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 #define nv04_dmaobj(p) container_of((p), struct nv04_dmaobj, base) 25 #include "user.h" 26 27 #include <core/gpuobj.h> 28 #include <subdev/fb.h> 29 #include <subdev/mmu/vmm.h> 30 31 #include <nvif/class.h> 32 33 struct nv04_dmaobj { 34 struct nvkm_dmaobj base; 35 bool clone; 36 u32 flags0; 37 u32 flags2; 38 }; 39 40 static int 41 nv04_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent, 42 int align, struct nvkm_gpuobj **pgpuobj) 43 { 44 struct nv04_dmaobj *dmaobj = nv04_dmaobj(base); 45 struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device; 46 u64 offset = dmaobj->base.start & 0xfffff000; 47 u64 adjust = dmaobj->base.start & 0x00000fff; 48 u32 length = dmaobj->base.limit - dmaobj->base.start; 49 int ret; 50 51 if (dmaobj->clone) { 52 struct nvkm_memory *pgt = 53 device->mmu->vmm->pd->pt[0]->memory; 54 if (!dmaobj->base.start) 55 return nvkm_gpuobj_wrap(pgt, pgpuobj); 56 nvkm_kmap(pgt); 57 offset = nvkm_ro32(pgt, 8 + (offset >> 10)); 58 offset &= 0xfffff000; 59 nvkm_done(pgt); 60 } 61 62 ret = nvkm_gpuobj_new(device, 16, align, false, parent, pgpuobj); 63 if (ret == 0) { 64 nvkm_kmap(*pgpuobj); 65 nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0 | (adjust << 20)); 66 nvkm_wo32(*pgpuobj, 0x04, length); 67 nvkm_wo32(*pgpuobj, 0x08, dmaobj->flags2 | offset); 68 nvkm_wo32(*pgpuobj, 0x0c, dmaobj->flags2 | offset); 69 nvkm_done(*pgpuobj); 70 } 71 72 return ret; 73 } 74 75 static const struct nvkm_dmaobj_func 76 nv04_dmaobj_func = { 77 .bind = nv04_dmaobj_bind, 78 }; 79 80 int 81 nv04_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass, 82 void *data, u32 size, struct nvkm_dmaobj **pdmaobj) 83 { 84 struct nvkm_device *device = dma->engine.subdev.device; 85 struct nv04_dmaobj *dmaobj; 86 int ret; 87 88 if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL))) 89 return -ENOMEM; 90 *pdmaobj = &dmaobj->base; 91 92 ret = nvkm_dmaobj_ctor(&nv04_dmaobj_func, dma, oclass, 93 &data, &size, &dmaobj->base); 94 if (ret) 95 return ret; 96 97 if (dmaobj->base.target == NV_MEM_TARGET_VM) { 98 if (device->mmu->func == &nv04_mmu) 99 dmaobj->clone = true; 100 dmaobj->base.target = NV_MEM_TARGET_PCI; 101 dmaobj->base.access = NV_MEM_ACCESS_RW; 102 } 103 104 dmaobj->flags0 = oclass->base.oclass; 105 switch (dmaobj->base.target) { 106 case NV_MEM_TARGET_VRAM: 107 dmaobj->flags0 |= 0x00003000; 108 break; 109 case NV_MEM_TARGET_PCI: 110 dmaobj->flags0 |= 0x00023000; 111 break; 112 case NV_MEM_TARGET_PCI_NOSNOOP: 113 dmaobj->flags0 |= 0x00033000; 114 break; 115 default: 116 return -EINVAL; 117 } 118 119 switch (dmaobj->base.access) { 120 case NV_MEM_ACCESS_RO: 121 dmaobj->flags0 |= 0x00004000; 122 break; 123 case NV_MEM_ACCESS_WO: 124 dmaobj->flags0 |= 0x00008000; 125 fallthrough; 126 case NV_MEM_ACCESS_RW: 127 dmaobj->flags2 |= 0x00000002; 128 break; 129 default: 130 return -EINVAL; 131 } 132 133 return 0; 134 } 135