1 /* $NetBSD: nouveau_nvkm_engine_disp_dmacgf119.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_disp_dmacgf119.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $");
28
29 #include "channv50.h"
30
31 #include <core/ramht.h>
32 #include <subdev/timer.h>
33
34 int
gf119_disp_dmac_bind(struct nv50_disp_chan * chan,struct nvkm_object * object,u32 handle)35 gf119_disp_dmac_bind(struct nv50_disp_chan *chan,
36 struct nvkm_object *object, u32 handle)
37 {
38 return nvkm_ramht_insert(chan->disp->ramht, object,
39 chan->chid.user, -9, handle,
40 chan->chid.user << 27 | 0x00000001);
41 }
42
43 void
gf119_disp_dmac_fini(struct nv50_disp_chan * chan)44 gf119_disp_dmac_fini(struct nv50_disp_chan *chan)
45 {
46 struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
47 struct nvkm_device *device = subdev->device;
48 int ctrl = chan->chid.ctrl;
49 int user = chan->chid.user;
50
51 /* deactivate channel */
52 nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00001010, 0x00001000);
53 nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00000003, 0x00000000);
54 if (nvkm_msec(device, 2000,
55 if (!(nvkm_rd32(device, 0x610490 + (ctrl * 0x10)) & 0x001e0000))
56 break;
57 ) < 0) {
58 nvkm_error(subdev, "ch %d fini: %08x\n", user,
59 nvkm_rd32(device, 0x610490 + (ctrl * 0x10)));
60 }
61 }
62
63 static int
gf119_disp_dmac_init(struct nv50_disp_chan * chan)64 gf119_disp_dmac_init(struct nv50_disp_chan *chan)
65 {
66 struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
67 struct nvkm_device *device = subdev->device;
68 int ctrl = chan->chid.ctrl;
69 int user = chan->chid.user;
70
71 /* initialise channel for dma command submission */
72 nvkm_wr32(device, 0x610494 + (ctrl * 0x0010), chan->push);
73 nvkm_wr32(device, 0x610498 + (ctrl * 0x0010), 0x00010000);
74 nvkm_wr32(device, 0x61049c + (ctrl * 0x0010), 0x00000001);
75 nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00000010, 0x00000010);
76 nvkm_wr32(device, 0x640000 + (ctrl * 0x1000), 0x00000000);
77 nvkm_wr32(device, 0x610490 + (ctrl * 0x0010), 0x00000013);
78
79 /* wait for it to go inactive */
80 if (nvkm_msec(device, 2000,
81 if (!(nvkm_rd32(device, 0x610490 + (ctrl * 0x10)) & 0x80000000))
82 break;
83 ) < 0) {
84 nvkm_error(subdev, "ch %d init: %08x\n", user,
85 nvkm_rd32(device, 0x610490 + (ctrl * 0x10)));
86 return -EBUSY;
87 }
88
89 return 0;
90 }
91
92 const struct nv50_disp_chan_func
93 gf119_disp_dmac_func = {
94 .init = gf119_disp_dmac_init,
95 .fini = gf119_disp_dmac_fini,
96 .intr = gf119_disp_chan_intr,
97 .user = nv50_disp_chan_user,
98 .bind = gf119_disp_dmac_bind,
99 };
100