1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c
new file mode 100644
index 000000000000..b595f130e573
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2017 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 "vmm.h"
+
+#include <subdev/timer.h>
+
+static void
+nv41_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+		 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
+{
+	u32 data = (addr >> 7) | 0x00000001; /* VALID. */
+	while (ptes--) {
+		VMM_WO032(pt, vmm, ptei++ * 4, data);
+		data += 0x00000020;
+	}
+}
+
+static void
+nv41_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+		 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
+{
+	VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, nv41_vmm_pgt_pte);
+}
+
+static void
+nv41_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+		 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
+{
+#if PAGE_SHIFT == 12
+	nvkm_kmap(pt->memory);
+	while (ptes--) {
+		const u32 data = (*map->dma++ >> 7) | 0x00000001;
+		VMM_WO032(pt, vmm, ptei++ * 4, data);
+	}
+	nvkm_done(pt->memory);
+#else
+	VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv41_vmm_pgt_pte);
+#endif
+}
+
+static void
+nv41_vmm_pgt_unmap(struct nvkm_vmm *vmm,
+		   struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
+{
+	VMM_FO032(pt, vmm, ptei * 4, 0, ptes);
+}
+
+static const struct nvkm_vmm_desc_func
+nv41_vmm_desc_pgt = {
+	.unmap = nv41_vmm_pgt_unmap,
+	.dma = nv41_vmm_pgt_dma,
+	.sgl = nv41_vmm_pgt_sgl,
+};
+
+static const struct nvkm_vmm_desc
+nv41_vmm_desc_12[] = {
+	{ PGT, 17, 4, 0x1000, &nv41_vmm_desc_pgt },
+	{}
+};
+
+static void
+nv41_vmm_flush(struct nvkm_vmm *vmm, int level)
+{
+	struct nvkm_subdev *subdev = &vmm->mmu->subdev;
+	struct nvkm_device *device = subdev->device;
+
+	mutex_lock(&subdev->mutex);
+	nvkm_wr32(device, 0x100810, 0x00000022);
+	nvkm_msec(device, 2000,
+		if (nvkm_rd32(device, 0x100810) & 0x00000020)
+			break;
+	);
+	nvkm_wr32(device, 0x100810, 0x00000000);
+	mutex_unlock(&subdev->mutex);
+}
+
+static const struct nvkm_vmm_func
+nv41_vmm = {
+	.valid = nv04_vmm_valid,
+	.flush = nv41_vmm_flush,
+	.page = {
+		{ 12, &nv41_vmm_desc_12[0], NVKM_VMM_PAGE_HOST },
+		{}
+	}
+};
+
+int
+nv41_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
+	     struct lock_class_key *key, const char *name,
+	     struct nvkm_vmm **pvmm)
+{
+	return nv04_vmm_new_(&nv41_vmm, mmu, 0, addr, size,
+			     argv, argc, key, name, pvmm);
+}