1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/tu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/tu102.c
new file mode 100644
index 000000000000..3d063fb5e136
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/tu102.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2021 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 "priv.h"
+
+#include <nvif/class.h>
+
+static void
+tu102_vfn_intr_reset(struct nvkm_intr *intr, int leaf, u32 mask)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1000 + (leaf * 4), mask);
+}
+
+static void
+tu102_vfn_intr_allow(struct nvkm_intr *intr, int leaf, u32 mask)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1200 + (leaf * 4), mask);
+}
+
+static void
+tu102_vfn_intr_block(struct nvkm_intr *intr, int leaf, u32 mask)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1400 + (leaf * 4), mask);
+}
+
+static void
+tu102_vfn_intr_rearm(struct nvkm_intr *intr)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1608, 0x0000000f);
+}
+
+static void
+tu102_vfn_intr_unarm(struct nvkm_intr *intr)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+
+	nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1610, 0x0000000f);
+}
+
+static bool
+tu102_vfn_intr_pending(struct nvkm_intr *intr)
+{
+	struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
+	struct nvkm_device *device = vfn->subdev.device;
+	u32 intr_top = nvkm_rd32(device, vfn->addr.priv + 0x1600);
+	int pending = 0, leaf;
+
+	for (leaf = 0; leaf < 8; leaf++) {
+		if (intr_top & BIT(leaf / 2)) {
+			intr->stat[leaf] = nvkm_rd32(device, vfn->addr.priv + 0x1000 + (leaf * 4));
+			if (intr->stat[leaf])
+				pending++;
+		} else {
+			intr->stat[leaf] = 0;
+		}
+	}
+
+	return pending != 0;
+}
+
+const struct nvkm_intr_func
+tu102_vfn_intr = {
+	.pending = tu102_vfn_intr_pending,
+	.unarm = tu102_vfn_intr_unarm,
+	.rearm = tu102_vfn_intr_rearm,
+	.block = tu102_vfn_intr_block,
+	.allow = tu102_vfn_intr_allow,
+	.reset = tu102_vfn_intr_reset,
+};
+
+static const struct nvkm_vfn_func
+tu102_vfn = {
+	.intr = &tu102_vfn_intr,
+	.user = { 0x030000, 0x010000, { -1, -1, TURING_USERMODE_A } },
+};
+
+int
+tu102_vfn_new(struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn)
+{
+	return nvkm_vfn_new_(&tu102_vfn, device, type, inst, 0xb80000, pvfn);
+}