1/* $NetBSD: nouveau_nvkm_engine_dma_usergf119.c,v 1.3 2021/12/18 23:45:35 riastradh 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#include <sys/cdefs.h> 27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_dma_usergf119.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $"); 28 29#define gf119_dmaobj(p) container_of((p), struct gf119_dmaobj, base) 30#include "user.h" 31 32#include <core/client.h> 33#include <core/gpuobj.h> 34#include <subdev/fb.h> 35 36#include <nvif/cl0002.h> 37#include <nvif/unpack.h> 38 39struct gf119_dmaobj { 40 struct nvkm_dmaobj base; 41 u32 flags0; 42}; 43 44static int 45gf119_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent, 46 int align, struct nvkm_gpuobj **pgpuobj) 47{ 48 struct gf119_dmaobj *dmaobj = gf119_dmaobj(base); 49 struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device; 50 int ret; 51 52 ret = nvkm_gpuobj_new(device, 24, align, false, parent, pgpuobj); 53 if (ret == 0) { 54 nvkm_kmap(*pgpuobj); 55 nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0); 56 nvkm_wo32(*pgpuobj, 0x04, dmaobj->base.start >> 8); 57 nvkm_wo32(*pgpuobj, 0x08, dmaobj->base.limit >> 8); 58 nvkm_wo32(*pgpuobj, 0x0c, 0x00000000); 59 nvkm_wo32(*pgpuobj, 0x10, 0x00000000); 60 nvkm_wo32(*pgpuobj, 0x14, 0x00000000); 61 nvkm_done(*pgpuobj); 62 } 63 64 return ret; 65} 66 67static const struct nvkm_dmaobj_func 68gf119_dmaobj_func = { 69 .bind = gf119_dmaobj_bind, 70}; 71 72int 73gf119_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass, 74 void *data, u32 size, struct nvkm_dmaobj **pdmaobj) 75{ 76 union { 77 struct gf119_dma_v0 v0; 78 } *args; 79 struct nvkm_object *parent = oclass->parent; 80 struct gf119_dmaobj *dmaobj; 81 u32 kind, page; 82 int ret; 83 84 if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL))) 85 return -ENOMEM; 86 *pdmaobj = &dmaobj->base; 87 88 ret = nvkm_dmaobj_ctor(&gf119_dmaobj_func, dma, oclass, 89 &data, &size, &dmaobj->base); 90 if (ret) 91 return ret; 92 93 ret = -ENOSYS; 94 args = data; 95 96 nvif_ioctl(parent, "create gf119 dma size %d\n", size); 97 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) { 98 nvif_ioctl(parent, 99 "create gf100 dma vers %d page %d kind %02x\n", 100 args->v0.version, args->v0.page, args->v0.kind); 101 kind = args->v0.kind; 102 page = args->v0.page; 103 } else 104 if (size == 0) { 105 if (dmaobj->base.target != NV_MEM_TARGET_VM) { 106 kind = GF119_DMA_V0_KIND_PITCH; 107 page = GF119_DMA_V0_PAGE_SP; 108 } else { 109 kind = GF119_DMA_V0_KIND_VM; 110 page = GF119_DMA_V0_PAGE_LP; 111 } 112 } else 113 return ret; 114 115 if (page > 1) 116 return -EINVAL; 117 dmaobj->flags0 = (kind << 20) | (page << 6); 118 119 switch (dmaobj->base.target) { 120 case NV_MEM_TARGET_VRAM: 121 dmaobj->flags0 |= 0x00000009; 122 break; 123 case NV_MEM_TARGET_VM: 124 case NV_MEM_TARGET_PCI: 125 case NV_MEM_TARGET_PCI_NOSNOOP: 126 /* XXX: don't currently know how to construct a real one 127 * of these. we only use them to represent pushbufs 128 * on these chipsets, and the classes that use them 129 * deal with the target themselves. 130 */ 131 break; 132 default: 133 return -EINVAL; 134 } 135 136 return 0; 137} 138