1 /* 2 * Copyright 2012 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24 #include "user.h" 25 26 #include <core/client.h> 27 #include <core/gpuobj.h> 28 #include <subdev/fb.h> 29 #include <subdev/instmem.h> 30 31 #include <nvif/cl0002.h> 32 #include <nvif/unpack.h> 33 34 static const struct nvkm_object_func nvkm_dmaobj_func; 35 struct nvkm_dmaobj * 36 nvkm_dmaobj_search(struct nvkm_client *client, u64 handle) 37 { 38 struct nvkm_object *object; 39 40 object = nvkm_object_search(client, handle, &nvkm_dmaobj_func); 41 if (IS_ERR(object)) 42 return (void *)object; 43 44 return nvkm_dmaobj(object); 45 } 46 47 static int 48 nvkm_dmaobj_bind(struct nvkm_object *base, struct nvkm_gpuobj *gpuobj, 49 int align, struct nvkm_gpuobj **pgpuobj) 50 { 51 struct nvkm_dmaobj *dmaobj = nvkm_dmaobj(base); 52 return dmaobj->func->bind(dmaobj, gpuobj, align, pgpuobj); 53 } 54 55 static void * 56 nvkm_dmaobj_dtor(struct nvkm_object *base) 57 { 58 return nvkm_dmaobj(base); 59 } 60 61 static const struct nvkm_object_func 62 nvkm_dmaobj_func = { 63 .dtor = nvkm_dmaobj_dtor, 64 .bind = nvkm_dmaobj_bind, 65 }; 66 67 int 68 nvkm_dmaobj_ctor(const struct nvkm_dmaobj_func *func, struct nvkm_dma *dma, 69 const struct nvkm_oclass *oclass, void **pdata, u32 *psize, 70 struct nvkm_dmaobj *dmaobj) 71 { 72 union { 73 struct nv_dma_v0 v0; 74 } *args = *pdata; 75 struct nvkm_device *device = dma->engine.subdev.device; 76 struct nvkm_client *client = oclass->client; 77 struct nvkm_object *parent = oclass->parent; 78 struct nvkm_instmem *instmem = device->imem; 79 struct nvkm_fb *fb = device->fb; 80 void *data = *pdata; 81 u32 size = *psize; 82 int ret = -ENOSYS; 83 84 nvkm_object_ctor(&nvkm_dmaobj_func, oclass, &dmaobj->object); 85 dmaobj->func = func; 86 dmaobj->dma = dma; 87 88 nvif_ioctl(parent, "create dma size %d\n", *psize); 89 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) { 90 nvif_ioctl(parent, "create dma vers %d target %d access %d " 91 "start %016llx limit %016llx\n", 92 args->v0.version, args->v0.target, args->v0.access, 93 args->v0.start, args->v0.limit); 94 dmaobj->target = args->v0.target; 95 dmaobj->access = args->v0.access; 96 dmaobj->start = args->v0.start; 97 dmaobj->limit = args->v0.limit; 98 } else 99 return ret; 100 101 *pdata = data; 102 *psize = size; 103 104 if (dmaobj->start > dmaobj->limit) 105 return -EINVAL; 106 107 switch (dmaobj->target) { 108 case NV_DMA_V0_TARGET_VM: 109 dmaobj->target = NV_MEM_TARGET_VM; 110 break; 111 case NV_DMA_V0_TARGET_VRAM: 112 if (!client->super) { 113 if (dmaobj->limit >= fb->ram->size - instmem->reserved) 114 return -EACCES; 115 if (device->card_type >= NV_50) 116 return -EACCES; 117 } 118 dmaobj->target = NV_MEM_TARGET_VRAM; 119 break; 120 case NV_DMA_V0_TARGET_PCI: 121 if (!client->super) 122 return -EACCES; 123 dmaobj->target = NV_MEM_TARGET_PCI; 124 break; 125 case NV_DMA_V0_TARGET_PCI_US: 126 case NV_DMA_V0_TARGET_AGP: 127 if (!client->super) 128 return -EACCES; 129 dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP; 130 break; 131 default: 132 return -EINVAL; 133 } 134 135 switch (dmaobj->access) { 136 case NV_DMA_V0_ACCESS_VM: 137 dmaobj->access = NV_MEM_ACCESS_VM; 138 break; 139 case NV_DMA_V0_ACCESS_RD: 140 dmaobj->access = NV_MEM_ACCESS_RO; 141 break; 142 case NV_DMA_V0_ACCESS_WR: 143 dmaobj->access = NV_MEM_ACCESS_WO; 144 break; 145 case NV_DMA_V0_ACCESS_RDWR: 146 dmaobj->access = NV_MEM_ACCESS_RW; 147 break; 148 default: 149 return -EINVAL; 150 } 151 152 return ret; 153 } 154