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, 278 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c b/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c
new file mode 100644
index 000000000000..2914646c8709
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c
@@ -0,0 +1,278 @@
+/*
+ * 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.
+ */
+
+#include <engine/falcon.h>
+#include <subdev/timer.h>
+
+void
+nouveau_falcon_intr(struct nouveau_subdev *subdev)
+{
+	struct nouveau_falcon *falcon = (void *)subdev;
+	u32 dispatch = nv_ro32(falcon, 0x01c);
+	u32 intr = nv_ro32(falcon, 0x008) & dispatch & ~(dispatch >> 16);
+
+	if (intr & 0x00000010) {
+		nv_debug(falcon, "ucode halted\n");
+		nv_wo32(falcon, 0x004, 0x00000010);
+		intr &= ~0x00000010;
+	}
+
+	if (intr)  {
+		nv_error(falcon, "unhandled intr 0x%08x\n", intr);
+		nv_wo32(falcon, 0x004, intr);
+	}
+}
+
+u32
+_nouveau_falcon_rd32(struct nouveau_object *object, u64 addr)
+{
+	struct nouveau_falcon *falcon = (void *)object;
+	return nv_rd32(falcon, falcon->addr + addr);
+}
+
+void
+_nouveau_falcon_wr32(struct nouveau_object *object, u64 addr, u32 data)
+{
+	struct nouveau_falcon *falcon = (void *)object;
+	nv_wr32(falcon, falcon->addr + addr, data);
+}
+
+static void *
+vmemdup(const void *src, size_t len)
+{
+	void *p = vmalloc(len);
+
+	if (p)
+		memcpy(p, src, len);
+	return p;
+}
+
+int
+_nouveau_falcon_init(struct nouveau_object *object)
+{
+	struct nouveau_device *device = nv_device(object);
+	struct nouveau_falcon *falcon = (void *)object;
+	const struct firmware *fw;
+	char name[32] = "internal";
+	int ret, i;
+	u32 caps;
+
+	/* enable engine, and determine its capabilities */
+	ret = nouveau_engine_init(&falcon->base);
+	if (ret)
+		return ret;
+
+	if (device->chipset <  0xa3 ||
+	    device->chipset == 0xaa || device->chipset == 0xac) {
+		falcon->version = 0;
+		falcon->secret  = (falcon->addr == 0x087000) ? 1 : 0;
+	} else {
+		caps = nv_ro32(falcon, 0x12c);
+		falcon->version = (caps & 0x0000000f);
+		falcon->secret  = (caps & 0x00000030) >> 4;
+	}
+
+	caps = nv_ro32(falcon, 0x108);
+	falcon->code.limit = (caps & 0x000001ff) << 8;
+	falcon->data.limit = (caps & 0x0003fe00) >> 1;
+
+	nv_debug(falcon, "falcon version: %d\n", falcon->version);
+	nv_debug(falcon, "secret level: %d\n", falcon->secret);
+	nv_debug(falcon, "code limit: %d\n", falcon->code.limit);
+	nv_debug(falcon, "data limit: %d\n", falcon->data.limit);
+
+	/* wait for 'uc halted' to be signalled before continuing */
+	if (falcon->secret && falcon->version < 4) {
+		if (!falcon->version)
+			nv_wait(falcon, 0x008, 0x00000010, 0x00000010);
+		else
+			nv_wait(falcon, 0x180, 0x80000000, 0);
+		nv_wo32(falcon, 0x004, 0x00000010);
+	}
+
+	/* disable all interrupts */
+	nv_wo32(falcon, 0x014, 0xffffffff);
+
+	/* no default ucode provided by the engine implementation, try and
+	 * locate a "self-bootstrapping" firmware image for the engine
+	 */
+	if (!falcon->code.data) {
+		snprintf(name, sizeof(name), "nouveau/nv%02x_fuc%03x",
+			 device->chipset, falcon->addr >> 12);
+
+		ret = request_firmware(&fw, name, nv_device_base(device));
+		if (ret == 0) {
+			falcon->code.data = vmemdup(fw->data, fw->size);
+			falcon->code.size = fw->size;
+			falcon->data.data = NULL;
+			falcon->data.size = 0;
+			release_firmware(fw);
+		}
+
+		falcon->external = true;
+	}
+
+	/* next step is to try and load "static code/data segment" firmware
+	 * images for the engine
+	 */
+	if (!falcon->code.data) {
+		snprintf(name, sizeof(name), "nouveau/nv%02x_fuc%03xd",
+			 device->chipset, falcon->addr >> 12);
+
+		ret = request_firmware(&fw, name, nv_device_base(device));
+		if (ret) {
+			nv_error(falcon, "unable to load firmware data\n");
+			return ret;
+		}
+
+		falcon->data.data = vmemdup(fw->data, fw->size);
+		falcon->data.size = fw->size;
+		release_firmware(fw);
+		if (!falcon->data.data)
+			return -ENOMEM;
+
+		snprintf(name, sizeof(name), "nouveau/nv%02x_fuc%03xc",
+			 device->chipset, falcon->addr >> 12);
+
+		ret = request_firmware(&fw, name, nv_device_base(device));
+		if (ret) {
+			nv_error(falcon, "unable to load firmware code\n");
+			return ret;
+		}
+
+		falcon->code.data = vmemdup(fw->data, fw->size);
+		falcon->code.size = fw->size;
+		release_firmware(fw);
+		if (!falcon->code.data)
+			return -ENOMEM;
+	}
+
+	nv_debug(falcon, "firmware: %s (%s)\n", name, falcon->data.data ?
