From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c | 393 ++++++++++++++++++++++++ 1 file changed, 393 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c new file mode 100644 index 000000000..2e7f32ceb --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c @@ -0,0 +1,393 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ +#include "chan.h" + +#include +#include +#include +#include +#include + +struct nvkm_fifo_chan_object { + struct nvkm_oproxy oproxy; + struct nvkm_fifo_chan *chan; + int hash; +}; + +static struct nvkm_fifo_engn * +nvkm_fifo_chan_engn(struct nvkm_fifo_chan *chan, struct nvkm_engine *engine) +{ + int engi = chan->fifo->func->engine_id(chan->fifo, engine); + if (engi >= 0) + return &chan->engn[engi]; + return NULL; +} + +static int +nvkm_fifo_chan_child_fini(struct nvkm_oproxy *base, bool suspend) +{ + struct nvkm_fifo_chan_object *object = + container_of(base, typeof(*object), oproxy); + struct nvkm_engine *engine = object->oproxy.object->engine; + struct nvkm_fifo_chan *chan = object->chan; + struct nvkm_fifo_engn *engn = nvkm_fifo_chan_engn(chan, engine); + const char *name = engine->subdev.name; + int ret = 0; + + if (--engn->usecount) + return 0; + + if (chan->func->engine_fini) { + ret = chan->func->engine_fini(chan, engine, suspend); + if (ret) { + nvif_error(&chan->object, + "detach %s failed, %d\n", name, ret); + return ret; + } + } + + if (engn->object) { + ret = nvkm_object_fini(engn->object, suspend); + if (ret && suspend) + return ret; + } + + nvif_trace(&chan->object, "detached %s\n", name); + return ret; +} + +static int +nvkm_fifo_chan_child_init(struct nvkm_oproxy *base) +{ + struct nvkm_fifo_chan_object *object = + container_of(base, typeof(*object), oproxy); + struct nvkm_engine *engine = object->oproxy.object->engine; + struct nvkm_fifo_chan *chan = object->chan; + struct nvkm_fifo_engn *engn = nvkm_fifo_chan_engn(chan, engine); + const char *name = engine->subdev.name; + int ret; + + if (engn->usecount++) + return 0; + + if (engn->object) { + ret = nvkm_object_init(engn->object); + if (ret) + return ret; + } + + if (chan->func->engine_init) { + ret = chan->func->engine_init(chan, engine); + if (ret) { + nvif_error(&chan->object, + "attach %s failed, %d\n", name, ret); + return ret; + } + } + + nvif_trace(&chan->object, "attached %s\n", name); + return 0; +} + +static void +nvkm_fifo_chan_child_del(struct nvkm_oproxy *base) +{ + struct nvkm_fifo_chan_object *object = + container_of(base, typeof(*object), oproxy); + struct nvkm_engine *engine = object->oproxy.base.engine; + struct nvkm_fifo_chan *chan = object->chan; + struct nvkm_fifo_engn *engn = nvkm_fifo_chan_engn(chan, engine); + + if (chan->func->object_dtor) + chan->func->object_dtor(chan, object->hash); + + if (!--engn->refcount) { + if (chan->func->engine_dtor) + chan->func->engine_dtor(chan, engine); + nvkm_object_del(&engn->object); + if (chan->vmm) + atomic_dec(&chan->vmm->engref[engine->subdev.type]); + } +} + +static const struct nvkm_oproxy_func +nvkm_fifo_chan_child_func = { + .dtor[0] = nvkm_fifo_chan_child_del, + .init[0] = nvkm_fifo_chan_child_init, + .fini[0] = nvkm_fifo_chan_child_fini, +}; + +static int +nvkm_fifo_chan_child_new(const struct nvkm_oclass *oclass, void *data, u32 size, + struct nvkm_object **pobject) +{ + struct nvkm_engine *engine = oclass->engine; + struct nvkm_fifo_chan *chan = nvkm_fifo_chan(oclass->parent); + struct nvkm_fifo_engn *engn = nvkm_fifo_chan_engn(chan, engine); + struct nvkm_fifo_chan_object *object; + int ret = 0; + + if (!(object = kzalloc(sizeof(*object), GFP_KERNEL))) + return -ENOMEM; + nvkm_oproxy_ctor(&nvkm_fifo_chan_child_func, oclass, &object->oproxy); + object->chan = chan; + *pobject = &object->oproxy.base; + + if (!engn->refcount++) { + struct nvkm_oclass cclass = { + .client = oclass->client, + .engine = oclass->engine, + }; + + if (chan->vmm) + atomic_inc(&chan->vmm->engref[engine->subdev.type]); + + if (engine->func->fifo.cclass) { + ret = engine->func->fifo.cclass(chan, &cclass, + &engn->object); + } else + if (engine->func->cclass) { + ret = nvkm_object_new_(engine->func->cclass, &cclass, + NULL, 0, &engn->object); + } + if (ret) + return ret; + + if (chan->func->engine_ctor) { + ret = chan->func->engine_ctor(chan, oclass->engine, + engn->object); + if (ret) + return ret; + } + } + + ret = oclass->base.ctor(&(const struct nvkm_oclass) { + .base = oclass->base, + .engn = oclass->engn, + .handle = oclass->handle, + .object = oclass->object, + .client = oclass->client, + .parent = engn->object ? + engn->object : + oclass->parent, + .engine = engine, + }, data, size, &object->oproxy.object); + if (ret) + return ret; + + if (chan->func->object_ctor) { + object->hash = + chan->func->object_ctor(chan, object->oproxy.object); + if (object->hash < 0) + return object->hash; + } + + return 0; +} + +static int +nvkm_fifo_chan_child_get(struct nvkm_object *object, int index, + struct nvkm_oclass *oclass) +{ + struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object); + struct nvkm_fifo *fifo = chan->fifo; + struct nvkm_engine *engine; + u32 engm = chan->engm; + int engi, ret, c; + + for (; c = 0, engi = __ffs(engm), engm; engm &= ~(1ULL << engi)) { + if (!