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(&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
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(&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
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(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(&asyw->state, &asyh->state,
107						  DRM_PLANE_NO_SCALING,
108						  DRM_PLANE_NO_SCALING,
109						  true, 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(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			     "curs", head, 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			     0x00000001 << (head * 8), pwndw);
205}
206