1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/falcon/gp102.c b/drivers/gpu/drm/nouveau/nvkm/falcon/gp102.c
new file mode 100644
index 000000000000..c774935f3077
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/falcon/gp102.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2022 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"
+
+static void
+gp102_flcn_pio_emem_rd(struct nvkm_falcon *falcon, u8 port, const u8 *img, int len)
+{
+	while (len >= 4) {
+		*(u32 *)img = nvkm_falcon_rd32(falcon, 0xac4 + (port * 8));
+		img += 4;
+		len -= 4;
+	}
+}
+
+static void
+gp102_flcn_pio_emem_rd_init(struct nvkm_falcon *falcon, u8 port, u32 dmem_base)
+{
+	nvkm_falcon_wr32(falcon, 0xac0 + (port * 8), BIT(25) | dmem_base);
+}
+
+static void
+gp102_flcn_pio_emem_wr(struct nvkm_falcon *falcon, u8 port, const u8 *img, int len, u16 tag)
+{
+	while (len >= 4) {
+		nvkm_falcon_wr32(falcon, 0xac4 + (port * 8), *(u32 *)img);
+		img += 4;
+		len -= 4;
+	}
+}
+
+static void
+gp102_flcn_pio_emem_wr_init(struct nvkm_falcon *falcon, u8 port, bool sec, u32 emem_base)
+{
+	nvkm_falcon_wr32(falcon, 0xac0 + (port * 8), BIT(24) | emem_base);
+}
+
+const struct nvkm_falcon_func_pio
+gp102_flcn_emem_pio = {
+	.min = 4,
+	.max = 0x100,
+	.wr_init = gp102_flcn_pio_emem_wr_init,
+	.wr = gp102_flcn_pio_emem_wr,
+	.rd_init = gp102_flcn_pio_emem_rd_init,
+	.rd = gp102_flcn_pio_emem_rd,
+};
+
+int
+gp102_flcn_reset_eng(struct nvkm_falcon *falcon)
+{
+	int ret;
+
+	if (falcon->func->reset_prep) {
+		ret = falcon->func->reset_prep(falcon);
+		if (ret)
+			return ret;
+	}
+
+	nvkm_falcon_mask(falcon, 0x3c0, 0x00000001, 0x00000001);
+	udelay(10);
+	nvkm_falcon_mask(falcon, 0x3c0, 0x00000001, 0x00000000);
+
+	return falcon->func->reset_wait_mem_scrubbing(falcon);
+}