(engine = fifo->func->id_engine(fifo, engi))) + continue; + oclass->engine = engine; + oclass->base.oclass = 0; + + if (engine->func->fifo.sclass) { + ret = engine->func->fifo.sclass(oclass, index); + if (oclass->base.oclass) { + if (!oclass->base.ctor) + oclass->base.ctor = nvkm_object_new; + oclass->ctor = nvkm_fifo_chan_child_new; + return 0; + } + + index -= ret; + continue; + } + + while (engine->func->sclass[c].oclass) { + if (c++ == index) { + oclass->base = engine->func->sclass[index]; + if (!oclass->base.ctor) + oclass->base.ctor = nvkm_object_new; + oclass->ctor = nvkm_fifo_chan_child_new; + return 0; + } + } + index -= c; + } + + return -EINVAL; +} + +static int +nvkm_fifo_chan_ntfy(struct nvkm_object *object, u32 type, + struct nvkm_event **pevent) +{ + struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object); + if (chan->func->ntfy) + return chan->func->ntfy(chan, type, pevent); + return -ENODEV; +} + +static int +nvkm_fifo_chan_map(struct nvkm_object *object, void *argv, u32 argc, + enum nvkm_object_map *type, u64 *addr, u64 *size) +{ + struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object); + *type = NVKM_OBJECT_MAP_IO; + *addr = chan->addr; + *size = chan->size; + return 0; +} + +static int +nvkm_fifo_chan_fini(struct nvkm_object *object, bool suspend) +{ + struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object); + chan->func->fini(chan); + return 0; +} + +static int +nvkm_fifo_chan_init(struct nvkm_object *object) +{ + struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object); + chan->func->init(chan); + return 0; +} + +static void * +nvkm_fifo_chan_dtor(struct nvkm_object *object) +{ + struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object); + struct nvkm_fifo *fifo = chan->fifo; + void *data = chan->func->dtor(chan); + unsigned long flags; + + spin_lock_irqsave(&fifo->lock, flags); + if (!list_empty(&chan->head)) { + __clear_bit(chan->chid, fifo->mask); + list_del(&chan->head); + } + spin_unlock_irqrestore(&fifo->lock, flags); + + if (chan->vmm) { + nvkm_vmm_part(chan->vmm, chan->inst->memory); + nvkm_vmm_unref(&chan->vmm); + } + + nvkm_gpuobj_del(&chan->push); + nvkm_gpuobj_del(&chan->inst); + return data; +} + +static const struct nvkm_object_func +nvkm_fifo_chan_func = { + .dtor = nvkm_fifo_chan_dtor, + .init = nvkm_fifo_chan_init, + .fini = nvkm_fifo_chan_fini, + .ntfy = nvkm_fifo_chan_ntfy, + .map = nvkm_fifo_chan_map, + .sclass = nvkm_fifo_chan_child_get, +}; + +int +nvkm_fifo_chan_ctor(const struct nvkm_fifo_chan_func *func, + struct nvkm_fifo *fifo, u32 size, u32 align, bool zero, + u64 hvmm, u64 push, u32 engm, int bar, u32 base, + u32 user, const struct nvkm_oclass *oclass, + struct nvkm_fifo_chan *chan) +{ + struct nvkm_client *client = oclass->client; + struct nvkm_device *device = fifo->engine.subdev.device; + struct nvkm_dmaobj *dmaobj; + unsigned long flags; + int ret; + + nvkm_object_ctor(&nvkm_fifo_chan_func, oclass, &chan->object); + chan->func = func; + chan->fifo = fifo; + chan->engm = engm; + INIT_LIST_HEAD(&chan->head); + + /* instance memory */ + ret = nvkm_gpuobj_new(device, size, align, zero, NULL, &chan->inst); + if (ret) + return ret; + + /* allocate push buffer ctxdma instance */ + if (push) { + dmaobj = nvkm_dmaobj_search(client, push); + if (IS_ERR(dmaobj)) + return PTR_ERR(dmaobj); + + ret = nvkm_object_bind(&dmaobj->object, chan->inst, -16, + &chan->push); + if (ret) + return ret; + } + + /* channel address space */ + if (hvmm) { + struct nvkm_vmm *vmm = nvkm_uvmm_search(client, hvmm); + if (IS_ERR(vmm)) + return PTR_ERR(vmm); + + if (vmm->mmu != device->mmu) + return -EINVAL; + + ret = nvkm_vmm_join(vmm, chan->inst->memory); + if (ret) + return ret; + + chan->vmm = nvkm_vmm_ref(vmm); + } + + /* allocate channel id */ + spin_lock_irqsave(&fifo->lock, flags); + chan->chid = find_first_zero_bit(fifo->mask, NVKM_FIFO_CHID_NR); + if (chan->chid >= NVKM_FIFO_CHID_NR) { + spin_unlock_irqrestore(&fifo->lock, flags); + return -ENOSPC; + } + list_add(&chan->head, &fifo->chan); + __set_bit(chan->chid, fifo->mask); + spin_unlock_irqrestore(&fifo->lock, flags); + + /* determine address of this channel's user registers */ + chan->addr = device->func->resource_addr(device, bar) + + base + user * chan->chid; + chan->size = user; + return 0; +} -- cgit v1.2.3