NVKM_SUBDEV_BAR:
 			nvkm_bar_bar1_reset(device);
 			break;
@@ -386,30 +405,39 @@ gf100_fifo_fault(struct nvkm_fifo *base, struct nvkm_fault_data *info)
 			nvkm_mask(device, 0x001718, 0x00000000, 0x00000000);
 			break;
 		default:
-			engine = nvkm_device_engine(device, eu->data2, eu->inst);
 			break;
 		}
 	}
 
-	chan = nvkm_fifo_chan_inst(&fifo->base, info->inst, &flags);
+	chan = nvkm_fifo_chan_inst(fifo, info->inst, &flags);
 
 	nvkm_error(subdev,
-		   "%s fault at %010llx engine %02x [%s] client %02x [%s%s] "
-		   "reason %02x [%s] on channel %d [%010llx %s]\n",
-		   info->access ? "write" : "read", info->addr,
-		   info->engine, eu ? eu->name : "",
-		   info->client, gpcid, ec ? ec->name : "",
-		   info->reason, er ? er->name : "", chan ? chan->chid : -1,
-		   info->inst, chan ? chan->object.client->name : "unknown");
-
+		   "fault %02x [%s] at %016llx engine %02x [%s] client %02x "
+		   "[%s%s] reason %02x [%s] on channel %d [%010llx %s]\n",
+		   info->access, ea ? ea->name : "", info->addr,
+		   info->engine, ee ? ee->name : engine ? engine->subdev.name : "",
+		   info->client, ct, ec ? ec->name : "",
+		   info->reason, er ? er->name : "",
+		   chan ? chan->id : -1, info->inst, chan ? chan->name : "unknown");
+
+	/* Handle host/engine faults. */
+	if (fifo->func->recover_chan && chan)
+		fifo->func->recover_chan(fifo, chan->id);
+	else
 	if (engine && chan)
-		gf100_fifo_recover(fifo, engine, (void *)chan);
-	nvkm_fifo_chan_put(&fifo->base, flags, &chan);
+		gf100_fifo_recover(gf100_fifo(fifo), engine, (void *)chan);
+
+	nvkm_fifo_chan_put(fifo, flags, &chan);
 }
 
 static const struct nvkm_fifo_func_mmu_fault
 gf100_fifo_mmu_fault = {
-	.recover = gf100_fifo_fault,
+	.recover = gf100_fifo_mmu_fault_recover,
+	.access = gf100_fifo_mmu_fault_access,
+	.engine = gf100_fifo_mmu_fault_engine,
+	.reason = gf100_fifo_mmu_fault_reason,
+	.hubclient = gf100_fifo_mmu_fault_hubclient,
+	.gpcclient = gf100_fifo_mmu_fault_gpcclient,
 };
 
 static const struct nvkm_enum
@@ -498,6 +526,19 @@ gf100_fifo_intr_mmu_fault_unit(struct nvkm_fifo *fifo, int unit)
 	nvkm_fifo_fault(fifo, &info);
 }
 
+void
+gf100_fifo_intr_mmu_fault(struct nvkm_fifo *fifo)
+{
+	struct nvkm_device *device = fifo->engine.subdev.device;
+	unsigned long mask = nvkm_rd32(device, 0x00259c);
+	int unit;
+
+	for_each_set_bit(unit, &mask, 32) {
+		fifo->func->intr_mmu_fault_unit(fifo, unit);
+		nvkm_wr32(device, 0x00259c, BIT(unit));
+	}
+}
+
 bool
 gf100_fifo_intr_pbdma(struct nvkm_fifo *fifo)
 {
@@ -609,13 +650,7 @@ gf100_fifo_intr(struct nvkm_inth *inth)
 	}
 
 	if (stat & 0x10000000) {
-		u32 mask = nvkm_rd32(device, 0x00259c);
-		while (mask) {
-			u32 unit = __ffs(mask);
-			gf100_fifo_intr_mmu_fault_unit(fifo, unit);
-			nvkm_wr32(device, 0x00259c, (1 << unit));
-			mask &= ~(1 << unit);
-		}
+		gf100_fifo_intr_mmu_fault(fifo);
 		stat &= ~0x10000000;
 	}
 
@@ -783,6 +818,7 @@ gf100_fifo = {
 	.init_pbdmas = gf100_fifo_init_pbdmas,
 	.fini = gf100_fifo_fini,
 	.intr = gf100_fifo_intr,
+	.intr_mmu_fault_unit = gf100_fifo_intr_mmu_fault_unit,
 	.mmu_fault = &gf100_fifo_mmu_fault,
 	.engine_id = gf100_fifo_engine_id,
 	.nonstall = &gf100_fifo_nonstall,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c

@@ -30,10 +30,8 @@
 #include "cgrp.h"
 #include "changk104.h"
 
