1 files changed, 357 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
new file mode 100644
index 000000000..58b8df75f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c
@@ -0,0 +1,357 @@
+/*
+ * 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 "priv.h"
+#include "chan.h"
+
+#include <core/client.h>
+#include <core/gpuobj.h>
+#include <core/notify.h>
+#include <subdev/mc.h>
+
+#include <nvif/event.h>
+#include <nvif/cl0080.h>
+#include <nvif/unpack.h>
+
+void
+nvkm_fifo_recover_chan(struct nvkm_fifo *fifo, int chid)
+{
+	unsigned long flags;
+	if (WARN_ON(!fifo->func->recover_chan))
+		return;
+	spin_lock_irqsave(&fifo->lock, flags);
+	fifo->func->recover_chan(fifo, chid);
+	spin_unlock_irqrestore(&fifo->lock, flags);
+}
+
+void
+nvkm_fifo_pause(struct nvkm_fifo *fifo, unsigned long *flags)
+{
+	return fifo->func->pause(fifo, flags);
+}
+
+void
+nvkm_fifo_start(struct nvkm_fifo *fifo, unsigned long *flags)
+{
+	return fifo->func->start(fifo, flags);
+}
+
+void
+nvkm_fifo_fault(struct nvkm_fifo *fifo, struct nvkm_fault_data *info)
+{
+	return fifo->func->fault(fifo, info);
+}
+
+void
+nvkm_fifo_chan_put(struct nvkm_fifo *fifo, unsigned long flags,
+		   struct nvkm_fifo_chan **pchan)
+{
+	struct nvkm_fifo_chan *chan = *pchan;
+	if (likely(chan)) {
+		*pchan = NULL;
+		spin_unlock_irqrestore(&fifo->lock, flags);
+	}
+}
+
+struct nvkm_fifo_chan *
+nvkm_fifo_chan_inst_locked(struct nvkm_fifo *fifo, u64 inst)
+{
+	struct nvkm_fifo_chan *chan;
+	list_for_each_entry(chan, &fifo->chan, head) {
+		if (chan->inst->addr == inst) {
+			list_del(&chan->head);
+			list_add(&chan->head, &fifo->chan);
+			return chan;
+		}
+	}
+	return NULL;
+}
+
+struct nvkm_fifo_chan *
+nvkm_fifo_chan_inst(struct nvkm_fifo *fifo, u64 inst, unsigned long *rflags)
+{
+	struct nvkm_fifo_chan *chan;
+	unsigned long flags;
+	spin_lock_irqsave(&fifo->lock, flags);
+	if ((chan = nvkm_fifo_chan_inst_locked(fifo, inst))) {
+		*rflags = flags;
+		return chan;
+	}
+	spin_unlock_irqrestore(&fifo->lock, flags);
+	return NULL;
+}
+
+struct nvkm_fifo_chan *
+nvkm_fifo_chan_chid(struct nvkm_fifo *fifo, int chid, unsigned long *rflags)
+{
+	struct nvkm_fifo_chan *chan;
+	unsigned long flags;
+	spin_lock_irqsave(&fifo->lock, flags);
+	list_for_each_entry(chan, &fifo->chan, head) {
+		if (chan->chid == chid) {
+			list_del(&chan->head);
+			list_add(&chan->head, &fifo->chan);
+			*rflags = flags;
+			return chan;
+		}
+	}
+	spin_unlock_irqrestore(&fifo->lock, flags);
+	return NULL;
+}
+
+void
+nvkm_fifo_kevent(struct nvkm_fifo *fifo, int chid)
+{
+	nvkm_event_send(&fifo->kevent, 1, chid, NULL, 0);
+}
+
+static int
+nvkm_fifo_kevent_ctor(struct nvkm_object *object, void *data, u32 size,
+		      struct nvkm_notify *notify)
+{
+	struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object);
+	if (size == 0) {
+		notify->size  = 0;
+		notify->types = 1;
+		notify->index = chan->chid;
+		return 0;
+	}
+	return -ENOSYS;
+}
+
+static const struct nvkm_event_func
+nvkm_fifo_kevent_func = {
+	.ctor = nvkm_fifo_kevent_ctor,
+};
+
+static void
+nvkm_fifo_uevent_fini(struct nvkm_event *event, int type, int index)
+{
+	struct nvkm_fifo *fifo = container_of(event, typeof(*fifo), uevent);
+	fifo->func->uevent_fini(fifo);
+}
+
+static void
+nvkm_fifo_uevent_init(struct nvkm_event *event, int type, int index)
+{
+	struct nvkm_fifo *fifo = container_of(event, typeof(*fifo), uevent);
+	fifo->func->uevent_init(fifo);
+}
+
+static int
+nvkm_fifo_uevent_ctor(struct nvkm_object *object, void *data, u32 size,
+		      struct nvkm_notify *notify)
+{
+	union {
+		struct nvif_notify_uevent_req none;
+	} *req = data;
+	int ret = -ENOSYS;
+
+	if (!(ret = nvif_unvers(ret, &data, &size, req->none))) {
+		notify->size  = sizeof(struct nvif_notify_uevent_rep);
+		notify->types = 1;
+		notify->index = 0;
+	}
+
+	return ret;
+}
+
+static const struct nvkm_event_func
+nvkm_fifo_uevent_func = {
+	.ctor = nvkm_fifo_uevent_ctor,
+	.init = nvkm_fifo_uevent_init,
+	.fini = nvkm_fifo_uevent_fini,
+};
+
+void
+nvkm_fifo_uevent(struct nvkm_fifo *fifo)
