1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.c
new file mode 100644
index 000000000000..43c17d07e96e
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.c
@@ -0,0 +1,163 @@
+/*
+ * 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 "dmacnv50.h"
+#include "rootnv50.h"
+
+#include <core/client.h>
+#include <core/handle.h>
+#include <core/ramht.h>
+#include <subdev/fb.h>
+#include <subdev/timer.h>
+#include <engine/dma.h>
+
+void
+nv50_disp_dmac_object_detach(struct nvkm_object *parent, int cookie)
+{
+	struct nv50_disp_root *root = (void *)parent->parent;
+	nvkm_ramht_remove(root->ramht, cookie);
+}
+
+int
+nv50_disp_dmac_object_attach(struct nvkm_object *parent,
+			     struct nvkm_object *object, u32 name)
+{
+	struct nv50_disp_root *root = (void *)parent->parent;
+	struct nv50_disp_chan *chan = (void *)parent;
+	u32 addr = nv_gpuobj(object)->node->offset;
+	u32 chid = chan->chid;
+	u32 data = (chid << 28) | (addr << 10) | chid;
+	return nvkm_ramht_insert(root->ramht, NULL, chid, 0, name, data);
+}
+
+int
+nv50_disp_dmac_fini(struct nvkm_object *object, bool suspend)
+{
+	struct nv50_disp *disp = (void *)object->engine;
+	struct nv50_disp_dmac *dmac = (void *)object;
+	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	int chid = dmac->base.chid;
+
+	/* deactivate channel */
+	nvkm_mask(device, 0x610200 + (chid * 0x0010), 0x00001010, 0x00001000);
+	nvkm_mask(device, 0x610200 + (chid * 0x0010), 0x00000003, 0x00000000);
+	if (nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x610200 + (chid * 0x10)) & 0x001e0000))
+			break;
+	) < 0) {
+		nvkm_error(subdev, "ch %d fini timeout, %08x\n", chid,
+			   nvkm_rd32(device, 0x610200 + (chid * 0x10)));
+		if (suspend)
+			return -EBUSY;
+	}
+
+	/* disable error reporting and completion notifications */
+	nvkm_mask(device, 0x610028, 0x00010001 << chid, 0x00000000 << chid);
+
+	return nv50_disp_chan_fini(&dmac->base, suspend);
+}
+
+int
+nv50_disp_dmac_init(struct nvkm_object *object)
+{
+	struct nv50_disp *disp = (void *)object->engine;
+	struct nv50_disp_dmac *dmac = (void *)object;
+	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
+	struct nvkm_device *device = subdev->device;
+	int chid = dmac->base.chid;
+	int ret;
+
+	ret = nv50_disp_chan_init(&dmac->base);
+	if (ret)
+		return ret;
+
+	/* enable error reporting */
+	nvkm_mask(device, 0x610028, 0x00010000 << chid, 0x00010000 << chid);
+
+	/* initialise channel for dma command submission */
+	nvkm_wr32(device, 0x610204 + (chid * 0x0010), dmac->push);
+	nvkm_wr32(device, 0x610208 + (chid * 0x0010), 0x00010000);
+	nvkm_wr32(device, 0x61020c + (chid * 0x0010), chid);
+	nvkm_mask(device, 0x610200 + (chid * 0x0010), 0x00000010, 0x00000010);
+	nvkm_wr32(device, 0x640000 + (chid * 0x1000), 0x00000000);
+	nvkm_wr32(device, 0x610200 + (chid * 0x0010), 0x00000013);
+
+	/* wait for it to go inactive */
+	if (nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x610200 + (chid * 0x10)) & 0x80000000))
+			break;
+	) < 0) {
+		nvkm_error(subdev, "ch %d init timeout, %08x\n", chid,
+			   nvkm_rd32(device, 0x610200 + (chid * 0x10)));
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+void
+nv50_disp_dmac_dtor(struct nvkm_object *object)
+{
+	struct nv50_disp_dmac *dmac = (void *)object;
+	nv50_disp_chan_destroy(&dmac->base);
+}
+
+int
+nv50_disp_dmac_create_(struct nvkm_object *parent,
+		       struct nvkm_object *engine,
+		       struct nvkm_oclass *oclass, u64 pushbuf, int head,
+		       int length, void **pobject)
+{
+	struct nvkm_device *device = parent->engine->subdev.device;
+	struct nvkm_client *client = nvkm_client(parent);
+	struct nvkm_dmaobj *dmaobj;
+	struct nv50_disp_dmac *dmac;
+	int ret;
+
+	ret = nv50_disp_chan_create_(parent, engine, oclass, head,
+				     length, pobject);
+	dmac = *pobject;
+	if (ret)
+		return ret;
+
+	dmaobj = nvkm_dma_search(device->dma, client, pushbuf);
+	if (!dmaobj)
+		return -ENOENT;
+
+	if (dmaobj->limit - dmaobj->start != 0xfff)
+		return -EINVAL;
+
+	switch (dmaobj->target) {
+	case NV_MEM_TARGET_VRAM:
+		dmac->push = 0x00000001 | dmaobj->start >> 8;
+		break;
+	case NV_MEM_TARGET_PCI_NOSNOOP:
+		dmac->push = 0x00000003 | dmaobj->start >> 8;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}