-#include <core/client.h>
 #include <core/gpuobj.h>
 #include <subdev/bar.h>
-#include <subdev/fault.h>
 #include <subdev/mc.h>
 #include <subdev/timer.h>
 #include <subdev/top.h>
@@ -474,7 +472,7 @@ gk104_fifo_recover_engn(struct gk104_fifo *fifo, int engn)
 	if (!status.faulted && engine) {
 		mmui = nvkm_top_fault_id(device, engine->subdev.type, engine->subdev.inst);
 		if (mmui < 0) {
-			const struct nvkm_enum *en = fifo->func->fault.engine;
+			const struct nvkm_enum *en = fifo->func->mmu_fault->engine;
 			for (; en && en->name; en++) {
 				if (en->data2 == engine->subdev.type &&
 				    en->inst  == engine->subdev.inst) {
@@ -512,15 +510,8 @@ gk104_fifo_recover_engn(struct gk104_fifo *fifo, int engn)
 	schedule_work(&fifo->recover.work);
 }
 
-const struct nvkm_enum
-gk104_fifo_fault_access[] = {
-	{ 0x0, "READ" },
-	{ 0x1, "WRITE" },
-	{}
-};
-
-const struct nvkm_enum
-gk104_fifo_fault_engine[] = {
+static const struct nvkm_enum
+gk104_fifo_mmu_fault_engine[] = {
 	{ 0x00, "GR", NULL, NVKM_ENGINE_GR },
 	{ 0x01, "DISPLAY" },
 	{ 0x02, "CAPTURE" },
@@ -528,14 +519,14 @@ gk104_fifo_fault_engine[] = {
 	{ 0x04, "BAR1", NULL, NVKM_SUBDEV_BAR },
 	{ 0x05, "BAR2", NULL, NVKM_SUBDEV_INSTMEM },
 	{ 0x06, "SCHED" },
-	{ 0x07, "HOST0", NULL, NVKM_ENGINE_FIFO },
-	{ 0x08, "HOST1", NULL, NVKM_ENGINE_FIFO },
-	{ 0x09, "HOST2", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0a, "HOST3", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0b, "HOST4", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0c, "HOST5", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0d, "HOST6", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0e, "HOST7", NULL, NVKM_ENGINE_FIFO },
+	{ 0x07, "HOST0" },
+	{ 0x08, "HOST1" },
+	{ 0x09, "HOST2" },
+	{ 0x0a, "HOST3" },
+	{ 0x0b, "HOST4" },
+	{ 0x0c, "HOST5" },
+	{ 0x0d, "HOST6" },
+	{ 0x0e, "HOST7" },
 	{ 0x0f, "HOSTSR" },
 	{ 0x10, "MSVLD", NULL, NVKM_ENGINE_MSVLD },
 	{ 0x11, "MSPPP", NULL, NVKM_ENGINE_MSPPP },
@@ -551,7 +542,7 @@ gk104_fifo_fault_engine[] = {
 };
 
 const struct nvkm_enum
-gk104_fifo_fault_reason[] = {
+gk104_fifo_mmu_fault_reason[] = {
 	{ 0x00, "PDE" },
 	{ 0x01, "PDE_SIZE" },
 	{ 0x02, "PTE" },
@@ -572,7 +563,7 @@ gk104_fifo_fault_reason[] = {
 };
 
 const struct nvkm_enum
-gk104_fifo_fault_hubclient[] = {
+gk104_fifo_mmu_fault_hubclient[] = {
 	{ 0x00, "VIP" },
 	{ 0x01, "CE0" },
 	{ 0x02, "CE1" },
@@ -609,7 +600,7 @@ gk104_fifo_fault_hubclient[] = {
 };
 
 const struct nvkm_enum
-gk104_fifo_fault_gpcclient[] = {
+gk104_fifo_mmu_fault_gpcclient[] = {
 	{ 0x00, "L1_0" }, { 0x01, "T1_0" }, { 0x02, "PE_0" },
 	{ 0x03, "L1_1" }, { 0x04, "T1_1" }, { 0x05, "PE_1" },
 	{ 0x06, "L1_2" }, { 0x07, "T1_2" }, { 0x08, "PE_2" },
@@ -634,89 +625,14 @@ gk104_fifo_fault_gpcclient[] = {
 	{}
 };
 
