drm/nouveau/fifo: split user classes out from engine implementations

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 282 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c
new file mode 100644
index 000000000000..8cc87103a369
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/dmanv04.c
@@ -0,0 +1,282 @@
+/*
+ * 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 "channv04.h"
+#include "regsnv04.h"
+
+#include <core/client.h>
+#include <core/ramht.h>
+#include <subdev/instmem.h>
+
+#include <nvif/class.h>
+#include <nvif/unpack.h>
+
+int
+nv04_fifo_context_attach(struct nvkm_object *parent,
+			 struct nvkm_object *object)
+{
+	nv_engctx(object)->addr = nvkm_fifo_chan(parent)->chid;
+	return 0;
+}
+
+void
+nv04_fifo_object_detach(struct nvkm_object *parent, int cookie)
+{
+	struct nv04_fifo *fifo = (void *)parent->engine;
+	struct nvkm_instmem *imem = fifo->base.engine.subdev.device->imem;
+	mutex_lock(&nv_subdev(fifo)->mutex);
+	nvkm_ramht_remove(imem->ramht, cookie);
+	mutex_unlock(&nv_subdev(fifo)->mutex);
+}
+
+int
+nv04_fifo_object_attach(struct nvkm_object *parent,
+			struct nvkm_object *object, u32 handle)
+{
+	struct nv04_fifo *fifo = (void *)parent->engine;
+	struct nv04_fifo_chan *chan = (void *)parent;
+	struct nvkm_instmem *imem = fifo->base.engine.subdev.device->imem;
+	u32 context, chid = chan->base.chid;
+	int ret;
+
+	if (nv_iclass(object, NV_GPUOBJ_CLASS))
+		context = nv_gpuobj(object)->addr >> 4;
+	else
+		context = 0x00000004; /* just non-zero */
+
+	if (object->engine) {
+		switch (nv_engidx(object->engine)) {
+		case NVDEV_ENGINE_DMAOBJ:
+		case NVDEV_ENGINE_SW:
+			context |= 0x00000000;
+			break;
+		case NVDEV_ENGINE_GR:
+			context |= 0x00010000;
+			break;
+		case NVDEV_ENGINE_MPEG:
+			context |= 0x00020000;
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	context |= 0x80000000; /* valid */
+	context |= chid << 24;
+
+	mutex_lock(&nv_subdev(fifo)->mutex);
+	ret = nvkm_ramht_insert(imem->ramht, NULL, chid, 0, handle, context);
+	mutex_unlock(&nv_subdev(fifo)->mutex);
+	return ret;
+}
+
+int
+nv04_fifo_chan_fini(struct nvkm_object *object, bool suspend)
+{
+	struct nv04_fifo *fifo = (void *)object->engine;
+	struct nv04_fifo_chan *chan = (void *)object;
+	struct nvkm_device *device = fifo->base.engine.subdev.device;
+	struct nvkm_memory *fctx = device->imem->ramfc;
+	struct ramfc_desc *c;
+	unsigned long flags;
+	u32 data = chan->ramfc;
+	u32 chid;
+
+	/* prevent fifo context switches */
+	spin_lock_irqsave(&fifo->base.lock, flags);
+	nvkm_wr32(device, NV03_PFIFO_CACHES, 0);
+
+	/* if this channel is active, replace it with a null context */
+	chid = nvkm_rd32(device, NV03_PFIFO_CACHE1_PUSH1) & fifo->base.max;
+	if (chid == chan->base.chid) {
+		nvkm_mask(device, NV04_PFIFO_CACHE1_DMA_PUSH, 0x00000001, 0);
+		nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH0, 0);
+		nvkm_mask(device, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0);
+
+		c = fifo->ramfc_desc;
+		do {
+			u32 rm = ((1ULL << c->bits) - 1) << c->regs;
+			u32 cm = ((1ULL << c->bits) - 1) << c->ctxs;
+			u32 rv = (nvkm_rd32(device, c->regp) &  rm) >> c->regs;
+			u32 cv = (nvkm_ro32(fctx, c->ctxp + data) & ~cm);
+			nvkm_wo32(fctx, c->ctxp + data, cv | (rv << c->ctxs));
+		} while ((++c)->bits);
+
+		c = fifo->ramfc_desc;
+		do {
+			nvkm_wr32(device, c->regp, 0x00000000);
+		} while ((++c)->bits);
+
+		nvkm_wr32(device, NV03_PFIFO_CACHE1_GET, 0);
+		nvkm_wr32(device, NV03_PFIFO_CACHE1_PUT, 0);
+		nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH1, fifo->base.max);
+		nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH0, 1);
+		nvkm_wr32(device, NV04_PFIFO_CACHE1_PULL0, 1);
+	}
+
+	/* restore normal operation, after disabling dma mode */
+	nvkm_mask(device, NV04_PFIFO_MODE, 1 << chan->base.chid, 0);
+	nvkm_wr32(device, NV03_PFIFO_CACHES, 1);
+	spin_unlock_irqrestore(&fifo->base.lock, flags);
+
+	return nvkm_fifo_channel_fini(&chan->base, suspend);
+}
+
+int
+nv04_fifo_chan_init(struct nvkm_object *object)
