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 int 35 nvkm_dmaobj_bind(struct nvkm_object *base, struct nvkm_gpuobj *gpuobj, 36 int align, struct nvkm_gpuobj **pgpuobj) 37 { 38 struct nvkm_dmaobj *dmaobj = nvkm_dmaobj(base); 39 return dmaobj->func->bind(dmaobj, gpuobj, align, pgpuobj); 40 } 41 42 static void * 43 nvkm_dmaobj_dtor(struct nvkm_object *base) 44 { 45 struct nvkm_dmaobj *dmaobj = nvkm_dmaobj(base); 46 if (!RB_EMPTY_NODE(&dmaobj->rb)) 47 rb_erase(&dmaobj->rb, &dmaobj->object.client->dmaroot); 48 return dmaobj; 49 } 50 51 static const struct nvkm_object_func 52 nvkm_dmaobj_func = { 53 .dtor = nvkm_dmaobj_dtor, 54 .bind = nvkm_dmaobj_bind, 55 }; 56 57 int 58 nvkm_dmaobj_ctor(const struct nvkm_dmaobj_func *func, struct nvkm_dma *dma, 59 const struct nvkm_oclass *oclass, void **pdata, u32 *psize, 60 struct nvkm_dmaobj *dmaobj) 61 { 62 union { 63 struct nv_dma_v0 v0; 64 } *args = *pdata; 65 struct nvkm_device *device = dma->engine.subdev.device; 66 struct nvkm_client *client = oclass->client; 67 struct nvkm_object *parent = oclass->parent; 68 struct nvkm_instmem *instmem = device->imem; 69 struct nvkm_fb *fb = device->fb; 70 void *data = *pdata; 71 u32 size = *psize; 72 int ret = -ENOSYS; 73 74 nvkm_object_ctor(&nvkm_dmaobj_func, oclass, &dmaobj->object); 75 dmaobj->func = func; 76 dmaobj->dma = dma; 77 RB_CLEAR_NODE(&dmaobj->rb); 78 79 nvif_ioctl(parent, "create dma size %d\n", *psize); 80 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) { 81 nvif_ioctl(parent, "create dma vers %d target %d access %d " 82 "start %016llx limit %016llx\n", 83 args->v0.version, args->v0.target, args->v0.access, 84 args->v0.start, args->v0.limit); 85 dmaobj->target = args->v0.target; 86 dmaobj->access = args->v0.access; 87 dmaobj->start = args->v0.start; 88 dmaobj->limit = args->v0.limit; 89 } else 90 return ret; 91 92 *pdata = data; 93 *psize = size; 94 95 if (dmaobj->start > dmaobj->limit) 96 return -EINVAL; 97 98 switch (dmaobj->target) { 99 case NV_DMA_V0_TARGET_VM: 100 dmaobj->target = NV_MEM_TARGET_VM; 101 break; 102 case NV_DMA_V0_TARGET_VRAM: 103 if (!client->super) { 104 if (dmaobj->limit >= fb->ram->size - instmem->reserved) 105 return -EACCES; 106 if (device->card_type >= NV_50) 107 return -EACCES; 108 } 109 dmaobj->target = NV_MEM_TARGET_VRAM; 110 break; 111 case NV_DMA_V0_TARGET_PCI: 112 if (!client->super) 113 return -EACCES; 114 dmaobj->target = NV_MEM_TARGET_PCI; 115 break; 116 case NV_DMA_V0_TARGET_PCI_US: 117 case NV_DMA_V0_TARGET_AGP: 118 if (!client->super) 119 return -EACCES; 120 dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP; 121 break; 122 default: 123 return -EINVAL; 124 } 125 126 switch (dmaobj->access) { 127 case NV_DMA_V0_ACCESS_VM: 128 dmaobj->access = NV_MEM_ACCESS_VM; 129 break; 130 case NV_DMA_V0_ACCESS_RD: 131 dmaobj->access = NV_MEM_ACCESS_RO; 132 break; 133 case NV_DMA_V0_ACCESS_WR: 134 dmaobj->access = NV_MEM_ACCESS_WO; 135 break; 136 case NV_DMA_V0_ACCESS_RDWR: 137 dmaobj->access = NV_MEM_ACCESS_RW; 138 break; 139 default: 140 return -EINVAL; 141 } 142 143 return ret; 144 } 145