--- /dev/null
+/*
+ * 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
+ */
+#include "nv04.h"
+
+#include <core/device.h>
+#include <core/gpuobj.h>
+#include <core/option.h>
+#include <subdev/timer.h>
+
+#define NV44_GART_SIZE (512 * 1024 * 1024)
+#define NV44_GART_PAGE ( 4 * 1024)
+
+/*******************************************************************************
+ * VM map/unmap callbacks
+ ******************************************************************************/
+
+static void
+nv44_vm_fill(struct nvkm_gpuobj *pgt, dma_addr_t null,
+ dma_addr_t *list, u32 pte, u32 cnt)
+{
+ u32 base = (pte << 2) & ~0x0000000f;
+ u32 tmp[4];
+
+ tmp[0] = nv_ro32(pgt, base + 0x0);
+ tmp[1] = nv_ro32(pgt, base + 0x4);
+ tmp[2] = nv_ro32(pgt, base + 0x8);
+ tmp[3] = nv_ro32(pgt, base + 0xc);
+
+ while (cnt--) {
+ u32 addr = list ? (*list++ >> 12) : (null >> 12);
+ switch (pte++ & 0x3) {
+ case 0:
+ tmp[0] &= ~0x07ffffff;
+ tmp[0] |= addr;
+ break;
+ case 1:
+ tmp[0] &= ~0xf8000000;
+ tmp[0] |= addr << 27;
+ tmp[1] &= ~0x003fffff;
+ tmp[1] |= addr >> 5;
+ break;
+ case 2:
+ tmp[1] &= ~0xffc00000;
+ tmp[1] |= addr << 22;
+ tmp[2] &= ~0x0001ffff;
+ tmp[2] |= addr >> 10;
+ break;
+ case 3:
+ tmp[2] &= ~0xfffe0000;
+ tmp[2] |= addr << 17;
+ tmp[3] &= ~0x00000fff;
+ tmp[3] |= addr >> 15;
+ break;
+ }
+ }
+
+ nv_wo32(pgt, base + 0x0, tmp[0]);
+ nv_wo32(pgt, base + 0x4, tmp[1]);
+ nv_wo32(pgt, base + 0x8, tmp[2]);
+ nv_wo32(pgt, base + 0xc, tmp[3] | 0x40000000);
+}
+
+static void
+nv44_vm_map_sg(struct nvkm_vma *vma, struct nvkm_gpuobj *pgt,
+ struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list)
+{
+ struct nv04_mmu_priv *priv = (void *)vma->vm->mmu;
+ u32 tmp[4];
+ int i;
+
+ if (pte & 3) {
+ u32 max = 4 - (pte & 3);
+ u32 part = (cnt > max) ? max : cnt;
+ nv44_vm_fill(pgt, priv->null, list, pte, part);
+ pte += part;
+ list += part;
+ cnt -= part;
+ }
+
+ while (cnt >= 4) {
+ for (i = 0; i < 4; i++)
+ tmp[i] = *list++ >> 12;
+ nv_wo32(pgt, pte++ * 4, tmp[0] >> 0 | tmp[1] << 27);
+ nv_wo32(pgt, pte++ * 4, tmp[1] >> 5 | tmp[2] << 22);
+ nv_wo32(pgt, pte++ * 4, tmp[2] >> 10 | tmp[3] << 17);
+ nv_wo32(pgt, pte++ * 4, tmp[3] >> 15 | 0x40000000);
+ cnt -= 4;
+ }
+
+ if (cnt)
+ nv44_vm_fill(pgt, priv->null, list, pte, cnt);
+}
+
+static void
+nv44_vm_unmap(struct nvkm_gpuobj *pgt, u32 pte, u32 cnt)
+{
+ struct nv04_mmu_priv *priv = (void *)nvkm_mmu(pgt);
+
+ if (pte & 3) {
+ u32 max = 4 - (pte & 3);
+ u32 part = (cnt > max) ? max : cnt;
+ nv44_vm_fill(pgt, priv->null, NULL, pte, part);
+ pte += part;
+ cnt -= part;
+ }
+
+ while (cnt >= 4) {
+ nv_wo32(pgt, pte++ * 4, 0x00000000);
+ nv_wo32(pgt, pte++ * 4, 0x00000000);
+ nv_wo32(pgt, pte++ * 4, 0x00000000);
+ nv_wo32(pgt, pte++ * 4, 0x00000000);
+ cnt -= 4;
+ }
+
+ if (cnt)
+ nv44_vm_fill(pgt, priv->null, NULL, pte, cnt);
+}
+
+static void
+nv44_vm_flush(struct nvkm_vm *vm)
+{
+ struct nv04_mmu_priv *priv = (void *)vm->mmu;