-void
-gk104_fifo_fault(struct nvkm_fifo *base, struct nvkm_fault_data *info)
-{
-	struct gk104_fifo *fifo = gk104_fifo(base);
-	struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
-	struct nvkm_device *device = subdev->device;
-	const struct nvkm_enum *er, *ee, *ec, *ea;
-	struct nvkm_engine *engine = NULL;
-	struct nvkm_fifo_chan *chan;
-	unsigned long flags;
-	const char *en = "";
-	char ct[8] = "HUB/";
-
-	er = nvkm_enum_find(fifo->func->fault.reason, info->reason);
-	ee = nvkm_enum_find(fifo->func->fault.engine, info->engine);
-	if (info->hub) {
-		ec = nvkm_enum_find(fifo->func->fault.hubclient, info->client);
-	} else {
-		ec = nvkm_enum_find(fifo->func->fault.gpcclient, info->client);
-		snprintf(ct, sizeof(ct), "GPC%d/", info->gpc);
-	}
-	ea = nvkm_enum_find(fifo->func->fault.access, info->access);
-
-	if (ee && ee->data2) {
-		switch (ee->data2) {
-		case NVKM_SUBDEV_BAR:
-			nvkm_bar_bar1_reset(device);
-			break;
-		case NVKM_SUBDEV_INSTMEM:
-			nvkm_bar_bar2_reset(device);
-			break;
-		case NVKM_ENGINE_IFB:
-			nvkm_mask(device, 0x001718, 0x00000000, 0x00000000);
-			break;
-		default:
-			engine = nvkm_device_engine(device, ee->data2, 0);
-			break;
-		}
-	}
-
-	if (ee == NULL) {
-		struct nvkm_subdev *subdev = nvkm_top_fault(device, info->engine);
-		if (subdev) {
-			if (subdev->func == &nvkm_engine)
-				engine = container_of(subdev, typeof(*engine), subdev);
-			en = engine->subdev.name;
-		}
-	} else {
-		en = ee->name;
-	}
-
-	spin_lock_irqsave(&fifo->base.lock, flags);
-	chan = nvkm_fifo_chan_inst_locked(&fifo->base, info->inst);
-
-	nvkm_error(subdev,
-		   "fault %02x [%s] at %016llx engine %02x [%s] client %02x "
-		   "[%s%s] reason %02x [%s] on channel %d [%010llx %s]\n",
-		   info->access, ea ? ea->name : "", info->addr,
-		   info->engine, ee ? ee->name : en,
-		   info->client, ct, ec ? ec->name : "",
-		   info->reason, er ? er->name : "", chan ? chan->chid : -1,
-		   info->inst, chan ? chan->object.client->name : "unknown");
-
-	/* Kill the channel that caused the fault. */
-	if (chan)
-		gk104_fifo_recover_chan(&fifo->base, chan->chid);
-
-	/* Channel recovery will probably have already done this for the
-	 * correct engine(s), but just in case we can't find the channel
-	 * information...
-	 */
-	if (engine) {
-		int engn = fifo->base.func->engine_id(&fifo->base, engine);
-		if (engn >= 0 && engn != GK104_FIFO_ENGN_SW)
-			gk104_fifo_recover_engn(fifo, engn);
-	}
-
-	spin_unlock_irqrestore(&fifo->base.lock, flags);
-}
-
 const struct nvkm_fifo_func_mmu_fault
 gk104_fifo_mmu_fault = {
-	.recover = gk104_fifo_fault,
+	.recover = gf100_fifo_mmu_fault_recover,
+	.access = gf100_fifo_mmu_fault_access,
+	.engine = gk104_fifo_mmu_fault_engine,
+	.reason = gk104_fifo_mmu_fault_reason,
+	.hubclient = gk104_fifo_mmu_fault_hubclient,
+	.gpcclient = gk104_fifo_mmu_fault_gpcclient,
 };
 
 static const struct nvkm_enum
@@ -884,13 +800,7 @@ gk104_fifo_intr(struct nvkm_inth *inth)
 	}
 
 	if (stat & 0x10000000) {
-		u32 mask = nvkm_rd32(device, 0x00259c);
-		while (mask) {
-			u32 unit = __ffs(mask);
-			fifo->func->intr_mmu_fault_unit(fifo, unit);
-			nvkm_wr32(device, 0x00259c, (1 << unit));
-			mask &= ~(1 << unit);
-		}
+		gf100_fifo_intr_mmu_fault(fifo);
 		stat &= ~0x10000000;
 	}
 
@@ -1105,11 +1015,6 @@ gk104_fifo = {
 	.intr = gk104_fifo_intr,
 	.intr_mmu_fault_unit = gf100_fifo_intr_mmu_fault_unit,
 	.mmu_fault = &gk104_fifo_mmu_fault,
-	.fault.access = gk104_fifo_fault_access,
-	.fault.engine = gk104_fifo_fault_engine,
-	.fault.reason = gk104_fifo_fault_reason,
-	.fault.hubclient = gk104_fifo_fault_hubclient,
-	.fault.gpcclient = gk104_fifo_fault_gpcclient,
 	.engine_id = gk104_fifo_engine_id,
 	.recover_chan = gk104_fifo_recover_chan,
 	.runlist = &gk104_fifo_runlist,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.h

@@ -69,11 +69,6 @@ int gk104_fifo_oneinit(struct nvkm_fifo *);
 void gk104_fifo_init(struct nvkm_fifo *base);
 void gk104_fifo_fini(struct nvkm_fifo *base);
 
-extern const struct nvkm_enum gk104_fifo_fault_access[];
-extern const struct nvkm_enum gk104_fifo_fault_engine[];
-extern const struct nvkm_enum gk104_fifo_fault_reason[];
-extern const struct nvkm_enum gk104_fifo_fault_hubclient[];
-extern const struct nvkm_enum gk104_fifo_fault_gpcclient[];
 extern const struct gk104_fifo_runlist_func gk104_fifo_runlist;
 void gk104_fifo_runlist_chan(struct gk104_fifo_chan *,
 			     struct nvkm_memory *, u32);
@@ -84,17 +79,8 @@ extern const struct gk104_fifo_runlist_func gk110_fifo_runlist;
 void gk110_fifo_runlist_cgrp(struct nvkm_fifo_cgrp *,
 			     struct nvkm_memory *, u32);
 
