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 gf119_dmaobj(p) container_of((p), struct gf119_dmaobj, base) 25 #include "user.h" 26 27 #include <core/client.h> 28 #include <core/gpuobj.h> 29 #include <subdev/fb.h> 30 31 #include <nvif/cl0002.h> 32 #include <nvif/unpack.h> 33 34 struct gf119_dmaobj { 35 struct nvkm_dmaobj base; 36 u32 flags0; 37 }; 38 39 static int 40 gf119_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent, 41 int align, struct nvkm_gpuobj **pgpuobj) 42 { 43 struct gf119_dmaobj *dmaobj = gf119_dmaobj(base); 44 struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device; 45 int ret; 46 47 ret = nvkm_gpuobj_new(device, 24, align, false, parent, pgpuobj); 48 if (ret == 0) { 49 nvkm_kmap(*pgpuobj); 50 nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0); 51 nvkm_wo32(*pgpuobj, 0x04, dmaobj->base.start >> 8); 52 nvkm_wo32(*pgpuobj, 0x08, dmaobj->base.limit >> 8); 53 nvkm_wo32(*pgpuobj, 0x0c, 0x00000000); 54 nvkm_wo32(*pgpuobj, 0x10, 0x00000000); 55 nvkm_wo32(*pgpuobj, 0x14, 0x00000000); 56 nvkm_done(*pgpuobj); 57 } 58 59 return ret; 60 } 61 62 static const struct nvkm_dmaobj_func 63 gf119_dmaobj_func = { 64 .bind = gf119_dmaobj_bind, 65 }; 66 67 int 68 gf119_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass, 69 void *data, u32 size, struct nvkm_dmaobj **pdmaobj) 70 { 71 union { 72 struct gf119_dma_v0 v0; 73 } *args; 74 struct nvkm_object *parent = oclass->parent; 75 struct gf119_dmaobj *dmaobj; 76 u32 kind, page; 77 int ret; 78 79 if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL))) 80 return -ENOMEM; 81 *pdmaobj = &dmaobj->base; 82 83 ret = nvkm_dmaobj_ctor(&gf119_dmaobj_func, dma, oclass, 84 &data, &size, &dmaobj->base); 85 if (ret) 86 return ret; 87 88 ret = -ENOSYS; 89 args = data; 90 91 nvif_ioctl(parent, "create gf119 dma size %d\n", size); 92 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) { 93 nvif_ioctl(parent, 94 "create gf100 dma vers %d page %d kind %02x\n", 95 args->v0.version, args->v0.page, args->v0.kind); 96 kind = args->v0.kind; 97 page = args->v0.page; 98 } else 99 if (size == 0) { 100 if (dmaobj->base.target != NV_MEM_TARGET_VM) { 101 kind = GF119_DMA_V0_KIND_PITCH; 102 page = GF119_DMA_V0_PAGE_SP; 103 } else { 104 kind = GF119_DMA_V0_KIND_VM; 105 page = GF119_DMA_V0_PAGE_LP; 106 } 107 } else 108 return ret; 109 110 if (page > 1) 111 return -EINVAL; 112 dmaobj->flags0 = (kind << 20) | (page << 6); 113 114 switch (dmaobj->base.target) { 115 case NV_MEM_TARGET_VRAM: 116 dmaobj->flags0 |= 0x00000009; 117 break; 118 case NV_MEM_TARGET_VM: 119 case NV_MEM_TARGET_PCI: 120 case NV_MEM_TARGET_PCI_NOSNOOP: 121 /* XXX: don't currently know how to construct a real one 122 * of these. we only use them to represent pushbufs 123 * on these chipsets, and the classes that use them 124 * deal with the target themselves. 125 */ 126 break; 127 default: 128 return -EINVAL; 129 } 130 131 return 0; 132 } 133