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path: root/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c415
1 files changed, 415 insertions, 0 deletions
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 000000000000..dc6d4678f228
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c
@@ -0,0 +1,415 @@
+/*
+ * 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 <core/client.h>
+#include <core/gpuobj.h>
+#include <core/oproxy.h>
+#include <subdev/mmu.h>
+#include <engine/dma.h>
+
+struct nvkm_fifo_chan_object {
+ struct nvkm_oproxy oproxy;
+ struct nvkm_fifo_chan *chan;
+ int hash;
+};
+
+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 = &chan->engn[engine->subdev.index];
+ const char *name = nvkm_subdev_name[engine->subdev.index];
+ 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 = &chan->engn[engine->subdev.index];
+ const char *name = nvkm_subdev_name[engine->subdev.index];
+ 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 = &chan->engn[engine->subdev.index];
+
+ 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->vm)
+ atomic_dec(&chan->vm->engref[engine->subdev.index]);
+ }
+}
+
+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 = &chan->engn[engine->subdev.index];
+ 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->vm)
+ atomic_inc(&chan->vm->engref[engine->subdev.index]);
+
+ 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_device *device = fifo->engine.subdev.device;
+ struct nvkm_engine *engine;
+ u64 mask = chan->engines;
+ int ret, i, c;
+
+ for (; c = 0, i = __ffs64(mask), mask; mask &= ~(1ULL << i)) {
+ if (!(engine = nvkm_device_engine(device, i)))
+ 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, u64 *addr, u32 *size)
+{
+ struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object);
+ *addr = chan->addr;
+ *size = chan->size;
+ return 0;
+}
+
+static int
+nvkm_fifo_chan_rd32(struct nvkm_object *object, u64 addr, u32 *data)
+{
+ struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object);
+ if (unlikely(!chan->user)) {
+ chan->user = ioremap(chan->addr, chan->size);
+ if (!chan->user)
+ return -ENOMEM;
+ }
+ if (unlikely(addr + 4 > chan->size))
+ return -EINVAL;
+ *data = ioread32_native(chan->user + addr);
+ return 0;
+}
+
+static int
+nvkm_fifo_chan_wr32(struct nvkm_object *object, u64 addr, u32 data)
+{
+ struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object);
+ if (unlikely(!chan->user)) {
+ chan->user = ioremap(chan->addr, chan->size);
+ if (!chan->user)
+ return -ENOMEM;
+ }
+ if (unlikely(addr + 4 > chan->size))
+ return -EINVAL;
+ iowrite32_native(data, chan->user + addr);
+ 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->user)
+ iounmap(chan->user);
+
+ nvkm_vm_ref(NULL, &chan->vm, NULL);
+
+ 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,
+ .rd32 = nvkm_fifo_chan_rd32,
+ .wr32 = nvkm_fifo_chan_wr32,
+ .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 vm, u64 push, u64 engines, 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_mmu *mmu = device->mmu;
+ 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->engines = engines;
+ 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_dma_search(device->dma, oclass->client, push);
+ if (!dmaobj)
+ return -ENOENT;
+
+ ret = nvkm_object_bind(&dmaobj->object, chan->inst, -16,
+ &chan->push);
+ if (ret)
+ return ret;
+ }
+
+ /* channel address space */
+ if (!vm && mmu) {
+ if (!client->vm || client->vm->mmu == mmu) {
+ ret = nvkm_vm_ref(client->vm, &chan->vm, NULL);
+ if (ret)
+ return ret;
+ } else {
+ return -EINVAL;
+ }
+ } else {
+ return -ENOENT;
+ }
+
+ /* 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;
+
+ nvkm_event_send(&fifo->cevent, 1, 0, NULL, 0);
+ return 0;
+}