-void gk208_fifo_pbdma_init_timeout(struct gk104_fifo *);
-
-extern const struct nvkm_enum gm107_fifo_fault_engine[];
 extern const struct gk104_fifo_runlist_func gm107_fifo_runlist;
 
-extern const struct nvkm_enum gp100_fifo_fault_engine[];
-
-extern const struct nvkm_enum gv100_fifo_fault_access[];
-extern const struct nvkm_enum gv100_fifo_fault_reason[];
-extern const struct nvkm_enum gv100_fifo_fault_hubclient[];
-extern const struct nvkm_enum gv100_fifo_fault_gpcclient[];
 void gv100_fifo_runlist_cgrp(struct nvkm_fifo_cgrp *,
 			     struct nvkm_memory *, u32);
 void gv100_fifo_runlist_chan(struct gk104_fifo_chan *,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk110.c

@@ -88,11 +88,6 @@ gk110_fifo = {
 	.intr = gk104_fifo_intr,
 	.intr_mmu_fault_unit = gf100_fifo_intr_mmu_fault_unit,
 	.mmu_fault = &gk104_fifo_mmu_fault,
-	.fault.access = gk104_fifo_fault_access,
-	.fault.engine = gk104_fifo_fault_engine,
-	.fault.reason = gk104_fifo_fault_reason,
-	.fault.hubclient = gk104_fifo_fault_hubclient,
-	.fault.gpcclient = gk104_fifo_fault_gpcclient,
 	.engine_id = gk104_fifo_engine_id,
 	.recover_chan = gk104_fifo_recover_chan,
 	.runlist = &gk110_fifo_runlist,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk208.c

@@ -62,11 +62,6 @@ gk208_fifo = {
 	.intr = gk104_fifo_intr,
 	.intr_mmu_fault_unit = gf100_fifo_intr_mmu_fault_unit,
 	.mmu_fault = &gk104_fifo_mmu_fault,
-	.fault.access = gk104_fifo_fault_access,
-	.fault.engine = gk104_fifo_fault_engine,
-	.fault.reason = gk104_fifo_fault_reason,
-	.fault.hubclient = gk104_fifo_fault_hubclient,
-	.fault.gpcclient = gk104_fifo_fault_gpcclient,
 	.engine_id = gk104_fifo_engine_id,
 	.recover_chan = gk104_fifo_recover_chan,
 	.runlist = &gk110_fifo_runlist,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk20a.c

@@ -38,11 +38,6 @@ gk20a_fifo = {
 	.intr = gk104_fifo_intr,
 	.intr_mmu_fault_unit = gf100_fifo_intr_mmu_fault_unit,
 	.mmu_fault = &gk104_fifo_mmu_fault,
-	.fault.access = gk104_fifo_fault_access,
-	.fault.engine = gk104_fifo_fault_engine,
-	.fault.reason = gk104_fifo_fault_reason,
-	.fault.hubclient = gk104_fifo_fault_hubclient,
-	.fault.gpcclient = gk104_fifo_fault_gpcclient,
 	.engine_id = gk104_fifo_engine_id,
 	.recover_chan = gk104_fifo_recover_chan,
 	.runlist = &gk110_fifo_runlist,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm107.c

@@ -56,22 +56,22 @@ const struct nvkm_runl_func
 gm107_runl = {
 };
 
-const struct nvkm_enum
-gm107_fifo_fault_engine[] = {
+static const struct nvkm_enum
+gm107_fifo_mmu_fault_engine[] = {
 	{ 0x01, "DISPLAY" },
 	{ 0x02, "CAPTURE" },
 	{ 0x03, "IFB", NULL, NVKM_ENGINE_IFB },
 	{ 0x04, "BAR1", NULL, NVKM_SUBDEV_BAR },
 	{ 0x05, "BAR2", NULL, NVKM_SUBDEV_INSTMEM },
 	{ 0x06, "SCHED" },
-	{ 0x07, "HOST0", NULL, NVKM_ENGINE_FIFO },
-	{ 0x08, "HOST1", NULL, NVKM_ENGINE_FIFO },
-	{ 0x09, "HOST2", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0a, "HOST3", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0b, "HOST4", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0c, "HOST5", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0d, "HOST6", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0e, "HOST7", NULL, NVKM_ENGINE_FIFO },
+	{ 0x07, "HOST0" },
+	{ 0x08, "HOST1" },
+	{ 0x09, "HOST2" },
+	{ 0x0a, "HOST3" },
+	{ 0x0b, "HOST4" },
+	{ 0x0c, "HOST5" },
+	{ 0x0d, "HOST6" },
+	{ 0x0e, "HOST7" },
 	{ 0x0f, "HOSTSR" },
 	{ 0x13, "PERF" },
 	{ 0x17, "PMU" },
@@ -81,7 +81,12 @@ gm107_fifo_fault_engine[] = {
 
