dmacnv50.c (4397B)
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 "channv50.h" 25 26#include <core/client.h> 27#include <core/ramht.h> 28#include <subdev/fb.h> 29#include <subdev/mmu.h> 30#include <subdev/timer.h> 31#include <engine/dma.h> 32 33int 34nv50_disp_dmac_new_(const struct nv50_disp_chan_func *func, 35 const struct nv50_disp_chan_mthd *mthd, 36 struct nv50_disp *disp, int chid, int head, u64 push, 37 const struct nvkm_oclass *oclass, 38 struct nvkm_object **pobject) 39{ 40 struct nvkm_client *client = oclass->client; 41 struct nv50_disp_chan *chan; 42 int ret; 43 44 ret = nv50_disp_chan_new_(func, mthd, disp, chid, chid, head, oclass, 45 pobject); 46 chan = nv50_disp_chan(*pobject); 47 if (ret) 48 return ret; 49 50 chan->memory = nvkm_umem_search(client, push); 51 if (IS_ERR(chan->memory)) 52 return PTR_ERR(chan->memory); 53 54 if (nvkm_memory_size(chan->memory) < 0x1000) 55 return -EINVAL; 56 57 switch (nvkm_memory_target(chan->memory)) { 58 case NVKM_MEM_TARGET_VRAM: chan->push = 0x00000001; break; 59 case NVKM_MEM_TARGET_NCOH: chan->push = 0x00000002; break; 60 case NVKM_MEM_TARGET_HOST: chan->push = 0x00000003; break; 61 default: 62 return -EINVAL; 63 } 64 65 chan->push |= nvkm_memory_addr(chan->memory) >> 8; 66 return 0; 67} 68 69int 70nv50_disp_dmac_bind(struct nv50_disp_chan *chan, 71 struct nvkm_object *object, u32 handle) 72{ 73 return nvkm_ramht_insert(chan->disp->ramht, object, 74 chan->chid.user, -10, handle, 75 chan->chid.user << 28 | 76 chan->chid.user); 77} 78 79static void 80nv50_disp_dmac_fini(struct nv50_disp_chan *chan) 81{ 82 struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev; 83 struct nvkm_device *device = subdev->device; 84 int ctrl = chan->chid.ctrl; 85 int user = chan->chid.user; 86 87 /* deactivate channel */ 88 nvkm_mask(device, 0x610200 + (ctrl * 0x0010), 0x00001010, 0x00001000); 89 nvkm_mask(device, 0x610200 + (ctrl * 0x0010), 0x00000003, 0x00000000); 90 if (nvkm_msec(device, 2000, 91 if (!(nvkm_rd32(device, 0x610200 + (ctrl * 0x10)) & 0x001e0000)) 92 break; 93 ) < 0) { 94 nvkm_error(subdev, "ch %d fini timeout, %08x\n", user, 95 nvkm_rd32(device, 0x610200 + (ctrl * 0x10))); 96 } 97 98 chan->suspend_put = nvkm_rd32(device, 0x640000 + (ctrl * 0x1000)); 99} 100 101static int 102nv50_disp_dmac_init(struct nv50_disp_chan *chan) 103{ 104 struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev; 105 struct nvkm_device *device = subdev->device; 106 int ctrl = chan->chid.ctrl; 107 int user = chan->chid.user; 108 109 /* initialise channel for dma command submission */ 110 nvkm_wr32(device, 0x610204 + (ctrl * 0x0010), chan->push); 111 nvkm_wr32(device, 0x610208 + (ctrl * 0x0010), 0x00010000); 112 nvkm_wr32(device, 0x61020c + (ctrl * 0x0010), ctrl); 113 nvkm_mask(device, 0x610200 + (ctrl * 0x0010), 0x00000010, 0x00000010); 114 nvkm_wr32(device, 0x640000 + (ctrl * 0x1000), chan->suspend_put); 115 nvkm_wr32(device, 0x610200 + (ctrl * 0x0010), 0x00000013); 116 117 /* wait for it to go inactive */ 118 if (nvkm_msec(device, 2000, 119 if (!(nvkm_rd32(device, 0x610200 + (ctrl * 0x10)) & 0x80000000)) 120 break; 121 ) < 0) { 122 nvkm_error(subdev, "ch %d init timeout, %08x\n", user, 123 nvkm_rd32(device, 0x610200 + (ctrl * 0x10))); 124 return -EBUSY; 125 } 126 127 return 0; 128} 129 130const struct nv50_disp_chan_func 131nv50_disp_dmac_func = { 132 .init = nv50_disp_dmac_init, 133 .fini = nv50_disp_dmac_fini, 134 .intr = nv50_disp_chan_intr, 135 .user = nv50_disp_chan_user, 136 .bind = nv50_disp_dmac_bind, 137};