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      1 /*	$NetBSD: nouveau_dispnv50_curs507a.c,v 1.2 2021/12/18 23:45:32 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2018 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_dispnv50_curs507a.c,v 1.2 2021/12/18 23:45:32 riastradh Exp $");
     26 
     27 #include "curs.h"
     28 #include "core.h"
     29 #include "head.h"
     30 
     31 #include <nvif/cl507a.h>
     32 
     33 #include <drm/drm_atomic_helper.h>
     34 #include <drm/drm_plane_helper.h>
     35 
     36 static void
     37 curs507a_update(struct nv50_wndw *wndw, u32 *interlock)
     38 {
     39 	nvif_wr32(&wndw->wimm.base.user, 0x0080, 0x00000000);
     40 }
     41 
     42 static void
     43 curs507a_point(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
     44 {
     45 	nvif_wr32(&wndw->wimm.base.user, 0x0084, asyw->point.y << 16 |
     46 						 asyw->point.x);
     47 }
     48 
     49 const struct nv50_wimm_func
     50 curs507a = {
     51 	.point = curs507a_point,
     52 	.update = curs507a_update,
     53 };
     54 
     55 static void
     56 curs507a_prepare(struct nv50_wndw *wndw, struct nv50_head_atom *asyh,
     57 		 struct nv50_wndw_atom *asyw)
     58 {
     59 	u32 handle = nv50_disp(wndw->plane.dev)->core->chan.vram.handle;
     60 	u32 offset = asyw->image.offset[0];
     61 	if (asyh->curs.handle != handle || asyh->curs.offset != offset) {
     62 		asyh->curs.handle = handle;
     63 		asyh->curs.offset = offset;
     64 		asyh->set.curs = asyh->curs.visible;
     65 	}
     66 }
     67 
     68 static void
     69 curs507a_release(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
     70 		 struct nv50_head_atom *asyh)
     71 {
     72 	asyh->curs.visible = false;
     73 }
     74 
     75 static int
     76 curs507a_acquire(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw,
     77 		 struct nv50_head_atom *asyh)
     78 {
     79 	struct nv50_head *head = nv50_head(asyw->state.crtc);
     80 	int ret;
     81 
     82 	ret = drm_atomic_helper_check_plane_state(&asyw->state, &asyh->state,
     83 						  DRM_PLANE_HELPER_NO_SCALING,
     84 						  DRM_PLANE_HELPER_NO_SCALING,
     85 						  true, true);
     86 	asyh->curs.visible = asyw->state.visible;
     87 	if (ret || !asyh->curs.visible)
     88 		return ret;
     89 
     90 	if (asyw->image.w != asyw->image.h)
     91 		return -EINVAL;
     92 
     93 	ret = head->func->curs_layout(head, asyw, asyh);
     94 	if (ret)
     95 		return ret;
     96 
     97 	return head->func->curs_format(head, asyw, asyh);
     98 }
     99 
    100 static const u32
    101 curs507a_format[] = {
    102 	DRM_FORMAT_ARGB8888,
    103 	0
    104 };
    105 
    106 static const struct nv50_wndw_func
    107 curs507a_wndw = {
    108 	.acquire = curs507a_acquire,
    109 	.release = curs507a_release,
    110 	.prepare = curs507a_prepare,
    111 };
    112 
    113 int
    114 curs507a_new_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
    115 	      int head, s32 oclass, u32 interlock_data,
    116 	      struct nv50_wndw **pwndw)
    117 {
    118 	struct nv50_disp_cursor_v0 args = {
    119 		.head = head,
    120 	};
    121 	struct nv50_disp *disp = nv50_disp(drm->dev);
    122 	struct nv50_wndw *wndw;
    123 	int ret;
    124 
    125 	ret = nv50_wndw_new_(&curs507a_wndw, drm->dev, DRM_PLANE_TYPE_CURSOR,
    126 			     "curs", head, curs507a_format, BIT(head),
    127 			     NV50_DISP_INTERLOCK_CURS, interlock_data, &wndw);
    128 	if (*pwndw = wndw, ret)
    129 		return ret;
    130 
    131 	ret = nvif_object_init(&disp->disp->object, 0, oclass, &args,
    132 			       sizeof(args), &wndw->wimm.base.user);
    133 	if (ret) {
    134 		NV_ERROR(drm, "curs%04x allocation failed: %d\n", oclass, ret);
    135 		return ret;
    136 	}
    137 
    138 	nvif_object_map(&wndw->wimm.base.user, NULL, 0);
    139 	wndw->immd = func;
    140 	wndw->ctxdma.parent = NULL;
    141 	return 0;
    142 }
    143 
    144 int
    145 curs507a_new(struct nouveau_drm *drm, int head, s32 oclass,
    146 	     struct nv50_wndw **pwndw)
    147 {
    148 	return curs507a_new_(&curs507a, drm, head, oclass,
    149 			     0x00000001 << (head * 8), pwndw);
    150 }
    151