+ nv_wr32(priv, 0x100814, priv->base.limit - NV44_GART_PAGE);
+ nv_wr32(priv, 0x100808, 0x00000020);
+ if (!nv_wait(priv, 0x100808, 0x00000001, 0x00000001))
+ nv_error(priv, "timeout: 0x%08x\n", nv_rd32(priv, 0x100808));
+ nv_wr32(priv, 0x100808, 0x00000000);
+}
+
+/*******************************************************************************
+ * MMU subdev
+ ******************************************************************************/
+
+static int
+nv44_mmu_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, void *data, u32 size,
+ struct nvkm_object **pobject)
+{
+ struct nvkm_device *device = nv_device(parent);
+ struct nv04_mmu_priv *priv;
+ int ret;
+
+ if (pci_find_capability(device->pdev, PCI_CAP_ID_AGP) ||
+ !nvkm_boolopt(device->cfgopt, "NvPCIE", true)) {
+ return nvkm_object_ctor(parent, engine, &nv04_mmu_oclass,
+ data, size, pobject);
+ }
+
+ ret = nvkm_mmu_create(parent, engine, oclass, "PCIEGART",
+ "pciegart", &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ priv->base.create = nv04_vm_create;
+ priv->base.limit = NV44_GART_SIZE;
+ priv->base.dma_bits = 39;
+ priv->base.pgt_bits = 32 - 12;
+ priv->base.spg_shift = 12;
+ priv->base.lpg_shift = 12;
+ priv->base.map_sg = nv44_vm_map_sg;
+ priv->base.unmap = nv44_vm_unmap;
+ priv->base.flush = nv44_vm_flush;
+
+ priv->nullp = pci_alloc_consistent(device->pdev, 16 * 1024, &priv->null);
+ if (!priv->nullp) {
+ nv_error(priv, "unable to allocate dummy pages\n");
+ return -ENOMEM;
+ }
+
+ ret = nvkm_vm_create(&priv->base, 0, NV44_GART_SIZE, 0, 4096,
+ &priv->vm);
+ if (ret)
+ return ret;
+
+ ret = nvkm_gpuobj_new(nv_object(priv), NULL,
+ (NV44_GART_SIZE / NV44_GART_PAGE) * 4,
+ 512 * 1024, NVOBJ_FLAG_ZERO_ALLOC,
+ &priv->vm->pgt[0].obj[0]);
+ priv->vm->pgt[0].refcount[0] = 1;
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int
+nv44_mmu_init(struct nvkm_object *object)
+{
+ struct nv04_mmu_priv *priv = (void *)object;
+ struct nvkm_gpuobj *gart = priv->vm->pgt[0].obj[0];
+ u32 addr;
+ int ret;
+
+ ret = nvkm_mmu_init(&priv->base);
+ if (ret)
+ return ret;
+
+ /* calculate vram address of this PRAMIN block, object must be
+ * allocated on 512KiB alignment, and not exceed a total size
+ * of 512KiB for this to work correctly
+ */
+ addr = nv_rd32(priv, 0x10020c);
+ addr -= ((gart->addr >> 19) + 1) << 19;
+
+ nv_wr32(priv, 0x100850, 0x80000000);
+ nv_wr32(priv, 0x100818, priv->null);
+ nv_wr32(priv, 0x100804, NV44_GART_SIZE);
+ nv_wr32(priv, 0x100850, 0x00008000);
+ nv_mask(priv, 0x10008c, 0x00000200, 0x00000200);
+ nv_wr32(priv, 0x100820, 0x00000000);
+ nv_wr32(priv, 0x10082c, 0x00000001);
+ nv_wr32(priv, 0x100800, addr | 0x00000010);
+ return 0;
+}
+
+struct nvkm_oclass
+nv44_mmu_oclass = {
+ .handle = NV_SUBDEV(MMU, 0x44),
+ .ofuncs = &(struct nvkm_ofuncs) {
+ .ctor = nv44_mmu_ctor,
+ .dtor = nv04_mmu_dtor,
+ .init = nv44_mmu_init,
+ .fini = _nvkm_mmu_fini,
+ },
+};
Code Review / kvmfornfv.git / blobdiff