 const struct nvkm_fifo_func_mmu_fault
 gm107_fifo_mmu_fault = {
-	.recover = gk104_fifo_fault,
+	.recover = gf100_fifo_mmu_fault_recover,
+	.access = gf100_fifo_mmu_fault_access,
+	.engine = gm107_fifo_mmu_fault_engine,
+	.reason = gk104_fifo_mmu_fault_reason,
+	.hubclient = gk104_fifo_mmu_fault_hubclient,
+	.gpcclient = gk104_fifo_mmu_fault_gpcclient,
 };
 
 void
@@ -128,11 +133,6 @@ gm107_fifo = {
 	.intr = gk104_fifo_intr,
 	.intr_mmu_fault_unit = gm107_fifo_intr_mmu_fault_unit,
 	.mmu_fault = &gm107_fifo_mmu_fault,
-	.fault.access = gk104_fifo_fault_access,
-	.fault.engine = gm107_fifo_fault_engine,
-	.fault.reason = gk104_fifo_fault_reason,
-	.fault.hubclient = gk104_fifo_fault_hubclient,
-	.fault.gpcclient = gk104_fifo_fault_gpcclient,
 	.engine_id = gk104_fifo_engine_id,
 	.recover_chan = gk104_fifo_recover_chan,
 	.runlist = &gm107_fifo_runlist,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c

@@ -52,11 +52,6 @@ gm200_fifo = {
 	.intr = gk104_fifo_intr,
 	.intr_mmu_fault_unit = gm107_fifo_intr_mmu_fault_unit,
 	.mmu_fault = &gm107_fifo_mmu_fault,
-	.fault.access = gk104_fifo_fault_access,
-	.fault.engine = gm107_fifo_fault_engine,
-	.fault.reason = gk104_fifo_fault_reason,
-	.fault.hubclient = gk104_fifo_fault_hubclient,
-	.fault.gpcclient = gk104_fifo_fault_gpcclient,
 	.engine_id = gk104_fifo_engine_id,
 	.recover_chan = gk104_fifo_recover_chan,
 	.runlist = &gm107_fifo_runlist,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gp100.c

@@ -33,23 +33,23 @@ static const struct nvkm_runl_func
 gp100_runl = {
 };
 
-const struct nvkm_enum
-gp100_fifo_fault_engine[] = {
+static const struct nvkm_enum
+gp100_fifo_mmu_fault_engine[] = {
 	{ 0x01, "DISPLAY" },
 	{ 0x03, "IFB", NULL, NVKM_ENGINE_IFB },
 	{ 0x04, "BAR1", NULL, NVKM_SUBDEV_BAR },
 	{ 0x05, "BAR2", NULL, NVKM_SUBDEV_INSTMEM },
-	{ 0x06, "HOST0", NULL, NVKM_ENGINE_FIFO },
-	{ 0x07, "HOST1", NULL, NVKM_ENGINE_FIFO },
-	{ 0x08, "HOST2", NULL, NVKM_ENGINE_FIFO },
-	{ 0x09, "HOST3", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0a, "HOST4", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0b, "HOST5", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0c, "HOST6", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0d, "HOST7", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0e, "HOST8", NULL, NVKM_ENGINE_FIFO },
-	{ 0x0f, "HOST9", NULL, NVKM_ENGINE_FIFO },
-	{ 0x10, "HOST10", NULL, NVKM_ENGINE_FIFO },
+	{ 0x06, "HOST0" },
+	{ 0x07, "HOST1" },
+	{ 0x08, "HOST2" },
+	{ 0x09, "HOST3" },
+	{ 0x0a, "HOST4" },
+	{ 0x0b, "HOST5" },
+	{ 0x0c, "HOST6" },
+	{ 0x0d, "HOST7" },
+	{ 0x0e, "HOST8" },
+	{ 0x0f, "HOST9" },
+	{ 0x10, "HOST10" },
 	{ 0x13, "PERF" },
 	{ 0x17, "PMU" },
 	{ 0x18, "PTP" },
@@ -59,10 +59,15 @@ gp100_fifo_fault_engine[] = {
 
 static const struct nvkm_fifo_func_mmu_fault
 gp100_fifo_mmu_fault = {
-	.recover = gk104_fifo_fault,
+	.recover = gf100_fifo_mmu_fault_recover,
+	.access = gf100_fifo_mmu_fault_access,
+	.engine = gp100_fifo_mmu_fault_engine,
+	.reason = gk104_fifo_mmu_fault_reason,
+	.hubclient = gk104_fifo_mmu_fault_hubclient,
+	.gpcclient = gk104_fifo_mmu_fault_gpcclient,
 };
 
