| /* |
| * Copyright 2012 Red Hat Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: Ben Skeggs |
| */ |
| #include "channv50.h" |
| |
| #include <core/client.h> |
| #include <core/ramht.h> |
| #include <subdev/fb.h> |
| #include <subdev/mmu.h> |
| #include <subdev/timer.h> |
| #include <engine/dma.h> |
| |
| int |
| nv50_disp_dmac_new_(const struct nv50_disp_chan_func *func, |
| const struct nv50_disp_chan_mthd *mthd, |
| struct nv50_disp *disp, int chid, int head, u64 push, |
| const struct nvkm_oclass *oclass, |
| struct nvkm_object **pobject) |
| { |
| struct nvkm_client *client = oclass->client; |
| struct nv50_disp_chan *chan; |
| int ret; |
| |
| ret = nv50_disp_chan_new_(func, mthd, disp, chid, chid, head, oclass, |
| pobject); |
| chan = nv50_disp_chan(*pobject); |
| if (ret) |
| return ret; |
| |
| chan->memory = nvkm_umem_search(client, push); |
| if (IS_ERR(chan->memory)) |
| return PTR_ERR(chan->memory); |
| |
| if (nvkm_memory_size(chan->memory) < 0x1000) |
| return -EINVAL; |
| |
| switch (nvkm_memory_target(chan->memory)) { |
| case NVKM_MEM_TARGET_VRAM: chan->push = 0x00000001; break; |
| case NVKM_MEM_TARGET_NCOH: chan->push = 0x00000002; break; |
| case NVKM_MEM_TARGET_HOST: chan->push = 0x00000003; break; |
| default: |
| return -EINVAL; |
| } |
| |
| chan->push |= nvkm_memory_addr(chan->memory) >> 8; |
| return 0; |
| } |
| |
| int |
| nv50_disp_dmac_bind(struct nv50_disp_chan *chan, |
| struct nvkm_object *object, u32 handle) |
| { |
| return nvkm_ramht_insert(chan->disp->ramht, object, |
| chan->chid.user, -10, handle, |
| chan->chid.user << 28 | |
| chan->chid.user); |
| } |
| |
| static void |
| nv50_disp_dmac_fini(struct nv50_disp_chan *chan) |
| { |
| struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev; |
| struct nvkm_device *device = subdev->device; |
| int ctrl = chan->chid.ctrl; |
| int user = chan->chid.user; |
| |
| /* deactivate channel */ |
| nvkm_mask(device, 0x610200 + (ctrl * 0x0010), 0x00001010, 0x00001000); |
| nvkm_mask(device, 0x610200 + (ctrl * 0x0010), 0x00000003, 0x00000000); |
| if (nvkm_msec(device, 2000, |
| if (!(nvkm_rd32(device, 0x610200 + (ctrl * 0x10)) & 0x001e0000)) |
| break; |
| ) < 0) { |
| nvkm_error(subdev, "ch %d fini timeout, %08x\n", user, |
| nvkm_rd32(device, 0x610200 + (ctrl * 0x10))); |
| } |
| |
| chan->suspend_put = nvkm_rd32(device, 0x640000 + (ctrl * 0x1000)); |
| } |
| |
| static int |
| nv50_disp_dmac_init(struct nv50_disp_chan *chan) |
| { |
| struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev; |
| struct nvkm_device *device = subdev->device; |
| int ctrl = chan->chid.ctrl; |
| int user = chan->chid.user; |
| |
| /* initialise channel for dma command submission */ |
| nvkm_wr32(device, 0x610204 + (ctrl * 0x0010), chan->push); |
| nvkm_wr32(device, 0x610208 + (ctrl * 0x0010), 0x00010000); |
| nvkm_wr32(device, 0x61020c + (ctrl * 0x0010), ctrl); |
| nvkm_mask(device, 0x610200 + (ctrl * 0x0010), 0x00000010, 0x00000010); |
| nvkm_wr32(device, 0x640000 + (ctrl * 0x1000), chan->suspend_put); |
| nvkm_wr32(device, 0x610200 + (ctrl * 0x0010), 0x00000013); |
| |
| /* wait for it to go inactive */ |
| if (nvkm_msec(device, 2000, |
| if (!(nvkm_rd32(device, 0x610200 + (ctrl * 0x10)) & 0x80000000)) |
| break; |
| ) < 0) { |
| nvkm_error(subdev, "ch %d init timeout, %08x\n", user, |
| nvkm_rd32(device, 0x610200 + (ctrl * 0x10))); |
| return -EBUSY; |
| } |
| |
| return 0; |
| } |
| |
| const struct nv50_disp_chan_func |
| nv50_disp_dmac_func = { |
| .init = nv50_disp_dmac_init, |
| .fini = nv50_disp_dmac_fini, |
| .intr = nv50_disp_chan_intr, |
| .user = nv50_disp_chan_user, |
| .bind = nv50_disp_dmac_bind, |
| }; |