curs507a.c

  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		nv50_atom(asyh->state.state)->lock_core = true;
 88	}
 89}
 90
 91static void
 92curs507a_release(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
 93		 struct nv50_head_atom *asyh)
 94{
 95	asyh->curs.visible = false;
 96}
 97
 98static int
 99curs507a_acquire(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
100		 struct nv50_head_atom *asyh)
101{
102	struct nouveau_drm *drm = nouveau_drm(wndw->plane.dev);
103	struct nv50_head *head = nv50_head(asyw->state.crtc);
104	struct drm_framebuffer *fb = asyw->state.fb;
105	int ret;
106
107	ret = drm_atomic_helper_check_plane_state(&asyw->state, &asyh->state,
108						  DRM_PLANE_NO_SCALING,
109						  DRM_PLANE_NO_SCALING,
110						  true, true);
111	asyh->curs.visible = asyw->state.visible;
112	if (ret || !asyh->curs.visible)
113		return ret;
114
115	if (asyw->state.crtc_w != asyw->state.crtc_h) {
116		NV_ATOMIC(drm, "Plane width/height must be equal for cursors\n");
117		return -EINVAL;
118	}
119
120	if (asyw->image.w != asyw->state.crtc_w) {
121		NV_ATOMIC(drm, "Plane width must be equal to fb width for cursors (height can be larger though)\n");
122		return -EINVAL;
123	}
124
125	if (asyw->state.src_x || asyw->state.src_y) {
126		NV_ATOMIC(drm, "Cursor planes do not support framebuffer offsets\n");
127		return -EINVAL;
128	}
129
130	if (asyw->image.pitch[0] != asyw->image.w * fb->format->cpp[0]) {
131		NV_ATOMIC(drm,
132			  "%s: invalid cursor image pitch: image must be packed (pitch = %d, width = %d)\n",
133			  wndw->plane.name, asyw->image.pitch[0], asyw->image.w);
134		return -EINVAL;
135	}
136
137	ret = head->func->curs_layout(head, asyw, asyh);
138	if (ret) {
139		NV_ATOMIC(drm,
140			  "%s: invalid cursor image size: unsupported size %dx%d\n",
141			  wndw->plane.name, asyw->image.w, asyw->image.h);
142		return ret;
143	}
144
145	ret = head->func->curs_format(head, asyw, asyh);
146	if (ret) {
147		NV_ATOMIC(drm,
148			  "%s: invalid cursor image format 0x%X\n",
149			  wndw->plane.name, fb->format->format);
150		return ret;
151	}
152
153	return 0;
154}
155
156static const u32
157curs507a_format[] = {
158	DRM_FORMAT_ARGB8888,
159	0
160};
161
162static const struct nv50_wndw_func
163curs507a_wndw = {
164	.acquire = curs507a_acquire,
165	.release = curs507a_release,
166	.prepare = curs507a_prepare,
167};
168
169int
170curs507a_new_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
171	      int head, s32 oclass, u32 interlock_data,
172	      struct nv50_wndw **pwndw)
173{
174	struct nvif_disp_chan_v0 args = {
175		.id = head,
176	};
177	struct nv50_disp *disp = nv50_disp(drm->dev);
178	struct nv50_wndw *wndw;
179	int ret;
180
181	ret = nv50_wndw_new_(&curs507a_wndw, drm->dev, DRM_PLANE_TYPE_CURSOR,
182			     "curs", head, curs507a_format, BIT(head),
183			     NV50_DISP_INTERLOCK_CURS, interlock_data, &wndw);
184	if (*pwndw = wndw, ret)
185		return ret;
186
187	ret = nvif_object_ctor(&disp->disp->object, "kmsCurs", 0, oclass,
188			       &args, sizeof(args), &wndw->wimm.base.user);
189	if (ret) {
190		NV_ERROR(drm, "curs%04x allocation failed: %d\n", oclass, ret);
191		return ret;
192	}
193
194	nvif_object_map(&wndw->wimm.base.user, NULL, 0);
195	wndw->immd = func;
196	wndw->ctxdma.parent = NULL;
197	return 0;
198}
199
200int
201curs507a_new(struct nouveau_drm *drm, int head, s32 oclass,
202	     struct nv50_wndw **pwndw)
203{
204	return curs507a_new_(&curs507a, drm, head, oclass,
205			     0x00000001 << (head * 8), pwndw);
206}