1 /*
2  * Copyright 2018 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 #include "wimm.h"
23 #include "atom.h"
24 #include "wndw.h"
25 
26 #include <nvif/clc37b.h>
27 
28 static void
29 wimmc37b_update(struct nv50_wndw *wndw, u32 *interlock)
30 {
31 	u32 *push;
32 	if ((push = evo_wait(&wndw->wimm, 2))) {
33 		evo_mthd(push, 0x0200, 1);
34 		if (interlock[NV50_DISP_INTERLOCK_WNDW] & wndw->interlock.data)
35 			evo_data(push, 0x00000003);
36 		else
37 			evo_data(push, 0x00000001);
38 		evo_kick(push, &wndw->wimm);
39 	}
40 }
41 
42 static void
43 wimmc37b_point(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
44 {
45 	u32 *push;
46 	if ((push = evo_wait(&wndw->wimm, 2))) {
47 		evo_mthd(push, 0x0208, 1);
48 		evo_data(push, asyw->point.y << 16 | asyw->point.x);
49 		evo_kick(push, &wndw->wimm);
50 	}
51 }
52 
53 static const struct nv50_wimm_func
54 wimmc37b = {
55 	.point = wimmc37b_point,
56 	.update = wimmc37b_update,
57 };
58 
59 static int
60 wimmc37b_init_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
61 	       s32 oclass, struct nv50_wndw *wndw)
62 {
63 	struct nvc37b_window_imm_channel_dma_v0 args = {
64 		.pushbuf = 0xb0007b00 | wndw->id,
65 		.index = wndw->id,
66 	};
67 	struct nv50_disp *disp = nv50_disp(drm->dev);
68 	int ret;
69 
70 	ret = nv50_dmac_create(&drm->client.device, &disp->disp->object,
71 			       &oclass, 0, &args, sizeof(args), 0,
72 			       &wndw->wimm);
73 	if (ret) {
74 		NV_ERROR(drm, "wimm%04x allocation failed: %d\n", oclass, ret);
75 		return ret;
76 	}
77 
78 	wndw->interlock.wimm = wndw->interlock.data;
79 	wndw->immd = func;
80 	return 0;
81 }
82 
83 int
84 wimmc37b_init(struct nouveau_drm *drm, s32 oclass, struct nv50_wndw *wndw)
85 {
86 	return wimmc37b_init_(&wimmc37b, drm, oclass, wndw);
87 }
88