-void
+static void
 gp100_fifo_intr_mmu_fault_unit(struct nvkm_fifo *fifo, int unit)
 {
 	struct nvkm_device *device = fifo->engine.subdev.device;
@@ -100,11 +105,6 @@ gp100_fifo = {
 	.intr = gk104_fifo_intr,
 	.intr_mmu_fault_unit = gp100_fifo_intr_mmu_fault_unit,
 	.mmu_fault = &gp100_fifo_mmu_fault,
-	.fault.access = gk104_fifo_fault_access,
-	.fault.engine = gp100_fifo_fault_engine,
-	.fault.reason = gk104_fifo_fault_reason,
-	.fault.hubclient = gk104_fifo_fault_hubclient,
-	.fault.gpcclient = gk104_fifo_fault_gpcclient,
 	.engine_id = gk104_fifo_engine_id,
 	.recover_chan = gk104_fifo_recover_chan,
 	.runlist = &gm107_fifo_runlist,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/gv100.c

@@ -87,7 +87,7 @@ gv100_runl = {
 };
 
 const struct nvkm_enum
-gv100_fifo_fault_gpcclient[] = {
+gv100_fifo_mmu_fault_gpcclient[] = {
 	{ 0x00, "T1_0" },
 	{ 0x01, "T1_1" },
 	{ 0x02, "T1_2" },
@@ -189,7 +189,7 @@ gv100_fifo_fault_gpcclient[] = {
 };
 
 const struct nvkm_enum
-gv100_fifo_fault_hubclient[] = {
+gv100_fifo_mmu_fault_hubclient[] = {
 	{ 0x00, "VIP" },
 	{ 0x01, "CE0" },
 	{ 0x02, "CE1" },
@@ -251,7 +251,7 @@ gv100_fifo_fault_hubclient[] = {
 };
 
 const struct nvkm_enum
-gv100_fifo_fault_reason[] = {
+gv100_fifo_mmu_fault_reason[] = {
 	{ 0x00, "PDE" },
 	{ 0x01, "PDE_SIZE" },
 	{ 0x02, "PTE" },
@@ -272,7 +272,7 @@ gv100_fifo_fault_reason[] = {
 };
 
 static const struct nvkm_enum
-gv100_fifo_fault_engine[] = {
+gv100_fifo_mmu_fault_engine[] = {
 	{ 0x01, "DISPLAY" },
 	{ 0x03, "PTP" },
 	{ 0x04, "BAR1", NULL, NVKM_SUBDEV_BAR },
@@ -299,7 +299,7 @@ gv100_fifo_fault_engine[] = {
 };
 
 const struct nvkm_enum
-gv100_fifo_fault_access[] = {
+gv100_fifo_mmu_fault_access[] = {
 	{ 0x0, "VIRT_READ" },
 	{ 0x1, "VIRT_WRITE" },
 	{ 0x2, "VIRT_ATOMIC" },
@@ -314,7 +314,12 @@ gv100_fifo_fault_access[] = {
 
 static const struct nvkm_fifo_func_mmu_fault
 gv100_fifo_mmu_fault = {
-	.recover = gk104_fifo_fault,
+	.recover = gf100_fifo_mmu_fault_recover,
+	.access = gv100_fifo_mmu_fault_access,
+	.engine = gv100_fifo_mmu_fault_engine,
+	.reason = gv100_fifo_mmu_fault_reason,
+	.hubclient = gv100_fifo_mmu_fault_hubclient,
+	.gpcclient = gv100_fifo_mmu_fault_gpcclient,
 };
 
 static const struct nvkm_fifo_func
@@ -330,11 +335,6 @@ gv100_fifo = {
 	.fini = gk104_fifo_fini,
 	.intr = gk104_fifo_intr,
 	.mmu_fault = &gv100_fifo_mmu_fault,
-	.fault.access = gv100_fifo_fault_access,
-	.fault.engine = gv100_fifo_fault_engine,
-	.fault.reason = gv100_fifo_fault_reason,
-	.fault.hubclient = gv100_fifo_fault_hubclient,
-	.fault.gpcclient = gv100_fifo_fault_gpcclient,
 	.engine_id = gk104_fifo_engine_id,
 	.recover_chan = gk104_fifo_recover_chan,
 	.runlist = &gv100_fifo_runlist,

drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h

@@ -37,15 +37,12 @@ struct nvkm_fifo_func {
 
 	const struct nvkm_fifo_func_mmu_fault {
 		void (*recover)(struct nvkm_fifo *, struct nvkm_fault_data *);
-	} *mmu_fault;
-
-	struct {
 		const struct nvkm_enum *access;
 		const struct nvkm_enum *engine;
 		const struct nvkm_enum *reason;
 		const struct nvkm_enum *hubclient;
 		const struct nvkm_enum *gpcclient;
-	} fault;
+	} *mmu_fault;
 
