diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/fifo/tu102.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/fifo/tu102.c | 365 |
1 files changed, 363 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/tu102.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/tu102.c index 005f3e1729b9..e417044cc347 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/tu102.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/tu102.c @@ -24,7 +24,13 @@ #include "changk104.h" #include "user.h" +#include <core/client.h> #include <core/gpuobj.h> +#include <subdev/bar.h> +#include <subdev/fault.h> +#include <subdev/top.h> +#include <subdev/timer.h> +#include <engine/sw.h> #include <nvif/class.h> @@ -109,8 +115,363 @@ tu102_fifo = { .cgrp_force = true, }; +static void +tu102_fifo_recover_work(struct work_struct *w) +{ + struct gk104_fifo *fifo = container_of(w, typeof(*fifo), recover.work); + struct nvkm_device *device = fifo->base.engine.subdev.device; + struct nvkm_engine *engine; + unsigned long flags; + u32 engm, runm, todo; + int engn, runl; + + spin_lock_irqsave(&fifo->base.lock, flags); + runm = fifo->recover.runm; + engm = fifo->recover.engm; + fifo->recover.engm = 0; + fifo->recover.runm = 0; + spin_unlock_irqrestore(&fifo->base.lock, flags); + + nvkm_mask(device, 0x002630, runm, runm); + + for (todo = engm; engn = __ffs(todo), todo; todo &= ~BIT(engn)) { + if ((engine = fifo->engine[engn].engine)) { + nvkm_subdev_fini(&engine->subdev, false); + WARN_ON(nvkm_subdev_init(&engine->subdev)); + } + } + + for (todo = runm; runl = __ffs(todo), todo; todo &= ~BIT(runl)) + gk104_fifo_runlist_update(fifo, runl); + + nvkm_mask(device, 0x002630, runm, 0x00000000); +} + +static void tu102_fifo_recover_engn(struct gk104_fifo *fifo, int engn); + +static void +tu102_fifo_recover_runl(struct gk104_fifo *fifo, int runl) +{ + struct nvkm_subdev *subdev = &fifo->base.engine.subdev; + struct nvkm_device *device = subdev->device; + const u32 runm = BIT(runl); + + assert_spin_locked(&fifo->base.lock); + if (fifo->recover.runm & runm) + return; + fifo->recover.runm |= runm; + + /* Block runlist to prevent channel assignment(s) from changing. */ + nvkm_mask(device, 0x002630, runm, runm); + + /* Schedule recovery. */ + nvkm_warn(subdev, "runlist %d: scheduled for recovery\n", runl); + schedule_work(&fifo->recover.work); +} + +static struct gk104_fifo_chan * +tu102_fifo_recover_chid(struct gk104_fifo *fifo, int runl, int chid) +{ + struct gk104_fifo_chan *chan; + struct nvkm_fifo_cgrp *cgrp; + + list_for_each_entry(chan, &fifo->runlist[runl].chan, head) { + if (chan->base.chid == chid) { + list_del_init(&chan->head); + return chan; + } + } + + list_for_each_entry(cgrp, &fifo->runlist[runl].cgrp, head) { + if (cgrp->id == chid) { + chan = list_first_entry(&cgrp->chan, typeof(*chan), head); + list_del_init(&chan->head); + if (!--cgrp->chan_nr) + list_del_init(&cgrp->head); + return chan; + } + } + + return NULL; +} + +static void +tu102_fifo_recover_chan(struct nvkm_fifo *base, int chid) +{ + struct gk104_fifo *fifo = gk104_fifo(base); + struct nvkm_subdev *subdev = &fifo->base.engine.subdev; + struct nvkm_device *device = subdev->device; + const u32 stat = nvkm_rd32(device, 0x800004 + (chid * 0x08)); + const u32 runl = (stat & 0x000f0000) >> 16; + const bool used = (stat & 0x00000001); + unsigned long engn, engm = fifo->runlist[runl].engm; + struct gk104_fifo_chan *chan; + + assert_spin_locked(&fifo->base.lock); + if (!used) + return; + + /* Lookup SW state for channel, and mark it as dead. */ + chan = tu102_fifo_recover_chid(fifo, runl, chid); + if (chan) { + chan->killed = true; + nvkm_fifo_kevent(&fifo->base, chid); + } + + /* Disable channel. */ + nvkm_wr32(device, 0x800004 + (chid * 0x08), stat | 0x00000800); + nvkm_warn(subdev, "channel %d: killed\n", chid); + + /* Block channel assignments from changing during recovery. */ + tu102_fifo_recover_runl(fifo, runl); + + /* Schedule recovery for any engines the channel is on. */ + for_each_set_bit(engn, &engm, fifo->engine_nr) { + struct gk104_fifo_engine_status status; + + gk104_fifo_engine_status(fifo, engn, &status); + if (!status.chan || status.chan->id != chid) + continue; + tu102_fifo_recover_engn(fifo, engn); + } +} + +static