| 1 | /* $NetBSD: nouveau_subdev_vm_nv04.c,v 1.3 2015/10/14 00:12:55 mrg Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2012 Red Hat Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Ben Skeggs |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_vm_nv04.c,v 1.3 2015/10/14 00:12:55 mrg Exp $" ); |
| 29 | |
| 30 | #include <core/gpuobj.h> |
| 31 | |
| 32 | #include "nv04.h" |
| 33 | |
| 34 | #define NV04_PDMA_SIZE (128 * 1024 * 1024) |
| 35 | #define NV04_PDMA_PAGE ( 4 * 1024) |
| 36 | |
| 37 | /******************************************************************************* |
| 38 | * VM map/unmap callbacks |
| 39 | ******************************************************************************/ |
| 40 | |
| 41 | static void |
| 42 | nv04_vm_map_sg(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt, |
| 43 | struct nouveau_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) |
| 44 | { |
| 45 | pte = 0x00008 + (pte * 4); |
| 46 | while (cnt) { |
| 47 | u32 page = PAGE_SIZE / NV04_PDMA_PAGE; |
| 48 | u32 phys = (u32)*list++; |
| 49 | while (cnt && page--) { |
| 50 | nv_wo32(pgt, pte, phys | 3); |
| 51 | phys += NV04_PDMA_PAGE; |
| 52 | pte += 4; |
| 53 | cnt -= 1; |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | static void |
| 59 | nv04_vm_unmap(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt) |
| 60 | { |
| 61 | pte = 0x00008 + (pte * 4); |
| 62 | while (cnt--) { |
| 63 | nv_wo32(pgt, pte, 0x00000000); |
| 64 | pte += 4; |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | static void |
| 69 | nv04_vm_flush(struct nouveau_vm *vm) |
| 70 | { |
| 71 | } |
| 72 | |
| 73 | /******************************************************************************* |
| 74 | * VM object |
| 75 | ******************************************************************************/ |
| 76 | |
| 77 | int |
| 78 | nv04_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length, u64 mmstart, |
| 79 | struct nouveau_vm **pvm) |
| 80 | { |
| 81 | return -EINVAL; |
| 82 | } |
| 83 | |
| 84 | /******************************************************************************* |
| 85 | * VMMGR subdev |
| 86 | ******************************************************************************/ |
| 87 | |
| 88 | static int |
| 89 | nv04_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| 90 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 91 | struct nouveau_object **pobject) |
| 92 | { |
| 93 | struct nv04_vmmgr_priv *priv; |
| 94 | struct nouveau_gpuobj *dma; |
| 95 | int ret; |
| 96 | |
| 97 | ret = nouveau_vmmgr_create(parent, engine, oclass, "PCIGART" , |
| 98 | "pcigart" , &priv); |
| 99 | *pobject = nv_object(priv); |
| 100 | if (ret) |
| 101 | return ret; |
| 102 | |
| 103 | priv->base.create = nv04_vm_create; |
| 104 | priv->base.limit = NV04_PDMA_SIZE; |
| 105 | priv->base.dma_bits = 32; |
| 106 | priv->base.pgt_bits = 32 - 12; |
| 107 | priv->base.spg_shift = 12; |
| 108 | priv->base.lpg_shift = 12; |
| 109 | priv->base.map_sg = nv04_vm_map_sg; |
| 110 | priv->base.unmap = nv04_vm_unmap; |
| 111 | priv->base.flush = nv04_vm_flush; |
| 112 | |
| 113 | ret = nouveau_vm_create(&priv->base, 0, NV04_PDMA_SIZE, 0, 4096, |
| 114 | &priv->vm); |
| 115 | if (ret) |
| 116 | return ret; |
| 117 | |
| 118 | ret = nouveau_gpuobj_new(nv_object(priv), NULL, |
| 119 | (NV04_PDMA_SIZE / NV04_PDMA_PAGE) * 4 + |
| 120 | 8, 16, NVOBJ_FLAG_ZERO_ALLOC, |
| 121 | &priv->vm->pgt[0].obj[0]); |
| 122 | dma = priv->vm->pgt[0].obj[0]; |
| 123 | priv->vm->pgt[0].refcount[0] = 1; |
| 124 | if (ret) |
| 125 | return ret; |
| 126 | |
| 127 | nv_wo32(dma, 0x00000, 0x0002103d); /* PCI, RW, PT, !LN */ |
| 128 | nv_wo32(dma, 0x00004, NV04_PDMA_SIZE - 1); |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | void |
| 133 | nv04_vmmgr_dtor(struct nouveau_object *object) |
| 134 | { |
| 135 | struct nv04_vmmgr_priv *priv = (void *)object; |
| 136 | if (priv->vm) { |
| 137 | nouveau_gpuobj_ref(NULL, &priv->vm->pgt[0].obj[0]); |
| 138 | nouveau_vm_ref(NULL, &priv->vm, NULL); |
| 139 | } |
| 140 | #ifdef __NetBSD__ |
| 141 | if (priv->nullp) { |
| 142 | struct nouveau_device *device = nv_device(priv); |
| 143 | const bus_dma_tag_t dmat = pci_dma64_available(&device->pdev->pd_pa) ? |
| 144 | device->pdev->pd_pa.pa_dmat64 : device->pdev->pd_pa.pa_dmat; |
| 145 | |
| 146 | bus_dmamap_unload(dmat, priv->nullmap); |
| 147 | bus_dmamem_unmap(dmat, priv->nullp, PAGE_SIZE); |
| 148 | bus_dmamap_destroy(dmat, priv->nullmap); |
| 149 | bus_dmamem_free(dmat, &priv->nullseg, 1); |
| 150 | } |
| 151 | #else |
| 152 | if (priv->nullp) { |
| 153 | pci_free_consistent(nv_device(priv)->pdev, 16 * 1024, |
| 154 | priv->nullp, priv->null); |
| 155 | } |
| 156 | #endif |
| 157 | nouveau_vmmgr_destroy(&priv->base); |
| 158 | } |
| 159 | |
| 160 | struct nouveau_oclass |
| 161 | nv04_vmmgr_oclass = { |
| 162 | .handle = NV_SUBDEV(VM, 0x04), |
| 163 | .ofuncs = &(struct nouveau_ofuncs) { |
| 164 | .ctor = nv04_vmmgr_ctor, |
| 165 | .dtor = nv04_vmmgr_dtor, |
| 166 | .init = _nouveau_vmmgr_init, |
| 167 | .fini = _nouveau_vmmgr_fini, |
| 168 | }, |
| 169 | }; |
| 170 | |