 	int (*engine_id)(struct nvkm_fifo *, struct nvkm_engine *);
 	void (*pause)(struct nvkm_fifo *, unsigned long *);
@@ -116,7 +113,10 @@ extern const struct nvkm_chan_func g84_chan;
 int gf100_fifo_chid_ctor(struct nvkm_fifo *, int);
 int gf100_fifo_runq_nr(struct nvkm_fifo *);
 bool gf100_fifo_intr_pbdma(struct nvkm_fifo *);
+void gf100_fifo_intr_mmu_fault(struct nvkm_fifo *);
 void gf100_fifo_intr_mmu_fault_unit(struct nvkm_fifo *, int);
+void gf100_fifo_mmu_fault_recover(struct nvkm_fifo *, struct nvkm_fault_data *);
+extern const struct nvkm_enum gf100_fifo_mmu_fault_access[];
 extern const struct nvkm_event_func gf100_fifo_nonstall;
 void gf100_runq_init(struct nvkm_runq *);
 bool gf100_runq_intr(struct nvkm_runq *, struct nvkm_runl *);
@@ -129,7 +129,9 @@ irqreturn_t gk104_fifo_intr(struct nvkm_inth *);
 void gk104_fifo_intr_chsw(struct nvkm_fifo *);
 void gk104_fifo_intr_bind(struct nvkm_fifo *);
 extern const struct nvkm_fifo_func_mmu_fault gk104_fifo_mmu_fault;
-void gk104_fifo_fault(struct nvkm_fifo *, struct nvkm_fault_data *);
+extern const struct nvkm_enum gk104_fifo_mmu_fault_reason[];
+extern const struct nvkm_enum gk104_fifo_mmu_fault_hubclient[];
+extern const struct nvkm_enum gk104_fifo_mmu_fault_gpcclient[];
 void gk104_fifo_recover_chan(struct nvkm_fifo *, int);
 int gk104_fifo_engine_id(struct nvkm_fifo *, struct nvkm_engine *);
 extern const struct nvkm_runq_func gk104_runq;
@@ -155,8 +157,10 @@ extern const struct nvkm_chan_func gm107_chan;
 int gm200_fifo_chid_nr(struct nvkm_fifo *);
 int gm200_fifo_runq_nr(struct nvkm_fifo *);
 
-void gp100_fifo_intr_mmu_fault_unit(struct nvkm_fifo *, int);
-
+extern const struct nvkm_enum gv100_fifo_mmu_fault_access[];
+extern const struct nvkm_enum gv100_fifo_mmu_fault_reason[];
+extern const struct nvkm_enum gv100_fifo_mmu_fault_hubclient[];
+extern const struct nvkm_enum gv100_fifo_mmu_fault_gpcclient[];
 extern const struct nvkm_runq_func gv100_runq;
 extern const struct nvkm_engn_func gv100_engn;
 extern const struct nvkm_engn_func gv100_engn_ce;

drivers/gpu/drm/nouveau/nvkm/engine/fifo/runl.c

@@ -24,6 +24,8 @@
 #include "chid.h"
 #include "priv.h"
 
+#include <subdev/top.h>
+
 void
 nvkm_runl_del(struct nvkm_runl *runl)
 {
@@ -46,7 +48,8 @@ struct nvkm_engn *
 nvkm_runl_add(struct nvkm_runl *runl, int engi, const struct nvkm_engn_func *func,
 	      enum nvkm_subdev_type type, int inst)
 {
-	struct nvkm_device *device = runl->fifo->engine.subdev.device;
+	struct nvkm_fifo *fifo = runl->fifo;
+	struct nvkm_device *device = fifo->engine.subdev.device;
 	struct nvkm_engine *engine;
 	struct nvkm_engn *engn;
 
@@ -63,7 +66,25 @@ nvkm_runl_add(struct nvkm_runl *runl, int engi, const struct nvkm_engn_func *fun
 	engn->runl = runl;
 	engn->id = engi;
 	engn->engine = engine;
+	engn->fault = -1;
 	list_add_tail(&engn->head, &runl->engns);
+
+	/* Lookup MMU engine ID for fault handling. */
+	if (device->top)
+		engn->fault = nvkm_top_fault_id(device, engine->subdev.type, engine->subdev.inst);
+
+	if (engn->fault < 0 && fifo->func->mmu_fault) {
+		const struct nvkm_enum *map = fifo->func->mmu_fault->engine;
+
+		while (map->name) {
+			if (map->data2 == engine->subdev.type && map->inst == engine->subdev.inst) {
+				engn->fault = map->value;
+				break;
+			}
+			map++;
+		}
+	}
+
 	return engn;
 }
 

drivers/gpu/drm/nouveau/nvkm/engine/fifo/runl.h

@@ -13,6 +13,8 @@ struct nvkm_engn {
 
 	struct nvkm_engine *engine;
 
+	int fault;
+
 	struct list_head head;
 };
 

drivers/gpu/drm/nouveau/nvkm/engine/fifo/tu102.c

@@ -26,12 +26,8 @@
 #include "cgrp.h"
 #include "changk104.h"
 
-#include <core/client.h>
 #include <core/memory.h>
-#include <subdev/bar.h>
-#include <subdev/fault.h>
 #include <subdev/mc.h>
-#include <subdev/top.h>
 
