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/if0014.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_fourcc.h>
33
34bool
35curs507a_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
46static int
47curs507a_update(struct nv50_wndw *wndw, u32 *interlock)
48{
49 struct nvif_object *user = &wndw->wimm.base.user;
50 int ret = nvif_chan_wait(dmac: &wndw->wimm, size: 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
58static int
59curs507a_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(dmac: &wndw->wimm, size: 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
71const struct nv50_wimm_func
72curs507a = {
73 .point = curs507a_point,
74 .update = curs507a_update,
75};
76
77static void
78curs507a_prepare(struct nv50_wndw *wndw, struct nv50_head_atom *asyh,
79 struct nv50_wndw_atom *asyw)
80{
81 u32 handle = nv50_disp(dev: 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
90static void
91curs507a_release(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
92 struct nv50_head_atom *asyh)
93{
94 asyh->curs.visible = false;
95}
96
97static int
98curs507a_acquire(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
99 struct nv50_head_atom *asyh)
100{
101 struct nouveau_drm *drm = nouveau_drm(wndw->plane.dev);
102 struct nv50_head *head = nv50_head(asyw->state.crtc);
103 struct drm_framebuffer *fb = asyw->state.fb;
104 int ret;
105
106 ret = drm_atomic_helper_check_plane_state(plane_state: &asyw->state, crtc_state: &asyh->state,
107 DRM_PLANE_NO_SCALING,
108 DRM_PLANE_NO_SCALING,
109 can_position: true, can_update_disabled: true);
110 asyh->curs.visible = asyw->state.visible;
111 if (ret || !asyh->curs.visible)
112 return ret;
113
114 if (asyw->state.crtc_w != asyw->state.crtc_h) {
115 NV_ATOMIC(drm, "Plane width/height must be equal for cursors\n");
116 return -EINVAL;
117 }
118
119 if (asyw->image.w != asyw->state.crtc_w) {
120 NV_ATOMIC(drm, "Plane width must be equal to fb width for cursors (height can be larger though)\n");
121 return -EINVAL;
122 }
123
124 if (asyw->state.src_x || asyw->state.src_y) {
125 NV_ATOMIC(drm, "Cursor planes do not support framebuffer offsets\n");
126 return -EINVAL;
127 }
128
129 if (asyw->image.pitch[0] != asyw->image.w * fb->format->cpp[0]) {
130 NV_ATOMIC(drm,
131 "%s: invalid cursor image pitch: image must be packed (pitch = %d, width = %d)\n",
132 wndw->plane.name, asyw->image.pitch[0], asyw->image.w);
133 return -EINVAL;
134 }
135
136 ret = head->func->curs_layout(head, asyw, asyh);
137 if (ret) {
138 NV_ATOMIC(drm,
139 "%s: invalid cursor image size: unsupported size %dx%d\n",
140 wndw->plane.name, asyw->image.w, asyw->image.h);
141 return ret;
142 }
143
144 ret = head->func->curs_format(head, asyw, asyh);
145 if (ret) {
146 NV_ATOMIC(drm,
147 "%s: invalid cursor image format 0x%X\n",
148 wndw->plane.name, fb->format->format);
149 return ret;
150 }
151
152 return 0;
153}
154
155static const u32
156curs507a_format[] = {
157 DRM_FORMAT_ARGB8888,
158 0
159};
160
161static const struct nv50_wndw_func
162curs507a_wndw = {
163 .acquire = curs507a_acquire,
164 .release = curs507a_release,
165 .prepare = curs507a_prepare,
166};
167
168int
169curs507a_new_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
170 int head, s32 oclass, u32 interlock_data,
171 struct nv50_wndw **pwndw)
172{
173 struct nvif_disp_chan_v0 args = {
174 .id = head,
175 };
176 struct nv50_disp *disp = nv50_disp(dev: drm->dev);
177 struct nv50_wndw *wndw;
178 int ret;
179
180 ret = nv50_wndw_new_(&curs507a_wndw, drm->dev, DRM_PLANE_TYPE_CURSOR,
181 name: "curs", index: head, format: curs507a_format, BIT(head),
182 NV50_DISP_INTERLOCK_CURS, interlock_data, &wndw);
183 if (*pwndw = wndw, ret)
184 return ret;
185
186 ret = nvif_object_ctor(&disp->disp->object, "kmsCurs", 0, oclass,
187 &args, sizeof(args), &wndw->wimm.base.user);
188 if (ret) {
189 NV_ERROR(drm, "curs%04x allocation failed: %d\n", oclass, ret);
190 return ret;
191 }
192
193 nvif_object_map(&wndw->wimm.base.user, NULL, 0);
194 wndw->immd = func;
195 wndw->ctxdma.parent = NULL;
196 return 0;
197}
198
199int
200curs507a_new(struct nouveau_drm *drm, int head, s32 oclass,
201 struct nv50_wndw **pwndw)
202{
203 return curs507a_new_(&curs507a, drm, head, oclass,
204 interlock_data: 0x00000001 << (head * 8), pwndw);
205}
206

source code of linux/drivers/gpu/drm/nouveau/dispnv50/curs507a.c