drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)

The symlinks were annoying some people, and they're not used anywhere
else in the kernel tree.  The include directory structure has been
changed so that symlinks aren't needed anymore.

NVKM has been moved from core/ to nvkm/ to make it more obvious as to
what the directory is for, and as some minor prep for when NVKM gets
split out into its own module (virt) at a later date.

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

1 files changed, 176 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c b/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c
new file mode 100644
index 000000000000..92384759d2f5
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/xtensa.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright 2013 Ilia Mirkin
+ *
+ * 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.
+ */
+
+#include <engine/xtensa.h>
+
+u32
+_nouveau_xtensa_rd32(struct nouveau_object *object, u64 addr)
+{
+	struct nouveau_xtensa *xtensa = (void *)object;
+	return nv_rd32(xtensa, xtensa->addr + addr);
+}
+
+void
+_nouveau_xtensa_wr32(struct nouveau_object *object, u64 addr, u32 data)
+{
+	struct nouveau_xtensa *xtensa = (void *)object;
+	nv_wr32(xtensa, xtensa->addr + addr, data);
+}
+
+int
+_nouveau_xtensa_engctx_ctor(struct nouveau_object *parent,
+			    struct nouveau_object *engine,
+			    struct nouveau_oclass *oclass, void *data, u32 size,
+			    struct nouveau_object **pobject)
+{
+	struct nouveau_engctx *engctx;
+	int ret;
+
+	ret = nouveau_engctx_create(parent, engine, oclass, NULL,
+				    0x10000, 0x1000,
+				    NVOBJ_FLAG_ZERO_ALLOC, &engctx);
+	*pobject = nv_object(engctx);
+	return ret;
+}
+
+void
+_nouveau_xtensa_intr(struct nouveau_subdev *subdev)
+{
+	struct nouveau_xtensa *xtensa = (void *)subdev;
+	u32 unk104 = nv_ro32(xtensa, 0xd04);
+	u32 intr = nv_ro32(xtensa, 0xc20);
+	u32 chan = nv_ro32(xtensa, 0xc28);
+	u32 unk10c = nv_ro32(xtensa, 0xd0c);
+
+	if (intr & 0x10)
+		nv_warn(xtensa, "Watchdog interrupt, engine hung.\n");
+	nv_wo32(xtensa, 0xc20, intr);
+	intr = nv_ro32(xtensa, 0xc20);
+	if (unk104 == 0x10001 && unk10c == 0x200 && chan && !intr) {
+		nv_debug(xtensa, "Enabling FIFO_CTRL\n");
+		nv_mask(xtensa, xtensa->addr + 0xd94, 0, xtensa->fifo_val);
+	}
+}
+
+int
+nouveau_xtensa_create_(struct nouveau_object *parent,
+		       struct nouveau_object *engine,
+		       struct nouveau_oclass *oclass, u32 addr, bool enable,
+		       const char *iname, const char *fname,
+		       int length, void **pobject)
+{
+	struct nouveau_xtensa *xtensa;
+	int ret;
+
+	ret = nouveau_engine_create_(parent, engine, oclass, enable, iname,
+				     fname, length, pobject);
+	xtensa = *pobject;
+	if (ret)
+		return ret;
+
+	nv_subdev(xtensa)->intr = _nouveau_xtensa_intr;
+
+	xtensa->addr = addr;
+
+	return 0;
+}
+
+int
+_nouveau_xtensa_init(struct nouveau_object *object)
+{
+	struct nouveau_device *device = nv_device(object);
+	struct nouveau_xtensa *xtensa = (void *)object;
+	const struct firmware *fw;
+	char name[32];
+	int i, ret;
+	u32 tmp;
+
+	ret = nouveau_engine_init(&xtensa->base);
+	if (ret)
+		return ret;
+
+	if (!xtensa->gpu_fw) {
+		snprintf(name, sizeof(name), "nouveau/nv84_xuc%03x",
+			 xtensa->addr >> 12);
+
+		ret = request_firmware(&fw, name, nv_device_base(device));
+		if (ret) {
+			nv_warn(xtensa, "unable to load firmware %s\n", name);
+			return ret;
+		}
+
+		if (fw->size > 0x40000) {
+			nv_warn(xtensa, "firmware %s too large\n", name);
+			release_firmware(fw);
+			return -EINVAL;
+		}
+
+		ret = nouveau_gpuobj_new(object, NULL, 0x40000, 0x1000, 0,
+					 &xtensa->gpu_fw);
+		if (ret) {
+			release_firmware(fw);
+			return ret;
+		}
+
+		nv_debug(xtensa, "Loading firmware to address: 0x%llx\n",
+			 xtensa->gpu_fw->addr);
+
+		for (i = 0; i < fw->size / 4; i++)
+			nv_wo32(xtensa->gpu_fw, i * 4, *((u32 *)fw->data + i));
+		release_firmware(fw);
+	}
+
+	nv_wo32(xtensa, 0xd10, 0x1fffffff); /* ?? */
+	nv_wo32(xtensa, 0xd08, 0x0fffffff); /* ?? */
+
+	nv_wo32(xtensa, 0xd28, xtensa->unkd28); /* ?? */
+	nv_wo32(xtensa, 0xc20, 0x3f); /* INTR */
+	nv_wo32(xtensa, 0xd84, 0x3f); /* INTR_EN */
+
+	nv_wo32(xtensa, 0xcc0, xtensa->gpu_fw->addr >> 8); /* XT_REGION_BASE */
+	nv_wo32(xtensa, 0xcc4, 0x1c); /* XT_REGION_SETUP */
+	nv_wo32(xtensa, 0xcc8, xtensa->gpu_fw->size >> 8); /* XT_REGION_LIMIT */
+
+	tmp = nv_rd32(xtensa, 0x0);
+	nv_wo32(xtensa, 0xde0, tmp); /* SCRATCH_H2X */
+
+	nv_wo32(xtensa, 0xce8, 0xf); /* XT_REGION_SETUP */
+
+	nv_wo32(xtensa, 0xc20, 0x3f); /* INTR */
+	nv_wo32(xtensa, 0xd84, 0x3f); /* INTR_EN */
+
+	return 0;
+}
+
+int
+_nouveau_xtensa_fini(struct nouveau_object *object, bool suspend)
+{
+	struct nouveau_xtensa *xtensa = (void *)object;
+
+	nv_wo32(xtensa, 0xd84, 0); /* INTR_EN */
+	nv_wo32(xtensa, 0xd94, 0); /* FIFO_CTRL */
+
+	if (!suspend)
+		nouveau_gpuobj_ref(NULL, &xtensa->gpu_fw);
+
+	return nouveau_engine_fini(&xtensa->base, suspend);
+}