 #include <nvif/class.h>
 
@@ -67,7 +63,7 @@ tu102_runl = {
 };
 
 static const struct nvkm_enum
-tu102_fifo_fault_engine[] = {
+tu102_fifo_mmu_fault_engine[] = {
 	{ 0x01, "DISPLAY" },
 	{ 0x03, "PTP" },
 	{ 0x06, "PWR_PMU" },
@@ -247,91 +243,14 @@ tu102_fifo_recover_engn(struct gk104_fifo *fifo, int engn)
 	schedule_work(&fifo->recover.work);
 }
 
-static void
-tu102_fifo_fault(struct nvkm_fifo *base, struct nvkm_fault_data *info)
-{
-	struct gk104_fifo *fifo = gk104_fifo(base);
-	struct nvkm_subdev *subdev = &fifo->base.engine.subdev;
-	struct nvkm_device *device = subdev->device;
-	const struct nvkm_enum *er, *ee, *ec, *ea;
-	struct nvkm_engine *engine = NULL;
-	struct nvkm_fifo_chan *chan;
-	unsigned long flags;
-	const char *en = "";
-	char ct[8] = "HUB/";
-	int engn;
-
-	er = nvkm_enum_find(fifo->func->fault.reason, info->reason);
-	ee = nvkm_enum_find(fifo->func->fault.engine, info->engine);
-	if (info->hub) {
-		ec = nvkm_enum_find(fifo->func->fault.hubclient, info->client);
-	} else {
-		ec = nvkm_enum_find(fifo->func->fault.gpcclient, info->client);
-		snprintf(ct, sizeof(ct), "GPC%d/", info->gpc);
-	}
-	ea = nvkm_enum_find(fifo->func->fault.access, info->access);
-
-	if (ee && ee->data2) {
-		switch (ee->data2) {
-		case NVKM_SUBDEV_BAR:
-			nvkm_bar_bar1_reset(device);
-			break;
-		case NVKM_SUBDEV_INSTMEM:
-			nvkm_bar_bar2_reset(device);
-			break;
-		case NVKM_ENGINE_IFB:
-			nvkm_mask(device, 0x001718, 0x00000000, 0x00000000);
-			break;
-		default:
-			engine = nvkm_device_engine(device, ee->data2, 0);
-			break;
-		}
-	}
-
-	if (ee == NULL) {
-		struct nvkm_subdev *subdev = nvkm_top_fault(device, info->engine);
-		if (subdev) {
-			if (subdev->func == &nvkm_engine)
-				engine = container_of(subdev, typeof(*engine), subdev);
-			en = engine->subdev.name;
-		}
-	} else {
-		en = ee->name;
-	}
-
-	spin_lock_irqsave(&fifo->base.lock, flags);
-	chan = nvkm_fifo_chan_inst_locked(&fifo->base, info->inst);
-
-	nvkm_error(subdev,
-		   "fault %02x [%s] at %016llx engine %02x [%s] client %02x "
-		   "[%s%s] reason %02x [%s] on channel %d [%010llx %s]\n",
-		   info->access, ea ? ea->name : "", info->addr,
-		   info->engine, ee ? ee->name : en,
-		   info->client, ct, ec ? ec->name : "",
-		   info->reason, er ? er->name : "", chan ? chan->chid : -1,
-		   info->inst, chan ? chan->object.client->name : "unknown");
-
-	/* Kill the channel that caused the fault. */
-	if (chan)
-		tu102_fifo_recover_chan(&fifo->base, chan->chid);
-
-	/* Channel recovery will probably have already done this for the
-	 * correct engine(s), but just in case we can't find the channel
-	 * information...
-	 */
-	for (engn = 0; engn < fifo->engine_nr && engine; engn++) {
-		if (fifo->engine[engn].engine == engine) {
-			tu102_fifo_recover_engn(fifo, engn);
-			break;
-		}
-	}
-
-	spin_unlock_irqrestore(&fifo->base.lock, flags);
-}
-
 const struct nvkm_fifo_func_mmu_fault
 tu102_fifo_mmu_fault = {
-	.recover = tu102_fifo_fault,
+	.recover = gf100_fifo_mmu_fault_recover,
+	.access = gv100_fifo_mmu_fault_access,
+	.engine = tu102_fifo_mmu_fault_engine,
+	.reason = gv100_fifo_mmu_fault_reason,
+	.hubclient = gv100_fifo_mmu_fault_hubclient,
+	.gpcclient = gv100_fifo_mmu_fault_gpcclient,
 };
 
 static void
@@ -441,11 +360,6 @@ tu102_fifo = {
 	.fini = gk104_fifo_fini,
 	.intr = tu102_fifo_intr,
 	.mmu_fault = &tu102_fifo_mmu_fault,
-	.fault.access = gv100_fifo_fault_access,
-	.fault.engine = tu102_fifo_fault_engine,
-	.fault.reason = gv100_fifo_fault_reason,
-	.fault.hubclient = gv100_fifo_fault_hubclient,
-	.fault.gpcclient = gv100_fifo_fault_gpcclient,
 	.engine_id = gk104_fifo_engine_id,
 	.recover_chan = tu102_fifo_recover_chan,
 	.runlist = &tu102_fifo_runlist,