+{
+	struct nvif_notify_uevent_rep rep = {
+	};
+	nvkm_event_send(&fifo->uevent, 1, 0, &rep, sizeof(rep));
+}
+
+static int
+nvkm_fifo_class_new_(struct nvkm_device *device,
+		     const struct nvkm_oclass *oclass, void *data, u32 size,
+		     struct nvkm_object **pobject)
+{
+	struct nvkm_fifo *fifo = nvkm_fifo(oclass->engine);
+	return fifo->func->class_new(fifo, oclass, data, size, pobject);
+}
+
+static const struct nvkm_device_oclass
+nvkm_fifo_class_ = {
+	.ctor = nvkm_fifo_class_new_,
+};
+
+static int
+nvkm_fifo_class_new(struct nvkm_device *device,
+		    const struct nvkm_oclass *oclass, void *data, u32 size,
+		    struct nvkm_object **pobject)
+{
+	const struct nvkm_fifo_chan_oclass *sclass = oclass->engn;
+	struct nvkm_fifo *fifo = nvkm_fifo(oclass->engine);
+	return sclass->ctor(fifo, oclass, data, size, pobject);
+}
+
+static const struct nvkm_device_oclass
+nvkm_fifo_class = {
+	.ctor = nvkm_fifo_class_new,
+};
+
+static int
+nvkm_fifo_class_get(struct nvkm_oclass *oclass, int index,
+		    const struct nvkm_device_oclass **class)
+{
+	struct nvkm_fifo *fifo = nvkm_fifo(oclass->engine);
+	const struct nvkm_fifo_chan_oclass *sclass;
+	int c = 0;
+
+	if (fifo->func->class_get) {
+		int ret = fifo->func->class_get(fifo, index, oclass);
+		if (ret == 0)
+			*class = &nvkm_fifo_class_;
+		return ret;
+	}
+
+	while ((sclass = fifo->func->chan[c])) {
+		if (c++ == index) {
+			oclass->base = sclass->base;
+			oclass->engn = sclass;
+			*class = &nvkm_fifo_class;
+			return 0;
+		}
+	}
+
+	return c;
+}
+
+static void
+nvkm_fifo_intr(struct nvkm_engine *engine)
+{
+	struct nvkm_fifo *fifo = nvkm_fifo(engine);
+	fifo->func->intr(fifo);
+}
+
+static int
+nvkm_fifo_fini(struct nvkm_engine *engine, bool suspend)
+{
+	struct nvkm_fifo *fifo = nvkm_fifo(engine);
+	if (fifo->func->fini)
+		fifo->func->fini(fifo);
+	return 0;
+}
+
+static int
+nvkm_fifo_info(struct nvkm_engine *engine, u64 mthd, u64 *data)
+{
+	struct nvkm_fifo *fifo = nvkm_fifo(engine);
+	switch (mthd) {
+	case NV_DEVICE_HOST_CHANNELS: *data = fifo->nr; return 0;
+	default:
+		if (fifo->func->info)
+			return fifo->func->info(fifo, mthd, data);
+		break;
+	}
+	return -ENOSYS;
+}
+
+static int
+nvkm_fifo_oneinit(struct nvkm_engine *engine)
+{
+	struct nvkm_fifo *fifo = nvkm_fifo(engine);
+	if (fifo->func->oneinit)
+		return fifo->func->oneinit(fifo);
+	return 0;
+}
+
+static void
+nvkm_fifo_preinit(struct nvkm_engine *engine)
+{
+	nvkm_mc_reset(engine->subdev.device, NVKM_ENGINE_FIFO, 0);
+}
+
+static int
+nvkm_fifo_init(struct nvkm_engine *engine)
+{
+	struct nvkm_fifo *fifo = nvkm_fifo(engine);
+	fifo->func->init(fifo);
+	return 0;
+}
+
+static void *
+nvkm_fifo_dtor(struct nvkm_engine *engine)
+{
+	struct nvkm_fifo *fifo = nvkm_fifo(engine);
+	void *data = fifo;
+	if (fifo->func->dtor)
+		data = fifo->func->dtor(fifo);
+	nvkm_event_fini(&fifo->kevent);
+	nvkm_event_fini(&fifo->uevent);
+	mutex_destroy(&fifo->mutex);
+	return data;
+}
+
+static const struct nvkm_engine_func
+nvkm_fifo = {
+	.dtor = nvkm_fifo_dtor,
+	.preinit = nvkm_fifo_preinit,
+	.oneinit = nvkm_fifo_oneinit,
+	.info = nvkm_fifo_info,
+	.init = nvkm_fifo_init,
+	.fini = nvkm_fifo_fini,
+	.intr = nvkm_fifo_intr,
+	.base.sclass = nvkm_fifo_class_get,
+};
+
+int
+nvkm_fifo_ctor(const struct nvkm_fifo_func *func, struct nvkm_device *device,
+	       enum nvkm_subdev_type type, int inst, int nr, struct nvkm_fifo *fifo)
+{
+	int ret;
+
+	fifo->func = func;
+	INIT_LIST_HEAD(&fifo->chan);
+	spin_lock_init(&fifo->lock);
+	mutex_init(&fifo->mutex);
+
+	if (WARN_ON(fifo->nr > NVKM_FIFO_CHID_NR))
+		fifo->nr = NVKM_FIFO_CHID_NR;
+	else
+		fifo->nr = nr;
+	bitmap_clear(fifo->mask, 0, fifo->nr);
+
+	ret = nvkm_engine_ctor(&nvkm_fifo, device, type, inst, true, &fifo->engine);
+	if (ret)
+		return ret;
+
+	if (func->uevent_init) {
+		ret = nvkm_event_init(&nvkm_fifo_uevent_func, 1, 1,
+				      &fifo->uevent);
+		if (ret)
+			return ret;
+	}
+
+	return nvkm_event_init(&nvkm_fifo_kevent_func, 1, nr, &fifo->kevent);
+}