+{
+	struct nv04_fifo *fifo = (void *)object->engine;
+	struct nv04_fifo_chan *chan = (void *)object;
+	struct nvkm_device *device = fifo->base.engine.subdev.device;
+	u32 mask = 1 << chan->base.chid;
+	unsigned long flags;
+	int ret;
+
+	ret = nvkm_fifo_channel_init(&chan->base);
+	if (ret)
+		return ret;
+
+	spin_lock_irqsave(&fifo->base.lock, flags);
+	nvkm_mask(device, NV04_PFIFO_MODE, mask, mask);
+	spin_unlock_irqrestore(&fifo->base.lock, flags);
+	return 0;
+}
+
+void
+nv04_fifo_chan_dtor(struct nvkm_object *object)
+{
+	struct nv04_fifo *fifo = (void *)object->engine;
+	struct nv04_fifo_chan *chan = (void *)object;
+	struct nvkm_instmem *imem = fifo->base.engine.subdev.device->imem;
+	struct ramfc_desc *c = fifo->ramfc_desc;
+
+	nvkm_kmap(imem->ramfc);
+	do {
+		nvkm_wo32(imem->ramfc, chan->ramfc + c->ctxp, 0x00000000);
+	} while ((++c)->bits);
+	nvkm_done(imem->ramfc);
+
+	nvkm_fifo_channel_destroy(&chan->base);
+}
+
+static int
+nv04_fifo_chan_ctor(struct nvkm_object *parent,
+		    struct nvkm_object *engine,
+		    struct nvkm_oclass *oclass, void *data, u32 size,
+		    struct nvkm_object **pobject)
+{
+	union {
+		struct nv03_channel_dma_v0 v0;
+	} *args = data;
+	struct nv04_fifo *fifo = (void *)engine;
+	struct nvkm_instmem *imem = fifo->base.engine.subdev.device->imem;
+	struct nv04_fifo_chan *chan;
+	int ret;
+
+	nvif_ioctl(parent, "create channel dma size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, false)) {
+		nvif_ioctl(parent, "create channel dma vers %d pushbuf %llx "
+				   "offset %08x\n", args->v0.version,
+			   args->v0.pushbuf, args->v0.offset);
+	} else
+		return ret;
+
+	ret = nvkm_fifo_channel_create(parent, engine, oclass, 0, 0x800000,
+				       0x10000, args->v0.pushbuf,
+				       (1ULL << NVDEV_ENGINE_DMAOBJ) |
+				       (1ULL << NVDEV_ENGINE_SW) |
+				       (1ULL << NVDEV_ENGINE_GR), &chan);
+	*pobject = nv_object(chan);
+	if (ret)
+		return ret;
+
+	args->v0.chid = chan->base.chid;
+
+	nv_parent(chan)->object_attach = nv04_fifo_object_attach;
+	nv_parent(chan)->object_detach = nv04_fifo_object_detach;
+	nv_parent(chan)->context_attach = nv04_fifo_context_attach;
+	chan->ramfc = chan->base.chid * 32;
+
+	nvkm_kmap(imem->ramfc);
+	nvkm_wo32(imem->ramfc, chan->ramfc + 0x00, args->v0.offset);
+	nvkm_wo32(imem->ramfc, chan->ramfc + 0x04, args->v0.offset);
+	nvkm_wo32(imem->ramfc, chan->ramfc + 0x08, chan->base.pushgpu->addr >> 4);
+	nvkm_wo32(imem->ramfc, chan->ramfc + 0x10,
+			       NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
+			       NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
+#ifdef __BIG_ENDIAN
+			       NV_PFIFO_CACHE1_BIG_ENDIAN |
+#endif
+			       NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8);
+	nvkm_done(imem->ramfc);
+	return 0;
+}
+
+static struct nvkm_ofuncs
+nv04_fifo_ofuncs = {
+	.ctor = nv04_fifo_chan_ctor,
+	.dtor = nv04_fifo_chan_dtor,
+	.init = nv04_fifo_chan_init,
+	.fini = nv04_fifo_chan_fini,
+	.map  = _nvkm_fifo_channel_map,
+	.rd32 = _nvkm_fifo_channel_rd32,
+	.wr32 = _nvkm_fifo_channel_wr32,
+	.ntfy = _nvkm_fifo_channel_ntfy
+};
+
+struct nvkm_oclass
+nv04_fifo_sclass[] = {
+	{ NV03_CHANNEL_DMA, &nv04_fifo_ofuncs },
+	{}
+};
+
+int
+nv04_fifo_context_ctor(struct nvkm_object *parent,
+		       struct nvkm_object *engine,
+		       struct nvkm_oclass *oclass, void *data, u32 size,
+		       struct nvkm_object **pobject)
+{
+	struct nv04_fifo_base *base;
+	int ret;
+
+	ret = nvkm_fifo_context_create(parent, engine, oclass, NULL, 0x1000,
+				       0x1000, NVOBJ_FLAG_HEAP, &base);
+	*pobject = nv_object(base);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+struct nvkm_oclass
+nv04_fifo_cclass = {
+	.handle = NV_ENGCTX(FIFO, 0x04),
+	.ofuncs = &(struct nvkm_ofuncs) {
+		.ctor = nv04_fifo_context_ctor,
+		.dtor = _nvkm_fifo_context_dtor,
+		.init = _nvkm_fifo_context_init,
+		.fini = _nvkm_fifo_context_fini,
+		.rd32 = _nvkm_fifo_context_rd32,
+		.wr32 = _nvkm_fifo_context_wr32,
+	},
+};