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 "curs.h"
23 #include "core.h"
24 #include "head.h"
25 
26 #include <nvif/cl507a.h>
27 #include <nvif/timer.h>
28 
29 #include <nvhw/class/cl507a.h>
30 
31 #include <drm/drm_atomic_helper.h>
32 #include <drm/drm_plane_helper.h>
33 
34 bool
curs507a_space(struct nv50_wndw * wndw)35 curs507a_space(struct nv50_wndw *wndw)
36 {
37 	nvif_msec(&nouveau_drm(wndw->plane.dev)->client.device, 100,
38 		if (NVIF_TV32(&wndw->wimm.base.user, NV507A, FREE, COUNT, >=, 4))
39 			return true;
40 	);
41 
42 	WARN_ON(1);
43 	return false;
44 }
45 
46 static int
curs507a_update(struct nv50_wndw * wndw,u32 * interlock)47 curs507a_update(struct nv50_wndw *wndw, u32 *interlock)
48 {
49 	struct nvif_object *user = &wndw->wimm.base.user;
50 	int ret = nvif_chan_wait(&wndw->wimm, 1);
51 	if (ret == 0) {
52 		NVIF_WR32(user, NV507A, UPDATE,
53 			  NVDEF(NV507A, UPDATE, INTERLOCK_WITH_CORE, DISABLE));
54 	}
55 	return ret;
56 }
57 
58 static int
curs507a_point(struct nv50_wndw * wndw,struct nv50_wndw_atom * asyw)59 curs507a_point(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
60 {
61 	struct nvif_object *user = &wndw->wimm.base.user;
62 	int ret = nvif_chan_wait(&wndw->wimm, 1);
63 	if (ret == 0) {
64 		NVIF_WR32(user, NV507A, SET_CURSOR_HOT_SPOT_POINT_OUT,
65 			  NVVAL(NV507A, SET_CURSOR_HOT_SPOT_POINT_OUT, X, asyw->point.x) |
66 			  NVVAL(NV507A, SET_CURSOR_HOT_SPOT_POINT_OUT, Y, asyw->point.y));
67 	}
68 	return ret;
69 }
70 
71 const struct nv50_wimm_func
72 curs507a = {
73 	.point = curs507a_point,
74 	.update = curs507a_update,
75 };
76 
77 static void
curs507a_prepare(struct nv50_wndw * wndw,struct nv50_head_atom * asyh,struct nv50_wndw_atom * asyw)78 curs507a_prepare(struct nv50_wndw *wndw, struct nv50_head_atom *asyh,
79 		 struct nv50_wndw_atom *asyw)
80 {
81 	u32 handle = nv50_disp(wndw->plane.dev)->core->chan.vram.handle;
82 	u32 offset = asyw->image.offset[0];
83 	if (asyh->curs.handle != handle || asyh->curs.offset != offset) {
84 		asyh->curs.handle = handle;
85 		asyh->curs.offset = offset;
86 		asyh->set.curs = asyh->curs.visible;
87 	}
88 }
89 
90 static void
curs507a_release(struct nv50_wndw * wndw,struct nv50_wndw_atom * asyw,struct nv50_head_atom * asyh)91 curs507a_release(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
92 		 struct nv50_head_atom *asyh)
93 {
94 	asyh->curs.visible = false;
95 }
96 
97 static int
curs507a_acquire(struct nv50_wndw * wndw,struct nv50_wndw_atom * asyw,struct nv50_head_atom * asyh)98 curs507a_acquire(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
99 		 struct nv50_head_atom *asyh)
100 {
101 	struct nv50_head *head = nv50_head(asyw->state.crtc);
102 	int ret;
103 
104 	ret = drm_atomic_helper_check_plane_state(&asyw->state, &asyh->state,
105 						  DRM_PLANE_HELPER_NO_SCALING,
106 						  DRM_PLANE_HELPER_NO_SCALING,
107 						  true, true);
108 	asyh->curs.visible = asyw->state.visible;
109 	if (ret || !asyh->curs.visible)
110 		return ret;
111 
112 	if (asyw->image.w != asyw->image.h)
113 		return -EINVAL;
114 
115 	ret = head->func->curs_layout(head, asyw, asyh);
116 	if (ret)
117 		return ret;
118 
119 	return head->func->curs_format(head, asyw, asyh);
120 }
121 
122 static const u32
123 curs507a_format[] = {
124 	DRM_FORMAT_ARGB8888,
125 	0
126 };
127 
128 static const struct nv50_wndw_func
129 curs507a_wndw = {
130 	.acquire = curs507a_acquire,
131 	.release = curs507a_release,
132 	.prepare = curs507a_prepare,
133 };
134 
135 int
curs507a_new_(const struct nv50_wimm_func * func,struct nouveau_drm * drm,int head,s32 oclass,u32 interlock_data,struct nv50_wndw ** pwndw)136 curs507a_new_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
137 	      int head, s32 oclass, u32 interlock_data,
138 	      struct nv50_wndw **pwndw)
139 {
140 	struct nv50_disp_cursor_v0 args = {
141 		.head = head,
142 	};
143 	struct nv50_disp *disp = nv50_disp(drm->dev);
144 	struct nv50_wndw *wndw;
145 	int ret;
146 
147 	ret = nv50_wndw_new_(&curs507a_wndw, drm->dev, DRM_PLANE_TYPE_CURSOR,
148 			     "curs", head, curs507a_format, BIT(head),
149 			     NV50_DISP_INTERLOCK_CURS, interlock_data, &wndw);
150 	if (*pwndw = wndw, ret)
151 		return ret;
152 
153 	ret = nvif_object_ctor(&disp->disp->object, "kmsCurs", 0, oclass,
154 			       &args, sizeof(args), &wndw->wimm.base.user);
155 	if (ret) {
156 		NV_ERROR(drm, "curs%04x allocation failed: %d\n", oclass, ret);
157 		return ret;
158 	}
159 
160 	nvif_object_map(&wndw->wimm.base.user, NULL, 0);
161 	wndw->immd = func;
162 	wndw->ctxdma.parent = NULL;
163 	return 0;
164 }
165 
166 int
curs507a_new(struct nouveau_drm * drm,int head,s32 oclass,struct nv50_wndw ** pwndw)167 curs507a_new(struct nouveau_drm *drm, int head, s32 oclass,
168 	     struct nv50_wndw **pwndw)
169 {
170 	return curs507a_new_(&curs507a, drm, head, oclass,
171 			     0x00000001 << (head * 8), pwndw);
172 }
173