void +tu102_fifo_recover_engn(struct gk104_fifo *fifo, int engn) +{ + struct nvkm_subdev *subdev = &fifo->base.engine.subdev; + struct nvkm_device *device = subdev->device; + const u32 runl = fifo->engine[engn].runl; + const u32 engm = BIT(engn); + struct gk104_fifo_engine_status status; + + assert_spin_locked(&fifo->base.lock); + if (fifo->recover.engm & engm) + return; + fifo->recover.engm |= engm; + + /* Block channel assignments from changing during recovery. */ + tu102_fifo_recover_runl(fifo, runl); + + /* Determine which channel (if any) is currently on the engine. */ + gk104_fifo_engine_status(fifo, engn, &status); + if (status.chan) { + /* The channel is not longer viable, kill it. */ + tu102_fifo_recover_chan(&fifo->base, status.chan->id); + } + + /* Preempt the runlist */ + nvkm_wr32(device, 0x2638, BIT(runl)); + + /* Schedule recovery. */ + nvkm_warn(subdev, "engine %d: scheduled for recovery\n", 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); +} + +static void +tu102_fifo_intr_ctxsw_timeout(struct gk104_fifo *fifo) +{ + struct nvkm_device *device = fifo->base.engine.subdev.device; + unsigned long flags, engm; + u32 engn; + + spin_lock_irqsave(&fifo->base.lock, flags); + + engm = nvkm_rd32(device, 0x2a30); + nvkm_wr32(device, 0x2a30, engm); + + for_each_set_bit(engn, &engm, 32) + tu102_fifo_recover_engn(fifo, engn); + + spin_unlock_irqrestore(&fifo->base.lock, flags); +} + +static void +tu102_fifo_intr_sched(struct gk104_fifo *fifo) +{ + struct nvkm_subdev *subdev = &fifo->base.engine.subdev; + struct nvkm_device *device = subdev->device; + u32 intr = nvkm_rd32(device, 0x00254c); + u32 code = intr & 0x000000ff; + + nvkm_error(subdev, "SCHED_ERROR %02x\n", code); +} + +static void +tu102_fifo_intr(struct nvkm_fifo *base) +{ + struct gk104_fifo *fifo = gk104_fifo(base); + struct nvkm_subdev *subdev = &fifo->base.engine.subdev; + struct nvkm_device *device = subdev->device; + u32 mask = nvkm_rd32(device, 0x002140); + u32 stat = nvkm_rd32(device, 0x002100) & mask; + + if (stat & 0x00000001) { + gk104_fifo_intr_bind(fifo); + nvkm_wr32(device, 0x002100, 0x00000001); + stat &= ~0x00000001; + } + + if (stat & 0x00000002) { + tu102_fifo_intr_ctxsw_timeout(fifo); + stat &= ~0x00000002; + } + + if (stat & 0x00000100) { + tu102_fifo_intr_sched(fifo); + nvkm_wr32(device, 0x002100, 0x00000100); + stat &= ~0x00000100; + } + + if (stat & 0x00010000) { + gk104_fifo_intr_chsw(fifo); + nvkm_wr32(device, 0x002100, 0x00010000); + stat &= ~0x00010000; + } + + if (stat & 0x20000000) { + u32 mask = nvkm_rd32(device, 0x0025a0); + + while (mask) { + u32 unit = __ffs(mask); + + gk104_fifo_intr_pbdma_0(fifo, unit); + gk104_fifo_intr_pbdma_1(fifo, unit); + nvkm_wr32(device, 0x0025a0, (1 << unit)); + mask &= ~(1 << unit); + } + stat &= ~0x20000000; + } + + if (stat & 0x40000000) { + gk104_fifo_intr_runlist(fifo); + stat &= ~0x40000000; + } + + if (stat & 0x80000000) { + nvkm_wr32(device, 0x002100, 0x80000000); + gk104_fifo_intr_engine(fifo); + stat &= ~0x80000000; + } + + if (stat) { + nvkm_error(subdev, "INTR %08x\n", stat); + nvkm_mask(device, 0x002140, stat, 0x00000000); + nvkm_wr32(device, 0x002100, stat); + } +} + +static const struct nvkm_fifo_func +tu102_fifo_ = { + .dtor = gk104_fifo_dtor, + .oneinit = gk104_fifo_oneinit, + .info = gk104_fifo_info, + .init = gk104_fifo_init, + .fini = gk104_fifo_fini, + .intr = tu102_fifo_intr, + .fault = tu102_fifo_fault, + .engine_id = gk104_fifo_engine_id, + .id_engine = gk104_fifo_id_engine, + .uevent_init = gk104_fifo_uevent_init, + .uevent_fini = gk104_fifo_uevent_fini, + .recover_chan = tu102_fifo_recover_chan, + .class_get = gk104_fifo_class_get, + .class_new = gk104_fifo_class_new, +}; + int -tu102_fifo_new(struct nvkm_device *device, int index, struct nvkm_fifo **pfifo) +tu102_fifo_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, + struct nvkm_fifo **pfifo) { - return gk104_fifo_new_(&tu102_fifo, device, index, 4096, pfifo); + struct gk104_fifo *fifo; + + if (!(fifo = kzalloc(sizeof(*fifo), GFP_KERNEL))) + return -ENOMEM; + fifo->func = &tu102_fifo; + INIT_WORK(&fifo->recover.work, tu102_fifo_recover_work); + *pfifo = &fifo->base; + + return nvkm_fifo_ctor(&tu102_fifo_, device, type, inst, 4096, &fifo->base); } |