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path: root/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c139
1 files changed, 139 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c
new file mode 100644
index 000000000000..62d3fb66d0ec
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c
@@ -0,0 +1,139 @@
+/*
+ * 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
+ */
+#define nv04_disp_root(p) container_of((p), struct nv04_disp_root, object)
+#include "priv.h"
+
+#include <core/client.h>
+
+#include <nvif/class.h>
+#include <nvif/unpack.h>
+
+struct nv04_disp_root {
+ struct nvkm_object object;
+ struct nvkm_disp *disp;
+};
+
+static int
+nv04_disp_scanoutpos(struct nv04_disp_root *root,
+ void *data, u32 size, int head)
+{
+ struct nvkm_device *device = root->disp->engine.subdev.device;
+ struct nvkm_object *object = &root->object;
+ const u32 hoff = head * 0x2000;
+ union {
+ struct nv04_disp_scanoutpos_v0 v0;
+ } *args = data;
+ u32 line;
+ int ret;
+
+ nvif_ioctl(object, "disp scanoutpos size %d\n", size);
+ if (nvif_unpack(args->v0, 0, 0, false)) {
+ nvif_ioctl(object, "disp scanoutpos vers %d\n",
+ args->v0.version);
+ args->v0.vblanks = nvkm_rd32(device, 0x680800 + hoff) & 0xffff;
+ args->v0.vtotal = nvkm_rd32(device, 0x680804 + hoff) & 0xffff;
+ args->v0.vblanke = args->v0.vtotal - 1;
+
+ args->v0.hblanks = nvkm_rd32(device, 0x680820 + hoff) & 0xffff;
+ args->v0.htotal = nvkm_rd32(device, 0x680824 + hoff) & 0xffff;
+ args->v0.hblanke = args->v0.htotal - 1;
+
+ /*
+ * If output is vga instead of digital then vtotal/htotal is
+ * invalid so we have to give up and trigger the timestamping
+ * fallback in the drm core.
+ */
+ if (!args->v0.vtotal || !args->v0.htotal)
+ return -ENOTSUPP;
+
+ args->v0.time[0] = ktime_to_ns(ktime_get());
+ line = nvkm_rd32(device, 0x600868 + hoff);
+ args->v0.time[1] = ktime_to_ns(ktime_get());
+ args->v0.hline = (line & 0xffff0000) >> 16;
+ args->v0.vline = (line & 0x0000ffff);
+ } else
+ return ret;
+
+ return 0;
+}
+
+static int
+nv04_disp_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
+{
+ struct nv04_disp_root *root = nv04_disp_root(object);
+ union {
+ struct nv04_disp_mthd_v0 v0;
+ } *args = data;
+ int head, ret;
+
+ nvif_ioctl(object, "disp mthd size %d\n", size);
+ if (nvif_unpack(args->v0, 0, 0, true)) {
+ nvif_ioctl(object, "disp mthd vers %d mthd %02x head %d\n",
+ args->v0.version, args->v0.method, args->v0.head);
+ mthd = args->v0.method;
+ head = args->v0.head;
+ } else
+ return ret;
+
+ if (head < 0 || head >= 2)
+ return -ENXIO;
+
+ switch (mthd) {
+ case NV04_DISP_SCANOUTPOS:
+ return nv04_disp_scanoutpos(root, data, size, head);
+ default:
+ break;
+ }
+
+ return -EINVAL;
+}
+
+static struct nvkm_object_func
+nv04_disp_root = {
+ .mthd = nv04_disp_mthd,
+ .ntfy = nvkm_disp_ntfy,
+};
+
+static int
+nv04_disp_root_new(struct nvkm_disp *disp, const struct nvkm_oclass *oclass,
+ void *data, u32 size, struct nvkm_object **pobject)
+{
+ struct nv04_disp_root *root;
+
+ if (!(root = kzalloc(sizeof(*root), GFP_KERNEL)))
+ return -ENOMEM;
+ root->disp = disp;
+ *pobject = &root->object;
+
+ nvkm_object_ctor(&nv04_disp_root, oclass, &root->object);
+ return 0;
+}
+
+const struct nvkm_disp_oclass
+nv04_disp_root_oclass = {
+ .base.oclass = NV04_DISP,
+ .base.minver = -1,
+ .base.maxver = -1,
+ .ctor = nv04_disp_root_new,
+};