+		 "static code/data segments" : "self-bootstrapping");
+
+	/* ensure any "self-bootstrapping" firmware image is in vram */
+	if (!falcon->data.data && !falcon->core) {
+		ret = nouveau_gpuobj_new(object->parent, NULL,
+					 falcon->code.size, 256, 0,
+					&falcon->core);
+		if (ret) {
+			nv_error(falcon, "core allocation failed, %d\n", ret);
+			return ret;
+		}
+
+		for (i = 0; i < falcon->code.size; i += 4)
+			nv_wo32(falcon->core, i, falcon->code.data[i / 4]);
+	}
+
+	/* upload firmware bootloader (or the full code segments) */
+	if (falcon->core) {
+		if (device->card_type < NV_C0)
+			nv_wo32(falcon, 0x618, 0x04000000);
+		else
+			nv_wo32(falcon, 0x618, 0x00000114);
+		nv_wo32(falcon, 0x11c, 0);
+		nv_wo32(falcon, 0x110, falcon->core->addr >> 8);
+		nv_wo32(falcon, 0x114, 0);
+		nv_wo32(falcon, 0x118, 0x00006610);
+	} else {
+		if (falcon->code.size > falcon->code.limit ||
+		    falcon->data.size > falcon->data.limit) {
+			nv_error(falcon, "ucode exceeds falcon limit(s)\n");
+			return -EINVAL;
+		}
+
+		if (falcon->version < 3) {
+			nv_wo32(falcon, 0xff8, 0x00100000);
+			for (i = 0; i < falcon->code.size / 4; i++)
+				nv_wo32(falcon, 0xff4, falcon->code.data[i]);
+		} else {
+			nv_wo32(falcon, 0x180, 0x01000000);
+			for (i = 0; i < falcon->code.size / 4; i++) {
+				if ((i & 0x3f) == 0)
+					nv_wo32(falcon, 0x188, i >> 6);
+				nv_wo32(falcon, 0x184, falcon->code.data[i]);
+			}
+		}
+	}
+
+	/* upload data segment (if necessary), zeroing the remainder */
+	if (falcon->version < 3) {
+		nv_wo32(falcon, 0xff8, 0x00000000);
+		for (i = 0; !falcon->core && i < falcon->data.size / 4; i++)
+			nv_wo32(falcon, 0xff4, falcon->data.data[i]);
+		for (; i < falcon->data.limit; i += 4)
+			nv_wo32(falcon, 0xff4, 0x00000000);
+	} else {
+		nv_wo32(falcon, 0x1c0, 0x01000000);
+		for (i = 0; !falcon->core && i < falcon->data.size / 4; i++)
+			nv_wo32(falcon, 0x1c4, falcon->data.data[i]);
+		for (; i < falcon->data.limit / 4; i++)
+			nv_wo32(falcon, 0x1c4, 0x00000000);
+	}
+
+	/* start it running */
+	nv_wo32(falcon, 0x10c, 0x00000001); /* BLOCK_ON_FIFO */
+	nv_wo32(falcon, 0x104, 0x00000000); /* ENTRY */
+	nv_wo32(falcon, 0x100, 0x00000002); /* TRIGGER */
+	nv_wo32(falcon, 0x048, 0x00000003); /* FIFO | CHSW */
+	return 0;
+}
+
+int
+_nouveau_falcon_fini(struct nouveau_object *object, bool suspend)
+{
+	struct nouveau_falcon *falcon = (void *)object;
+
+	if (!suspend) {
+		nouveau_gpuobj_ref(NULL, &falcon->core);
+		if (falcon->external) {
+			vfree(falcon->data.data);
+			vfree(falcon->code.data);
+			falcon->code.data = NULL;
+		}
+	}
+
+	nv_mo32(falcon, 0x048, 0x00000003, 0x00000000);
+	nv_wo32(falcon, 0x014, 0xffffffff);
+
+	return nouveau_engine_fini(&falcon->base, suspend);
+}
+
+int
+nouveau_falcon_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_falcon *falcon;
+	int ret;
+
+	ret = nouveau_engine_create_(parent, engine, oclass, enable, iname,
+				     fname, length, pobject);
+	falcon = *pobject;
+	if (ret)
+		return ret;
+
+	falcon->addr = addr;
+	return 0;
+}